Cable sealing device

Abstract

The utility model discloses a sealing device for a cable, which is applied to sealing of connection between a lead tube and a motor and comprises a base, a sealing ring, a first T-shaped sleeve, a gland and a second T-shaped sleeve. The base comprises a first connecting part and a filling part, the first connecting part is provided with a first shaft hole, and the filling part is provided with a second shaft hole; the sealing ring is arranged in the second shaft hole; the large-diameter section of the first T-shaped sleeve is matched with the second shaft hole, and the small-diameter section of the first T-shaped sleeve is matched with the first shaft hole; the gland comprises a second connecting part and a sealing part, the second connecting part is in threaded fit with the second shaft hole, the second connecting part is provided with a third shaft hole, and the sealing part is provided with a fourth shaft hole; the large-diameter section of the second T-shaped sleeve is matched with the third shaft hole, and the small-diameter section of the second T-shaped sleeve is matched with the fourth shaft hole. In the rotating process of the gland, the packing is extruded through the sealing ring, the packing is forced to be tightly pressed on the lead pipe, radial force with the sealing effect is generated, and therefore the sealing effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a device for sealing motor leads. Background Art

[0002] In motors, the wiring process can easily lead to safety hazards such as electrical leakage, electrical degradation, and even fire. Therefore, effective sealing is essential for wiring outlets. The type of sealing material and construction method also affect the sealing effect. Inadequate sealing increases the risk of equipment malfunction or damage. Common methods for sealing wiring outlets include the following: 1. Sealant: While ensuring the integrity of the wiring outlet, sealant is used to effectively seal the wires. However, improper use can cause the sealant to rupture, leading to electrical leakage or even explosion, and the service life of sealant is also limited. 2. Sealing Sleeve: Sealing sleeves come in a variety of materials, including silicone, rubber, PVC, and PE. Each material has different sealing effects and service lives. The appropriate material and model should be selected based on multiple factors, including sealing requirements, ambient temperature, and fire resistance rating. For temperature sensors used to measure bearing temperature, glue is generally used to seal the sensor leads to the equipment. During the measurement process, the temperature sensor is placed in high-temperature oil for a long time. The glue sealing effect is not good enough, which can easily cause oil to leak through the leads into the device electrically connected to the temperature sensor. Therefore, the leads are wrapped with a protective tube. However, the protective tube and the motor are not sealed tightly, which may cause oil leakage or water ingress to the motor. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and to provide a cable sealing device which has good sealing effect and is easy to install.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A cable sealing device is used for sealing the connection between a lead tube and a motor. The sealing device comprises a base, a sealing ring, a first T-shaped sleeve, a gland and a second T-shaped sleeve.

[0006] The base includes a first connecting part and a filling part, the first connecting part is provided with a first axial hole, the filling part is provided with a second axial hole, and the first axial hole is connected to the second axial hole; a sealing ring is arranged in the second axial hole, and a filler located on the inner side of the sealing ring is provided in the second axial hole; the first T-shaped sleeve is divided into two sections according to the outer diameter, its large diameter section cooperates with the second axial hole, and its small diameter section cooperates with the first axial hole; the pressure cover includes a second connecting part and a sealing part, the second connecting part is threadedly engaged with the second axial hole, the second connecting part is provided with a third axial hole, and the sealing part is provided with the fourth axial hole; the second T-shaped sleeve is divided into two sections according to the outer diameter, its large diameter section cooperates with the third axial hole, and its small diameter section cooperates with the fourth axial hole.

[0007] Furthermore, it also includes a first sealing gasket and a second sealing gasket, the first sealing gasket is sleeved on the inner end of the connecting part, and the second sealing gasket is arranged between the filling part and the sealing part.

[0008] Furthermore, the aperture of the first axial hole is smaller than the aperture of the second axial hole; and the aperture of the third axial hole is larger than the aperture of the fourth axial hole.

[0009] Furthermore, the second axial hole is a tapered hole with a tapered opening.

[0010] Furthermore, a thread is provided on the outer side of the first connection portion, and the first connection portion is connected to the motor via the thread.

[0011] Furthermore, the filler in the second axial hole is polytetrafluoroethylene dispersed resin.

[0012] Furthermore, external hexagonal force-bearing parts are provided on the outer sides of the first connecting part and the sealing part.

[0013] The beneficial effects of the present invention are as follows: the cable sealing device seals the connection between the lead tube and the motor via a first T-shaped sleeve, a second T-shaped sleeve, and a filler. During installation, the base is connected to the motor, and the gland is connected to the filling portion of the base. During rotation of the gland, the sealing ring compresses the filler, forcing the filler to press against the lead tube, generating a radial force that creates a sealing effect, thereby achieving a sealing effect. The second T-shaped sleeve further strengthens the seal between the gland and the lead tube, and can also prevent overflow when a fluid filler is squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of an embodiment;

[0015] Figure 2 is a cross-sectional view of an embodiment;

[0016] Marking instructions: 1-base, 2-pressure cover, 3-sealing ring, 4-filling, 5-first T-shaped sleeve, 6-second T-shaped sleeve, 7-first sealing gasket, 8-second sealing gasket, 9-lead tube, 11-first connecting part, 12-filling part, 13-first axial hole, 14-second axial hole, 21-second connecting part, 22-sealing part, 23-third axial hole, 24-fourth axial hole. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] like Figures 1 to 2 As shown, a cable sealing device is used for sealing the connection between a lead tube 9 and a motor. The sealing device includes: a base 1, a sealing ring 3, a first T-shaped sleeve, a pressure cover 2 and a second T-shaped sleeve.

[0019] The base 1 includes a first connecting part 11 and a filling part 12, the first connecting part 11 is provided with a first axial hole 13, the filling part 12 is provided with a second axial hole 14, and the first axial hole 13 is connected to the second axial hole 14; the sealing ring 3 is arranged in the second axial hole 14, and the second axial hole 14 is provided with a filler 4 located on the inner side of the sealing ring 3; the first T-shaped sleeve is divided into two sections according to the outer diameter, its large diameter section cooperates with the second axial hole 14, and its small diameter section cooperates with the first axial hole 13; the pressure cover 2 includes a second connecting part 21 and a sealing part 22, the second connecting part 21 is threadedly engaged with the second axial hole 14, the second connecting part 21 is provided with a third axial hole 23, and the sealing part 22 is provided with the fourth axial hole 24; the second T-shaped sleeve is divided into two sections according to the outer diameter, its large diameter section cooperates with the third axial hole 23, and its small diameter section cooperates with the fourth axial hole 24.

[0020] Preferably, the sealing device further includes a first sealing gasket 7 and a second sealing gasket 8. The first sealing gasket 7 is sleeved on the inner end of the connecting portion, and the second sealing gasket 8 is disposed between the filling portion 12 and the sealing portion 22. The first sealing gasket 7 seals the base 1 and the motor to prevent oil leakage. The second sealing gasket 8 strengthens the seal between the base 1 and the gland 2.

[0021] Preferably, the aperture of the first axial hole 13 is smaller than the aperture of the second axial hole 14 ; the aperture of the third axial hole 23 is larger than the aperture of the fourth axial hole 24 .

[0022] Preferably, the second axial hole 14 is a tapered hole with a tapered opening.

[0023] Preferably, the outer side of the first connecting portion 11 is provided with threads, and the first connecting portion 11 is connected to the motor via the threads.

[0024] Preferably, the filler 4 in the second axial hole 14 is polytetrafluoroethylene dispersion resin.

[0025] Preferably, external hexagonal force-bearing portions are provided on the outer sides of the first connecting portion 11 and the sealing portion 22 .

[0026] This cable sealing device seals the connection between the lead tube 9 and the motor using a first T-shaped sleeve, a second T-shaped sleeve, and filler 4. During installation, the base 1 is connected to the motor, and the gland 2 is connected to the filling portion 12 of the base 1. During rotation, the gland 2 compresses the filler 4 via the sealing ring 3, forcing the filler 4 against the lead tube 9, generating a radial force that creates a sealing effect, thereby achieving a seal. The second T-shaped sleeve further strengthens the seal between the gland 2 and the lead tube 9 and prevents overflow when using fluid filler 4.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0028] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the protection content of the present invention.

Claims

1. A cable sealing device, used for sealing the connection between a lead tube (9) and a motor, characterized in that: include: The base (1) comprises a first connecting portion (11) and a filling portion (12), wherein the first connecting portion (11) is provided with a first axial hole (13), the filling portion (12) is provided with a second axial hole (14), and the first axial hole (13) is in communication with the second axial hole (14); A sealing ring (3) is arranged in the second axial hole (14), and a filler (4) is arranged in the second axial hole (14) and is located inside the sealing ring (3); The first T-shaped sleeve is divided into two sections according to the size of the outer diameter, the large diameter section of which matches the second shaft hole (14), and the small diameter section of which matches the first shaft hole (13); The gland (2) comprises a second connecting portion (21) and a sealing portion (22), wherein the second connecting portion (21) is threadedly engaged with the second axial hole (14), the second connecting portion (21) is provided with a third axial hole (23), and the sealing portion (22) is provided with a fourth axial hole (24); and The second T-shaped sleeve is divided into two sections according to the size of the outer diameter, the large diameter section of which matches the third shaft hole (23), and the small diameter section of which matches the fourth shaft hole (24).

2. The cable sealing device according to claim 1, characterized in that: It also includes a first sealing gasket (7) and a second sealing gasket (8), wherein the first sealing gasket (7) is sleeved on the inner end of the connecting portion, and the second sealing gasket (8) is arranged between the filling portion (12) and the sealing portion (22).

3. The cable sealing device according to claim 1, characterized in that: The aperture of the first axial hole (13) is smaller than the aperture of the second axial hole (14); and the aperture of the third axial hole (23) is larger than the aperture of the fourth axial hole (24).

4. The cable sealing device according to claim 1, characterized in that: The second axial hole (14) is a tapered hole with a tapered opening.

5. The cable sealing device according to claim 1, characterized in that: The outer side of the first connecting portion (11) is provided with a thread, and is connected to the motor via the thread.

6. The cable sealing device according to claim 1, characterized in that: The filler (4) in the second axial hole (14) is polytetrafluoroethylene dispersed resin.

7. The cable sealing device according to claim 1, characterized in that: External hexagonal force-bearing portions are provided on the outsides of the first connecting portion (11) and the sealing portion (22).

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