CN217670992U - Chlorinated polyvinyl chloride pipe inner cooling device - Google Patents
Chlorinated polyvinyl chloride pipe inner cooling device Download PDFInfo
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- CN217670992U CN217670992U CN202221929905.3U CN202221929905U CN217670992U CN 217670992 U CN217670992 U CN 217670992U CN 202221929905 U CN202221929905 U CN 202221929905U CN 217670992 U CN217670992 U CN 217670992U
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Abstract
The utility model discloses a cold charge is put in chlorinated polyvinyl chloride tubular product, relate to chlorinated polyvinyl chloride tubular product production technical field, when the operation is extruded to chlorinated polyvinyl chloride tubular product, the material gets into the material from the concrete entry of mould and flows the chamber and finally get into the sizing cover, fashioned pipe outer wall was laminated with the inner wall of sizing cover and is followed the sizing cover and outwards slided gradually this moment, the outside that the gas was blocked is established to the pipe cover, the compressed cold air gets into and discharges from first compressed cold air outlet from the chamber of admitting air, it has realized cooling to the pipe blank to carry out heat exchange with the higher pipe blank of temperature, through carrying out preliminary cooling to the pipe blank of extruding, the efficiency of follow-up water-cooling is improved, gas blocking can stereotype the pipe blank in addition, the high problem of shrinkage factor after the pipe blank cooling has significantly reduced, the extrusion moulding's quality is improved, raw and other materials effective utilization rate is high, and the cost is saved.
Description
Technical Field
The utility model relates to a chlorinated polyvinyl chloride tubular product production technical field, concretely relates to interior cooling device of chlorinated polyvinyl chloride tubular product.
Background
Chlorinated polyvinyl chloride is a novel engineering plastic with wide application prospect, is prepared by chlorination modification of polyvinyl chloride resin, and is a novel engineering plastic. Chlorinated polyvinyl chloride pipelines have many advantages: the pipe and the pipe fitting are made of the same material, can be bonded by a special adhesive, and are convenient and reliable; the flame retardance is good, the oxygen index reaches 60, and the flame retardance far exceeds that of common plastics; high temperature resistance, corrosion resistance, difficult oxygen permeation and no water drop hanging; the heat conduction coefficient is low, the thermal linear expansion coefficient is small, heat is not easy to be emitted from the pipeline, the heat loss is small, and a heat insulation protective layer can be omitted; the pipeline is safe and beautiful, has low deflection and small change, has excellent sanitary effect, is not easy to breed bacteria, and has the breeding rate of 1/60 of PEX and 1/10 of copper pipe. The chlorinated polyvinyl chloride pipeline is widely applied to the fields of civil life water supply systems, cold and hot water systems, direct drinking water systems, commercial pure water systems, electronic industry, chemical pipelines and the like.
According to different application industries and application environments of chlorinated polyvinyl chloride pipelines, the requirements on the specification and the model of the pipeline are different, and the specification is diversified from DN20 to DN 1000. Chlorinated polyvinyl chloride pipelines with different specifications have different production processes and requirements on production equipment. In the extrusion process of the existing chlorinated polyvinyl chloride pipe, the cooling process of the pipe is mostly a simple multi-section water cooling process, the cooling efficiency is poor, the extrusion speed and the extrusion molding quality of the chlorinated polyvinyl chloride pipe are greatly limited, the shrinkage rate of the pipe in the cooling process after extrusion is high easily, the raw material consumption of the pipe in unit length is increased, and the cost is increased.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: aiming at the defects in the prior art, the chlorinated polyvinyl chloride pipe inner cooling device is provided, the cooling efficiency is high, the pipe is cooled uniformly, the shrinkage rate is small, and the raw material cost is reduced.
In order to solve the technical problem, the technical scheme of the utility model is that:
an inner cooling device for chlorinated polyvinyl chloride pipes comprises a die body, wherein a middle sleeve is arranged on the inner side of the die body, a port die is arranged at one end of the outer side of the middle sleeve, a mandrel is arranged on the inner side of the port die, a spreader cone is arranged at one end, close to a material inlet of the die body, of the mandrel, a material flow cavity is formed between the outer walls of the mandrel and the spreader cone and the inner walls of the die body, the middle sleeve and the port die, a sizing sleeve is arranged at one end of the outer side of the port die, and the inner diameter of the sizing sleeve is matched with the outlet size of the material flow cavity;
the dabber with the inboard of reposition of redundant personnel awl is equipped with the chamber of admitting air, passes the mould body with the reposition of redundant personnel awl be equipped with the compressed cold air intake pipe that the chamber of admitting air is linked together, the dabber is in the export one end in chamber of admitting air is equipped with the gas distribution dish, the centre of gas distribution dish is equipped with first compressed cold air export, the gas distribution dish is in the outside of first compressed cold air export is equipped with compressed cold air outlet duct, be equipped with on the compressed cold air outlet duct with the air that the internal diameter of sizing cover suited is stifled.
As an improved technical scheme, an annular sprue spreader bracket is arranged between the sprue spreader and the die body, a plurality of material inlet holes are formed in the sprue spreader bracket in the circumferential direction, and the compressed cold air inlet pipe sequentially penetrates through the die body, the sprue spreader bracket and the sprue spreader and then is communicated with the air inlet cavity.
As an improved technical scheme, the annular inner end of the spreader cone support is respectively connected with the spreader cone and the mandrel through bolts, and the annular outer end of the spreader cone support is respectively clamped and fixed with the die body and the middle sleeve.
As an improved technical scheme, a plurality of second compressed cold air outlets are formed in the circumferential direction of the outer side of the first compressed cold air outlet of the air distribution disc.
As an improved technical scheme, the sizing sleeve is provided with a cooling jacket.
As an improved technical scheme, the compressed cold air inlet pipe comprises a pipe inner layer and a pipe outer layer, and a heat insulation layer is arranged on the outer side of the pipe outer layer.
As a preferable technical scheme, the air plug is provided with two parallel air plugs.
According to a preferable technical scheme, annular first fixing tables and annular second fixing tables are arranged on the outer sides of the sizing sleeve and the neck mold respectively and connected through bolts.
According to a preferable technical scheme, one end of the outer side of the die body is provided with a gland, the gland is respectively abutted against the mouth die and the die body, the gland is connected with the die body through bolts, and the mouth die is connected with the die body through bolts.
Since the technical scheme is used, the beneficial effects of the utility model are that:
the utility model discloses an interior cooling device of chlorinated polyvinyl chloride tubular product, including the mould body, the inboard of mould body is equipped with the well cover, outside one end of well cover is equipped with the bush, the inboard of bush is equipped with the dabber, the dabber is close to the one end of mould body material import is equipped with the spreader cone, the outer wall of dabber and spreader cone with the mould body, well cover and form the material flow chamber between the inner wall of bush, the outside one end of bush is equipped with the sizing cover, the internal diameter of sizing cover with the export size in material flow chamber suits; the dabber with the inboard of reposition of redundant personnel awl is equipped with the chamber of admitting air, passes the mould body with the reposition of redundant personnel awl be equipped with the compressed cold air intake pipe that the chamber of admitting air is linked together, the dabber is in the export one end in chamber of admitting air is equipped with the gas distribution dish, the centre of gas distribution dish is equipped with first compressed cold air export, the gas distribution dish is in the outside of first compressed cold air export is equipped with compressed cold air outlet duct, be equipped with on the compressed cold air outlet duct with the air that the internal diameter of sizing cover suited is stifled. When the chlorinated polyvinyl chloride pipe extruding operation is performed, materials enter the material flow cavity from the inlet of the die body and finally enter the sizing sleeve, the outer wall of a formed pipe blank is attached to the inner wall of the sizing sleeve and gradually slides outwards along the sizing sleeve, the pipe blank sleeve is arranged on the outer side of the air plug, compressed cold air enters from the air inlet cavity and is discharged from the first compressed cold air outlet, heat exchange is performed with the pipe blank with higher temperature to cool the pipe blank, the extruded pipe blank is preliminarily cooled, the efficiency of subsequent water cooling is improved, in addition, the air plug can shape the pipe blank, the problem of high shrinkage rate after the pipe blank is cooled is greatly reduced, the quality of extrusion forming of the pipe blank is improved, the effective utilization rate of raw materials is high, and the cost is saved.
The utility model discloses a be equipped with the annular reposition of redundant personnel cone support of circle between the reposition of redundant personnel cone and the mould body, reposition of redundant personnel cone support circumference is equipped with a plurality of materials inlet holes, the compressed cold air intake pipe passes in proper order the mould body reposition of redundant personnel cone support with behind the reposition of redundant personnel cone with the chamber intercommunication of admitting air. The inner annular end of the spreader cone support is connected with the spreader cone and the mandrel through bolts respectively, and the outer annular end of the spreader cone support is connected with the die body and the middle sleeve in a clamping mode and fixed respectively. Can fix dabber and reposition of redundant personnel awl through the reposition of redundant personnel awl support, make the material flow chamber size that it formed evenly stable, cooperate to set up a plurality of material inlet holes of all establishing on the reposition of redundant personnel awl support for the material can be even fill in material flow chamber, thereby the pipe thickness uniformity who obtains through extruding is good, and the stability in quality is high.
The air distribution disc is provided with a plurality of second compressed cold air outlets in the circumferential direction of the outer side of the first compressed cold air outlet. Compressed cold air enters the tube blank through a plurality of second compressed cold air outlets and enters the closed space formed by the tube blank and the air plug, so that the whole closed space maintains certain pressure, the tube blank is attached to the inner wall of the sizing sleeve under the pressure, the tube blank is formed effectively, the heat emitted by the tube blank heats the air in the closed space, the air in the closed space exchanges heat with the compressed cold air in the compressed cold air outlet pipe, and finally the effect of cooling the inner wall of the tube blank is realized. The sizing cover is equipped with the cooling jacket, and the refrigerant in the cooling jacket can carry out direct cooling to the outer wall of pipe, and inside outside cools off jointly for cooling rate has been avoided cooling inhomogeneous condition to take place, and the pipe that obtains is of high quality.
The compressed cold air inlet pipe comprises a pipe inner layer and a pipe outer layer, and a heat insulation layer is arranged on the outer side of the pipe outer layer. Through the setting of pipe bilayer and insulating layer for compressed cold air's heat preservation is effectual, has avoided compressed cold air to get into and has taken place too much heat exchange with the external world before the chamber that admits air, thereby makes compressed cold air get into the high temperature in chamber that admits air, causes the cooling effect of pipe poor.
The air plugs are arranged in parallel, so that the air tightness is better, the ventilation volume of compressed cold air is saved, and the energy waste is avoided.
The outer sides of the sizing sleeve and the mouth mold are respectively provided with a first annular fixing table and a second annular fixing table, and the first fixing table is connected with the second fixing table through bolts. The sizing sleeve is firmly fixed with the mouth mold and tightly attached, so that the possibility of leakage of compressed cold air from the joint is greatly reduced.
And one end of the outer side of the die body is provided with a gland, the gland is respectively abutted against the mouth die and the die body, the gland is connected with the die body through a bolt, and the mouth die is connected with the die body through a bolt. Through the gland, the neck mold, the middle sleeve and the mold body are tightly attached and firmly fixed, and the possibility of overflowing of materials from seams is greatly reduced.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a perspective view of an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the invention;
fig. 3 is a cross-sectional view of another aspect of an embodiment of the present invention;
FIG. 4 is an enlarged view at A in FIG. 2;
wherein: 1. a mold body; 2. a middle sleeve; 3. a neck ring mold; 4. a mandrel; 5. a spreader cone; 6. a material flow chamber; 7. sizing sleeve; 8. an air inlet cavity; 9. a compressed cold air inlet pipe; 10. a gas distribution plate; 11. a first compressed cold air outlet; 12. a compressed cold air outlet pipe; 13. air blocking; 14. a pipe blank; 15. a spreader bracket; 16. feeding the material into the hole; 17. a second compressed cold air outlet; 18. a cooling jacket; 19. an inner layer of the tube; 20. an outer layer of the tube; 21. a thermal insulation layer; 22. a first fixed table; 23. a second stationary stage; 24. and (7) pressing the cover.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1-4, an inner cooling device for a chlorinated polyvinyl chloride pipe comprises a die body 1, wherein a middle sleeve 2 is arranged on the inner side of the die body 1, a die 3 is arranged at one end of the outer side of the middle sleeve 2, a mandrel 4 is arranged on the inner side of the die 3, a splitter cone 5 is arranged at one end, close to a material inlet, of the die body 1, of the mandrel 4, a material flow cavity 6 is formed between the outer walls of the mandrel 4 and the splitter cone 5 and the inner walls of the die body 1, the middle sleeve 2 and the die 3, a sizing sleeve 7 is arranged at one end of the outer side of the die 3, and the inner diameter of the sizing sleeve 7 is matched with the outlet size of the material flow cavity 6; dabber 4 with the inboard of reposition of redundant personnel awl 5 is equipped with air intake chamber 8, passes the mould body 1 with reposition of redundant personnel awl 5 be equipped with the compressed cold air intake pipe 9 that air intake chamber 8 is linked together, dabber 4 is in air intake chamber 8's export one end is equipped with air distribution dish 10, air distribution dish 10's centre is equipped with first compressed cold air outlet 11, air distribution dish 10 is in the outside of first compressed cold air outlet 11 is equipped with compressed cold air outlet duct 12, be equipped with on the compressed cold air outlet duct 12 with the air lock 13 that the internal diameter of sizing cover 7 suited. When the chlorinated polyvinyl chloride pipe is extruded, the material enters the material flow cavity 6 from the inlet of the die body 1 and finally enters the sizing sleeve 7, at the moment, the outer wall of the formed pipe blank 14 is attached to the inner wall of the sizing sleeve 7 and gradually slides outwards along the sizing sleeve 7, the pipe blank 14 is sleeved on the outer side of the air plug 13, compressed cold air enters from the air inlet cavity 8 and is discharged from the first compressed cold air outlet 11, heat exchange is carried out with the pipe blank 14 with higher temperature to cool the pipe blank 14, preliminary cooling is carried out on the extruded pipe blank 14, the efficiency of subsequent water cooling is improved, the air plug 13 can shape the pipe blank 14, the problem that the shrinkage rate of the pipe blank 14 after cooling is high is greatly reduced, the quality of extrusion molding of the pipe blank 14 is improved, the effective utilization rate of raw materials is high, and the cost is saved.
An annular shunt cone support 15 is arranged between the shunt cone 5 and the die body 1, a plurality of material inlet holes 16 are formed in the circumferential direction of the shunt cone support 15, and the compressed cold air inlet pipe 9 sequentially penetrates through the die body 1, the shunt cone support 15 and the shunt cone 5 and then is communicated with the air inlet cavity 8. The annular inner end of the diffluence cone support 15 is respectively connected with the diffluence cone 5 and the mandrel 4 through bolts, and the annular outer end of the diffluence cone support 15 is respectively fixed with the die body 1 and the middle sleeve 2 in a clamping manner. Can fix dabber 4 and spreader 5 through spreader cone support 15, make 6 circumference sizes of material stream chamber that it formed evenly stable, cooperate and set up a plurality of materials inlet 16 that all establish on spreader cone support 15 for the material can be even fill in material stream chamber 6, thereby the pipe 14 thickness uniformity that obtains through extruding is good, and the stability of quality is high.
The air distribution plate 10 is provided with a plurality of second compressed cold air outlets 17 at the outer circumference of the first compressed cold air outlet 11. Compressed cold air enters the closed space formed by the tube blank 14 and the air plug 13 through the second compressed cold air outlets 17, so that the whole closed space maintains certain pressure, the tube blank 14 is attached to the inner wall of the sizing sleeve 7 under the pressure, the tube blank 14 is formed effectively, meanwhile, the air in the closed space is heated by the heat emitted by the tube blank 14, the air in the closed space is subjected to heat exchange with the compressed cold air in the compressed cold air outlet pipe 12, and finally, the effect of cooling the inner wall of the tube blank 14 is realized. The sizing sleeve 7 is provided with the cooling jacket 18, the outer wall of the tube blank 14 can be directly cooled by a refrigerant in the cooling jacket 18, the inner part and the outer part are cooled together, the cooling rate is increased, the condition of uneven cooling is avoided, and the obtained tube blank 14 is good in quality.
The compressed cold air inlet pipe 9 comprises a pipe inner layer 19 and a pipe outer layer 20, and a heat insulation layer 21 is arranged on the outer side of the pipe outer layer 20. Through the setting of the pipe bilayer and insulating layer 21 for the heat preservation of compressed cold air is effectual, has avoided compressed cold air to get into and has taken place too much heat exchange with the external world before admitting air chamber 8, thereby makes compressed cold air get into the high temperature in chamber 8 that admits air, causes the cooling effect of pipe 14 poor.
The air plugs 13 are arranged in parallel, so that the air tightness is better, the ventilation quantity of compressed cold air is saved, and the energy waste is avoided.
The outer sides of the sizing sleeve 7 and the neck mold 3 are respectively provided with a first annular fixing table 22 and a second annular fixing table 23, and the first fixing table 22 and the second fixing table 23 are connected through bolts. The sizing sleeve 7 is firmly fixed with the mouth mold 3 and is tightly attached, so that the possibility of leakage of compressed cold air from seams is greatly reduced.
A gland 24 is arranged at one end of the outer side of the die body 1, the gland 24 is respectively abutted against the mouth die 3 and the die body 1, the gland 24 is connected with the die body 1 through bolts, and the mouth die 3 is connected with the die body 1 through bolts. Through the gland 24, the neck mold 3, the middle sleeve 2 and the mold body 1 are tightly attached and firmly fixed, and the possibility of overflowing of materials from seams is greatly reduced.
The utility model discloses a theory of operation:
when the chlorinated polyvinyl chloride pipe is extruded, materials enter the material flow cavity 6 from the inlet of the die body 1, a pipe blank 14 obtained through extrusion forming reaches the sizing sleeve 7 and slides outwards along the sizing sleeve 7 along with continuous extrusion forming, compressed cold air enters the air inlet cavity 8 through the compressed cold air inlet pipe 9 and is respectively discharged from the first compressed cold air outlet 11 and the second compressed cold air outlet 17, the compressed cold air discharged through the second compressed cold air outlet 17 reaches a certain pressure in a closed space formed by the pipe blank 14 and the air plug 13, the outer wall of the pipe blank 14 is enabled to be tightly attached to the sizing sleeve 7, the sizing sleeve 7 is cooled by a refrigerant in the cooling jacket 18, and the effects of primarily reducing the temperature of the pipe blank 14 and sizing the pipe blank 14 are achieved. Meanwhile, the compressed cold air exhausted from the first compressed air outlet exchanges heat with the hot air in the tube blank 14, the inner wall of the tube blank 14 is cooled, the inside and the outside are cooled together, the cooling rate is increased, and the condition of uneven cooling is avoided.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (9)
1. The utility model provides a chlorinated polyvinyl chloride tubular product inner cooling device which characterized in that: the die comprises a die body, wherein a middle sleeve is arranged on the inner side of the die body, a mouth die is arranged at one end of the outer side of the middle sleeve, a mandrel is arranged on the inner side of the mouth die, a spreader cone is arranged at one end, close to a material inlet, of the die body, of the mandrel, a material flow cavity is formed between the outer wall of the spreader cone and the inner walls of the die body, the middle sleeve and the mouth die, a sizing sleeve is arranged at one end of the outer side of the mouth die, and the inner diameter of the sizing sleeve is matched with the outlet size of the material flow cavity;
the dabber with the inboard of reposition of redundant personnel awl is equipped with the chamber of admitting air, passes the mould body with the reposition of redundant personnel awl be equipped with the compressed cold air intake pipe that the chamber of admitting air is linked together, the dabber is in the export one end in chamber of admitting air is equipped with the gas distribution dish, the centre of gas distribution dish is equipped with first compressed cold air outlet, the gas distribution dish is in the outside of first compressed cold air outlet is equipped with compressed cold air outlet duct, be equipped with on the compressed cold air outlet duct with the air blockage that the internal diameter of sizing cover suited.
2. The chlorinated polyvinyl chloride pipe internal cooling device as claimed in claim 1, wherein: the split-flow cone die is characterized in that an annular split-flow cone support is arranged between the split-flow cone and the die body, a plurality of material inlet holes are formed in the circumferential direction of the split-flow cone support, and the compressed cold air inlet pipe sequentially penetrates through the die body, the split-flow cone support and the split-flow cone and then is communicated with the air inlet cavity.
3. The chlorinated polyvinyl chloride pipe internal cooling device as claimed in claim 2, wherein: the inner annular end of the sprue spreader support is connected with the sprue spreader and the mandrel through bolts respectively, and the outer annular end of the sprue spreader support is clamped and fixed with the die body and the middle sleeve respectively.
4. The internal cooling device for chlorinated polyvinyl chloride pipes as claimed in claim 1, wherein: the air distribution disc is provided with a plurality of second compressed cold air outlets in the circumferential direction of the outer side of the first compressed cold air outlet.
5. The internal cooling device for chlorinated polyvinyl chloride pipes as claimed in claim 1, wherein: the sizing sleeve is provided with a cooling jacket.
6. The internal cooling device for chlorinated polyvinyl chloride pipes as claimed in claim 1, wherein: the compressed cold air inlet pipe comprises a pipe inner layer and a pipe outer layer, and a heat insulation layer is arranged on the outer side of the pipe outer layer.
7. The internal cooling device for chlorinated polyvinyl chloride pipes as claimed in claim 1, wherein: the gas block is provided with two parallel gas blocks.
8. The chlorinated polyvinyl chloride pipe internal cooling device as claimed in claim 1, wherein: the outer sides of the sizing sleeve and the mouth mold are respectively provided with a first annular fixing table and a second annular fixing table, and the first fixing table is connected with the second fixing table through bolts.
9. The internal cooling device for chlorinated polyvinyl chloride pipes as claimed in claim 1, wherein: and one end of the outer side of the die body is provided with a gland, the gland is respectively abutted against the neck ring and the die body, the gland is connected with the die body through a bolt, and the neck ring is connected with the die body through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221929905.3U CN217670992U (en) | 2022-07-25 | 2022-07-25 | Chlorinated polyvinyl chloride pipe inner cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221929905.3U CN217670992U (en) | 2022-07-25 | 2022-07-25 | Chlorinated polyvinyl chloride pipe inner cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217670992U true CN217670992U (en) | 2022-10-28 |
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ID=83720602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221929905.3U Active CN217670992U (en) | 2022-07-25 | 2022-07-25 | Chlorinated polyvinyl chloride pipe inner cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217670992U (en) |
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2022
- 2022-07-25 CN CN202221929905.3U patent/CN217670992U/en active Active
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