Quick connector free of raw adhesive tape

Abstract

The utility model relates to the technical field of quick connectors, in particular to a quick connector free of raw adhesive tape, which comprises a block valve, external threads are arranged at two ends of the block valve, a self-closing connector is mounted at one end of the block valve through a front locking nut, and a sealing gasket a is mounted on the end face of one end, inserted into the block valve, of the self-closing connector. A rear locking nut is installed on the external thread at the other end of the block valve, a connecting pipe inserted into an inner cavity of the block valve in a sliding mode is arranged in the rear locking nut, and a sealing gasket b is installed on the end face of the end, inserted into the block valve, of the connecting pipe. The quick coupling has the beneficial effects that raw adhesive tape is not needed when the quick coupling is mounted, the sealing gaskets are mounted among the components, and the locking nuts are used for driving the components to axially move to extrude the sealing gaskets to finish sealing, so that the mounting is simple, the manual operation time for cleaning and winding the raw material tape is shortened, the efficiency is improved, the cost is saved, and the quality is stable and reliable; and no raw adhesive tape waste is generated, so that the environment is not polluted.

Description

Technical Field

[0001] This utility model relates to the field of quick-connect coupling technology, and in particular to a quick-connect coupling that does not require raw rubber tape. Background Technology

[0002] High-temperature and corrosion-resistant stainless steel ton containers for electrolytes have strict requirements. Traditional electrolyte connectors use PTFE tape wrapped around the connector threads to fill the thread gaps and achieve a seal. During operation, workers first wrap PTFE tape around the external threads and then tighten the quick connector. Due to the significant differences in the quality of PTFE tape used in different factories, the number of wraps and the tightness of the tape vary greatly. Over-wrapping can lead to insufficient locking and leakage, while under-wrapping can damage the pipe threads. Furthermore, the PTFE tape entering the container can cause contamination and blockage, and the PTFE tape waste generated during disassembly can also pollute the environment. Utility Model Content

[0003] This invention aims to solve the above-mentioned problems by proposing a quick-connector that eliminates the need for raw rubber tape. It uses flat gaskets to seal between various components and quick-locking nuts to connect and lock them together. Pressing the flat gaskets together achieves a sealing effect, ensuring the sealing and connection between various components.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A quick-connector that eliminates the need for raw rubber tape includes a shut-off valve with external threads at both ends. A self-closing connector is installed at one end of the shut-off valve via a front locking nut. One end of the self-closing connector is inserted into the inner cavity of the shut-off valve. A sealing gasket a is installed at the end face of the self-closing connector inserted into the shut-off valve and embedded in the inner cavity of the shut-off valve. A rear locking nut is installed on the external threads of the other end of the shut-off valve. A connecting tube that slides into the inner cavity of the shut-off valve is provided inside the rear locking nut. A sealing gasket b is installed at the end face of the connecting tube inserted into the shut-off valve and embedded in the inner cavity of the shut-off valve. A card is formed on the outer wall of the connecting tube near the shut-off valve to restrict the position of the rear locking nut.

[0006] Furthermore, the shut-off valve includes a valve body, one end of which is formed with an external thread that mates with the front locking nut, and the other end of which is connected to a double-threaded connector via an internal thread. A flat washer is installed on the end face of the double-threaded connector that contacts the valve body, and the end of the double-threaded connector away from the valve body is formed with an external thread for installing the rear locking nut. A spherical valve core is rotatably installed inside the valve body, and two sets of spherical gaskets are embedded inside the valve body to seal the edge of the spherical valve core. A valve stem that drives the spherical valve core to rotate is rotatably installed on the valve body wall, and a handle that drives the valve stem to rotate is installed at the end of the valve stem that extends out of the valve body.

[0007] Furthermore, the card is detachably mounted on the outer wall of the connecting tube, and the outer diameter of the card is larger than the minimum diameter of the rear locking nut.

[0008] Furthermore, the end of the connecting pipe away from the shut-off valve is formed with an internal threaded connector for connection with the pipeline, and a second spring is nested on the outer wall of the connecting pipe, with the two ends of the second spring abutting against the end faces of the internal threaded connector and the rear locking nut, respectively.

[0009] Furthermore, the self-closing connector includes an outer shell with one end locked inside the front locking nut. A limiting step is formed on the outer wall of the outer shell to cooperate with the front locking nut. A tapered through hole with a larger inner diameter and a smaller outer diameter is formed at the end of the outer shell away from the shut-off valve. A tapered self-closing valve core is slidably installed in the tapered through hole. A sealing ring is installed on the contact surface between the self-closing valve core and the inner cavity of the outer shell. A first spring is nested outside the end of the self-closing valve core near the shut-off valve. A valve seat that limits the position of the first spring is installed inside the outer shell by a retaining spring.

[0010] Furthermore, the sealing gaskets (a, b) are made of perfluororubber.

[0011] The advantages of this utility model are as follows: when installing quick couplings, there is no need to use raw rubber tape. Sealing gaskets are installed between each component, and the locking nut is used to drive the axial movement of each component to squeeze the sealing gasket to complete the seal. The installation is simple, reducing the manual work time of cleaning and wrapping raw rubber tape, improving efficiency, saving costs, and ensuring stable and reliable quality. Moreover, there is no raw rubber tape waste, which will not cause pollution to the environment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a main sectional view of the present invention;

[0014] Figure 2 This is a perspective view of the present invention;

[0015] Figure 3 This is the front view of this utility model;

[0016] Figure 4 This is a partially enlarged schematic diagram of the present invention;

[0017] Figure 5 This is a main sectional view of another preferred embodiment of the present invention;

[0018] Figure 5 (1) The two ends of the double-wire connector 16 are both external threads. Figure 5 (2) The double-wire connector 16 has an external thread at one end and an internal thread at the other end;

[0019] Figure 6 This is a main sectional view of another preferred embodiment of the present invention.

[0020] The annotations in the attached figures are explained as follows:

[0021] 1. Shut-off valve; 11. Valve body; 12. Ball valve core; 13. Ball gasket; 14. Valve stem; 15. Handle; 16. Double-wire connector; 17. Flat washer; 2. Self-closing connector; 21. Housing; 22. Snap ring; 23. Valve seat; 24. Self-closing valve core; 25. First spring; 3. Front locking nut; 4. Connecting pipe; 5. Second spring; 6. Rear locking nut; 7. Clip; 8. Sealing gasket. Detailed Implementation

[0022] 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.

[0023] like Figures 1-3As shown, a quick-connect coupling that eliminates the need for raw rubber tape includes a shut-off valve 1 with external threads at both ends. The shut-off valve 1 allows manual control of the pipeline's flow. A self-closing connector 2 is mounted on one end of the shut-off valve 1 via a front locking nut 3. The self-closing connector 2 can be a 2P or 4P solvent-based quick-connect coupling. One end of the self-closing connector 2 is inserted into the inner cavity of the shut-off valve 1. A sealing gasket 8a is embedded in the inner cavity of the shut-off valve 1 at the end face of the self-closing connector 2 inserted into the shut-off valve 1. The front locking nut 3 moves the self-closing connector 2 closer to the shut-off valve 1. During this process, the sealing gasket 8a is compressed and seals the gap between the self-closing connector 2 and the shut-off valve 1, thus eliminating the need for raw rubber tape. The shut-off valve 1 has a sealing element. A rear locking nut 6 is installed on the external thread of the other end of the shut-off valve 1. A connecting tube 4 is provided inside the rear locking nut 6 and slides into the inner cavity of the shut-off valve 1. A sealing gasket 8b is installed at the end face of the connecting tube 4 that is inserted into the inner cavity of the shut-off valve 1. A card 7 is formed on the outer wall of the end of the connecting tube 4 near the shut-off valve 1 to restrict the position of the rear locking nut 6. When the rear locking nut 6 is installed on the shut-off valve 1, the card 7 pushes the connecting tube 4 to move into the shut-off valve 1 and squeezes the sealing gasket 8b to achieve a seal. The sealing gaskets 8a and 8b are made of perfluororubber. The total length of the joint after assembly is 143mm or 147mm.

[0024] In this embodiment, the card 7 is detachably connected and installed on the outer wall of the connecting pipe 4. The outer diameter of the card 7 is larger than the minimum diameter of the rear locking nut 6. The detachable card 7 enables the assembly of the rear locking nut 6 and the connecting pipe 4, allowing the rear locking nut 6 to drive the connecting pipe 4 to move axially, thereby installing the connecting pipe 4 on the shut-off valve 1.

[0025] In this embodiment, the end of the connecting pipe 4 away from the shut-off valve 1 is formed with an internal threaded connector for connecting to a pipeline. Different sizes of internal threaded connectors can be used to connect to pipelines of different diameters. A second spring 5 is nested on the outer wall of the connecting pipe 4. The two ends of the second spring 5 abut against the end faces of the internal threaded connector and the rear locking nut 6, respectively. The second spring 5 pushes the rear locking nut 6 away from the internal threaded connector, so that the card 7 abuts against the side wall of the rear locking nut 6, reducing the probability of the rear locking nut 6 loosening accidentally during use.

[0026] like Figure 1As shown, the self-closing connector 2 includes a housing 21 with one end locked inside the front locking nut 3. A limiting step is formed on the outer wall of the housing 21 to cooperate with the front locking nut 3. A tapered through hole with a larger inner diameter and a smaller outer diameter is formed at the end of the housing 21 away from the shut-off valve 1. A tapered self-closing valve core 24 is slidably installed in the tapered through hole. A sealing ring is installed on the contact surface between the self-closing valve core 24 and the inner cavity of the housing 21. A first spring 25 is nested on the outside of the end of the self-closing valve core 24 near the shut-off valve 1. A valve seat 23 that restricts the position of the first spring 25 is installed inside the housing 21 through a retaining spring 22. The self-closing connector 2 is prior art and will not be described in detail. Those skilled in the art can choose other connector structures to replace it as needed, or can choose 1P, 2P, 3P, 4P, 1S, 2S, 3S, or 4S connectors.

[0027] like Figure 4 As shown, the shut-off valve 1 includes a valve body 11. One end of the valve body 11 is formed with an external thread that mates with the front locking nut 3. The other end of the valve body 11 is connected to a double-threaded connector 16 via an internal thread. A flat washer 17 is installed on the end face of the double-threaded connector 16 that contacts the valve body 11. The end of the double-threaded connector 16 away from the valve body 11 is formed with an external thread for installing the rear locking nut 6. A spherical valve core 12 is rotatably mounted inside the valve body 11. Two sets of sealing elements for the edge of the spherical valve core 12 are embedded inside the valve body 11. The valve body 11 has a ball-shaped gasket 13. A valve stem 14, which drives the ball valve core 12 to rotate, is rotatably mounted on the wall of the valve body 11. A sealing ring is installed at the contact point between the valve stem 14 and the valve body 11. A handle 15, which drives the valve stem 14 to rotate, is installed at the end of the valve stem 14 that extends out of the valve body 11. Rotating the handle 15 can drive the valve stem 14 to rotate, thereby driving the ball valve core 12 to rotate and controlling the connection and disconnection of the inner cavity of the valve body 11. This valve structure belongs to the prior art and is therefore not described in detail. Those skilled in the art can choose other valve structures to replace the shut-off valve 1 in this application as needed.

[0028] like Figure 5 As shown, another preferred embodiment of this utility model is a quick connector, comprising a double-wire connector 16, a self-closing connector 2, and a front locking nut 3. The self-closing connector 2 is directly installed onto the double-wire connector 16 using the front locking nut 3. A sealing gasket 8 is installed at the end of the self-closing connector 2 that is inserted into the double-wire connector 16. The self-closing connector 2 can be a 2P or 4P solvent quick connector. After assembly, the total length of the connector is 65mm or 63mm, suitable for installation on the top cover of a stainless steel electrolyte container. Figure 5 (1) The two ends of the double-wire connector 16 are both external threads. Figure 5 (2) The double-wire connector 16 has an external thread at one end and an internal thread at the other end.

[0029] like Figure 6 As shown, as another preferred embodiment of this utility model, a quick connector is provided, which consists of a shut-off valve 1, a self-closing connector 2, and a front locking nut 3. The self-closing connector 3 is installed on the shut-off valve 1 using the front locking nut 3. A sealing gasket 8 is installed at the end of the self-closing connector 2 that is inserted into the shut-off valve 1. The self-closing connector 2 can be a 2P or 4P quick connector for solvents. After assembly, the total length of the connector is 96mm or 147mm. It is installed on the lid of the stainless steel ton container for electrolyte. The installation of the shut-off valve 1 makes it safer and allows the connection channel to be manually closed.

[0030] Components not described in detail in this article are existing technologies.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick coupling joint without rubber tape, comprising a shut-off valve (1) provided with external threads at both ends, characterized in that: One end of the cut-off valve (1) is provided with a self-closing joint (2) through a front locking nut (3), one end of the self-closing joint (2) is inserted into the inner cavity of the end of the cut-off valve (1), the end face of the self-closing joint (2) inserted into the cut-off valve (1) is provided with a sealing gasket (8a) embedded in the inner cavity of the cut-off valve (1), the other end of the cut-off valve (1) is provided with a rear locking nut (6) on the outer thread, the rear locking nut (6) is provided with a connecting pipe (4) which is slidably inserted into the inner cavity of the cut-off valve (1), the end face of the connecting pipe (4) inserted into the cut-off valve (1) is provided with a sealing gasket (8b) embedded in the inner cavity of the cut-off valve (1), the outer wall of the connecting pipe (4) near the end of the cut-off valve (1) is formed with a card (7) limiting the position of the rear locking nut (6).

2. A quick connector without rubber band according to claim 1, characterized in that: The cut-off valve (1) comprises a valve body (11), one end of the valve body (11) is formed with an outer thread matched with the front locking nut (3), the other end of the valve body (11) is provided with a double wire connecting body (16) through an inner thread connection, the end face of the double wire connecting body (16) in contact with the valve body (11) is provided with a flat gasket (17), the end of the double wire connecting body (16) away from the valve body (11) is formed with an outer thread for installing the rear locking nut (6), the valve body (11) is rotatably provided with a spherical valve core (12) in the inner cavity, the inner cavity of the valve body (11) is embedded with two groups of spherical center gaskets (13) for sealing the edge of the spherical valve core (12), the wall of the valve body (11) is rotatably provided with a valve rod (14) for driving the spherical valve core (12) to rotate, the end of the valve rod (14) extending out of the valve body (11) is provided with a handle (15) for driving the valve rod (14) to rotate.

3. A quick connector without rubber band according to claim 1, characterized in that: The card (7) is detachably connected to the outer wall of the connecting pipe (4), the outer diameter of the card (7) is greater than the minimum diameter of the rear locking nut (6).

4. A quick connector without rubber band according to claim 3, characterized in that: The end of the connecting pipe (4) away from the cut-off valve (1) is formed with an inner thread joint for connecting with a pipeline, the outer wall of the connecting pipe (4) is nested with a second spring (5), the two ends of the second spring (5) are respectively abutted against the end face of the inner thread joint and the rear locking nut (6).

5. A quick connector without rubber band according to claim 1, characterized in that: The self-closing joint (2) comprises an outer shell (21) clamped in the front locking nut (3), the outer wall of the outer shell (21) is formed with a limiting step matched with the front locking nut (3), the end of the outer shell (21) away from the cut-off valve (1) is formed with a tapered through hole with large inner diameter and small outer diameter, a tapered self-closing valve core (24) is slidably installed in the tapered through hole, a sealing ring is installed on the contact surface of the self-closing valve core (24) with the inner cavity of the outer shell (21), a first spring (25) is nested on the outer part of the end of the self-closing valve core (24) close to the cut-off valve (1), a valve seat (23) limiting the position of the first spring (25) is installed in the inner part of the outer shell (21) through a snap spring (22).

6. A quick connector without rubber band according to claim 1, characterized in that: The sealing gaskets (8a, 8b) are made of perfluorinated rubber.

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