Rotation stopping device for suction inlet of water pump

Abstract

The utility model discloses a rotation stopping device for a suction inlet of a water pump, and belongs to the field of water supply systems of pipeline pump sets. The rotation stopping device comprises an installation bottom plate welded to the position, corresponding to a water pump suction inlet, in the expansion water tank, and a through hole formed in the installation bottom plate and communicated with the water pump suction inlet. The eight flow guide plates are distributed on the side, away from the water pump suction inlet, of the mounting bottom plate in an annular array mode and welded to the mounting bottom plate, and the top anti-rotation plates are welded to the sides, away from the mounting bottom plate, of the eight flow guide plates. And the guide plate is a V-shaped metal plate bending piece. According to the rotation stopping device, the liquid level of a water pump inlet is lowered by arranging the mounting bottom plate, the through hole, the eight flow guide plates and the top rotation preventing plate, an original water pump suction inlet is divided into eight water inlet channels, liquid can be dispersed into the water pump more evenly, the overall suction force and the flow speed of the water pump suction inlet are effectively reduced, and the water pump efficiency is improved. Therefore, vortexes and bubbles generated due to too high flow speed can be reduced, and the operation stability of the water pump is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline pump group water supply system, in particular to a rotation-stopping device for a water pump suction port. Background Art

[0002] Industrial production is inseparable from the pipeline pump water supply system, in which the water pump and expansion tank play a vital role.

[0003] The suction port of a normal water pump is connected to an expansion tank through a pipe. After the connection, the suction port of the water pump is located at the bottom of the expansion tank. The top of the water tank is usually a non-sealed water tank. Air exists on the top of the water tank. When the water pump is turned on, the suction force is concentrated on the suction port of the water pump. The greater the power of the water pump, the greater the suction force. The open suction port is very easy to form a vortex. Air will enter the pipeline with the vortex, resulting in unstable pipeline pressure. At the same time, the entry of air will cause cavitation inside the pipeline, affecting the service life of components.

[0004] Therefore, a water pump suction port anti-rotation device is needed to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a water pump suction port anti-rotation device, aiming to solve the problem proposed in the background technology that a traditional open suction port is very easy to form a vortex, air will enter the inside of the pipeline along the vortex, resulting in unstable pipeline pressure, and at the same time the entry of air will cause cavitation inside the pipeline to affect the service life of components.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water pump suction port anti-rotation device, comprising a mounting base plate welded at a position corresponding to the water pump suction port in an expansion water tank, a through hole opened on the mounting base plate and connected to the water pump suction port, eight guide plates distributed in a circular array on a side of the mounting base plate away from the water pump suction port and welded to the mounting base plate, and a top anti-rotation plate welded to the eight guide plates on a side away from the mounting base plate; by providing the mounting base plate, the through hole, the eight guide plates and the top anti-rotation plate, the original water pump suction port can be divided into eight water inlet channels, so that the liquid is more evenly dispersed into the water pump, effectively reducing the overall suction and flow rate of the water pump suction port, thereby reducing vortices and bubbles generated by excessive flow rate, and improving the operating stability of the water pump.

[0009] In order to further slow down the flow rate of the liquid at the suction port of the water pump, the guide plate is a V-shaped sheet metal bent part; the V-shaped structure can more easily guide the liquid to flow along a predetermined path, making the liquid more uniform and stable, and further eliminating adverse factors such as turbulence and vortex in the liquid, thereby reducing the resistance, noise and vibration of the water pump.

[0010] Preferably, in order to facilitate processing and installation, the mounting base plate and the top anti-rotation plate are both square planar sheet metal parts; square planar sheet metal parts are simple to process and can be quickly formed through processes such as cutting, bending and welding, thereby reducing manufacturing costs.

[0011] Preferably, in order to facilitate the installation of the anti-rotation device, the size of the top anti-rotation plate is smaller than the size of the installation base plate; the smaller size of the top anti-rotation plate makes it easier to operate and position during installation, and can avoid interference with other components in the expansion water tank.

[0012] Preferably, in order to ensure the operation of the water pump, the diameter of the through hole is 1.5 times the diameter of the water pump suction port; by increasing the diameter of the through hole, which is 1.5 times larger than the diameter of the water pump suction port, the liquid flow entering the water pump can be effectively increased, ensuring that the water pump can obtain sufficient liquid during operation, thereby improving its working efficiency and performance.

[0013] Preferably, in order to enhance the anti-rotation effect, the height of the guide plate is equal to the diameter of the through hole; since the height of the guide plate is equal to the diameter of the through hole, the liquid can be further and more smoothly dispersed in all directions when passing through the through hole and entering the water pump suction port, thereby avoiding the formation of vortices caused by excessive liquid speed or uneven direction.

[0014] Preferably, in order to enhance the stability of the guide plate and optimize the liquid dynamics, the inner side of the guide plate is flush with the edge of the through hole, and the outer side of the guide plate is flush with the edge of the top anti-rotation plate; the inner side of the guide plate is flush with the edge of the through hole, ensuring that the liquid can transition smoothly when entering the through hole, and at the same time the outer side of the guide plate is flush with the edge of the top anti-rotation plate, which can make the structure of the entire guide plate more solid and stable, reduce stress concentration and deformation that may be caused by uneven edges, and improve the durability and reliability of the guide plate.

[0015] (III) Beneficial effects

[0016] The anti-rotation device lowers the liquid level at the water pump inlet by setting a mounting bottom plate, through holes, eight guide plates and a top anti-rotation plate, so that the original water pump suction port is divided into eight water inlet channels, so that the liquid enters the water pump more evenly, effectively reducing the overall suction force and flow rate of the water pump suction port, thereby reducing vortices and bubbles generated by excessive flow rate, and improving the running stability of the water pump;

[0017] The anti-rotation device, by providing a guide plate with a V-shaped structure, can make it easier for the liquid to flow along a predetermined path, making the liquid more uniform and stable, and further eliminating adverse factors such as turbulence and vortexes in the liquid, thereby reducing the resistance, noise and vibration of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the application of a water pump suction port anti-rotation device;

[0019] Figure 2 A schematic diagram of the structure of a water pump suction port anti-rotation device Figure 1 ;

[0020] Figure 3 A schematic diagram of the structure of a water pump suction port anti-rotation device Figure 2 ;

[0021] Figure 4 This is an exploded view of a water pump suction inlet anti-rotation device.

[0022] In the figure:

[0023] 1. Expansion tank; 11. Water pump suction port;

[0024] 2. Install the base plate; 21. Through hole;

[0025] 3. Guide plate;

[0026] 4. Top anti-rotation plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides a water pump suction port anti-rotation device, such as Figure 1-Figure 4 As shown, the anti-rotation device includes a mounting base plate 2 welded at a position corresponding to the water pump suction port 11 in the expansion water tank 1, a through hole 21 opened on the mounting base plate 2 and connected to the water pump suction port 11, eight guide plates 3 distributed in a circular array on the side of the mounting base plate 2 away from the water pump suction port 11 and welded to the mounting base plate 2, and a top anti-rotation plate 4 welded to the eight guide plates 3 on the side away from the mounting base plate 2; the guide plate 3 is a V-shaped sheet metal bending part.

[0029] When in use, first weld the mounting base plate 2 to the position of the water pump suction port 11 inside the expansion water tank 1, and ensure that the through hole 21 on the mounting base plate 2 is connected to the water pump suction port 11, and then weld eight guide plates 3 distributed in a circular array on the mounting base plate 2, and then weld the top anti-rotation plate 4 on the top of the eight guide plates 3. When the water pump starts to run, the water pump suction port 11 generates negative pressure, which will attract the liquid in the expansion water tank 1 to flow to the eight guide plates 3, and the eight guide plates 3 will separate the original water pump suction port 11 into eight independent Water inlet channel. At this time, the cross-sectional area of ​​each water inlet channel is close to the cross-sectional area of ​​the water pump suction port 11, and the pressure of each water inlet channel is about 1 / 8 of the pressure of the water pump inlet 11, so that the liquid can be evenly dispersed and the vortexes and bubbles generated in the liquid flow process can be reduced. Since the guide plate 3 is a V-shaped structure, it is easier to guide the liquid to flow along a predetermined path, making the liquid flow more uniform and stable, and further eliminating adverse factors such as turbulence and vortices in the liquid flow process, thereby reducing the resistance, noise and vibration of the water pump.

[0030] Specifically, the diameter of the through hole 21 is 1.5 times the diameter of the water pump suction port 11; when the water pump is running and negative pressure is generated at the water pump suction port 11, since the diameter of the through hole 21 is 1.5 times larger than the diameter of the water pump suction port, before the liquid enters the water pump, there will be a larger space in the through hole 21 to disperse and slow down, which can help reduce the local resistance of the liquid flow. In addition, before the liquid enters the smaller diameter, that is, the water pump suction port 11, its speed can be buffered and dispersed to a certain extent in the through hole 21, and the smaller flow resistance can enable more liquid to enter the water pump at a faster speed, thereby increasing the flow rate.

[0031] Furthermore, the height of the guide plate 3 is equal to the diameter of the through hole 21; by setting the height of the guide plate 3 equal to the diameter of the through hole 21, the liquid can be fully dispersed and guided when flowing through the guide plate 3, thereby reducing the flow velocity and making the liquid flow direction more uniform.

[0032] Furthermore, the inner side of the guide plate 3 is flush with the edge of the through hole 21, and the outer side of the guide plate 3 is flush with the edge of the top anti-rotation plate 4; when the liquid enters the through hole 21 from the water inlet channel formed by the guide plate 3, since the inner side of the guide plate 3 is flush with the edge of the through hole 21, the liquid can flow in smoothly and unimpeded, which can reduce the liquid disturbance and vortex caused by the uneven edge, and ensure the stability and continuity of the liquid. The outer side of the guide plate 3 is flush with the edge of the top anti-rotation plate 4, so that the entire anti-rotation device is more compact in structure, making it less likely to deform or loosen during long-term operation.

[0033] Among them, in order to facilitate processing and installation, the installation base plate 2 and the top anti-rotation plate 4 are both square planar sheet metal parts; square planar sheet metal parts are simple to process and can be quickly formed through processes such as cutting, bending and welding, thereby reducing manufacturing costs.

[0034] In addition, in order to facilitate the installation of the anti-rotation device, the size of the top anti-rotation plate 4 is smaller than the size of the installation base plate 2; the smaller size of the top anti-rotation plate 4 makes it easier to operate and position during installation, and can avoid interference with other components in the expansion water tank.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water pump suction port anti-rotation device, characterized in that: It comprises a mounting base plate (2) welded at a position corresponding to a water pump suction port (11) in an expansion water tank (1), a through hole (21) provided on the mounting base plate (2) and connected to the water pump suction port (11), eight guide plates (3) distributed in an annular array on a side of the mounting base plate (2) away from the water pump suction port (11) and welded to the mounting base plate (2), and a top anti-rotation plate (4) welded to a side of the eight guide plates (3) away from the mounting base plate (2); The guide plate (3) is a V-shaped sheet metal bent part.

2. A water pump suction port anti-rotation device according to claim 1, characterized in that: The mounting base plate (2) and the top anti-rotation plate (4) are both square planar sheet metal parts.

3. A water pump suction port anti-rotation device according to claim 2, characterized in that: The size of the top anti-rotation plate (4) is smaller than the size of the mounting base plate (2).

4. The water pump suction port anti-rotation device according to claim 1, characterized in that: The diameter of the through hole (21) is 1.5 times the diameter of the water pump suction port (11).

5. The water pump suction port anti-rotation device according to claim 4, characterized in that: The height of the guide plate (3) is equal to the diameter of the through hole (21).

6. The water pump suction port anti-rotation device according to claim 1, characterized in that: The inner side of the guide plate (3) is flush with the edge of the through hole (21), and the outer side of the guide plate (3) is flush with the edge of the top anti-rotation plate (4).

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