TWM639748U - Bundled tube retaining device for gas valve pipe joint - Google Patents

Abstract

An anti-detachment device for a pipe joint of a gas valve, which includes a pipe joint that includes interconnected rotating Section, joint section and backstop buckling section, the backstop jamming section has conical pipe expansion flanges connected to each other, and the large diameter end of each tapered pipe expansion flange faces the joint section and is connected with another tapered pipe expansion flange. The small-diameter end of the rim is connected to form a limit ring groove; the gas pipe is an elastic structure and one end of the sleeve is set with a backstop clamping section and abuts against the joint section; one end of the bundle tube is combined with the joint section and the other end extends to the backstop clamping section The outer peripheral side of the junction section is set with a gas pipe. The pipe wall of the gas pipe is pressed by the inner wall of the bundled pipe and tightly combined with the backstop clamping section. The gas pipe is pressed by the bundled pipe and deforms the inner wall to form a limit ring groove. The inner convex clamping part is fixed against the large-diameter end of the tapered pipe expansion flange to form a firm combination that prevents the gas pipe from bursting.

Description

Bundle tube anti-detachment device for gas valve pipe joint

The invention relates to the technical field of collecting pipe equipment, in particular to a bundle pipe preventing device for pipe joints of gas valves.

At present, during the cooking process, in order to avoid the interruption of cooking due to the exhaustion of gas, the catering industry will share multiple gas cylinders as fuel for the same or multiple fast stoves, that is, each gas cylinder A manifold is respectively connected with the gas stove, and a switch valve can be provided between each manifold and the gas stove.

In this way, even if there is no need to install a gas storage tank, there can be sufficient reserves. When the gas in one of the gas barrels is used up, the gas in the other gas barrel can be replenished immediately, so that the cooking operation can continue.

The collection pipe is as announced in the new patent No. M552087, which uses a plurality of gas cylinders to connect the gas pipes through a three-way switch to lead to the fast stove as fuel supply; the gas pipes connected to the three-way switch An anti-backflow device can be installed between them. The anti-backflow device includes a connecting pipe section that can be screwed into the threaded pipe section of the three-way switch, and a pipe joint is provided at one end of the connecting pipe section to connect with the gas pipe.

The anti-backflow device of the above-mentioned patent can prevent the plurality of gas cylinders from backflowing each other during use; The friction force formed by the inner wall of the gas pipe in the set is only supported, and it is not very strong. If the gas barrel connected to the gas pipe is a new barrel, because the new gas barrel is filled with gas and the pressure is high, when the gas barrel is opened, It is easy to explode because the bonding force between the gas pipe and the pipe joint cannot bear the instantaneous pressure released by the new gas barrel, causing the danger of gas leakage in the barrel.

This invention creates a bundle tube anti-detachment device for gas valve pipe joints, including:

A pipe joint, which includes a rotating section connected to each other, a joint section and a backstop buckling section, the joint section is located between the turning section and the backstop buckling section, and the backstop buckling section has a conical expanded pipe connected to each other For the flange, the large-diameter end of each tapered pipe-expanding flange faces the joint section and connects with the small-diameter end of another tapered pipe-expanding flange to form a limiting ring groove.

The gas pipe is a structure of elastically deformable material, and one end of the gas pipe fits the backstop clamping section and abuts against the joint section.

And a bundle tube, one end of which is combined with the joint section and the other end extends to the outer peripheral side of the backstop clamping section and is set with the gas pipe. The wall thickness of the gas pipe is greater than the inner wall of the bundle tube and the backstop The distance between the outer diameters of the clamping section is such that the tube wall of the gas pipe is pressed by the inner wall of the bundle tube and tightly combined with the backstop clamping section, and the gas pipe is pressed by the bundle tube and deforms the inner wall to form a The inner convex clamping portion of the limiting ring groove is clamped against the large diameter end of the tapered pipe expanding flange and fixed.

In this creation, through the mutual cooperation of the above structures, one end of the bundle tube is combined and fixed with the joint section of the pipe joint, and then one end of the gas pipe is set with the backstop clamping section and pressed against the joint section, so that the pipe wall of the gas pipe When being pressed by the inner wall of the bundled tube and tightened with the backstop section, the inner wall of the gas pipe is pressed by the bundled tube to form an inner convex clamping part extending into the limit ring groove, and the inner convex clamping part is stuck against the cone The large-diameter end of the shaped expansion pipe flange is fixed, and forms a firm combination of inner expansion and outer tightness, effectively supporting the gas pipe against the internal pressure of the gas barrel to avoid bursting from the pipe joint and preventing gas leakage. To achieve the purpose and effectiveness of this creation.

Please refer to Figures 1 to 10, this invention creates a bundle tube anti-detachment device for gas valve pipe joints, including:

A pipe joint 10, which includes a rotating section 11, a coupling section 12, and a backstop locking section 13 connected to each other. The coupling section 12 is located between the rotating section 11 and the backstop locking section 13. There are interconnected tapered pipe expansion flanges 131, the large diameter end of each tapered pipe expansion flange 131 faces the joint section 12 and is connected with the small diameter end of another tapered pipe expansion flange 131 to form a stop ring Ditch 132.

The gas pipe 20 is made of an elastically deformable material, and one end of the gas pipe 20 fits the backstop engaging section 13 and abuts against the engaging section 12 .

And the bundle tube 30, one end of which is combined with the combination section 12 and the other end extends to the outer peripheral side of the backstop clamping section 13 and sets the gas pipe 20. The wall thickness of the gas pipe 20 is greater than that of the bundle tube 30 The distance between the inner wall and the outer diameter of the backstop clamping section 13 is such that the tube wall of the gas pipe 20 is pressed by the inner wall of the bundle tube 30 and tightly combined with the backstop clamping section 13, and the gas pipe 20 is bound by the inner wall of the bundle tube 30. The bundle tube 30 compresses and deforms the inner wall to form an inwardly convex clamping portion 21 extending into the limiting ring groove 132 , and the inwardly convex clamping portion 21 is clamped against the large-diameter end of the tapered tube expanding flange 131 to be fixed.

The aforementioned are the main technical features of the main embodiment of this creation, which corresponds to the content of the first item of the scope of patent application of this case, so that the purpose and implementation type of this creation can be known in detail, and the technical features described in the scope of other subsidiary applications are for The detailed description or additional technical features of the first item of the patent application scope are not used to limit the scope of the first item of the patent application scope. It should be known that the first item of the patent application scope in this case does not necessarily include the description of the other subsidiary application patent scopes technical characteristics.

Continuing the above content, further describe the implementation mode, actual use situation and achieved effects of this creation in detail. As shown in the first to third figures, the combination of this creation is to combine one end sleeve of the bundle tube 30 with the pipe joint 10. The joint section 12 is fixed so that the other end extends to the outer peripheral side of the backstop joint section 13, and one end of the gas pipe 20 is set with the backstop joint section 13 and pressed against the joint section 12 to form the structure shown in the second figure; As shown in the third figure, the wall thickness of the gas pipe 20 is greater than the distance between the inner wall of the bundle pipe 30 and the outer diameter of the backstop clamping section 13, so that the wall of the gas pipe 20 is bounded by the bundle pipe 30. The inner wall of the gas pipe 20 is pressed by the inner wall of the clamping section 13 to form an inner convex locking part 21 extending into the limit ring groove 132, and the inner convex locking part 21 is stuck against the large-diameter end of the tapered pipe expanding flange 131 and fixed.

Therefore, compared with the aforementioned conventional patents, the connection between the gas pipe and the pipe joint is only a simple set, which will cause the danger of gas leakage due to bursting due to the excessive instantaneous pressure released in the barrel; One end of the bundle tube 30 is set in the joint section 12 of the pipe joint 10 and fixed, and then one end of the gas pipe 20 is set with the backstop joint section 13 and pressed against the joint section 12, so that the pipe wall of the gas pipe 20 is bound by the inside of the bundle pipe 30. The inner wall of the gas pipe 20 is pressed by the bundle tube 30 to form an inner convex clamping portion 21 extending into the limit ring groove 132, and the inner convex clamping portion 21 is clamped. Arresting against the large diameter end of the tapered pipe expansion flange 131, and forming a firm combination where the inner side is expanded and the outer side is tight, it can effectively support the gas pipe 20 against the internal pressure of the gas barrel to avoid bursting from the pipe joint 10, and prevent The better airtight safety effect of gas leakage does have the advancement of safe use.

Further describe the feature of each element of this creation in detail below, as shown in the 3rd to 5th figure, this beam pipe 30 comprises the small-diameter sleeve section 31 that is connected with each other, the large diameter compels group section 32, and this small-diameter sleeve section 31 is combined with the combination section 12 and makes the large-diameter forcing section 32 set the gas pipe 20. The large-diameter forcing section 32 includes a stressed area 321 and an unstressed area 325. The unstressed area 325 Keep the original tubular shape and the force-bearing area 321 is compressed and deformed inwardly (from the third figure to the structure in the fifth figure), the force-bearing area 321 squeezes the gas pipe 20 inwardly, and the force-bearing area 321 forces the inwardly convex clamping portion 21 to go deep into the limiting ring groove 132 to form more contact area for clamping and fixing; therefore, through the force of the force-bearing area 321, it compresses and deforms inwardly to squeeze the tube wall of the gas pipe 20, The inner convex clamping portion 21 of the gas pipe 20 is deeply inserted into the limiting ring groove 132 to form a more contact area and firmly combined with the pipe joint 10 , effectively preventing the gas pipe 20 from bursting from the pipe joint 10 .

In this embodiment, the small-diameter fitting section 31 is combined with the combining section 12 as a tight-fit combination; therefore, the small-diameter fitting section 31 can be formed by being forced by the combining section 12 through the tight-fit combination. The best firm combination, and the best airtight safety effect to prevent gas leakage.

As shown in the sixth figure, further cooperate with the leak-proof glue A between the small-diameter sleeve section 31 and the joint section 12; therefore, the combination of the small-diameter sleeve section 31 and the joint section 12 sets , further through the anti-leakage glue A to achieve a better airtight safety effect to prevent gas leakage.

As shown in the seventh and eighth figures, the coupling section 12 has an external thread 121, and the small-diameter fitting section 31 has an internal thread 311, and the internal thread 311 provides the small-diameter fitting section 31 of the bundle tube 30 and the coupling section. 12 external threads 121 screw group combination; therefore, the combination of the bundle tube 30 and the pipe joint 10 through the internal thread 311 and the external thread 121 screw group occlusion further improves the firmness of the combination, and fixes the stability of the gas pipe 20, effectively preventing The gas pipe 20 falls off and explodes, and the better airtightness and safe use effect of gas leakage.

As shown in Figures 9 and 10, the large-diameter forcing group section 32 further has an engaging thread 322 disposed on the inner wall, and the engaging thread 322 provides an engaging and fixing effect relative to the outer pipe wall of the gas pipe 20; therefore, The outer pipe wall of the gas pipe 20 is occluded by the engaging thread 322 to further improve the firmness of the gas pipe 20 , effectively preventing the gas pipe 20 from falling off and bursting, and the gas leaking has a better airtight safety effect.

As shown in Figures 1 and 5, the diameter of the reverse locking section 13 is smaller than the diameter of the coupling section 12, and the coupling section 12 has an annular surface 122 connecting the reverse locking section 13, and the annular surface 122 provides a sleeve The end of the gas pipe 20 of the backstop locking section 13 is abutted against and fixed, the large-diameter forcing section 32 has a tapered arc-guiding surface 323, and the tapered arc-guiding surface 323 is close to the small-diameter fitting section 31; Therefore, by connecting the tapered arc guide surface 323 to the small-diameter fitting section 31, the tapered arc-shaped inner surface thereof can provide an assembly guide for the gas pipe 20 set and the backstop locking section 13, so that The assembly of the gas pipe 20 can be easily nested against the firm joint of the annular surface 122 .

As shown in the fifth figure, the large-diameter forced group section 32 further has a viewing window hole 324 close to the annular surface 122; The combination of the gas pipe 20 has passed through the backstop fastening section 13, and it is confirmed that the gas pipe 20 has been firmly set with the backstop fastening section 13 to ensure the firmness of the gas pipe 20.

As shown in the fifth figure, the diameter of the rotating section 11 is greater than the diameter of the coupling section 12, and the rotating section 11 provides the abutting position of the small diameter fitting section 31 set of the coupling section 12; therefore, by the diameter being larger than the coupling section 12 The large-diameter structure of the rotating section 11 of the coupling section 12 provides the small-diameter fitting section 31 with an abutting position, so that the correct position of the small-diameter fitting section 31 set with the coupling section 12 can be confirmed to speed up the assembly operation.

10: pipe joint 11: Rotating section 12: Combined segment 121: external thread 122: ring joint surface 13: Backstop sticking section 131: Conical expansion flange 132: limit ring groove 20: gas pipe 21: Inner convex card part 30: beam tube 31: Small diameter fitting section 311: internal thread 32: Large diameter forced group 321: force area 322: bite thread 323: tapered arc guide surface 324: window hole 325: Unstressed area A: Anti-leak glue

The first picture is a three-dimensional exploded schematic diagram of this creation. The second picture is a schematic diagram of the three-dimensional combination of this creation. The third figure is a schematic cross-sectional view of line III-III in the second figure. The fourth picture is a three-dimensional combination schematic diagram of this creation with force-bearing areas and force-free areas in the large-diameter forced group. The fifth figure is a schematic cross-sectional view of the V-V line segment in the fourth figure. Figure 6 is a schematic cross-sectional view of further providing leak-proof glue between the small-diameter fitting section and the joint section in Figure 5 . The seventh picture is a three-dimensional exploded schematic diagram of this creation with external threads on the joint section and internal threads on the small-diameter fitting section. Figure 8 is a schematic cross-sectional view of the combination of the structure in Figure 7 and the processing of the large-diameter forced section with a stressed area and a non-stressed area. Figure 9 is a three-dimensional exploded schematic diagram of the occlusal thread ring set on the inner wall in the large-diameter forced group section of this creation. Figure 10 is a schematic cross-sectional view of the occlusal thread that is arranged around the inner wall in the large-diameter forcing group section in Figure 5 .

10: pipe joint

11: Rotating section

12: Combined segment

122: ring joint surface

13: Backstop sticking section

131: Conical expansion flange

132: limit ring groove

20: gas pipe

30: beam tube

31: Small diameter fitting section

32: Large diameter forced group

324: window hole

Claims (9)

An anti-detachment device for a gas valve pipe joint, comprising: A pipe joint, which includes a rotating section connected to each other, a joint section and a backstop buckling section, the joint section is located between the turning section and the backstop buckling section, and the backstop buckling section has a conical expanded pipe connected to each other flange, the large-diameter end of each tapered pipe-expanding flange faces the joint section and connects with the small-diameter end of another tapered pipe-expanding flange to form a limiting ring groove; The gas pipe is a structure of elastically deformable material, and one end of the gas pipe is fitted with the backstop clamping section and abuts against the joint section; And a bundle tube, one end of which is combined with the joint section and the other end extends to the outer peripheral side of the backstop clamping section and is set with the gas pipe. The wall thickness of the gas pipe is greater than the inner wall of the bundle tube and the backstop The distance between the outer diameters of the clamping section is such that the tube wall of the gas pipe is pressed by the inner wall of the bundle tube and tightly combined with the backstop clamping section, and the gas pipe is pressed by the bundle tube and deforms the inner wall to form a The inner convex clamping portion of the limiting ring groove is clamped against the large diameter end of the tapered pipe expanding flange and fixed. The bundle tube anti-detachment device of the gas valve pipe joint according to claim 1, wherein the bundle tube includes a small-diameter fitting section and a large-diameter forcing section connected to each other, and the small-diameter fitting section and the joint section are sleeved together. Combining and making the large-diameter forced section cover the gas pipe, the large-diameter forced section includes a stressed area and an unstressed area, the unstressed area maintains the original tube shape and the stressed area is stressed Inwardly compressed and deformed, the force-bearing area presses the gas pipe inwardly, and the force-bearing area forces the inwardly convex clamping part to go deep into the limiting ring groove to form more contact area for clamping and fixing. The anti-detachment device for the bundled pipe joint of the gas valve according to claim 2, wherein the small-diameter sleeve section and the joint section set are combined into a tight fit and fixed. The anti-loosening device of the gas valve pipe joint according to claim 2, wherein the anti-leakage glue provided between the small-diameter fitting section and the joint section is further matched. The bundle tube anti-detachment device of the gas valve pipe joint according to claim 2, wherein the joint section has an external thread, and the small-diameter fitting section has an internal thread, and the internal thread provides a small-diameter fitting section of the bundle tube Combined with the external thread screw group of the joint section. The anti-detachment device of the gas valve pipe joint according to claim 2, wherein the large-diameter forcing section further has an engaging thread arranged on the inner wall, and the engaging thread relatively engages the outer pipe wall of the gas pipe form a fixation effect. The anti-detachment device of the gas valve pipe joint according to claim 1, wherein the diameter of the reverse locking section is smaller than the diameter of the joint section, and the joint section has an annular surface connected to the reverse locking section. The ring joint surface is provided for abutting and fixing the end of the gas pipe of the backstop clamping section. The large-diameter forcing section has a tapered arc-guiding surface, and the tapered arc-guiding surface is close to the small-diameter fitting section. The anti-detachment device of the gas valve pipe joint according to claim 7, wherein the large-diameter forcing section further has a window hole close to the ring joint surface. The anti-detachment device of the gas valve pipe joint according to claim 2, wherein the diameter of the rotating section is larger than the diameter of the connecting section, and the rotating section provides an abutting position for the small-diameter fitting section to fit the connecting section.

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