Novel water outlet section structure of submersible electric pump for well

Abstract

The utility model discloses a novel well submersible electric pump water outlet section structure which comprises a water outlet section shell, a water inlet and a water outlet are formed in the water outlet section shell, a check valve is arranged in the water outlet section shell, a sealing framework is arranged at the position of the water inlet in the water outlet section shell, the check valve comprises a valve element and a valve seat, the valve element is of a bowl-shaped structure with a W-shaped section, and the valve seat is of a U-shaped structure. The valve seat comprises a limiting frame, a limiting guide hole is formed in the center of the limiting frame, a guide column is fixedly connected to the center of the valve element, the guide column is matched with the limiting guide hole and moves in the limiting guide hole in a lifting and guiding mode, and the water outlet section shell and the limiting frame are integrally cast and formed. According to the integrated casting structure, the time needed during assembly is shortened, the tensile strength is large, and stable operation of the water pump in a severe environment is guaranteed; a guide column and a limiting guide hole are arranged to ensure that the motion trail of the check valve is fixed in the motion direction in the operation process, and deflection displacement is not generated.

Description

Technical Field

[0001] The utility model relates to the technical field of well pump structures, in particular to a novel water outlet joint structure of a submersible electric pump for a well. Background Art

[0002] The biggest feature of the well submersible electric pump is that the motor and pump are made into one body. It is a kind of pump immersed in the groundwater well to suck and transport water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment.

[0003] like Figures 1-3 As shown, the existing well submersible electric pump outlet joint structure includes an outlet joint housing 1, which is provided with a water inlet 6 and a water outlet 7. A check valve is provided in the outlet joint housing, and a sealing frame 4 is provided at the water inlet in the outlet joint housing. The check valve includes a valve core 3 and a valve seat 2. The valve core is a bowl-shaped structure with a W-shaped cross-section. The outer edge of its bottom surface constitutes a sealing portion, which is sealed after contact with the sealing frame. The valve seat includes a ring body 8 and a support frame 9. The ring body is fixedly welded to the outlet joint housing by multiple support frames evenly distributed along the circumference of the ring body. The multiple support frames form a cover to limit the movement of the valve core. The outer concave portion of the outlet joint housing is provided with a groove for hanging the water outlet pull plate.

[0004] However, multiple support frames are fixed in the water outlet joint shell by spot welding. The welding process is complicated, and large residual deformation and welding internal stress are easily formed during the processing, which affects the structural bearing capacity and dimensional stability. The stress concentration at the water outlet joint welding point affects the structural brittleness, resulting in the inability to stabilize the check valve under large flow rates, causing the bracket to break. In addition, defects such as cold welding, leaking welding, and weld penetration are easily generated during the actual manufacturing process.

[0005] At the same time, the lifting of the valve core is only limited and guided by the cover mouth. During operation, the valve core is prone to deflection and displacement, affecting the sealing of the check valve. Utility Model Content

[0006] In order to solve the above technical problems, the utility model designs a novel water outlet section structure of a submersible electric pump for wells.

[0007] The utility model adopts the following technical solutions:

[0008] The utility model provides a novel well submersible electric pump water outlet section structure, including water outlet section casing, be provided with water inlet and water outlet on water outlet section casing, be provided with check valve in water outlet section casing, be equipped with sealing skeleton at water inlet in water outlet section casing, check valve includes valve core and valve seat, and the valve core is the bowl body structure of W shape cross section, and its bottom surface outer edge constitutes the sealing part, and seals after contacting with sealing skeleton, the valve seat includes the spacing frame, and the spacing frame center is provided with spacing guide hole, and the valve core center is fixedly connected with the guide column, and the guide column cooperates with spacing guide hole and lifts and guides movement in spacing guide hole, and water outlet section casing and spacing frame are integrally casted into shape.

[0009] As preferred, the spacing frame is cross-shaped inside the water outlet section casing.

[0010] As preferred, a hanging plate is fixedly arranged outside the water outlet section casing, and a water outlet pull plate is hung on the hanging plate.

[0011] As preferred, the sealing skeleton includes a sealing skeleton body and a sealing lip integrally arranged on the sealing ring body, and the sealing lip is in contact and extrusion sealing with the sealing part of the valve core.

[0012] The utility model discloses a water outlet section casing and spacing frame are integrally casted into shape, and the integral cast structure reduces the time required when assembling, improves the processing efficiency of part, has higher mechanical property, and the tensile strength is big, does not produce deformation under the pressure of big flow, guarantees the stable operation of water pump under the harsh environment, (2), the check valve increases the spacing guide hole on the guide column and spacing frame, guarantees the movement track of check valve, and the movement direction is fixed in the operation process, and does not produce deflection displacement. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic drawing of the use state of the existing well submersible electric pump water outlet section structure;

[0014] Figure 2 It is a structure schematic drawing of the existing well submersible electric pump water outlet section structure;

[0015] Figure 3 It is Figure 2 It is a structure schematic drawing of another angle;

[0016] Figure 4 It is a structure schematic drawing of the use state of the utility model;

[0017] Figure 5 It is a structure schematic drawing of the utility model;

[0018] Figure 6 It is Figure 5 It is a structure schematic drawing of another angle;

[0019] In the figure: 1. Water outlet section housing, 2. Valve seat, 3. Valve core, 4. Sealing frame, 5. Water outlet pull plate, 6. Water inlet, 7. Water outlet, 8. Ring body, 9. Support frame, 10. Guide column, 11. Limiting frame, 12. Limiting guide hole. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0021] Example: Figures 4-6 As shown, a new type of water outlet joint structure of a submersible electric pump for wells includes a water outlet joint shell 1, a water inlet 6 and a water outlet 7 are provided on the water outlet joint shell, a check valve is provided in the water outlet joint shell, a sealing frame 4 is provided at the water inlet in the water outlet joint shell, the check valve includes a valve core 3 and a valve seat 2, the valve core is a bowl-shaped structure with a W-shaped cross-section, the outer edge of its bottom surface constitutes a sealing portion, which is sealed after contact with the sealing frame, the valve seat includes a limit frame 11, a limit guide hole 12 is provided in the center of the limit frame, a guide column 10 is fixedly connected to the center of the valve core, the guide column cooperates with the limit guide hole and moves up and down in the limit guide hole, and the water outlet joint shell and the limit frame are cast as one piece.

[0022] The limiting frame is in a cross shape on the inner side of the water outlet section housing. A hanging plate is fixedly provided on the outer side of the water outlet section housing, and a water outlet pull plate 5 is hung on the hanging plate.

[0023] The sealing frame comprises a sealing frame body and a sealing lip integrally arranged on the sealing ring body, and the sealing lip contacts and squeezes the sealing portion of the valve core to seal.

[0024] The water outlet joint shell and the limit frame of the utility model are cast as one piece. The one-piece casting structure reduces the time required for assembly and improves the processing efficiency of components. It has higher mechanical properties and high tensile strength. It does not deform under large flow pressure, ensuring the stable operation of the water pump in harsh environments. The check valve adds a guide column and a limit guide hole on the limit frame to ensure the movement trajectory of the check valve. The movement direction is fixed during operation and no deflection or displacement occurs.

[0025] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A novel outlet section structure for a submersible electric pump for a well, comprising an outlet section housing, a water inlet and a water outlet provided on the outlet section housing, a check valve provided in the outlet section housing, a sealing frame provided at the water inlet in the outlet section housing, the check valve comprising a valve core and a valve seat, the valve core being a bowl-shaped structure with a W-shaped cross section, the outer edge of the bottom surface of which constitutes a sealing portion, which is sealed after contacting the sealing frame, and is characterized in that: The valve seat includes a limit frame, a limit guide hole is set in the center of the limit frame, a guide column is fixedly connected to the center of the valve core, the guide column cooperates with the limit guide hole and moves up and down in the limit guide hole, and the water outlet node shell and the limit frame are cast as one piece.

2. A new type of water outlet joint structure of a submersible electric pump for a well according to claim 1, characterized in that: The limiting frame is in a cross shape and is located inside the water outlet joint housing.

3. The novel water outlet joint structure of a submersible electric pump for a well according to claim 1 is characterized in that: A hanging plate is fixedly provided on the outer side of the water outlet section housing, and a water outlet pull plate is hung on the hanging plate.

4. The novel water outlet joint structure of a submersible electric pump for a well according to claim 1 is characterized in that: The sealing frame includes a sealing frame body and a sealing lip integrally provided on the sealing ring body. The sealing lip contacts and squeezes the sealing portion of the valve core to form a seal.

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