CN101870396B - Metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and production method thereof - Google Patents
Metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and production method thereof Download PDFInfo
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- CN101870396B CN101870396B CN2010102112751A CN201010211275A CN101870396B CN 101870396 B CN101870396 B CN 101870396B CN 2010102112751 A CN2010102112751 A CN 2010102112751A CN 201010211275 A CN201010211275 A CN 201010211275A CN 101870396 B CN101870396 B CN 101870396B
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- shell
- end cap
- lined
- teflon lined
- polytetrafluoroethylene
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 23
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 23
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 239000004809 Teflon Substances 0.000 claims description 66
- 229920006362 Teflon® Polymers 0.000 claims description 66
- 239000000853 adhesive Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 5
- 229910001651 emery Inorganic materials 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
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- Lining Or Joining Of Plastics Or The Like (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and a production method thereof. The invention provides the following technical proposal: a metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus comprises a vessel cylinder and polytetrafluoroethylene liners arranged inside the vessel cylinder, wherein the vessel cylinder comprises an inner cavity and two openings arranged at both sides of the inner cavity, two openings of the vessel cylinder are respectively provided with end caps, the inner wall of each end cap and the inner cavity of the vessel cylinder are respectively internally coated with the polytetrafluoroethylene liners independent of each other, at least one end cap is provided with a positive pressure intake assembly, and the end caps and the vessel cylinder are respectively provided with vacuum exhaust assemblies for the conduction between the end caps and the polytetrafluoroethylene liners as well as between the vessel cylinder and the polytetrafluoroethylene liner. Adopting the above technical proposal, the invention provides a metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus preventing the formation of gaps and bubbles between the vessel cylinder and the liners and having liners and the metal vessel tightly adhered to each other, and a production method thereof.
Description
Technical field
The present invention relates to a kind of chemical anticorrosion pressure-resistant equipment, particularly a kind of metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the and working method thereof.
Background technology
At present, the container inner wall that is used to place chemical medium on market and the data very easily receives corrosion damage, and the technical personnel in this field adopts the lining of anti-rot plastic as container usually.
The anti-rot plastic lining is extensively transported in industry-by-industry as effective anticorrosive measure of pipeline, container.Common way is with the complete main body covered lining face that needs of anti-rot plastic lining, thus the formation anti-corrosion protection.
In the course of processing; Usually need carry out clean to the inside face of the multiple metal with PTFE container of need lining; Present clean only is confined to the inside face of can is removed the processing of greasy dirt and rusty stain, and then lays adhesive agent, and combining of teflon lined and can is stable inadequately; Bond strength is not enough, can cause teflon lined and can inwall to be peeled off; When teflon lined with after can combines, be close to for making teflon lined and can inwall, need be to pressurizeing in the can; Though pressurization back teflon lined and can have obtained being close to; But in this process, can there be air between teflon lined and the can, behind the air expanded by heating; Make to produce between teflon lined and the can and peel off, very likely cause teflon lined to lose due effect.
Summary of the invention
To the deficiency that prior art exists, the invention provides a kind of prevent to exist between can and the liner gap, bubble, liner and can metal tightly-lined closely polytetrafluoroethylene equipment of anti-positive and negative pressure of applying and working method thereof.
For realizing above-mentioned purpose; The invention provides following technical scheme: a kind of metal tightly-lined polytetrafluoroethylene equipment of anti-the positive and negative pressure; Include shell and be located at the teflon lined in the shell; Described shell includes inner chamber and is located at two openings of its inner chamber both sides; Said shell two opening parts are respectively equipped with end cap; Be laid with relatively independent teflon lined respectively in the inner chamber of described each end cap inwall and shell; Be connected through flange between each end cap and the shell, the teflon lined between the joining place of end cap and shell constitutes sealing towards shell flange face upper overturning respectively, and described at least one end cap is provided with the malleation air intake assembly; Be respectively equipped with the vacuum exhaust assembly that reaches conducting between shell and the teflon lined between end cap and the teflon lined on each end cap and the shell; At least be provided with an arm on the described end cap, the opening part of arm be provided with butt flange and with the pressing sealing flange of the overlapping setting of butt flange, described teflon lined is stretched between butt flange and the pressing sealing flange and fits to constitute with the internal face of butt flange and pressing sealing flange and seals.
Adopt technique scheme; Teflon lined flange between end cap and the shell can make the joining place sealing of end cap and shell; The setting of malleation air intake assembly then can make teflon lined be layed on shell and the end cap and utilize air pressure that it is pushed, thereby makes teflon lined to fit tightly with shell and end cap; The setting of vacuum exhaust assembly then is in order to extract the residual air between teflon lined and shell and the end cap, thereby preventing to produce between teflon lined and shell and the end cap peels off and have influence on service life of entire equipment.
The present invention further is set to: but the malleation air intake assembly is to be located at can seal on the end cap and the malleation hole of conducting, but described vacuum exhaust assembly can seal on two end cap and the shell and the vacuum hole of conducting for being located at respectively.
Adopt technique scheme, be provided with simple in structure, easy to process like this.
A kind of working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-the positive and negative pressure is characterized in that: step is following:
1) shell of processing hollow reaches and the adaptive end cap of shell; With shell inner chamber and the sandblast of end cap inwall or emery wheel polishing, and be provided with the malleation air intake assembly of shell inner chamber conducting on the end cap and the vacuum exhaust assembly is being set on shell and end cap;
2) shell and the processing polytetrafluoroethylregenerated lining of end cap inner wall shape in 1 set by step carry out modification with the faying face of teflon lined and shell and end cap and handle;
3) evenly smear adhesive agent between shell, end cap and the teflon lined with processing in step 1 and the step 2;
4) teflon lined that machines is laid to shell and end cap inwall;
5) shell that is equipped with teflon lined in the step 4 and end cap are inserted in the professional heating device; Utilize the malleation air intake assembly to shell inner chamber pressurization and utilize the vacuum exhaust assembly that interlayer between shell and end cap and the teflon lined is extracted air then; And implement to heat; Heating-up temperature is 150-180 ℃, and time of heat is 3-4hr.
6), treat after its cooling malleation air intake assembly and vacuum exhaust assembly to be sealed with shell that is equipped with teflon lined and the end cap natural cooling through heating in the step 5.
Wherein, adhesive agent is that bi-component is epoxy binder modified.
Wherein, shell and the processing polytetrafluoroethylregenerated lining of end cap inner wall shape in 1 set by step carry out sodium with the faying face of teflon lined and shell and end cap and how to handle.
Wherein, lay adhesive agent on the faying face with the teflon lined of processing in the step 2 and shell and end cap.
With the anti-positive and negative pressure apparatus in comparison of existing metal tightly-lined polytetrafluoroethylene; The present invention has carried out sandblast or emery wheel polishing to its inwall when process vessel cylindrical shell and end cap; The lining of shell and end cap is met personally " in vain ", improve its degree of finish, help the bonding of adhesive agent.And shell and end cap integral body heated; And in heating, it is carried out the malleation extruding and utilizes the vacuum exhaust assembly air in the interlayer to be carried out the extraction of negative pressure through the malleation air intake assembly; Can not only make adhesive agent impel teflon lined and shell and end cap to fit through heating; And in this process, also the residual air in teflon lined and shell and the end cap interlayer is got rid of; For the applying between between teflon lined and shell and the end cap provides guarantee, thereby prolonged the service life of entire equipment.
Below in conjunction with accompanying drawing the present invention is further described:
Description of drawings
Fig. 1 is the structural representation in the embodiment of the invention;
Fig. 2 is the I portion enlarged drawing of Fig. 1;
Fig. 3 is the scheme drawing of embodiment of the invention heating, pressurization, exhaust.
The specific embodiment
Like Fig. 1-a kind of metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the shown in Figure 3; Include shell 1 and be located at the teflon lined 2 in the shell 1; Described shell 1 includes inner chamber 11 and is located at two openings 12 of its inner chamber 11 both sides; 1 liang of opening 12 place of said shell are provided with end cap 3 respectively; Be laid with relatively independent teflon lined 2 respectively in the inner chamber 11 of described each end cap 3 inwall 31 and shell 1, be connected through flange 4 between each end cap 3 and the shell 1, the teflon lined 2 between the joining place of end cap 3 and shell 1 constitutes sealing towards shell 1 flange face upper overturning respectively; Teflon lined 2 flange between end cap 3 and the shell 1 can make the end cap 3 and the joining place of shell 1 seal; And at least one end cap 3 is provided with malleation air intake assembly 5, be respectively equipped with between end cap 3 and the teflon lined 2 on each end cap 3 and the shell 1 and shell 1 and teflon lined 2 between the vacuum exhaust assembly 6 of conducting; At least be provided with an arm 8 on the end cap 3; The opening part of arm 8 be provided with butt flange 81 and with the pressing sealing flange 82 of butt flange 81 overlapping settings; Described teflon lined 2 is stretched between butt flange 81 and the pressing sealing flange 82 and fits with the internal face of butt flange and pressing sealing flange and constitutes sealing; Need to prove that the stretching of teflon lined 2 is through just enforceable after the heating.Being provided with of above-mentioned malleation air intake assembly 5 can make things convenient for teflon lined 2 to be layed on shell 1 and the end cap 2 back air pressure to the extruding of teflon lined 2 in-to-ins, thereby makes teflon lined 2 to fit tightly with shell 1 and end cap 3; The setting of vacuum exhaust assembly 6 then is the air that extracts for ease between teflon lined 2 and shell 1 and the end cap 3, thereby prevents between teflon lined 2 and shell 1 and the end cap 3 to produce bubble and the effect that has influence on teflon lined 2.
In embodiments of the present invention, but malleation air intake assembly 5 can seal on the end cap 3 and the malleation hole 51 of conducting for being located at, but described vacuum exhaust assembly 6 can seal on two end cap 3 and the shell 1 and the vacuum hole 61 of conducting for being located at respectively.
A kind of working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-the positive and negative pressure is characterized in that: step is following:
1) shell 1 of processing hollow and the end cap 3 adaptive with shell 1; With shell 1 inner chamber 11 and end cap 3 inwalls, 31 sandblasts or emery wheel polishing, and be provided with the malleation air intake assembly 5 of shell 1 inner chamber 11 conductings on the end cap 3 and on shell 1 and end cap 3, vacuum exhaust assembly 6 be set;
2) shell 1 and the processing polytetrafluoroethylregenerated lining 2 of end cap 3 inwalls 31 shapes in 1 set by step carry out modification with the faying face of teflon lined 2 and shell 1 and end cap 3 and handle;
3) evenly smear adhesive agent between shell 1, end cap 3 and the teflon lined 2 with processing in step 1 and the step 2;
4) teflon lined that machines 2 is laid to shell 1 and end cap 3 inwalls 31;
5) shell that is equipped with teflon lined 2 in the step 41 and end cap 3 are inserted in the professional heating device 7; Utilize the pressurization of 5 pairs of shells of malleation air intake assembly, 1 inner chamber 11 then and utilize that interlayer 8 extracts air between 5 pairs of shells 1 of vacuum exhaust assembly and end cap 3 and the teflon lined 2; And implement to heat; Heating-up temperature is 150-180 ℃, and time of heat is 3-4hr.
6), treat after its cooling malleation air intake assembly 5 and vacuum exhaust assembly 6 to be sealed with shell that is equipped with teflon lined 21 and end cap 3 natural cooling through heating in the step 5.
Need to prove that in embodiments of the present invention, described adhesive agent selects for use bi-component epoxy binder modified, this adhesive bonds dynamics is strong, and adhesive technology is simple, and is easy to use, and gummed part stress is little, and basic nonhazardous; Certainly, also can select other reagent for use, like the resin fibre layer, also be feasible.And in the above-mentioned steps 3, it all is feasible on shell 1 and end cap 3 or teflon lined 2, brushing and establishing adhesive agent, and it also is feasible brushing simultaneously certainly and establishing adhesive agent.
In embodiments of the present invention, shell 1 and the processing polytetrafluoroethylregenerated lining 2 of end cap 3 inner wall shape in 1 set by step, the set face of teflon lined 2 and shell 1 and end cap 3 carries out modification and selects for use sodium how to handle.And the professional heating device in the embodiment of the invention 7 is a heating furnace.
Claims (6)
1. metal tightly-lined polytetrafluoroethylene equipment of anti-the positive and negative pressure; Include shell and be located at the teflon lined in the shell; Described shell includes inner chamber and is located at two openings of its inner chamber both sides; It is characterized in that: said shell two opening parts are respectively equipped with end cap; Be laid with relatively independent teflon lined respectively in the inner chamber of described each end cap inwall and shell; Be connected through flange between each end cap and the shell, the teflon lined between the joining place of end cap and shell constitutes sealing towards shell flange face upper overturning respectively, and described at least one end cap is provided with the malleation air intake assembly; Be respectively equipped with the vacuum exhaust assembly that reaches conducting between shell and the teflon lined between end cap and the teflon lined on each end cap and the shell; At least be provided with an arm on the described end cap, the opening part of arm be provided with butt flange and with the pressing sealing flange of the overlapping setting of butt flange, described teflon lined is stretched between butt flange and the pressing sealing flange and fits to constitute with the internal face of butt flange and pressing sealing flange and seals.
2. the metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the according to claim 1; It is characterized in that: but described malleation air intake assembly is to be located at can seal on the end cap and the malleation hole of conducting, but described vacuum exhaust assembly can seal on two end cap and the shell and the vacuum hole of conducting for being located at respectively.
3. the working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-the positive and negative pressure, it is characterized in that: step is following:
1) shell of processing hollow reaches and the adaptive end cap of shell; With shell inner chamber and the sandblast of end cap inwall or emery wheel polishing, and be provided with the malleation air intake assembly of shell inner chamber conducting on the end cap and the vacuum exhaust assembly is being set on shell and end cap;
2) shell and the processing polytetrafluoroethylregenerated lining of end cap inner wall shape in 1 set by step carry out modification with the faying face of teflon lined and shell and end cap and handle;
3) evenly smear adhesive agent between shell, end cap and the teflon lined with processing in step 1 and the step 2;
4) teflon lined that machines is laid to shell and end cap inwall;
5) shell that is equipped with teflon lined in the step 4 and end cap are inserted in the professional heating device; Utilize the malleation air intake assembly to shell inner chamber pressurization and utilize the vacuum exhaust assembly that interlayer between shell and end cap and the teflon lined is extracted air then; And implement to heat; Heating-up temperature is 150-180 ℃, and time of heat is 3-4hr.
6), treat after its cooling malleation air intake assembly and vacuum exhaust assembly to be sealed with shell that is equipped with teflon lined and the end cap natural cooling through heating in the step 5.
4. the working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the according to claim 3 is characterized in that: described adhesive agent is that bi-component is epoxy binder modified.
5. the working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the according to claim 3; It is characterized in that: shell and the processing polytetrafluoroethylregenerated lining of end cap inner wall shape in 1 set by step, carry out sodium with the faying face of teflon lined and shell and end cap and how to handle.
6. the working method of the metal tightly-lined polytetrafluoroethylene equipment of anti-positive and negative pressure the according to claim 3 is characterized in that: lay adhesive agent on the faying face with the teflon lined of processing in the step 2 and shell and end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102112751A CN101870396B (en) | 2010-06-24 | 2010-06-24 | Metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102112751A CN101870396B (en) | 2010-06-24 | 2010-06-24 | Metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101870396A CN101870396A (en) | 2010-10-27 |
| CN101870396B true CN101870396B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102112751A Expired - Fee Related CN101870396B (en) | 2010-06-24 | 2010-06-24 | Metal tightly-lined polytetrafluoroethylene positive/negative pressure resistant apparatus and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104343975B (en) * | 2014-10-15 | 2017-02-01 | 湖北中孚化工集团有限公司 | Use method for negative pressure tank body with lining part under negative pressure |
| CN105697775A (en) * | 2016-03-11 | 2016-06-22 | 无锡锡洲封头制造有限公司 | Pressure vessel end socket capable of being added with pressure block |
| CN112611645A (en) * | 2020-12-30 | 2021-04-06 | 青岛同创管道系统有限公司 | Groove type pipe fitting pressure testing method |
| CN113062980B (en) * | 2021-05-11 | 2022-04-22 | 齐泽民 | PTFE lining pressure container and manufacturing method thereof |
| CN114311772A (en) * | 2021-12-31 | 2022-04-12 | 宁夏金梯氟塑防腐设备有限公司 | Method for manufacturing polytetrafluoroethylene anticorrosion equipment and polytetrafluoroethylene anticorrosion equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL43159A (en) * | 1972-09-27 | 1975-10-15 | Pampus Kg | A vessel for corrosive liquids |
| FR2427968A1 (en) * | 1978-06-06 | 1980-01-04 | Automatisme Cie Gle | Enclosure for corrosive fluids such as sulphur di:oxide - has lateral walls, base and cover each lined with plastic material internally and provided with flanges for assembly by riveting |
| CN201362738Y (en) * | 2009-01-22 | 2009-12-16 | 昆明鸿世达高技术材料有限责任公司 | Special heating kettle for producing high-purity arsenic |
| CN201703780U (en) * | 2010-06-24 | 2011-01-12 | 温州市氟塑设备制造厂 | Metal lining polytetrafluoroethylene positive-negative pressure resisting device |
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| CN101870396A (en) | 2010-10-27 |
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Granted publication date: 20120111 |