A clamping explosion-proof connector

Abstract

This utility model provides a clamping explosion-proof connector, relating to the field of explosion-proof connectors, comprising: a screw connector, one end of which is connected to a nut, and the inner side of the nut is provided with a locking ring, a locking element, and a sealing element from right to left. The nut also has a first limiting ring inside, and a second limiting ring is provided at the left end of the locking ring, with a protruding ring on the outer side of the second limiting ring. The sealing element includes wear-resistant layers on both sides, a sealing layer inside the wear-resistant layers, and a buffer ball between the sealing layers. A through hole is formed in the center of the sealing element, and the inner wall of the through hole is provided with an anti-corrosion layer. The locking element includes an outer limiting end, and a screw end is connected to the right end of the outer limiting end. This utility model features high connection stability, long component service life, and the ability to be repeatedly disassembled and used.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof connector technology, specifically to a clamping explosion-proof connector. Background Technology

[0002] An explosion-proof connector is a connection device specifically designed for use in explosive environments. Its core function is to prevent explosions caused by electrical sparks or leakage of the working medium through special design and material selection, while ensuring sealing and structural reliability. A search of existing technology (publication number: CN212273318U) describes "a quick explosion-proof connector, comprising a pipe, with a flat hexagonal nut and a medium hexagonal nut respectively installed on the left and right sides of the pipe, and a nut installed on the outer side of each flat hexagonal nut and medium hexagonal nut. An inner liner ring is provided at the contact point between the inner wall of the flat hexagonal nut and the pipe. This utility model has a simple and reasonable structure. The addition of the inner liner ring design makes installation easier. During fixing, the inner liner ring is pressed into the grooves of the flat hexagonal nut and medium hexagonal nut, locking the pipe with the inner liner ring, resulting in a stronger locking effect and meeting the required pipe quality requirements."

[0003] The explosion-proof connectors mentioned in the aforementioned patent documents are locked together by an inner liner ring. When the inner liner ring is squeezed by the hexagonal nut, it will deform to a certain extent, making it difficult to connect the flexible tube opening when disassembled and reused, resulting in the inability to reuse the connector. Secondly, the rubber sealing rings used in existing explosion-proof connectors have poor corrosion resistance and wear resistance, and are prone to deformation when under long-term compression, leading to a gradual deterioration of the sealing effect. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a clamping explosion-proof connector is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a clamping explosion-proof connector is provided, comprising: a screw connector, one end of which is connected to a nut, and the inner side of the nut is provided with a locking ring, a locking element, and a sealing element from right to left. The nut also has a first limiting ring inside, a second limiting ring at the left end of the locking ring, and a protruding ring on the outer side of the second limiting ring. The sealing element includes wear-resistant layers on both sides, a sealing layer inside the wear-resistant layers, and a buffer ball between the sealing layers. A through hole is formed in the center of the sealing element, and the inner wall of the through hole is provided with an anti-corrosion layer. The locking element includes an outer limiting end, and a screw end is connected to the right end of the outer limiting end.

[0006] Furthermore, the screw connector includes an internal threaded ring at the left end and an external threaded ring connected at the right end, wherein the outer diameter of the external threaded ring is smaller than that of the internal threaded ring, and the external threaded ring is screwed into the nut.

[0007] Furthermore, the first limiting ring is located on the inner wall of the right end of the nut, and the first limiting ring is matched and inserted with the locking ring. At the same time, the left end protrusion of the locking ring is engaged with the left end of the first limiting ring.

[0008] Furthermore, the locking member has an inner hole, and the outer diameter of the outer limiting end is consistent with the outer diameter of the convex ring of the locking ring.

[0009] Furthermore, the outer wall of the screw end is provided with external threads, and the screw end is matched and connected with the internal threads of the flexible tube connection end. The flexible tube is inserted into the locking ring, and the connection end of the flexible tube is engaged with the right end of the second limiting ring.

[0010] Furthermore, the seal is located at the left end of the outer limiting end, and the right side of the seal maintains pressure contact with the external threaded ring.

[0011] Furthermore, the wear-resistant layer is made of polyurethane, the anti-corrosion layer is an anti-corrosion coating, and the buffer ball is made of silicone.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. During connection, the threaded end of the flexible tube passes through the nut and is then inserted into the locking ring. At this time, the connection end of the flexible tube is blocked by the second limiting ring. Then, the locking member is rotated and screwed from the connection end of the flexible tube until the outer limiting end contacts the convex ring on the left end of the locking ring. Then, the nut is moved to the left so that the first limiting ring contacts the right side of the convex ring. At this time, the sealing ring is placed inside the nut and contacts the outer limiting end. Then, the external threaded ring of the screw connector is screwed from the left end of the nut until it is pressed against the sealing member, thereby achieving the clamping connection of the end of the flexible tube.

[0014] 2. By using the locking ring, the second limiting ring, and the locking component, the screw connection between the locking component and the flexible tube creates a leftward pulling effect. Through the connection between the screw head and the nut component, and the limiting and blocking effect of the first limiting ring and the locking ring, the locking ring is fixed in the nut component. At this time, the flexible tube connection end is simultaneously blocked by the second limiting ring, thereby achieving the clamping effect on the flexible tube, and also has the effect of repeated disassembly and reuse.

[0015] 3. The anti-corrosion layer included in the seal reduces the corrosive effect of the medium flowing through the through hole on the seal. The wear-resistant layers on both sides of the seal provide wear resistance when rotated and squeezed, preventing the seal from deforming too quickly. At the same time, the internal buffer ball provides a compression buffer effect, thus protecting the sealing layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic cross-sectional view of the screw connector according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the sealing element according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the nut component according to an embodiment of the present utility model.

[0020] In the diagram: 1. Screw connector; 11. Internal threaded ring; 12. External threaded ring; 2. Nut; 21. First limiting ring; 3. Locking ring; 31. Second limiting ring; 4. Seal; 41. Wear-resistant layer; 42. Sealing layer; 43. Anti-corrosion layer; 44. Buffer ball; 45. Through hole; 5. Locking element; 51. Outer limiting end; 52. Screw connection end. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 4 As shown, this utility model provides a clamping explosion-proof connector, including: a screw connector 1, one end of which is connected to a nut 2, and the inner side of the nut 2 is provided with a locking ring 3, a locking element 5 and a sealing element 4 from right to left. At the same time, the nut 2 is provided with a first limiting ring 21 inside, and the left end of the locking ring 3 is provided with a second limiting ring 31, and the outer side of the second limiting ring 31 is provided with a convex ring. The sealing element 4 includes wear-resistant layers 41 on both sides, a sealing layer 42 is provided inside the wear-resistant layers 41, and a buffer ball 44 is provided between the sealing layers 42. At the same time, a through hole 45 is opened in the center of the sealing element 4, and the inner wall of the through hole 45 is provided with an anti-corrosion layer 43. The locking element 5 includes an outer limiting end 51, and the right end of the outer limiting end 51 is connected to a screw end 52.

[0023] In this embodiment, the screw connector 1, nut 2, locking ring 3, sealing element 4, and locking element 5 constitute the main structure of the clamping explosion-proof connector involved in this application, wherein the screw connector 1, nut 2, locking ring 3, and locking element 5 are all made of copper alloy explosion-proof material.

[0024] It should be noted that the clamping explosion-proof connector involved in this application is used for pipe opening connection of flexible pipes or other braided hoses, wherein a screw connector is pre-installed inside the pipe opening and is fitted to the inner wall of the pipe opening by means of embedding or bonding to achieve a locking connection with the screw end 52.

[0025] Specifically, when the locking ring 3 is connected to the nut 2, part of the locking ring 3 is located outside the nut 2, thus providing extended protection for the connection point between the flexible tube and the nut 2.

[0026] like Figures 2 to 4 In the screw connector 1, there is an internal threaded ring 11 at the left end and an external threaded ring 12 connected at the right end. The outer diameter of the external threaded ring 12 is smaller than that of the internal threaded ring 11, and the external threaded ring 12 is screwed into the nut 2. The first limiting ring 21 is located on the inner wall of the right end of the nut 2, and the first limiting ring 21 is inserted into the locking ring 3. At the same time, the left end protruding ring of the locking ring 3 is engaged with the left end of the first limiting ring 21. The locking member 5 has an internal hole, and the outer diameter of the outer limiting end 51 is the same as that of the locking ring 3. The outer diameter of the convex ring is consistent with that of the threaded end 52. The outer wall of the threaded end 52 is provided with external thread, and the threaded end 52 is matched and connected with the internal thread of the flexible tube connection end. The flexible tube is inserted into the locking ring 3. At the same time, the connection end of the flexible tube is locked at the right end of the second limiting ring 31. The sealing element 4 is located at the left end of the outer limiting end 51, and the right side of the sealing element 4 is in pressure contact with the external thread ring 12. The wear-resistant layer 41 is made of polyurethane, the anti-corrosion layer 43 is an anti-corrosion coating, and the buffer ball 44 is made of silicone.

[0027] Specifically, the second limiting ring 31 and the convex ring are designed as an integral structure with the same thickness.

[0028] Specifically, the outer diameter of the seal 4 matches the inner diameter of the nut 2.

[0029] Specifically, multiple buffer balls 44 are provided and gaps are provided between them. The buffer balls 44 can be solid balls or hollow ball structures.

[0030] In another embodiment, the buffer ball 44 may also be provided with a ring structure of the same size as the sealing element 4, and the ring is made of silicone material, and the ring is sandwiched between the inner sealing layers 42.

[0031] In use, the threaded end of the flexible tube passes through the nut and is then inserted into the locking ring. At this point, the connecting end of the flexible tube is blocked by the second limiting ring. The locking element is then used to rotate and screw the flexible tube from its connecting end until the outer limiting end contacts the convex ring on the left side of the locking ring. The nut is then moved to the left until the first limiting ring contacts the right side of the convex ring. The sealing ring is then placed inside the nut and contacts the outer limiting end. Finally, the threaded ring of the screw connector is used to screw the nut from its left end until it is pressed tightly against the sealing element, thus achieving a clamping connection at the end of the flexible tube. This utilizes the locking ring, the second limiting ring, and the locking element. This causes the screw connection between the locking element and the flexible tube to have a leftward pulling effect. Through the connection between the screw head and the nut, and the limiting and blocking action of the first limiting ring and the locking ring, the locking ring is fixed in the nut. At this time, the flexible tube connection end is simultaneously blocked by the second limiting ring, thus achieving a clamping effect on the flexible tube. The anti-corrosion layer included in the seal reduces the corrosive effect of the medium flowing through the through-hole on the seal. The wear-resistant layers on both sides of the seal provide wear resistance when rotated and squeezed, preventing the seal from deforming too quickly. Simultaneously, the internal buffer ball provides a compression buffer effect, thus protecting the sealing layer.

[0032] The clamping explosion-proof connector of this utility model can effectively solve the problems mentioned in the background technology, and achieves high connection stability, long service life of parts, and repeated disassembly and use on the basis of existing clamping explosion-proof connector technology.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamp-type explosion-proof joint comprising: A screw connector (1) is characterized in that: one end of the screw connector (1) is connected to a nut (2), and the inner side of the nut (2) is provided with a locking ring (3), a locking member (5) and a sealing member (4) from right to left. At the same time, the nut (2) is provided with a first limiting ring (21) inside. The left end of the locking ring (3) is provided with a second limiting ring (31), and the outer side of the second limiting ring (31) is provided with a convex ring. The sealing member (4) includes wear-resistant layers (41) on both sides. The inner side of the wear-resistant layer (41) is provided with a sealing layer (42). A buffer ball (44) is provided between the sealing layers (42). At the same time, a through hole (45) is opened in the center of the sealing member (4), and the inner wall of the through hole (45) is provided with an anti-corrosion layer (43). The locking member (5) includes an outer limiting end (51), and the right end of the outer limiting end (51) is connected to a screw end (52).

2. A clamp-type explosion-proof joint according to claim 1, characterized in that The screw connector (1) includes an internal threaded ring (11) at the left end and an external threaded ring (12) connected at the right end. The outer diameter of the external threaded ring (12) is smaller than that of the internal threaded ring (11), and the external threaded ring (12) is screwed into the nut (2).

3. The clamping explosion-proof connector according to claim 1, characterized in that, The first limiting ring (21) is located on the inner wall of the right end of the nut (2), and the first limiting ring (21) is matched and inserted with the locking ring (3). At the same time, the left end protrusion of the locking ring (3) is engaged with the left end of the first limiting ring (21).

4. The clamping explosion-proof connector according to claim 1, characterized in that, The locking member (5) has an inner hole, and the outer diameter of the outer limiting end (51) is consistent with the outer diameter of the convex ring of the locking ring (3).

5. A clamping explosion-proof connector according to claim 1, characterized in that, The outer wall of the screw end (52) is provided with external threads, and the screw end (52) is matched with the internal threads of the flexible tube connection end. The flexible tube is inserted into the locking ring (3), and the connection end of the flexible tube is engaged with the right end of the second limiting ring (31).

6. A clamping explosion-proof connector according to claim 1, characterized in that, The sealing element (4) is located at the left end of the outer limiting end (51), and the right side of the sealing element (4) is in pressure contact with the external threaded ring (12).

7. A clamping explosion-proof connector according to claim 1, characterized in that, The wear-resistant layer (41) is made of polyurethane, the anti-corrosion layer (43) is an anti-corrosion coating, and the buffer ball (44) is made of silicone.

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