Submersible pump sealing structure

Abstract

The submersible pump sealing structure comprises a machine shell, a wiring cover and a connecting wire, the wiring cover is fixedly installed at the top of the machine shell, a wiring seat is fixedly arranged at the center of the bottom of the wiring cover, a wiring port is fixedly arranged at the center of the top of the wiring cover, and the wiring port is electrically connected with the wiring seat. A conductive column used for conducting electricity is arranged on the inner side of the wiring port, a plug matched with the wiring port is fixed to the end of the connecting line, and a first conical surface is arranged on the top of the plug; according to the utility model, the connecting line is connected by adopting a plug plugging mode, so that the connecting line is easier to disassemble and convenient to replace, in order to ensure the sealing performance and firmness between the connecting line and the wiring cover, the sealing cover is additionally arranged on the outer side of the plug, and the sealing cover and the wiring cover are sealed and fixed in a threaded connection mode; and the sealing cover and the plug are sealed through the matching of the conical surface II and the conical surface I.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a sealing structure of a submersible pump. Background Art

[0002] Submersible pumps are operated by submerging in the medium, and part of the power cable that supplies power to the submersible motor is submerged in the medium. Submersible pumps are widely used in the fields of domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, fountain landscape, etc.

[0003] In order to ensure the sealing between the connecting line and the pump body, the connecting line of the existing submersible pump is generally fixed on the pump body, and the connecting line is not easy to remove. Therefore, when the connecting line is damaged or the connecting line is not long enough and needs to be replaced, the fixed structure will cause the problem of inconvenient replacement of the connecting line. Utility Model Content

[0004] The utility model aims to provide a submersible pump sealing structure to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a submersible pump sealing structure, comprising a casing, a wiring cover and a connecting wire, the wiring cover is fixedly installed on the top of the casing, a wiring seat is fixedly provided at the bottom center position of the wiring cover, a wiring port is fixedly provided at the top center position of the wiring cover, the wiring port is electrically connected to the wiring seat, a conductive column for conduction is provided on the inner side of the wiring port, a plug matching with the wiring port is fixed at the end of the connecting wire, a conical surface 1 is provided on the top of the plug, a sealing cover connecting seat fixedly connected with the wiring cover is provided on the outer side of the wiring port, a thread is provided on the outer side of the sealing cover connecting seat, a slidable sealing cover is installed on the connecting wire, a conical surface 2 matching with the conical surface 1 is provided on the inner upper part of the sealing cover, and a thread is provided on the inner lower part of the sealing cover matching with the sealing cover connecting seat.

[0006] Preferably, a sealing groove is arranged around the outer side of the wiring port, a rubber sealing ring is fixed in the sealing groove, and the side edge of the plug is matched with the sealing groove.

[0007] Preferably, a groove opened on the wiring cover is provided on each side of the wiring port, and a bayonet is provided on the side of the groove close to the wiring port, and connecting claw mounting seats are symmetrically arranged on both sides of the outer side of the plug, and a connecting claw is installed on the connecting claw mounting seat through a rotating shaft, and a torsion spring for causing the connecting claw to rotate downward is also installed on the rotating shaft, and a hook is provided at the bottom of the connecting claw to cooperate with the bayonet.

[0008] Preferably, the bottom of the sealing cover connecting seat is provided with anti-skid knurling, and the bottom of the sealing cover cooperates with the anti-skid knurling.

[0009] Preferably, a limit block is also fixed on the connecting line.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the connecting wire of the utility model is connected by plugging in, so that the connecting wire is easier to disassemble and thus convenient to replace; in order to ensure the sealing and firmness between the connecting wire and the wiring cover, the utility model adds a sealing cover on the outer side of the plug, the sealing cover is sealed and fixed with the wiring cover by threaded connection, the sealing cover and the plug are sealed by the cooperation of the second cone surface and the first cone surface; during the tightening process of the sealing cover, the second cone surface squeezes the first cone surface, so that the two are in close contact; the sealing cover can be movably installed on the connecting wire, so as not to affect the normal insertion and removal of the plug;

[0011] In order to further improve the sealing between the connecting wire and the wiring cover, a sealing groove is arranged around the outside of the wiring port of the utility model, and a rubber sealing ring is fixed in the sealing groove. When the plug is inserted, the bottom side of the plug will squeeze the rubber sealing ring, thereby forming a sealing effect.

[0012] In order to maintain the sealing effect of the rubber sealing ring, a connecting claw is provided on the outer side of the plug of the utility model, and a bayonet is provided in the groove on the wiring port, and the connecting claw can clamp the bayonet, thereby preventing the plug from being loosened from the wiring port. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall internal structure of the utility model.

[0015] In the figure: 1. housing; 2. wiring cover; 3. sealing cover connecting seat; 4. wiring port; 5. sealing cover; 6. limit block; 7. connecting wire; 8. cone surface one; 9. cone surface two; 10. plug; 11. connecting claw mounting seat; 12. connecting claw; 13. anti-slip knurling; 14. hook; 15. bayonet; 16. sealing groove; 17. rubber sealing ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0017] See also Figure 1 In the embodiment of the utility model, a submersible pump sealing structure includes a casing 1, a wiring cover 2 and a connecting line 7, a limit block 6 is fixed on the connecting line 7, and the limit block 6 is used to limit the movable range of the sealing cover 5 on the connecting line 7, the wiring cover 2 is fixedly installed on the top of the casing 1, a wiring seat is fixedly provided at the bottom center position of the wiring cover 2, a wiring port 4 is fixedly provided at the top center position of the wiring cover 2, the wiring port 4 is electrically connected to the wiring seat, and a conductive column for conduction is provided on the inner side of the wiring port 4, a plug 10 matched with the wiring port 4 is fixed at the end of the connecting line 7, a conical surface 8 is provided on the top of the plug 10, a sealing cover connecting seat 3 fixedly connected to the wiring cover 2 is provided on the outer side of the wiring port 4, and a thread is provided on the outer side of the sealing cover connecting seat 3, a slidable sealing cover 5 is installed on the connecting line 7, a conical surface 9 matched with the conical surface 8 is provided on the inner upper part of the sealing cover 5, and a thread matched with the sealing cover connecting seat 3 is provided on the inner lower part of the sealing cover 5.

[0018] The outside of the wiring port 4 is surrounded by a circle of sealing grooves 16, in which a rubber sealing ring 17 is fixed, and the side of the plug 10 cooperates with the sealing grooves 16; a groove is provided on each side of the wiring port 4 and is opened on the wiring cover 2, and a bayonet 15 is provided on the side of the groove close to the wiring port 4, and connecting claw mounting seats 11 are symmetrically arranged on both sides of the outside of the plug 10, and connecting claws 12 are installed on the connecting claw mounting seats 11 through a rotating shaft, and a torsion spring for causing the connecting claw 12 to rotate downward is also installed on the rotating shaft, and a hook 14 cooperating with the bayonet 15 is provided at the bottom of the connecting claw 12.

[0019] The bottom of the sealing cover connecting seat 3 is provided with anti-skid knurling 13, and the bottom of the sealing cover 5 cooperates with the anti-skid knurling 13. The anti-skid knurling 13 is used to increase the friction between the sealing cover 5 and the sealing cover connecting seat 3, so that the sealing cover 5 is not easy to loosen.

[0020] The working principle of the utility model is as follows: the connecting wire 7 of the utility model is connected by plugging the plug 10, so that the connecting wire 7 is easier to disassemble and thus convenient to replace. In order to ensure the sealing and firmness between the connecting wire 7 and the wiring cover 2, the utility model is provided with a sealing cover 5 on the outer side of the plug 10. The sealing cover 5 is sealed and fixed with the wiring cover 2 by threaded connection. The sealing cover 5 and the plug 10 are sealed by the cooperation of the second conical surface 9 and the first conical surface 8. During the tightening process of the sealing cover 5, the second conical surface 9 squeezes the first conical surface 8, so that the two are in close contact. The sealing cover 5 can be movably installed on the connecting wire 7, so as not to affect the normal insertion and removal of the plug 10.

[0021] In order to further improve the sealing between the connecting wire 7 and the wiring cover 2, the outer side of the wiring port 4 of the utility model is surrounded by a circle of sealing grooves 16, and a rubber sealing ring 17 is fixed in the sealing groove 16. When the plug 10 is inserted, the bottom side of the plug 10 will squeeze the rubber sealing ring 17, thereby forming a sealing effect;

[0022] In order to maintain the sealing effect of the rubber sealing ring 17, a connecting claw 12 is provided on the outer side of the plug 10 of the utility model, and a bayonet 15 is provided in the groove on the wiring port 4. The connecting claw 12 can clamp the bayonet 15 to prevent the plug 10 from loosening from the wiring port 4.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A submersible pump sealing structure, comprising a housing (1), a wiring cover (2) and a connecting wire (7), wherein the wiring cover (2) is fixedly mounted on the top of the housing (1), and a wiring seat is fixedly arranged at the center of the bottom of the wiring cover (2), characterized in that: A wiring port (4) is fixedly provided at the center position of the top of the wiring cover (2), the wiring port (4) is electrically connected to the wiring seat, a conductive column for conducting electricity is provided on the inner side of the wiring port (4), a plug (10) matching with the wiring port (4) is fixedly provided at the end of the connecting wire (7), a conical surface 1 (8) is provided on the top of the plug (10), a sealing cover connecting seat (3) fixedly connected to the wiring cover (2) is provided on the outer side of the wiring port (4), the outer side surface of the sealing cover connecting seat (3) is provided with a thread, a slidable sealing cover (5) is installed on the connecting wire (7), a conical surface 2 (9) matching with the conical surface 1 (8) is provided on the inner upper part of the sealing cover (5), and a thread matching with the sealing cover connecting seat (3) is provided on the inner lower part of the sealing cover (5).

2. A submersible pump sealing structure according to claim 1, characterized in that: The outer side of the wiring port (4) is surrounded by a sealing groove (16), a rubber sealing ring (17) is fixed in the sealing groove (16), and the side edge of the plug (10) cooperates with the sealing groove (16).

3. A submersible pump sealing structure according to claim 2, characterized in that: A groove is provided on each side of the wiring port (4) and is opened on the wiring cover (2). A bayonet (15) is provided on the side of the groove close to the wiring port (4). Connecting claw mounting seats (11) are symmetrically provided on both sides of the outer side of the plug (10). A connecting claw (12) is mounted on the connecting claw mounting seat (11) via a rotating shaft. A torsion spring is also mounted on the rotating shaft for causing the connecting claw (12) to rotate downward. A hook (14) is provided at the bottom of the connecting claw (12) and is matched with the bayonet (15).

4. A submersible pump sealing structure according to claim 1, characterized in that: The bottom of the sealing cover connecting seat (3) is provided with anti-skid knurling (13), and the bottom of the sealing cover (5) cooperates with the anti-skid knurling (13).

5. A submersible pump sealing structure according to claim 1, characterized in that: A limit block (6) is also fixed on the connecting line (7).

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