A kind of submersible pump motor winding moisture-proof device

Abstract

The utility model provides a kind of submersible pump motor winding dampproofing device, belong to the technical field of submersible pump, including sealing component, including pump shell and first protective housing, the top of pump shell is connected with end cover by bolt fixedly, the top of end cover is fixedly connected with lifting ring, the inside of end cover is fixedly connected with motor cable, the outside of pump shell is provided with surrounding subassembly, the outside of first protective housing is provided with positioning assembly. The sealing component is set, the original flange sealing structure of submersible pump can provide a reliable secondary sealing barrier, by inflating into flexible sealing air bag, it is expanded and tightly fitted in the flange connecting place of pump shell and end cover. The air seal form has good self-adapting characteristics, even if the flange sealing surface becomes rough due to rust, flexible material can perfectly fit, under the cooperation of first sealing washer and second sealing washer, flexible sealing air bag can be protected and sealed.

Description

Technical Field

[0001] This utility model belongs to the technical field of submersible pumps, specifically relating to a moisture-proof device for submersible pump motor windings. Background Technology

[0002] The stator winding of a small submersible pump motor is usually made of enameled copper wire and is tightly fixed in the pump casing. The pump casing is sealed by installing an end cover on the top of the pump casing to prevent water from entering the pump casing and causing leakage risk.

[0003] During use, the pump casing and end cover are usually sealed by a combination of flanges and sealing rings. However, after a long period of use, the flanges are prone to rust. Rust spots will make the flange sealing surface rough and damage the sealing effect of the sealing ring. This not only leads to a significant decrease in the sealing reliability of the submersible pump, but also makes it difficult to disassemble the end cover. Utility Model Content

[0004] The purpose of this invention is to provide a moisture-proof device for the windings of a submersible pump motor, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A moisture-proof device for a submersible pump motor winding includes a sealing component, comprising a pump housing and a first protective shell. An end cap is bolted to the top of the pump housing, and a lifting ring is fixedly connected to the top of the end cap. A motor cable is fixedly connected inside the end cap. An enclosure assembly is provided outside the pump housing, and a positioning assembly is provided outside the first protective shell. A stabilizing component includes a fixed clamping plate, which is fixedly connected to the outside of the positioning assembly. A clamping assembly is provided outside the fixed clamping plate.

[0006] In a preferred embodiment of this utility model, the surrounding assembly includes a flexible sealing airbag, which is movably connected to the outside of the pump housing. The flexible sealing airbag is in contact with the inner wall of the first protective shell and is movably connected to an end cap. An inflation tube is fixedly connected to the top of the flexible sealing airbag, and the flexible sealing airbag communicates with the inflation tube. An inflation connector is fixedly connected to the end of the inflation tube away from the flexible sealing airbag, and a sealing cap is threaded onto the outside of the inflation connector.

[0007] In a preferred embodiment of this utility model, the positioning component includes a first sealing gasket, which is fixedly connected to the inner side of the first protective shell. A second protective shell is movably connected to the outside of the flexible sealing airbag, and the flexible sealing airbag contacts the inner wall of the second protective shell. A second sealing gasket is fixedly connected to the inner side of the second protective shell. A fastening bolt is threadedly connected to the inside of the first protective shell, and the fastening bolt is threadedly connected to the second protective shell. An L-shaped plate is fixedly connected to the top of the first protective shell, and a fixed clamping plate is fixedly connected to the top of the L-shaped plate. The L-shaped plate is slidably connected to the top of the end cap. A guide block is fixedly connected to the inner side of the L-shaped plate, and a guide groove is fixedly connected to the top of the end cap. A positioning plate is fixedly connected to the top of the second protective shell, and the positioning plate is slidably connected to the inner wall of the L-shaped plate and the top of the end cap.

[0008] As a preferred embodiment of this utility model, a sliding groove is provided inside the guide groove at a position corresponding to the guide block, and the guide block is slidably connected in the sliding groove.

[0009] In a preferred embodiment of this utility model, the clamping assembly includes an extension plate, which is fixedly connected to one side of a fixed clamping plate. An L-shaped column is slidably connected inside the extension plate. The positioning plate contacts the L-shaped column. A movable clamping plate is fixedly connected to one end of the L-shaped column. A limit block is fixedly connected to one end of the movable clamping plate. A trapezoidal block is fixedly connected to the top of the end cap. The L-shaped column contacts the trapezoidal block.

[0010] As a preferred embodiment of this utility model, a through groove is provided inside the fixed clamping plate at the position corresponding to the limiting block, and the limiting block is slidably connected in the through groove.

[0011] As a preferred embodiment of this utility model, a through groove is provided at the top of the L-shaped plate and at the position corresponding to the L-shaped column, and the L-shaped column is slidably connected in the through groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The designed sealing components provide a reliable secondary sealing barrier for the original flange sealing structure of the submersible pump. By inflating the flexible sealing airbag, it expands and tightly fits against the flange connection between the pump casing and the end cover. This air seal has excellent self-adaptive characteristics; even if the flange sealing surface becomes rough due to rust, the flexible material can still fit perfectly. With the cooperation of the first and second sealing gaskets, the flexible sealing airbag can be protected and sealed, further preventing water from entering from the connection between the pump casing and the end cover, thereby preventing moisture from entering the motor windings inside the pump casing.

[0013] 2. With the help of the set stabilizing components and trapezoidal blocks, the L-shaped column is easily guided. When positioning the L-shaped plate, it ensures that the moving clamp is always away from the motor cable, and the fixed clamp is easy to approach the motor cable. The user does not need to manually move the moving clamp. When the positioning plate is in place, the L-shaped column and the moving clamp can be moved to facilitate the clamping of the motor cable. This avoids large-scale shaking of the motor cable caused by water flow impact or external force dragging, effectively protects the sealing joint at the cable outlet, prevents it from loosening and leaking due to long-term swinging, and further eliminates the risk of water vapor intrusion. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the enclosure component of this utility model; Figure 3 This is a schematic diagram of the overall structure of the positioning component of this utility model; Figure 4 This is a schematic diagram of the L-shaped plate in the limiting state of this utility model; Figure 5 This is a schematic diagram of the overall structure of the clamping assembly of this utility model; Figure 6 This is a schematic diagram showing the positional relationship of the trapezoidal blocks of this utility model; Figure 7 This is a schematic diagram showing the positional relationship of the limiting blocks of this utility model.

[0015] In the diagram: 10. Pump casing; 11. First protective casing; 12. End cover; 13. Lifting ring; 14. Motor cable; 15. Enclosure assembly; 151. Flexible sealing airbag; 152. Inflation pipe; 153. Inflation connector; 154. Sealing cover; 16. Positioning assembly; 161. First sealing gasket; 162. Second protective casing; 163. Second sealing gasket; 164. Fastening bolt; 165. L-shaped plate; 166. Guide block; 167. Guide groove; 168. Positioning plate; 20. Fixed clamping plate; 21. Clamping assembly; 211. Extension plate; 212. L-shaped column; 213. Moving clamping plate; 214. Limiting block; 215. Trapezoidal block. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Example 1 Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a moisture-proof device for the motor winding of a submersible pump, including a sealing component, a pump housing 10 and a first protective shell 11. An end cap 12 is fixedly connected to the top of the pump housing 10 by bolts. A lifting ring 13 is fixedly connected to the top of the end cap 12. A motor cable 14 is fixedly connected inside the end cap 12. The end cap 12 and the motor cable 14 are connected by a sealing joint. An enclosure component 15 is provided outside the pump housing 10, and a positioning component 16 is provided outside the first protective shell 11.

[0018] The enclosure component 15 includes a flexible sealing airbag 151, which is made of high-strength TPU or silicone-coated aramid fabric composite material, possessing excellent flexibility, airtightness, and water pressure resistance. The flexible sealing airbag 151 is movably connected to the outside of the pump housing 10, contacts the inner wall of the first protective shell 11, and is movably connected to the end cap 12. An inflation tube 152 is fixedly connected to the top of the flexible sealing airbag 151, and the flexible sealing airbag 151 is connected to the inflation tube 152. Pipe 152 is connected, and an inflation connector 153 is fixedly connected to the end of the inflation pipe 152 away from the flexible sealing airbag 151. A sealing cap 154 ​​is threaded onto the external side of the inflation connector 153. Partial gas is injected into the flexible sealing airbag 151 through the inflation pipe 152 and the inflation connector 153, initially wrapping the flange connection to prevent displacement of the airbag during installation. After the flexible sealing airbag 151 is fully inflated, it expands and tightly fits the flange connection between the pump housing 10 and the end cover 12. This airtight seal has excellent self-adaptive characteristics; even if the flange sealing surface becomes rough due to rust, the flexible material can still fit perfectly.

[0019] Furthermore, the positioning component 16 includes a first sealing gasket 161, which is fixedly connected to the inner side of the first protective shell 11. A second protective shell 162 is movably connected to the outside of the flexible sealing airbag 151, with the flexible sealing airbag 151 contacting the inner wall of the second protective shell 162. A second sealing gasket 163 is fixedly connected to the inner side of the second protective shell 162. Both the first sealing gasket 161 and the second sealing gasket 163 are made of oil-resistant rubber material. A fastening bolt 164 is threadedly connected to the inside of the first protective shell 11, and the fastening bolt 164 is threadedly connected to the second protective shell 162. The top of the first protective shell 11... An L-shaped plate 165 is fixedly connected to the end cap 12. The L-shaped plate 165 is slidably connected to the top of the end cap 12. A guide block 166 is fixedly connected to the inner side of the L-shaped plate 165. A guide groove 167 is fixedly connected to the top of the end cap 12. A positioning plate 168 is fixedly connected to the top of the second protective shell 162. The positioning plate 168 is slidably connected to the inner wall of the L-shaped plate 165 and the top of the end cap 12. By sliding the guide block 166 into the groove opened inside the guide groove 167, the L-shaped plate 165 is precisely positioned, thereby ensuring that the first protective shell 11 accurately covers the outside of the flexible sealing airbag 151. Sliding the positioning plate 168 into the inner wall of the L-shaped plate 165 also precisely positions the second protective shell 162, so that the second protective shell 162 completely covers the flexible sealing airbag 151, facilitating the sealing and protection of the flange connection.

[0020] The guide groove 167 has a sliding groove at the position corresponding to the guide block 166, and the guide block 166 is slidably connected in the sliding groove, which facilitates the positioning of the first protective shell 11 and prevents the first protective shell 11 and the L-shaped plate 165 from moving up and down.

[0021] In use, the uninflated flexible sealing airbag 151 is wrapped around the flange connection between the pump housing 10 and the end cover 12. With the cooperation of the inflation pipe 152 and the inflation connector 153, some gas is injected into the flexible sealing airbag 151 to initially wrap the flange connection and prevent the flexible sealing airbag 151 from falling off. The guide block 166 is slid into the groove opened inside the guide groove 167 to position the L-shaped plate 165, thereby positioning the first protective shell 11. This makes it easy to cover the flexible sealing airbag 151 with the first protective shell 11, preventing the first protective shell 11 from moving up and down. The positioning plate 168 is then slid into the L-shaped... On the inner wall of plate 165, the second protective shell 162 is also positioned so that it wraps around the flexible sealing airbag 151. Before positioning the first protective shell 11 and the second protective shell 162, the rotation angle of the flexible sealing airbag 151 is simply adjusted to ensure that the inflation tube 152 can contact the first sealing gasket 161 and the second sealing gasket 163. After continuing to inflate the flexible sealing airbag 151, it expands and fits tightly against the flange connection between the pump housing 10 and the end cover 12. With the cooperation of the fastening bolts 164, the first protective shell 11 and the second protective shell 162 are limited, thus completing the sealing and protection of the flange connection.

[0022] Example 2 Reference Figures 5-7 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a stabilizing component, which includes a fixed clamping plate 20. The fixed clamping plate 20 is fixedly connected to the top of the L-shaped plate 165, and a clamping assembly 21 is provided on the outside of the fixed clamping plate 20.

[0023] Specifically, the clamping assembly 21 includes an extension plate 211, which is fixedly connected to one side of the fixed clamping plate 20. An L-shaped post 212 is slidably connected inside the extension plate 211. The positioning plate 168 contacts the L-shaped post 212. A movable clamping plate 213 is fixedly connected to one end of the L-shaped post 212. A limit block 214 is fixedly connected to one end of the movable clamping plate 213. A trapezoidal block 215 is fixedly connected to the top of the end cover 12. The L-shaped post 212 contacts the trapezoidal block 215. The inclined surfaces of the L-shaped post 212 and the trapezoidal block 215 contact each other, generating a guiding effect, so that the movable clamping plate 213 moves away from the motor cable 14, ensuring that the fixed clamping plate 20 can smoothly contact the motor cable 14. When positioning the positioning plate 168 later, it is convenient for the movable clamping plate 213 to move towards the motor cable 14, which facilitates the limiting work of the motor cable 14 and effectively protects the sealing joint at the cable outlet, preventing it from loosening and leaking due to long-term swinging.

[0024] Furthermore, a through groove is provided inside the fixed clamping plate 20 at the position corresponding to the limiting block 214, and the limiting block 214 is slidably connected in the through groove to facilitate the smooth movement of the movable clamping plate 213; a through groove is provided on the top of the L-shaped plate 165 at the position corresponding to the L-shaped column 212, and the L-shaped column 212 is slidably connected in the through groove to facilitate the movement of the L-shaped column 212.

[0025] During use, as the L-shaped plate 165 slides on top of the end cover 12, the trapezoidal block 215 on top of the end cover 12 moves into the interior of the L-shaped plate 165. The L-shaped post 212 then contacts the inclined surface of the trapezoidal block 215, guiding the L-shaped post 212 to ensure that the moving clamp 213 moves away from the motor cable 14, and that the fixed clamp 20 can smoothly contact the motor cable 14. This eliminates the need for manual movement of the moving clamp 213 by the user. After the positioning plate 168 completes its positioning, the L-shaped post 212... The L-shaped column 212 is no longer in contact with the trapezoidal block 215. At this time, the L-shaped column 212 is in a loose state. With the movement of the positioning plate 168, the L-shaped column 212 comes into contact with the inclined surface of the positioning plate 168, thereby causing the L-shaped column 212 to move until the L-shaped column 212 comes into contact with the plane of the positioning plate 168, thus limiting the L-shaped column 212. At this time, the moving clamping plate 213 and the fixed clamping plate 20 cooperate to clamp the motor cable 14, making it difficult for the connection between the motor cable 14 and the end cover 12 to shake, thus protecting the sealed joint of the motor cable 14.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A moisture-proof device for submersible pump motor windings, characterized in that: include, The sealing component includes a pump housing (10) and a first protective shell (11). An end cap (12) is fixedly connected to the top of the pump housing (10) by bolts. A lifting ring (13) is fixedly connected to the top of the end cap (12). A motor cable (14) is fixedly connected inside the end cap (12). An enclosure assembly (15) is provided outside the pump housing (10). A positioning assembly (16) is provided outside the first protective shell (11). The stabilizing component includes a fixed clamping plate (20), which is fixedly connected to the outside of the positioning component (16), and a clamping component (21) is provided on the outside of the fixed clamping plate (20).

2. The moisture-proof device for submersible pump motor windings according to claim 1, characterized in that: The enclosure assembly (15) includes a flexible sealing airbag (151), which is movably connected to the outside of the pump housing (10). The flexible sealing airbag (151) is in contact with the inner wall of the first protective shell (11). The flexible sealing airbag (151) is movably connected to the end cap (12). An inflation tube (152) is fixedly connected to the top of the flexible sealing airbag (151). The flexible sealing airbag (151) is connected to the inflation tube (152). An inflation connector (153) is fixedly connected to the end of the inflation tube (152) away from the flexible sealing airbag (151). A sealing cap (154) is threaded onto the outside of the inflation connector (153).

3. A moisture-proof device for submersible pump motor windings according to claim 2, characterized in that: The positioning component (16) includes a first sealing gasket (161), which is fixedly connected to the inner side of the first protective shell (11). A second protective shell (162) is movably connected to the outside of the flexible sealing airbag (151). The flexible sealing airbag (151) contacts the inner wall of the second protective shell (162). A second sealing gasket (163) is fixedly connected to the inner side of the second protective shell (162). A fastening bolt (164) is threaded into the inside of the first protective shell (11), and the fastening bolt (164) is threaded into the second protective shell (162). An L-shaped plate (165) is fixedly connected to the top of the protective shell (11), and the fixed clamping plate (20) is fixedly connected to the top of the L-shaped plate (165). The L-shaped plate (165) is slidably connected to the top of the end cap (12). A guide block (166) is fixedly connected to the inner side of the L-shaped plate (165). A guide groove (167) is fixedly connected to the top of the end cap (12). A positioning plate (168) is fixedly connected to the top of the second protective shell (162). The positioning plate (168) is slidably connected to the inner wall of the L-shaped plate (165). The positioning plate (168) is slidably connected to the top of the end cap (12).

4. A moisture-proof device for submersible pump motor windings according to claim 3, characterized in that: The guide groove (167) has a sliding groove at the position corresponding to the guide block (166), and the guide block (166) is slidably connected in the sliding groove.

5. A moisture-proof device for submersible pump motor windings according to claim 3, characterized in that: The clamping assembly (21) includes an extension plate (211), which is fixedly connected to one side of the fixed clamping plate (20). An L-shaped column (212) is slidably connected inside the extension plate (211). The positioning plate (168) contacts the L-shaped column (212). A movable clamping plate (213) is fixedly connected to one end of the L-shaped column (212). A limit block (214) is fixedly connected to one end of the movable clamping plate (213). A trapezoidal block (215) is fixedly connected to the top of the end cap (12). The L-shaped column (212) contacts the trapezoidal block (215).

6. A moisture-proof device for submersible pump motor windings according to claim 5, characterized in that: The fixed clamping plate (20) has a through groove at the position corresponding to the limiting block (214), and the limiting block (214) is slidably connected in the through groove.

7. A moisture-proof device for submersible pump motor windings according to claim 5, characterized in that: A through groove is provided at the top of the L-shaped plate (165) and at the corresponding position of the L-shaped column (212), and the L-shaped column (212) is slidably connected in the through groove.

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