Pre-buried anti-corrosion threaded flange assembly

Abstract

The utility model relates to the technical field of threaded flanges, in particular to a pre-buried anti-corrosion threaded flange assembly which comprises a pipe body and a threaded flange body, the threaded flange body is installed in the middle of the pipe body, and an anti-corrosion supporting assembly is installed on the outer side of the pipe body. The anti-corrosion supporting assembly comprises a lower protection box, an upper protection box is installed above the lower protection box, installation grooves are formed in the four corner areas of the top of the upper protection box, protection blocks are clamped to the upper surfaces of the installation grooves, and an air bag wrapping mechanism is installed on the inner side of the lower protection box. The air bag wrapping mechanism comprises a first air bag, a first rubber disc is installed on the upper surface of the first air bag, and a first movable groove is formed in the side of the first rubber disc. According to the assembly, the anti-corrosion performance of the threaded flange is remarkably improved, an oil film is formed to isolate oxygen and water, the service life of the threaded flange is effectively prolonged, and the maintenance cost is reduced; and long-term stable operation of the pipeline system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to threaded flange technical field, concretely is a kind of embedded anticorrosive threaded flange assembly. BACKGROUND

[0002] Threaded flange assembly is a kind of mechanical parts for pipe connection, is composed of threaded flange, threaded pipe, sealing washer and fastening bolt etc., threaded flange is as the extremely important component in pipe connection link, shoulders the key mission of connecting pipeline, facilitating installation and disassembly and ensuring the sealing property of pipeline, in part scene, for example, municipal water supply and drainage pipe network laying, industrial factory underground pipeline layout, threaded flange is often embedded below ground surface;

[0003] In municipal and construction field, pipe system often needs to embed threaded flange, however, underground soil environment is complex, contains sharp objects such as gravel, construction residue, these substances can continue to scratch and collide with the outside of threaded flange along with soil settlement and displacement;

[0004] Existing threaded flange mainly relies on surface rust-proof coating to carry out anticorrosion, but in the case of long-term contact with sharp object, coating is vulnerable to damage, once coating falls off, moisture, dissolved oxygen and mineral salt in soil can react with metal, leading to corrosion gradually spreading from damaged place, rust layer thickening, and then substantially reduce the mechanical strength of threaded flange, affect the normal operation of pipe system, therefore, aiming at the above problems, a kind to be embedded anticorrosive threaded flange assembly is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of embedded anticorrosive threaded flange assembly to solve the problem that existing threaded flange relies on surface rust-proof coating to carry out anticorrosion, long-term contact with sharp object is easy to cause coating to fall off, moisture, oxygen and salt in soil cause corrosion to spread and rust layer to thicken, leading to mechanical strength to drop, affect the stable operation of pipe system.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of embedded anticorrosive type threaded flange assembly, including pipe body and threaded flange body, threaded flange body is installed in the middle part of pipe body, anticorrosive support assembly is installed on the outside of pipe body;The anticorrosive support assembly includes lower protective box, upper protective box is installed above the lower protective box, installation slot is set in the four corner regions of the top of upper protective box, the upper surface of installation slot is clamped with protective block, gasbag wrapping mechanism is installed in the inside of lower protective box;The gasbag wrapping mechanism includes first gasbag, first rubber disc is installed on the upper surface of first gasbag, first movable slot is set in the side of first rubber disc, gas pipe is installed on the outside of first gasbag, second gasbag is installed at the top of gas pipe, second rubber disc is fixedly connected on the surface of second gasbag, second movable slot is set in the side of second rubber disc.

[0008] As the further optimization of the utility model, the upper protective box is in the shape of a four-sided pyramid structure, the upper protective box is connected to the top of the lower protective box by means of countersunk head bolts, the number of the countersunk head bolts is four, and each of the four countersunk head bolts corresponds to a corner region of the lower protective box. The top of the protective block is shaped to match the top of the upper protective box, and the protective block is located above the countersunk head bolts.

[0009] As the further optimization of the utility model, the inside of the first rubber disc is in the shape of an arc, and a plurality of first movable slots are set in the side of the first rubber disc. The inside of the second rubber disc is in the shape of an arc.

[0010] As the further optimization of the utility model, the number of the gas pipes is four, and the four gas pipes are equally spaced. The position of the second gasbag corresponds to the position of the gas pipe, and the second gasbag is located in each of the four corner regions of the inside of the lower protective box.

[0011] As the further optimization of the utility model, the first gasbag is located below the threaded flange body, a gas pipe is fixedly connected to one side of the bottom of the first gasbag, the front end of the gas pipe extends to the outside of the lower protective box, and a sealing sleeve is installed at the front end of the gas pipe.

[0012] As the further optimization of the utility model, a sealing member is installed at the top end of the lower protective box, the upper surface of the sealing member is fitted to the lower surface of the upper protective box, and the bottom end of the lower protective box is in the shape of a plane.

[0013] As the further optimization of the utility model, a one-way air release valve is fixedly connected to one side of the top of the lower protective box, and the one-way air release valve is in communication with the inside of the pipe body.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses a corrosion -resistant support subassembly and air bag wrapping mechanism are set up, this component has improved the anticorrosive performance of threaded flange significantly, the corrosion -resistant support subassembly not only utilizes the protection box on four pyramid structure and disperses impact force, still through air bag wrapping mechanism and contacts the site with butter paste smearing, forms oil film and separates oxygen and moisture, effectively prolongs the service life of threaded flange, in addition, the plane structure of lower protection box increases the grounding area, limits the sinking displacement, further strengthens the stability, as a whole, the component structure is ingenious, and the anticorrosive effect is remarkable, has reduced the maintenance cost, has guaranteed the long -term stable operation of pipeline system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is overall structure schematic diagram of the utility model;

[0017] Figure 2 It is overall explosion structure schematic diagram of the utility model;

[0018] Figure 3 It is structure schematic diagram of upper protection box of the utility model;

[0019] Figure 4 It is structure schematic diagram of first air bag of the utility model;

[0020] Figure 5 It is structure schematic diagram of air bag wrapping mechanism of the utility model;

[0021] Figure 6 It is the A of the utility model Figure 5 Structure schematic diagram.

[0022] In the drawing: 1, pipe body;

[0023] 2, threaded flange body;

[0024] 3, corrosion -resistant support subassembly; 31, lower protection box; 32, upper protection box; 33, installation slot; 34, protection block; 35, air bag wrapping mechanism; 36, sealing element;

[0025] 4, countersunk bolt;

[0026] 5, one-way air release valve;

[0027] 351, first air bag; 352, first rubber disc; 353, first movable slot; 354, gas pipe; 355, second air bag; 356, second rubber disc; 357, second movable slot; 358, gas pipe; 359, sealing sleeve. DETAILED DESCRIPTION

[0028] Clearly, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It is to be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0030] Please refer to Figures 1-6 The present application provides a technical scheme:

[0031] The pre-buried anticorrosion type threaded flange assembly comprises a pipe body 1 and a threaded flange body 2, the threaded flange body 2 is installed at the middle part of the pipe body 1, and an anticorrosion support assembly 3 is installed on the outer side of the pipe body 1; the anticorrosion support assembly 3 comprises a lower protection box 31, an upper protection box 32 is installed above the lower protection box 31, a sealing element 36 is installed at the top end of the lower protection box 31, the upper surface of the sealing element 36 is attached to the lower surface of the upper protection box 32, the bottom end of the lower protection box 31 is of a plane structure, installation grooves 33 are formed in the four corner regions of the top of the upper protection box 32, protection blocks 34 are clamped on the upper surfaces of the installation grooves 33, and a gas bag wrapping mechanism 35 is installed on the inner side of the lower protection box 31; the gas bag wrapping mechanism 35 comprises a first gas bag 351, a first rubber disc 352 for storing butter paste is installed on the upper surface of the first gas bag 351, first movable grooves 353 are formed in the side of the first rubber disc 352, the first movable grooves 353 improve the bending deformation capacity of the first rubber disc 352 in the extrusion process, a gas conveying pipe 354 is installed on the outer side of the first gas bag 351, a second gas bag 355 is installed at the top end of the gas conveying pipe 354, a second rubber disc 356 for storing butter paste is fixedly connected to the surface of the second gas bag 355, second movable grooves 357 are formed in the side of the second rubber disc 356, the second movable grooves 357 improve the bending deformation capacity of the second rubber disc 356 in the extrusion process, and the first rubber disc 352 and the second rubber disc 356 are both made of soft rubber material.

[0032] As a further implementation of the scheme, the upper protection box 32 is in the shape of a quadrangular pyramid structure, the upper protection box 32 is connected to the top of the lower protection box 31 through the four flat head bolts 4, the number of the flat head bolts 4 is four, the four flat head bolts 4 correspond to the four corner areas of the lower protection box 31 respectively, the top shape of the protection block 34 is matched with the top shape of the upper protection box 32, and the protection block 34 is located above the flat head bolts 4. This connection mode ensures the firmness of the connection and also ensures the sealing property of the connection, prevents the corrosive substances such as moisture and oxygen from the outside into the inside of the protection box, the protection block 34 is clamped in the installation groove 33 and located above the flat head bolts 4, which not only protects the top end of the flat head bolts 4 from being corroded and damaged, but also does not affect the function of the upper protection box 32 of dispersing impact force by using the inclined surface, and maintains the stability of the overall structure and the protection effect;

[0033] As a further implementation of the scheme, the inner side of the first rubber disc 352 is in an arc structure, a plurality of first movable grooves 353 are arranged on the side of the first rubber disc 352, and the inner side of the second rubber disc 356 is in an arc structure. This shape can store an appropriate amount of butter paste, and the butter paste can be uniformly applied to the outside of the contact part by extrusion, forming a complete and uniform oil film, thereby more effectively isolating oxygen and moisture and improving the corrosion resistance.

[0034] As a further implementation of the scheme, the number of the gas conveying pipes 354 is four, the four gas conveying pipes 354 are arranged at equal intervals, the positions of the second air bags 355 correspond to the positions of the gas conveying pipes 354 up and down, and the second air bags 355 are located at the four corner areas of the inner side of the lower protection box 31. This layout enables the injected gas to be uniformly distributed to each second air bag 355, ensuring that the four second air bags 355 can simultaneously and evenly expand.

[0035] As a further implementation of the scheme, the first air bag 351 is located below the threaded flange body 2, one side of the bottom of the first air bag 351 is fixedly connected with a gas pipe 358, the front end of the gas pipe 358 extends to the outside of the lower protection box 31, a sealing sleeve 359 is installed at the front end of the gas pipe 358, the sealing sleeve 359 plays a sealing role when not inflated, preventing foreign matter from entering the inside of the gas pipe 358, when inflation is needed, the sealing sleeve 359 is removed, and the gas pipe 358 is injected with gas through a gas pump device, the gas flows to the first air bag 351 through the gas pipe 358, and then the expansion of the first air bag 351 and the realization of the subsequent related protection functions are realized.

[0036] As a further implementation of the scheme, the one-way air release valve 5 is fixedly connected to one side of the top of the pipe body 1, the one-way air release valve 5 is in communication with the inner side of the pipe body 1, and the one-way air release valve 5 functions to discharge excess gas when the pressure in the box is higher than a certain value, so as to keep the pressure inside and outside the lower protection box 31 balanced.

[0037] Work flow: Because the shape of the upper protection box 32 is a quadrangular pyramid structure, the top of the upper protection box 32 is designed as a 60°-75° conical angle, and the surface of the upper protection box 32 is sprayed with a ceramic wear-resistant layer. The upper protection box 32 is set to disperse the impact force of sharp objects in soil settlement by using the slope of the top of the upper protection box 32, and guide the gravel to slide away from the flange body. The bottom end of the lower protection box 31 is a flat structure that can increase the grounding area to evenly bear the pressure, while limiting the sinking displacement of the shell. The lower protection box 31 and the upper protection box 32 are connected by a countersunk bolt 4. After installation, the protection block 34 is clamped on the inside of the installation groove 33, and the top end of the countersunk bolt 4 is protected, which ensures the original structure of the upper protection box 32 to disperse the impact of sharp objects in soil settlement. The countersunk bolt 4 ensures the sealing between the lower protection box 31 and the upper protection box 32. Then the staff disassembles the sealing sleeve 359 at the front end of the air pipe 358, and injects an appropriate amount of gas into the air pipe 358 through the air pump device. The gas flows into the inside of the first air bag 351 through the air pipe 358, and flows to the second air bag 355 through the gas conveying pipe 354, so as to realize the rapid expansion of the first rubber disc 352 and the second air bag 355. The expanded first air bag 351 and the four second air bags 355 wrap the contact part of the pipe body 1 and the threaded flange body 2, and squeeze the butter between the first air bag 351 and the second rubber disc 356, so that an oil film is formed on the outside of the contact part of the pipe body 1 and the threaded flange body 2, filling the gap, isolating oxygen and moisture. If necessary, the threaded flange body 2 is installed with butter paste inside the first rubber disc 352 and the second rubber disc 356 for filling suitable butter paste. The first rubber disc 352 and the second rubber disc 356 provide support for the butter paste. The gas squeezed in the inside of the lower protection box 31 is discharged outward through the one-way air valve 5, so that the inside and outside of the lower protection box 31 are balanced in pressure, which can effectively improve the corrosion resistance of the threaded flange assembly.

[0038] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pre-buried anticorrosion type threaded flange assembly comprising a pipe body (1) and a threaded flange body (2), characterized in that: The middle part of the pipe body (1) is provided with a threaded flange body (2), and the outer side of the pipe body (1) is provided with a corrosion-resistant support assembly (3); The corrosion-resistant support assembly (3) comprises a lower protection box (31), and the upper side of the lower protection box (31) is provided with an upper protection box (32); four corners of the top of the upper protection box (32) are provided with mounting grooves (33); the upper surface of the mounting groove (33) is clamped with a protection block (34); and the inner side of the lower protection box (31) is provided with an air bag wrapping mechanism (35). The air bag wrapping mechanism (35) comprises a first air bag (351), and the upper surface of the first air bag (351) is provided with a first rubber disc (352); the side of the first rubber disc (352) is provided with a first movable groove (353); the outer side of the first air bag (351) is provided with a gas conveying pipe (354); the top end of the gas conveying pipe (354) is provided with a second air bag (355); the surface of the second air bag (355) is fixedly connected with a second rubber disc (356); and the side of the second rubber disc (356) is provided with a second movable groove (357).

2. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The shape of the upper protection box (32) is a quadrangular pyramid structure, the upper protection box (32) is connected with the top of the lower protection box (31) through a countersunk bolt (4), the number of the countersunk bolt (4) is four, the four countersunk bolts (4) correspond to the four corner regions of the lower protection box (31) respectively, the top shape of the protection block (34) is matched with the top shape of the upper protection box (32), and the protection block (34) is located above the countersunk bolt (4).

3. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The inner side of the first rubber disc (352) is an arc structure, the number of the first movable grooves (353) provided on the side of the first rubber disc (352) is several, and the inner side of the second rubber disc (356) is an arc structure.

4. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The number of the gas conveying pipes (354) is four, the four gas conveying pipes (354) are arranged at equal intervals, the positions of the second air bags (355) correspond to the positions of the gas conveying pipes (354) up and down, and the second air bags (355) are located in the four corner regions of the inner side of the lower protection box (31) respectively.

5. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The first air bag (351) is located below the threaded flange body (2), one side of the bottom of the first air bag (351) is fixedly connected with an air pipe (358), the front end of the air pipe (358) extends to the outer side of the lower protection box (31), and the front end of the air pipe (358) is provided with a sealing sleeve (359).

6. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The top end of the lower protection box (31) is provided with a sealing element (36), the upper surface of the sealing element (36) is matched with the lower surface of the upper protection box (32), and the bottom end of the lower protection box (31) is a plane structure.

7. A pre-buried corrosion-proof threaded flange assembly according to claim 1, characterized in that: The top of the lower protection box (31) is fixedly connected with a one-way air release valve (5) on one side of the pipe body (1), and the one-way air release valve (5) is in communication with the inner side of the pipe body (1).

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