Fireproof pressure-resistant floor drain without sealing liquid

Abstract

This utility model provides a fireproof and pressure-resistant floor drain without sealing liquid, comprising a main sleeve and a fireproof drain core. The fireproof drain core includes an upper drain core and a lower drain core, which are distributed vertically within the main sleeve and are both sealed to the main sleeve. The fireproof drain core includes a fixed bracket, an umbrella-shaped sealing structure, and a magnetic base. The top side wall of the fixed bracket is sealed to the main sleeve. The umbrella-shaped sealing structure includes an umbrella surface and a support rod. The umbrella surface is fixedly connected to the first end of the support rod. The magnetic base is located at the bottom of the fixed bracket and has a hollow channel. The second end of the support rod has a first magnet that is slidably connected to the first end of the hollow channel. The second end of the hollow channel has a second magnet. The first magnet and the second magnet have the same magnetism. The umbrella surface is tightly fitted to the top opening of the fixed bracket. This utility model has the advantages of effective drainage, pressure resistance, fire resistance, good sealing performance, and easy maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to floor drain technical field, especially in a kind of fire-resistant pressure floor drain without sealing liquid. BACKGROUND

[0002] Nuclear power fire prevention floor drain is a water seal floor drain located at the boundary of fire barrier, according to the nuclear power plant fire zone isolation requirements, in the case of complete floor drain water seal, it needs to have fire resistance and prevent smoke spread function, the water seal floor drain of existing design realizes water seal function by adding water / sealing liquid, to ensure the integrity of fire zone. But in response to complex and changeable working conditions, water seal floor drain is easily affected by human and environmental factors and fails, the specific problem analysis is as follows:

[0003] (1) affected by room wind pressure, causing sealing liquid to evaporate fast, leading to sealing failure due to insufficient sealing liquid level, damaging the integrity of plant fire barrier;

[0004] (2) in order to solve the above problem (1), water seal floor drain needs to arrange special person to maintain frequently, maintain water seal height by supplementing water / sealing liquid, leading to complex operation and maintenance, time-consuming and laborious.

[0005] In view of the above problems, the fireproof floor drain core with authorization announcement number CN222575704U realizes smoke-proof floor drain without sealing liquid by multiple floating ball modules, and the upper and lower floating ball closures can avoid the convection heat exchange between sealing liquid and room air, thereby slowing down the evaporation of sealing liquid. But in the room with large negative pressure, heavier floating ball modules are needed to avoid the floating ball being sucked up by negative pressure without water flow and losing the effect of plugging isolation. Under the condition of larger floating ball weight, it may hinder the drainage function of floor drain.

[0006] In summary, there is a lack of floor drain that can effectively drain, resist pressure, prevent fire, have good sealing property and be easy to maintain. UTILITY MODEL CONTENTS

[0007] In order to solve the above problems of prior art, the utility model provides a fire-resistant pressure floor drain without sealing liquid, which realizes effective drainage and has the advantages of pressure resistance, fire prevention, good sealing property and easy maintenance.

[0008] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0009] In the first aspect, the utility model provides a fire-resistant pressure floor drain without sealing liquid, which includes a main body sleeve and a fireproof floor drain core, the fireproof floor drain core includes an upper floor drain core and a lower floor drain core, the upper floor drain core and the lower floor drain core are distributed up and down in the main body sleeve and are sealed connected with the main body sleeve;

[0010] The fireproof floor drain core comprises a fixed support, an umbrella-shaped sealing structure and a magnetic base, the top side wall of the fixed support is sealingly connected with the main body sleeve, the umbrella-shaped sealing structure comprises an umbrella surface and a supporting rod, the umbrella surface is fixedly connected with the first end of the supporting rod, the magnetic base is arranged at the bottom of the fixed support, the magnetic base is provided with a hollow channel, the second end of the supporting rod is provided with a first magnet and is slidingly connected with the first end of the hollow channel, the second end of the hollow channel is provided with a second magnet, the first magnet and the second magnet have the same magnetism, and the umbrella surface is tightly attached to the top opening of the fixed support.

[0011] The fireproof floor drain core comprises a fixed support, an umbrella-shaped sealing structure and a magnetic base, the top side wall of the fixed support is sealingly connected with the main body sleeve, the umbrella-shaped sealing structure comprises an umbrella surface and a supporting rod, the umbrella surface is fixedly connected with the first end of the supporting rod, the magnetic base is arranged at the bottom of the fixed support, the magnetic base is provided with a hollow channel, the second end of the supporting rod is provided with a first magnet and is slidingly connected with the first end of the hollow channel, the second end of the hollow channel is provided with a second magnet, the first magnet and the second magnet have the same magnetism, and the umbrella surface is tightly attached to the top opening of the fixed support.

[0012] Optionally, the first sealing ring and the second sealing ring are fluorine rubber sealing rings.

[0013] Optionally, the first sealing ring and the second sealing ring are fluorine rubber sealing rings.

[0014] Optionally, the first magnet comprises first and second magnetic cores arranged in an up-down manner and having opposite magnetism, the second magnet comprises third and fourth magnetic cores arranged in an up-down manner and having opposite magnetism, and the second magnetic core and the third magnetic core have the same magnetism.

[0015] Optionally, the top side wall of the fixed support is threadedly connected with the main body sleeve.

[0016] Optionally, the top of the fixed support is provided with a lifting handle.

[0017] Optionally, the bottom of the magnetic base is provided with a dismounting hole.

[0018] Optionally, the fixed support is a circular table, the side of the fixed support is uniformly provided with a plurality of arc-shaped ribs with the center inside, the cross-sectional dimension formed by the plurality of arc-shaped ribs decreases from top to bottom, and the outer contour dimension of the umbrella surface is between the minimum cross-sectional dimension and the maximum cross-sectional dimension formed by the plurality of arc-shaped ribs.

[0019] Optionally, the main sleeve and the fireproof floor drain core except the first magnet and the second magnet are made of 316 stainless steel. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole schematic view of a fireproof pressure-resistant floor drain without sealing liquid of the embodiment of the present application.

[0021] Figure 2 It is a partial schematic view of a fireproof pressure-resistant floor drain without sealing liquid of the embodiment of the present application.

[0022] Figure 3 It is a sectional view of a fireproof pressure-resistant floor drain without sealing liquid of the embodiment of the present application.

[0023] Figure 4 It is a whole schematic view of a fireproof floor drain core in a drainage state of the embodiment of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, main sleeve;

[0026] 2, upper floor drain core;

[0027] 21, fixed support; 211, opening; 212, arc-shaped rib; 213, second sealing ring;

[0028] 22, umbrella-shaped sealing structure; 221, umbrella surface; 222, support rod; 223, first magnet;

[0029] 23, magnetic base; 231, hollow channel; 232, second magnet; 233, dismounting hole;

[0030] 3, lower floor drain core;

[0031] 4, first sealing ring. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a clearer, more thorough understanding of the present application and to convey the complete scope of the present application to those skilled in the art.

[0033] Embodiment one

[0034] Please refer to Figures 1 to 4A fireproof and pressure-resistant floor drain without sealing liquid includes a main sleeve 1, a fireproof floor drain core, a first sealing ring 4 and a second sealing ring 213. The fireproof floor drain core includes an upper floor drain core 2 and a lower floor drain core 3, which are distributed vertically within the main sleeve 1 and are both sealed to the main sleeve 1.

[0035] Reference Figure 2 and Figure 3 As can be seen, in this embodiment, the upper drain core 2 and the lower drain core 3 have the same structure. Therefore, this application only discusses the fireproof drain core, and it should be considered that the structure of the fireproof drain core is the same as the structure of the upper drain core 2 and the lower drain core 3. Specifically, referring to... Figure 3 and 4 It can be seen that the fireproof floor drain core includes a fixed bracket 21, an umbrella-shaped sealing structure 22, and a magnetic base 23. The top side wall of the fixed bracket 21 is sealed to the main sleeve 1. The first sealing ring 4 is set at the connection between the fixed bracket 21 and the main sleeve 1. The umbrella-shaped sealing structure 22 includes an umbrella surface 221 and a support rod 222. The umbrella surface 221 is fixedly connected to the first end of the support rod 222. The magnetic base 23 is set at the bottom of the fixed bracket 21. The magnetic base 23 is provided with a hollow channel 231. The second end of the support rod 222 is provided with a first sealing ring 4. A magnet 223 is slidably connected to the first end of the hollow channel 231, and a second magnet 232 is provided at the second end of the hollow channel 231. The first magnet 223 and the second magnet 232 have the same magnetism. The umbrella surface 221 is tightly fitted with the top opening 211 of the fixed bracket 21. The second sealing ring 213 is provided on the contact surface between the top opening 211 of the fixed bracket 21 and the umbrella surface 221. Thus, based on the principle of like poles repulsion, the umbrella surface 221 is suspended upward and tightly attached to the upper second sealing ring 213, thereby achieving a better sealing effect.

[0036] In this embodiment, the first magnet 223 includes a first magnetic core and a second magnetic core arranged vertically and having opposite magnetic properties, and the second magnet 232 includes a third magnetic core and a fourth magnetic core arranged vertically and having opposite magnetic properties. The second magnetic core and the third magnetic core have the same magnetic properties. For example, the magnetic properties of the first magnetic core, the second magnetic core, the third magnetic core and the fourth magnetic core are S, N, N and S, respectively.

[0037] In this embodiment, the fixed bracket 21 is a frustum-like structure with a hollow bottom. Multiple arc-shaped ribs 212 with their centers on the inside are evenly distributed on the side of the fixed bracket 21. The cross-sectional dimensions formed by the multiple arc-shaped ribs 212 decrease sequentially from top to bottom. The outer contour dimension of the umbrella surface 221 is located between the minimum and maximum cross-sectional dimensions formed by the multiple arc-shaped ribs 212, thereby limiting the descent height of the umbrella surface 221 while ensuring the drainage effect.

[0038] In this embodiment, a handle is provided on the top of the fixed bracket 21, and a disassembly hole 233, specifically a hexagonal screw hole, is provided on the bottom of the magnetic base 23. In this embodiment, the top side wall of the fixed bracket 21 is threadedly connected to the main sleeve 1, and the bottom of the fixed bracket 21 is threadedly connected to the side wall of the magnetic base 23. Thus, through the cooperation of the handle and the disassembly hole 233, it is convenient to disassemble and assemble the fireproof drain core with the main sleeve 1 and the magnetic base 23 with the fixed bracket 21. The overall installation is simple and easy for later maintenance, replacement, and cleaning of blockages.

[0039] In this embodiment, the main sleeve 1 and the fireproof drain core (excluding the first magnet 223 and the second magnet 232) are all made of 316 stainless steel, with a service life of over 20 years. The first sealing ring 4 and the second sealing ring 213 are fluororubber sealing rings. Fluororubber can be used for a long time at 250°C and for a short time below 300°C. Fluororubber itself has excellent flame retardancy, ensuring a long-lasting and effective seal. The above structure ensures that the fireproof drain core has a service life of over 5 years.

[0040] Therefore, the working principle of this embodiment is as follows:

[0041] The main sleeve 1 of this embodiment is placed in the existing drainage pipe of the nuclear power plant. During installation, it is only necessary to open the fireproof floor drain cover, directly snap this embodiment onto the drainage pipe, and then cover the fireproof floor drain cover.

[0042] When water flows into the floor drain, the weight of the water opens the umbrella-shaped sealing structure 22 of the upper floor drain core 2, pushing the umbrella-shaped sealing structure 22 downward to release the seal. This allows the water to flow downward through the core to the lower floor drain core 3. When the water falls to the lower floor drain core 3, the umbrella-shaped sealing structure 22 of the lower floor drain core 3 moves downward to release the seal, thus achieving the drainage function.

[0043] When the drainage ends, the second magnet 232 in the upper drain core 2 and the lower drain core 3 pushes the umbrella-shaped sealing structure 22 to restore the sealing state.

[0044] When there is pressure inside the drain pipe, that is, when the pressure value inside the drain pipe is greater than the pressure value inside the room, the umbrella-shaped sealing structure 22 in the upper drain core 2 and the lower drain core 3 will fit more tightly under the pressure, further enhancing its sealing effect.

[0045] In summary, this utility model has the following effects:

[0046] (1) This utility model can effectively block high-temperature smoke in the pipeline under fire conditions, withstand high-temperature smoke for no less than 1.5 hours, greatly improve fire safety, ensure that it can still maintain its function in the event of a fire and ensure that it will not fail for a long time.

[0047] (2) This utility model has a double-sealed structure with excellent sealing performance, which can achieve efficient anti-backflow and anti-odor effects, and has good pressure resistance and sealing performance.

[0048] (3) This utility model does not affect the normal drainage of the floor drain. After testing, the drainage effect is not less than 0.3L / S, which meets the national standard.

[0049] (4) This utility model is easy to install, maintain and clean. It does not require replacement or modification of the existing floor drain. You can simply insert the floor drain core and use it.

[0050] (5) The umbrella-shaped sealing structure 22 of this utility model, based on the principle of repulsion between like poles of strong magnets, and the selection of materials, has a longer service life and structural stability.

[0051] Therefore, this utility model integrates multiple functions such as drainage, fire prevention, pressure resistance, high-efficiency sealing, and prevention of smoke infiltration, backflow prevention, and odor prevention, ensuring excellent sealing performance under various working conditions. It also maintains the integrity of fire-resistant zones, significantly reducing the manpower, material resources, and time costs required for routine maintenance of floor drains, ensuring the safe and stable operation of nuclear power facilities, and is expected to play an important practical role in future nuclear power construction and maintenance.

[0052] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0054] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fireproof and pressure-resistant floor drain without sealing fluid, characterized in that, It includes a main sleeve and a fireproof floor drain core. The fireproof floor drain core includes an upper floor drain core and a lower floor drain core. The upper floor drain core and the lower floor drain core are distributed vertically inside the main sleeve and are both sealed to the main sleeve. The fireproof floor drain core includes a fixed bracket, an umbrella-shaped sealing structure, and a magnetic base. The top side wall of the fixed bracket is sealed to the main sleeve. The umbrella-shaped sealing structure includes an umbrella surface and a support rod. The umbrella surface is fixedly connected to the first end of the support rod. The magnetic base is located at the bottom of the fixed bracket and has a hollow channel. The second end of the support rod is provided with a first magnet and is slidably connected to the first end of the hollow channel. The second end of the hollow channel is provided with a second magnet. The first magnet and the second magnet have the same magnetism. The umbrella surface is tightly fitted to the top opening of the fixed bracket.

2. The fireproof and pressure-resistant floor drain without sealing liquid according to claim 1, characterized in that, It also includes a first sealing ring and a second sealing ring. The first sealing ring is disposed at the connection between the fixed bracket and the main body sleeve, and the second sealing ring is disposed at the contact surface between the top opening of the fixed bracket and the umbrella surface.

3. A fireproof and pressure-resistant floor drain without sealing fluid according to claim 2, characterized in that, The first sealing ring and the second sealing ring are fluororubber sealing rings.

4. A fireproof and pressure-resistant floor drain without sealing fluid according to claim 1, characterized in that, The first magnet includes a first magnetic core and a second magnetic core arranged vertically and having opposite magnetic properties. The second magnet includes a third magnetic core and a fourth magnetic core arranged vertically and having opposite magnetic properties. The second magnetic core has the same magnetic properties as the third magnetic core.

5. A fireproof and pressure-resistant floor drain without sealing liquid according to claim 1, characterized in that, The top sidewall of the fixed bracket is threadedly connected to the main sleeve.

6. A fireproof and pressure-resistant floor drain without sealing fluid according to claim 1, characterized in that, The top of the fixed bracket is provided with a handle.

7. A fireproof and pressure-resistant floor drain without sealing fluid according to claim 1, characterized in that, The bottom of the magnetic base is provided with a disassembly hole.

8. A fireproof and pressure-resistant floor drain without sealing fluid according to claim 1, characterized in that, The fixed support is a frustum-like structure, and multiple arc-shaped ribs with their centers on the inside are evenly distributed on the side of the fixed support. The cross-sectional dimensions formed by the multiple arc-shaped ribs decrease sequentially from top to bottom, and the outer contour dimension of the umbrella surface is located between the minimum and maximum cross-sectional dimensions formed by the multiple arc-shaped ribs.

9. A fireproof and pressure-resistant floor drain without sealing fluid according to any one of claims 1 to 7, characterized in that, The main sleeve and the fireproof drain core (excluding the first magnet and the second magnet) are all made of 316 stainless steel.

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