CN106217805B - Negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line - Google Patents
Negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line Download PDFInfo
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- CN106217805B CN106217805B CN201610656600.2A CN201610656600A CN106217805B CN 106217805 B CN106217805 B CN 106217805B CN 201610656600 A CN201610656600 A CN 201610656600A CN 106217805 B CN106217805 B CN 106217805B
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- cooler
- solenoid valve
- liquid level
- level box
- filter
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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
- B29C48/27—Cleaning; Purging; Avoiding contamination
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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
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/763—Vent constructions, e.g. venting means avoiding melt escape
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of negative pressure cleaning systems for the auxiliary extruder vacuum system cooler of film line, including cooler, filter, the first liquid level box, pump and the second liquid level box, cooler drain pipe is connect by the first solenoid valve with filter, filter is connect by second solenoid valve with the first liquid level box, first liquid level box is connected by being pumped into the import of solenoid valve and pump, the outlet of the pump is connect by pumping out solenoid valve with the second liquid level box all the way, and another way passes sequentially through hydrojet solenoid valve and hydrojet flow control valve is connect with the mouth spray in flange end cap；Second liquid level box is connected to by being connected to solenoid valve with the inner cavity of cooler body；The outlet of second liquid level box is connect by overflow solenoid valve with filter all the way, and another way is connect by instillation solenoid valve and instillation flow control valve with the drip solution mouth in flange end cap；The present invention can keep cooler cooling work face relatively clean, and cooling performance is relative constant, have self-cleaning function, reduce manual labor amount.
Description
Technical field
It is especially a kind of for the auxiliary extruder vacuum system cooler of film line the present invention relates to film line
Negative pressure cleaning system.
Background technology
Currently, the well known auxiliary extruder vacuum system of PET film production line is by vacuum (-tight) housing, cooler, filter, Roots
Wind turbine, oil water separator, screw pump, connecting tube and solenoid valve block at.It is right in the operating temperature of 270 DEG C of auxiliary extruder system
It is evaporated in the melt and dissolved material of phthalic acid ethylene glycol fat, with small molecule and vapor mixed gas as the main component, by vacuum
The vacuum (-tight) housing of system actively keeps the temperature connecting tube to 250 DEG C through electrical heating, is cooled down into cooler, mixed air after cooling
The connecting tube of the active heat preservation through electrical heating to 180 DEG C and solenoid valve enter filter to body again, and filter flow channel cross-section product is prominent
It so increases, reduced velocity flow, filter mixes gas natural cooling, temperature further declines, in mixed gas without Insulation
Small molecule is condensed into tiny free state dust, and filters off in the filter, and remaining main ingredient is the gaseous mixture of vapor
Body is connected by connecting tube and solenoid valve with roots blower, and vacuumizing power by roots blower offer level-one is aspirated, gas warp
Water-cooling type oil separator oil-water separation, then provide after two level vacuumizes power isolated at suction grease and be discharged through screw pump.Vacuum
The pressure of system is absolute pressure 5mbar, about 0.005 atmospheric pressure, i.e., the vacuum degree of -0.995 atmospheric pressure, with this
Impurity in the melt and dissolved material of auxiliary extruder is removed, providing reliable production for production line downstream process ensures.
The design structure and operation principle of wherein cooler be：Cooler is to be cooled down with inside center coldplate, and shunt
Gas, changes the flow direction of gas, and circular outer wall is the active heat preservation that electricity consumption is heated to 180 DEG C.Top is flange connection
Round end cap seals, and has the connection of cooling water inlet/outlet pipe on end cap, and be connected with the inside center coldplate of cooler, inseparable
From.Bottom is the liquid collecting bucket of flange connection, and liquid collecting bucket bottom has drain pipe and connection valve, the gas flow section of cooler narrow
It is narrow, it is suitable with the disengaging gas flow section of cooler connecting tube, very fast gas flow rate is formed with this.Mixed gas is cold in entrance
But device cool down when, vapor is condensed into water and falls into liquid collecting bucket, and small molecule is condensed into tiny free state dust, follow flow velocity compared with
Fast gas, the connecting tube of the active heat preservation through electrical heating to 220 DEG C and solenoid valve enter filter.
But under vacuum system 5mbar absolute pressures, negative pressure makes 270 DEG C in auxiliary extruder system of terephthalic acid (TPA)
Macromolecular gasification point in the melt and dissolved material of ethylene glycol fat is reduced and is evaporated, this make mixed gas composition be not only small molecule and
Vapor, also a small amount of macromolecular.When mixed gas containing gasification macromolecular enters cooler, gaseous macromolecular solidification
Zero point is high, and rapid condensation is at solid when by 180 DEG C of cooler.Since gas flow rate is fast, circular outer wall is electricity
Heating is actively kept the temperature, small with the mixed gas temperature difference, and therefore, molecule is to be frozen into solid in the contact of center coldplate, from level to level
Condensation attachment cooler inner wall, constantly reduces cooling effect of cooler, until blocking cooler.Contact solidification attachment from level to level
Dirt, close structure, quality are solid.Blocked cooler changes the flow regime for mixing gas and cooler is made to lose work
Make function, until blocking cooler gas runner.Prevent vacuum system from working, influences production run.
Reliable guarantee is provided for the production of production line downstream process, often to stop production line and blocking is stain by machine maintenance cleaning
Inside cooler, since the inside center coldplate of top end cover and cooler is connected, structure bulky is not easy to remove.Use
Cucurbit suspender pulls out, but has close structure, and big adhesive force pollutant contact solidification attachment can also be difficult to pull out.Therefore from cold
But dismounting cleaning cooler is time-consuming, laborious at the top of plate.So machine maintenance generally cleaning when, bulky cooler collection can only be removed
Liquid bucket, is cleared up from lower part.The cooler lower part terrain clearance for removing cooler liquid collecting bucket is small, shorter than the long and narrow gas of cooler
Runner, therefore when being cleared up with simple tools such as round steel, cannot be cleaned at the top of the long and narrow gas flow of cooler.Machine repair personnel
Thin round steel or thin band iron can only be used, increases cleaning length with the simple tool that hand can be bent by force, cleaning is enable to reach cooler
At the top of long and narrow gas flow.But to smash the solid dirt of close structure, quality to pieces with these intensity differences, having many bends or curves simple tool
Object is contaminated, the long and narrow gas flow of the clean cooler of thorough cleaning is highly difficult, therefore the speed of machine maintenance cleaning cooler is slow, efficiency
It is very low.Again because the cooler lower part terrain clearance for removing cooler liquid collecting bucket is small, machine repair personnel can not direct mesh in cleaning
, can only be with flashlight from the cooler irradiated for removing cooler liquid collecting bucket depending on observation, the inlet being opened from cooler
Observe hand electric lights when, by gas flow when light leakage situation come judge cooler cleaning degree, therefore, cooler
The degree of cleaning out can not be grasped directly.So after cooler is cleared up in machine maintenance, the long and narrow gas flow of cooler is nor clean
, only gas flow is unimpeded.Such cooler has appeared its design defect in cleaning, lacks effective cleaning, sees
Examine working space.Clear up cooler speed is slow, efficiency is low, pay off unclean.The circular outer wall of cooler is that electricity consumption is heated to
120 DEG C of active heat preservation and the refrigerating function of cooler conflict with each other, and waste electric energy.PET production lines have two auxiliary extruders, often
The auxiliary extruder of platform respectively has a set of pumped vacuum systems, and often cover pumped vacuum systems has two sets of cooling systems again, and there are four a production lines
Cooler.When cooler is cleared up in daily machine maintenance, four coolers can all have different degrees of blocking, therefore, four coolers
It need to clear up simultaneously.Time-consuming, laborious when clearing up cooler, a machine repair personnel clears up a cooler and needs 2-3 hours, even if
Four machine repair personnels, four coolers are cleared up also be sought after 2-3 hours simultaneously, and completion could be cleared up.Clear up the cold of vacuum system
But device must stop raw line, and PET production lines day shift is only there are four machine repair personnel, and the machine maintenance human resources of occupancy are more and clearance time
It is long, increase downtime, affects production efficiency.
Invention content
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide for the auxiliary extruder vacuum of film line
The negative pressure cleaning system of systems chiller, improves existing cooler construction, and coordinates negative pressure cleaning system, using comprehensive cold
But, the mode of negative pressure wet type self-cleaning and interval hydrojet cleaning self-cleaning, is not necessarily to manual cleaning, promotes cooling effect, improve life
Produce efficiency.
The present invention adopts the following technical scheme that thus：
A kind of negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line, including cooler, mistake
Filter, the first liquid level box, pump and the second liquid level box；The cooler includes cooler body, by flanged joint in cooling
The flange end cap of device main body upper end, and the liquid collecting bucket by flanged joint in cooler body lower end；The cooler body
For the double cylinder being made of internal layer and outer layer, cooler body is interior to be equipped with cavity；Gap between the internal layer and outer layer
Cooling water jecket is constituted, and in being respectively equipped with the first cooling water inlet being connected to cooling water jecket on the outer layer of cooler body
With the first cooling water outlet, the mixed gas that connection cooler body internal cavity is additionally provided on the outer layer of the cooler body enters
The center of mouth and mixed gas outlet, the cooler body is equipped with coldplate, and cooling water flow conduits are equipped in the coldplate；Institute
State the instillation that the upper end of cooler body internal cavity is equipped at least two nozzles and is arranged along the edge of coldplate and inner layer wall
Hole slot, instillation hole slot lower end are connected with instillation guider；It is correspondingly provided in the flange end cap and is connected to instillation hole slot
Drip solution mouth, the second cooling water inlet being connected to cooling water flow conduits and the second cooling water outlet and the spray being connected to nozzle
Liquid mouth；The liquid collecting bucket lower end is equipped with drain pipe；
The drain pipe is connect by the first solenoid valve with filter, and the filter passes through second solenoid valve and the first liquid
Position case connection, first liquid level box are connected by being pumped into the import of solenoid valve and pump, and the outlet of the pump is divided into two-way, all the way
It is connect with the second liquid level box by pumping out solenoid valve, another way passes sequentially through hydrojet solenoid valve and hydrojet flow control valve and flange
Mouth spray connection on end cap；Second liquid level box is connected to by being connected to solenoid valve with the inner cavity of cooler body；Second liquid
The outlet of position case is divided into two-way, is connect all the way with filter by overflow solenoid valve, another way passes through instillation solenoid valve and instillation
Flow control valve is connect with the drip solution mouth in flange end cap.
Further, the flange end cap top is equipped with hanging ring.
Further, the filter is equipped with release ball valve and Blowoff ball valve.
Further, first liquid level box is equipped with fluid supplement solenoid valve.
Further, second liquid level box is equipped with and unloads pressure electromagnetic valve.
The beneficial effects of the present invention are：Cooler is improved to the structure of bilayer zone cooling water jecket by the present invention, is used
Comprehensive cooling work face increases cooling work area, improves cooling performance, removes the active electricity outside cooler circular body
Heating and thermal insulation, it is energy saving.Increase the instillation hole slot and instillation guider for negative pressure wet type self-cleaning simultaneously, and for interval
Hydrojet cleans the nozzle of self-cleaning, coordinates filter, pump and the liquid level box of negative pressure cleaning system, can be in comprehensive holding cooler
Portion is clean, to keep cooling performance relative constant.Further, it is ensured that cooler has self-cleaning function, reduces artificial
The amount of labour is cleaned, the production efficiency of the entire auxiliary extruder vacuum system of PET film production line is improved.
Description of the drawings
Just the specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the fundamental diagram of the auxiliary extruder vacuum system of PET film where the present invention；
Fig. 2 is the broken section structural map of existing cooler；
Fig. 3 is the broken section structural map of the cooler of the present invention；
Fig. 4 is the vertical view of the flange end cap of the cooler of the present invention；
A is the end view drawing of the instillation hole slot at coldplate edge in Fig. 5, and B is the end view drawing of the instillation hole slot at inner layer wall edge；
Fig. 6 is the total system flow chart of the present invention.
Specific implementation mode
The fundamental diagram of the existing auxiliary extruder vacuum system of PET film, the course of work shown in referring to Fig.1 are as follows：
In 270 DEG C of operating temperature, evaporated in the melt and dissolved material of terephthalate fat, with small molecule and vapor be mainly at
Part mixed gas actively keep the temperature connecting tube to 160 DEG C through electrical heating by vacuum (-tight) housing 1, vacuum (-tight) housing 2 102, into cooling
Device 1, cooler 2 104 are cooled down, after cooling to mix the gas connection that the active through electrical heating to 120 DEG C is kept the temperature again
Pipe and solenoid valve 121 and solenoid valve 120 respectively enter filter 1, filter 2 106, and filter flow channel cross-section product is prominent
It so increases, reduced velocity flow, filter mixes gas natural cooling, temperature further declines, in mixed gas without Insulation
Small molecule is condensed into tiny free state dust, and filters off in the filter, and remaining main ingredient is the gaseous mixture of vapor
Body is connected by connecting tube and solenoid valve 123, solenoid valve 124, solenoid valve 125 with roots blower 107, and one is provided by roots blower
Grade vacuumizes power and is aspirated, water cooled 108 oil-water separation of formula oil water separator of gas, then provides two level through screw pump 109
Power suction is vacuumized, then by 110 oil-water separation of oil water separator, is discharged through muffler 111, exhaust blow-down pipe 112.Vacuum system
The pressure of system is absolute pressure 5mbar, about 0.005 atmospheric pressure, i.e., the vacuum degree of -0.995 atmospheric pressure is removed with this
Remove impurity in the melt and dissolved material of auxiliary extruder.
But under vacuum system 5mbar absolute pressures, negative pressure makes 270 DEG C in auxiliary extruder system of terephthalic acid (TPA)
Macromolecular gasification point in the melt and dissolved material of ethylene glycol fat is reduced and is evaporated, this make mixed gas composition be not only small molecule and
Vapor, also a small amount of macromolecular.
With reference to existing cooler construction shown in Fig. 2, including cooler ontology 204,204 upper flanges of cooler ontology
204 and flange end cap 202 connected by bolt 211, have hanging ring 201 in flange end cap 202,204 outside of cooler ontology is arranged
There is electrical heat tracing layer 216, and be equipped with mixed gas entrance 212, mixed gas outlet 207, among 204 inner cavity of cooler ontology
Coldplate 205 is set, is coolant flow channel 206 in coldplate 205, coolant flow channel 206 is recycled with the coolant liquid in flange end cap 202
Import, outlet；204 lower end of cooler ontology by flange 208 connect liquid collecting bucket 213,213 lower end of liquid collecting bucket again by
Flange 209 seals, and drain pipe 210. is arranged
In the course of work, when entering cooler by the mixed gas containing gasification macromolecular, gaseous macromolecular solidification
Zero point is high, and rapid condensation is at solid when by 160 DEG C of cooler.Since gas flow rate is fast, and since flange joins
The cooler ontology 204 connect is that have electrical heat tracing layer 216 actively to keep the temperature, small with the mixed gas temperature difference, and therefore, molecule is cold
But the contact of device center coldplate 205 is frozen into solid, and cooler inner wall is adhered in condensation from level to level, blocks cooler.From level to level
Contact solidification attachment dirt, close structure, quality are solid.Blocked cooler changes the flow regime of mixing gas simultaneously
Cooler is set to lose the job function, until blocking cooler gas runner.Prevent vacuum system from working, influences production run.
Reliable guarantee is provided for the production of production line downstream process, often to stop production line and blocking is stain by machine maintenance cleaning
Inside cooler, since top flange end cap 202 and the inside center coldplate 205 of cooler are connected, structure bulky is not readily removable
It unloads.It uses hoist tool to pull out, but has close structure, big adhesive force pollutant contact solidification attachment can also be difficult to pull out.
Therefore it is time-consuming, laborious to dismantle cleaning cooler from cooler top flange end cap 202.So machine maintenance generally cleaning when, can only
Bulky cooler liquid collecting bucket 213 is removed, is cleared up from lower part.The cooler lower part for removing cooler liquid collecting bucket 213 is liftoff
It is highly small, the shorter than long and narrow gas flow of cooler, therefore when being cleared up with simple tools such as round steel, cooler cannot be cleaned to
At the top of long and narrow gas flow.Machine repair personnel can only use thin round steel or thin band iron, be increased with the simple tool that hand can be bent by force clear
Length is managed, cleaning is enable to reach at the top of the long and narrow gas flow of cooler.But it is wanted with these intensity differences, having many bends or curves simple tool
Smash the solid pollutant of close structure, quality to pieces, the long and narrow gas flow of the clean cooler of thorough cleaning is highly difficult, therefore machine
The speed of repairing cleaning cooler is slow, efficiency is very low.Again because removing the cooler lower part terrain clearance of cooler liquid collecting bucket 213
Small, machine repair personnel directly can not visually observe in cleaning, can only be with flashlight from the cooler for removing cooler liquid collecting bucket 213
Irradiated, at the mixed gas entrance 212 being opened from cooler from hand electric lights when, when by gas flow
Light leakage situation come judge cooler cleaning degree, therefore, cooler is cleaned out degree and can not directly be grasped.So in machine maintenance
After clearing up cooler, the long and narrow gas flow of cooler is nor clean, and only gas flow is unimpeded.Such cooler exists
When cleaning, appear its design defect, lacks effective cleaning, observation working space.The speed of clearing up cooler is slow, efficiency
It is low, it pays off unclean.PET production lines have two auxiliary extruders, every auxiliary extruder to have a set of pumped vacuum systems, and often set is taken out true
Empty set system has two sets of cooling systems again, and there are four coolers for a production line.When cooler is cleared up in daily machine maintenance, four coolings
Device can all have different degrees of blocking, and therefore, four coolers need to be cleared up simultaneously.It is time-consuming, laborious when clearing up cooler, one
Machine repair personnel clears up a cooler and needs 2-3 hours, is sought after four machine repair personnels, four coolers are cleared up simultaneously
2-3 hours, completion could be cleared up.The cooler of cleaning vacuum system must stop raw line, and only there are four machines for PET production lines day shift
Personnel are repaiied, the machine maintenance human resources of occupancy are more and clearance time is long, increase downtime, influence production efficiency.
With reference to the cooler construction of Fig. 3 and the present invention shown in Fig. 4, including cooler body 303, pass through flange and bolt
311 are connected to the flange end cap 302 of 303 upper end of cooler body, and hanging ring 301 is housed in flange end cap 302, passes through flange 308
It is connected to the liquid collecting bucket 313 of 303 lower end of cooler body, 313 lower end of liquid collecting bucket is sealed by flange 309, and drain pipe is arranged
310。
The cooler body 303 is the double cylinder being made of internal layer 319 and outer layer 316, in cooler body 303
For cavity；Gap between the internal layer 319 and outer layer 316 constitutes cooling water jecket 304, and in the outer of cooler body 303
It is respectively equipped with the first cooling water inlet 321 and the first cooling water outlet 322 being connected to cooling water jecket 304 on layer 316, it is cooling
Water leg 304 is instead of original electrical heat tracing layer 216, comprehensive cooling promotion cooling effect.
The mixed gas that connection 303 internal cavity of cooler body is additionally provided on the outer layer 316 of the cooler body 303 enters
Mouth 312 and mixed gas outlet 307.The center of the cooler body 303 is equipped with coldplate 305, is set in the coldplate 305
There are cooling water flow conduits 306.
The upper end of 303 internal cavity of the cooler body is set there are two nozzle 333,334, and nozzle 333,334 is separately connected
Sparge pipe 331,332 is set along the straight line instillation hole slot 323,325 of 305 edge of coldplate setting, and along the edge of 319 wall of internal layer
The circular arc instillation hole slot 324,326 set（Specifically it can refer to shown in Fig. 5）, the lower end difference of instillation hole slot 323,324,325,326
It is connected with instillation guider 327,328,329,330；Instillation guider is for making cleaning solution uniformly flow through cooling work face.
With reference to shown in Fig. 4, the drop being connected to instillation hole slot 323,324,325,326 is correspondingly provided in flange end cap 302
Liquid injection port 317（In the present embodiment by taking two drip solution mouths as an example, practice can increase and decrease as needed）And cooling water flow conduits 306 connect
Logical the second cooling water inlet 314 and the second cooling water outlet 315 and the mouth spray 318 being connected to sparge pipe 331,332
（In the present embodiment by taking two mouth sprays as an example, practice can increase and decrease as needed）.
With reference to the negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line of the present invention shown in fig. 6
System, including cooler 401, filter 402, the first liquid level box 403, pump 404 and the second liquid level box 405.
The cooler drain pipe 310 is connect by the first solenoid valve 411 with filter 402, and the filter 402 passes through
Second solenoid valve 412 is connect with the first liquid level box 403, and first liquid level box 403 is by being pumped into solenoid valve 420 and pump 404
Import connects, and the outlet of the pump 404 is divided into two-way, is connect all the way with the second liquid level box 405 by pumping out solenoid valve 413, separately
Two hydrojets that hydrojet solenoid valve 441 and hydrojet flow control valve 442,443 are covered with flange end 302 respectively are passed sequentially through all the way
Mouth 318 connects；Second liquid level box 405 is connected to by being connected to solenoid valve 416 with the inner cavity of cooler 401；Second liquid level box
405 outlet is divided into two-way, is connect all the way with filter 402 by overflow solenoid valve 415, another way passes through instillation solenoid valve
417 and instillation flow control valve 421,422 connect respectively with two drip solution mouths 317 in flange end cap 302.
The filter 402 is equipped with release ball valve 431 and Blowoff ball valve 432, and first liquid level box 403, which is equipped with, to be mended
Liquid electromagnetic valve 419 and liquid level gauge 407；Second liquid level box 405 is equipped with and unloads pressure electromagnetic valve 414 and liquid level gauge 406.Cooler
Cooling water inlet 314 in 401 flange end cap 302 connects cooling water inlet pipe by ball valve 418.
The course of work of the present invention is as follows：
1, negative pressure wet type self-cleaning：Pass through the instillation of the upper end of 401 inside center coldplate 305 of cooler in routine work
Hole slot 323,324,325,326, and instillation guider 329,330,331,332, to 319 wall of coldplate 305 and periphery internal layer（It is cold
But 304 inner wall of water leg）Upper instillation liquid keeps coldplate 305,319 wall of internal layer to moisten, instillation liquid selective triethylene glycol, and three
Glycol gasification point will not influence the auxiliary extruder vacuum system negative pressure of PET film production line up to 285 DEG C because vaporizing volume expands
Power operating mode standard when using negative pressure wet type self-cleaning method, is solidified when vaporized molecules are contacted in cooler center coldplate 305
When, due to the dust contact that the coldplate 305 and vaporized molecules of moistening solidify, sposh shape is become, due to gravity
Fall into cooler liquid collecting bucket 313.
2, Negative Pressure Batch hydrojet is cleared up：When PET film production line stop, auxiliary extruder vacuum system need not reach negative
When pressure working condition standard, hydrojet cleaning is carried out, triethylene glycol equally can be used in hydrojet, and hydrojet is sprayed from nozzle 333,334, is rinsed cold
But 401 inside internal layer of device, 319 wall, the dirt on coldplate 305, dust, and pour cooler liquid collecting bucket 313.
In order to coordinate the manner of cleaning up of above-mentioned cooler that can be smoothed out, whole negative pressure cleaning system is needed to realize.
Negative pressure wet type self-cleaning：When PET film production line normally produces and uses, when the liquid collecting bucket 313 for falling into cooler
The first solenoid valve 411 for being connected by drain pipe 310 of dust, dirt and instillation liquid enter filter 402 and filter, go to decontaminate
Object, dirt are discharged by Blowoff ball valve 432, and filtered instillation liquid enters the first liquid level box 403 by second solenoid valve 412,
It is pumped into the second liquid level box 405 through pump 404.
In order to keep vacuum system negative pressure operating mode standard, when being pumped into, ensure that vacuum system is born by respective valve is closed
Pressure working condition standard closes the connection solenoid valve of instillation solenoid valve 417, the first liquid level box 404 and cooler 401 when being pumped into
416, the first solenoid valve 411, hydrojet solenoid valve 441, the hydrojet flow control valve 442,443 of cooler 401 and filter 402.
It opens simultaneously and is pumped into solenoid valve 420, pumps out solenoid valve 413, unload pressure electromagnetic valve 414, the second liquid level box 405 and the company of filter 402
Logical overflow solenoid valve 415.
Until the second liquid level box 405 is full by pump, the process of being pumped into terminates；When continuous drip, closing is pumped into solenoid valve 420, pump
Go out solenoid valve 413, unload pressure electromagnetic valve 414, the overflow solenoid valve 415 that liquid level box 405 is connected to filter 402, hydrojet solenoid valve
441, hydrojet flow control valve 442,443；Open the first solenoid valve 411 and the second liquid level of cooler 401 and filter 402
The connection solenoid valve 416 of case 405 and cooler 401 so that the second liquid level box 405 and cooler 401 keep identical negative pressure, and second
Instillation liquid in liquid level box 405 is existed by gravity by instillation solenoid valve 417, instillation flow control valve 421,422 continuous drips
On 319 wall of coldplate 305 and internal layer.
In order to keep vacuum system negative pressure operating mode standard, when being pumped into the conversion with instillation, in order to reduce to vacuum
System negative pressure influences, wherein unloading pressure electromagnetic valve 414, overflow solenoid valve 415, connection solenoid valve 416 is installed on the second liquid level box
405 proximal most positions reduce the length of pipeline, and gas enters vacuum system when avoiding being pumped into the conversion with instillation.
When drip solution deficiency, drip solution is supplemented to the first liquid level box 403 by fluid supplement solenoid valve 419.
For the purposes of keeping vacuum system negative pressure operating mode standard, dirt is filtered by 432 row of Blowoff ball valve by filter 402
When going out, it should select to carry out when PET film production line stop, 431 release of release ball valve can be opened when needing.
Negative Pressure Batch hydrojet is cleared up：It is cleaned when PET film production line normally produces shutdown, when cleaning, closes and enter the
Two liquid level box 405 pump out solenoid valve 413, open hydrojet solenoid valve 441, hydrojet flow control valve 442,443, and hydro-peening liquid is from the
One liquid level box 403 enters pump 404 through being pumped into solenoid valve 420, then through hydrojet solenoid valve 441, hydrojet flow control valve 422,423 into
Enter the nozzle 333 of cooler 401, inside 334 cleaning showers coolers 401.When dust, the dirt for falling into cooler liquid collecting bucket 313
Dirt, cleaning solution are filtered by the first solenoid valve 411 into filter 402, and filtering removal dirt, dirt is discharged through Blowoff ball valve 432,
Filtered cleaning solution enters the first liquid level box 403 through second solenoid valve 412.When hydro-peening liquid deficiency, again by fluid infusion electromagnetism
Valve 419 supplements drip solution.
The above, preferable specific implementation mode only of the invention, but the scope of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope of present disclosure, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore the scope of the present invention is subject to the scope of protection of the claims.
Claims (5)
1. the negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line, which is characterized in that including cooling
Device, filter, the first liquid level box, pump and the second liquid level box；The cooler includes cooler body, is existed by flanged joint
The flange end cap of cooler body upper end, and the liquid collecting bucket by flanged joint in cooler body lower end；The cooler
Main body is the double cylinder being made of internal layer and outer layer, and cavity is equipped in cooler body；Between the internal layer and outer layer
Gap constitutes cooling water jecket, and in being respectively equipped with the first cooling water being connected to cooling water jecket on the outer layer of cooler body
Import and the first cooling water outlet are additionally provided with the gaseous mixture of connection cooler body internal cavity on the outer layer of the cooler body
The center of body entrance and mixed gas outlet, the cooler body is equipped with coldplate, and cooling flow is equipped in the coldplate
Road；The upper end of the cooler body internal cavity is equipped at least two nozzles and along the setting of the edge of coldplate and inner layer wall
Instillation hole slot, instillation hole slot lower end are connected with instillation guider；It is correspondingly provided in the flange end cap and connects with instillation hole slot
It logical drip solution mouth, the second cooling water inlet being connected to cooling water flow conduits and the second cooling water outlet and is connected to nozzle
Mouth spray；The liquid collecting bucket lower end is equipped with drain pipe；
The drain pipe is connect by the first solenoid valve with filter, and the filter passes through second solenoid valve and the first liquid level box
Connection, first liquid level box are connected by being pumped into the import of solenoid valve and pump, and the outlet of the pump is divided into two-way, passes through all the way
It pumps out solenoid valve to connect with the second liquid level box, another way passes sequentially through hydrojet solenoid valve and hydrojet flow control valve and flange end cap
On mouth spray connection；Second liquid level box is connected to by being connected to solenoid valve with the inner cavity of cooler body；Second liquid level box
Outlet be divided into two-way, connect all the way with filter by overflow solenoid valve, another way passes through instillation solenoid valve and instillation flow
Regulating valve is connect with the drip solution mouth in flange end cap.
2. the negative pressure cleaning system according to claim 1 for the auxiliary extruder vacuum system cooler of film line,
It is characterized in that, the flange end cap top is equipped with hanging ring.
3. the negative pressure cleaning system according to claim 1 for the auxiliary extruder vacuum system cooler of film line,
It is characterized in that, the filter is equipped with release ball valve and Blowoff ball valve.
4. the negative pressure cleaning system according to claim 1 for the auxiliary extruder vacuum system cooler of film line,
It is characterized in that, first liquid level box is equipped with fluid supplement solenoid valve.
5. the negative pressure cleaning system according to claim 1 for the auxiliary extruder vacuum system cooler of film line,
It is characterized in that, second liquid level box, which is equipped with, unloads pressure electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656600.2A CN106217805B (en) | 2016-08-11 | 2016-08-11 | Negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656600.2A CN106217805B (en) | 2016-08-11 | 2016-08-11 | Negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line |
Publications (2)
| Publication Number | Publication Date |
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| CN106217805A CN106217805A (en) | 2016-12-14 |
| CN106217805B true CN106217805B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610656600.2A Active CN106217805B (en) | 2016-08-11 | 2016-08-11 | Negative pressure cleaning system for the auxiliary extruder vacuum system cooler of film line |
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| CN (1) | CN106217805B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204798889U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Collector of cooler for vacuum system |
| CN204800997U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Cooler for vacuum system with negative pressure self sealss end cover |
| CN204801017U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Cooler for vacuum system with water jacket cooling |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090726B2 (en) * | 2001-10-30 | 2006-08-15 | Graco Minnesota Inc. | Direct feed extruder supply system |
| DE102013000316A1 (en) * | 2013-01-10 | 2014-07-10 | Brückner Maschinenbau GmbH & Co. KG | Device for degassing polymer melts |
-
2016
- 2016-08-11 CN CN201610656600.2A patent/CN106217805B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204798889U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Collector of cooler for vacuum system |
| CN204800997U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Cooler for vacuum system with negative pressure self sealss end cover |
| CN204801017U (en) * | 2015-06-17 | 2015-11-25 | 安徽国风塑业股份有限公司 | Cooler for vacuum system with water jacket cooling |
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| CN106217805A (en) | 2016-12-14 |
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Address after: 230088 No.1000, Mingchuan Road, high tech Zone, Hefei City, Anhui Province Patentee after: Anhui Guofeng New Material Co.,Ltd. Address before: Tianzhi Road, national high tech Industrial Development Zone, Hefei City, Anhui Province, No. 36 230088 Patentee before: ANHUI GUOFENG PLASTIC CO.,LTD. |
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