Sleeve for connecting straight pipes

Abstract

The utility model relates to the field of pipeline connecting structures, in particular to a sleeve for connecting straight pipes. The device comprises a middle cylinder and two groups of outer cylinder assemblies which are symmetrically arranged along the axial direction of the middle cylinder; the outer cylinder assembly comprises an outer cylinder connected to the axial end face of the middle cylinder and a socket ring coaxially arranged on the outer circumferential face of the outer cylinder, internal threads are arranged on the inner circumferential face of the outer cylinder, and a plurality of notches are evenly distributed in the socket ring. The outer barrel and the straight pipes are in sealed connection through the threads, the outer barrel assembly and the middle barrel are relatively short in length and light in weight, communication operation of the two straight pipes is facilitated, time is saved, and construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection structures, and in particular to a sleeve for straight pipe connections. Background Technology

[0002] In water conservancy projects, water pipes need to be pre-buried. Straight pipes can be used as drainage pipes for water transportation. Straight pipes are currently widely used in water supply systems, sewage systems, and municipal drainage. When laying multiple pipes, connecting structures are needed to connect any two adjacent straight pipes to assemble them into a complete water pipe system.

[0003] Existing straight pipes can be connected using a sleeve structure. During connection, two straight pipes are inserted into the sleeve from both sides and sealed with rubber rings. However, since straight pipes are generally long and heavy, it is inconvenient to insert them into the sleeve, which is time-consuming and affects construction efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a sleeve for connecting straight pipes. The outer sleeve and the straight pipe are connected in a sealed manner through threads. The outer sleeve assembly and the intermediate sleeve are relatively short in length and light in weight, which facilitates the connection operation of two straight pipes, saves time, and improves construction efficiency.

[0005] The technical solution of this utility model is a sleeve for straight pipe connection, which includes an intermediate cylinder and two sets of outer cylinder assemblies symmetrically arranged about the intermediate cylinder along the axial direction; the outer cylinder assembly includes an outer cylinder connected to the axial end face of the intermediate cylinder and a socket ring coaxially arranged on the outer circumferential surface of the outer cylinder, the inner circumferential surface of the outer cylinder has an internal thread, and the socket ring has multiple notches evenly distributed on it.

[0006] Preferably, annular reinforcing ribs are coaxially arranged on the outer circumferential surface of the outer cylinder, and multiple reinforcing ribs are arranged side by side along the axial direction.

[0007] Preferably, an installation ring is integrally formed on the inner circumferential surface of the intermediate cylinder, and a filter screen is provided on the installation ring.

[0008] Preferably, the top of the intermediate cylinder has a convex ring portion with a groove, a bearing seat is fitted in the groove, a rotating shaft is threaded through the inner ring of the bearing seat, a handle and a valve plate are respectively connected to the top and bottom of the rotating shaft, the valve plate is located inside the intermediate cylinder, and a nut that abuts against the top of the bearing seat is threaded onto the rotating shaft.

[0009] Preferably, the outer cylinder or the intermediate cylinder is provided with a set of pressure injection holes and pressure holes.

[0010] Preferably, both the outer cylinder and the middle cylinder are transparent.

[0011] This utility model also proposes another technical solution for a sleeve for straight pipe connection, which includes an outer cylinder and a socket ring coaxially disposed on the outer circumferential surface of the outer cylinder; both inner circumferential surfaces on both sides of the outer cylinder have internal threads; and multiple notches are evenly distributed on the socket ring.

[0012] Preferably, the upper half of the outer cylinder has evenly distributed mesh holes.

[0013] Preferably, the outer cylinder is provided with a set of pressure injection holes and pressure holes.

[0014] Preferably, the outer cylinder is a transparent structure.

[0015] Compared with existing technologies, this utility model has the following beneficial technical effects: The outer cylinder and straight pipe in this utility model achieve a sealed connection through threads, allowing the use of outer cylinders with internal threads on both sides for pipe connection. Alternatively, two outer cylinders with internal threads on one side can be used for pipe connection, with an intermediate cylinder connected between the two outer cylinders. The outer cylinder assembly and intermediate cylinder are relatively short and lightweight, facilitating worker operation, saving time, and improving construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure when connecting a straight pipe according to Embodiment 1 of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of Embodiment 2 of this utility model;

[0019] Figure 4 This is a structural cross-sectional view of Embodiment 3 of the present invention;

[0020] Figure 5 This is a structural schematic diagram of Embodiment 4 of the present utility model.

[0021] Reference numerals: 1. Outer cylinder; 2. Intermediate cylinder; 3. Socket ring; 31. Notch; 4. Reinforcing rib; 5. Mounting ring; 6. Filter screen; 7. Bearing seat; 8. Shaft; 9. Handle; 10. Valve plate. Detailed Implementation

[0022] Example 1

[0023] like Figure 1 and Figure 2 As shown in the figure, the sleeve for straight pipe connection proposed in this embodiment includes an intermediate cylinder 2 and two sets of outer cylinder assemblies arranged symmetrically about the intermediate cylinder 2 along the axial direction.

[0024] The outer cylinder assembly includes an outer cylinder 1 connected to the axial end face of the intermediate cylinder 2 and a socket ring 3 coaxially disposed on the outer circumferential surface of the outer cylinder 1; the intermediate cylinder 2 and the outer cylinder 1 can be heat-fused together. Both the outer cylinder 1 and the intermediate cylinder 2 are transparent structures and can be made of transparent plastic, making it easy to observe the internal water flow. The inner circumferential surface of the outer cylinder 1 has internal threads, which are compatible with straight pipes with external threads at the ends, and a seal can be achieved through threaded connection. The socket ring 3 has multiple notches 31 evenly distributed on it. It is used with pliers with a boss on the inner side of the pliers' arc-shaped body. The pliers are inserted into the notches 31 through the boss, and the worker rotates the pliers to rotate the outer cylinder 1 and install it onto the straight pipe. The operation is simple.

[0025] To enhance the structural strength of the outer cylinder assembly, annular reinforcing ribs 4 are coaxially arranged on the outer circumferential surface of the outer cylinder 1. Multiple reinforcing ribs 4 are arranged side by side along the axial direction. It should be noted that the reinforcing ribs 4 can be arranged in a mesh pattern, evenly arranged along the outer circumference of the outer cylinder 1, or evenly arranged along the central axis of the outer cylinder 1, depending on the actual arrangement requirements.

[0026] In this embodiment, the outer cylinder 1 and the straight pipe are connected in a sealed manner via threads. After the two outer cylinders 1 are rotated and installed onto the two straight pipes using pliers, the intermediate cylinder 2 is connected between the two outer cylinders 1. The outer cylinder assembly and the intermediate cylinder 2 are relatively short and lightweight, allowing workers to operate only the outer cylinder assembly and the intermediate cylinder 2, facilitating the connection of the two straight pipes, saving time, and improving construction efficiency.

[0027] Example 2

[0028] This embodiment proposes a sleeve for straight pipe connections. Compared to Embodiment 1, in this embodiment, as follows... Figure 3 As shown, an installation ring 5 is integrally provided on the inner circumference of the intermediate cylinder 2, and a filter screen 6 is provided on the installation ring 5 to add a filtration function to the connected pipeline.

[0029] Example 3

[0030] This embodiment proposes a sleeve for straight pipe connections. Compared to Embodiment 1, in this embodiment, as follows... Figure 4 As shown, the top of the intermediate cylinder 2 has a raised ring with a groove, where a bearing seat 7 is engaged. A rotating shaft 8 passes through the inner ring of the bearing seat 7. A handle 9 and a valve plate 10 are connected to the top and bottom of the rotating shaft 8, respectively. The valve plate 10 is located inside the intermediate cylinder 2, and the opening and closing of the internal channel of the intermediate cylinder 2 is controlled by rotating the valve plate 10. The rotating shaft 8 is screwed into the countersunk hole of the valve plate 10 through a threaded fit, and a nut A with a threaded sleeve on the outside of the rotating shaft 8 is set in the countersunk hole to lock the rotating shaft 8 and the valve plate 10. The handle 9 and the valve plate 10 are in the same position, which makes it easy for the worker to determine the position of the inner valve plate 10 by observing the position of the handle 9 from the outside.

[0031] In addition, a nut is threaded onto the rotating shaft 8. After the valve plate 10 is adjusted to the correct position, the nut is rotated, and the nut abuts against the bearing seat 7, thereby preventing the handle 9 and the valve plate 10 from deflecting.

[0032] Example 4

[0033] This embodiment proposes a sleeve for straight pipe connection. Compared to Embodiment 1, in this embodiment, a set of pressure injection holes and pressure holes are provided on the outer cylinder 1 or the intermediate cylinder 2. That is, a set of pressure injection holes and pressure holes are provided on one outer cylinder 1, or a set of pressure injection holes and pressure holes are provided on the intermediate cylinder 2. If the pressure injection holes and pressure holes are located on the outer cylinder 1, their positions are located in the area near the outer side of one end of the intermediate cylinder 2 after the straight pipe is installed, so that the detection medium can be effectively injected into the pipe after the straight pipe is connected. The detection medium can be air or water.

[0034] Both the pressure injection port and the pressure port are sealed with sealing plugs by default. When it is necessary to test the sealing performance of this sleeve, remove the sealing plugs, seal the outer ends of the two straight pipes connected to this sleeve, connect the pressure injection port to an external water injection device or an air injection device, and connect the pressure port to an external pressure testing device. Inject water into the pipeline through the water injection device or add air into the pipeline through the air injection device. After the injection is completed, test the water pressure or air pressure through the corresponding pressure testing device to test the water tightness of the sleeve's sealing connection. If the tested pressure value is lower than the preset value, it indicates that a leak has occurred. If the tested pressure value reaches the preset value, it indicates that the sleeve is of qualified quality and can achieve an effective water tightness seal. By testing the sealing connection performance of each individual sleeve, the water tightness of the individual sleeve can be detected, facilitating timely handling and ensuring construction progress, as well as facilitating subsequent pipeline maintenance.

[0035] Example 5

[0036] like Figure 5 As shown, this embodiment proposes a sleeve for straight pipe connection, including an outer cylinder 1 and a socket ring 3 coaxially disposed on the outer circumferential surface of the outer cylinder 1. The outer cylinder 1 has a transparent structure and can be made of transparent plastic for easy observation of the water flow inside. Both inner circumferential surfaces of the outer cylinder 1 have internal threads for rotational installation onto a straight pipe with a matching external thread. Multiple reinforcing ribs 4 are coaxially disposed on the outer circumferential surface of the outer cylinder 1 to enhance the structural strength of the entire sleeve. Multiple notches 31 are evenly distributed on the socket ring 3. It is used with pliers whose inner arc-shaped body has a boss. The pliers engage the notches 31 through the boss, and the worker rotates the pliers to rotate the outer cylinder 1, thus rotating it onto the straight pipe. The operation is simple.

[0037] Furthermore, the upper half of the outer cylinder 1 has evenly distributed mesh openings. When this sleeve is buried in water-scarce areas such as deserts, rainwater and other water seeping into the ground will seep into the sleeve through the mesh openings, thus collecting water within the pipe. After the pipe is buried in the soil, water is transported into the pipe, and the water seeps out through the mesh openings into the soil, treating salinization in saline-alkali desert areas. Alternatively, the pipe can be directly installed on the ground, with the mesh openings higher than the ground surface, allowing for direct sprinkler irrigation of plants, suitable for irrigating farmland crops.

[0038] When the upper half of the outer cylinder 1 is not perforated, a set of pressure injection holes and pressure holes can be installed on the outer cylinder 1. Both the pressure injection holes and pressure holes are sealed with sealing plugs by default. When it is necessary to test the sealing performance of this sleeve, remove the sealing plugs, seal the outer ends of the two straight pipes connected to this sleeve, connect the pressure injection holes to an external water injection device or an air injection device, and connect the pressure holes to an external pressure testing device. Inject water into the pipeline through the water injection device or add air into the pipeline through the air injection device. After injection, test the water pressure or air pressure using the corresponding pressure testing device to test the water tightness of the sleeve's sealing connection. If the tested pressure value is lower than the preset value, it indicates a leak; if the tested pressure value reaches the preset value, it indicates that the sleeve is of qualified quality and can achieve an effective water tightness seal. By testing the sealing connection performance of each individual sleeve, the water tightness of each sleeve can be detected, facilitating timely handling and ensuring construction progress, as well as facilitating subsequent pipeline maintenance.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A sleeve for straight pipe connection, characterized in that, include: Intermediate cylinder (2); The outer cylinder assembly consists of two sets arranged symmetrically along the axial direction of the intermediate cylinder (2), including an outer cylinder (1) connected to the axial end face of the intermediate cylinder (2) and a socket ring (3) coaxially arranged on the outer circumferential surface of the outer cylinder (1). The inner circumferential surface of the outer cylinder (1) has an internal thread, and multiple notches (31) are evenly distributed on the socket ring (3).

2. The sleeve for straight pipe connection according to claim 1, characterized in that, The outer cylinder (1) is provided with annular reinforcing ribs (4) on its outer circumferential surface, and multiple reinforcing ribs (4) are arranged side by side along the axial direction.

3. A sleeve for straight pipe connection according to claim 1, characterized in that, An installation ring (5) is integrally provided on the inner circumferential surface of the intermediate cylinder (2), and a filter screen (6) is provided on the installation ring (5).

4. A sleeve for straight pipe connection according to claim 1, characterized in that, The top of the intermediate cylinder (2) has a convex ring, and the convex ring has a groove. A bearing seat (7) is installed in the groove. A rotating shaft (8) is installed through the inner ring of the bearing seat (7). A handle (9) and a valve plate (10) are connected to the top and bottom of the rotating shaft (8) respectively. The valve plate (10) is located inside the intermediate cylinder (2). A nut that abuts against the top of the bearing seat is threaded on the rotating shaft (8).

5. A sleeve for straight pipe connection according to claim 1, characterized in that, A set of pressure injection holes and pressure holes are provided on the outer cylinder (1) or the intermediate cylinder (2).

6. A sleeve for straight pipe connection according to claim 1, characterized in that, Both the outer cylinder (1) and the middle cylinder (2) are transparent.

7. A sleeve for straight pipe connection, characterized in that, include: Outer cylinder (1); both inner circumferential surfaces of the outer cylinder (1) have internal threads; And a socket ring (3) coaxially disposed on the outer circumferential surface of the outer cylinder (1); multiple notches (31) are evenly distributed on the socket ring (3).

8. A sleeve for straight pipe connection according to claim 7, characterized in that, The upper half of the outer cylinder (1) has evenly distributed mesh holes.

9. A sleeve for straight pipe connection according to claim 7, characterized in that, The outer cylinder (1) is provided with a set of pressure injection holes and pressure holes.

10. A sleeve for straight pipe connection according to claim 7, characterized in that, The outer cylinder (1) is a transparent structure.

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