CN211921192U

CN211921192U - A coolant liquid filtration cycle system for easy open can production

Info

Publication number: CN211921192U
Application number: CN202020369811.XU
Authority: CN
Inventors: 郭映裕
Original assignee: Foshan Ruifeng Hengye Machinery Co ltd
Current assignee: Foshan Ruifeng Hengye Machinery Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-11-13
Anticipated expiration: 2030-03-20

Abstract

The utility model relates to a zip-top can processing technology field especially relates to a coolant liquid filtration cycle system for zip-top can production. The utility model provides a coolant liquid filtration cycle system for easy open can production, includes waste liquid case, sewage pump, coarse filtration device, sewage module, first water pump, smart filter equipment, water purification case, second water pump, cold heat exchanger and control system, the inlet of waste liquid case is connected with the coolant liquid output of stretcher, the inlet of waste liquid case still is connected with the coolant liquid output of product conveyer belt, the waste liquid case passes through the sewage pump with coarse filtration device connects, coarse filtration device with the sewage module is connected. An object of the utility model is to provide a coolant liquid filtration cycle system for easy open can production can form the circulation that collection, coarse filtration, fine filtration, temperature control, coolant liquid of coolant liquid were supplied with, can effectively promote production efficiency, reduction in production cost.

Description

A coolant liquid filtration cycle system for easy open can production

Technical Field

The utility model relates to a zip-top can processing technology field especially relates to a coolant liquid filtration cycle system for zip-top can production.

Background

The pop can is a common beverage or other liquid container made of metal materials, has the advantage of recycling, and has great advantages in energy conservation and emission reduction, limitation of plastic products and recycling. In the production of the can, a high-speed stretch forming process is important, in which a cooling process of a mold using a cooling liquid is required. Therefore, the circulation system of the cooling liquid greatly affects the yield of the drawn cans, and is one of the indispensable devices. At present more enterprise to the processing of coolant liquid, mainly through carry out coarse separation, natural sedimentation to the coolant liquid and filter and take back the reuse again, change until the coolant liquid is rotten after, can make the granule content of coolant liquid high usually, coolant liquid temperature is high, and is rotten easily, is difficult to control the quality of coolant liquid, and degree of automation is low, and production efficiency is low.

SUMMERY OF THE UTILITY MODEL

Problem to the background art provides, the utility model aims to provide a coolant liquid filtration circulation system for easy open can production can form the circulation that collection, coarse filtration, fine filtration, temperature control, the coolant liquid of coolant liquid were supplied with, can effectively promote production efficiency, reduction in production cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a cooling liquid filtering and circulating system for pop can production comprises a waste liquid tank, a sewage pump, a coarse filtering device, a sewage module, a first water pump, a fine filtering device, a purified water tank, a second water pump, a cold-heat exchanger and a control system, the liquid inlet of the waste liquid box is connected with the cooling liquid output end of the stretcher, the liquid inlet of the waste liquid box is also connected with the cooling liquid output end of the product conveyer belt, the waste liquid tank is connected with the coarse filtering device through the sewage pump, the coarse filtering device is connected with the sewage module, the sewage module is connected with the fine filtering device through the first water pump, the fine filtering device is connected with the purified water tank, the water purification case pass through the second water pump with cold heat exchanger connects, cold heat exchanger's output is connected with the coolant liquid input of stretcher, control system is used for controlling the coolant liquid filtration cycle system of whole easy open can production.

Preferably, the waste liquid tank comprises a first liquid level controller, a bottom valve and a first water drain valve, and the sewage pump comprises a first sewage pump and a second sewage pump; the first sewage pump and the second sewage pump are respectively connected with the waste liquid tank through suction pipes, the first liquid level controller is installed in the waste liquid tank, two bottom valves are arranged, one bottom valve is installed at the tail end of the suction pipe of the first sewage pump, the other bottom valve is installed at the tail end of the suction pipe of the second sewage pump, a first water discharge opening is formed in the bottom of the waste liquid tank, the first water discharge opening is connected with a first water discharge branch, and the first water discharge branch is provided with the first water discharge valve;

the output end of the first sewage pump is sequentially provided with a manual butterfly valve and a one-way valve, and the output end of the second sewage pump is sequentially provided with a manual butterfly valve and a one-way valve.

Preferably, the waste liquid tank further comprises a leakage liquid recovery device, the leakage liquid recovery device is arranged on one side of the output end of the first water drain valve, and the leakage liquid recovery device comprises a liquid collecting tank, a pneumatic diaphragm pump, a liquid level sensing device, an air inlet main pipeline, an air inlet branch pipeline, a pneumatic duplex piece, a ball valve and an automatic valve;

the liquid collecting tank is connected with one end of the pneumatic diaphragm pump, the other end of the pneumatic diaphragm pump is connected with a sewage station, and waste liquid in the liquid collecting tank is pumped to the sewage station through the pneumatic diaphragm pump;

compressed air is introduced into an external pipeline at the starting end of the air inlet main pipeline, the other end of the air inlet main pipeline is connected to the air inlet end of the pneumatic diaphragm pump, the air inlet branch pipeline is arranged at the starting end of the air inlet main pipeline, the tail end of the air inlet branch pipeline is connected to the air inlet end of the pneumatic diaphragm pump, a pneumatic two-way piece, an automatic valve and a ball valve are sequentially arranged between the air inlet end of the pneumatic diaphragm pump and the air inlet main pipeline from the input end of the compressed air, one end of the liquid level sensing device is connected with the automatic valve, the other end of the liquid level sensing device is connected with the liquid collecting tank, and the ball valve is connected between the air inlet end of the pneumatic diaphragm pump and the input end of the compressed air of the air inlet.

Preferably, the coarse filtration device comprises a coarse filter, a first pressure difference switch, a first water inlet pressure gauge, a first water outlet pressure gauge, an electromagnetic valve and a manual butterfly valve, the electromagnetic valve is installed at the liquid inlet end of the coarse filter, the manual butterfly valve is installed at the liquid outlet end of the coarse filter, a first liquid pressure measurement branch is further arranged from the liquid inlet end to the liquid outlet end of the coarse filter, and the first water inlet pressure gauge, the first pressure difference switch and the first water outlet pressure gauge are sequentially arranged on the first liquid pressure measurement branch along the water flow direction;

a first branch is further arranged between the waste liquid tank and the sewage module, the starting end of the first branch is connected to the liquid outlet end of the waste liquid tank, the tail end of the first branch is connected to the sewage module, and an electromagnetic valve is arranged on the first branch;

the feed liquor end of coarse filter is connected with the output of first air inlet pipeline, the external pipeline in top of first air inlet pipeline lets in compressed air, arrives from compressed air's input the feed liquor end of coarse filter has set gradually pneumatic trigeminy piece and solenoid valve, coarse filter's liquid return end through first liquid return pipeline with sewage module connects, first liquid return pipeline is provided with the solenoid valve, is close to the top of first liquid return pipeline is equipped with first liquid return branch road, the end-to-end connection of first liquid return branch road in sewage module, first liquid return branch road is provided with the solenoid valve.

Preferably, the sewage module comprises a sewage tank, an oil skimmer, a waste oil tank, a first overflow port, a second liquid level controller, a magnet, a heater and a second water drain valve, the oil skimmer is mounted at the top of the sewage tank, the waste oil tank is connected with the oil skimmer, the first overflow port is arranged at one end, close to the oil skimmer, of the outer side of the sewage tank, the second water drain port is arranged at the bottom of the sewage tank, the second water drain port is connected with a second water drain branch, the second water drain branch is provided with the second water drain valve, the second liquid level controller is mounted in the sewage tank, and the magnet and the heater are mounted at the bottom of the sewage tank;

the sewage treatment device comprises a sewage tank, a first water pump, a second water pump, a ball valve, a pressure gauge, a manual butterfly valve and a pressure relief valve, wherein the manual butterfly valve is connected between the output end of the first water pump and the output end of the sewage tank, the manual butterfly valve, the ball valve and the pressure gauge are sequentially connected between the output end of the first water pump and the input end of the sewage tank, and the manual.

Preferably, the top of the sewage tank is provided with a blending device, the blending device comprises a first liquid inlet, a second liquid inlet, a third liquid inlet, a ball valve, a flow meter, an electromagnetic valve, a proportional pump, a cooling liquid tank, a sampling ball valve and a stirrer, the first liquid inlet is connected with purified water and deionized water through a pipeline, the ball valve is arranged on a pipeline between the input ends of the purified water and the deionized water and the first liquid inlet, the second liquid inlet is connected with the purified water and the deionized water through a pipeline, the flow meter and the ball valve are sequentially arranged on a pipeline between the input ends of the purified water and the deionized water and the second liquid inlet, the third liquid inlet is connected with the purified water and the deionized water through a pipeline, the flow meter, the electromagnetic valve, the ball valve, the proportional pump, the sampling ball valve and the stirrer are sequentially arranged on a pipeline between the input ends of the purified, the proportional pump is externally connected with the cooling liquid tank.

Preferably, the fine filtering device comprises a first fine filtering device and a second fine filtering device, the first fine filtering device comprises a first fine filter, a second differential pressure switch, a second water inlet pressure gauge, a second water outlet pressure gauge and an electromagnetic valve, the electromagnetic valve is installed at the liquid inlet end of the first fine filter, the electromagnetic valve is installed at the liquid outlet end of the first fine filter, a second liquid pressure measuring branch is further arranged from the liquid inlet end to the liquid outlet end of the first fine filter, and the second water inlet pressure gauge, the second differential pressure switch and the second water outlet pressure gauge are sequentially arranged on the second liquid pressure measuring branch along the water flow direction;

the liquid inlet end of the first fine filter is connected with the output end of a second air inlet pipeline, compressed air is connected to the input end of the second air inlet pipeline, a pneumatic triple piece and an electromagnetic valve are sequentially arranged on the second air inlet pipeline from the input end of the compressed air to the liquid inlet end of the first fine filter, the liquid return end of the first fine filter is connected with the sewage module through a second liquid return pipeline, the second liquid return pipeline is provided with the electromagnetic valve, a second liquid return branch is arranged at the beginning end close to the second liquid return pipeline, the tail end of the second liquid return branch is connected with the sewage module, and the second liquid return branch is provided with the electromagnetic valve;

the second fine filtering device comprises a second fine filter, a third pressure difference switch, a third water inlet pressure gauge, a third water outlet pressure gauge and an electromagnetic valve, the electromagnetic valve is installed at the liquid inlet end of the second fine filter, the electromagnetic valve is installed at the liquid outlet end of the second fine filter, a third liquid pressure measuring branch is further arranged from the liquid inlet end to the liquid outlet end of the second fine filter, and the third water inlet pressure gauge, the third pressure difference switch and the third water outlet pressure gauge are sequentially arranged on the third liquid pressure measuring branch along the water flow direction;

the feed liquor end of second fine filter is connected with the output of third air inlet pipeline, compressed air is inserted to the input of third air inlet pipeline, third air inlet pipeline arrives from compressed air's input the feed liquor end of second fine filter has set gradually pneumatic trigeminy piece and solenoid valve, the liquid end that returns of second fine filter pass through third return liquid pipeline with sewage module connects, third return liquid pipeline is provided with the solenoid valve, is close to the top of third return liquid pipeline is equipped with third return liquid branch road, the end of third return liquid branch road connect in sewage module, third return liquid branch road is provided with the solenoid valve.

Preferably, the water purification tank comprises a third liquid level controller, a second overflow port, a third water discharge valve and a thermal resistor, the third liquid level controller is installed in the water purification tank, a second overflow port is arranged on one side wall of the water purification tank close to the top of the water purification tank, a third water discharge port is arranged at the bottom of the water purification tank, the third water discharge port is connected with a third water discharge branch, the third water discharge branch is provided with the third water discharge valve, and the thermal resistor is installed at the bottom of the water purification tank;

the top of the water purification tank is provided with a pressure stabilizing liquid inlet, the pressure stabilizing liquid inlet is connected with the tail end of a stretcher cooling liquid conveying pipeline, and the tail end of the stretcher cooling liquid conveying pipeline is sequentially connected with a ball valve, a pressure gauge and a pressure stabilizing valve;

the second water pump with be connected with manual butterfly valve between the water purification case, the output of second water pump has connected gradually manual butterfly valve and sample ball valve.

Preferably, still include the third water pump, the input of third water pump respectively with the output of sewage module with the output of clean water tank is connected, the output of third water pump respectively with smart filter equipment's input with cold heat exchanger's input is connected, the output of sewage module with be connected with manual butterfly valve between the input of third water pump, the output of third water pump with be connected with manual butterfly valve between smart filter equipment's the input, the output of clean water tank with be connected with manual butterfly valve between the input of third water pump, the output of third water pump with be connected with manual butterfly valve between cold heat exchanger's the input.

Preferably, a manual butterfly valve is arranged at the heat exchange input end, the heat exchange output end and the cold exchange output end of the cold-heat exchanger respectively, and an electromagnetic valve is arranged at the cold exchange input end of the cold-heat exchanger.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a coolant liquid after the drawing machine is accomplished to cool off and lubricate the mould is retrieved through the waste liquid case, through the sewage pump with the coolant liquid pump to the coarse filtration device carries out coarse filtration and handles, the coolant liquid gets into in the sewage case, through the first water pump will pump to the fine filtration device carries out fine filtration and handles, the coolant liquid after the filtration gets into the water purification case, then through the second water pump to the cold and heat exchanger accomplishes the cold and hot exchange to the coolant liquid, supplies to the drawing machine coolant liquid input, after the coolant liquid has accomplished the cooling and lubrication to the mould in the drawing machine, after flowing to the waste liquid case from the drawing machine coolant liquid output, the process of repeated filtration circulation, realize filtration and temperature control to the coolant liquid through this system, avoided the expend with heat and contract with cold of mould, in addition, through the sewage case sets up the blending device, the cooling liquid component configuration is completed, circulation of cooling liquid collection, coarse filtration, component configuration, fine filtration, temperature control and cooling liquid supply is formed, the production efficiency is effectively improved, and the production cost is reduced.

Drawings

The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.

Fig. 1 is a schematic structural view of a coolant filtration cycle system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a waste liquid tank according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a coarse filtering device according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a sewage module according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a fine filtering device according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a water purifying tank according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first water pump, a second water pump and a third water pump according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a heat exchanger according to an embodiment of the present invention;

wherein: the system comprises a stretcher 10, a product conveying belt 20, a waste liquid tank 30, a first liquid level controller 31, a bottom valve 32, a first water discharging port 33, a first water discharging branch 331, a first water discharging valve 332, a leaked liquid recovery device 34, a liquid collecting tank 341, a pneumatic diaphragm pump 342, a liquid level sensing device 343, a main air inlet pipeline 344, a branch air inlet pipeline 345, a pneumatic two-way joint 346, a sewage pump 40, a first sewage pump 41, a second sewage pump 42, a coarse filtering device 50, a coarse filter 51, a first pressure difference switch 52, a first water inlet pressure gauge 53, a first water outlet pressure gauge 54, a first branch 55, a first air inlet pipeline 56, a pneumatic three-way joint 57, a first liquid return pipeline 58, a first liquid return branch 59, a sewage module 60, a sewage tank 601, a skimmer 61, a waste oil tank 62, a first overflow port 63, a second liquid level controller 64, a magnet 65, a heater 66, a second water discharging port 67, a second water discharging branch 671, a water discharging port 671, A second water discharge valve 672, a first liquid inlet 681, a second liquid inlet 682, a third liquid inlet 683, a flowmeter 684, a proportioning pump 685, a coolant tank 686, a stirrer 687, a first water pump 70, a fine filter 80, a first fine filter 811, a second differential pressure switch 812, a second water inlet pressure gauge 813, a second water outlet pressure gauge 814, a second air inlet pipeline 815, a second liquid return pipeline 816, a second liquid return branch 817, a second fine filter 821, a third differential pressure switch 822, a third water inlet pressure gauge 823, a third water outlet pressure gauge 824, a third air inlet pipeline 825, a third liquid return pipeline 826, a third liquid return branch 827, a water purification tank 90, a third liquid level controller 91, a second overflow port 92, a third water discharge port 93, a third water discharge branch, a third water discharge valve 931, a thermal resistance 94, a pressure stabilizing liquid inlet 95, a second water pump 100, a cold-heat exchanger 110, a third water pump 120, a manual operation 1, The device comprises a one-way valve 2, a ball valve 3, an automatic valve 4, an electromagnetic valve 5, a pressure gauge 6, a pressure relief valve 7, a sampling ball valve 8 and a pressure stabilizing valve 9.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to the embodiments below.

As shown in fig. 1, a cooling liquid filtering circulation system for pop can production comprises a waste liquid tank 30, a sewage pump 40, a coarse filtering device 50, a sewage module 60, a first water pump 70, a fine filtering device 80, a clean water tank 90, a second water pump 100, a cold-heat exchanger 110 and a control system, wherein a liquid inlet of the waste liquid tank 30 is connected with a cooling liquid output end of a stretcher 10, a liquid inlet of the waste liquid tank 30 is further connected with a cooling liquid output end of a product conveyer belt 20, the waste liquid tank 30 is connected with the coarse filtering device 50 through the sewage pump 40, the coarse filtering device 50 is connected with the sewage module 60, the sewage module 60 is connected with the fine filtering device 80 through the first water pump 70, the fine filtering device 80 is connected with the clean water tank 90, the clean water tank 90 is connected with the cold-heat exchanger 110 through the second water pump 100, the output end of the cold-heat exchanger 110 is connected with the cooling liquid input end of the stretcher 10, and the control system is used for controlling the cooling liquid filtering and circulating system for the whole pop can production.

Preferably, the control system is a PLC electrical control system.

The coolant after cooling and lubricating the die by the stretcher 10 is recovered by the waste liquid tank 30, the coolant is pumped to the coarse filtering device 50 by the sewage pump 40 for coarse filtering treatment, the coolant after coarse filtering enters the sewage module 60, the coolant is conveyed to the fine filtering device 80 by the first water pump 70 for fine filtering treatment, the filtered coolant enters the clean water tank 90 and then is conveyed to the heat-cold exchanger 110 by the second water pump 100 for completing heat-cold exchange of the coolant, the coolant is supplied to the coolant input end of the stretcher 10, the coolant automatically flows to the waste liquid tank 30 from the coolant output end of the stretcher 10 after cooling and lubricating the die in the stretcher 10, and the control system is used for controlling the coolant filtering circulation system for producing the whole pop-top can to repeat the filtering circulation process, realize filtering and temperature control to the coolant liquid through this system, avoided the expend with heat and contract with cold of mould, form the circulation that collection, coarse filtration, fine filtration, temperature control, coolant liquid supply of coolant liquid, in addition, the easy open can after stretcher 10 handles passes through product conveyer belt 20 and carries process treatment on next step, because the easy open can is through tensile processing this moment, the remaining coolant liquid on the easy open can still to drip on product conveyer belt 20, export after using the liquid receiving disc to receive the coolant liquid on the product conveyer belt 20 the circulation is retrieved to waste liquid box 30, has improved the recovery effect to the coolant liquid, effectively promotes production efficiency, reduction in production cost.

As shown in fig. 2, it is preferable that the waste liquid tank 30 includes a first level controller 31, a bottom valve 32, and a first discharge valve 332, and the sewage pump 40 includes a first sewage pump and 41 a second sewage pump 42; the first sewage pump 41 and the second sewage pump 42 are respectively connected with the waste liquid tank 30 through suction pipes, the first liquid level controller 31 is installed in the waste liquid tank 30, two bottom valves 32 are provided, one bottom valve 32 is installed at the tail end of the suction pipe of the first sewage pump 41, the other bottom valve 32 is installed at the tail end of the suction pipe of the second sewage pump 42, a first water outlet 33 is arranged at the bottom of the waste liquid tank 30, the first water outlet 33 is connected with a first water outlet branch 331, and the first water outlet branch 331 is provided with the first water outlet valve 332;

the output end of the first sewage pump 41 is sequentially provided with a manual butterfly valve 1 and a check valve 2, and the output end of the second sewage pump 42 is sequentially provided with a manual butterfly valve 1 and a check valve 2.

Preferably, the first liquid level controller 31 is a floating ball liquid level meter, a reed pipe liquid level meter or a guided wave radar liquid level meter.

Preferably, the first liquid level controller 31 is a three-level float gauge, and the three-level float gauge is used for sensing three liquid levels, namely, a high liquid level, a medium liquid level and a low liquid level of the waste liquid tank.

The first liquid level controller 31 is arranged in the waste liquid tank 30 and is used for sensing the high liquid level, the middle liquid level and the low liquid level of the waste liquid tank respectively, the low liquid level sensing is used for protecting the drainage pump from evacuation, when the liquid level is too low, the first liquid level controller 31 sends a signal to close the check valve 2 connected with the first sewage pump 41 and the second sewage pump 42 so as to prevent evacuation, the middle liquid level sensing is used for sensing a normal working state, and when the high liquid level sensing is used, the sewage pump 40 is started; the bottom valve 32 is arranged, so that the liquid filled in the sewage pump 40 before starting can be prevented from flowing out of the pump, and the effect of preventing the water pump from being pumped out is achieved; the first drain valve 332 is arranged, so that the waste liquid tank 30 can be drained and cleaned conveniently; the first sewage pump 41 and the second sewage pump 42 are arranged, the manual butterfly valve 1 is connected to the output end of the first sewage pump 41 and the output end of the second sewage pump 42, the two sewage pumps are arranged for standby use, when one sewage pump is maintained, the two sewage pumps can be controlled to be used through the opening and closing of the manual butterfly valve 1, and the condition that the whole system cannot be used due to the maintenance of one sewage pump is prevented.

Preferably, the waste liquid tank further comprises a leaked liquid recovery device 34, the leaked liquid recovery device 34 is arranged on one side of the output end of the first drain valve 332, and the leaked liquid recovery device 34 comprises a liquid collecting tank 341, a pneumatic diaphragm pump 342, a liquid level sensing device 343, an air inlet main pipeline 344, an air inlet branch pipeline 345, a pneumatic duplex piece 346, a ball valve 3 and an automatic valve 4;

the liquid collecting tank 341 is connected with one end of the pneumatic diaphragm pump 342, the other end of the pneumatic diaphragm pump 342 is connected with a sewage station, and waste liquid in the liquid collecting tank 341 is pumped to the sewage station through the pneumatic diaphragm pump 342;

compressed air is introduced into an external pipeline at the beginning of the main air inlet pipeline 344, the other end of the main air inlet pipeline 344 is connected to the air inlet end of the pneumatic diaphragm pump 342, a branch air inlet pipeline 345 is arranged near the beginning of the main air inlet pipeline 344, the tail end of the branch air inlet pipeline 345 is connected to the air inlet end of the pneumatic diaphragm pump 342, a pneumatic two-way piece 346, an automatic valve 4 and a ball valve 3 are sequentially arranged between the input end of the compressed air and the air inlet end of the pneumatic diaphragm pump 342 in the main air inlet pipeline 344, one end of the liquid level sensing device 343 is connected with the automatic valve 4, the other end of the liquid level sensing device is connected with the collecting tank 341, and the ball valve 3 is connected between the input end of the compressed air and the air inlet end of the pneumatic diaphragm pump 342 in the branch air inlet.

The leaked liquid recovery device 34 is provided, the liquid collecting tank 341 collects leaked liquid of the waste liquid tank 30, when the liquid level sensing device 343 senses that the liquid level in the liquid collecting tank 341 is too high, a transmission signal opens the automatic valve 4, compressed air enters the pneumatic diaphragm pump 342 through the main air inlet pipe 344, the pneumatic diaphragm pump 342 is started to draw waste liquid out of the liquid collecting tank 341 to a sewage station, and in addition, the branch air inlet pipe 345 is provided, so that when the automatic valve 4 fails, the ball valve 3 connected to the branch air inlet pipe 345 can be manually opened to open the pneumatic diaphragm pump 342, thereby preventing the whole device from being unusable due to equipment failure.

As shown in fig. 3, preferably, the coarse filtering device 50 includes a coarse filter 51, a first differential pressure switch 52, a first water inlet pressure gauge 53, a first water outlet pressure gauge 54, an electromagnetic valve 5, and a manual butterfly valve 1, where a liquid inlet end of the coarse filter 51 is provided with the electromagnetic valve 5, a liquid outlet end of the coarse filter 51 is provided with the manual butterfly valve 1, a first liquid pressure measuring branch is further provided from the liquid inlet end to the liquid outlet end of the coarse filter 51, and the first water inlet pressure gauge 53, the first differential pressure switch 52, and the first water outlet pressure gauge 54 are sequentially provided in the first liquid pressure measuring branch along a water flow direction;

a first branch 55 is further arranged between the waste liquid tank 30 and the sewage module 60, the starting end of the first branch 55 is connected to the liquid outlet end of the waste liquid tank 30, the tail end of the first branch 55 is connected to the sewage module 60, and the first branch 55 is provided with an electromagnetic valve 5;

the feed liquor end of coarse filter 51 is connected with the output of first air inlet pipeline 56, the external pipeline in the top of first air inlet pipeline 56 lets in compressed air, from compressed air's input to coarse filter 51's feed liquor end has set gradually pneumatic trigeminy piece 57 and solenoid valve 5, coarse filter 51's the end of returning the liquid through first liquid return pipeline 58 with sewage module 60 is connected, first liquid return pipeline 58 is provided with solenoid valve 5, is close to the top of first liquid return pipeline 58 is equipped with first liquid return branch 59, the end-to-end connection of first liquid return branch 59 in sewage module 60, first liquid return branch 59 is provided with solenoid valve 5.

The first pressure difference switch 52 is adopted to monitor the pressure at the two ends of the liquid inlet end and the liquid outlet end of the coarse filter 51, when the pressure difference reaches 35psi, the first pressure difference switch 52 transmits a signal to the control system, the system alarms and automatically switches to a mode without coarse filtration, the wastewater directly enters the sewage module 60 from the waste liquid tank 30 through the first branch 55, the electromagnetic valve 5 on the first branch 55 is opened, the electromagnetic valve 5 connected with the liquid inlet end of the coarse filter 51 is closed, manual filter element replacement is needed at the moment, the mode can be switched to the coarse filtration mode by pressing a reset key after replacement, the requirement of continuous production can be met, particles in the cooling liquid are subjected to preliminary adsorption filtration through the coarse filter 51, and the use effect of the cooling liquid is improved; in addition, the first air inlet pipeline 56 is provided, and this pipeline is communicated with compressed air, when the filter element is replaced, the pneumatic triple part 57 and the electromagnetic valve 5 connected to the first air inlet pipeline 56 are started and opened, the electromagnetic valve 5 connected to the first liquid return pipeline 58 and the first liquid return branch 59 is opened, and the compressed air enters and forces out the residual liquid at the two ends of the filter element of the coarse filter 51 from the first liquid return pipeline 58 and the first liquid return branch 59 respectively, so that the replacement of the filter element is conveniently completed.

As shown in fig. 4, preferably, the sewage module 60 includes a sewage tank 601, an oil skimmer 61, a waste oil tank 62, a first overflow port 63, a second level controller 64, a magnet 65, a heater 66 and a second water discharge valve 672, the oil skimmer 61 is installed at the top of the sewage tank 601, the waste oil tank 62 is connected with the oil skimmer 61, the first overflow port 63 is arranged at one end of the outer side of the sewage tank 601 close to the oil skimmer 61, a second water discharge port 67 is arranged at the bottom of the sewage tank 601, a second water discharge branch 671 is connected to the second water discharge port 67, the second water discharge branch 671 is provided with the second water discharge valve 672, the second level controller 64 is installed in the sewage tank 601, and the magnet 65 and the heater 66 are installed at the bottom of the sewage tank 601;

the sewage treatment device comprises a first water pump 70 and a sewage tank 601, wherein a manual butterfly valve 1 is connected between the output end of the first water pump 70 and the output end of the sewage tank 601, the output end of the first water pump 70 is sequentially connected with the manual butterfly valve 1, a ball valve 3 and a pressure gauge 6, and the output end of the first water pump 70 and the input end of the sewage tank 601 are sequentially connected with the manual butterfly valve 1 and a pressure relief valve 7.

Preferably, the second level controller 64 is a float level meter, a reed pipe level meter or a guided wave radar level meter.

Preferably, the second liquid level controller 64 is a three-level float gauge, and the three-level float gauge is used for sensing the three high, medium and low liquid levels of the waste liquid tank.

The waste liquid in the sewage tank 601 is precipitated and subjected to oil-water separation, oil stains on the upper layer of the waste liquid are removed through the oil skimmer 61 arranged at the top of the sewage tank 601, and the waste liquid flows into the waste oil tank 62; the first overflow port 63 is arranged to prevent the waste liquid in the sewage tank 601 from overflowing too much; the second liquid level controller 64 is arranged to monitor the liquid level of the sewage tank 601; the magnet 65 is arranged to adsorb impurity iron particles in the cooling liquid; the heater 66 is arranged, and the heater 66 is arranged to heat the cooling liquid in order to ensure that the temperature of the cooling liquid is in a proper range during startup due to the large total amount of the cooling liquid; the second drain valve 672 is arranged, so that drainage and cleaning of the sewage tank 601 are facilitated; through first water pump 70 with connect between the output of sewage case 601 manual butterfly valve 1 controls the use of first water pump 70, just first water pump 70's output has connected gradually manual butterfly valve 1, ball valve 3 and manometer 6, monitors pipeline pressure, first water pump 70's output with manual butterfly valve 1 and pressure relief valve 7 have connected gradually between the input of sewage case 601, can realize automatic release when pipeline pressure reaches the highest pressure, prevent to cause the pipeline to burst scheduling problem because pipeline pressure is too big.

Preferably, a blending device is arranged at the top of the sewage tank and comprises a first liquid inlet 681, a second liquid inlet 682, a third liquid inlet 683, a ball valve 3, a flow meter 684, an electromagnetic valve 5, a proportional pump 685, a cooling liquid tank 686, a sampling ball valve 8 and a stirrer 687, wherein the first liquid inlet 681 is connected with purified water and deionized water through a pipeline, the ball valve 3 is arranged on a pipeline from the input ends of the purified water and the deionized water to the first liquid inlet 681, the second liquid inlet 682 is connected with the purified water and the deionized water through a pipeline, the flow meter 684 and the ball valve 3 are sequentially arranged on a pipeline from the input ends of the purified water and the deionized water to the second liquid inlet 682, the third liquid inlet 683 is connected with the purified water and the deionized water through a pipeline, and the flow meter 684, the flow meter 684 and the ball valve 3 are sequentially arranged on a pipeline from the input ends of the, The device comprises a solenoid valve 5, a ball valve 3, a proportional pump 685, a sampling ball valve 8 and a stirrer 687, wherein the proportional pump 685 is externally connected with the cooling liquid tank 686.

By arranging the blending device, the cooling liquid in the sewage tank 601 is subjected to liquid blending treatment, so that the components of the cooling liquid meet the requirements, the ball valve 3 is arranged on a pipeline from the input ends of purified water and deionized water to the first liquid inlet 681, and at the moment, the purified water and the deionized water enter the sewage tank 601 through the first liquid inlet 681, so that the sewage tank 601 can be cleaned; the flow meter 684 and the ball valve 3 are sequentially arranged on a pipeline from the input ends of the purified water and the deionized water to the second liquid inlet 682, and a certain amount of purified water and deionized water can be added into the sewage tank 601 through the flow meter 684; the flowmeter 684, the electromagnetic valve 5, the ball valve 3, the proportioning pump 685, the sampling ball valve 8 and the stirrer 687 are sequentially arranged on a pipeline from the input ends of the purified water and the deionized water to the third liquid inlet 683, the purified water and the deionized water can be proportionally mixed with the pure cooling liquid in the cooling liquid tank through the proportioning pump 685, the sampling ball valve 8 is arranged to sample and monitor the components of the mixed cooling liquid, and then the mixed cooling liquid is uniformly stirred by the stirrer 687 and then is added into the sewage tank 601 to complete the configuration of the cooling liquid in the sewage tank 601, so that the components of the cooling liquid are ensured to be constant.

As shown in fig. 5, preferably, the fine filtering device includes a first fine filtering device and a second fine filtering device, the first fine filtering device includes a first fine filter 811, a second differential pressure switch 812, a second water inlet pressure gauge 813, a second water outlet pressure gauge 814 and a solenoid valve 5, the solenoid valve 5 is installed at a liquid inlet end of the first fine filter 811, the solenoid valve 5 is installed at a liquid outlet end of the first fine filter 811, a second liquid pressure measuring branch is further provided from the liquid inlet end to the liquid outlet end of the first fine filter 811, and the second water inlet pressure gauge 813, the second differential pressure switch 812 and the second water outlet pressure gauge 814 are sequentially provided along a water flow direction by the second liquid pressure measuring branch;

the liquid inlet end of the first fine filter 811 is connected with the output end of a second air inlet pipeline 815, the input end of the second air inlet pipeline 815 is connected with compressed air, the second air inlet pipeline 815 is sequentially provided with a pneumatic triple part 57 and an electromagnetic valve 5 from the input end of the compressed air to the liquid inlet end of the first fine filter 811, the liquid return end of the first fine filter 811 is connected with the sewage module 60 through a second liquid return pipeline 816, the second liquid return pipeline 816 is provided with an electromagnetic valve 5, a second liquid return branch 817 is arranged near the beginning end of the second liquid return pipeline 816, the tail end of the second liquid return branch 817 is connected with the sewage module 60, and the second liquid return branch 817 is provided with an electromagnetic valve 5;

the second fine filtering device comprises a second fine filter 821, a third differential pressure switch 822, a third water inlet pressure gauge 823, a third water outlet pressure gauge 824 and an electromagnetic valve 5, the electromagnetic valve 5 is installed at the liquid inlet end of the second fine filter 821, the electromagnetic valve 5 is installed at the liquid outlet end of the second fine filter 821, a third liquid pressure measuring branch is further arranged from the liquid inlet end to the liquid outlet end of the second fine filter 821, and the third water inlet pressure gauge 823, the third differential pressure switch 822 and the third water outlet pressure gauge 824 are sequentially arranged on the third liquid pressure measuring branch along the water flow direction;

the liquid inlet end of the second fine filter 821 is connected with the output end of a third air inlet pipeline 825, the input end of the third air inlet pipeline 825 is connected with compressed air, the third air inlet pipeline 825 is sequentially provided with a pneumatic triple 57 and a solenoid valve 5 from the input end of the compressed air to the liquid inlet end of the second fine filter 821, the liquid return end of the second fine filter 821 is connected with the sewage module 60 through a third liquid return pipeline 826, the third liquid return pipeline 826 is provided with the solenoid valve 5, a third liquid return branch 827 is arranged at the beginning end close to the third liquid return pipeline 826, the tail end of the third liquid return branch 827 is connected to the sewage module 60, and the third liquid return branch 827 is provided with the solenoid valve 5.

The fine filtering device is provided with a first fine filtering device and a second fine filtering device for standby, the pressure at two ends of the liquid inlet end and the liquid outlet end of the first fine filter 811 is monitored by adopting the second pressure difference switch 812, the pressure at two ends of the liquid inlet end and the liquid outlet end of the second fine filter 821 is detected by adopting the third pressure difference switch 822, when the pressure difference of the first fine filter 811 (or the second fine filter 821) reaches 35psi, the second pressure difference switch 812 (or the third pressure difference switch 822) transmits a signal to the control system, the system alarms and automatically switches to a mode of using the second fine filtering device 821 (or the first fine filter 811), and at the moment, the electromagnetic valve 5 connected with the liquid inlet end of the first fine filter 811 (or the second fine filter 821) and the electromagnetic valve 5 connected with the liquid outlet end of the first fine filter 811 (or the second fine filter 821) are automatically closed, at this time, the filter element of the first fine filter 811 (or the second fine filter 821) needs to be replaced manually, so that the requirement of continuous production can be met; in addition, the second air inlet pipeline 815 is provided, and this pipeline is filled with compressed air, when the filter element is replaced, the pneumatic triple 57 and the solenoid valve 5 connected to the second air inlet pipeline 815 are activated and opened, the solenoid valves 5 on the second liquid return pipeline 816 and the second liquid return branch 817 are opened, and the compressed air enters to force the residual liquid at both ends of the filter element of the first fine filter 811 out of the second liquid return pipeline 816 and the second liquid return branch 817 respectively; the third air inlet pipeline 825 is provided, and compressed air is introduced into the third air inlet pipeline 825, when the filter element is replaced, the pneumatic triple 57 and the electromagnetic valve 5 connected to the third air inlet pipeline 825 are started and opened, the electromagnetic valve 5 on the third liquid return pipeline 826 and the third liquid return branch 827 are opened, and compressed air enters to force residual liquid at two ends of the filter element of the second fine filter 821 out of the third liquid return pipeline 926 and the third liquid return branch 827 respectively, so that replacement of the filter element is facilitated.

Preferably, the first fine filter 811 and the second fine filter 821 each use a resin filter element having a filtration accuracy of 5 μm.

The cooling liquid is finely filtered by the first fine filter 811 and the second fine filter 821, so that the filtering precision and the reliability are high, the particle size of the solid particles contained in the cooling liquid is ensured to be less than or equal to 5 mu m, and the equipment fault caused by blockage or abrasion of the stretcher 10 in the process of using the cooling liquid is avoided.

As shown in fig. 6, preferably, the clean water tank 90 includes a third liquid level controller 91, a second overflow port 92, a third water discharge valve 932 and a thermal resistor 94, the third liquid level controller 91 is installed in the clean water tank 90, a second overflow port 92 is provided on a side wall of the clean water tank 90 near the top, a third water discharge port 93 is provided at the bottom of the clean water tank 90, a third water discharge branch 931 is connected to the third water discharge port 93, the third water discharge branch 931 is provided with the third water discharge valve 932, and the thermal resistor 94 is installed at the bottom of the clean water tank 90;

the top of the water purifying tank 90 is provided with a pressure-stabilizing liquid inlet 94, the pressure-stabilizing liquid inlet 94 is connected with the tail end of a stretcher cooling liquid conveying pipeline, and the tail end of the stretcher cooling liquid conveying pipeline is sequentially connected with a ball valve 3, a pressure gauge 6 and a pressure-stabilizing valve 9;

second water pump 100 with be connected with manual butterfly valve 1 between the water purification case 90, the output of second water pump 100 has connected gradually manual butterfly valve 1 and sample ball valve 8.

Preferably, the third liquid level controller 91 is a floating ball liquid level meter, a reed pipe liquid level meter or a guided wave radar liquid level meter.

Preferably, the third liquid level controller 91 is a three-level float gauge, and the three-level float gauge is used for sensing three liquid levels, namely, a high liquid level, a medium liquid level and a low liquid level of the waste liquid tank.

Setting the third liquid level controller 91 to monitor the liquid level in the purified water tank 90; the second overflow port 92 is arranged to prevent the coolant in the clean water tank 90 from overflowing excessively; the third water drain valve 932 is arranged to drain and clean the purified water tank 90 conveniently; the thermal resistor 94 is arranged to detect the temperature of the coolant in the clean water tank 90, control the temperature of the coolant to be 43 +/-1 ℃, and when the temperature of the coolant is not in the range, the thermal resistor 94 provides an analog quantity signal, and the control system controls the on-off of the heater 66 in the sewage tank 601 by converting the control signal through a module, so that the temperature can be accurately controlled. The tail end of the cooling liquid conveying pipeline of the stretcher is sequentially connected with a ball valve 3, a pressure gauge 6 and a pressure stabilizing valve 9, when the pressure of the pipeline is higher than a set value, the control system controls the pressure stabilizing valve 9 to be opened, unused cooling liquid flows into the water purifying tank 90 through the pressure stabilizing valve 9, the accurate control of the pressure of the pipeline is realized, the pressure of the cooling liquid conveying pipeline of the stretcher is kept constant, the manual butterfly valve 1 is connected between the second water pump 100 and the water purifying tank 90, the output end of the second water pump 100 is connected with the manual butterfly valve 1, the use of the second water pump 100 can be controlled, the output end of the second water pump 100 is provided with the sampling ball valve 8, the components of the cooling liquid at the sampling point are analyzed, and the stable quality of the cooling liquid is guaranteed.

As shown in fig. 7, it is preferable that the system further includes a third water pump 120, an input end of the third water pump 120 is connected to an output end of the sewage module 60 and an output end of the purified water tank 90, an output end of the third water pump 120 is connected to an input end of the fine filtering device 80 and an input end of the cold-heat exchanger 110, a manual butterfly valve 1 is connected between the output end of the sewage module 60 and the input end of the third water pump 120, a manual butterfly valve 1 is connected between the output end of the third water pump 120 and the input end of the fine filtering device 80, a manual butterfly valve 1 is connected between the output end of the purified water tank 90 and the input end of the third water pump 120, and a manual butterfly valve 1 is connected between the output end of the third water pump 120 and the input end of the cold-heat exchanger.

By arranging the third water pump 120, when the first water pump 70 or the second water pump 100 fails, the third water pump 120 can be used as a substitute water pump, and the third water pump 120 can be controlled to substitute the first water pump 70 by the manual butterfly valve 1 connected between the output end of the sewage module 60 and the input end of the third water pump 120 and the manual butterfly valve 1 connected between the output end of the third water pump 120 and the input end of the fine filtering device 80; the use of the third water pump 120 in place of the second water pump 100 can be controlled by the manual butterfly valve 1 connected between the output end of the pure water tank 90 and the input end of the third water pump 120, and the manual butterfly valve 1 connected between the output end of the third water pump 120 and the input end of the cold-heat exchanger 110.

As shown in fig. 8, preferably, the heat exchange input end, the heat exchange output end and the cold exchange output end of the cold-heat exchanger 110 are respectively provided with a manual butterfly valve 1, and the cold exchange input end of the cold-heat exchanger 110 is provided with an electromagnetic valve 5.

The manual butterfly valve 1 is connected to the heat exchange input, the heat exchange output and the cold exchange output of the cold-heat exchanger 110, when the cold-heat exchanger needs to be cleaned and maintained, the manual butterfly valve 1 can be closed, the cold exchange input of the cold-heat exchanger 110 is connected with the electromagnetic valve 5, when the temperature of the coolant passing through the water purification tank 90 is not in the range of 43 +/-1 ℃, the thermal resistor 94 of the water purification tank 90 provides an analog signal, the control system controls the cold-heat exchanger 110 to heat or cool the coolant through module conversion control signals, when the temperature of the coolant passing through the water purification tank 90 is in the range of 43 +/-1 ℃, the thermal resistor 94 of the water purification tank 90 provides an analog signal, the control system controls the electromagnetic valve 5 to close through module conversion control signals, the cold-heat exchanger 110 does not heat or cool the coolant any more, and the temperature of the coolant is secondarily controlled by the heater 66 in the sewage tank 601 and the cold-heat exchanger 110.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A cooling liquid filtering and circulating system for pop can production is characterized by comprising a waste liquid tank, a sewage pump, a coarse filtering device, a sewage module, a first water pump, a fine filtering device, a water purifying tank, a second water pump, a cold-heat exchanger and a control system, wherein a liquid inlet of the waste liquid tank is connected with a cooling liquid output end of a stretcher, a liquid inlet of the waste liquid tank is further connected with a cooling liquid output end of a product conveying belt, the waste liquid tank is connected with the coarse filtering device through the sewage pump, the coarse filtering device is connected with the sewage module, the sewage module is connected with the fine filtering device through the first water pump, the fine filtering device is connected with the water purifying tank, the water purifying tank is connected with the cold-heat exchanger through the second water pump, and an output end of the cold-heat exchanger is connected with a cooling liquid input end of the stretcher, the control system is used for controlling the cooling liquid filtering and circulating system for the whole pop can production.

2. The cooling liquid filtering and circulating system for pop can production as claimed in claim 1, wherein the waste liquid tank comprises a first liquid level controller, a bottom valve and a first water discharge valve, and the sewage pump comprises a first sewage pump and a second sewage pump; the first sewage pump and the second sewage pump are respectively connected with the waste liquid tank through suction pipes, the first liquid level controller is installed in the waste liquid tank, two bottom valves are arranged, one bottom valve is installed at the tail end of the suction pipe of the first sewage pump, the other bottom valve is installed at the tail end of the suction pipe of the second sewage pump, a first water discharge opening is formed in the bottom of the waste liquid tank, the first water discharge opening is connected with a first water discharge branch, and the first water discharge branch is provided with the first water discharge valve;

3. The cooling liquid filtering and circulating system for pop can production as claimed in claim 2, wherein the waste liquid tank further comprises a leakage recovery device, the leakage recovery device is arranged at one side of the output end of the first water drain valve, and the leakage recovery device comprises a liquid collecting tank, a pneumatic diaphragm pump, a liquid level sensing device, an air inlet main pipeline, an air inlet branch pipeline, a pneumatic duplex piece, a ball valve and an automatic valve;

4. The cooling liquid filtering and circulating system for pop can production as claimed in claim 1, wherein the coarse filtering device comprises a coarse filter, a first pressure difference switch, a first water inlet pressure gauge, a first water outlet pressure gauge, an electromagnetic valve and a manual butterfly valve, the electromagnetic valve is installed at a liquid inlet end of the coarse filter, the manual butterfly valve is installed at a liquid outlet end of the coarse filter, a first liquid pressure measuring branch is further arranged from the liquid inlet end to the liquid outlet end of the coarse filter, and the first water inlet pressure gauge, the first pressure difference switch and the first water outlet pressure gauge are sequentially arranged on the first liquid pressure measuring branch along a water flow direction;

5. The cooling liquid filtering and circulating system for pop can production as claimed in claim 1, wherein the sewage module comprises a sewage tank, an oil skimmer, a waste oil tank, a first overflow port, a second liquid level controller, a magnet, a heater and a second water discharge valve, the oil skimmer is mounted on the top of the sewage tank, the waste oil tank is connected with the oil skimmer, the first overflow port is arranged at one end of the outer side of the sewage tank close to the oil skimmer, a second water discharge port is arranged at the bottom of the sewage tank, the second water discharge port is connected with a second water discharge branch, the second water discharge branch is provided with the second water discharge valve, the second liquid level controller is mounted in the sewage tank, and the magnet and the heater are mounted at the bottom of the sewage tank;

6. The cooling liquid filtering and circulating system for pop-top can production as claimed in claim 5, wherein a blending device is arranged at the top of the sewage tank, the blending device comprises a first liquid inlet, a second liquid inlet, a third liquid inlet, a ball valve, a flow meter, a solenoid valve, a proportional pump, a cooling liquid tank, a sampling ball valve and a stirrer, the first liquid inlet is connected with purified water and deionized water through a pipeline, the ball valve is arranged on the pipeline between the input ends of the purified water and the deionized water and the first liquid inlet, the purified water and the deionized water are connected with the second liquid inlet through a pipeline, the flow meter and the ball valve are sequentially arranged on the pipeline between the input ends of the purified water and the deionized water and the second liquid inlet, the purified water and the deionized water are connected with the third liquid inlet through a pipeline, and the flow meter and the ball valve are sequentially arranged on the pipeline between the input ends of the purified water and the, The cooling system comprises an electromagnetic valve, a ball valve, a proportional pump, a sampling ball valve and a stirrer, wherein the proportional pump is externally connected with a cooling liquid tank.

7. The cooling liquid filtering and circulating system for pop can production as claimed in claim 1, wherein the fine filtering device comprises a first fine filtering device and a second fine filtering device, the first fine filtering device comprises a first fine filter, a second differential pressure switch, a second water inlet pressure gauge, a second water outlet pressure gauge and an electromagnetic valve, the electromagnetic valve is mounted at a liquid inlet end of the first fine filter, the electromagnetic valve is mounted at a liquid outlet end of the first fine filter, a second liquid pressure measuring branch is further arranged from the liquid inlet end to the liquid outlet end of the first fine filter, and the second liquid pressure measuring branch is sequentially provided with the second water inlet pressure gauge, the second differential pressure switch and the second water outlet pressure gauge along a water flow direction;

8. The coolant filtering and circulating system for the production of pop cans of claim 1, wherein the clean water tank comprises a third level controller, a second overflow port, a third water discharge valve and a thermal resistor, the third level controller is installed in the clean water tank, a second overflow port is arranged on a side wall of the clean water tank close to the top of the clean water tank, a third water discharge port is arranged at the bottom of the clean water tank, a third water discharge branch is connected with the third water discharge port, the third water discharge branch is provided with the third water discharge valve, and the thermal resistor is installed at the bottom of the clean water tank;

9. The coolant filtering and circulating system for producing pop cans as recited in claim 1, further comprising a third water pump, wherein an input end of the third water pump is connected to the output end of the sewage module and the output end of the clean water tank, an output end of the third water pump is connected to the input end of the fine filtering device and the input end of the cold-heat exchanger, a manual butterfly valve is connected between the output end of the sewage module and the input end of the third water pump, a manual butterfly valve is connected between the output end of the third water pump and the input end of the fine filtering device, a manual butterfly valve is connected between the output end of the clean water tank and the input end of the third water pump, and a manual butterfly valve is connected between the output end of the third water pump and the input end of the cold-heat exchanger.

10. The coolant filtering and circulating system for the production of the can according to claim 1, wherein the heat exchange input end, the heat exchange output end and the cold exchange output end of the cold heat exchanger are respectively provided with a manual butterfly valve, and the cold exchange input end of the cold heat exchanger is provided with an electromagnetic valve.