Self-locking rotatable socket and spigot joint

Abstract

The utility model discloses a self-locking rotatable socket-and-spigot joint, which relates to the field of filter related accessories, and has the technical scheme that the self-locking rotatable socket-and-spigot joint comprises a spigot part connected with a filter element liquid collecting pipe and a socket part connected with a pipeline, the spigot part is inserted into the socket part in a socket manner, a sealing ring is mounted in the socket part, and the socket part is connected with the pipeline in a sealing manner. A threaded reinforcing structure is installed between the socket part and the spigot part so as to reinforce the relative height between the socket part and the spigot part, and the effect is that the relative height between the socket part and the spigot part is reinforced through the threaded reinforcing structure installed between the socket part and the spigot part; the situation that under the influence of dynamic impact force, flow abrupt change and pressure fluctuation generated by high-speed flowing fluid in the filter or vibration and displacement caused by starting and stopping of equipment, the matching interface between the socket parts is loosened is avoided, the socket parts are effectively prevented from axially retreating from the socket parts, and the stability and reliability of connection are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter related accessories field more specifically, it relates to a self locking rotatable socket joint. BACKGROUND

[0002] In filter equipment, the connection of filter core collecting pipe and upper pipeline generally adopts socket joint form, that is, the socket (inner concave structure) of pipeline end and the socket (outer convex structure) of filter core collecting pipe top end realize connection through insertion cooperation.

[0003] The feature of this connection mode is convenient installation, but socket joint itself is not designed axial locking or limiting structure, thus needs to rely on external fixing measures (such as support, tail ear plate, clamp etc.) to fix filter core collecting pipe and pipeline respectively, to ensure that the socket and socket are stably cooperated in the vertical direction (relative height). However, in the long-term operation, the high-speed fluid (such as liquid or gas) in filter will continuously generate dynamic impact force to filter core collecting pipe and pipeline, especially when fluid flow mutates, pressure fluctuates or equipment starts and stops, the impact force will cause the vibration and displacement of joint part. Since socket joint only relies on external independent fixation of filter core collecting pipe and pipeline, lacks direct mechanical locking (such as buckle, screw thread, elastic snap ring etc.), the cooperation interface of socket part and socket part gradually relaxes under the action of long-term alternating load, leading to the slow axial exit of socket part from socket part, and the exit of socket will damage the sealing structure of socket interface, leading to the leakage of fluid from the joint, affecting the pressure stability and medium purity of filtration system.

[0004] Therefore, in order to solve the above technical problems, the application provides a self locking rotatable socket joint. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a self locking rotatable socket joint.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a self locking rotatable socket joint, which comprises a socket part connected with a filter core collecting pipe, and a socket part connected with a pipeline, the socket part is inserted in the socket part, and a sealing ring is installed in the socket part, a threaded reinforcing structure is installed between the socket part and the socket part to reinforce the relative height between the socket part and the socket part.

[0007] Preferably, the number of sealing rings installed in the socket part is one or more than one.

[0008] Preferably, the threaded reinforcing structure comprises a threaded hole opened on the socket part, and a positioning groove opened on the socket part, and the threaded hole is screwed into the threaded hole by rotating the screw, and the head enters the positioning groove.

[0009] Preferably, the positioning groove has a space for the screw to rotate, and the socket part can rotate along the spigot part.

[0010] Preferably, the sealing ring is made of acid and alkali resistant, corrosion resistant rubber or polymer material.

[0011] Preferably, the inner wall of the screw hole is provided with a thread locking coating, and the groove wall of the positioning groove is provided with a lubricating layer.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The threaded reinforcing structure installed between the spigot part and the socket part reinforces the relative height of the two, avoids the cooperation interface of the spigot part and the socket part from being loose under the influence of dynamic impact force, flow mutation, pressure fluctuation or vibration and displacement caused by equipment start and stop of the fluid flowing at high speed in the filter, effectively prevents the socket part from being axially withdrawn from the spigot part, ensures the stability and reliability of the connection, and solves the problem that the cooperation interface of the spigot part and the socket part is gradually loose under the action of long-term alternating load, and the socket part is slowly axially withdrawn from the spigot part.

[0014] 2. When the filter core collecting pipe is offset due to installation error, the design of being rotatable can correct the offset through fine adjustment, so that the spacing between the filter core collecting pipes in each row is equal.

[0015] 3. The sealing ring is made of acid and alkali resistant, corrosion resistant rubber or polymer material, which can significantly improve the applicability and durability of the socket joint in a complex fluid environment.

[0016] 4. The design of the thread locking coating on the inner wall of the screw hole and the lubricating layer on the groove wall of the positioning groove can significantly improve the reliability and operation convenience of the socket joint through complementary functions. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the present application, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is another angle specific structure schematic view of the utility model; Figure 1

[0020] Figure 3 ​The utility model discloses a socket part specific structure schematic diagram.

[0021] Figure 4 The utility model discloses a socket part specific structure schematic diagram.

[0022] In the drawing: 1, socket part, 2, socket part, 3, sealing ring, 4, threaded reinforcement structure, 401, screw hole, 402, positioning groove. Specific embodiments

[0023] As Figures 1-4 The utility model discloses a self -locking rotatable socket joint, including with the filter core liquid collecting pipe connection's socket part 1, and with the pipeline connection's socket part 2, socket part 1 socket is inserted in socket part 2, and socket part 2 inside installs sealing ring 3, and socket part 2 and socket part 1 between installation has threaded reinforcement structure 4, to the relative height between socket part 2 and socket part 1 is reinforced.

[0024] When working, the socket part 1 connected with the filter core liquid collecting pipe is inserted into the socket part 2 connected with the pipeline, the sealing ring 3 in the socket part 2 plays a sealing role, prevents fluid from leaking from the joint gap of the socket part 1 and the socket part 2, and ensures the pressure stability and medium purity of the filtration system. At the same time, the threaded reinforcement structure 4 installed between the socket part 2 and the socket part 1 reinforces the relative height of the two, avoids the cooperation interface of the socket part 2 and the socket part 1 from relaxing under the influence of the dynamic impact force generated by the high-speed flowing fluid in the filter, the flow mutation, the pressure fluctuation, or the vibration and displacement caused by the start and stop of the equipment, effectively prevents the socket part 1 from axially exiting from the socket part 2, and ensures the stability and reliability of the connection.

[0025] Moreover, the utility model does not limit the number of sealing rings 3, which can be one or more than one, for example, the number of sealing rings 3 installed inside the socket part 2 is two, and the sealing reliability and anti-leakage ability of the joint are significantly improved through the double-sealing structure. Specifically, the two sealing rings 3 form two independent sealing barriers, and even if one of the sealing rings 3 appears slight failure due to long-term fluid impact, wear, or aging, the other sealing ring 3 can still maintain the basic sealing function, avoiding direct fluid leakage; at the same time, the two sealing rings 3 can bear different direction pressure loads (such as positive fluid pressure and reverse vibration stress) respectively, reducing the load concentration problem of a single sealing ring 3, and prolonging the overall service life of the sealing structure.

[0026] The threaded reinforcement structure 4 includes a screw hole 401 opened in the socket part 2 and a positioning groove 402 opened in the socket part 1, and by rotating the screw into the screw hole 401 and the head into the positioning groove 402, the relative height of the socket part 2 and the socket part 1 can be reinforced, effectively preventing the socket part 1 from axially exiting from the socket part 2.

[0027] Moreover, the positioning groove 402 is designed in the shape of a screw movement space, such as a U shape, and the screw head can rotate relative to the inside of the positioning groove 402, so that the socket part 1 can also rotate along the inside of the socket part 2 (limited by the side wall of the positioning groove 402, so it can only rotate slightly, which can meet the actual needs of correcting installation errors, and avoid the socket part 1 and the socket part 2 from being separated or causing structural stress concentration due to excessive rotation), and finally the position between the filter core liquid collecting pipes relative to the pipe can be fine-tuned. When the filter core liquid collecting pipe is offset due to installation error, the above fine-tuning can be used for correction, so as to ensure that the spacing between each row of filter core liquid collecting pipes is equal.

[0028] Of course, the positioning groove 402 can also be designed in a ring shape around the socket part 1 according to the actual need for rotation, so that the socket part 1 can also rotate around the socket part 2. It should be noted that the positioning groove 402 with different shapes as long as the screw head can rotate inside is within the protection scope of the utility model.

[0029] Further, the sealing ring 3 is made of acid and alkali resistant, corrosion resistant rubber or high polymer material (such as ethylene propylene rubber, fluorine rubber, etc.), which can significantly improve the applicability and durability of the socket joint in complex fluid environment. Specifically, the filter often contacts media containing acid, alkali, salt or chemical solvent, and ordinary rubber is easily corroded to cause swelling, hardening or cracking, thereby causing sealing failure; and the acid and alkali resistant, corrosion resistant rubber or high polymer material can resist the corrosion of strong corrosive fluid through molecular structure modification, and maintain long-term stable elastic deformation ability. The design of the screw thread anti-loosening coating on the inner wall of the screw hole 401 and the lubricating layer on the groove wall of the positioning groove 402 can significantly improve the reliability and operation convenience of the socket joint through functional complementation: the screw thread anti-loosening coating (such as polytetrafluoroethylene, anaerobic adhesive or molybdenum disulfide, etc.) can effectively increase the friction resistance of the screw thread pair, and resist the screw loosening caused by fluid impact and vibration during long-term operation of the filter; the lubricating layer of the positioning groove 402 (such as PTFE dry film, graphite-based coating or perfluoropolyether grease, etc.) reduces the rotation torque of the screw head in the U-shaped positioning groove 402 by reducing the friction coefficient, which facilitates the fine-tuning of the socket part 1 and reduces metal contact wear and tear, prolonging the service life of the component.

[0030] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A self-locking rotatable socket joint, characterized in that: The filter core set liquid pipe is connected with the socket part (1), and the pipe is connected with the socket part (2), the socket part (1) is inserted in the socket part (2), and the sealing ring (3) is arranged in the socket part (2), the socket part (2) and the socket part (1) are arranged with the thread reinforcing structure (4), so that the relative height between the socket part (2) and the socket part (1) is reinforced.

2. A self-locking rotatable socket joint according to claim 1, characterized in that: The sealing ring (3) is arranged in the socket part (2).

3. A self-locking rotatable socket joint according to claim 1, wherein: The thread reinforcing structure (4) comprises a screw hole (401) formed on the socket part (2) and a positioning groove (402) formed on the socket part (1), and the screw is rotated into the screw hole (401) and the head part is arranged in the positioning groove (402).

4. A self-locking rotatable socket joint according to claim 3, wherein: The positioning groove (402) has a space for the screw to rotate, so that the socket part (1) can rotate along the socket part (2).

5. A self-sealing rotatable socket connector according to claim 1, wherein: The sealing ring (3) is made of acid and alkali resistant, corrosion resistant rubber or high polymer material.

6. A self-locking rotatable socket joint according to claim 3, wherein: The inner wall of the screw hole (401) is provided with a thread anti-loosening coating, and the groove wall of the positioning groove (402) is provided with a lubricating layer.

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