Multifunctional threaded sleeve

Abstract

The utility model provides a multifunctional threaded sleeve, and belongs to the technical field of connecting pieces. The multifunctional threaded casing pipe comprises a non-return casing pipe and a filter casing pipe, a casing pipe filter screen is installed in the filter casing pipe, and a non-return structure is installed in the non-return casing pipe; the non-return structure comprises a structural framework, a reset spring, a non-return plug and a non-return bottom support, an annular spring groove is formed in the bottom of the structural framework, the reset spring is embedded in the spring groove, the other end of the reset spring is connected with the non-return plug, and the non-return plug is matched with a one-way circulation opening in the center of the non-return bottom support. The one-way check valve has the advantages of being capable of achieving multifunctional application of one-way check and fluid filtration, convenient to disassemble, maintain and replace and more practical.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and specifically relates to a multifunctional threaded sleeve. Background Technology

[0002] Threaded pipe fittings are a type of pipe fitting with threads. They are typically used for connecting small-diameter water pipes, compressed air pipes, and low-pressure steam pipes. Conventional threaded pipe fittings only serve a connecting function and do not have any other functions.

[0003] According to patent application number CN202321481149.7, a threaded sleeve with a filtering function includes a sleeve body and a filtering module. A filter screen is placed inside the sleeve body, and then a hook plate is used to hook out part of the filter screen. The hooked-out filter screen body is fixed by inserting a rubber plate into the sleeve body. Then, two metal plates are moved towards the top and bottom of the sleeve body. After the metal plates are inserted into the sleeve body, they fix the rubber plate, effectively securing the filter screen and giving the threaded sleeve a filtering function. Threaded sleeves with filtering functions typically allow for unidirectional fluid flow; backflow can easily contaminate the fluid. Therefore, there is room for improvement in existing threaded sleeve technologies. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a multifunctional threaded sleeve.

[0005] The objective of this utility model can be achieved through the following technical solution: A multifunctional threaded sleeve, comprising a check sleeve and a filter sleeve; one end of the check sleeve has an external thread on its outer side wall, and the other end has an internal thread on its inner side wall, with a check structure provided inside the end with the external thread; the check structure includes a structural frame, a return spring, a check plug, and a check base, with an annular spring groove at the bottom of the structural frame, a return spring embedded in the spring groove, and a check plug connected to the other end of the return spring; a check base is provided between the check plug and the end of the check sleeve, and a one-way flow port that cooperates with the check plug is provided at the center of the check base;

[0006] Both ends of the filter sleeve have internal threads on their inner walls. Between the internal threads on both sides, an installation step is formed on the inner wall of the filter sleeve. The installation step has several screw holes circumferentially opened on the side facing away from the check sleeve. The filter screen of the sleeve is fixed to the installation step by the filter screen screws cooperating with the screw holes, so that the fluid flows into the check structure after filtration.

[0007] In the aforementioned multifunctional threaded sleeve, the diameter of the end of the check sleeve with an internal thread is larger than the diameter of the other end with an external thread. An installation step is formed on the inner wall of the check sleeve, and the installation step has several screw holes circumferentially formed on the side opposite to the check structure.

[0008] In the aforementioned multifunctional threaded sleeve, the filter screen inside the check sleeve can be fixed to the mounting step of the check sleeve by a filter screen screw, thereby performing secondary filtration of the fluid.

[0009] In the aforementioned multifunctional threaded sleeve, a limiting ring is formed at the end face of the end with the external thread, and the limiting ring has an angled guide groove on the side facing the filter sleeve.

[0010] In the aforementioned multifunctional threaded sleeve, the overall structural skeleton is a cone structure with several guide grooves at its center. The outer wall of the cone is fixedly connected to the inner wall of the check sleeve by an integrally formed support plate arranged circumferentially.

[0011] In the aforementioned multifunctional threaded sleeve, a hexagonal collar is integrally formed on the outer wall of both the check sleeve and the filter sleeve.

[0012] Compared with the prior art, the multifunctional threaded sleeve provided by this utility model realizes the multifunctional application of threaded sleeve in pipeline connection by the cooperation of check sleeve and filter sleeve, which can perform one-way check and fluid filtration. It is also easy to disassemble, repair and replace, making it more practical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this multi-functional threaded sleeve;

[0014] Figure 2 This is an exploded half-sectional view of the structure of this multi-functional threaded sleeve;

[0015] Figure 3 This is a cross-sectional view of the structure of this multi-functional threaded sleeve;

[0016] In the above diagram, 100 is the check sleeve; 110 is the external thread; 120 is the internal thread; 130 is the retaining ring; 131 is the beveled guide groove; 140 is the hexagonal collar; 200 is the filter sleeve; 210 is the mounting step; 211 is the screw hole; 220 is the sleeve filter screen; 230 is the filter screen screw; 300 is the check structure; 310 is the structural frame; 311 is the support plate; 312 is the guide groove; 313 is the spring groove; 320 is the return spring; 330 is the check plug; 340 is the check base; and 341 is the one-way flow port. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figures 1 to 3 As shown, this multifunctional threaded sleeve includes a check sleeve 100 and a filter sleeve 200, which are connected by threads. Both have an integrally formed hexagonal collar 140 on their outer walls. The hexagonal collar 140 facilitates screwing during installation and connection of the check sleeve 100 and filter sleeve 200, and also facilitates disassembly, maintenance, and replacement. A sleeve filter screen 220 is installed inside the filter sleeve 200, and a check structure 300 is installed inside the check sleeve 100. Together, these components enable the threaded sleeve to perform fluid filtration and one-way check in pipeline connections, demonstrating its practicality.

[0019] like Figures 2 to 3 As shown, one end of the check sleeve 100 has an external thread 110 on its outer side wall, and the other end has an internal thread 120 on its inner side wall. A check structure 300 is provided inside the end with the external thread 110. The pipe diameter of the end with the internal thread 120 is larger than the pipe diameter of the other end with the external thread 110. An installation step 210 is formed on the inner side wall of the check sleeve 100, and the installation step 210 has a plurality of screw holes 211 circumferentially formed on the side opposite to the check structure 300.

[0020] The check valve structure 300 includes a structural frame 310, a return spring 320, a check plug 330, and a check valve base 340. The structural frame 310 is generally conical in shape, with several guide grooves 312 evenly distributed around its center, penetrating the entire conical structural frame 310. The outer wall of the cone is fixedly connected to the inner wall of the check valve sleeve 100 by an integrally formed support plate 311. When fluid moves inside the threaded sleeve, it can flow in one direction through the flow channels formed between the guide grooves 312 and the support plate 311 and the inner wall of the check valve sleeve 100.

[0021] The bottom of the structural frame 310 has an annular spring groove 313, in which a return spring 320 is embedded. The other end of the return spring 320 is connected to a check plug 330. The side of the check plug 330 opposite to the return spring 320 protrudes to form an arc structure. The check plug 330 should be made of an elastic sealing material, preferably rubber. A check base 340 is provided between the check plug 330 and the end of the check sleeve 100. The center of the check base 340 has a one-way flow port 341 that mates with the check plug 330. At the end face of the check sleeve 100 where the external thread 110 is formed, a limiting ring 130 is formed. The limiting ring 130 has an angled guide groove 131 on the side facing the filter sleeve 200. The angled guide groove 131 serves to guide the flow.

[0022] When the fluid flows in from the limiting ring 130, the check plug 330 compresses the return spring 320 under the impact of the fluid, creating a gap between it and the one-way flow port at the center of the check base 340 to allow fluid to flow. When the flow direction is opposite, the check plug 330 blocks the one-way flow port 341 under the elastic force of the return spring 320 to prevent fluid from flowing, thereby realizing the one-way flow of fluid inside the threaded sleeve.

[0023] Both ends of the filter sleeve 200 have internal connecting threads 120 on their inner sidewalls. Between the internal connecting threads 120 on both sides, an installation step 210 is formed on the inner sidewall of the filter sleeve 200. The installation step 210 has several screw holes 211 circumferentially opened on the side facing away from the check sleeve 100. The filter screen 220 is fixed to the installation step 210 by the filter screen screw 230 cooperating with the screw holes 211, so that the fluid flows into the check structure 300 after filtration. If it has been used for a long time, the filter screen 220 can be replaced and cleaned simply by removing the filter screen screw 230.

[0024] To further explain, the filter screen 220 inside the check sleeve 100 can also be fixed to the mounting step 210 of the check sleeve 100 by the filter screen screw 230 to perform secondary filtration of the fluid. If the unidirectional flow direction is accidentally reversed during operation, the filter screen 220 inside the check sleeve 100 can prevent impurities carried by the fluid from affecting the check structure 300.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A multifunctional threaded sleeve, comprising a check sleeve (100) and a filter sleeve (200); characterized in that, One end of the check sleeve (100) has an external thread (110) on its outer side wall, and the other end has an internal thread (120) on its inner side wall. A check structure (300) is provided inside the end with the external thread (110). The check structure (300) includes a structural frame (310), a return spring (320), a check plug (330), and a check base (340). The bottom of the structural frame (310) has an annular spring groove (313). The return spring (320) is embedded in the spring groove (313). The other end of the return spring (320) is connected to the check plug (330). A check base (340) is provided between the check plug (330) and the end of the check sleeve (100). A one-way flow port (341) that cooperates with the check plug (330) is provided in the center of the check base (340). Both ends of the filter sleeve (200) are provided with connecting internal threads (120) on the inner sidewall. Between the connecting internal threads (120) on both sides, an installation step (210) is formed on the inner sidewall of the filter sleeve (200). The installation step (210) is provided with several screw holes (211) on the side opposite to the check sleeve (100). The filter screen (220) of the sleeve is fixed to the installation step (210) by the cooperation of the filter screen screw (230) with the screw holes (211), so that the fluid flows into the check structure (300) after filtration.

2. The multifunctional threaded sleeve according to claim 1, characterized in that, The diameter of the end of the check sleeve (100) with the internal thread (120) is larger than the diameter of the other end with the external thread (110). An installation step (210) is formed on the inner wall of the check sleeve (100). The installation step (210) has a plurality of screw holes (211) circumferentially formed on the side opposite to the check structure (300).

3. A multifunctional threaded sleeve according to claim 2, characterized in that, The filter screen (220) inside the check sleeve (100) can be fixed to the mounting step (210) of the check sleeve (100) by the filter screen screw (230) to perform secondary filtration of the fluid.

4. A multifunctional threaded sleeve according to claim 1, characterized in that, The check sleeve (100) has a limiting ring (130) at the end face of the end with the connecting external thread (110), and the limiting ring (130) has an angled guide groove (131) on the side facing the filter sleeve (200).

5. A multifunctional threaded sleeve according to claim 1, characterized in that, The structural frame (310) is generally conical in shape, with several guide grooves (312) in the center. The outer wall of the cone is fixedly connected to the inner wall of the check sleeve (100) by a circumferentially integrally formed support plate (311).

6. A multifunctional threaded sleeve according to claim 1, characterized in that, Hexagonal collars (140) are integrally formed on the outer walls of both the check sleeve (100) and the filter sleeve (200).

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