Detachable steel cofferdam for overhauling water treatment underwater equipment

Abstract

The invention relates to the technical field of municipal water treatment, in particular to a detachable steel cofferdam for water treatment underwater equipment overhaul, which comprises a wall body and a bottom plate, the bottom plate is arranged below the wall body, and two groups of symmetrically distributed threaded holes are formed in one side of the wall body; guide rods which are uniformly distributed are arranged at the top of the bottom plate, and the lower ends of the guide rods penetrate through the bottom plate and are rotationally connected with the inner wall of the bottom plate; through the arrangement of the pile casing structure, the standard knots are guided through the guide rods, the effect of quickly installing the standard knots can be achieved, the multiple standard knots can be connected to be matched with the wall and the bottom plate to form the pile casing, water pumping is facilitated, a water-free environment is formed for overhauling, and the sectional standard knots are small in overall weight and convenient to use. The problem that a traditional cofferdam is large in overall weight and inconvenient to hoist is solved, the cofferdam can be suitable for different pool depths, the application range of the cofferdam is widened, the turnover frequency is increased, and therefore the purpose of saving cost is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of municipal water treatment, and in particular to a detachable steel cofferdam used for repairing underwater water treatment equipment. Background Art

[0002] In municipal water treatment plants, there are many underwater equipment such as water pumps and gates that need regular maintenance. Some water plants that have been in operation for many years cannot be closed for maintenance due to aging gates, and the water level in the forebay of the water pumps is always high. Under such conditions, the water pumps cannot be repaired or replaced, and a waterless environment must be created around the water pumps to repair or replace the water pumps.

[0003] At present, there are several measures to create a waterless environment around water pumps: 1. Suspend the operation of the water plant, lower the water level, and resume operation after maintenance; 2. Take temporary reverse discharge measures to create a waterless environment around the water pump; 3. Use a one-time cofferdam to create a waterless environment around the water pump;

[0004] The first option of suspending operations is not very applicable. The suspension of operations of most water treatment plants will cause overflow of sewage interception mains, polluting the environment and even causing environmental accidents. The second option of reverse discharge is only applicable to small water plants. The reverse discharge of large-scale water plants requires large-power and large-volume pumps, and many water treatment plants cannot achieve reverse discharge due to the shape of the pool. The third option uses a one-time steel cofferdam, which is difficult to hoist and construct, cannot be used in a cyclical manner, and is very likely to cause damage to the steel structure, with a low success rate.

[0005] After searching, a Chinese patent disclosed a detachable assembled steel sheet pile cofferdam steel enclosure device (publication number: CN213204177U). This patent can effectively reduce the welding, installation and disassembly time, and the disassembled steel enclosure can be recycled, but the overall structure of the device is large and inconvenient to hoist;

[0006] Steel cofferdam compartment and method for lowering the steel cofferdam compartment (CN110158623B), which changes the center of gravity of the steel cofferdam to facilitate hoisting, but has the problem that the overall structure of the steel cofferdam cannot be placed in sections, making hoisting difficult;

[0007] In summary, it can be seen that when the gates of large water treatment plants are damaged, the maintenance and replacement of water pumps is inconvenient and costly;

[0008] Therefore, a detachable steel cofferdam for maintenance of underwater water treatment equipment is proposed to solve the above problems. Summary of the invention

[0009] The purpose of the present invention is to provide a detachable steel cofferdam for the maintenance of underwater water treatment equipment in order to solve the above-mentioned problems, so as to improve the problem of poor convenience and high cost in the maintenance and replacement of water pumps when the gates of large water treatment plants are damaged.

[0010] The present invention achieves the above-mentioned purpose through the following technical scheme: a detachable steel cofferdam for the maintenance of underwater water treatment equipment, comprising: a wall body and a bottom plate, wherein the bottom plate is arranged below the wall body, one side of the wall body is provided with two groups of threaded holes symmetrically distributed, the top of the bottom plate is provided with evenly distributed guide rods, the lower ends of the guide rods penetrate the bottom plate and are rotatably connected to the inner wall of the bottom plate, and the surface of the guide rods is provided with guide grooves; a casing structure, wherein the casing structure is arranged at the top of the bottom plate; wherein the casing structure comprises a plurality of standard sections arranged above the bottom plate, the cross-sectional shape of the standard section is U-shaped, the top and bottom of the standard section are fixedly connected with a first sealing plate, a groove is provided on the side of the first sealing plate away from the standard section, the inner side of the standard section is fixedly connected with evenly distributed reinforcing ribs, and the surfaces of the standard section and the first sealing plate are provided with reinforcing ribs connected to the guide The guide hole that matches the rod, the surface of the standard section is provided with a support assembly; the casing structure also includes a sealing assembly arranged on the surface of the standard section, and the sealing assembly is used to improve the connection sealing between two adjacent standard sections and between the standard section and the wall; installation and disassembly structure; wherein, the installation and disassembly structure includes a plurality of mounting rings rotatably connected to the top of the standard section, the surface of the mounting ring is fixedly connected with two mounting blocks that are symmetrically distributed, the inner side of the mounting ring is fixedly connected with a guide block that matches the guide groove, the mounting ring is coaxially arranged with the adjacent guide hole, and the surface of the mounting block is provided with a guide hole; the installation and disassembly structure also includes two mounting plates arranged above the casing structure, the top of the mounting plate is fixedly connected with two connecting rings, the surface of the connecting ring is provided with a connecting rope, and the bottom of the mounting plate is provided with two docking structures that are symmetrically distributed.

[0011] Preferably, the docking structure includes a docking ring fixedly connected to the bottom of the mounting plate, a mounting cavity matching the mounting ring is provided at the bottom of the docking ring, two through grooves matching the two mounting blocks are provided on the inner wall of the mounting cavity, a limiting groove connected to the through groove is provided in the middle of the inner wall of the mounting cavity, a guide rod is fixedly connected to the middle of the inner wall of the limiting groove, the diameter of the guide rod is equal to the aperture of the guide hole, two sliding cavities are provided inside the docking ring, and a limiting assembly is provided on the inner wall of the sliding cavity.

[0012] Preferably, the limit assembly includes a slider slidably connected to the inner wall of the sliding cavity, and a side of the slider close to the guide rod is provided with evenly distributed storage grooves, and a rotating shaft is arranged inside the storage groove, and both ends of the rotating shaft pass through the storage groove and are rotatably connected to the inner wall of the slider, and a spring is fixedly connected to the upper end surface of the rotating shaft, and the other end of the spring is fixedly connected to the inner wall of the slider, and a stop block is fixedly connected to the surface of the rotating shaft, one end of the stop block extends to the inside of the limit groove, and a wedge surface is provided on one side of the stop block.

[0013] Preferably, the side of the sliding block away from the guide rod is rotatably connected to a second screw rod, the other end of the second screw rod passes through a docking ring and is fixedly connected to a knob, and the second screw rod is threadedly connected to the inner wall of the docking ring.

[0014] Preferably, two symmetrically distributed liquid storage chambers are provided inside the docking ring, the liquid storage chambers are filled with hydraulic oil, the inner wall of the liquid storage chamber is slidably connected to an extrusion block, the surface of the extrusion block is fixedly connected to a sliding rod, and the other end of the sliding rod passes through a limiting groove and is fixedly connected to a trigger block.

[0015] Preferably, two symmetrically distributed adjusting cavities are provided inside the docking ring, a pressure block is slidably connected to the inner wall of the limiting groove, one end of the pressure block passes through the adjusting cavity and extends to the inside of the limiting groove, the other end of the pressure block is fixedly connected to the inner wall of the adjusting cavity with evenly distributed springs, and evenly distributed conduits are arranged inside the docking ring, one end of the conduit is connected to the adjacent liquid storage cavity, and the other end of the conduit is connected to the adjacent adjusting cavity.

[0016] Preferably, the support assembly includes several groups of mounting frames arranged on one side of the wall, the number of mounting frames in each group is two and they are symmetrically distributed, one side of the mounting frame is fixedly connected to the inner side of the standard section, the side of the mounting frame close to the wall is fixedly connected to a second sealing plate, and a first screw is provided on the surface of the mounting frame, one end of the first screw passes through the mounting frame and the second sealing plate in sequence and is threadedly connected to the adjacent threaded hole.

[0017] Preferably, the support assembly further comprises a support frame arranged on the inner side of the standard section, two mounting seats are fixedly connected to the inner side of the standard section, and the support frame is located between the two mounting seats.

[0018] Preferably, the sealing assembly comprises two mounting shells respectively fixedly connected to the two ends of the standard section, a sealing member is fixedly connected inside the mounting shell, the cross-sectional shape of the sealing member is P-shaped, and one end of the sealing member passes through the mounting shell.

[0019] Preferably, the sealing assembly further comprises a sealing strip arranged inside the groove below, a cavity is opened inside the sealing strip, and the bottom of the sealing strip passes through the groove.

[0020] The beneficial effects of the present invention are:

[0021] 1. The setting of the casing structure can achieve the effect of fast installation of standard sections through the guidance of the guide rod to the standard section. The connection between multiple standard sections can form casings between the wall and the bottom plate to facilitate pumping to form a waterless environment for maintenance. The overall weight of the segmented standard section is small, which reduces the problem of the overall weight of the traditional cofferdam being large and inconvenient for lifting. It can be applied to different pool depths, expands the scope of application of the cofferdam, and increases the turnover rate, thereby achieving the purpose of cost saving;

[0022] 2. During use, the overall strength of the standard parts is enhanced by the support assembly to prevent the pressure of external water from affecting the use of the standard section. At the same time, with the cooperation of the sealing assembly and the first sealing plate, the sealing between the two standard parts and between the standard parts and the wall can be strengthened to avoid water leakage during use;

[0023] 3. With the joint action of the installation and disassembly structure and the guide rod, the standard section can be quickly installed and disassembled. During the disassembly process, underwater operations can be reduced, avoiding the safety hazards caused by the large number of underwater structures in traditional cofferdams and the long operation time during disassembly. At the same time, the mutual cooperation between the installation and disassembly structure and the installation ring can quickly hoist the standard parts, which is easy to operate and effectively improves the hoisting efficiency and success rate;

[0024] 4. The setting of the limit assembly can strengthen the connection between the mounting ring and the docking ring. The limit groove and the limit assembly can be used to limit the position of the mounting block to reduce the possibility of it falling during the lifting process. At the same time, the pressure block can increase the extrusion of the mounting block, increase the friction, reduce the movement of the mounting block, and further enhance the stability during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a hoisting schematic diagram of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the present invention;

[0027] Figure 3 Schematic diagram of the distribution of guide rods of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection between the support assembly and the standard section of the present invention;

[0029] Figure 5 Schematic diagram of the distribution of the sealing strip of the present invention;

[0030] Figure 6 for Figure 5 A magnified view of middle;

[0031] Figure 7 It is a schematic diagram of the connection between the docking structure and the mounting plate of the present invention;

[0032] Figure 8 It is a partial cross-sectional view of the docking structure of the present invention;

[0033] Fig. 9 It is a schematic diagram of the distribution of the through groove and the limiting groove of the present invention;

[0034] Fig.10 It is a structural schematic diagram of the limit assembly of the present invention;

[0035] Fig.11 It is a schematic diagram of the connection between the liquid storage chamber and the catheter of the present invention;

[0036] Fig.12 for Fig.11 Enlarged view of middle B;

[0037] Fig.13 It is a schematic diagram of the connection between the mounting block and the mounting ring of the present invention.

[0038] In the figure: 1, wall; 2, bottom plate; 3, guide rod; 4, casing structure; 401, standard section; 402, first sealing plate; 403, groove; 404, reinforcing rib; 41, support assembly; 411, support frame; 412, second sealing plate; 413, mounting frame; 414, first screw; 42, sealing assembly; 421, mounting shell; 422, sealing member; 423, sealing strip; 5, installation and removal structure; 501, mounting plate; 502, connecting rope; 503, connecting ring; 504, mounting ring; 505 , mounting block; 506, guide block; 51, docking structure; 511, docking ring; 512, through groove; 513, limit groove; 514, slider; 515, knob; 516, second screw; 517, storage groove; 518, rotating shaft; 519, stopper; 5110, spring; 5111, liquid storage chamber; 5112, extrusion block; 5113, catheter; 5114, adjustment chamber; 5115, pressure block; 5116, spring; 5117, trigger block; 5118, slide rod; 5119, guide rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] When implementing: Figure 1-13 As shown, a detachable steel cofferdam for the maintenance of underwater water treatment equipment comprises: a wall 1 and a bottom plate 2, wherein the bottom plate 2 is arranged below the wall 1, and one side of the wall 1 is provided with two groups of threaded holes symmetrically distributed, and the top of the bottom plate 2 is provided with evenly distributed guide rods 3, the lower ends of the guide rods 3 pass through the bottom plate 2 and are rotatably connected to the inner wall of the bottom plate 2, and the surfaces of the guide rods 3 are provided with guide grooves; a casing structure 4, wherein the casing structure 4 is arranged on the top of the bottom plate 2; wherein the casing structure 4 comprises a plurality of standard sections 401 arranged above the bottom plate 2, and the cross-sectional shape of the standard section 401 is U-shaped, and the standard section 401 is provided with .... The top and bottom of 01 are fixedly connected with a first sealing plate 402, a groove 403 is provided on the side of the first sealing plate 402 away from the standard section 401, and evenly distributed reinforcing ribs 404 are fixedly connected to the inner side of the standard section 401. The surfaces of the standard section 401 and the first sealing plate 402 are provided with guide holes matching the guide rod 3. The surface of the standard section 401 is provided with a support assembly 41. The casing structure 4 also includes a sealing assembly 42 provided on the surface of the standard section 401. The sealing assembly 42 is used to improve the sealing performance of the connection between two adjacent standard sections 401 and between the standard section 401 and the wall 1;

[0041] The standard section 401 is installed through the guide hole and the guide rod 3. After the standard section 401 is installed, a protective tube is formed between the wall 1 and the bottom plate 2, so that the water inside the protective tube can be pumped out to form a dry environment for subsequent maintenance operations. The first sealing plate 402 can achieve a sealing effect between the two standard sections 401 after the two standard sections 401 are docked, improve the sealing performance, and prevent external water from entering the inside of the protective tube. The guide rod 3 is used for the installation guide of the standard section 401, which can quickly install the standard section 401 and strengthen the strength of the protective tube.

[0042] The installation and disassembly structure 5; wherein the installation and disassembly structure 5 comprises a plurality of installation rings 504 rotatably connected to the top of the standard section 401, two installation blocks 505 symmetrically distributed are fixedly connected to the surface of the installation ring 504, a guide block 506 matching the guide groove is fixedly connected to the inner side of the installation ring 504, the installation ring 504 is coaxially arranged with the adjacent guide hole, and a guide hole is opened on the surface of the installation block 505; the installation and disassembly structure 5 also comprises two installation plates 501 arranged above the casing structure 4, two connecting rings 503 are fixedly connected to the top of the installation plate 501, a connecting rope 502 is arranged on the surface of the connecting ring 503, and two docking structures 51 symmetrically distributed are arranged at the bottom of the installation plate 501;

[0043] The connecting rope 502 is used to connect to a lifting device, such as a winch, and the mounting plate 501 can be driven upward by pulling the connecting rope 502. The mounting ring 504 can cooperate with the guide block 506 to quickly install the standard section 401, making it more stable during the downward movement. At the same time, during the disassembly process, it cooperates with the docking structure 51 to achieve a quick connection effect, so that the mounting plate 501 is driven upward by pulling the connecting rope 502 upward, and the docking structure 51 can drive the mounting ring 504 to move the standard section 401 connected thereto upward. The operation is simple and avoids the situation where part of the structure is underwater during the lifting of traditional equipment. The lifting operation is simple, which effectively improves the construction efficiency and reduces the safety hazards of underwater construction.

[0044] like Figure 1-13 As shown, the docking structure 51 includes a docking ring 511 fixedly connected to the bottom of the mounting plate 501, a mounting cavity matching the mounting ring 504 is provided at the bottom of the docking ring 511, two through grooves 512 matching the two mounting blocks 505 are provided on the inner wall of the mounting cavity, a limiting groove 513 connected to the through groove 512 is provided in the middle of the inner wall of the mounting cavity, a guide rod 5119 is fixedly connected to the middle of the inner wall of the limiting groove 513, the diameter of the guide rod 5119 is equal to the aperture of the guide hole, two sliding cavities are provided inside the docking ring 511, a limiting assembly is provided on the inner wall of the sliding cavity, and the limiting assembly includes a slider 514 slidably connected to the inner wall of the sliding cavity, and the slider 514 is close to the guide rod 5119. One side is provided with evenly distributed storage grooves 517, and a rotating shaft 518 is arranged inside the storage groove 517. Both ends of the rotating shaft 518 penetrate the storage groove 517 and are rotatably connected to the inner wall of the slider 514. A spring 5110 is fixedly connected to the upper end surface of the rotating shaft 518, and the other end of the spring 5110 is fixedly connected to the inner wall of the slider 514. A stopper 519 is fixedly connected to the surface of the rotating shaft 518, and one end of the stopper 519 extends to the inside of the limiting groove 513, and a wedge surface is provided on one side of the stopper 519. A second screw rod 516 is rotatably connected to the side of the slider 514 away from the guide rod 5119, and the other end of the second screw rod 516 penetrates the docking ring 511 and is fixedly connected to the knob 515, and the second screw rod 516 is threadedly connected to the inner wall of the docking ring 511.

[0045] The docking ring 511 can use the deadweight of the mounting plate 501 to move down along the guide rod 3, and after the docking ring 511 moves down to the right position, the mounting block 505 is inserted into the interior of the through groove 512. The positions of the two mounting blocks 505 can be determined by the positions of the guide grooves. By rotating the guide rod 3, the mounting ring 504 can also be driven to rotate under the action of the guide block 506, so as to adjust the mounting block 505 to the preset position. At this time, the guide block 506 can be driven by the rotating guide rod 3 to rotate the mounting ring 504, thereby driving the mounting block 505 to slide from the through groove 512 to the interior of the limiting groove 513. At the same time, the guide rod 5119 is inserted into the interior of the guide hole to strengthen the position of the mounting block 505. At this time, since the mounting block 505 is limited by the limiting groove 513 and the guide rod 5119, the separation of the mounting ring 504 and the docking ring 511 during the up and down movement can be avoided.

[0046] During the sliding of the mounting block 505 along the inner wall of the limiting groove 513, the wedge surface of the stop block 519 can be squeezed to drive the rotating shaft 518 to rotate and shrink to the inside of the receiving groove 517, thereby not affecting the movement of the mounting block 505. At the same time, during the rotation of the rotating shaft 518, the spring 5110 can be tightened until the mounting block 505 passes through the stop block 519 as a whole, thereby driving the stop block 519 to reset under the action of the spring 5110. When the mounting block 505 moves in the opposite direction, the other side of the stop block 519 can be pushed. At this time, the stop block 519 can be blocked by the inner wall of the receiving groove 517, so that it prevents the mounting block 505 from sliding in the opposite direction, thereby achieving the effect of further limiting the position of the mounting block 505, thereby improving the stability during the lifting process.

[0047] like Figure 1-13 As shown, the docking ring 511 is provided with two symmetrically distributed liquid storage chambers 5111, the liquid storage chambers 5111 are filled with hydraulic oil, the inner wall of the liquid storage chamber 5111 is slidably connected to an extrusion block 5112, the surface of the extrusion block 5112 is fixedly connected to a slide bar 5118, the other end of the slide bar 5118 passes through a limiting groove 513 and is fixedly connected to a trigger block 5117, the docking ring 511 is provided with two symmetrically distributed adjustment chambers 5114, the inner wall of the limiting groove 513 is slidably connected to A pressure block 5115 is connected, and the pressure block 5115 is a rubber material component. One end of the pressure block 5115 passes through the regulating cavity 5114 and extends to the inside of the limiting groove 513. The other end of the pressure block 5115 is fixedly connected to the inner wall of the regulating cavity 5114 with uniformly distributed springs 5116. The interior of the docking ring 511 is provided with uniformly distributed conduits 5113. One end of the conduit 5113 is connected to the adjacent liquid storage cavity 5111, and the other end of the conduit 5113 is connected to the adjacent regulating cavity 5114.

[0048] When the mounting block 505 slides along the inner wall of the limiting groove 513, the trigger block 5117 can be pushed to move. At the same time, when the trigger block 5117 moves, the slide bar 5118 is gradually inserted into the liquid storage chamber 5111, so that the extrusion block 5112 squeezes the hydraulic oil in the liquid storage chamber 5111 and injects it into the regulating chamber 5114. In this process, the extrusion block 5112 stretches the spring 5116, so that the hydraulic oil pushes the pressure block 5115 to squeeze the mounting block 505, thereby increasing the gap between the mounting block 505 and the pressure block 5115. The friction between them further strengthens the limiting effect on the mounting block 505 and enhances the stability during the lifting process. After the mounting ring 504 is separated from the docking ring 511, the extrusion block 5112 is reset under the action of the spring 5116, and the hydraulic oil inside the adjusting chamber 5114 is injected back into the liquid storage chamber 5111 through the conduit 5113. The hydraulic oil injected into the liquid storage chamber 5111 can push the extrusion block 5112 and the slide rod 5118 to reset the trigger block 5117 for reuse.

[0049] like Figure 1-13 As shown, the support assembly 41 includes a plurality of groups of mounting frames 413 arranged on one side of the wall 1, each group of mounting frames 413 has two mounting frames 413 and they are symmetrically distributed, one side of the mounting frame 413 is fixedly connected to the inner side of the standard section 401, the side of the mounting frame 413 close to the wall 1 is fixedly connected to the second sealing plate 412, the surface of the mounting frame 413 is provided with a first screw 414, one end of the first screw 414 sequentially penetrates the mounting frame 413 and the second sealing plate 412 and is threadedly connected to the adjacent threaded hole, the support assembly 41 also includes a support frame 411 arranged on the inner side of the standard section 401, the inner side of the standard section 401 is fixedly connected to two mounting seats, and the support frame 411 is located between the two mounting seats;

[0050] When installing the standard section 401, the mounting frame 413 provided on the standard section 401 can cooperate with the first screw rod 414 to be threadedly connected with the adjacent threaded hole to stabilize the position of the standard section 401. At the same time, the support frame 411 can be installed on the inner side of the standard section 401 by means of fixing bolts, thereby enhancing the supporting effect of the standard section 401, thereby enhancing the stability of the casing during use, and reducing the deformation of the standard section 401 caused by the pressure of external water on it.

[0051] like Figure 1-13 As shown, the sealing assembly 42 includes two mounting shells 421 respectively fixedly connected to the two ends of the standard section 401, and a sealing member 422 is fixedly connected inside the mounting shell 421. The cross-sectional shape of the sealing member 422 is P-shaped, and one end of the sealing member 422 passes through the mounting shell 421. The sealing assembly 42 also includes a sealing strip 423 arranged inside the lower groove 403, and a cavity is opened inside the sealing strip 423. The bottom of the sealing strip 423 passes through the groove 403;

[0052] The sealing member 422 with a P-shaped cross section can be squeezed to fill the gap between the end of the standard section 401 and the wall 1 during the contact between the end of the standard section 401 and the wall 1, thereby enhancing the sealing effect. The setting of the sealing strip 423 can enable the sealing strip 423 to be inserted into the groove 403 at the top of the lower standard section 401 during the docking of the two standard sections 401. At the same time, the sealing strip 423 will be squeezed and has a large deformation range due to the cavity opened inside, so it can fill the groove 403 to increase the sealing effect between the two standard sections 401. The sealing member 422 and the sealing strip 423 are both rubber components.

[0053] When the present invention is in use, the standard section 401 is installed through the guide hole through the guide rod 3. At this time, the support frame 411 should be installed on the inner side of the standard section 401 to strengthen the overall strength of the standard section 401. After the standard section 401 is installed, a protective tube is formed between the wall 1 and the bottom plate 2, so that the water inside the protective tube can be pumped out to form a dry environment for subsequent maintenance operations. After confirming that the mounting frame 413 on all standard sections 401 is aligned with the adjacent threaded holes, the position of the standard section 401 is stabilized by threading the first screw rod 414 with the adjacent threaded holes, and then the support frame 411 is removed for subsequent maintenance operations. After the maintenance is completed, the support frame 411 is installed, and the first screw rod 414 is removed in sequence. At this time, the connecting rope After 502 is connected to the winch or other lifting equipment, the docking ring 511 is aligned with the guide rod 3 and then lowered. The docking ring 511 can use the deadweight of the mounting plate 501 to move down along the guide rod 3, and after the docking ring 511 moves down to the right position, the mounting block 505 is inserted into the inside of the through groove 512. The positions of the two mounting blocks 505 can be judged by the positions of the guide grooves. By rotating the guide rod 3, the mounting ring 504 can be driven to rotate under the action of the guide block 506, so as to adjust the mounting block 505 to the preset position. After the installation is in place, the guide block 506 can be driven to rotate the guide rod 3 to rotate the mounting ring 504, driving the mounting block 505 to slide from the through groove 512 to the inside of the limiting groove 513, and at the same time, the guide rod 5119 is inserted into the guide The position of the mounting block 505 is strengthened inside the hole. At this time, since the mounting block 505 is limited by the limiting groove 513 and the guide rod 5119, the mounting ring 504 and the docking ring 511 can be prevented from separating during the up and down movement. At the same time, under the action of the limiting component, the mounting block 505 can be prevented from sliding in the opposite direction, thereby achieving the effect of further limiting the position of the mounting block 505, thereby improving the stability during the lifting process. When the mounting block 505 slides along the inner wall of the limiting groove 513, the trigger block 5117 can be pushed to move, and the pressure block 5115 can be pushed to squeeze the mounting block 505, thereby increasing the friction between the mounting block 505 and the mounting block 505, thereby further strengthening the limiting effect of the mounting block 505 and strengthening the stability of the mounting block 505. The stability during the lifting process is ensured, and the connecting rope 502 is driven by starting the lifting equipment to move the mounting plate 501 upward. Under the action of the docking structure 51, the mounting ring 504 can be driven to move the standard section 401 connected thereto upward. The operation is simple and avoids the situation in which part of the structure is located underwater and is inconvenient to operate during the lifting of traditional equipment. When the mounting ring 504 is separated from the docking ring 511, it is only necessary to rotate the second screw 516 to drive the slider 514 away from the mounting block 505 to release the reverse sliding limit of the mounting block 505, so that the mounting ring 504 can be reversely rotated to separate the docking ring 511. The lifting operation is simple, which effectively improves the construction efficiency and reduces the safety hazards of underwater construction. The installation and disassembly operations are simple and can be used cyclically.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A detachable steel cofferdam for maintenance of underwater water treatment equipment, characterized in that: include: A wall (1) and a bottom plate (2), wherein the bottom plate (2) is arranged below the wall (1), one side of the wall (1) is provided with two groups of threaded holes which are symmetrically distributed, the top of the bottom plate (2) is provided with evenly distributed guide rods (3), the lower ends of the guide rods (3) penetrate the bottom plate (2) and are rotatably connected to the inner wall of the bottom plate (2), and the surface of the guide rods (3) is provided with guide grooves; A casing structure (4), wherein the casing structure (4) is arranged on the top of the base plate (2); The casing structure (4) comprises a plurality of standard sections (401) arranged above the bottom plate (2); the cross-sectional shape of the standard section (401) is U-shaped; the top and bottom of the standard section (401) are fixedly connected to a first sealing plate (402); a groove (403) is provided on a side of the first sealing plate (402) away from the standard section (401); uniformly distributed reinforcing ribs (404) are fixedly connected to the inner side of the standard section (401); guide holes matching the guide rod (3) are provided on the surfaces of the standard section (401) and the first sealing plate (402); and a support assembly (41) is provided on the surface of the standard section (401); The casing structure (4) further comprises a sealing assembly (42) arranged on the surface of the standard section (401), wherein the sealing assembly (42) is used to improve the sealing performance of the connection between two adjacent standard sections (401) and between the standard section (401) and the wall (1); Installation and disassembly structure (5); The mounting structure (5) comprises a plurality of mounting rings (504) rotatably connected to the top of the standard section (401); two mounting blocks (505) symmetrically distributed are fixedly connected to the surface of the mounting ring (504); a guide block (506) matching the guide groove is fixedly connected to the inner side of the mounting ring (504); the mounting ring (504) is coaxially arranged with the adjacent guide hole; and a guide hole is provided on the surface of the mounting block (505); The installation and disassembly structure (5) further comprises two installation plates (501) arranged above the casing structure (4); two connection rings (503) are fixedly connected to the top of the installation plates (501); a connection rope (502) is arranged on the surface of the connection ring (503); and two symmetrically distributed docking structures (51) are arranged at the bottom of the installation plates (501).

2. The detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 1 is characterized by: The docking structure (51) comprises a docking ring (511) fixedly connected to the bottom of the mounting plate (501); a mounting cavity matching the mounting ring (504) is provided at the bottom of the docking ring (511); two through grooves (512) matching the two mounting blocks (505) are provided on the inner wall of the mounting cavity; a limiting groove (513) connected to the through groove (512) is provided in the middle of the inner wall of the mounting cavity; a guide rod (5119) is fixedly connected to the middle of the inner wall of the limiting groove (513); the diameter of the guide rod (5119) is equal to the aperture of the guide hole; two sliding cavities are provided inside the docking ring (511); a limiting assembly is provided on the inner wall of the sliding cavity.

3. A detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 2, characterized in that: The limiting assembly includes a slider (514) slidably connected to the inner wall of the sliding cavity, and a side of the slider (514) close to the guide rod (5119) is provided with evenly distributed receiving grooves (517), and a rotating shaft (518) is arranged inside the receiving groove (517). Both ends of the rotating shaft (518) pass through the receiving groove (517) and are rotatably connected to the inner wall of the slider (514). The upper end surface of the rotating shaft (518) is fixedly connected to a spring (5110), and the other end of the spring (5110) is fixedly connected to the inner wall of the slider (514). A stopper (519) is fixedly connected to the surface of the rotating shaft (518), and one end of the stopper (519) extends to the inside of the limiting groove (513), and a wedge surface is provided on one side of the stopper (519).

4. The detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 3 is characterized by: The side of the slider (514) away from the guide rod (5119) is rotatably connected to a second screw rod (516), the other end of the second screw rod (516) passes through the docking ring (511) and is fixedly connected to a knob (515), and the second screw rod (516) is threadedly connected to the inner wall of the docking ring (511).

5. The detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 4 is characterized in that: The docking ring (511) is provided with two symmetrically distributed liquid storage chambers (5111), the liquid storage chambers (5111) are filled with hydraulic oil, the inner wall of the liquid storage chamber (5111) is slidably connected to an extrusion block (5112), the surface of the extrusion block (5112) is fixedly connected to a slide rod (5118), and the other end of the slide rod (5118) passes through the limiting groove (513) and is fixedly connected to a trigger block (5117).

6. A detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 5, characterized in that: The interior of the docking ring (511) is provided with two symmetrically distributed regulating cavities (5114); the inner wall of the limiting groove (513) is slidably connected with a pressure block (5115); one end of the pressure block (5115) passes through the regulating cavity (5114) and extends to the interior of the limiting groove (513); the other end of the pressure block (5115) and the inner wall of the regulating cavity (5114) are fixedly connected with uniformly distributed springs (5116); the interior of the docking ring (511) is provided with uniformly distributed conduits (5113); one end of the conduit (5113) is connected to the adjacent liquid storage cavity (5111); and the other end of the conduit (5113) is connected to the adjacent regulating cavity (5114).

7. The detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 1 is characterized by: The support assembly (41) comprises a plurality of groups of mounting frames (413) arranged on one side of the wall (1), wherein each group of the mounting frames (413) comprises two mounting frames (413) which are symmetrically distributed, one side of the mounting frames (413) being fixedly connected to the inner side of the standard section (401), a side of the mounting frames (413) close to the wall (1) being fixedly connected to a second sealing plate (412), a surface of the mounting frames (413) being provided with a first screw rod (414), one end of the first screw rod (414) passing through the mounting frames (413) and the second sealing plate (412) in sequence and being threadedly connected to the adjacent threaded holes.

8. The detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 7 is characterized in that: The support assembly (41) further comprises a support frame (411) arranged inside the standard section (401), two mounting seats are fixedly connected to the inside of the standard section (401), and the support frame (411) is located between the two mounting seats.

9. A detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 8, characterized in that: The sealing assembly (42) comprises two mounting shells (421) respectively fixedly connected to the two ends of the standard section (401); a sealing member (422) is fixedly connected inside the mounting shell (421); the cross-sectional shape of the sealing member (422) is P-shaped; one end of the sealing member (422) passes through the mounting shell (421).

10. A detachable steel cofferdam for maintenance of underwater water treatment equipment according to claim 9, characterized in that: The sealing assembly (42) further comprises a sealing strip (423) arranged inside the groove (403) below, a cavity is provided inside the sealing strip (423), and the bottom of the sealing strip (423) passes through the groove (403).

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