CN206367178U - For the auxiliary extruder vacuum system cooler of film line - Google Patents

Abstract

The utility model is related to a kind of for the auxiliary extruder vacuum system cooler of film line, including cooler body, the center of the cooler body is provided with coldplate, the both sides of the coldplate are fixed on the internal layer of cooler body, the upper end of coldplate is separated with flange end cap is divided into upper and lower pair of coolant flow channel by cavity, cooling water flow conduits are provided with the coldplate, the outer layer of the cooler body is provided with the second cooling water inlet and the second coolant outlet that are connected with cooling water flow conduits；The side of cooler liquid collecting bucket offers collection hole, collects hole periphery and is fixed with the blind plate for being provided with and matching by bolt on sealing plate, sealing plate, and O-ring seal is provided between blind plate and sealing plate, and the lower end of liquid collecting head is provided with discharging tube.The utility model is compared with the auxiliary extruder vacuum system cooler of conventional films production line, and with higher cooling effectiveness, while repair and maintenance more facilitates, cleaning work is more time saving and energy saving, reduces manpower and time cost.

Description

For the auxiliary extruder vacuum system cooler of film line

Technical field

The utility model is related to film line, particularly a kind of to be used for the auxiliary extruder vacuum system cooling of film line Device.

Background technology

At present, the known auxiliary extruder vacuum system of PET film production line is by vacuum (-tight) housing, cooler, filter, Roots Blower fan, oil water separator, screw pump, connecting tube and solenoid valve block into.It is right in the operating temperature of auxiliary 270 DEG C of extruder system Evaporated in the melt and dissolved material of phthalic acid ethylene glycol fat, using small molecule and vapor as the mixed gas of main component, by vacuum The vacuum (-tight) housing of system is actively incubated connecting tube to 250 DEG C through electrical heating, is cooled down into cooler, the mixed air after cooling The body active through electrical heating to 180 DEG C is incubated again connecting tube and magnetic valve enter filter, and filter flow channel cross-section product is prominent So increase, 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 component is the gaseous mixture of vapor Body is connected by connecting tube and magnetic valve with roots blower, and vacuumizing power by roots blower offer one-level is aspirated, gas warp Water-cooling type oil separator oil-water separation, then through screw pump provide two grades vacuumize power isolated at suction profit after discharge.Vacuum The pressure of system is absolute pressure 5mbar, and about 0.005 atmospheric pressure, i.e., the vacuum of -0.995 atmospheric pressure is come 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 cooled down with inside center coldplate, and is shunted Gas, changes the flow direction of gas, and circular outer wall is the active insulation that electricity consumption is heated to 180 DEG C.Top is flange connection Round end cap is sealed, and has the connection of cooling water inlet/outlet pipe on end cap, and is connected with the inside center coldplate of cooler, inseparable From.Bottom is the liquid collecting bucket that flange couples, and discharging tube and connection valve are arranged at liquid collecting bucket bottom, and the gas flow section of cooler is narrow It is narrow, it is suitable with the gas flow section for passing in and out cooler connecting tube, very fast gas flow rate is formed with this.Mixed gas is entering cold But device cool down when, water vapor condensation Cheng Shui 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 insulation through electrical heating to 220 DEG C and magnetic 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 evaporated, this cause 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 in the cooler by 180 DEG C, rapid condensation is into solid.Because gas flow rate is fast, circular outer wall is electricity Heating is actively incubated, small with the mixed gas temperature difference, therefore, and molecule is to be frozen into solid in the contact of center coldplate, from level to level Condensation attachment cooler inwall, 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 lost work Make function, until blocking cooler gas runner.Prevent vacuum system from working, influence production run.

Reliable guarantee is provided for the production of production line downstream process, often to stop production line and clear up what is blocked by contamination by machine maintenance Inside cooler, because the inside center coldplate of top end cover and cooler is connected, structure bulky is not easy to remove.Use Cucurbit suspender is pulled out, but has close structure, 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 typically in cleaning, can only pull down bulky cooler collection Liquid bucket, is cleared up from bottom.The cooler bottom terrain clearance for pulling down cooler liquid collecting bucket is small, is shorter than the long and narrow gas of cooler Runner, therefore when being cleared up with simple tools such as round steel, it is impossible to it is 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, the simple tool increase cleaning length that can be bent by force with hand enables cleaning 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 Thing 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 bottom terrain clearance for pulling down 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 pulling down cooler liquid collecting bucket depending on observation, the porch being opened from cooler Observe torch light irradiation when, by gas flow when light leak situation come judge cooler cleaning degree, therefore, cooler The degree of cleaning out can not be grasped directly.So after machine maintenance cleaning cooler, the long and narrow gas flow of cooler is nor clean , simply 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 insulation and the refrigerating function of cooler are collided 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 a production line has four 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, which clears up a cooler, needs 2-3 hours, even if Four machine repair personnels, four coolers are cleared up and are also sought after 2-3 hours simultaneously, could clear up completion.Clear up the cold of vacuum system But device must stop to give birth to line, and PET production line day shifts only have four machine repair personnels, and the machine maintenance human resources of occupancy are more and clearance time It is long, increase downtime, have impact on production efficiency.

Utility model content

In view of the above-mentioned problems, the technical problems to be solved in the utility model, which is to provide, is used for the auxiliary extruder of film line Vacuum system cooler, improves existing cooler construction, clear using comprehensive cooling, negative pressure wet type self-cleaning and interval hydrojet The mode of self-cleaning is washed, while changing gas cooling flow passage structure and in setting up collection port on liquid collecting bucket, cooling effect, side is lifted Just the dirt of cleaning accumulation is collected, production efficiency is improved.

Adopted the following technical scheme that for this utility model：

A kind of cooler for the auxiliary extruder vacuum system of film line, including cooler body, are connected by flange The flange end cap of cooler body upper end is connected on, and is connected to by flange the liquid collecting bucket of cooler body lower end；It is described cold But device main body is that cavity is provided with the double cylinder being made up of internal layer and outer layer, cooler body；The internal layer and outer layer it Between gap constitute cooling water jecket, and in being respectively equipped with connected with cooling water jecket first cold on the outer layer of cooler body But the mixed of connection cooler body internal cavity is additionally provided with water inlet and the first coolant outlet, the outer layer of the cooler body Gas access and mixed gas outlet are closed, the center of the cooler body is provided with coldplate, and the both sides of the coldplate are fixed On the internal layer of cooler body, the upper end of coldplate is separated with flange end cap is divided into upper and lower pair of coolant flow channel, institute by cavity State and cooling water flow conduits are provided with coldplate, the outer layer of the cooler body is provided with the second cooling connected with cooling water flow conduits Water inlet and the second coolant outlet；The upper end of the cooler body internal cavity is provided with least two shower nozzles and along coldplate The instillation hole slot set with the edge of inner layer wall, the instillation hole slot lower end is connected with instillation guider；In the flange end cap It is correspondingly provided with the drip solution mouthful connected with instillation hole slot and the mouth spray connected with shower nozzle；The side of the liquid collecting bucket is offered Hole is collected, collection hole periphery is fixed with sealing plate, the sealing plate and the blind plate matched is provided with by bolt, described O-ring seal is provided between blind plate and sealing plate, the lower end of the liquid collecting head is provided with discharging tube.

Further, the flange end cap top is provided with suspension ring.

Further, the instillation hole slot lower end that the edge along coldplate is set is connected with drip tube, the drip tube The mouth of pipe extends to the upper end of coldplate and instillation guider is installed at the mouth of pipe.

The beneficial effects of the utility model are：Cooler is improved to the knot of bilayer zone cooling water jecket by the utility model Structure, cooling work area is added using comprehensive cooling work face, improves cooling performance, is removed outside cooler circular body Active electrical heat tracing, saves the energy；Increase the instillation hole slot and instillation guider for negative pressure wet type self-cleaning, and for Hydrojet of having a rest cleans the shower nozzle of self-cleaning, coordinates filter, pump and the liquid level box of negative pressure cleaning system, can comprehensive holding cooler It is internal clean, so as to keep cooling performance relative constancy.

Simultaneously using coldplate and flange end cap separate design, upper and lower pair of coolant flow channel is formed, effective bosher is added Make area, slow down air velocity, increase air-flow cool time, coordinate comprehensive cooling work face to add cooling work area, Improve cooling performance；Hole is collected in being set up on liquid collecting bucket, by sealing plate and blind plate to collecting hole sealing and opening, blind plate position Put externally, it is ensured that dismounting, installation blind plate have suitable operating space.Cooler is cleared up, dirt falls into dirt collecting bucket, collects dirt When, without dismantling again, installation volume is big, bulky dirt collecting bucket, can dismantle small volume, lightweight collection hole blind plate, pull down The bolt lock of hole blind plate is collected, blind plate is unloaded, opens and collect hole, be directly collected, after the completion of collection, blind plate is installed, tightly Fixing bolt is latched.

The utility model is compared with the auxiliary extruder vacuum system cooler of conventional films production line, with higher cooling effectiveness, Repair and maintenance more facilitates simultaneously, and cleaning work is more time saving and energy saving, reduces manpower and time cost.

Brief description of the drawings

Embodiment of the present utility model 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 utility model；

Fig. 2 is the main sectional view of existing cooler；

Fig. 3 is main sectional view of the present utility model；

Fig. 4 is top view of the present utility model；

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 flow chart of negative pressure cleaning system where the utility model.

Embodiment

The fundamental diagram of the auxiliary extruder vacuum system of existing PET film shown in reference picture 1, the course of work is as follows： In 270 DEG C of operating temperature, evaporated in the melt and dissolved material of terephthalate fat, using small molecule and vapor as it is main into Point mixed gas be actively incubated 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, the connection that the active through electrical heating to 120 DEG C is incubated again of the mixing gas after cooling Pipe and magnetic valve 121 and magnetic valve 120 respectively enter filter 1, filter 2 106, and filter flow channel cross-section product is prominent So increase, 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 component is the gaseous mixture of vapor Body is connected by connecting tube and magnetic valve 123, magnetic valve 124, magnetic valve 125 with roots blower 107, and one is provided by roots blower Level vacuumizes power and aspirated, the water cooled oil-water separation of formula oil water separator 108 of gas, then provides two grades through screw pump 109 Power suction is vacuumized, then by the oil-water separation of oil water separator 110, is discharged through muffler 111, exhaust blow-down pipe 112.Vacuum system The pressure of system is absolute pressure 5mbar, and about 0.005 atmospheric pressure, i.e., the vacuum 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 evaporated, this cause mixed gas composition be not only small molecule and Vapor, also a small amount of macromolecular.

Existing cooler construction shown in reference picture 2, including cooler body 204, the upper flanges of cooler body 204 204 and flange end cap 202 connected by bolt 211, have suspension ring 201 in flange end cap 202, the outside of cooler body 204 is arranged There is electrical heat tracing layer 216, and be provided with the middle of mixed gas entrance 212, mixed gas outlet 207, the inner chamber of cooler body 204 It is coolant flow channel 206 to set in coldplate 205, coldplate 205, and coolant flow channel 206 is circulated with the coolant in flange end cap 202 Import, outlet；The lower end of cooler body 204 by flange 208 connect liquid collecting bucket 213, the lower end of liquid collecting bucket 213 again by Flange 209 is sealed, and sets discharging tube 210.

In the course of work, when entering cooler by the mixed gas containing gasification macromolecular, gaseous macromolecular solidification Zero point is high, and in the cooler by 160 DEG C, rapid condensation is into solid.Because gas flow rate is fast, and due to flange connection The cooler body 204 connect is that have electrical heat tracing layer 216 to be actively incubated, and small with the mixed gas temperature difference, therefore, molecule is cold The contact of Que Qi centers coldplate 205 is frozen into solid, condensation attachment cooler inwall 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, influence production run.

Reliable guarantee is provided for the production of production line downstream process, often to stop production line and clear up what is blocked by contamination by machine maintenance Inside cooler, because the inside center coldplate 205 of top flange end cap 202 and cooler is connected, structure bulky is not readily removable Unload.Had using hoist and pulled out, but have close structure, big adhesive force pollutant contact solidification attachment can also be difficult to pull out. Therefore it is time-consuming, laborious from the dismounting cleaning cooler of cooler top flange end cap 202.So, machine maintenance, can only typically in cleaning Bulky cooler liquid collecting bucket 213 is pulled down, is cleared up from bottom.The cooler bottom for pulling down cooler liquid collecting bucket 213 is liftoff It is highly small, it is shorter than the long and narrow gas flow of cooler, therefore when being cleared up with simple tools such as round steel, it is impossible to it is cleaned to cooler At the top of long and narrow gas flow.Machine repair personnel can only use thin round steel or thin band iron, and the simple tool increase that can be bent by force with hand is clear Length is managed, cleaning is reached at the top of the long and narrow gas flow of cooler.But will 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 pulling down the cooler bottom 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 pulling down cooler liquid collecting bucket 213 From at irradiated, the mixed gas entrance 212 being opened from cooler during torch light irradiation, when by gas flow Light leak situation come judge cooler cleaning degree, therefore, cooler is cleaned out degree and can not directly grasped.So in machine maintenance Clear up after cooler, the long and narrow gas flow of cooler is nor clean, and simply gas flow is unimpeded.Such cooler exists During cleaning, appear its design defect, lack effective cleaning, observation working space.The speed of clearing up cooler is slow, efficiency It is low, pay off unclean.PET production lines have two auxiliary extruders, and every auxiliary extruder has a set of pumped vacuum systems, and often set is taken out true Empty set system has two sets of cooling systems again, and a production line has four coolers.When cooler is cleared up in daily machine maintenance, four coolings Device can all have different degrees of blocking, therefore, and four coolers need to be cleared up simultaneously.It is time-consuming, laborious when clearing up cooler, one Machine repair personnel, which clears up a cooler, needs 2-3 hours, clears up and is also sought after simultaneously even if four machine repair personnels, four coolers 2-3 hours, completion could be cleared up.The cooler of cleaning vacuum system must stop to give birth to line, and PET production line day shifts only have four machines Personnel are repaiied, the machine maintenance human resources of occupancy are more and clearance time is long, increase downtime, influence production efficiency.

Reference picture 3 and the cooler construction of the present utility model shown in Fig. 4, including including cooler body 303, pass through method Blue and bolt 311, which is connected in the flange end cap 302 of the upper end of cooler body 303, flange end cap 302, is equipped with suspension ring 301, passes through Flange 308 is connected to the liquid collecting bucket 313 of the lower end of cooler body 303, and the lower end of liquid collecting bucket 313 is sealed by flange 309, and is set Discharging tube 310.

The cooler body 303 is in the double cylinder being made up of internal layer 319 and outer layer 316, 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 The first cooling water inlet 321 and the first coolant outlet 322 connected with cooling water jecket 304 is respectively equipped with layer 316, is cooled down Water leg 304 instead of original electrical heat tracing layer 216, and comprehensive cooling lifts cooling effect.

The mixed gas that the connection internal cavity of cooler body 303 is additionally provided with 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 provided with coldplate 305, the two of the coldplate 305 Side is fixed on the internal layer 319 of cooler body 303, and the upper end of coldplate 305 is separated with flange end cap 302 is divided into cavity Upper and lower pair of coolant flow channel, mixed gas can be passed through by two coolant flow channels of the upper and lower of coldplate 305, be added effectively cold But work area, slows down air velocity, increases air-flow cool time, preferably improves cooling effect；In the coldplate 305 Provided with cooling water flow conduits 306, the outer layer 316 of the cooler body 303 is cold provided with second connected with cooling water flow conduits 306 But the coolant outlet 315 of water inlet 314 and second.

The upper end of the internal cavity of cooler body 303 is connected respectively provided with two shower nozzles 333,334, shower nozzle 333,334 Sparge pipe 331,332, the straight line instillation hole slot 323,325 set along the edge of coldplate 305, and set along the edge of the wall of internal layer 319 The circular arc instillation hole slot 324,326 put（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 used to make cleaning fluid uniformly flow through cooling work face；Its In in order to ensure the degree of accuracy instiled, instillation guider 328,329 extends to the upper end of coldplate 305 by conduit.

Shown in reference picture 4, two connected with instillation hole slot 323,324,325,326 are correspondingly provided with flange end cap 302 Individual drip solution mouthful 317（In the present embodiment by taking two drip solutions mouthful as an example, practice can increase and decrease as needed）, with sparge pipe 331, Two mouth sprays 318 of 332 connections（In the present embodiment by taking two mouth sprays as an example, practice can increase and decrease as needed）.

The side of the liquid collecting bucket 313 offers collection hole 351, and the periphery of collection hole 351 is fixed with sealing plate 353, The blind plate 352 matched is installed on the sealing plate 353 by bolt, O is provided between the blind plate 352 and sealing plate 353 Type sealing ring.Because the bottom liquid collecting bucket of cooler body can produce dirt after a long time use and be deposited on liquid collecting bucket bottom, And the pipeline that the instillation liquid and dust of liquid collecting bucket enter filter may be blocked, the new new blind plate position of this practicality is external, Ensure to dismantle, blind plate is installed has suitable operating space.Cooler is cleared up, dirt falls into dirt collecting bucket, when collecting dirt, without again Dismantle, installation volume is big, bulky dirt collecting bucket, can dismantle small volume, lightweight collection hole blind plate, pull down collection hole blind plate Bolt lock, unload blind plate, open and collect hole, be directly collected, after the completion of collection, blind plate, fastening bolt lock are installed , save substantial amounts of time and human cost.

The negative pressure cleaning system of the auxiliary extruder vacuum system cooler of film line of the present utility model shown in reference picture 6 System, including cooler 401, filter 402, the first liquid level box 403, the liquid level box 405 of pump 404 and second.

The cooler discharging tube 310 is connected by the first magnetic valve 411 with filter 402, and the filter 402 passes through Second magnetic valve 412 is connected with the first liquid level box 403, and first liquid level box 403 is by being pumped into magnetic valve 420 and pump 404 Import is connected, and the outlet of the pump 404 is divided into two-way, is connected all the way by pumping out magnetic valve 413 with the second liquid level box 405, separately Two hydrojets that hydrojet magnetic 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 is connected；Second liquid level box 405 is connected by connecting magnetic valve 416 with the inner chamber of cooler 401；Second liquid level box 405 outlet is divided into two-way, is connected all the way by overflow magnetic valve 415 with filter 402, and another road passes through instillation magnetic valve 417 and instillation flow control valve 421,422 be connected respectively with two drip solutions mouthfuls 317 in flange end cap 302.

The filter 402 is provided with release ball valve 431 and Blowoff ball valve 432, and first liquid level box 403 is provided with quilt Liquid electromagnetic valve 419 and liquid level gauge 407；Second liquid level box 405 is provided with and unloads pressure electromagnetic valve 414 and liquid level gauge 406.Cooler The second cooling water inlet 314 in 401 cooler body 303 connects cooling water inlet pipe by ball valve 418.

Utility model works process is as follows：

1st, negative pressure wet type self-cleaning：Pass through the instillation of the upper end of the inside center coldplate 305 of cooler 401 in routine work Hole slot 323,324,325,326, and instillation guider 329,330,331,332, to coldplate 305 and the wall of periphery internal layer 319（It is cold But the inwall of water leg 304）Upper instillation liquid, keeps coldplate 305, the wall of internal layer 319 moistening, instillation liquid selective triethylene glycol, 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, during using negative pressure wet type self-cleaning method, solidifies 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, it is due to Action of Gravity Field Fall into cooler liquid collecting bucket 313.

2nd, Negative Pressure Batch hydrojet is cleared up：When PET film production line stop, auxiliary extruder vacuum system need not reach negative During pressure working condition standard, hydrojet cleaning is carried out, hydrojet can equally use triethylene glycol, and hydrojet sprays from shower nozzle 333,334, rinses cold But the wall of 401 inside internal layer of device 319, the dirt on coldplate 305, dust, and pour cooler liquid collecting bucket 313.

In order to which the manner of cleaning up for coordinating above-mentioned cooler can be smoothed out, it is necessary to which overall negative pressure cleaning system is realized.

Negative pressure wet type self-cleaning：In the normal production and application of PET film production line, when the liquid collecting bucket 313 for falling into cooler The first magnetic valve 411 for being connected by discharging tube 310 of dust, dirt and instillation liquid filtered into filter 402, go decontamination Thing, dirt is discharged by Blowoff ball valve 432, and the instillation liquid after filtering enters the first liquid level box 403 by the second magnetic valve 412, The second liquid level box 405 is pumped into 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, that is, close instillation magnetic valve 417, the connection magnetic valve of the first liquid level box 404 and cooler 401 when being pumped into 416th, the first magnetic valve 411, hydrojet magnetic valve 441, the hydrojet flow control valve 442,443 of cooler 401 and filter 402. Open simultaneously and be pumped into magnetic valve 420, pump out magnetic valve 413, unload pressure electromagnetic valve 414, the second liquid level box 405 and connect with filter 402 Logical overflow magnetic valve 415.

Until the second liquid level box 405 is expired by pump, the process of being pumped into terminates；During continuous drip, closing is pumped into magnetic valve 420, pump Go out magnetic valve 413, unload overflow magnetic valve 415, hydrojet magnetic valve that pressure electromagnetic valve 414, liquid level box 405 are connected with filter 402 441st, hydrojet flow control valve 442,443；Open the first magnetic valve 411 of cooler 401 and filter 402, and the second liquid level The connection magnetic valve 416 of case 405 and cooler 401 so that the second liquid level box 405 keeps identical negative pressure, second with cooler 401 Instillation liquid in liquid level box 405 is existed by gravity by instillation magnetic valve 417, instillation flow control valve 421,422 continuous drips On coldplate 305 and the wall of internal layer 319.

In order to keep vacuum system negative pressure operating mode standard, when being pumped into the conversion with instiling, in order to reduce to vacuum System negative pressure influences, wherein unloading pressure electromagnetic valve 414, overflow magnetic valve 415, connection magnetic valve 416 is installed on the second liquid level box 405 proximal most positions, reduce the length of pipeline, it is to avoid gas enters vacuum system when being pumped into the conversion with instiling.

When drip solution is not enough, by supplementing drip solution to the first liquid level box 403 by liquid electromagnetic valve 419.

For the purposes of keeping vacuum system negative pressure operating mode standard, dirt is filtered by the row of Blowoff ball valve 432 by filter 402 When going out, should select during PET film production line stop carry out, it is necessary to when can open the release of release ball valve 431.

Negative Pressure Batch hydrojet is cleared up：Cleaned when PET film production line normally produces shutdown, during cleaning, closing enters the Two liquid level box 405 pump out magnetic valve 413, open hydrojet magnetic 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 magnetic valve 420, then through hydrojet magnetic valve 441, hydrojet flow control valve 422,423 enters Enter the shower nozzle 333 of cooler 401, inside 334 cleaning showers coolers 401.When the dust, the dirt that fall into cooler liquid collecting bucket 313 Dirt, cleaning fluid are filtered by the first magnetic valve 411 into filter 402, and filtering removes dirt, and dirt is discharged through Blowoff ball valve 432, Cleaning fluid after filtering enters the first liquid level box 403 through the second magnetic valve 412.When hydro-peening liquid is not enough, again by by liquid electromagnetic Valve 419 supplements drip solution.

What is remained in liquid collecting bucket 313 fails the dirt of discharge, can be by collecting the directly recovery of hole 351.

It is described above, the only preferable embodiment of the utility model, but the utility model protection domain do not limit to In this, any one skilled in the art is in the technical scope that the utility model is disclosed, the change that can be readily occurred in Change or replace, should all cover within protection domain of the present utility model.Therefore the utility model protection domain is with claim The protection domain of book is defined.

Claims (3)

1. for the auxiliary extruder vacuum system cooler of film line, including cooler body, cooling is connected to by flange The flange end cap of device main body upper end, and it is connected to by flange the liquid collecting bucket of cooler body lower end；The cooler body For the double cylinder being made up of internal layer and outer layer, cooler body is interior to be provided with cavity；Gap between the internal layer and outer layer Constitute cooling water jecket, and in being respectively equipped with the first cooling water inlet for being connected with cooling water jecket on the outer layer of cooler body With the first coolant outlet, the mixed gas that connection cooler body internal cavity is additionally provided with the outer layer of the cooler body enters Mouth and mixed gas outlet, it is characterised in that the center of the cooler body is provided with coldplate, the both sides of the coldplate are consolidated It is scheduled on the internal layer of cooler body, the upper end of coldplate is separated with flange end cap is divided into upper and lower pair of coolant flow channel by cavity, Cooling water flow conduits are provided with the coldplate, the outer layer of the cooler body is cold provided with second connected with cooling water flow conduits But water inlet and the second coolant outlet；The upper end of the cooler body internal cavity is provided with least two shower nozzles and along cooling The instillation hole slot that the edge of plate and inner layer wall is set, the instillation hole slot lower end is connected with instillation guider；The flange end cap On be correspondingly provided with the drip solution that is connected with instillation hole slot mouthful and the mouth spray connected with shower nozzle；The side of the liquid collecting bucket is opened up There is collection hole, collection hole periphery, which is fixed with sealing plate, the sealing plate, is provided with the blind plate matched by bolt, institute State and O-ring seal is provided between blind plate and sealing plate, the lower end of the liquid collecting head is provided with discharging tube.

2. according to claim 1 be used for the auxiliary extruder vacuum system cooler of film line, it is characterised in that described Flange end cap top is provided with suspension ring.

3. according to claim 1 be used for the auxiliary extruder vacuum system cooler of film line, it is characterised in that described The instillation hole slot lower end set along the edge of coldplate is connected with drip tube, and the mouth of pipe of the drip tube extends to the upper of coldplate Hold and instillation guider is installed at the mouth of pipe.