Corrosion-resistant metal expansion joint

Abstract

The utility model discloses a corrosion-resistant metal expansion joint, which comprises a main body unit, the main body unit comprises a corrugated sleeve, and the upper end and the lower end of the corrugated sleeve are fixedly connected with flanges. The push plate is pushed to slide in the sliding groove, so that the push plate makes contact with the clamping plate and moves to the lower side surface of the clamping plate, then the clamping plate is pushed by the push plate to slide out of the clamping groove, then the inner pipe is pulled to be pulled out of the corrugated sleeve for replacement, then the bolt in threaded connection with the locking plate is twisted and rotated, and the inner pipe is pulled out of the corrugated sleeve for replacement. And the bolts and the corrugated sleeves are separated from threaded connection, then the fixing plates can be detached from the interiors of the corrugated sleeves, replacement and detachment are facilitated, the maintenance and replacement cost is reduced, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a corrosion-resistant metal expansion joint. Background Art

[0002] An expansion joint is a device used to compensate for the telescopic deformation of pipelines, containers or equipment caused by factors such as temperature changes, vibrations or mechanical displacements. It usually consists of a flexible core element and two end connectors, which can effectively reduce the stress and damage caused by thermal expansion or contraction. In order to resist chemical corrosion and electrochemical corrosion and be applicable to environments where the medium is corrosive, anti-corrosion materials need to be used inside the expansion joint.

[0003] During long-term use, the anti-corrosion material is prone to failure, which affects the anti-corrosion function of the expansion joint. Therefore, the entire expansion joint needs to be disassembled and replaced. However, most of the existing expansion joints are processed by integral welding, which is not convenient for disassembly and replacement. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract and the title. Such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing corrosion-resistant metal expansion joint, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a corrosion-resistant metal expansion joint, which solves the problem of "during long-term use, the anti-corrosion material is prone to failure, which affects the anti-corrosion function of the expansion joint. Therefore, the entire expansion joint needs to be disassembled and replaced. However, most of the existing expansion joints are processed by integral welding, which is not convenient for disassembly and replacement".

[0007] To solve the above technical problems, the present utility model provides the following technical solutions:

[0008] A corrosion-resistant metal expansion joint, comprising:

[0009] A main body unit, including a corrugated sleeve, and flanges are fixedly connected to both the upper end and the lower end of the corrugated sleeve;

[0010] The connecting unit comprises an inner tube movably connected to the inner wall surface of the corrugated sleeve, four groups of fixing plates are arranged on the upper end of the inner tube, and the fixing plates are all detachably connected to the corrugated sleeve, the four groups of fixing plates are movably connected to the side away from the corrugated sleeve with a connecting strip, one side of the connecting strip is fixedly connected with a clamping plate, the inner wall surface of the inner tube is provided with four groups of card slots matching with the clamping plates, and the inner wall surfaces of the card slots are provided with sliding grooves, the interiors of the four groups of sliding grooves are provided with pushing components, one side of the four groups of fixing plates is provided with multiple groups of telescopic slots, and the inner wall surfaces of the telescopic slots are fixedly connected with springs, and the other ends of the springs are fixedly connected with sliding rods, and the other ends of the multiple groups of sliding rods are fixedly connected to the connecting strip.

[0011] As a preferred solution of the corrosion-resistant metal expansion joint described in the utility model, the four groups of fixed plates are fixedly connected to the side of the inner tube with two groups of locking plates, and the inside of the locking plates are threadedly connected with bolts, each group of bolts is connected to the corrugated sleeve through threads, and the inner tube is provided with multiple groups of storage grooves matching the locking plates on the side of the corrugated sleeve.

[0012] As a preferred solution of the corrosion-resistant metal expansion joint described in the utility model, the four groups of pushing components include a push plate slidably connected to the inner wall surface of the slide groove, and one end of the push plate is tightly fitted with one side surface of the clamping plate.

[0013] As a preferred solution of the corrosion-resistant metal expansion joint described in the utility model, one side of the four groups of clamping plates close to the push plates are all designed with an inclined surface, and one side of the four groups of push plates close to the clamping plates are all designed with an arc shape.

[0014] As a preferred solution of the corrosion-resistant metal expansion joint described in the utility model, the inner wall surfaces of the four groups of slide grooves are all provided with limiting grooves, and the limiting grooves are all slidably connected with limiting plates, and each group of limiting plates is fixedly connected to the push plate.

[0015] As a preferred solution of the corrosion-resistant metal expansion joint described in the utility model, the inner wall surface of the receiving groove is provided with an anti-corrosion layer, and the anti-corrosion layer is a zinc oxide nanoparticle coating.

[0016] Beneficial effects of the utility model:

[0017] The push plate is pushed to slide inside the slide groove, so that the push plate contacts the card plate and moves to the lower surface of the card plate, and then the card plate is pushed by the push plate to slide out from the inside of the card groove, and then the inner tube is pulled to pull the inner tube out from the inside of the corrugated sleeve and replace it, and then the bolt threadedly connected to the locking plate is twisted and rotated to disengage the bolt from the corrugated sleeve, and then the fixing plate can be removed from the inside of the corrugated sleeve, which is convenient for replacement and disassembly, reduces maintenance and replacement costs, and improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0019] Figure 1 is a three-dimensional structural schematic diagram of a corrosion-resistant metal expansion joint proposed by the present invention;

[0020] Figure 2 is Figure 1 a three-dimensional structural sectional schematic diagram;

[0021] Figure 3 is an exploded three-dimensional structural diagram of the inner pipe and the fixing plate;

[0022] Figure 4 is Figure 2 an enlarged structural schematic diagram of part A in

[0023] In the figure: 100, main body unit; 101, corrugated sleeve; 102, flange; 200, connecting unit; 201, inner pipe; 202, fixing plate; 203, connecting bar; 204, clamping plate; 205, card slot; 206, sliding rod; 207, spring; 208, sliding groove; 209, pushing component; 209a, push plate; 209b, limiting plate; 210, receiving groove; 211, locking plate; 212, bolt; 213, anti-corrosion layer. Detailed implementation manners

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention in conjunction with the drawings in the specification.

[0025] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0026] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Reference Figures 1-4 The utility model provides a corrosion-resistant metal expansion joint, comprising:

[0029] The main unit 100 includes a bellows sleeve 101, and the upper and lower ends of the bellows sleeve 101 are fixedly connected with flanges 102;

[0030] The connecting unit 200 includes an inner tube 201 movably connected to the inner wall surface of the corrugated sleeve 101, and four sets of fixing plates 202 are arranged on the upper end of the inner tube 201, and the fixing plates 202 are all detachably connected to the corrugated sleeve 101, and the four sets of fixing plates 202 are all inclined to facilitate the passage of fluid, and the four sets of fixing plates 202 are movably connected to the side of the corrugated sleeve 101, and the side of the connecting strip 203 is fixedly connected to the clamping plate 204, and the inner wall surface of the inner tube 201 is provided with four sets of fixing plates 202. 04, and the inner wall surface of the card slot 205 is provided with a slide groove 208, and the interior of the four sets of slide grooves 208 is provided with a pushing assembly 209, one side of the four sets of fixed plates 202 is provided with multiple sets of telescopic slots, and the inner wall surface of the telescopic slot is fixedly connected with a spring 207, and the other end of the spring 207 is fixedly connected with a slide rod 206, and the other ends of the multiple slide rods 206 are fixedly connected with the connecting strip 203, and the card plate 204 is pulled by the spring 207 to engage with the card slot 205.

[0031] Among them, the four groups of fixing plates 202 are fixedly connected to one side of the inner tube 201 with two groups of locking plates 211, and the inside of the locking plates 211 are threadedly connected with bolts 212, and each group of bolts 212 is connected to the corrugated sleeve 101 through threads. The inner tube 201 is provided with multiple groups of storage grooves 210 matching with the locking plates 211 on one side of the corrugated sleeve 101. The threaded rotating bolts 212 can control the fixation of the locking plates 211 and the corrugated sleeve 101, so that the fixing plates 202 and the corrugated sleeve 101 can be flexibly disassembled.

[0032] Furthermore, the four groups of pushing components 209 include a push plate 209a that is slidably connected to the inner wall surface of the slide groove 208, and one end of the push plate 209a is tightly fitted with one side surface of the clamping plate 204, pushing the push plate 209a to slide inside the slide groove 208, so that the push plate 209a can push the clamping plate 204 out of the clamping groove 205, so that the inner tube 201 can be disassembled.

[0033] Furthermore, one side of the four sets of pallet boards 204 close to the push board 209a is designed with an inclined surface, and one side of the four sets of push boards 209a close to the pallet boards 204 is designed with an arc, so that there will be no jamming when the push board 209a contacts the pallet board 204, which is convenient for the push board 209a to push out the pallet board 204.

[0034] Furthermore, limiting grooves are provided on the inner wall surfaces of the four sets of sliding grooves 208, and limiting plates 209b are slidably connected in the limiting grooves. Each set of limiting plates 209b is fixedly connected to the push board 209a, which has a limiting effect on the push board 209a, so that the push board 209a will not be disconnected from the inner tube 201.

[0035] Furthermore, an anti-corrosion layer 213 is provided on the inner wall surface of the storage groove 210, and the anti-corrosion layer 213 is a zinc oxide nanoparticle coating, which has an anti-corrosion effect.

[0036] During use, push the push board 209a to slide inside the sliding groove 208, so that the push board 209a contacts the pallet board 204 and moves to the lower surface of the pallet board 204. Then, the pallet board 204 is pushed by the push board 209a and slides out from the inside of the card slot 205. Then, pull the inner tube 201 to extract the inner tube 201 from the inside of the corrugated sleeve 101 for replacement. Then, twist and rotate the bolt 212 threadedly connected to the locking plate 211 to disconnect the bolt 212 from the threaded connection with the corrugated sleeve 101, and then the fixing plate 202 can be disassembled from the inside of the corrugated sleeve 101, which is convenient for the replacement and disassembly of the inner tube 201 and the fixing plate 202.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A corrosion-resistant metal expansion joint, characterized in that: include: The main body unit (100) comprises a bellows sleeve (101), wherein the upper end and the lower end of the bellows sleeve (101) are both fixedly connected to flanges (102); The connecting unit (200) comprises an inner tube (201) movably connected to the inner wall surface of the corrugated sleeve (101), the upper end of the inner tube (201) is provided with four groups of fixing plates (202), and the fixing plates (202) are all detachably connected to the corrugated sleeve (101), the sides of the four groups of fixing plates (202) facing away from the corrugated sleeve (101) are all movably connected to connecting strips (203), and the sides of the connecting strips (203) are all fixedly connected to a clamping plate (204), and the inner wall surface of the inner tube (201) is provided with four groups of fixing plates (202) movably connected to the inner wall surface of the inner tube (201). The card plate (204) is matched with a card slot (205), and the inner wall surface of the card slot (205) is provided with a slide groove (208), and the inside of the four groups of the slide grooves (208) is provided with a pushing component (209), and one side of the four groups of fixed plates (202) is provided with multiple groups of telescopic grooves, and the inner wall surface of the telescopic groove is fixedly connected with a spring (207), and the other end of the spring (207) is fixedly connected with a slide rod (206), and the other end of the multiple groups of slide rods (206) is fixedly connected to the connecting bar (203).

2. A corrosion-resistant metal expansion joint according to claim 1, characterized in that: The four groups of fixing plates (202) are all fixedly connected to two groups of locking plates (211) on one side close to the inner tube (201), and the insides of the locking plates (211) are all threadedly connected to bolts (212), and each group of bolts (212) is connected to the corrugated sleeve (101) through threads. The inner tube (201) is provided with a plurality of groups of receiving grooves (210) matched with the locking plates (211) on one side close to the corrugated sleeve (101).

3. A corrosion-resistant metal expansion joint according to claim 2, characterized in that: The four groups of pushing components (209) include a push plate (209a) slidably connected to the inner wall surface of the slide groove (208), and one end of the push plate (209a) is tightly fitted to a side surface of the clamping plate (204).

4. A corrosion-resistant metal expansion joint according to claim 3, characterized in that: The sides of the four groups of clamping plates (204) close to the push plates (209a) are all designed with an inclined surface, and the sides of the four groups of push plates (209a) close to the clamping plates (204) are all designed with an arc shape.

5. A corrosion-resistant metal expansion joint according to claim 4, characterized in that: The inner wall surfaces of the four groups of slide grooves (208) are all provided with limiting grooves, and the limiting grooves are all slidably connected with limiting plates (209b), and each group of limiting plates (209b) is fixedly connected to the push plate (209a).

6. A corrosion-resistant metal expansion joint according to claim 5, characterized in that: An anti-corrosion layer (213) is provided on the inner wall surface of the storage tank (210), and the anti-corrosion layer (213) is a zinc oxide nanoparticle coating.

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