Submerged electric pump with float

Abstract

This application discloses a float-type submersible pump, including a float consisting of a float outer shell and a float inner shell, with an annular sealed cavity formed between the two shells. A float fixing flange is provided at the top port of the float inner shell. The submersible pump is coaxially installed in the float inner shell, and its cable passes through the fixing flange upwards in a sealed manner. The float designed in this application can house the submersible pump and, after being submerged, keep the pump vertically floating, placing the pump unit at the top. This effectively prevents the pump unit from sinking into the sediment and being damaged. After the float and pump are submerged, they are easily balanced and not prone to tipping over. A filter screen can be installed at the bottom of the float to effectively prevent debris from clogging the inlet. The pump unit is located outside the float, making maintenance easier and eliminating the need for disassembly after lifting the entire unit.

Description

Technical Field

[0001] This application relates to the field of submersible pump technology, and more particularly to a float-type submersible pump. Background Technology

[0002] A float-type submersible pump is a submersible pump that integrates the pump body and motor into a float device. It achieves surface operation by utilizing the buoyancy of the float, combining the high efficiency and mobility of a submersible pump. It mainly consists of a float and a pump body. The float is connected to one side of the pump body and has a horizontal structure, allowing the entire pump body to be submerged in water while the float floats on the water surface. It can be used in temporary water supply applications such as agricultural irrigation, water conservancy projects, industry, and emergency water supply.

[0003] Currently, conventional float-type submersible pumps, after entering the water, are prone to problems such as excessive water entering the motor end of the pump body, the pump body outlet tilting upwards, and the pump body unit easily sliding off after entering the water, which affect the normal pumping operation of the pump body and are also prone to damage to the pump body. Summary of the Invention

[0004] To address the aforementioned problems, this application aims to provide a float-type submersible pump that can effectively prevent the pump unit from sinking into the mud and sand at the bottom of the water and being damaged. Furthermore, it is easy to achieve balance after entering the water and is not easy to tip over.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A float-type submersible electric pump includes: a float, the float being composed of a float outer shell and a float inner shell, and an annular sealed cavity being formed between the float outer shell and the float inner shell, and a float fixing flange being provided at the top port of the float inner shell;

[0006] A submersible pump is coaxially installed in the inner shell of the float and is fixed to the float fixing flange via a pump body fixing flange at the upper end of the submersible pump. The water inlet of the submersible pump is located inside the inner shell of the float and communicates with the outside through the bottom port of the inner shell of the float. The water outlet of the submersible pump is located outside the top port of the inner shell of the float, so that the overall draft of the float and the submersible pump is below the top port of the outer shell of the float. The cable of the submersible pump passes through the pump body fixing flange upwards in a sealed manner.

[0007] Preferably, a water filter screen is provided at the bottom port of the inner shell of the float.

[0008] Preferably, the bottom port of the inner shell of the float is lower than the bottom port of the outer shell of the float, and the bottom port of the inner shell of the float and the bottom port of the outer shell of the float are sealed by an arc-shaped plug plate.

[0009] Preferably, a plug plate is provided between the top port of the inner shell of the float and the top port of the outer shell of the float, and float lifting rings are symmetrically arranged on the plug plate along the axis; pump body lifting rings are symmetrically arranged on the pump body fixing flange along the axis.

[0010] Preferably, the top of the float shell is provided with a guardrail, which surrounds and protects the top of the submersible pump.

[0011] The beneficial effects of this application are:

[0012] 1) The float provided in this application can house the submersible pump and make it float vertically after being submerged, so that the drive unit of the submersible pump is located at the top, which can effectively prevent the drive unit of the submersible pump from sinking into the mud and sand at the bottom of the water and being damaged.

[0013] 2) After the float and submersible pump are submerged, they are easy to balance and not easy to tip over.

[0014] 3) A filter screen can be installed at the bottom of the float to effectively prevent debris from clogging the water inlet.

[0015] 4) The drive unit of the submersible pump is located on the upper part of the float, which makes the maintenance of the drive unit of the submersible pump more convenient and does not require the entire machine to be lifted and disassembled. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the float-type submersible electric pump of this application.

[0017] Figure 2 This is a schematic diagram of the launching of the float-type submersible electric pump of this application.

[0018] Figure 3 This is a front view of a conventional float-type submersible pump.

[0019] Figure 4 This is a side view of a conventional float-type submersible pump.

[0020] In the diagram: 1-Float; 11-Float outer shell; 12-Float inner shell; 13-Arc-shaped plug plate; 14-Plug plate; 1a-Annular sealing cavity; 2-Submersible pump; 2a-Inlet; 2b-Outlet; 31-Float fixing flange; 32-Pump body fixing flange; 41-Float lifting ring; 42-Pump body lifting ring; 5-Filter screen; 6-Guardrail; 7-Cable conduit. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] See attached document Figures 1-2The float-type submersible electric pump shown includes:

[0023] The float 1 is composed of a float outer shell 11 and a float inner shell 12, and an annular sealed cavity 1a is formed between the float outer shell 11 and the float inner shell 12. Figure 1 As shown, the buoyancy provided by the annular sealed cavity 1a enables the float and the submersible pump 2 assembled inside the float to float on the water, and the floating state is as follows: Figure 2 The image shows the vertical orientation.

[0024] A float fixing flange 31 is provided at the top port of the inner shell 12 of the float, so as to assemble the submersible electric pump 2 with the pump body fixing flange 32 of the submersible electric pump 2.

[0025] Submersible electric pump 2, such as Figure 1 As shown, the submersible pump 2 is coaxially installed inside the inner shell 12 of the float, so that the submersible pump 2 and the float are not tilted after being submerged. Specifically, the pump body fixing flange 32 at the upper end of the submersible pump 2 is assembled and fixed to the float fixing flange 31 by using screws.

[0026] After assembly, such as Figure 1 As shown, the inlet 2a of the submersible pump 2 is located inside the inner shell 12 of the float and communicates with the outside through the bottom port of the inner shell 12. The float protects the inlet 2a of the submersible pump 2 from impact damage during submersion. The outlet 2b of the submersible pump 2 is located outside the top port of the inner shell 12, ensuring that the draft of the float and the submersible pump 2 is below the top port of the outer shell 11 of the float. This arrangement ensures that most of the float and the submersible pump 2 are submerged in water, limiting overall sway during pumping and improving the stability of the submersible pump 2 during operation.

[0027] like Figure 1 As shown, the cable of the submersible pump 2 passes through the pump body fixing flange 32 and is sealed upwards for power connection.

[0028] To avoid clogging of the inlet 2a of the submersible pump 2 during pumping, such as Figure 1 As shown, a filter screen 5 is provided at the bottom port of the inner shell 12 of the float to block and filter debris during water pumping.

[0029] like Figure 1 As shown, the bottom port of the inner hull 12 is lower than the bottom port of the outer hull 11, and an arc-shaped plug plate 13 is provided between the bottom ports of the inner hull 12 and the outer hull 11 to seal their bottom ports. The arc-shaped plug plate 13 makes the entire bottom of the hull have a conical structure, which reduces resistance during launching, facilitating launching; and allows water pressure to pass through an axially symmetrical oblique action (…). Figure 2(As shown by the middle arrow) On this arc-shaped plug plate 13, the buoy can better limit the tipping of the float in the water compared to a flat-bottom structure.

[0030] like Figure 1 As shown, a plug plate 14 is provided between the top port of the inner shell 12 of the float and the top port of the outer shell 11 of the float, connecting and sealing the top ports of the two, and together with the arc-shaped plug plate 13 on the lower side, forming an annular sealed cavity 1a. Float lifting rings 41 are symmetrically arranged on the plug plate 14 along the axis, facilitating the overall hoisting and launching of the float and the submersible pump 2.

[0031] To facilitate the assembly of the submersible pump 2 with the float, such as Figure 1 As shown, pump body lifting rings 42 are symmetrically arranged on the pump body fixing flange 32 along the axis to lift the submersible electric pump 2 to the float for assembly or disassembly and maintenance.

[0032] To achieve protection for the top of the submersible pump 2 and the outlet 2b, such as Figure 1 As shown, a guardrail 6 is provided on the top of the float shell 11, and the guardrail 6 surrounds and protects the top of the submersible pump 2 to prevent damage to the top of the submersible pump 2 and the connection between the outlet 2b and the water supply pipe (not shown in the figure) caused by external forces.

[0033] To further protect the cable of submersible pump 2, such as Figure 1 As shown, the submersible pump 2 is equipped with a cable conduit 7 that covers its cable, and the cable conduit 7 extends upwards and seals out to the outside of the pump body fixing flange 32. This cable conduit 7 can prevent the cable from being damaged by contact with the port and inner wall of the float during the assembly or disassembly of the submersible pump 2 with the float under hoisting.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope of protection, and all such changes and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A floating submersible electric pump, characterized by, include: The pontoon is composed of a pontoon outer shell and a pontoon inner shell, and an annular sealed cavity is formed between the pontoon outer shell and the pontoon inner shell. A pontoon fixing flange is provided at the top port of the pontoon inner shell. A submersible pump is coaxially installed in the inner shell of the float and is fixed to the float fixing flange via a pump body fixing flange at the upper end of the submersible pump. The water inlet of the submersible pump is located inside the inner shell of the float and communicates with the outside through the bottom port of the inner shell of the float. The water outlet of the submersible pump is located outside the top port of the inner shell of the float, so that the overall draft of the float and the submersible pump is below the top port of the outer shell of the float. The cable of the submersible pump passes through the pump body fixing flange upwards in a sealed manner.

2. The floating submersible electric pump according to claim 1, characterized in that: A water filter screen is installed at the bottom port of the inner shell of the float.

3. The floating submersible electric pump according to claim 1, characterized in that: The bottom port of the inner shell of the float is lower than the bottom port of the outer shell of the float, and the bottom port of the inner shell of the float and the bottom port of the outer shell of the float are sealed by an arc-shaped plug plate.

4. The floating submersible electric pump according to claim 1, characterized in that: A plug plate is provided between the top port of the inner shell of the float and the top port of the outer shell of the float, and float lifting rings are symmetrically arranged on the plug plate along the axis; pump body lifting rings are symmetrically arranged on the pump body fixing flange along the axis.

5. The floating submersible electric pump according to claim 1, characterized in that: The top of the float shell is equipped with a guardrail, which surrounds and protects the top of the submersible pump.

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