阅读说明：本技术 一种抗菌的pe给水管材及其制备方法 (Antibacterial PE water supply pipe and preparation method thereof ) 是由 刘俊峰 汪进南 周文军 王�华 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种抗菌的PE给水管材及其制备方法,该管材包括内层、芯层和外层,内层、芯层和外层由内向外依次设置；所述内层通过下述质量份的原料制备得到：聚乙烯树脂35-40份、抗菌母粒5-8份；所述芯层通过下述质量份的原料制备得到：聚乙烯40-45份；所述外层通过下述质量份的原料制备得到：聚乙烯树脂25-30份、高光泽度增强母粒2-4份；该管材功能多样,可以满足管材的不同性能需求,抗菌效果明显,生产时可以有效去除管材坯体端部的毛刺,避免管材在对接时对人体造成伤害,本发明可以通过各个打磨座轮流进行打磨和清理废屑工作,打磨和清理废屑可以同时进行,提高了生产效率。(The invention discloses an antibacterial PE water supply pipe and a preparation method thereof, wherein the pipe comprises an inner layer, a core layer and an outer layer, wherein the inner layer, the core layer and the outer layer are sequentially arranged from inside to outside; the inner layer is prepared from the following raw materials in parts by mass: 35-40 parts of polyethylene resin and 5-8 parts of antibacterial master batch; the core layer is prepared from the following raw materials in parts by mass: 40-45 parts of polyethylene; the outer layer is prepared from the following raw materials in parts by mass: 25-30 parts of polyethylene resin and 2-4 parts of high-glossiness enhanced master batch; the pipe has various functions, can meet different performance requirements of the pipe, has obvious antibacterial effect, can effectively remove burrs at the end part of a pipe blank during production, and avoids the pipe from damaging a human body during butt joint.)

1. The antibacterial PE water supply pipe is characterized by comprising an inner layer, a core layer and an outer layer, wherein the inner layer, the core layer and the outer layer are sequentially arranged from inside to outside;

the inner layer is prepared from the following raw materials in parts by mass: 35-40 parts of polyethylene resin and 5-8 parts of antibacterial master batch;

the core layer is prepared from the following raw materials in parts by mass: 40-45 parts of polyethylene;

the outer layer is prepared from the following raw materials in parts by mass: 25-30 parts of polyethylene resin and 2-4 parts of high-glossiness enhanced master batch;

the PE water supply pipe is prepared by the following steps:

step one, adding the raw materials of the inner layer, the core layer and the outer layer into a three-layer co-extrusion mold, and performing composite extrusion molding at the temperature of 190 plus material and 220 ℃ to obtain a pipe blank;

step two, placing the pipe blank between clamping rollers (6) of two clamping plates (4) of the pipe head polishing mechanism, rotating two hand wheels, driving two threaded rods (18) to rotate respectively by the two hand wheels, driving two moving blocks (17) to slide in corresponding guide rails (16) while the two threaded rods (18) rotate, driving the two clamping plates (4) to move oppositely by the two moving blocks (17), driving the clamping rollers (6) of the two clamping plates (4) to clamp the pipe blank, at the moment, meshing the two driven gears (7), enabling the two conveying rollers (19) to be in close contact with the pipe blank, starting the conveying motor (5), driving the driving gear (8) to rotate by the conveying motor (5), driving the driving gear (8) to rotate with the two driven gears (7), driving the conveying rollers (19) to rotate, driving the pipe blank to move by the conveying rollers (19), enabling one end of the pipe blank to be inserted into a polishing groove (111) of a pipe head polishing seat (11), and starting the polishing motor (22), wherein the polishing motor (22) drives the connecting part (25) to rotate and drives the polishing seat (11) to rotate, and one end of the pipe blank is polished to obtain the antibacterial PE water supply pipe.

2. The antimicrobial PE water supply pipe material as claimed in claim 1, wherein the high gloss enhancing masterbatch is prepared by the steps of:

uniformly mixing 35-45 parts of polyethylene resin, 30-40 parts of pretreated nano carbon black, 2-3 parts of lubricant, 4-6 parts of processing aid, 1-3 parts of antioxidant and 2-4 parts of light stabilizer in parts by mass, and then refining, extruding and granulating to obtain high-glossiness reinforced master batch; the banburying temperature is 135-170 ℃, and the granulation temperature is 185-205 ℃.

3. The antibacterial PE water supply pipe material as claimed in claim 2, wherein the lubricant is polyolefin oligomer, the processing aid is ethylene copolymer or polyethylene graft, the antioxidant is phosphite antioxidant, and the light stabilizer is benzotriazole ultraviolet absorber.

4. The antibacterial PE water supply pipe material as claimed in claim 1, wherein the antibacterial masterbatch is prepared by the following steps: according to the mass parts, 40-50 parts of polyethylene resin, 8-10 parts of pretreated nano carbon black, 15-18 parts of antibacterial component and 5-7 parts of lubricant are uniformly mixed, and then are subjected to refining and extrusion granulation to obtain the antibacterial master batch.

5. The antibacterial PE water supply pipe material as claimed in claim 2, wherein the pretreated nano carbon black is prepared from the following raw materials in parts by mass: 30-45 parts of nano carbon black, 1-3 parts of polyolefin hyperdispersant, 2-4 parts of graft copolymer hyperdispersant and 0.5-1 part of surface synergist;

the pretreated nano carbon black is obtained by carrying out surface treatment on the nano carbon black in an atomizing and spraying manner by using a surface synergist, a polyolefin hyper-dispersant and a graft copolymer hyper-dispersant and drying; the surface synergist is titanate or aluminate.

6. The antibacterial PE water supply pipe material as claimed in claim 4, wherein the antibacterial component is formed by mixing silver-loaded jade powder, copper-loaded montmorillonite powder, nano silver, nano zinc oxide, isothiazolinone and phenol according to a mass ratio of 1.5:1.6:1:1.1:0.5: 0.8.

7. The preparation method of the antibacterial PE water supply pipe is characterized by comprising the following steps:

step one, adding the raw materials of the inner layer, the core layer and the outer layer into a three-layer co-extrusion mold, and performing composite extrusion molding at the temperature of 190 plus material and 220 ℃ to obtain a pipe blank;

step two, placing the pipe blank between clamping rollers (6) of two clamping plates (4) of the pipe head polishing mechanism, rotating two hand wheels, driving two threaded rods (18) to rotate respectively by the two hand wheels, driving two moving blocks (17) to slide in corresponding guide rails (16) while the two threaded rods (18) rotate, driving the two clamping plates (4) to move oppositely by the two moving blocks (17), driving the clamping rollers (6) of the two clamping plates (4) to clamp the pipe blank, at the moment, meshing the two driven gears (7), enabling the two conveying rollers (19) to be in close contact with the pipe blank, starting the conveying motor (5), driving the driving gear (8) to rotate by the conveying motor (5), driving the driving gear (8) to rotate with the two driven gears (7), driving the conveying rollers (19) to rotate, driving the pipe blank to move by the conveying rollers (19), enabling one end of the pipe blank to be inserted into a polishing groove (111) of a pipe head polishing seat (11), and starting the polishing motor (22), wherein the polishing motor (22) drives the connecting part (25) to rotate and drives the polishing seat (11) to rotate, and one end of the pipe blank is polished to obtain the antibacterial PE water supply pipe.

8. The preparation method of the antibacterial PE water supply pipe material according to claim 7, wherein the pipe head grinding mechanism comprises a support frame (1), a connecting plate (2) is fixedly installed on the support frame (1), a mounting plate (3) is fixedly installed at one end of the connecting plate (2), two clamping plates (4) are movably installed at one side of the mounting plate (3), two clamping rollers (6) and a conveying roller (19) are rotatably installed at the bottoms of the two clamping plates (4), and the conveying roller (19) is located between the two clamping rollers (6);

the belt wheel polishing device is characterized in that a rotating shaft (24) is rotatably installed on the support frame (1) through a bearing, a rotating plate (9) is fixedly installed at one end of the rotating shaft (24), a rotating motor (10) is fixedly installed on the support frame (1), the end portion of an output shaft of the rotating motor (10) is fixedly connected with the other end of the rotating shaft (24), a plurality of polishing seats (11) are rotatably installed at one side of the rotating plate (9), the plurality of polishing seats (11) are distributed in an equal radian annular shape, a polishing groove (111) is formed in one end of each polishing seat (11), the other end of each polishing seat (11) penetrates through the rotating plate (9) and extends to the other side of the rotating plate (9), a connecting portion (25) is fixedly installed at the other end of each polishing seat (11), a through hole is formed in each connecting portion (25), the through hole is communicated with the polishing grooves (111), and a belt wheel, a plurality of grinding motors (22) are fixedly mounted on the other side of the rotating plate (9), a plurality of grinding seats (11) correspond to the plurality of grinding motors (22) one by one, a belt pulley II is fixedly mounted on an output shaft of each grinding motor (22), the output shaft of each grinding motor (22) is connected with the corresponding connecting part (25) through a belt pulley I, a belt pulley II and a belt in a transmission manner, a cleaning box (12) is arranged on one side of the rotating plate (9), the cleaning box (12) is fixedly connected with the supporting frame (1) through a fixing frame (20), openings (121) are respectively formed in the side walls of the two sides of the cleaning box (12), an arc-shaped notch (122) is formed in the side wall of the cleaning box (12) close to the rotating plate (9), the two ends of the arc-shaped notch (122) are respectively communicated with the two openings (121), and a turnover cover (23) is mounted on the cleaning box (12), the automatic cleaning device is characterized in that a driving cylinder (13) is fixedly mounted on the support frame (1), a cleaning motor (14) is fixedly mounted at the end part of an output rod of the driving cylinder (13), and a cleaning roller (15) is fixedly mounted at the end part of an output shaft of the cleaning motor (14).

9. The preparation method of the antibacterial PE water supply pipe material according to claim 8, wherein two guide rails (16) are fixedly installed on one side of the installation plate (3), moving blocks (17) are slidably installed on the two guide rails (16), the two moving blocks (17) are respectively and fixedly connected with the two clamping plates (4), two installation seats (21) are fixedly installed on one side of the installation plate (3), threaded rods (18) are respectively and threadedly connected in the two installation seats (21), one ends of the two threaded rods (18) are respectively and rotatably connected with the two moving blocks (17), hand wheels are respectively and fixedly installed at the other ends of the two threaded rods (18), driven gears (7) are respectively and fixedly installed at one ends of the two clamping rollers (6), the two driven gears (7) are engaged with each other, a conveying motor (5) is fixedly installed on one of the clamping plates (4), the end part of an output shaft of the conveying motor (5) is fixedly provided with a driving gear (8), and the driving gear (8) is meshed with one driven gear (7).

10. The preparation method of the antibacterial PE water supply pipe material as claimed in claim 8, wherein the working method of the pipe head grinding mechanism specifically comprises the following steps:

step one, a pipe blank is placed between clamping rollers (6) of two clamping plates (4), two hand wheels are rotated, the two hand wheels respectively drive two threaded rods (18) to rotate, the two threaded rods (18) drive two moving blocks (17) to slide in corresponding guide rails (16) while rotating, the two moving blocks (17) drive the two clamping plates (4) to move towards each other and drive the clamping rollers (6) of the two clamping plates (4) to clamp the pipe blank, at the moment, the two driven gears (7) are meshed with each other, the two conveying rollers (19) are in close contact with the pipe blank, a conveying motor (5) is started, the conveying motor (5) drives a driving gear (8) to rotate, the driving gear (8) drives the two driven gears (7) to rotate and drives the conveying rollers (19) to rotate, the conveying rollers (19) drive the pipe blank to move, one end of the pipe blank is inserted into a polishing groove (111) of a polishing seat (11), starting a polishing motor (22), wherein the polishing motor (22) drives the connecting part (25) to rotate and drives a polishing seat (11) to rotate so as to polish one end of the pipe blank;

step two, start rotating electrical machines (10), rotating electrical machines (10) drive pivot (24) and rotate, pivot (24) drive commentaries on classics board (9) and rotate, and drive and polish seat (11) and pass opening (121) and enter into in clearance case (12), start cleaning motor (14), cleaning motor (14) drive cleaning roller (15) and rotate, start and drive actuating cylinder (13), it drives cleaning motor (14) and cleaning roller (15) removal to drive actuating cylinder (13), make cleaning roller (15) insert in polishing seat (11), to polishing seat (11) inside clearance, the sweeps after the clearance falls into clearance case (12), open flip (23), clear up the sweeps in clearance case (12).

Technical Field

The invention relates to a water supply pipe, in particular to an antibacterial PE water supply pipe and a preparation method thereof.

Background

The PE (polyethylene) material is widely applied to the field of water supply pipe manufacturing due to the characteristics of high strength, corrosion resistance, no toxicity and the like. Because it can not rust, it is an ideal pipe material for replacing common iron water supply pipe; traditional PE supplies water tubular product function singleness, can't satisfy the different performance demands of actual tubular product, and antibiotic effect is poor moreover, and traditional PE supplies water tubular product can have the burr when production, causes the injury to the human body easily when the butt joint, and traditional PE simultaneously supplies water tubular product's production efficiency low.

Disclosure of Invention

The invention aims to provide an antibacterial PE water supply pipe and a preparation method thereof, and solves the technical problems that the traditional PE water supply pipe is single in function, poor in antibacterial effect, easy to damage human bodies during butt joint and low in production efficiency due to burrs on the pipe.

The purpose of the invention can be realized by the following technical scheme:

an antibacterial PE (polyethylene) water supply pipe comprises an inner layer, a core layer and an outer layer, wherein the inner layer, the core layer and the outer layer are sequentially arranged from inside to outside;

the inner layer is prepared from the following raw materials in parts by mass: 35-40 parts of polyethylene resin and 5-8 parts of antibacterial master batch;

the core layer is prepared from the following raw materials in parts by mass: 40-45 parts of polyethylene;

the outer layer is prepared from the following raw materials in parts by mass: 25-30 parts of polyethylene resin and 2-4 parts of high-glossiness enhanced master batch.

Further, the high-glossiness enhancing master batch is prepared by the following steps:

uniformly mixing 35-45 parts of polyethylene resin, 30-40 parts of pretreated nano carbon black, 2-3 parts of lubricant, 4-6 parts of processing aid, 1-3 parts of antioxidant and 2-4 parts of light stabilizer in parts by mass, and then refining, extruding and granulating to obtain high-glossiness reinforced master batch; the banburying temperature is 135-170 ℃, and the granulation temperature is 185-205 ℃.

Further, the lubricant is polyolefin oligomer, the processing aid is ethylene copolymer or polyethylene graft, the antioxidant is phosphite antioxidant, and the light stabilizer is benzotriazole ultraviolet absorbent.

Further, the antibacterial master batch is prepared by the following steps: according to the mass parts, 40-50 parts of polyethylene resin, 8-10 parts of pretreated nano carbon black, 15-18 parts of antibacterial component and 5-7 parts of lubricant are uniformly mixed, and then are subjected to refining and extrusion granulation to obtain the antibacterial master batch.

Further, the pretreated nano carbon black is prepared from the following raw materials in parts by mass: 30-45 parts of nano carbon black, 1-3 parts of polyolefin hyperdispersant, 2-4 parts of graft copolymer hyperdispersant and 0.5-1 part of surface synergist;

the pretreated nano carbon black is obtained by carrying out surface treatment on the nano carbon black in an atomizing and spraying manner by using a surface synergist, a polyolefin hyper-dispersant and a graft copolymer hyper-dispersant and drying; the surface synergist is titanate or aluminate.

Further, the antibacterial component is formed by mixing silver-loaded jade powder, copper-loaded montmorillonite powder, nano silver, nano zinc oxide, isothiazolinone and phenol according to the mass ratio of 1.5:1.6:1:1.1:0.5: 0.8.

A preparation method of an antibacterial PE water supply pipe comprises the following steps:

step one, adding the raw materials of the inner layer, the core layer and the outer layer into a three-layer co-extrusion mold, and performing composite extrusion molding at the temperature of 190 plus material and 220 ℃ to obtain a pipe blank;

step two, placing the pipe blank between clamping rollers of two clamping plates of a pipe head polishing mechanism, rotating two hand wheels, driving two threaded rods to rotate respectively by the two hand wheels, driving two moving blocks to slide in corresponding guide rails while the two threaded rods rotate, driving the two clamping plates to move oppositely by the two moving blocks, driving the clamping rollers of the two clamping plates to clamp the pipe blank, at the moment, mutually engaging two driven gears, enabling two conveying rollers to be in close contact with the pipe blank, starting a conveying motor, driving the driving gear to rotate by the conveying motor, driving the driving gear to rotate with the two driven gears, driving the conveying rollers to rotate, driving the pipe blank to move by the conveying rollers, enabling one end of the pipe blank to be inserted into a polishing groove of a polishing seat, starting the polishing motor, driving a connecting part to rotate by the polishing motor, driving the polishing seat to rotate, and, and obtaining the antibacterial PE water supply pipe.

Further, the tube head polishing mechanism comprises a support frame, a connecting plate is fixedly mounted on the support frame, a mounting plate is fixedly mounted at one end of the connecting plate, two clamping plates are movably mounted on one side of the mounting plate, two clamping rollers and a conveying roller are rotatably mounted at the bottoms of the two clamping plates, and the conveying roller is located between the two clamping rollers;

the grinding machine is characterized in that a rotating shaft is rotatably mounted on the supporting frame through a bearing, a rotating plate is fixedly mounted at one end of the rotating shaft, a rotating motor is fixedly mounted on the supporting frame, the end part of an output shaft of the rotating motor is fixedly connected with the other end of the rotating shaft, a plurality of grinding seats are rotatably mounted at one side of the rotating plate and are distributed in an equal-radian annular shape, a grinding groove is formed in one end of each grinding seat, the other end of each grinding seat penetrates through the rotating plate and extends to the other side of the rotating plate, a connecting part is fixedly mounted at the other end of each grinding seat, a through hole is formed in each connecting part and is communicated with the grinding groove, a first belt pulley is fixedly mounted on each connecting part, a plurality of grinding motors are fixedly mounted at the other side of the rotating plate, the plurality of grinding seats correspond to the plurality of grinding motors one to, the output shaft of the polishing motor is connected with the corresponding connecting portion through a first belt pulley, a second belt pulley and a belt transmission, one side of the rotating plate is provided with a cleaning box, the cleaning box is fixedly connected with a support frame through a fixing frame, openings are formed in side walls of two sides of the cleaning box, an arc-shaped notch is formed in the side wall, close to the rotating plate, of the cleaning box, two ends of the arc-shaped notch are communicated with the two openings respectively, a flip cover is installed on the cleaning box, a driving cylinder is fixedly installed on the support frame, a cleaning motor is installed at the end portion of an output rod of the driving cylinder, and a cleaning roller is installed at the end portion of the output shaft of the cleaning motor.

Further, one side fixed mounting of mounting panel has two guide rails, and equal slidable mounting has the movable block on two guide rails, two movable blocks respectively with two splint fixed connection, one side fixed mounting of mounting panel has two mount pads, equal threaded connection has the threaded rod in two mount pads, the one end of two threaded rods rotates with two movable blocks respectively to be connected, the equal fixed mounting of the other end of two threaded rods has the hand wheel, the equal fixed mounting of one end of two clamp rollers has driven gear, two driven gear mesh mutually, one of them fixed mounting has conveying motor on the splint, conveying motor's output shaft end fixed mounting has the driving gear, the driving gear meshes with one of them driven gear mutually.

Further, the working method of the pipe head grinding mechanism specifically comprises the following steps:

the method comprises the following steps that firstly, a pipe blank is placed between clamping rollers of two clamping plates, two hand wheels are rotated, the two hand wheels respectively drive two threaded rods to rotate, the two threaded rods drive two moving blocks to slide in corresponding guide rails while rotating, the two moving blocks drive the two clamping plates to move in opposite directions and drive the clamping rollers of the two clamping plates to clamp the pipe blank, at the moment, the two driven gears are meshed with each other, two conveying rollers are in close contact with the pipe blank, a conveying motor is started, the conveying motor drives a driving gear to rotate, the driving gear drives the two driven gears to rotate and drives the conveying rollers to rotate, the conveying rollers drive the pipe blank to move, one end of the pipe blank is inserted into a polishing groove of a polishing seat, the polishing motor is started, the polishing motor drives a connecting part to rotate and drives the polishing seat;

step two, start the rotating electrical machines, the rotating electrical machines drives the pivot and rotates, the pivot drives the commentaries on classics board and rotates, and drive the seat of polishing and pass the opening and enter into the clearance incasement, start the clearance motor, the clearance motor drives the cleaning roller and rotates, start and drive actuating cylinder, it drives the removal motor and the removal roller removal to drive actuating cylinder, make the cleaning roller insert in the seat of polishing, clear up the seat inside of polishing, the sweeps after the clearance falls into the clearance incasement, open flip, clear up the sweeps in the clearance incasement.

The invention has the beneficial effects that:

the PE water supply pipe adopts a three-layer co-extrusion compounding technology during production, the inner antibacterial layer is a polyethylene constant-pressure layer, the outer antibacterial layer is a high-glossiness protective anti-oxidation layer, different performance requirements of the pipe are met, and the PE water supply pipe is multifunctional;

the invention puts the tubular blank between the clamping rollers of two clamping plates, rotates two hand wheels, the two hand wheels respectively drive two threaded rods to rotate, the two threaded rods drive two moving blocks to slide in corresponding guide rails while rotating, the two moving blocks drive the two clamping plates to move oppositely and drive the clamping rollers of the two clamping plates to clamp the tubular blank, at the moment, the two driven gears are mutually meshed, two conveying rollers are tightly contacted with the tubular blank, a conveying motor is started, the conveying motor drives a driving gear to rotate, the driving gear drives the two driven gears to rotate and drives the conveying rollers to rotate, the conveying rollers drive the tubular blank to move, so that one end of the tubular blank is inserted into a polishing groove of a polishing seat, the polishing motor is started, the polishing motor drives a connecting part to rotate and drives a polishing seat to rotate, and one end of the tubular blank is polished, the tubular blank can be automatically moved, the tube head polishing mechanism can polish quickly and conveniently, can effectively remove burrs at the end part of the tube body, and avoids the damage to human bodies caused by the butt joint of the tubes;

according to the invention, the rotating shaft is driven to rotate by the rotating motor, the rotating shaft drives the rotating plate to rotate and drives the polishing seat to penetrate through the opening to enter the cleaning box, the cleaning motor is started and drives the cleaning roller to rotate, the driving cylinder is started and drives the cleaning motor and the cleaning roller to move, so that the cleaning roller is inserted into the polishing seat to clean the interior of the polishing seat, the cleaned waste scraps fall into the cleaning box, the flip cover is opened, and the waste scraps in the cleaning box are cleaned.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a tube head grinding mechanism of the present invention;

FIG. 2 is a cross-sectional view of a tube head grinding mechanism according to the present invention;

FIG. 3 is a perspective view of a partial structure of the tube head grinding mechanism of the present invention;

fig. 4 is a perspective view of another angle of the partial structure of the tube head grinding mechanism of the present invention.

In the figure: 1. a support frame; 2. a connecting plate; 3. mounting a plate; 4. a splint; 5. a conveying motor; 6. a nip roll; 7. a driven gear; 8. a driving gear; 9. rotating the plate; 10. a rotating electric machine; 11. polishing the base; 111. grinding the groove; 12. cleaning the box; 121. an opening; 122. an arc-shaped notch; 13. a driving cylinder; 14. cleaning the motor; 15. cleaning the roller; 16. a guide rail; 17. a moving block; 18. a threaded rod; 19. a conveying roller; 20. a fixed mount; 21. a mounting seat; 22. polishing the motor; 23. a cover is turned; 24. a rotating shaft; 25. a connecting portion.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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

As shown in fig. 1-4, an antibacterial PE water supply pipe comprises an inner layer, a core layer and an outer layer, which are sequentially arranged from inside to outside;

the inner layer is prepared from the following raw materials in parts by mass: 35 parts of polyethylene resin and 5 parts of antibacterial master batch;

the core layer is prepared from the following raw materials in parts by mass: 40 parts of polyethylene;

the outer layer is prepared from the following raw materials in parts by mass: 25 parts of polyethylene resin and 2 parts of high-glossiness reinforced master batch.

The high-glossiness enhanced master batch is prepared by the following steps:

uniformly mixing 35 parts of polyethylene resin, 30 parts of pretreated nano carbon black, 2 parts of lubricant, 4 parts of processing aid, 1 part of antioxidant and 2 parts of light stabilizer in parts by mass, and then carrying out refining, extrusion and granulation to prepare high-glossiness enhanced master batch; the banburying temperature is 135 ℃, and the granulating temperature is 185 ℃.

The lubricant is polyolefin oligomer, the processing aid is ethylene copolymer or polyethylene graft, the antioxidant is phosphite antioxidant, and the light stabilizer is benzotriazole ultraviolet absorbent.

The antibacterial master batch is prepared by the following steps: according to the mass parts, 40 parts of polyethylene resin, 8 parts of pretreated nano carbon black, 15 parts of antibacterial component and 5 parts of lubricant are uniformly mixed, and then are subjected to refining and extrusion granulation to obtain the antibacterial master batch.

The pretreated nano carbon black is prepared from the following raw materials in parts by mass: 30 parts of nano carbon black, 1 part of polyolefin hyperdispersant, 2 parts of graft copolymer hyperdispersant and 0.5 part of surface synergist;

the pretreated nano carbon black is obtained by carrying out surface treatment on the nano carbon black in an atomizing and spraying manner by using a surface synergist, a polyolefin hyper-dispersant and a graft copolymer hyper-dispersant and drying; the surface synergist is titanate or aluminate.

The antibacterial component is formed by mixing silver-loaded jade powder, copper-loaded montmorillonite powder, nano silver, nano zinc oxide, isothiazolinone and phenol according to the mass ratio of 1.5:1.6:1:1.1:0.5: 0.8.

A preparation method of an antibacterial PE water supply pipe comprises the following steps:

step one, adding raw materials of an inner layer, a core layer and an outer layer into a three-layer co-extrusion die, and performing composite extrusion molding at the temperature of 190 ℃ to obtain a pipe blank;

step two, placing the pipe blank between the clamping rollers 6 of the two clamping plates 4 of the pipe head polishing mechanism, rotating the two hand wheels, driving the two threaded rods 18 to rotate respectively, driving the two moving blocks 17 to slide in the corresponding guide rails 16 while the two threaded rods 18 rotate, driving the two clamping plates 4 to move oppositely by the two moving blocks 17, driving the clamping rollers 6 of the two clamping plates 4 to clamp the pipe blank, at the moment, the two driven gears 7 are meshed with each other, the two conveying rollers 19 are in close contact with the pipe blank, starting the conveying motor 5, driving the driving gear 8 by the conveying motor 5, driving the conveying rollers 19 to rotate by the driving gear 8, driving the conveying rollers 19 to move by the conveying rollers 19, inserting one end of the pipe blank into the polishing groove 111 of the polishing seat 11, starting the polishing motor 22, and driving the connecting part 25 to rotate by the polishing motor 22, and driving the polishing seat 11 to rotate, and polishing one end of the pipe blank to obtain the antibacterial PE water supply pipe; the prepared antibacterial PE water supply pipe is detected according to the QB/T2591-2003 and GB/T18742.2-2002 detection methods and standards, and the antibacterial rate of the antibacterial PPR pipe on escherichia coli is 99.4%, and the antibacterial rate of the antibacterial PPR pipe on staphylococcus aureus is 99.5%.

Example 2

As shown in fig. 1-4, an antibacterial PE water supply pipe comprises an inner layer, a core layer and an outer layer, which are sequentially arranged from inside to outside;

the inner layer is prepared from the following raw materials in parts by mass: 40 parts of polyethylene resin and 8 parts of antibacterial master batch;

the core layer is prepared from the following raw materials in parts by mass: 45 parts of polyethylene;

the outer layer is prepared from the following raw materials in parts by mass: 30 parts of polyethylene resin and 4 parts of high-glossiness reinforced master batch.

The high-glossiness enhanced master batch is prepared by the following steps:

uniformly mixing 45 parts of polyethylene resin, 40 parts of pretreated nano carbon black, 3 parts of lubricant, 6 parts of processing aid, 3 parts of antioxidant and 4 parts of light stabilizer in parts by mass, and then refining, extruding and granulating to obtain high-glossiness reinforced master batch; the banburying temperature is 170 ℃, and the granulating temperature is 205 ℃.

The lubricant is polyolefin oligomer, the processing aid is ethylene copolymer or polyethylene graft, the antioxidant is phosphite antioxidant, and the light stabilizer is benzotriazole ultraviolet absorbent.

The antibacterial master batch is prepared by the following steps: according to the mass parts, 50 parts of polyethylene resin, 10 parts of pretreated nano carbon black, 18 parts of antibacterial component and 7 parts of lubricant are uniformly mixed, and then are subjected to refining and extrusion granulation to obtain the antibacterial master batch.

The pretreated nano carbon black is prepared from the following raw materials in parts by mass: 45 parts of nano carbon black, 3 parts of polyolefin hyperdispersant, 4 parts of graft copolymer hyperdispersant and 1 part of surface synergist;

the pretreated nano carbon black is obtained by carrying out surface treatment on the nano carbon black in an atomizing and spraying manner by using a surface synergist, a polyolefin hyper-dispersant and a graft copolymer hyper-dispersant and drying; the surface synergist is titanate or aluminate.

The antibacterial component is formed by mixing silver-loaded jade powder, copper-loaded montmorillonite powder, nano silver, nano zinc oxide, isothiazolinone and phenol according to the mass ratio of 1.5:1.6:1:1.1:0.5: 0.8.

A preparation method of an antibacterial PE water supply pipe comprises the following steps:

step one, adding raw materials of an inner layer, a core layer and an outer layer into a three-layer co-extrusion die, and performing composite extrusion molding at the temperature of 220 ℃ to obtain a pipe blank;

step two, the same as example 1; the prepared antibacterial PE water supply pipe is detected according to the QB/T2591-2003 and GB/T18742.2-2002 detection methods and standards, and the antibacterial rate of the antibacterial PPR pipe on escherichia coli is 99.5%, and the antibacterial rate of the antibacterial PPR pipe on staphylococcus aureus is 99.6%.

The tube head polishing mechanism comprises a support frame 1, a connecting plate 2 is fixedly mounted on the support frame 1, a mounting plate 3 is fixedly mounted at one end of the connecting plate 2, two clamping plates 4 are movably mounted on one side of the mounting plate 3, two clamping rollers 6 and a conveying roller 19 are rotatably mounted at the bottoms of the two clamping plates 4, and the conveying roller 19 is located between the two clamping rollers 6;

a rotating shaft 24 is rotatably installed on the support frame 1 through a bearing, a rotating plate 9 is fixedly installed at one end of the rotating shaft 24, a rotating motor 10 is fixedly installed on the support frame 1, the end portion of an output shaft of the rotating motor 10 is fixedly connected with the other end of the rotating shaft 24, a plurality of polishing seats 11 are rotatably installed at one side of the rotating plate 9, the polishing seats 11 are distributed in an equal-radian annular shape, a polishing groove 111 is formed at one end of each polishing seat 11, the other end of each polishing seat 11 penetrates through the rotating plate 9 and extends to the other side of the rotating plate 9, a connecting portion 25 is fixedly installed at the other end of each polishing seat 11, a through hole is formed in each connecting portion 25 and communicated with the polishing groove 111, a first belt pulley is fixedly installed on each connecting portion 25, a plurality of polishing motors 22 are fixedly installed at the other side of the rotating plate 9, and the polishing seats 11 correspond to the, fixed mounting has belt pulley two on grinding motor 22's the output shaft, be connected through belt pulley one, belt pulley two and belt drive between grinding motor 22's the output shaft and the connecting portion 25 that corresponds, one side of runner plate 9 is provided with cleaning box 12, cleaning box 12 passes through mount 20 and support frame 1 fixed connection, opening 121 has all been seted up to cleaning box 12's both sides lateral wall, cleaning box 12 has seted up arc notch 122 on being close to one side lateral wall of runner plate 9, the both ends of arc notch 122 are linked together with two openings 121 respectively, install flip 23 on cleaning box 12, fixed mounting drives actuating cylinder 13 on the support frame 1, the output lever tip fixed mounting who drives actuating cylinder 13 has cleaning motor 14, cleaning motor 14's output shaft tip fixed mounting has cleaning roller 15.

One side fixed mounting of mounting panel 3 has two guide rails 16, and equal slidable mounting has movable block 17 on two guide rails 16, and two movable blocks 17 respectively with two splint 4 fixed connection, one side fixed mounting of mounting panel 3 has two mount pads 21, equal threaded connection has threaded rod 18 in two mount pads 21, and the one end of two threaded rod 18 rotates with two movable blocks 17 respectively to be connected, and the equal fixed mounting of the other end of two threaded rod 18 has the hand wheel, and the equal fixed mounting of one end of two clamp rollers 6 has driven gear 7, and two driven gear 7 mesh mutually, one of them fixed mounting has conveying motor 5 on the splint 4, the output shaft tip fixed mounting of conveying motor 5 has driving gear 8, driving gear 8 meshes with one of them driven gear 7 mutually.

The working method of the pipe head grinding mechanism specifically comprises the following steps:

step one, a pipe blank is placed between clamping rollers 6 of two clamping plates 4, two hand wheels are rotated, the two hand wheels respectively drive two threaded rods 18 to rotate, the two threaded rods 18 simultaneously drive two moving blocks 17 to slide in corresponding guide rails 16, the two moving blocks 17 drive the two clamping plates 4 to move oppositely and drive the clamping rollers 6 of the two clamping plates 4 to clamp the pipe blank, at the moment, two driven gears 7 are meshed with each other, two conveying rollers 19 are tightly contacted with the pipe blank, a conveying motor 5 is started, the conveying motor 5 drives a driving gear 8 to rotate, the driving gear 8 drives the two driven gears 7 to rotate and drives the conveying rollers 19 to rotate, the conveying rollers 19 drive the pipe blank to move, one end of the pipe blank is inserted into a polishing groove 111 of a polishing seat 11, the polishing motor 22 is started, the polishing motor 22 drives a connecting part 25 to rotate and drives a polishing seat 11 to rotate, polishing one end of the pipe blank;

step two, the rotating motor 10 is started, the rotating motor 10 drives the rotating shaft 24 to rotate, the rotating shaft 24 drives the rotating plate 9 to rotate, the polishing seat 11 is driven to penetrate through the opening 121 to enter the cleaning box 12, the cleaning motor 14 is started, the cleaning motor 14 drives the cleaning roller 15 to rotate, the driving air cylinder 13 is started, the driving air cylinder 13 drives the cleaning motor 14 and the cleaning roller 15 to move, the cleaning roller 15 is inserted into the polishing seat 11, the interior of the polishing seat 11 is cleaned, the cleaned waste chips fall into the cleaning box 12, the turnover cover 23 is opened, and the waste chips in the cleaning box 12 are cleaned.

The PE water supply pipe adopts a three-layer co-extrusion compounding technology during production, the inner antibacterial layer is a polyethylene constant-pressure layer, the outer antibacterial layer is a high-glossiness protective anti-oxidation layer, different performance requirements of the pipe are met, and the PE water supply pipe is multifunctional;

the invention puts the pipe blank between the clamping rollers 6 of the two clamping plates 4, rotates the two hand wheels, the two hand wheels respectively drive the two threaded rods 18 to rotate, the two threaded rods 18 simultaneously drive the two moving blocks 17 to slide in the corresponding guide rails 16, the two moving blocks 17 drive the two clamping plates 4 to move oppositely and drive the clamping rollers 6 of the two clamping plates 4 to clamp the pipe blank, at the moment, the two driven gears 7 are mutually meshed, the two conveying rollers 19 are tightly contacted with the pipe blank, the conveying motor 5 is started, the conveying motor 5 drives the driving gear 8 to rotate, the driving gear 8 drives the two driven gears 7 to rotate and drives the conveying rollers 19 to rotate, the conveying rollers 19 drive the pipe blank to move, so that one end of the pipe blank is inserted into the polishing groove 111 of the polishing seat 11, the polishing motor 22 is started, the polishing motor 22 drives the connecting part 25 to rotate and drives the polishing seat, the pipe head polishing mechanism can polish the pipe blank quickly and conveniently, can effectively remove burrs at the end part of the pipe blank, and avoids the damage of the pipe to the human body during butt joint;

according to the invention, the rotating shaft 24 is driven to rotate by the rotating motor 10, the rotating shaft 24 drives the rotating plate 9 to rotate and drives the polishing seat 11 to penetrate through the opening 121 and enter the cleaning box 12, the cleaning motor 14 is started, the cleaning motor 14 drives the cleaning roller 15 to rotate, the driving cylinder 13 is started, the driving cylinder 13 drives the cleaning motor 14 and the cleaning roller 15 to move, the cleaning roller 15 is inserted into the polishing seat 11 to clean the interior of the polishing seat 11, the cleaned waste scraps fall into the cleaning box 12, the flip cover 23 is opened to clean the waste scraps in the cleaning box 12, the polishing seat 11 can be driven to rotate by the rotating motor 10, the polishing and the waste scrap cleaning can be carried out by the polishing seat 11 in turn, the polishing and the waste scrap cleaning can be carried out simultaneously, the production efficiency is improved, and the waste scraps can be recovered by the cleaning box 12, so that the working environment is prevented from being polluted.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.