Novel explosion-proof joint

Abstract

The utility model discloses a novel explosion-proof joint, which comprises a joint main body, an internal thread replacement assembly and an external thread replacement assembly, a channel is arranged on the inner wall of the joint main body, first internal threads are arranged on the inner walls of the two ends of the channel, the internal thread replacement assembly comprises an internal thread sleeve, and first external threads matched with the first internal threads are arranged on the outer wall of one end of the internal thread sleeve. The first internal threads are arranged on the inner walls of the two ends of the connector body channel, the first internal threads can be screwed into the internal thread sleeve or the external thread sleeve, flexible conversion of the internal thread structure and the external thread structure is achieved, using flexibility and universality are improved, cost is reduced, and the process is simplified; third internal threads on the inner wall are matched with fourth external threads on the outer wall of the internal thread sleeve and the external thread sleeve, extra fastening force is formed by rotating and screwing, relative rotation and axial displacement between components are limited, flammable and explosive gas or dust leakage is prevented, the anti-explosion performance is improved, and reliable guarantee is provided for industrial safety production.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof connector technology, and in particular to a novel explosion-proof connector. Background Technology

[0002] In industrial production, especially in hazardous environments involving flammable and explosive gases and dust, the application of explosion-proof joints is crucial. However, existing explosion-proof joints have several limitations in practical use. Firstly, most explosion-proof joints have fixed internal and external thread structures, making them inflexible for different pipeline connection requirements. Converting an internal thread connection to an external thread connection, or vice versa, often necessitates replacing the entire joint, increasing usage costs and operational complexity. Secondly, traditional explosion-proof joints lack sufficient connection stability. Under vibration, impact, or other external forces, the joint components are prone to loosening, affecting the normal operation of the pipeline system and potentially leading to leakage of flammable and explosive media, causing serious safety accidents and posing significant safety hazards.

[0003] Therefore, we propose a new type of explosion-proof connector. Utility Model Content

[0004] The main objective of this invention is to provide a novel explosion-proof connector. This invention aims to prevent increased usage costs and operational complexity caused by the fixed internal and external thread structure of explosion-proof connectors, which prevents loosening of connector components under vibration, impact, or other external forces due to insufficient connection stability of traditional explosion-proof connectors, thus avoiding leakage of flammable and explosive media and serious safety accidents. The invention improves the flexibility and versatility of explosion-proof connectors, reduces usage costs, simplifies operation procedures, enhances connection stability and sealing, and improves explosion-proof performance. This ensures the normal operation and safe production of pipeline systems, especially in hazardous environments, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel explosion-proof connector includes a connector body, an internal thread replacement assembly, and an external thread replacement assembly. The inner wall of the connector body has a channel, and both ends of the channel have a first internal thread. The internal thread replacement assembly includes an internal thread sleeve, one end of which has a first external thread adapted to the first internal thread, and the inner wall of the internal thread sleeve has a second internal thread for connection. The external thread replacement assembly includes an external thread sleeve, one end of which has a second external thread adapted to the first internal thread, and the other end of which has a third external thread for connection. Locking devices are provided at the connection points between the connector body and the internal thread sleeve and the external thread sleeve.

[0007] By adopting the above technical solution, the first internal thread on the inner wall of both ends of the connector body channel can be used to screw in the internal thread sleeve or the external thread sleeve through the matching first external thread and second external thread. The second internal thread of the internal thread sleeve and the third external thread of the external thread sleeve are used to connect the corresponding components. The locking device ensures that the connector body is firmly connected to the internal and external thread sleeves, realizing flexible conversion and reliable connection of internal and external thread structures.

[0008] Furthermore, the locking device includes a locking ring sleeved on the outer wall of the connector body, the outer wall of the connector body having a limiting groove, and the inner side wall of the locking ring being rotatably connected to the limiting groove.

[0009] By adopting the above technical solution, the limiting groove extends axially along the outer wall of the connector body, covering the first internal thread installation area at both ends of the channel. The locking ring is sleeved on the outer wall of the connector body. The locking ring can slide along the limiting groove to the installation position of either end of the sleeve. The initial state of the locking ring is located on the first internal thread installation area. When installing the internal and external thread sleeves, first screw the sleeve into the first internal thread at one end, and then move the locking ring to the fourth external thread area on the outer wall of the sleeve. Locking is achieved by screwing in the third internal thread, which restricts the relative rotation and axial displacement between the connector body and the internal and external thread sleeves, thus playing a role in fastening and preventing loosening, and ensuring the stable connection of the explosion-proof connector.

[0010] Furthermore, both the inner threaded sleeve and the outer threaded sleeve are provided with a fourth external thread on their outer walls, and the inner wall of the locking ring is provided with a third internal thread that is adapted to the fourth external thread.

[0011] By adopting the above technical solution, when it is necessary to install an internal or external threaded sleeve onto the connector body, first screw the end of the internal or external threaded sleeve with the first or second external thread into the first internal thread on the inner wall of both ends of the connector body channel to complete the initial connection. At this time, the internal or external threaded sleeve and the connector body achieve basic assembly through threaded engagement. However, this connection may be at risk of loosening under external forces such as vibration and impact. The locking ring is pre-fitted onto the outer wall of the connector body, and its inner side wall rotates with the limiting groove opened on the outer wall of the connector body. After completing the initial connection between the internal or external threaded sleeve and the connector body, the locking ring is slid along the limiting groove to the installation position of the internal or external threaded sleeve. Since the outer walls of both the internal and external threaded sleeves are provided with a fourth external thread, and the inner wall of the locking ring is provided with a third internal thread that matches the fourth external thread, when the locking ring slides... Once in the correct position, the locking ring is rotated to engage the third internal thread on its inner wall with the fourth external thread on the outer wall of the internal or external threaded sleeve. As rotation continues, the locking ring gradually tightens, creating an additional clamping force between the connector body and the internal or external threaded sleeve. This threaded connection effectively restricts the rotation and axial movement of the internal or external threaded sleeve relative to the connector body. Even under vibration, impact, or other external forces, the connection remains secure, ensuring the structural stability of the explosion-proof connector. In explosion-proof environments, the connection stability of the connector is crucial. A reliable connection prevents flammable and explosive gases or dust from leaking through gaps in the connector, thus reducing the risk of explosion. This locking device, by providing additional clamping force, enhances the sealing performance of the connector and further improves its explosion-proof performance.

[0012] Furthermore, the locking ring has anti-slip ridges on its exterior.

[0013] By adopting the above technical solution, the main function of the anti-slip ridges is to increase friction. When the operator needs to rotate the locking ring to lock or unlock the internal or external threaded sleeve, the hand is in direct contact with the locking ring. Due to the presence of the anti-slip ridges, the friction between the hand and the locking ring increases. Under normal circumstances, if the surface of the locking ring is smooth, the hand may slip due to insufficient friction during rotation. The anti-slip ridges are like tiny obstacles. When the hand applies rotational force, these ridges can better "grip" the skin of the hand or the operating tool such as a wrench, allowing the operator to transmit rotational torque more stably and effectively, thereby conveniently and accurately tightening or loosening the locking ring.

[0014] From the perspective of ease of operation, anti-slip texture can improve operational efficiency. During the installation and maintenance of explosion-proof connectors, it is necessary to quickly and accurately perform the locking ring operation. Anti-slip texture can reduce operational errors, such as the locking ring not being tightened properly due to slippage or being over-tightened and damaging the parts.

[0015] From a safety perspective, in hazardous environments where flammable or explosive gases or liquids may be present, the accuracy and stability of operation are crucial. If the locking ring is not installed correctly due to poor anti-slip performance, it may affect the sealing and tightening effect of the joint, thereby causing a safety accident. The presence of anti-slip ridges helps to ensure that the locking ring is operated correctly, thus ensuring the safety performance of the entire explosion-proof joint.

[0016] Furthermore, sealing gaskets are provided at the connection points between the connector body and the inner threaded sleeve and the outer threaded sleeve.

[0017] By adopting the above technical solution, the sealing gasket is placed at the connection between the joint body and the internal threaded sleeve or the external threaded sleeve. When the internal threaded sleeve or the external threaded sleeve is installed on the joint body through the threaded connection, the sealing gasket will be subjected to axial pressure. This pressure will cause the sealing gasket to undergo elastic deformation and fill the tiny gaps in the connection. For example, at the threaded connection, there may be some small gaps due to processing precision and other reasons. After being squeezed, the sealing gasket can fit tightly around these gaps, thereby preventing external flammable and explosive gases, liquids or dust from entering the interior of the joint.

[0018] In explosion-proof environments, preventing the leakage of hazardous media is crucial. Sealing gaskets act as a barrier, isolating the internal space of the joint from the external environment. Whether under normal operating conditions or when the joint is subjected to a certain degree of vibration or temperature changes, the elasticity of the sealing gasket can maintain the sealing effect on the connection gap. For example, when the temperature rises, the joint components may undergo thermal expansion, and the sealing gasket can adapt to this expansion through its own elastic deformation, still ensuring a good seal and avoiding safety accidents such as explosions caused by leakage.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) This utility model discloses a novel explosion-proof connector. Through a unique structural design, it achieves flexible conversion between internal and external thread structures. The inner walls at both ends of the connector's main channel are provided with a first internal thread. An internal thread or an external thread sleeve can be screwed into the connector through the matching first external thread and second external thread, respectively. The second internal thread of the internal thread sleeve and the third external thread of the external thread sleeve can connect corresponding components. This design allows the same connector to be quickly switched to internal or external thread connection modes according to actual pipeline connection requirements without replacing the entire connector. This greatly improves the flexibility and versatility of the connector, reduces usage costs, simplifies the operation process, and meets diverse industrial connection needs.

[0021] (2) This utility model provides a novel explosion-proof connector with a locking device that effectively ensures the stability and sealing of the connection. The locking ring is sleeved on the outer wall of the connector body, and its inner side wall is rotatably engaged with the limiting groove on the outer wall of the connector body. The outer walls of the inner threaded sleeve and the outer threaded sleeve are provided with a fourth external thread, which is adapted to the third internal thread on the inner wall of the locking ring. After the initial threaded connection is completed, the locking ring is rotated to screw it into the inner threaded sleeve or the outer threaded sleeve, forming an additional fastening force, which restricts the relative rotation and axial displacement between the components. Even under harsh working conditions such as vibration and impact, the connection will not loosen, effectively preventing flammable and explosive gases or dust from leaking through the joint gaps, significantly improving the explosion-proof performance of the explosion-proof connector, and providing a reliable guarantee for industrial safety production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure between the connector body and the internal thread replacement component of a novel explosion-proof connector according to this utility model.

[0023] Figure 2 This is a schematic diagram of the connection structure between the connector body and the external thread replacement component of a novel explosion-proof connector according to this utility model.

[0024] Figure 3 This is a schematic diagram of the internal structure of the connector body and the internal thread replacement assembly of a novel explosion-proof connector according to this utility model.

[0025] Figure 4 This utility model relates to a novel explosion-proof connector. Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 This is a schematic diagram of the internal structure of the connector body and the external thread replacement component of a novel explosion-proof connector according to this utility model.

[0027] In the diagram: 1. Connector body; 2. Internal threaded sleeve; 3. External threaded sleeve; 4. Channel; 5. First internal thread; 6. First external thread; 7. Second internal thread; 8. Second external thread; 9. Third external thread; 10. Sealing gasket; 11. Locking ring; 12. Third internal thread; 13. Fourth external thread; 14. Limiting groove; 15. Anti-slip ridge. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] To prevent increased usage costs and operational complexity caused by the fixed internal and external thread structure of explosion-proof joints, and to prevent leaks of flammable and explosive media and serious safety accidents caused by loosening of joint components under vibration, impact, or other external forces due to insufficient connection stability of traditional explosion-proof joints, thereby improving the flexibility and versatility of explosion-proof joints, reducing usage costs, simplifying operation procedures, enhancing connection stability and sealing, improving explosion-proof performance, and ensuring the normal operation and safe production of pipeline systems in industrial production, especially in hazardous environments, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a novel explosion-proof connector includes a connector body 1, an internal thread replacement assembly, and an external thread replacement assembly. The inner wall of the connector body 1 is provided with a channel 4, and both ends of the channel 4 are provided with a first internal thread 5. The internal thread replacement assembly includes an internal thread sleeve 2, one end of which is provided with a first external thread 6 that matches the first internal thread 5, and the inner wall of the internal thread sleeve 2 is provided with a second internal thread 7 for connection. The external thread replacement assembly includes an external thread sleeve 3, one end of which is provided with a second external thread 8 that matches the first internal thread 5, and the other end of which is provided with a third external thread 9 for connection. Locking devices are provided at the connection points between the connector body 1 and the internal thread sleeve 2 and the external thread sleeve 3.

[0030] In use, the first internal thread 5 on the inner wall of the two ends of the channel 4 of the connector body 1 can be used to screw in the internal thread sleeve 2 or the external thread sleeve 3 through the matching first external thread 6 and second external thread 8. The second internal thread 7 of the internal thread sleeve 2 and the third external thread 9 of the external thread sleeve 3 are used to connect the corresponding parts. The locking device ensures that the connector body 1 is firmly connected to the internal and external thread sleeves.

[0031] For example, such as Figure 1 , Figure 2 , Figure 4As shown, the present invention also includes a locking device comprising a locking ring 11 sleeved on the outer wall of the connector body 1, a limiting groove 14 formed on the outer wall of the connector body 1, and the inner side wall of the locking ring 11 being rotatably connected to the limiting groove 14.

[0032] In use, the limiting groove 14 extends axially along the outer wall of the connector body 1, covering the installation area of ​​the first internal thread 5 at both ends of the channel 4. The locking ring 11 is sleeved on the outer wall of the connector body 1. The locking ring 11 can slide along the limiting groove 14 to the installation position of either end of the sleeve. The locking ring 11 is initially located in the installation area of ​​the first internal thread 5. When installing the internal and external thread sleeves, first screw the sleeve into the first internal thread 5 at one end, and then move the locking ring 11 to the area of ​​the fourth external thread 13 on the outer wall of the sleeve. It is locked by screwing in the third internal thread 12, which restricts the relative rotation and axial displacement between the connector body 1 and the internal and external thread sleeves, and plays a role in fastening and preventing loosening, ensuring that the explosion-proof connector is firmly connected.

[0033] For example, such as Figure 4 As shown, the present invention also includes a fourth external thread 13 on the outer wall of both the inner thread sleeve 2 and the outer thread sleeve 3, and a third internal thread 12 on the inner wall of the locking ring 11 that is adapted to the fourth external thread 13.

[0034] When using the connector, if the internal threaded sleeve 2 or the external threaded sleeve 3 needs to be installed onto the connector body 1, first screw the end of the internal threaded sleeve 2 or the external threaded sleeve 3 with the first external thread 6 or the second external thread 8 into the first internal thread 5 on the inner wall of both ends of the channel 4 of the connector body 1 to complete the initial connection. At this time, the internal threaded sleeve 2 or the external threaded sleeve 3 and the connector body 1 achieve basic assembly through threaded engagement. However, this connection may be at risk of loosening under external forces such as vibration and impact. The locking ring 11 is used to address this. The inner sleeve 2 or outer sleeve 3 is pre-fitted onto the outer wall of the connector body 1, and its inner side wall is rotatably engaged with the limiting groove 14 opened on the outer wall of the connector body 1. After the initial connection between the inner threaded sleeve 2 or outer threaded sleeve 3 and the connector body 1 is completed, the locking ring 11 is slid along the limiting groove 14 to the installation position of the inner threaded sleeve 2 or outer threaded sleeve 3. Since the outer walls of both the inner threaded sleeve 2 and the outer threaded sleeve 3 are provided with a fourth external thread 13, and the inner wall of the locking ring 11 is provided with a third internal thread 12 that is adapted to the fourth external thread 13, when the locking ring 11 is engaged... After the locking ring 11 slides to the appropriate position, by rotating the locking ring 11, the third internal thread 12 on its inner wall engages with the fourth external thread 13 on the outer wall of the internal threaded sleeve 2 or the external threaded sleeve 3. As the rotation proceeds, the locking ring 11 gradually tightens, thereby forming an additional fastening force between the connector body 1 and the internal threaded sleeve 2 or the external threaded sleeve 3. Through the threaded connection between the locking ring 11 and the internal threaded sleeve 2 or the external threaded sleeve 3, the rotation and axial movement of the internal threaded sleeve 2 or the external threaded sleeve 3 relative to the connector body 1 are effectively restricted. Even when subjected to external forces such as vibration and impact, the connection will not loosen, ensuring the structural stability of the explosion-proof connector. In an explosion-proof environment, the connection stability of the connector is crucial. A reliable connection can prevent flammable and explosive gases or dust from leaking through the gaps in the connector, thereby reducing the risk of explosion. This locking device enhances the sealing performance of the connector by providing additional fastening force, further improving the explosion-proof performance of the explosion-proof connector.

[0035] For example, such as Figure 1 , Figure 2 , Figure 4 As shown, the present invention also includes an anti-slip texture 15 on the outside of the locking ring 11.

[0036] In use, the main function of the anti-slip ridges 15 is to increase friction. When the operator needs to rotate the locking ring 11 to lock or unlock the inner thread sleeve 2 or the outer thread sleeve 3, the hand is in direct contact with the locking ring 11. Due to the presence of the anti-slip ridges 15, the friction between the hand and the locking ring 11 is increased. Under normal circumstances, if the surface of the locking ring 11 is smooth, the hand may slip due to insufficient friction during rotation. The anti-slip ridges 15 are like tiny obstacles. When the hand applies rotational force, these ridges can better "grip" the skin of the hand or the operating tool such as a wrench, allowing the operator to transmit rotational torque more stably and effectively, thereby conveniently and accurately tightening or loosening the locking ring 11.

[0037] From the perspective of ease of operation, the anti-slip texture 15 can improve the efficiency of operation. During the installation and maintenance of explosion-proof connectors, it is necessary to quickly and accurately operate the locking ring 11. The anti-slip texture 15 can reduce operational errors, such as the locking ring 11 not being tightened properly due to slippage or being over-tightened and damaging the parts.

[0038] From a safety perspective, in hazardous environments where flammable or explosive gases or liquids may be present, the accuracy and stability of operation are crucial. If the locking ring 11 is not installed correctly due to poor anti-slip performance, it may affect the sealing and tightening effect of the joint, thereby causing a safety accident. The presence of the anti-slip ridges 15 helps to ensure that the locking ring 11 is operated correctly, thereby ensuring the safety performance of the entire explosion-proof joint.

[0039] For example, such as Figure 4 As shown, the present invention also includes sealing gaskets 10 at the connection points between the connector body 1 and the inner threaded sleeve 2 and the outer threaded sleeve 3.

[0040] When in use, the sealing gasket 10 is placed at the connection between the connector body 1 and the inner threaded sleeve 2 or the outer threaded sleeve 3. When the inner threaded sleeve 2 or the outer threaded sleeve 3 is installed on the connector body 1 through a threaded connection, the sealing gasket 10 will be subjected to axial pressure. This pressure will cause the sealing gasket 10 to undergo elastic deformation and fill the tiny gaps in the connection. For example, at the threaded connection, there may be some small gaps due to machining precision and other reasons. After being squeezed, the sealing gasket 10 can fit tightly around these gaps, thereby preventing external flammable and explosive gases, liquids or dust from entering the interior of the connector.

[0041] In explosion-proof environments, preventing the leakage of hazardous media is crucial. The sealing gasket 10 acts as a barrier, isolating the internal space of the joint from the external environment. Whether under normal operating conditions or when the joint is subjected to a certain degree of vibration or temperature changes, the elasticity of the sealing gasket 10 can maintain the sealing effect on the connection gap. For example, when the temperature rises, the joint components may undergo thermal expansion, and the sealing gasket 10 can adapt to this expansion through its own elastic deformation, still ensuring a good seal and avoiding safety accidents such as explosions caused by leakage.

[0042] It should be noted that this utility model is a new type of explosion-proof connector. By utilizing the first internal thread 5 on the inner wall of both ends of the channel 4 of the connector body 1, and through the matching first external thread 6 and second external thread 8, one end of the internal thread sleeve 2 or the external thread sleeve 3 with the first external thread 6 or the second external thread 8 is screwed into the first internal thread 5 on the inner wall of both ends of the channel 4 of the connector body 1, and the initial connection is completed.

[0043] The inner wall of the locking ring 11 is rotatably engaged with the limiting groove 14 on the outer wall of the connector body 1. After the initial connection between the inner threaded sleeve 2 or the outer threaded sleeve 3 and the connector body 1 is completed, the locking ring 11 is slid along the limiting groove 14 to the installation position of the inner threaded sleeve 2 or the outer threaded sleeve 3. Since the outer walls of the inner threaded sleeve 2 and the outer threaded sleeve 3 are provided with a fourth external thread 13, the inner wall of the locking ring 11 is provided with a third internal thread 12 that is compatible with the fourth external thread 13. When the locking ring 11 is slid to the appropriate position, the locking ring 11 is rotated so that the third internal thread 12 on its inner wall is engaged with the fourth external thread 13 on the outer wall of the inner threaded sleeve 2 or the outer threaded sleeve 3, and the locking ring 11 is tightened. The operator can increase the friction by using the anti-slip ridges 15 on the outside of the locking ring 11 to tighten the locking ring 11 stably and accurately.

[0044] A sealing gasket 10 is placed at the connection between the connector body 1 and the inner threaded sleeve 2 or the outer threaded sleeve 3. When the inner threaded sleeve 2 or the outer threaded sleeve 3 is installed on the connector body 1 through a threaded connection, the sealing gasket 10 undergoes elastic deformation under axial pressure, filling the tiny gaps in the connection and achieving a seal.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A new explosion-proof joint comprising a joint body (1), an internal thread replacement assembly and an external thread replacement assembly, characterized in that, The inner wall of the connector body (1) is provided with a channel (4), and the inner walls at both ends of the channel (4) are provided with a first internal thread (5). The internal thread replacement assembly includes an internal thread sleeve (2). The outer wall of one end of the internal thread sleeve (2) is provided with a first external thread (6) that is adapted to the first internal thread (5). The inner wall of the internal thread sleeve (2) is provided with a second internal thread (7) for connection. The external thread replacement assembly includes an external thread sleeve (3). The outer wall of one end of the external thread sleeve (3) is provided with a second external thread (8) that is adapted to the first internal thread (5). The outer wall of the other end of the external thread sleeve (3) is provided with a third external thread (9) for connection. The connection between the connector body (1) and the internal thread sleeve (2) and the external thread sleeve (3) is provided with a locking device.

2. A new type of explosion-proof joint according to claim 1, characterized in that: The locking device includes a locking ring (11) sleeved on the outer wall of the connector body (1), and a limiting groove (14) is provided on the outer wall of the connector body (1). The inner side wall of the locking ring (11) is rotatably connected to the limiting groove (14).

3. A new type of explosion-proof joint according to claim 2, characterized in that: The outer walls of both the inner threaded sleeve (2) and the outer threaded sleeve (3) are provided with a fourth external thread (13), and the inner wall of the locking ring (11) is provided with a third internal thread (12) that is adapted to the fourth external thread (13).

4. A new type of explosion-proof joint according to claim 2, characterized in that: The locking ring (11) has anti-slip ridges (15) on its outside.

5. A new type of explosion-proof joint according to claim 1, characterized in that: Sealing gaskets (10) are provided at the connection points between the connector body (1) and the inner thread sleeve (2) and the outer thread sleeve (3).

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