Double-layer vibration isolation device of vertical right-angle pump

Abstract

The invention discloses a vertical right-angle pump double-layer vibration isolation device, which belongs to the technical field of marine vibration reduction and comprises an upper-layer vibration isolator and a lower-layer vibration isolator, a vertical pump is mounted at the top of the upper-layer vibration isolator, the upper-layer vibration isolator and the lower-layer vibration isolator are connected through a middle frame, and a lifting adjusting mechanism is mounted at the top of the upper-layer vibration isolator. The top of the lifting adjusting mechanism is movably connected with a mounting seat; the vertical pump is fixedly mounted on the mounting seat; the top of the upper-layer vibration isolator is further provided with a supporting stand column, the two ends of the mounting base are rotationally connected with the supporting stand column and fixed through a locking mechanism, when the mounting base rotates, the lifting adjusting mechanism is controlled to be separated from the mounting base, and after the mounting base is fixed through the locking mechanism, the lifting mechanism is controlled to make contact with the mounting base. By arranging the lifting adjusting mechanism, the mounting height of the vertical pump on the device can be controlled, and after the vertical pump is mounted to the optimal gravity center position, the mounted vertical pump and the double-layer vibration isolation device are in a stable state.

Description

Technical Field

[0001] The invention relates to the technical field of marine vibration reduction, and in particular to a double-layer vibration isolation device for a vertical right-angle pump. Background Art

[0002] The pump on the ship will cause strong structural vibration during the startup and operation process, and the vibration will be transmitted to the hull, which will have an adverse effect on the operation of the system equipment. Vibration isolation devices are usually used to isolate the vibration of the pump from being transmitted to the hull, absorb the energy caused by the vibration of the pump and the impact caused by the external environment, achieve the purpose of protecting the equipment, and improve the vibration and noise reduction performance of the ship. Since the inlet and outlet of the vertical right-angle pump are 90 degrees and the center of gravity of the pump is relatively high, the traditional bottom-flat vibration isolation installation method will make the inlet pipeline at the bottom of the pump inconvenient to install and maintain. At the same time, due to the structural vibration of the pump itself or when it is impacted by the external environment, there is a safety hazard of instability and tipping.

[0003] In order to solve the safety hazard of tipping, the installation of vertical right-angle pumps in the prior art adopts a double-layer vibration isolation structure. For example, the patent with publication number: CN118775343A discloses a pump group installation method with a double-layer vibration isolation structure, which uses an intermediate base to realize the horizontal placement of the waist of the vertical right-angle pump, which not only raises the height of the pump to facilitate the installation and maintenance of the pipeline, but also the double-layer vibration isolation increases the vibration reduction and noise reduction effect. However, since the overall height of the intermediate base and the upper and lower layers of vibration isolators is fixed, the height of the intermediate base determines the installation height of the vertical right-angle pump. For different vertical right-angle pumps, the installation height is different, which makes the center of gravity of the overall device after installation change accordingly. When the center of gravity is high, especially when the ship is shaking, it is easy to cause the entire device to be unstable. Therefore, the existing vibration isolation device cannot select an optimal installation height according to different vertical right-angle pumps. Summary of the invention

[0004] The present invention aims to solve the problem that the vertical right-angle pump installed with the above-mentioned traditional double-layer vibration isolation device is not stable enough and to provide a vertical right-angle pump double-layer vibration isolation device, which has the advantages of being able to find the best center of gravity by rotation, adapting to different pump groups, being flexible in installation and having better stability.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A vertical right-angle pump double-layer vibration isolation device, comprising an upper vibration isolator and a lower vibration isolator, a vertical pump is installed on the top of the upper vibration isolator, the upper vibration isolator and the lower vibration isolator are connected by an intermediate frame, a lifting adjustment mechanism is installed on the top of the upper vibration isolator, a movable connection mounting seat is installed on the top of the lifting adjustment mechanism, and the vertical pump is fixedly installed on the mounting seat;

[0007] A supporting column is also installed on the top of the upper vibration isolator. The two ends of the mounting seat are rotatably connected to the supporting column and fixed by a locking mechanism. When the mounting seat rotates, the lifting adjustment mechanism is controlled to separate from the mounting seat. After the mounting seat is fixed by the locking mechanism, the lifting mechanism is controlled to contact the mounting seat.

[0008] Preferably, the mounting seat comprises a rectangular frame structure consisting of two groups of side beams and two groups of end beams, an axle head is installed in the middle of each end beam, a rotating seat is sleeved on the axle head, and the rotating seat is installed on the supporting column so as to be movable up and down.

[0009] Preferably, the locking mechanism includes a fixing pin installed on the rotating seat, a first fixing hole is opened on the supporting column, and a second fixing hole is opened at the end of the side beam. The fixing pin passes through the first fixing hole and is inserted into the second fixing hole to fix the rotating seat and the side beam and the supporting column on the same horizontal plane.

[0010] Preferably, a lifting slot is provided on the support column, connecting rods are provided on both sides of the rotating seat, one end of the connecting rod passes through the lifting slot and a fixed seat is installed, a pin hole is provided on the fixed seat, and a fixing pin is installed on the pin hole.

[0011] Preferably, the first fixing holes are provided on the side wall of the supporting column, and a plurality of the first fixing holes are provided and are evenly distributed along the length direction of the supporting column.

[0012] Preferably, the lifting adjustment mechanism includes a base and a lifting seat, the base and the lifting seat are connected by a cross arm, the end of one of the arm rods of the cross arm is connected to an adjusting screw rod, and the lifting seat is lifted and lowered by controlling the crossing angle of the cross arm by adjusting the screw rod.

[0013] Preferably, a slide groove is provided on the base, the arm rod of the cross arm is connected to the sliding seat, the sliding seat is slidably connected to the slide groove, one end of the adjusting screw rod is rotatably connected to the sliding seat, and a crank is provided at the other end.

[0014] Preferably, a gasket is provided on the top of the lifting seat.

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

[0016] 1. By setting a lifting and adjusting mechanism, the installation height of the vertical pump on the device can be controlled. As the installation height changes, the center of gravity of the entire device after installation also changes. Since the mounting seat and the supporting column can be in two states, rotation and locking, the swing of the vertical pump during rotation is conducive to finding out whether the double-layer vibration isolation device is stable. After finding the most stable position, it is locked to fix the height of the vertical pump. In addition, the lifting and adjusting mechanism leaves the mounting seat during rotation. After locking, the lifting and adjusting mechanism is connected to the mounting seat. The lifting and adjusting mechanism is used as the support of the vertical pump as a whole, which is stable and avoids damage to the rotatable structure.

[0017] 2. The locking mechanism of the present invention uses a fixing pin to fix the rotating seat, the supporting column and the mounting seat. The structure is simple and not easy to be damaged. In addition, the lifting adjustment mechanism uses a cross arm controlled by an adjusting screw rod to promote the lifting of the lifting seat, which makes it more convenient to fix the lifting seat after it reaches the specified position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the vertical pump of the present invention installed on a double-layer vibration isolation device.

[0019] Figure 2 It is a schematic diagram of the connection structure between the mounting seat and the rotating seat of the present invention.

[0020] Figure 3 It is a schematic diagram showing that the fixing seat and the connecting rod of the present invention are distributed on both sides of the rotating seat.

[0021] Figure 4 It is a schematic diagram of the position of the fixing pin when the height of the rotating seat of the present invention is fixed.

[0022] Figure 5 It is a schematic diagram of the structure of the lifting and lowering adjustment mechanism of the present invention.

[0023] In the figure: 1. vertical pump, 2. upper vibration isolator, 3. lower vibration isolator, 4. middle frame, 5. lifting adjustment mechanism, 51. base, 52. cross arm, 53. lifting seat, 54. gasket, 55. slide groove, 56. sliding seat, 57. adjusting screw, 6. supporting column, 61. lifting groove, 62. first fixing hole, 7. mounting seat, 71. side beam, 72. end beam, 73. shaft head, 74. rotating seat, 75. second fixing hole, 8. locking mechanism, 81. connecting rod, 82. fixing pin, 83. fixing seat, 84. pin hole. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] like Figure 1 As shown, a vertical right-angle pump double-layer vibration isolation device is disclosed, including an upper vibration isolator 2 and a lower vibration isolator 3. A vertical pump 1 is installed on the top of the upper vibration isolator 2. The upper vibration isolator 2 and the lower vibration isolator 3 are connected by an intermediate frame 4. The vertical pump 1 is installed on the upper vibration isolator 2. The vibration will be reduced and noise reduced once on the upper vibration isolator 2. After being transmitted to the lower vibration isolator 2 by the intermediate frame 4, vibration reduction and noise reduction will be performed again. Therefore, by adopting a double-layer vibration isolator, the vibration reduction and noise reduction effect is better, and the existence of the intermediate frame 4 can raise the height of the vertical pump 1, so that the water inlet and outlet pipes below it are not easily blocked or hinder the installation of the entire pump group. The vibration isolator is an elastic element connecting the equipment and the foundation, which is used to reduce and eliminate the vibration force transmitted from the equipment to the foundation and the vibration transmitted from the foundation to the equipment. It belongs to a relatively mature technology, so the specific working of the vibration isolator will not be described here. Due to the use of a double-layer vibration isolation device, the height of the intermediate frame 4 determines the installation height of the vertical pump 1. Different vertical pumps 1 have different shapes or sizes. If a fixed intermediate frame 4 is used, it is easy to cause insufficient adaptation during installation, affecting the normal use of the vertical pump 1. Therefore, the following text is a detailed description of the specific structure and use principle of the present invention to solve this problem.

[0026] like Figure 1 As shown, a lifting adjustment mechanism 5 is installed on the top of the upper vibration isolator 2, and a movable connection mounting seat 7 is installed on the top of the lifting adjustment mechanism 5. The vertical pump 1 is fixedly installed on the mounting seat 7. The height of the mounting seat 7 can be raised by the lifting adjustment mechanism 5. The vertical pump 1 is fixed on the mounting seat 7, so that the installation height can be changed to achieve the installation of vertical pumps 1 of different sizes. However, because the sizes and shapes of the vertical pumps 1 are different, if the most suitable installation height of the vertical pump 1 cannot be accurately positioned only by the lifting adjustment mechanism 5, the vertical pump 1 will be combined with the double-layer vibration isolation device. The center of gravity is higher, affecting the stability of the device. To solve this problem, the following structural design is performed:

[0027] like Figure 1 and Figure 2As shown, a supporting column 6 is also installed on the top of the upper vibration isolator 2, and both ends of the mounting seat 7 are rotatably connected to the supporting column 6 and fixed by a locking mechanism 8. When the mounting seat 7 rotates, the lifting and adjusting mechanism 5 is controlled to separate from the mounting seat 7. After the mounting seat 7 is fixed by the locking mechanism 8, the lifting mechanism 5 is controlled to contact with the mounting seat 7. The mounting seat 7 is set to be rotatably connected to the supporting column 6. As mentioned above, the mounting seat 7 and the lifting and adjusting mechanism 5 are connected movably, so the mounting seat 7 and the lifting and adjusting mechanism 5 are separable. After the mounting seat 7 is sent to a certain height by using the lifting and adjusting structure 5, the height at least needs to ensure that the pipeline at the bottom of the vertical pump 1 does not touch the ground. The lifting and adjusting mechanism 5 is separated from the mounting seat 7. At this time, the mounting seat 7 can be rotated about the middle axis, and the vertical pump 1 realizes a swinging state. The swinging vertical pump 1 is used to test whether the double-layer vibration isolation device below can be stable at this height position. If it is not stable enough, the lifting and adjusting mechanism 5 is used to slowly support the mounting seat 7 to descend until a stable height is found, or the pipeline of the vertical pump 1 touches the ground, and then the locking mechanism 8 is used to lock the rotation state of the mounting seat 7. If it is stable enough, the lifting and adjusting mechanism 5 can be used to slowly lift the mounting seat 7 to a certain height, and continue to test the stability until a suitable height and suitable stability are selected, and the locking mechanism 8 is used to lock it. Using the above method, the best installation height of different vertical pumps 1 can be accurately found, and the use is more flexible.

[0028] In order to ensure the normal rotation of the mounting seat 7, Figure 2 As shown, the mounting base 7 includes a rectangular frame structure consisting of two groups of side beams 71 and two groups of end beams 72. An axle head 73 is installed in the middle of each end beam 72, and a rotating base 74 is sleeved on the axle head 73. The rotating base 74 can be installed on the supporting column 6 and can be adjusted up and down by fixing the rotating shaft 74 and the supporting column 6. This not only allows the mounting base 7 to rotate on the rotating base 74, but also does not affect the rotating base 74 from moving up and down with the mounting base 7.

[0029] like Figure 3 and Figure 4As shown, the locking mechanism 8 includes a fixing pin 82 installed on the rotating seat 74, a first fixing hole 62 is provided on the support column 6, and a second fixing hole 75 is provided at the end of the side beam 71. The fixing pin 82 passes through the first fixing hole 62 and is inserted into the second fixing hole 75 to fix the rotating seat 74 and the side beam 71 on the same horizontal plane to the support column 6. As mentioned above, when the mounting seat 7 is rotated, the lifting and adjusting mechanism 5 needs to leave the mounting seat 7 in order not to affect the swing of the mounting seat 7. Therefore, the fixing pin 82 can be inserted into the first fixing hole 62. At this time, the rotating seat 74 and the support The columns 6 are in a fixed state, and the mounting seat 7 can rotate with the rotating seat 74 through the shaft head 73. When the rotation is completed, the fixing pin 82 is pushed again to insert it not only into the first fixing hole 62, but also into the second fixing hole 75. At this time, the rotation of the mounting seat 7 is locked. At this time, the mounting seat 7 is in an immobile state. Since the weight of the vertical pump 1 is borne by the fixing pin 82 at this time, the stability is poor, so it is necessary to continue to lift the supporting mounting seat 7 through the lifting and adjusting mechanism 5 again, and the lifting and adjusting mechanism 5 is used as a load-bearing mechanism to ensure the stability of the installation of the vertical pump 1.

[0030] like Figure 4 As shown, the support column 6 is provided with a lifting slot 61, and connecting rods 81 are provided on both sides of the rotating seat 74. The connecting rod 81 passes through one end of the lifting slot 61 and is installed with a fixed seat 83. The fixed seat 83 is provided with a pin hole 84, and the fixing pin 82 is installed on the pin hole 84. The rotating seat 74 realizes synchronous lifting and lowering with the mounting seat 7 by sliding the connecting rod 81 in the lifting slot 61, and the fixing pin 82 is installed on the fixing seat 83 and moves with the movement of the fixing seat 83, so as to facilitate the fixing of the rotating seat 74 and the mounting seat 7 on the support column 6 at a suitable position. Since it is impossible to ensure at which height the mounting seat 7 will be fixed, the first fixing holes 62 are provided on the side wall of the support column 6, and a plurality of them are provided, which are evenly distributed along the length direction of the support column 6, and the plurality of first fixing holes 62 can realize fixing at different heights.

[0031] like Figure 5 As shown, the lifting and lowering adjustment mechanism 5 includes a base 51 and a lifting seat 53. The base 51 and the lifting seat 53 are connected by a cross arm 52. The end of one of the arm rods of the cross arm 52 is connected to an adjusting screw 57. The lifting and lowering of the lifting seat 53 is achieved by controlling the crossing angle of the cross arm 52 by adjusting the screw 57. The cross arm 52 is pushed by the adjusting screw 57 to change the crossing angle, thereby achieving the distance adjustment between the lifting seat 53 and the base 51. Since the base 51 is fixed on the upper vibration isolator 2, the lifting seat 53 can be lifted and lowered, and the adjusting screw 57 can maintain the height of the lifting seat 53 without rotating, which is also conducive to the above-mentioned use of the lifting and lowering adjustment mechanism 5 as the gravity support of the vertical pump 1 as a whole.

[0032] In order to ensure the smoothness of the cross arm 52 in changing the crossing angle, a slide groove 55 is opened on the base 51, the arm rod of the cross arm 52 is connected to the sliding seat 56, the sliding seat 56 is slidably connected to the slide groove 55, one end of the adjusting screw rod 57 is rotatably connected to the sliding seat 56, and the other end is provided with a crank. The sliding seat 56 slides in the slide groove 55, so that the cross arm 52 changes the crossing angle more smoothly. The crank is used to facilitate the rotation of the adjusting screw rod 57. A gasket 54 is set on the top of the lifting seat 53, and a fixing bolt is installed at the position of the gasket 54 to make the lifting seat 53 and the mounting seat 7 rigidly connected to ensure the integrity between the double-layer vibration isolation device and the vertical pump 1, so as to avoid affecting the vibration reduction effect of the double-layer vibration isolation device.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vertical right-angle pump double-layer vibration isolation device, comprising an upper vibration isolator (2) and a lower vibration isolator (3), a vertical pump (1) is installed on the top of the upper vibration isolator (2), and the upper vibration isolator (2) and the lower vibration isolator (3) are connected by an intermediate frame (4), characterized in that: A lifting and lowering adjustment mechanism (5) is installed on the top of the upper vibration isolator (2), a movable connection mounting seat (7) is installed on the top of the lifting and lowering adjustment mechanism (5), and the vertical pump (1) is fixedly installed on the mounting seat (7); A supporting column (6) is also installed on the top of the upper vibration isolator (2), and the two ends of the mounting seat (7) are rotatably connected to the supporting column (6) and fixed by a locking mechanism (8). When the mounting seat (7) rotates, the lifting and lowering adjustment mechanism (5) is controlled to separate from the mounting seat (7). After the mounting seat (7) is fixed by the locking mechanism (8), the lifting and lowering mechanism (5) is controlled to contact the mounting seat (7).

2. A vertical right-angle pump double-layer vibration isolation device according to claim 1, characterized in that: The mounting seat (7) comprises a rectangular frame structure composed of two groups of side beams (71) and two groups of end beams (72). An axle head (73) is installed in the middle of each end beam (72). A rotating seat (74) is sleeved on the axle head (73). The rotating seat (74) is installed on the supporting column (6) in a manner that it can move up and down.

3. A vertical right-angle pump double-layer vibration isolation device according to claim 2, characterized in that: The locking mechanism (8) comprises a fixing pin (82) mounted on the rotating seat (74), a first fixing hole (62) is provided on the supporting column (6), and a second fixing hole (75) is provided at the end of the side beam (71). The fixing pin (82) passes through the first fixing hole (62) and is inserted into the second fixing hole (75), so that the rotating seat (74) and the side beam (71) on the same horizontal plane are fixed to the supporting column (6).

4. A vertical right-angle pump double-layer vibration isolation device according to claim 3, characterized in that: The support column (6) is provided with a lifting groove (61), and connecting rods (81) are arranged on both sides of the rotating seat (74). One end of the connecting rod (81) passes through the lifting groove (61) and is installed with a fixing seat (83). The fixing seat (83) is provided with a pin hole (84), and the fixing pin (82) is installed on the pin hole (84).

5. A vertical right-angle pump double-layer vibration isolation device according to claim 4, characterized in that: The first fixing holes (62) are provided on the side wall of the supporting column (6), and a plurality of the first fixing holes (62) are provided and are evenly distributed along the length direction of the supporting column (6).

6. A vertical right-angle pump double-layer vibration isolation device according to claim 1, characterized in that: The lifting adjustment mechanism (5) comprises a base (51) and a lifting seat (53); the base (51) and the lifting seat (53) are connected via a cross arm (52); the end of one arm rod of the cross arm (52) is connected to an adjusting screw rod (57); and the lifting seat (53) is lifted and lowered by controlling the crossing angle of the cross arm (52) via the adjusting screw rod (57).

7. A vertical right-angle pump double-layer vibration isolation device according to claim 6, characterized in that: The base (51) is provided with a slide groove (55), the arm rod of the cross arm (52) is connected to the sliding seat (56), the sliding seat (56) is slidably connected to the slide groove (55), one end of the adjusting screw rod (57) is rotatably connected to the sliding seat (56), and the other end is provided with a crank.

8. A vertical right-angle pump double-layer vibration isolation device according to claim 6, characterized in that: A gasket (54) is arranged on the top of the lifting seat (53).

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