CN213711404U

CN213711404U - Cable joint for submersible pump

Info

Publication number: CN213711404U
Application number: CN202022300933.6U
Authority: CN
Inventors: 黄开涛
Original assignee: Taizhou Zunhualong Pump Co ltd
Current assignee: Taizhou Zunhualong Pump Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-16
Anticipated expiration: 2030-10-15

Abstract

The utility model discloses a cable joint for immersible pump relates to spare part technical field for the water pump, and its technical scheme main points are: the immersible pump includes the pump body, motor and upper cover, the motor is fixed in the pump body, the upper cover sets up in pump body upper end, the upper cover has the connecting hole, the pore wall of connecting hole has the sealing, cable joint can dismantle to be connected in the connecting hole, cable joint's outer wall is provided with keeps off the shoulder, the outer wall of cable joint upper end slides and is provided with and compresses tightly the piece, it can dismantle and connect in the connecting hole to compress tightly the piece, and compress tightly the piece and can compress tightly in sealing cable joint sets up in the connecting hole, and the compressing tightly piece that slides the setting on the cable joint will keep off the shoulder and compress tightly on the sealing, make and keep off the shoulder and seal up the connecting hole, and simultaneously, it is spacing to keep off the shoulder and be compressed tightly, it then is fixed in the connecting hole to compress tightly.

Description

Cable joint for submersible pump

Technical Field

The utility model relates to a spare part technical field for the water pump, in particular to cable joint for immersible pump.

Background

The submersible pump is a water pump in which an impeller and a motor for driving the impeller are submerged to work, and is roughly divided into a deep well and a working surface.

Because the working environment of the submersible pump is in water and the motor needs to be connected to an external power supply through a cable (lead), the external power supply can supply power to the motor, so that the motor drives the impeller to normally work; the motor is arranged inside the submersible pump in a sealing mode, so that a connecting hole through which a cable can penetrate needs to be formed in the pump body, and a gap between the cable and the connecting hole is sealed through a cable connector, so that the sealing performance of the submersible pump is guaranteed. However, the cable joint in the prior art is easy to loosen, so that the sealing performance of the cable joint is poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a cable joint for immersible pump, it has difficult not hard up, the better advantage of sealing performance.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a cable joint for immersible pump, the immersible pump includes the pump body, motor and upper cover, the motor is fixed in the pump body, the upper cover set up in pump body upper end, the upper cover has the connecting hole, the pore wall of connecting hole has the sealing, cable joint can dismantle connect in the connecting hole, cable joint's outer wall is provided with and keeps off the shoulder, the outer wall of cable joint upper end slides and is provided with and compresses tightly the piece, compress tightly the piece can dismantle connect in the connecting hole, just compress tightly the piece can with keep off the shoulder compress tightly in the sealing.

Through the technical scheme, the motor is fixed in the pump body, the output shaft of the motor is connected with the impeller, the cable is fixed in the connecting hole through the cable joint, one end of the cable is connected with an external power supply, and the other end of the cable is connected with the motor in the pump body, so that the external power supply can supply power to the motor, and the motor can drive the impeller to normally work; because cable joint sets up in the connecting hole, and the compressing tightly piece that slides on the cable joint and set up will keep off the shoulder and compress tightly on the sealing for keep off the shoulder and seal up the connecting hole, simultaneously, keep off the shoulder and compressed tightly the piece spacing, compress tightly the piece then and be fixed in the connecting hole, accomplish the fixed to cable joint, thereby realize that this cable joint is difficult not hard up, and the better purpose of sealing performance.

Preferably, the cable connector is made of deformable rubber, and the retaining shoulder is matched with the sealing part.

Through above-mentioned technical scheme, cable joint chooses for use the rubber material, keeps off promptly that the shoulder can deform, will keep off the shoulder compressing tightly in the sealing, keeps off the shoulder then produces deformation thereupon to realize keeping off the sealing of shoulder and sealing, the shoulder that keeps off after the connecting hole is deformed promptly blocks up.

Preferably, the pressing piece is connected in the connecting hole in a threaded manner, and the lower end of the pressing piece can be abutted against the upper end face of the retaining shoulder.

Through the technical scheme, the pressing piece is in threaded connection with the connecting hole, and the lower end of the pressing piece gradually abuts against the upper end face of the retaining shoulder, so that the purpose of deformation of the retaining shoulder is achieved.

Preferably, the sealing portion includes a first sealing surface and a second sealing surface, the lower end surface of the shoulder is in contact with the first sealing surface, and the side surface of the shoulder is in contact with the two surfaces of the sealing surface.

Through the technical scheme, the upper end face of the blocking shoulder is pressed by the pressing piece, so that the lower end face of the blocking shoulder is tightly abutted to the first sealing face, the side wall of the blocking shoulder is tightly abutted to the second sealing face, and the connecting hole is effectively sealed.

Preferably, a gasket is arranged between the pressing piece and the blocking shoulder.

Through above-mentioned technical scheme, compress tightly the piece and support tightly through the gasket with the up end that keeps off the shoulder, can effectively reduce and compress tightly the wearing and tearing of piece to keeping off the shoulder.

Preferably, the gasket is made of metal.

Through above-mentioned technical scheme, metal material's packing ring is difficult to produce deformation, and pressing down a threaded connection to the in-process of connecting hole, the packing ring also is difficult to produce wearing and tearing with pressing down a piece, has improved this cable joint's life.

Preferably, the sealing surface is inclined toward the central axis of the connecting hole, the upper end surface and the lower end surface of the retaining shoulder are inclined toward the same direction as the sealing surface, and the lower end surface of the gasket is inclined toward the same direction as the upper end surface of the retaining shoulder.

Through the technical scheme, the first sealing surface, the upper end surface and the lower end surface of the blocking shoulder and the lower end surface of the gasket are all obliquely arranged in the same direction, when the gasket is pressed down by the pressing piece, the lower end surface of the gasket pushes the upper end surface of the blocking shoulder to press down, so that the lower end surface of the blocking shoulder is tightly abutted against the first sealing surface, the side surface of the blocking shoulder is forced to deform, the side surface of the blocking shoulder is completely abutted against the second sealing surface, and the sealing effect of the first sealing surface and the second sealing surface by the blocking shoulder is further improved.

Preferably, a reinforcing block is arranged inside the upper cover, and the reinforcing block is penetrated through by the connecting hole; the lower end of the cable joint is provided with a limiting bulge, and the upper end face of the limiting bulge can be tightly abutted to the lower end face of the reinforcing block.

Through the technical scheme, the connecting hole is formed in the upper cover, so that the reinforcing block at the inner end of the upper cover is beneficial to increasing the structural strength of the upper cover; meanwhile, after the lower end of the cable connector extends into the connecting hole, the upper end face of the limiting bulge abuts against the lower end face of the reinforcing block, so that the possibility that the lower end of the cable connector is separated from the connecting hole is avoided.

Preferably, the side wall of the limiting protrusion is provided with a guide inclined plane.

Through above-mentioned technical scheme, the setting of direction inclined plane is convenient for insert the connecting hole with cable joint.

Preferably, the upper end of the pressing piece is provided with a flange, and a sealing ring is arranged between the flange and the connecting hole.

Through above-mentioned technical scheme, the sealing washer can effectively be sealed the clearance between connecting hole and the flange, has further improved cable joint's leakproofness.

Drawings

FIG. 1 is a schematic structural view of a pump body in an embodiment;

FIG. 2 is a schematic partial cross-sectional view of the pump body in an embodiment;

FIG. 3 is a schematic structural diagram of an upper cover and a cable connector in an embodiment;

FIG. 4 is a schematic view of the full cross-section of FIG. 3;

FIG. 5 is a schematic structural diagram of the embodiment after installation.

Reference numerals: 100. a pump body; 200. a motor; 300. an upper cover; 310. connecting holes; 320. a sealing part; 321. a first sealing surface; 322. a second sealing surface; 330. a reinforcing block; 400. a cable joint; 410. a shoulder block; 420. a limiting bulge; 421. a guide slope; 500. a compression member; 510. a flange; 520. a seal ring; 600. a gasket.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a cable joint for immersible pump, as shown in fig. 1-5, the immersible pump includes the pump body 100, motor 200, upper cover 300 and cable joint 400, motor 200 passes through hot jacket technology or welded fastening in the pump body 100, upper cover 300 bolted connection is in pump body 100 upper end, upper cover 300 has connecting hole 310, the pore wall of connecting hole 310 has sealing 320, cable joint 400 can dismantle through the grafting and connect in connecting hole 310, and the one end and the external power source of cable are connected, the other end and the motor 200 of cable are connected, cable joint 400's outer wall integrated into one piece has fender shoulder 410, the outer wall of cable joint 400 outer end slides and is provided with compresses tightly piece 500, it can dismantle and connect in connecting hole 310 to compress tightly piece 500, and the lower extreme that compresses tightly piece 500 can compress tightly fender shoulder 410 on sealing 320.

Preferably, the cable connector 400 is made of deformable rubber, and the shoulder 410 is adapted to the sealing portion 320.

The lower end of the pressing piece 500 is connected into the connecting hole 310 through a clamping thread, a flange 510 is integrally formed at the upper end of the pressing piece 500, a sealing ring 520 is arranged between the flange 510 and the connecting hole 310, and the lower end of the pressing piece 500 can be abutted against the upper end face of the retaining shoulder 410.

The sealing portion 320 comprises a first sealing surface 321 and a second sealing surface 322, the lower end surface of the blocking shoulder 410 is in contact with the first sealing surface 321, and the side surface of the blocking shoulder 410 is in surface contact with the second sealing surface 322.

Preferably, a gasket 600 is arranged between the pressing piece 500 and the retaining shoulder 410, and the gasket 600 is made of a metal material; the lower end of the pressing member 500 abuts against the upper end surface of the shoulder 410 through the gasket 600.

As shown in fig. 4 to 5, the first sealing surface 321 is inclined toward the central axis of the connecting hole 310, the upper end surface and the lower end surface of the first blocking shoulder 410 are inclined in the same direction as the first sealing surface 321, and the lower end surface of the gasket 600 is inclined in the same direction as the upper end surface of the first blocking shoulder 410.

A reinforcing block 330 is integrally formed inside the upper cover 300, and the reinforcing block 330 is penetrated through the connection hole 310; the lower extreme of cable joint 400 is provided with spacing arch 420, and spacing arch 420 can pass connecting hole 310, and the up end of spacing arch 420 can support tightly in the lower terminal surface of boss 330, and the lateral wall of spacing arch 420 is provided with the direction inclined plane 421 that can slide in connecting hole 310.

The working principle of the cable joint for the submersible pump is as follows:

the motor 200 is fixed in the pump body 100, an output shaft of the motor 200 is connected with the impeller, the cable is fixed in the connecting hole 310 through the cable connector 400, one end of the cable is connected with an external power supply, the other end of the cable is connected with the motor 200 in the pump body 100, so that the external power supply can supply power to the motor 200, and the motor 200 can drive the impeller to normally work.

Because the cable connector 400 is inserted into the connecting hole 310, the guide inclined plane 421 on the limiting protrusion 420 slides on the hole wall of the connecting hole 310, and after the limiting protrusion 420 passes through the connecting hole 310, the upper end surface of the limiting protrusion 420 abuts against the lower end surface of the reinforcing block 330; meanwhile, the lower end face of the blocking shoulder 410 abuts against the first sealing face 321, the pressing piece 500 is sleeved at the upper end of the cable connector 400, the pressing piece 500 slides towards the direction of the blocking shoulder 410 and is connected in the connecting hole 310 in a threaded manner, so that the lower end of the pressing piece 500 abuts against the upper end face of the gasket 600 and downwardly extrudes the gasket 600, the blocking shoulder 410 is deformed, the lower end face of the blocking shoulder 410 abuts against the first sealing face 321, and the side face of the blocking shoulder 410 abuts against the second sealing face 322; in addition, the flange 510 at the upper end of the pressing member 500 presses the sealing ring 520 into the connection hole 310, so that the gap between the flange 510 and the connection hole 310 can be effectively sealed.

When the pressing piece 500 presses the retaining shoulder 410 into the connecting hole 310, axial limiting of the cable connector 400 is also completed, namely, the pressing piece 500 ensures the sealing performance of the cable connector 400, and meanwhile, the pressing piece 500 is matched with the limiting protrusion 420 to limit the cable connector 400, so that the cable connector 400 is ensured to be not easy to loosen.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a cable joint for immersible pump which characterized in that: the immersible pump includes the pump body (100), motor (200) and upper cover (300), motor (200) are fixed in the pump body (100), upper cover (300) set up in the pump body (100) upper end, upper cover (300) have connecting hole (310), the pore wall of connecting hole (310) has sealing (320), cable joint (400) can dismantle connect in connecting hole (310), the outer wall of cable joint (400) is provided with keeps off shoulder (410), the outer wall of cable joint (400) upper end slides and is provided with compresses tightly piece (500), compress tightly piece (500) can dismantle connect in connecting hole (310), just compress tightly piece (500) can with keep off shoulder (410) compress tightly in sealing (320).

2. The submersible pump cable joint according to claim 1, wherein: the cable connector (400) is made of deformable rubber, and the retaining shoulder (410) is matched with the sealing part (320).

3. A cable joint for a submersible pump according to claim 2, characterized in that: the pressing piece (500) is in threaded connection with the connecting hole (310), and the lower end of the pressing piece (500) can be abutted against the upper end face of the retaining shoulder (410).

4. A cable joint for a submersible pump according to claim 3, characterized in that: the sealing part (320) comprises a first sealing surface (321) and a second sealing surface (322), the lower end surface of the baffle shoulder (410) is in contact with the first sealing surface (321), and the side surface of the baffle shoulder (410) is in surface contact with the second sealing surface (322).

5. The submersible pump cable joint according to claim 4, wherein: and a gasket (600) is arranged between the pressing piece (500) and the retaining shoulder (410).

6. The submersible pump cable joint according to claim 5, wherein: the gasket (600) is made of metal.

7. The submersible pump cable joint according to claim 5, wherein: the first sealing surface (321) is obliquely arranged towards the direction of the central axis of the connecting hole (310), the upper end surface and the lower end surface of the retaining shoulder (410) are oblique in the same direction as the first sealing surface (321), and the lower end surface of the gasket (600) is oblique in the same direction as the upper end surface of the retaining shoulder (410).

8. The submersible pump cable joint according to claim 5, wherein: a reinforcing block (330) is arranged inside the upper cover (300), and the reinforcing block (330) is penetrated through by the connecting hole (310); the lower end of the cable joint (400) is provided with a limiting bulge (420), and the upper end face of the limiting bulge (420) can be tightly abutted to the lower end face of the reinforcing block (330).

9. The submersible pump cable joint according to claim 8, wherein: the side wall of the limiting protrusion (420) is provided with a guide inclined plane (421).

10. A cable joint for a submersible pump according to claim 2, characterized in that: the upper end of the pressing piece (500) is provided with a flange (510), and a sealing ring (520) is arranged between the flange (510) and the connecting hole (310).