CN212691148U

CN212691148U - Double-flange loose sleeve limiting expansion joint

Info

Publication number: CN212691148U
Application number: CN202021218443.5U
Authority: CN
Inventors: 刘刚
Original assignee: Wuxi Xiangtong Pipe Valve Co Ltd
Current assignee: Wuxi Xiangtong Pipe Valve Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-12
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to an expansion joint equipment technical field provides a spacing expansion joint of two flange loose sleeves, including nozzle stub and first flange, first flange cup joints on the nozzle stub, and the gland has been cup jointed in the activity on the nozzle stub, has pegged graft the long screw rod of a plurality of parallels in first flange and the gland, is provided with fixed cover on the nozzle stub, and fixed cover cup joints on the long screw rod. The utility model overcomes prior art's is not enough, reasonable in design, and compact structure has solved the spacing expansion joint of current two flanges and has had flexible volume undersize, influences the buffering effect, and the screw rod produces not hard up with the nut easily in long-time use simultaneously, influences the problem of connection effect, the utility model discloses a simple structure combination has improved the flexible volume of pipeline, has improved the buffering effect, can also provide the radial force of screw rod simultaneously, prevents that screw rod and screw from droing, improves the connection effect between the pipeline, improves sealing performance then.

Description

Double-flange loose sleeve limiting expansion joint

Technical Field

The utility model relates to an expansion joint equipment technical field, concretely relates to spacing expansion joint of two flange loose sleeves.

Background

The double-flange limit expansion joint is composed of main components such as a body, a sealing ring, a gland and an expansion short pipe. A limiting device is additionally arranged on the basis of the original performance of the loose tube expansion joint, and double nuts are used for locking at the position with the maximum expansion amount. The pipeline can freely stretch out and draw back in the allowed stretching amount, and once the maximum stretching amount is exceeded, the limiting effect is achieved, so that the safe operation of the pipeline is ensured, and the pipeline stretching device is particularly suitable for connection in pipelines with vibration or certain inclination and turning.

The traditional double-flange limit expansion joint has the defects that the expansion amount is too small, so that the buffering effect is influenced; meanwhile, the screw rod and the nut can be loosened in the long-term use process, so that the pipeline connection effect is poor, and the sealing performance is influenced.

Therefore, a double-flange loose tube limit expansion joint is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a spacing expansion joint of two flange loose sleeves has overcome the not enough of prior art, reasonable in design, and compact structure has solved current spacing expansion joint of two flanges and has flexible volume undersize, influences the buffering effect, and screw rod and nut produce easily in long-time use simultaneously and become flexible, influence the problem of joint effect, the utility model discloses a simple structural grouping has improved the flexible volume of pipeline, has improved the buffering effect, can also provide the radial power of screw rod simultaneously, prevents that screw rod and screw from droing, improves the joint effect between the pipeline, improves sealing performance then.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a double-flange loose sleeve limit expansion joint, which comprises,

a novel gland loose compensation joint comprises a short pipe and a first flange, wherein the first flange is sleeved on the short pipe, a gland is movably sleeved on the short pipe, and a plurality of parallel long screw rods are inserted in the first flange and the gland;

the improved U-shaped connector is characterized in that a fixing sleeve is arranged on the short pipe, the fixing sleeve is sleeved on the long screw rod, a plurality of first nuts are connected to the long screw rod in a threaded mode, screws are inserted into the side wall, away from the first flange, of one end of the long screw rod in a threaded mode, springs are arranged on the screws, the other ends of the springs penetrate through the second flange and are connected to the U-shaped clamping block, the second flange is fixedly sleeved on the short pipe, and clamping grooves corresponding to the U-shaped clamping block are formed in the second.

Furthermore, the same sealing ring is arranged between the first flange and the gland and between the gland and the short pipe.

Furthermore, a short screw rod is further inserted between the first flange and the gland, and two ends of the short screw rod are in threaded connection with limit nuts.

Furthermore, one end of the spring, which is close to the screw, is connected with a lantern ring, and the lantern ring is movably sleeved on the screw.

Further, the number of the long screws is 4.

Furthermore, the screw is provided with anti-skidding lines.

(III) advantageous effects

The embodiment of the utility model provides a spacing expansion joint of two flange loose sleeves. The method has the following beneficial effects:

1. the connecting effect of the screw rod and the nut is improved, and the screw rod and the nut are prevented from falling off, so that the connecting effect between pipelines is improved, and the sealing performance is improved. One end of the spring is connected to the long screw through the screw, the other end of the spring is connected to the second flange through the U-shaped clamping block, meanwhile, the U-shaped clamping block provides radial force for the long screw through the spring by rotating the U-shaped clamping block, the long screw can be prevented from reversely rotating, and falling off is prevented.

2. The expansion amount can be increased, and the buffering effect is improved. Through set up the spring between long screw and second flange, the spring can improve the flexible volume of nozzle stub, improves buffering effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of the structure a in fig. 1.

In the figure: the device comprises a first flange 1, a sealing ring 2, a gland 3, a short pipe 4, a fixed sleeve 4.1, a long screw 5, a first nut 6, a second flange 7, a screw 8, a spring 9 and a U-shaped clamping block 10.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a double-flange loose tube limit expansion joint comprises,

a novel gland loose compensation joint comprises a short pipe 4 and a first flange 1, wherein the first flange 1 is movably sleeved on the short pipe 4, a gland 3 is movably sleeved on the short pipe 4, a plurality of parallel long screw rods 5 are inserted in the first flange 1 and the gland 3, the same sealing rings 2 are arranged between the first flange 1 and the gland 3 and between the gland 3 and the short pipe 4, the sealing effect can be improved through the sealing rings 2, and meanwhile, a certain expansion amount is achieved;

in this embodiment, as shown in fig. 1 and 2, the short tube 4 is fixedly welded with a fixing sleeve 4.1, the fixing sleeve 4.1 is provided with a plurality of through holes corresponding to the long screw 5, the long screw 5 is connected with a plurality of first nuts 6 in a threaded manner, and the short tube 4 is prevented from falling off by the certain limiting effect of the long screw 5 and the first nuts 6.

In this embodiment, as shown in fig. 1 and 2, a screw 8 is inserted into a thread on a side wall of one end of the long screw 5, which is far away from the first flange 1, a spring 9 is arranged on the screw 8, the other end of the spring 9 passes through the second flange 7 and is connected to the U-shaped fixture block 10, the second flange 7 is fixedly welded on the short pipe 4, a clamping groove corresponding to the U-shaped fixture block 10 is formed in the second flange 7, one end of the spring 9 is connected to the long screw 5 through the screw 8, meanwhile, the other end of the spring 9 is connected to the second flange 7 through the U-shaped fixture block 10, meanwhile, through rotating the U-shaped fixture block 10, the U-shaped fixture block 10 provides a radial force for the long screw 5 through the spring 9, the long screw 5 can be prevented from reversely rotating, the long screw 5 is prevented from falling off.

In this embodiment, as shown in fig. 1, a short screw rod is further inserted between the first flange 1 and the gland 3, and the two ends of the short screw rod are both connected with a limit nut in a threaded manner, so that the connection effect of the first flange 1 and the gland 3 can be improved, and the falling off and the influence on the sealing performance can be prevented.

In this embodiment, the spring 9 is connected with the lantern ring near the one end of screw 8, and the lantern ring activity cup joints on screw 8, can be convenient be in the same place spring 9 and screw 8 are connected to each other.

In this embodiment, the quantity of long screw 5 is 4, through setting up 4 long screw 5, can reach corresponding effect, and quantity is not too much simultaneously, can not influence the installation effectiveness.

In this embodiment, the screw 8 is provided with anti-slip lines, so that the screw 8 can be conveniently rotated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A double-flange loose-sleeve limiting telescopic joint comprises a short pipe and a first flange, wherein the first flange is sleeved on the short pipe, a gland is movably sleeved on the short pipe, and a plurality of parallel long screws are inserted in the first flange and the gland;

the method is characterized in that: the improved U-shaped connector is characterized in that a fixing sleeve is arranged on the short pipe, the fixing sleeve is sleeved on the long screw rod, a plurality of first nuts are connected to the long screw rod in a threaded mode, screws are inserted into the side wall, away from the first flange, of one end of the long screw rod in a threaded mode, springs are arranged on the screws, the other ends of the springs penetrate through the second flange and are connected to the U-shaped clamping block, the second flange is fixedly sleeved on the short pipe, and clamping grooves corresponding to the U-shaped clamping block are formed in the second.

2. The double-flange loose tube spacing expansion joint of claim 1, wherein: and the same sealing ring is arranged between the first flange and the gland and between the gland and the short pipe.

3. The double-flange loose tube spacing expansion joint of claim 1, wherein: still peg graft between first flange and the gland and have a short screw rod, and the equal threaded connection in both ends of short screw rod has stop nut.

4. The double-flange loose tube spacing expansion joint of claim 1, wherein: one end of the spring, which is close to the screw, is connected with a lantern ring, and the lantern ring is movably sleeved on the screw.

5. The double-flange loose tube spacing expansion joint of claim 1, wherein: the number of the long screws is 4.

6. The double-flange loose tube spacing expansion joint of claim 1, wherein: the screw is provided with anti-skid lines.