CN219076487U

CN219076487U - Production extrusion equipment of polyethylene pipe

Info

Publication number: CN219076487U
Application number: CN202223156270.0U
Authority: CN
Inventors: 权少纪
Original assignee: Shaanxi Jintaiwang Pipe Technology Co ltd
Current assignee: Shaanxi Jintaiwang Pipe Technology Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-26
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses production extrusion equipment for polyethylene pipes, and relates to the field of pipe extrusion equipment. The utility model comprises an extruder and a mouth die arranged at the discharge end of the extruder, wherein the mouth die is communicated with sizing cooling equipment through an air cooling pipe, the outer diameter of a material extrusion cavity of the mouth die is the same as the inner diameter of the air cooling pipe, the inner diameter of the air cooling pipe is the same as the inner diameter of the feed end of the sizing cooling equipment, cold air blowing equipment is arranged below the air cooling pipe, and cold air blown out by the cold air blowing equipment is in heat conduction communication with the inner wall of the air cooling pipe; the problems that collapse is caused by the fact that materials move too long before entering sizing equipment and the sizing equipment is affected by high temperature of an extruder die are solved.

Description

Production extrusion equipment of polyethylene pipe

Technical Field

The utility model relates to the field of pipe extrusion equipment, in particular to production extrusion equipment for polyethylene pipes.

Background

Under the power drive of a screw extruder, the plastic pipe extrudes mixed, sheared and plasticized hot molten raw materials from an outlet part of an extrusion die through a screw charging barrel, and when the pipe is extruded out of the die, the plastic pipe also has quite high temperature and does not have enough strength and rigidity to bear dead weight and deformation.

For the pipe processing flow, after extrusion, the pipe needs to enter a sizing pipe for sizing operation. The material extruded from the extruder is high in temperature and insufficient in hardness, so that collapse is easy to occur before the material enters the sizing equipment, and certain softness is required to be achieved by the material for sizing operation, so that the extrusion equipment capable of being directly communicated with the sizing equipment is required, the situation that the material moves too long before entering the sizing equipment is avoided, the risk of collapsing of the material is increased, and the influence of the high temperature of the extruder die on the sizing equipment is avoided.

Disclosure of Invention

The utility model aims to provide extrusion equipment for producing polyethylene pipes, which solves the problems in the background art.

In order to solve the problems, the utility model adopts the following technical means:

the utility model provides a production extrusion equipment of polyethylene pipe, includes the extruder and locates the bush of extruder discharge end, the bush passes through air-cooled tube and sizing cooling device intercommunication, the external diameter of the material extrusion chamber of bush with the internal diameter of air-cooled tube is the same, the internal diameter of air-cooled tube with the feed end internal diameter of sizing cooling device is the same, the below of air-cooled tube is equipped with cold wind equipment of blowing, cold wind equipment of blowing with air-cooled tube inner wall heat conduction intercommunication.

Preferably, the air cooling pipe comprises a main pipe, two ends of the main pipe are respectively communicated with the feeding end of the die and the sizing cooling equipment, an annular air passing cavity is arranged in the side wall of the main pipe, an air outlet pipe and an air blowing pipe which are respectively communicated with the annular air passing cavity are arranged at the upper end and the lower end of the main pipe, and the air blowing pipe is communicated with the cold air blowing equipment.

Further, the sizing and cooling device comprises a vacuum box, a feeding sizing pipe and a discharging limiting pipe are respectively arranged at the horizontal two ends of the vacuum box, a plurality of water passing holes penetrating through the side wall are distributed on the side wall of the part of the feeding sizing pipe extending into the vacuum box, and a pipe wall cleaning mechanism is arranged between the feeding sizing pipe and the discharging limiting pipe;

the pipe wall cleaning mechanism comprises a horizontally arranged feeding pipe, one end of the feeding pipe facing the feeding sizing pipe is coaxially communicated with a cleaning pipe, the inner diameter of the cleaning pipe is identical to that of the feeding pipe, the outer diameter of the cleaning pipe is gradually reduced along the direction away from the feeding pipe, the inner diameter and the outer diameter of one end of the cleaning pipe away from the feeding pipe are identical to form a sharp slice structure, and the inner wall of the feeding pipe is covered with a frosted polishing layer;

the pipe wall cleaning mechanism, the feeding sizing pipe and the discharging limiting pipe are identical in inner diameter and coaxially arranged, and the spraying cooling mechanism is arranged in the vacuum box.

Furthermore, the outer wall of the material passing pipe is arranged on the inner wall of the vacuum box through the supporting frame, and the outer wall of the material passing pipe is in transmission connection with the rotating end of the rotating motor.

Still further, the support frame includes a pair of locating respectively the bearing housing of material pipe both ends outer wall, the bearing housing with material pipe coaxial arrangement, vertical bracing piece is installed respectively to the outer wall of bearing housing, the bracing piece with the inner wall connection of vacuum chamber.

Furthermore, the outer wall of the material passing pipe is coaxially provided with an embedded ring groove, the rotating end of the rotating motor is coaxially provided with a transmission disc, the transmission disc is coaxially matched with the material passing pipe, the outer edge of the transmission disc is embedded in the embedded ring groove, and the transmission disc is meshed with the embedded ring groove.

Still further, spray cooling mechanism includes the inlet tube, the inlet tube is followed outside the vacuum box stretches into in the vacuum box, just the inlet tube stretches into the sprinkler bead is installed to the part of vacuum box, the bottom surface of vacuum box still is equipped with out the basin, out basin and outside storage water tank intercommunication.

Further, the top surface of the vacuum box is communicated with an exhaust pipe, and the exhaust pipe is communicated with a vacuum pump.

Furthermore, the inner wall of the feeding end of the feeding sizing tube and the inner wall of the discharging end of the discharging limiting tube are covered and provided with a silica gel sealing sleeve.

The utility model has the following beneficial effects in the using process:

after the pipe material is extruded, the pipe material directly enters sizing cooling equipment after passing through an air cooling pipe through a die, in the process of passing through the air cooling pipe, cold air blown out by using cold air blowing equipment is used for cooling the air cooling pipe, and then the material in the air cooling pipe is used for preliminary cooling, so that the hardness of the material is slightly increased, collapse of the material is avoided, excessive cooling can be effectively avoided by using air cooling, and the hardness of the material is greatly increased to cause the occurrence of the condition that sizing cannot be performed.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.

The device comprises a 1-vacuum box, a 2-feeding sizing pipe, a 3-discharging limiting pipe, a 4-water passing hole, a 5-material passing pipe, a 6-cleaning pipe, a 7-rotating motor, an 8-bearing sleeve, a 9-supporting rod, a 10-embedded annular groove, an 11-driving disc, a 12-water inlet pipe, a 13-water spraying head, a 14-water outlet groove, a 15-exhaust pipe, a 16-silica gel sealing sleeve, a 17-extruder, an 18-die, a 19-air cooling pipe, a 191-main pipe, a 192-annular air passing cavity, a 20-air outlet pipe and a 21-air blowing pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, an extrusion device for producing polyethylene pipe comprises an extruder 17 and a die 18 arranged at the discharge end of the extruder 17, wherein the die 18 is communicated with a sizing cooling device through an air cooling pipe 19, the outer diameter of a material extrusion cavity of the die 18 is the same as the inner diameter of the air cooling pipe 19, the inner diameter of the air cooling pipe 19 is the same as the inner diameter of the feed end of the sizing cooling device, a cold air blowing device is arranged below the air cooling pipe 19, and cold air blown out by the cold air blowing device is in heat conduction communication with the inner wall of the air cooling pipe 19.

Like this, after the tubular product material extrudes, directly get into sizing cooling device after extruding through air-cooled tube 19 from bush 18, in the in-process through air-cooled tube 19, utilize cold wind that cold wind air-blowing equipment bloated, cool off air-cooled tube 19, and then utilize the cold air to carry out preliminary cooling to the material in the air-cooled tube 19, slightly increase the hardness of material, in order to avoid the material to appear collapsing, but also utilize the air cooling can effectually avoid excessive cooling, and cause the material hardness to increase by a wide margin and cause the condition that can't the sizing to appear.

Further, the air cooling pipe 19 includes a main pipe 191 with two ends respectively connected to the die 18 and the feeding end of the sizing cooling device, an annular air passing cavity 192 is disposed in the side wall of the main pipe 191, the upper and lower ends of the main pipe 191 are respectively provided with an air outlet pipe 20 and an air blowing pipe 21 which are respectively connected to the annular air passing cavity 192, and the air blowing pipe 21 is connected to the cold air blowing device.

Thus, on the one hand, when the annular air passing cavity 192 is utilized to cool the materials in the main pipeline 191, the materials can be gathered more, and the cooling effect is prevented from being influenced by diffusion. On the other hand, by utilizing the air blowing from bottom to top, the bottom surface of the material can be cooled at first, so that the situation that the material collapses is further avoided.

For the sizing cooling equipment, the sizing cooling equipment comprises a vacuum box 1, wherein a feeding sizing pipe 2 and a discharging limiting pipe 3 are respectively arranged at the horizontal two ends of the vacuum box 1, a plurality of water passing holes 4 penetrating through the side wall are distributed on the side wall of the part of the feeding sizing pipe 2 extending into the vacuum box 1, and a pipe wall cleaning mechanism is further arranged between the feeding sizing pipe 2 and the discharging limiting pipe 3;

the pipe wall cleaning mechanism comprises a horizontally arranged material passing pipe 5, one end of the material passing pipe 5, which faces the feeding sizing pipe 2, is coaxially communicated with a cleaning pipe 6, the inner diameter of the cleaning pipe 6 is the same as that of the material passing pipe 5, the outer diameter of the cleaning pipe 6 is gradually reduced along the direction away from the material passing pipe 5, the inner diameter and the outer diameter of one end of the cleaning pipe 6, which is away from the material passing pipe 5, are the same to form a sharp slice structure, and the inner wall of the material passing pipe 5 is covered with a frosted polishing layer;

the pipe wall cleaning mechanism, the feeding sizing pipe 2 and the discharging limiting pipe 3 are identical in inner diameter and coaxially arranged, and the vacuum box 1 is internally provided with a spray cooling mechanism.

Like this, in the tubular product that extrudes from extruder 17 gets into the sizing pipe, in the environment of vacuum box 1 pair, the inner wall of sizing pipe is hugged closely to the outer wall of tubular product, and utilize water hole 4 on the sizing pipe, can let the cooling water that spouts in the spray cooling mechanism act on the outer wall of the intraductal material of sizing through water hole 4, thereby cool off the material, make it possess certain hardness, accomplish the sizing, then the material is after shifting out the sizing pipe, can be better contact with the cooling water that sprays cooling mechanism spun, and then carry out secondary cooling, let the hardness of material pipe further increase back, do not have the way can get into pipe wall cleaning mechanism, specifically pass clean pipe 6 earlier before getting into passing pipe 5, clean pipe 6's tip section mechanism can cut the material pipe outer wall after hardening, so to the part that is greater than clean pipe 6 internal diameter's of material outer wall is cut down, accomplish the material outer wall because the sizing pipe and form concave-convex structure, when the material passes through pipe 5 in, can also pass through the material pipe 5 and pass through the smooth material of the smooth and remove the smooth material layer under the effect of passing pipe 5, the smooth material of the further stretches out from the clean pipe is more completely, the mechanism is finished. After the material passes through the pipe wall cleaning mechanism, the material can be contacted with cooling water sprayed by the spray cooling mechanism, so that more thorough cooling can be performed on one hand, and on the other hand, the sprayed cooling water can be used for flushing and cleaning the outer wall of the pipe, so that residues remained on the outer side of the pipe wall after the pipe passes through the pipe wall cleaning mechanism are cleaned. Finally, the common material is removed from the vacuum box 1 from the discharging limiting pipe 3.

Preferably, the outer wall of the material passing pipe 5 is mounted on the inner wall of the vacuum box 1 through a supporting frame, and the outer wall of the material passing pipe 5 is in transmission connection with the rotating end of the rotating motor 7.

Like this, when tubular product passes the clean mechanism of pipe wall, let the material passing pipe 5 rotate, utilize the rotation of material passing pipe 5 along its axis on the one hand, let it carry out better polishing to the tubular product outer wall, on the other hand, can also utilize the rotation of material passing pipe 5 along its axis, let clean pipe 6 can carry out better cutting operation to the protruding structure of tubular product outer wall. Can make the cutting action of the slice structure on the cleaning pipe 6 on the outer wall of the pipe more efficient.

Specifically, the support frame includes a pair of bearing housing 8 that locate respectively the outer wall of material pipe 5 both ends, bearing housing 8 with material pipe 5 coaxial setting, vertical bracing piece 9 is installed respectively to the outer wall of bearing housing 8, bracing piece 9 with the inner wall connection of vacuum chamber 1.

Then, inlay annular 10 is coaxial to the outer wall of passing material pipe 5, the rotation end coaxial mounting of rotation motor 7 has driving disk 11, driving disk 11 with passing material pipe 5 coaxial adaptation, the outer fringe of driving disk 11 is inlayed and is located inlay annular 10, driving disk 11 with inlay annular 10 meshing setting.

In addition, spray cooling mechanism includes inlet tube 12, inlet tube 12 stretches into from outside the vacuum box 1 in the vacuum box 1, just inlet tube 12 stretches into the part of vacuum box 1 installs sprinkler bead 13, the bottom surface of vacuum box 1 still is equipped with out basin 14, out basin 14 and outside storage water tank intercommunication.

Meanwhile, the top surface of the vacuum box 1 is communicated with an exhaust pipe 15, and the exhaust pipe 15 is communicated with a vacuum pump.

The inner wall of the feeding end of the feeding sizing tube 2 and the inner wall of the discharging end of the discharging limiting tube 3 are covered and provided with a silica gel sealing sleeve 16.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a production extrusion equipment of polyethylene pipe, includes extruder (17) and locates bush (18) of extruder (17) discharge end, its characterized in that: the sizing cooling device is characterized in that the die (18) is communicated with sizing cooling equipment through an air cooling pipe (19), the outer diameter of a material extrusion cavity of the die (18) is the same as the inner diameter of the air cooling pipe (19), the inner diameter of the air cooling pipe (19) is the same as the inner diameter of a feeding end of the sizing cooling equipment, cold air blowing equipment is arranged below the air cooling pipe (19), and cold air blown out by the cold air blowing equipment is in heat conduction communication with the inner wall of the air cooling pipe (19).

2. The polyethylene pipe production extrusion apparatus of claim 1, wherein: the air cooling pipe (19) comprises a main pipe (191) with two ends respectively communicated with the die (18) and the feeding end of the sizing cooling equipment, an annular air passing cavity (192) is formed in the side wall of the main pipe (191), an air outlet pipe (20) and an air blowing pipe (21) which are communicated with the annular air passing cavity (192) are respectively arranged at the upper end and the lower end of the main pipe (191), and the air blowing pipe (21) is communicated with the cold air blowing equipment.

3. The polyethylene pipe production extrusion apparatus of claim 1, wherein: the sizing and cooling equipment comprises a vacuum box (1), wherein a feeding sizing pipe (2) and a discharging limiting pipe (3) are respectively arranged at the horizontal two ends of the vacuum box (1), a plurality of water passing holes (4) penetrating through the side wall are distributed on the side wall of the part, extending into the vacuum box (1), of the feeding sizing pipe (2), and a pipe wall cleaning mechanism is further arranged between the feeding sizing pipe (2) and the discharging limiting pipe (3);

the pipe wall cleaning mechanism comprises a horizontally arranged material passing pipe (5), one end of the material passing pipe (5) facing the feeding sizing pipe (2) is coaxially communicated with a cleaning pipe (6), the inner diameter of the cleaning pipe (6) is identical to that of the material passing pipe (5), the outer diameter of the cleaning pipe (6) is gradually reduced along the direction away from the material passing pipe (5), the inner diameter and the outer diameter of one end of the cleaning pipe (6) away from the material passing pipe (5) are identical to form a sharp slice structure, and the inner wall of the material passing pipe (5) is covered with a frosted polishing layer;

the pipe wall cleaning mechanism, the feeding sizing pipe (2) and the discharging limiting pipe (3) are identical in inner diameter and coaxially arranged, and the spray cooling mechanism is arranged in the vacuum box (1).

4. A polyethylene pipe production extrusion apparatus according to claim 3, wherein: the outer wall of the material passing pipe (5) is arranged on the inner wall of the vacuum box (1) through a supporting frame, and the outer wall of the material passing pipe (5) is in transmission connection with the rotating end of the rotating motor (7).

5. The polyethylene pipe production extrusion apparatus as claimed in claim 4, wherein: the support frame includes a pair of bearing housing (8) of locating respectively pass material pipe (5) both ends outer wall, bearing housing (8) with pass material pipe (5) coaxial setting, vertical bracing piece (9) are installed respectively to the outer wall of bearing housing (8), bracing piece (9) with the inner wall connection of vacuum chamber (1).

6. The polyethylene pipe production extrusion apparatus as claimed in claim 4 or 5, wherein: the outer wall of the material passing pipe (5) is coaxially provided with an embedded annular groove (10), the rotating end of the rotating motor (7) is coaxially provided with a transmission disc (11), the transmission disc (11) is coaxially matched with the material passing pipe (5), the outer edge of the transmission disc (11) is embedded in the embedded annular groove (10), and the transmission disc (11) is meshed with the embedded annular groove (10).

7. A polyethylene pipe production extrusion apparatus according to claim 3, wherein: the spray cooling mechanism comprises a water inlet pipe (12), the water inlet pipe (12) extends into the vacuum box (1) from the outside of the vacuum box (1), a water spraying head (13) is arranged on the part, extending into the vacuum box (1), of the water inlet pipe (12), a water outlet groove (14) is further formed in the bottom surface of the vacuum box (1), and the water outlet groove (14) is communicated with an external water storage tank.

8. A polyethylene pipe production extrusion apparatus according to claim 3, wherein: the top surface of vacuum chamber (1) communicates there is exhaust tube (15), exhaust tube (15) and vacuum pump intercommunication.

9. A polyethylene pipe production extrusion apparatus according to claim 3, wherein: the inner wall of the feeding end of the feeding sizing pipe (2) and the inner wall of the discharging end of the discharging limiting pipe (3) are covered and provided with a silica gel sealing sleeve (16).