Automatic water-isolating device for underground facilities of a building

Abstract

The present invention relates to the technical field of water conservancy devices, and discloses an automatic water-isolating device for underground facilities in a building, comprising a support plate, a drainage trough fixedly arranged on one side of the support plate, a movable baffle and a driving component for driving the movable baffle to rise, the movable baffle passes through the support plate and slides with the support plate, and a first filter component and a second filter component are arranged at the bottom of the inner cavity of the drainage trough; the present invention effectively solves the problem of reduced drainage capacity caused by debris clogging the filter screen in the early stage of heavy rain by setting a switchable first filter component and a second filter component; when the drainage efficiency of the first filter component is affected by the accumulation of debris, the movable baffle drives the first filter screen to rotate out of the filtering position during the rising process, and automatically switches to the unblocked second filter component to continue working, thereby ensuring the continuous smooth flow of the drainage channel; the design makes full use of the lifting power of the movable baffle to realize the switching of the filter layer, without the need to add an independent driving device.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy devices, in particular to an automatic water-isolating device for underground building facilities. Background Art

[0002] With the acceleration of urbanization and the development of modern construction technology, underground spaces in various buildings have been widely developed and utilized, such as underground parking lots, underground shopping malls, basements, etc. However, while these underground facilities bring convenience to people's lives and work, they also face many safety hazards, among which rainwater leakage is particularly prominent. Long-term soaking or infiltration of rainwater into underground facilities will not only damage the building structure and shorten the service life of the building, but may also cause a series of safety problems such as short circuit of electrical equipment and slippery ground, seriously affecting the normal use of underground facilities and personnel safety.

[0003] Chinese patent CN104294799A discloses an automatic water-proof structure for underground facilities in a building, including a ground, a wall structure built on the ground, a movable baffle door arranged inside the ground and flush with the ground, and its two sides extending into the open track of the wall structure; a drainage dark channel is arranged in front of the movable baffle door, a dark pool is symmetrically arranged in the open track, and a channel is connected between the dark pool and the drainage dark channel; a water-bearing bucket with a central gear installed on the top is arranged in the dark pool, and the drainage channel is connected to the bottom of the dark pool, and fixed gears 1 and 2 are installed on both sides of the central gear, one end of the transmission chain is connected to the top of the movable baffle door and passes around the fixed gear 1, the central gear and the fixed gear 2 in sequence, and the other end is connected to a gravity block. When a flood comes, the door can be automatically sealed without supervision, effectively preventing water from entering the building.

[0004] As shown in the above patent, the existing automatic water-isolating device for underground facilities in buildings generally prevents water from entering the building by raising the movable baffle door to a height above the water surface. A drainage ditch is set on the outside of the movable baffle door for drainage. Generally, ground water accumulation is often caused by insufficient drainage capacity during heavy rain. This is mainly because in the early stage of heavy rain, the water flow will wash the debris on the ground into the drainage ditch. As these debris accumulate in the drainage ditch, the filtration structure is prone to blockage, which in turn causes the drainage system to be unable to operate effectively when heavy rain comes, and ultimately causes the water to overflow the drainage ditch into the interior of the building. Relying solely on the raising of the movable baffle door is not enough to fundamentally solve the problem.

[0005] Therefore, it is necessary to provide an automatic water-isolating device for underground building facilities to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide an automatic water-isolating device for underground facilities in buildings, which effectively solves the problem of reduced drainage capacity caused by debris clogging the filter net in the early stage of heavy rain by setting a switchable first filter component and a second filter component.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic water-isolating device for underground facilities in a building, comprising a support plate, a drainage trough fixedly arranged on one side of the support plate, a movable baffle and a driving assembly for driving the movable baffle to rise, the movable baffle passes through the support plate and slides with the support plate, a first filter assembly and a second filter assembly are arranged at the bottom of the inner cavity of the drainage trough, the first filter assembly is located above the second filter assembly, the first filter assembly comprises a first mounting frame, a first filter screen fixedly arranged inside the first mounting frame and a transmission component, the transmission component is connected to the movable baffle in transmission, so that when the movable baffle moves upward, the transmission component drives the first mounting frame to rotate upward to a vertical state.

[0008] The present invention is further configured as follows: the transmission component includes a rope winding wheel, a first traction rope and a connecting block, the first mounting frame is rotatably connected to the drainage groove through a rotating shaft, and the rotating shaft is fixedly connected to the first mounting frame, the end of the rotating shaft passes through the side wall of the drainage groove, the rope winding wheel is fixedly sleeved on the end of the rotating shaft, the connecting block is fixedly installed on the bottom of the side wall of the movable baffle door, one end of the first traction rope is fixedly connected to the connecting block, and the other end of the first traction rope is wound around the rope winding wheel.

[0009] The present invention is further configured as follows: a storage box is fixedly mounted on one side of the drainage groove close to the movable baffle door, and a window communicating with the inner cavity of the storage box is formed on the side wall of the drainage groove close to the storage box.

[0010] The present invention is further configured as follows: a baffle is fixedly installed on one side of the first installation frame close to the storage box, the baffle and the first installation frame are arranged perpendicular to each other, the top of the baffle is fixedly connected to an elastic blocking net, and the top of the elastic blocking net is fixedly connected to the top wall of the window opened on the side wall of the storage box.

[0011] The present invention is further configured as follows: vertical plates are fixedly mounted on both sides of the top of the support plate, and both sides of the movable baffle are respectively slidably matched with the two vertical plates.

[0012] The present invention is further configured as follows: the driving assembly includes a transmission box fixedly installed on the top of the vertical plate, a second traction rope, a fixed pulley and a counterweight plate rotatably installed in the transmission box, one end of the second traction rope is fixedly connected to the top wall of the movable baffle door, the other end of the second traction rope is fixedly connected to the counterweight plate after passing over the fixed pulley, a guide rail is fixedly installed on the side wall of the storage box away from the drainage trough, the counterweight plate is slidably installed on the guide rail, and a locking assembly for locking the counterweight plate is provided on the top of the storage box.

[0013] The present invention is further configured as follows: the locking assembly includes a support box, a slide plate slidably mounted inside the support box and a one-way block fixedly mounted on the slide plate, the support box is fixedly mounted on the top end of the storage box, a slot is provided on the side of the counterweight plate close to the support box, one side of the one-way block extends into the slot, a spring is arranged inside the support box, the slide plate is elastically connected to the inner wall of the support box through the spring, a protective box is fixedly mounted on the inner wall of the drainage groove, a side wall of the protective box away from the storage box is open, a floating plate is arranged inside the protective box, the floating plate is a hollow structure, and the slide plate is connected to the floating plate by a connecting rope.

[0014] The present invention is further configured as follows: the second filter assembly includes a second mounting frame, a sliding rod slidably mounted on the inner side of the second mounting frame, and a third traction rope; the second mounting frame is fixedly mounted inside the drainage trough, and the second mounting frame is located below the first mounting frame; a mounting box is fixedly mounted on a side of the second mounting frame away from the storage box; a roller is rotatably mounted in the mounting box, a second filter screen is wound around the roller, one end of the second filter screen extends out of the mounting box and is fixedly connected to the sliding rod, one end of the third traction rope is fixedly connected to the sliding rod, and the other end of the third traction rope passes through the side wall of the drainage trough and is fixedly connected to the bottom wall of the movable baffle door.

[0015] The present invention is further configured as follows: a fixed shaft is fixedly installed inside the installation box, the roller is sleeved on the fixed shaft, a spring is arranged on the inner side of the roller, one end of the spring is fixedly connected to the outer peripheral wall of the fixed shaft, and the other end of the spring is fixedly connected to the inner peripheral wall of the roller.

[0016] The present invention is further configured as follows: a cover plate is fixedly arranged on the top of the drainage groove, and a drainage groove is formed on the cover plate.

[0017] In summary, the present invention has the following beneficial effects: the present invention effectively solves the problem of reduced drainage capacity caused by debris clogging the filter screen in the early stage of heavy rain by setting a switchable first filter component and a second filter component. When the drainage efficiency of the first filter component is affected by the accumulation of debris, the movable baffle door rises and drives the first filter screen to rotate out of the filtering position, and automatically switches to the unblocked second filter component to continue working, ensuring the continuous smooth flow of the drainage channel. The design makes full use of the lifting power of the movable baffle door to realize the switching of the filter layer, without the need to add an independent drive device. The structure has strong linkage and timely response, which significantly improves the anti-clogging ability and drainage stability of the drainage system in extreme weather, and fundamentally avoids the problem of water backflow caused by drainage failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention after the drainage groove is removed; Figure 4 It is a structural schematic diagram of the movable baffle door, the first filter assembly and the transmission component of the present invention; Figure 5 It is a schematic diagram of the structure of the storage box, the locking assembly and the driving assembly of the present invention; Figure 6 It is a cross-sectional structural schematic diagram of the counterweight plate and the locking assembly of the present invention; Figure 7 is a schematic structural diagram of the second filter assembly of the present invention; Figure 8 It is a schematic cross-sectional structural diagram of the installation box of the present invention.

[0019] In the figure: 1, drainage trough; 101, window; 2, support plate; 3, cover plate; 4, vertical plate; 5, movable baffle; 6, first filter assembly; 61, first installation frame; 62, first filter screen; 63, baffle; 64, rotating shaft; 65, rope wheel; 66, first traction rope; 67, connecting block; 7, second filter assembly; 71, second installation frame; 72, installation box; 73, slide rod; 74, third traction rope; 75 , fixed shaft; 76, spring; 77, roller; 78, second filter; 8, storage box; 9, counterweight plate; 901, slot; 10, transmission box; 11, fixed pulley; 12, second traction rope; 13, guide rail; 14, locking assembly; 141, support box; 142, slide plate; 143, one-way block; 144, spring; 145, floating plate; 146, connecting rope; 15, protection box; 16, elastic blocking net. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1 to Figure 6 In an embodiment of the present invention, an automatic water-blocking device for underground facilities in a building includes a support plate 2, a drainage trough 1 fixedly arranged on one side of the support plate 2, a movable baffle 5 and a driving component for driving the movable baffle 5 to rise, the movable baffle 5 penetrates the support plate 2 and slides with the support plate 2, a cover plate 3 is fixedly arranged on the top of the drainage trough 1, a drainage groove is opened on the cover plate 3, the width of the drainage groove is 2cm-5cm, and larger debris can be intercepted by the drainage groove, the bottom of the drainage trough 1 is connected to the sewer or drainage pipe, and the bottom of the inner cavity of the drainage trough 1 is provided with a first The filter assembly 6 and the second filter assembly 7, the first filter assembly 6 is located above the second filter assembly 7, the first filter assembly 6 includes a first mounting frame 61, a first filter screen 62 fixedly mounted inside the first mounting frame 61 and a transmission component, the transmission component is connected to the movable baffle 5 by transmission, so that when the movable baffle 5 moves upward, the first mounting frame 61 is driven by the transmission component to rotate upward to a vertical state; in daily use, the first filter assembly 6 is used to filter the impurities entering the drainage groove 1, so there will be some debris on the first filter assembly 6, which reduces the drainage capacity. In addition, at the beginning of a rainstorm, debris on the ground gradually accumulates on the first filter screen 62 of the first filter assembly 6 under the action of the water flow, so that the drainage capacity of the first filter assembly 6 is gradually reduced, thereby causing the liquid level in the drainage trough 1 to gradually rise. When the water in the drainage trough 1 is about to overflow, the driving component drives the movable baffle 5 to move upward, thereby playing a water blocking role and preventing rainwater from entering the basement. At the same time, when the movable baffle 5 moves upward, it drives the first mounting frame 61 to rotate upward to a vertical state through the transmission component, thereby causing the first filter screen 62 to no longer block the rainwater entering the drainage trough 1. Filtering makes the second filter component 7 work. Since the second filter component 7 has not been used and most of the debris on the ground enters the drainage ditch 1 at the beginning of the heavy rain and accumulates on the surface of the first filter component 6, the subsequent second filter component 7 is not easy to be blocked, thereby ensuring the stable drainage of the subsequent drainage ditch 1, and can improve the drainage capacity during heavy rain, effectively avoiding the backflow of rainwater into the basement caused by insufficient drainage capacity of the drainage structure, and the rotation of the first filter component 6 is driven by the power when the movable baffle door 5 rises, without the need for other power drive structures to drive, with good synchronization and fast response speed.

[0022] In this embodiment, preferably, the transmission component includes a rope pulley 65, a first traction rope 66 and a connecting block 67, the first mounting frame 61 is rotatably connected to the drain trough 1 through a rotating shaft 64, and the rotating shaft 64 is fixedly connected to the first mounting frame 61, the end of the rotating shaft 64 passes through the side wall of the drain trough 1, the rope pulley 65 is fixedly sleeved on the end of the rotating shaft 64, the connecting block 67 is fixedly installed at the bottom of the side wall of the movable baffle door 5, one end of the first traction rope 66 is fixedly connected to the connecting block 67, and the other end of the first traction rope 66 is wound and installed on the rope pulley 65; when the movable baffle door 5 moves upward, the movable baffle door 5 pulls the end of the first traction rope 66 upward through the connecting block 67, thereby driving the rope pulley 65 to rotate, and when the rope pulley 65 rotates, it drives the rotating shaft 64 to rotate, and when the rotating shaft 64 rotates, it drives the first mounting frame 61 to rotate, so that the first filter screen 62 rotates to a vertical state.

[0023] In the present embodiment, preferably, a storage box 8 is fixedly installed on one side of the drainage trough 1 close to the movable baffle door 5, and a window 101 connected to the inner cavity of the storage box 8 is provided on the side wall of the drainage trough 1 close to the storage box 8. When a lot of debris is accumulated on the first filter screen 62, the accumulated debris can enter the storage box 8 as the first filter screen 62 rotates, preventing the debris from affecting the rotation of the first filter screen 62, so as to ensure that the first filter screen 62 can rotate to a vertical state.

[0024] In this embodiment, preferably, a baffle 63 is fixedly installed on one side of the first installation frame 61 close to the storage box 8, the baffle 63 and the first installation frame 61 are arranged perpendicular to each other, the top of the baffle 63 is fixedly connected to the elastic blocking net 16, and the top of the elastic blocking net 16 is fixedly connected to the top wall of the window 101 opened on the side wall of the storage box 8; through the stopping effect of the baffle 63 and the elastic blocking net 16, it is possible to prevent debris from entering the storage box 8 during daily use of the drain trough 1, thereby preventing the presence of debris from affecting the rotation of the first filter screen 62 and preventing the first filter screen 62 from being blocked. 2 cannot be rotated to a vertical state, resulting in that the movable baffle 5 cannot be fully raised. The setting of the baffle 63 enables the baffle 63 to move the bottom of the elastic blocking net 16 toward the storage box 8 when following the movement and rotation of the first installation frame 61, thereby forming a space with a triangular cross-section between the elastic blocking net 16, the baffle 63 and the first filter screen 62, so that the debris on the first filter screen 62 can be transferred to the formed space. In addition, due to the elasticity of the elastic blocking net 16 itself, when there are a lot of debris, the elastic blocking net 16 can also deform adaptively to ensure that it can accommodate enough debris.

[0025] See also Figure 2 to Figure 6In the embodiment of the present invention, both sides of the top of the support plate 2 are fixedly installed with vertical plates 4, and both sides of the movable baffle 5 are slidably matched with the two vertical plates 4 respectively, and the movable baffle 5 and the vertical plates 4 are kept sealed, and the vertical plates 4 are fixedly connected to the walls on both sides of the basement entrance and kept sealed; the driving assembly includes a transmission box 10 fixedly installed on the top of the vertical plate 4, a second traction rope 12, a fixed pulley 11 and a counterweight plate 9 rotatably installed in the transmission box 10, one end of the second traction rope 12 is fixedly connected to the top wall of the movable baffle 5, and the other end of the second traction rope 12 is fixedly connected to the counterweight plate 9 after passing through the fixed pulley 11, the side wall of the storage box 8 away from the drainage trough 1 is fixedly installed with a guide rail 13, and the counterweight plate 9 is slidably installed on the guide rail 13, and the top of the storage box 8 is provided with a locking assembly 14 for locking the counterweight plate 9; the locking assembly 14 includes a support box 141, a slide plate 142 slidably installed inside the support box 141 and a fixed installation The one-way block 143 mounted on the slide plate 142, the support box 141 is fixedly mounted on the top of the storage box 8, the counterweight plate 9 is provided with a slot 901 on the side close to the support box 141, one side of the one-way block 143 extends into the slot 901, the bottom of the one-way block 143 is provided with an inclined surface, the support box 141 is provided with a spring 144, the slide plate 142 is elastically connected to the inner side wall of the support box 141 through the spring 144, and the inner side wall of the drainage groove 1 is fixedly connected to the inner side wall of the drainage groove 1. A protective box 15 is fixedly installed, and a side wall of the protective box 15 away from the storage box 8 is opened. A floating plate 145 is arranged inside the protective box 15. The floating plate 145 is a hollow structure, so that the density of the floating plate 145 is smaller than that of water. The protective box 15 can protect the internal floating plate 145 to prevent rain from dripping on the floating plate 145. The slide plate 142 is connected to the floating plate 145 by a connecting rope 146; the overall weight of the counterweight plate 9 is greater than that of the movable baffle 5, preferably 1.5-2 times the weight, when heavy rain causes the water level in the drainage trough 1 to gradually rise, as rainwater enters the protection box 15, the floating plate 145 gradually floats upward, and when the floating plate 145 floats upward, it can pull the slide plate 142 through the connecting rope 146 to move in the direction away from the counterweight plate 9, and when the slide plate 142 moves, it drives the one-way block 143 to move, so that the one-way block 143 moves out of the slot 901, thereby releasing the lock on the counterweight plate 9, so that the counterweight plate 9 moves downward under its own weight, and when the counterweight plate 9 moves downward, the movable baffle 5 is pulled upward by the second traction rope 12, thereby driving the movable baffle 5 to rise, The power of the floating plate 145 movement releases the lock of the counterweight plate 9, so that when the water level in the drainage trough 1 is high, the counterweight plate 9 can automatically move downward to drive the movable baffle 5 to rise upward. There is no need to set an electrical drive structure for driving, and no manual operation is required. The movable baffle 5 can be automatically raised in an emergency, and the response speed is fast, which can respond to emergency flood seasons in a timely manner. After the flood is over, as the water level in the drainage trough 1 drops, the one-way block 143 is reset. At this time, the movable baffle 5 can be pulled upward to reset the counterweight plate 9, so that the one-way block 143 is reinserted into the card slot 901 to lock the counterweight plate 9, and the reset is more convenient.

[0026] See also Figure 2 , Figure 7 and Figure 8In the embodiment of the present invention, the second filter assembly 7 includes a second mounting frame 71, a slide bar 73 slidably mounted inside the second mounting frame 71, and a third traction rope 74. The second mounting frame 71 is fixedly mounted inside the drain trough 1, and the second mounting frame 71 is located below the first mounting frame 61. A mounting box 72 is fixedly mounted on the side of the second mounting frame 71 away from the storage box 8. A roller 77 is rotatably mounted in the mounting box 72. A second filter screen 78 is wound around the roller 77. The second filter screen 78 is fixedly mounted on the second mounting frame 71. One end of the third traction rope 74 extends out of the installation box 72 and is fixedly connected to the slide bar 73, one end of the third traction rope 74 is fixedly connected to the slide bar 73, and the other end of the third traction rope 74 passes through the side wall of the drainage groove 1 and is fixedly connected to the bottom wall of the movable baffle door 5. Elastic slide bars are provided on both sides of the second filter screen 78, and the elastic slide bars can move into the limiting grooves provided on the inner side walls of the second installation frame 71; a fixed shaft 75 is fixedly installed inside the installation box 72, and the roller 77 is sleeved on the fixed shaft 75. The inner The spring 76 is provided on the side, one end of the spring 76 is fixedly connected to the outer peripheral wall of the fixed shaft 75, and the other end of the spring 76 is fixedly connected to the inner peripheral wall of the roller 77; when the movable stopper 5 moves upward, the movable stopper 5 pulls the slide bar 73 toward the storage box 8 through the third traction rope 74, and the slide bar 73 moves to pull out the second filter screen 78 in the installation box 72, so that the second filter screen 78 is filled in the inner side of the second installation frame 71, so that the second filter screen 78 plays a filtering role. The setting of the spring 76 makes the third traction rope 74 pull the slide bar 73 toward the storage box 8. When the guide rope 74 is relaxed, under the action of the spring 76, the roller 77 rotates in the opposite direction and resets, so that the second filter screen 78 is rewound back onto the roller 77. In this embodiment, the second filter screen 78 that can be rolled up and released is arranged, so that when the first filter screen 62 is working, the second filter screen 78 is rolled up on the inner side of the installation box 72 for protection, so as to prevent the second filter screen 78 from being blocked due to long-term exposure to the external environment. It should be noted that after the flood season, it is necessary to clean up the debris in the drainage trough 1 and clean multiple filter screens.

[0027] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. An automatic water-proof device for underground facilities in a building, comprising a support plate, a drainage trough fixedly arranged on one side of the support plate, a movable baffle and a driving assembly for driving the movable baffle to rise, wherein the movable baffle passes through the support plate and slides with the support plate, and is characterized in that: A first filter assembly and a second filter assembly are provided at the bottom of the inner cavity of the drainage trough, the first filter assembly is located above the second filter assembly, the first filter assembly includes a first mounting frame, a first filter screen fixedly mounted inside the first mounting frame, and a transmission component, the transmission component is connected to the movable baffle door in a transmission manner, so that when the movable baffle door moves upward, the transmission component drives the first mounting frame to rotate upward to a vertical state.

2. The automatic water-isolating device for underground facilities in a building according to claim 1, characterized in that: The transmission component includes a rope winding wheel, a first traction rope and a connecting block. The first mounting frame is rotatably connected to the drainage groove through a rotating shaft, and the rotating shaft is fixedly connected to the first mounting frame. The end of the rotating shaft passes through the side wall of the drainage groove. The rope winding wheel is fixedly sleeved on the end of the rotating shaft, and the connecting block is fixedly installed on the bottom of the side wall of the movable baffle door. One end of the first traction rope is fixedly connected to the connecting block, and the other end of the first traction rope is wound and installed on the rope winding wheel.

3. The automatic water-isolating device for underground facilities in a building according to claim 2, characterized in that: A storage box is fixedly installed on one side of the drainage groove close to the movable baffle door, and a window communicating with the inner cavity of the storage box is opened on the side wall of the drainage groove close to the storage box.

4. The automatic water-isolating device for underground facilities in a building according to claim 3, characterized in that: A baffle is fixedly installed on one side of the first installation frame close to the storage box. The baffle and the first installation frame are arranged perpendicular to each other. The top of the baffle is fixedly connected to an elastic blocking net, and the top of the elastic blocking net is fixedly connected to the top wall of the window opened on the side wall of the storage box.

5. The automatic water-isolating device for underground facilities in a building according to claim 3, characterized in that: Vertical plates are fixedly mounted on both sides of the top of the support plate, and both sides of the movable baffle are respectively slidably matched with the two vertical plates.

6. The automatic water-isolating device for underground facilities in a building according to claim 5, characterized in that: The driving assembly includes a transmission box fixedly installed on the top of the vertical plate, a second traction rope, a fixed pulley and a counterweight plate rotatably installed in the transmission box, one end of the second traction rope is fixedly connected to the top wall of the movable baffle door, and the other end of the second traction rope is fixedly connected to the counterweight plate after passing over the fixed pulley. A guide rail is fixedly installed on the side wall of the storage box away from the drainage trough, and the counterweight plate is slidably installed on the guide rail. A locking assembly for locking the counterweight plate is provided on the top of the storage box.

7. The automatic water-isolating device for underground facilities in a building according to claim 6, characterized in that: The locking assembly includes a support box, a slide plate slidably mounted inside the support box, and a one-way block fixedly mounted on the slide plate. The support box is fixedly mounted on the top of the storage box. A slot is provided on the side of the counterweight plate close to the support box. One side of the one-way block extends into the slot. A spring is provided inside the support box. The slide plate is elastically connected to the inner wall of the support box through the spring. A protective box is fixedly mounted on the inner wall of the drainage groove. A side wall of the protective box away from the storage box is open. A floating plate is provided in the protective box. The floating plate is a hollow structure. The slide plate is connected to the floating plate by a connecting rope.

8. The automatic water-isolating device for underground facilities in a building according to claim 1, characterized in that: The second filter assembly includes a second mounting frame, a sliding rod slidably mounted on the inner side of the second mounting frame, and a third traction rope. The second mounting frame is fixedly mounted inside the drainage trough, and the second mounting frame is located below the first mounting frame. A mounting box is fixedly mounted on the side of the second mounting frame away from the storage box. A roller is rotatably mounted in the mounting box, and a second filter screen is wound around the roller. One end of the second filter screen extends out of the mounting box and is fixedly connected to the sliding rod. One end of the third traction rope is fixedly connected to the sliding rod, and the other end of the third traction rope passes through the side wall of the drainage trough and is fixedly connected to the bottom wall of the movable baffle door.

9. The automatic water-isolating device for underground facilities in a building according to claim 8, characterized in that: A fixed shaft is fixedly installed inside the installation box, the roller is sleeved on the fixed shaft, a spring is arranged on the inner side of the roller, one end of the spring is fixedly connected to the outer peripheral wall of the fixed shaft, and the other end of the spring is fixedly connected to the inner peripheral wall of the roller.

10. The automatic water-isolating device for underground building facilities according to claim 1, characterized in that: A cover plate is fixedly arranged on the top of the drainage groove, and a drainage groove is opened on the cover plate.

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