阅读说明：本技术 耐水解低收缩mpp松套管专用料制备工艺及生产装置 (Preparation process and production device of hydrolysis-resistant low-shrinkage MPP loose tube special material ) 是由 王君 于 2021-07-16 设计创作，主要内容包括：本发明涉及光纤光缆领域,具体是耐水解低收缩MPP松套管专用料制备工艺及生产装置；包括挤出机本体和电机；所述挤出机本体的套筒顶部中端位置开设有排气孔；所述排气孔的内部设有连接板；所述连接板的表面固连有排气管；所述挤出机本体的顶部于排气管位置固连有固定块；所述固定块的内部设有电机；所述电机的输出轴于排气管的内部位置固连有螺旋柱；通过本发明有效的实现了对排气管的内部进行清理,使得因溢料问题而堵塞的排气管内部重新导通,便于排气管的的内部长时间保持导通状态,减少专用料生产过程中,胶条的内部大量气孔问题,保证生产装置的长时间可持续正常运转。(The invention relates to the field of optical fiber cables, in particular to a preparation process and a production device of a special material for a hydrolysis-resistant low-shrinkage MPP loose tube; comprises an extruder body and a motor; the middle end of the top of the sleeve of the extruder body is provided with an exhaust hole; a connecting plate is arranged inside the exhaust hole; the surface of the connecting plate is fixedly connected with an exhaust pipe; the top of the extruder body is fixedly connected with a fixed block at the position of the exhaust pipe; a motor is arranged inside the fixed block; the output shaft of the motor is fixedly connected with a spiral column at the inner position of the exhaust pipe; the cleaning device effectively cleans the interior of the exhaust pipe, ensures that the interior of the exhaust pipe blocked due to the flash problem is conducted again, is convenient for keeping the interior of the exhaust pipe in a conducting state for a long time, reduces the problem of a large number of air holes in the interior of the rubber strip in the production process of the special material, and ensures the long-time sustainable normal operation of the production device.)

1. Hydrolysis-resistant low shrink MPP pine sleeve pipe special-purpose material apparatus for producing, its characterized in that: comprises an extruder body (1) and a motor (2); the middle end of the top of the sleeve of the extruder body (1) is provided with an exhaust hole; a connecting plate (3) is arranged inside the exhaust hole; the surface of the connecting plate (3) is fixedly connected with an exhaust pipe (4); the top of the extruder body (1) is fixedly connected with a fixed block (5) at the position of the exhaust pipe (4); a motor (2) is arranged inside the fixed block (5); and the output shaft of the motor (2) is fixedly connected with a spiral column (7) in the exhaust pipe (4).

2. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 1, which is characterized in that: the inner surface of the exhaust pipe (4) is provided with a sliding groove at the position close to the top of the exhaust pipe (4); a sliding block (8) is connected inside the sliding groove in a sliding manner; a first spring (9) is fixedly connected between the sliding block (8) and the top surface of the sliding groove; the top surface of the chute is fixedly connected with a control switch (10).

3. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 2, which is characterized in that: a guide rail (11) is fixedly connected inside the fixed block (5); a sliding block (12) is connected inside the guide rail (11) in a sliding manner; the bottom of the sliding block (12) is fixedly connected with a mounting seat (13); the motor (2) is arranged in the mounting seat (13), and the mounting seat (13) is fixedly connected with the top surface of the exhaust pipe (4); the surface of the extruder body (1) is provided with an adjusting groove; the inner part of the adjusting groove is connected with a connecting plate (3) in a sliding way.

4. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 3, which is characterized in that: a cleaning groove (6) is formed in the exhaust pipe (4); a moving block (14) is connected inside the cleaning groove (6) in a sliding manner; a movable groove is formed in the movable block (14), and the interior of the movable groove is connected with an air source through a pipeline; a cleaning block (15) is connected inside the movable groove in a sliding manner; the side face of the cleaning block (15) opposite to one side of the spiral column (7) is designed into a threaded structure; the top of the moving block (14) is fixedly connected with a second spring (16).

5. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 4, which is characterized in that: the notch of clearance groove (6) has linked firmly sealed piece (17), and sealed piece (17) are folding seal structure.

6. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 5, which is characterized in that: the bottom of the cleaning groove (6) is fixedly connected with a telescopic rod (18), and the telescopic rod (18) is communicated with the inside of the cleaning groove (6) in a one-way mode through a connecting pipe; a one-way valve is arranged between the bottom of the cleaning tank (6) and the outside; the surface of the sealing block (17) is provided with uniformly arranged gas injection holes (19).

7. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 6, which is characterized in that: the sealing block (17) comprises a sealing sub-plate (20) and an elastic sheet (21); a plurality of sealing sub-plates (20) are hinged with each other and form an integral sealing block (17); an elastic sheet (21) is fixedly connected between two adjacent sealing plates relative to the side surface of one side of the spiral column (7); the surface of the elastic sheet (21) is provided with small holes (22).

8. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 7, which is characterized in that: a lantern ring (23) is rotatably connected to the surface of the spiral column (7) close to the top of the spiral column (7); the number of the lantern rings (23) is two; one of the collars (23) is connected with an inlet pipe (24); an outlet pipe (25) is connected with the other lantern ring (23); and a guide hole (26) is formed in the spiral column (7).

9. The special production device for the hydrolysis-resistant low-shrinkage MPP loose tube as claimed in claim 8, wherein the production device comprises: the inner part of the guide hole (26) is hinged with a rotating plate (27) which is uniformly arranged; the surfaces of the rotating plates (27) are fixedly connected with third springs (28); the surfaces of the rotating plates (27) are all fixed with vibration blocks (29).

10. The preparation process of the hydrolysis-resistant low-shrinkage MPP loose tube special material is characterized by comprising the following steps of: the preparation process is suitable for the production device of the hydrolysis-resistant low-shrinkage MPP loose tube special material as set forth in any one of claims 1-9, and comprises the following preparation steps:

s1: firstly, respectively weighing 50-60 parts of polypropylene, 10-15 parts of paraffin, 3-5 parts of antioxidant, 1-2 parts of heat stabilizer, 3-4 parts of titanate coupling agent, 2-3 parts of lubricant, 0.5-1 part of anti-coagulating agent and 5-10 parts of light calcium carbonate according to parts by weight;

s2: then sequentially adding the raw materials weighed in the S1 into a production device, fully mixing, extruding by a double screw in the production device to form an adhesive tape, and then cutting off the adhesive tape to obtain a special material in a small particle state;

s3: when carrying out the raw materials and extruding, motor (2) rotate, can make spiral post (7) rotate for in exhaust pipe (4) normal exhaust process, the inside overflowed material of exhaust pipe (4) is gone back into the inside of leading-in extruder body (1), makes exhaust pipe (4) normal exhaust work for a long time.

Technical Field

The invention relates to the field of optical fiber cables, in particular to a preparation process and a production device of a special material for a hydrolysis-resistant low-shrinkage MPP loose tube.

Background

The loose tube is a tube made of polypropylene or polyethylene terephthalate, which can loosely place optical fibers in the optical cable and protect the optical fibers from the influence of internal stress and external side pressure, and MPP special materials are needed in the production of the loose tube.

According to CN103205057A, the special material for the modified polypropylene loose tube can provide good processing stability at a wide outlet speed, and has excellent long-term heat resistance, pressure resistance and oil paste resistance; the molecular structure is changed by the rheological property and crystallinity of the material, so that the contractility is reduced, and the extra length of the optical fiber is stably controlled; compared with PBT, the PBT has good hydrolytic stability, does not need drying before extrusion, is convenient to use and saves cost.

But among the prior art, before carrying out the material strip surely cut, need the stable bar form of material strip to derive, but because extrude the in-process, the inside of melt produces gas easily, these gas wraps up in the inside of melt, if can not effectively discharge, hole and bubble appear easily in the inside of deriving the adhesive tape, and then the adhesive tape derives the in-process, if the fracture appears, influence production device's sustainable operation, for this, top at production facility can set up the exhaust hole, but if screw rod or exhaust hole design are unreasonable, the melt is derived through the exhaust hole refluence very easily, and then block up the exhaust hole, influence the follow-up normal exhaust work problem in exhaust hole.

Therefore, the invention provides a preparation process and a production device of a hydrolysis-resistant low-shrinkage MPP loose tube special material.

Disclosure of Invention

In order to make up for the problem that in the prior art, before the material strips are cut off, the material strips need to be led out stably, but in the extrusion process, gas is easily generated in the molten material and is wrapped in the molten material, if the gas cannot be effectively discharged, pores and bubbles are easily generated in the led-out rubber strips, and further in the leading-out process of the rubber strips, if the gas strips break, the sustainable operation of a production device is influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a special material production device for a hydrolysis-resistant low-shrinkage MPP loose tube, which comprises an extruder body and a motor; the middle end of the top of the sleeve of the extruder body is provided with an exhaust hole; a connecting plate is arranged inside the exhaust hole; the surface of the connecting plate is fixedly connected with an exhaust pipe; the top of the extruder body is fixedly connected with a fixed block at the position of the exhaust pipe; a motor is arranged inside the fixed block; the output shaft of the motor is fixedly connected with a spiral column at the inner position of the exhaust pipe; in the prior art, before the strip is cut off, the strip needs to be stably led out, but because gas is easily generated in the melting material during the extrusion process, the gas is wrapped in the melting material, if the gas cannot be effectively discharged, pores and bubbles are easily generated in the leading-out rubber strip, and further the leading-out rubber strip is broken in the leading-out process, so that the sustainable operation of a production device is influenced, and therefore, an exhaust hole is formed in the top of production equipment, however, if the screw or the exhaust hole is unreasonable in design, the melt is easy to flow backwards and lead out through the exhaust hole, so that the exhaust hole is blocked, and the subsequent normal exhaust work of the exhaust hole is influenced, through the special material production device for the hydrolysis-resistant low-shrinkage MPP loose tube, when gas is trapped inside the melt in the extruder body, the gas can be led out through the exhaust pipe, if the melt has a flash problem through the exhaust pipe, the process adjustment can be firstly carried out to solve the flash problem, then the motor is started, the motor can drive the spiral column to rotate, the flash in the solidification state in the exhaust pipe can be crushed during the rotation process of the spiral column, and the crushed flash falls back into the extruder body, so that the cleaning of the inside of the exhaust pipe is effectively realized, the inside of the exhaust pipe blocked due to the flash problem is conducted again, and the inside of the exhaust pipe is convenient to keep the conducting state for a long time, the problem of a large number of air holes in the rubber strip in the production process of the special material is reduced, and the long-time sustainable normal operation of a production device is ensured.

Preferably, a sliding groove is formed in the inner surface of the exhaust pipe, close to the top of the exhaust pipe; a sliding block is connected inside the sliding groove in a sliding manner; a first spring is fixedly connected between the sliding block and the top surface of the sliding groove; the top surface of the sliding groove is fixedly connected with a control switch; the during operation, through setting up the sliding block, when a large amount of flashes have appeared in the inside of blast pipe, the flash spills over through the blast pipe easily, in order to discover the flash problem in time, when the inside melt of excessive income blast pipe was too much, the melt can upwards extrude the sliding block, and promote the sliding block, make sliding block extrusion control switch, receive extruded control switch, can control and report to the police, the starter motor simultaneously, reverse clearance is carried out to the inside melt of blast pipe fast, it is unobstructed to guarantee that the inside of blast pipe can clear up fast.

Preferably, the inside of the fixed block is fixedly connected with a guide rail; a sliding block is connected inside the guide rail in a sliding manner; the bottom of the sliding block is fixedly connected with a mounting seat; a motor is arranged in the mounting seat, and the mounting seat is fixedly connected with the top surface of the exhaust pipe; the surface of the extruder body is provided with an adjusting groove; the inner part of the adjusting groove is connected with a connecting plate in a sliding manner; the during operation, through setting up the guide rail, when the flash problem appears, the melt can be filled with in the extruder body inside of blast pipe position, electric control slider slides on the surface of guide rail this moment, the slider can drive the mount pad and remove, can drive connecting plate and blast pipe motion through the mount pad, the realization is to the regulation of blast pipe position, make the blast pipe remove to the position section of the extruder body that does not fill up the melt completely, the inside melt of the blast pipe of being convenient for is derived fast, exhaust hole after the clearance simultaneously can continue to participate in the operation of exhausting.

Preferably, a cleaning groove is formed in the exhaust pipe; a moving block is connected inside the cleaning groove in a sliding manner; a movable groove is formed in the movable block, and the movable groove is connected with an air source through a pipeline; a cleaning block is connected inside the movable groove in a sliding manner; the side face of one side of the cleaning block relative to the spiral column is designed into a threaded structure; the top of each moving block is fixedly connected with a second spring; during operation, through setting up the movable block, through the inside sliding connection clearance piece at the movable block, the control air supply for the clearance piece exports the movable groove, clearance piece this moment can with spiral post between the threaded connection, and then when the spiral post rotates, can drive clearance piece and movable block downstream, through the clearance piece that moves down, can carry out abundant clearance to the surface of spiral post, guarantee that the inside melt of blast pipe is fully exported, accomplish the clearance back, income movable groove in the clearance piece, the movable block is under the effect of second spring, reset fast.

Preferably, the notch of the cleaning groove is fixedly connected with a sealing block, and the sealing block is of a foldable sealing structure; during operation, through setting up sealed piece, can carry out effective shutoff to the oral area in clearance groove through sealed piece, but sealed piece adopts beta structure, when not influencing the movable block and normally moving, can avoid the inside in clearance groove to fill up the melt, and then influences the normal reset of movable block.

Preferably, the bottom of the cleaning groove is fixedly connected with a telescopic rod, and the telescopic rod is communicated with the inside of the cleaning groove in a one-way mode through a connecting pipe; a one-way valve is arranged between the bottom of the cleaning tank and the outside; the surface of the sealing block is provided with uniformly arranged gas injection holes; during operation, through setting up the telescopic link, when the movable block moved the bottommost position in clearance groove, the movable block can extrude the telescopic link for the inside gaseous leading-in to the inside in clearance groove of telescopic link, the inside atmospheric pressure increase in clearance groove, and then the gas can spout through the fumarole on sealed piece surface, realizes carrying out abundant jet-propelled clearance to the inside of jet-propelled pipe, especially the surface of spiral post.

Preferably, the sealing block comprises a sealing sub-plate and an elastic sheet; the sealing sub-plates are hinged to form an integral sealing block; elastic pieces are fixedly connected between two adjacent sealing plates relative to the side face of one side of the spiral column; the surfaces of the elastic pieces are provided with small holes; during operation, divide the board through setting up sealed, through being articulated between the sealed board of dividing, when sealed between the board relative motion, can extrude the flexure strip for the flexure strip warp, and then makes the flexure strip and sealed gas between the board of dividing pass through the aperture and constantly derive, realizes the continuous jet-propelled clearance in inside to the blast pipe, improves the clearance effect to the blast pipe inside.

Preferably, the surface of the spiral column is rotatably connected with a lantern ring at a position close to the top of the spiral column; the number of the lantern rings is two; one of the lantern rings is connected with an inlet pipe; an outlet pipe is connected with the other lantern ring; a guide hole is formed in the spiral column; the during operation, through setting up the lantern ring, through advancing the leading-in cold liquid of pipe to the inside of one of them lantern ring, cold liquid and then can leading-in guide hole to flow through the guide hole, last guide hole is at the inside flow cooling of spiral post, and cold liquid can be through the leading-in exit tube of another lantern ring at last, and derives through the exit tube, cools down to the spiral post, can be so that the inside temperature of blast pipe descends, and then the melt can rapid condensation, and the melt of being convenient for is by quick breakage and derives.

Preferably, the guide holes are internally hinged with uniformly arranged rotating plates; the surfaces of the rotating plates are fixedly connected with third springs; the surfaces of the rotating plates are all provided with vibrating blocks; the during operation, through setting up the rotor plate, when there is cold liquid to flow through in the inside of guide hole, cold liquid can strike the rotor plate for the rotor plate rotates and compresses the third spring, and the rotor plate can drive the motion of vibrations piece simultaneously, makes the inside of vibrations piece collision spiral post, and then realizes the vibrations of spiral post, and the spiral post of vibrations state can promote its surperficial melt to drop fast.

The preparation process of the special material for the hydrolysis-resistant low-shrinkage MPP loose tube is suitable for the production device of the special material for the hydrolysis-resistant low-shrinkage MPP loose tube, and comprises the following preparation steps:

s1: firstly, respectively weighing 50-60 parts of polypropylene, 10-15 parts of paraffin, 3-5 parts of antioxidant, 1-2 parts of heat stabilizer, 3-4 parts of titanate coupling agent, 2-3 parts of lubricant, 0.5-1 part of anti-coagulating agent and 5-10 parts of light calcium carbonate according to parts by weight;

s2: then sequentially adding the raw materials weighed in the S1 into a production device, fully mixing, extruding by a double screw in the production device to form an adhesive tape, and then cutting off the adhesive tape to obtain a special material in a small particle state;

s3: when carrying out the raw materials and extruding, the motor rotates, can make the spiral post rotate for the normal exhaust in-process of blast pipe, the inside of leading-in extruder body is returned to the inside of the inside excessive pan feeding of blast pipe, makes the long-term normal exhaust work of blast pipe.

The invention has the following advantages:

1. according to the invention, through the preparation process and the production device of the hydrolysis-resistant low-shrinkage MPP loose tube special material, the extruder body and the motor are arranged; drive the spiral post through control motor and rotate, effectually realized clearing up the inside of blast pipe for the inside of the blast pipe that blocks up because of the flash problem switches on again, and the inside of the blast pipe of being convenient for keeps the on-state for a long time, reduces the special-purpose material production process, and the long-time sustainable normal operating of apparatus for producing is guaranteed to a large amount of gas pocket problems in the inside of adhesive tape.

2. According to the preparation process and the production device of the hydrolysis-resistant low-shrinkage MPP loose tube special material, the moving block and the cleaning block are arranged, the cleaning block is connected with the inside of the moving block in a sliding manner, the air source is controlled, the cleaning block is led out of the moving groove, the cleaning block can be in threaded connection with the spiral columns at the moment, the spiral columns can be driven to move downwards when rotating, the surface of the spiral columns can be fully cleaned through the downward moving cleaning block, the molten material in the exhaust pipe can be fully led out, the moving groove is arranged in the cleaning block after cleaning is completed, and the moving block is rapidly reset under the action of the second spring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged partial view taken at B in FIG. 3;

FIG. 5 is an enlarged partial view at C of FIG. 4;

FIG. 6 is a schematic structural view of a screw column of the present invention;

FIG. 7 is an enlarged partial view taken at D in FIG. 6;

FIG. 8 is a flow chart of a method of the present invention.

In the figure: the extruder comprises an extruder body 1, a motor 2, a connecting plate 3, an exhaust pipe 4, a fixed block 5, a cleaning groove 6, a spiral column 7, a sliding block 8, a first spring 9, a control switch 10, a guide rail 11, a sliding block 12, a mounting seat 13, a moving block 14, a cleaning block 15, a second spring 16, a sealing block 17, a telescopic rod 18, an air injection hole 19, a sealing sub-plate 20, an elastic sheet 21, a small hole 22, a lantern ring 23, an inlet pipe 24, an outlet pipe 25, a guide hole 26, a rotating plate 27, a third spring 28 and a vibration block 29.

Detailed Description

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 one

Referring to fig. 1-5, the device for producing hydrolysis-resistant low-shrinkage MPP loose tube special material comprises an extruder body 1 and a motor 2; the middle end of the top of the sleeve of the extruder body 1 is provided with an exhaust hole; a connecting plate 3 is arranged inside the exhaust hole; the surface of the connecting plate 3 is fixedly connected with an exhaust pipe 4; the top of the extruder body 1 is fixedly connected with a fixed block 5 at the position of the exhaust pipe 4; the motor 2 is arranged inside the fixed block 5; a spiral column 7 is fixedly connected to the output shaft of the motor 2 at the inner position of the exhaust pipe 4; in the prior art, before the strip is cut off, the strip needs to be stably led out, but because gas is easily generated in the melting material during the extrusion process, the gas is wrapped in the melting material, if the gas cannot be effectively discharged, pores and bubbles are easily generated in the leading-out rubber strip, and further the leading-out rubber strip is broken in the leading-out process, so that the sustainable operation of a production device is influenced, and therefore, an exhaust hole is formed in the top of production equipment, however, if the screw or the vent hole is unreasonable in design, the melt is easy to flow back and lead out through the vent hole, so as to block the vent hole and influence the subsequent normal exhaust work of the vent hole, through the special material production device for hydrolysis-resistant low-shrinkage MPP loose tube, when gas is trapped inside the melt in the extruder body 1, the gas can be led out through the vent pipe 4, if the melt has a flash problem through the vent pipe 4, the process adjustment can be firstly carried out to solve the flash problem, then the motor 2 is started, the motor 2 can drive the spiral column 7 to rotate, the flash in the solidification state inside the vent pipe 4 can be crushed in the rotating process of the spiral column 7, and the crushed flash falls back into the extruder body 1, the cleaning of the inside of the vent pipe 4 is effectively realized through the invention, so that the inside of the vent pipe 4 blocked due to the flash problem is conducted again, the inside of blast pipe 4 of being convenient for keeps the on-state for a long time, reduces the special-purpose material production process, and the sustainable normal operating of long-time of apparatus for producing is guaranteed to the inside a large amount of gas pockets problem of adhesive tape.

The inner surface of the exhaust pipe 4 is provided with a sliding groove at the position close to the top of the exhaust pipe 4; a sliding block 8 is connected inside the sliding groove in a sliding manner; a first spring 9 is fixedly connected between the sliding block 8 and the top surface of the sliding groove; the top surface of the chute is fixedly connected with a control switch 10; the during operation, through setting up sliding block 8, when a large amount of flashes have appeared in the inside of blast pipe 4, the flash spills over through blast pipe 4 easily, in order to discover the flash problem in time, when the inside melt of the interior of blast pipe 4 that overflows is too much, the melt can upwards extrude sliding block 8, and promote sliding block 8, make sliding block 8 extrude control switch 10, receive extruded control switch 10, can control and report to the police, start motor 2 simultaneously, reverse clearance is carried out to the inside melt of blast pipe 4 fast, it is unobstructed to guarantee that the inside of blast pipe 4 can clear up fast.

The inside of the fixed block 5 is fixedly connected with a guide rail 11; a sliding block 12 is connected inside the guide rail 11 in a sliding manner; the bottom of the sliding block 12 is fixedly connected with a mounting seat 13; the motor 2 is arranged in the mounting seat 13, and the mounting seat 13 is fixedly connected with the top surface of the exhaust pipe 4; the surface of the extruder body 1 is provided with an adjusting groove; the inner part of the adjusting groove is connected with a connecting plate 3 in a sliding way; the during operation, through setting up guide rail 11, when the flash problem appears, the melt can be filled with in 1 inside of the extruder body of blast pipe 4 positions, electric control slider 12 is at the surperficial slip of guide rail 11 this moment, slider 12 can drive mount pad 13 and remove, can drive connecting plate 3 and blast pipe 4 motion through mount pad 13, the realization is to the regulation of 4 positions of blast pipe, make blast pipe 4 remove to the extruder body 1's of not filling completely the melt position section, be convenient for the inside melt of blast pipe 4 is derived fast, exhaust hole after the clearance simultaneously can continue to participate in the exhaust operation.

A cleaning groove 6 is formed in the exhaust pipe 4; a moving block 14 is connected inside the cleaning groove 6 in a sliding manner; a movable groove is formed in the movable block 14, and the interior of the movable groove is connected with an air source through a pipeline; a cleaning block 15 is connected inside the movable groove in a sliding manner; the side face of the cleaning block 15, which is opposite to one side face of the spiral column 7, is designed into a threaded structure; the top of the moving block 14 is fixedly connected with a second spring 16; during operation, through setting up movable block 14, through the inside sliding connection clearance piece 15 at movable block 14, the control air supply for clearance piece 15 exports the movable groove, clearance piece 15 this moment can with spiral post 7 between threaded connection, and then when spiral post 7 rotates, can drive clearance piece 15 and movable block 14 downstream, through the clearance piece 15 of lapse, can carry out abundant clearance to the surface of spiral post 7, guarantee that the inside melt of blast pipe 4 fully exports, accomplish the clearance back, income movable groove in the clearance piece 15, movable block 14 is under second spring 16's effect, quick reset.

The notch of the cleaning groove 6 is fixedly connected with a sealing block 17, and the sealing block 17 is of a foldable sealing structure; during operation, through setting up sealed piece 17, can carry out effective shutoff to the oral area of clearance groove 6 through sealed piece 17, sealed piece 17 adopts beta structure, when not influencing the normal removal of movable block 14, can avoid the inside of clearance groove 6 to fill up the melt, and then influences the normal reset of movable block 14.

The bottom of the cleaning groove 6 is fixedly connected with a telescopic rod 18, and the telescopic rod 18 is communicated with the interior of the cleaning groove 6 in a one-way mode through a connecting pipe; a one-way valve is arranged between the bottom of the cleaning tank 6 and the outside; the surface of the sealing block 17 is provided with uniformly arranged gas injection holes 19; during operation, through setting up telescopic link 18, when moving block 14 moved the bottommost position of clearance groove 6, moving block 14 can extrude telescopic link 18 for the inside gaseous leading-in to the inside of clearance groove 6 of telescopic link 18, the inside atmospheric pressure increase of clearance groove 6, and then the gas can spout through the fumarole 19 on sealed block 17 surface, realizes carrying out abundant jet-propelled clearance to the inside of jet-propelled pipe, especially the surface of spiral post 7.

The sealing block 17 comprises a sealing sub-plate 20 and an elastic sheet 21; a plurality of sealing sub-plates 20 are hinged with each other and form an integral sealing block 17; elastic pieces 21 are fixedly connected between two adjacent sealing plates relative to the side face of one side of the spiral column 7; the surface of the elastic sheet 21 is provided with small holes 22; during operation, divide board 20 through setting up sealedly, through articulated between the sealed board 20 that divides, when sealed between the board 20 relative motion, can extrude flexure strip 21 for flexure strip 21 warp, and then make flexure strip 21 and sealed gas between the board 20 of dividing constantly derive through aperture 22, realize the continuous jet-propelled clearance in inside to blast pipe 4, improve the clearance effect to blast pipe 4 inside.

Example two

Referring to fig. 6 and 7, a collar 23 is rotatably connected to the surface of the screw column 7 near the top of the screw column 7; the number of the lantern rings 23 is two; one of the collars 23 is connected with an inlet tube 24; an outlet pipe 25 is connected with the other lantern ring 23; a guide hole 26 is formed in the spiral column 7; the during operation, through setting up the lantern ring 23, through advancing the leading-in cold liquid of pipe 24 to the inside of one of them lantern ring 23, cold liquid and then can leading-in guide hole 26, and flow through guide hole 26, last guide hole 26 is at the inside flow cooling of spiral post 7, cold liquid can be through the leading-in exit tube 25 of another lantern ring 23 at last, and derive through exit tube 25, cool down spiral post 7, can be so that the inside temperature of blast pipe 4 descends, and then the melt can rapid condensation, the melt of being convenient for is by rapid fracture and derivation.

The guide hole 26 is internally hinged with a rotating plate 27 which is uniformly arranged; the surfaces of the rotating plates 27 are fixedly connected with third springs 28; the surfaces of the rotating plates 27 are all provided with vibration blocks 29; during operation, through setting up rotating plate 27, when there is cold liquid to flow through in the inside of guide hole 26, cold liquid can strike rotating plate 27 for rotating plate 27 rotates and compresses third spring 28, and rotating plate 27 can drive vibrations piece 29 motion simultaneously, makes vibrations piece 29 collision spiral post 7's inside, and then realizes the vibrations of spiral post 7, and the spiral post 7 of vibrations state can promote its surperficial melt to drop fast.

The preparation process of the special material for the hydrolysis-resistant low-shrinkage MPP loose tube is suitable for the production device of the special material for the hydrolysis-resistant low-shrinkage MPP loose tube, and comprises the following preparation steps:

s1: firstly, respectively weighing 50-60 parts of polypropylene, 10-15 parts of paraffin, 3-5 parts of antioxidant, 1-2 parts of heat stabilizer, 3-4 parts of titanate coupling agent, 2-3 parts of lubricant, 0.5-1 part of anti-coagulating agent and 5-10 parts of light calcium carbonate according to parts by weight;

s2: then sequentially adding the raw materials weighed in the S1 into a production device, fully mixing, extruding by a double screw in the production device to form an adhesive tape, and then cutting off the adhesive tape to obtain a special material in a small particle state;

s3: when carrying out the raw materials and extruding, motor 2 rotates, can make spiral post 7 rotate for 4 normal exhaust processes of blast pipe, the inside overflowed material of blast pipe 4 returns the inside of leading-in extruder body 1, makes 4 long-term normal exhaust work of blast pipe.

According to the working principle, when gas is trapped inside the molten material in the extruder body 1, the gas can be led out through the exhaust pipe 4, if the molten material has a flash problem through the exhaust pipe 4, the process adjustment can be firstly carried out to solve the flash problem, then the motor 2 is started, the motor 2 can drive the spiral column 7 to rotate, and during the rotation process of the spiral column 7, the flash in a solidification state inside the exhaust pipe 4 can be crushed, and the crushed flash falls back into the extruder body 1; through the arrangement of the sliding block 8, when a large amount of flash occurs in the exhaust pipe 4, the flash easily overflows through the exhaust pipe 4, in order to find the flash problem in time, when too much melt overflows into the exhaust pipe 4, the melt can upwards extrude the sliding block 8 and push the sliding block 8, so that the sliding block 8 extrudes the control switch 10, the control switch 10 is extruded to control to alarm, the motor 2 is started simultaneously, the melt in the exhaust pipe 4 is quickly and reversely cleaned, and the inside of the exhaust pipe 4 can be quickly cleaned smoothly; by arranging the guide rail 11, when the problem of flash occurs, the extruder body 1 at the position of the exhaust pipe 4 is filled with molten materials, at the moment, the electric control slide block 12 slides on the surface of the guide rail 11, the slide block 12 can drive the mounting seat 13 to move, the mounting seat 13 can drive the connecting plate 3 and the exhaust pipe 4 to move, the position of the exhaust pipe 4 is adjusted, the exhaust pipe 4 is made to move to the position section of the extruder body 1 which is not completely filled with the molten materials, the molten materials in the exhaust pipe 4 can be led out quickly, and meanwhile, the cleaned exhaust hole can continue to participate in exhaust operation; by arranging the moving block 14, the cleaning block 15 is connected with the inner part of the moving block 14 in a sliding manner, and an air source is controlled, so that the cleaning block 15 is led out of the moving groove, the cleaning block 15 can be connected with the spiral column 7 in a threaded manner at the moment, and further the spiral column 7 can drive the cleaning block 15 and the moving block 14 to move downwards when rotating, the surface of the spiral column 7 can be fully cleaned through the cleaning block 15 moving downwards, the molten material in the exhaust pipe 4 is guaranteed to be fully led out, after cleaning is completed, the moving groove is led into the cleaning block 15, and the moving block 14 is quickly reset under the action of the second spring 16; by arranging the sealing block 17, the mouth part of the cleaning groove 6 can be effectively plugged by the sealing block 17, and the sealing block 17 adopts a foldable structure, so that the situation that the moving block 14 normally moves is not influenced, and meanwhile, the situation that the interior of the cleaning groove 6 is filled with molten materials and the normal reset of the moving block 14 is influenced can be avoided; by arranging the telescopic rod 18, when the moving block 14 moves to the bottommost position of the cleaning groove 6, the moving block 14 can extrude the telescopic rod 18, so that gas in the telescopic rod 18 is led into the cleaning groove 6, the internal air pressure of the cleaning groove 6 is increased, and the gas can be ejected through the air ejecting holes 19 on the surface of the sealing block 17, and the internal part of the air ejecting pipe, particularly the surface of the spiral column 7, can be fully ejected and cleaned; by arranging the sealing sub-plates 20 and hinging the sealing sub-plates 20, when the sealing sub-plates 20 move relatively, the elastic sheet 21 is extruded, so that the elastic sheet 21 deforms, and further, gas between the elastic sheet 21 and the sealing sub-plates 20 is led out continuously through the small holes 22, thereby realizing continuous gas injection cleaning of the interior of the exhaust pipe 4 and improving the cleaning effect of the interior of the exhaust pipe 4; by arranging the lantern rings 23, cold liquid is introduced into one lantern ring 23 through the inlet pipe 24, then the cold liquid can be introduced into the guide hole 26 and flows through the guide hole 26, finally the guide hole 26 flows and cools in the spiral column 7, and finally the cold liquid can be introduced into the outlet pipe 25 through the other lantern ring 23 and is led out through the outlet pipe 25 to cool the spiral column 7, so that the internal temperature of the exhaust pipe 4 can be reduced, further molten materials can be rapidly condensed, and the molten materials can be rapidly crushed and led out conveniently; through setting up rotating plate 27, when there is cold liquid to flow through in the inside of guide hole 26, cold liquid can strike rotating plate 27 for rotating plate 27 rotates and compresses third spring 28, and rotating plate 27 can drive vibrations piece 29 motion simultaneously, makes vibrations piece 29 collide the inside of spiral post 7, and then realizes the vibrations of spiral post 7, and the spiral post 7 of vibrations state can promote its surperficial melting material to drop fast.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.