A liquid flow reversing device and condenser tube cleaning system

Abstract

The application discloses a liquid flow reversing device and a condenser pipe cleaning system. The liquid flow reversing device comprises a main body with a cavity, a cover plate and a reversing component. One end of the reversing component is connected with a rotating shaft. The main body is provided with a first connecting pipe and two vertically arranged second connecting pipes. Two ends of the reversing component are connected with a conversion body. One end of the conversion body is provided with a first through hole, and the other end is provided with two second through holes. The first connecting pipe and the second connecting pipe are respectively provided with connecting pipes outside the reversing component. The connecting pipes and the cavity and the cover body form a water flow path. The first through hole and one of the second through holes, the second connecting pipe and one of the connecting pipes in the first connecting pipe form another water flow path. Through the rotation of the reversing component in the cavity, the first through hole is communicated with the connecting pipe and is switched to be communicated with another connecting pipe. One of the connecting pipes and one of the through holes are communicated and switched to be communicated with another one of the second through holes. The water flow direction is changed to realize the reversing. The reversing path is smooth, and the influence on the water pressure is small.

Description

Technical Field

[0001] This invention relates to the field of commutator technology, and in particular to a fluid flow reversing device and a condenser tube cleaning system. Background Technology

[0002] Centralized cooling systems enable large-area cooling with high efficiency and energy conservation. During cooling, heat exchange occurs through a centralized condenser. Water flows through the condenser tubes to reduce heat. Over time, scale forms inside the condenser tubes, directly impacting condensation performance. Therefore, the condenser tubes require frequent cleaning to prevent scale buildup. To improve cleaning efficiency and convenience, online cleaning is typically used, eliminating the need to disassemble the tubes. Online cleaning involves changing the water flow direction within the condenser tubes. The water flow powers a cleaning mechanism that moves along the tubes, creating a brushing effect that prevents debris from depositing and forming scale. While the water flow direction is fixed during operation, using water flow for cleaning requires a flow diverter to change the water flow direction within the tubes, without altering the overall flow direction at the condenser inlet and outlet. The existing commutator has a tortuous water flow path during the commutation process, which results in greater resistance and causes significant fluctuations in the pressure inside the condenser tube. In addition, the sealing area during the commutator's switching process increases the difficulty of sealing. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a liquid flow reversing device and a condenser tube cleaning system, wherein the liquid flow reversing device reduces the reversing resistance and reduces the impact on the pressure inside the condenser tube.

[0004] To address the aforementioned problems, the present invention provides a fluid flow reversing device, which... The device includes a main body with a chamber and a cover plate fixed to the main body to form a sealed chamber, as well as a reversing component disposed in the chamber. The reversing component is connected to a rotating shaft with one end passing through the cover plate. The main body has two horizontally arranged first connecting pipes and two vertically arranged second connecting pipes communicating with the chamber. The first connecting pipes and the second connecting pipes are respectively located on opposite sides of the main body in the circumferential direction. The reversing component includes a conversion body with both ends forming a sealed contact with the surface of the chamber and a cavity disposed in the conversion body. One end of the conversion body has a first through hole communicating with the cavity and the two first connecting pipes. The other end of the conversion body has two second through holes communicating with the cavity and one of the two second connecting pipes. One of the two second through holes communicates with one of the two second connecting pipes to form a water flow path, and the other first connecting pipe communicates with the chamber and the other second connecting pipe to form another water flow path. During conversion, the reversing component is rotated, and the first through hole rotates from communicating with one of the two first connecting pipes to communicating with the other first connecting pipe. The communication between one of the two second connecting pipes and one of the two second through holes is changed to communicating with the other second through hole. When changing the direction of water flow, the rotating shaft drives the reversing component to rotate, causing the reversing component to rotate at a certain angle, thereby changing the direction of water flow in the two water paths and realizing the reversal. Because the reversing path is smooth, it has little impact on water pressure, and the rotation angle during reversal is small, which increases the reversing speed.

[0005] In a preferred embodiment, the two first through holes and the two second through holes are on the same circumference, one of the two second connecting pipes is on the same circumference as the two first connecting pipes, and the circumference of the first through holes and the two second through holes coincides with the circumference of the two second connecting pipes and the first connecting pipe.

[0006] In a preferred embodiment, the two ends of the conversion body that contact and mate with the chamber are both arc surfaces.

[0007] In a preferred embodiment, the first through hole is orthographically projected along the length direction of the conversion body and located at the center of the line connecting the two second through holes.

[0008] In a preferred embodiment, the first through hole is orthographically projected along the length direction of the conversion body and partially overlaps with the two second through holes.

[0009] In a preferred embodiment, the distance between the two second through holes is not greater than the diameter of the first through hole.

[0010] In a preferred embodiment, a sealing ring is provided between the arcuate surface and the cavity.

[0011] In a preferred embodiment, the diameter of the first through hole and the two second through holes are the same, and the diameter of the two first wiring pipes and the two second wiring pipes is the same.

[0012] In a preferred embodiment, the fluid flow reversing device further includes a rotating shaft connected to the reversing component, one end of which extends out of a cover plate fixed to the main body to form a sealed chamber.

[0013] In a preferred embodiment, the fluid reversing device further includes a driving component connected to the rotating shaft to drive the reversing component to rotate, the driving component including a geared motor.

[0014] In a preferred embodiment, the conversion body is provided with cavities that are respectively connected to the first through hole and the second through hole.

[0015] In a preferred embodiment, the chamber is provided with a limiting component to restrict the rotation angle of the reversing component.

[0016] In a preferred embodiment, the connection between the two first connectors is perpendicular to the connection between the two second connectors.

[0017] In a preferred embodiment, one end of the rotating shaft extends out of a cover plate that is fixed to the main body to form a sealed chamber.

[0018] In a preferred embodiment, the width of the end of the conversion body with the second through hole in the rotation direction is greater than that of the end with the first through hole, but less than or equal to twice the width.

[0019] This invention also provides a condenser tube cleaning system to reduce cleaning resistance. The condenser tube cleaning system includes a liquid flow reversing device, which comprises a main body with a chamber and a cover plate fixed to the main body to form a sealed chamber, and a reversing component disposed in the chamber. The reversing component is connected to a rotating shaft with one end passing through the cover plate. The main body has two horizontally arranged first connecting pipes and two vertically arranged second connecting pipes communicating with the chamber. The first and second connecting pipes are respectively located on opposite sides of the main body circumferentially. The reversing component includes a conversion body with both ends forming a sealed contact with the surface of the chamber and a cavity disposed in the conversion body. One end of the conversion body has a connection to the cavity and the two first connecting pipes. The first through-hole of the connector and the other end of the conversion body are provided with two second through-holes that connect the cavity and one of the two second connectors. The other second connector is connected to the cavity. One of the two second through-holes is connected to one of the two second connecting pipes to form a water flow path. The other first connector, the cavity, and the other second connecting pipe form another water flow path. During conversion, the reversing component is rotated, and the first through-hole rotates from being connected to one of the two first connectors to being connected to the other first connector. The connection between one of the two second connectors and one of the two second through-holes is changed to being connected to the other second through-hole. When changing the water flow direction, the reversing component is rotated by controlling the rotating shaft to change the water flow direction of the two water flow paths by a certain angle, thus realizing the reversal. Because the reversing path is smooth, the impact on water pressure is small, and the rotation angle during reversal is small, which improves the reversing speed.

[0020] In a preferred embodiment, the two first through holes and the two second through holes are on the same circumference, one of the two second connecting pipes is on the same circumference as the two first connecting pipes, and the circumference of the first through holes and the two second through holes coincides with the circumference of the two second connecting pipes and the first connecting pipe.

[0021] In a preferred embodiment, the two ends of the conversion body that contact and mate with the chamber are both arc surfaces.

[0022] In a preferred embodiment, the first through hole is orthographically projected along the length direction of the conversion body and located at the center of the line connecting the two second through holes.

[0023] In a preferred embodiment, the first through hole is orthographically projected along the length direction of the conversion body and partially overlaps with the two second through holes.

[0024] In a preferred embodiment, the distance between the two second through holes is not greater than the diameter of the first through hole.

[0025] In a preferred embodiment, a sealing ring is provided between the arcuate surface and the cavity.

[0026] In a preferred embodiment, the diameter of the first through hole and the two second through holes are the same, and the diameter of the two first wiring pipes and the two second wiring pipes is the same.

[0027] In a preferred embodiment, the fluid flow reversing device further includes a rotating shaft connected to the reversing component, one end of which extends out of a cover plate fixed to the main body to form a sealed chamber.

[0028] In a preferred embodiment, the fluid reversing device further includes a driving component connected to the rotating shaft to drive the reversing component to rotate, the driving component including a geared motor.

[0029] In a preferred embodiment, the conversion body is provided with cavities that are respectively connected to the first through hole and the second through hole.

[0030] In a preferred embodiment, the chamber is provided with a limiting component to restrict the rotation angle of the reversing component.

[0031] In a preferred embodiment, the connection between the two first connectors is perpendicular to the connection between the two second connectors.

[0032] In a preferred embodiment, one end of the rotating shaft extends out of a cover plate that is fixed to the main body to form a sealed chamber.

[0033] In a preferred embodiment, the width of the end of the conversion body with the second through hole in the rotation direction is greater than that of the end with the first through hole, but less than or equal to twice the width.

[0034] This invention discloses a liquid flow reversing device and a condenser tube cleaning system. The liquid flow reversing device includes a main body with a chamber and a cover plate fixed to the main body to form a sealed chamber. A reversing component is disposed within the chamber and connected to a rotating shaft with one end passing through the cover plate. The main body has two horizontally arranged first connecting pipes and two vertically arranged second connecting pipes communicating with the chamber. The two first connecting pipes are located on opposite sides of the main body's circumference. The reversing component includes a conversion body with both ends forming a sealed contact with the chamber surface and a cavity disposed within the conversion body. One end of the conversion body has a first through hole connecting the cavity and the two first connecting pipes, and the other end of the conversion body has a... The cavity and one of the two second connecting pipes have two connected second through holes. The other second connecting pipe is connected to the cavity. One of the two second through holes is connected to one of the two second connecting pipes to form a water flow path. The other first connecting pipe, the cavity, and the other second connecting pipe form another water flow path. During switching, the reversing component is rotated, and the first through hole rotates from being connected to the two horizontally arranged first connecting pipes to being connected to the other first connecting pipe. The first through hole is then switched from being connected to one horizontally arranged connecting pipe to being connected to the other connecting pipe. The connection between one of the two vertically arranged connecting pipes and one of the two horizontally arranged second through holes is switched to being connected to the other horizontally arranged second through hole. When switching the water flow direction, the reversing component is rotated by controlling the rotating shaft to rotate, so that the reversing component rotates by a certain angle, changing the water flow direction of the two water flow paths, thus realizing the reversal. Because the reversing path is smooth, the impact on water pressure is small, reducing the turning resistance. Moreover, the small turning angle during reversal increases the reversing speed. In addition, since the reversing component and the main body only need to be connected at two end faces, the sealing area can be reduced, and the sealing difficulty can be reduced. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 An exploded view of an embodiment of the fluid flow reversing device of the present invention.

[0037] Figure 2 An exploded view of another embodiment of the fluid flow reversing device of the present invention.

[0038] Figure 3 A cross-sectional view of the reversing component of this invention along the direction perpendicular to the rotation axis.

[0039] Figure 4 A schematic diagram of the orthographic projection structure of the commutation component of the present invention along the F direction.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0042] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0043] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0045] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0046] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0047] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0048] like Figures 1-4 As shown, the present invention provides an embodiment of a fluid flow reversing device.

[0049] The fluid flow reversing device includes a main body 1 with a chamber 11 and a reversing component 3 disposed in the chamber 1. The main body 1 has two sets of wiring fittings that communicate with the chamber 11 respectively. The first set of wiring fittings includes two first wiring pipes 12, which are horizontally arranged. The second set of wiring fittings includes two second wiring pipes 13, which are connected perpendicularly to the horizontal direction. The reversing component 3 includes a conversion body 30 with both ends forming a sealed contact with the surface of the chamber 11. The conversion body 30 has a cavity 33. One end of the cavity 33 communicates with the conversion body 30 through a first through hole 31, and the other end of the cavity 33 communicates with one of two second through holes 32. The other second wiring pipe 13 communicates with the chamber 11. The first through hole 31 is connected to two second through holes 32. The first through hole 31 and the two second through holes 32 are located on the same circumference. The two first connecting pipes 12 and the two second connecting pipes 13 respectively form a first water flow path with the outside of the reversing component 3, the cavity 11 and the cover 2. The first through hole 31 and one second through hole 32, the two second connecting pipes 13 and one connecting pipe of the two first connecting pipes 12 respectively form a second water flow path. During the conversion, the reversing component 3 is rotated in the cavity 11 by the rotating shaft 4, so that the connection between the first through hole 31 and one of the two first connecting pipes 12 is changed to the connection with the other first connecting pipe 12, and the connection between one of the two second connecting pipes 13 and one of the two second through holes 32 is changed to the connection with the other of the two second through holes 32.

[0050] Specifically, the diameter of the first through hole 31 and the two second through holes 32 are the same, and the diameter is the same as that of the two first connecting pipes 12 and the two second connecting pipes 13. The fluid flow reversing device also includes a rotating shaft 4 connected to the reversing component 3. One end of the rotating shaft 4 extends out of the cover plate 2, which is fixed to the main body 1 to form a sealed chamber 11. The reversing component 3 is fixed by the rotating shaft 4, which is respectively engaged with the cover plate 2 and the bottom of the main body 1 at both ends. One empty end of the rotating shaft 4 passes through the cover plate 2. The main body 1 is provided with two horizontally arranged first connecting pipes 12 and two vertically arranged second connecting pipes 13 communicating with the chamber 11. The first connecting pipes 12 and the second connecting pipes 13 are respectively located on opposite sides of the main body 1. The reversing component 3 includes a conversion body 30, which forms a sealed contact with the surface of the chamber 11 at both ends, and a cavity 11 provided in the conversion body 30. One end of the conversion body 30 is provided with a first through hole 31 communicating with the two first connecting pipes 12. The other end of the conversion body 30 is provided with two second through holes 31 that connect the cavity 33 and one of the two second connecting pipes 13. Hole 13, another second connecting pipe 13 is connected to chamber 11, two second through holes 32 are connected to one of the two second connecting pipes 13, the first through hole 31 is connected to one of the two first connecting pipes 12, one of the two second through holes 32 is connected to one of the two second connecting pipes 13 to form a water flow path, the other first connecting pipe 12 is connected to chamber 11 and the other second connecting pipe 13 to form another water flow path. When switching, rotate the reversing component 3, the first through hole 31 is rotated from being connected to one of the two first connecting pipes 12 to being connected to the other first connecting pipe 12, and the connection between one of the two second connecting pipes 13 and one of the two second through holes 32 is switched to being connected to the other second through hole 32.

[0051] The conversion body 30 has arc-shaped surfaces at both ends, all located on the same circle. The two first through holes 31 and the two second through holes 32 are on the same circumference. One of the two second connecting pipes 13 and the two first connecting pipes 12 are on the same circumference, and the circumferences of the first through holes 31 and the two second through holes 32 coincide with the circumferences of the two second connecting pipes 13 and the first connecting pipes 12. These arc-shaped surfaces abut against the surface of the chamber 11 to form a sealed connection, ensuring that there is no leakage affecting the reversing water flow after conversion.

[0052] As needed, the two second through holes 32 are in the same horizontal plane or in a straight line. The first through hole 31 and the second through hole 32 are in the same straight line, allowing water to flow smoothly through the cavity and reducing resistance. To improve the sealing effect, a sealing ring (not shown in the attached figure) is provided between the arc surface and the cavity 11. To avoid affecting the pressure in the pressure pipe due to changes in water flow direction, the diameter of the first through hole 31 and the two second through holes 32 are the same, and also the same as the diameter of each first connecting pipe 12 and second connecting pipe 13. The driving component includes a geared motor, which may include a motor and a gearbox or reduction gear set connected to the motor shaft.

[0053] During installation, one end of the reversing component with the first through hole is positioned near two horizontally arranged conduits, and the second through hole is positioned near two vertically arranged conduits. When a change in water flow direction is needed, the driving component controls the rotating shaft to rotate the reversing component. This rotation causes the reversing component to rotate at a certain angle, moving the first through hole from one horizontally arranged conduit to another. Simultaneously, one of the two second through holes, previously connected to one of the two vertically arranged conduits, moves to the other. This changes the water flow direction in each conduit, achieving reversal. Since the reversing component only needs to be connected to the main body at two end faces, the sealing area is reduced, lowering the sealing difficulty. Furthermore, the resulting reversing path is smooth, minimizing the impact on water pressure.

[0054] When changing the direction of water flow, the rotating shaft drives the reversing component to rotate, changing the direction of the water flow in the two paths by a certain angle, thus achieving the reversal. Because the reversing path is smooth, the impact on water pressure is minimal. Furthermore, since the reversing component only needs to be connected to the main body at two end faces, the sealing area is reduced, lowering the sealing difficulty. In addition, the water flow resistance is low during the reversal.

[0055] In this embodiment, the main body can be integrally molded, such as by casting. The chamber 11 is configured as a cylindrical or columnar structure.

[0056] To improve turning speed and efficiency, the first through hole 31, projected along the length of the conversion body 3 (direction F), is located at the center of the line connecting the two second through holes 32, and the projection of the first through hole 31 along the length of the conversion body 3 partially coincides with the two second through holes 13. The distance L3 between the two second through holes 32 is not greater than the diameter 12 of the first through hole; when changing direction, only the arc length needs to be rotated relative to the distance between the second through holes 32. The width L1 of the end of the conversion body 3 with the second through hole 32 in the rotation direction is greater than the width L2 of the end with the first through hole 31, and less than or equal to twice the width. This ensures that the liquid flow channel is as smooth as possible when changing flow direction, reducing the pressure impact on the water pipe during the change, and improving the changing speed and efficiency.

[0057] To prevent excessive rotation during direction switching, which could lead to reversal failure, a limiting component (not shown in the attached figure) is provided between the chamber 11 and the reversing component 3 to restrict the rotation angle of the reversing component 3.

[0058] like Figures 1-4 As shown, the present invention provides an embodiment of a condenser tube cleaning system.

[0059] This condenser tube cleaning system is used for online cleaning of condenser tubes. It includes a liquid flow reversing device, which comprises a main body 1 with a chamber 11 and a reversing component 3 located within the chamber 1. The main body 1 has two sets of wiring fittings respectively communicating with the chamber 11. The first set of wiring fittings includes two first wiring pipes 12, which are horizontally arranged. The second set of wiring fittings includes two second wiring pipes 13, whose connection is perpendicular to the horizontal direction. The reversing component 3 includes a conversion body 30 whose two ends respectively form a sealed contact with the surface of the chamber 11. The conversion body 30 has a cavity 33. One end of the cavity 33 communicates with the conversion body 30 via a first through hole 31. The other end of the cavity 33 communicates with the two second wiring pipes 13 via a connection between the cavity 33 and the two second wiring pipes 12. The first through hole 31 is connected to the two second through holes 32 in the pipe 13. The first through hole 31 and the two second through holes 32 are located on the same circumference. The two first connecting pipes 12 and the two second connecting pipes 13 respectively form a first water flow path with the outside of the reversing component 3, the cavity 11 and the cover 2. The first through hole 31 and a second through hole 32, the two second connecting pipes 13 and a connecting pipe in the two first connecting pipes 12 respectively form a second water flow path. During the conversion, the reversing component 3 is rotated in the cavity 11 by the rotating shaft 4, so that the connection between the first through hole 31 and one of the two first connecting pipes 12 is changed to the connection with the other first connecting pipe 12, and the connection between one of the two second connecting pipes 13 and one of the two second through holes 32 is changed to the connection with the other of the two second through holes 32.

[0060] Specifically, the diameter of the first through hole 31 and the two second through holes 32 are the same, and the diameter of the two first connecting pipes 12 and the two second connecting pipes 13 are also the same. The fluid flow reversing device also includes a rotating shaft 4 connected to the reversing component 3. One end of the rotating shaft 4 extends out of the cover plate 2, which is fixed to the main body 1 to form a sealed chamber 11. The reversing component 3 is fixed by the rotating shaft 4, which is respectively engaged with the cover plate 2 and the bottom of the main body 1 at both ends. One empty end of the rotating shaft 4 passes through the cover plate 2. The main body 1 is provided with two horizontally arranged first connecting pipes 12 and two vertically arranged second connecting pipes 13 communicating with the chamber 11. The first connecting pipes 12 and the second connecting pipes 13 are respectively located on opposite sides of the main body 1. The reversing component 3 includes a conversion body 30, which forms a sealed contact with the surface of the chamber 11 at both ends, and a cavity 11 disposed in the conversion body 30. One end of the conversion body 30 is provided with a first through hole 31 communicating with the two first connecting pipes 12, and the other end of the conversion body 30 is provided with two connecting pipes 12 communicating with the first through hole 31. The second through hole 31, the two second through holes 32 are connected to one of the two second connecting pipes 13, the first through hole 31 is connected to one of the two first connecting pipes 12, one of the two second through holes 32 is connected to one of the two second connecting pipes 13 to form a water flow path, and the other first connecting pipe 12 is connected to the chamber 11 and the other second connecting pipe 13 to form another water flow path. When switching, the reversing component 3 is rotated, and the first through hole 31 is rotated from being connected to one of the two first connecting pipes 12 to being connected to the other first connecting pipe 12. The connection between one of the two second connecting pipes 13 and one of the two second through holes 32 is switched to being connected to the other second through hole 32.

[0061] The conversion body 30 has arc-shaped surfaces at both ends, all located on the same circle. The two first through holes 31 and the two second through holes 32 are on the same circumference. One of the two second connecting pipes 13 and the two first connecting pipes 12 are on the same circumference, and the circumferences of the first through holes 31 and the two second through holes 32 coincide with the circumferences of the two second connecting pipes 13 and the first connecting pipes 12. These arc-shaped surfaces abut against the surface of the chamber 11 to form a sealed connection, ensuring that there is no leakage affecting the reversing water flow after conversion.

[0062] As needed, the two second through holes 32 are in the same horizontal plane or in a straight line. The first through hole 31 and the second through hole 32 are in the same straight line, allowing water to flow smoothly through the cavity and reducing resistance. To improve the sealing effect, a sealing ring (not shown in the attached figure) is provided between the arc surface and the cavity 11. To avoid affecting the pressure in the pressure pipe due to changes in water flow direction, the diameter of the first through hole 31 and the two second through holes 32 are the same, and also the same as the diameter of each first connecting pipe 12 and second connecting pipe 13. The driving component includes a geared motor, which may include a motor and a gearbox or reduction gear set connected to the motor shaft.

[0063] During installation, one end of the reversing component with the first through hole is positioned near two horizontally arranged conduits, and the second through hole is positioned near two vertically arranged conduits. When a change in water flow direction is needed, the driving component controls the rotating shaft to rotate the reversing component. This rotation causes the reversing component to rotate at a certain angle, moving the first through hole from one horizontally arranged conduit to another. Simultaneously, one of the two second through holes, previously connected to one of the two vertically arranged conduits, moves to the other. This changes the water flow direction in each conduit, achieving reversal. Since the reversing component only needs to be connected to the main body at two end faces, the sealing area is reduced, lowering the sealing difficulty. Furthermore, the resulting reversing path is smooth, minimizing the impact on water pressure.

[0064] When changing the direction of water flow, the rotating shaft drives the reversing component to rotate, changing the direction of the water flow in the two paths by a certain angle, thus achieving the reversal. Because the reversing path is smooth, the impact on water pressure is minimal. Furthermore, since the reversing component only needs to be connected to the main body at two end faces, the sealing area is reduced, lowering the sealing difficulty. In addition, the water flow resistance is low during the reversal.

[0065] In this embodiment, the main body can be integrally molded, such as by casting. The chamber 11 is configured as a cylindrical or columnar structure.

[0066] To improve turning speed and efficiency, the first through hole 31, projected along the length of the conversion body 3 (direction F), is located at the center of the line connecting the two second through holes 32, and the projection of the first through hole 31 along the length of the conversion body 3 partially coincides with the two second through holes 13. The distance L3 between the two second through holes 32 is not greater than the diameter 12 of the first through hole; when changing direction, only the arc length needs to be rotated relative to the distance between the second through holes 32. The width L1 of the end of the conversion body 3 with the second through hole 32 in the rotation direction is greater than the width L2 of the end with the first through hole 31, and less than or equal to twice the width. This ensures that the liquid flow channel is as smooth as possible when changing flow direction, reducing the pressure impact on the water pipe during the change, and improving the changing speed and efficiency.

[0067] To prevent excessive rotation during direction switching, which could lead to reversal failure, a limiting component (not shown in the attached figure) is provided between the chamber 11 and the reversing component 3 to restrict the rotation angle of the reversing component 3.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fluid flow reversing device, comprising a main body having a chamber and a cover plate fixed to the main body to form a sealed chamber, and a reversing component disposed in the chamber, the reversing component being connected to a rotating shaft having one end passing through the cover plate, the main body having two horizontally arranged first connecting pipes and two vertically arranged second connecting pipes communicating with the chamber, the first connecting pipes and the second connecting pipes being respectively located on opposite sides of the main body in the circumferential direction, characterized in that, The reversing component includes a reversing body with both ends forming a sealed contact with the surface of the chamber and a cavity disposed in the reversing body. One end of the reversing body is provided with a first through hole connecting the cavity and the two first connecting pipes, and the other end is provided with two second through holes connecting the cavity and one of the two second connecting pipes. One of the two second through holes is connected to one of the two second connecting pipes to form a water flow path, and the other first connecting pipe is connected to the chamber and the other second connecting pipe to form another water flow path. During reversal, the reversing component is rotated, and the first through hole rotates from being connected to one of the two first connecting pipes to being connected to the other first connecting pipe. The connection between one of the two second connecting pipes and one of the two second through holes is changed to being connected to the other second through hole.

2. The fluid flow reversing device according to claim 1, characterized in that, The two first through holes and the two second through holes are on the same circumference, and one of the two second connecting pipes is on the same circumference as the two first connecting pipes, and the circumference of the first through holes and the two second through holes coincides with the circumference of the two second connecting pipes and the first connecting pipe.

3. The fluid flow reversing device according to claim 1, characterized in that, The two ends of the conversion body that contact and cooperate with the chamber are both arc surfaces.

4. The fluid flow reversing device according to claim 1, characterized in that, The first through hole is orthographically projected along the length direction of the conversion body and located at the center of the line connecting the two second through holes.

5. The fluid flow reversing device according to claim 4, characterized in that, The first through hole is projected along the length of the conversion body and partially overlaps with the two second through holes.

6. The fluid flow reversing device according to claim 1, characterized in that, The distance between the two second through holes is not greater than the diameter of the first through hole.

7. The fluid flow reversing device according to claim 1, characterized in that, The conversion body is provided with cavities that are respectively connected to the first through hole and the second through hole.

8. The fluid flow reversing device according to claim 1, characterized in that, The chamber is equipped with a limiting component that restricts the rotation angle of the reversing component.

9. The fluid flow reversing device according to claim 1, characterized in that, The width of the end of the conversion body with the second through hole in the rotation direction is greater than that of the end with the first through hole, but less than or equal to twice the width.

10. A condenser tube cleaning system, comprising a liquid flow reversing device, characterized in that, The fluid flow reversing device has the fluid flow reversing device as described in any one of claims 1-9.

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