Novel submersible electric pump sealing structure

Abstract

The utility model discloses a novel submersible electric pump sealing structure which comprises a cable plug sheath, a machine barrel upper cover and a water outlet section, the lower portion of the cable plug sheath is provided with a three-section step type step face, and after the cable plug sheath is locked on the machine barrel upper cover, the machine barrel upper cover is connected with the water outlet section. The lower surface of the three-section step type step face is sequentially and correspondingly pressed with the machine barrel upper cover and the water outlet section to form a first sealing face, a second sealing face and a third sealing face, a wire frame is installed in a wire penetrating channel in the cable plug sheath, and a plurality of wire penetrating holes are correspondingly formed in the wire frame and used for correspondingly connecting multiple strands of cable core wires in a cable plug in a penetrating mode. And each threading hole is connected with a strand of cable core wire in a penetrating manner. According to the utility model, three-section sealing is adopted, extrusion sealing surfaces of the rubber sheath, the water outlet section and the upper cover of the machine barrel are increased, gaps are reduced, and a better sealing effect can be achieved; the wire holder is placed in the rubber sheath, and the core wire is fixed in the wire holder, so that the twisting condition of the core wire in the sheath can be reduced, gaps are reduced, and motor oil is not easy to leak.

Description

Technical Field

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

[0002] In the existing submersible electric pump sealing structure, when the cable plug is sealed and connected, it is usually installed on the upper cover of the pump barrel through the cable plug sheath.

[0003] like Figure 1 As shown, the existing sealing structure of the submersible electric pump includes a cable plug sheath 1, a barrel cover 2 and a water outlet joint 3. The seal between the cable plug sheath and the pump body is only tightened by the locking nut. The middle step surface of the cable plug sheath squeezes a section of the barrel cover to seal, and the sealing effect is not ideal, which easily causes water leakage.

[0004] Moreover, the cables are connected through the cable plug sheath. There are gaps between the core wires of the multi-strand cable and between the core wires and the sheath, which will cause the motor oil to leak out along the core wire and affect the performance of the cable. Utility Model Content

[0005] In order to solve the above technical problems, the utility model designs a novel sealing structure of a submersible electric pump.

[0006] The utility model adopts the following technical solutions:

[0007] A new type of submersible electric pump sealing structure includes a cable plug sheath, a barrel cover and a water outlet joint. The lower part of the cable plug sheath is provided with three stepped stepped surfaces. After the cable plug sheath is locked on the barrel cover, the lower surfaces of the three stepped stepped surfaces are pressed against the barrel cover and the water outlet joint in sequence to form a first sealing surface, a second sealing surface and a third sealing surface. A wire rack is installed in the internal threading channel of the cable plug sheath. The wire rack is correspondingly provided with multiple threading holes for correspondingly threading multiple cable core wires in the cable plug. Each threading hole is used to thread a cable core wire.

[0008] Preferably, the plurality of threading holes are evenly arranged on the wire rack along the circumference.

[0009] Preferably, the wire rack is installed with an interference fit with the wire threading channel.

[0010] Preferably, the threading hole is interference fit with each cable core wire to be threaded therethrough.

[0011] Preferably, the wire rack adopts a rubber sleeve.

[0012] Preferably, the cable plug sheath is a rubber sheath.

[0013] The utility model discloses a beneficial effect is: (1), the utility model discloses three -stage type sealing, increase rubber sheath and the extrusion sealing surface of water outlet section and machine cylinder upper cover, reduce the gap, can better play the sealing effect, (2), place the wire holder in the rubber sheath, fix the core wire in the wire holder, can reduce the torsion condition of core wire in the sheath, reduce the gap, further strengthen the adhesion of core wire and sheath, remove the clearance between core wire, make the motor inside and the outside separate, and motor oil is not easy to exude. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the prior art cable plug sheath structure;

[0015] Figure 2 It is a structure schematic view of the utility model;

[0016] Figure 3 It is a structure schematic view of the wire holder in the utility model;

[0017] Figure 4 It is Figure 3 A-A direction sectional view;

[0018] In the drawing: 1, cable plug sheath, 2, machine cylinder upper cover, 3, water outlet section, 4, first sealing surface, 5, second sealing surface, 6, third sealing surface, 7, wire holder, 8, threading hole. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further specifically described in the following through specific embodiments and in conjunction with the drawings:

[0020] Embodiment: as Figure 2 Shown, a new type submersible electric pump sealing structure includes cable plug sheath 1, machine cylinder upper cover 2 and water outlet section 3, the cable plug sheath lower part is provided with three-stage stepped ladder face, after cable plug sheath locking on machine cylinder upper cover, the lower surface of three-stage stepped ladder face is successively compressed with machine cylinder upper cover and water outlet section corresponding and forms first sealing surface 4, second sealing surface 5 and third sealing surface 6, and wire holder 7 is installed in the threading channel inside cable plug sheath.

[0021] As Figure 3 And Figure 4 Shown, wire holder is correspondingly provided with three threading holes 8, is used for corresponding three cable core wires in cable plug and is connected, and each threading hole is connected with one cable core wire.

[0022] Three threading holes are evenly arranged on wire holder along circumference.Wire holder is installed in interference fit with threading channel.Each cable core wire that threading hole is connected with is connected in interference fit.Wire holder adopts rubber sleeve.Cable plug sheath is rubber sheath.

[0023] The utility model discloses a three -section type sealing, increase rubber sheath and the extrusion sealing surface of water outlet section and machine cylinder upper cover, reduce the gap, can better play the sealing effect, place the wire holder in the rubber sheath, can reduce the torsion condition of core wire in the sheath, reduce the gap, further strengthen the adhesion of core wire and sheath, remove the clearance between core wire, make the motor inside and outside separate, and motor oil is not easy to exude.

[0024] The above-mentioned embodiment is only a preferred scheme of the utility model, and does not limit the utility model in any form, and other variants and modifications can be made without exceeding the technical scheme recorded in the claims.

Claims

1. A new type of submersible electric pump sealing structure, comprising a cable plug sheath (1), a barrel upper cover (2) and a water outlet section (3), characterized in that: The lower part of the cable plug sheath (1) is provided with three stepped stepped surfaces. After the cable plug sheath (1) is locked on the barrel cover (2), the lower surfaces of the three stepped stepped surfaces are pressed against the barrel cover (2) and the water outlet joint (3) in sequence to form a first sealing surface (4), a second sealing surface (5) and a third sealing surface (6). A wire rack (7) is installed in the internal threading channel of the cable plug sheath (1). The wire rack (7) is provided with a plurality of threading holes (8) for correspondingly threading the corresponding multiple cable core wires in the cable plug. Each threading hole (8) is threaded with a cable core wire.

2. A new submersible electric pump sealing structure according to claim 1, characterized in that: The plurality of threading holes (8) are evenly arranged on the wire rack (7) along the circumference.

3. A new submersible electric pump sealing structure according to claim 1, characterized in that: The wire rack (7) is installed in an interference fit with the threading channel.

4. A new submersible electric pump sealing structure according to claim 1, characterized in that: The threading hole (8) is interference-fitted with each cable core wire that is threaded therethrough.

5. A new submersible electric pump sealing structure according to claim 1, characterized in that: The wire rack (7) adopts a rubber sleeve.

6. A new submersible electric pump sealing structure according to claim 1, characterized in that: The cable plug sheath (1) is a rubber sheath.

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