Killing and preventing device for vertical seawater lifting pump and vertical seawater lifting pump

Abstract

The utility model discloses a vertical seawater lifting pump's disinfecting and killing protection device and vertical seawater lifting pump, vertical seawater lifting pump has the suction port and pump export, and the suction port is provided with the filter screen, and the disinfecting and killing protection device of seawater lifting pump includes: spraying mechanism, dosing inlet pipeline and starting flush pipe, and spraying mechanism is used to install at the filter screen, and spraying mechanism includes: center liquid supply pipe, and the outer ring spout pipe of the outer contour of filter screen is adapted, and a plurality of communication pipe that communicates center liquid supply pipe with outer ring spout pipe, and is provided with the discharge hole on spraying mechanism, dosing inlet pipeline is linked together with center liquid supply pipe pump export, starting flush pipe, and one end of starting flush pipe is used to communicate pump export or the export pipeline that is linked together with pump export, and the other end communicates dosing inlet pipeline or the spraying mechanism that is linked together with dosing inlet pipeline. The application can satisfy the use demand of uniform dosing, anti -clogging, full -cycle protection, safe and economic of large -scale vertical seawater lifting pump.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for vertical seawater lift pumps, and in particular to a disinfection and protection device for a vertical seawater lift pump and the vertical seawater lift pump itself. Background Technology

[0002] Vertical seawater lift pumps, especially large ones, are prone to the attachment and growth of marine organisms such as shellfish and algae in the suction inlet and pump flow channel during long-term operation. This can cause blockage of the flow channel, reduction of flow area, decrease in operating efficiency, and increase in energy consumption. In severe cases, it can lead to equipment failure and affect the safe and stable operation of the system.

[0003] Existing technologies cannot meet the requirements of large vertical seawater booster pumps for uniform dosing, anti-clogging, full-cycle protection, and safe and economical use.

[0004] Therefore, it is necessary to propose a disinfection and protection device for a vertical seawater lift pump and a vertical seawater lift pump to solve at least one of the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a disinfection and protection device for a vertical seawater lift pump and a vertical seawater lift pump, which can meet the needs of large vertical seawater lift pumps for uniform dosing, anti-clogging, full-cycle protection, and safe and economical use.

[0007] The specific technical solution of this utility model embodiment is as follows:

[0008] A disinfection and protection device for a vertical seawater lift pump, the vertical seawater lift pump having an inlet and an outlet, a filter screen being installed at the inlet, and the disinfection and protection device comprising: a spraying mechanism, a chemical dosing inlet pipe, and a start-up flushing pipe, the spraying mechanism being installed at the filter screen, the spraying mechanism comprising: a central liquid supply pipe, an outer ring spray pipe adapted to the outer contour of the filter screen, and multiple connecting pipes connecting the central liquid supply pipe and the outer ring spray pipe, the spraying mechanism having a discharge hole; the chemical dosing inlet pipe being connected to the central liquid supply pipe; one end of the start-up flushing pipe being connected to the pump outlet of the vertical seawater lift pump or an outlet pipe connected to the pump outlet, and the other end being connected to the chemical dosing inlet pipe or the spraying mechanism connected to the chemical dosing inlet pipe.

[0009] Furthermore, a diversion connector is provided at the end of the central liquid supply pipe, and the diversion connector is provided with multiple diversion interfaces, the number of which is the same as the number of the connecting pipes.

[0010] Furthermore, the connecting pipe has a first connecting end for connecting to the diversion interface and a second connecting end for connecting to the outer ring nozzle, and a plurality of the connecting pipes are arranged radially and evenly at intervals around the diversion connector.

[0011] Furthermore, the opening of the discharge port faces the suction port, and the diameter of the discharge port is 6 mm or more.

[0012] Furthermore, the discharge port includes: a plurality of first discharge ports disposed on the connecting pipe, and a plurality of second discharge ports disposed on the outer ring nozzle, wherein the average diameter of the first discharge ports is greater than the average diameter of the second discharge ports.

[0013] Furthermore, the plurality of first discharge holes are arranged at intervals along the extension direction of the connecting pipe, and the diameter of the plurality of first discharge holes decreases from the center to the periphery.

[0014] Furthermore, the opening directions of two adjacent first discharge holes are staggered, and the fluid flowing out of the first discharge holes can flow to the filter screen.

[0015] Furthermore, the plurality of second discharge holes are evenly spaced along the circumferential direction of the outer ring nozzle, and the distance between two adjacent second discharge holes is less than the distance between two adjacent first discharge holes.

[0016] Furthermore, a first check valve is provided on the dosing inlet pipeline. The dosing inlet pipeline has a first inlet end and a first outlet end. The first outlet end is connected to the spraying mechanism. The first check valve is used to control the unidirectional flow of fluid from the first inlet end to the first outlet end.

[0017] Furthermore, the other end of the start-up flushing pipe is connected to the dosing inlet pipe and is located downstream of the first check valve. A shut-off valve and a second check valve are sequentially arranged on the start-up flushing pipe along the fluid flow direction. The start-up flushing pipe has a second inlet end and a second outlet end. The second check valve is used to control the unidirectional flow of fluid from the second inlet end to the second outlet end.

[0018] A vertical seawater lift pump includes a pump body, the pump body having an inlet and an outlet, a filter screen being provided at the inlet, and the vertical seawater lift pump further includes a disinfection and protection device for any of the above-mentioned vertical seawater lift pumps.

[0019] The technical solution of this utility model has the following significant beneficial effects:

[0020] In this embodiment, the disinfection and protection device of the vertical seawater lift pump mainly includes: a spraying mechanism, a dosing inlet pipe, and a start-up flushing pipe. The spraying mechanism is installed at the filter screen of the suction inlet. The spraying mechanism is equipped with a central liquid supply pipe, an outer ring spray pipe, and a connecting pipe, with a discharge hole on the pipe. The dosing inlet pipe is connected to the central liquid supply pipe. One end of the start-up flushing pipe is connected to the pump outlet / outlet pipe, and the other end is connected to the dosing inlet pipe or the spraying mechanism. When in use, a high concentration of disinfectant is injected into the dosing inlet pipe, which can form a water path for dosing disinfection and automatic flushing. This achieves uniform spraying of the agent throughout the suction inlet area, solving the problem of uneven dosing of large-diameter pumps. The high pressure at the pump outlet forms a flushing circuit to prevent nozzle clogging. In addition, the overall structure is simple, compatible with existing filters, and can achieve full-cycle protection without major modifications to the pump body, meeting the requirements for safe and economical use.

[0021] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0022] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0023] Figure 1 This is a schematic diagram of the structure of a vertical seawater lift pump provided in the embodiments of this application;

[0024] Figure 2 This is a front view of a vertical seawater lift pump provided in the embodiments of this application;

[0025] Figure 3 This is a side view of a vertical seawater lift pump provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the disinfection and protection device for a vertical seawater lift pump provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the spraying mechanism in a disinfection and protection device for a vertical seawater lift pump provided in the embodiments of this application;

[0028] Figure 6 This is a front view of the spraying mechanism in a disinfection and protection device for a vertical seawater lift pump provided in the embodiments of this application;

[0029] Figure 7 This is a bottom view of the spraying mechanism in a disinfection and protection device for a vertical seawater lift pump provided in the embodiments of this application;

[0030] Figure 8 for Figure 1 A magnified view of a portion of point I in the middle.

[0031] The reference numerals in the above figures are as follows:

[0032] 1. Spraying mechanism;

[0033] 2. Central liquid supply pipe;

[0034] 3. Outer ring nozzle;

[0035] 4. Connecting pipe;

[0036] 5. Discharge port;

[0037] 51. First discharge port;

[0038] 52. Second discharge port;

[0039] 6. Diverter connector;

[0040] 7. Chemical dosing inlet pipeline;

[0041] 8. Start the machine and flush the hose;

[0042] 91. First check valve;

[0043] 92. Second check valve;

[0044] 93. Shut-off valve;

[0045] 110. Filter screen;

[0046] 101. Suction port;

[0047] 102. Pump outlet;

[0048] 100. Pump body. Detailed Implementation

[0049] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] Currently, marine life protection and control technologies suffer from the following main drawbacks: frequent switching between main and backup pumps not only increases commissioning and energy costs, but also fails to suppress marine life growth during downtime; coarse grilles or filters installed at the inlet can only block large debris, not small marine organisms entering the pump body; maintenance relies on high-pressure water flushing or mechanical scraping by divers, resulting in high operating costs and significant underwater risks; direct injection of chemical disinfectants through a single pipe is problematic due to the large diameter of the large vertical seawater lifting inlet, limiting the application range and causing uneven distribution, leading to either excessively high local concentrations and wasted agents or insufficient concentrations and disinfection failure; additionally, the small orifice and narrow flow channel of the dosing nozzle make it easily clogged by flocculent matter or impurities, preventing stable and reliable full-cycle protection.

[0052] This utility model provides a disinfection and protection device for a vertical seawater lift pump and a vertical seawater lift pump, which can meet the needs of large-scale vertical seawater lift pumps for uniform dosing, anti-clogging, full-cycle protection, and safe and economical use.

[0053] Please refer to the following for comprehensive information. Figures 1 to 8This application specification provides a disinfection and protection device for a vertical seawater lift pump. The vertical seawater lift pump has an inlet 101 and an outlet 102. A filter screen 110 is provided at the inlet 101. The disinfection and protection device for the vertical seawater lift pump may include: a spraying mechanism 1, a chemical dosing inlet pipe 7, and a start-up flushing pipe 8. The spraying mechanism 1 is installed at the filter screen 110. The spraying mechanism 1 includes: a central liquid supply pipe 2, an outer ring spray pipe 3 adapted to the outer contour of the filter screen 110, and a plurality of connecting pipes 4 connecting the central liquid supply pipe 2 and the outer ring spray pipe 3. 1 is provided with a discharge hole 5; the dosing inlet pipe 7 is connected to the central liquid supply pipe 2; one end of the start-up flushing pipe 8 is used to connect to the pump outlet 102 of the vertical seawater lift pump or an outlet pipe connected to the pump outlet 102, and the other end is connected to the dosing inlet pipe 7 or a spraying mechanism 1 connected to the dosing inlet pipe 7. Before the vertical seawater lift pump is started, the fluid flowing in from the dosing inlet pipe 7 can flow into the vertical seawater lift pump through the spraying mechanism 1. After the vertical seawater lift pump is started, the fluid flowing through the start-up flushing pipe 8 can flush the spraying mechanism 1.

[0054] like Figure 4 As shown in the embodiment of this application, the disinfection and protection device of the vertical seawater lift pump mainly includes: a spraying mechanism 1, a chemical dosing inlet pipe 7, and a start-up flushing pipe 8. Please refer to the following for details. Figure 1 , Figure 2 , Figure 3 and Figure 8 The spraying mechanism 1 is installed at the filter screen 110 of the suction port 101. The suction port 101 is located at the bottom end of the vertical seawater lift pump.

[0055] The spraying mechanism 1 is equipped with a central liquid supply pipe 2, an outer ring spray pipe 3, and a connecting pipe 4, with a discharge hole 5 on the pipe. The dosing inlet pipe 7 is connected to the central liquid supply pipe 2. One end of the start-up flushing pipe 8 is connected to the pump outlet 102 / outlet pipe, and the other end is connected to the dosing inlet pipe 7 or the spraying mechanism 1. When in use, a high concentration of disinfectant is injected into the dosing inlet pipe 7, which can form a water path for dosing disinfection and automatic flushing. This achieves uniform spraying of the agent throughout the suction port 101, solving the problem of uneven dosing by large-diameter pumps. The high pressure at the pump outlet 102 forms a flushing circuit to prevent nozzle clogging. In addition, the overall structure is simple and compatible with existing filters 110. It can achieve full-cycle protection without major modifications to the pump body, meeting the requirements for safe and economical use.

[0056] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] One end of the start-up flushing pipe 8 is used to connect to the pump outlet 102 of the vertical seawater lift pump or an outlet pipe connected to the pump outlet 102. In this embodiment, the example is mainly that one end of the start-up flushing pipe 8 is directly connected to the pump outlet 102. With this setting, the high-pressure medium of the pump outlet 102 can be directly used to provide stable and sufficient pressure for flushing, ensuring the flushing effect on the spraying mechanism 1. At the same time, no additional power device is required, making the structure simpler and more economical.

[0058] The other end of the start-up flushing pipe 8 can be connected to the dosing inlet pipe 7 or the spraying mechanism 1 connected to the dosing inlet pipe 7. In this embodiment, the example mainly illustrates that the other end of the start-up flushing pipe 8 is directly connected to the dosing inlet pipe 7. Please refer to the following: Figure 4 , Figure 5 , Figure 6 ,and Figure 7 Connecting the start-up flushing pipe 8 to the dosing inlet pipe 7 allows for the overall flushing of the spraying mechanism 1 using the existing flow channel. This eliminates the need for additional interfaces on the spraying mechanism 1, resulting in a more compact structure, easier installation and maintenance, and ensures that the flushing fluid flows smoothly into each discharge hole 5, achieving comprehensive anti-clogging.

[0059] The central liquid supply pipe 2 is provided with a diversion connector 6 at its end. The end of the central liquid supply pipe 2 is the outlet end of the central liquid supply pipe 2 along the fluid flow direction. The diversion connector 6 is provided with multiple diversion interfaces, and the number of diversion interfaces is the same as the number of connecting pipes 4.

[0060] In this embodiment, by setting a diversion connector 6 at the end of the central supply pipe 2, the agent can be evenly distributed to each connecting pipe 4 to avoid flow deviation; ensuring consistent spraying flow rate in all directions and making the disinfection concentration more uniform.

[0061] Furthermore, the connecting pipe 4 has a first connecting end for connecting to the diversion interface and a second connecting end for connecting to the outer ring nozzle 3, and a plurality of the connecting pipes 4 are arranged radially and evenly at intervals around the diversion connector 6.

[0062] In this embodiment, after the connecting pipe 4 is installed in place through the diversion interface, it can form an annular spoke spray coverage when in use, with no dead angles or blind spots; it can be better adapted to the large-diameter inlet 101 to ensure that the entire cross section is uniformly treated with medicine.

[0063] In one embodiment, the opening direction of the discharge hole 5 is towards the suction port 101, and the diameter of the discharge hole 5 is 6 mm or more.

[0064] In this embodiment, the opening of the discharge hole 5 faces the suction port 101, ensuring that the agent is directly sprayed onto the flow channel and filter screen 110, resulting in more direct and efficient disinfection. Furthermore, the aperture of the discharge hole 5 is ≥6mm, which significantly reduces the risk of clogging and prevents flocculent matter and impurities from blocking the discharge hole 5.

[0065] In one embodiment, the discharge hole 5 may include a plurality of first discharge holes 51 disposed on the connecting pipe 4 and a plurality of second discharge holes 52 disposed on the outer ring nozzle 3, wherein the average diameter of the first discharge holes 51 is greater than the average diameter of the second discharge holes 52.

[0066] In this embodiment, the diameter of the first discharge hole 51 of the connecting pipe 4 is larger than the diameter of the second discharge hole 52 of the outer ring nozzle 3, so that the pressure of the fluid is uniform when it is discharged from the first discharge hole 51 and the second discharge hole 52, ensuring that there are no dead corners at the edge of the outer ring nozzle 3 and that the overall concentration is more balanced.

[0067] Furthermore, a plurality of first discharge holes 51 are arranged at intervals along the extension direction of the connecting pipe 4, and the diameter of the plurality of first discharge holes 51 decreases from the center to the periphery.

[0068] When the diameter of the first discharge hole 51 decreases along the extension direction of the connecting pipe 4, it can compensate for the pressure loss along the pipeline, ensure uniform spraying of the entire connecting pipe 4, and avoid excessively high concentration at the near end and insufficient concentration at the far end.

[0069] In one embodiment, the opening directions of two adjacent first discharge holes 51 are staggered, and the fluid flowing out of the first discharge holes 51 can flow to the filter screen 110.

[0070] In this embodiment, the opening directions of the first discharge holes 51 on the connecting pipe 4 can be different. For example, the opening directions of two adjacent first discharge holes 51 can be staggered, and the liquid discharge directions of two adjacent first discharge holes 51 can form a predetermined angle. This can expand the spray coverage area and avoid spray overlap or blank areas; it can also provide all-round rinsing of the filter screen 110 and reduce biological adhesion.

[0071] Furthermore, the plurality of second discharge holes 52 are evenly spaced along the circumferential direction of the outer ring nozzle 3, and the distance between two adjacent second discharge holes 52 is smaller than the distance between two adjacent first discharge holes 51.

[0072] In this embodiment, the second discharge holes 52 on the outer ring nozzle 3 are evenly and densely distributed along the outer ring circumference, with a spacing smaller than that of the first discharge holes 51, so that the outer ring area can achieve high-density, low-flow uniform drug delivery; adapted to the annular flow channel, it can achieve uniform disinfection throughout the entire area.

[0073] In one embodiment, a first check valve 91 is provided on the dosing inlet pipe 7. The dosing inlet pipe 7 has a first inlet end and a first outlet end. The first outlet end is connected to the spraying mechanism 1. The first check valve 91 is used to control the unidirectional flow of fluid from the first inlet end to the first outlet end.

[0074] In this embodiment, a first check valve 91 is provided on the dosing inlet pipe 7 to ensure that the fluid flows only from the dosing end to the spraying mechanism 1, thereby preventing seawater or chemicals from flowing back into the dosing system and protecting external dosing equipment from corrosion and damage.

[0075] Furthermore, the other end of the start-up flushing pipe 8 is connected to the dosing inlet pipe 7 and is located downstream of the first check valve 91. A shut-off valve 93 and a second check valve 92 are sequentially arranged on the start-up flushing pipe 8 along the fluid flow direction. The start-up flushing pipe 8 has a second inlet end and a second outlet end. The second check valve 92 is used to control the unidirectional flow of fluid from the second inlet end to the second outlet end.

[0076] In this embodiment, the start-up flushing pipe 8 is connected downstream of the first check valve 91, and a shut-off valve 93 and a second check valve 92 are sequentially installed on the pipe to ensure that the flushing water flows unidirectionally towards the spraying mechanism 1. When the pump is running, the disinfection and protection device of the vertical seawater lift pump can achieve automatic flushing and completely prevent clogging; in addition, by setting two check valves, the dosing circuit and the flushing circuit can be completely isolated from each other and do not interfere with each other.

[0077] Please refer to the following: Figures 1 to 3 and Figure 8 In this application embodiment, there is also a vertical seawater lift pump, which includes a pump body 100, the pump body 100 having an inlet 101 and a pump outlet 102, a filter screen 110 being provided at the inlet 101, and the vertical seawater lift pump also includes a disinfection and protection device for any of the above-mentioned vertical seawater lift pumps.

[0078] In this embodiment, the vertical seawater lift pump can achieve the technical effect of the embodiment of the vertical seawater lift pump by setting the disinfection and protection device of the vertical seawater lift pump. For details, please refer to the specific description of the above embodiment.

[0079] Overall, this vertical seawater lift pump has built-in marine organism disinfection and anti-clogging capabilities; by setting up disinfection and protection devices for the vertical seawater lift pump, the operational stability of the vertical seawater lift pump has been optimized, its service life has been extended, and maintenance costs have been reduced.

[0080] The vertical seawater lift pump may also include a controller and a dosing valve. The dosing valve may be located in or upstream of the dosing inlet pipe 7 and is used to control the connection between the external dosing system and the dosing inlet pipe 7. The controller may be electrically connected (wired or wirelessly) to the dosing valve and the shut-off valve 93.

[0081] The usage process of the vertical seawater lift pump provided in this application embodiment is as follows:

[0082] When the vertical seawater lift pump is shut down, the controller opens the dosing valve, connecting the external dosing system to the dosing inlet pipe 7, thereby enabling biological disinfection and achieving a thorough and uniform dosing effect. When the vertical seawater lift pump is started, the controller closes the dosing valve and opens the shut-off valve 93, using the high-pressure medium at the pump outlet 102 to continuously flush the spraying mechanism 1, preventing blockage of the spraying mechanism 1.

[0083] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of the disclosure “a” or “an” to describe an element, component, part, or step is not intended to exclude other elements, components, parts, or steps.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from the others. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A disinfection and protection device for a vertical seawater lift pump, wherein the vertical seawater lift pump has an inlet and an outlet, and a filter screen is provided at the inlet, characterized in that, The disinfection and protection device of the seawater lift pump includes: a spraying mechanism, a chemical dosing inlet pipeline, and a start-up flushing pipeline. The spraying mechanism is used to install on the filter screen. The spraying mechanism includes: a central liquid supply pipe, an outer ring spray pipe adapted to the outer contour of the filter screen, and a plurality of connecting pipes connecting the central liquid supply pipe and the outer ring spray pipe. The spraying mechanism is provided with a discharge hole. The dosing inlet pipeline is connected to the central liquid supply pipeline; One end of the start-up flushing pipe is used to connect to the pump outlet of the seawater lift pump or an outlet pipe connected to the pump outlet, and the other end is connected to the dosing inlet pipe or a spraying mechanism connected to the dosing inlet pipe.

2. The disinfection and protection device for the vertical seawater lift pump as described in claim 1, characterized in that, The central supply pipe is provided with a diversion connector at its end, and the diversion connector is provided with multiple diversion ports, the number of which is the same as the number of the connecting pipes.

3. The disinfection and protection device for the vertical seawater lift pump as described in claim 2, characterized in that, The connecting pipe has a first connecting end for connecting to the diversion interface and a second connecting end for connecting to the outer ring nozzle, and a plurality of the connecting pipes are arranged radially and evenly at intervals around the diversion connector.

4. The disinfection and protection device for the vertical seawater lift pump as described in claim 1, characterized in that, The opening of the discharge port faces the suction port, and the diameter of the discharge port is 6 mm or more.

5. The disinfection and protection device for the vertical seawater lift pump as described in claim 1, characterized in that, The discharge port includes: a plurality of first discharge ports disposed on the connecting pipe, and a plurality of second discharge ports disposed on the outer ring nozzle, wherein the average diameter of the first discharge ports is greater than the average diameter of the second discharge ports.

6. The disinfection and protection device for the vertical seawater lift pump as described in claim 5, characterized in that, Multiple first discharge holes are arranged at intervals along the extension direction of the connecting pipe, and the diameter of the multiple first discharge holes decreases from the center to the periphery.

7. The disinfection and protection device for the vertical seawater lift pump as described in claim 5, characterized in that, The opening directions of two adjacent first discharge holes are staggered, and the fluid flowing out of the first discharge holes can flow to the filter screen.

8. The disinfection and protection device for the vertical seawater lift pump as described in claim 5, characterized in that, Multiple second discharge holes are evenly spaced along the circumference of the outer ring nozzle, and the distance between two adjacent second discharge holes is less than the distance between two adjacent first discharge holes.

9. The disinfection and protection device for the vertical seawater lift pump as described in claim 1, characterized in that, A first check valve is provided on the dosing inlet pipeline. The dosing inlet pipeline has a first inlet end and a first outlet end. The first outlet end is connected to the spraying mechanism. The first check valve is used to control the unidirectional flow of fluid from the first inlet end to the first outlet end.

10. The disinfection and protection device for the vertical seawater lift pump as described in claim 9, characterized in that, The other end of the start-up flushing pipe is connected to the dosing inlet pipe and is located downstream of the first check valve. The start-up flushing pipe is provided with a shut-off valve and a second check valve in sequence along the fluid flow direction. The start-up flushing pipe has a second inlet end and a second outlet end. The second check valve is used to control the unidirectional flow of fluid from the second inlet end to the second outlet end.

11. A vertical seawater lift pump, characterized in that, The vertical seawater lift pump includes a pump body, which has an inlet and an outlet. A filter screen is provided at the inlet. The vertical seawater lift pump also includes a disinfection and protection device for the vertical seawater lift pump as described in any one of claims 1-10.

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