Noise reduction structure of pipeline pump

Abstract

The utility model discloses a pipeline pump noise reduction structure which comprises an installation bottom plate, a pipeline pump body is fixedly installed at the upper end of the installation bottom plate, a pump body noise reduction cavity is fixedly installed at the outer end of the lower end of the pipeline pump body, and the interior of the pump body noise reduction cavity is partially filled with a sound absorption material layer. Reinforcing ribs and sound insulation protrusions are fixedly installed on the inner wall of the pump body noise reduction cavity, a supporting table is fixedly installed at the upper end of the pipeline pump body, a fixing cover is fixedly installed at the upper side end of the supporting table, a swing cover is rotationally connected to the upper end of the fixing cover through a damping shaft, and air holes are formed in the two sides of the swing cover. A fixing frame is fixedly installed at the outer end of the air hole, and the upper end of the fixing frame is rotationally connected with a sound insulation cover used for shielding the air hole through a damping shaft. The two sides of the lower end of the pipeline pump body fixedly communicate with a pump body inlet pipe and a pump body outlet pipe correspondingly. The noise reduction device achieves the effect of comprehensively reducing noise on the upper portion and the lower portion of the pipeline pump body.

Description

Technical Field

[0001] This utility model relates to the field of pipeline pump technology, specifically a noise reduction structure for pipeline pumps. Background Technology

[0002] A pipeline pump is a single-suction, single-stage or multi-stage centrifugal pump. It gets its name from its inlet and outlet being on the same straight line with the same diameter, resembling a section of pipe in appearance, and thus able to be directly connected in series with other pipes. It mainly consists of components such as the pump body, impeller, pump shaft, bearings, sealing rings, and stuffing box (or mechanical seal).

[0003] Among them, pipeline pumps, as key equipment for fluid transportation, are widely used in industrial production and daily life. During operation, pipeline pumps generate considerable noise due to the interaction between the motor rotation, impeller rotation and fluid.

[0004] However, in actual use, the noise generated by pipeline pumps not only causes noise pollution to the surrounding environment, affecting the physical and mental health and work efficiency of workers, but may also cause dissatisfaction and complaints from residents in residential areas and other places with high requirements for environmental noise. Although there are some measures to reduce the noise of pipeline pumps, most of them have limited noise reduction effects. For example, improving the impeller design can reduce fluid noise, but the effect on suppressing mechanical noise such as motor noise is not good. Utility Model Content

[0005] The purpose of this utility model is to provide a noise reduction structure for pipeline pumps, in order to solve the problem mentioned in the background art that the noise generated by pipeline pumps not only causes noise pollution to the surrounding environment, affecting the physical and mental health and work efficiency of workers, but may also cause dissatisfaction and complaints from residents in residential areas and other places with high requirements for environmental noise. Although there are some measures for reducing noise in pipeline pumps, most of them have limited noise reduction effects. For example, improving the impeller design to reduce fluid noise has a poor effect on suppressing mechanical noise such as motor noise.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a mounting base plate, on which a pipeline pump body is fixedly mounted at its upper end; a pump body noise reduction cavity is fixedly mounted at the lower outer end of the pipeline pump body; the inner part of the pump body noise reduction cavity is filled with a layer of sound-absorbing material; reinforcing ribs and sound-insulating protrusions are fixedly mounted on the inner wall of the pump body noise reduction cavity; a support platform is fixedly mounted at the upper end of the pipeline pump body; a fixed cover is fixedly mounted at the upper side of the support platform; a swing cover is rotatably connected to the upper end of the fixed cover via a damping shaft; ventilation holes are provided on both sides of the swing cover; a fixed frame is fixedly mounted at the outer end of the ventilation holes; and a sound-insulating cover for blocking the ventilation holes is rotatably connected to the upper end of the fixed frame via a damping shaft.

[0007] The pump body has a pump inlet pipe and a pump outlet pipe fixedly connected to both sides of its lower end. The outer curved surfaces of the pump inlet pipe and the pump outlet pipe are respectively fixedly installed with mounting rings, and a silencer is fixedly installed inside the mounting ring.

[0008] Preferably, the mounting base plate has four through-holes at its four corners, which are symmetrically distributed around the four corners of the mounting base plate.

[0009] Preferably, there are several reinforcing ribs and sound-insulating protrusions, which are symmetrically distributed along the inner wall of the noise reduction cavity of the pump body.

[0010] Preferably, the inner walls of the fixed cover and the swing cover are respectively bonded with a layer of sound-absorbing material.

[0011] Preferably, there are several vent holes, which are symmetrically distributed on both sides of the swing cover, and connecting flanges are fixedly installed at the outer openings of the pump body inlet pipe and the pump body outlet pipe.

[0012] Preferably, the mounting rings are symmetrically distributed on the outer curved surfaces of the pump body inlet pipe and the pump body outlet pipe, respectively.

[0013] Preferably, the silencer is filled with a sound-absorbing material layer, which is composed of glass wool and polyester fiber sound-absorbing cotton.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention provides sound insulation and protection for the lower part of the pump body of the pipeline pump by filling the noise reduction cavity of the pump body with a layer of sound-absorbing material. The sound-absorbing material layer has a porous structure. When sound waves enter it, they cause the air molecules inside the material to vibrate. Due to the friction between the air molecules and the material fibers, the sound energy is converted into heat energy, thereby effectively absorbing the noise generated by the fluid flow and impeller rotation in the pump body and reducing the propagation of noise. At the same time, the reinforcing ribs inside the noise reduction cavity of the pump body can not only enhance the structural strength of the pump body, but also change the propagation path of the sound waves, so that the sound waves are reflected and scattered multiple times in the interlayer space. Each reflection and scattering will cause some loss of sound wave energy, thereby further consuming sound wave energy and reducing noise. The sound insulation protrusions increase the contact area between the sound waves and the sound-absorbing material, improve the sound absorption effect, and allow more sound waves to be absorbed by the sound-absorbing material.

[0016] This utility model also protects and insulates the motor section at the upper end of the pipeline pump body by using a fixed cover in conjunction with a swing cover. By swinging the swing cover open, the motor at the upper end of the pipeline pump body can be inspected and maintained. The air inside the fixed cover and swing cover is circulated and cooled through the vent holes to prevent the internal temperature of the fixed cover and swing cover from becoming too high. At the same time, in low-temperature environments, the soundproof cover is closed by swinging. When the soundproof cover is closed, it will block the outer end of the vent hole, thus blocking the vent hole for sound insulation. The silencer tube insulates and reduces noise in the pump body inlet pipe and pump body outlet pipe, so that the flow noise generated when the fluid flows inside the pump body inlet pipe and pump body outlet pipe is reduced, thereby achieving the effect of comprehensive noise reduction of the pipeline pump body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a pipeline pump noise reduction structure according to the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of a pipeline pump noise reduction structure according to the present invention;

[0019] Figure 3 This is a cross-sectional view of the overall structure of a pipeline pump noise reduction structure according to the present invention.

[0020] In the diagram: 1. Main body of the pipeline pump; 2. Noise reduction chamber of the pump body; 201. Reinforcing rib; 202. Sound insulation protrusion; 3. Support platform; 4. Fixed cover; 5. Swing cover; 6. Vent hole; 7. Fixed frame; 8. Sound insulation cover; 9. Pump body inlet pipe; 10. Pump body outlet pipe; 11. Connecting flange; 12. Mounting ring; 13. Silencer; 14. Mounting base plate; 15. Mounting hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution for a noise reduction structure for a pipeline pump: it includes a mounting base plate 14, and mounting holes 15 are provided through the four corners of the mounting base plate 14. There are four mounting holes 15, which are symmetrically distributed at the four corners of the mounting base plate 14, so that the mounting base plate 14 can be fixedly installed through the mounting holes 15 and mounting bolts.

[0023] The main body of the pipeline pump 1 is fixedly installed on the upper end of the mounting base plate 14. A pump body noise reduction cavity 2 is fixedly installed on the lower outer end of the main body of the pipeline pump 1. The pump body noise reduction cavity 2 is partially filled with a layer of sound-absorbing material. Reinforcing ribs 201 and sound-insulating protrusions 202 are fixedly installed on the inner wall of the pump body noise reduction cavity 2, and there are several reinforcing ribs 201 and sound-insulating protrusions 202, symmetrically distributed along the inner wall of the pump body noise reduction cavity 2. A support platform 3 is fixedly installed on the upper end of the pipeline pump main body 1, and a fixing cover 4 is fixedly installed on the upper side of the support platform 3. The upper end of the fixed cover 4 is rotatably connected to the swing cover 5 via a damping shaft. The inner walls of the fixed cover 4 and the swing cover 5 are respectively bonded with sound-absorbing material layers, so that the motor part at the upper end of the pipeline pump body 1 is protected and soundproofed by the fixed cover 4 and the swing cover 5. The swing cover 5 has several ventilation holes 6 on both sides, which are symmetrically distributed on both sides of the swing cover 5. The outer end of the ventilation hole 6 is fixedly installed with a fixed frame 7. The upper end of the fixed frame 7 is rotatably connected to a soundproof cover 8 for blocking the ventilation hole 6 via a damping shaft.

[0024] The lower ends of the main body 1 of the pipeline pump are respectively connected to the pump body inlet pipe 9 and the pump body outlet pipe 10. The outer openings of the pump body inlet pipe 9 and the pump body outlet pipe 10 are respectively fixedly installed with connecting flanges 11, so that the pump body inlet pipe 9 and the pump body outlet pipe 10 are connected to the external inlet and outlet pipes through the connecting flanges 11. The outer curved surfaces of the pump body inlet pipe 9 and the pump body outlet pipe 10 are respectively fixedly installed with mounting rings 12, and the mounting rings 12 are symmetrically distributed with respect to the outer curved surfaces of the pump body inlet pipe 9 and the pump body outlet pipe 10. The inner side of the mounting rings 12 is fixedly installed with a silencer 13, and the silencer 13 is filled with a sound-absorbing material layer, which is composed of glass wool and polyester fiber sound-absorbing cotton.

[0025] Working principle: In use, this utility model provides sound insulation protection for the lower part of the pump body 1 by filling the sound-absorbing material layer inside the pump body noise reduction cavity 2. The sound-absorbing material layer has a porous structure. When sound waves enter it, they will cause the air molecules inside the material to vibrate. Due to the friction between the air molecules and the material fibers, the sound energy is converted into heat energy, thereby effectively absorbing the noise generated by the fluid flow and impeller rotation inside the pump body and reducing the propagation of noise. At the same time, the reinforcing ribs 201 inside the pump body noise reduction cavity 2 can not only enhance the structural strength of the pump body, but also change the propagation path of the sound waves, so that the sound waves are reflected and scattered multiple times in the interlayer space. Each reflection and scattering will cause some loss of sound wave energy, thereby further consuming sound wave energy and reducing noise. The sound insulation protrusions 202 increase the contact area between the sound waves and the sound-absorbing material, improve the sound absorption effect, and allow more sound waves to be absorbed by the sound-absorbing material.

[0026] The fixed cover 4 and the swing cover 5 are used to protect and insulate the motor part at the upper end of the pipeline pump body 1. By swinging the swing cover 5, the motor at the upper end of the pipeline pump body 1 can be inspected and maintained. The air inside the fixed cover 4 and the swing cover 5 can circulate and dissipate heat through the vent hole 6 to prevent the internal temperature of the fixed cover 4 and the swing cover 5 from getting too high. At the same time, in low temperature environment, the sound insulation cover 8 is closed by swinging. When the sound insulation cover 8 swings closed, it will block the outer end of the vent hole 6, so that the sound insulation cover 8 blocks the vent hole 6 and insulates the sound. The silencer 13 is used to insulate and reduce noise in the pump body inlet pipe 9 and pump body outlet pipe 10. When the fluid flows in the pump body inlet pipe 9 and pump body outlet pipe 10, the noise generated by the flow is reduced, so as to achieve the effect of comprehensive noise reduction of the pipeline pump body 1.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe pump noise reduction structure, characterized by: The system includes a mounting base plate (14), on which a pipeline pump body (1) is fixedly mounted. A pump body noise reduction cavity (2) is fixedly mounted on the lower outer end of the pipeline pump body (1). The pump body noise reduction cavity (2) is partially filled with a layer of sound-absorbing material. A reinforcing rib (201) and a sound insulation protrusion (202) are fixedly mounted on the inner wall of the pump body noise reduction cavity (2). A support platform (3) is fixedly mounted on the upper end of the pipeline pump body (1). A fixed cover (4) is fixedly mounted on the upper side of the support platform (3). A swing cover (5) is rotatably connected to the upper end of the fixed cover (4) through a damping shaft. Ventilation holes (6) are opened on both sides of the swing cover (5). A fixed frame (7) is fixedly mounted on the outer end of the ventilation hole (6). A sound insulation cover (8) for blocking the ventilation hole (6) is rotatably connected to the upper end of the fixed frame (7) through a damping shaft. The lower ends of the pipeline pump body (1) are respectively connected to the pump body inlet pipe (9) and the pump body outlet pipe (10). The outer curved surfaces of the pump body inlet pipe (9) and the pump body outlet pipe (10) are respectively fixedly installed with mounting rings (12), and the inner side of the mounting rings (12) is fixedly installed with silencers (13).

2. The pipe pump noise reduction structure of claim 1, wherein: The mounting base plate (14) has mounting holes (15) through its four corners, and there are four mounting holes (15) symmetrically distributed at the four corners of the mounting base plate (14).

3. The pipe pump noise reduction structure of claim 2, wherein: There are several reinforcing ribs (201) and sound insulation protrusions (202), which are symmetrically distributed along the inner wall of the pump body noise reduction cavity (2).

4. The pipe pump noise reduction structure of claim 3, wherein: The inner walls of the fixed cover (4) and the swing cover (5) are respectively bonded with a layer of sound-absorbing material.

5. The pipe pump noise reduction structure of claim 4, wherein: There are several vent holes (6), which are symmetrically distributed on both sides of the swing cover (5). Connecting flanges (11) are fixedly installed at the outer openings of the pump body inlet pipe (9) and the pump body outlet pipe (10).

6. The pipe pump noise reduction structure of claim 5, wherein: The mounting rings (12) are symmetrically distributed on the outer curved surfaces of the pump body inlet pipe (9) and the pump body outlet pipe (10), respectively.

7. The pipe pump noise reduction structure of claim 6, wherein: The silencer (13) is filled with a sound-absorbing material layer, which is composed of glass wool and polyester fiber sound-absorbing cotton.

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