Instrument pipe fitting with high sealing performance

Abstract

The utility model discloses a high-sealing-performance instrument pipe fitting, and relates to the technical field of instrument pipe fittings. A first threaded pipe is fixedly installed at one end of the connecting pipe, a second threaded pipe is fixedly connected to the end, away from the first threaded pipe, of the connecting pipe, a first sealing ring is arranged in the end, away from the connecting pipe, of the second threaded pipe, a second sealing ring is arranged in the first sealing ring, and a threaded sleeve is connected to the second threaded pipe in a threaded mode. The connecting pipe is fixedly sleeved with a hexagonal ring. The three telescopic plate assemblies are rotated, each telescopic plate assembly extends to the longest extent at the same time, the three fixing plates are arranged in the three second grooves respectively, finally, the tail ends of the three bolts are connected to the interiors of the adjacent threaded holes respectively in a threaded mode, and due to the fact that the hexagonal ring is installed outside the connecting pipe and cannot rotate, the connecting pipe can not rotate. Therefore, rotation of the threaded sleeve is not affected by vibration, and the situation that the threaded sleeve is vibrated to rotate and disengage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument pipe fittings, in particular to a high-sealability instrument pipe fitting. Background Art

[0002] Instrument fittings are used in pipeline connections or control systems. They are used to change the direction of pipelines, branch pipelines, or connect pipes of different sizes. Their use environment is much more demanding than that of straight pipes. The materials used for fittings can be pipes, plates, forgings, castings, bars, and profiles, etc. They can be processed and manufactured by welding, stamping, casting or forging. Usually, the material and thickness of the fittings depend on the material, shape, size of the fittings used, as well as the fluid medium and pressure being transported.

[0003] However, in actual use of the high-sealing instrument fittings in the prior art, if the installed pipeline is affected by the connecting equipment and vibrates for a long time, the instrument fittings connected to the pipeline will also vibrate. In an environment of long-term vibration, the instrument fittings are very likely to become loose in connection. This is mainly because the threaded sleeve used for tightening in the instrument fittings will rotate and loosen due to vibration, thereby affecting the sealing connection effect of the instrument fittings. For this reason, a high-sealing instrument fitting is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the actual use of the high-sealing instrument pipe fittings in the prior art, if the installed pipeline is affected by the connecting equipment and vibrates for a long time, the instrument pipe fittings connected to the pipeline will also vibrate accordingly, and the instrument pipe fittings are very likely to become loose in a long-term vibration environment. This is mainly because the threaded sleeve used for tightening in the instrument pipe fittings will rotate and loosen due to vibration, thereby affecting the sealing connection effect of the instrument pipe fittings. The utility model provides a high-sealing instrument pipe fitting.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A high-sealing instrument pipe fitting comprises a connecting pipe, one end of which is fixedly mounted with a threaded pipe 1, the end of the connecting pipe away from the threaded pipe 1 is fixedly connected with a threaded pipe 2, a sealing ring 1 is arranged inside the end of the threaded pipe 2 away from the connecting pipe, a sealing ring 2 is arranged inside the sealing ring 1, a threaded sleeve is threadedly connected to the threaded pipe 2, a hexagonal ring is arranged on the fixed sleeve of the connecting pipe, a groove 1 is respectively arranged on the three side walls of the threaded sleeve, a rotatable shaft is movably arranged inside each groove 1, a telescopic plate assembly with a telescopic function is arranged on the side wall of each shaft, a fixing plate is arranged on the end of each telescopic plate assembly away from the shaft, a bolt is threadedly connected to each fixing plate, a groove 2 is respectively arranged on the three side walls of the hexagonal ring, and a threaded hole is arranged on the inner wall of each groove 2.

[0007] Furthermore, the telescopic plate assembly includes a telescopic plate 1, and the side wall surface of each rotating shaft is fixedly installed with a telescopic plate 1, the side wall surface of each telescopic plate 1 is opened with a rectangular groove, and the interior of each rectangular groove is movably installed with a telescopic plate 2, and the end of each telescopic plate 2 away from the adjacent rotating shaft is fixedly installed with a fixed plate.

[0008] Furthermore, the telescopic plate assembly also includes a slide groove, and slide grooves are provided on both side walls symmetrical to each other in each rectangular groove, a slider is movably installed inside each slide groove, and each slider is fixedly connected to the adjacent telescopic plate 2, a spring is fixedly installed on one side of each slide groove close to the adjacent rotating shaft, and the free end of each spring is fixedly connected to the adjacent slider, and a plurality of equally spaced trapezoidal grooves are provided on the inner side wall surface of each rectangular groove, a trapezoidal rod is movably installed inside each trapezoidal groove, and each trapezoidal rod is fixedly connected to the adjacent telescopic plate 2.

[0009] Furthermore, the inner wall surface of each groove 1 is inlaid with two magnetic blocks 1, and the side wall surface of each fixed plate is inlaid with two magnetic blocks 2, and the magnetic blocks 2 and the magnetic blocks 1 are adsorbed on each other.

[0010] Furthermore, a positioning plate is fixedly installed inside each of the second grooves, and one end of each fixing plate away from the adjacent rotating shaft is arranged in a convex arc surface.

[0011] Furthermore, the inner depths of the three grooves 1 and the three grooves 2 are the same, and the inner depth of the groove 1 is the same as the thickness of the telescopic plate 1.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. When the utility model is used to connect a pipeline, it is only necessary to insert the connecting end of the pipeline into the interior of the threaded pipe 2, and then the sealing ring 1, the sealing ring 2, and the threaded sleeve are sequentially sleeved on the pipeline, and the threaded sleeve is threadedly connected to the threaded pipe 2. At this time, the threaded sleeve will push the sealing ring 2 into the interior of the sealing ring 1, and the sealing ring 1 will also enter the interior of the threaded pipe 2, thereby achieving the purpose of connecting the pipeline. In order to prevent the threaded sleeve from rotating in the opposite direction and disengaging after the pipeline is vibrated, when the threaded sleeve is rotated to gradually approach the connecting pipe and reaches a certain position where it cannot continue to rotate, the six side wall surfaces of the threaded sleeve correspond to the six side wall surfaces of the hexagonal ring respectively, and then the three groups of telescopic plate assemblies are rotated, and each group of telescopic plate assemblies is stretched to the longest extent at the same time, so that the three fixing plates are respectively placed in the interiors of the three grooves 2, and finally the tail ends of the three bolts are respectively threadedly connected to the interiors of adjacent threaded holes. Since the hexagonal ring is installed on the outside of the connecting pipe and will not rotate, the threaded sleeve will not be affected by vibration to rotate, thereby preventing the threaded sleeve from rotating and disengaging due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a specific schematic diagram of the fixing plate of the utility model;

[0016] Figure 3 It is a side view of the partial structure of the telescopic plate assembly of the utility model;

[0017] Figure numerals: 1, connecting pipe; 2, threaded pipe one; 3, threaded pipe two; 4, sealing ring one; 5, sealing ring two; 6, threaded sleeve; 7, hexagonal ring; 8, groove one; 9, rotating shaft; 10, telescopic plate assembly; 101, telescopic plate one; 102, rectangular groove; 103, telescopic plate two; 104, sliding groove; 105, sliding block; 106, spring; 107, trapezoidal groove; 108, trapezoidal rod; 11, fixing plate; 12, bolt; 13, groove two; 14, threaded hole; 15, magnetic block one; 16, magnetic block two; 17, positioning plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figures 1 to 3 As shown, a high-seal instrument pipe fitting comprises a connecting pipe 1, one end of the connecting pipe 1 is fixedly mounted with a threaded pipe 2, the end of the connecting pipe 1 away from the threaded pipe 2 is fixedly connected with a threaded pipe 3, the end of the threaded pipe 3 away from the connecting pipe 1 is provided with a sealing ring 4, the sealing ring 4 is provided with a sealing ring 5, the threaded pipe 3 is threadedly connected with a threaded sleeve 6, the connecting pipe 1 is fixedly provided with a hexagonal ring 7, the three side wall surfaces of the threaded sleeve 6 are respectively provided with grooves 8, and the interior of each groove 8 is movable. The hexagonal ring 7 is provided with a rotatable shaft 9, and the side wall surface of each shaft 9 is provided with a telescopic plate assembly 10 with a telescopic function. The end of each telescopic plate assembly 10 away from the shaft 9 is provided with a fixing plate 11, and each fixing plate 11 is threadedly connected with a bolt 12. The three side walls of the hexagonal ring 7 are respectively provided with grooves 13, and the inner wall surface of each groove 13 is provided with a threaded hole 14. It should be noted that when connecting the pipe 1, it is only necessary to insert the connecting end of the pipe into the inside of the threaded pipe 23, and then The sealing ring 1 4, the sealing ring 2 5, and the threaded sleeve 6 are sequentially sleeved on the pipeline, and the threaded sleeve 6 is threadedly connected to the threaded pipe 2 3. At this time, the threaded sleeve 6 will push the sealing ring 2 5 into the interior of the sealing ring 1 4, and the sealing ring 1 4 will also enter the interior of the threaded pipe 2 3, thereby achieving the purpose of connecting the pipe 1. In order to prevent the threaded sleeve 6 from rotating in the opposite direction and disengaging after the pipeline is vibrated, when the threaded sleeve 6 is rotated to gradually approach the connecting pipe 1 and reaches a certain position where it cannot continue to rotate, the six side wall surfaces of the threaded sleeve 6 correspond to the six side wall surfaces of the hexagonal ring 7 respectively, and then the three groups of telescopic plate assemblies 10 are rotated, and each group of telescopic plate assemblies 10 is stretched to the longest extent, so that the three fixing plates 11 are respectively placed in the interior of the three grooves 2 13, and finally the tail ends of the three bolts 12 are respectively threadedly connected to the interior of the adjacent threaded holes 14. Since the hexagonal ring 7 is installed on the outside of the connecting pipe 1 and will not rotate, the threaded sleeve 6 will not be affected by the vibration and rotate, thereby preventing the threaded sleeve 6 from rotating and disengaging due to vibration.

[0023] like Figures 1 to 3As shown, the telescopic plate assembly 10 includes a telescopic plate 101, and the side wall surface of each rotating shaft 9 is fixedly installed with a telescopic plate 101, and the side wall surface of each telescopic plate 101 is opened with a rectangular groove 102, and the interior of each rectangular groove 102 is movably installed with a telescopic plate 2 103, and each telescopic plate 2 103 is fixedly installed with a fixed plate 11 at one end away from the adjacent rotating shaft 9. It should be noted that by rotating the telescopic plate 101, the telescopic plate 101 will drive the rotating shaft 9 connected to it to rotate, and then the telescopic plate 2 103 will be pulled to the side away from the adjacent rotating shaft 9. The movement of the telescopic plate 2 103 will also drive the fixed plate 11 to move synchronously, so that the three fixed plates 11 can be respectively placed inside the three grooves 2 13.

[0024] like Figure 3 As shown, the telescopic plate assembly 10 also includes a slide groove 104, and the symmetrical two side walls in each rectangular groove 102 are provided with slide grooves 104, and a slider 105 is movably installed inside each slide groove 104, and each slider 105 is fixedly connected to the adjacent telescopic plate 2 103, and a spring 106 is fixedly installed on one side of each slide groove 104 close to the adjacent rotating shaft 9, and the free end of each spring 106 is fixedly connected to the adjacent slider 105, and the inner side wall surface of each rectangular groove 102 is provided with a plurality of equally spaced trapezoidal grooves 107, and a trapezoidal rod is movably installed inside each trapezoidal groove 107 108, each trapezoidal rod 108 is fixedly connected to the adjacent telescopic plate 2 103. It should be noted that the telescopic plate 2 103 slides back and forth inside the rectangular groove 102, and the telescopic plate 2 103 will drive the trapezoidal rod 108 connected to it to slide back and forth inside the corresponding trapezoidal groove 107. If the telescopic plate 2 103 is not pulled, the spring 106 will contract and drive the slider 105 connected to it to slide inside the corresponding slide groove 104, so that the telescopic plate 2 103 gradually approaches the adjacent rotating shaft 9. At this time, rotating the telescopic plate 1 101 can place the telescopic plate assembly 10 as a whole inside the groove 1 8 for storage.

[0025] like Figure 1 , Figure 3 As shown, the inner wall surface of each groove 8 is inlaid with two magnetic blocks 15, and the side wall surface of each fixed plate 11 is inlaid with two magnetic blocks 16. The magnetic blocks 16 and 15 are attracted to each other. It should be noted that if the telescopic plate 101 is rotated and placed inside the corresponding groove 8, so that the two magnetic blocks 16 on the corresponding fixed plate 11 are attracted to the two magnetic blocks 15 inside the corresponding groove 8, the telescopic plate 101 is installed inside the corresponding groove 8.

[0026] like Figures 1 to 3As shown, a positioning plate 17 is fixedly installed inside each groove 13, and the end of each fixing plate 11 away from the adjacent rotating shaft 9 is set in a convex arc surface. It should be noted that when the fixing plate 11 is rotated to the inside of the corresponding groove 13, the fixing plate 11 is fitted with the positioning plate 17, which facilitates the threaded connection of the tail end of the bolt 12 to the inside of the threaded hole 14.

[0027] like Figure 1 , Figure 2 As shown, the internal depths of the three grooves 8 and the three grooves 2 13 are the same, and the internal depth of the groove 8 is the same as the thickness of the telescopic plate 101. It should be noted that the main function of the internal depth of the groove 8 and the thickness of the telescopic plate 101 being the same is that when the three telescopic plates 101 are respectively placed inside the three grooves 8, it does not affect the use of tools to rotate the threaded sleeve 6.

[0028] In summary:

[0029] When connecting pipe 1, it is only necessary to insert the connecting end of the pipe into the interior of threaded pipe 23, and then sequentially sleeve the sealing ring 14, sealing ring 25, and threaded sleeve 6 on the pipe, and at the same time, thread the threaded sleeve 6 is threadedly connected to the threaded pipe 23. At this time, the threaded sleeve 6 will push the sealing ring 25 into the interior of the sealing ring 14, and the sealing ring 14 will also enter the interior of the threaded pipe 23, thereby achieving the purpose of connecting pipe 1. In order to prevent the threaded sleeve 6 from rotating in the opposite direction and disengaging after the pipe is vibrated, when the threaded sleeve 6 is rotated to make it gradually approach the connecting pipe 1 and reach a certain position When it is unable to continue rotating, the six side walls of the threaded sleeve 6 correspond to the six side walls of the hexagonal ring 7 respectively, and then the three groups of telescopic plate assemblies 10 are rotated, and each group of telescopic plate assemblies 10 is stretched to the longest extent, so that the three fixing plates 11 are respectively placed inside the three grooves 13, and finally the tail ends of the three bolts 12 are respectively threadedly connected to the inside of the adjacent threaded holes 14. Since the hexagonal ring 7 is installed on the outside of the connecting pipe 1 and will not rotate, the threaded sleeve 6 will not be affected by vibration and will not rotate, thereby preventing the threaded sleeve 6 from being detached due to vibration.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-seal instrument pipe fitting, comprising a connecting pipe (1), one end of the connecting pipe (1) is fixedly mounted with a threaded pipe (2), the end of the connecting pipe (1) away from the threaded pipe (2) is fixedly connected with a threaded pipe (3), the end of the threaded pipe (3) away from the connecting pipe (1) is internally provided with a sealing ring (4), the interior of the sealing ring (4) is provided with a sealing ring (5), the threaded pipe (3) is threadedly connected with a threaded sleeve (6), the fixed sleeve on the connecting pipe (1) is provided with a hexagonal ring (7), characterized in that: The three side walls of the threaded sleeve (6) are respectively provided with grooves one (8), a rotatable shaft (9) is movably installed inside each groove one (8), a telescopic plate assembly (10) with a telescopic function is arranged on the side wall of each shaft (9), a fixing plate (11) is arranged at one end of each telescopic plate assembly (10) away from the shaft (9), and a bolt (12) is threadedly connected to each fixing plate (11), and the three side walls of the hexagonal ring (7) are respectively provided with grooves two (13), and a threaded hole (14) is arranged on the inner wall of each groove two (13).

2. A high-seal instrument pipe fitting according to claim 1, characterized in that: The telescopic plate assembly (10) comprises a telescopic plate 1 (101), and the side wall surface of each rotating shaft (9) is fixedly mounted with the telescopic plate 1 (101), and the side wall surface of each telescopic plate 1 (101) is provided with a rectangular groove (102), and the interior of each rectangular groove (102) is movably mounted with a telescopic plate 2 (103), and the end of each telescopic plate 2 (103) away from the adjacent rotating shaft (9) is fixedly mounted with a fixed plate (11).

3. A high-seal instrument pipe fitting according to claim 2, characterized in that: The telescopic plate assembly (10) further comprises a slide groove (104), wherein the mutually symmetrical side wall surfaces in each rectangular groove (102) are provided with slide grooves (104), a slider (105) is movably installed inside each slide groove (104), and each slider (105) is fixedly connected to the adjacent telescopic plate 2 (103), a spring (106) is fixedly installed on one side of each slide groove (104) close to the adjacent rotating shaft (9), and the free end of each spring (106) is fixedly connected to the adjacent slider (105), and the inner side wall surface of each rectangular groove (102) is provided with a plurality of equally spaced trapezoidal grooves (107), and a trapezoidal rod (108) is movably installed inside each trapezoidal groove (107), and each trapezoidal rod (108) is fixedly connected to the adjacent telescopic plate 2 (103).

4. The high-seal instrument pipe fitting according to claim 1, characterized in that: The inner wall surface of each groove one (8) is inlaid with two magnetic blocks one (15), and the side wall surface of each fixed plate (11) is inlaid with two magnetic blocks two (16), and the magnetic blocks two (16) and the magnetic blocks one (15) are mutually attracted.

5. The high-seal instrument pipe fitting according to claim 1, characterized in that: A positioning plate (17) is fixedly installed inside each of the second grooves (13), and one end of each fixing plate (11) away from the adjacent rotating shaft (9) is arranged in a convex arc surface.

6. The high-seal instrument pipe fitting according to claim 1, characterized in that: The inner depths of the three grooves 1 (8) and the three grooves 2 (13) are the same, and the inner depth of the groove 1 (8) is the same as the thickness of the telescopic plate 1 (101).

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