CN113471903B

CN113471903B - CPVC composite protection pipe and extrusion equipment thereof

Info

Publication number: CN113471903B
Application number: CN202110658277.3A
Authority: CN
Inventors: 姚艳芳; 舒峰; 王祖林; 张世兵
Original assignee: Anhui Yufa Plastic Industry Co ltd
Current assignee: Anhui Yufa Plastic Industry Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2023-03-28
Anticipated expiration: 2041-06-15
Also published as: CN113471903A

Abstract

The invention discloses a CPVC composite protection pipe and extrusion equipment thereof, relating to the technical field of cable protection pipes; in order to solve the problem that the protective tube is easy to damage; the protection tube comprises a tube body, wherein the tube body comprises a shell, and one end of the tube body is provided with a cable hole; the two ends of the pipe body are respectively fixedly connected with a connecting port, the outer wall of one side of the connecting port is rotatably connected with a rotating ring, and the outer wall of the opposite side of the two rotating rings is fixedly connected with the same reinforcing structure; the reinforced structure is composed of a plurality of connecting plates and a plurality of adjusting plate groups, the connecting plates are connected with the adjusting plate groups through hinges, and the connecting plates and the adjusting plate groups are arranged at intervals. The extrusion equipment of the protection tube comprises a base, wherein a material extruding machine is fixedly connected with the outer wall of the top of the base, a material barrel is fixedly connected with the outer wall of the top of the material extruding machine, and a supporting seat is arranged on the outer wall of the circumference of the material barrel. The invention slows down the external impact force, prevents the pipe body from deforming under stress, and prolongs the service life of the pipe body and the cable.

Description

CPVC composite protection pipe and extrusion equipment thereof

Technical Field

The invention relates to the technical field of cable protection pipes, in particular to a CPVC (chlorinated polyvinyl chloride) composite protection pipe and extrusion equipment thereof.

Background

With the rapid development of national economy, city construction is updated day by day, and power cables are arranged from the overhead to the underground. The CPVC cable protection pipe has the characteristics of high strength, good flexibility, high temperature resistance, high pressure resistance, corrosion resistance, flame retardance, good insulating property, no pollution, difficult aging, light weight and the like, and can also prevent the influence of thermal expansion and cold contraction. By adopting flaring and socket joint, the outer side of the pipe does not need to be reinforced by other materials during construction, so that the construction section by section is realized, the labor is saved, and the construction is convenient and quick. The CPVC cable protection pipe replaces the defects of poor rigidity of a traditional UPVC double-wall corrugated pipe ring and poor heat resistance and flame retardance of a PE plastic pipe, and is an inevitable trend for future development. Current CPVC cable protection pipe is when suffering the heavy object collision, breaks easily, causes inside cable to expose, and the firmness is not enough, can not protect the cable effectively.

For solving above-mentioned problem, through the retrieval, chinese patent application number is CN 201510106922.5's patent discloses a cable protection pipe, including inlayer pipe and outer pipe, inlayer outside of tubes wall is provided with first metal level, outer inside of tubes wall is provided with the second metal level, first metal level outer wall is provided with the first insulation layer, second metal level inner wall is provided with the second insulation layer, be provided with the flame retardant coating between first insulation layer and the second insulation layer. The cable protection tube in the above patent has the following disadvantages: although the metal layer is provided, the cable still deforms or even cracks under certain pressure, so that the cable inside the cable is damaged.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a CPVC composite protection pipe and extrusion equipment thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the CPVC composite protection pipe comprises a pipe body, wherein the pipe body comprises a shell, and one end of the pipe body is provided with a cable hole; the two ends of the pipe body are respectively fixedly connected with a connecting port, the outer wall of one side of the connecting port is rotatably connected with a rotating ring, and the outer wall of the opposite side of the two rotating rings is fixedly connected with the same reinforcing structure; the reinforcing structure is composed of a plurality of connecting plates and a plurality of adjusting plate groups, the connecting plates are connected with the adjusting plate groups through hinges, the connecting plates and the adjusting plate groups are arranged at intervals, the number of the connecting plates is one less than that of the adjusting plate groups, the outer walls of the adjusting plate groups are fixedly connected with convex blocks, and the circumferential inner walls of the connecting plates are fixedly connected with a plurality of abutting blocks; the outer wall of casing is provided with the coating, and the circumference inner wall of casing is provided with the elasticity extrusion layer, and the inner wall of elasticity extrusion layer is provided with the isolation layer, and the inner wall of isolation layer and the outer wall in cable hole are provided with same interior inoxidizing coating.

Preferably: the manufacturing of the shell is realized by using extrusion equipment, wherein the extrusion equipment comprises a base, the outer wall of the top of the base is fixedly connected with an extrusion machine, the outer wall of the top of the extrusion machine is fixedly connected with a material barrel, the outer wall of the circumference of the material barrel is provided with a supporting seat, and the outer wall of the bottom of the supporting seat is fixedly connected with the outer wall of the top of the extrusion machine; the top outer wall fixedly connected with design room of base, one side outer wall fixedly connected with same mould cavity of one side outer wall of design room and the crowded material machine.

Preferably: the outer wall fixedly connected with cooling hole of one side that the design room is close to the mould chamber, the inner wall of cooling hole is provided with a plurality of fumaroles, and the outer wall of cooling hole is connected with the output of air pump through the pipe, and the bottom outer wall fixed connection of air pump is in the top outer wall of design room, and the input of air pump is provided with the filtration lid.

Preferably: the utility model discloses a setting room, including the setting room, the extension end fixedly connected with clamp plate of the first flexible subassembly of top outer wall fixedly connected with support, the flexible subassembly of the bottom outer wall fixedly connected with of support, the bottom outer wall fixedly connected with two guide bars of clamp plate, the guide bar forms sliding fit with the top outer wall of setting room, the equal fixedly connected with elasticity in bottom of two guide bars props up the piece, the bottom outer wall fixedly connected with cooling drum of elasticity props up the piece, cooling drum is waist shape.

Preferably: the inner wall of the bottom of the shaping chamber below the two cooling rollers is fixedly connected with a fixed seat, the inner wall of one side of the fixed seat is provided with a plurality of cooling roller assemblies, each cooling roller assembly is composed of a rubber bag wrapping cylinder, and cooling liquid is arranged inside each cooling roller and the rubber bag.

Preferably: the top outer wall of the fixing seat close to each cooling roller assembly is fixedly connected with a buffer piece, and the top end of the buffer piece is fixedly connected with a supporting plate.

Preferably: the top inner wall fixedly connected with of design room flexible subassembly two, the extension end fixedly connected with mount pad of flexible subassembly two, the bottom inner wall fixedly connected with motor of mount pad, one side outer wall of mount pad is provided with the straight subassembly of bridge, the straight subassembly of bridge comprises two rolling wheels and the straight conveyer belt of bridge, and the output of motor is connected with the input of one of them rolling wheel through the connecting axle, and the straight conveyer belt of bridge constitutes for a plurality of kidney-shaped cylinders.

Preferably: and the inner wall of the bottom of the shaping chamber below the bridge straight component is fixedly connected with a top support group.

Preferably: the bottom outer wall fixedly connected with support frame of base, the top outer wall of base are provided with a plurality of recesses, and the top outer wall of base is provided with the transfer roller, the bottom inner wall of design room is the filter screen form, and one side outer wall of base is provided with the chamber door, and one side outer wall of base is provided with the collecting chamber, and the bottom inner wall of collecting chamber is the slope form.

The beneficial effects of the invention are as follows:

1. according to the invention, the connecting ports provided with the connecting plates and the adjusting plate groups are sleeved on the outer wall of the pipe body, the abutting blocks are attached to the outer wall of the pipe body, then the two connecting ports are stretched outwards according to the length of the pipe body and are abutted against and fixed at two ends of the pipe body, the installation is flexible, the outer wall of the pipe body is protected in all directions by matching the reinforcing structure with the coating layer, and the abutting blocks are matched to isolate the pipe body in a certain space, when a foreign object impacts the pipe body, the reinforcing structure is stressed and rotates at a certain angle, so that the external impact force is relieved, the pipe body is prevented from being stressed and deformed, and the service life of the pipe body and the service life of the cable are prolonged.

2. The molded shell enters the cooling port on the molding chamber, the air pump is started to pump the external filtered clean air and the air is sprayed out through the air spraying holes, so that the produced shell is cooled in all directions at the first time, and the shell is prevented from deforming due to high temperature and affecting the production quality.

3. When the shell subjected to primary cooling is pushed above the fixed seat and below the cooling roller, the outer wall of the shell is in contact with the cooling roller and the cooling roller assembly, so that the shell is further cooled during conveying, the buffer piece prevents the cooling roller assembly from being bent due to the weight of the shell, and the cooling effect of the shell is ensured.

4. According to the invention, the height position of the bridge straight assembly is adjusted, so that the bridge straight conveyor belt can be attached to the outer wall of the shell, the shell enters between the bridge straight assembly and the top support group after being cooled, the motor is started to drive the bridge straight assembly to convey, and the bridge straight assembly is bridged and straightened by the waist-shaped roller during the passive outgoing period of the shell, so that the pipe is always straight, and the outgoing quality of the pipe body at the later stage is ensured.

5. Waste materials generated during production fall into the material collecting chamber through the groove and the bottom surface of the shaping chamber, and the box door is opened for treatment at a later stage, so that the phenomenon that the waste materials are accumulated on the top of the equipment for a long time or fall on the ground to cause environmental pollution is avoided.

Drawings

Fig. 1 is a schematic overall structural diagram of a CPVC composite protection tube according to the present invention;

fig. 2 is a schematic structural diagram of a front cross-sectional view of a CPVC composite protection tube according to the present invention;

FIG. 3 is a schematic left-side sectional view of an extrusion apparatus according to the present invention;

FIG. 4 is a schematic diagram of a right-side view of an extrusion apparatus according to the present invention;

FIG. 5 is a schematic view of a fixing seat of the extruding apparatus according to the present invention;

fig. 6 is an enlarged schematic structural view of a portion a of the extrusion apparatus according to the present invention.

In the figure: the device comprises a pipe body 1, a connecting port 2, a rotating ring 3, a connecting plate 4, an adjusting plate group 5, a shell 6, a coating layer 7, an elastic extrusion layer 8, an isolation layer 9, an inner protection layer 10, a cable hole 11, a butting block 12, a base 20, an extruder 21, a material barrel 22, a bracket 23, a telescopic assembly I24, a pressing plate 25, a telescopic assembly II 26, a bridge straight assembly 27, a mounting seat 28, a jacking group 29, a material collecting chamber 30, a fixing seat 31, a cooling port 32, an air jet hole 33, a supporting frame 34, a conveying roller 35, a groove 36, a box door 37, a sizing chamber 38, an air pump 39, a supporting seat 40, a buffering member 41, a cooling roller assembly 42, a guide rod 43, an elastic supporting member 44 and a cooling roller 45.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientations and positional relationships shown in the figures, and are used for convenience in describing the patent and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a CPVC composite protection pipe, as shown in fig. 1 and 2, comprising a pipe body 1, wherein the pipe body 1 comprises a shell 6, and one end of the pipe body 1 is provided with a cable hole 11; the two ends of the pipe body 1 are respectively fixed with a connecting port 2 through bolts, the outer wall of one side of the connecting port 2 is rotatably connected with a rotating ring 3, and the outer wall of the opposite side of the two rotating rings 3 is fixedly connected with the same reinforcing structure; the reinforced structure consists of a plurality of connecting plates 4 and a plurality of adjusting plate groups 5, wherein the connecting plates 4 are connected with the adjusting plate groups 5 through hinges, the number of the connecting plates 4 and the adjusting plate groups 5 which are arranged at intervals is less than that of the adjusting plate groups 5 by one, the outer walls of the adjusting plate groups 5 are welded with convex blocks, and the circumferential inner walls of the connecting plates 4 are welded with a plurality of butting blocks 12; the outer wall of casing 6 has scribbled coat 7, and the circumference inner wall of casing 6 bonds elasticity extrusion layer 8, and the inner wall of elasticity extrusion layer 8 bonds and has isolation layer 9, and the same interior inoxidizing coating 10 of the inner wall of isolation layer 9 and the outer wall bonding of cable hole 11. During installation, the connecting ports 2 provided with the connecting plates 4 and the adjusting plate groups 5 are sleeved on the outer wall of the pipe body 1, the abutting blocks 12 are attached to the outer wall of the pipe body, and then the two connecting ports 2 are stretched outwards according to the length of the pipe body to abut against and fix the two ends of the pipe body 1. Carry out all-round protection to the outer wall of body 1 through reinforced structure cooperation coating 7 to cooperation butt joint piece 12 does certain space to body 1 and keeps apart, and when the foreign object struck to body 1, the passive certain angle of rotation of reinforced structure atress to slow down the outside impulsive force that receives, prevent body 1 atress deformation, the life of extension body 1 and cable. The cable is further protected by arranging the isolation layer 9, the inner protection layer 10 and the like, and the elastic extrusion layer 8 is matched, so that the stability of the cable in the pipe body 1 is improved conveniently.

When the installation of this embodiment, will install connecting plate 4 and adjusting plate group 5's connection port 2 cover at the outer wall of body 1, butt joint piece 12 laminating body's outer wall this moment, then according to the length of body, two connection port 2 of outside tensile make it to support at the both ends of body 1 and fix. Carry out all-round protection to the outer wall of body 1 through reinforced structure cooperation coating 7 to cooperation butt joint piece 12 does certain space to body 1 and keeps apart, and when the foreign object struck to body 1, the passive certain angle of rotation of reinforced structure atress to slow down the outside impulsive force that receives, prevent body 1 atress deformation, the life of extension body 1 and cable. Further protection is made to the cable through setting up isolation layer 9 and interior inoxidizing coating 10 etc. and the cooperation elasticity extrusion layer 8 is convenient for improve the stability of cable in body 1.

Example 2:

a CPVC composite protection pipe, as shown in fig. 3-6, for cooling a just-produced shell 6; the manufacturing of the shell 6 is realized by using extrusion equipment, the extrusion equipment comprises a base 20, the outer wall of the top of the base 20 is fixed with an extruder 21 through a bolt, the outer wall of the top of the extruder 21 is fixed with a material barrel 22 through a bolt, the circumferential outer wall of the material barrel 22 is sleeved with a supporting seat 40, and the outer wall of the bottom of the supporting seat 40 is fixed on the outer wall of the top of the extruder 21 through a bolt; the top outer wall of base 20 has design chamber 38 through the bolt fastening, one side outer wall of design chamber 38 and one side outer wall of extruder 21 have same mould chamber through the bolt fastening, one side outer wall that design chamber 38 is close to the mould chamber has cooling hole 32 through the bolt fastening, a plurality of fumaroles 33 have been seted up to cooling hole 32's inner wall, cooling hole 32's outer wall is connected with the output of air pump 39 through the pipe, the bottom outer wall of air pump 39 passes through the bolt fastening in design chamber 38's top outer wall, and there is the filter lid input of air pump 39 through threaded connection. Add the material to material section of thick bamboo 22 in, during the use, start extruder 21 extrusion material and get into the mould intracavity moulding, in the cooling hole 32 on moulding room 38 was got into to moulding shell 6, start air pump 39 and pump outside clean gas of filtration and spout through fumarole 33, make it the very first time carry out all-round cooling to the shell 6 of production, avoid shell 6 to lead to taking place deformation because of the high temperature, influence production quality.

In order to further cool the just produced housing 6; the outer wall of the top of the shaping chamber 38 is fixed with a support 23 through a bolt, the outer wall of the bottom of the support 23 is fixed with a first telescopic assembly 24 through a bolt, the extending end of the first telescopic assembly 24 is fixed with a pressing plate 25 through a bolt, the outer wall of the bottom of the pressing plate 25 is fixed with two guide rods 43 through bolts, the guide rods 43 and the outer wall of the top of the shaping chamber 38 form sliding fit, elastic support pieces 44 are welded at the bottom ends of the two guide rods 43, a cooling roller 45 is fixed on the outer wall of the bottom of each elastic support piece 44 through a bolt, and the cooling roller 45 is waist-shaped; the inner wall of the bottom of the shaping chamber 38, which is located below the two cooling rollers 45, is fixed with a fixed seat 31 through bolts, the inner wall of one side of the fixed seat 31 is rotatably connected with a plurality of cooling roller assemblies 42 through a rotating shaft, each cooling roller assembly 42 is composed of a rubber bag wrapping cylinder, the cooling rollers 45 and the rubber bag are filled with cooling liquid, the outer wall of the top, which is close to each cooling roller assembly 42, of the fixed seat 31 is fixed with a buffer 41 through bolts, and the top end of the buffer 41 is fixed with a supporting plate through bolts. According to the diameter of the produced pipe body 1, the first telescopic assembly 24 is started to adjust the height position of the cooling roller 45 through the pressure plate 25 and the guide rod 43. When the housing 6 subjected to preliminary cooling is pushed above the fixing seat 31 and below the cooling roller 45, the outer wall of the housing 6 contacts with the cooling roller 45 and the cooling roller assembly 42, so that further cooling is performed during conveying, the buffer 41 prevents the cooling roller assembly 42 from being bent due to the weight of the housing 6, and the cooling effect of the housing 6 is ensured.

To facilitate bridging the straight housing 6; a second telescopic assembly 26 is fixed on the inner wall of the top of the shaping chamber 38 through a bolt, an installation seat 28 is fixed at the extending end of the second telescopic assembly 26 through a bolt, a motor is fixed on the inner wall of the bottom of the installation seat 28 through a bolt, a straight bridge assembly 27 is rotatably connected to the outer wall of one side of the installation seat 28 through a rotating shaft, the straight bridge assembly 27 consists of two rolling wheels and a straight bridge conveying belt, the output end of the motor is connected with the input end of one of the rolling wheels through a connecting shaft, and the straight bridge conveying belt consists of a plurality of kidney-shaped rollers; the top support group 29 is fixed on the bottom inner wall of the sizing chamber 38 below the bridge straight component 27 through bolts. The height position of the straight subassembly 27 of bridge is adjusted to two 26 adjustment of start-up flexible subassemblies for the straight conveyer belt of bridge can laminate the outer wall of casing 6, gets into between the straight subassembly 27 of bridge and the shore group 29 after casing 6 cools down, and starter motor drives the straight subassembly 27 of bridge and carries, and during casing 6 spreads passively, makes the bridge through the kidney cylinder and straightens it, in order to guarantee the outgoing quality of later stage body 1.

To facilitate the collection of waste material; a support frame 34 is fixed on the outer wall of the bottom of the base 20 through bolts, a plurality of grooves 36 are formed in the outer wall of the top of the base 20, and a conveying roller 35 is rotatably connected to the outer wall of the top of the base 20 through a rotating shaft; the inner wall of the bottom of the shaping chamber 38 is in a filter screen shape, the outer wall of one side of the base 20 is connected with a box door 37 through a hinge, the outer wall of one side of the base 20 is provided with a material collecting chamber 30, and the inner wall of the bottom of the material collecting chamber 30 is in an inclined shape. The shaped and aligned housing 6 is transported from the outlet of the shaping chamber 38 to the top of the base 20 and guided out by the transport rollers 35. Waste materials generated during production fall into the collecting chamber 30 through the groove 36 and the bottom surface of the shaping chamber 38, and the box door 37 is opened for treatment at the later stage, so that the waste materials are prevented from being accumulated on the top of the equipment or falling on the ground for a long time.

This embodiment is before using, adds the material to the material section of thick bamboo 22 in, according to the body 1 diameter of production, starts the height position that telescopic component 24 passes through clamp plate 25 and guide bar 43 adjustment cooling drum 45, starts the height position that telescopic component two 26 adjustment bridge directly organized 27 for the outer wall that the straight conveyer belt of bridge can laminate casing 6. During the use, start extruder 21 and extrude the material and get into the moulding intracavity and shape, in the cooling hole 32 on the design room 38 was got into to the good casing 6 of moulding, start air pump 39 pump send outside clean gas of filtration and spout through fumarole 33, make it carry out all-round cooling to the casing 6 of production the very first time. When the housing 6 subjected to preliminary cooling is pushed above the fixing seat 31 and below the cooling roller 45, the outer wall of the housing 6 contacts with the cooling roller 45 and the cooling roller assembly 42, so that further cooling is performed during conveying, the buffer 41 prevents the cooling roller assembly 42 from being bent due to the weight of the housing 6, and the cooling effect of the housing 6 is ensured. After the casing 6 is cooled, the bridge-shaped straight component 27 and the top support component 29 are entered, the starting motor drives the bridge-shaped straight component 27 to convey, and during the period that the casing 6 is passively conveyed out, the bridge-shaped straight component is made through the waist-shaped roller, so that the factory-leaving quality of the pipe body 1 in the later period is ensured. The shaped and aligned housing 6 is transported from the outlet of the shaping chamber 38 to the top of the base 20 and guided out by the transport rollers 35. The waste material produced during the production process falls into the collecting chamber 30 through the bottom surface of the groove 36 and the shaping chamber 38, and the door 37 is opened for processing at the later stage.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The CPVC composite protection pipe comprises a pipe body (1), and is characterized in that the pipe body (1) comprises a shell (6), and one end of the pipe body (1) is provided with a cable hole (11); the two ends of the pipe body (1) are respectively fixedly connected with a connecting port (2), the outer wall of one side of each connecting port (2) is rotatably connected with a rotating ring (3), and the outer wall of the opposite side of each rotating ring (3) is fixedly connected with the same reinforcing structure; the reinforced structure is composed of a plurality of connecting plates (4) and a plurality of adjusting plate groups (5), the connecting plates (4) are connected with the adjusting plate groups (5) through hinges, the connecting plates (4) and the adjusting plate groups (5) are arranged at intervals, the number of the connecting plates (4) is one less than that of the adjusting plate groups (5), the outer walls of the adjusting plate groups (5) are fixedly connected with lugs, and the circumferential inner walls of the connecting plates (4) are fixedly connected with a plurality of abutting blocks (12); the outer wall of casing (6) is provided with coat (7), and the circumference inner wall of casing (6) is provided with elastic extrusion layer (8), and the inner wall of elastic extrusion layer (8) is provided with isolation layer (9), and the inner wall of isolation layer (9) and the outer wall of cable hole (11) are provided with same interior inoxidizing coating (10).

2. A CPVC composite protection tube according to claim 1, characterized in that the manufacturing of the casing (6) is implemented by using an extrusion device, the extrusion device comprises a base (20), the outer wall of the top of the base (20) is fixedly connected with an extruder (21), the outer wall of the top of the extruder (21) is fixedly connected with a material cylinder (22), the outer wall of the circumference of the material cylinder (22) is provided with a supporting seat (40), and the outer wall of the bottom of the supporting seat (40) is fixedly connected with the outer wall of the top of the extruder (21); the outer wall of the top of the base (20) is fixedly connected with a shaping chamber (38), and the outer wall of one side of the shaping chamber (38) and the outer wall of one side of the extruder (21) are fixedly connected with the same die cavity.

3. A CPVC composite protection tube according to claim 2, characterized in that the outer wall of the shaping chamber (38) near the mold cavity is fixedly connected with a cooling port (32), the inner wall of the cooling port (32) is provided with a plurality of air injection holes (33), the outer wall of the cooling port (32) is connected with the output end of an air pump (39) through a conduit, the outer wall of the bottom of the air pump (39) is fixedly connected with the outer wall of the top of the shaping chamber (38), and the input end of the air pump (39) is provided with a filter cover.

4. A CPVC composite protection tube according to claim 3, characterized in that the top outer wall of the shaping chamber (38) is fixedly connected with a support (23), the bottom outer wall of the support (23) is fixedly connected with a first telescopic assembly (24), the extending end of the first telescopic assembly (24) is fixedly connected with a pressing plate (25), the bottom outer wall of the pressing plate (25) is fixedly connected with two guide rods (43), the guide rods (43) and the top outer wall of the shaping chamber (38) form a sliding fit, the bottom ends of the two guide rods (43) are both fixedly connected with an elastic support member (44), the bottom outer wall of the elastic support member (44) is fixedly connected with a cooling roller (45), and the cooling roller (45) is waist-shaped.

5. A CPVC composite protection tube according to claim 4, characterized in that the fixing seat (31) is fixedly connected to the inner wall of the bottom of said shaping chamber (38) below two cooling rollers (45), a plurality of cooling roller assemblies (42) are arranged on the inner wall of one side of the fixing seat (31), each cooling roller assembly (42) is composed of a rubber bag wrapping cylinder, and the cooling rollers (45) and the rubber bag are internally provided with cooling liquid.

6. A CPVC composite protection tube as claimed in claim 5, wherein a buffer member (41) is fixedly connected to the outer wall of said fixing seat (31) near the top of each cooling roller assembly (42), and a supporting plate is fixedly connected to the top end of said buffer member (41).

7. A CPVC composite protection tube according to claim 2, characterized in that the top inner wall of said shaping chamber (38) is fixedly connected with a second telescopic assembly (26), the extension end of said second telescopic assembly (26) is fixedly connected with a mounting seat (28), the bottom inner wall of said mounting seat (28) is fixedly connected with a motor, the outer wall of one side of said mounting seat (28) is provided with a straight bridge assembly (27), said straight bridge assembly (27) is composed of two rolling wheels and a straight bridge conveying belt, the output end of said motor is connected with the input end of one of said rolling wheels through a connecting shaft, and said straight bridge conveying belt is composed of a plurality of kidney-shaped rollers.

8. A CPVC composite protection pipe according to claim 7, characterized in that a top bracing group (29) is fixedly connected to the inner wall of the bottom of said sizing chamber (38) below the bridge-straight component (27).

9. A CPVC composite protection tube according to claim 8, characterized in that the bottom outer wall of base (20) is fixedly connected with a supporting frame (34), the top outer wall of base (20) is provided with a plurality of grooves (36), the top outer wall of base (20) is provided with a conveying roller (35), the bottom inner wall of the shaping chamber (38) is in a shape of filter screen, one side outer wall of base (20) is provided with a box door (37), one side outer wall of base (20) is provided with a material collecting chamber (30), and the bottom inner wall of the material collecting chamber (30) is in an inclined shape.