Submersible pump with exhaust structure

Abstract

The submersible pump with the exhaust structure comprises an outer shell and a motor shell arranged in the outer shell, a mounting end cover is connected to the motor shell, a containing cavity is defined by the mounting end cover, the outer shell and the motor shell, and the exhaust structure is arranged on the mounting end cover; the exhaust structure comprises an exhaust pipe arranged on the installation end cover, the exhaust pipe is used for communicating the containing cavity with an inner cavity of the installation end cover, a plugging piece for plugging the exhaust pipe is arranged on the installation end cover, and a fixing part for fixing the plugging piece is arranged on the installation end cover. Through the exhaust structure, the filling speed of the mounting end cover can be increased underwater, the situation that water cannot be discharged normally when the submersible pump works due to air trapping in a cavity is avoided, and the using effect of the submersible pump is improved.

Description

Technical Field

[0001] This application relates to the technical field of submersible pumps, and in particular to a submersible pump with an exhaust structure. Background Technology

[0002] Submersible pumps are important equipment for deep well water extraction. When in use, the entire unit is submerged in water to extract groundwater to the surface. They are used for domestic water supply, mine rescue, industrial cooling, farmland irrigation, seawater lifting, etc.

[0003] In the existing technology, submersible pumps do not have an exhaust structure during descent. During descent, the air inside the submersible pump cannot be expelled in a timely and effective manner. This trapped air can cause the submersible pump to fail to pump water normally, affecting its performance. Therefore, there is room for improvement. Utility Model Content

[0004] To improve the performance of submersible pumps, this application provides a submersible pump with an exhaust structure.

[0005] The submersible pump with an exhaust structure provided in this application adopts the following technical solution:

[0006] A submersible pump with an exhaust structure includes an outer casing and a motor housing disposed within the outer casing. A mounting end cover is connected to the motor housing, and the mounting end cover, the outer casing, and the motor housing enclose a receiving cavity. An exhaust structure is provided on the mounting end cover.

[0007] The exhaust structure includes an exhaust pipe disposed on the mounting end cover. The exhaust pipe is used to connect the accommodating cavity and the inner cavity of the mounting end cover. The mounting end cover is provided with a sealing element for sealing the exhaust pipe, and the mounting end cover is provided with a fixing part for fixing the sealing element.

[0008] Preferably, the sealing component includes a paddle and an elastic rod connected to the paddle, the fixing part is used to fix the elastic rod on the mounting end cap, and the paddle is horizontally positioned below the outlet of the exhaust pipe.

[0009] Preferably, the paddle is bowl-shaped.

[0010] Preferably, the outlet of the exhaust pipe is provided with an arc surface that matches the outer wall surface of the paddle.

[0011] Preferably, the sealing component includes a sealing gasket and connecting rods connected to both sides of the sealing gasket. The fixing part is used to fix the connecting rods to the mounting end cap, and the sealing gasket is horizontally placed below the outlet of the exhaust pipe.

[0012] Preferably, the sealing gasket is embedded with a metal sheet.

[0013] Preferably, a plurality of pads are provided along the edge of the exhaust pipe opening, and the plurality of pads are distributed at intervals along the circumferential direction of the exhaust pipe.

[0014] Preferably, the fixing part includes a connecting post and a connecting screw. The connecting post is disposed inside the mounting end cover, and the connecting screw is threaded onto the connecting post and presses against the sealing member.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] In this application, when the submersible pump is placed in water, the water entering from the submersible pump inlet will expel the gas in the mounting end cover through the vent pipe to the receiving cavity, and then out of the submersible pump through the receiving cavity. As the gas is expelled, the mounting end cover slowly fills with water, and as the pressure gradually increases, the sealing component seals the opening of the vent pipe. Through the above-mentioned venting structure, the filling speed of the mounting end cover can be increased underwater, preventing the submersible pump from being unable to discharge water normally due to trapped air in the cavity, thereby improving the performance of the submersible pump. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a submersible pump.

[0018] Figure 2 This is a schematic diagram of the exhaust structure installation.

[0019] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0020] Figure 4 This is a schematic diagram of the structure for installing the end cap.

[0021] Figure 5 This is a structural schematic diagram of one embodiment of the sealing component.

[0022] Figure 6 This is a structural schematic diagram of another embodiment of the sealing component.

[0023] Explanation of reference numerals in the attached drawings: 1. Outer casing; 2. Motor housing; 3. Mounting end cover; 4. Pump body; 5. Receptacle; 6. Motor; 61. Motor cover; 62. Rotor assembly; 63. Stator assembly; 7. Impeller; 8. Exhaust structure; 81. Exhaust pipe; 811. Exhaust hole; 812. Arc surface; 813. Pad; 82. Sealing component; 821. Paddle; 822. Elastic rod; 823. Sealing gasket; 824. Connecting rod; 825. Metal sheet; 83. Fixing part; 831. Connecting column; 832. Connecting screw. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] A submersible pump with an exhaust structure, see reference Figure 1 and Figure 2 As shown, the device includes an outer casing 1, a motor housing 2, a mounting end cover 3, and a pump body 4. The motor housing 2 is disposed inside the outer casing 1 and is integrally formed on the outer casing 1. The mounting end cover 3 is connected to the motor housing 2 via a flange. The pump body 4 is connected to the mounting end cover 3 via a flange. The edge of the mounting end cover 3 abuts against the lower end of the outer casing 1. The outer casing 1, the mounting end cover 3, and the motor housing 2 together form a receiving cavity 5. The outer casing 1 is provided with a connecting hole, and the receiving cavity 5 communicates with the outside through the connecting hole. The outer casing 1 is provided with a handle, and the connecting hole is located at the connection between the handle and the outer casing 1.

[0026] A motor 6 is installed inside the motor housing 2. The motor 6 includes a motor housing 6 cover fixed inside the motor housing 2. A rotor component 62 is rotatably installed inside the motor housing 6 cover. A stator component 63 that cooperates with the rotor component 62 is installed inside the motor housing 6 cover. The rotor shaft of the rotor component 62 extends out of the motor housing 6 cover and into the pump body 4. The motor housing 6 cover and the rotor shaft are sealed by a mechanical seal to prevent water from the pump body 4 from entering the motor housing 6 cover.

[0027] The pump body 4 is equipped with an inlet and an outlet. An impeller 7 is installed inside the pump body 4. The rotor shaft extends into the pump body 4 and is connected to the impeller 7. The impeller 7 is driven to rotate by the motor 6, which can draw water in from the inlet and discharge it from the outlet.

[0028] The inner cavity of the mounting end cover 3 is connected to the pump body 4. When the submersible pump is immersed in water, the water first enters through the inlet. In order to prevent the submersible pump from being unable to output water normally due to trapped air in the cavity, it is necessary to expel the air from the pump body 4 and the mounting end cover 3 as soon as possible.

[0029] In this embodiment, the mounting end cover 3 is provided with an exhaust structure 8. The exhaust structure 8 can connect the inner cavity of the mounting end cover 3 with the accommodating cavity 5, thereby allowing the air in the mounting end cover 3 to be discharged through the exhaust structure 8. After the air in the mounting end cover 3 is completely discharged, the exhaust structure 8 can be sealed, thereby avoiding any impact on the flow rate of the submersible pump.

[0030] The exhaust structure 8 will be described in detail below.

[0031] Reference Figure 2 , Figure 3 and Figure 4As shown, the exhaust structure 8 includes an exhaust pipe 81 disposed on the mounting end cover 3. The exhaust pipe 81 is disposed in a vertical direction. An exhaust hole 811 is axially passed through the exhaust pipe 81. The exhaust pipe 81 is used to connect the accommodating cavity 5 and the inner cavity of the mounting end cover 3. A sealing member 82 is disposed on the mounting end cover 3 to block the exhaust pipe 81. A fixing part 83 is disposed on the mounting end cover 3 to fix the sealing member 82.

[0032] In one embodiment, refer to Figure 3 and Figure 5 As shown, the sealing component 82 includes a paddle 821 and an elastic rod 822 connected to the paddle 821. The paddle 821 and the elastic rod 822 can be made of metal or plastic. The paddle 821 serves to block the opening of the exhaust pipe 81, and the elastic rod 822 allows the paddle 821 to swing up and down. The fixing part 83 is used to fix the elastic rod 822 to the mounting end cover 3. The paddle 821 is horizontally placed below the opening of the exhaust pipe 81.

[0033] The paddle 821 is bowl-shaped with its bowl-shaped opening facing downwards. The bowl-shaped arc surface of the paddle 821 contacts the opening of the exhaust pipe 81. The opening of the exhaust pipe 81 is provided with an arc surface 812 that matches the outer wall surface of the paddle 821.

[0034] When the submersible pump is not submerged in water, the lever 821 is horizontally placed below the opening of the exhaust pipe 81, and a certain exhaust gap is formed between the lever 821 and the opening of the exhaust pipe 81.

[0035] When the submersible pump is immersed in water, the water entering from the submersible pump inlet will expel the gas in the mounting end cover 3 from the exhaust pipe 81 to the receiving cavity 5, and then out of the submersible pump through the receiving cavity 5. As the gas is expelled, the mounting end cover 3 slowly fills with water, and as the pressure gradually increases, the paddle 821 floats up due to buoyancy until it blocks the opening of the exhaust pipe 81.

[0036] In another embodiment, refer to Figure 3 and Figure 6 As shown, the sealing component 82 includes a sealing gasket 823 and a connecting rod 824 connected to both sides of the sealing gasket 823. The fixing part 83 is used to fix the connecting rod 824 to the mounting end cover 3. The sealing gasket 823 is horizontally placed below the opening of the exhaust pipe 81. The sealing gasket 823 is made of rubber, and the connecting rod 824 is made of rubber or metal. The connecting rod 824 has a certain elasticity, which allows the sealing gasket 823 to swing up and down.

[0037] The sealing gasket 823 has a metal sheet 825 embedded inside, which can improve the sealing and support effect of the sealing gasket 823. The exhaust pipe 81 has several pads 813 along the edge of the pipe opening, and the pads 813 are spaced apart along the circumferential direction of the exhaust pipe 81.

[0038] When the submersible pump is not submerged in water, the sealing gasket 823 is horizontally placed below the opening of the exhaust pipe 81, and a certain exhaust gap is formed between the sealing gasket 823 and the opening of the exhaust pipe 81.

[0039] When the submersible pump is immersed in water, the water entering from the submersible pump inlet will expel the gas in the mounting end cover 3 from the exhaust pipe 81 to the receiving cavity 5, and then out of the submersible pump through the receiving cavity 5. As the gas is expelled, the mounting end cover 3 slowly fills with water, and as the pressure gradually increases, the sealing gasket 823 floats up due to buoyancy until it blocks the opening of the exhaust pipe 81.

[0040] In this process, the sealing gasket 823 first abuts against the pad block 813, leaving a certain gap between the sealing gasket 823 and the exhaust pipe 81. After the air inside the installation end cover 3 is completely emptied, the sealing gasket 823 slowly presses against the opening of the exhaust pipe 81 under the action of buoyancy to seal it.

[0041] Reference Figure 5 and Figure 6 As shown, the fixing part 83 includes a connecting post 831 and a connecting screw 832. The connecting post 831 is disposed inside the mounting end cover 3, and the connecting screw 832 is threaded onto the connecting post 831 and presses against the sealing member 82.

[0042] When the sealing component 82 uses a paddle 821, the number of fixing parts 83 is the same as the number of elastic parts of the sealing component 82, which is one, and the connecting screw 832 presses the elastic parts of the sealing component 82.

[0043] When the sealing gasket 823 is used for the sealing component 82, the number of fixing parts 83 is the same as the number of connecting rods 824 of the sealing component 82, which is two. The fixing parts 83 are set on both sides of the exhaust pipe 81, and the connecting screws 832 press the connecting rods 824 of the sealing component 82.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A submersible pump with an exhaust structure, comprising a housing (1) and a motor housing (2) disposed within the housing (1), wherein a mounting end cap (3) is connected to the motor housing (2), characterized in that: The mounting end cover (3), the outer shell (1) and the motor shell (2) form a receiving cavity (5), and the mounting end cover (3) is provided with an exhaust structure (8); The exhaust structure (8) includes an exhaust pipe (81) disposed on the mounting end cover (3). The exhaust pipe (81) is used to connect the accommodating cavity (5) and the inner cavity of the mounting end cover (3). The mounting end cover (3) is provided with a sealing member (82) to block the exhaust pipe (81). The mounting end cover (3) is provided with a fixing part (83) to fix the sealing member (82).

2. The submersible pump with exhaust structure according to claim 1, characterized in that: The sealing component (82) includes a paddle (821) and an elastic rod (822) connected to the paddle (821). The fixing part (83) is used to fix the elastic rod (822) on the mounting end cap (3). The paddle (821) is horizontally positioned below the opening of the exhaust pipe (81).

3. The submersible pump with exhaust structure according to claim 2, characterized in that: The paddle (821) is bowl-shaped.

4. The submersible pump with exhaust structure according to claim 3, characterized in that: The exhaust pipe (81) has an arc surface (812) at its opening that is adapted to the outer wall surface of the paddle (821).

5. The submersible pump with exhaust structure according to claim 1, characterized in that: The sealing component (82) includes a sealing gasket (823) and a connecting rod (824) connected to both sides of the sealing gasket (823). The fixing part (83) is used to fix the connecting rod (824) on the mounting end cap (3). The sealing gasket (823) is horizontally placed below the opening of the exhaust pipe (81).

6. The submersible pump with exhaust structure according to claim 5, characterized in that: The sealing gasket (823) is embedded with a metal sheet (825).

7. The submersible pump with exhaust structure according to claim 5, characterized in that: The exhaust pipe (81) has several pads (813) arranged along the edge of the pipe opening, and the several pads (813) are spaced apart along the circumferential direction of the exhaust pipe (81).

8. The submersible pump with exhaust structure according to claim 1, characterized in that: The fixing part (83) includes a connecting post (831) and a connecting screw (832). The connecting post (831) is disposed inside the mounting end cover (3), and the connecting screw (832) is threaded onto the connecting post (831) and presses against the sealing member (82).

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