A device for removing the inner flange of an HDPE pipe

Abstract

The utility model provides a kind of HDPE tubular product inner flanging removal device, belong to tubular product processing technical field.It has solved the problem of lower efficiency of tubular product inner flanging removal in prior art.This HDPE tubular product inner flanging removal device, including rotating shaft, the rotating shaft is coaxially sleeved with first support ring and is coaxially connected with the cutter head in the shape of cylinder, the cutter head has the cutting edge being arranged in parallel with the rotating shaft on the end portion of the rotating shaft, and the cutting edge is arranged in the shape of ring sawtooth along the circumferential direction of the cutter head, the outer diameter of the first support ring and the outer diameter of the cutting edge are consistent.The utility model has the advantages of being able to greatly improve the efficiency of tubular product inner flanging removal.

Description

Technical Field

[0001] This utility model belongs to the field of pipe processing technology and relates to a device for removing the inner flange of HDPE pipes. Background Technology

[0002] In HDPE building pipelines, adjacent HDPE pipes are joined using heat fusion, resulting in an inward flaring at the joint. This flaring reduces the actual pipe diameter, affecting drainage efficiency. Furthermore, solid waste can accumulate at the flaring, potentially causing blockages and hindering drainage. Currently, operators typically remove the flaring by cutting sandpaper into strips, rolling them around a thin stick or a special handle, and manually rotating them inside the pipe. Alternatively, they may use a suitable-sized semi-circular or round file to manually file along the circumference of the inner wall. However, these methods are time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a device for removing the inner flange of HDPE pipes. The technical problem this invention aims to solve is how to improve the efficiency of removing the inner flange of pipes.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] An HDPE pipe internal flange removal device includes a rotating shaft, characterized in that a first support ring is coaxially mounted on the rotating shaft and a cylindrical cutter head is coaxially connected thereto. The end of the cutter head facing away from the rotating shaft has a cutting edge arranged parallel to the rotating shaft, and the cutting edge is arranged in a ring-shaped serration along the circumference of the cutter head. The outer diameter of the first support ring is consistent with the outer diameter of the cutting edge.

[0006] In use, the rotating shaft of this HDPE pipe internal flange removal device is connected to a power source, so that the power source can drive the entire internal flange removal device to rotate when it is started. The operator only needs to push this internal flange removal device along the axial direction of the HDPE pipe. The cutting edge of the high-speed rotating cutter head slowly approaches the flange on the inner wall of the connection between the two HDPE pipes and cuts off the flange. The operation is simple and can greatly improve the efficiency of internal flange removal.

[0007] In addition, the first support ring ensures that the internal flange removal device is always on the same axis as the HDPE pipe during operation, which improves the stability of the operation of the internal flange removal device and can improve the quality of internal flange removal of the pipe.

[0008] In the aforementioned HDPE pipe internal flange removal device, the outer peripheral wall of the rotating shaft has an annular protrusion, and the end of the cutter head facing the rotating shaft has an inwardly folded connecting portion. The cutter head covers the outside of the annular protrusion, and the connecting portion of the cutter head is connected to the annular protrusion of the rotating shaft by several bolts. This allows for a detachable connection between the cutter head and the rotating shaft, and provides good stability after connection. It also facilitates operators in selecting different sized cutter heads and first support rings for assembly to match different specifications of HDPE pipes, thereby improving the versatility and adaptability of the device.

[0009] In the aforementioned HDPE pipe internal flange removal device, at least one extension rod is coaxially connected to the rotating shaft. A second support ring with the same outer diameter as the blade is coaxially fitted onto the extension rod. A hexagonal connecting rod is coaxially connected to the outermost extension rod. In practical applications, the length of HDPE pipes is generally 1-3 meters, or even longer. The number of extension connecting rods can be selected according to the actual length of the pipe, thereby improving the versatility and adaptability of the device. The hexagonal connecting rod facilitates the connection between this internal flange removal device and an electric drill, making it easier for the electric drill chuck to clamp the device. This allows the entire internal flange removal device to rotate as soon as the electric drill is started, making operation more convenient.

[0010] In the aforementioned HDPE pipe internal flange removal device, the first support ring includes a first bearing and a first support ring fitted on the first bearing, and the second support ring includes a second bearing and a second support ring fitted on the second bearing. The outer diameters of both the first and second support rings are consistent with the outer diameter of the blade. The first and second support rings prevent the first and second support rings from scratching the inner wall of the HDPE pipe during rotation. Furthermore, the use of bearings ensures that the internal flange removal device and the pipe are aligned on the same axis, improving the stability of the device's operation.

[0011] In the aforementioned HDPE pipe internal flange removal device, the hexagonal connecting rod has a cylindrical connecting cap, which is threaded onto the extension rod, which is threaded onto the rotating shaft. The cutter head, the first support ring, and the extension rod are detachable from the rotating shaft, as are the second support ring and the hexagonal connecting rod with the extension rod. Furthermore, this internal flange removal device has a simple structure, is lightweight, and is easy to transport and carry. It also allows operators to easily select different sizes of cutter heads and first support rings for assembly to match different specifications of HDPE pipes, thereby improving the device's versatility and adaptability.

[0012] In the aforementioned HDPE pipe internal flange removal device, a hexagonal connecting rod coaxially arranged with the rotating shaft is threaded onto the rotating shaft. When the HDPE pipe is short, an extension rod may not be required; instead, a hexagonal connecting rod coaxially arranged with the rotating shaft can be directly threaded onto the rotating shaft. Additionally, one or more of the first support rings may be installed on the rotating shaft to improve the operational stability of the internal flange removal device.

[0013] Compared with existing technologies, the advantages of this HDPE pipe internal flange removal device are:

[0014] 1. The rotating shaft of this HDPE pipe internal flange removal device can be connected to a power source, so that the power source can drive the entire internal flange removal device to rotate when it is started. The operator only needs to push this internal flange removal device along the axial direction of the HDPE pipe. The cutting edge of the high-speed rotating cutter head slowly approaches the flange on the inner wall of the connection between the two HDPE pipes and cuts off the flange. The operation is simple and can greatly improve the efficiency of internal flange removal.

[0015] 2. By selecting different sized cutter heads and the first support ring, the operator can adapt the internal flange removal device to HDPE pipes of different specifications, improving the device's versatility and adaptability. At the same time, the first support ring ensures that the internal flange removal device and the HDPE pipe are always on the same axis during operation, improving the stability of the device's operation and enhancing the quality of internal flange removal. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the HDPE pipe inner flange removal device in Embodiment 1.

[0017] Figure 2 This is an exploded view of the HDPE pipe internal flange removal device in Example 1.

[0018] Figure 3 This is a cross-sectional view of the HDPE pipe internal flange removal device in use in Example 1.

[0019] Figure 4 This is a three-dimensional structural diagram of the HDPE pipe inner flange removal device in Embodiment 2.

[0020] In the figure, 1 is the rotating shaft; 1a is the annular protrusion; 2 is the first support ring; 2a is the first bearing; 2b is the first support ring; 3 is the cutter head; 3a is the blade; 3b is the connecting part; 4 is the bolt; 5 is the extension rod; 6 is the second support ring; 6a is the second bearing; 6b is the second support ring; 7 is the hexagonal connecting rod; 7a is the connecting cap; and 8 is the HDPE pipe. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] Example 1

[0023] A device for removing the inner flange of HDPE pipes, as described in the following article. Figure 1-3 The device includes a rotating shaft 1, characterized in that a first support ring 2 is coaxially mounted on the rotating shaft 1 and a cylindrical cutter head 3 is coaxially connected thereto. The end of the cutter head 3 facing away from the rotating shaft 1 has a cutting edge 3a arranged parallel to the rotating shaft 1, and the cutting edge 3a is arranged in a ring-shaped serration along the circumference of the cutter head 3. The outer diameter of the first support ring 2 is consistent with the outer diameter of the cutting edge 3a.

[0024] Reference Figure 1 , Figure 2 and Figure 3 Specifically, the outer peripheral wall of the rotating shaft 1 has an annular protrusion 1a, and the end of the cutter head 3 facing the rotating shaft 1 has an inwardly folded connecting part 3b. The cutter head 3 is covered on the outside of the annular protrusion 1a, and the connecting part 3b of the cutter head 3 is connected to the annular protrusion 1a of the rotating shaft 1 by several bolts 4.

[0025] Reference Figure 1 , Figure 2 and Figure 3 Furthermore, at least one extension rod 5 is coaxially connected to the rotating shaft 1, and a second support ring 6 with the same outer diameter as the blade 3a is coaxially fitted on the extension rod 5. A hexagonal connecting rod 7 is coaxially connected to the outermost extension rod 5.

[0026] Reference Figure 1 , Figure 2 and Figure 3 Specifically, the first support ring 2 includes a first bearing 2a and a first support ring 2b fitted on the first bearing 2a, and the second support ring 6 includes a second bearing 6a and a second support ring 6b fitted on the second bearing 6a. The outer diameters of both the first support ring 2b and the second support ring 6b are consistent with the outer diameter of the blade 3a.

[0027] In this embodiment, the hexagonal connecting rod 7 preferably has a cylindrical connecting cap 7a, which is threaded onto the extension rod 5, and the extension rod 5 is threaded onto the rotating shaft 1; preferably, the blade 3a is a continuous serrated blade; preferably, the first support ring 2b and the second support ring 6b are made of plastic to prevent scratching the inner wall of the HDPE pipe 8, but they can also be made of rubber or silicone.

[0028] The working principle of this HDPE pipe internal flange removal device is explained below:

[0029] The operator selects the appropriate size of the cutter head 3, the first support ring 2, and the second support ring 6 according to the diameter of the HDPE pipe. Then, the cutter head 3 is placed on the outside of the annular protrusion 1a and connected to the annular protrusion 1a of the rotating shaft 1 by several bolts 4. The first support ring 2 and the second support ring 6 are respectively fitted onto the rotating shaft 1 and the extension rod 5. Then, the electric drill chuck is clamped to the hexagonal connecting rod 7 on the extension rod 5.

[0030] The operator then places the entire inner flange removal device into the HDPE pipe 8. When the flange is about 10 cm away from the inner wall of the connection between the two HDPE pipes 8, the operator starts the electric drill. After waiting for the entire inner flange removal device to run smoothly, the operator pushes the inner flange removal device along the axis of the HDPE pipe 8. The cutting edge 3a of the high-speed rotating cutter head 3 slowly approaches the flange of the inner wall of the connection between the two HDPE pipes 8 and cuts off the flange.

[0031] By selecting different sizes of the cutter head 3, the first support ring 2, and the second support ring 6, this internal flange removal device can adapt to HDPE pipes of different specifications, improving the device's versatility and adaptability. In addition, the cutter head 3, the first support ring 2, and the extension rod 5 are detachable from the rotating shaft 1, and the second support ring 6 and the hexagonal connecting rod 7 are detachable from the extension rod 5. Furthermore, this internal flange removal device has a simple structure and is lightweight, making it easy to transport and carry. At the same time, the first support ring 2 and the second support ring 6 ensure that the internal flange removal device and the HDPE pipe 8 are always on the same axis during operation, improving the stability of the internal flange removal device's operation.

[0032] Example 2

[0033] This embodiment is basically the same in structure and principle as Embodiment 1, the difference being: (Refer to...) Figure 4 The rotating shaft 1 is not provided with an extension rod 5. At the same time, a hexagonal connecting rod 7 is threadedly connected to the rotating shaft 1 and is arranged coaxially therewith. In addition, one or more first support rings 2b can be provided on the rotating shaft 1.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A device for removing the inner flange of HDPE pipe, comprising a rotating shaft (1), characterized in that, A first support ring (2) is coaxially mounted on the rotating shaft (1) and a cylindrical cutter head (3) is coaxially connected to it. The end of the cutter head (3) facing away from the rotating shaft (1) has a cutting edge (3a) arranged parallel to the rotating shaft (1), and the cutting edge (3a) is arranged in a ring-shaped sawtooth pattern along the circumference of the cutter head (3). The outer diameter of the first support ring (2) is the same as the outer diameter of the cutting edge (3a).

2. The HDPE pipe internal flange removal device according to claim 1, characterized in that, The outer peripheral wall of the rotating shaft (1) has an annular protrusion (1a), and the end of the cutter head (3) facing the rotating shaft (1) has an inwardly folded connecting part (3b). The cutter head (3) covers the outside of the annular protrusion (1a), and the connecting part (3b) of the cutter head (3) is connected to the annular protrusion (1a) of the rotating shaft (1) by several bolts (4).

3. The HDPE pipe internal flange removal device according to claim 1 or 2, characterized in that, At least one extension rod (5) is coaxially connected to the rotating shaft (1). A second support ring (6) with the same outer diameter as the blade (3a) is coaxially fitted on the extension rod (5). A hexagonal connecting rod (7) is coaxially connected to the outermost extension rod (5).

4. The HDPE pipe internal flange removal device according to claim 3, characterized in that, The first support ring (2) includes a first bearing (2a) and a first support ring (2b) fitted on the first bearing (2a). The second support ring (6) includes a second bearing (6a) and a second support ring (6b) fitted on the second bearing (6a). The outer diameters of both the first support ring (2b) and the second support ring (6b) are consistent with the outer diameter of the blade (3a).

5. The HDPE pipe internal flange removal device according to claim 3, characterized in that, The hexagonal connecting rod (7) has a cylindrical connecting cap (7a), which is threaded onto the extension rod (5), and the extension rod (5) is threaded onto the rotating shaft (1).

6. The HDPE pipe internal flange removal device according to claim 1 or 2, characterized in that, The rotating shaft (1) is threaded with a hexagonal connecting rod (7) that is coaxial with it.

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