Sealing structure of explosion-proof electric box

Abstract

The utility model relates to the technical field of explosion-proof electric boxes, in particular to a sealing structure of an explosion-proof electric box, which comprises a box body and a sealing device, a cover body is mounted on the surface of the box body, a spool is mounted on the lower surface of the box body, the sealing device is arranged on the lower surface of the spool, the sealing device comprises a second sealing sleeve, and the second sealing sleeve is fixedly connected with the spool. A second rubber ring is fixedly connected to the surface of the second sealing sleeve, a first hole is formed in the surface of the second sealing sleeve, a movable rod is slidably connected to the inner wall of the first hole in the surface of the second sealing sleeve, a supporting plate is fixedly connected to one side of the movable rod, and a first sealing sleeve is fixedly connected to the side, away from the supporting plate, of the movable rod. According to the utility model, the sealing between the cable and the wire pipe is facilitated, the condition that dust enters the box body is reduced, the safety of equipment is improved, the conditions of electric leakage, short circuit and other electrical faults caused by the dust entering the box body are reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof electric boxes, in particular to a sealing structure of an explosion-proof electric box. Background Art

[0002] An explosion-proof electrical box is an electrical control box with explosion-proof function. It is mainly used in environments with explosion hazards, such as petroleum, chemical, coal mining and other industries. Through special design and manufacturing processes, the explosion-proof electrical box can prevent the electric sparks and high temperatures generated in the box from causing the explosion of surrounding explosive gases or dust. The explosion-proof electrical box plays an important role in ensuring production safety and preventing explosion accidents. Different application scenarios may require explosion-proof electrical boxes of different specifications and types to meet specific safety requirements.

[0003] The prior art has a utility model with a publication number of CN215989803U. The utility model relates to the field of electric control boxes, specifically an explosion-proof distribution box, whose structure includes: a box body, a bottom cavity door plate, a control cavity plate, a sealed front cover, and a control button. The front end surface of the box body is connected to the sealed front cover by bolts, the control cavity plate is arranged on the top of the sealed front cover surface, and is movably connected. The bottom cavity door plate is arranged on the bottom of the sealed front cover, and the bottom cavity door plate and the sealed front cover are gap-matched; Beneficial effect: The card slot in the utility model can be flexibly placed in The surface of the bottom plate is convenient for placing the positioning end plate. The through grooves on the surface of the positioning end plate are convenient for lead-in, and the positioning end plate can be cut according to needs. When in an abnormal sudden situation and high temperature is generated inside, the fuse axis will soften and twist due to the heat. At this time, the movable end plate will move downward to cover and protect the surrounding components to avoid damage to the surrounding devices. However, when installing the cable, a gap remains at the connection between the cable and the wire tube, and the sealing effect is poor. It is difficult to effectively prevent combustible gases, dust, etc. from entering the interior of the electrical box, increasing the risk of explosion.

[0004] In order to solve the problem that gaps remain at the connections between cables and wire tubes, the sealing effect is poor, and it is difficult to effectively prevent combustible gases from entering the box, the existing technology uses threaded fastening, but gaps remain between the cables and the wire tubes, which leads to dust entering the box through the gaps. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that there are residual gaps at the connection between the cable and the wire tube, the sealing effect is poor, and it is difficult to effectively prevent the combustible gas from entering the box body, and proposes a sealing structure for an explosion-proof electrical box.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing structure of an explosion-proof electrical box, comprising a box body and a sealing device, a cover body is installed on the surface of the box body, a wire tube is installed on the lower surface of the box body, and the sealing device is arranged on the lower surface of the wire tube, the sealing device comprises a second sealing sleeve, the second sealing sleeve is fixedly connected to the wire tube, the surface of the second sealing sleeve is fixedly connected to a second rubber ring, the surface of the second sealing sleeve is provided with a hole one, the inner wall of the hole one on the surface of the second sealing sleeve is slidably connected with a moving rod, one side of the moving rod is fixedly connected with a support plate, the side of the moving rod away from the support plate is fixedly connected with a first sealing sleeve, the surface of the first sealing sleeve is fixedly connected with a first rubber ring, the surface of the support plate is provided with a hole two, and one side of the wire tube is fixedly connected with a threaded rod, and the threaded rod is inserted into the hole two on the surface of the support plate. By arranging the sealing device, it is convenient to seal between the cable and the wire tube, reduce the situation of dust entering the box body, improve the safety of the equipment, and reduce the situation of electrical faults such as leakage and short circuit caused by dust entering the box body.

[0007] Preferably, a knob is threadedly connected to the surface of the threaded rod, and the knob abuts against the support plate. By setting the threaded rod, when in use, the threaded rod cooperates with the knob to facilitate fitting the first sealing sleeve and the second sealing sleeve to seal the cable and the wire tube.

[0008] Preferably, the first sealing sleeve and the second sealing sleeve are arranged in mirror symmetry, and the first sealing sleeve and the second sealing sleeve are arranged in a semicircular arc shape. By arranging the first sealing sleeve, it is convenient to cooperate with the second sealing sleeve to seal the connection between the wire tube and the cable, thereby increasing the usability of the equipment.

[0009] Preferably, a lifting device is provided on the lower surface of the box, and the lifting device includes a mounting plate, the mounting plate is fixedly connected to the box, a rocker is rotatably connected to the surface of the mounting plate, the rocker is interference fit with the mounting plate, a pull rope is sleeved on the surface of the rocker, and a fixing rod is fixedly connected to the lower surface of the box, and a ring is slidably connected to the surface of the fixing rod. By providing the lifting device, the bending and entanglement of cables that affect the power transportation of the equipment is reduced, the safety of the equipment is increased, the operation is convenient, the service life of the equipment is increased, and maintenance is convenient.

[0010] Preferably, there are two fixing rods, and the two fixing rods are arranged in a mirror-symmetrical manner. By arranging the fixing rods, it is convenient to drive the ring to slide, and it is convenient for the ring to adjust its own height according to actual use requirements.

[0011] Preferably, the collar is provided in a hollow circle, and the side of the pull rope away from the rocker is fixedly connected to the collar. By providing the collar, it is convenient to sleeve the cable and separate the distances, thereby reducing the entanglement of the cable and increasing the safety of the equipment.

[0012] Preferably, there are two mounting plates, which are arranged in mirror symmetry. One side of the rocker passes through the mounting plate and is fixedly connected with a disc. By setting the disc, when in use, rotating the disc facilitates the rotation of the rocker, thereby assisting the rocker in driving the pull rope.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, by setting a sealing device, when in use, the cable is inserted into the wire tube, and the knob is turned at this time, the knob moves toward the direction of the support plate and squeezes the support plate, the support plate drives the moving rod, and the moving rod drives the first sealing sleeve and the first rubber ring and the second sealing sleeve and the second rubber ring to tightly clamp the cable to complete the sealing. By setting a sealing device, it is convenient to seal between the cable and the wire tube, reduce the situation of dust entering the box, improve the safety of the equipment, reduce the situation of electrical faults such as leakage and short circuit caused by dust entering the box, and increase the service life of the equipment.

[0015] 2. In the utility model, by setting a lifting device, after the cable is installed, it is easy to bend and entangle, which affects the power transportation of the cable. During installation, the cable passes through the ring, and the ring separates the cable. By rotating the disc, the rocker is driven, and the rocker drives the pull rope, which is convenient for controlling the height of the ring and facilitating the matching of the cable. The cable is lifted according to the length of the cable. By setting a lifting device, the situation where the cable is bent and entangled and affects the power transportation of the equipment is reduced, the safety of the equipment is increased, the operation is convenient, the service life of the equipment is increased, and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a sealing structure of an explosion-proof electrical box is proposed for the utility model;

[0017] Figure 2 A side view structural diagram of a sealing structure of an explosion-proof electrical box is provided for the utility model;

[0018] Figure 3 A schematic diagram of the sealing device structure of a sealing structure of an explosion-proof electrical box is provided for the utility model;

[0019] Figure 4 The utility model proposes a sealing structure of an explosion-proof electric box Figure 4 A schematic diagram of the enlarged structure at point A;

[0020] Figure 5 The utility model provides a structural schematic diagram of a lifting device for a sealing structure of an explosion-proof electrical box.

[0021] Legend: 1. Box body; 2. Cover body; 3. Wire tube; 4. Sealing device; 41. First sealing sleeve; 42. First rubber ring; 43. Second sealing sleeve; 44. Second rubber ring; 45. Moving rod; 46. Support plate; 47. Threaded rod; 48. Knob; 5. Lifting device; 51. Rocker; 52. Disc; 53. Mounting plate; 54. Pull rope; 55. Fixing rod; 56. Ring. DETAILED DESCRIPTION

[0022] See also Figure 1-5 The utility model provides a technical solution: a sealing structure of an explosion-proof electrical box, comprising a box body 1 and a sealing device 4, a cover body 2 is installed on the surface of the box body 1, a wire tube 3 is installed on the lower surface of the box body 1, and the sealing device 4 is arranged on the lower surface of the wire tube 3.

[0023] The specific arrangement and function of the sealing device 4 and the lifting device 5 will be described in detail below.

[0024] In this embodiment: the sealing device 4 includes a second sealing sleeve 43, the second sealing sleeve 43 is fixedly connected to the wire tube 3, a second rubber ring 44 is fixedly connected to the surface of the second sealing sleeve 43, a hole 1 is opened on the surface of the second sealing sleeve 43, a moving rod 45 is slidably connected to the inner wall of the hole 1 on the surface of the second sealing sleeve 43, one side of the moving rod 45 is fixedly connected to a support plate 46, a side of the moving rod 45 away from the support plate 46 is fixedly connected to the first sealing sleeve 41, the surface of the first sealing sleeve 41 is fixedly connected to the first rubber ring 42, a hole 2 is opened on the surface of the support plate 46, a threaded rod 47 is fixedly connected to one side of the wire tube 3, and the threaded rod 47 is inserted into the hole 2 on the surface of the support plate 46. By setting the sealing device 4, it is convenient to seal the cable and the wire tube 3, reduce the situation of dust entering the box body 1, improve the safety of the equipment, and reduce the situation of electrical faults such as leakage and short circuit caused by dust entering the box body 1.

[0025] Specifically, the surface of the threaded rod 47 is threadedly connected with a knob 48, and the knob 48 abuts against the support plate 46. By setting the threaded rod 47, when in use, the threaded rod 47 cooperates with the knob 48 to facilitate the first sealing sleeve 41 and the second sealing sleeve 43 to fit together and seal the cable and the wire tube 3.

[0026] Specifically, the first sealing sleeve 41 and the second sealing sleeve 43 are arranged in mirror symmetry, and the first sealing sleeve 41 and the second sealing sleeve 43 are arranged in a semicircular arc shape. By setting the first sealing sleeve 41, it is convenient to cooperate with the second sealing sleeve 43 to seal the connection between the wire tube 3 and the cable, thereby increasing the usability of the equipment.

[0027] Specifically, a lifting device 5 is provided on the lower surface of the box body 1, and the lifting device 5 includes a mounting plate 53, which is fixedly connected to the box body 1, and a rocker 51 is rotatably connected to the surface of the mounting plate 53, and the rocker 51 is interference fit with the mounting plate 53, and a pull rope 54 is sleeved on the surface of the rocker 51, and a fixing rod 55 is fixedly connected to the lower surface of the box body 1, and a ring 56 is slidably connected to the surface of the fixing rod 55.

[0028] In this embodiment: by providing the lifting device 5, the situation where the bending and entanglement of cables affect the power transportation of the equipment is reduced, the safety of the equipment is increased, the operation is convenient, the service life of the equipment is increased, and maintenance is convenient.

[0029] Specifically, there are two fixing rods 55, and the two fixing rods 55 are arranged in a mirror-symmetrical manner.

[0030] In this embodiment, by providing a fixing rod 55 , it is convenient to drive the ring 56 to slide, so that the ring 56 can adjust its height according to actual use requirements.

[0031] Specifically, the ring 56 is arranged in a hollow circle, and the side of the pull rope 54 away from the rocker 51 is fixedly connected to the ring 56. By setting the ring 56, it is convenient to sleeve the cable and separate the distance, reduce the cable entanglement, and increase the safety of the equipment.

[0032] Specifically, there are two mounting plates 53 , and the two mounting plates 53 are arranged in a mirror-symmetrical manner. One side of the rocker 51 passes through the mounting plates 53 and is fixedly connected to the disc 52 .

[0033] In this embodiment, by providing a disc 52 , when in use, rotating the disc 52 facilitates the rocker 51 to rotate, thereby assisting the rocker 51 in driving the pull rope 54 .

[0034] Working principle: By setting the sealing device 4, when in use, the cable is inserted into the wire tube 3, and the knob 48 is turned at this time, the knob 48 moves in the direction of the support plate 46 and squeezes the support plate 46, the support plate 46 drives the moving rod 45, and the moving rod 45 drives the first sealing sleeve 41 and the first rubber ring 42 and the second sealing sleeve 43 and the second rubber ring 44 to tightly clamp the cable to complete the sealing. By setting the sealing device 4, it is convenient to seal between the cable and the wire tube 3, reduce the situation of dust entering the box 1, improve the safety of the equipment, and reduce the leakage and short circuit caused by dust entering the box 1. The lifting device 51 is used to lift the cable according to its length, thereby preventing electrical faults such as line failure and improving the service life of the equipment. After the cable is installed, it is easy to bend and entangle, which affects the power transportation of the cable. During installation, the cable passes through the ring 56, which separates the cable. By rotating the disc 52, the rocker 51 is driven, and the rocker 51 drives the pull rope 54, which is convenient for controlling the height of the ring 56 and cooperating with the cable. The lifting device 5 is provided to reduce the situation where the cable is bent and entangled and affects the power transportation of the equipment, thereby increasing the safety of the equipment, facilitating operation, improving the service life of the equipment, and facilitating maintenance.

Claims

1. A sealing structure for an explosion-proof electrical box, comprising a box body (1) and a sealing device (4), characterized in that: A cover body (2) is installed on the surface of the box body (1), a wire tube (3) is installed on the lower surface of the box body (1), the sealing device (4) is arranged on the lower surface of the wire tube (3), the sealing device (4) comprises a second sealing sleeve (43), the second sealing sleeve (43) is fixedly connected to the wire tube (3), the surface of the second sealing sleeve (43) is fixedly connected to a second rubber ring (44), the surface of the second sealing sleeve (43) is provided with a first hole, the inner wall of the first hole on the surface of the second sealing sleeve (43) is slidably connected to a moving rod (45), one side of the moving rod (45) is fixedly connected to a supporting plate (46), the side of the moving rod (45) away from the supporting plate (46) is fixedly connected to a first sealing sleeve (41), the surface of the first sealing sleeve (41) is fixedly connected to a first rubber ring (42), the surface of the supporting plate (46) is provided with a second hole, one side of the wire tube (3) is fixedly connected to a threaded rod (47), and the threaded rod (47) is inserted into the second hole on the surface of the supporting plate (46).

2. The sealing structure of an explosion-proof electrical box according to claim 1, characterized in that: A knob (48) is threadedly connected to the surface of the threaded rod (47), and the knob (48) abuts against the support plate (46).

3. The sealing structure of an explosion-proof electrical box according to claim 1, characterized in that: The first sealing sleeve (41) and the second sealing sleeve (43) are arranged in a mirror-symmetrical manner, and the first sealing sleeve (41) and the second sealing sleeve (43) are arranged in a semicircular arc shape.

4. The sealing structure of an explosion-proof electrical box according to claim 1, characterized in that: The lower surface of the box body (1) is provided with a lifting device (5), the lifting device (5) comprises a mounting plate (53), the mounting plate (53) is fixedly connected to the box body (1), a rocker (51) is rotatably connected to the surface of the mounting plate (53), the rocker (51) and the mounting plate (53) are interference fit, a pull rope (54) is sleeved on the surface of the rocker (51), a fixing rod (55) is fixedly connected to the lower surface of the box body (1), and a ring (56) is slidably connected to the surface of the fixing rod (55).

5. The sealing structure of an explosion-proof electrical box according to claim 4, characterized in that: There are two fixing rods (55), and the two fixing rods (55) are arranged in a mirror-symmetrical manner.

6. The sealing structure of an explosion-proof electrical box according to claim 4, characterized in that: The collar (56) is arranged in the form of a hollow circle, and the side of the pull rope (54) away from the rocker (51) is fixedly connected to the collar (56).

7. The sealing structure of an explosion-proof electrical box according to claim 4, characterized in that: There are two mounting plates (53), and the two mounting plates (53) are arranged in a mirror-symmetrical manner. One side of the rocker (51) passes through the mounting plates (53) and is fixedly connected to the disc (52).

Images