Cable protection pipe inner cavity water accumulation guiding and draining device

Abstract

The application discloses a kind of cable protection pipe inner chamber water guide device, belong to cable protection auxiliary equipment technical field, including two groups of installation mechanism and water connection and drainage mechanism in protection pipe outside. Protection pipe is spaced apart along circumference and is provided with multiple strip drainage channels, and the first semicircular plate and the second semicircular plate of water connection and drainage mechanism form annular water receiving space covering each strip drainage channel, and are slidably connected with the arc-shaped guide strip of installation mechanism through T-shaped anti-drop guide groove. Water receiving pipe is communicated with annular water receiving space, and is kept below protection pipe under the action of gravity of water connection and drainage mechanism itself, so that inner chamber water can still be guided out after protection pipe rotates circumferentially. Water receiving pipe is provided with water receiving hopper, filter cartridge and float, and the filter cartridge is provided with axially movable flushing assembly outside, and the piston cylinder is provided with cleaning brush, to realize water filtration, water level control type drainage and filter cartridge flushing and cleaning, reduce the risk of blockage and facilitate maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of cable protection auxiliary equipment, and particularly relates to a water drainage device for the inner cavity of a cable protection pipe. Background Technology

[0002] Cable protection pipes are widely used in underground laying of power cables, pipe gallery laying, and road crossing projects to isolate the cables from soil, groundwater, and external mechanical loads, and to provide a relatively enclosed laying space. During long-term use, factors such as the sealing condition of pipe joints, groundwater infiltration, rainwater backflow, temperature condensation, and residual water from construction can easily cause water to accumulate inside the protection pipe. Prolonged water retention not only increases the humidity inside the pipe but may also carry mud, sand, debris, and other impurities, affecting the cable's operating environment. Current technology typically involves installing drainage holes, drainage joints, or water collection structures at a pre-set low position in the protection pipe, allowing the accumulated water to drain out by gravity.

[0003] However, cable protection pipes may rotate to some extent during construction, installation, soil settlement, or external stress, causing the originally low-positioned drainage outlets to deviate from the actual lowest position inside the pipe. This makes it difficult for water to continuously enter the drainage channel, and the fixed water collection components are also difficult to adjust their position according to the changes in the pipe's posture. At the same time, silt and foreign objects in the existing drainage structure may accumulate in the filter or drainage hose, reducing the flow area. When the filter is clogged, it usually needs to be completely disassembled or cleaned with other tools, making it difficult to flush different parts of the filter at the same time, resulting in cumbersome maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a water drainage device for the inner cavity of a cable protection pipe, which solves the problems of the drainage position of existing cable protection pipes being easily shifted with pipe rotation, the filter structure being easily clogged, and the inconvenience of cleaning and maintenance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water drainage device for the inner cavity of a cable protection pipe is installed on the outside of the pipe. The pipe wall has multiple strip-shaped drainage channels extending axially and spaced circumferentially. The device includes: two sets of installation mechanisms located on opposite sides of the multiple strip-shaped drainage channels, each installation mechanism comprising two semi-circular mounting rings on the outside of the pipe, each semi-circular mounting ring having an arc-shaped guide strip; and a water receiving mechanism comprising a first semi-circular plate and a second semi-circular plate, the first and second semi-circular plates forming an annular water receiving space covering the multiple strip-shaped drainage channels. Both the first and second semi-circular plates have two sets of T-shaped anti-detachment guide grooves, which slide in cooperation with the arc-shaped guide strips of the two sets of installation mechanisms. A water receiving pipe connected to the annular water receiving space is attached to the first semi-circular plate, and a drain hose is connected to the water receiving pipe. When the pipe rotates circumferentially, the water receiving mechanism can slide relative to the pipe circumferentially, and under its own weight, the water receiving pipe remains below the pipe.

[0006] Preferably, the installation mechanism further includes: multiple reinforcing plates disposed in the inner cavity of the protective tube, the reinforcing plates extending axially across the end region of the corresponding strip-shaped drainage groove along the protective tube to compensate for the decrease in pipe wall strength caused by the opening of the strip-shaped drainage groove; the side of the reinforcing plate facing the inner wall of the protective tube is set as an arc-shaped surface, and threaded holes are respectively opened at both ends of the reinforcing plate; multiple first bolts, which sequentially pass through the semi-circular mounting ring and the protective tube, and are threadedly connected to the corresponding reinforcing plate, so that the pipe wall of the protective tube is clamped between the semi-circular mounting ring and the reinforcing plate; wherein, two adjacent semi-circular mounting rings cooperate with each other to form a complete guide ring surrounding the protective tube, and two adjacent arc-shaped guide strips together form a circular guide strip extending circumferentially along the protective tube.

[0007] Preferably, the drainage mechanism further includes: four connecting plates, which are respectively fixedly disposed on the first semicircular plate and the second semicircular plate; and a plurality of second bolts, which are respectively inserted through the corresponding connecting plates to detachably connect the first semicircular plate and the second semicircular plate.

[0008] Preferably, the drainage mechanism further includes: a water receiving hopper, installed inside the water receiving pipe and located below the position where the water receiving pipe communicates with the annular water receiving space; and a filter cylinder, the top of which is fixedly connected to and communicates with the water receiving hopper, for receiving the accumulated water collected by the water receiving hopper, so that the accumulated water enters the water receiving pipe after passing through the cylinder wall of the filter cylinder.

[0009] Preferably, the drainage mechanism further includes: multiple guide rods disposed inside the water receiving pipe, the upper ends of which are fixedly connected to the water receiving hopper; and a float slidably connected to the multiple guide rods, having an arc-shaped side corresponding to the inner wall of the water receiving pipe and the water inlet position of the drainage hose.

[0010] Preferably, the water receiving and draining mechanism further includes: a piston cylinder disposed below the water receiving pipe, with a connecting ring installed on its top, the connecting ring being threadedly connected to the lower part of the water receiving pipe; a flushing medium input pipe installed on the side of the piston cylinder; a piston plate slidably disposed inside the piston cylinder, with a piston rod installed at its bottom; and a push plate detachably inserted into the lower end of the piston rod.

[0011] Preferably, the drainage mechanism further includes a flushing assembly, which includes: multiple vertical pipes, the lower ends of which are fixedly connected to the top surface of the piston plate and extend upward through the top surface of the piston cylinder and are slidably connected to the piston cylinder; multiple horizontal pipes, respectively disposed inside the piston cylinder, each of which is connected to a corresponding vertical pipe; a hollow ring, disposed inside the water receiving pipe and sleeved on the outside of the filter cylinder, the hollow ring being fixedly connected to and connected to the upper ends of the multiple vertical pipes; and multiple nozzles, spaced apart along the circumference of the hollow ring on the inner wall of the hollow ring and facing the outer circumferential surface of the filter cylinder.

[0012] Preferably, the drainage mechanism further includes: a plurality of cleaning brushes fixedly disposed on the top surface of the piston cylinder; wherein, when the piston cylinder rotates relative to the water inlet pipe to release the threaded connection between the connecting ring and the water inlet pipe, the plurality of cleaning brushes rotate synchronously with the piston cylinder and move along the inner wall of the filter cylinder.

[0013] Preferably, the push plate component includes: a horizontal plate with a sliding groove on its side, the lower end of the piston rod being inserted into the sliding groove, and one side of the horizontal plate being configured as an arc-shaped surface adapted to the outer circumferential surface of the protective tube; a strip-shaped positioning groove extending through the horizontal plate for positioning the processing position of the strip-shaped drainage groove; and two positioning holes extending through the horizontal plate for positioning the processing position of the mounting holes on the protective tube.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention provides multiple strip-shaped drainage channels spaced at intervals along the circumference of the protective pipe, and the annular water-receiving space formed by the first and second semicircular plates covers each strip-shaped drainage channel. At the same time, the sliding cooperation between the T-shaped anti-detachment guide groove and the arc-shaped guide strip allows the water-receiving mechanism to rotate circumferentially relative to the protective pipe. Under the gravity of the water-receiving pipe and the piston cylinder, the water-receiving pipe can remain below the protective pipe, so that it can still receive and drain the water accumulated in its inner cavity after the protective pipe rotates circumferentially.

[0015] 2. This invention utilizes the reciprocating motion of the push plate, piston rod, and piston plate, in conjunction with the one-way valve in the flushing medium input pipe and horizontal pipe, to sequentially deliver air or clean water to the vertical pipe, hollow ring, and nozzle. The vertical pipe simultaneously drives the hollow ring to move axially along the filter cylinder, enabling the nozzle to backwash different positions of the filter cylinder. Furthermore, the piston cylinder is threadedly connected to the water inlet pipe, allowing the cleaning brush to rotate and scrub the inner wall of the filter cylinder during disassembly, facilitating the removal of accumulated debris inside the filter cylinder.

[0016] 3. The float in this invention can rise and fall along the guide rod according to the water level in the water pipe. When the water level rises, the drain hose is opened to drain water, and when the water level drops, the drain hose is blocked again, thus taking into account both the drainage of accumulated water and the blocking of external water and small animals.

[0017] 4. The present invention connects the semi-circular mounting ring, the protective tube, and the reinforcing plate located inside the protective tube in sequence by the first bolt, so that the wall of the protective tube is clamped between the semi-circular mounting ring and the reinforcing plate; the arc-shaped surface of the reinforcing plate fits against the inner wall of the protective tube, which can distribute the load on the installation position and support the pipe section with the strip drainage groove and the installation hole, while providing a stable installation foundation for the arc-shaped guide strip. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the cable protection pipe's internal water drainage device installed on the protection pipe according to the present invention. Figure 2 This is a schematic diagram of the assembly structure of the protective pipe, the strip drainage channel, and the two sets of installation mechanisms in this invention; Figure 3 This is a schematic diagram of the installation mechanism in this invention; Figure 4 This is a schematic diagram of the overall structure of the drainage mechanism in this invention; Figure 5 This is a cross-sectional view of the drainage mechanism in this invention. Figure 6 In this invention Figure 5 A magnified view of part A; Figure 7 This is an exploded structural diagram of the drainage mechanism in this invention; Figure 8 In this invention Figure 7 A magnified view of section B; Figure 9 This is a schematic diagram of the assembly structure of the push plate and the protective tube in this invention; Reference numerals: 100, Protective pipe; 101, Strip-shaped drainage channel; 102, Mounting hole; 200, Mounting mechanism; 201, Semicircular mounting ring; 202, Arc-shaped guide strip; 203, Reinforcing plate; 204, First bolt; 300, Drainage connection mechanism; 301, First semicircular plate; 302, Second semicircular plate; 303, T-shaped anti-detachment guide groove; 304, Connecting plate; 305, Second bolt; 306, Water connection pipe; 307, Drainage hose; 308, Water connection point. 309. Filter cylinder; 311. Guide rod; 312. Float; 321. Piston cylinder; 322. Connecting ring; 323. Flushing medium input pipe; 324. Piston plate; 325. Piston rod; 326. Push plate; 3261. Horizontal plate; 3262. Slide groove; 3263. Strip positioning groove; 3264. Positioning hole; 330. Flushing assembly; 331. Vertical pipe; 332. Horizontal pipe; 333. Hollow ring; 334. Nozzle; 340. Cleaning brush. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0022] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Example: Figures 1 to 9 As shown, a water drainage device for the inner cavity of a cable protection pipe is applicable to a prefabricated protection pipe 100 installed without cables, or to an existing protection pipe 100 in a maintenance well, pipe gallery, or other location where the location of the cable inside the pipe can be confirmed and isolation and protection measures can be taken.

[0024] The water drainage device inside the cable protection pipe includes two sets of installation mechanisms 200 and one set of drainage mechanism 300. Multiple strip-shaped drainage channels 101 are formed on the wall of the protection pipe 100, and these channels are spaced apart circumferentially along the pipe. Each channel extends axially along the protection pipe 100, allowing water in the inner cavity of the pipe to flow outwards. Multiple mounting holes 102 are also provided on the protection pipe 100, located on both sides of the multiple strip-shaped drainage channels 101, and are used to install the two sets of installation mechanisms 200.

[0025] Specifically, by setting multiple strip-shaped drainage channels 101 around the circumference of the protective pipe 100, when the protective pipe 100 rotates around the circumference due to installation errors, settlement or stress, the strip-shaped drainage channels 101 at different circumferential positions of the protective pipe 100 can rotate synchronously with the protective pipe 100. Among them, the strip-shaped drainage channel 101 located in the low area of ​​the protective pipe 100 can come into contact with the water accumulated at the bottom of the inner cavity of the protective pipe 100, so that the water can be discharged outward through the corresponding strip-shaped drainage channel 101.

[0026] like Figure 2 and Figure 3 As shown, each mounting mechanism 200 includes two semi-circular mounting rings 201, multiple reinforcing plates 203, and multiple first bolts 204. The inner contours of the two semi-circular mounting rings 201 are adapted to the outer circumferential surface of the protective tube 100. The two semi-circular mounting rings 201 are respectively disposed on opposite sides of the protective tube 100. When the two semi-circular mounting rings 201 are installed on the protective tube 100, the two semi-circular mounting rings 201 cooperate with each other to form a complete guide ring surrounding the protective tube 100.

[0027] Each semicircular mounting ring 201 has a through hole through which the first bolt 204 passes. An arc-shaped guide strip 202 is fixedly mounted on each of the two semicircular mounting rings 201, extending along the arc direction of the corresponding semicircular mounting ring 201. When the two semicircular mounting rings 201 are closed to form a complete guide ring, the arc-shaped guide strips 202 on the two semicircular mounting rings 201 correspond to each other and form a circular guide strip extending circumferentially along the protective tube 100.

[0028] Multiple reinforcing plates 203 are disposed in the inner cavity of the protective tube 100, and threaded holes are provided at both ends of each reinforcing plate 203. The side of the reinforcing plate 203 facing the inner wall of the protective tube 100 is set as an arc-shaped surface, and the curvature of the arc-shaped surface is adapted to the curvature of the inner wall of the protective tube 100, so that the reinforcing plate 203 can fit against the inner wall of the protective tube 100.

[0029] Specifically, when installing the installation mechanism 200, the reinforcing plate 203 is first sent into the inner cavity of the protective tube 100 through the strip drainage groove 101 on the protective tube 100. Then, the position of the reinforcing plate 203 is adjusted so that the threaded holes at both ends of the reinforcing plate 203 are aligned with the corresponding mounting holes 102 on the protective tube 100, and the arc-shaped surface of the reinforcing plate 203 is in contact with the inner wall of the protective tube 100.

[0030] Subsequently, two semicircular mounting rings 201 are placed on opposite sides of the protective tube 100, so that the through holes on the semicircular mounting rings 201 correspond to the mounting holes 102 on the protective tube 100. The first bolt 204 passes through the through holes on the semicircular mounting rings 201 and the mounting holes 102 on the protective tube 100 in sequence, and then is threadedly connected to the threaded holes on the reinforcing plate 203.

[0031] After tightening the first bolt 204, the semi-circular mounting ring 201 is attached to the outer wall of the protective tube 100, and the reinforcing plate 203 is attached to the inner wall of the protective tube 100. The tube wall of the protective tube 100 is clamped between the semi-circular mounting ring 201 and the reinforcing plate 203, thereby connecting the semi-circular mounting ring 201, the protective tube 100 and the reinforcing plate 203 into one unit.

[0032] In the same manner, a set of installation mechanisms 200 is installed on both sides of the multiple strip drainage channels 101 along the axial direction. After the two sets of installation mechanisms 200 are installed, two axially spaced complete guide rings are formed on the outside of the protective pipe 100. The arc-shaped guide strips 202 on the two complete guide rings form two circular guide strips, and the multiple strip drainage channels 101 are located between the two circular guide strips.

[0033] like Figure 1 , Figure 4 and Figure 7 As shown, the drainage mechanism 300 includes a first semicircular plate 301, a second semicircular plate 302, multiple sets of T-shaped anti-detachment guide grooves 303, multiple connecting plates 304, and multiple second bolts 305. Both the first semicircular plate 301 and the second semicircular plate 302 are arc-shaped plates adapted to the outer circumferential surface of the protective pipe 100. The first semicircular plate 301 and the second semicircular plate 302 are respectively disposed on opposite sides of the protective pipe 100, and two connecting plates 304 are fixedly installed on each of the first semicircular plate 301 and the second semicircular plate 302. Multiple second bolts 305 pass through corresponding connecting plates 304 to detachably connect the first semicircular plate 301 and the second semicircular plate 302.

[0034] When the first semicircular plate 301 and the second semicircular plate 302 are connected, the first semicircular plate 301 and the second semicircular plate 302 together surround the outside of the protective pipe 100, and form an annular water receiving space covering multiple strip drainage channels 101 outside the protective pipe 100.

[0035] Two sets of T-shaped anti-detachment guide grooves 303 are provided on the first semicircular plate 301 and the second semicircular plate 302, and the two sets of T-shaped anti-detachment guide grooves 303 correspond to the arc-shaped guide strips 202 on the two sets of mounting mechanisms 200 respectively.

[0036] Specifically, when installing the drainage mechanism 300, the first semicircular plate 301 and the second semicircular plate 302 are placed on both sides of the protective pipe 100, and the T-shaped anti-detachment guide grooves 303 on the first semicircular plate 301 and the second semicircular plate 302 are respectively fitted onto the corresponding arc-shaped guide strips 202.

[0037] Subsequently, the connecting plate 304 on the first semicircular plate 301 is aligned with the connecting plate 304 on the second semicircular plate 302, and the corresponding connecting plates 304 are connected by multiple second bolts 305, so that the first semicircular plate 301 and the second semicircular plate 302 are connected into a whole surrounding the protective tube 100.

[0038] The T-shaped anti-detachment guide groove 303 and the arc-shaped guide strip 202 form a sliding fit, allowing the first semicircular plate 301 and the second semicircular plate 302 to move along the circumferential extension direction of the arc-shaped guide strip 202, that is, the drainage mechanism 300 can rotate circumferentially relative to the protective pipe 100. At the same time, the T-shaped anti-detachment guide groove 303 covers and restricts the arc-shaped guide strip 202 to prevent the first semicircular plate 301 and the second semicircular plate 302 from detaching from the installation mechanism 200 in a direction away from the protective pipe 100.

[0039] After the first semicircular plate 301 and the second semicircular plate 302 are connected, the multiple strip-shaped drainage channels 101 are all located within the annular water-receiving space formed by the first semicircular plate 301 and the second semicircular plate 302. After the water accumulated in the inner cavity of the protective pipe 100 is discharged through any of the strip-shaped drainage channels 101, it can enter the annular water-receiving space formed by the first semicircular plate 301 and the second semicircular plate 302.

[0040] like Figure 4 , Figure 5 and Figure 7 As shown, the drainage mechanism 300 also includes a water inlet pipe 306, a drain hose 307, a water inlet 308, and a filter cylinder 309.

[0041] A water inlet pipe 306 is fixedly installed on the side of the first semicircular plate 301 away from the protective pipe 100. The interior of the water inlet pipe 306 is connected to the annular water inlet space formed by the first semicircular plate 301 and the second semicircular plate 302. The water inlet pipe 306 extends radially outward along the protective pipe 100. When the drainage mechanism 300 is in the normal operating position, the water inlet pipe 306 is located below the protective pipe 100. A drain hose 307 is fixedly installed on the side of the water inlet pipe 306. The interior of the drain hose 307 is connected to the interior of the water inlet pipe 306, and the drain hose 307 is used to drain the water in the water inlet pipe 306 outward.

[0042] The water receiving hopper 308 is installed inside the water receiving pipe 306 and is located below the position where the water receiving pipe 306 communicates with the annular water receiving space. The upper part of the water receiving hopper 308 has a water receiving opening, and the lower part of the water receiving hopper 308 forms a water outlet; the top of the filter cylinder 309 communicates with the interior of the water receiving hopper 308, and the bottom of the filter cylinder 309 is an opening.

[0043] Specifically, the water receiving hopper 308 collects water flowing down from the annular water receiving space and guides it into the filter cartridge 309, reducing the possibility of water bypassing the filter cartridge 309 and directly entering the drain hose 307. The filter cartridge 309 blocks sediment, foreign objects, and other debris in the water, reducing the possibility of debris entering the drain hose 307 and causing blockage.

[0044] like Figure 5 and Figure 7 As shown, the drainage mechanism 300 also includes multiple guide rods 311 and a float 312. The multiple guide rods 311 are disposed inside the water receiving pipe 306, and the upper ends of the multiple guide rods 311 are fixedly connected to the water receiving hopper 308. The float 312 is slidably connected to the multiple guide rods 311. The float 312 has guide holes that cooperate with the guide rods 311. The outer side of the float 312 is provided with an arc-shaped side that is adapted to the inner wall of the water receiving pipe 306. The arc-shaped side corresponds to the water inlet position of the drain hose 307.

[0045] Specifically, under normal circumstances, when the water level in the water inlet pipe 306 is low, the float 312 is located at the lower part of the guide rod 311, and the arc-shaped side of the float 312 blocks the connection between the drain hose 307 and the water inlet pipe 306.

[0046] As filtered water continuously enters the inlet pipe 306 and raises the water level within it, the float 312, under the buoyancy of the water, moves upward along the guide rod 311. As the float 312 moves upward, its arc-shaped side gradually moves away from the inlet position of the drain hose 307, connecting the drain hose 307 to the inside of the inlet pipe 306, allowing water in the inlet pipe 306 to be discharged outward through the drain hose 307.

[0047] When the water in the water inlet pipe 306 is discharged, the water level in the water inlet pipe 306 drops, the buoyancy of the float 312 decreases, and the float 312 moves downward along the guide rod 311 under its own weight and blocks the water inlet position of the drain hose 307 again.

[0048] like Figure 4 , Figure 5 and Figure 8 As shown, the drainage mechanism 300 also includes a piston cylinder 321, a connecting ring 322, a flushing medium input pipe 323, a piston plate 324, a piston rod 325, a push plate 326, and a flushing assembly 330.

[0049] The piston cylinder 321 is positioned below the water inlet pipe 306. A connecting ring 322 is fixedly installed on the top of the piston cylinder 321. The connecting ring 322 is threadedly connected to the lower part of the water inlet pipe 306, allowing the piston cylinder 321 to be detachably mounted on the water inlet pipe 306 via the connecting ring 322. After the piston cylinder 321 is installed on the water inlet pipe 306, the lower part of the filter cylinder 309 corresponds to the top of the piston cylinder 321. The filter cylinder 309, the water inlet pipe 306, and the piston cylinder 321 together form a structural space for filtering accumulated water and cleaning the filter cylinder 309.

[0050] A flushing medium inlet pipe 323 is installed on the side of the piston cylinder 321. A one-way valve is installed inside the flushing medium inlet pipe 323 to prevent air or clean water that has entered the piston cylinder 321 from flowing out in the reverse direction through the flushing medium inlet pipe 323. A piston plate 324 is slidably disposed inside the piston cylinder 321. The upper end of the piston rod 325 is fixedly connected to the bottom surface of the piston plate 324, and the lower end of the piston rod 325 extends downward to the outside of the piston cylinder 321. A push plate 326 is detachably inserted into the lower end of the piston rod 325, allowing the operator to reciprocate the piston rod 325 and piston plate 324 within the piston cylinder 321 by reciprocating the push plate 326.

[0051] like Figure 5 , Figure 6 and Figure 8 As shown, the flushing assembly 330 includes multiple vertical pipes 331, multiple horizontal pipes 332, a hollow ring 333, and multiple nozzles 334. The lower ends of the multiple vertical pipes 331 are fixedly connected to the top surface of the piston plate 324. The multiple vertical pipes 331 extend upwards through the top surface of the piston cylinder 321 and are slidably connected to the top surface of the piston cylinder 321. A guide sealing sleeve is provided between the vertical pipes 331 and the top surface of the piston cylinder 321 to reduce the risk of air or cleaning water leaking from the vertical pipes 331 during pressurization; the guide sealing sleeve is not shown. When the piston plate 324 moves up and down inside the piston cylinder 321, the multiple vertical pipes 331 move up and down synchronously with the piston plate 324.

[0052] Each vertical tube 331 is equipped with a horizontal tube 332, which is located inside the piston cylinder 321. The interior of the horizontal tube 332 is connected to the interior of the corresponding vertical tube 331. A one-way valve is installed inside the horizontal tube 332. This one-way valve is used to allow air or clean water in the piston cylinder 321 to enter the vertical tube 331 through the horizontal tube 332, and to prevent air or clean water in the vertical tube 331 from flowing back into the piston cylinder 321.

[0053] A hollow ring 333 is disposed inside the water inlet pipe 306 and sleeved on the outside of the filter cartridge 309. The hollow ring 333 is fixedly connected to the upper ends of multiple vertical pipes 331, and the interiors of the multiple vertical pipes 331 are all connected to the interior of the hollow ring 333. Multiple nozzles 334 are installed on the inner wall of the hollow ring 333, spaced apart circumferentially along the hollow ring 333 and facing the outer circumferential surface of the filter cartridge 309. Air or clean water entering the hollow ring 333 can be sprayed onto the filter cartridge 309 through the multiple nozzles 334.

[0054] Specifically, when the piston plate 324 moves downward, the volume of the space above the piston plate 324 increases, and a suction effect is generated above the piston plate 324. At this time, the one-way valve in the flushing medium input pipe 323 opens, and outside air or clean water enters the piston cylinder 321 through the flushing medium input pipe 323; the one-way valve in the horizontal pipe 332 restricts the medium in the vertical pipe 331 and the hollow ring 333 from entering the piston cylinder 321 in the reverse direction.

[0055] When the piston plate 324 moves upward, the volume of the space above the piston plate 324 decreases, and the air or cleaning water entering the piston cylinder 321 is compressed by the piston plate 324. At this time, the one-way valve in the flushing medium input pipe 323 restricts the air or cleaning water from flowing out of the flushing medium input pipe 323 in the reverse direction, and the one-way valve in the horizontal pipe 332 opens, allowing the air or cleaning water to enter the hollow ring 333 in sequence through the horizontal pipe 332 and the vertical pipe 331, and then be sprayed onto the filter cylinder 309 by multiple nozzles 334.

[0056] Since multiple vertical tubes 331 are fixedly connected to piston plates 324, and hollow rings 333 are fixedly connected to the upper ends of multiple vertical tubes 331, during the reciprocating movement of piston plates 324, multiple vertical tubes 331 drive hollow rings 333 to reciprocate along the axial direction of filter cylinder 309, causing the spray positions of multiple nozzles 334 relative to filter cylinder 309 to change, enabling multiple nozzles 334 to backwash filter cylinder 309 at different height positions.

[0057] like Figure 6 and Figure 8As shown, the drainage mechanism 300 also includes multiple cleaning brushes 340, all of which are fixedly mounted on the top surface of the piston cylinder 321. When the piston cylinder 321 is threadedly connected to the water inlet pipe 306 via the connecting ring 322, the multiple cleaning brushes 340 extend from the lower part of the filter cylinder 309 into the filter cylinder 309 and contact the inner wall of the filter cylinder 309.

[0058] Specifically, multiple cleaning brushes 340 are installed on the top surface of the piston cylinder 321 so that the rotational motion generated by the piston cylinder 321 during disassembly and assembly can be transmitted to the cleaning brushes 340, thereby cleaning the inner wall of the filter cylinder 309 while disassembling the piston cylinder 321.

[0059] like Figure 4 , Figure 8 and Figure 9 As shown, the push plate component 326 includes a horizontal plate 3261. A sliding groove 3262 is provided on the side of the horizontal plate 3261, through which the horizontal plate 3261 is inserted into the lower end of the piston rod 325. One side of the horizontal plate 3261 is configured as an arc-shaped surface, which is adapted to the outer peripheral surface of the protective tube 100. A strip-shaped positioning groove 3263 and two positioning holes 3264 are provided through the horizontal plate 3261.

[0060] Specifically, the arc-shaped surface of the horizontal plate 3261 is attached to the outer circumference of the protective tube 100, and a grooving tool is used to process the protective tube 100 along the strip positioning groove 3263 to form a strip drainage groove 101 on the protective tube 100; a hole-making tool is used to process the protective tube 100 through two positioning holes 3264 to form a mounting hole 102 on the protective tube 100 corresponding to the mounting mechanism 200.

[0061] Working principle: In practical use, firstly, the push plate 326 is removed from the piston rod 325, and the arc-shaped surface of the horizontal plate 3261 is attached to the outer circumference of the protective tube 100. The processing position of the strip drainage groove 101 is determined by the strip positioning groove 3263, and the processing position of the mounting hole 102 is determined by the two positioning holes 3264. Using a grooving tool, the strip drainage groove 101 is made on the protective tube 100 along the strip positioning groove 3263. Using a hole-making tool, the mounting hole 102 is made on the protective tube 100 through the positioning holes 3264. After completing the processing of a set of strip drainage grooves 101 and mounting holes 102, the push plate 326 is moved circumferentially along the protective tube 100, and the processing is repeated until multiple strip drainage grooves 101 and multiple mounting holes 102 are formed at intervals along the circumference of the protective tube 100.

[0062] When installing two sets of installation mechanisms 200, multiple reinforcing plates 203 are respectively sent into the protective pipe 100 through the strip drainage groove 101, so that the threaded holes at both ends of the reinforcing plate 203 are aligned with the corresponding mounting holes 102, and the arc-shaped surface of the reinforcing plate 203 is attached to the inner wall of the protective pipe 100.

[0063] Two semicircular mounting rings 201 are placed on opposite sides of the protective tube 100. The first bolt 204 is passed through the through hole on the semicircular mounting ring 201 and the mounting hole 102 on the protective tube 100 in sequence, and then screwed into the threaded hole on the reinforcing plate 203, thereby connecting the semicircular mounting ring 201, the protective tube 100 and the reinforcing plate 203 into one unit.

[0064] In the same manner, another set of mounting mechanisms 200 is installed on the other side of the multiple strip drainage channels 101, so that the two sets of mounting mechanisms 200 are located on both sides of the axial direction of the multiple strip drainage channels 101 respectively.

[0065] Subsequently, the first semicircular plate 301 and the second semicircular plate 302 are placed on both sides of the protective tube 100, so that the two sets of T-shaped anti-detachment guide grooves 303 on the first semicircular plate 301 and the second semicircular plate 302 are respectively fitted onto the arc-shaped guide strips 202 of the two sets of mounting mechanisms 200. The connecting plates 304 on the first semicircular plate 301 and the second semicircular plate 302 are aligned with each other, and the first semicircular plate 301 and the second semicircular plate 302 are connected by multiple second bolts 305.

[0066] After the drainage mechanism 300 is installed, multiple strip drainage channels 101 are located within the annular water receiving space formed by the first semicircular plate 301 and the second semicircular plate 302, and the water receiving pipe 306 is located below the protective pipe 100.

[0067] When water accumulates in the inner cavity of the protective pipe 100, the water gathers to the bottom of the inner cavity of the protective pipe 100 under the action of gravity, and enters the annular water receiving space formed by the first semicircular plate 301 and the second semicircular plate 302 through the strip drainage channel 101 located in the low area.

[0068] The accumulated water entering the annular water receiving space flows downward along the inner sides of the first semicircular plate 301 and the second semicircular plate 302, and enters the water receiving pipe 306. The water receiving hopper 308 receives the accumulated water entering the water receiving pipe 306 and guides the accumulated water into the filter cylinder 309.

[0069] After the accumulated water enters the filter cylinder 309, it flows outward through the cylinder wall of the filter cylinder 309. The impurities carried in the accumulated water are blocked inside the filter cylinder 309, and the filtered water enters the water inlet pipe 306.

[0070] When the water level in the inlet pipe 306 is low, the float 312 is located at the lower part of the guide rod 311, and the arc-shaped side of the float 312 blocks the water inlet position of the drain hose 307. As the filtered water continuously enters the inlet pipe 306, the water level in the inlet pipe 306 rises, and the buoyancy of the water pushes the float 312 upward along the guide rod 311, causing the float 312 to gradually move away from the water inlet position of the drain hose 307.

[0071] After the drain hose 307 is opened, the water in the inlet pipe 306 is discharged outward through the drain hose 307. After the water is discharged, the water level in the inlet pipe 306 drops, and the float 312 moves downward along the guide rod 311 and blocks the water inlet position of the drain hose 307 again.

[0072] When the protective pipe 100 rotates circumferentially, the two sets of mounting mechanisms 200 rotate synchronously with the protective pipe 100. Due to the sliding fit between the T-shaped anti-detachment guide groove 303 and the arc-shaped guide strip 202, the drainage mechanism 300 can slide circumferentially relative to the two sets of mounting mechanisms 200.

[0073] Under the influence of gravity, the first semicircular plate 301 and the second semicircular plate 302 move along the arc-shaped guide strip 202, causing the water receiving pipe 306 to reposition itself below the protective pipe 100. At this time, the multiple strip-shaped drainage channels 101 remain within the annular water receiving space formed by the first semicircular plate 301 and the second semicircular plate 302, allowing the accumulated water in the protective pipe 100 to continue entering the drainage mechanism 300.

[0074] When the filter cartridge 309 needs backwashing after a period of use, the push plate 326 is inserted into the lower end of the piston rod 325, and the push plate 326 is moved back and forth. The push plate 326 drives the piston rod 325 and the piston plate 324 to move back and forth inside the piston cylinder 321. When the piston plate 324 moves downward, the volume of the space above the piston plate 324 increases, and outside air enters the piston cylinder 321 through the flushing medium inlet pipe 323.

[0075] When the piston plate 324 moves upward, it compresses the air in the piston cylinder 321. The air enters the hollow ring 333 through the horizontal pipe 332 and the vertical pipe 331 in sequence, and is blown by multiple nozzles 334 onto the outer circumferential surface of the filter cylinder 309, so that the debris attached to the cylinder wall and filter holes of the filter cylinder 309 is loosened or removed.

[0076] During the reciprocating movement of the piston plate 324, multiple vertical pipes 331 move synchronously with the piston plate 324, and drive the hollow ring 333 to move up and down along the filter cylinder 309, so that multiple nozzles 334 can rinse the filter cylinder 309 at different heights.

[0077] When backwashing with clean water is required, the flushing medium inlet pipe 323 is connected to an external clean water source, and the push plate 326 is moved back and forth. When the piston plate 324 moves downward, clean water enters the piston cylinder 321 through the flushing medium inlet pipe 323; when the piston plate 324 moves upward, clean water is sequentially transported through the horizontal pipe 332, the vertical pipe 331, and the hollow ring 333 to multiple nozzles 334, and sprayed by the multiple nozzles 334 onto the filter cylinder 309 to backwash the filter cylinder 309.

[0078] When it is necessary to remove the debris collected inside the filter cartridge 309, rotate the piston cylinder 321, causing the piston cylinder 321 to drive multiple cleaning brushes 340 to rotate. The multiple cleaning brushes 340 move along the inner wall of the filter cartridge 309 inside the filter cartridge 309 to scrub the inner wall of the filter cartridge 309.

[0079] Continue rotating the piston cylinder 321 to disengage the connecting ring 322 from the water inlet pipe 306. Then remove the piston cylinder 321 from below the water inlet pipe 306 to expose the lower part of the filter cylinder 309 and remove the debris collected inside the filter cylinder 309.

[0080] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water drainage device for the inner cavity of a cable protection pipe, for installation on the outside of a protection pipe (100), wherein the pipe wall of the protection pipe (100) has multiple strip-shaped drainage grooves (101) extending axially and spaced circumferentially, characterized in that, include: Two sets of installation mechanisms (200) are located on both sides of the axial direction of the multiple strip drainage channels (101). The installation mechanism (200) includes two semi-circular mounting rings (201) arranged on the outside of the protective pipe (100), and an arc-shaped guide strip (202) is provided on the semi-circular mounting ring (201). The drainage mechanism (300) includes a first semicircular plate (301) and a second semicircular plate (302). The first semicircular plate (301) and the second semicircular plate (302) form an annular water receiving space covering multiple strip drainage channels (101). Two sets of T-shaped anti-detachment guide grooves (303) are provided on both the first semicircular plate (301) and the second semicircular plate (302). The T-shaped anti-detachment guide grooves (303) are slidably engaged with the arc-shaped guide strips (202) of the two sets of installation mechanisms (200). A water receiving pipe (306) communicating with the annular water receiving space is connected to the first semicircular plate (301). A drain hose (307) is connected to the water receiving pipe (306). When the protective pipe (100) rotates circumferentially, the draining mechanism (300) can slide circumferentially relative to the protective pipe (100) and keep the water receiving pipe (306) below the protective pipe (100) under its own gravity.

2. The cable protection pipe internal water drainage device according to claim 1, characterized in that, The mounting mechanism (200) also includes: Multiple reinforcing plates (203) are disposed in the inner cavity of the protective pipe (100). The reinforcing plates (203) extend across the end area of ​​the corresponding strip drainage groove (101) along the axial direction of the protective pipe (100) to compensate for the decrease in pipe wall strength caused by the opening of the strip drainage groove (101). The side of the reinforcing plate (203) facing the inner wall of the protective pipe (100) is set as an arc surface, and threaded holes are respectively opened at both ends of the reinforcing plate (203). Multiple first bolts (204) pass through the semicircular mounting ring (201) and the protective tube (100) in sequence, and are threadedly connected to the corresponding reinforcing plate (203) so that the tube wall of the protective tube (100) is clamped between the semicircular mounting ring (201) and the reinforcing plate (203); Among them, two adjacent semicircular mounting rings (201) cooperate with each other to form a complete guide ring surrounding the protective tube (100), and two adjacent arc-shaped guide strips (202) together form a circular guide strip extending circumferentially along the protective tube (100).

3. The cable protection pipe internal water drainage device according to claim 1, characterized in that, The drainage mechanism (300) further includes: Four connecting plates (304) are respectively fixedly mounted on the first semicircular plate (301) and the second semicircular plate (302); Multiple second bolts (305) are respectively inserted into the corresponding connecting plates (304) to detachably connect the first semicircular plate (301) and the second semicircular plate (302).

4. The water drainage device for the inner cavity of the cable protection pipe according to claim 1, characterized in that, The drainage mechanism (300) further includes: A water receiving hopper (308) is installed inside the water receiving pipe (306) and located below the position where the water receiving pipe (306) communicates with the annular water receiving space; The filter cylinder (309) is fixedly connected to and communicates with the water receiving hopper (308) at its top, and is used to receive the accumulated water collected by the water receiving hopper (308), so that the accumulated water enters the water receiving pipe (306) after passing through the cylinder wall of the filter cylinder (309).

5. The cable protection pipe inner cavity water drainage device according to claim 4, characterized in that, The drainage mechanism (300) further includes: Multiple guide rods (311) are installed inside the water receiving pipe (306), and their upper ends are fixedly connected to the water receiving hopper (308); The float (312) is slidably connected to the plurality of guide rods (311) and has an arcuate side corresponding to the inner wall of the water inlet pipe (306) and the water inlet position of the drain hose (307).

6. The cable protection pipe inner cavity water drainage device according to claim 4, characterized in that, The drainage mechanism (300) further includes: A piston cylinder (321) is located below the water inlet pipe (306), and a connecting ring (322) is installed on its top. The connecting ring (322) is threadedly connected to the lower part of the water inlet pipe (306). A flushing medium input pipe (323) is installed on the side of the piston cylinder (321); Piston plate (324) is slidably disposed inside piston cylinder (321), and piston rod (325) is installed at its bottom. The push plate (326) is detachably inserted into the lower end of the piston rod (325).

7. The cable protection pipe inner cavity water drainage device according to claim 6, characterized in that, The drainage mechanism (300) further includes a flushing assembly (330), which includes: Multiple vertical tubes (331) are fixedly connected at their lower ends to the top surface of the piston plate (324), and extend upward through the top surface of the piston cylinder (321) and are slidably connected to the piston cylinder (321); Multiple horizontal tubes (332) are respectively disposed inside the piston cylinder (321), and each horizontal tube (332) is connected to the corresponding vertical tube (331); A hollow ring (333) is disposed inside the water inlet pipe (306) and sleeved on the outside of the filter cylinder (309). The hollow ring (333) is fixedly connected to and communicates with the upper ends of multiple vertical pipes (331). Multiple nozzles (334) are arranged at intervals along the circumference of the hollow ring (333) on the inner wall of the hollow ring (333) and facing the outer circumferential surface of the filter cartridge (309).

8. The cable protection pipe inner cavity water drainage device according to claim 6, characterized in that, The drainage mechanism (300) further includes: Multiple cleaning brushes (340) are fixedly disposed on the top surface of the piston cylinder (321); When the piston cylinder (321) rotates relative to the water inlet pipe (306) to release the threaded connection between the connecting ring (322) and the water inlet pipe (306), the plurality of cleaning brushes (340) rotate synchronously with the piston cylinder (321) and move along the inner wall of the filter cylinder (309).

9. The cable protection pipe inner cavity water drainage device according to claim 6, characterized in that, The push plate component (326) includes: A horizontal plate (3261) has a sliding groove (3262) on its side. The lower end of the piston rod (325) is inserted into the sliding groove (3262). One side of the horizontal plate (3261) is set as an arc-shaped surface that matches the outer circumferential surface of the protective tube (100). A strip-shaped positioning groove (3263) is formed through the horizontal plate (3261) to position the processing position of the strip-shaped drainage groove (101); Two positioning holes (3264) are formed through the horizontal plate (3261) to position the machining position of the mounting hole (102) on the protective tube (100).

Images