CN217736600U

CN217736600U - Double-flange limiting expansion piece

Info

Publication number: CN217736600U
Application number: CN202221120841.2U
Authority: CN
Inventors: 洪文彬
Original assignee: Hutian Valve Manufacturing Co ltd
Current assignee: Hutian Valve Manufacturing Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-11-04
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a spacing expansion bend of two flanges, its technical scheme is: the telescopic pipe is characterized by comprising a first flange, wherein one side of the first flange is fixedly provided with a telescopic pipe, a limiting pipe is sleeved outside the telescopic pipe, one side of the limiting pipe is fixedly provided with a second flange, telescopic mechanisms are arranged inside the telescopic pipe and the limiting pipe, and limiting mechanisms are arranged outside the telescopic pipe and the limiting pipe; telescopic machanism includes the spring, and a spacing expansion bend of two flanges beneficial effect is: through the flexible distance of control flexible pipe and spacing pipe among telescopic machanism and stop gear, prevent that the pipeline from leading to flange joint department disconnection because of excess displacement, the elasticity that elasticity when the spring shrink produced for second connecting pipe and first connecting pipe drive second rubber sleeve and first rubber sleeve respectively and last with the internal diameter contact of pipeline and valve, thereby prevent that the rubber buffer of the flange joint department of first flange and pipeline or second flange and valve from directly receiving the impact, and then prevent to appear damaging and cause the leakage.

Description

Double-flange limiting expansion piece

Technical Field

The utility model relates to a spacing expansion bend technical field, concretely relates to spacing expansion bend of double flange.

Background

The spacing expansion bend of two flanges loose shell is formed by loose shell expansion joint and the combination of the spacing nozzle stub of a flange, and the spacing expansion bend of two flanges loose shell can prevent that the pipeline from leading to compensating joint's leakage and damage because of excessive displacement, and mainly used absorbs axial displacement and bears the pipeline loose shell connection of axial pressure thrust in the allowable displacement range, advantage: the flexible volume is big, simple to operate is swift.

The existing double-flange limiting expansion piece is usually used for connecting a pipeline and a valve, and a rubber pad is usually arranged at the joint of the double-flange limiting expansion piece and the pipeline and the valve, so that the rubber pad is easily damaged by liquid or gas impact for a long time, and the leakage phenomenon is easily caused.

Disclosure of Invention

Therefore, the utility model provides a spacing expansion bend of two flanges through telescopic machanism to the rubber pad of solving flange joint receives liquid or the easy problem that takes place to damage of gas shock for a long time.

In order to achieve the above object, the present invention provides the following technical solutions: a double-flange limiting expansion piece comprises a first flange, wherein one side of the first flange is fixedly provided with an expansion pipe, a limiting pipe is sleeved outside the expansion pipe, one side of the limiting pipe is fixedly provided with a second flange, expansion mechanisms are arranged inside the expansion pipe and the limiting pipe, and limiting mechanisms are arranged outside the expansion pipe and the limiting pipe;

telescopic machanism includes the spring, the spring is located inside the telescopic tube, the spring both ends are equipped with first protruding ring and second protruding ring respectively, first protruding ring one side is fixed and is equipped with first connecting pipe, the fixed cover of first protruding ring outside is equipped with first rubber ring, the outside cover of first connecting pipe is equipped with the spacing ring, the fixed cover of first connecting pipe one end is equipped with first rubber sleeve, two spouts have been seted up in the first connecting pipe outside, spacing ring one side and flexible pipe fixed connection, the inboard fixed two sliders that are equipped with of spacing ring, the fixed second connecting pipe that is equipped with in second protruding ring one side, the fixed cover of second protruding ring outside is equipped with the second rubber ring, the fixed second rubber sleeve that is equipped with in second connecting pipe one end.

Preferably, the limiting mechanism comprises a fixed plate and a movable plate, the fixed plate is fixedly sleeved outside the telescopic pipe, the movable plate is sleeved outside the limiting pipe and is in sliding connection with the limiting pipe, a plurality of guide bolts are inserted into the fixed plate and the movable plate, and a plurality of limiting bolts are inserted into the movable plate and the second flange.

Preferably, a plurality of guide bolts equally penetrate through the fixed plate, the movable plate and the second flange and are in sliding connection with the fixed plate, the movable plate and the guide bolts, and a plurality of first nuts are sleeved on the outer portions of the guide bolts.

Preferably, it is a plurality of the limit bolt all runs through fly leaf and second flange, and is a plurality of limit bolt all with fly leaf sliding connection, it is a plurality of limit bolt all with second flange fixed connection, it is a plurality of limit bolt one end all overlaps and is equipped with nut two.

Preferably, the fixed cover in flexible pipe outside is equipped with solid fixed ring, gu fixed ring and spacing inside pipe wall sliding connection, be equipped with the third rubber ring between flexible pipe and the spacing pipe, the third rubber ring is located between solid fixed ring and the spacing ring.

Preferably, one end of the spring is fixedly connected with the first convex ring, and the other end of the spring is fixedly connected with the second convex ring.

Preferably, the first convex ring and the second convex ring are both connected with the inner wall of the telescopic pipe in a sliding manner.

Preferably, the first connecting pipe is respectively connected with the second flange and the limiting ring in a sliding manner, and the limiting ring is connected with the limiting pipe in a sliding manner.

Preferably, the sliding block extends into the inner wall of the sliding groove and is in sliding connection with the sliding groove.

Preferably, the second connecting pipe is respectively connected with the first flange and the telescopic pipe in a sliding manner.

The embodiment of the utility model provides a have following advantage:

1. the effect of controlling the telescopic distance between the telescopic pipe and the limiting pipe is achieved through the limiting mechanism, the connection between the pipeline and the valve is compensated, the disconnection of the flange joint caused by excessive displacement of the pipeline is prevented, further leakage and damage are prevented, and meanwhile, the first flange and the second flange are convenient to mount and dismount with the flanges at the pipeline and the valve;

2. through the elasticity that produces during because of the elasticity of spring shrink among the telescopic machanism for second connecting pipe and first connecting pipe drive respectively the second rubber sleeve last with the internal diameter contact of pipeline and valve with first rubber sleeve, thereby prevent that first flange and pipeline or second flange from directly receiving the impact with the rubber buffer of the flange joint department of valve, and then prevent to appear damaging and cause the leakage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is an overall perspective view provided by the present invention;

fig. 2 is a front perspective view of the present invention;

fig. 3 is an enlarged view of a point a in fig. 2 according to the present invention;

fig. 4 is a perspective view of the spacing ring provided by the present invention;

fig. 5 is a perspective view of the connection relationship between the first connection pipe and the first rubber sleeve provided by the present invention.

In the figure: the device comprises a first flange 1, a telescopic pipe 2, a fixed plate 3, a movable plate 4, a limiting pipe 5, a second flange 6, a guide bolt 7, a limiting bolt 8, a first connecting pipe 9, a first rubber sleeve 10, a sliding chute 11, a sliding block 12, a fixing ring 13, a first rubber ring 14, a first convex ring 15, a spring 16, a second convex ring 17, a second rubber ring 18, a second connecting pipe 19, a second rubber sleeve 20, a fixing ring 21 and a third rubber ring 22.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-5, the utility model provides a double-flange limiting expansion piece, which comprises a first flange 1, an expansion pipe 2 is fixedly arranged on one side of the first flange 1, a limiting pipe 5 is sleeved outside the expansion pipe 2, a second flange 6 is fixedly arranged on one side of the limiting pipe 5, expansion mechanisms are arranged inside the expansion pipe 2 and the limiting pipe 5, and limiting mechanisms are arranged outside the expansion pipe 2 and the limiting pipe 5;

the telescopic mechanism comprises a spring 16, the spring 16 is arranged inside the telescopic pipe 2, a first convex ring 15 and a second convex ring 17 are respectively arranged at two ends of the spring 16, a first connecting pipe 9 is fixedly arranged at one side of the first convex ring 15, a first rubber ring 14 is fixedly sleeved outside the first convex ring 15, a limiting ring 13 is sleeved outside the first connecting pipe 9, a first rubber sleeve 10 is fixedly sleeved at one end of the first connecting pipe 9, two sliding grooves 11 are formed in the outer side of the first connecting pipe 9, one side of the limiting ring 13 is fixedly connected with the telescopic pipe 2, two sliding blocks 12 are fixedly arranged inside the limiting ring 13, a second connecting pipe 19 is fixedly arranged at one side of the second convex ring 17, a second rubber ring 18 is fixedly sleeved outside the second convex ring 17, and a second rubber sleeve 20 is fixedly arranged at one end of the second connecting pipe 19;

in this embodiment, in order to prevent the rubber pad at the flange connection between the two-flange position-limiting expansion device and the pipeline and the valve from being directly impacted by liquid or gas, the expansion distance is adjusted by a position-limiting mechanism, when the expansion device is installed, the first flange 1 and the second flange 6 at two sides are respectively connected with the flanges on the pipeline and the valve, so that the second rubber sleeve 20 is in contact with the inner diameter of the pipeline, the second rubber sleeve 20 drives the second connecting pipe 19 to contract towards the inside of the expansion pipe 2, the first rubber sleeve 10 is in contact with the inner diameter of the interface of the valve, the first rubber sleeve 10 drives the first connecting pipe 9 to contract towards the inside of the expansion pipe 2, so that the second connecting pipe 19 and the first connecting pipe 9 respectively drive the second convex ring 17 and the first convex ring 15 to slide towards the inside of the expansion pipe 2 along the inner wall of the expansion pipe 2, so that the spring 16 contracts, meanwhile, the second convex ring 17 drives the second rubber ring 18 to slide along the inner wall of the expansion pipe 2, the first rubber ring 15 drives the first rubber ring 14 to slide along the inner wall of the expansion pipe 2, when liquid or gas flows along the second connecting pipe 19 and the first connecting pipe 9, the second connecting ring 17, and the second connecting ring 15 are connected with the elastic fixing ring, the elastic fixing ring 21, the third rubber sleeve 2, the elastic fixing ring 21 is arranged on the inner wall of the expansion pipe, the third rubber sleeve 2, the third rubber sleeve 21, the elastic fixing ring 21 and the elastic fixing ring 21, the elastic ring 21 are arranged on the inner wall of the expansion pipe, the inner wall of the expansion pipe, the third elastic fixing ring 15, the first connecting pipe 9 is respectively connected with the second flange 6 and the limiting ring 13 in a sliding manner, and the limiting ring 13 is connected with the limiting pipe 5 in a sliding manner;

wherein, in order to realize the purpose of adjusting the distance of stretching out and drawing back through stop gear, this device adopts following technical scheme to realize: the limiting mechanism comprises a fixed plate 3 and a movable plate 4, the fixed plate 3 is fixedly sleeved outside the telescopic pipe 2, the movable plate 4 is sleeved outside the limiting pipe 5 and is in sliding connection with the limiting pipe 5, a plurality of guide bolts 7 are inserted inside the fixed plate 3 and the movable plate 4, a plurality of limiting bolts 8 are inserted inside the movable plate 4 and the second flange 6, the plurality of guide bolts 7 respectively penetrate through the fixed plate 3, the movable plate 4 and the second flange 6 and are in sliding connection with the fixed plate 3, the movable plate 4 and the guide bolts 7, a plurality of first nuts are sleeved outside the plurality of guide bolts 7, a plurality of first nuts 8 penetrate through the movable plate 4 and the second flange 6, a plurality of second nuts 8 are slidably connected with the movable plate 4, a plurality of second limiting bolts 8 are fixedly connected with the second flange 6, one ends of the plurality of second nuts 8 are sleeved, and the distance which can be moved leftwards along the second limiting bolts 8 by rotating the second nuts on the second limiting bolts 8 on the movable plate 4 is adjusted, the sliding distance of the guide bolt 7 along the movable plate 4 and the second flange 6 is controlled by rotating the distance between the first nut and the second nut on the right side of the guide bolt 7, so that the first flange 1 drives the fixed plate 3 to move through the telescopic tube 2 when moving, the fixed plate 3 drives the guide bolt 7 to slide along the movable plate 4 and the second flange 6 through the first nut and the second nut on the left side of the guide bolt 7, when the guide bolt 7 moves leftwards, the first nut on the right side of the guide bolt 7 contacts the movable plate 4 and drives the movable plate 4 to slide along the limit bolt 8, when the first nut contacts the second nut on the movable plate 4 and the limit bolt 8, the movement is stopped, so that the distance that the telescopic tube 2 moves leftwards is controlled, when the guide bolt 7 moves rightwards, the first nut on the right side of the guide bolt 7 contacts the second flange 6, the movement is stopped, further controlling the distance of the telescopic pipe 2 moving rightwards, thereby achieving the effect of controlling the telescopic distance between the telescopic pipe 2 and the limiting pipe 5;

wherein, in order to realize the purpose of preventing the first connecting pipe 9 and the second connecting pipe 19 from completely separating from the telescopic pipe 2, the device adopts the following technical scheme: the first connecting pipe 9 is respectively connected with the second flange 6 and the limiting ring 13 in a sliding manner, the limiting ring 13 is connected with the limiting pipe 5 in a sliding manner, the sliding block 12 extends into the inner wall of the sliding groove 11 and is connected with the sliding groove 11 in a sliding manner, the second connecting pipe 19 is respectively connected with the first flange 1 and the telescopic pipe 2 in a sliding manner, the limiting ring 13 is fixed with the telescopic pipe 2, the sliding block 12 inside the limiting ring 13 extends into the sliding groove 11 outside the first connecting pipe 9, so that the first connecting pipe 9 cannot be separated from the telescopic pipe 2, and the first connecting pipe 9 cannot be separated from the telescopic pipe 2 through the matching of the first convex ring 15, the spring 16 and the second convex ring 17.

The utility model discloses a use as follows: when the utility model is used, the effect of controlling the telescopic distance between the telescopic tube 2 and the limit tube 5 is achieved by rotating the distance that the second adjusting movable plate 4 of the nut on the limit bolt 8 can move leftwards along the limit bolt 8 and by rotating the distance between the first nut and the second nut on the right side of the guide bolt 7, the first flange 1 and the second flange 6 on the two sides are respectively connected with the pipeline and the flange on the valve, so that the second rubber sleeve 20 is contacted with the inner diameter of the pipeline, the second rubber sleeve 20 drives the second connecting tube 19 to contract towards the inside of the telescopic tube 2, the first rubber sleeve 10 is contacted with the interface inner diameter of the valve, the first rubber sleeve 10 drives the first connecting tube 9 to contract towards the inside of the telescopic tube 2, and the second connecting tube 19 and the first connecting tube 9 respectively drive the second convex ring 17 and the first convex ring 15 to slide towards the inside of the telescopic tube 2 along the inner wall of the telescopic tube 2, further, the spring 16 is contracted, meanwhile, the second convex ring 17 drives the second rubber ring 18 to slide along the inner wall of the telescopic pipe 2, the first convex ring 15 drives the first rubber ring 14 to slide along the inner wall of the telescopic pipe 2, so as to prevent the leakage phenomenon when liquid or gas circulates along the second connecting pipe 19 and the first connecting pipe 9, through the elasticity of the spring 16, the second connecting pipe 19 and the first connecting pipe 9 further drive the second rubber sleeve 20 to continuously contact with the inner diameters of the pipeline and the valve with the first rubber sleeve 10, so as to prevent the leakage, the outer part of the telescopic pipe 2 is fixedly sleeved with a fixing ring 21, the fixing ring 21 is slidably connected with the inner wall of the limiting pipe 5, a third rubber ring 22 is arranged between the telescopic pipe 2 and the limiting pipe 5, the third rubber ring 22 is arranged between the fixing ring 21 and the limiting ring 13, one end of the spring 16 is fixedly connected with the first convex ring 15, the other end of the spring 16 is fixedly connected with the second convex ring 17, the first convex ring 15 and the second convex ring 17 are both connected with the inner wall of the extension tube 2 in a sliding way, the first connecting tube 9 is respectively connected with the second flange 6 and the limiting ring 13 in a sliding way, and the limiting ring 13 is connected with the limiting tube 5 in a sliding way.

The above is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims

1. The utility model provides a spacing expansion bend of two flanges, includes first flange (1), its characterized in that: a telescopic pipe (2) is fixedly arranged on one side of the first flange (1), a limiting pipe (5) is sleeved outside the telescopic pipe (2), a second flange (6) is fixedly arranged on one side of the limiting pipe (5), telescopic mechanisms are arranged inside the telescopic pipe (2) and the limiting pipe (5), and limiting mechanisms are arranged outside the telescopic pipe (2) and the limiting pipe (5);

telescopic machanism includes spring (16), inside flexible pipe (2) is located in spring (16), spring (16) both ends are equipped with first protruding ring (15) and second protruding ring (17) respectively, first protruding ring (15) one side is fixed and is equipped with first connecting pipe (9), first protruding ring (15) outside fixed cover is equipped with first rubber ring (14), first connecting pipe (9) outside cover is equipped with spacing ring (13), the fixed cover of first connecting pipe (9) one end is equipped with first rubber sleeve (10), two spout (11) have been seted up in first connecting pipe (9) outside, spacing ring (13) one side and flexible pipe (2) fixed connection, spacing ring (13) inboard is fixed and is equipped with two slider (12), second protruding ring (17) one side is fixed and is equipped with second connecting pipe (19), the fixed cover of second protruding ring (17) outside is equipped with second rubber ring (18), second connecting pipe (19) one end is fixed and is equipped with second rubber sleeve (20).

2. A double-flange limit expansion device according to claim 1, characterized in that: limiting mechanism includes fixed plate (3) and fly leaf (4), flexible pipe (2) outside is located to fixed cover of fixed plate (3), spacing pipe (5) outside and with spacing pipe (5) sliding connection are located to fly leaf (4) cover, fixed plate (3) and fly leaf (4) inside grafting have a plurality of guide bolt (7), fly leaf (4) and second flange (6) inside grafting have a plurality of spacing bolt (8).

3. A double-flange limit expansion device according to claim 2, characterized in that: it is a plurality of guide bolt (7) are equallyd divide and are run through fixed plate (3), fly leaf (4) and second flange (6) respectively and with fixed plate (3), fly leaf (4) and guide bolt (7) sliding connection, it is a plurality of guide bolt (7) outside all is equipped with a plurality of nuts one.

4. A double-flange limit expansion device according to claim 2, characterized in that: it is a plurality of stop bolt (8) all run through fly leaf (4) and second flange (6), and are a plurality of stop bolt (8) all with fly leaf (4) sliding connection, it is a plurality of stop bolt (8) all with second flange (6) fixed connection, it is a plurality of stop bolt (8) one end all is equipped with nut two.

5. A double-flange limit expansion device according to claim 1, characterized in that: the fixed cover in flexible pipe (2) outside is equipped with solid fixed ring (21), gu fixed ring (21) and spacing pipe (5) inner wall sliding connection, be equipped with third rubber ring (22) between flexible pipe (2) and spacing pipe (5), third rubber ring (22) are located between solid fixed ring (21) and spacing ring (13).

6. The double-flange limit expansion device according to claim 1, characterized in that: one end of the spring (16) is fixedly connected with the first convex ring (15), and the other end of the spring (16) is fixedly connected with the second convex ring (17).

7. A double-flange limit expansion device according to claim 1, characterized in that: the first convex ring (15) and the second convex ring (17) are connected with the inner wall of the extension tube (2) in a sliding way.

8. A double-flange limit expansion device according to claim 1, characterized in that: the first connecting pipe (9) is respectively connected with the second flange (6) and the limiting ring (13) in a sliding mode, and the limiting ring (13) is connected with the limiting pipe (5) in a sliding mode.

9. A double-flange limit expansion device according to claim 1, characterized in that: the sliding block (12) extends into the inner wall of the sliding groove (11) and is connected with the sliding groove (11) in a sliding mode.

10. The double-flange limit expansion device according to claim 1, characterized in that: the second connecting pipe (19) is respectively connected with the first flange (1) and the extension pipe (2) in a sliding manner.