CN220037022U

CN220037022U - Cable sealing connection structure of water pump

Info

Publication number: CN220037022U
Application number: CN202321489000.3U
Authority: CN
Inventors: 颜正辉
Original assignee: Zhejiang Zhonghu Pump Industry Co ltd
Current assignee: Zhejiang Zhonghu Pump Industry Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-11-17
Anticipated expiration: 2033-06-12

Abstract

The utility model provides a cable conductor seal connection structure of water pump, includes casing, connecting seat, gland nut and cable connector, has seted up the mounting hole on the casing, and the connecting seat is located on the mounting hole, and cable connector wears to locate in the connecting seat and is fixed in on the connecting seat through gland nut. Through setting up the cavity in the connecting seat to through setting up the bottom plate in the opening part of this cavity, make simultaneously exposing in the equal local internal placement cavity of many electric wires of cable conductor joint tip, pour into the sizing material through the injecting glue hole into the cavity and make the electric wire can be by the sizing material parcel after solidifying and realize sealedly, when encountering the surface damage of cable conductor, water enters into the cable conductor inside and along the inner wall of cable conductor through this damaged department, can be located in the cavity and tightly wrap up the sizing material of electric wire and block outside, thereby effectively avoided outside water to flow into the water pump inside along the cable conductor and lead to the circuit in the water pump to take place the short circuit and damage. The sealing structure also has the characteristics of simple structure, convenient operation and the like.

Description

Cable sealing connection structure of water pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a cable sealing connection structure of a water pump.

Background

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy or other external energy of prime mover to liquid to increase energy of liquid, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion, suspension emulsion and liquid metal, etc. and can also be used for conveying liquid, gas mixture and liquid containing suspended solid matter. The required electric energy of water pump can be usually from the outer circuit that inserts the water pump inside of water pump shell through the cable, in order to prevent that the water from getting into the water pump, can all set up seal structure between cable and the water pump shell generally.

For example, chinese patent application No. 201420377273.3 (grant publication No. CN 204025139U) discloses a sealing device for a submersible pump cable, which comprises a compression nut, a cable molding plug, a cable connector and a housing, wherein a mounting hole is formed on the housing, the cable molding plug is disposed in the mounting hole, the bottom end of the compression nut abuts against the upper portion of the cable molding plug, the cable connector is disposed on the lower side of the cable molding plug, a groove is formed in the circumferential direction of the outer wall of the cable connector, a sealing body is disposed in the groove, the sealing body forms a first seal with the housing, and the cable molding plug forms a second seal with the housing.

Because this kind of structure only sets up the seal in the recess that forms on cable conductor joint outer wall circumferencial direction, the inside of cable conductor joint does not set up special seal structure, after the surface of cable conductor is damaged, water will enter into the cable conductor inside from the damage of cable conductor to in the inner wall along the cable conductor gets into the water pump, lead to the defect of circuit short circuit in the water pump.

Therefore, a problem to be solved by those skilled in the art is needed to provide a cable sealing structure which has a simple and compact structure and can prevent the external water leakage from entering the water pump along the cable after the cable is damaged.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a cable sealing connection structure of a water pump, which is simple and compact in structure and can prevent external water leakage from entering the water pump along a cable after the cable is damaged.

The technical scheme adopted for solving the technical problems is as follows: the cable sealing connection structure of the water pump comprises a shell, a connecting seat, a compression nut and a cable connector, wherein a mounting hole is formed in the shell, the connecting seat is arranged on the mounting hole, the cable connector penetrates through the connecting seat and is fixed on the connecting seat through the compression nut, a cavity is formed in the connecting seat and provided with an opening, a bottom plate is additionally arranged at the opening of the cavity, a plurality of wires exposed out of the end part of the cable connector are at least partially arranged in the cavity and can penetrate through the bottom plate to enter the shell, and a glue injection hole is further formed in the bottom plate, so that the wires arranged in the cavity can be wrapped by solidified glue to realize sealing through the glue injection hole.

In order to better fix the sizing material entering the cavity and effectively prevent the sizing material after solidification from moving up and down, preferably, the inner side wall of the cavity is formed with a step surface which can limit the sizing material in the cavity after solidification.

In order to better wrap each wire, the outer surface of the wire which is placed in the cavity is preferably at least partially removed so that the inner metal wire is exposed in the cavity, and the sizing material can wrap the outer surface of the metal wire after solidification.

In order to enable the base plate to be mounted on the connecting seat more conveniently, preferably, a mounting groove for the base plate to be embedded and mounted is formed in the opening of the cavity of the shell.

In order to facilitate connection between the connection seat and the housing, preferably, the connection seat includes a connection portion exposed to the housing and a mounting portion inserted into the mounting hole of the housing and connected to the housing by a fastener.

In order to enable the shell to form effective sealing between the connecting seats, preferably, a double sealing device for preventing water leakage is further arranged between the shell and the connecting seats, the double sealing device comprises a first sealing element and a second sealing element, the first sealing element is arranged between the outer peripheral wall of the mounting part and the inner wall of the mounting hole, and the second sealing element is arranged at the joint of the outer surface of the shell and the connecting part in contact.

In order to conveniently pour the sizing material into the cavity, preferably, the glue injection hole is formed in the middle of the bottom plate, a plurality of threading holes which are distributed along the circumferential direction and are arranged at intervals and used for a wire harness to pass through are further formed in the bottom plate, and the threading holes are all arranged in the glue injection hole in a surrounding mode.

In order to enhance the waterproof performance of each wire, each wire in the shell can independently prevent water flow from leaking downwards along the metal wire inside the wire, preferably, the surface of each wire penetrating downwards into the shell is partially removed to expose the metal wire of the wire outside, and a waterproof heat-shrinkable sleeve is sleeved at the exposed metal wire.

In order to enhance the waterproof performance of each electric wire, each electric wire arranged in the cable connector can also independently prevent water flow from leaking downwards along the metal wire inside the electric wire, preferably, the surface of each electric wire arranged in the cable connector is partially removed to expose the metal wire of the electric wire outside, and a waterproof heat-shrinkable sleeve is sleeved at the exposed metal wire.

Compared with the prior art, the utility model has the advantages that: through setting up the cavity in the connecting seat to through setting up the bottom plate that has the injecting glue hole in the opening part of this cavity, make simultaneously exposing in the many electric wires of cable conductor joint tip all at least local embeds the cavity, pour into the sizing material through the injecting glue hole towards the cavity and make the electric wire of arranging the cavity in can be realized sealedly by the sizing material parcel after solidifying, the injecting glue hole in bottom plate middle part can be made great, make convenient quick injecting glue, and when encountering the surface damage of cable conductor, water enters into the cable conductor inside through this damage and when entering along the inner wall of cable conductor, can be located in the cavity and tightly wrap up the sizing material of electric wire and block outside, thereby effectively avoided outside water to flow into the water pump inside along the cable conductor, finally lead to the circuit in the water pump to take place the short circuit and damage. Meanwhile, the sealing structure has the characteristics of simple structure, low cost, convenient operation and the like.

Drawings

FIG. 1 is a perspective view of the structure of embodiment 1 of the present utility model;

FIG. 2 is a perspective view of another angle of embodiment 1 of the present utility model;

FIG. 3 is a schematic cross-sectional view of example 1 of the present utility model;

FIG. 4 is a schematic view showing an exploded structure of embodiment 1 of the present utility model;

FIG. 5 is a schematic cross-sectional view of example 2 of the present utility model;

fig. 6 is a schematic cross-sectional view of embodiment 3 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Fig. 1 to 4 are schematic diagrams of embodiment 1, and the cable sealing connection structure of the water pump in this embodiment includes a housing 1, a connection seat 2, a compression nut 3, a cable connector 4, a bottom plate 5, a glue 6, and a double sealing device 7.

Referring to fig. 1 to 3, a mounting hole 1a is formed in a housing 1, a connecting seat 2 is arranged on the mounting hole 1a, a cable connector 4 is arranged in the connecting seat 2 in a penetrating manner and is fixed on the connecting seat 2 through a compression nut 3, and the cable connector is characterized in that: the connecting seat 2 is internally provided with a cavity 2a with an opening, a bottom plate 5 is additionally arranged at the opening of the cavity 2a, a plurality of wires 4a exposed out of the end part of the cable connector 4 are at least partially arranged in the cavity 2a and can enter the shell 1 through the bottom plate 5, the bottom plate 5 is also provided with a glue injection hole 5a, glue 6 is injected into the cavity 2a through the glue injection hole 5a, so that the wires 4a arranged in the cavity 2a can be wrapped by the solidified glue 6 to realize sealing, and the direction shown by an arrow A in fig. 3 is the direction of the glue 6.

Referring to fig. 3, in order to better fix the glue material entering the cavity 2a and effectively prevent the solidified glue material 6 from moving up and down, in embodiment 1, a step surface 2b is purposely formed on the inner side wall of the cavity 2a to limit the glue material 6 in the cavity 2a after solidification. Meanwhile, in order to better wrap each wire 4a, the outer surface of the wire 4a arranged in the cavity 2a is removed at least partially, so that the inner metal wire 4a1 can be exposed in the cavity 2a, after the glue 6 is poured into the cavity 2, the glue 6 wraps the outer surface of the metal wire 4a1 after solidification, and the sealing performance of each wire 4a can be further enhanced.

Referring to fig. 2 and 4, in embodiment 1, in order to enable the base plate 5 to be mounted on the connecting base 2 more conveniently, a mounting groove 2c for the base plate 5 to be mounted in a fitting manner is specially provided at the opening of the cavity 2a of the housing 1.

In order to facilitate the connection between the connection base 2 and the housing 1, referring to fig. 3, the connection base 2 includes a connection portion 21 and a mounting portion 22, the connection portion 21 is exposed to the housing 1, and the mounting portion 22 is inserted into a mounting hole 1a of the housing 1 and connected to the housing 1 by providing a fastener 2 d. In order to form an effective seal between the housing 1 and the connection base 2, a double seal device 7 for preventing water leakage is provided between the housing 1 and the connection base 2, the double seal device 7 includes a first seal 7a and a second seal 7b, the first seal 7a is provided between the outer peripheral wall of the mounting portion 22 and the inner wall of the mounting hole 1a, and the second seal 7b is provided at a junction where the outer surface of the housing 1 contacts the connection portion 21.

Meanwhile, in order to conveniently pour glue into the cavity 2a, glue injection holes 5a on the bottom plate 5 are specially located in the middle of the bottom plate 5, a plurality of threading holes 5b which are distributed along the circumferential direction and are arranged at intervals and used for a wire harness to pass through are also formed in the bottom plate 5, and the glue injection holes 5a are all surrounded by the threading holes 5 b.

Example 2

Fig. 5 is a schematic view of embodiment 2, in this embodiment 2, the surface of each wire 4a penetrating down into the casing 1 is partially removed to expose the metal wire 4a1 in the area, and a waterproof heat-shrinkable sleeve 4b is sleeved at the exposed metal wire 4a1, so that the water leakage from the outside into the water pump can be further prevented based on the arrangement of the waterproof heat-shrinkable sleeve 4b, and other structures refer to embodiment 1; here, we can also divide the metal wire 4a1 into two sections, set a water-blocking joint between the two sections of metal wires 4a1, and sleeve the waterproof heat-shrinkable sleeve 4b outside, and prevent the outside water from leaking into the water pump by using the double protection of the water-blocking joint and the waterproof heat-shrinkable sleeve 4 b.

Example 3

Fig. 6 is a schematic view of embodiment 3, in this embodiment, the outer skin of each wire 4a in the cable connector 4 is partially removed to expose the metal wire 4a1 in the area, and a waterproof heat-shrinkable sleeve 4b is sleeved at the exposed metal wire 4a1, so that the water leakage from the outside into the water pump can be further prevented based on the arrangement of the waterproof heat-shrinkable sleeve 4b, and other structures refer to embodiment 1; here, we can also divide the metal wire 4a1 into two sections, set a water-blocking joint between the two sections of metal wires 4a1, and sleeve the waterproof heat-shrinkable sleeve 4b outside, and prevent the outside water from leaking into the water pump by using the double protection of the water-blocking joint and the waterproof heat-shrinkable sleeve 4 b.

It should be noted that, in the description of the present embodiment, the directions or positional relationships indicated by the terms "front, rear", "left, right", "inner, outer", "upper, lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims

1. The utility model provides a cable conductor seal connection structure of water pump, includes casing (1), connecting seat (2), gland nut (3) and cable joint (4), mounting hole (1 a) have been seted up on casing (1), connecting seat (2) are located on mounting hole (1 a), cable joint (4) wear to locate in connecting seat (2) and pass through gland nut (3) are fixed in on connecting seat (2), its characterized in that: the connecting seat (2) in be formed with and have opening cavity (2 a) to add bottom plate (5) in the opening part of this cavity (2 a), expose in many electric wires (4 a) of cable conductor joint (4) tip are all at least local place in cavity (2 a) and can pass bottom plate (5) enter into in casing (1), just still be equipped with injecting glue hole (5 a) on bottom plate (5), through injecting glue hole (5 a) towards in cavity (2 a) pouring glue material (6) and make the place in electric wire (4 a) of cavity (2 a) can be wrapped up by glue material (6) after the solidification and realize sealing.

2. The cable sealing connection structure of a water pump according to claim 1, wherein: the inner side wall of the cavity (2 a) is formed with a step surface (2 b) which can limit the sizing material (6) in the cavity (2 a) after solidification.

3. The cable sealing connection structure of a water pump according to claim 1, wherein: the outer surface of the electric wire (4 a) arranged in the cavity (2 a) is at least partially removed, so that the inner metal wire (4 a 1) is exposed in the cavity (2 a), and the sizing material (6) can wrap the outer surface of the metal wire (4 a 1) after solidification.

4. The cable sealing connection structure of a water pump according to claim 1, wherein: an installing groove (2 c) which can be used for embedding and installing the bottom plate (5) is arranged at the opening of the cavity (2 a) of the shell (1).

5. The cable sealing connection structure of a water pump according to claim 1, wherein: the connecting seat (2) comprises a connecting part (21) and a mounting part (22), wherein the connecting part (21) is exposed out of the shell (1), and the mounting part (22) is inserted into a mounting hole (1 a) of the shell (1) and is connected with the shell (1) through a fastener (2 d).

6. The cable sealing connection structure of a water pump according to claim 5, wherein: the double-sealing device is characterized in that a double-sealing device (7) for preventing water leakage is further arranged between the shell (1) and the connecting seat (2), the double-sealing device (7) comprises a first sealing piece (7 a) and a second sealing piece (7 b), the first sealing piece (7 a) is arranged between the outer peripheral wall of the mounting part (22) and the inner wall of the mounting hole (1 a), and the second sealing piece (7 b) is arranged at the joint of the outer surface of the shell (1) and the connecting part (21) in a touching manner.

7. The cable sealing connection structure of a water pump according to claim 1, wherein: the glue injection holes (5 a) are formed in the middle of the bottom plate (5), a plurality of threading holes (5 b) which are distributed along the circumferential direction and are arranged at intervals and used for a wire harness to pass through are further formed in the bottom plate (5), and the glue injection holes (5 a) are all surrounded by the threading holes (5 b).

8. The cable sealing connection structure of a water pump according to claim 1, wherein: the surface of each electric wire (4 a) penetrating down into the shell (1) is partially removed, so that the metal wire (4 a 1) of the electric wire (4 a) is exposed outside, and a waterproof heat-shrinkable sleeve (4 b) is sleeved at the exposed metal wire (4 a 1).

9. The cable sealing connection structure of a water pump according to claim 1, wherein: the outer surface of each electric wire (4 a) arranged in the cable connector (4) is partially removed, so that the metal wire (4 a 1) of the electric wire (4 a) is exposed outside, and a waterproof heat-shrinkable sleeve (4 b) is sleeved at the exposed metal wire (4 a 1).