Liquid pump with noise reduction mechanism

Abstract

The utility model discloses a liquid pump with a noise reduction mechanism, which comprises a liquid pump body, an impeller is movably mounted in the liquid pump body, a driving shaft is fixedly mounted on the impeller in the liquid pump body, and a liquid outlet pipe is fixedly mounted at the top of the liquid pump body. A liquid inlet pipe is fixedly mounted at the bottom of the liquid pump body, and a fixed seat is fixedly mounted on the outer side of the liquid pump body; the outer side of the liquid pump body is wrapped with a first noise reduction frame and a second noise reduction frame, the second noise reduction frame comprises an outer noise reduction base covering the outer side of the liquid pump body, and the outer side of the outer noise reduction base is wrapped with an inner noise reduction base. According to the liquid pump with the noise reduction mechanism, noise generated when the pump body works can be effectively absorbed, reflection and transmission of sound are reduced, and therefore the noise generated when the pump operates is controlled within a small range, interference to the surrounding environment and personnel is avoided, and creation of a relatively quiet working and living environment is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of liquid pumps, in particular to a liquid pump provided with a noise reduction mechanism. Background Art

[0002] Liquid pumps mainly include centrifugal pumps and axial flow pumps. When the centrifugal pump is working, the liquid fills the pump casing and the impeller rotates at high speed. The liquid generates high speed under the action of centrifugal force. The high-speed liquid passes through the gradually expanding pump casing channel, and the dynamic pressure head is converted into a static pressure head, thereby realizing the transportation and pressurization of the liquid; the centrifugal pump has a compact structure, can transport a variety of fluids, has a wide range of flow and head, is suitable for mildly corrosive liquids, has uniform flow, stable operation and low vibration; the impeller in the axial flow pump is designed to be axial flow type and has a very high speed; when the impeller rotates, the blades push the liquid to flow axially, thereby realizing the transportation of the liquid; the axial flow pump has the characteristics of large flow and low head, and is suitable for occasions with large flow and low head, such as urban water supply and drainage, agricultural irrigation, etc.

[0003] When the liquid pump is working, it will generate a lot of noise. If people nearby are exposed to the high noise environment for a long time, the noise will interfere with the surrounding environment and personnel, and will also damage the hearing of the operators. Utility Model Content

[0004] The purpose of the present utility model is to provide a liquid pump provided with a noise reduction mechanism to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, a liquid pump provided with a noise reduction mechanism is provided, comprising a liquid pump body, wherein an impeller is movably installed inside the liquid pump body, and a drive shaft is fixedly installed on the impeller inside the liquid pump body, and at the same time, a liquid outlet pipe is fixedly installed on the top of the liquid pump body, and a liquid inlet pipe is fixedly installed on the bottom of the liquid pump body, and a fixing seat is fixedly installed on the outside of the liquid pump body; the outside of the liquid pump body is respectively wrapped with a first noise reduction frame and a second noise reduction frame, the second noise reduction frame comprises an outer noise reduction seat covering the outside of the liquid pump body, and the outer side of the outer noise reduction seat is wrapped with an inner noise reduction seat, and at the same time, the inner noise reduction seat is fixedly arranged inside the second noise reduction frame where a accommodating groove is opened.

[0006] Preferably, the internal structures of the first noise reduction frame and the second noise reduction frame are consistent, and the cross-sections of the first noise reduction frame and the second noise reduction frame are both "C"-shaped, and the outer sides of the circumferences of the first noise reduction frame and the second noise reduction frame are fixed with an annular fixed edge.

[0007] Preferably, six groups of fixing studs are evenly arranged on the outer side of the first noise reduction frame, and the six groups of fixing studs pass through the through holes provided on the second noise reduction frame and are fixedly connected by nuts.

[0008] Preferably, the cross-section of the inner noise reduction seat fixed inside the second noise reduction frame is "C"-shaped, and the inner noise reduction seat is made of sound-insulating and vibration-isolating rubber. At the same time, the cross-sections of the inner noise reduction seat and the outer noise reduction seat are layered.

[0009] Preferably, the outer noise reduction seat is made of polyester fiber cotton and has a "C"-shaped cross-section, and a sound-absorbing core is fixedly installed inside the outer noise reduction seat, and a sound-absorbing space is opened inside the outer noise reduction seat.

[0010] Preferably, a plurality of groups of sound absorbing holes are evenly arranged on the surface of the sound absorbing core, and the distance between two adjacent groups of sound absorbing holes is consistent, and the sound absorbing holes are arranged in a regular hexagonal pattern.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model is fixed to the surface of the liquid pump body through the first noise reduction frame and the second noise reduction frame; the interior of the first noise reduction frame and the second noise reduction frame are both provided with an inner noise reduction seat and an outer noise reduction seat; the inner noise reduction seat is made of sound-insulating and shock-isolating rubber, and the outer noise reduction seat is made of polyester fiber cotton, which can absorb and reduce the noise of the liquid pump body when it is working; at the same time, it can effectively absorb the noise generated by the pump body when it is working, reduce the reflection and propagation of sound, thereby controlling the noise during the operation of the pump within a smaller range, avoiding interference with the surrounding environment and personnel, and helping to create a relatively quiet working and living environment;

[0013] 2. The utility model evenly opens multiple groups of sound-absorbing holes on the surface of the sound-absorbing core inside the inner noise reduction seat; when sound waves come into contact with a large number of sound-absorbing holes, the sound-absorbing holes can make it easier for the sound waves to enter the interior of the material; the sound waves are constantly reflected, refracted and rubbed in the sound-absorbing holes, so that the sound energy is converted into heat energy and consumed, thereby more effectively reducing the reflection and propagation of sound, improving the sound absorption efficiency, and avoiding damage to the operator's hearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Bottom view of

[0016] Figure 3 for Figure 1 A top view of

[0017] Figure 4 is a schematic diagram of the second noise reduction frame;

[0018] Figure 5 for Figure 4 Schematic diagram of the cross-section structure.

[0019] Numbers in the figure: 1. Liquid pump body; 11. Fixed seat; 12. Drive shaft; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. First noise reduction frame; 5. Second noise reduction frame; 50. Fixed edge; 51. Receiving groove; 52. Inner noise reduction seat; 53. Outer noise reduction seat; 54. Sound-absorbing space; 55. Sound-absorbing core; 56. Sound-absorbing hole. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides a liquid pump provided with a noise reduction mechanism, comprising a liquid pump body 1, an impeller movably installed inside the liquid pump body 1, and a drive shaft 12 fixedly installed on the impeller inside the liquid pump body 1, and a liquid outlet pipe 3 fixedly installed on the top of the liquid pump body 1, and a liquid inlet pipe 2 fixedly installed on the bottom of the liquid pump body 1, and a fixing seat 11 fixedly installed on the outside of the liquid pump body 1; the outside of the liquid pump body 1 is respectively wrapped with a first noise reduction frame 4 and a second noise reduction frame 5, the second noise reduction frame 5 includes an outer noise reduction seat 53 covering the outside of the liquid pump body 1, and the outer side of the outer noise reduction seat 53 is wrapped with an inner noise reduction seat 52, and the inner noise reduction seat 52 is fixedly arranged inside the second noise reduction frame 5 where a accommodating groove 51 is opened.

[0021] Working principle: When in use, first wrap the first noise reduction frame 4 and the second noise reduction frame 5 on both sides of the liquid pump body 1 respectively, and the first noise reduction frame 4 passes through the through holes opened on the second noise reduction frame 5 through six sets of fixing studs, and is fixedly connected by nuts, and the first noise reduction frame 4 and the second noise reduction frame 5 are fixed to the surface of the liquid pump body 1; the interior of the first noise reduction frame 4 and the second noise reduction frame 5 are provided with an inner noise reduction seat 52 and an outer noise reduction seat 53; the inner noise reduction seat 52 is made of sound-insulating and shock-isolating rubber, and the outer noise reduction seat 53 is polyester fiber cotton, which can absorb and reduce noise for the liquid pump body 1 when it is working; at the same time, it can It can effectively absorb the noise generated by the pump body when it is working, reduce the reflection and propagation of sound, thereby controlling the noise during the operation of the pump within a smaller range, avoiding interference with the surrounding environment and personnel, and helping to create a relatively quiet working and living environment; at the same time, a plurality of groups of sound-absorbing holes 56 are evenly arranged on the surface of the sound-absorbing core 55 inside the inner noise reduction seat 52; when the sound waves come into contact with the interior of a large number of sound-absorbing holes 56, the sound-absorbing holes 56 can make it easier for the sound waves to enter the interior of the material: the sound waves are continuously reflected, refracted and rubbed in the sound-absorbing holes 56, so that the sound energy is converted into heat energy and consumed, thereby more effectively reducing the reflection and propagation of sound and improving the sound absorption efficiency.

[0022] As a preferred embodiment, the internal structures of the first noise reduction frame 4 and the second noise reduction frame 5 are consistent, and the cross-sections of the first noise reduction frame 4 and the second noise reduction frame 5 are both "C"-shaped, and the outer sides of the circumferences of the first noise reduction frame 4 and the second noise reduction frame 5 are fixed with a ring-shaped fixed edge 50.

[0023] Six groups of fixing studs are evenly arranged on the outer side of the first noise reduction frame 4 , and the six groups of fixing studs pass through the through holes provided on the second noise reduction frame 5 and are fixedly connected by nuts.

[0024] As a preferred embodiment, the cross-section of the inner noise reduction seat 52 fixed inside the second noise reduction frame 5 is "C"-shaped, and the inner noise reduction seat 52 is made of sound-insulating and shock-isolating rubber. At the same time, the cross-sections of the inner noise reduction seat 52 and the outer noise reduction seat 53 are layered.

[0025] The outer noise reduction seat 53 is made of polyester fiber cotton and has a "C"-shaped cross-section. A sound-absorbing core 55 is fixedly installed inside the outer noise reduction seat 53, and a sound-absorbing space 54 is opened inside the outer noise reduction seat 53.

[0026] As a preferred embodiment, a plurality of groups of sound absorbing holes 56 are evenly formed on the surface of the sound absorbing core 55 , and the distance between two adjacent groups of sound absorbing holes 56 is consistent. Meanwhile, the sound absorbing holes 56 are arranged in a regular hexagonal pattern.

Claims

1. A liquid pump provided with a noise reduction mechanism, comprising a liquid pump body (1), characterized in that: An impeller is movably installed inside the liquid pump body (1), and a drive shaft (12) is fixedly installed on the impeller inside the liquid pump body (1). At the same time, a liquid outlet pipe (3) is fixedly installed on the top of the liquid pump body (1), and a liquid inlet pipe (2) is fixedly installed on the bottom of the liquid pump body (1). A fixing seat (11) is fixedly installed on the outside of the liquid pump body (1); the outside of the liquid pump body (1) is respectively wrapped with a first noise reduction frame (4) and a second noise reduction frame (5), the second noise reduction frame (5) includes an outer noise reduction seat (53) covering the outside of the liquid pump body (1), and the outer side of the outer noise reduction seat (53) is wrapped with an inner noise reduction seat (52), and the inner noise reduction seat (52) is fixedly arranged inside the second noise reduction frame (5) where a receiving groove (51) is opened.

2. A liquid pump with a noise reduction mechanism according to claim 1, characterized in that: The internal structures of the first noise reduction frame (4) and the second noise reduction frame (5) are consistent, and the cross-sections of the first noise reduction frame (4) and the second noise reduction frame (5) are both "C"-shaped. The outer sides of the circumferences of the first noise reduction frame (4) and the second noise reduction frame (5) are both fixedly provided with an annular fixed edge (50).

3. A liquid pump with a noise reduction mechanism according to claim 2, characterized in that: Six groups of fixing studs are evenly arranged on the outer side of the first noise reduction frame (4), and the six groups of fixing studs pass through the through holes provided on the second noise reduction frame (5) and are fixedly connected by nuts.

4. The liquid pump provided with a noise reduction mechanism according to claim 2, characterized in that: The cross section of the inner noise reduction seat (52) fixedly arranged inside the second noise reduction frame (5) is set in a "C" shape, and the inner noise reduction seat (52) is made of sound insulation and vibration isolation rubber. At the same time, the cross sections of the inner noise reduction seat (52) and the outer noise reduction seat (53) are set in layers.

5. The liquid pump provided with a noise reduction mechanism according to claim 4, characterized in that: The outer noise reduction seat (53) is a structure made of polyester fiber cotton with a "C"-shaped cross section, and a sound absorbing core (55) is fixedly installed inside the outer noise reduction seat (53). At the same time, a sound absorbing space (54) is opened inside the outer noise reduction seat (53).

6. The liquid pump provided with a noise reduction mechanism according to claim 5, characterized in that: The surface of the sound-absorbing core (55) is evenly provided with a plurality of groups of sound-absorbing holes (56), and the distance between two adjacent groups of sound-absorbing holes (56) is consistent. Meanwhile, the sound-absorbing holes (56) are arranged in a regular hexagonal pattern.

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