Mud door suction port lining of trailing suction dredger

Abstract

The utility model relates to the technical field of linings, and provides a drag suction dredger mud door suction port lining which comprises a lining body, a noise reduction ring is fixedly installed on the outer side of the lining body, a first threaded groove is formed in the end, connected with a mud pump suction port, of the lining body, and a plurality of sets of elastic semicircular rings are arranged between threads of the first threaded groove. The outer wall of the elastic semicircular ring is fixedly provided with a plurality of sets of funnel damping blocks, the noise reduction ring welded to the outer side of the lining effectively isolates noise generated when the dredge pump works, reflection and outward transmission of the noise in the lining are reduced, the elastic semicircular ring, the funnel damping blocks and the damping blocks at the position of the flange plate buffer operation vibration of the dredge pump from multiple nodes, and the noise reduction effect is improved. Abrasion caused by rigid contact of the bushing and the pump body is reduced, tight connection is ensured, damage to the dredge pump caused by accidental separation of the bushing is prevented, and the operation stability and reliability of the dredge pump are comprehensively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bush, especially a rake suction ship mud door suction mouth bush. BACKGROUND

[0002] As the core equipment of dredging and slurry conveying ship operation, the development of mud pump has undergone several technical innovations. The early technology is simple and low in efficiency. With the development of advanced design tools such as CFD and material science and manufacturing process, the performance of mud pump is significantly improved. Under the urgent demand of port construction, channel dredging and other fields, the performance requirements of mud pump such as large flow, high lift, wear resistance and corrosion resistance are increasingly stringent. However, in the face of complex construction environment and increasingly strict environmental protection requirements, mud pump still faces challenges in adaptability, energy consumption and emission, and needs further optimization and improvement.

[0003] The existing patent with the publication number CN222254446U discloses a dredging pump bush with noise reduction function. When the staff needs to assemble the mounting sleeve in the mud pump, according to the size of the installation space inside the mud pump, the staff first pulls the left and right inner thread sleeves, so that the inner thread sleeve drives the second sliding block linkage connecting ring together with the first sliding block to move along the direction of the guide groove, until the inner thread sleeve and the part to be installed inside the mud pump are mutually fitted, then rotate the inner thread sleeve, so that the inner thread sleeve drives the second sliding block to rotate along the direction of the sliding groove, and then the inner thread sleeve and the mud pump inside are in the state of threaded connection. In addition, when the inner thread sleeve is threaded connected with the mud pump inside, the first sliding block is driven by the inner thread sleeve to move along the outside direction of the guide groove, ensuring the stability of the threaded connection between the inner thread sleeve and the mud pump inside.

[0004] For the related technology in the above, the slurry transported by the mud pump often contains solid particles. Long-term operation will cause the bush to wear out quickly. Even if some wear-resistant materials such as rubber and polyurethane are used, it is still difficult to completely avoid wear and tear in the case of high concentration and large particle slurry or long-term use, resulting in shortened service life of the bush, frequent replacement, increased maintenance cost and downtime. At the same time, the mud pump will produce vibration and impact during operation. The above design cannot effectively absorb and buffer these vibrations and impacts, which will cause additional stress on the bush itself and the components connected thereto, accelerate wear and tear and fatigue damage, and also produce a lot of noise. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model provides a rake suction ship mud door suction mouth bush to solve the problem that the mud pump will produce vibration and impact during operation, causing damage to the bush itself and the components connected thereto.

[0006] To solve the above technical problems, the utility model adopts the technical scheme: a suction mouth bushing of a dredge suction ship mud door, including bushing, bushing's outside welding has noise reduction ring, one end of bushing is connected with mud pipe through thread sleeve, the other end of bushing is connected with mud pump suction mouth through flange plate, after bushing is connected with mud pipe and mud pump suction mouth, when marine mud pump works, bushing can reduce vibration and noise generated by slurry flow and mechanical movement through noise reduction ring, improve the working environment quality of ship, in mechanical movement, the relative friction between the components connected through bushing is easy to cause abrasion, bushing as intermediate medium, isolate shaft and other components, bear most of the friction, thereby protect shaft and other expensive components from being abraded, prolong its service life.

[0007] Preferably, the end of the bushing connected with the mud pump suction port is provided with a threaded groove one, a plurality of elastic semicircular rings are arranged between the threads of the threaded groove one, the elastic semicircular rings are made of rubber and polyurethane, the outer diameter of the elastic semicircular ring is 3nm-5nm larger than the outer diameter of the bushing, the bushing is connected with the mud pump suction port through the threaded groove one, after the bushing is turned into the mud pump suction port, the elastic semicircular ring is tightly fitted with the inner wall of the mud pump suction port under the extrusion force, the elastic semicircular ring effectively buffers the vibration and impact generated during the operation of the mud pump, reduces the rigid contact between the bushing and the pump body, reduces the abrasion and noise, and prevents the bushing from separating from the mud pump, causing the problem of damage to the mud pump.

[0008] Preferably, the outer wall of the elastic semicircular ring is fixedly installed with a plurality of funnel damping blocks, the upper half of the funnel damping block is located outside the elastic semicircular ring, the lower half of the funnel damping block is located inside the elastic semicircular ring, the funnel damping block is made of viscoelastic material, and the vibration energy is further dissipated through the funnel damping block on the basis of the buffering of the elastic semicircular ring, so that the funnel damping block can deform freely within a certain range when subjected to vibration, so as to play a role in shock absorption and buffering, improve the stability of the mud pump, and reduce the fatigue damage of the components caused by vibration.

[0009] Preferably, the flange plate is fixedly connected with the mud pump suction port through bolts, a plurality of damping blocks are fixedly installed on the side of the flange plate close to the mud pump suction port, when the one end of the bushing is fixedly connected with the flange of the mud pump through the flange plate, the vibration occurring when the bushing and the mud pump are started is buffered twice through the plurality of damping blocks, and the connection tightness of the bushing and the mud pump is improved.

[0010] Preferably, the sandwich of the bushing is divided into three layers, the outer layer is made of high-strength nickel-based alloy, the middle layer is made of buffer rubber, and the inner layer is made of ultra-high molecular weight polyethylene, the high-strength nickel-based alloy is provided with a threaded groove one on the outer side of the end close to the flange, the outer layer has high hardness and strength, can resist the high pressure generated during the operation of the slurry pump and the possible collision, protect the middle layer and the inner layer inside from being damaged, the middle layer has good elasticity, helps to reduce the vibration generated during the operation of the slurry pump from being transmitted to other parts, reduces the influence of noise and vibration on the equipment, and the inner layer has an extremely low friction coefficient, so that the slurry flows more smoothly in the bushing, reducing energy loss and resistance.

[0011] Preferably, the inner side of the threaded sleeve is provided with a threaded groove two, and the bushing is threadedly connected with the slurry conveying pipe through the threaded groove two.

[0012] Preferably, the noise reduction ring comprises a sound insulation shell, the inner side of the sound insulation shell is fixed with the outer layer of the bushing by welding, a plurality of vacuum ring grooves are formed in the inner side of the sound insulation shell, a plurality of sound-absorbing cottons are fixedly installed in the vacuum ring grooves, and the sound-absorbing cottons are attached to the outer wall of the bushing. When the slurry pump is working, the vacuum ring grooves and the sound-absorbing cottons of the sound insulation shell effectively isolate the noise, reducing the reflection and propagation of the noise inside the bushing.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a kind of dredger suction ship mud door suction bushings, bushing outside welding noise reduction ring, through the vacuum ring groove of sound insulation shell and internal sound-absorbing cotton collaborative work, effectively isolate the noise generated when slurry pump works, greatly reduce the reflection and external propagation of noise inside bushing, greatly improve ship working environment, reduce the noise interference to crew and peripheral equipment, in wear resistance and protection, the three-layer sandwich structure of bushing is ingenious, outer layer high-strength nickel-based alloy resists high pressure and collision, middle layer buffer rubber reduces vibration transmission, inner layer ultra-high molecular weight polyethylene reduces slurry flow resistance and reduces abrasion, all-round protection bushing and connected components, significantly prolong service life, elastic semicircle ring, funnel damper block and damper block at flange, buffer slurry pump operation vibration from multiple nodes, not only reduce the abrasion caused by rigid contact of bushing and pump body, but also ensure that connection is tight, prevent slurry pump damage caused by accidental separation of bushing, comprehensively improve slurry pump operation stability and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0015] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes. And not intended to constitute a limitation on the scope of protection of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0016] Figure 1 The overall structure is schematically shown according to one embodiment of the utility modelFigure 1

[0017] Figure 2 The overall structure diagram according to the embodiment of the present application is schematically shown Figure 2

[0018] Figure 3 The overall structure explosion diagram according to the embodiment of the present application is schematically shown

[0019] Figure 4 The flange structure diagram according to the embodiment of the present application is schematically shown

[0020] Figure 5 The elastic semicircular ring structure diagram according to the embodiment of the present application is schematically shown

[0021] Figure 6 The enlarged view of A according to the embodiment of the present application is schematically shown

[0022] Figure 7 The internal section view of the bush according to the embodiment of the present application is schematically shown

[0023] Figure 8 The section view of the threaded sleeve according to the embodiment of the present application is schematically shown

[0024] Figure 9 The noise reduction ring structure diagram according to the embodiment of the present application is schematically shown

[0025] Reference signs in the drawing: 1, bush; 11, flange; 111, bolt; 112, damping block; 12, threaded sleeve; 121, threaded groove two; 13, threaded groove one; 131, elastic semicircular ring; 132, funnel damping block; 14, inner layer; 15, middle layer; 16, outer layer; 2, noise reduction ring; 21, sound insulation shell; 211, vacuum ring groove; 212, sound absorbing cotton. DETAILED DESCRIPTION

[0026] It is easy to understand that according to the technical scheme of the present application, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical scheme of the present application.

[0027] In order to further understand the content of the present application, the present application is described in detail in combination with the drawings.

[0028] ​​According to an embodiment of the utility model Figures 1-3 As shown, the mud door suction port bushing of the trailing suction dredger comprises a bushing 1, a noise reduction ring 2 is welded on the outer side of the bushing 1, one end of the bushing 1 is connected with the mud conveying pipe through a threaded sleeve 12, the other end of the bushing 1 is connected with the mud pump suction port through a flange plate 11, after the bushing 1 is connected with the mud conveying pipe and the mud pump suction port, the bushing 1 can reduce the vibration and noise generated by the flow of mud and mechanical movement through the noise reduction ring 2 when the marine mud pump is working, the quality of the working environment of the ship is improved, in the mechanical movement, the relative friction between the components connected through the bushing 1 is easy to cause abrasion, the bushing 1 acts as an intermediate medium to isolate the shaft from other components, bears most of the friction, thereby protecting the shaft and other expensive components from being abraded and prolonging the service life thereof.

[0029] As shown in the combination Figures 1-3 , Figure 5 As shown, a threaded groove one 13 is formed in the end of the bushing 1 connected with the mud pump suction port, a plurality of elastic semicircular rings 131 are arranged between the threads of the threaded groove one 13, the elastic semicircular rings 131 are made of rubber and polyurethane, the outer diameter of the elastic semicircular rings 131 is greater than the outer diameter of the bushing 1 by 3nm-5nm, the bushing 1 is connected with the mud pump suction port through the threaded groove one 13, after the bushing 1 is turned into the mud pump suction port, the elastic semicircular rings 131 are tightly attached to the inner wall of the mud pump suction port under the extrusion force, the vibration and impact generated during the operation of the mud pump are effectively buffered through the elastic semicircular rings 131, the rigid contact between the bushing 1 and the pump body is reduced, the abrasion and noise are reduced, and at the same time, the problem of separation of the bushing 1 from the mud pump is prevented, thereby preventing the damage of the mud pump.

[0030] As shown in the combination Figures 5-6 As shown, a plurality of funnel damping blocks 132 are fixedly installed on the outer wall of the elastic semicircular ring 131, the upper half of the funnel damping block 132 is located outside the elastic semicircular ring 131, the lower half of the funnel damping block 132 is located inside the elastic semicircular ring 131, the funnel damping block 132 is made of viscoelastic material, on the basis of the buffering of the elastic semicircular ring 131, the vibration energy is further dissipated through the funnel damping block 132, so that the funnel damping block 132 can deform freely within a certain range when subjected to vibration, so as to play a role in shock absorption and buffering, improve the stability of the mud pump, and reduce the fatigue damage of the components caused by vibration.

[0031] As shown in the combination Figures 2-4 As shown, the flange plate 11 is fixedly connected with the mud pump suction port through a bolt 111, a plurality of damping blocks 112 are fixedly installed on the side of the flange plate 11 close to the mud pump suction port, when the one end of the bushing 1 is fixedly connected with the flange of the mud pump through the flange plate 11, the vibration occurring when the bushing 1 and the mud pump are started is secondarily buffered through the plurality of damping blocks 112, and the connection tightness of the bushing 1 and the mud pump is improved.

[0032] As shown in the combinationFigures 1-3 , Figure 7 As shown, the bushing 1 has three layers: the outer layer 16 is made of high-strength nickel-based alloy, the middle layer 15 is made of cushioning rubber, and the inner layer 14 is made of ultra-high molecular weight polyethylene. The outer layer 16 has a threaded groove 13 on the outer side near the flange 11. The outer layer 16 has high hardness and strength, which can resist the high pressure generated during the operation of the mud pump and the possible impacts, protecting the inner middle layer 15 and inner layer 14 from damage. The middle layer 15 has good elasticity, which helps to reduce the transmission of vibration generated during the operation of the mud pump to other parts, reducing the impact of noise and vibration on the equipment. The inner layer 14 has an extremely low coefficient of friction, which makes the mud flow more smoothly in the bushing 1, reducing energy loss and resistance.

[0033] Combination Figure 2 , Figure 8 As shown, the inner side of the threaded sleeve 12 is provided with a second threaded groove 121, and the bushing 1 is threadedly connected to the mud conveying pipe through the second threaded groove 121 inside the threaded sleeve 12.

[0034] Combination Figure 2 , Figure 9 As shown, the noise reduction ring 2 includes a sound insulation shell 21. The inner side of the sound insulation shell 21 is fixed to the outer layer 16 of the bushing 1 by welding. Multiple sets of vacuum ring grooves 211 are opened on the inner side of the sound insulation shell 21. Multiple sets of sound-absorbing cotton 212 are fixedly installed inside the vacuum ring grooves 211. The sound-absorbing cotton 212 is tightly attached to the outer wall of the bushing 1. When the mud pump is working, the noise is effectively isolated by the vacuum ring grooves 211 of the sound insulation shell 21 and the sound-absorbing cotton 212, reducing the reflection and propagation of noise inside the bushing 1.

[0035] In this embodiment, when the marine mud pump is working, the mud enters through the mud conveying pipe that is threaded to one end of the bushing 1 through the internal thread groove 121 of the threaded sleeve 12. The mud passes through the bushing 1, which consists of an outer layer of high-strength nickel-based alloy to resist high-pressure impact, a middle layer of buffer rubber to reduce vibration transmission, and an inner layer of ultra-high molecular weight polyethylene to reduce flow resistance. During this process, the noise-reducing ring 2 welded to the outside of the bushing 1 isolates noise through the vacuum ring groove 211 inside the soundproof shell 21 and the internal sound-absorbing cotton 212. Simultaneously, the bushing 1 and the mud pump... Inside the threaded groove 13 at one end of the suction port, an elastic semi-circular ring 131 with an outer diameter 3nm-5nm larger than the outer diameter of the bushing 1 fits tightly against the inner wall of the mud pump suction port under the extrusion pressure to buffer vibration and impact. The funnel damping block 132 made of viscoelastic material on the outer wall of the elastic semi-circular ring 131 further dissipates vibration energy. Multiple sets of damping blocks 112 fixed to one side of the flange 11 of the mud pump suction port by bolts 111 provide secondary buffering for the starting vibration, thereby achieving stable and efficient operation and reducing noise and wear.

[0036] The technical scope of the utility model is not only limited to the content in the above description, and the person skilled in the art can make various deformations and modifications to the above embodiment without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection scope of the utility model.

Claims

1. A suction inlet bushing for a trailing suction hopper dredger, characterized in that: Includes a bushing (1), on the outer side of which a noise reduction ring (2) is fixedly installed. The bushing (1) has a threaded groove (13) at one end connected to the mud pump suction port. Multiple sets of elastic semi-circular rings (131) are arranged between the threads of the threaded groove (13). Multiple sets of funnel damping blocks (132) are fixedly installed on the outer wall of the elastic semi-circular rings (131). The upper half of the funnel damping block (132) is located outside the elastic semi-circular ring (131), and the lower half of the funnel damping block (132) is located inside the elastic semi-circular ring (131).

2. The suction inlet bushing of the trailing suction hopper dredger according to claim 1, characterized in that: One end of the bushing (1) is connected to the mud conveying pipe through a threaded sleeve (12), and the other end of the bushing (1) is connected to the mud pump suction port through a flange (11).

3. The suction inlet bushing of the trailing suction hopper dredger according to claim 2, characterized in that: The flange (11) is fixedly connected to the mud pump inlet by bolts (111), and multiple sets of damping blocks (112) are fixedly installed on the side of the flange (11) near the mud pump inlet.

4. The suction inlet bushing of the trailing suction hopper dredger according to claim 1, characterized in that: The bushing (1) is divided into an outer layer (16), a middle layer (15), and an inner layer (14) from the outside to the inside. The outer layer (16) is a component made of nickel-based alloy, the middle layer (15) is a component made of rubber, and the inner layer (14) is a component made of polyethylene.

5. The suction inlet bushing of the trailing suction hopper dredger according to claim 3, characterized in that: The inner side of the threaded sleeve (12) is provided with a second threaded groove (121), and the bushing (1) is threadedly connected to the mud conveying pipe through the second threaded groove (121).

6. The suction inlet bushing of the trailing suction hopper dredger according to claim 1, characterized in that: The noise reduction ring (2) includes a sound insulation shell (21), which is fixedly connected to the bushing (1). Multiple sets of vacuum ring grooves (211) are opened on the inner side of the sound insulation shell (21), and multiple sets of sound-absorbing cotton (212) are fixedly installed inside the vacuum ring grooves (211). The sound-absorbing cotton (212) is attached to the outer wall of the bushing (1).

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