Explosion-proof junction box

Abstract

The utility model belongs to the technical field of explosion-proof junction boxes, and particularly relates to an explosion-proof junction box, which comprises a box body, an explosion-proof cover is rotatably mounted at the top of the box body, a limiting groove is formed in the box body, a sealing gasket fixed with the bottom of the explosion-proof cover is arranged in the limiting groove, a placement box is fixedly mounted in the explosion-proof cover, and a permeable plate is fixedly mounted at the bottom of the placement box. A threaded pipe is fixedly mounted at the top of the placement box, and a protective cover is mounted on the threaded pipe in a threaded manner; a limiting groove is formed in the box body, the power cavity is formed in the box body and located on one side of the limiting groove, sliding grooves are formed in the box body and located on the left side and the right side of the power cavity, and grooves are formed in the two sides of the box body. The fixing mode is convenient, and a drying agent can be put into the placing box, so that air in the placing box can be kept in a dry state, and the influence on the use of the electrical equipment is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof junction boxes, and particularly relates to an explosion-proof junction box. Background Technique

[0002] An explosion-proof junction box is a special power distribution device used in various high-risk places. Compared with a civilian junction box, it is a live wire distribution box with explosion-proof functions after various explosion-proof transformations.

[0003] For example, the Chinese patent with the publication number CN210779943U discloses an explosion-proof junction box, belonging to the field of junction boxes. The explosion-proof junction box includes a box body and an explosion-proof cover. The explosion-proof cover is located above the box body. An annular connecting plate is sleeved on the upper part of the outer side of the box body, and the inner side surface of the annular connecting plate is fixedly connected with the outer side surface of the box body. Through the mutual cooperation of the annular connecting plate, the slot and the inserting rod, the explosion-proof cover can be installed on the box body. Then, through the mutual cooperation of the installation groove, the auxiliary limiting device and the limiting groove, the inserting rod inserted into the slot can be fixed and limited, and then the explosion-proof cover can be fixed and limited, so as to complete the rapid installation of the explosion-proof cover. And through the cooperation of the positioning groove, the square positioning frame and the sealing gasket, the explosion-proof cover and the box body are sealed and installed, and the sealing performance is good, so as to achieve fast installation and good sealing effect, and avoid the problem that external air easily enters the inside of the explosion-proof junction box and causes potential safety hazards.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages in use. For example, when fixing the explosion-proof cover to the box body, it is necessary to rotate multiple turning handles to fix the explosion-proof cover on the box body, and the operation is relatively cumbersome. At the same time, when the explosion-proof cover is opened, air will enter the box body. After the explosion-proof cover is sealed again, this humid air will be in the box body. The humid environment will cause the insulating material of the electrical equipment to get damp, resulting in a decrease in insulation resistance. In view of this, we propose an explosion-proof junction box. Content of the Utility Model

[0006] The purpose of the utility model is to provide an explosion-proof junction box to solve the problems raised in the above background technique.

[0007] In view of this, the utility model provides an explosion-proof junction box, including:

[0008] A box body, on the top of the box body, an explosion-proof cover is rotatably installed. A limiting groove is opened in the box body, and a sealing gasket fixed to the bottom of the explosion-proof cover is arranged in the limiting groove. A placement box is fixedly installed in the explosion-proof cover. A breathable plate is fixedly installed at the bottom of the placement box. A threaded pipe is fixedly installed at the top of the placement box, and a protective cover is threadedly installed on the threaded pipe;

[0009] The power chamber is provided in the box body and is located on one side of the limiting groove. Sliding grooves are provided on both the left and right sides of the power chamber in the box body. Grooves are provided on both sides of the box body. A connecting plate fixed to the bottom of the explosion-proof cover is provided in the groove. A threaded rod is rotatably installed in the sliding groove. A rectangular rod is slidably installed on the threaded rod in the sliding groove. The rectangular rod is threadedly connected to the threaded rod. One end of the rectangular rod extends into the corresponding connecting plate. A worm gear is rotatably installed in the power chamber. A worm is rotatably installed on the top of the worm gear in the power chamber. The worm is meshed with the worm gear. One end of the worm penetrates through the front side of the power chamber and extends to the outside. Both ends of the worm gear penetrate through the left and right sides of the power chamber respectively and are coaxially connected to the corresponding threaded rods.

[0010] In this technical solution, during use, the staff rotates the protective cover. Under the action of the thread, the protective cover will rotate and move upward until the protective cover completely disengages from the threaded tube. At this time, desiccant can be put into the placement box through the threaded tube. Subsequently, under the action of the thread, the protective cover is rotated and threadedly installed on the threaded tube, so that the bottom of the protective cover tightly abuts against the top of the rubber ring, thereby being able to seal the threaded tube. Then, rotate and close the explosion-proof cover, so that the two connecting plates at the bottom of the explosion-proof cover respectively enter the two grooves. At this time, the sealing gasket at the bottom of the explosion-proof cover will enter the limiting groove and be in close contact with the inner wall of the limiting groove. Subsequently, turn the handle on the worm by hand to drive the worm to rotate. Under the action of meshing, the worm will drive the worm gear to rotate. The worm gear will drive the two threaded rods to rotate. Under the action of the thread, the two threaded rods will drive the two rectangular rods to move away from each other respectively, so that the mutually remote ends of the two rectangular rods are respectively inserted into the two connecting plates. At this time, the explosion-proof cover is fixed on the box body. Because the worm and the worm gear have a self-locking function, without the action of external force, the worm and the worm gear will not rotate. Under the action of the sealing gasket, the box body can be effectively sealed.

[0011] Under the action of the desiccant, the air in the box body will contact the desiccant in the placement box through the air-permeable plate, so that the air in the placement box can be kept dry.

[0012] In the above technical solution, further, the sealing gasket is in close contact with the inner wall of the limiting groove.

[0013] In this technical solution, it is ensured that the sealing gasket can seal the opening of the box body.

[0014] In the above technical solution, further, a rubber ring is fixedly installed on the top of the box body around the threaded tube, and the top of the rubber ring is in close contact with the bottom of the protective cover.

[0015] In this technical solution, after the protective cover is rotated and threadedly installed on the threaded pipe, the bottom of the protective cover will closely abut against the top of the rubber ring, thereby being able to seal the threaded pipe.

[0016] In the above technical solution, further, one end of the rectangular rod is inserted and matched with the connecting plate, and the connecting plate and the explosion-proof cover are of an integrally formed structure.

[0017] In this technical solution, ensure that one end of the rectangular rod can be inserted into the connecting plate; ensure the structural stability between the connecting plate and the explosion-proof cover.

[0018] In the above technical solution, further, the threaded pipe is communicated with the inner cavity of the placement box.

[0019] In this technical solution, ensure that desiccant can be put into the placement box through the threaded pipe.

[0020] In the above technical solution, further, both ends of the worm gear are rotatably connected to the box body, and the groove is communicated with the corresponding sliding groove.

[0021] In this technical solution, ensure that the worm gear can operate normally; ensure that one end of the rectangular rod can enter and exit the connecting plate located in the groove.

[0022] In the above technical solution, further, both sides of the limiting groove are of an arc-shaped structure, both sides of the sealing gasket are of an arc-shaped structure, and the threads on the two threaded rods are opposite.

[0023] In this technical solution, ensure that when the sealing gasket is in the limiting groove, the explosion-proof cover can be opened smoothly, avoiding the situation that the sealing gasket hinders the opening of the explosion-proof cover; ensure that when the two threaded rods rotate, they can drive the two rectangular rods to move away from or close to each other.

[0024] The beneficial effects of the present utility model are:

[0025] 1. For this explosion-proof junction box, through the cooperation among the power cavity, the worm, the worm gear, the sliding groove, the rectangular rod and the threaded rod, when fixing the explosion-proof cover, only need to rotate the handle on the worm by hand to fix the explosion-proof cover, and its fixing method is relatively convenient.

[0026] 2. For this explosion-proof junction box, through the mutual cooperation among the explosion-proof cover, the placement box, the ventilation plate, the protective cover and the threaded pipe, ensure that desiccant can be put into the placement box, so that the air in the placement box can be kept dry, avoiding affecting the use of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0028] Figure 2 Schematic diagram of the internal structure of the box body in the present utility model;

[0029] Figure 3 The present utility model Figure 2 Enlarged schematic diagram of the structure at position A in the present utility model;

[0030] Figure 4 Schematic sectional view of the box body in the present utility model;

[0031] Figure 5 Schematic diagram of the regional structure of the explosion-proof cover in the present utility model;

[0032] Figure 6 Schematic diagram of the internal structure of the placement box in the present utility model.

[0033] The markings in the figure are represented as:

[0034] 1. Box body; 2. Explosion-proof cover; 3. Placement box; 4. Connecting plate; 5. Protection cover; 6. Threaded rod; 7. Rectangular rod; 8. Limiting groove; 9. Power cavity; 10. Worm; 11. Worm gear; 12. Chute; 13. Groove; 14. Sealing gasket; 15. Ventilation plate; 16. Threaded pipe; 17. Rubber ring. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] It should be noted that in the description of the present application, terms such as "first", "second", etc. in the specification and claims are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0038] It should be noted that in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0039] It should be noted that in the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0040] Embodiment 1:

[0041] Please refer to Figure 1 - Figure 6 as shown, this embodiment provides an explosion-proof junction box, including:

[0042] The box body 1 is rotatably installed with an explosion-proof cover 2 at the top. A limiting groove 8 is opened in the box body 1. A gasket 14 fixed to the bottom of the explosion-proof cover 2 is arranged in the limiting groove 8. A placement box 3 is fixedly installed in the explosion-proof cover 2. A ventilation plate 15 is fixedly installed at the bottom of the placement box 3. A threaded pipe 16 is fixedly installed at the top of the placement box 3. A protective cover 5 is threadedly installed on the threaded pipe 16.

[0043] The power chamber 9 is opened in the box body 1 and is located on one side of the limiting groove 8. Sliding grooves 12 are opened on the left and right sides of the box body 1 and located in the power chamber 9. Grooves 13 are opened on both sides of the box body 1. A connecting plate 4 fixed to the bottom of the explosion-proof cover 2 is arranged in the groove 13. A threaded rod 6 is rotatably installed in the sliding groove 12. A rectangular rod 7 is slidably installed on the threaded rod 6 in the sliding groove 12. The rectangular rod 7 is threadedly connected to the threaded rod 6. One end of the rectangular rod 7 extends into the corresponding connecting plate 4. A worm gear 11 is rotatably installed in the power chamber 9. A worm 10 is rotatably installed at the top of the worm gear 11 in the power chamber 9. The worm 10 is meshed with the worm gear 11. One end of the worm 10 penetrates through the front side of the power chamber 9 and extends to the outside. Both ends of the worm gear 11 penetrate through the left and right sides of the power chamber 9 and are coaxially connected to the corresponding threaded rods 6.

[0044] Among them, during use, the staff rotates the protective cover 5. Under the action of the thread, the protective cover 5 will rotate and move upward until the protective cover 5 completely disengages from the threaded pipe 16. At this time, desiccant can be put into the placement box 3 through the threaded pipe 16. Subsequently, under the action of the thread, the protective cover 5 is rotated and threadedly installed on the threaded pipe 16, so that the bottom of the protective cover 5 tightly abuts against the top of the rubber ring 17, thereby being able to seal the threaded pipe 16. Subsequently, the explosion-proof cover 2 is rotated and closed, so that the two connecting plates 4 at the bottom of the explosion-proof cover 2 respectively enter into the two grooves 13. At this time, the gasket 14 at the bottom of the explosion-proof cover 2 will enter into the limiting groove 8 and be in close contact with the inner wall of the limiting groove 8. Subsequently, the handle on the worm 10 is rotated by hand, so that the handle drives the worm 10 to rotate. Under the action of meshing, the worm 10 will drive the worm gear 11 to rotate. The worm gear 11 will drive the two threaded rods 6 to rotate. Under the action of the thread, the two threaded rods 6 will respectively drive the two rectangular rods 7 to move away from each other, so that the mutually remote ends of the two rectangular rods 7 are respectively inserted into the two connecting plates 4. At this time, the explosion-proof cover 2 is fixed on the box body 1. Because the worm 10 and the worm gear 11 have a self-locking function, without the action of external force, the worm 10 and the worm gear 11 will not rotate. Under the action of the gasket 14, the box body 1 can be effectively sealed.

[0045] Under the action of the desiccant, the air in the box body 1 will contact the desiccant in the placement box 3 through the ventilation plate 15, so that the air in the placement box 3 can be kept in a dry state.

[0046] Embodiment 2:

[0047] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The gasket 14 is in close contact with the inner wall of the limit groove 8.

[0048] Among them, it is ensured that the gasket 14 can seal the opening of the box body 1.

[0049] Embodiment 3:

[0050] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: A rubber ring 17 is fixedly installed on the top of the box body 1 and on the periphery of the threaded pipe 16, and the top of the rubber ring 17 is in close contact with the bottom of the protective cover 5.

[0051] Among them, after the protective cover 5 is rotated and threadedly installed on the threaded pipe 16, the bottom of the protective cover 5 will closely abut against the top of the rubber ring 17, so as to be able to seal the threaded pipe 16.

[0052] Embodiment 4:

[0053] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: One end of the rectangular rod 7 is in plug-in fit with the connecting plate 4, and the connecting plate 4 and the explosion-proof cover 2 are of an integrally formed structure.

[0054] Among them, it is ensured that one end of the rectangular rod 7 can be inserted into the connecting plate 4; the structural stability between the connecting plate 4 and the explosion-proof cover 2 is ensured.

[0055] Embodiment 5:

[0056] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The threaded pipe 16 is communicated with the inner cavity of the placement box 3.

[0057] Among them, it is ensured that desiccant can be put into the placement box 3 through the threaded pipe 16.

[0058] Embodiment 6:

[0059] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: Both ends of the worm gear 11 are rotatably connected to the box body 1, and the groove 13 is communicated with the corresponding sliding groove 12.

[0060] Among them, it is ensured that the worm gear 11 can operate normally; it is ensured that one end of the rectangular rod 7 can enter and exit the connecting plate 4 located in the groove 13.

[0061] Embodiment 7:

[0062] This embodiment provides an explosion-proof junction box. In addition to including the technical solutions of the above embodiments, it also has the following technical features: both sides of the limiting groove 8 are arc-shaped structures, both sides of the sealing gasket 14 are arc-shaped structures, and the threads on the two threaded rods 6 are opposite.

[0063] Among them, when ensuring that the sealing gasket 14 is in the limiting groove 8, the explosion-proof cover 2 can be smoothly opened, avoiding the situation where the sealing gasket 14 hinders the opening of the explosion-proof cover 2; ensuring that when the two threaded rods 6 rotate, they can drive the two rectangular rods 7 to move away from or close to each other.

[0064] It is worth noting that the diameter of the mesh holes on the air-permeable plate 15 is smaller than the diameter of the desiccant particles.

[0065] Working principle: When in use, the staff rotates the protective cover 5. Under the action of the thread, the protective cover 5 will rotate and move upward until the protective cover 5 completely disengages from the threaded tube 16. At this time, desiccant can be put into the placement box 3 through the threaded tube 16. Subsequently, under the action of the thread, the protective cover 5 is rotated and threadedly installed on the threaded tube 16, so that the bottom of the protective cover 5 tightly abuts against the top of the rubber ring 17, thereby being able to seal the threaded tube 16. Then, the explosion-proof cover 2 is rotated and closed, so that the two connecting plates 4 at the bottom of the explosion-proof cover 2 respectively enter into the two grooves 13. At this time, the sealing gasket 14 at the bottom of the explosion-proof cover 2 will enter into the limiting groove 8 and be in close contact with the inner wall of the limiting groove 8. Subsequently, the handle on the worm 10 is rotated by hand, so that the handle drives the worm 10 to rotate. Under the meshing action, the worm 10 will drive the worm wheel 11 to rotate, and the worm wheel 11 will drive the two threaded rods 6 to rotate. Under the action of the thread, the two threaded rods 6 will respectively drive the two rectangular rods 7 to move away from each other, so that the ends of the two rectangular rods 7 that move away from each other are respectively inserted into the two connecting plates 4. At this time, the explosion-proof cover 2 is fixed on the box body 1. Because the worm 10 and the worm wheel 11 have a self-locking function, without external force, the worm 10 and the worm wheel 11 will not rotate. Under the action of the sealing gasket 14, the box body 1 can be effectively sealed;

[0066] Under the action of the desiccant, the air in the box body 1 will contact the desiccant in the placement box 3 through the air-permeable plate 15, so that the air in the placement box 3 can be kept dry.

[0067] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. An explosion-proof junction box, characterized in that, Including: A box body (1), on the top of the box body (1) is rotatably installed an explosion-proof cover (2), a limit groove (8) is opened in the box body (1), a sealing gasket (14) fixed to the bottom of the explosion-proof cover (2) is arranged in the limit groove (8), a placement box (3) is fixedly installed in the explosion-proof cover (2), a ventilation plate (15) is fixedly installed at the bottom of the placement box (3), a threaded pipe (16) is fixedly installed at the top of the placement box (3), and a protective cover (5) is threadedly installed on the threaded pipe (16); A power chamber (9), the power chamber (9) is opened in the box body (1) and is located on one side of the limit groove (8), sliding grooves (12) are opened on the left and right sides of the box body (1) and located in the power chamber (9), grooves (13) are opened on both sides of the box body (1), a connecting plate (4) fixed to the bottom of the explosion-proof cover (2) is arranged in the grooves (13), a threaded rod (6) is rotatably installed in the sliding grooves (12), a rectangular rod (7) is slidably installed on the threaded rod (6) in the sliding grooves (12), the rectangular rod (7) is threadedly connected with the threaded rod (6), one end of the rectangular rod (7) extends into the corresponding connecting plate (4), a worm gear (11) is rotatably installed in the power chamber (9), a worm (10) is rotatably installed at the top of the worm gear (11) in the power chamber (9), the worm (10) is meshed with the worm gear (11), one end of the worm (10) penetrates through the front side of the power chamber (9) and extends to the outside, and both ends of the worm gear (11) penetrate through the left and right sides of the power chamber (9) and are coaxially connected with the corresponding threaded rods (6).

2. An explosion-proof junction box according to claim 1, wherein, The sealing gasket (14) is in close contact with the inner wall of the limit groove (8).

3. An explosion-proof junction box according to claim 1, characterized in that, A rubber ring (17) is fixedly installed on the top of the box body (1) and around the threaded pipe (16), and the top of the rubber ring (17) is in close contact with the bottom of the protective cover (5).

4. An explosion-proof junction box according to claim 1, characterized in that, One end of the rectangular rod (7) is inserted and matched with the connecting plate (4), and the connecting plate (4) and the explosion-proof cover (2) are of an integrally formed structure.

5. An explosion-proof junction box according to claim 1, characterized in that, The threaded pipe (16) is communicated with the inner cavity of the placement box (3).

6. An explosion-proof junction box according to claim 1, characterized in that, Both ends of the worm gear (11) are rotatably connected with the box body (1), and the groove (13) is communicated with the corresponding sliding groove (12).

7. An explosion-proof junction box according to claim 1, characterized in that, Both sides of the limit groove (8) are of an arc structure, both sides of the sealing gasket (14) are of an arc structure, and the threads on the two threaded rods (6) are opposite.

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