CN214368513U

CN214368513U - Anticorrosive expansion joint

Info

Publication number: CN214368513U
Application number: CN202120135596.1U
Authority: CN
Inventors: 黄永和
Original assignee: Wuhan Yongtai Bellows Co ltd
Current assignee: Wuhan Yongtai Bellows Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-10-08
Anticipated expiration: 2031-01-19

Abstract

The utility model relates to an expansion joint technical field, concretely relates to anticorrosive expansion joint, include first flange and the bellows that is located first flange one side. The utility model overcomes prior art's is not enough, through being provided with constriction device, set up the mounting groove in constriction device's the inside second flange, ring gear in the mounting groove internal rotation is connected, ring gear one end fixed connection change ring including, two gears are connected in the inboard meshing of ring gear, two gears and coupling mechanism fixed connection, set up the sawtooth in the ring gear outside including, rotate the dog of connecting with the sawtooth correspondence through torque spring in the opening in the second flange outside, can rotate two threaded rods simultaneously, prevent that the expansion joint from appearing the error when length adjustment, through being provided with the mounting groove, the first stopper that corresponds with the dog at mounting groove upper wall fixed connection, prevent that the ring gear from revolving automatically, be located the one end fixedly connected with second stopper of first flange at the threaded rod, prevent the regulation length in-process, first flange breaks away from the threaded rod.

Description

Anticorrosive expansion joint

Technical Field

The utility model relates to an expansion joint technical field, concretely relates to anticorrosive expansion joint.

Background

An expansion joint refers to a flexible element that effectively functions to compensate for axial deformation. For example, the expansion joint welded on the shell of the fixed tube-plate heat exchanger has large axial flexibility and easy deformation, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell and avoiding causing strength damage, instability damage and tube pull-out damage. The expansion joint has many kinds, and the common structures include wave, ring plate welding, clamping shell type and the like, wherein the wave expansion joint is most widely applied, and the ring plate welding expansion joint is only suitable for normal pressure or low pressure occasions.

The cooperation that current expansion joint used screw rod and nut more uses two fixed flanges, install the bellows between two flanges, the distance between two flanges can be adjusted in the cooperation that uses screw rod and nut simultaneously, current expansion joint generally uses two screw rods and nut cooperation, in order to adjust the length of expansion joint, need rotate the nut, two nuts are not convenient for rotate simultaneously, lead to the distance inconsistent that both sides were adjusted, also can there be the error if rotate simultaneously, staff's operation not convenient for.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the deficiency of the prior art, the utility model provides an anticorrosive expansion joint has overcome the not enough of prior art.

(II) technical scheme

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

an anticorrosion expansion joint comprises a first flange and a corrugated pipe positioned on one side of the first flange, wherein the other end of the corrugated pipe is fixedly connected with a contraction device, and a connecting mechanism is arranged between the contraction device and the first flange;

the retractor comprises a second flange, a mounting groove is formed in the second flange, an inner gear ring is connected to the inner portion of the mounting groove in a rotating mode, one end of the inner gear ring is fixedly connected with a rotating ring, two gears are meshed with the inner side of the inner gear ring and fixedly connected with a connecting mechanism, sawteeth are arranged on the outer side of the inner gear ring, an opening communicated with the mounting groove is formed in the outer side of the second flange, and a stop block corresponding to the sawteeth is connected to the opening in a rotating mode through a torsion spring.

As a preferred technical scheme of the utility model, coupling mechanism includes the threaded rod, threaded rod one end run through first flange and with first flange threaded connection, the threaded rod other end and gear fixed connection.

As a preferred technical scheme of the utility model, mounting groove upper wall fixedly connected with and the first stopper that the dog corresponds.

As an optimized technical scheme of the utility model, swivel outside fixedly connected with ejector pad.

As a preferred technical scheme of the utility model, the threaded rod is located the one end fixedly connected with second stopper of first flange.

As an optimized technical scheme of the utility model, all scribble anticorrosive material in first flange, bellows and the second flange outside.

(III) advantageous effects

The embodiment of the utility model provides an anticorrosive expansion joint possesses following beneficial effect:

1. through being provided with constriction device, set up the mounting groove in constriction device's second flange is inside, ring gear in the mounting groove internal rotation is connected, ring gear one end fixed connection change ring including, at two gears of ring gear inboard meshing connection, two gears and coupling mechanism fixed connection set up the sawtooth in the ring gear outside, rotate the dog of connecting with the sawtooth correspondence through torque spring in the opening in the second flange outside, can rotate two threaded rods simultaneously, prevent that the expansion joint from appearing the error when length adjustment.

2. Through being provided with the mounting groove, at the first stopper that mounting groove upper wall fixed connection and dog correspond, prevent that the interior ring gear from revolving automatically, lie in the one end fixedly connected with second stopper of first flange at the threaded rod, prevent to adjust the length in-process, first flange breaks away from the threaded rod.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 3 is a schematic side view of the contraction device of the present invention;

FIG. 4 is a schematic diagram of B in FIG. 3;

FIG. 5 is a schematic view of the structure A in FIG. 2;

fig. 6 is a schematic view of the front view structure of the connection mechanism of the present invention.

In the figure: 1. a first flange; 2. a retractor; 3. a bellows; 4. a connecting mechanism; 201. a second flange; 202. an inner gear ring; 203. rotating the ring; 204. saw teeth; 205. a stopper; 206. a first stopper; 207. an opening; 208. a gear; 209. a push block; 210. mounting grooves; 401. a threaded rod; 402. and a second limiting block.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention:

as shown in fig. 1-6: an anticorrosion expansion joint comprises a first flange 1 and a corrugated pipe 3 positioned on one side of the first flange 1, wherein the other end of the corrugated pipe 3 is fixedly connected with a contraction device 2, and a connecting mechanism 4 is arranged between the contraction device 2 and the first flange 1;

constriction device 2 includes second flange 201, second flange 201 is inside to have seted up mounting groove 210, the mounting groove 210 internal rotation is connected with interior ring gear 202, interior ring gear 202 one end fixedly connected with change 203, the inboard meshing of interior ring gear 202 is connected with two gears 208, two gears 208 and 4 fixed connection of coupling mechanism, the interior ring gear 202 outside is provided with sawtooth 204, the opening 207 of intercommunication mounting groove 210 is seted up in the second flange 201 outside, it is connected with the dog 205 that corresponds with sawtooth 204 to rotate through torsion spring in the opening 207.

Wherein, coupling mechanism 4 includes threaded rod 401, threaded rod 401 one end run through first flange 1 and with first flange 1 threaded connection, the threaded rod 401 other end and gear 208 fixed connection, are convenient for adjust the length of bellows 3.

The upper wall of the mounting groove 210 is fixedly connected with a first limiting block 206 corresponding to the stop block 205, so as to limit the stop block 205 and prevent the inner gear ring 202 from automatically rotating.

Wherein, the outside of the swivel 203 is fixedly connected with a push block 209, which is convenient for the operation of the staff.

Wherein, threaded rod 401 is located the one end fixedly connected with second stopper 402 of first flange 1, and is spacing to first flange 1, prevents to adjust the length in-process, and first flange 1 breaks away from threaded rod 401.

Wherein, first flange 1, bellows 3 and second flange 201 outside all scribble anticorrosive material for the expansion joint is anticorrosive effectual, long service life.

The utility model discloses a theory of operation: during operation, through being provided with constriction device 2, when needing to adjust the length of expansion joint, through rotating ejector pad 209, drive swivel 203 and rotate, swivel 203 drives interior ring gear 202 and rotates, interior ring gear 202 drives threaded rod 401 and rotates, threaded rod 401 drives first flange 1 and moves, after adjusting, because dog 205 and first stopper 206, prevent interior ring gear 202 reversal, when recovering, rotate dog 205 earlier, dog 205 separates with sawtooth 204, reversal ejector pad 209, it rotates to drive swivel 203, swivel 203 drives interior ring gear 202 and rotates, interior ring gear 202 drives threaded rod 401 and rotates, threaded rod 401 drives first flange 1 and moves can.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anticorrosion expansion joint comprises a first flange (1) and a corrugated pipe (3) positioned on one side of the first flange (1), and is characterized in that the other end of the corrugated pipe (3) is fixedly connected with a contraction device (2), and a connecting mechanism (4) is arranged between the contraction device (2) and the first flange (1);

constriction device (2) includes second flange (201), mounting groove (210) have been seted up to second flange (201) inside, mounting groove (210) internal rotation is connected with interior ring gear (202), interior ring gear (202) one end fixedly connected with change (203), the inboard meshing of interior ring gear (202) is connected with two gears (208), two gear (208) and coupling mechanism (4) fixed connection, interior ring gear (202) outside is provided with sawtooth (204), opening (207) of intercommunication mounting groove (210) are seted up in second flange (201) outside, be connected with dog (205) that correspond with sawtooth (204) through torsion spring rotation in opening (207).

2. An anticorrosion expansion joint according to claim 1, characterized in that the connection mechanism (4) comprises a threaded rod (401), one end of the threaded rod (401) penetrates through the first flange (1) and is in threaded connection with the first flange (1), and the other end of the threaded rod (401) is fixedly connected with the gear (208).

3. The anticorrosion expansion joint according to claim 1, wherein a first stop block (206) corresponding to the stop block (205) is fixedly connected to the upper wall of the mounting groove (210).

4. An anticorrosion expansion joint according to claim 1, wherein a push block (209) is fixedly connected to the outside of the swivel (203).

5. An anticorrosion expansion joint according to claim 2, characterized in that a second stop block (402) is fixedly connected to the threaded rod (401) at one end of the first flange (1).

6. An anticorrosion expansion joint according to claim 1, characterized in that the outside of the first flange (1), the corrugated pipe (3) and the second flange (201) are coated with an anticorrosion material.