CN111037631A

CN111037631A - Preparation method of high-corrosion-resistance power tube

Info

Publication number: CN111037631A
Application number: CN201911424646.1A
Authority: CN
Inventors: 王婴
Original assignee: Hangzhou Nanxin Power Equipment Co Ltd
Current assignee: Hangzhou Nanxin Power Equipment Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-21
Anticipated expiration: 2039-12-31
Also published as: CN111037631B

Abstract

The preparation method of the high-corrosion-resistance electric power tube comprises the following steps: prepare material, mix, high temperature melting extrusion, cooling sizing, cutting spraying process need use cutting spraying equipment, cutting spraying equipment includes that fixed station, fixed station are used for fixed tubular product, are used for the mobile device that the tubular product removed, mobile device drive transmission and move at the tubular product inner wall, transmission drives cutting device and carries out rotatory cutting, the spraying of the spraying device on the cutting device at the tubular product inner wall. The invention integrates the spraying and cutting processes, improves the efficiency and ensures good cutting effect.

Description

Preparation method of high-corrosion-resistance power tube

Technical Field

The invention belongs to the technical field of power tubes, and particularly relates to a preparation method of a high-corrosion-resistance power tube.

Background

Most of the power tubes on the market are made of PVC plastic tubes, and the materials for manufacturing the plastic tubes are divided into two types, namely, one type is made of PVC resin and common calcium carbonate as main raw materials; the other is that the composite pipe is prepared by using recycled PVC and calcium carbonate as main raw materials, the pipe prepared by using the recycled PVC and the calcium carbonate as the main raw materials has high cost, other properties such as strength, toughness, corrosion resistance, heat resistance and other physical and chemical properties are common, and the pipe prepared by using the calcium carbonate as the main raw materials has low cost, but the color and the luster are not white, the inner and outer smoothness is rough, and the physical and chemical properties such as strength, toughness, corrosion resistance, heat resistance and the like are poor. Cutting process to the in-process of spraying process in current PVC tubular product production line because the incompatible reason of selection equipment, often adopt the mode of horizontal translation to shift section form tubular product to spraying department, lead to PVC tubular product production line to buckle the extension, occupied a large amount of factory building spaces, restricted the space utilization of factory building, be unfavorable for the rational arrangement of PVC tubular product production line in the factory building.

Disclosure of Invention

The invention provides a preparation method of a PVC electric power tube with low cost, corrosion resistance, high strength and high toughness in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a high-corrosion-resistance electric power tube.

In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a high-corrosion-resistance electric power tube comprises the following steps:

a. weighing raw materials by adopting a weighing device;

b. mixing: putting various raw materials into a mixer for mixing;

c. high-temperature melt extrusion: after the mixed materials are melted, extruding the materials through an extruder to form a tube blank;

d. cooling and sizing: the tube blank is formed by spraying, cooling and molding;

e. cutting and spraying: cutting and spraying the cooled and shaped tube blank by adopting cutting and spraying equipment to obtain a tube;

the cutting and spraying equipment in the step e comprises a fixed table, a moving device, a transmission device, a cutting device and a spraying device, wherein the fixed table is used for fixing the pipe, the moving device drives the transmission device to move on the inner wall of the pipe, the transmission device drives the cutting device to rotate and cut, and the spraying device on the cutting device sprays on the inner wall of the pipe; the cutting device comprises a material blocking assembly, a rotating disc fixedly arranged in the material blocking plate, a rotating groove arranged on the material blocking plate and provided with a U-shaped opening facing outwards, a cutting assembly arranged in the rotating groove and an air inlet pipe arranged on the cutting assembly; the material blocking assembly comprises a material blocking part, a clamping plate fixedly arranged on the material blocking cover and connected with the rotating disc in a buckling mode, and a scrap guide plate which is connected to the clamping plate and inclines towards the rotating disc; the cutting assembly comprises telescopic grooves formed in the inner walls of two sides of the rotary groove, telescopic rod sleeves fixedly arranged on the telescopic grooves, telescopic rods sleeved in the telescopic rod sleeves, a moving shaft fixedly arranged on the telescopic rods, a cutting head fixedly arranged on the moving shaft, and a rotating rod hinged on the cutting head, wherein the rotating rod is arranged on the rotating rod and is rotatably connected with the transmission rod; the cutting and spraying comprises the following steps: tubular product gets into the fixed station carries out outside centre gripping fixedly, the inner wall that the mobile device removed the entering pipeline removes at the bottom of the pipeline, begins to move back, at the in-process that removes spraying device carries out the spraying to the pipeline inner wall, when removing the cutting position, establishes cutting device on the transmission cuts the pipeline inner wall, and the telescopic link cover carries out concertina movement with the telescopic link through the atmospheric pressure of intake pipe, drives the outside pipe wall of cutting head and cuts.

When a pipe enters the fixed station, the fixed station clamps and fixes the outside of the pipe, then the moving device moves into the inner wall of the pipe, the pipe moves to the farthest end of the pipe and then moves back, in the moving process, spraying is carried out while moving, then the pipe moves to a certain position, when the pipe needs to be cut, the cutting device arranged on the transmission device is driven by the transmission device to rotate, the telescopic rod sleeve and the telescopic rod are arranged in the telescopic groove on the inner side of the rotary groove in the rotary disc on the cutting device and carry out telescopic motion through the air pressure of the air inlet pipe to drive the moving shaft on the telescopic rod to move outwards, the cutting head on the moving shaft also moves outwards, when the pipe moves to contact with the inner wall of the following pipe, cutting is started, because the cutter head on the cutting head is arranged in a triangle, when the cutting head is used for cutting, a tip of the triangle is used for cutting, the material that cuts down at this time can extrude toward both sides, then becomes the oblique angle and extrudees out, splashes toward both sides, through connecting the cardboard on the rotary disk, in the guide of the chip guide board that links firmly with the cardboard entered into the striker plate, stores, when the cutting head angle is adjusted according to different pipe diameter needs, connects the dwang of connecting in the cutting head lower part and moves along with the removal of carriage release lever, drives the rotation of cutting head and adjusts the cutting angle. The cutting device and the spraying device are arranged to be used together, so that the space can be saved, and the efficiency is improved. The material blocking cover, the clamping plate and the scrap guide plate are matched with the triangular cutter head for use, so that cut materials can be obliquely splashed out to two sides through extrusion due to the triangular reason, the cut materials are obliquely designed towards the cutter head surface, and the openings with the large outer parts and the small inner parts are arranged to guide the materials to enter; when the angle of the cutting head is adjusted according to the requirements of different pipe diameters, the rotating rod connected to the lower part of the cutting head moves along with the movement of the moving rod to drive the cutting head to rotate to adjust the cutting angle, so that PVC pipes with different pipe diameters can be cut, the best cutting angle can be adjusted, the wear of the cutter head is smaller, and the service life can be prolonged; the cutter head is designed in a triangular mode, the structural strength of the triangular structure is highest, and each angle is the same, so that the cutter head can be continuously used only by rotating to the next angle when the cutter head needs to be replaced; when the cutting, because the PVC plastic tubing has the deflection, so when the cutting, lead to easily warping, then the tangent plane unevenness that the cutting was come out, cutting effect is poor, because keep off the material cover and pipeline inner wall diameter the same big, then have the setting to realize realizing the cutting in two fixed points of short distance inside on cutting assembly's both sides, accomplish not the deformation when cutting, can guarantee the level and smooth of tangent plane, cutting effect is good.

The PVC electric power tube is composed of the following raw materials in parts by weight: 90-110 parts of PVC resin, 20-40 parts of common calcium carbonate, 2-8 parts of nano calcium carbonate, 2-6 parts of PVC composite stabilizer, 0.3-1.5 parts of PE wax, 0.3-1.0 part of stearic acid, 0.6-2.2 parts of titanium dioxide and 1.0-3.5 parts of ACR.

The PVC electric power tube is composed of the following raw materials in parts by weight: 110 parts of PVC resin, 40 parts of common calcium carbonate, 8 parts of nano calcium carbonate, 6 parts of PVC composite stabilizer, 1.5 parts of PE wax, 1.0 part of stearic acid, 2.2 parts of titanium dioxide and 3.5 parts of ACR; the nano calcium carbonate is added on the basis of the blending of the original calcium carbonate and PVC resin for blending modification, so that the physical and chemical properties of the pipe, such as strength, toughness, corrosion resistance, heat resistance and the like, are greatly enhanced; and on the basis of the blending of the original calcium carbonate and PVC resin, the nano calcium carbonate is added to be blended and modified with the PVC resin, so that the physical and chemical properties of the pipe, such as strength, toughness, corrosion resistance, heat resistance and the like, are greatly enhanced. Meanwhile, a three-machine co-extrusion composite production technology is adopted in the processing process, and PVC resin, calcium carbonate and nano-grade calcium carbonate are used as main raw materials for the inner layer and the outer layer to be blended and modified, so that the inner and outer smoothness, the physical and mechanical properties, the chemical properties and the like of the pipe can reach standard indexes. The middle layer is made of a material which is prepared by blending and modifying PVC reclaimed materials, calcium carbonate and nano calcium carbonate serving as main raw materials, so that the strength and the service performance of the product are ensured, the middle layer in the whole pipe wall structure is thicker, and the inner layer and the outer layer are thinner, so that the production cost of the pipe is greatly reduced.

The moving device comprises a sliding round block which is connected to the transmission device in a sliding mode, a first moving plate which is hinged to the transmission assembly, a connecting moving shaft which is hinged to the first moving plate, a second moving plate which is hinged to the connecting shaft, and an annular sleeve which is fixedly arranged on the second moving plate, wherein the annular sleeve is arranged on the transmission device and is connected with the transmission device in a sliding mode; the outer ends of the first moving plate and the second moving plate are provided with rolling wheels, and the rolling wheels are connected with the first moving plate and the second moving plate in a rolling manner and can roll on the inner wall of the pipe. When the moving device needs to move inwards, the annular sleeve arranged on the transmission device slides inwards to drive the second moving plate fixed on the annular sleeve to move inwards, the connecting shaft is hinged between the second moving plate and the first moving plate, and the sliding round block on the first moving plate can slide radially and cannot slide axially, so that the second moving plate moves forwards, the lower ends of the first moving plate and the second moving plate are folded, the side ends of the first moving plate and the second moving plate are opened, the rolling wheels connected to the first moving plate and the second moving plate are attached to the inner wall of the pipeline upwards, and then the inner wall of the pipeline moves. The moving device adopts a three-point fixing method, and the three fixing feet are connected to the driving piece, so that an absolute centering can be ensured under the condition that the moving amount is constant, and the cutting device and the spraying device which are arranged on the moving device can be ensured to be absolutely vertical to the axis theoretically, so that the flatness of a tangent plane can be ensured to be high, the stress of the tangent plane is uniform, and the tangent plane is complete. The distance of every point is all the same when the spraying device sprays, can furthest's assurance the homogeneity of a spraying, can not appear inclining, and the distance is different leads to spouting the material that spouts to have a lot of to have a little, leads to the thickness inhomogeneous.

The transmission device comprises a transmission shaft, a push rod arranged on the inside of the transmission shaft, a movable disc fixedly arranged on the push rod, a threaded rod fixedly arranged on the movable disc, and a post rod sleeved inside the threaded rod. When the transmission shaft rotates, the cutting device is driven to cut, the spraying device is driven to perform rotary spraying, meanwhile, the push rod in the transmission shaft performs telescopic motion, the moving disc on the push rod is driven to perform reciprocating motion, and then rotation of threads is achieved. Therefore, the transmission shaft is used for driving the cutting device and the spraying device to work, synchronization can be realized, and the working efficiency is high.

The spraying device comprises a feeding hole arranged on the end face of the movable disc, a feeding assembly sleeved in the feeding hole, a rotating assembly arranged on the threaded rod, a transmission first material spraying pipe arranged on the transmission shaft head, a second material spraying pipe sleeved on the first material spraying pipe, a material penetrating plate arranged on the inner wall of the second material spraying pipe, a discharging spring fixedly arranged on the material penetrating plate, and a discharging ball fixedly arranged on the discharging spring; the feeding assembly comprises an annular feeding hole fixedly arranged on the feeding hole, a feeding spring fixedly arranged on the annular feeding hole and a feeding ball fixedly arranged on the feeding spring, the annular feeding hole is arranged in a manner that a step surface is matched with an inclined surface, the inner part of the inclined surface is large, the outer part of the inclined surface is small, and the feeding ball is only arranged on the inclined surface and is in contact with the inclined surface; the rotating assembly comprises a rotating connecting plate, blades fixedly arranged on the rotating connecting plate and a convex groove arranged on the end face of the rotating connecting plate. And the fixed rod is arranged on the convex groove and is in sliding connection with the convex groove. The convex groove is arranged in a horizontal convex shape with a small opening at the outer side and a large opening at the inner side, and the inner wall of the rotary connecting plate is provided with threads which are meshed with the threaded rod; the pipe orifice of the second discharge pipe is in a horn shape with a large upper part and a small lower part. When the spraying device needs spraying, the push rod pushes the movable disc to move forwards, the threaded rod connected to the movable disc rotates at the moment, the rotary connecting plate is connected to the threaded rod in a driving mode, and the rotary connecting plate rotates to drive the blades on the rotary connecting plate to rotate. Meanwhile, because the space in the spraying device is a closed space, when the movable plate moves inwards, the first spraying pipe and the second spraying pipe are arranged to stretch, when the movable plate stretches to be close to the inner wall, the spraying material penetrates through the material penetrating plate, when the internal air pressure is greater than the elastic force of the discharging spring, the discharging ball on the discharging spring is jacked open to realize discharging spraying of one spraying, when the movable plate moves to the limit position, the push rod moves backwards when material supplementing is to be carried out, and the cavity is in a negative pressure state and then is on the movable plate. When the internal negative pressure is smaller than the pulling force of the feeding spring, the feeding ball on the feeding spring is pulled away by the internal negative pressure, and then the entering of a spraying material is realized. The threaded rod that the cooperation push rod used can realize the extrusion spraying with removing the dish when the push rod promotes, and it is rotatory at spraying in-process threaded rod to remove the dish, and the blade on the threaded rod rotates, has realized that one stirs and smashes the refining that can realize the granule at spraying in-process blade to the spray coating, prevents to appear the pockmark on the surface on the spraying. Simultaneously, the single air pressure valve arranged at the discharge port can realize constant air pressure at the discharge port, and can ensure that the spraying is carried out on the inner wall of the pipeline in the discharging process, so that the spraying is more uniform, and the spraying effect is better and more smooth. The pipe orifice of the second spray pipe is set into a horn shape with a large top and a small bottom, so that the sprayed objects are annularly sprayed out in an inclined mode, the spraying range is larger, the spraying can be performed in an inclined mode through the horn-shaped discharge port when the pipeline is cut off by the cutting device, the cut end face is sprayed, and secondary spraying is not needed.

The fixed station comprises a bedplate, a bedplate groove fixedly arranged on the bedplate, a first sliding rod arranged in the bedplate groove and in sliding connection with the bedplate groove, a second sliding rod sleeved on the first sliding rod, and a fixed frame fixedly arranged on the second sliding rod. After the pipe material got into the fixed station, the first slide bar of platen inslot slided, drove the mount on the second slide bar and moved to both ends and want cutting plane both ends, and first slide bar is fixed in second slide bar is flexible. Set up the platen groove, slide including making the connecting rod, can make the connecting rod remove at the both ends of wanting the cutting plane, fixed with the mount, just so can externally realize fixing at nearest both ends, increase cutting strength, non-deformable, and the fender cover on the cooperation cutting device uses, can realize outer clamp inner top, and an intensity when guaranteeing the PVC pipeline cutting guarantees non-deformable.

The invention has the following advantages: the method realizes that the PVC electric power pipe has low cost, high corrosion resistance, high strength and high toughness, can effectively reduce the space, combines cutting and spraying together, and improves the production efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a partial schematic view of the cross-section taken along line D-D in fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view at B in fig. 3.

Fig. 6 is an enlarged view at C in fig. 3.

Fig. 7 is an enlarged view at D in fig. 3.

Fig. 8 is an enlarged view of fig. 7.

Fig. 9 is an enlarged view at E in fig. 3.

FIG. 10 is a top view of the present invention.

Fig. 11 is a sectional perspective view taken along line G-G in fig. 10.

Fig. 12 is an enlarged view at F in fig. 11.

Fig. 13 is a cross-sectional perspective view taken along line F-F of fig. 10.

Fig. 14 is an enlarged view at G in fig. 13.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

a. weighing raw materials by adopting a weighing device;

b. mixing: putting various raw materials into a mixer for mixing;

the PVC electric power tube is composed of the following raw materials in parts by weight: 90 parts of PVC resin, 20 parts of common calcium carbonate, 2 parts of nano calcium carbonate, 2 parts of PVC composite stabilizer, 0.3 part of PE wax, 0.3 part of stearic acid, 0.6 part of titanium dioxide and 1.0 part of ACR.

The cutting and spraying equipment in the step e comprises a fixed table 1, a moving device 2, a transmission device 3, a cutting device 4 and a spraying device 5, wherein the fixed table is used for fixing a pipe, the moving device drives the transmission device to move on the inner wall of the pipe, the transmission device drives the cutting device to rotate and cut, and the spraying device on the cutting device sprays on the inner wall of the pipe; the cutting device 4 comprises a material blocking assembly 41, a rotating disc 42 fixedly arranged in the material blocking plate 41, a rotating groove 43 with an outward U-shaped opening, a cutting assembly 44 arranged in the rotating groove 43 and an air inlet pipe 45 arranged on the cutting assembly 44, wherein the rotating groove 43 is arranged on the material blocking plate; the material blocking assembly 41 comprises a material blocking cover 411, a clamping plate 412 fixedly arranged on the material blocking cover 411 and connected with the rotating disc 42 in a buckling mode, and a scrap guide plate 413 connected to the clamping plate 412 and inclined towards the rotating disc; the cutting assembly 44 includes a telescopic groove 441 disposed on the inner walls of both sides of the rotating groove 43, a telescopic rod sleeve 442 fixedly disposed on the telescopic groove 441, a telescopic rod 443 sleeved in the telescopic rod sleeve 442, a moving shaft 444 fixedly disposed on the telescopic rod 443, a cutting head 445 fixedly disposed on the moving shaft 444, a rotating rod 446 hinged on the cutting head 445, and a hinge shaft 447 rotatably connected with the driving rod disposed on the rotating rod 446, wherein the hinge shaft 447 is disposed in a hinge hole 448, the hinge hole 448 is disposed on the moving disk 449, and the cutting head 445 is disposed in a triangular structure. When a pipe enters the fixed station, the fixed station clamps and fixes the outside of the pipe, then the moving device moves into the inner wall of the pipe, the pipe moves to the farthest end of the pipe and then moves back, in the moving process, spraying is carried out while moving, then the pipe moves to a certain position, when the pipe needs to be cut, the cutting device arranged on the transmission device is driven by the transmission device to rotate, the telescopic rod sleeve and the telescopic rod are arranged in the telescopic groove on the inner side of the rotary groove in the rotary disc on the cutting device and carry out telescopic motion through the air pressure of the air inlet pipe to drive the moving shaft on the telescopic rod to move outwards, the cutting head on the moving shaft also moves outwards, when the pipe moves to contact with the inner wall of the following pipe, cutting is started, because the cutter head on the cutting head is arranged in a triangle, when the cutting head is used for cutting, a tip of the triangle is used for cutting, the material that cuts down at this time can extrude toward both sides, then becomes the oblique angle and extrudees out, splashes toward both sides, through connecting the cardboard on the rotary disk, in the guide of the chip guide board that links firmly with the cardboard entered into the striker plate, stores, when the cutting head angle is adjusted according to different pipe diameter needs, connects the dwang of connecting in the cutting head lower part and moves along with the removal of carriage release lever, drives the rotation of cutting head and adjusts the cutting angle. The cutting device and the spraying device are arranged to be used together, so that the space can be saved, and the efficiency is improved. The material blocking cover, the clamping plate and the scrap guide plate are matched with the triangular cutter head for use, so that cut materials can be obliquely splashed out to two sides through extrusion due to the triangular reason, the cut materials are obliquely designed towards the cutter head surface, and the openings with the large outer parts and the small inner parts are arranged to guide the materials to enter; when the angle of the cutting head is adjusted according to the requirements of different pipe diameters, the rotating rod connected to the lower part of the cutting head moves along with the movement of the moving rod to drive the cutting head to rotate to adjust the cutting angle, so that PVC pipes with different pipe diameters can be cut, the best cutting angle can be adjusted, the wear of the cutter head is smaller, and the service life can be prolonged; the cutter head is designed in a triangular mode, the structural strength of the triangular structure is highest, and each angle is the same, so that the cutter head can be continuously used only by rotating to the next angle when the cutter head needs to be replaced; when the cutting, because the PVC plastic tubing has the deflection, so when the cutting, lead to easily warping, then the tangent plane unevenness that the cutting was come out, cutting effect is poor, because keep off the material cover and pipeline inner wall diameter the same big, then have the setting to realize realizing the cutting in two fixed points of short distance inside on cutting assembly's both sides, accomplish not the deformation when cutting, can guarantee the level and smooth of tangent plane, cutting effect is good.

The moving device 2 comprises a sliding round block 25 connected to the transmission device 3 in a sliding manner, a first moving plate 21 hinged to the transmission assembly, a connecting moving shaft 22 hinged to the first moving plate, a second moving plate 23 hinged to the connecting shaft 22, and an annular sleeve 24 fixedly arranged on the second moving plate 23, wherein the annular sleeve 24 is arranged on the transmission device 3 and is connected with the transmission device in a sliding manner; the outer ends of the first moving plate 21 and the second moving plate 23 are respectively provided with a rolling wheel 24 which is connected with the first moving plate 21 and the moving plate 23 in a rolling way and can roll on the inner wall of the pipe. When the moving device needs to move inwards, the annular sleeve arranged on the transmission device slides inwards to drive the second moving plate fixed on the annular sleeve to move inwards, the connecting shaft is hinged between the second moving plate and the first moving plate, and the sliding round block on the first moving plate can slide radially and cannot slide axially, so that the second moving plate moves forwards, the lower ends of the first moving plate and the second moving plate are folded, the side ends of the first moving plate and the second moving plate are opened, the rolling wheels connected to the first moving plate and the second moving plate are attached to the inner wall of the pipeline upwards, and then the inner wall of the pipeline moves. The moving device adopts a three-point fixing method, and the three fixing feet are connected to the driving piece, so that an absolute centering can be ensured under the condition that the moving amount is constant, and the cutting device and the spraying device which are arranged on the moving device can be ensured to be absolutely vertical to the axis theoretically, so that the flatness of a tangent plane can be ensured to be high, the stress of the tangent plane is uniform, and the tangent plane is complete. The distance of every point is all the same when the spraying device sprays, can furthest's assurance the homogeneity of a spraying, can not appear inclining, and the distance is different leads to spouting the material that spouts to have a lot of to have a little, leads to the thickness inhomogeneous.

The transmission device 3 comprises a transmission shaft 31, a push rod 32 arranged on the inside of the transmission shaft 31, a movable disc 33 fixedly arranged on the push rod 32, a threaded rod 34 fixedly arranged on the movable disc 33, and a post rod 35 sleeved inside the threaded rod 34; when the transmission shaft rotates, the cutting device is driven to cut, the spraying device is driven to rotate, meanwhile, the push rod in the transmission shaft performs telescopic motion, the moving disc on the push rod is driven to perform reciprocating motion, and then the rotation of the threaded rod is realized; therefore, the transmission shaft is used for driving the cutting device and the spraying device to work, synchronization can be realized, and the working efficiency is high.

The spraying device 5 comprises a feeding hole 51 arranged on the end face of the movable disc, a feeding assembly 52 sleeved on the feeding hole, a rotating assembly 53 arranged on the threaded rod 34, a first transmission material spraying pipe 54 arranged on the head of the transmission shaft 31, a second material spraying pipe 55 sleeved on the first material spraying pipe 54, a material penetrating plate 56 arranged on the inner wall of the second material spraying pipe 55, a discharging spring 57 fixedly arranged on the material penetrating plate 56, and a discharging ball 58 fixedly arranged on the discharging spring 57; the feeding assembly 52 comprises an annular feeding hole 521 fixedly arranged on the feeding hole 51, a feeding spring 522 fixedly arranged on the annular feeding hole 521, and a feeding ball 523 fixedly arranged on the feeding spring 522, wherein the annular feeding hole 521 is arranged in a manner of matching a step surface with an inclined surface, the inner part and the outer part of the inclined surface are arranged in a large-size manner, and the feeding ball 523 is only arranged on the inclined surface and contacts with the inclined surface; the rotating assembly 53 includes a rotating connecting plate 531, a blade 532 fixed to the rotating connecting plate 531, and a groove 532 formed in an end surface of the rotating connecting plate 531. And a fixing rod 533 arranged on the tongue 532 and slidably connected with the tongue. The convex groove is arranged in a horizontal convex shape with a small opening at the outer side and a large opening at the inner side, and the inner wall of the rotary connecting plate is provided with threads which are meshed with the threaded rod; the pipe orifice of the second discharge pipe is in a horn shape with a large upper part and a small lower part. When the spraying device needs spraying, the push rod pushes the movable disc to move forwards, the threaded rod connected to the movable disc rotates at the moment, the rotary connecting plate is connected to the threaded rod in a driving mode, and the rotary connecting plate rotates to drive the blades on the rotary connecting plate to rotate. Meanwhile, because the space in the spraying device is a closed space, when the movable plate moves inwards, the first spraying pipe and the second spraying pipe are arranged to stretch, when the movable plate stretches to be close to the inner wall, the spraying material penetrates through the material penetrating plate, when the internal air pressure is greater than the elastic force of the discharging spring, the discharging ball on the discharging spring is jacked open to realize discharging spraying of one spraying, when the movable plate moves to the limit position, the push rod moves backwards when material supplementing is to be carried out, and the cavity is in a negative pressure state and then is on the movable plate. When the internal negative pressure is smaller than the pulling force of the feeding spring, the feeding ball on the feeding spring is pulled away by the internal negative pressure, and then the entering of a spraying material is realized. The threaded rod that the cooperation push rod used can realize the extrusion spraying with removing the dish when the push rod promotes, and it is rotatory at spraying in-process threaded rod to remove the dish, and the blade on the threaded rod rotates, has realized that one stirs and smashes the refining that can realize the granule at spraying in-process blade to the spray coating, prevents to appear the pockmark on the surface on the spraying. Simultaneously, the single air pressure valve arranged at the discharge port can realize constant air pressure at the discharge port, and can ensure that the spraying is carried out on the inner wall of the pipeline in the discharging process, so that the spraying is more uniform, and the spraying effect is better and more smooth. The pipe orifice of the second spray pipe is set into a horn shape with a large top and a small bottom, so that the sprayed objects are annularly sprayed out in an inclined mode, the spraying range is larger, the spraying can be performed in an inclined mode through the horn-shaped discharge port when the pipeline is cut off by the cutting device, the cut end face is sprayed, and secondary spraying is not needed.

The fixed table 1 comprises a table plate 11, a table plate groove 12 fixedly arranged on the table plate 11, a first sliding rod 13 arranged in the table plate groove 12 and slidably connected with the table plate groove 12, a second sliding rod 14 sleeved on the first sliding rod 13, and a fixed frame 15 fixedly arranged on the second sliding rod 14. After the pipe material got into the fixed station, the first slide bar of platen inslot slided, drove the mount on the second slide bar and moved to both ends and want cutting plane both ends, and first slide bar is fixed in second slide bar is flexible. Set up the platen groove, slide including making the connecting rod, can make the connecting rod remove at the both ends of wanting the cutting plane, fixed with the mount, just so can externally realize fixing at nearest both ends, increase cutting strength, non-deformable, and the fender cover on the cooperation cutting device uses, can realize outer clamp inner top, and an intensity when guaranteeing the PVC pipeline cutting guarantees non-deformable.

Example 2

a. weighing raw materials by adopting a weighing device;

b. mixing: putting various raw materials into a mixer for mixing;

the PVC electric power tube is composed of the following raw materials in parts by weight: 110 parts of PVC resin, 40 parts of common calcium carbonate, 8 parts of nano calcium carbonate, 6 parts of PVC composite stabilizer, 1.5 parts of PE wax, 1.0 part of stearic acid, 2.2 parts of titanium dioxide and 3.5 parts of ACR.

Example 3

a. weighing raw materials by adopting a weighing device;

b. mixing: putting various raw materials into a mixer for mixing;

the PVC electric power tube is composed of the following raw materials in parts by weight: 105 parts of PVC resin, 35 parts of common calcium carbonate, 6 parts of nano calcium carbonate, 4 parts of PVC composite stabilizer, 0.5 part of PE wax, 0.8 part of stearic acid, 1.2 parts of titanium dioxide and 2.6 parts of ACR.

Claims

1. A preparation method of a high-corrosion-resistance electric power tube is characterized by comprising the following steps: the method comprises the following steps:

a. preparing materials: weighing raw materials by adopting a weighing device;

b. mixing: putting various raw materials into a mixer for mixing;

the cutting and spraying equipment in the step e comprises a fixed table (1), a moving device (2), a transmission device (3), a cutting device (4) and a spraying device (5), wherein the fixed table is used for fixing a pipe, the moving device (2) drives the transmission device (3) to move on the inner wall of the pipe, the transmission device (3) drives the cutting device (4) to rotate and cut, and the spraying device (5) on the cutting device (4) sprays on the inner wall of the pipe; the cutting device (4) comprises a material blocking assembly (41), a rotating disc (42) fixedly arranged in the material blocking plate (41), a rotating groove (43) with a U-shaped opening outwards arranged on the material blocking plate, a cutting assembly (44) arranged in the rotating groove (43), and an air inlet pipe (45) arranged on the cutting assembly (44); the material blocking assembly (41) comprises a material blocking plate (411), a clamping plate (412) fixedly arranged on the material blocking cover (411) and connected with the rotating disc (42) in a buckling mode, and a chip guide plate (413) which is connected to the clamping plate (412) and inclines towards the rotating disc; the cutting assembly (44) comprises telescopic grooves (441) arranged on the inner walls of two sides of the rotating groove (43), a telescopic rod sleeve (442) fixedly arranged on the telescopic grooves (441), a telescopic rod (443) sleeved in the telescopic rod sleeve (442), a moving shaft (444) fixedly arranged on the telescopic rod (443), a cutting head (445) fixedly arranged on the moving shaft (444), a rotating rod (446) hinged to the cutting head (445), and a hinge shaft (447) arranged on the rotating rod (446) and rotatably connected with the driving rod, wherein the hinge shaft (447) is arranged in the hinge hole (448), the hinge hole (448) is arranged on the moving disc (449), and the cutting head (445) is arranged in a triangular structure; the cutting and spraying comprises the following steps: tubular product gets into the fixed station carries out outside centre gripping fixedly, the inner wall that the mobile device removed the entering pipeline removes at the bottom of the pipeline, begins to move back, at the in-process that removes spraying device carries out the spraying to the pipeline inner wall, when removing the cutting position, establishes cutting device on the transmission cuts the pipeline inner wall, and the telescopic link cover carries out concertina movement with the telescopic link through the atmospheric pressure of intake pipe, drives the outside pipe wall of cutting head and cuts.

2. The method for preparing a high corrosion resistance electric power tube according to claim 1, wherein: the PVC electric power tube is composed of the following raw materials in parts by weight: 90-110 parts of PVC resin, 20-40 parts of common calcium carbonate, 2-8 parts of nano calcium carbonate, 2-6 parts of PVC composite stabilizer, 0.3-1.5 parts of PE wax, 0.3-1.0 part of stearic acid, 0.6-2.2 parts of titanium dioxide and 1.0-3.5 parts of ACR.

3. The method for preparing a high corrosion resistance electric power tube according to claim 2, wherein: the PVC electric power tube is composed of the following raw materials in parts by weight: 105 parts of PVC resin, 35 parts of common calcium carbonate, 6 parts of nano calcium carbonate, 4 parts of PVC composite stabilizer, 0.5 part of PE wax, 0.8 part of stearic acid, 1.2 parts of titanium dioxide and 2.6 parts of ACR.

4. The method for preparing a high corrosion resistance electric power tube according to claim 1, wherein: the moving device (2) comprises a sliding round block (25) connected to the transmission device (3) in a sliding mode, a first moving plate (21) hinged to the transmission assembly, a connecting shaft (22) hinged to the first moving plate, a second moving plate (23) hinged to the connecting shaft (22), and an annular sleeve (24) fixedly arranged on the second moving plate (23), wherein the annular sleeve (24) is arranged on the transmission device (3) and is connected with the transmission device in a sliding mode; the outer ends of the first moving plate (21) and the second moving plate (23) are respectively provided with a rolling wheel (25) which is connected with the first moving plate (21) and the moving plate (23) in a rolling way and can roll on the inner wall of the pipe; the annular sleeve arranged on the transmission device slides inwards to drive the second movable plate fixed on the annular sleeve to move inwards, the connecting shaft is hinged between the second movable plate and the first movable plate and moves radially, the second movable plate moves forwards, the lower ends of the first movable plate and the second movable plate are closed, the side ends of the first movable plate and the second movable plate are opened upwards, and the rolling wheels connected to the first movable plate and the second movable plate are attached to the inner wall of the first movable plate and the second movable plate.

5. The method for preparing a high corrosion resistance electric power tube according to claim 1, wherein: the transmission device (3) comprises a transmission shaft (31), a push rod (32) arranged inside the transmission shaft (31), a movable disc (33) fixedly arranged on the push rod (32), a threaded rod (34) fixedly arranged on the movable disc (33), and a post rod (35) sleeved inside the threaded rod (34); when the transmission shaft rotates, the rotating disc is driven to rotate, the cutting head on the rotating disc cuts, the transmission shaft drives the spraying device to rotate, meanwhile, the push rod in the transmission shaft performs telescopic motion, the moving disc on the push rod is driven to perform reciprocating motion, and then rotation of the threaded rod is achieved.

6. The method for preparing a high corrosion resistance electric power tube according to claim 1, wherein: the spraying device (5) comprises a feeding hole (51) arranged on the end face of the movable disc, a feeding assembly (52) sleeved on the feeding hole (51), a rotating assembly (53) arranged on the threaded rod (34), a first transmission spraying pipe (54) arranged on the head of the transmission shaft (31), a second spraying pipe (55) sleeved on the first spraying pipe (54), a material penetrating plate (56) arranged on the inner wall of the second spraying pipe (55), a discharging spring (57) fixedly arranged on the material penetrating plate (56), and a discharging ball (58) fixedly arranged on the discharging spring (57); the feeding assembly (52) comprises an annular feeding hole (521) fixedly arranged on the feeding hole (51), a feeding spring (522) fixedly arranged on the annular feeding hole (521), and a feeding ball (523) fixedly arranged on the feeding spring (522), wherein the annular feeding hole (521) is in a step surface and is matched with an inclined plane, and the inner side and the outer side of the inclined plane are arranged in a large and small mode.

7. The method for preparing a high corrosion resistance electric power tube according to claim 1, wherein: the fixed table (1) comprises a table plate (11), a table plate groove (12) fixedly arranged on the table plate (11), a first sliding rod (13) arranged in the table plate groove (12) and in sliding connection with the table plate groove (12), a second sliding rod (14) sleeved on the first sliding rod (13), and a fixed frame (15) fixedly arranged on the second sliding rod (14); after the pipe material got into the fixed station, the first slide bar of platen inslot slided, drove the mount on the second slide bar and moved to both ends and want cutting plane both ends, and first slide bar is fixed to the pipe material in second slide bar is flexible.