An automatic submersible pump spray cooling device and method

Abstract

This invention discloses an automatic submersible pump spray cooling device and method, comprising a submersible pump body, an outlet pipe fixedly connected to the outlet of the submersible pump body, a water inlet pipe fixedly connected to the outside of the outlet pipe, a hand valve provided on the outside of the water inlet pipe, a connecting block fixedly connected to the outside of the submersible pump body, a water baffle fixedly connected to the upper side of the connecting block, a cooling unit provided on the upper side of the water baffle, the cooling unit including a cover plate fixedly connected to the upper side of the water baffle, and a rotating pipe rotatably connected to the upper side of the cover plate. This invention relates to the field of submersible pump technology. This automatic submersible pump spray cooling device and method, by providing a water inlet pipe, an outlet pipe, a hand valve, a cover plate, a rotating pipe, a turntable, an annular pipe, a vertical plate, and spray heads, facilitates the pump body cooling at low water levels by having multiple spray heads rotate around the pump body and spray water onto the pump body surface, thus facilitating normal operation of the pump body.

Description

Technical Field

[0001] This invention relates to the field of submersible pump technology, specifically to an automatic submersible pump spray cooling device and method. Background Technology

[0002] A submersible pump is a water treatment tool that combines a pump and a motor into a closed unit suitable for submersible installation. Coal chemical industry refers to a series of processes that use coal as raw material, transforming it through chemical processing methods into gaseous, liquid, and solid products or semi-finished products, thereby producing various chemicals and fuels.

[0003] When using a submersible pump, if the medium being pumped is below the height of the pump body, the pump body will continue to run without dissipating heat, which may cause the submersible pump to stop or malfunction, and it will be unable to complete the delivery of the remaining medium. Using an automatic spray device can extend the service life of the submersible pump and alleviate the problem of the pump body overheating. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic submersible pump spray cooling device and method, which solves the problem that the submersible pump cannot dissipate heat when operating at low water levels, thus affecting the pump's performance.

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

[0006] An automatic submersible pump spray cooling device includes a submersible pump body, an outlet pipe fixedly connected to the outlet of the submersible pump body, a water inlet pipe fixedly connected to the outside of the outlet pipe, a hand valve provided on the outside of the water inlet pipe, a connecting block fixedly connected to the outside of the submersible pump body, a water baffle fixedly connected to the upper side of the connecting block, and a cooling unit provided on the upper side of the water baffle.

[0007] The cooling unit includes a cover plate fixedly connected to the upper side of the water baffle. A rotating pipe is rotatably connected to the upper side of the cover plate. The lower end of the rotating pipe passes through the lower side of the cover plate and is fixedly connected to a turntable on its outer side. A motor is fixedly connected to the upper side of the cover plate. A gear is fixedly connected to the outer side of both the motor output end and the outer side of the rotating pipe. Multiple connecting pipes are fixedly connected to the outer side of the lower end of the rotating pipe. An annular pipe is fixedly connected to the outer side of each connecting pipe. Multiple vertical plates are fixedly connected to the lower side of the turntable. Lifting grooves are formed on the outer side of each vertical plate. The inner side of the lifting trough is slidably connected to a lifting block, and two side blocks are fixedly connected to the side of the annular pipe. A rotating rod is rotatably connected between the two side blocks. A swing plate is fixedly connected to the outer side of the rotating rod. A side plate is fixedly connected to the outer side of the swing plate. Two mounting blocks are fixedly connected to the outer side of the side plate. A fixing pipe is fixedly connected between the two mounting blocks. Multiple spray heads are fixedly connected to the outer side of the fixing pipe. A branch pipe is fixedly connected between the fixing pipe and the annular pipe. A conveying pipe is provided between the water inlet pipe and the rotating pipe.

[0008] Preferably, the upper end of the rotating rod passes through the upper side of the side block and is fixedly connected to a bevel gear, the upper side of the side block is fixedly connected to a top block, the outer side of the top block is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a bevel gear, the other end of the rotating shaft is fixedly connected to a gear component, and the side of the vertical plate near the annular tube is fixedly connected to a toothed plate.

[0009] Preferably, the second gear component meshes with the gear plate, and the first bevel gear meshes with the second bevel gear.

[0010] Preferably, a rotating rod two is rotatably connected to the side of the upright plate away from the annular tube, a cam is fixedly connected to the outer end of the rotating rod two, a gear component three is fixedly connected to the outer side of the rotating rod two, a fixing rod is fixedly connected to the lower side of the cover plate, a gear ring is fixedly connected to the lower end of the fixing rod, the gear ring meshes with the gear component three, a connecting plate is rotatably connected to the outer side of the cam, and the connecting plate is rotatably connected to the lifting block.

[0011] Preferably, the conveying pipe is rotatably connected to the rotating pipe.

[0012] Preferably, a guide groove is provided on the lower side of the cover plate, and a guide block is slidably connected to the inner side of the guide groove. The guide block is fixedly connected to the turntable, and the guide groove is circular.

[0013] Preferably, a water-blocking cover is fixedly connected to the upper side of the cover plate.

[0014] A method for cooling an automatic submersible pump by spraying water includes the following steps:

[0015] S1. Place the submersible pump body in the water. When the water level is low, start the pump body and open the hand valve.

[0016] S2. Start the motor and control multiple spray heads to rotate around the pump body;

[0017] S3. The spray head sprays water onto the surface of the pump body to cool the surface of the pump body. The spray head moves up and down repeatedly to cool down the surface.

[0018] S4. The submersible pump body continues to be used normally.

[0019] Beneficial effects

[0020] This invention provides an automatic submersible pump spray cooling device and method. Compared with the prior art, it has the following advantages:

[0021] (1) The automatic submersible pump spray cooling device and method are equipped with a water inlet pipe, a water outlet pipe, a hand valve, a cover plate, a rotating pipe, a turntable, an annular pipe, a vertical plate and spray heads. This allows multiple spray heads to rotate around the pump body and spray water onto the surface of the pump body when the water level is low, thereby cooling the pump body and facilitating its normal use.

[0022] (2) The automatic submersible pump spray cooling device and method are equipped with a lifting block, a side block, a rotating rod, a swing plate, a side plate, a gear component and a toothed plate, which facilitates the repeated swinging of the spray head, so that the spray head moves up and down repeatedly, thereby increasing the range of the spray head cooling the pump body and increasing the cooling area. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the cooling unit in this invention;

[0025] Figure 3 This is a three-dimensional structural view of the cooling unit in this invention from another perspective;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a three-dimensional structural diagram of the neutral plate in this invention;

[0028] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0029] Figure 7 This is a three-dimensional structural view of the neutral plate in this invention from another perspective;

[0030] Figure 8 This is a bottom-view perspective view of the cooling unit in this invention.

[0031] In the diagram: 1. Submersible pump body; 2. Outlet pipe; 3. Inlet pipe; 4. Hand valve; 5. Connecting block; 6. Water baffle; 7. Cooling unit; 701. Cover plate; 702. Rotary pipe; 703. Gear component one; 704. Motor; 705. Conveying pipe; 706. Guide groove; 707. Guide block; 708. Turntable; 709. Connecting pipe; 710. Annular pipe; 711. Fixing rod; 712. Gear ring; 713. Vertical plate; 714. Lifting groove; 7 15. Lifting block; 716. Side block; 717. Rotating rod one; 718. Swing plate; 719. Side plate; 720. Mounting block; 721. Fixing pipe; 722. Spray head; 723. Branch pipe; 724. Bevel gear one; 725. Bevel gear two; 726. Top block; 727. Rotating shaft; 728. Gear component two; 729. Gear plate; 730. Rotating rod two; 731. Gear component three; 732. Cam; 733. Connecting plate; 8. Water baffle. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the 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 within the scope of protection of the present invention.

[0033] Example 1:

[0034] Please see Figure 1 - Figure 6 , Figure 8 The present invention provides a technical solution: an automatic submersible pump spray cooling device, including a submersible pump body 1, a water outlet pipe 2 fixedly connected to the water outlet of the submersible pump body 1, a water inlet pipe 3 fixedly connected to the outside of the water outlet pipe 2, a hand valve 4 provided on the outside of the water inlet pipe 3, a connecting block 5 fixedly connected to the outside of the submersible pump body 1, a water baffle 6 fixedly connected to the upper side of the connecting block 5, a cooling unit 7 provided on the upper side of the water baffle 6, and a water baffle 8 fixedly connected to the upper side of the cover plate 701, the water baffle 8 facilitating the blocking of water.

[0035] The cooling unit 7 includes a cover plate 701, which is fixedly connected to the upper side of the water baffle 6. A rotating pipe 702 is rotatably connected to the upper side of the cover plate 701. The lower end of the rotating pipe 702 passes through the lower side of the cover plate 701 and is fixedly connected to a turntable 708 on its outer side. A motor 704 is fixedly connected to the upper side of the cover plate 701. Gear components 703 are fixedly connected to the outer side of both the output end of the motor 704 and the outer side of the rotating pipe 702. Multiple connecting pipes 709 are fixedly connected to the outer side of the lower end of the rotating pipe 702. An annular pipe 710 is fixedly connected to the outer side of the connecting pipes 709. Multiple vertical plates 713 are fixedly connected to the lower side of the turntable 708. Lifting and lowering functions are provided on the outer side of the vertical plates 713. The inner side of the trough 714 is slidably connected to a lifting block 715. Two side blocks 716 are fixedly connected to the side of the annular pipe 710. A rotating rod 717 is rotatably connected between the two side blocks 716. A swing plate 718 is fixedly connected to the outer side of the rotating rod 717. A side plate 719 is fixedly connected to the outer side of the swing plate 718. Two mounting blocks 720 are fixedly connected to the outer side of the side plate 719. A fixing pipe 721 is fixedly connected between the two mounting blocks 720. Multiple spray heads 722 are fixedly connected to the outer side of the fixing pipe 721. A branch pipe 723 is fixedly connected between the fixing pipe 721 and the annular pipe 710. The water inlet pipe 3 and the rotating pipe 70... A conveying pipe 705 is provided between the two pipes, and the conveying pipe 705 is rotatably connected to the rotating pipe 702. A guide groove 706 is provided on the lower side of the cover plate 701. A guide block 707 is slidably connected to the inner side of the guide groove 706. The guide block 707 is fixedly connected to the turntable 708. The guide groove 706 is circular. When the submersible pump body 1 is at a low water level, the hand valve 4 is opened and the submersible pump body 1 is started, so that water is discharged through the outlet pipe 2 and flows into the rotating pipe 702 through the water inlet pipe 3. Then, through multiple connecting pipes 709, the water flows into the annular pipe 710. Finally, through multiple branch pipes 723, the water enters multiple fixed pipes 721, which are convenient for multiple spray heads. Water is sprayed onto the surface of the submersible pump body 1 by 722 to cool the pump body when it is at a low water level, making it easier to use. During cooling, the motor 704 is started, which drives the gear 703 to rotate. Since the two gears 703 are meshed, the motor 704 drives the rotating pipe 702 to rotate, which in turn drives the turntable 708 to rotate. The turntable 708 drives the vertical plate 713 to rotate, which in turn drives the spray head 722 on the fixed pipe 721 to rotate, so that the spray head 722 rotates around the pump body, allowing the spray head 722 to cool the surface of the pump body, making it easier to use the submersible pump body 1 when it is at a low water level.

[0036] Example 2:

[0037] Based on Example 1, such as Figure 1 - Figure 8As shown, an automatic submersible pump spray cooling device includes a submersible pump body 1, a water outlet pipe 2 fixedly connected to the outlet of the submersible pump body 1, a water inlet pipe 3 fixedly connected to the outside of the water outlet pipe 2, a hand valve 4 provided on the outside of the water inlet pipe 3, a connecting block 5 fixedly connected to the outside of the submersible pump body 1, a water baffle 6 fixedly connected to the upper side of the connecting block 5, a cooling unit 7 provided on the upper side of the water baffle 6, and a water baffle 8 fixedly connected to the upper side of the cover plate 701, which facilitates the blocking of water.

[0038] The cooling unit 7 includes a cover plate 701, which is fixedly connected to the upper side of the water baffle 6. A rotating pipe 702 is rotatably connected to the upper side of the cover plate 701. The lower end of the rotating pipe 702 passes through the lower side of the cover plate 701 and is fixedly connected to a turntable 708 on its outer side. A motor 704 is fixedly connected to the upper side of the cover plate 701. Gear components 703 are fixedly connected to the outer side of both the output end of the motor 704 and the outer side of the rotating pipe 702. Multiple connecting pipes 709 are fixedly connected to the outer side of the lower end of the rotating pipe 702. An annular pipe 710 is fixedly connected to the outer side of the connecting pipes 709. Multiple vertical plates 713 are fixedly connected to the lower side of the turntable 708. Lifting and lowering functions are provided on the outer side of the vertical plates 713. The inner side of the trough 714 is slidably connected to a lifting block 715. Two side blocks 716 are fixedly connected to the side of the annular pipe 710. A rotating rod 717 is rotatably connected between the two side blocks 716. A swing plate 718 is fixedly connected to the outer side of the rotating rod 717. A side plate 719 is fixedly connected to the outer side of the swing plate 718. Two mounting blocks 720 are fixedly connected to the outer side of the side plate 719. A fixing pipe 721 is fixedly connected between the two mounting blocks 720. Multiple spray heads 722 are fixedly connected to the outer side of the fixing pipe 721. A branch pipe 723 is fixedly connected between the fixing pipe 721 and the annular pipe 710. The water inlet pipe 3 and the rotating pipe 70... A conveying pipe 705 is provided between the two pipes, and the conveying pipe 705 is rotatably connected to the rotating pipe 702. A guide groove 706 is provided on the lower side of the cover plate 701. A guide block 707 is slidably connected to the inner side of the guide groove 706. The guide block 707 is fixedly connected to the turntable 708. The guide groove 706 is circular. When the submersible pump body 1 is at a low water level, the hand valve 4 is opened and the submersible pump body 1 is started, so that water is discharged through the outlet pipe 2 and flows into the rotating pipe 702 through the water inlet pipe 3. Then, through multiple connecting pipes 709, the water flows into the annular pipe 710. Finally, through multiple branch pipes 723, the water enters multiple fixed pipes 721, which are convenient for multiple spray heads. Water is sprayed onto the surface of the submersible pump body 1 by 722 to cool the pump body when it is at a low water level, making it easier to use. During cooling, the motor 704 is started, which drives the gear 703 to rotate. Since the two gears 703 are meshed, the motor 704 drives the rotating pipe 702 to rotate, which in turn drives the turntable 708 to rotate. The turntable 708 drives the vertical plate 713 to rotate, which in turn drives the spray head 722 on the fixed pipe 721 to rotate, so that the spray head 722 rotates around the pump body, allowing the spray head 722 to cool the surface of the pump body, making it easier to use the submersible pump body 1 when it is at a low water level.

[0039] The upper end of the rotating rod 717 passes through the upper side of the side block 716 and is fixedly connected to a bevel gear 724. A top block 726 is fixedly connected to the upper side of the side block 716. A rotating shaft 727 is rotatably connected to the outer side of the top block 726. A bevel gear 725 is fixedly connected to one end of the rotating shaft 727, and a gear component 728 is fixedly connected to the other end of the rotating shaft 727. A toothed plate 729 is fixedly connected to the side of the vertical plate 713 near the annular tube 710. Gear component 728 meshes with the toothed plate 729. Bevel gear 724 meshes with bevel gear 725. The vertical plate 713 is away from the annular tube. A rotating rod 730 is rotatably connected to one side of 710. A cam 732 is fixedly connected to the outer end of the rotating rod 730. A gear 731 is fixedly connected to the outer side of the rotating rod 730. A fixing rod 711 is fixedly connected to the lower side of the cover plate 701. A gear ring 712 is fixedly connected to the lower end of the fixing rod 711. The gear ring 712 meshes with the gear 731. A connecting plate 733 is rotatably connected to the outer side of the cam 732. The connecting plate 733 is rotatably connected to the lifting block 715. When the turntable 708 rotates, the turntable 708 drives the vertical plate 713 to rotate, and the vertical plate 713 drives the rotating rod 730 to rotate. Gear component 731 on 730 rotates. Because gear component 731 meshes with gear ring 712, it rotates on its own axis. Gear component 731 drives rotating rod 730 to rotate, which in turn drives cam 732 to rotate. Cam 732 drives connecting plate 733 to rotate, causing lifting block 715 to move up and down repeatedly. Lifting block 715 drives side plate 719 to move, which in turn drives spray head 722 on fixed pipe 721 to move up and down repeatedly, increasing the spray range. Simultaneously, lifting block 715 drives side block 716 to move up and down, which in turn drives rotating shaft 727... The gear component 728 moves up and down. Since the gear component 728 meshes with the gear plate 729, the gear component 728 rotates repeatedly in both directions. The gear component 728 drives the rotating shaft 727 to rotate, the rotating shaft 727 drives the bevel gear 725 to rotate, the bevel gear 725 drives the bevel gear 724 to rotate, the bevel gear 724 drives the rotating rod 717 to rotate, the rotating rod 717 drives the swing plate 718 to swing, the swing plate 718 drives the side plate 719 to swing, and the side plate 719 drives the spray head 722 on the fixed pipe 721 to swing, which facilitates the cooling of the pump body surface.

[0040] A method for cooling an automatic submersible pump by spraying water includes the following steps:

[0041] S1. Place the submersible pump body 1 in water. When the water level is low, start the pump body and control the hand valve 4 to open. Control the output flow rate through the hand valve 4. When the pump body is in use, water is discharged through the outlet pipe 2. By controlling the hand valve 4, water is introduced into the spray head 722 through the water inlet pipe 3, so that the spray head 722 sprays water on the upper side and surface of the submersible pump body 1. This facilitates the exchange of heat dissipated by the submersible pump body 1 with the sprayed water, which is convenient for the normal use of the submersible pump body 1 and avoids the submersible pump body 1 being unable to dissipate heat properly when the water level is low, which would affect the use of the submersible pump body 1.

[0042] S2. Start the motor 704 to control multiple spray heads 722 to rotate around the pump body. The motor 704 drives the rotating pipe 702 to rotate, the rotating pipe 702 drives the turntable 708 to rotate, and the turntable 708 drives multiple spray heads 722 on the vertical plate 713 to rotate, which facilitates comprehensive cooling and heat dissipation. The water baffle 8 is used to protect the motor 704.

[0043] S3. The spray head 722 sprays water onto the surface of the pump body to cool it. The spray head 722 moves up and down repeatedly to cool the pump body 1. While cooling the submersible pump body 1, the turntable 708 is controlled to rotate. The turntable 708 drives the gear component 731 on the vertical plate 713 to rotate. Under the action of the gear ring 712, the rotating shaft 727 on the gear component 731 is controlled to rotate. The rotating shaft 727 drives the cam 732 to rotate. Under the action of the connecting plate 733, the spray head 722 on the fixed pipe 721 is controlled to move up and down repeatedly. Through the gear component 728 and the gear plate 729, the spray head 722 is controlled to swing repeatedly to increase the spray area and facilitate the cooling of the submersible pump body 1.

[0044] S4. Submersible pump body 1 continues to be used normally.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic submersible pump spray cooling device, comprising a submersible pump body (1), characterized in that: The outlet of the submersible pump body (1) is fixedly connected to a water outlet pipe (2), and a water inlet pipe (3) is fixedly connected to the outside of the water outlet pipe (2). A hand valve (4) is provided on the outside of the water inlet pipe (3). A connecting block (5) is fixedly connected to the outside of the submersible pump body (1). A water baffle (6) is fixedly connected to the upper side of the connecting block (5). A cooling unit (7) is provided on the upper side of the water baffle (6). The cooling unit (7) includes a cover plate (701), which is fixedly connected to the upper side of the water baffle (6). A rotating pipe (702) is rotatably connected to the upper side of the cover plate (701). The lower end of the rotating pipe (702) passes through the lower side of the cover plate (701) and is fixedly connected to a turntable (708) on its outer side. A motor (704) is fixedly connected to the upper side of the cover plate (701). A gear component (703) is fixedly connected to the outer side of the output end of the motor (704) and the outer side of the rotating pipe (702). Multiple connecting pipes (709) are fixedly connected to the outer side of the lower end of the rotating pipe (702). An annular pipe (710) is fixedly connected to the outer side of the connecting pipe (709). Multiple vertical plates (713) are fixedly connected to the lower side of the turntable (708). A lifting groove (714) is opened on the outer side of the vertical plate (713). The inner side of the lifting trough (714) is slidably connected to a lifting block (715). Two side blocks (716) are fixedly connected to the side of the annular pipe (710). A rotating rod (717) is rotatably connected between the two side blocks (716). A swing plate (718) is fixedly connected to the outer side of the rotating rod (717). A side plate (719) is fixedly connected to the outer side of the swing plate (718). Two mounting blocks (720) are fixedly connected to the outer side of the side plate (719). A fixed pipe (721) is fixedly connected between the two mounting blocks (720). Multiple spray heads (722) are fixedly connected to the outer side of the fixed pipe (721). A branch pipe (723) is fixedly connected between the fixed pipe (721) and the annular pipe (710). A conveying pipe (705) is provided between the water inlet pipe (3) and the rotating pipe (702).

2. The automatic submersible pump spray cooling device according to claim 1, characterized in that: The upper end of the rotating rod (717) passes through the upper side of the side block (716) and is fixedly connected to the bevel gear (724). The upper side of the side block (716) is fixedly connected to the top block (726). The outer side of the top block (726) is rotatably connected to the rotating shaft (727). One end of the rotating shaft (727) is fixedly connected to the bevel gear (725). The other end of the rotating shaft (727) is fixedly connected to the gear component (728). The side of the vertical plate (713) near the annular tube (710) is fixedly connected to the toothed plate (729).

3. The automatic submersible pump spray cooling device according to claim 2, characterized in that: The second gear (728) meshes with the toothed plate (729), and the first bevel gear (724) meshes with the second bevel gear (725).

4. The automatic submersible pump spray cooling device according to claim 1, characterized in that: The upright plate (713) is rotatably connected to a rotating rod two (730) on the side away from the annular tube (710). The outer end of the rotating rod two (730) is fixedly connected to a cam (732). The outer side of the rotating rod two (730) is fixedly connected to a gear component three (731). The lower side of the cover plate (701) is fixedly connected to a fixing rod (711). The lower end of the fixing rod (711) is fixedly connected to a gear ring (712). The gear ring (712) meshes with the gear component three (731). The outer side of the cam (732) is rotatably connected to a connecting plate (733). The connecting plate (733) is rotatably connected to the lifting block (715).

5. An automatic submersible pump spray cooling device according to claim 1, characterized in that: The delivery pipe (705) is rotatably connected to the rotating pipe (702).

6. The automatic submersible pump spray cooling device according to claim 1, characterized in that: The cover plate (701) has a guide groove (706) on its lower side. A guide block (707) is slidably connected to the inner side of the guide groove (706). The guide block (707) is fixedly connected to the turntable (708). The guide groove (706) is a circular structure.

7. An automatic submersible pump spray cooling device according to claim 1, characterized in that: A water-blocking cover (8) is fixedly connected to the upper side of the cover plate (701).

8. A method for spray cooling of an automatic submersible pump, comprising an automatic submersible pump spray cooling device according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Place the submersible pump body (1) in the water. When the water level is low, start the pump body and control the hand valve (4) to open. S2. Start the motor (704) to control multiple spray heads (722) to rotate around the pump body; S3. The spray head (722) sprays water onto the surface of the pump body to cool the surface of the pump body. The spray head (722) moves up and down repeatedly to cool down the surface. S4. Submersible pump body (1) continues to be used normally.

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