Mute variable-frequency water supply device

Abstract

The utility model relates to the technical field of marine devices, and discloses a mute variable-frequency water supply device which comprises a motor, the bottom of the motor is connected with a heat dissipation cavity, the bottom of the heat dissipation cavity is provided with a pressurizing cavity, the bottom of the pressurizing cavity is provided with a buffering cavity, one side of the buffering cavity is a water inlet cavity, and the other side of the buffering cavity is a water outlet cavity. A pump cavity and an isolation cavity are formed in the booster cavity, a rotating shaft is connected to an output shaft of the motor, penetrates through the heat dissipation cavity and the isolation cavity and extends into the pump cavity, the water inlet end of the pump cavity is communicated with the water inlet cavity, the water outlet end of the pump cavity is communicated with a plurality of water outlet pipes, and the water outlet pipes are communicated with the water outlet cavity. According to the device, the problem that a large amount of noise is generated due to the fact that water flow impacts the device is solved, impact of water inlet and water outlet on the device is reduced through the buffering cavity and the spiral water outlet pipe, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of marine devices, and more specifically, to a silent variable frequency water supply device. Background Art

[0002] The variable frequency water supply device uses a frequency converter to control the motor to continuously change the water pump speed while keeping constant feedback from the pressure or flow sensor, thereby continuously changing the water pump flow to adapt to the user's water demand. A lot of noise will be generated during its use.

[0003] The Chinese invention patent with application number 202311007180.1 discloses a silent water supply device that can effectively reduce noise. By setting a damping structure at the bottom of the equipment and on the pipeline, the vibration of each component is reduced, and at the same time, a sound insulation pad is affixed inside the box to reduce and block the generation and transmission of noise to achieve noise reduction. However, there are many baffle structures inside the water supply device, especially the pump body, and its own water flow and water pressure are relatively large, which makes the water flow have a greater impact force on the equipment in the baffle part, resulting in a large impact noise. However, the water supply devices currently on the market have failed to effectively reduce noise in this regard. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a silent variable frequency water supply device.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A silent variable frequency water supply device includes a motor, a heat dissipation chamber is connected to the bottom of the motor, a boost chamber is provided at the bottom of the heat dissipation chamber, a buffer chamber is provided at the bottom of the boost chamber, one side of the buffer chamber is a water inlet chamber, and the other side of the buffer chamber is a water outlet chamber, a pump chamber and an isolation chamber are provided in the boost chamber, a rotating shaft is connected to the output shaft of the motor, the rotating shaft passes through the heat dissipation chamber and the isolation chamber and extends into the pump chamber, an impeller is installed on the rotating shaft, the impeller is in the pump chamber, the water inlet end of the pump chamber is connected to the water inlet chamber, the water outlet end of the pump chamber is connected to a plurality of water outlet pipes, the water outlet pipes are connected to the water outlet chamber, and the water outlet pipes are composed of a plurality of tangent spiral tubes.

[0007] The present invention is further configured as follows: a pump casing is provided on the outside of the pump chamber, the water outlet pipe is buried in the pump casing, the water outlet pipe includes pipe one, pipe two and pipe three, the pipe one, pipe two and pipe three are spiral pipes smoothly connected to each other, one end of the pipe one is opened at the water outlet end of the pump chamber, and the end of the pipe three away from the pipe two is opened in the water outlet chamber.

[0008] The utility model is further configured as follows: a partition is provided in the buffer chamber, the partition separates the water inlet chamber and the water outlet chamber, the water inlet chamber is connected to a water inlet, the water outlet chamber is connected to a water outlet, the partition is provided with a buffer cone on one side of the water inlet chamber, the buffer cone is coaxial with the water inlet, the tip of the buffer cone faces the water inlet, the water inlet chamber is connected to the pump chamber through a water inlet pipe, and the water inlet pipe is provided with a bell mouth on one side of the water inlet chamber.

[0009] The utility model is further configured as follows: a base plate is provided on the side of the pump chamber facing away from the motor, a fixed column is connected in the middle of the base plate, the end of the rotating shaft is rotatably connected to the fixed column, and the rotating shaft and the fixed column are connected by a mechanical seal and a bearing.

[0010] The utility model is further configured as follows: a vibration reduction mechanism is provided in the isolation cavity, and the vibration reduction mechanism is arranged around the rotating shaft.

[0011] The utility model is further configured as follows: the vibration damping mechanism includes a connecting ring, a rubber pad is provided on the inner ring surface of the connecting ring, the inner wall of the rubber pad is spaced apart from the rotating shaft, a plurality of connecting rods are symmetrically connected on the outer ring surface of the connecting ring, a plurality of guide columns are correspondingly provided on the inner wall of the isolation cavity, the guide columns and the connecting rods are both arranged along the radial direction of the rotating shaft, the guide column is sleeved on the connecting rod, and one end of the connecting rod extending into the guide column is connected to a spring, and the spring is fixed in the guide column.

[0012] The advantages of the utility model are:

[0013] 1. A buffer chamber is provided. When water flows into the water inlet through the water inlet, the flow area suddenly increases, thereby reducing the flow rate and slowing down the impact of the incoming water on the partition. At the same time, a buffer cone is provided on the side of the partition facing the water inlet. When the water flows towards the partition, it is guided by the conical surface and the direction of the force is dispersed. It will not act on the partition in the vertical direction, thereby reducing the noise caused by the water impacting the partition.

[0014] 2. A vibration reduction mechanism is provided in the isolation chamber. A rubber pad is provided on the inner side of the connecting ring of the vibration reduction mechanism. A number of connecting rods are connected to the outer side of the connecting ring. A spring is provided between the connecting rod and the guide column. When the rotating shaft vibrates, the flexible contact and resistance of the rubber pad and the spring prompt the rotating shaft to reset, thereby reducing the vibration of the rotating shaft and the generation of mechanical noise.

[0015] 3. A fixed column is provided on the bottom plate at the bottom of the pump chamber. The end of the rotating shaft is rotatably connected to the fixed column through a mechanical seal and a bearing. That is, the rotating shafts on both sides of the impeller are fixed in the axial direction, thereby reducing the vibration of the impeller during rotation and reducing the generation of mechanical noise;

[0016] 4. The water outlet pipe of the pump chamber is set as several sections of spiral pipes that are smoothly connected to each other, which reduces the impact on the pipe wall when the water flow changes direction, thereby reducing the generation of water outlet noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 For the Figure 1 The AA line cross-section shown;

[0019] Figure 3 This is a schematic diagram of the water outlet pipe structure of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a single water outlet pipe of the utility model;

[0021] Figure 5 for Figure 4 The top view shown;

[0022] Figure 6 for Figure 2 An enlarged view of part B is shown;

[0023] Figure 7 for Figure 2 An enlarged view of part C is shown;

[0024] In the figure: 1. Motor; 11. Rotating shaft; 2. Heat dissipation chamber; 3. Pressurization chamber; 31. Pump chamber; 32. Isolation chamber; 33. Water inlet pipe; 34. Water outlet pipe; 341. Pipe 1; 342. Pipe 2; 343. Pipe 3; 35. Pump casing; 36. Bottom plate; 361. Fixed column; 4. Buffer chamber; 41. Water inlet chamber; 42. Water outlet chamber; 43. Partition; 44. Buffer cone; 5. Water inlet; 6. Water outlet; 7. Impeller; 8. Vibration reduction mechanism; 81. Connecting ring; 82. Rubber pad; 83. Connecting rod; 84. Guide column; 85. Spring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0028] See also Figure 1-7 , the utility model provides the following technical solutions:

[0029] A silent variable frequency water supply device includes a motor 1. A heat dissipation chamber 2 is connected to the bottom of the motor 1 to prevent heat from the motor 1 from interfering with the water supply. A pressurization chamber 3 is provided at the bottom of the heat dissipation chamber 2. Water is pressurized and transported in the pressurization chamber 3. A buffer chamber 4 is provided at the bottom of the pressurization chamber 3. One side of the buffer chamber 4 is a water inlet chamber 41, and the other side of the buffer chamber 4 is a water outlet chamber 42. The water inlet chamber 41 is relatively large. When water enters, the flow area suddenly increases, causing the flow rate to decrease rapidly, thereby slowing the impact of the water on the water supply device and reducing the generation of impact noise.

[0030] The boost chamber 3 is provided with a pump chamber 31 and an isolation chamber 32. The output shaft of the motor 1 is connected to a rotating shaft 11, which passes through the heat dissipation chamber 2 and the isolation chamber 32 and extends into the pump chamber 31. The rotating shaft 11 is mounted with an impeller 7. The impeller 7 is in the pump chamber 31 to boost and transport the water flow.

[0031] The water inlet end of the pump chamber 31 is connected to the water inlet chamber 41, and the water outlet end of the pump chamber 31 is connected to a plurality of water outlet pipes 34, which are connected to the water outlet chamber 42. The water outlet pipe 34 is composed of a plurality of tangential spiral tubes. The pressurized water flow is discharged through the water outlet pipe 34. The inner wall of the water outlet pipe 34 is smooth. When the water flow changes direction in the water outlet pipe 34, the impact on the pipe wall is small, thereby reducing the generation of impact noise. When the water flow enters the water outlet chamber 42 from the water outlet pipe 34, the flow area becomes larger and the flow velocity decreases rapidly, thereby reducing the impact of the water flow on the wall of the water outlet chamber 42, reducing the generation of impact noise, and enhancing the noise reduction effect.

[0032] A pump casing 35 is provided on the outside of the pump chamber 31, and a water outlet pipe 34 is buried in the pump casing 35. The water outlet pipe 34 includes pipe 1 341, pipe 2 342 and pipe 3 343. Pipe 1 341, pipe 2 342 and pipe 3 343 are spiral pipes smoothly connected to each other. One end of pipe 1 341 is opened at the water outlet end of the pump chamber 31, and the end of pipe 343 away from pipe 2 342 is opened in the water outlet chamber 42.

[0033] A partition 43 is provided in the buffer chamber 4, which separates the water inlet chamber 41 from the water outlet chamber 42. The water inlet chamber 41 is connected to the water inlet 5, and the water outlet chamber 42 is connected to the water outlet 6. A buffer cone 44 is provided on one side of the water inlet chamber 41 of the partition 43. The buffer cone 44 is coaxial with the water inlet 5, and the tip of the buffer cone 44 faces the water inlet 5. When the water flow enters the water inlet chamber 41 from the water inlet 5, it is first decelerated by the variable flow area, and the impact of the decelerated water flow on the partition 43 is reduced; when the water flow impacts the partition 43, the buffer cone 44 guides the flow and disperses the direction of the force, so that the water flow does not directly impact the partition 43 in the vertical direction, thereby reducing the impact force of the water flow on the partition 43 and reducing the generation of impact noise;

[0034] The water inlet chamber 41 is connected to the pump chamber 31 through the water inlet pipe 33 . The water inlet pipe 33 is provided with a bell mouth on one side of the water inlet chamber 41 , which can guide the water stored in the water inlet chamber 41 .

[0035] A base plate 36 is provided on the side of the pump chamber 31 facing away from the motor 1, and a fixing column 361 is connected in the middle of the base plate 36. The end of the rotating shaft 11 is rotatably connected to the fixing column 361. The rotating shaft 11 and the fixing column 361 are connected by a mechanical seal and a bearing, which changes the free state of the end of the rotating shaft 11, so that the impeller 7 is installed between the axially fixed structures at both ends, making the impeller 7 less likely to vibrate, thereby reducing the vibration noise of the rotating shaft 11 and the impeller 7.

[0036] A vibration damping mechanism 8 is provided in the isolation chamber 32. The vibration damping mechanism 8 includes a connecting ring 81. A rubber pad 82 is provided on the inner annular surface of the connecting ring 81. The inner wall of the rubber pad 82 is spaced apart from the rotating shaft 11. A plurality of connecting rods 83 are symmetrically connected to the outer annular surface of the connecting ring 81. A plurality of guide posts 84 are correspondingly provided on the inner wall of the isolation chamber 32. The guide posts 84 and the connecting rods 83 are both arranged radially along the rotating shaft 11. The guide posts 84 are sleeved on the connecting rods 83. One end of the connecting rod 83 extending into the guide posts 84 is connected to a spring 85, which is fixed within the guide posts 84.

[0037] When the shaft 11 vibrates, it contacts the rubber pad 82. The contact between the two is flexible and no impact noise is generated. The rubber pad 82 has a certain elasticity and can prevent the vibration of the shaft 11 to a certain extent.

[0038] The rotating shaft 11 vibrates, driving the connecting ring 81 to vibrate synchronously. When the connecting ring 81 moves, the connecting rod 83 thereon is driven. When the connecting rod 83 moves, the corresponding spring 85 connected thereto is driven to stretch or compress. When the spring 85 is deformed, a reverse force is generated, which drives the connecting rod 83 to reset, thereby pushing the rotating shaft 11 to reset. This can reduce the vibration of the rotating shaft 11, that is, reduce the generation of vibration noise, and has a good noise reduction effect.

[0039] Specifically, a buffer chamber 4 is provided. When water flows into the water inlet chamber 41 through the water inlet, the flow area suddenly increases, thereby reducing the flow rate and slowing down the impact of the incoming water on the partition. At the same time, a buffer cone 44 is provided on the side of the partition 43 facing the water inlet 5. When the water flows towards the partition 43, it is guided by the conical surface and the direction of the force is dispersed. The water does not act on the partition 43 in the vertical direction, thereby reducing the noise generated by the water impacting the partition 43.

[0040] A vibration damping mechanism 8 is disposed within the isolation chamber 32. A rubber pad 82 is disposed on the inner side of a connecting ring 81 of the vibration damping mechanism 8. A plurality of connecting rods 83 are connected to the outer side of the connecting ring 81. Springs 85 are disposed between the connecting rods 83 and guide posts 84. When the rotating shaft 11 vibrates, the flexible contact and resistance of the rubber pad 82 and the spring 85 cause the rotating shaft 11 to return to its original position, thereby reducing the vibration of the rotating shaft 11 and the generation of mechanical noise.

[0041] A fixing post 361 is provided on the bottom plate 36 at the bottom of the pump chamber 31. The end of the rotating shaft 11 is rotatably connected to the fixing post 361 via a mechanical seal and a bearing. That is, the rotating shaft 11 on both sides of the impeller 7 is fixed in the axial direction, thereby reducing the vibration of the impeller 7 during rotation and reducing the generation of mechanical noise.

[0042] The water outlet pipe 34 of the pump chamber 31 is configured as a plurality of spiral pipe sections smoothly connected to each other, which reduces the impact on the pipe wall when the water flow changes direction, thereby reducing the generation of water outlet noise.

[0043] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar pairs of elements and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A silent variable frequency water supply device, comprising a motor (1), characterized in that: The motor (1) is connected to a heat dissipation chamber (2) at the bottom, a pressurization chamber (3) is provided at the bottom of the heat dissipation chamber (2), a buffer chamber (4) is provided at the bottom of the pressurization chamber (3), one side of the buffer chamber (4) is a water inlet chamber (41), and the other side of the buffer chamber (4) is a water outlet chamber (42), a pump chamber (31) and an isolation chamber (32) are provided in the pressurization chamber (3), an output shaft of the motor (1) is connected to a rotating shaft (11), and the rotating shaft (1 1) penetrates the heat dissipation cavity (2) and the isolation cavity (32) and extends into the pump cavity (31); an impeller (7) is mounted on the rotating shaft (11); the impeller (7) is in the pump cavity (31); the water inlet end of the pump cavity (31) is connected to the water inlet cavity (41); the water outlet end of the pump cavity (31) is connected to a plurality of water outlet pipes (34); the water outlet pipes (34) are connected to the water outlet cavity (42); the water outlet pipes (34) are composed of a plurality of tangential spiral pipes.

2. A silent frequency conversion water supply device according to claim 1, characterized in that: A pump housing (35) is provided outside the pump chamber (31), and the water outlet pipe (34) is buried in the pump housing (35). The water outlet pipe (34) includes a first pipe (341), a second pipe (342), and a third pipe (343). The first pipe (341), the second pipe (342), and the third pipe (343) are spiral pipes smoothly connected to each other. One end of the first pipe (341) is opened at the water outlet end of the pump chamber (31), and the end of the third pipe (343) facing away from the second pipe (342) is opened in the water outlet chamber (42).

3. A silent frequency conversion water supply device according to claim 2, characterized in that: A partition (43) is provided in the buffer chamber (4), the partition (43) separating the water inlet chamber (41) from the water outlet chamber (42), the water inlet chamber (41) being connected to a water inlet (5), the water outlet chamber (42) being connected to a water outlet (6), the partition (43) being provided with a buffer cone (44) on one side of the water inlet chamber (41), the buffer cone (44) being coaxial with the water inlet (5), the tip of the buffer cone (44) facing the water inlet (5), the water inlet chamber (41) being connected to the pump chamber (31) via a water inlet pipe (33), the water inlet pipe (33) being provided with a bell mouth on one side of the water inlet chamber (41).

4. The silent frequency conversion water supply device according to claim 1, characterized in that: A base plate (36) is provided on the side of the pump chamber (31) facing away from the motor (1), a fixing column (361) is connected in the middle of the base plate (36), the end of the rotating shaft (11) is rotatably connected to the fixing column (361), and the rotating shaft (11) and the fixing column (361) are connected via a mechanical seal and a bearing.

5. The silent frequency conversion water supply device according to claim 1, characterized in that: A vibration reduction mechanism (8) is provided in the isolation cavity (32), and the vibration reduction mechanism (8) is arranged around the rotating shaft (11).

6. The silent frequency conversion water supply device according to claim 5, characterized in that: The vibration damping mechanism (8) includes a connecting ring (81), a rubber pad (82) is provided on the inner ring surface of the connecting ring (81), the inner wall of the rubber pad (82) is spaced apart from the rotating shaft (11), a plurality of connecting rods (83) are symmetrically connected on the outer ring surface of the connecting ring (81), a plurality of guide columns (84) are correspondingly provided on the inner wall of the isolation cavity (32), the guide columns (84) and the connecting rods (83) are both provided along the radial direction of the rotating shaft (11), the guide columns (84) are sleeved on the connecting rods (83), one end of the connecting rod (83) extending into the guide columns (84) is connected to a spring (85), and the spring (85) is fixed in the guide columns (84).

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