Liftable type third-class liquid warehouse cofferdam device

Abstract

This utility model discloses a liftable Class C liquid warehouse cofferdam device, aiming to solve the problem of existing reinforced concrete cofferdams being elevated above the ground, severely affecting the convenience of vehicle transportation within the warehouse. The utility model includes a cofferdam plate and an elastic waterproof membrane. An installation groove is provided on the warehouse floor, and the cofferdam plate is liftable and installable in the groove. The waterproof membrane is connected to both sides of the groove, covering the opening of the groove. When the cofferdam plate is raised above the ground, the waterproof membrane adheres to the upper outer wall of the cofferdam plate. When the cofferdam plate is lowered to be flush with the ground, the waterproof membrane is laid flat on the upper part of the cofferdam plate. This liftable Class C liquid warehouse cofferdam device, as disclosed in this patent application, not only meets the requirements for preventing material leakage but also facilitates vehicle passage during material transportation.

Description

Technical Field

[0001] This utility model relates to hazardous chemical storage technology, and more specifically, it relates to a liftable dike device for a Class C liquid warehouse. Background Technology

[0002] Warehouses, as indispensable building units in chemical industrial parks, play a crucial role in storing materials. Warehouses storing liquid materials, in particular, must not only meet the needs of material transportation but also the requirements for leak prevention. For large Class C liquid warehouses, the conventional approach is to divide them into multiple zones, with each zone separated by a dike to ensure the above requirements are met. However, this approach has a problem: the dikes significantly hinder the convenience of vehicle transport within the warehouse. For example, Chinese Patent Application No. 201810349178 5 discloses a standard practice for the ground surface of a temporary hazardous waste storage warehouse. Considering the special requirements of hazardous waste storage for the ground surface, it uses a horizontal seepage prevention system, drainage ditches around the storage area, and reinforced concrete dikes to ensure that hazardous waste will not affect the soil, water sources, and surrounding environment of the storage area. However, the reinforced concrete dikes are elevated above ground level, severely impacting the convenience of vehicle transport within the warehouse. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a liftable Class C liquid warehouse containment device. It is designed to lift and lower, which not only meets the requirements for preventing material leakage, but also facilitates the passage of vehicles during material transportation.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a liftable Class C liquid warehouse cofferdam device, including a cofferdam plate and an elastic waterproof membrane. An installation groove is set on the warehouse ground, and the cofferdam plate can be lifted and installed in the installation groove. The two ends of the waterproof membrane are respectively connected to the two sides of the installation groove, and the waterproof membrane covers the opening of the installation groove. The cofferdam plate is raised above the ground so that the waterproof membrane adheres to the upper outer wall of the cofferdam plate. The cofferdam plate is lowered to be flush with the ground, and the waterproof membrane is laid flat on the upper part of the cofferdam plate.

[0005] The cofferdam device operates in two states. In the raised state, the cofferdam panels lift the waterproof membrane upwards, allowing the elastic membrane to adhere to the upper outer wall of the cofferdam panels, achieving waterproofing and seepage prevention. In the retracted state, the cofferdam panels lower to ground level, and the elastic waterproof membrane retracts, laying flat on the upper part of the cofferdam panels to facilitate the passage of material transport vehicles.

[0006] The lifting and lowering mechanism of this patent application for a Class C liquid warehouse containment device not only meets the requirements for preventing material leakage, but also facilitates vehicle passage during material transportation.

[0007] Preferably, both ends of the waterproof membrane are connected to coil springs, which provide elastic force to the waterproof membrane.

[0008] The waterproof membrane is connected to coil springs at both ends, providing reliable elasticity and facilitating its unfolding and recycling.

[0009] As a preferred option, both sides of the opening of the installation groove on the warehouse floor are pre-embedded with roll material storage grooves, and the two ends of the waterproof roll material are respectively installed in the two roll material storage grooves.

[0010] Pre-embedded storage grooves for waterproof membrane in the ground facilitate the installation of the membrane and provide ample installation space, thus providing excellent protection for the membrane.

[0011] Preferably, a sealing strip is provided on the top surface of the opening end of the roll material storage groove, and the sealing strip is positioned close to the cofferdam plate.

[0012] The sealing strips provide a seal for the waterproof membrane, improving the waterproofing effect of the device. They also prevent debris from being brought into the membrane storage and installation slots, thus avoiding malfunctions caused by debris entering the membrane.

[0013] Preferably, the end of the roll material storage groove extends into the installation groove to form a limiting head, a limiting block is set on the cofferdam plate, and a support block is installed on the side wall of the installation groove. The limiting head and the support block limit the lifting distance of the limiting block.

[0014] During the raising of the cofferdam panel, the limiting head at the end of the roll material storage groove acts as a limiter on the limiting block set on the cofferdam panel, preventing the cofferdam panel from detaching from the installation groove. When the cofferdam panel is lowered to a position flush with the ground, the limiting block on the cofferdam panel is supported by the support block. At this time, the support block provides good support for the cofferdam panel, ensuring that vehicles can pass smoothly over the upper part of the cofferdam panel.

[0015] Preferably, a sealing brush is installed on the upper edge of the opening end of the roll material storage groove, and the sealing brush is pressed against the outer surface of the waterproof roll material.

[0016] The sealing brush can block debris and prevent it from entering the roll material storage groove. In addition, the sealing brush can be placed against the outer surface of the waterproof roll material to clean the outer surface of the waterproof roll material.

[0017] Preferably, the cofferdam plate has an inverted U-shaped structure, and the depth of the installation groove is not less than the height of the cofferdam plate.

[0018] The inverted T-shaped cofferdam panel has good structural strength, is lightweight, and is easy to lift and lower. The depth of the installation groove is not less than the height of the cofferdam panel to ensure that the cofferdam panel can be completely stored in the installation groove.

[0019] Preferably, a magnetic layer is provided on the inner surface of the waterproof membrane, and the magnetic layer is attracted to the cofferdam plate.

[0020] The waterproof membrane is positioned by magnetic attraction with the cofferdam plate, ensuring reliable adhesion between the two.

[0021] Preferably, a lifting piston cylinder is installed in the mounting slot, and a buffer spring is connected between the extension rod of the lifting piston cylinder and the cofferdam plate.

[0022] The lifting piston cylinder's telescopic rod extends and retracts to drive the raising and lowering of the cofferdam plate, ensuring smooth and reliable movement. A buffer spring connects the lifting piston cylinder's telescopic rod and the cofferdam plate. After the cofferdam plate rises to its designated position, the buffer spring provides cushioning. If the lifting piston cylinder malfunctions and cannot drive the cofferdam plate to descend, the cofferdam plate can still be pressed downwards to ensure that vehicles can temporarily pass over it.

[0023] Another option is to install a drive motor at the bottom of the mounting slot, connect the output shaft of the drive motor to a screw rod, and fasten a threaded sleeve to the cofferdam plate. The threaded sleeve is threadedly connected to the screw rod, and the rotation of the screw rod drives the threaded sleeve to move up and down.

[0024] The drive motor drives the screw to rotate, which in turn drives the screw sleeve to move up and down, thus realizing the raising and lowering of the cofferdam plate.

[0025] Compared with the prior art, the beneficial effects of this utility model are: (1) The lifting and lowering device of this patent application for Class C liquid warehouse can not only meet the requirements of material leakage prevention, but also facilitate the passage of vehicles during material transportation; (2) The pre-embedded roll material storage groove on the ground facilitates the installation of the anti-seepage roll material, and the roll material storage groove provides sufficient installation space for the anti-seepage roll material, which plays a good protective role for the anti-seepage roll material; (3) The sealing protrusion strip on the roll material storage groove plays a sealing role for the anti-seepage roll material, which improves the anti-seepage effect of this device, and at the same time prevents debris from being brought into the roll material storage groove and installation groove, avoiding malfunctions caused by debris entering; (4) The sealing brush on the roll material storage groove can block debris and prevent debris from entering the roll material storage groove, and the sealing brush can clean the outer surface of the anti-seepage roll material by pressing against it. Attached Figure Description

[0026] Figure 1 This is a diagram showing the raised state of the cofferdam plate in Embodiment 1 of this utility model.

[0027] Figure 2 This is a diagram showing the storage state of the cofferdam plate in Embodiment 1 of this utility model.

[0028] Figure 3 These are structural diagrams of the roll material storage grooves in embodiments 1 and 3 of this utility model.

[0029] Figure 4 These are structural diagrams of the roll material storage grooves in embodiments 2 and 4 of this utility model.

[0030] Figure 5 These are connection diagrams of the cofferdam plates in embodiments 3 and 4 of this utility model.

[0031] Figure 6 These are diagrams showing the storage state of the cofferdam panels in embodiments 3 and 4 of this utility model.

[0032] In the diagram: 1. Cofferdam plate, 2. Impermeable membrane roll, 3. Installation groove, 4. Coil spring, 5. Membrane storage groove, 6. Limiting head, 7. Limiting block, 8. Support block, 9. Sealing protrusion, 10. Sealing brush, 11. Brush bristles, 12. Mounting seat, 13. Lifting piston cylinder, 14. Buffer spring, 15. Spring seat, 16. Drive motor, 17. Screw, 18. Base plate, 19. Guide post, 20. Guide sleeve, 21. Bracket, 22. Rotary seat, 23. Screw sleeve. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0034] Example 1: A liftable dike device for a Class C liquid warehouse (see...) Figure 1 , Figure 2 , Figure 3 The system includes a cofferdam panel 1 and an elastic waterproof membrane 2. An installation groove 3 is set on the warehouse floor, vertically positioned, allowing the cofferdam panel 1 to be raised and lowered within it. The cofferdam panel 1 has an inverted U-shaped structure, with a flat upper end. The depth of the installation groove 3 is not less than the height of the cofferdam panel 1. In this embodiment, a 300mm wide and 1000mm deep reinforced concrete installation groove 3 is pre-reserved on the ground where the cofferdam panel 1 needs to be installed.

[0035] The two ends of the waterproof membrane 2 are respectively connected to both sides of the installation groove 3, and the waterproof membrane 2 covers the opening of the installation groove 3; both ends of the waterproof membrane 2 are connected to coil springs 4, which provide elastic force to the waterproof membrane 2. The cofferdam 1 is raised above the ground so that the waterproof membrane 2 is attached to the upper outer wall of the cofferdam 1; the cofferdam 1 is lowered to be flush with the ground, and the waterproof membrane 2 is laid flat on the upper end of the cofferdam 1.

[0036] On the warehouse floor, groove 3 is installed with pre-embedded roll material storage grooves 5 on both sides of the opening end. The upper surface of the roll material storage groove 5 is flush with the ground. The two ends of the waterproof roll material 2 are respectively installed in the two roll material storage grooves 5. A roller is installed in the roll material storage groove 5, and the coil spring 4 and the waterproof roll material 2 are both wound and connected to the roller.

[0037] The end of the roll material storage groove 5 extends into the mounting groove 3 to form a limiting head 6. Two opposing limiting blocks 7 are set on the cofferdam plate 1, and two opposing support blocks 8 are installed on the side wall of the mounting groove 3. The limiting head 6 and the support blocks 8 limit the lifting distance of the limiting blocks 7. The open ends of the two roll material storage grooves 5 are set opposite each other, and the lower edge of the open end of the roll material storage groove 5 is folded upward to form a flange, and the flange position serves as the limiting head 6. During the lifting process of the cofferdam plate 1, the limiting head 6 at the end of the roll material storage groove 5 plays a limiting role on the limiting blocks 7 set on the cofferdam plate 1, preventing the cofferdam plate 1 from falling off the mounting groove 3. When the cofferdam plate 1 is lowered to a position flush with the ground, the limiting blocks 7 set on the cofferdam plate 1 are supported on the support blocks 8. At this time, the support blocks 8 provide good support for the cofferdam plate 1, ensuring that vehicles can pass smoothly over the upper end of the cofferdam plate 1.

[0038] A sealing strip 9 is provided on the top surface of the opening end of the roll material storage groove 5. The outer surface of the waterproof roll material 2 abuts against the sealing strip 9, which is located close to the cofferdam plate 1. The sealing strip 9 provides a sealing effect for the waterproof roll material 2, improving the waterproof effect of the device and preventing debris from being brought into the roll material storage groove 5 and the installation groove 3, thus avoiding malfunctions caused by debris entering.

[0039] A lifting piston cylinder 13 is installed in the mounting slot 3. The lifting piston cylinder 13 is an electric cylinder driven by current. A buffer spring 14 connects the extension rod of the lifting piston cylinder 13 to the cofferdam plate 1. A spring seat 15 is connected to the end of the extension rod of the lifting piston cylinder 13, and the buffer spring 14 is connected between the spring seat 15 and the top surface of the cofferdam plate 1. Lifting piston cylinders 13 are installed at both ends of the cofferdam plate 1, and the two lifting piston cylinders 13 synchronously drive the cofferdam plate 1 to rise and fall smoothly and reliably. The lifting piston cylinder 13 is electrically connected to a controller, which is electrically connected to sensors. Sensors are installed within a 1-meter range on both sides of the cofferdam plate 1 at the warehouse entrance. When a vehicle passes by, it is detected by the sensors, which transmit a signal to the controller, thereby controlling the lifting piston cylinder 13 to work and drive the cofferdam plate 1 to a position flush with the ground, facilitating vehicle passage.

[0040] The cofferdam device operates in two states. In the raised state, the cofferdam panel 1 is lifted. The lifting piston cylinder 13 drives the cofferdam panel 1 to rise 300mm. The raised cofferdam panel 1 pushes the waterproof membrane 2 upwards, allowing the elastic waterproof membrane 2 to adhere to the upper outer wall of the cofferdam panel 1, achieving the required waterproofing and seepage prevention. In the retracted state, the cofferdam panel 1 is lowered to ground level. The elastic waterproof membrane 2 retracts, laying flat on top of the cofferdam panel 1, facilitating the passage of material transport vehicles.

[0041] Example 2: A liftable dike device for a Class C liquid warehouse (see...) Figure 4The system includes a cofferdam panel 1 and an elastic waterproof membrane 2. An installation groove 3 is set on the warehouse floor, vertically positioned, allowing the cofferdam panel 1 to be raised and lowered within it. The cofferdam panel 1 has an inverted U-shaped structure, with a flat upper end. The depth of the installation groove 3 is not less than the height of the cofferdam panel 1. In this embodiment, a 300mm wide and 1000mm deep reinforced concrete installation groove 3 is pre-reserved on the ground where the cofferdam panel 1 needs to be installed.

[0042] The two ends of the waterproof membrane 2 are respectively connected to both sides of the installation groove 3, and the waterproof membrane 2 covers the opening of the installation groove 3; both ends of the waterproof membrane 2 are connected to coil springs 4, which provide elastic force to the waterproof membrane 2. The cofferdam 1 is raised above the ground so that the waterproof membrane 2 is attached to the upper outer wall of the cofferdam 1; the cofferdam 1 is lowered to be flush with the ground, and the waterproof membrane 2 is laid flat on the upper end of the cofferdam 1.

[0043] On the warehouse floor, groove 3 is installed with pre-embedded roll material storage grooves 5 on both sides of the opening end. The upper surface of the roll material storage groove 5 is flush with the ground. The two ends of the waterproof roll material 2 are respectively installed in the two roll material storage grooves 5. A roller is installed in the roll material storage groove 5, and the coil spring 4 and the waterproof roll material 2 are both wound and connected to the roller.

[0044] The end of the roll material storage groove 5 extends into the mounting groove 3 to form a limiting head 6. Two opposing limiting blocks 7 are set on the cofferdam plate 1, and two opposing support blocks 8 are installed on the side wall of the mounting groove 3. The limiting head 6 and the support blocks 8 limit the lifting distance of the limiting blocks 7. The open ends of the two roll material storage grooves 5 are set opposite each other, and the lower edge of the open end of the roll material storage groove 5 is folded upward to form a flange, and the flange position serves as the limiting head 6. During the lifting process of the cofferdam plate 1, the limiting head 6 at the end of the roll material storage groove 5 plays a limiting role on the limiting blocks 7 set on the cofferdam plate 1, preventing the cofferdam plate 1 from falling off the mounting groove 3. When the cofferdam plate 1 is lowered to a position flush with the ground, the limiting blocks 7 set on the cofferdam plate 1 are supported on the support blocks 8. At this time, the support blocks 8 provide good support for the cofferdam plate 1, ensuring that vehicles can pass smoothly over the upper end of the cofferdam plate 1.

[0045] A sealing strip 9 is provided on the top surface of the opening end of the roll material storage groove 5. The outer surface of the waterproof roll material 2 abuts against the sealing strip 9, which is located close to the cofferdam plate 1. The sealing strip 9 provides a sealing effect for the waterproof roll material 2, improving the waterproof effect of the device and preventing debris from being brought into the roll material storage groove 5 and the installation groove 3, thus avoiding malfunctions caused by debris entering.

[0046] A sealing brush 10 is installed on the upper edge of the opening end of the roll material storage groove 5, and the sealing brush 10 is pressed against the outer surface of the waterproof roll material 2. The sealing brush 10 includes bristles 11 and a mounting base 12. The mounting base 12 is securely connected to the bristles 11 installed on the upper edge of the opening end of the roll material storage groove 5, and a sealing protrusion 9 is provided on the mounting base 12. The sealing brush 10 can block debris and prevent it from entering the roll material storage groove 5, and the sealing brush 10, pressed against the outer surface of the waterproof roll material 2, can clean the outer surface of the waterproof roll material 2.

[0047] A magnetic layer is provided on the inner surface of the seepage-proof membrane 2, and the magnetic layer is attracted to the cofferdam plate 1. The seepage-proof membrane 2 is positioned by the magnetic layer and the cofferdam plate 1, ensuring the reliability of the adhesion between the two.

[0048] A lifting piston cylinder 13 is installed in the mounting slot 3. The lifting piston cylinder 13 is an electric cylinder driven by current. A buffer spring 14 connects the extension rod of the lifting piston cylinder 13 to the cofferdam plate 1. A spring seat 15 is connected to the end of the extension rod of the lifting piston cylinder 13, and the buffer spring 14 is connected between the spring seat 15 and the top surface of the cofferdam plate 1. Lifting piston cylinders 13 are installed at both ends of the cofferdam plate 1, and the two lifting piston cylinders 13 synchronously drive the cofferdam plate 1 to rise and fall smoothly and reliably. The lifting piston cylinder 13 is electrically connected to a controller, which is electrically connected to sensors. Sensors are installed within a 1-meter range on both sides of the cofferdam plate 1 at the warehouse entrance. When a vehicle passes by, it is detected by the sensors, which transmit a signal to the controller, thereby controlling the lifting piston cylinder 13 to work and drive the cofferdam plate 1 to a position flush with the ground, facilitating vehicle passage.

[0049] The cofferdam device operates in two states. In the raised state, the cofferdam panel 1 is lifted. The lifting piston cylinder 13 drives the cofferdam panel 1 to rise 300mm. The raised cofferdam panel 1 pushes the waterproof membrane 2 upwards, allowing the elastic waterproof membrane 2 to adhere to the upper outer wall of the cofferdam panel 1, achieving the required waterproofing and seepage prevention. In the retracted state, the cofferdam panel 1 is lowered to ground level. The elastic waterproof membrane 2 retracts, laying flat on top of the cofferdam panel 1, facilitating the passage of material transport vehicles.

[0050] Example 3: A liftable dike device for a Class C liquid warehouse (see...) Figure 3 , Figure 5 , Figure 6 The system includes a cofferdam panel 1 and an elastic waterproof membrane 2. An installation groove 3 is set on the warehouse floor, vertically positioned, allowing the cofferdam panel 1 to be raised and lowered within it. The cofferdam panel 1 has an inverted U-shaped structure, with a flat upper end. The depth of the installation groove 3 is not less than the height of the cofferdam panel 1. In this embodiment, a 300mm wide and 1000mm deep reinforced concrete installation groove 3 is pre-reserved on the ground where the cofferdam panel 1 needs to be installed.

[0051] The two ends of the waterproof membrane 2 are respectively connected to both sides of the installation groove 3, and the waterproof membrane 2 covers the opening of the installation groove 3; both ends of the waterproof membrane 2 are connected to coil springs 4, which provide elastic force to the waterproof membrane 2. The cofferdam 1 is raised above the ground so that the waterproof membrane 2 is attached to the upper outer wall of the cofferdam 1; the cofferdam 1 is lowered to be flush with the ground, and the waterproof membrane 2 is laid flat on the upper end of the cofferdam 1.

[0052] On the warehouse floor, groove 3 is installed with pre-embedded roll material storage grooves 5 on both sides of the opening end. The upper surface of the roll material storage groove 5 is flush with the ground. The two ends of the waterproof roll material 2 are respectively installed in the two roll material storage grooves 5. A roller is installed in the roll material storage groove 5, and the coil spring 4 and the waterproof roll material 2 are both wound and connected to the roller.

[0053] The end of the roll material storage groove 5 extends into the mounting groove 3 to form a limiting head 6. Two opposing limiting blocks 7 are set on the cofferdam plate 1, and two opposing support blocks 8 are installed on the side wall of the mounting groove 3. The limiting head 6 and the support blocks 8 limit the lifting distance of the limiting blocks 7. The open ends of the two roll material storage grooves 5 are set opposite each other, and the lower edge of the open end of the roll material storage groove 5 is folded upward to form a flange, and the flange position serves as the limiting head 6. During the lifting process of the cofferdam plate 1, the limiting head 6 at the end of the roll material storage groove 5 plays a limiting role on the limiting blocks 7 set on the cofferdam plate 1, preventing the cofferdam plate 1 from falling off the mounting groove 3. When the cofferdam plate 1 is lowered to a position flush with the ground, the limiting blocks 7 set on the cofferdam plate 1 are supported on the support blocks 8. At this time, the support blocks 8 provide good support for the cofferdam plate 1, ensuring that vehicles can pass smoothly over the upper end of the cofferdam plate 1.

[0054] A sealing strip 9 is provided on the top surface of the opening end of the roll material storage groove 5. The outer surface of the waterproof roll material 2 abuts against the sealing strip 9, which is located close to the cofferdam plate 1. The sealing strip 9 provides a sealing effect for the waterproof roll material 2, improving the waterproof effect of the device and preventing debris from being brought into the roll material storage groove 5 and the installation groove 3, thus avoiding malfunctions caused by debris entering.

[0055] A magnetic layer is provided on the inner surface of the seepage-proof membrane 2, and the magnetic layer is attracted to the cofferdam plate 1. The seepage-proof membrane 2 is positioned by the magnetic layer and the cofferdam plate 1, ensuring the reliability of the adhesion between the two.

[0056] A drive motor 16 is installed at the bottom of the mounting slot 3. The output shaft of the drive motor 16 is connected to a screw 17. A threaded sleeve 23 is fastened to the cofferdam plate 1. The threaded sleeve 23 is threadedly connected to the screw 17. The rotation of the screw 17 drives the threaded sleeve 23 to move up and down. A base plate 18 is installed at the bottom of the mounting slot 3. The drive motor 16 is mounted on the base plate 18. Two guide posts 19 are set on the base plate 18, near the two ends of the cofferdam plate 1. Guide sleeves 20 are movably fitted on the guide posts 19 and are fastened to the cofferdam plate 1. A bracket 21 is installed on the base plate 18, and a rotating seat 22 is set on the upper part. The upper part of the screw 17 is rotatably mounted on the rotating seat 22. The drive motor 16 drives the screw 17 to rotate, thereby driving the threaded sleeve 23 to move up and down, realizing the raising and lowering movement of the cofferdam plate 1.

[0057] The drive motor 16 is electrically connected to the controller, and the controller is electrically connected to the sensors. Sensors are installed within 1 meter on both sides of the warehouse entrance cofferdam 1. When a vehicle passes by, it is detected by the sensor, which transmits the signal to the controller, thereby controlling the drive motor 16 to work and drive the cofferdam 1 to descend to a position flush with the ground to facilitate vehicle passage.

[0058] The cofferdam device operates in two states. In the raised state, the drive motor 16 raises the cofferdam plate 1 to 300mm, lifting the waterproof membrane 2 upwards so that the elastic membrane adheres to the upper outer wall of the cofferdam plate 1, achieving waterproofing and seepage prevention. In the retracted state, the cofferdam plate 1 lowers to ground level, and the elastic waterproof membrane 2 retracts, laying flat on top of the cofferdam plate 1 to facilitate the passage of material transport vehicles.

[0059] Example 4: A liftable dike device for a Class C liquid warehouse (see...) Figure 4 , Figure 5 Its structure is similar to that of Embodiment 3, with the main difference being that a sealing brush 10 is installed on the upper edge of the opening end of the roll material storage groove 5 in this embodiment, and the sealing brush 10 is pressed against the outer surface of the waterproof roll material 2. The sealing brush 10 includes bristles 11 and a mounting base 12. The mounting base 12 is securely connected to the upper edge of the opening end of the roll material storage groove 5, and a sealing protrusion 9 is provided on the mounting base 12. The sealing brush 10 can block debris, preventing it from entering the roll material storage groove 5, and the sealing brush 10, pressed against the outer surface of the waterproof roll material 2, can clean the outer surface of the waterproof roll material 2. Other structures are the same as in Embodiment 3.

[0060] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A liftable Class III liquid storage cofferdam device, characterized by, The system includes a cofferdam panel and an elastic waterproof membrane. An installation groove is set on the warehouse floor. The cofferdam panel can be raised and lowered to be installed in the installation groove. The two ends of the waterproof membrane are connected to the two sides of the installation groove, and the waterproof membrane covers the opening of the installation groove. The cofferdam panel is raised above the ground so that the waterproof membrane is attached to the upper outer wall of the cofferdam panel. The cofferdam panel is lowered to be flush with the ground, and the waterproof membrane is laid flat on the upper part of the cofferdam panel.

2. The liftable Class C liquid warehouse containment dike device according to claim 1, characterized in that, Both ends of the waterproof membrane are connected to coil springs, which provide elastic force to the waterproof membrane.

3. The liftable Class C liquid warehouse containment dike device according to claim 1, characterized in that, Both sides of the groove opening on the warehouse floor are pre-embedded with roll material storage grooves, and the two ends of the waterproof roll material are respectively installed in the two roll material storage grooves.

4. The liftable Class C liquid warehouse containment dike device according to claim 3, characterized in that, A sealing strip is provided on the top surface of the opening end of the roll material storage groove, and the sealing strip is positioned close to the cofferdam plate.

5. A liftable Class C liquid warehouse containment dike device according to claim 3, characterized in that, The end of the roll material storage groove extends into the installation groove to form a limiting head. A limiting block is set on the cofferdam plate, and a support block is installed on the side wall of the installation groove. The limiting head and the support block limit the lifting distance of the limiting block.

6. A liftable Class C liquid warehouse containment dike device according to claim 3, characterized in that, A sealing brush is installed on the upper edge of the opening end of the roll material storage groove, and the sealing brush is pressed against the outer surface of the waterproof roll material.

7. A liftable Class C liquid warehouse containment dike device according to claim 1, characterized in that, The cofferdam plate has an inverted U-shaped structure, and the depth of the installation groove is not less than the height of the cofferdam plate.

8. A liftable Class C liquid warehouse containment dike device according to claim 1, characterized in that, A magnetic layer is installed on the inner surface of the waterproof membrane, and the magnetic layer is attracted to the cofferdam plate.

9. A liftable Class C liquid warehouse containment dike device according to any one of claims 1 to 8, characterized in that, A lifting piston cylinder is installed in the mounting slot, and a buffer spring is connected between the extension rod of the lifting piston cylinder and the cofferdam plate.

10. A liftable Class C liquid warehouse containment dike device according to any one of claims 1 to 8, characterized in that, A drive motor is installed at the bottom of the mounting slot. The output shaft of the drive motor is connected to a screw rod. A threaded sleeve is fastened to the cofferdam plate. The threaded sleeve is threadedly connected to the screw rod. The rotation of the screw rod drives the threaded sleeve to move up and down.

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