Corrosion-resistant and high-temperature-resistant PTFE elbow bead feeding structure for specific joint

Abstract

The utility model relates to the technical field of PTFE elbows, in particular to a corrosion-resistant and high-temperature-resistant PTFE elbow bead entering structure for a specific connector, and aims to solve the problem that hose sealing and cap falling prevention are difficult to achieve at the same time. The structure comprises an elbow body with threaded grooves at two ends, a cap in threaded connection and an internal bead inlet body. A conical clamping sleeve and a sealing gasket are arranged in the cap, and the hose is pressed to form sealing when the cap is screwed. The inlet end of the elbow is sleeved with an annular frame with a clamping frame, and the annular frame is locked with the auxiliary nut through a limiting block. After the cap is tightened, the clamping frame is clamped into the clamping groove of the cap to achieve falling prevention. According to the scheme, the conical clamping sleeve is clamped and matched with the ring frame, so that the cap is prevented from loosening while the sealing performance of the hose is ensured, and the connection reliability in a high-temperature corrosion environment is improved.

Description

Technical Field

[0001] This utility model relates to the field of PTFE elbow technology, and in particular to a PTFE elbow bead insertion structure for a specific joint that is resistant to corrosion and high temperature. Background Technology

[0002] PTFE elbows are pipe connection components made of polytetrafluoroethylene (PTFE). PTFE material has extremely strong chemical stability and can withstand the erosion of most strong acids, strong alkalis, organic solvents and other corrosive media. It can also be used for a long time in a temperature range of -200℃ to 260℃. Therefore, PTFE elbows are suitable for pipe systems with high requirements for corrosion resistance and high temperature resistance.

[0003] Currently, existing PTFE elbows for corrosion-resistant and high-temperature specific joints typically only have basic connection functions. Although they can cope with a certain degree of corrosion resistance and high-temperature environment, they cannot simultaneously ensure the tight sealing of the hose and the stable locking of the cap. This leads to potential leakage risks at the connection points, and the cap is prone to loosening and falling off under complex working conditions, affecting the stability and safety of the overall structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that cannot simultaneously ensure a tight seal of the hose and a secure locking of the cap, leading to potential leaks and cap detachment at the connection point, thus affecting the overall structural stability and safety. The invention proposes a corrosion-resistant and high-temperature resistant PTFE elbow bead insertion structure for a specific connector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A specific PTFE elbow bead-insertion structure for corrosion-resistant and high-temperature-resistant joints includes:

[0007] The elbow body has threaded grooves on the outside of both inlet ends, and caps are threadedly connected to the outside of the two threaded grooves. Both ends of the elbow body have ball-inserting bodies inside.

[0008] The cap has a locking mechanism inside, which is used to fix and seal the connected hose. Both ends of the elbow body are provided with anti-detachment parts, which are used to limit the position of the installed cap.

[0009] In one possible design, the locking mechanism includes a conical sleeve fixedly disposed on the inner ring of the cap, wherein the outer ring of the conical end of the conical sleeve is smaller than the inner diameter of the inlet end of the elbow body, a sealing gasket is embedded in the inner ring of the conical end of the conical sleeve, and the inner diameter of the conical end of the conical sleeve is larger than the outer diameter of the bead insert body.

[0010] In one possible design, the anti-detachment part includes a ring frame sleeved on the outside of the two inlet ends of the elbow body. The front side of the ring frame is fixedly provided with four clips in a ring shape. The cap is provided with a slot near the outer ring of the ring frame. The clips are adapted to the slots and can be disengaged and engaged.

[0011] In one possible design, the inner ring of the ring frame is fixedly provided with four limiting blocks in a ring shape. The two inlet ends of the elbow body are both fixedly provided with auxiliary nuts on the rear side of the threaded groove. The auxiliary nuts are provided with limiting grooves on the side near the ring frame that correspond to the number of limiting blocks. The limiting blocks can be locked in the limiting grooves.

[0012] In one possible design, the inner rings of both inlet ends of the elbow body are fixedly provided with steps, and the rear sides of the two ball bearing bodies abut against the two steps respectively when placed at the two inlet ends of the elbow body.

[0013] In one possible design, both caps have a plurality of evenly distributed anti-slip protrusions fixedly arranged on their outer rings.

[0014] In this application, upon initial use, the ring frame is first fitted onto the outside of the two inlet ends of the elbow body, ensuring that the four limiting blocks on the inner ring of the ring frame are aligned with the limiting grooves on the auxiliary nuts located behind the threaded grooves on the outside of the two inlet ends of the elbow body. Then, the ring frame is locked and secured in the limiting grooves by the limiting blocks, completing the installation of the ring frame. Subsequently, the two caps are fitted onto the hoses to be connected, and one end of each hose is heated. When heated to a suitable temperature, the insert bead body is inserted into the heated end of the hose, achieving an interference fit between one end of the hose and the insert bead body. Then, the other ends of the insert bead bodies of the two connecting hoses are inserted into the two ends of the elbow body, so that the rear side of the insert bead body abuts against the steps fixed to the inner ring of the two inlet ends of the elbow body, ensuring that the insert bead body is installed in place.

[0015] Then connect the inner thread of the cap to the threaded groove of the elbow body. During the connection process, pay attention to the position of the hose and ensure that the hose is correctly wrapped between the cap and the elbow body. As the cap is tightened, the tapered ferrule of the inner ring of the cap will gradually enter the inlet end of the elbow body. The outer ring of the tapered end of the tapered ferrule is smaller than the inner diameter of the inlet end of the elbow body, which facilitates its smooth entry. At the same time, the sealing gasket embedded in the inner ring of the tapered end of the tapered ferrule will make tight contact with the hose to fix and seal the connected hose.

[0016] At the same time, as the cap is screwed on the outside of the elbow body, the back of the cap slowly moves towards the side of the auxiliary nut. As the cap moves, it will slowly open the four clips on the ring bracket. When the cap is tightened, the four clips will be located in the slot. At this time, through the plastic elasticity principle of the clips, the four clips will reset and be inserted into the slot, completing the engagement of the cap, thereby limiting the position of the installed cap and preventing the cap from loosening or falling off.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, the locking mechanism effectively fixes and seals the cap during tightening, ensuring no leakage at the connection, guaranteeing the sealing and stability of fluid transmission, and improving the reliability of the connection.

[0019] This invention features an anti-detachment mechanism that automatically locks the cap after it is tightened, effectively preventing the cap from loosening or falling off due to vibration, external force, or other factors. This ensures a long-term stable and reliable connection between the elbow and the hose, reduces maintenance costs and usage risks, and enhances the overall safety and durability of the structure.

[0020] This invention achieves a tight seal on the hose by combining a locking mechanism and an anti-detachment part to prevent leakage, while also securing the cap. This ensures the reliability of the seal at the connection point and effectively prevents the cap from loosening and falling off, significantly improving the stability and safety of the overall structure under complex working conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a PTFE elbow bead insertion structure for a specific joint that is resistant to corrosion and high temperature, as proposed in this utility model.

[0022] Figure 2 This is a schematic diagram showing the overall disassembled structure of a PTFE elbow bead insertion structure for a specific joint that is resistant to corrosion and high temperature, as proposed in this utility model.

[0023] Figure 3 This is a cross-sectional view of the cap structure of a PTFE elbow bead insertion structure for a specific joint that is resistant to corrosion and high temperature, as proposed in this utility model.

[0024] Figure 4 This is an enlarged structural diagram of part A of a PTFE elbow bead insertion structure for a specific joint that is corrosion resistant and high temperature, as proposed in this utility model.

[0025] In the diagram: 1. Elbow body; 2. Threaded groove; 3. Auxiliary nut; 4. Bead insert body; 5. Cap; 6. Conical ferrule; 7. Sealing gasket; 8. Ring holder; 9. Frame holder; 10. Frame groove; 11. Limiting block; 12. Limiting groove; 13. Anti-slip protrusion. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figure 1-4 A PTFE elbow, comprising:

[0029] The elbow body 1, cap 5, ball insert body 4, ring frame 8 and other components are included. The elbow body 1 is the core load-bearing component of the entire structure. Threaded grooves 2 are opened on the outside of its two inlet ends, so that the cap 5 can be firmly installed on the inlet end of the elbow body 1 by means of threaded connection. Steps are fixedly set on the inner ring of the two inlet ends of the elbow body 1, which play a key positioning role when the ball insert body 4 is inserted later.

[0030] The cap 5 is equipped with a locking mechanism, which includes a conical sleeve 6 fixedly installed on the inner ring of the cap 5. The outer ring size of the conical end of the conical sleeve 6 is smaller than the inner diameter of the inlet end of the elbow body 1, ensuring that the conical sleeve 6 can smoothly enter the inlet end of the elbow body 1 during installation to fix the hose inside. The inner ring of the conical end of the conical sleeve 6 is embedded with a sealing gasket 7. When the cap 5 is gradually tightened, the sealing gasket 7 will come into close contact with the hose, thereby achieving a reliable sealing effect. At the same time, the inner diameter of the conical end of the conical sleeve 6 is larger than the outer diameter of the bead body 4, so that when the conical sleeve 6 enters the inlet end of the elbow body 1, it fixes the hose outside the bead body 4, thus confining the hose to the outside of the bead body 4 and the inside of the conical sleeve 6. In addition, in order to facilitate the operator to tighten the cap 5, multiple evenly distributed anti-slip protrusions 13 are fixedly installed on the outer ring of both caps 5. These anti-slip protrusions 13 increase the friction between the hand and the cap 5, making the operation more convenient.

[0031] The anti-detachment part includes a ring frame 8 sleeved on the outside of the two inlet ends of the elbow body 1. The inner ring of the ring frame 8 is fixedly provided with four limiting blocks 11 in a ring shape. On the outside of the two inlet ends of the elbow body 1, located behind the threaded groove 2, an auxiliary nut 3 is fixedly provided. The auxiliary nut 3 has a limiting groove 12 on the side near the ring frame 8, corresponding to the number of limiting blocks 11. The limiting groove 12 has a locking mechanism (such as an elastic protrusion or a mechanical telescopic protrusion). When the limiting block 11 enters the limiting groove 12, the protrusion in the limiting groove 12 will lock. When installing the ring frame 8, the limiting block 11 is aligned with the limiting groove 12 and inserted to lock the ring frame 8. Four clips 9 are fixedly arranged in a ring shape on the front side of the ring frame 8, and the cap 5 is provided with a slot 10 near the outer ring of the ring frame 8. The clips 9 are adapted to the slots 10 and can be disengaged. When the cap 5 is tightened to the appropriate position, the clips 9 will be inserted into the slots 10, thereby limiting the position of the cap 5 and preventing the cap 5 from loosening or falling off during subsequent use.

[0032] This application can be used in the field of PTFE elbow ball insertion technology for specific joints with corrosion resistance and high temperature, and can also be used in other fields applicable to this application.

[0033] Example 2

[0034] Based on Embodiment 1, Embodiment 2 further includes: a PTFE elbow bead insertion structure for a specific connector with corrosion resistance and high temperature. It is applied to the field of PTFE elbow bead insertion technology for a specific connector with corrosion resistance and high temperature. The bead body 4 is placed inside both ends of the elbow body 1. When the rear side of the bead body 4 is placed at the two inlet ends of the elbow body 1, it will abut against the step fixed to the inner ring of the inlet end of the elbow body 1, thereby ensuring that the bead body 4 is installed in place and providing stable support for the subsequent connection of the hose.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PTFE elbow bead insertion structure for a specific joint that is resistant to corrosion and high temperatures, characterized in that, include: Elbow body (1), both inlet ends of the elbow body (1) are provided with threaded grooves (2), and caps (5) are threadedly connected to the outside of the two threaded grooves (2) of the elbow body (1). Both ends of the elbow body (1) are provided with ball-inserting bodies (4). The cap (5) is provided with a locking mechanism inside, which is used to fix and seal the connected hose. Both ends of the elbow body (1) are provided with anti-detachment parts, which are used to limit the position of the installed cap (5).

2. The PTFE elbow bead insertion structure for a specific joint with corrosion resistance and high temperature as described in claim 1, characterized in that, The sealing mechanism includes a conical sleeve (6) fixedly disposed on the inner ring of the cap (5). The outer ring of the conical end of the conical sleeve (6) is smaller than the inner diameter of the inlet end of the elbow body (1). A sealing gasket (7) is embedded in the inner ring of the conical end of the conical sleeve (6). The inner diameter of the conical end of the conical sleeve (6) is larger than the outer diameter of the bead body (4).

3. The PTFE elbow bead insertion structure for a specific joint with corrosion resistance and high temperature as described in claim 1, characterized in that, The anti-detachment part includes a ring frame (8) sleeved on the outside of the two inlet ends of the elbow body (1). The front side of the ring frame (8) is fixedly provided with four card holders (9) in a ring shape. The cap (5) is provided with a card groove (10) near the outer ring of the ring frame (8). The card holder (9) is adapted to the card groove (10) and can be disengaged.

4. The PTFE elbow bead insertion structure for a specific joint with corrosion resistance and high temperature as described in claim 3, characterized in that, The inner ring of the ring frame (8) is fixedly provided with four limiting blocks (11) in a ring shape. The two inlet ends of the elbow body (1) are fixedly provided with auxiliary nuts (3) on the rear side of the threaded groove (2). The auxiliary nuts (3) are provided with limiting grooves (12) on the side near the ring frame (8) that correspond to the number of limiting blocks (11). The limiting blocks (11) can be locked in the limiting grooves (12).

5. The PTFE elbow bead insertion structure for a specific joint with corrosion resistance and high temperature as described in claim 1, characterized in that, The inner rings of the two inlet ends of the elbow body (1) are fixedly provided with steps, and the rear sides of the two bead bodies (4) abut against the two steps respectively when placed at the two inlet ends of the elbow body (1).

6. The PTFE elbow bead insertion structure for a specific joint with corrosion resistance and high temperature as described in claim 1, characterized in that, The outer rings of both caps (5) are fixedly provided with a plurality of evenly distributed anti-slip protrusions (13).

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