Modularized connecting device of air source pipe straight-through quick connector

Abstract

The utility model discloses a modularized connecting device of a straight-through quick connector of an air source pipe, which relates to the technical field of air source pipe connecting structures and comprises an inner threaded sleeve, a first connecting threaded sleeve and a second connecting threaded sleeve, and the first connecting threaded sleeve and the second connecting threaded sleeve are respectively provided with an inner thread and an outer thread and are respectively connected with two ends of the inner threaded sleeve through the outer threads. The inner threads are respectively connected with an air source joint; a shoulder part is arranged in the middle of the inner thread sleeve, and a first screwing through hole is coaxially formed in the shoulder part; flanges extending inwards in the radial direction are arranged at the ends, close to the shoulder part, of the first connecting screw sleeve and the second connecting screw sleeve correspondingly, the flanges abut against the side face of the shoulder part, and second screwing through holes are coaxially formed in the flanges; two air source pipes with different sizes can be connected through the air source connector, the connecting screw sleeve and the inner screw sleeve, the connecting structure is simpler, the connecting process is more convenient, and the connecting efficiency between the air source pipes with different diameters can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas source pipe connection structures, in particular to a modular connection device of a gas source pipe direct-through quick connector. Background Art

[0002] The gas source straight-through connector is mainly used to connect two gas source pipes for gas supply. In actual work, various types of gas source straight-through connectors will be prepared according to the on-site conditions to meet the on-site construction requirements.

[0003] When the on-site equipment is technically modified, new and expanded gas lines will be added, and sometimes a large outer diameter gas source tube will be converted to a small outer diameter gas source tube. For example, when converting a 16mm outer diameter gas source tube to a 4mm outer diameter gas source tube, the only way to convert it step by step is to use a gas source straight-through connector with a small section of the gas source tube. The process is 16mm to 12mm, 12mm to 10mm, 10mm to 8mm, 8mm to 6mm, and 6mm to 4mm. The entire conversion process requires 5 gas source straight-through connectors and gas source tubes with diameters of 12mm, 10mm, 8mm, and 6mm to meet the process requirements. This construction method will result in the construction personnel needing to carry a large number of gas source connectors of many types, and it will take too much time to identify the types of connectors during the construction process, affecting work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a modular connection device for a gas source pipe straight-through quick connector to solve the problems existing in the prior art. The gas source connector, the connecting thread sleeve and the inner thread sleeve can be used to connect two gas source pipes of different sizes. The connection structure is simpler and the connection process is more convenient, which can greatly improve the connection efficiency between gas source pipes of different diameters.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a modular connection device for a gas source pipe straight-through quick connector, comprising an inner thread sleeve, a first connecting thread sleeve and a second connecting thread sleeve, wherein the first connecting thread sleeve and the second connecting thread sleeve both have an inner thread and an outer thread, and are respectively connected to two ends of the inner thread sleeve through the outer thread, and are respectively connected to a gas source connector through the inner thread; a shoulder is provided in the middle of the inner thread sleeve, and a first screwing through hole is coaxially provided on the shoulder; a flange extending radially inward is provided at one end of the first connecting thread sleeve and the second connecting thread sleeve close to the shoulder, and the flange is abutted against the side of the shoulder, and a second screwing through hole is coaxially provided on the flange.

[0007] Preferably, the size of the first screw through hole is greater than or equal to the size of the second screw through hole and greater than the inner diameter of the joint end of the air source joint corresponding to the second screw through hole.

[0008] Preferably, the first screw through hole and the second screw through hole are both hexagonal holes.

[0009] Preferably, an annular first sealing platform is arranged on the end surface of the flange close to the shoulder, and the first sealing platform has a first annular tip abutting against the end surface of the shoulder.

[0010] Preferably, it also includes a thread plug, which replaces the first connecting thread sleeve or the second connecting thread sleeve and is connected to the end of the inner thread sleeve through an external thread, one end of the thread plug abuts against one side end surface of the shoulder, and the other end is provided with a third screwing portion.

[0011] Preferably, in the thread plug, an annular second sealing platform is arranged on the end surface abutting against the shoulder, and the second sealing platform has a second annular tip abutting against the end surface of the shoulder.

[0012] Preferably, the third screwing portion is a hexagonal blind hole.

[0013] Preferably, the threads of the inner thread sleeve, the first connecting thread sleeve, the second connecting thread sleeve and the thread plug are all trapezoidal.

[0014] Preferably, the nominal diameter of the external thread of the first connecting thread sleeve, the nominal diameter of the external thread of the second connecting thread sleeve and the nominal diameter of the external thread of the thread plug are all greater than the nominal diameter of the internal thread of the internal thread sleeve.

[0015] Preferably, the inner thread sleeve is made of stainless steel, and the first connecting thread sleeve, the second connecting thread sleeve and the thread plug are all made of engineering plastics.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The modular connection device of the gas source pipe straight-through quick connector in the utility model is provided with a connecting thread sleeve that can match the size models of different gas source connectors, and uses the threaded connection of the connecting thread sleeve and the inner thread sleeve to realize the connection of gas source pipes of different diameters, without the need to use the gas source connector and the gas source pipe to change the diameter multiple times. The connection structure is simpler and the connection process is more convenient, which can greatly improve the connection efficiency between gas source pipes of different diameters. At the same time, during the work process, the staff only needs to carry connecting thread sleeves, inner thread sleeves and gas source connectors of different sizes with different internal thread sizes, and does not need to carry gas source pipes of different sizes for transfer, and the number of gas source connectors carried is reduced, which is more convenient for the staff to carry out work and reduces the procurement difficulty for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the structure of connecting the two ends of the inner thread sleeve in the utility model;

[0020] Figure 2 for Figure 1 A side sectional view of

[0021] Figure 3 It is a schematic diagram of the structure of connecting the two ends of the inner thread sleeve with the thread plugs and the thread sleeve respectively;

[0022] Figure 4 for Figure 3 A side sectional view of

[0023] Among them, 1. inner thread sleeve; 2. first connecting thread sleeve; 3. second connecting thread sleeve; 4. first gas source connector; 5. second gas source connector; 6. shoulder; 7. first screw through hole; 8. flange; 9. second screw through hole; 10. first sealing platform; 11. thread plug; 12. third screwing part; 13. second sealing platform. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The purpose of the utility model is to provide a modular connection device for a gas source pipe straight-through quick connector to solve the problems existing in the prior art. The gas source connector, the connecting thread sleeve and the inner thread sleeve can be used to connect two gas source pipes of different sizes. The connection structure is simpler and the connection process is more convenient, which can greatly improve the connection efficiency between gas source pipes of different diameters.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1 , Figure 2As shown, this embodiment provides a modular connection device for a gas source pipe direct quick connector, including an inner thread sleeve 1, a first connecting thread sleeve 2 and a second connecting thread sleeve 3. The first connecting thread sleeve 2 and the second connecting thread sleeve 3 both have internal threads and external threads, and are respectively connected to the two ends of the inner thread sleeve 1 through the external threads cooperating with the internal threads of the inner thread sleeve 1; and are respectively connected to a gas source connector through the internal threads. A shoulder 6 is provided in the middle of the inner wall surface of the inner thread sleeve 1, and a first screwing through hole 7 is coaxially provided on the shoulder 6; a flange 8 extending radially inward is provided at one end of the first connecting thread sleeve 2 and the second connecting thread sleeve 3 close to the shoulder 6, and the flange 8 is abutted and sealed against the side of the shoulder 6, and a second screwing through hole 9 is coaxially provided on the flange 8.

[0028] When it is necessary to convert a large-diameter gas source tube into a small-diameter gas source tube, first connect the end of the gas source tube at one end to one end of the first gas source connector 4 that matches its size (the gas source tube and the gas source connector are usually plugged in), and then select the first connecting threaded sleeve 2 that matches the size of the first gas source connector 4 to be threadedly connected to the other end of the first gas source connector 4. During installation, use the screwing tool and the second screwing through hole 9 to abut one side end face of the flange 8 against the end face of the first gas source connector 4 to form a seal; then use the screwing tool and the first screwing through hole 7 to connect the inner threaded sleeve 1 to the external thread of the first connecting threaded sleeve 2; the other side end face of the flange 8 abuts against one side end face of the shoulder 6 on the inner threaded sleeve 1 for sealing. Similarly, thread the second connecting threaded sleeve 3 and the second gas source connector 5 that match the size of the gas source tube at the other end in turn, and finally plug the gas source tube at the other end into the second gas source connector 5.

[0029] It should be noted that the internal thread of the connecting thread sleeve is matched with the size of the gas source connection joints of different sizes, but the size of the external thread is unified and is matched with the internal thread of the inner thread sleeve 1. That is, the internal thread sizes on both sides of the shoulder 6 in the inner thread sleeve 1 are the same. Figure 1 and Figure 2 Although the first connecting thread sleeve 2 and the second connecting thread sleeve 3 are visually the same size, it only represents the connection form and structural form, and does not represent the specific size.

[0030] Therefore, the modular connection device of the gas source pipe straight-through quick connector in this embodiment realizes the connection of gas source pipes of different diameters by providing a connecting thread sleeve that can match the size models of gas source connectors of different sizes, and utilizes the threaded connection between the connecting thread sleeve and the inner thread sleeve 1, without having to use the gas source connector and the gas source pipe to change the diameter multiple times. The connection structure is simpler and the connection process is more convenient, which can greatly improve the connection efficiency between gas source pipes of different diameters. At the same time, during the work process, the staff only needs to carry connecting thread sleeves of different internal thread sizes, the inner thread sleeve 1 and gas source connectors of different sizes. There is no need to carry gas source pipes of different sizes for transfer, and the number of gas source connectors carried is reduced, which is more convenient for the staff to carry out work and reduces the difficulty of procurement for the staff.

[0031] Furthermore, in this embodiment, the first screwing through hole 7 and the second screwing through hole 9, on the one hand, serve as the force application part for screwing, which is convenient for tightening to achieve abutment sealing; on the other hand, they are located in the circulation channel of the fluid medium. Therefore, the first screwing through hole 7 and the second screwing through hole 9 must have a certain size, which is usually set to be not less than the inner diameter size of the end of the corresponding gas source connector, and the size of the first screwing through hole 7 is not less than the size of the second screwing through hole 9. Since the first screwing through hole 7 and the second screwing through hole 9 need to cooperate with the screwing tool to apply force, they can be set as polygonal holes, such as square holes or hexagonal holes; further, in order to use the existing hexagonal wrench to screw, the first screwing through hole 7 and the second screwing through hole 9 can be set as hexagonal holes. And in order to facilitate the insertion of the screwing tool into the first screwing through hole 7 and the second screwing through hole 9, both ends of the first screwing through hole 7 and the end of the second screwing through hole 9 away from the shoulder 6 are provided with conical guide surfaces.

[0032] Furthermore, in this embodiment, an annular first sealing platform 10 is provided on the end surface of the flange 8 close to the shoulder 6. The cross-sectional shape of the first sealing platform 10 is triangular, and it has a first annular tip abutting against the end surface of the shoulder 6. When the first annular tip abuts against the end surface of the shoulder 6, the first sealing platform 10 is squeezed and deformed by external force to fill outward, thereby improving the sealing effect between the flange 8 and the shoulder 6.

[0033] like Figure 3 , Figure 4 The figure also includes a plug 11, which replaces the first connecting thread sleeve 2 or the second connecting thread sleeve 3 and is connected to the end of the inner thread sleeve 1 through an external thread, one end of the plug 11 abuts against one end surface of the shoulder 6, and the other end is provided with a third screwing portion 12. The setting of the plug 11 can seal the fluid channel and can be used for sealing the end of the gas source pipe.

[0034] Furthermore, in the thread plug 11, an annular second sealing platform 13 is provided on the end surface abutting against the shoulder 6. The second sealing platform 13 has a second annular tip abutting against the end surface of the shoulder 6. The second sealing platform 13 can be squeezed and deformed to improve the sealing effect.

[0035] In order to facilitate the screwing of the screw plug 11, the third screwing portion 12 in this embodiment can be a screwing boss (such as a prism-shaped prism-shaped boss that can cooperate with a wrench) or a blind hole, which is a hexagonal blind hole in this embodiment.

[0036] The threads (including internal threads and external threads) of the inner thread sleeve 1, the first connecting thread sleeve 2, the second connecting thread sleeve 3 and the thread plug 11 are all trapezoidal. The nominal diameter of the external thread of the first connecting thread sleeve 2, the nominal diameter of the external thread of the second connecting thread sleeve 3 and the nominal diameter of the external thread of the thread plug 11 are all larger than the nominal diameter of the internal thread of the inner thread sleeve 1. The material of the inner thread sleeve 1 is stainless steel, which is used to ensure the strength of the overall device; the material of the first connecting thread sleeve 2, the second connecting thread sleeve 3 and the thread plug 11 are all engineering plastics, such as nylon material, which has good strength and toughness. When the threads are matched, the external threads of the first connecting thread sleeve 2, the second connecting thread sleeve 3 and the thread plug 11 will be squeezed and deformed to fill the internal thread groove of the inner thread sleeve 1 to form a seal, thereby further improving the sealing ability.

[0037] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0038] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0039] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A modular connection device for a gas source pipe direct quick connector, characterized in that: It includes an inner thread sleeve, a first connecting thread sleeve and a second connecting thread sleeve, wherein the first connecting thread sleeve and the second connecting thread sleeve both have inner threads and outer threads, and are respectively connected to two ends of the inner thread sleeve through the outer threads, and are respectively connected to an air source joint through the inner threads; a shoulder is provided in the middle of the inner thread sleeve, and a first screwing through hole is coaxially provided on the shoulder; a flange extending radially inward is provided at one end of the first connecting thread sleeve and the second connecting thread sleeve close to the shoulder, and the flange abuts against the side of the shoulder, and a second screwing through hole is coaxially provided on the flange.

2. The modular connection device of the gas source pipe direct quick connector according to claim 1, characterized in that: The size of the first screw through hole is greater than or equal to the size of the second screw through hole and greater than the inner diameter of the joint end of the air source joint corresponding to the second screw through hole.

3. The modular connection device of the gas source pipe direct quick connector according to claim 2, characterized in that: The first screw through hole and the second screw through hole are both hexagonal holes.

4. The modular connection device of the gas source pipe direct quick connector according to claim 1, characterized in that: An annular first sealing platform is arranged on the end surface of the flange close to the shoulder, and the first sealing platform has a first annular tip abutting against the end surface of the shoulder.

5. The modular connection device of the gas source pipe direct quick connector according to claim 1, characterized in that: It also includes a thread plug, which replaces the first connecting thread sleeve or the second connecting thread sleeve and is connected to the end of the inner thread sleeve through an external thread. One end of the thread plug abuts against one end surface of the shoulder, and the other end is provided with a third screwing part.

6. The modular connection device of the gas source pipe direct quick connector according to claim 5, characterized in that: In the thread plug, an annular second sealing platform is arranged on the end surface abutting against the shoulder, and the second sealing platform has a second annular tip abutting against the end surface of the shoulder.

7. The modular connection device of the gas source pipe direct quick connector according to claim 6, characterized in that: The third screwing portion is a hexagonal blind hole.

8. The modular connection device of the gas source pipe direct quick connector according to claim 6, characterized in that: The threads of the inner thread sleeve, the first connecting thread sleeve, the second connecting thread sleeve and the thread plug are all trapezoidal.

9. The modular connection device of the gas source pipe direct quick connector according to claim 8, characterized in that: The nominal diameters of the external threads of the first connecting thread sleeve, the second connecting thread sleeve and the thread plug are all larger than the nominal diameter of the internal threads of the internal thread sleeve.

10. The modular connection device of the gas source pipe direct quick connector according to claim 9, characterized in that: The material of the inner thread sleeve is stainless steel, and the materials of the first connecting thread sleeve, the second connecting thread sleeve and the thread plug are all engineering plastics.

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