CN217527970U

CN217527970U - Reciprocating screw for extruder

Info

Publication number: CN217527970U
Application number: CN202123437010.6U
Authority: CN
Inventors: 徐文强
Original assignee: Yantai Jun'an Mechanical Equipment Co ltd
Current assignee: Yantai Jun'an Mechanical Equipment Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-10-04
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the technical field of extruders, in particular to a reciprocating screw for an extruder, which not only improves the heat dissipation effect of a reciprocating screw body, but also improves the heat resistance of the reciprocating screw body, reduces the abrasion of the reciprocating screw body in the using process, prolongs the service life of the reciprocating screw body and has high reliability; including reciprocal screw rod body, rotary joint, water pipe and two-way delivery pump, the inside of reciprocal screw rod body is provided with the hollow structure, the left end of reciprocal screw rod body is the opening, the left end of reciprocal screw rod body is connected with rotary joint's output, reciprocal screw rod body rotates and installs on rotary joint, the right-hand member and the rotary joint intercommunication of water pipe, water pipe fixed mounting is on rotary joint, be provided with the valve on the water pipe, the left end and the two-way delivery pump of water pipe are connected, the skin of reciprocal screw rod body is provided with high temperature resistant coating.

Description

Reciprocating screw for extruder

Technical Field

The utility model relates to a technical field of extruder especially relates to a reciprocating screw rod for extruder.

Background

The screw is the heart of the extruder and is a key part of the extruder, and the performance of the screw determines the productivity, plasticizing quality, additive dispersibility, melt temperature, power consumption and the like of one extruder. Is the most important part of the extruder and can directly influence the application range and the production efficiency of the extruder. The plastic can move, pressurize and obtain part of heat from friction in the material barrel through the extreme pressure effect generated by the rotation of the screw, the plastic is mixed and plasticized in the moving process of the material barrel, and the melt in the viscous flow state is extruded to flow through the die to obtain the required shape for molding. In the use process of the existing reciprocating screw in the extruder, the existing reciprocating screw works in a high-temperature environment for a long time without cooling and radiating measures, so that the existing reciprocating screw is fast in abrasion, short in service life and poor in reliability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a not only improved the radiating effect of reciprocal screw rod body, improved the heat resistance of reciprocal screw rod body moreover, reduced the wearing and tearing of reciprocal screw rod body in the use, improved the life of reciprocal screw rod body, the high reciprocal screw rod who is used for the extruder of reliability.

The utility model discloses a reciprocating screw for extruder, including reciprocating screw body, rotary joint, water pipe and two-way delivery pump, the inside of reciprocating screw body is provided with hollow structure, the left end of reciprocating screw body is the opening, the left end of reciprocating screw body is connected with rotary joint's output, reciprocating screw body rotates and installs on rotary joint, the right-hand member and the rotary joint intercommunication of water pipe, the water pipe is fixed to be installed on rotary joint, be provided with the valve on the water pipe, the left end of water pipe is connected with two-way delivery pump, the skin of reciprocating screw body is provided with high temperature resistant coating, the high temperature resistant coating of reciprocating screw body is formed by the spraying of spraying mechanism; the spraying mechanism comprises a bottom plate, a supporting frame, a sliding block, a spray gun, two groups of rotating shafts, two groups of fixing frames, a driving device and a feeding device, wherein the supporting frame is fixedly arranged at the upper end of the bottom plate, the sliding block is arranged at the upper part of the supporting frame in a left-right sliding manner, the spray gun is fixedly arranged at the lower end of the sliding block, the input end of the spray gun is connected with the output end of the feeding device, the feeding device is fixedly arranged at the upper end of the bottom plate and used for providing coating for the spray gun, the two groups of rotating shafts are rotatably arranged on the supporting frame, the two groups of fixing frames are respectively and fixedly arranged on the two groups of rotating shafts, clamping devices are respectively arranged on the two groups of fixing frames, the two groups of clamping devices are arranged on the two groups of fixing frames in a left-right mirror image manner, the driving device is arranged on the supporting frame, and the driving device is used for driving the rotation of the two groups of rotating shafts and the left-right movement of the sliding block; when the reciprocating screw body is used, firstly, the input end of the bidirectional conveying pump is connected with external cooling water, then the bidirectional conveying pump is opened, the external cooling water enters the hollow core of the reciprocating screw body through the bidirectional conveying pump and the water pipe via the rotary joint, then the valve on the water pipe is closed, the cooling water in the hollow core of the reciprocating screw body plays a role in cooling the reciprocating screw body, when the temperature of the cooling water in the hollow core of the reciprocating screw body rises, the valve on the water pipe is opened again, then the bidirectional conveying pump is opened again, the water heated in the reciprocating screw body is discharged into the external cooling water again through the rotary joint, the water pipe and the bidirectional conveying pump in sequence to cool the reciprocating screw body, then the external low-temperature cooling water enters the hollow core of the reciprocating screw body through the water pipe and the reciprocating screw body through the bidirectional conveying pump to cool the reciprocating screw body, the heat dissipation effect of the reciprocating screw body is improved through the cooling water, the temperature of the reciprocating screw body is reduced, the heat resistance of the reciprocating screw body is improved through the high-temperature-resistant coating outside the reciprocating screw body, the service life of the reciprocating screw body is prolonged, and the abrasion of the reciprocating screw body is reduced in the reciprocating screw body in the use process; when the high-temperature-resistant coating is sprayed on the outer layer of the reciprocating screw body, the left part and the right part of the reciprocating screw body are clamped and fixed through the clamping devices on the two groups of fixing frames respectively, then the coating is added into the feeding device, then the feeding device is opened, the high-temperature-resistant coating enters the spray gun through the feeding device, then the high-temperature-resistant coating is sprayed on the upper end of the reciprocating screw body through the spray gun, then the driving device is opened, the sliding block moves leftwards and rightwards, the sliding block drives the spray gun to move leftwards and rightwards, the spray gun uniformly sprays the coating on the left part and the right part of the reciprocating screw body in the process of moving leftwards and rightwards, meanwhile, the driving device drives the two groups of rotating shafts to rotate, the two groups of rotating shafts enable the two groups of clamping devices to drive the reciprocating screw body to rotate through the two groups of fixing frames, the reciprocating screw body enables the coating to be uniformly sprayed on the upper part and the lower part of the reciprocating screw body in the rotating process, the coating can be uniformly sprayed on the surface of the reciprocating screw body, spraying of the reciprocating screw body is facilitated, and the reliability and the practicability are improved.

Preferably, the driving device comprises a reciprocating screw rod, a first motor, a first chain wheel, a second chain wheel and a chain, the reciprocating screw rod is rotatably mounted on the supporting frame and is in threaded connection with the sliding block, the left end of the reciprocating screw rod is connected with the output end of the first motor, the first motor is fixedly mounted on the supporting frame, the first chain wheel is fixedly mounted at the right end of the reciprocating screw rod, the second chain wheel is fixedly mounted at the right end of the right rotating shaft, the first chain wheel and the second chain wheel are in transmission connection through the chain, and the diameter of the first chain wheel is smaller than that of the second chain wheel; open first motor, first motor drives reciprocal lead screw rotatory, rotatory reciprocal lead screw drives the slider and removes, rotatory reciprocal lead screw drives first sprocket rotation simultaneously, it is rotatory that first sprocket passes through the chain and drives the second sprocket, the second sprocket drives the right side pivot rotatory, the pivot on right side through the fixed frame on right side drive two sets of clamping device with reciprocal screw body rotatory can, made things convenient for about the rotation of reciprocal screw body and slider, the convenience in the use has been improved.

Preferably, the feeding device comprises a support, a material cylinder, a second motor, a rotating shaft, a plurality of groups of stirring rods, a high-pressure air pump, a material discharging pipe, a hose and a material feeding pipe, wherein the support is fixedly installed at the upper end of the reciprocating screw rod body, the material cylinder is fixedly installed on the support, a cavity is arranged inside the material cylinder, the second motor is fixedly installed at the upper end of the material cylinder, the rotating shaft is rotatably installed on the material cylinder, the upper end of the rotating shaft is connected with the output end of the second motor, the plurality of groups of stirring rods are installed at the lower part of the rotating shaft in a staggered manner, all the groups of stirring rods are located in the cavity of the material cylinder, the high-pressure air pump is fixedly installed at the upper part of the material cylinder, the output end of the material discharging pipe is communicated with the lower part of the cavity of the material cylinder, the output end of the discharging pipe is connected with the input end of the hose, the output end of the hose is connected with the input end of the spray gun, the material feeding pipe is fixedly installed at the upper part of the material cylinder, and the material feeding pipe is provided with a valve; in adding the cavity of feed cylinder with coating and diluent through the inlet pipe, later open the second motor, the second motor drives the multiunit stirring rod rotation through the rotation axis, rotatory multiunit stirring rod makes the abundant mixture of coating and diluent, and prevented that coating from deposiing in the feed cylinder, later close the valve on the inlet pipe, then open high compression pump, make in the cavity of highly compressed gas entering feed cylinder, highly compressed gas passes through discharging pipe and hose with the coating in the feed cylinder cavity and extrudees the spray gun, later coating via the spray gun blowout can, prevented the sediment of coating, make coating can be even mix with the diluent, the convenience has been improved.

Preferably, the clamping device comprises two groups of telescopic rods, a fixed block, two groups of clamping blocks, a first screw and a second screw, one ends of the two groups of telescopic rods are fixedly arranged on the fixed frame, the fixed block is fixedly arranged at the other ends of the two groups of telescopic rods, the two groups of clamping blocks are vertically and slidably arranged on the fixed block, the first screw is rotatably arranged on the fixed block, the upper part and the lower part of the first screw are provided with external threads with opposite rotation directions, the two groups of clamping blocks are respectively screwed with the upper part and the lower part of the first screw, the two groups of clamping blocks are respectively provided with clamping blocks, the second screw is screwed with the fixed frame, and the other end of the second screw is rotatably arranged on the fixed block; rotate two sets of second screws, two sets of second screws drive two sets of fixed blocks and are close to each other, then place the left and right sides of reciprocal screw rod body between two sets of grip blocks of left and right sides respectively, later rotate two sets of first screws, two sets of first screws drive two sets of grip blocks of left and right sides respectively and are close to each other, to the left and right sides two sets of grip blocks respectively with the reciprocal screw rod body about both sides press from both sides tightly can, because the distance between two sets of grip blocks can be adjusted, so it can the reciprocal screw rod body of the different diameters of centre gripping, because the distance between two sets of fixed blocks can be adjusted, so it can the reciprocal screw rod body of the different length of centre gripping, the limitation is low, the centre gripping to reciprocal screw rod body has been made things convenient for, the convenience is improved.

Preferably, the motor further comprises a reinforcing plate, and the reinforcing plate is fixedly arranged on the first motor; through the arrangement, the firmness of the first motor in the using process is improved.

Preferably, the charging barrel is provided with an access hole, and a sealing cover is arranged outside the access hole; through the arrangement, the overhaul and the maintenance of equipment in the charging barrel are facilitated, and the convenience is improved.

Preferably, handles are arranged on the two groups of second screws; through the arrangement, the rotation of the two groups of second screws is facilitated, and the convenience in the use process is improved.

Compared with the prior art, the beneficial effects of the utility model are that: when the reciprocating screw body is used, firstly, the input end of the bidirectional conveying pump is connected with external cooling water, then the bidirectional conveying pump is opened, the external cooling water enters the hollow core of the reciprocating screw body through the bidirectional conveying pump and the water pipe via the rotary joint, then the valve on the water pipe is closed, the cooling water in the hollow core of the reciprocating screw body plays a role in cooling the reciprocating screw body, when the temperature of the cooling water in the hollow core of the reciprocating screw body rises, the valve on the water pipe is opened again, then the bidirectional conveying pump is opened again, the water heated in the reciprocating screw body is discharged into the external cooling water again through the rotary joint, the water pipe and the bidirectional conveying pump in sequence to cool the reciprocating screw body, then the external low-temperature cooling water enters the hollow core of the reciprocating screw body through the water pipe and the reciprocating screw body through the bidirectional conveying pump to cool the reciprocating screw body, the heat dissipation effect of the reciprocating screw body is improved through the cooling water, the temperature of the reciprocating screw body is reduced, the heat resistance of the reciprocating screw body is improved through the high-temperature-resistant coating outside the reciprocating screw body, the service life of the reciprocating screw body is prolonged, and the abrasion of the reciprocating screw body is reduced in the reciprocating screw body in the use process; when the high-temperature-resistant coating is sprayed on the outer layer of the reciprocating screw body, the left part and the right part of the reciprocating screw body are clamped and fixed through the clamping devices on the two groups of fixing frames respectively, then the coating is added into the feeding device, then the feeding device is opened, the high-temperature-resistant coating enters the spray gun through the feeding device, then the high-temperature-resistant coating is sprayed on the upper end of the reciprocating screw body through the spray gun, then the driving device is opened, the sliding block moves leftwards and rightwards, the sliding block drives the spray gun to move leftwards and rightwards, the spray gun uniformly sprays the coating on the left part and the right part of the reciprocating screw body in the process of moving leftwards and rightwards, meanwhile, the driving device drives the two groups of rotating shafts to rotate, the two groups of rotating shafts enable the two groups of clamping devices to drive the reciprocating screw body to rotate through the two groups of fixing frames, the reciprocating screw body enables the coating to be uniformly sprayed on the upper part and the lower part of the reciprocating screw body in the rotating process, the coating can be uniformly sprayed on the surface of the reciprocating screw body, spraying of the reciprocating screw body is facilitated, and the reliability and the practicability are improved.

Drawings

FIG. 1 is a schematic view of a spray mechanism;

FIG. 2 is a schematic structural view of a reciprocating screw body, a water pipe, a rotary joint and the like;

fig. 3 is a schematic structural view of the fixing frame, the fixing block, the second screw, and the like;

FIG. 4 is a schematic structural view of a cylinder, a rotary shaft, a stirring rod and the like;

in the drawings, the reference numbers: 1. a reciprocating screw body; 2. a rotary joint; 3. a water pipe; 4. a bidirectional delivery pump; 5. a base plate; 6. supporting a frame; 7. a slider; 8. a spray gun; 9. a rotating shaft; 10. a fixing frame; 11. a reciprocating screw rod; 12. a first motor; 13. a first sprocket; 14. a second sprocket; 15. a chain; 16. a support; 17. a charging barrel; 18. a second motor; 19. a rotating shaft; 20. a stirring rod; 21. a high pressure air pump; 22. a discharge pipe; 23. a hose; 24. a feeding pipe; 25. a telescopic rod; 26. a fixed block; 27. a clamping block; 28. a first screw; 29. a second screw; 30. a reinforcing plate.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The inner part of the reciprocating screw body 1 is provided with a hollow structure, the left end of the reciprocating screw body 1 is provided with an opening, the left end of the reciprocating screw body 1 is connected with the output end of the rotary joint 2, the reciprocating screw body 1 is rotatably arranged on the rotary joint 2, the right end of the water pipe 3 is communicated with the rotary joint 2, the water pipe 3 is fixedly arranged on the rotary joint 2, the water pipe 3 is provided with a valve, the left end of the water pipe 3 is connected with the bidirectional conveying pump 4, the outer layer of the reciprocating screw body 1 is provided with a high-temperature-resistant coating, and the high-temperature-resistant coating of the reciprocating screw body 1 is formed by spraying of a spraying mechanism; the spraying mechanism comprises a bottom plate 5, a support frame 6, a sliding block 7, a spray gun 8, two sets of rotating shafts 9, two sets of fixing frames 10, a driving device and a feeding device, the support frame 6 is fixedly installed at the upper end of the bottom plate 5, the sliding block 7 is installed at the upper part of the support frame 6 in a left-right sliding mode, the spray gun 8 is fixedly installed at the lower end of the sliding block 7, the input end of the spray gun 8 is connected with the output end of the feeding device, the feeding device is fixedly installed at the upper end of the bottom plate 5 and used for providing coating for the spray gun 8, the two sets of rotating shafts 9 are both rotatably installed on the support frame 6, the two sets of fixing frames 10 are respectively and fixedly installed on the two sets of rotating shafts 9, clamping devices are respectively arranged on the two sets of fixing frames 10 in a left-right mirror mode, the driving device is installed on the support frame 6 and a left-right mirror image installation of the two sets of clamping devices, the driving device is installed on the support frame 6 and is used for driving the rotation of the two sets of the rotating shafts 9 and the sliding block 7, the driving device comprises a reciprocating lead screw 11, a first motor 12, a first chain wheel 13, a second chain wheel 14 and a second chain wheel 15, the reciprocating lead screw 11 is installed on the support frame 6, the reciprocating screw 17 is installed on the high-pressure feed cylinder 17, the high-pressure feed cylinder 16 and the high-pressure feed cylinder 16, the internal of the charging barrel 17 is provided with a cavity, a second motor 18 is fixedly arranged at the upper end of the charging barrel 17, a rotating shaft 19 is rotatably arranged on the charging barrel 17, the upper end of the rotating shaft 19 is connected with the output end of the second motor 18, a plurality of groups of stirring rods 20 are arranged at the lower part of the rotating shaft 19 in a staggered manner, the groups of stirring rods 20 are all positioned in the cavity of the charging barrel 17, a high-pressure air pump 21 is fixedly arranged at the upper part of the charging barrel 17, the output end of the high-pressure air pump 21 is positioned in the cavity of the charging barrel 17, the input end of a discharge pipe 22 is communicated with the lower part of the cavity of the charging barrel 17, the output end of the discharge pipe 22 is connected with the input end of a hose 23, the output end of the hose 23 is connected with the input end of a spray gun 8, a feed pipe 24 is fixedly arranged at the upper part of the charging barrel 17, a valve is arranged on the feed pipe 24, the clamping device comprises two groups of telescopic rods 25, a fixed block 26, two groups of clamping blocks 27, a first screw rod 28 is rotatably arranged on the fixed block 26, the fixed with the fixed block 28, the two groups of screw rod parts of the fixed block 28, the fixed block 27 are arranged at the upper and the lower part of the fixed block 30, the fixed with the second screw rod 29, the fixed block 30 is arranged on the fixed block 30, and the second screw rod 29; when the reciprocating screw body 1 is used, firstly, the input end of the bidirectional conveying pump 4 is connected with external cooling water, then the bidirectional conveying pump 4 is opened, the external cooling water enters the hollow core of the reciprocating screw body 1 through the bidirectional conveying pump 4 and the water pipe 3 via the rotary joint 2, then the valve on the water pipe 3 is closed, the cooling water in the hollow core of the reciprocating screw body 1 plays a role in cooling the reciprocating screw body 1, when the temperature of the cooling water in the hollow core of the reciprocating screw body 1 is increased, the valve on the water pipe 3 is opened again, then the bidirectional conveying pump 4 is opened again, the water heated in the reciprocating screw body 1 is discharged into the external cooling water again through the rotary joint 2, the water pipe 3 and the bidirectional conveying pump 4, the external low-temperature cooling water enters the hollow core of the reciprocating screw body 1 through the water pipe 3 and the reciprocating screw body 1 through the bidirectional conveying pump 4, the cooling water reduces the temperature of the reciprocating screw body 1, improves the heat dissipation effect of the reciprocating screw body 1, reduces the temperature of the reciprocating screw body 1, the temperature of the reciprocating screw body 1 is reduced, the high-temperature-resistant reciprocating screw body 1 is improved, and the service life of the reciprocating screw body 1 is prolonged; when spraying a high-temperature-resistant coating on the outer layer of the reciprocating screw body 1, firstly, the left part and the right part of the reciprocating screw body 1 are respectively clamped and fixed by two groups of clamping devices on the fixing frames 10, then, the coating and the diluent are added into the cavity of the charging barrel 17 through the feeding pipe 24, then, the second motor 18 is opened, the second motor 18 drives the multiple groups of stirring rods 20 to rotate through the rotating shaft 19, the rotating multiple groups of stirring rods 20 enable the coating and the diluent to be fully mixed and prevent the coating from precipitating in the charging barrel 17, then, the valve on the feeding pipe 24 is closed, then, the high-pressure air pump 21 is opened to enable high-pressure air to enter the cavity of the charging barrel 17, the high-pressure air extrudes the coating in the cavity of the charging barrel 17 into the spray gun 8 through the discharging pipe 22 and the hose 23, and then the coating is sprayed on the upper end of the reciprocating screw body 1 through the spray gun 8, then the first motor 12 is turned on, the first motor 12 drives the reciprocating screw rod 11 to rotate, the rotating reciprocating screw rod 11 drives the sliding block 7 to move left and right, the rotating reciprocating screw rod 11 drives the first chain wheel 13 to rotate, the first chain wheel 13 drives the second chain wheel 14 to rotate through the chain 15, the second chain wheel 14 drives the right rotating shaft 9 to rotate, the right rotating shaft 9 drives the two groups of clamping devices and the reciprocating screw rod body 1 to rotate through the fixed frame 10 on the right side, the spray gun 8 can move left and right through the left and right movement of the sliding block 7, so that the coating is uniformly sprayed to the upper end of the reciprocating screw rod body 1 through the spray gun 8, the coating is uniformly sprayed on the upper part and the lower part of the reciprocating screw rod body 1 through the rotation of the reciprocating screw rod body 1, the spraying to the reciprocating screw rod body 1 is convenient, and the spraying effect is good.

As shown in figures 1 to 4, when the reciprocating screw rod body 1 of the utility model is in use, firstly, the input end of the bidirectional delivery pump 4 is connected with external cooling water, then the bidirectional delivery pump 4 is opened, the external cooling water enters the hollow core of the reciprocating screw rod body 1 through the bidirectional delivery pump 4 and the water pipe 3 via the rotary joint 2, then the valve on the water pipe 3 is closed, the cooling water in the hollow core of the reciprocating screw rod body 1 has the function of cooling the reciprocating screw rod body 1, when the temperature of the cooling water in the hollow core of the reciprocating screw body 1 rises, the valve on the water pipe 3 is opened again, then the bidirectional conveying pump 4 is opened again, the water with the temperature raised in the reciprocating screw body 1 is discharged into the external cooling water again through the rotary joint 2, the water pipe 3 and the bidirectional conveying pump 4 in sequence for cooling, and then the external low-temperature cooling water enters the hollow core of the reciprocating screw body 1 through the water pipe 3 and the reciprocating screw body 1 through the bidirectional conveying pump 4 to cool the reciprocating screw body 1; when spraying a high-temperature-resistant coating on the outer layer of the reciprocating screw body 1, firstly, the left part and the right part of the reciprocating screw body 1 are respectively clamped and fixed by two groups of clamping devices on the fixing frames 10, then, the coating and the diluent are added into the cavity of the charging barrel 17 through the feeding pipe 24, then, the second motor 18 is opened, the second motor 18 drives the multiple groups of stirring rods 20 to rotate through the rotating shaft 19, the rotating multiple groups of stirring rods 20 enable the coating and the diluent to be fully mixed and prevent the coating from precipitating in the charging barrel 17, then, the valve on the feeding pipe 24 is closed, then, the high-pressure air pump 21 is opened to enable high-pressure air to enter the cavity of the charging barrel 17, and the high-pressure air extrudes the coating in the cavity of the charging barrel 17 into the spray gun 8 through the discharging pipe 22 and the hose 23, then the coating is sprayed to the upper end of the reciprocating screw body 1 through the spray gun 8, then the first motor 12 is turned on, the first motor 12 drives the reciprocating screw rod 11 to rotate, the rotating reciprocating screw rod 11 drives the sliding block 7 to move left and right, meanwhile, the rotating reciprocating screw rod 11 drives the first chain wheel 13 to rotate, the first chain wheel 13 drives the second chain wheel 14 to rotate through the chain 15, the second chain wheel 14 drives the right rotating shaft 9 to rotate, the rotating shaft 9 on the right side drives the two groups of clamping devices and the reciprocating screw body 1 to rotate through the fixing frame 10 on the right side, the spray gun 8 can be moved left and right through the left and right movement of the sliding block 7, the coating is uniformly sprayed to the upper end of the reciprocating screw body 1 through the spray gun 8, and the coating is uniformly sprayed on the upper portion and the lower portion of the reciprocating screw body 1 through the rotation of the reciprocating screw body 1.

The installation mode, the connection mode or the arrangement mode of the reciprocating screw rod for the extruder of the utility model are common mechanical modes, and the reciprocating screw rod can be implemented as long as the beneficial effects can be achieved; the utility model discloses a rotary joint 2, two-way delivery pump 4, spray gun 8, reciprocal lead screw 11, chain 15, high compression pump 21, telescopic link 25 and grip block 27 for the reciprocal screw rod of extruder purchase on the market, this industry technical staff only need according to its subsidiary service instruction install and operate can, and need not the technical staff in the field and pay out creative work.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The reciprocating screw for the extruder is characterized by comprising a reciprocating screw body (1), a rotary joint (2), a water pipe (3) and a bidirectional conveying pump (4), wherein a hollow structure is arranged inside the reciprocating screw body (1), the left end of the reciprocating screw body (1) is an opening, the left end of the reciprocating screw body (1) is connected with the output end of the rotary joint (2), the reciprocating screw body (1) is rotatably installed on the rotary joint (2), the right end of the water pipe (3) is communicated with the rotary joint (2), the water pipe (3) is fixedly installed on the rotary joint (2), a valve is arranged on the water pipe (3), the left end of the water pipe (3) is connected with the bidirectional conveying pump (4), a high-temperature-resistant coating is arranged on the outer layer of the reciprocating screw body (1), and the high-temperature-resistant coating of the reciprocating screw body (1) is formed by spraying of a spraying mechanism; the spraying mechanism comprises a bottom plate (5), a support frame (6), a sliding block (7), a spray gun (8), two sets of rotating shafts (9), two sets of fixed frames (10), a driving device and a feeding device, wherein the support frame (6) is fixedly arranged at the upper end of the bottom plate (5), the sliding block (7) is arranged on the upper portion of the support frame (6) in a left-right sliding mode, the spray gun (8) is fixedly arranged at the lower end of the sliding block (7), the input end of the spray gun (8) is connected with the output end of the feeding device, the feeding device is fixedly arranged at the upper end of the bottom plate (5), the feeding device is used for providing coating for the spray gun (8), the two sets of rotating shafts (9) are rotatably arranged on the support frame (6), the two sets of fixed frames (10) are fixedly arranged on the two sets of rotating shafts (9), clamping devices are arranged on the two sets of fixed frames (10), mirror images of the two sets of clamping devices are arranged on the two sets of fixed frames (10) in a left-right mode, the driving device is arranged on the support frame (6), and the driving device is used for driving rotation of the two sets of rotating shafts (9) and left-right movement of the sliding block (7) to drive.

2. The reciprocating screw for an extruder according to claim 1, wherein the driving device comprises a reciprocating screw (11), a first motor (12), a first chain wheel (13), a second chain wheel (14) and a chain (15), the reciprocating screw (11) is rotatably mounted on the support frame (6), the reciprocating screw (11) is screwed with the slider (7), the left end of the reciprocating screw (11) is connected with the output end of the first motor (12), the first motor (12) is fixedly mounted on the support frame (6), the first chain wheel (13) is fixedly mounted at the right end of the reciprocating screw (11), the second chain wheel (14) is fixedly mounted at the right end of the right rotating shaft (9), the first chain wheel (13) and the second chain wheel (14) are in transmission connection through the chain (15), and the diameter of the first chain wheel (13) is smaller than that of the second chain wheel (14).

3. The reciprocating screw of claim 1, wherein the feeding device comprises a support (16), a material barrel (17), a second motor (18), a rotating shaft (19), a plurality of sets of stirring rods (20), a high-pressure air pump (21), a discharging pipe (22), a hose (23) and a feeding pipe (24), the support (16) is fixedly arranged at the upper end of the reciprocating screw body (1), the material barrel (17) is fixedly arranged on the support (16), a chamber is arranged inside the material barrel (17), the second motor (18) is fixedly arranged at the upper end of the material barrel (17), the rotating shaft (19) is rotatably arranged on the material barrel (17), the upper end of the rotating shaft (19) is connected with the output end of the second motor (18), the plurality of sets of stirring rods (20) are arranged at the lower part of the rotating shaft (19) in a staggered manner, the plurality of sets of stirring rods (20) are all positioned in the chamber of the material barrel (17), the high-pressure air pump (21) is fixedly arranged at the upper part of the material barrel (17), the output end of the high-pressure material barrel (21) is positioned in the chamber of the material barrel (17), the input end of the discharging pipe (22) is communicated with the chamber of the discharging pipe (17), the discharging pipe (22), the output end of the hose (23) is connected with the output end of the hose (24), and the hose (23) is connected with the input end of the hose (17), the feeding pipe (24) is provided with a valve.

4. The reciprocating screw for an extruder according to claim 1, wherein the clamping device comprises two sets of telescopic rods (25), a fixed block (26), two sets of clamping blocks (27), a first screw (28) and a second screw (29), one end of each of the two sets of telescopic rods (25) is fixedly mounted on the fixed frame (10), the fixed block (26) is fixedly mounted at the other end of each of the two sets of telescopic rods (25), the two sets of clamping blocks (27) are vertically slidably mounted on the fixed block (26), the first screw (28) is rotatably mounted on the fixed block (26), the upper and lower portions of the first screw (28) are provided with external threads with opposite rotation directions, the two sets of clamping blocks (27) are respectively screwed with the upper and lower portions of the first screw (28), the two sets of clamping blocks (27) are provided with clamping blocks, the second screw (29) is screwed with the fixed frame (10), and the other end of the second screw (29) is rotatably mounted on the fixed block (26).

5. A reciprocating screw for an extruder according to claim 2, further comprising a reinforcing plate (30), the reinforcing plate (30) being fixedly mounted on the first motor (12).

6. A reciprocating screw for an extruder according to claim 3, wherein the barrel (17) is provided with an access opening, outside which a sealing cover is provided.

7. A reciprocating screw for extruders, as per claim 4, characterized by the fact that both sets of second screws (29) are provided with handles.