Anti-sagging large-caliber thick-wall pipe
By combining the air-cooling mechanism and the limiting structure, the problem of uneven wall thickness in large-diameter, thick-walled pipes during the extrusion process is solved, achieving rapid cooling and limiting, improving pipe quality and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-03
AI Technical Summary
During the extrusion process, large-diameter, thick-walled pipes experience slow radial cooling and solidification, causing the polymer melt inside the pipe to sag, resulting in uneven wall thickness. This affects quality and service life, and in severe cases, leads to scrapping and increases production costs.
The system employs an air-cooling mechanism, which combines a vortex fan, an inlet duct, an annular exhaust duct, and a horizontal air guide duct to achieve rapid cooling of the pipe. A limiting structure is used to limit the cooling device and prevent sagging.
This effectively avoids uneven pipe wall thickness, improves pipe quality and service life, and reduces production costs.
Smart Images
Figure CN224073024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe technology, specifically to a large-diameter, thick-walled pipe with anti-sagging properties. Background Technology
[0002] Large-diameter thick-walled pipes play an important role in many fields. They are widely used in the construction of large steel structures, such as bridge piling, submarine piling and high-rise building piling. As the main supporting part, large-diameter thick-walled pipes also have important applications in large shaft processing, machining and engineering columns. When producing large-diameter thick-walled pipes, they are shaped by extrusion.
[0003] During the extrusion of large-diameter, thick-walled pipes, due to the thick pipe wall, the radial cooling and solidification rate is slow and the processing temperature is high. The polymer melt inside the pipe flows from top to bottom and sags under the action of gravity, resulting in a phenomenon where the upper wall thickness is smaller and the lower wall thickness is larger, i.e., the sag phenomenon. This phenomenon leads to uneven pipe wall thickness, affecting the quality and service life of the pipe. Severe sag phenomenon can even lead to the scrapping of the pipe and increase production costs. Utility Model Content
[0004] The purpose of this utility model is to provide a large-diameter thick-walled pipe with anti-sagging properties, so as to solve the problems mentioned in the background art, which are that the pipe wall thickness is thick and uneven, which affects the quality and service life of the pipe, and severe sagging may even lead to the scrapping of the pipe and increase production costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter, thick-walled pipe with anti-sagging properties, comprising:
[0006] The device body includes a support base, and an outer mold body is connected to the bottom end of the support base.
[0007] A cooling mechanism is provided on one side of the outer mold body. The cooling mechanism includes a vortex fan. An installation pipe is connected to one side of the vortex fan. An air inlet pipe is inserted inside the installation pipe. One end of the air inlet pipe is connected to an annular exhaust pipe. A horizontal air guide pipe is connected to one side of the annular exhaust pipe.
[0008] Preferably, the surface of the support base has a groove, and the annular exhaust pipe and the horizontal air guide pipe are inserted into the groove of the support base.
[0009] Preferably, a through hole is provided on one side of the inner wall of the groove of the support base, and one end of the air inlet pipe passes through the through hole of the support base and is inserted into the installation pipe.
[0010] Preferably, the inner surface of the annular exhaust pipe has multiple sets of exhaust ports, and the inner wall of the groove of the support base has multiple sets of ventilation ports.
[0011] Preferably, the surface of the support base is connected to a limiting structure, the limiting structure includes a fixed post, an adjusting screw is rotatably connected inside the fixed post, one end of the adjusting screw is connected to a limiting plate, a rubber pad is provided on the inner surface of the limiting plate, and a cover is abutted on the surface of the rubber pad.
[0012] Preferably, a sealing gasket is provided on one end of the cover, and the end of the cover with the sealing gasket is inserted into the groove of the support base for filling and sealing. A threaded groove is provided on one end of the fixing pile, and one end of the adjusting screw is rotatably connected to the threaded groove of the fixing pile.
[0013] Preferably, the inner surface of the limiting plate has a groove, the rubber pad is connected to one side of the inner wall of the groove of the limiting plate, and the rubber pad fills the space between the limiting plate and the cover for cushioning.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By starting the vortex blower, cold outside air is drawn into the installation pipe through the blower. The air is then guided by the inlet pipe into the annular exhaust pipe. The air is then diverted through the horizontal guide pipe connected to one side of the annular exhaust pipe. The cold air is then discharged from the exhaust port on the inner surface of the annular exhaust pipe along the ventilation port on the support base, and enters the cold gap of the feed billet. This achieves the cooling and shaping effect on the pipe, avoiding the problems of uneven pipe wall thickness, which affects the quality and service life of the pipe, and severe sag that leads to pipe scrapping and increases production costs.
[0016] 2. By inserting the end of the cover with the sealing gasket into the groove of the support base for filling and sealing, the annular exhaust pipe is limited. Then, the angle of the limiting plate is rotated, causing the limiting plate to move the adjusting screw inside the threaded groove of the fixed pile, so that the limiting plate moves towards the surface of the cover. This allows the rubber gasket to fill between the limiting plate and the cover for buffering, making flexible contact between the two. The limiting plate limits the cover, thereby achieving the effect of sealing the groove of the support base with the cover and limiting the annular exhaust pipe and the horizontal air guide pipe. Attached Figure Description
[0017] Figure 1 This is a three-dimensional front view of the structure of this utility model;
[0018] Figure 2 This is a three-dimensional sectional view of the structure of this utility model.
[0019] Figure 3 This utility model Figure 2Enlarged 3D structural diagram at point A;
[0020] Figure 4 This is a three-dimensional side view and cross-sectional view of the structure of this utility model;
[0021] Figure 5 This is a partial cross-sectional perspective view of the structure of this utility model from below;
[0022] Figure 6 This is a partial sectional three-dimensional side view of the structure of this utility model.
[0023] In the diagram: 1. Device body; 11. Support base; 12. Outer mold body; 2. Air cooling mechanism; 21. Vortex fan; 22. Installation pipe; 23. Air inlet pipe; 24. Annular exhaust pipe; 25. Air guide horizontal pipe; 3. Limiting structure; 31. Fixing pile; 32. Adjusting screw; 33. Limiting plate; 34. Rubber pad; 35. Cover. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-6 One embodiment provided by this utility model:
[0026] A type of anti-sagging large-diameter thick-walled pipe, comprising:
[0027] The device body 1 includes a support base 11, and an outer mold body 12 is connected to the bottom end of the support base 11. The internal material of the support base 11 is existing technology and can be purchased on the market. It is not considered as a technical protection point of this application, so no further details are made.
[0028] A cooling mechanism 2 is provided on one side of the outer mold body 12. The cooling mechanism 2 includes a vortex fan 21. An installation pipe 22 is connected to one side of the vortex fan 21. An air inlet pipe 23 is inserted inside the installation pipe 22. One end of the air inlet pipe 23 is connected to an annular exhaust pipe 24. One side of the annular exhaust pipe 24 is connected to a horizontal air guide pipe 25.
[0029] Furthermore, a groove is provided on the surface of the support base 11, and the annular exhaust pipe 24 and the horizontal guide pipe 25 are inserted into the groove provided in the support base 11, so as to realize the positioning function of the annular exhaust pipe 24 and the horizontal guide pipe 25 through the groove provided in the support base 11.
[0030] Furthermore, a through hole is provided on one side of the inner wall of the groove opened in the support base 11. One end of the air inlet pipe 23 passes through the through hole opened in the support base 11 and is inserted into the installation pipe 22. This allows the air inlet pipe 23 to guide the cold air supplied by the vortex fan 21 into the annular exhaust pipe 24 and the horizontal guide pipe 25 for diversion.
[0031] Furthermore, multiple sets of exhaust ports are provided on the inner surface of the annular exhaust pipe 24, and multiple sets of ventilation ports are provided on one side of the inner wall of the groove provided in the support base 11, so as to guide the cold air through the exhaust ports provided in the annular exhaust pipe 24 and the ventilation ports provided in the support base 11.
[0032] Furthermore, a limiting structure 3 is connected to the surface of the support base 11. The limiting structure 3 includes a fixing pile 31, an adjusting screw 32 is rotatably connected inside the fixing pile 31, one end of the adjusting screw 32 is connected to a limiting plate 33, a rubber pad 34 is provided on the inner surface of the limiting plate 33, and a cover 35 is abutted on the surface of the rubber pad 34, so that the groove opened in the support base 11 is closed by the cover 35, and the annular exhaust pipe 24 and the air guide horizontal pipe 25 are limited.
[0033] Furthermore, a sealing gasket is provided on one end of the cover 35. The end of the cover 35 with the sealing gasket is inserted into the groove of the support base 11 for filling and sealing. A threaded groove is provided on one end of the fixed pile 31. One end of the adjusting screw 32 is rotatably connected to the threaded groove of the fixed pile 31, so as to limit the position between the fixed pile 31 and the adjusting screw 32 through the thread, and control the position of the limiting plate 33 by the fixed pile 31.
[0034] Furthermore, a groove is provided on the inner surface of the limiting plate 33, and a rubber pad 34 is connected to one side of the inner wall of the groove of the limiting plate 33. The rubber pad 34 fills the space between the limiting plate 33 and the cover 35 for buffering, so as to achieve flexible contact between the limiting plate 33 and the cover 35 through the rubber pad 34, and to use the limiting plate 33 to limit the cover 35.
[0035] Working principle: When air cooling is performed on large-diameter thick-walled pipes, the vortex fan 21 is started to allow cold air from the outside to enter the installation pipe 22 through the vortex fan 21. The cold air is then guided by the air inlet pipe 23 to enter the annular exhaust pipe 24. The air is then diverted through the horizontal guide pipe 25 connected to one side of the annular exhaust pipe 24, so that the cold air is discharged from the exhaust port on the inner surface of the annular exhaust pipe 24 along the ventilation port on the support base 11 and enters the cold gap of the feed billet, thereby achieving the cooling and shaping effect of the pipe.
[0036] When limiting the movement of large-diameter, thick-walled pipes to prevent sag, the end of the cap 35 with a sealing gasket is inserted into the groove of the support base 11 for filling and sealing, thereby limiting the movement of the annular exhaust pipe 24. Then, the angle of the limiting plate 33 is rotated, causing the limiting plate 33 to move the adjusting screw 32 into the threaded groove of the fixing pile 31, so that the limiting plate 33 moves towards the surface of the cap 35, thereby filling the rubber gasket 34 between the limiting plate 33 and the cap 35 for buffering, allowing the two to make flexible contact, and using the limiting plate 33 to limit the movement of the cap 35, thus achieving the effect of sealing the groove of the support base 11 with the cap 35 and limiting the movement of the annular exhaust pipe 24 and the horizontal air guide pipe 25.
[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A large-diameter thick-wall pipe resistant to sagging, characterized by, Include: The device body (1) includes a support base (11), and the bottom end of the support base (11) is connected with an outer mold body (12); One side of the outer mold body (12) is provided with a air cooling mechanism (2), the air cooling mechanism (2) includes a vortex fan (21), one side of the vortex fan (21) is connected with a mounting pipe (22), the mounting pipe (22) is provided with an air inlet pipe (23) inside, one end of the air inlet pipe (23) is connected with a annular exhaust pipe (24), one side of the annular exhaust pipe (24) is connected with a air guide cross pipe (25).
2. The anti-hooping large-diameter thick-wall pipe according to claim 1, characterized in that: The surface of the support base (11) is provided with a groove, and the annular exhaust pipe (24) and the air guide cross pipe (25) are inserted into the groove of the support base (11).
3. The anti-hooping large diameter thick wall pipe according to claim 1, wherein: The inner wall of the groove of the support base (11) is provided with a through hole on one side, and one end of the air inlet pipe (23) is inserted into the mounting pipe (22) through the through hole of the support base (11).
4. The anti-hooping large diameter thick wall pipe of claim 1, wherein: The inner surface of the annular exhaust pipe (24) is provided with a plurality of exhaust ports, and the inner wall of the groove of the support base (11) is provided with a plurality of ventilation ports on one side.
5. The anti-hooping large diameter thick wall pipe of claim 1 wherein: The surface of the support base (11) is connected with a limiting structure (3), the limiting structure (3) includes a fixed pile (31), the fixed pile (31) is rotatably connected with an adjusting screw (32) inside, one end of the adjusting screw (32) is connected with a limiting plate (33), the inner surface of the limiting plate (33) is provided with a rubber pad (34), and the surface of the rubber pad (34) is combined with a cover (35).
6. The anti-hooping large diameter thick wall pipe according to claim 5, wherein: One end surface of the cover (35) is provided with a sealing pad, one end of the cover (35) provided with the sealing pad is inserted into the groove of the support base (11) for filling and sealing, one end surface of the fixed pile (31) is provided with a threaded groove, and one end of the adjusting screw (32) is rotatably connected in the threaded groove of the fixed pile (31).
7. The anti-hooping large diameter thick wall pipe of claim 5, wherein: The inner surface of the limiting plate (33) is provided with a groove, the rubber pad (34) is connected on one side of the inner wall of the groove of the limiting plate (33), and the rubber pad (34) is filled between the limiting plate (33) and the cover (35) for buffering.