A dredge overflow tube

Abstract

The application relates to the technical field of dredging engineering equipment, and discloses a dredger overflow cylinder, which comprises a base, a lifting cylinder is arranged in the base in a sliding mode, three slide rods are fixedly arranged at the convex edges of the base, the top of the lifting cylinder is funnel-shaped, the top of the slide rod penetrates the top funnel of the lifting cylinder and is fixedly installed with a triangular platform, and a hydraulic oil cylinder is fixedly installed in the middle of the triangular platform. The dredger overflow cylinder solves the problems that, in the prior art, when a large amount of low-concentration mud and sand mixture is discharged from the cabin through the overflow cylinder, a large amount of turbid liquid impacts downward based on the height of the overflow cylinder, a large impact force exists, and the turbid liquid flowing into the overflow cylinder also has a large water pressure, so that, during the discharge of the turbid liquid, the impact force and the water pressure of the turbid liquid in the overflow cylinder can only be discharged and cannot be well utilized, and energy is wasted.

Description

Technical Field

[0001] This invention relates to the field of dredging equipment technology, specifically to an overflow cylinder for a trailing suction hopper dredger. Background Technology

[0002] During the construction process of the trailing suction hopper dredger, centrifugal pumps are used to suck up mud and sand from the seabed and put them into the mud tank for sedimentation. The low-concentration mud and sand mixture is discharged through the overflow pipe, thereby increasing the mud and sand concentration in the tank and maximizing the ship's loading capacity.

[0003] Because the sludge cannot settle sufficiently during the loading process of a trailing suction hopper dredger, turbid liquid will form at the top of the sludge tank and be discharged from the bottom of the tank through the overflow pipe. In the existing technology, when a large amount of low-concentration mud and sand mixture is discharged from the sludge tank through the overflow pipe, a large amount of turbid liquid impacts downward due to the height of the overflow pipe itself, resulting in a large impact force. At the same time, based on the depth of the turbid liquid flowing into the overflow pipe itself, there is also a large water pressure. Therefore, during the discharge of turbid liquid, the impact force and water pressure of the turbid liquid inside the overflow pipe can only be discharged and cannot be effectively utilized, resulting in energy waste. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an overflow tube for a trailing suction hopper vessel, which solves the problems mentioned in the background.

[0005] This invention provides the following technical solution: an overflow cylinder for a trailing suction hopper, comprising: a base, a lifting cylinder slidably disposed inside the base, three sliding rods fixedly disposed on the outer edge of the base, the top of the lifting cylinder being funnel-shaped, the top of each sliding rod penetrating the funnel extension surface at the top of the lifting cylinder and fixedly mounted with a triangular platform, a hydraulic cylinder fixedly mounted in the middle of the triangular platform, a cylinder sleeve of the hydraulic cylinder located inside the lifting cylinder near the top, a bracket fixedly mounted on the outer edge of the cylinder sleeve, and the bracket fixedly mounted on the inner wall of the lifting cylinder. A support rod is fixedly installed at the bottom of the triangular platform, and a brush holder is fixedly installed at the bottom end of the support rod. A waterproof shell is fixedly installed below the bottom support of the hydraulic cylinder, and a water pressure wheel is provided at the bottom of the waterproof shell. A pressure ring is fixedly installed on the inner wall of the lifting cylinder, and the position of the pressure ring corresponds to the position of the water pressure wheel. A sludge scraping mechanism is installed on the top of the base through a flange. An exhaust mechanism is provided inside the lifting cylinder. The top of the exhaust mechanism passes through the triangular platform and is slidably connected to it, and the bottom of the exhaust mechanism passes through the pressure ring and is fixedly installed to it.

[0006] Preferably, a centrifugal guide core is installed at the bottom of the hydraulic impeller, the centrifugal guide core has a rhomboid cross-section, a centrifugal ring is provided below the pressure ring, and the shape of the inner wall of the centrifugal ring is adapted to the conical shape of the lower half of the centrifugal guide core.

[0007] Preferably, the height of the support rod corresponds to the height of the hydraulic cylinder sleeve, and the height of the exhaust mechanism is twice the height of the hydraulic cylinder sleeve.

[0008] Preferably, there are four support rods, which correspond to the brush holders installed on the four support rods. The brush holders are located in the gaps of the brackets and overlap with the inner wall of the lifting cylinder. The outer edge of the brush holders is provided with bristles.

[0009] Preferably, the portion of the waterproof housing that protrudes from the outer edge of the hydraulic cylinder is frustum-shaped, and a water turbine generator is installed inside the waterproof housing.

[0010] Preferably, the hydraulic roller includes a guide shaft, a rotating shaft is rotatably mounted in the middle of the guide shaft, the top of the rotating shaft passes through and is installed inside the waterproof shell, a guide vane is provided on the outer edge of the guide shaft, the guide vane is fixedly mounted on the pressure ring, a rotating wheel is installed at the bottom end of the rotating shaft passing through the guide shaft, the rotating wheel is conical, and the rotating vane is provided on the conical side of the guide shaft.

[0011] Preferably, the pressure ring has a flow guide groove in the middle, and the shape of the flow guide groove is adapted to the shape of the water pressure wheel.

[0012] Preferably, the exhaust mechanism includes an exhaust pipe, the bottom of which passes through the booster ring, and a guide plug is slidably provided on its inner wall. An intake support is fixedly installed at the bottom end of the guide plug, and a sealing plug is provided at the bottom end of the intake support. A float is integrally provided at the bottom of the sealing plug, and the cross-sectional shape of the sealing plug corresponds to the cross-sectional shape of the inner wall of the exhaust pipe. An intake groove is provided on the side of the intake support.

[0013] Preferably, the sludge scraping mechanism includes a base, a connecting flange at the bottom of the base, a rotating ring rotatably mounted on the top of the base, a ring-shaped toothed bottom of the rotating ring, a roller and a worm gear inside the base, the roller being linked to the toothed toothed worm gear, the outer edge of the roller being rolledly connected to the outer edge of the lifting cylinder, and a scraper fixedly mounted on the top of the rotating ring, the top of the scraper being triangularly conical, the scraper being close to the lifting cylinder on the side closest to it, and its shape being adapted to the curvature of the outer edge of the lifting cylinder.

[0014] Preferably, one end of the roller shaft is extended and fixedly sleeved with a first gear, the outer edge of the first gear meshes with a second gear, and the second gear is fixedly sleeved on one end of the extended worm shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The overflow cylinder of this trailing suction hopper is equipped with a hydraulic roller installed at the bottom of the hydraulic cylinder. When the turbid liquid enters the lifting cylinder, it has sufficient height to provide water pressure and water flow impact force, which causes the hydraulic roller to rotate under the influence of water pressure and water flow impact force, thereby starting the generator in the waterproof shell to start running, saving energy consumption for the operation of the trailing suction hopper, and making full use of the energy contained in the turbid liquid during discharge.

[0017] 2. The overflow cylinder of this trailing suction hopper vessel is equipped with a brush frame. As the hydraulic cylinder operates, the lifting cylinder is dynamically adjusted according to the water level of the turbid liquid in the mud tank. During the adjustment of the lifting cylinder, the brush frame can wash the inner wall back and forth to prevent the adhesion of light mud in the turbid liquid. This ensures that the flow rate of the turbid liquid discharged from the overflow cylinder is normal and avoids the situation where the inner wall of the lifting cylinder is covered with a lot of mud, which reduces the flow rate.

[0018] 3. The overflow cylinder of this trailing suction hopper is equipped with an exhaust mechanism and a centrifugal guide core. The turbid liquid that reaches the centrifugal guide core is dispersed in all directions under the influence of its rotational force and begins to rotate to generate centrifugal force. The centrifugal force is used to gather the bubbles generated in the turbid liquid due to the turbulence effect and form cavities. Then, under the pressure of the turbid liquid itself, it is discharged through the exhaust mechanism, reducing the bubble content of the discharged turbid liquid so that it can sink to the bottom and prevent the turbid liquid from floating on the water surface and polluting the environment.

[0019] 4. The overflow cylinder of this trailing suction hopper is equipped with a sludge scraping mechanism. By utilizing the movement of the lifting cylinder when it rises or falls, the sludge scraping mechanism rotates around the lifting cylinder using its internal linkage mechanism, thereby scraping away the sludge that surges onto the surface of the lifting cylinder. This reduces the erosion of the sealing plug at the connection between the lifting cylinder and the base caused by the sludge, thus improving its sealing effect. At the same time, it can prevent the sludge from adhering to the surface of the lifting cylinder and causing movement obstruction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the hydraulic impeller structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the exhaust mechanism structure of the present invention;

[0025] Figure 6 This is a partial cross-sectional schematic diagram of the sludge scraping mechanism of the present invention;

[0026] Figure 7This is a schematic diagram of the linkage structure of the sludge scraping mechanism of the present invention.

[0027] In the diagram: 1. Base; 2. Lifting cylinder; 3. Slide rod; 4. Triangular platform; 5. Hydraulic cylinder; 6. Support rod; 7. Brush holder; 8. Bracket; 9. Waterproof shell; 10. Hydraulic roller; 101. Guide shaft; 102. Rotating shaft; 103. Guide vane; 104. Rotating wheel; 105. Rotating vane; 11. Pressure ring; 12. Guide groove; 13. Sludge scraping mechanism; 131. Base; 132. Roller; 133. Worm gear; 134. Rotating ring; 135. Gear; 136. Scraper; 137. First gear; 138. Second gear; 14. Exhaust mechanism; 141. Air outlet pipe; 142. Guide plug; 143. Air inlet support; 144. Sealing plug; 145. Float; 146. Air inlet groove; 15. Centrifugal guide core; 16. Centrifugal ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-4 An overflow chute for a trailing suction hopper includes: a base 1; a lifting cylinder 2 slidably disposed inside the base 1; three sliding rods 3 fixedly disposed on the outer edge of the base 1; the top of the lifting cylinder 2 is funnel-shaped; the top of the sliding rods 3 penetrates the funnel-shaped extension surface at the top of the lifting cylinder 2 and is fixedly mounted on a triangular platform 4; a hydraulic cylinder 5 is fixedly mounted in the middle of the triangular platform 4; the cylinder sleeve of the hydraulic cylinder 5 is located inside the lifting cylinder 2 near the top; a bracket 8 is fixedly mounted on the outer edge of the cylinder sleeve of the hydraulic cylinder 5; the bracket 8 is fixedly mounted on the inner wall of the lifting cylinder 2; and the bottom of the triangular platform 4 is fixedly mounted on... A support rod 6 is installed, and a brush holder 7 is fixedly installed at the bottom end of the support rod 6. A waterproof shell 9 is fixedly installed below the bottom bracket 8 of the hydraulic cylinder 5. A water pressure wheel 10 is set at the bottom of the waterproof shell 9. A pressure ring 11 is fixedly installed on the inner wall of the lifting cylinder 2. The position of the pressure ring 11 corresponds to the position of the water pressure wheel 10. A mud scraping mechanism 13 is installed on the top of the base 1 through a flange. An exhaust mechanism 14 is set inside the lifting cylinder 2. The top of the exhaust mechanism 14 passes through the triangular platform 4 and is slidably connected to it. The bottom of the exhaust mechanism 14 passes through the pressure ring 11 and is fixedly installed to it.

[0030] Among them, a centrifugal guide core 15 is installed at the bottom of the water pressure wheel 10. The centrifugal guide core 15 has a rhomboid cross section. A centrifugal ring 16 is set below the pressure ring 11. The shape of the inner wall of the centrifugal ring 16 is adapted to the cone shape of the lower half of the centrifugal guide core 15. By setting the centrifugal guide core 15, the centrifugal force is used to gather the bubbles generated in the turbid liquid due to the turbulence effect and form a cavity. Then, under the pressure of the turbid liquid itself, it is discharged through the exhaust mechanism 14, reducing the bubble content of the discharged turbid liquid.

[0031] Among them, the height of the support rod 6 corresponds to the height of the cylinder sleeve of the hydraulic cylinder 5, the lifting height of the lifting cylinder 2 depends on the cylinder sleeve of the hydraulic cylinder 5, and the height of the exhaust mechanism 14 is twice the height of the cylinder sleeve of the hydraulic cylinder 5. By setting the height of the support rod 6 accordingly, the support rod 6 can wash the inner wall of the lifting cylinder 2 to the maximum extent. At the same time, the top of the exhaust mechanism 14 is always kept above the liquid surface to avoid the entry of turbid liquid and blockage.

[0032] There are four support rods 6, which correspond to the brush holders 7 installed on the four support rods 6. The brush holders 7 are located in the gaps of the brackets 8 and overlap with the inner wall of the lifting cylinder 2. The outer edge of the brush holders 7 is provided with bristles. By setting four corresponding support rods 6, the support rods 6 can avoid the brackets 8 when washing the inner wall of the lifting cylinder 2, and fully wash the inner wall of the lifting cylinder 2 without affecting the operation of the lifting cylinder 2.

[0033] Among them, the part of the top of the waterproof shell 9 that protrudes from the outer edge of the hydraulic cylinder 5 is truncated into a frustum shape. A water turbine generator is installed inside the waterproof shell 9. The inclined side of the frustum guides the water flow that is impacting the waterproof shell 9, deflects the impact force of the turbid liquid on the waterproof shell 9, and at the same time allows the turbid liquid to maintain a certain impact force and fall on the water pressure wheel 10.

[0034] The hydraulic turbine 10 includes a guide shaft 101, a rotating shaft 102 rotatably mounted in the middle of the guide shaft 101, the top of the rotating shaft 102 penetrating and installed inside the waterproof shell 9, a guide vane 103 provided on the outer edge of the guide shaft 101, the guide vane 103 fixedly mounted on the booster ring 11, and a turbine 104 mounted on the bottom end of the rotating shaft 102 penetrating the guide shaft 101. The turbine 104 is conical, and a rotating vane 105 is provided on the conical side of the guide shaft 101. By setting the guide vane 103, the impacting turbid liquid is deflected, causing it to rotate, thereby driving the turbine 104 to rotate and providing power to the hydro-generator.

[0035] The pressure ring 11 has a guide groove 12 in the middle. The shape of the guide groove 12 is adapted to the shape of the hydraulic impeller 10. By adding the pressure ring 11, the falling turbid liquid must impact the impeller 104 before it can be discharged, thus making full use of the energy contained in the turbid liquid during discharge and saving energy consumption during the operation of the trailing suction hopper.

[0036] The exhaust mechanism 14 includes an exhaust pipe 141. After the bottom of the exhaust pipe 141 passes through the pressure ring 11, a guide plug 142 is slidably provided on its inner wall. An air intake support 143 is fixedly installed at the bottom end of the guide plug 142. A sealing plug 144 is provided at the bottom end of the air intake support 143. A float 145 is integrally provided at the bottom of the sealing plug 144. The cross-sectional shape of the sealing plug 144 corresponds to the cross-sectional shape of the inner wall of the exhaust pipe 141. An air intake groove 146 is provided on the side of the air intake support 143. The exhaust pipe 141 connects the bottom of the water pressure wheel 10 to the top of the overflow cylinder, so that the bubbles generated by the turbulence effect of the turbid liquid can be discharged. At the same time, the float 145 can directly block the exhaust pipe 141 when the water flow is high, preventing the turbid liquid from entering the exhaust pipe 141 and causing blockage.

[0037] The sludge scraping mechanism 13 includes a base 131, a connecting flange at the bottom of the base 131, a rotating ring 134 rotatably mounted on the top of the base 131, and a ring-shaped tooth 135 at the bottom of the rotating ring 134. Inside the base 131 are rollers 132 and a worm gear 133. The rollers 132 are linked to the tooth 135 via the worm gear 133. The outer edge of the rollers 132 is rolledly connected to the outer edge of the lifting cylinder 2. A scraper 136 is fixedly mounted on the top of the rotating ring 134. The top of the scraper 136 is triangular and pointed, and the scraper 136 is close to the side of the lifting cylinder 2, and its shape matches the curvature of the outer edge of the lifting cylinder 2. By setting up the sludge scraping mechanism 13, the lifting cylinder 2 moves when it rises or falls, allowing the sludge scraping mechanism 13 to rotate around the lifting cylinder 2 via its internal linkage mechanism, thereby scraping away the sludge surging onto the surface of the lifting cylinder 2.

[0038] Among them, one end of the central shaft of the roller 132 is extended and fixedly sleeved with a first gear 137, and the outer edge of the first gear 137 is meshed with a second gear 138. The second gear 138 is fixedly sleeved on one end of the extended central shaft of the worm 133. By setting the first gear 137 and the second gear 138, the force generated by the rise or fall of the lifting cylinder 2 is converted, so that the structure in the mud scraping mechanism 13 can scrape around the lifting cylinder 2.

[0039] Working principle: When using the overflow cylinder to discharge turbid liquid from the mud tank of the trailing suction hopper, the hydraulic cylinder 5 is first activated according to the sedimentation situation, so that the top of the lifting cylinder 2 can sink to the sedimentation separation point between the turbid liquid and the mud. At this time, the turbid liquid will directly flow into the interior of the lifting cylinder 2. During the descent, the impact force of the turbid liquid increases with the change in height, and then falls on the hydraulic roller 10. Under the guidance of the structure on the hydraulic roller 10, the hydraulic roller 10 is pushed to rotate. Then, the turbid liquid passing through the hydraulic roller 10 falls on the centrifugal guide core 15 to start centrifugal separation of air bubbles. Then, the venting mechanism 14 is used to discharge the separated air bubbles. The generator inside the waterproof shell 9 is started to run, making full use of the energy contained in the turbid liquid during the discharge. At the same time, with the dynamic adjustment of the height of the lifting cylinder 2 according to the turbid liquid level, the brush frame 7 can wash the inner wall of the lifting cylinder 2 back and forth. In addition, the sludge scraping mechanism 13 moves with the lifting cylinder 2, and its structure begins to scrape around the lifting cylinder 2 to remove the sludge adsorbed on the surface of the lifting cylinder 2.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overflow chute for a trailing suction hopper dredger, characterized in that, include: A base (1) is provided with a lifting cylinder (2) slidably mounted inside the base (1). Three sliding rods (3) are fixedly mounted on the outer edge of the base (1). The top of the lifting cylinder (2) is funnel-shaped. The top of the sliding rods (3) penetrates the funnel extension surface at the top of the lifting cylinder (2) and is fixedly mounted on a triangular platform (4). A hydraulic cylinder (5) is fixedly mounted in the middle of the triangular platform (4). The cylinder sleeve of the hydraulic cylinder (5) is located inside the lifting cylinder (2) near the top. A bracket (8) is fixedly mounted on the outer edge of the cylinder sleeve of the hydraulic cylinder (5). The bracket (8) is fixedly mounted on the inner wall of the lifting cylinder (2). A support rod (6) is fixedly mounted on the bottom of the triangular platform (4). A brush holder (7) is fixedly installed at the bottom end of the support rod (6). A waterproof shell (9) is fixedly installed below the bottom support (8) of the hydraulic cylinder (5). A water pressure wheel (10) is provided at the bottom of the waterproof shell (9). A pressure ring (11) is fixedly installed on the inner wall of the lifting cylinder (2). The position of the pressure ring (11) corresponds to the position of the water pressure wheel (10). A mud scraping mechanism (13) is installed on the top of the base (1) through a flange. An exhaust mechanism (14) is provided inside the lifting cylinder (2). The top of the exhaust mechanism (14) passes through the triangular platform (4) and is slidably connected to it. The bottom of the exhaust mechanism (14) passes through the pressure ring (11) and is fixedly installed to it. The bottom of the hydraulic impeller (10) is equipped with a centrifugal guide core (15), the centrifugal guide core (15) has a rhomboid cross section, and a centrifugal ring (16) is provided below the pressure ring (11). The shape of the inner wall of the centrifugal ring (16) is adapted to the conical shape of the lower half of the centrifugal guide core (15).

2. The overflow chute of a trailing suction hopper vessel according to claim 1, characterized in that, The height of the support rod (6) corresponds to the height of the cylinder sleeve of the hydraulic cylinder (5), and the height of the exhaust mechanism (14) is twice the height of the cylinder sleeve of the hydraulic cylinder (5).

3. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, There are four support rods (6), which correspond to the brush holders (7) installed on the four support rods (6). The brush holders (7) are located in the gaps of the bracket (8) and overlap with the inner wall of the lifting cylinder (2). The outer edge of the brush holders (7) is provided with bristles.

4. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, The part of the top of the waterproof shell (9) that protrudes from the outer edge of the hydraulic cylinder (5) is truncated into a frustum shape, and a water turbine generator is installed inside the waterproof shell (9).

5. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, The hydraulic impeller (10) includes a guide shaft (101), a rotating shaft (102) is rotatably mounted in the middle of the guide shaft (101), the top of the rotating shaft (102) passes through and is installed inside the waterproof shell (9), a guide vane (103) is provided on the outer edge of the guide shaft (101), the guide vane (103) is fixedly mounted on the booster ring (11), the bottom end of the rotating shaft (102) passes through the guide shaft (101) and is mounted with a rotating wheel (104), the rotating wheel (104) is conical, and a rotating vane (105) is provided on the conical side of the guide shaft (101).

6. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, The pressure ring (11) has a flow guide groove (12) in the middle, and the shape of the flow guide groove (12) is adapted to the shape of the water pressure wheel (10).

7. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, The exhaust mechanism (14) includes an exhaust pipe (141). The bottom of the exhaust pipe (141) passes through the booster ring (11), and a guide plug (142) is slidably provided on its inner wall. An intake support (143) is fixedly installed at the bottom end of the guide plug (142). A sealing plug (144) is provided at the bottom end of the intake support (143). A float (145) is integrally provided at the bottom of the sealing plug (144), and the cross-sectional shape of the sealing plug (144) corresponds to the cross-sectional shape of the inner wall of the exhaust pipe (141). An intake groove (146) is opened on the side of the intake support (143).

8. The overflow chute of a trailing suction hopper dredger according to claim 1, characterized in that, The sludge scraping mechanism (13) includes a base (131), a connecting flange is provided at the bottom of the base (131), a rotating ring (134) is rotatably provided at the top of the base (131), and a toothed ring (135) is provided at the bottom of the rotating ring (134) in an annular shape. A roller (132) and a worm gear (133) are provided inside the base (131). The roller (132) is linked with the toothed ring (135) through the worm gear (133). The outer edge of the roller (132) is tumblingly connected to the outer edge of the lifting cylinder (2). A scraper (136) is fixedly provided at the top of the rotating ring (134). The top of the scraper (136) is triangular and pointed. The scraper (136) is close to the side of the lifting cylinder (2) and its shape is adapted to the curvature of the outer edge of the lifting cylinder (2).

9. An overflow chute for a trailing suction hopper dredger according to claim 8, characterized in that, One end of the central shaft of the roller (132) is extended and fixedly sleeved with a first gear (137), and the outer edge of the first gear (137) meshes with a second gear (138), which is fixedly sleeved on one end of the extended central shaft of the worm (133).

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