A PE pipe sizing device

Abstract

This utility model discloses a PE pipe sizing device, belonging to the field of PE pipe production technology. The PE pipe sizing device includes a cooling base and a sizing pipe. The sizing pipe is inserted into the cooling base, and the sizing pipe and the cooling base surround a cooling cavity. Several first water inlet pipes communicating with the cooling cavity are inserted into the cooling base, and the first water inlet pipes are connected to an external water source. Several water inlets communicating with the cooling cavity are provided inside the sizing pipe. A lower sealing water groove, a spiral channel, and an upper sealing water groove are provided inside the sizing pipe, with the lower sealing water groove communicating with the water inlets. The PE pipe sizing device provided by this utility model allows a water film on the outer wall of the PE pipe to initially form at the lower sealing water groove. Through replenishment and filling by the spiral channel and the upper sealing water groove, the formed water film structure is complete and not easily damaged. Furthermore, any damage to the water film can be replenished by water at the spiral channel. When the PE pipe moves through the lower part of the sizing pipe, the water film will not be damaged.

Description

Technical Field

[0001] This utility model belongs to the field of PE pipe production technology, specifically relating to a PE pipe sizing device. Background Technology

[0002] In the PE pipe production process, the PE pipe preform extruded by the extruder must be cooled and solidified before it can be truly formed into a pipe.

[0003] The cooling and shaping of the pipe begins inside the sizing sleeve of the extruder, where it is cooled by a water-sealing ring that mates with the sizing sleeve. When cooling is achieved using the sizing sleeve and water-sealing ring, water exits through the water-sealing ring, forming a water film on the outer wall of the PE pipe. This water film not only cools the pipe but also lubricates the sizing sleeve and the pipe, reducing friction between them.

[0004] However, when using a sealing ring for drainage, although the discharged water can form a water film on the PE pipe, as the PE pipe moves, the formed water film will aggregate into beads due to factors such as gravity and inertia. This leads to damage to the water film, resulting in temperature deviations in various parts of the PE pipe and uneven internal stress in the produced PE pipe, affecting the quality of the finished PE pipe. Therefore, this application proposes a PE pipe sizing device. Utility Model Content

[0005] The purpose of this invention is to provide a PE pipe sizing device to solve the problem mentioned in the background art that, as the PE pipe moves, the water film formed will aggregate into beads due to factors such as gravity and inertia, which leads to water film damage and temperature deviations in various parts of the PE pipe.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PE pipe sizing device, comprising a cooling base and a sizing pipe, wherein the sizing pipe is inserted into the cooling base, and the sizing pipe and the cooling base surround a cooling cavity, wherein a plurality of first water inlet pipes communicating with the cooling cavity are inserted into the cooling base, and the first water inlet pipes are connected to an external water source.

[0007] The sizing pipe is provided with several water inlets that communicate with the cooling chamber;

[0008] The sizing pipe is provided with a lower sealing water trough, a spiral channel, and an upper sealing water trough. The lower sealing water trough is connected to the water inlet and the lower sealing water trough is connected to the spiral channel. The spiral channel is spirally distributed on the inner wall of the sizing pipe, and the end of the spiral channel is connected to the upper sealing water trough.

[0009] The sizing tube has several water filter tanks on the side away from the cooling chamber.

[0010] A sealing mechanism is provided at the connection between the sizing tube and the cooling base. The sealing mechanism includes a groove and a sealing ring, with the sealing ring fitted into the groove.

[0011] Preferably, an end plate is provided on the upper side of the cooling base, and the end plate is detachably connected to the cooling base by bolts.

[0012] Preferably, there are six first water inlet pipes, and the six first water inlet pipes are arranged in a circumferential array around the center line of the cooling base.

[0013] Preferably, the filter tanks are circumferentially distributed on the sizing pipe around the center line of the sizing pipe.

[0014] Preferably, a sealing seat is provided at the cooling base, and a sealing groove is formed between the sealing seat and the cooling base.

[0015] Preferably, the sealing seat has several oil inlet pipes that communicate with the sealing groove, and the oil inlet pipes are connected to an external oil storage tank.

[0016] Preferably, an upper cooling pipe is provided at the sizing pipe, and an upper cooling pipe is provided inside the upper cooling pipe. The upper cooling pipe is sleeved on the outside of the sizing pipe. A second water inlet pipe and a drain pipe are inserted at the upper cooling pipe. The second water inlet pipe and the drain pipe are connected to the cooling mechanism on the outside. The cooling mechanism is used to drive the coolant to flow in the upper cooling pipe.

[0017] Preferably, the cooling mechanism is equipped with a power pump, a temperature control device, and a circulation pipe.

[0018] Preferably, the upper cooling pipe is spirally distributed inside the upper cooling pipe.

[0019] Preferably, both the second inlet pipe and the outlet pipe penetrate the upper cooling pipe.

[0020] Beneficial effects:

[0021] This utility model provides a PE pipe sizing device. Water in the cooling chamber enters the lower sealing water tank through the inlet. The water can spread along the spiral channel to cover the inner wall of the bottom of the sizing pipe, and the top of the spiral channel is intercepted by the upper sealing water tank. After the water reaches the upper sealing water tank, it forms a ring-shaped water tank structure. The PE pipe moves along the inner wall of the sizing pipe, and the water adheres to the outer wall of the PE pipe, forming a water film on the outer wall of the PE pipe. The water film cools the PE pipe and reduces the friction between the PE pipe and the inner wall of the sizing pipe. The water film on the outer wall of the PE pipe is initially formed at the lower sealing water tank. Through the replenishment and filling by the spiral channel and the upper sealing water tank, the water film structure is complete and not easily damaged. Moreover, if the water film is damaged, it can be replenished by the water at the spiral channel. When the PE pipe moves in the lower pipe of the sizing pipe, the water film will not be damaged. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the PE pipe sizing device in this utility model;

[0023] Figure 2 This is a bottom view of the PE pipe sizing device in this utility model;

[0024] Figure 3 This is a top view of the PE pipe sizing device of this utility model;

[0025] Figure 4 This utility model Figure 3 Sectional view at point AA.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. End plate; 2. Cooling base; 3. Sizing pipe; 301. Water inlet; 302. Spiral channel; 303. Upper sealing water tank; 304. Water filter tank; 4. Cooling chamber; 5. First water inlet pipe; 6. Sealing seat; 7. Sealing groove; 8. Oil inlet pipe; 9. Upper cooling pipe; 10. Upper cooling pipe; 11. Second water inlet pipe; 12. Drain pipe. Detailed Implementation

[0028] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0029] like Figures 1-4 As shown in the figure, the PE pipe sizing device provided in this embodiment includes a cooling base 2 and a sizing pipe 3. The rough PE pipe blank is inserted into the sizing pipe 3 and shaped by the sizing pipe 3. The cooling cavity 4 formed by the cooling base 2 and the sizing pipe 3 can cool the PE pipe and fix its shape. The sizing pipe 3 is inserted into the cooling base 2, and the sizing pipe 3 and the cooling base 2 form the cooling cavity 4. Several first water inlet pipes 5 connected to the cooling cavity 4 are inserted into the cooling base 2. Connected to the external water source, the cooling base 2 is equipped with an end plate 1 on its upper side. The end plate 1 and the cooling base 2 are detachably connected by bolts. The sizing pipe 3 is divided into an upper pipe and a lower pipe from top to bottom. The upper cooling pipe 9 is set at the upper pipe. The water inlet 301, the lower sealing water trough, the spiral channel 302, and the upper sealing water trough 303 are set at the lower pipe. The lower pipe port performs preliminary shaping and cooling work on the PE pipe. The water film at this point is not damaged, which allows the PE pipe to cool down at the same rate when it is initially cooled down, resulting in less internal stress in the PE pipe.

[0030] It should be noted that there are six first water inlet pipes 5, and the six first water inlet pipes 5 are arranged in a circumferential array around the center line of the cooling base 2.

[0031] In practical use, external water enters the cooling chamber 4 through the first water inlet pipe 5. The water carries away the heat of the PE pipe and accelerates the cooling and molding speed of the PE pipe.

[0032] Specifically, the sizing pipe 3 is provided with several water inlets 301 that communicate with the cooling chamber 4. The water inlets 301 penetrate the inner wall of the sizing pipe 3, and the water in the cooling chamber 4 flows through the water inlets 301 to the inside of the sizing pipe 3 and comes into contact with the PE pipe inserted into the sizing pipe 3.

[0033] It should be noted that the sizing pipe 3 is equipped with a lower sealing water trough, a spiral channel 302, and an upper sealing water trough 303. The lower sealing water trough is connected to the inlet 301 and the spiral channel 302. The spiral channel 302 is spirally distributed on the inner wall of the sizing pipe 3, and its end is connected to the upper sealing water trough 303. Water in the cooling chamber 4 enters the lower sealing water trough through the inlet 301. The water can flow along the spiral channel 302 and be distributed on the inner wall of the sizing pipe 3. The top of the spiral channel 302 is intercepted by the upper sealing water trough 303. After the water reaches the upper sealing water trough 303, it forms a ring-shaped water trough structure. The PE pipe flows along the sizing pipe... As the inner wall of pipe 3 moves, water adheres to the outer wall of the PE pipe, forming a water film. This water film cools the PE pipe and reduces friction between the PE pipe and the inner wall of the sizing pipe 3. The water film on the outer wall of the PE pipe is initially formed at the lower sealing groove. Through the replenishment and filling by the spiral channel 302 and the upper sealing groove 303, the water film structure is complete. The water film is not easily damaged during the movement along the bottom of the sizing pipe 3. As a result, the friction between the PE pipe and the inner wall of the sizing pipe 3 is small, and the temperature and cooling rate are uniform throughout the PE pipe. This results in lower stress on the inner wall of the PE pipe and a more robust structure.

[0034] It should be noted that several water filter tanks 304 are provided on the side of the sizing pipe 3 away from the cooling chamber 4. The water filter tanks 304 are distributed circumferentially on the sizing pipe 3 around the center line of the sizing pipe 3. As the PE pipe moves along the sizing pipe 3, the water film formed on the PE pipe will accumulate into beads. The water filter tanks 304 are for allowing the water droplets formed on the PE pipe to pass through, thereby removing excess water from the PE pipe.

[0035] To prevent water leakage in the cooling chamber 4, a sealing seat 6 is provided at the cooling base 2. A sealing groove 7 surrounds the sealing seat 6 and the cooling base 2. Several oil inlet pipes 8 are inserted into the sealing seat 6 and communicate with the sealing groove 7. The oil inlet pipes 8 are connected to an external oil storage tank. A sealing mechanism is provided at the connection between the sizing pipe 3 and the cooling base 2. The sealing mechanism includes a groove and a sealing ring. The sealing ring is fitted into the groove. Common sealing oil is used. The oil is sent into the interior of the sealing groove 7 through the oil inlet pipes 8 and forms an oil film at the location of the sealing mechanism. The oil film seals the connection between the cooling base 2 and the sizing pipe 3, preventing water leakage in the cooling chamber 4.

[0036] To ensure the PE pipe can be fully shaped, an upper cooling pipe 9 is installed at the sizing pipe 3. Inside the upper cooling pipe 9, spirally distributed upper cooling pipes 10 are installed. The upper cooling pipes 10 are sleeved on the outside of the sizing pipe 3. A second water inlet pipe 11 and a drain pipe 12 are inserted into the upper cooling pipes 10. Both the second water inlet pipe 11 and the drain pipe 12 penetrate the upper cooling pipe 9 and are connected to the cooling mechanism on the outside. The cooling mechanism is equipped with a power pump, a temperature control device, and a circulation pipe. The cooling mechanism can drive the coolant to flow in the upper cooling pipes 10 to remove excess heat from the PE pipe. The first water inlet pipe 5 at the cooling chamber 4 does not require a corresponding circulation pipe. It is only necessary to use a power pump to send cooler water into the cooling chamber 4.

[0037] Through the internal structure of the cooling chamber 4 and the upper cooling pipe 9, the PE pipe can be cooled twice, which can lower the temperature of the PE pipe and allow the PE pipe to be formed quickly.

[0038] In summary, this utility model embodiment provides a PE pipe sizing device. Water in the cooling chamber 4 enters the lower sealing water tank through the inlet 301. The water can spread along the spiral channel 302 to cover the inner wall of the bottom of the sizing pipe 3. The top of the spiral channel 302 is intercepted by the upper sealing water tank 303. After the water reaches the upper sealing water tank 303, it forms an annular water tank structure. The PE pipe moves along the inner wall of the sizing pipe 3, and the water adheres to the outer wall of the PE pipe, forming a water film on the outer wall of the PE pipe. The water film cools the PE pipe and reduces the friction between the PE pipe and the inner wall of the sizing pipe 3. The water film on the outer wall of the PE pipe is initially formed at the lower sealing water tank. Through the replenishment and filling by the spiral channel 302 and the upper sealing water tank 303, the formed water film structure is complete and not easily damaged.

[0039] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A PE pipe sizing device, comprising a cooling base (2) and a sizing pipe (3), characterized in that, The sizing pipe (3) is inserted into the cooling base (2), and the sizing pipe (3) and the cooling base (2) surround the cooling cavity (4). Several first water inlet pipes (5) that communicate with the cooling cavity (4) are inserted into the cooling base (2), and the first water inlet pipes (5) are connected to the water source outside. The sizing pipe (3) is provided with several water inlets (301) that communicate with the cooling chamber (4); The sizing pipe (3) is provided with a lower sealing water trough, a spiral channel (302) and an upper sealing water trough (303). The lower sealing water trough is connected to the water inlet (301) and the lower sealing water trough is connected to the spiral channel (302). The spiral channel (302) is spirally distributed on the inner wall of the sizing pipe (3). The end of the spiral channel (302) is connected to the upper sealing water trough (303). The sizing pipe (3) has several water filter tanks (304) on the side away from the cooling chamber (4); A sealing mechanism is provided at the connection between the sizing pipe (3) and the cooling base (2). The sealing mechanism includes a groove and a sealing ring, with the sealing ring fitted into the groove.

2. The PE pipe sizing device as described in claim 1, characterized in that, The cooling base (2) is provided with an end plate (1) on its upper side, and the end plate (1) is detachably connected to the cooling base (2) by bolts.

3. The PE pipe sizing device as described in claim 1, characterized in that, There are six first water inlet pipes (5), and the six first water inlet pipes (5) are arranged in a circumferential array around the center line of the cooling base (2).

4. The PE pipe sizing device as described in claim 1, characterized in that, The filter tank (304) is circumferentially distributed on the sizing pipe (3) around the center line of the sizing pipe (3).

5. A PE pipe sizing device as described in claim 1, characterized in that, A sealing seat (6) is provided at the cooling base (2), and a sealing groove (7) is formed between the sealing seat (6) and the cooling base (2).

6. A PE pipe sizing device as described in claim 5, characterized in that, Several oil inlet pipes (8) connected to the sealing groove (7) are inserted into the sealing seat (6), and the oil inlet pipes (8) are connected to the external oil storage tank.

7. A PE pipe sizing device as described in claim 1, characterized in that, An upper cooling pipe (9) is provided at the sizing pipe (3), and an upper cooling pipe (10) is provided inside the upper cooling pipe (9). The upper cooling pipe (10) is sleeved on the outside of the sizing pipe (3). A second water inlet pipe (11) and a drain pipe (12) are inserted into the upper cooling pipe (10). The second water inlet pipe (11) and the drain pipe (12) are connected to the cooling mechanism on the outside. The cooling mechanism is used to drive the coolant to flow in the upper cooling pipe (10).

8. A PE pipe sizing device as described in claim 7, characterized in that, The cooling mechanism is equipped with a power pump, a temperature control device, and a circulation pipe.

9. A PE pipe sizing device as described in claim 8, characterized in that, The upper cooling pipe (10) is spirally distributed inside the upper cooling pipe (9).

10. A PE pipe sizing device as described in claim 9, characterized in that, The second water inlet pipe (11) and the drain pipe (12) both penetrate the upper cooling pipe (9).

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