A device for pipe reducing

Abstract

The utility model discloses a device for pipeline reducing, and the reducing pipe end is provided with a connecting and sealing assembly, the other end of the reducing pipe is welded with a reducing small pipe, the outer side of the reducing big pipe and the reducing small pipe end is provided with an inclined groove, the one end of the inclined groove is fixedly sleeved with an extruding ring, the one side of the extruding ring is fixedly connected with an internal thread pipe, the inside of the sealing groove is inlaid with a sealing rubber ring, the inside of the reducing pipe is provided with a buffer assembly, the utility model sets up the reducing big pipe and the reducing small pipe in the corresponding pipeline end position respectively, rotates the internal thread pipe of the outer side of the reducing big pipe and the reducing small pipe in turn, in the rotating process, the internal thread pipe pushes the extruding ring and approaches the one end of the inclined groove with the diameter being smaller to the one end with the diameter being larger, the extruding ring will extrude the reducing big pipe and the reducing small pipe, makes its deformation, and pushes the sealing rubber ring and extrudes the pipeline of contact connection, eliminates the gap of the connecting place, improves the compactness of connection, and the pipeline of connection can be disassembled by reversing the internal thread pipe, and the operation is quick and convenient.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, specifically to a device for pipe diameter reduction. Background Technology

[0002] During pipe installation, such as HVAC and water supply and drainage pipes, it is often necessary to connect two pipes with different diameters. However, due to the different diameters, they cannot be directly connected. In this case, a reducer is needed to solve the problem of connecting different diameter pipes directly.

[0003] However, when connecting reducers on the market, the connection often becomes loose, leading to leaks. It is often necessary to apply adhesive to seal the gaps at the connection, but applying adhesive evenly takes a long time and is not conducive to subsequent maintenance operations. Utility Model Content

[0004] This utility model provides a device for pipe diameter reduction, which can effectively solve the problem mentioned in the background art of loose connection leading to leakage. It is often necessary to apply adhesive to seal the gap at the connection, but applying adhesive evenly takes a long time and is not conducive to subsequent maintenance operations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for pipe diameter change, comprising a reducing pipe, wherein a connecting sealing assembly is installed at the end of the reducing pipe, the connecting sealing assembly comprising a large reducing pipe, a small reducing pipe, a slanted groove, a compression ring, an internally threaded pipe, a sealing groove, a sealing rubber ring, an inner sealing groove, and an expansion rubber ring;

[0006] One end of the reducing pipe is welded with a large reducing pipe, and the other end of the reducing pipe is welded with a small reducing pipe. Inclined grooves are opened on the outer side of both the large and small reducing pipe ends. A compression ring is fixedly sleeved on one end of the inclined groove, and an internally threaded pipe is fixedly connected to one side of the compression ring.

[0007] A sealing groove is provided on the inner side of the reducing large pipe and the reducing small pipe near the inclined groove, and a sealing rubber ring is embedded inside the sealing groove.

[0008] According to the above technical solution, the inner side of the extrusion ring is a smooth curved surface, and the longitudinal section of the inclined groove is a right trapezoid.

[0009] According to the above technical solution, an inner sealing groove is provided on the inner side of the sealing ring, and an expansion ring is embedded in the inner sealing groove.

[0010] According to the above technical solution, both the large-diameter pipe and the small-diameter pipe are threaded on their outer sides, and the two internally threaded pipes are respectively connected to the large-diameter pipe and the small-diameter pipe by threads.

[0011] According to the above technical solution, a buffer assembly is installed inside the reducing pipe. The buffer assembly includes an inner support cup, a snap-fit ​​groove, a buffer air cushion, a buffer ring, and a snap-fit ​​ring.

[0012] An inner support cup is fixedly snapped into the inside of the reducing pipe. Both ends of the inner support cup are provided with snap-fit ​​grooves. A buffer air cushion is adhered to the inner side of the inner support cup. A buffer ring is snapped into the inner side of the buffer air cushion. A snap-fit ​​ring is welded to the end of the buffer ring at the snap-fit ​​groove.

[0013] According to the above technical solution, the snap ring is snapped into the snap groove, and the inner side of the buffer ring is a raised curved surface.

[0014] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use;

[0015] 1. Equipped with a connecting sealing assembly, the large and small diameter reducing pipes are respectively fitted onto the corresponding pipe ends. By rotating the internally threaded pipes on the outside of the large and small diameter reducing pipes in sequence, the internally threaded pipes push the extrusion ring along the inclined groove from the smaller diameter end to the larger diameter end. The reducing pipes, large and small diameter reducing pipes are all made of cross-linked polyethylene, while the extrusion ring is made of stainless steel. The extrusion ring will squeeze the large and small diameter reducing pipes, causing them to deform and pushing the sealing ring to squeeze the pipes in contact, eliminating gaps at the connection and improving the tightness of the connection. The connected pipes can be disassembled by rotating the internally threaded pipe in the opposite direction, making the operation quick and convenient.

[0016] During use, if the sealing ring ages and cracks, the expansion ring will be exposed, absorbing moisture and impacting the connection to maintain its sealing effect and improve leak prevention.

[0017] 2. Equipped with a buffer component, during use, if it is a water supply or drainage pipe, the water pressure will change as the water flows through the reducer. When the water flows from the large diameter pipe to the small diameter pipe, the water pressure increases, and the water flow will squeeze the buffer ring. The buffer ring is made of stainless steel spring steel, which, together with the buffer air cushion, deforms and buffers the impact force before transmitting it to the inner support cup and reduce the damage to the reducer, preventing it from breaking due to excessive water pressure. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the connecting sealing assembly of this utility model;

[0022] Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of region A;

[0023] Figure 4 This is a schematic diagram of the structure of the buffer assembly of this utility model;

[0024] Labels in the diagram: 1. Reducer;

[0025] 2. Connecting sealing components; 201. Larger reducing pipe; 202. Smaller reducing pipe; 203. Inclined groove; 204. Extrusion ring; 205. Internally threaded pipe; 206. Sealing groove; 207. Sealing ring; 208. Inner sealing groove; 209. Expansion ring;

[0026] 3. Buffer assembly; 301. Inner support cup; 302. Snap-fit ​​groove; 303. Buffer air cushion; 304. Buffer ring; 305. Snap-fit ​​ring. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Example: Figure 1-4 As shown, this utility model provides a technical solution for a device for pipe diameter reduction, including a reducing pipe 1, and a connecting sealing assembly 2 installed at the end of the reducing pipe 1. The connecting sealing assembly 2 includes a large reducing pipe 201, a small reducing pipe 202, a slanted groove 203, a compression ring 204, an internally threaded pipe 205, a sealing groove 206, a sealing rubber ring 207, an inner sealing groove 208, and an expansion rubber ring 209.

[0029] One end of the reducing pipe 1 is welded with a large reducing pipe 201, and the other end of the reducing pipe 1 is welded with a small reducing pipe 202. Both the large reducing pipe 201 and the small reducing pipe 202 have inclined grooves 203 on their outer sides. One end of the inclined groove 203 is fixedly sleeved with a compression ring 204. The inner side of the compression ring 204 is a smooth curved surface, and the longitudinal section of the inclined groove 203 is a right trapezoid, which facilitates the compression ring 204 to compress the inclined groove 203 and deform it. One side of the compression ring 204 is fixedly connected with an internally threaded pipe 205. Both the large reducing pipe 201 and the small reducing pipe 202 have threads on their outer sides. The two internally threaded pipes 205 are respectively connected to the large reducing pipe 201 and the small reducing pipe 202 by threads, which facilitates the installation of the internally threaded pipes 205.

[0030] A sealing groove 206 is provided on the inner side of the reducing large pipe 201 and the reducing small pipe 202 near the inclined groove 203. A sealing ring 207 is embedded inside the sealing groove 206. An inner sealing groove 208 is provided inside the sealing ring 207. An expansion ring 209 is embedded inside the inner sealing groove 208 to further improve the sealing performance of the connection.

[0031] The reducer 1 is equipped with a buffer assembly 3, which includes an inner support cup 301, a snap-fit ​​groove 302, a buffer air cushion 303, a buffer ring 304, and a snap-fit ​​ring 305.

[0032] An inner support cup 301 is fixedly snapped into the inside of the reducing pipe 1. Both ends of the inner support cup 301 are provided with snap-fit ​​grooves 302. A buffer air cushion 303 is bonded to the inside of the inner support cup 301. A buffer ring 304 is snapped into the inside of the buffer air cushion 303. A snap-fit ​​ring 305 is welded to the end of the buffer ring 304 at the snap-fit ​​groove 302. The snap-fit ​​ring 305 is snapped into the inside of the snap-fit ​​groove 302. The inner side of the buffer ring 304 is a raised curved surface, which is convenient for buffering increased water pressure.

[0033] The working principle and usage process of this utility model: When it is necessary to use a reducing joint to connect the pipe, the expansion rubber ring 209 is embedded into the inner sealing groove 208 of the sealing rubber ring 207, and then the sealing rubber ring 207 is embedded into the sealing groove 206. At this time, the extrusion ring 204 is at the end of the inclined groove 203 with a smaller diameter.

[0034] Then, the large-diameter reducing pipe 201 and the small-diameter reducing pipe 202 are respectively fitted onto the corresponding pipe ends. During the fitting process, it should be ensured that the pipe ends squeeze the end of the large-diameter reducing pipe 201 and the small-diameter reducing pipe 202 close to the end of the reducing pipe 1. Next, rotate the internal threaded pipe 205 on the outside of the large-diameter reducing pipe 201 and the small-diameter reducing pipe 202 in sequence. During the rotation, the internal threaded pipe 205 pushes the compression ring 204 along the inclined groove 203 from the smaller diameter end to the larger diameter end. The reducing pipe 1, the large-diameter reducing pipe 201, and the small-diameter reducing pipe 202 are all cross-linked polyethylene pipes, while the compression ring 204 is made of stainless steel. The compression ring 204 will squeeze the large-diameter reducing pipe 201 and the small-diameter reducing pipe 202, causing them to deform and push the sealing ring 207 to squeeze the pipes in contact, eliminating gaps at the connection and improving the tightness of the connection. The connected pipes can be disassembled by rotating the internal threaded pipe 205 in the opposite direction. The operation is quick and convenient.

[0035] During use, if the sealing ring 207 ages and cracks, the expansion ring 209 will be exposed, absorbing moisture and impact, thus maintaining the sealing effect at the connection and providing better leak prevention. Furthermore, during use, if it is a water supply and drainage pipe, the water pressure will change as the water flows through the reducer 1 due to the change in diameter. When the water flows from the large-diameter pipe to the small-diameter pipe, the water pressure increases, which will squeeze the buffer ring 304. The buffer ring 304 is made of stainless steel spring steel, which, together with the buffer air cushion 303, deforms and buffers the impact force before transmitting it to the inner support cup 301 and the reducer 1, reducing damage to the reducer 1 and preventing it from rupturing due to excessive water pressure.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for pipe diameter reduction, comprising a reducing pipe (1), characterized in that: The reducing pipe (1) is equipped with a connecting sealing assembly (2) at its end. The connecting sealing assembly (2) includes a reducing large pipe (201), a reducing small pipe (202), a slanted groove (203), a compression ring (204), an internally threaded pipe (205), a sealing groove (206), a sealing rubber ring (207), an inner sealing groove (208), and an expansion rubber ring (209). One end of the reducing pipe (1) is welded with a large reducing pipe (201), and the other end of the reducing pipe (1) is welded with a small reducing pipe (202). The outer sides of the ends of the large reducing pipe (201) and the small reducing pipe (202) are provided with inclined grooves (203). One end of the inclined groove (203) is fixedly sleeved with a compression ring (204), and one side of the compression ring (204) is fixedly connected with an internally threaded pipe (205). A sealing groove (206) is provided on the inner side of the reducing large pipe (201) and reducing small pipe (202) near the inclined groove (203), and a sealing rubber ring (207) is embedded inside the sealing groove (206).

2. The device for pipe diameter reduction according to claim 1, characterized in that, The inner side of the extrusion ring (204) is a smooth curved surface, and the longitudinal section of the inclined groove (203) is a right trapezoid.

3. The device for pipe diameter reduction according to claim 1, characterized in that, An inner sealing groove (208) is provided on the inner side of the sealing ring (207), and an expansion ring (209) is embedded in the inner sealing groove (208).

4. The device for pipe diameter reduction according to claim 1, characterized in that, Both the large-diameter pipe (201) and the small-diameter pipe (202) are threaded on the outside, and the two internally threaded pipes (205) are respectively connected to the large-diameter pipe (201) and the small-diameter pipe (202) by threads.

5. The device for pipe diameter reduction according to claim 1, characterized in that, The reducing pipe (1) is equipped with a buffer assembly (3), which includes an inner support cup (301), a snap-fit ​​groove (302), a buffer air cushion (303), a buffer ring (304), and a snap-fit ​​ring (305). The reducing pipe (1) is fixedly connected to an inner support cup (301). Both ends of the inner support cup (301) are provided with snap-fit ​​grooves (302). A buffer air cushion (303) is bonded to the inner side of the inner support cup (301). A buffer ring (304) is snap-fitted to the inner side of the buffer air cushion (303). A snap-fit ​​ring (305) is welded to the end of the buffer ring (304) at the snap-fit ​​groove (302).

6. The device for pipe diameter reduction according to claim 5, characterized in that, The snap ring (305) is snapped into the snap groove (302), and the inner side of the buffer ring (304) is a raised curved surface.

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