Fire service elevator drainage structure

Abstract

This utility model discloses a drainage structure for a fire-fighting elevator, including an elevator shaft, a sump pit, and a drainage pump. The elevator shaft extends vertically and has a base plate at its bottom. A first water passage is formed in the base plate to allow water accumulated in the elevator shaft to flow into the sump pit below. The sump pit is partially located directly below the elevator shaft, and the base plate of the elevator shaft directly covers the top of the sump pit, forming a cover. The drainage pump is installed inside the sump pit outside the elevator shaft, and its outlet is connected to a public drainage pipe via a pipeline. In the embodiment provided by this utility model, there is no need to install a connecting pipe between the elevator shaft and the sump pit, avoiding the problems of complex pipe construction and difficult maintenance. At the same time, the base plate directly covers the sump pit, simplifying the structure. The sump pit is divided into a first area and a second area, reducing the depth of the sump pit and reducing costs. It meets the specifications while improving the application of this technical measure in engineering.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a drainage structure for fire-fighting elevators. Background Technology

[0002] According to the relevant provisions of the "Code for Fire Protection Design of Buildings" GB50016-2014, drainage facilities should be installed at the bottom of the fire elevator shaft. The bottom of the fire elevator is usually located on the first floor or in the basement, and the elevation of the elevator shaft bottom is lower than the outdoor ground level. According to the relevant provisions of the "Standard for Design of Building Water Supply and Drainage" GB50015-2019, a sump pit for drainage should be installed at the bottom of the fire elevator. In existing technology, there are two methods for installing this sump pit: First, a sump pit is set up near the fire elevator, and drainage is achieved by installing a drainage pipe inside the sump pit and connecting it to the bottom of the fire elevator. Second, a sump pit is set up adjacent to the fire elevator, with an opening in the wall shared by the sump pit and the fire elevator, or by installing a pipe connection, to achieve the drainage effect.

[0003] However, the first approach has the following drawbacks: the sump and the fire elevator are connected by pipes, which are generally located below the basement floor slab. These pipes require steel or cast iron pipes and should be encased in concrete. Waterproof sleeves should be used at the connection points. The construction process is complex, and improper construction can cause water from the soil to seep into the sump, making maintenance impossible. The only solution for the seeping water is to frequently start the water pump to drain it. The second approach has the following drawbacks: the sump is located adjacent to the fire elevator. The effective volume of the sump should be calculated from the bottom of the sump. To meet the specifications, a folded plate needs to be installed between the sump floor slab and the basement floor slab. Generally, the sump floor slab needs to be about 1.5 meters lower than the elevator basement floor, increasing the depth of the basement and consequently increasing the cost. Utility Model Content

[0004] The present invention aims to provide a fire elevator drainage structure that eliminates the need for pipe installation, facilitates maintenance, reduces the depth of the sump, simplifies construction, and lowers costs.

[0005] To solve the above-mentioned technical problems, this utility model provides a drainage structure for a fire elevator, comprising:

[0006] An elevator shaft extends vertically and has a base plate at the bottom of the elevator shaft, with a first water passage hole provided on the base plate.

[0007] A sump is provided below the elevator shaft, and a base plate covers the top of the sump; and,

[0008] A drainage pump is installed in the sump, and the outlet of the drainage pump is used to connect to a public drainage pipeline.

[0009] The sidewall of the elevator shaft extends to the bottom of the sump pit to divide the sump pit into a first region and a second region. In a vertical projection view, the first region coincides with the elevator shaft, and the second region is offset from the elevator shaft.

[0010] Optionally, a second water passage is provided on the side wall located between the first region and the second region. The second water passage is disposed close to the bottom side of the water collection pit, and the drainage pump is disposed in the second region.

[0011] Optionally, a filter screen is provided at the first water passage.

[0012] Optionally, the second water passage is square in shape, and the side length of the second water passage is less than or equal to 0.2m.

[0013] Optionally, two second water passages are provided, and the two second water passages are arranged at intervals along the bottom edge of the sidewall, with a distance of 0.2m or more between the two second water passages.

[0014] Optionally, in a projection view along the vertical direction, the second region is located on one side of the elevator shaft in a first direction, which is perpendicular to the vertical direction, and the size of the second region in the first direction is greater than or equal to 0.8m and less than or equal to 1m.

[0015] Optionally, multiple first water passages are provided, and the multiple water passages are distributed at intervals on the bottom plate.

[0016] Optionally, the upper side of the base plate is inclined from bottom to top along the first direction, and two first water passages are provided, with the two first water passages corresponding to each other at the two corners of the elevator shaft away from the second area.

[0017] Optionally, multiple elevator shafts are provided, and the multiple elevator shafts are arranged sequentially along a first direction. The water collection pit is correspondingly located below one of the elevator shafts and at the end of the multiple elevator shafts in the first direction. A partition wall is provided between two adjacent elevator shafts in the first direction. Multiple third water passages are provided at the bottom of each partition wall, and the multiple third water passages are distributed at intervals along the bottom edge of the partition wall.

[0018] Optionally, the first water passage is square in shape, and the side length of the first water passage is less than or equal to 0.2m; and / or,

[0019] The distance between the bottom of the sump and the bottom of the elevator shaft is H in the vertical direction, where H is greater than or equal to 1m and less than 1.5m.

[0020] The technical solution provided by this utility model has the following advantages:

[0021] This utility model provides a drainage structure for a fire-fighting elevator, including an elevator shaft, a sump pit, and a drainage pump. The elevator shaft extends vertically and has a base plate at its bottom. A first water passage is formed in the base plate to allow water accumulated in the elevator shaft to flow into the sump pit below. The sump pit is partially located directly below the elevator shaft, and the base plate of the elevator shaft directly covers the top of the sump pit, forming a cover. The drainage pump is installed inside the sump pit outside the elevator shaft, and its outlet is connected to a public drainage pipe via a pipeline. In the embodiment provided by this utility model, there is no need to install a connecting pipe between the elevator shaft and the sump pit, avoiding the problems of complex pipe construction and difficult maintenance. At the same time, the base plate directly covers the sump pit, simplifying the structure. The sump pit is divided into a first area and a second area, reducing the depth of the sump pit and reducing costs. It meets the specifications while improving the application of this technical measure in engineering. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A plan view of the first embodiment of the fire elevator drainage structure provided by this utility model;

[0024] Figure 2 A plan view of the second embodiment of the fire elevator drainage structure provided by this utility model;

[0025] Figure 3 for Figure 1 and Figure 2 Sectional view at point AA.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10-Elevator shaft; 11-Base slab; 111-First water passage; 12-Side wall; 121-Second water passage; 13-Partition wall; 131-Third water passage; 20-Sump pit; 21-First area; 22-Second area; 30-Drainage pump. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] This utility model provides a drainage structure for a fire-fighting elevator. During a fire, a large amount of water is generated during firefighting (such as water from sprinkler systems, water used by firefighters, and water seeping from floors or walls). This water may flow into the hoistway, bottom of the car, or machine room of the fire-fighting elevator. Specifically, the fire-fighting elevator drainage structure includes a sump 20 to collect this accumulated water, preventing water from directly submerging the elevator's mechanical components. In the prior art, the sump 20 is usually located near the fire-fighting elevator or adjacent to the elevator pit.

[0031] However, the connection between the sump 20 and the fire elevator via pipes, typically located below the basement floor slab 11, requires the use of steel or cast iron pipes with concrete enclosure. Waterproof sleeves should be used at the connection points. This complex construction process can easily lead to water seeping into the sump 20 from the soil, making maintenance impossible. The only solution for the seeping water is frequent pumping. Since the sump 20 is located adjacent to the fire elevator, the effective volume water level of the sump 20 should be calculated from its bottom. To meet regulatory requirements, a folded plate needs to be installed between the sump 20 floor slab 11 and the basement floor slab 11. Generally, the sump 20 floor slab 11 needs to be approximately 1.5 meters lower than the elevator basement floor, increasing the depth of the basement and consequently increasing costs.

[0032] To resolve the above technical issues, please refer to [link / reference]. Figures 1 to 3This utility model provides a drainage structure for a fire-fighting elevator, including an elevator shaft 10, a sump 20, and a drainage pump 30. The elevator shaft 10 extends vertically, and a base plate 11 is provided at its bottom. A first water passage 111 is provided on the base plate 11 to allow water accumulated in the elevator shaft 10 to flow into the sump below. The sump 20 is partially located directly below the elevator shaft 10, and the base plate 11 of the elevator shaft 10 directly covers the top of the sump 20, forming a cover over the sump 20. The drainage pump 30 is installed inside the sump 20, located on the outside of the elevator shaft 10. Its outlet is connected to a public drainage pipeline through a pipe to drain the water accumulated in the sump 20. In this embodiment, the public drainage pipeline refers to a unified drainage system installed inside and outside the building, which can drain accumulated water to the outdoor municipal pipe network or a designated drainage area. Furthermore, the sidewall 12 of the elevator shaft 10 extends downward to the bottom of the sump 20, thereby dividing the sump 20 into a first region 21 and a second region 22. In a vertical projection view, the first region 21 completely coincides with the projection of the elevator shaft 10, while the second region 22 is offset from the projection of the elevator shaft 10.

[0033] Specifically, the first water passage 111 can be set to one or more depending on the drainage needs, and the drainage pump 30 can be selected from models with different head and flow rates, as long as the drainage capacity is met. When water accumulates in the elevator shaft 10, the water flows into the sump 20 below through the first water passage 111 on the base plate 11. The drainage pump 30 in the sump 20 starts when the water level reaches the set height, pumping the accumulated water through the outlet end to the public drainage pipeline to achieve the drainage function.

[0034] In this embodiment, there is no need to install connecting pipes between the elevator shaft 10 and the sump 20, which avoids the problems of complicated pipe construction and difficult maintenance. At the same time, the base plate 11 directly covers the sump 20, which simplifies the structure. The sump 20 is divided into a first area 21 and a second area 22, which reduces the depth of the sump 20, reduces the cost, meets the specifications, and improves the application of this technical measure in the project.

[0035] Optionally, a second water passage 121 is provided on the side wall 12 located between the first region 21 and the second region 22. The second water passage 121 is set close to the bottom side of the water collection pit 20, that is, the lower edge of the second water passage 121 is flush with or nearly flush with the bottom of the water collection pit 20, to ensure that the accumulated water can flow smoothly into the second region 22. The drainage pump 30 is set in the second region 22. Preferably, the position of the second region 22 can be set on any side of the elevator shaft 10 in the horizontal direction according to the actual layout, as long as it is offset from the vertical projection of the elevator shaft 10. The drainage pump 30 can be installed vertically or horizontally in the second region 22, depending on the space of the water collection pit 20. The side wall 12 can extend vertically downward or at a certain angle, as long as it can divide the water collection pit 20 into two regions. The shape of the second water passage 121 is not limited, and it can be square, circular, elliptical, etc., as long as it meets the water passage area requirements.

[0036] In this embodiment, water accumulated in the elevator shaft 10 flows into the first area 21 of the sump 20 through the first water passage 111. Since the second water passage 121 is positioned close to the bottom, water flows from the first area 21 into the second area 22 through the second water passage 121. The drainage pump 30 is located in the second area 22 to discharge the flowing water. The low-lying position of the second water passage 121 ensures effective water inflow, improving drainage efficiency, and eliminates the need for additional pipe connections, resulting in a more compact structure.

[0037] Furthermore, the first water passage 111 is covered with a filter screen, which filters out most of the impurities and leaves them in the elevator shaft, allowing for cleaning while the elevator is being maintained.

[0038] Based on the above embodiment, the second water passage 121 is square, with a side length of less than or equal to 0.2 meters. This size ensures water flow capacity while preventing larger debris from entering the second area 22 through the second water passage 121, thus avoiding blockage of the drainage pump 30. In this way, the square second water passage 121, with its regular shape, facilitates construction and, due to its limited side length, effectively intercepts larger debris. Accumulated water flows into the second area 22 through the square opening, allowing the drainage pump 30 to operate normally and drain water. The size limitation ensures drainage efficiency and also serves as a preliminary filter for debris, reducing the risk of blockage of the drainage pump 30 and improving system reliability.

[0039] Furthermore, two second drainage holes 121 are provided, spaced apart along the bottom edge of the sidewall 12, with a distance of 0.2 meters or more between them. This arrangement increases the drainage area and improves the drainage speed, while the spacing prevents a reduction in structural strength between the two drainage holes. When there is a large amount of water accumulation in the first area 21, the two spaced-apart second drainage holes 121 drain water simultaneously, accelerating the flow of water into the second area 22 and preventing excessive water accumulation in the first area 21. The spacing ensures the structural stability of the sidewall 12. Thus, by increasing the number of drainage holes and setting a reasonable spacing, the drainage efficiency is effectively improved while ensuring the strength of the sidewall 12, making the structure more reliable.

[0040] Based on the above embodiment, in the projection view along the vertical direction, the second region 22 is located on one side of the elevator shaft 10 in the first direction, where the first direction is a horizontal direction perpendicular to the vertical direction (e.g., left-right or front-back direction), and the dimension of the second region 22 in the first direction is greater than or equal to 0.8 meters and less than or equal to 1 meter. This size range ensures that the second region 22 has sufficient space to install the drainage pump 30 and related pipes, while preventing the overall size of the sump 20 from becoming too large, thus saving space and cost.

[0041] In this embodiment, the dimensions of the second region 22 in the specified direction ensure the installation space for the drainage pump 30 and its accessories. After the accumulated water flows into the region from the first region 21 through the second water passage 121, the drainage pump 30 has sufficient operating space for installation and maintenance. At the same time, reasonable size control makes the water collection pit 20 compact in structure.

[0042] Optionally, multiple first drainage holes 111 are provided, and these first drainage holes 111 are distributed at intervals on the base slab 11. Multiple first drainage holes 111 can increase the inflow rate of water within the elevator shaft 10, preventing water accumulation on the base slab 11. In specific implementations, the number of first drainage holes 111 can be three, four, etc., adjusted according to the area of ​​the base slab 11 and drainage requirements. The interval distribution can be uniform or targeted at areas where water may concentrate.

[0043] In this embodiment, water accumulated in the elevator shaft 10 flows rapidly into the first area 21 of the sump 20 through multiple spaced first water passages 111 on the base plate 11, preventing water from stagnating on the base plate 11. The multiple water passages improve drainage efficiency. Thus, by increasing the number and reasonable distribution of the first water passages 111, water accumulated in the elevator shaft 10 can be drained more effectively, ensuring that there is no water accumulation at the bottom of the elevator shaft 10 and meeting fire drainage requirements.

[0044] Furthermore, the upper side of the base plate 11 is inclined upwards along the first direction, forming a slope. The lower side is closer to the second area 22, and the higher side is farther away from the second area 22. Two first drainage holes 111 are provided, corresponding to the two corners of the elevator shaft 10 away from the second area 22. This inclined arrangement and drainage hole placement design utilize gravity to allow accumulated water to flow along the slope of the base plate 11 towards the corners away from the second area 22, flowing into the collection pit 20 through the two first drainage holes 111, thus preventing water accumulation on the base plate 11. It should be noted that the upward inclination refers to a gradual increase in slope from the side closer to the second area 22 to the side farther away from the second area 22. The inclination angle of the base plate 11 can be adjusted according to actual conditions, as long as gravity drainage of accumulated water is achieved.

[0045] In this embodiment, the slope of the base plate 11 causes the water in the elevator shaft 10 to flow naturally to the two corners away from the second area 22, and then flows into the first area 21 of the water collection pit 20 through the first water passage 111 set in the corner, using gravity to assist drainage and improve drainage efficiency.

[0046] like Figure 1 As shown, in the first embodiment provided by this utility model, the elevator shaft 10 can be configured as a single unit. In the second embodiment provided by this utility model, as... Figure 2 As shown, when multiple elevator shafts 10 are provided, the multiple elevator shafts 10 are arranged sequentially along the first direction. The sump pit 20 is correspondingly located below one of the elevator shafts 10 and at the end of the multiple elevator shafts 10 in the first direction. A partition wall 13 is provided between two adjacent elevator shafts 10 in the first direction. The bottom of each partition wall 13 is provided with multiple third water passages 131, which are distributed at intervals along the bottom edge of the partition wall 13. This arrangement allows water accumulated in the multiple elevator shafts 10 to flow into the sump pit 20 below the elevator shaft 10 with the sump pit 20 through the third water passages 131 at the bottom of the partition wall 13, so that multiple elevator shafts 10 can share a single sump pit 20, saving space and cost.

[0047] The number and spacing of the third water passages 131 can be adjusted according to the length of the partition wall 13 and drainage requirements. In this embodiment, water accumulated in multiple elevator shafts 10 flows into the bottom space through the first water passages 111 on their respective base plates 11, and then flows through the third water passages 131 at the bottom of adjacent partition walls 13 to the area below the elevator shaft 10 where a sump pit 20 is located. The accumulated water is then discharged from the sump pit 20 by a drainage pump 30. The beneficial effect is that multiple elevator shafts 10 can share a single sump pit 20, reducing the number of sump pits 20, saving construction costs and underground space. At the same time, the setting of the third water passages 131 ensures the flow of accumulated water and meets the drainage needs of multiple elevator shafts 10.

[0048] Based on the above embodiments, the first drainage hole 111 is square in shape, and its side length is less than or equal to 0.2 meters. And / or, the vertical distance H between the bottom of the sump 20 and the bottom of the elevator shaft 10 is greater than or equal to 1 meter and less than 1.5 meters. The square shape and size limitation of the first drainage hole 111 prevent debris from entering, and the distance H between the bottom of the sump 20 and the bottom of the elevator shaft 10 meets regulatory requirements while avoiding excessive depth of the sump 20, which would increase construction costs. Here, "distance H" refers to the vertical distance between the bottom of the sump 20 and the bottom of the elevator shaft 10 base plate 11.

[0049] In this embodiment, when the first drainage tunnel 111 is square and its side length is less than or equal to 0.2 meters, it can intercept larger debris and prevent blockages. When H is between 1 meter and 1.5 meters, the sump pit 20 has sufficient volume to hold accumulated water, while its depth is moderate, facilitating construction. Thus, through the design of the dimensions of the first drainage tunnel 111 and the depth range of the sump pit 20, the reliability of the drainage function is ensured, while avoiding the increased cost caused by an excessively deep sump pit 20, thus meeting both regulatory requirements and actual engineering needs.

[0050] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the protection scope of this utility model.

Claims

1. A fire service elevator drainage structure characterized by comprising: include: An elevator shaft extends vertically and has a base plate at the bottom of the elevator shaft, with a first water passage hole provided on the base plate. A sump is located below the elevator shaft, and a base plate covers the top of the sump. as well as, A drainage pump is installed in the sump, and the outlet of the drainage pump is used to connect to a public drainage pipeline. The sidewall of the elevator shaft extends to the bottom of the sump pit to divide the sump pit into a first region and a second region. In a vertical projection view, the first region coincides with the elevator shaft, and the second region is offset from the elevator shaft.

2. The fire service elevator drainage arrangement of claim 1, wherein, A second water passage is provided on the side wall located between the first region and the second region. The second water passage is located close to the bottom side of the water collection pit, and the drainage pump is located in the second region.

3. The fire service elevator drainage arrangement of claim 2, wherein, The first water passage is covered with a filter screen.

4. The fire service elevator drainage arrangement of claim 2, wherein, The second water passage is square in shape, and the side length of the second water passage is less than or equal to 0.2m.

5. The fire service elevator drainage arrangement of claim 4, wherein, There are two second water passages, which are spaced apart along the bottom edge of the sidewall, and the distance between the two second water passages is greater than or equal to 0.2m.

6. The fire service elevator drainage arrangement of claim 5, wherein, In a projection view along the vertical direction, the second region is located on one side of the elevator shaft in the first direction, which is perpendicular to the vertical direction, and the size of the second region in the first direction is greater than or equal to 0.8m and less than or equal to 1m.

7. The fire service elevator drainage arrangement of claim 6, wherein, The first water passage is provided in multiple ways, and the multiple water passages are distributed at intervals on the bottom plate.

8. The fire service elevator drainage arrangement of claim 7, wherein, The upper side of the base plate is inclined from bottom to top along the first direction. There are two first water passages, which are respectively located at the two corners of the elevator shaft away from the second area.

9. The fire service elevator drainage arrangement of any of claims 6 to 8, wherein, The elevator shafts are provided in multiple ways, and the multiple elevator shafts are arranged sequentially along a first direction. The water collection pit is located below one of the elevator shafts and at the end of the multiple elevator shafts in the first direction. A partition wall is provided between two adjacent elevator shafts in the first direction. The bottom of each partition wall is provided with multiple third water passages, and the multiple third water passages are distributed at intervals along the bottom edge of the partition wall.

10. The fire service elevator drainage arrangement of claim 1, wherein, The first water passage is square in shape, and the side length of the first water passage is less than or equal to 0.2m; and / or, The distance between the bottom of the sump and the bottom of the elevator shaft is H in the vertical direction, where H is greater than or equal to 1m and less than 1.5m.

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