Variable-angle necking device for sludge discharge pipeline

Abstract

The utility model relates to an angle-variable necking device for a sludge discharge pipeline. Comprising a fixed pipe section and a rotary pipe section, a rotary adjusting assembly which drives the rotary pipe section to rotate and adopts a hand wheel as input is installed between the front end of the fixed pipe section and the rear end of the rotary pipe section, a ball sleeve is arranged at the front end of the rotary pipe section, and a ball head with a through hole is installed in the ball sleeve through a fixed assembly. The fixing assembly is detachably connected with the ball sleeve, a swing pipe section is arranged on the front portion of the ball head, a conical spray pipe is installed at the front end of the swing pipe section, and a hanging ring is arranged in the middle of the outer wall of the conical spray pipe. The variable-angle necking device for the mud discharging pipeline is reasonable in structural design and convenient to operate, the spraying direction of mud at the tail end can be adjusted and set, and the uniformity of the mud discharged to different positions in a hydraulic reclamation area is improved by adjusting the spraying angle of the necking device.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging facilities, and in particular relates to a variable angle shrinking device for a mud discharge pipeline. Background Art

[0002] In dredging construction projects, dredged mud is usually transported through mud discharge pipelines. The cutter suction dredger lowers the cutter arm in the dredging construction waters and uses the cutter device to excavate the bottom mud surface. The mud pump equipped on the ship extracts the bottom mud and transports it to shore through mud discharge pipelines (self-floating mud discharge pipelines on the water or underwater mud discharge pipelines). When a suction dredger is used for dredging construction, the mud obtained by the dredging is stored in the ship's mud tank. When the tank is full, it will sail to the shore and unload the mud through mud discharge pipelines. In general, the mud needs to be discharged into the filling area, and the water in the mud in the filling area is discharged from the drain port to form land.

[0003] In the prior art, a tapered nozzle is usually installed at the end of the mud discharge pipeline. The tapered nozzle can increase the pressure of the mud injection and increase the distance of the mud injection. The existing tapered device is a fixed device, and the direction of the mud injection is fixed and cannot be changed. In this way, the landing position of the mud injection is fixed, which leads to the problem of mud accumulation. It can be imagined that when the mud is discharged into the filling area, the mud should be discharged evenly to each area as much as possible to avoid concentrated accumulation, which is conducive to drainage and the formation of a filling land with uniform thickness. In order to solve the above problems, in the existing construction process, it is usually necessary to use auxiliary machinery and tools to spread the mud in the filling area, which is more labor-intensive and prolongs the construction period.

[0004] By making the direction of the mud injection at the end of the mud discharge pipeline adjustable, it will help alleviate the above problems. As mentioned above, the angle of the existing shrinking device at the end of the mud discharge pipeline cannot be changed, so it is necessary to develop and design a new variable angle shrinking device. Utility Model Content

[0005] The utility model provides a variable angle necking device for a mud discharge pipeline with a reasonable structural design to solve the technical problems existing in the known technology, so that the direction of the end mud injection can be adjusted and set, and the uniformity of mud discharge to different positions in the filling area is improved by adjusting the injection angle of the necking device.

[0006] The utility model adopts the following technical scheme to solve the technical problems existing in the known technology: a variable angle shrinking device for a mud discharge pipeline, comprising a fixed pipe section and a rotating pipe section, a rotating adjustment component for driving the rotating pipe section to rotate and using a hand wheel as an input is installed between the front end of the fixed pipe section and the rear end of the rotating pipe section, a ball sleeve is provided at the front end of the rotating pipe section, a ball head with a through hole is installed in the ball sleeve using a fixed component, the fixed component and the ball sleeve are detachably connected, a swing pipe section is provided at the front part of the ball head, a conical nozzle is installed at the front end of the swing pipe section, and a lifting ring is provided in the middle part of the outer wall of the conical nozzle.

[0007] Preferably: the slewing adjustment assembly includes a shell, a driving box is provided on the side wall of the shell, a worm wheel with a flow window in the middle is installed in the shell, a slewing ring is fixedly installed in the front of the worm wheel, a worm connected to the worm wheel is installed in the driving box, and a handwheel is installed at the outer end of the worm; the front end of the fixed pipe section is fixedly connected to the rear part of the shell, and the rear end of the slewing pipe section is fixedly connected to the slewing ring.

[0008] Preferably: a front flange of the ball sleeve is provided at the front end of the ball sleeve, the fixing assembly includes a fixing sleeve for pressing and fixing the ball head, a rear flange of the fixing sleeve is provided at the rear end of the fixing sleeve, and the front flange of the ball sleeve and the rear flange of the fixing sleeve are fixedly connected by bolts.

[0009] Preferably, a swing section front flange is provided at the front end of the swing pipe section, a nozzle rear flange is provided at the rear end of the conical nozzle, and the swing section front flange and the nozzle rear flange are fixedly connected by bolts.

[0010] Preferably, a rotary section rear flange is provided at the rear end of the rotary pipe section, and the rotary section rear flange is fixedly connected to the rotary ring by bolts.

[0011] Preferably: a fixed section rear flange is provided at the rear end of the fixed pipe section, and a fixed section front flange is provided at the front end; the fixed section front flange is fixedly connected to the rear part of the shell by bolts; reinforcing ribs are provided between the rear end of the fixed pipe section and the fixed section rear flange, and between the front end of the fixed pipe section and the fixed section front flange.

[0012] The advantages and positive effects of the utility model are:

[0013] The utility model provides a variable angle necking device for a mud discharge pipeline with a reasonable structural design. Compared with the existing fixed necking nozzle device, the necking device in the utility model installs a ball head at the rear end of the conical nozzle and installs the ball head in a ball sleeve by using a fixed component, thereby realizing the technical effect of universally adjusting the injection direction of the conical nozzle by loosening and tightening the fixed component at the front end of the ball sleeve and rotating the ball head in the ball sleeve. By adjusting the injection angle of the necking device, the uniformity of mud discharge to different positions in the filling area is effectively improved.

[0014] By installing a swivel adjustment component driven by a handwheel input between the fixed pipe section and the swivel pipe section, the swivel drive adjustment effect of the swivel pipe section and the conical nozzle at its front end is achieved. In this way, when the necking device is in the mud spraying state, the swivel adjustment component can be used to drive the conical nozzle to swing left and right, and the mud spraying direction can be adjusted in an online adjustment manner, further improving the uniformity of mud discharge to different positions in the filling area. When the variable angle necking device in the utility model is applied to the mud discharge pipeline of dredging construction, the mud can be sprayed and discharged to different positions in the filling area, which can reduce the operation of using auxiliary machinery to spread the mud in the later stage to a certain extent, reduce the consumption of manpower, and shorten the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a main structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the fixed pipe section and the rotary adjustment component.

[0017] In the figure:

[0018] 1. Rear flange of fixed section; 2. Reinforcing rib plate; 3. Fixed pipe section; 4. Front flange of fixed section; 5. Rotation adjustment assembly; 5-1. Housing; 5-2. Rotation ring; 5-3. Worm gear; 5-4. Drive box; 5-5. Worm; 6. Rear flange of rotary section; 7. Hand wheel; 8. Rotation pipe section; 9. Ball head; 10. Rear flange of fixed sleeve; 11. Front flange of swing section; 12. Lifting ring; 13. Ball sleeve; 14. Front flange of ball sleeve; 15. Fixed sleeve; 16. Swing pipe section; 17. Rear flange of nozzle; 18. Conical nozzle. DETAILED DESCRIPTION

[0019] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0020] See also Figure 1 The utility model of the variable angle shrinking device for mud discharge pipeline comprises a fixed pipe section 1 and a rotating pipe section 8. A rotating adjustment component 5 is installed between the front end of the fixed pipe section 1 and the rear end of the rotating pipe section 8. The rotating adjustment component 5 is driven by a hand wheel 7 as an input. When the hand wheel 7 inputs a positive or reverse drive to the rotating adjustment component 5, the rotating pipe section 8 and its attached parts rotate forward or reverse.

[0021] A ball sleeve 13 is provided at the front end of the rotating pipe section 8, and a ball head 9 with a through hole is installed in the ball sleeve 13 by using a fixing assembly, and the fixing assembly and the ball sleeve 13 are detachably connected. A swing pipe section 16 is provided at the front of the ball head 9, and a conical nozzle 18 is installed at the front end of the swing pipe section 16, and a lifting ring 12 is provided in the middle of the outer wall of the conical nozzle 18.

[0022] The ball sleeve 13 and the ball head 9 together form a universal structure. When the fixing assembly is loosened to release the pressing and fixing effect on the ball head 9, the ball head 9 can be rotated to achieve arbitrary adjustment of the injection direction of the conical nozzle 18. After adjusting to a suitable angle position, the fixing assembly is tightened again to fix the ball head 9 in the ball sleeve 13.

[0023] See also Figure 2 , we can see that:

[0024] The slewing regulating assembly 5 comprises a housing 5-1, a driving box 5-4 is arranged on the side wall of the housing 5-1, a worm wheel 5-3 with a flow window in the middle is installed in the housing 5-1, a slewing ring 5-2 is fixedly installed in the front of the worm wheel 5-3, a worm 5-5 connected with the worm wheel 5-3 is installed in the driving box 5-4, and a hand wheel 7 is installed at the outer end of the worm 5-5. As shown in the figure, the front of the housing 5-1 is open, the worm wheel 5-3 and the slewing ring 5-2 are both located inside the housing 5-1, the worm wheel 5-3 is fixed inside the housing 5-1 by a snap ring, so that the worm wheel 5-3 can only slew and cannot be displaced along the axial direction, the slewing ring 5-2 is fixedly connected with the worm wheel 5-3 by a plurality of bolts, so that the slewing ring 5-2 and the worm wheel 5-3 rotate synchronously, and a flow window is also arranged at the rear of the housing 5-1.

[0025] The front end of the fixed pipe section 3 is fixedly connected to the rear of the housing 5-1, and the rear end of the swivel pipe section 8 is fixedly connected to the swivel ring 5-2. Therefore, the mud entering the fixed pipe section 3 passes through the flow window in the middle of the housing 5-1 and the worm gear 5-3 and enters the swivel pipe section 8. In this embodiment, a sealing strip can be installed on the outer wall of the swivel ring 5-2 to reduce the mud leakage at this position. The sealing strip is pressed between the housing 5-1 and the swivel ring 5-2 to close the gap at this position. However, it can be imagined that the variable angle necking device is usually set inside the filling area, so even if there is a certain mud leakage problem, it does not affect the injection and discharge of the mud.

[0026] As shown in the figure, when the variable angle necking device is in use, the drive box 5-4 and the hand wheel 7 of the rotary adjustment component 5 are located directly above. This has the advantage that the mud in the device passes below, which can prevent a large amount of mud and sand from entering the operating area of ​​the worm gear assembly and avoid jamming problems.

[0027] As shown in the figure, a front flange 14 of the ball sleeve is provided at the front end of the ball sleeve 13, and the fixing assembly includes a fixing sleeve 15 for pressing and fixing the ball head 9, and a fixing sleeve rear flange 10 is provided at the rear end of the fixing sleeve 15. The front flange 14 of the ball sleeve and the fixing sleeve rear flange 10 are fixedly connected by bolts, and a sealing ring can be provided between the two to improve the sealing of the connection position. When it is necessary to adjust the injection direction of the conical nozzle 18, loosen the bolts to temporarily release the fixing effect of the fixing assembly on the ball head 9, and shift the conical nozzle 18 to adjust the injection angle. During the angle adjustment process, the ball head 9 rotates in the ball sleeve 13. When the injection angle is adjusted to a suitable level, tighten the bolts again to allow the fixing assembly to press and fix the ball head 9 again.

[0028] As mentioned above, a lifting ring 12 is provided in the middle of the outer wall of the conical nozzle 18, and its function is as follows: since the conical nozzle 18 is usually heavy, if the conical nozzle 18 is lifted by manpower during the angle adjustment operation, the adjustment operation will be labor-intensive. At this time, a small crane or other facilities can be used to suspend, lift, and lower the conical nozzle 18 through the lifting ring 12, which can reduce the workload of the adjustment operation and avoid operational hazards caused by the free fall and swing of the conical nozzle 18.

[0029] In this embodiment, a swing section front flange 11 is provided at the front end of the swing pipe section 16, and a nozzle rear flange 17 is provided at the rear end of the conical nozzle 18. The swing section front flange 11 and the nozzle rear flange 17 are fixedly connected by bolts, so that the conical nozzle 18 can be disassembled. When the conical nozzle 18 has problems such as excessive wear, it can be disassembled and replaced.

[0030] In this embodiment, a rotary section rear flange 6 is provided at the rear end of the rotary pipe section 8, and the rotary section rear flange 6 is fixedly connected to the rotary ring 5-2 by bolts. Figure 1 As shown in , the rear elevation of the rear flange 6 of the rotary section is in contact with the front elevation of the housing 5 - 1 of the rotary adjustment component 5 .

[0031] In this embodiment, a fixed section rear flange 1 is provided at the rear end of the fixed pipe section 3, and a fixed section front flange 4 is provided at the front end. The fixed section front flange 4 is fixedly connected to the rear part of the outer shell 5-1 by bolts, and a sealing ring can be provided between the two. Reinforcing ribs 2 are provided between the rear end of the fixed pipe section 3 and the fixed section rear flange 1, and between the front end of the fixed pipe section 3 and the fixed section front flange 4 to improve the overall structural strength.

[0032] Directions:

[0033] The end of the mud discharge pipeline is extended into the blowing and filling area, the variable angle shrinking device is also placed in the blowing and filling area, and the fixed pipe section 3 is connected to the end flange of the mud discharge pipeline by bolts through the flange 1 behind the fixed section;

[0034] Under the initial condition, the cone nozzle 18 is suspended by the lifting ring 12 using a crane or other facilities, and then the bolts between the front flange 14 of the ball sleeve and the rear flange 10 of the fixed sleeve are loosened to release the ball head 9, and the cone nozzle 18 is lifted upward by a crane or other facilities in cooperation with human operation to increase the mud injection angle, or the cone nozzle 18 is lowered to decrease the mud injection angle, and when the angle is adjusted to a suitable angle, the bolts are tightened again to fix the ball head 9 in the ball sleeve 13, and at this time, the elevation angle of the cone nozzle 18 is set, and the elevation angle determines the distance that the mud can be sprayed;

[0035] The mud is transported to the filling area through the mud discharge pipeline, and is sprayed out through the nozzle of the conical nozzle 18 after reaching the shrinking device; after a certain period of time, the on-site operator inputs a driving action to the rotary adjustment component 5 through the hand wheel 7, and then the rotary pipe section 8 and its accessories rotate to the left or right, and accordingly, the conical nozzle 18 swings to the left or right, and the position of the mud injection changes; after a certain period of injection and discharge, the mud transportation can be suspended, and the above-mentioned operation of adjusting the elevation angle of the conical nozzle 18 is repeated, and the mud injection distance is adjusted by adjusting the elevation angle, and then the mud transportation is started again and the conical nozzle 18 is driven to swing to the left or right through the hand wheel 7 and the rotary adjustment component 5 according to the on-site conditions.

Claims

1. A variable angle necking device for a mud discharge pipeline, characterized by: The invention comprises a fixed pipe section (3) and a swivel pipe section (8); a swivel adjustment component (5) for driving the swivel pipe section (8) to rotate and using a hand wheel (7) as input is installed between the front end of the fixed pipe section (3) and the rear end of the swivel pipe section (8); a ball sleeve (13) is provided at the front end of the swivel pipe section (8); a ball head (9) with a through hole is installed in the ball sleeve (13) using a fixed component; the fixed component and the ball sleeve (13) are detachably connected; a swing pipe section (16) is provided at the front of the ball head (9); a conical nozzle (18) is installed at the front end of the swing pipe section (16); and a lifting ring (12) is provided at the middle of the outer wall of the conical nozzle (18).

2. The variable angle necking device for mud discharge pipeline according to claim 1, characterized in that: The slewing adjustment component (5) comprises a housing (5-1), a driving box (5-4) is arranged on the side wall of the housing (5-1), a worm wheel (5-3) with a flow window in the middle is installed in the housing (5-1), a slewing ring (5-2) is fixedly installed in the front part of the worm wheel (5-3), a worm (5-5) matched with the worm wheel (5-3) is installed in the driving box (5-4), and a hand wheel (7) is installed at the outer end of the worm (5-5); the front end of the fixed pipe section (3) is fixedly connected to the rear part of the housing (5-1), and the rear end of the slewing pipe section (8) is fixedly connected to the slewing ring (5-2).

3. The variable angle necking device for mud discharge pipeline according to claim 2, characterized in that: A ball sleeve front flange (14) is provided at the front end of the ball sleeve (13); a fixing assembly comprises a fixing sleeve (15) for pressing and fixing the ball head (9); a fixing sleeve rear flange (10) is provided at the rear end of the fixing sleeve (15); the ball sleeve front flange (14) and the fixing sleeve rear flange (10) are fixedly connected by bolts.

4. The variable angle necking device for mud discharge pipeline according to claim 3, characterized in that: A swing section front flange (11) is provided at the front end of the swing pipe section (16), and a nozzle rear flange (17) is provided at the rear end of the conical nozzle (18). The swing section front flange (11) and the nozzle rear flange (17) are fixedly connected by bolts.

5. The variable angle necking device for mud discharge pipeline according to claim 4, characterized in that: A rotating section rear flange (6) is provided at the rear end of the rotating pipe section (8), and the rotating section rear flange (6) is fixedly connected to the rotating ring (5-2) by bolts.

6. The variable angle necking device for mud discharge pipeline according to claim 5, characterized in that: A fixed section rear flange (1) is provided at the rear end of the fixed pipe section (3), and a fixed section front flange (4) is provided at the front end. The fixed section front flange (4) is fixedly connected to the rear part of the housing (5-1) by bolts. A reinforcing rib plate (2) is provided between the rear end of the fixed pipe section (3) and the fixed section rear flange (1), and between the front end of the fixed pipe section (3) and the fixed section front flange (4).

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