CN206479086U - Comprehensive dual channel cools down Negative Pressure Batch hydrojet self-cleaning cooler - Google Patents

Abstract

The utility model is related to a kind of comprehensive dual channel cooling Negative Pressure Batch hydrojet self-cleaning cooler, 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

Comprehensive dual channel cools down Negative Pressure Batch hydrojet self-cleaning cooler

Technical field

The utility model is related to film line, particularly a kind of comprehensive dual channel cooling Negative Pressure Batch hydrojet self-cleaning Cooler.

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 Ingredients and Appearance, 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 Ingredients and Appearance 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 is that providing a kind of comprehensive dual channel cooling bears Interval hydrojet self-cleaning cooler is pressed, existing cooler construction is improved, self-cleaning is cleaned using comprehensive cooling, interval hydrojet Mode, while changing gas cooling flow passage structure and in setting up collection port on liquid collecting bucket, lift cooling effect, it is convenient to collect clear The dirt of accumulation is managed, production efficiency is improved.

Adopted the following technical scheme that for this utility model：

Comprehensive dual channel cools down Negative Pressure Batch hydrojet self-cleaning cooler, including cooler body, is connected by flange Flange end cap in cooler body upper end, and it is connected to by flange the liquid collecting bucket of cooler body lower end；The cooling Device main body is that cavity is provided with the double cylinder being made up of internal layer and outer layer, cooler body；Between the internal layer and outer layer Gap constitute cooling water jecket, and in be respectively equipped with the outer layer of cooler body connect with cooling water jecket first cool down The mixing 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, the center of the cooler body are provided with coldplate, and the both sides of the coldplate are fixed on 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, described Cooling water flow conduits are provided with coldplate, the outer layer of the cooler body is provided with the second cooling water connected with cooling water flow conduits Import and the second coolant outlet；The upper end of the cooler body internal cavity is provided with least two shower nozzles；The flange end cap On be correspondingly provided with the mouth spray connected with shower nozzle；The side of the liquid collecting bucket offers collection hole, and collection hole periphery is fixed Have and the blind plate matched is installed on sealing plate, the sealing plate by bolt, provided with O-shaped close between the blind plate and sealing plate Seal, the lower end of the liquid collecting head is provided with discharging tube.

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

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 shower nozzle that self-cleaning is cleaned for interval hydrojet, coordinate the mistake of negative pressure cleaning system Filter, pump and liquid level box, can be clean inside comprehensive holding cooler, 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；

Fig. 5 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 Part 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 Ingredients and Appearance 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.Shown in reference picture 4, provided with two mouth sprays connected with sparge pipe 331,332 in flange end cap 302 318（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.

Comprehensive dual channel cooling Negative Pressure Batch hydrojet self-cleaning cooler cleaning of the present utility model shown in reference picture 5 System, including cooler 401, filter 402, liquid level box 403 and pump 404.

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 liquid level box 403, and the liquid level box 403 is connected by being pumped into magnetic valve 414 with the import of pump 404, The outlet of the pump 404 passes sequentially through hydrojet magnetic valve 415 and hydrojet flow control valve 421,422 is covered with flange end 302 respectively On two mouth sprays 318 connect.

The filter 402 is provided with release ball valve 431 and Blowoff ball valve 432, and the liquid level box 403 is provided with by liquid electricity Magnet valve 413 and liquid level gauge 405；The second cooling water inlet 314 in the cooler body 303 of cooler 401 is connected by ball valve 416 Connect cooling water inlet pipe.

Utility model works process is as follows：

Negative Pressure Batch hydrojet is cleared up：When PET film production line stop, auxiliary extruder vacuum system need not reach negative pressure During power operating mode standard, hydrojet cleaning is carried out, hydrojet uses triethylene glycol, and triethylene glycol gasification point, will not be because of vaporizing volume up to 285 DEG C Expand and influence the auxiliary extruder vacuum system negative pressure operating mode standard of PET film production line.Hydrojet sprays from shower nozzle 333,334, The wall of 401 inside internal layer of cooler 319, the dirt on coldplate 305, dust are rinsed, and pours cooler liquid collecting bucket 313.

Will can keep vacuum system negative pressure operating mode standard, can only PET film production line stop when, auxiliary extruder vacuum system System is cleaned when need not reach negative pressure operating mode standard, in order to coordinate the manner of cleaning up of above-mentioned cooler to be smoothed out, Overall negative pressure cleaning system is needed to realize.

The dust, dirt, cleaning fluid for falling into cooler liquid collecting bucket 313 enter the mistake of filter 402 by the first magnetic valve 411 Filter, filtering removes dirt, and dirt is discharged through Blowoff ball valve 432, and the cleaning fluid after filtering enters liquid level box through the second magnetic valve 412 403, during cleaning, enter pump 404 through being pumped into magnetic valve 414, and sparge pipe is pumped into through hydrojet magnetic valve 415, then by hydrojet flow Regulating valve 421, hydrojet flow control valve 422 enter shower nozzle 333, inside 334 cleaning showers coolers 401.When hydrojet is not enough, Can be by supplementing hydrojet by liquid electromagnetic valve 413.

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 (2)

1. comprehensive dual channel cools down Negative Pressure Batch hydrojet self-cleaning cooler, including cooler body, it is connected to by flange The flange end cap of cooler body upper end, and it is connected to by flange the liquid collecting bucket of cooler body lower end；The cooler Main body is that cavity is provided with the double cylinder being made up of internal layer and outer layer, cooler body；Between the internal layer and outer layer Gap constitutes cooling water jecket, and in being respectively equipped with the first cooling water for being connected with cooling water jecket on the outer layer of cooler body The gaseous mixture of connection cooler body internal cavity is additionally provided with import and the first coolant outlet, the outer layer of the cooler body Body entrance and mixed gas outlet, it is characterised in that the center of the cooler body is provided with coldplate, the two of the coldplate Side is fixed on the internal layer of cooler body, and the upper end of coldplate is separated with flange end cap is divided into upper and lower double coolings by cavity Cooling water flow conduits are provided with runner, the coldplate, the outer layer of the cooler body is provided with what is connected with cooling water flow conduits Second cooling water inlet and the second coolant outlet；The upper end of the cooler body internal cavity is provided with least two shower nozzles；Institute State the mouth spray for being correspondingly provided with and being connected with shower nozzle in flange end cap；The side of the liquid collecting bucket offers collection hole, the collection Hole periphery, which is fixed with sealing plate, the sealing plate, is provided with the blind plate matched by bolt, the blind plate and sealing plate it Between be provided with O-ring seal, the lower end of the liquid collecting head is provided with discharging tube.

2. comprehensive dual channel cooling Negative Pressure Batch hydrojet self-cleaning cooler according to claim 1, it is characterised in that The flange end cap top is provided with suspension ring.