CN110978459A - Plastic pipe fitting cooling device and method - Google Patents
Plastic pipe fitting cooling device and method Download PDFInfo
- Publication number
- CN110978459A CN110978459A CN201911394900.8A CN201911394900A CN110978459A CN 110978459 A CN110978459 A CN 110978459A CN 201911394900 A CN201911394900 A CN 201911394900A CN 110978459 A CN110978459 A CN 110978459A
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- China
- Prior art keywords
- cooling
- pipe
- water
- cooling ring
- inlet pipe
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1658—Cooling using gas
- B29C2035/1666—Cooling using gas dried air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a plastic pipe fitting cooling device which comprises a water inlet pipe, an air inlet pipe and a cooling ring, wherein one end of the air inlet pipe is communicated with the outer wall of the cooling ring, one end of the air inlet pipe is communicated with the side wall of the water inlet pipe, and the inner wall of the cooling ring is provided with a plurality of spray heads along the radial direction; a plastic pipe cooling method is also provided, based on the use of the plastic pipe cooling device. The invention can cool the plastic pipe fitting to be cooled along the circumferential direction, eliminates the circumferential cold and hot unevenness of the extrusion pipe, and reduces the circumferential strain and the thermal stress caused by the cold and hot unevenness of expansion and contraction, thereby obviously improving the strength and the rigidity of the pipe, sufficiently improving the longitudinal retraction rate and effectively improving the performance of the plastic pipe fitting.
Description
Technical Field
The invention relates to the field of plastic pipe fitting processing, in particular to a plastic pipe fitting cooling device and method.
Background
The cooling method adopted by the commonly used cooling device at present mainly comprises two steps: an air cooling mode and a water cooling mode; the water cooling mode is that water is directly sprayed on the surface of the plastic pipe fitting to be cooled, at the moment of cooling, the cooling amount is different in the circumferential direction of the pipe, a part facing the water pipe is provided with a lot of water, the cooling is sufficient, and the part departing from the water pipe is not cooled because no cooling water overflows in a short time. The cooled part and the uncooled part have local temperature difference, and the strain of each part is different due to expansion and contraction, and the thermal stress is different, thereby affecting the performance of the material. The current air cooling mode is that the fan is directly used for blowing air, and the heat of the cooling piece is taken away through the contact of the air and the surface of the cooling piece, so that the cooling process is slow, and the cooling can be carried out in a long time. And because the windward side and the leeward side are in contact with different air volumes, the obvious cooling degree is different, so that the cooling part has residual stress.
The existing technical means also comprises the steps of spraying water and then blowing air for cooling, but the air quantity and the water quantity which are contacted with the front surface and the back surface of the plastic pipe fitting are still different, and the obvious cooling degrees are different, so that the cooling part has residual stress and the performance of the molded plastic pipe fitting is influenced.
Disclosure of Invention
The invention provides a plastic pipe cooling device and a method for overcoming the problems that the cooling piece has residual stress and the performance of a formed plastic pipe is influenced because the air quantity and the water quantity contacted with the front surface and the back surface of the plastic pipe are still different and the obvious cooling degrees are different in the background technology.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a plastics pipe fitting cooling device, includes inlet tube, intake pipe and cooling ring, intake pipe one end with the outer wall switch-on of cooling ring, inlet tube one end switch-on is in on the lateral wall of inlet tube, the inner wall of cooling ring is equipped with a plurality of shower nozzles along circumference, and the shower nozzle is facing to the centre of a circle of cooling ring. Thus, one end of the water inlet pipe is connected with the cooling ring and communicated with the outer side wall of the cooling ring, the side wall of the water inlet pipe is additionally provided with the air inlet pipe, a to-be-cooled part is arranged in the cooling ring in the cooling process, the inner wall of the cooling ring is provided with a plurality of spray heads, when water enters from the water inlet pipe and the air inlet pipe simultaneously enters, a mixture of bubbles and water can be formed in the cooling ring, the bubbles can damage a boundary layer on a pipe fitting, the mixture of the boundary layer and a non-boundary layer is increased, the heat transfer can be further enhanced, the temperature of the boundary layer is reduced, the spray heads are distributed along the inner wall of the cooling ring, the plastic pipe fitting to be cooled can be cooled along the circumferential direction, the cold and hot unevenness of the circumferential direction of the extrusion pipe is eliminated, the circumferential direction strain and the thermal stress caused by cold and cold shrinkage due to the cold and hot unevenness are reduced, effectively improve the performance of the plastic pipe fitting.
Furthermore, the water inlet pipe is a straight pipe, and the air inlet pipe is a multi-section bent pipe. Like this, when the inlet tube is the straight tube, when the cooling operation, water is along the vertical downward of direction of gravity, and it is more smooth and easy that the flow gets up, also can not flow in the intake pipe, and the intake pipe is the curved tube of multistage, and the air inlet of intake pipe also is on the mouth that converges of intake pipe and inlet tube, can make the gas flow rate of entering slow down, after converging with the inlet tube, forms the bubble in the cooling ring more easily.
Furthermore, the cooling ring is an unclosed circular ring, and one end of the cooling ring, which is far away from the water inlet pipe, is provided with a gap. Like this, the cooling ring is an unclosed ring, and when whole device was placed perpendicularly, during water got into the interface at cooling ring top from the inlet tube, flowed into in the cooling ring from both sides, when the cooling ring below, because the cooling ring is unclosed, the liquid on both sides then does not switch on, sets up a sealed lid in both sides, then can put the residual water yield in the cooling ring completely after the operation is accomplished.
Furthermore, the spray heads are conical, the large opening ends of the conical spray heads are connected to the inner wall of the cooling ring, and the distances from the small opening ends of the spray heads to the circle center of the cooling ring are equal. Therefore, the nozzle has certain taper, but the small end of the nozzle still has certain inner diameter, so that bubbles can be sprayed out, and the cooling effect is not influenced by spraying water flow with higher flow speed; and the shower nozzle evenly distributed is at the inner wall of cooling ring, can cool off from waiting to cool off the circumference of plastics pipe fitting evenly, and the cooling effect is better.
Furthermore, the water inlet pipe, the air inlet pipe and the cooling ring are all made of plastic materials. Therefore, the whole device is made of plastic materials, the materials are lighter, the use is convenient, and the manufacturing cost is lower.
Further, the number of the spray heads ranges from 7 to 13. In this way, a better layout is possible with a number of spray heads of 7 to 13, and it is also possible to cover the entire surface of the plastic pipe entirely.
The plastic pipe cooling device based on the plastic pipe cooling method further comprises the following steps:
s1, placing a plastic pipe fitting to be cooled in a ring of the cooling ring;
s2, connecting the other end of the water inlet pipe through a water conveying device, and connecting the other end of the air inlet pipe through an air conveying device;
s3, water is conveyed into the water inlet pipe through the water conveying device, gas is conveyed into the air inlet pipe through the gas conveying device, then a gas-water mixture is formed in the cooling ring, and the size range of the gas-water volume ratio of the gas-water mixture is 1: 28 to 1: 4;
s4, spraying the gas-water mixture on the surface of the plastic pipe fitting to be cooled through a spray head;
and S5, blowing the to-be-cooled plastic pipe fitting sprayed with the air-water mixture through a blowing device.
The key point of the method is that after gas and water are respectively input into the gas inlet pipe and the water inlet pipe through the gas transmission device and the water transmission device, a certain amount of mixture of bubbles and water can be formed in the cooling ring, the proportion of the gas to the water is 1/28-1/4, and the cooling effect is better.
Compared with the prior art, the beneficial effects are:
1. when the inlet tube intake, when the intake pipe admits air simultaneously, can form the mixture of bubble and water in the cooling ring, the bubble can destroy the boundary layer on the tubular product pipe fitting, increase the mixture of boundary layer and non-boundary layer, can further strengthen the heat transfer, reduce the temperature of boundary layer, the shower nozzle distributes along the inner wall of cooling ring, can cool off from the circumference of treating cooling plastic pipe spare, the cold and hot inequality of extrusion pipe circumference has been eliminated, circumferential strain and the thermal stress because of cold and hot uneven expend with heat and contract with cold and lead to have been reduced, thereby can obviously improve the intensity and the rigidity of pipe, also there is sufficient improvement on vertical retraction rate, effectively improve the performance of plastic pipe spare.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1
The embodiment provides a plastic pipe cooling device. As shown in fig. 1, the plastic pipe fitting cooling device comprises a water inlet pipe 1, an air inlet pipe 2 and a cooling ring 3, wherein one end of the water inlet pipe 1 is communicated with the outer wall above the cooling ring 3, one end of the lower part of the air inlet pipe 2 is communicated with the side wall of the water inlet pipe 1, and 7 spray heads 4 are arranged on the inner wall of the cooling ring 3 along the radial direction; the water inlet pipe 1 is a straight pipe, and the air inlet pipe 2 is a multi-section bent pipe. The cooling ring 3 is a non-closed sealing ring, the cooling ring 3 is not closed below to form a gap 6, sealing covers 5 are arranged on two sides of the gap 6, and residual water in the cooling ring 3 can be completely discharged by opening the sealing covers 5.
In this embodiment, the spray heads 4 are conical, the large opening ends of the conical spray heads 4 are connected to the inner wall of the cooling ring 3, and the distances from the small opening ends of the spray heads 4 to the circle center of the cooling ring 3 are equal. The water inlet pipe 1, the air inlet pipe 2 and the cooling ring 3 are all made of plastic materials.
During cooling operation, because the water inlet pipe 1 is a straight pipe, water entering the water inlet pipe 1 vertically downwards along the gravity direction flows more smoothly and does not flow into the air inlet pipe 2, the air inlet pipe 2 is a multi-section bent pipe, and an air inlet of the air inlet pipe 2 is also arranged above a converging port of the air inlet pipe 2 and the water inlet pipe 1, so that the flow rate of the entering gas can be slowed down, and bubbles can be more easily formed in the cooling ring 3 after the gas is converged with the water inlet pipe 1; cooling ring 3 is a not closed ring, and when whole device was placed perpendicularly, during water got into the interface at cooling ring 3 top from inlet tube 1, flowed into cooling ring 3 from both sides, when cooling ring 3 below, because cooling ring 3 is not sealed, the liquid on both sides then does not switch on, sets up a sealed lid 5 in both sides, then can put the residual water yield in cooling ring 3 completely after the operation is accomplished. The nozzle 4 has a certain taper, but the small end of the nozzle still has a certain inner diameter, so that bubbles can be sprayed out, and the cooling effect is not influenced by spraying water flow with a higher flow speed; and shower nozzle 4 evenly distributed is at the inner wall of cooling ring 3, can cool off from waiting to cool off plastics pipe fitting's circumference uniformly, and the cooling effect is better. One end of the water inlet pipe 1 is connected to the cooling ring 3 and communicated with the outer side wall of the cooling ring 3, an air inlet pipe 2 is additionally arranged on the side wall of the water inlet pipe 1, a to-be-cooled part is arranged in the cooling ring 3 in the cooling process, a plurality of spray heads 4 are arranged on the inner wall of the cooling ring 3, when the water inlet pipe 1 is filled with water and the air inlet pipe 2 is filled with air simultaneously, a mixture of bubbles and water can be formed in the cooling ring 3, the bubbles can damage a boundary layer on a pipe fitting, the mixture of the boundary layer and a non-boundary layer is increased, the heat transfer can be further enhanced, the temperature of the boundary layer is reduced, the spray heads 4 are distributed along the inner wall of the cooling ring 3, the plastic pipe fitting to be cooled can be cooled in the circumferential direction, the circumferential uneven cooling and heating of the extruded pipe in the circumferential direction is eliminated, the circumferential strain and the thermal stress caused by uneven cooling and thermal expansion and contraction are reduced, the, effectively improve the performance of the plastic pipe fitting.
Example 2
The embodiment provides a plastic pipe cooling method, which is based on the plastic pipe cooling device in embodiment 1, and comprises the following steps:
s1, placing a plastic pipe fitting to be cooled in a ring of the cooling ring 3;
s2, connecting the other end of the water inlet pipe 1 through a water conveying device, and connecting the other end of the air inlet pipe 2 through an air conveying device;
s3, go through water delivery device and go carry out the water delivery in inlet tube 1, simultaneously go through gas delivery device and go carry out the gas transmission in intake pipe 2, then form the air water mixture in cooling ring 3, the size of the air water volume ratio of air water mixture is 1: 12;
s4, spraying the gas-water mixture on the surface of the plastic pipe fitting to be cooled through a spray head 4;
and S5, blowing the to-be-cooled plastic pipe fitting sprayed with the air-water mixture through a blowing device.
The key point of the embodiment is that after gas and water are respectively input into the gas inlet pipe 2 and the water inlet pipe 1 through the gas transmission device and the water transmission device, a certain amount of mixture of bubbles and water can be formed in the cooling ring 3, the bubbles can damage a boundary layer on a pipe fitting, the mixture of the boundary layer and a non-boundary layer is increased, the heat transfer can be further enhanced, the temperature of the boundary layer is reduced, the spray heads 4 are distributed along the inner wall of the cooling ring 3, the plastic pipe fitting to be cooled can be cooled in the circumferential direction, the circumferential cold and hot unevenness of the extruded pipe is eliminated, the circumferential strain and the thermal stress caused by the cold and hot uneven thermal expansion and contraction are reduced, the strength and the rigidity of the pipe can be obviously improved, the longitudinal retraction rate is sufficiently improved, and the performance of the plastic pipe fitting is effectively improved; and when the gas-water ratio is 12, the cooling effect is better.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a plastics pipe fitting cooling device, its characterized in that, includes inlet tube, intake pipe and cooling ring, inlet tube one end with the outer wall switch-on of cooling ring, intake pipe one end switch-on is in on the lateral wall of inlet tube, the inner wall of cooling ring is equipped with a plurality of shower nozzles along circumference.
2. The plastic pipe cooling device as claimed in claim 1, wherein the inlet pipe is a straight pipe and the inlet pipe is a multi-segment curved pipe.
3. A plastic pipe cooling device as claimed in claim 1, wherein the cooling ring is an unclosed ring, and a gap is left at an end of the cooling ring away from the water inlet pipe.
4. The plastic pipe cooling device as claimed in claim 1, wherein the nozzles are conical, the large opening ends of the conical nozzles are connected to the inner wall of the cooling ring, and the distances from the small opening ends of the nozzles to the center of the cooling ring are equal.
5. The plastic pipe cooling device as claimed in claim 1, wherein the inlet tube, the inlet tube and the cooling ring are made of plastic material.
6. A cooling device for plastic pipes according to claim 1 or 4, characterized in that the number of spray heads ranges from 7 to 13.
7. A method for cooling plastic pipes, based on the plastic pipe cooling device of any one of claims 1 to 6, comprising the steps of:
s1, placing a plastic pipe fitting to be cooled in a ring of the cooling ring;
s2, connecting the other end of the water inlet pipe through a water conveying device, and connecting the other end of the air inlet pipe through an air conveying device;
s3, water is conveyed into the water inlet pipe through the water conveying device, gas is conveyed into the air inlet pipe through the gas conveying device, then a gas-water mixture is formed in the cooling ring, and the size range of the gas-water volume ratio of the gas-water mixture is 1: 28 to 1: 4;
s4, spraying the gas-water mixture on the surface of the plastic pipe fitting to be cooled through a spray head;
and S5, blowing the to-be-cooled plastic pipe fitting sprayed with the air-water mixture through a blowing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394900.8A CN110978459A (en) | 2019-12-30 | 2019-12-30 | Plastic pipe fitting cooling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394900.8A CN110978459A (en) | 2019-12-30 | 2019-12-30 | Plastic pipe fitting cooling device and method |
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| Publication Number | Publication Date |
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| CN110978459A true CN110978459A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911394900.8A Pending CN110978459A (en) | 2019-12-30 | 2019-12-30 | Plastic pipe fitting cooling device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494322A (en) * | 2023-06-27 | 2023-07-28 | 常州天晟紫金自动化设备有限公司 | Organic silica gel cutting and conveying all-in-one machine capable of effectively reducing temperature |
-
2019
- 2019-12-30 CN CN201911394900.8A patent/CN110978459A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494322A (en) * | 2023-06-27 | 2023-07-28 | 常州天晟紫金自动化设备有限公司 | Organic silica gel cutting and conveying all-in-one machine capable of effectively reducing temperature |
| CN116494322B (en) * | 2023-06-27 | 2023-09-19 | 常州天晟紫金自动化设备有限公司 | Organic silica gel cutting and conveying all-in-one machine capable of effectively reducing temperature |
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