An automatic water isolation device for building underground facilities

Abstract

The present invention relates to the technical field of water conservancy devices, and discloses an automatic water isolation device for building underground facilities, which includes a support plate, a drainage groove fixedly arranged on one side of the support plate, a movable shutter, and a driving component for driving the movable shutter to rise. The movable shutter penetrates the support plate and is slidably matched with the support plate. A first filtering component and a second filtering component are arranged at the bottom of the inner cavity of the drainage groove; through the setting of the switchable first filtering component and second filtering component, the present invention effectively solves the problem of the decline in drainage capacity caused by the blockage of the filter screen by sundries in the initial stage of heavy rain. When the first filtering component affects the drainage efficiency due to the accumulation of sundries, the rising process of the movable shutter drives the first filter screen to rotate away from the filtering position, and automatically switches to the unblocked second filtering component to continue working, ensuring the continuous smoothness of the drainage channel. This design makes full use of the lifting power of the movable shutter to realize the switching of the filter layer without adding 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 isolation device for building underground facilities. By setting a switchable first filtering component and a second filtering component, the problem of reduced drainage capacity caused by debris clogging the filter screen in the initial stage of heavy rain is effectively solved.

[0007] The above technical object of the present invention is achieved through the following technical solutions: an automatic water isolation device for building underground facilities, including a support plate, a drainage groove fixedly arranged on one side of the support plate, a movable shutter, and a driving component for driving the movable shutter to rise. The movable shutter penetrates the support plate and is slidably matched with the support plate. A first filtering component and a second filtering component are arranged at the bottom of the inner cavity of the drainage groove. The first filtering component is located above the second filtering component. The first filtering component includes a first installation frame, a first filter screen fixedly installed inside the first installation frame, and a transmission component. The transmission component is in transmission connection with the movable shutter, so that when the movable shutter moves upward, the first installation frame is driven to rotate upward to a vertical state through the transmission component.

[0008] The further setting of the present invention is: the transmission component includes a rope winding wheel, a first traction rope, and a connecting block. The first installation frame is rotatably connected to the drainage groove through a rotating shaft, and the rotating shaft is fixedly connected to the first installation frame. The end of the rotating shaft penetrates 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 at the bottom of the side wall of the movable shutter. 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.

[0009] The further setting of the present invention is: a storage box is fixedly installed on one side of the drainage groove close to the movable shutter, 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.

[0010] The further setting of the present invention is: a baffle is fixedly installed on one side of the first installation frame close to the storage box. The baffle is perpendicular to the first installation frame. The top end of the baffle is fixedly connected with an elastic retaining net, and the top end of the elastic retaining net is fixedly connected with the top wall of the window opened on the side wall of the storage box.

[0011] The further setting of the present invention is: vertical plates are fixedly installed on both sides of the top end of the support plate, and both sides of the movable shutter are respectively slidably matched with the two vertical plates.

[0012] A further setting of the present invention is that: the driving component includes a transmission box fixedly installed at the top of the vertical plate, a second traction rope, a fixed pulley rotatably installed in the transmission box, and a counterweight plate. One end of the second traction rope is fixedly connected to the top wall of the movable shutter, and the other end of the second traction rope is fixedly connected to the counterweight plate after passing around the fixed pulley. A guide rail is fixedly installed on the side wall of the storage box away from the drainage groove, and the counterweight plate is slidably installed on the guide rail. A locking component is provided at the top of the storage box for locking the counterweight plate.

[0013] A further setting of the present invention is that: the locking component includes a support box, a sliding plate slidably installed inside the support box, and a one-way latch fixedly installed on the sliding plate. The support box is fixedly installed at the top of the storage box. A card slot is formed on one side of the counterweight plate close to the support box, and one side of the one-way latch extends into the card slot. A spring is arranged inside the support box, and the sliding plate is elastically connected to the inner side wall of the support box through the spring. A protective box is fixedly installed on the inner side wall of the drainage groove, and the side wall of the protective box away from the storage box is open. A floating plate is arranged inside the protective box, and the floating plate is of a hollow structure. The sliding plate is connected to the floating plate through a connecting rope.

[0014] A further setting of the present invention is that: the second filtering component includes a second installation frame, a sliding rod slidably installed inside the second installation frame, and a third traction rope. The second installation frame is fixedly installed inside the drainage groove and is located below the first installation frame. An installation box is fixedly installed on the side of the second installation frame away from the storage box. A roller is rotatably installed inside the installation box, and a second filter screen is wound around the roller. One end of the second filter screen extends out of the installation 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 penetrates through the side wall of the drainage groove and is fixedly connected to the bottom wall of the movable shutter.

[0015] A further setting of the present invention is that: a fixed shaft is fixedly installed inside the installation box, the roller is sleeved on the fixed shaft, a clockwork spring is arranged inside the roller, one end of the clockwork spring is fixedly connected to the outer peripheral wall of the fixed shaft, and the other end of the clockwork spring is fixedly connected to the inner peripheral wall of the roller.

[0016] A further setting of the present invention is that: a cover plate is fixedly arranged at the top of the drainage groove, and a drainage through groove is formed on the cover plate.

[0017] In summary, the present invention has the following beneficial effects: Through the arrangement of the switchable first filtering component and second filtering component, the present invention effectively solves the problem of reduced drainage capacity caused by debris blocking the filter screen at the initial stage of heavy rain. When the drainage efficiency is affected by debris accumulation in the first filtering component, the rising process of the movable shutter drives the first filter screen to rotate away from the filtering position, automatically switching to the unblocked second filtering component to continue working, ensuring the continuous smoothness of the drainage channel. This design makes full use of the lifting power of the movable shutter to achieve the switching of the filtering layer, without the need to add an independent driving device, with strong structural linkage and timely response, significantly improving the anti-blocking ability and drainage stability of the drainage system in extreme weather, and fundamentally avoiding the problem of water backflow caused by drainage failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a sectional structural schematic diagram of the present invention;

[0020] Figure 3 is a structural schematic diagram of the present invention after removing the drainage trough;

[0021] Figure 4 is a structural schematic diagram of the movable shutter, first filtering component and transmission component of the present invention;

[0022] Figure 5 is a structural schematic diagram of the storage box, locking component and driving component of the present invention;

[0023] Figure 6 is a sectional structural schematic diagram of the counterweight plate and locking component of the present invention;

[0024] Figure 7 is a structural schematic diagram of the second filtering component of the present invention;

[0025] Figure 8 is a sectional structural schematic diagram of the installation box of the present invention.

[0026] In the figure: 1, drainage trough; 101, window; 2, support plate; 3, cover plate; 4, vertical plate; 5, movable shutter; 6, first filter assembly; 61, first mounting frame; 62, first filter screen; 63, baffle; 64, rotating shaft; 65, rope winding wheel; 66, first traction rope; 67, connecting block; 7, second filter assembly; 71, second mounting frame; 72, mounting box; 73, sliding rod; 74, third traction rope; 75, fixed shaft; 76, spring; 77, roller; 78, second filter screen; 8, storage box; 9, counterweight plate; 901, card slot; 10, transmission box; 11, fixed pulley; 12, second traction rope; 13, guide rail; 14, locking assembly; 141, support box; 142, sliding plate; 143, one-way latch; 144, spring; 145, floating plate; 146, connecting rope; 15, protection box; 16, elastic barrier net. Detailed implementation manners

[0027] The following will further describe the present invention in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Please refer to Figures 1 to 6, in the embodiment of the present invention, an automatic water isolation device for building underground facilities includes a support plate 2, a drainage groove 1 fixedly arranged on one side of the support plate 2, a movable shutter 5, and a driving component for driving the movable shutter 5 to rise. The movable shutter 5 penetrates the support plate 2 and is slidably matched with the support plate 2. A cover plate 3 is fixedly arranged at the top of the drainage groove 1. A drainage through groove is formed on the cover plate 3, and the width of the drainage through groove is 2 cm - 5 cm. Larger-sized sundries can be intercepted through the drainage through groove. The bottom of the drainage groove 1 is communicated with a sewer or a drainage pipe. A first filtering component 6 and a second filtering component 7 are arranged at the bottom of the inner cavity of the drainage groove 1. The first filtering component 6 is located above the second filtering component 7. The first filtering component 6 includes a first mounting frame 61, a first filter screen 62 fixedly installed inside the first mounting frame 61, and a transmission component. The transmission component is in transmission connection with the movable shutter 5, so that when the movable shutter 5 moves upward, the first mounting frame 61 is driven to rotate upward to a vertical state through the transmission component. During daily use, the impurities entering the drainage groove 1 are filtered by the first filtering component 6. Therefore, there will be some sundries on the first filtering component 6, resulting in a reduction in drainage capacity. And at the beginning of a heavy rain, the sundries on the ground flow and gradually accumulate on the first filter screen 62 of the first filtering component 6 under the action of water flow, causing the drainage capacity of the first filtering component 6 to gradually decrease, so that the liquid level in the drainage groove 1 gradually rises. When the water in the drainage groove 1 is about to overflow, the driving component drives the movable shutter 5 to move upward, thereby playing a role in blocking water and preventing rainwater from entering the basement. At the same time, when the movable shutter 5 moves upward, the first mounting frame 61 is driven to rotate upward to a vertical state through the transmission component, so that the first filter screen 62 no longer filters the rainwater entering the drainage groove 1, and the second filtering component 7 starts to work. Since the second filtering component 7 has not been used, and most of the sundries on the ground enter the drainage groove 1 and accumulate on the surface of the first filtering component 6 at the beginning of the heavy rain, it is not easy for the subsequent second filtering component 7 to be blocked, thus ensuring the stable drainage of the subsequent drainage groove 1, improving the drainage capacity during heavy rain, effectively avoiding the backflow of rainwater into the basement due to insufficient drainage capacity of the drainage structure. And the rotation of the first filtering component 6 is driven by the power when the movable shutter 5 rises, without the need for other power driving structures, with good synchronism and fast response speed.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] See also Figures 2 to 6, in the embodiment of the present invention, vertical plates 4 are fixedly installed on both sides of the top end of the support plate 2. Both sides of the movable shutter 5 are slidably engaged with the two vertical plates 4 respectively, and a seal is maintained between the movable shutter 5 and the vertical plates 4. The vertical plates 4 are fixedly connected to and sealed with the two side walls of the basement entrance; the driving assembly includes a transmission box 10 fixedly installed at the top end of the vertical plate 4, a second towing rope 12, a fixed pulley 11 rotatably installed in the transmission box 10, and a counterweight plate 9. One end of the second towing rope 12 is fixedly connected to the top wall of the movable shutter 5. The other end of the second towing rope 12 is fixedly connected to the counterweight plate 9 after passing around the fixed pulley 11. A guide rail 13 is fixedly installed on the side wall of the storage box 8 away from the drainage groove 1. The counterweight plate 9 is slidably installed on the guide rail 13. A locking assembly 14 for locking the counterweight plate 9 is provided at the top end of the storage box 8; the locking assembly 14 includes a support box 141, a sliding plate 142 slidably installed inside the support box 141, and a one-way latch 143 fixedly installed on the sliding plate 142. The support box 141 is fixedly installed at the top end of the storage box 8. A card slot 901 is formed on the side of the counterweight plate 9 close to the support box 141. One side of the one-way latch 143 extends into the card slot 901. An inclined surface is provided at the bottom of the one-way latch 143. A spring 144 is arranged inside the support box 141. The sliding plate 142 is elastically connected to the inner side wall of the support box 141 through the spring 144. A protective box 15 is fixedly installed on the inner side wall of the drainage groove 1. The side wall of the protective box 15 away from the storage box 8 is open. A floating plate 145 is arranged inside the protective box 15. The floating plate 145 is of 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 rainwater from dripping on the floating plate 145. The sliding plate 142 and the floating plate 145 are connected by a connecting rope 146; the overall weight of the counterweight plate 9 is greater than that of the movable shutter 5. Preferably, 1. of the movable shutter 5.5 - 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. When the floating plate 145 floats upward, it can pull the sliding plate 142 away from the counterweight plate 9 through the connecting rope 146. When the sliding plate 142 moves, it drives the one-way latch 143 to move, causing the one-way latch 143 to move out of the card slot 901, thereby releasing the lock on the counterweight plate 9. Under the action of its own weight, the counterweight plate 9 moves downward. When the counterweight plate 9 moves downward, it pulls the movable shutter 5 upward through the second tow rope 12, thereby driving the movable shutter 5 to rise. By using the power of the movement of the floating plate 145 to release the lock on the counterweight plate 9, when the water level in the drainage trough 1 is relatively high, the counterweight plate 9 can automatically move downward to drive the movable shutter 5 to rise upward. There is no need to set up an electrical drive structure for driving, and there is no need for manual operation. It can automatically raise the movable shutter 5 in an emergency, with a fast response speed, and can promptly respond to an emergency flood season. After the flood situation ends, as the water level in the drainage trough 1 drops, the one-way latch 143 resets. At this time, pulling the movable shutter 5 upward can reset the counterweight plate 9, causing the one-way latch 143 to re-insert into the card slot 901 to lock the counterweight plate 9, and the reset is relatively convenient.

[0033] Please refer to Figure 2 、 Figure 7 and Figure 8, in the embodiment of the present invention, the second filtering component 7 includes a second mounting frame 71, a sliding rod 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 drainage trough 1 and 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 inside the mounting box 72. A second filter screen 78 is wound around the roller 77. One end of the second filter screen 78 extends out of the mounting box 72 and is fixedly connected to the sliding rod 73. One end of the third traction rope 74 is fixedly connected to the sliding rod 73. The other end of the third traction rope 74 penetrates through the side wall of the drainage trough 1 and is fixedly connected to the bottom wall of the movable shutter 5. Elastic sliding strips are provided on both sides of the second filter screen 78, and the elastic sliding strips can move into the limiting grooves formed on the inner side wall of the second mounting frame 71; a fixed shaft 75 is fixedly mounted inside the mounting box 72. The roller 77 is sleeved on the fixed shaft 75. A hairspring 76 is arranged inside the roller 77. One end of the hairspring 76 is fixedly connected to the outer peripheral wall of the fixed shaft 75, and the other end of the hairspring 76 is fixedly connected to the inner peripheral wall of the roller 77; when the movable shutter 5 moves upward, the movable shutter 5 pulls the sliding rod 73 to move towards the storage box 8 through the third traction rope 74. When the sliding rod 73 moves, the second filter screen 78 inside the mounting box 72 is pulled out, so that the second filter screen 78 fills the inside of the second mounting frame 71, thereby enabling the second filter screen 78 to play a filtering role. The setting of the hairspring 76 enables the roller 77 to rotate reversely and reset under the action of the hairspring 76 when the third traction rope 74 is slack, so that the second filter screen 78 is rewound onto the roller 77 again. In this embodiment, through the setting of the retractable second filter screen 78, when the first filter screen 62 is working, the second filter screen 78 is retracted inside the mounting box 72 for protection, preventing 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 ends, the sundries in the drainage trough 1 need to be cleaned, and multiple filter screens need to be cleaned.

[0034] The above are only the preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features, and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

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 comprises a first mounting frame, a first filter screen fixedly mounted inside the first mounting frame, and a transmission component, the transmission component is transmission-connected to the movable stop door, so that when the movable stop door moves upward, the transmission component drives the first mounting frame to rotate upward to a vertical state; 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.

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: 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.

9. The automatic water-isolating device for underground facilities in a building 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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