CN108635954B - Fountain solution compensation circulation system - Google Patents
Fountain solution compensation circulation system Download PDFInfo
- Publication number
- CN108635954B CN108635954B CN201810663339.8A CN201810663339A CN108635954B CN 108635954 B CN108635954 B CN 108635954B CN 201810663339 A CN201810663339 A CN 201810663339A CN 108635954 B CN108635954 B CN 108635954B
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- Prior art keywords
- tank
- output end
- filtering
- joint
- input end
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- 238000001914 filtration Methods 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 230000001502 supplementing effect Effects 0.000 claims abstract description 28
- 238000007639 printing Methods 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000000872 buffer Substances 0.000 claims description 70
- 239000000243 solution Substances 0.000 claims description 58
- 239000007788 liquid Substances 0.000 claims description 53
- 239000011259 mixed solution Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 14
- 238000003828 vacuum filtration Methods 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 239000012510 hollow fiber Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000000967 suction filtration Methods 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/32—Ducts, containers, or like supply devices for liquids
Abstract
The invention discloses a fountain solution compensation circulation system, which comprises a printer water tank, wherein the printer water tank is sequentially communicated with a filtering device and a water solution supplementing device through a connecting pipeline by an output interface, and is returned to the other inlet of the printer water tank by an output pipeline of the water solution supplementing device, so that a circulation pipeline is formed; the filtering device comprises an upper joint, a lower joint and a filtering tank, wherein the upper joint and the lower joint are respectively and correspondingly fixed on the side wall of a water tank of the printing machine through a bracket, the input end of the upper joint and the output end of the lower joint are respectively and sequentially connected with a connecting pipeline in a circulating pipeline, the center of the lower joint is vertically provided with a vertical shaft, the filtering tank is sleeved on the vertical shaft in a central way and can rotate by taking the vertical shaft as an axis, 3 groups of identical independent filtering chambers are symmetrically arranged on the filtering tank along the axis, and the top input ends and the bottom output ends of the 3 groups of independent filtering chambers are respectively in butt joint communication with the upper joint and the lower joint through rotation to form a passage.
Description
Technical Field
The invention relates to the technical field of printing treatment equipment, in particular to a fountain solution compensation circulation system.
Background
The problem of effective utilization of fountain solution is the problem to be solved in the industry all the time, and the prior technical scheme mainly comprises the steps of primary filtering, fine filtering, and finally entering a fountain solution adding water tank, detecting various indexes in the water tank, and adding various buffering agents or new substances such as fountain solution, alcohol and water into the water tank according to detection results so as to achieve the use standard of the fountain solution. Therefore, the prior art has some defects, mainly expressed in that:
1. in the process of circulating filtration of the fountain solution, the filter medium can only be removed by back flushing and other modes when being blocked, and can not be switched in time, so that the replacement without stopping is realized, the filtration efficiency is lower and lower, and finally, the water tank is easily pumped out and overflows when the filter medium is blocked, equipment is damaged, and resources are wasted.
2. All index detection and buffer solution addition are in the same water tank, so that the problems of uneven solution mixing and the like can be caused, and the detection error phenomenon occurs, so that the solution compensation effect is influenced.
Disclosure of Invention
The invention aims at the defects of the prior art and provides a fountain solution circulating system which has the characteristics and the capability of quickly replacing a filter medium and uniformly mixing a solution.
The invention adopts the following technical scheme to solve the technical problems: a fountain solution compensation circulation system comprises a printer water tank matched with a printer water bucket groove, wherein the printer water tank is sequentially communicated with a filtering device, a water solution supplementing device and a cooling device through a connecting pipeline by an output interface, and is returned to the other inlet of the printer water tank through an output pipeline of the cooling device, so that a fountain solution circulation pipeline for a printer is formed; the filtering device comprises an upper connector, a lower connector and a filtering tank, wherein the upper connector and the lower connector are respectively and correspondingly fixed on the side wall of a water tank of the printing machine through a bracket, the input end of the upper connector and the output end of the lower connector are respectively and sequentially connected with a connecting pipeline in a circulating pipeline, a vertical shaft is vertically arranged at the center of the lower connector, the filtering tank is sleeved on the vertical shaft and can rotate by taking the vertical shaft as an axis, 3 groups of independent filtering chambers which are the same are symmetrically arranged on the filtering tank along the axis, and the top input ends and the bottom output ends of the 3 groups of independent filtering chambers are respectively in butt joint communication with the upper connector and the lower connector through rotation to form a passage. The system realizes the rapid switching of the filter medium in a rotary butt joint mode of the filter tank, and enables various technical indexes of the mixed solution to meet the use requirement through the water-liquid supplementing device and the cooling device.
Preferably, the filtering tank is a cylindrical member, a through hole is formed in the center of the filtering tank, and a plurality of ball bearings are arranged in the through hole; the vertical shaft penetrates through the through hole and the ball bearings in the through hole to form interference connection with the filter tank, so that the filter tank has the capability of rotating by taking the vertical shaft as an axis; the top surface of the filtering tank is symmetrically provided with 3 identical vertical downward grooves along the outer edges of the through holes for placing 3 groups of independent filtering chambers, and the bottoms of the grooves are provided with drain holes; the independent filter chamber includes filter core, top cap, input end and output end, the filter core sets up in the recess, top cap detachably sets up the upper portion of recess and will the filter core butt is fixed in the recess, the input end sets up on the top cap, the bottom of input end passes the top cap stretches into in the filter core, the top of input end with the top connection intercommunication, the output end sets up the lower part of flowing back hole, the bottom of output end passes the flowing back hole and stretches into in the recess, the bottom of output end is provided with soft seal head, be used for with the sealed jam in space between flowing back hole and the output end, the top of output end with the lower extreme intercommunication.
The top end of the input end is of an umbrella-shaped structure, a jacking spring is sleeved between the top end of the input end and the top cover, and two ends of the jacking spring are fixedly connected with the input end and the top cover respectively, so that the input end has an up-down elastic reset capability; the upper joint bottom corresponds to the top of the input end and is provided with a horn-shaped upper interface, the upper interface is located on the rotating running track of the input end, a soft sealing ring is arranged on the inner wall of the upper interface, two sides of the upper interface are provided with arc-shaped limiting through grooves along the rotating running track of the input end, and the width of each arc-shaped limiting through groove is slightly larger than the maximum outer diameter of the top of the input end.
Preferably, the top end of the output end is of an umbrella-shaped structure, a downward-pressing spring is sleeved between the top end of the output end and the bottom surface of the filter tank, and two ends of the downward-pressing spring are fixedly connected with the output end and the bottom surface of the filter tank respectively, so that the output end has an up-and-down elastic resetting capability; the upper surface of the lower joint takes the vertical shaft as the center, a circular limiting groove is formed in the upper surface of the lower joint, the circular limiting groove coincides with the rotation running track of the output end, 3 identical bell-mouthed lower interfaces are symmetrically formed in the circular limiting groove, which corresponds to the top end of the output end, the 3 lower interfaces coincide with the relative positions of the output ends of the 3 groups of independent filter chambers respectively, 1 lower interface coincides with the upper interface in the vertical position, a soft sealing ring is arranged on the inner wall of the lower interface, the width of the circular limiting groove is slightly larger than the maximum outer diameter of the top end of the output end, and the 3 lower interfaces are communicated with the output end of the lower joint respectively.
Preferably, a vacuum filtration tank is arranged between the lower joint output end and the connecting pipeline, two ends of the vacuum filtration tank are respectively communicated with the lower joint output end and the connecting pipeline to form a passage, a suction filtration interface is arranged on the side wall of the vacuum filtration tank, and the suction filtration interface is connected with a vacuum pump through a rubber pipe.
Optimally, the input end of the upper joint is provided with a buffer device, and the buffer device comprises a buffer tube, an electromagnetic control valve, a buffer piston and a bearing spring; the buffer tube is of a hollow structure, the buffer tube is vertical and fixedly arranged on the upper joint, the bottom end of the buffer tube is communicated with the input end of the upper joint, the middle part of the buffer tube is provided with a circulating liquid input port, the circulating liquid input port is communicated with the connecting pipeline, and the top of the buffer tube is provided with an L-shaped bearing support rod; the electromagnetic control valve is arranged on the wall of the buffer tube between the bottom end of the buffer tube and the circulating liquid input port and is used for controlling the input of the circulating liquid of the fountain solution; the buffer piston is arranged in the upper part of the buffer tube, and the outer diameter of the buffer piston is slightly smaller than the inner diameter of the buffer tube; one end of the bearing spring is connected with the top of the buffer piston, and the other end of the bearing spring is connected with the L-shaped cross rod of the bearing support rod to form bearing for the buffer piston.
Preferably, the filter element comprises two layers of U-shaped shells sleeved outside and inside, wherein the upper end of the inner shell is communicated with the input end, an external thread is arranged on the outer wall of the neck of the inner shell, an internal thread is correspondingly arranged on the inner wall of the port of the outer shell, and the outer shell is in threaded connection with the inner shell through the internal thread; the upper part of the external thread of the inner shell is provided with an annular wall-hanging skirt, the inner wall of the groove is provided with an annular wall-hanging step corresponding to the wall-hanging skirt, the inner shell and the outer shell are suspended and bear in the groove through the wall-hanging skirt, and a gap exists between the bottom of the outer shell and the concave bottom of the groove; the top cover is of a concave-surface downward groove-shaped structure, the concave inner wall of the top cover is sleeved on the outer wall of the port at the upper end of the inner shell and props against the wall-hanging skirt, an external thread is arranged on the concave outer wall of the top cover, an internal thread is arranged at the corresponding position of the groove, and the top cover is in threaded connection with the groove through the external thread; a plurality of filter holes are formed in the side walls of the inner shell and the outer shell so as to form a passage, filter cotton is filled in the inner shell, a hollow fiber membrane filter layer is arranged in the outer shell, and the filter cotton is soaked in a nano silver solution and dried, so that the filter cotton soaked with fountain solution is prevented from being contacted with air in the using or standing process, and mildew or mould is generated.
The use process of the filtering device is as follows: in the process that mixed solution flows out of a water tank of a printing machine and is filtered by a filtering tank, when a period of time is required, more filtering impurities are filtered, a filtering medium is blocked, when a filter element needs to be replaced, an electromagnetic control valve on a buffer tube is firstly closed, circulating liquid is stopped, the filtering tank is rotated again, an independent filtering chamber in use is separated from an upper joint and a lower joint, a next group of independent filtering chambers to be used are connected into the upper joint and the lower joint in a homeotropic manner, the separation process and the connection process mainly depend on the elastic reset function of an input end and an output end at the upper end and the lower end of the independent filtering chamber, the input end and the output end are compressed and slide out along the inner wall of a horn-shaped interface through rotating the horizontal acting force applied, and when the next group of the input end and the output end are sequentially rotated to the horn-shaped interface, the interface is pushed under the action of a spring to realize the butt joint, the switching is completed, and an arc-shaped limit through groove on the upper joint and a circular ring-shaped limit groove on the lower joint are used for limiting the movement track of the input end and the output end, so that the rotation process is stable and accurate; after the switching is finished, an electromagnetic control valve on the buffer tube is opened, a passage is opened, and the mixed solution is recovered to flow circulation;
the buffer device has the effects that when the buffer tube is closed, the mixed solution in the circulating pipeline continues to flow and discharge, the buffer piston is gradually filled in the inner wall space at the upper part of the buffer tube, and is jacked upwards, when the buffer piston is jacked to a certain height, the pressure conversion is realized by the bearing spring at the upper part of the buffer piston, the downward resilience force is applied to the buffer piston, the mixed solution in the circulating pipeline is further pressed to continue to flow, until the electromagnetic control valve is opened, and the rotation switching of the filter tank can be completed in the period of time;
when the switched independent filter chamber moves out of the upper joint, most of filtrate remains in the independent filter chamber, the output end at the bottom of the independent filter chamber is still communicated with the lower joint, at the moment, the vacuum suction pump is started to perform vacuum suction filtration on the independent filter chamber, the filtrate enters the vacuum suction filtration tank through the output end, the lower joint and the inner pipeline of the lower joint and flows into the circulating pipeline at the lower stage, and the vacuum suction filtration process only acts on the empty independent filter chamber due to the fact that the vacuum suction filtration pump is dependent on air circulation, no influence is caused on the independent filter chamber in use, and the vacuum suction filtration pump is closed after the suction filtration is completed;
the filter layer in the independent filter chamber after switching is completed is replaced, the top cover is unscrewed firstly, the limit of the top cover on the filter element is removed, the filter element is extracted, the filter cotton filter layer in the inner shell is taken out, the outer shell is unscrewed, the hollow fiber membrane filter layer in the outer shell is taken out, then a new hollow fiber membrane filter layer is put in, the outer shell after replacing the filter layer is screwed in the outer wall of the inner shell, and finally the new filter cotton filter layer is put in the inner shell, so that the replacement of the filter element is completed; inserting the replaced filter element into the original filter tank groove, installing and screwing the top cover to fix the filter element, thereby completing the resetting of the independent filter chamber and waiting for the next switching use;
in the design of the inner shell and the outer shell, a plurality of filtering holes are formed in the side walls of the inner shell and the outer shell, and the bottoms of the filtering holes are closed (U-shaped pipe structures) so as to ensure that filtered liquid is filtered out from the side walls of the shells only and cannot be gathered at the bottoms of the shells, so that the filter element is more uniform in use, and the service life and the filtering efficiency are higher; secondly, the filter element is suspended in the groove of the filter tank, so that a liquid draining space and a liquid draining channel are formed between the filter hole of the filter element and the liquid draining hole at the bottom of the groove, and the flow of filtrate is smooth.
The water replenishing device comprises a replenishing cavity, a water replenishing tank, a fountain solution replenishing tank, a detection device and a control device, wherein two ends of the replenishing cavity are respectively communicated with the circulating pipeline, a water replenishing interface and a fountain solution replenishing interface are arranged at the input end of the replenishing cavity, the water replenishing interface is connected with the output end of the water replenishing tank through a rubber pipe, the fountain solution replenishing interface is connected with the output end of the fountain solution replenishing tank through another rubber pipe, and replenishing liquid control valves are arranged at the output ends of the water replenishing tank and the fountain solution replenishing tank; the detection device comprises a floating ball which is arranged in the water tank of the printing machine and can float on the surface of liquid to detect the liquid level of the mixed solution, the control device receives the height information of the floating ball, and the control valve of the replenishing liquid is controlled to be opened when the floating ball is lower than the preset height; a driving pump is arranged on a circulating pipeline between the water liquid supplementing device and the cooling device, and the driving pump pumps the mixed solution flowing through the water liquid supplementing device into the cooling device.
Preferably, the detection device further comprises a conductivity sensor for detecting the conductivity value of the mixed solution in the water tank of the printing machine and sending out a signal, and the control device receives the signal sent out by the conductivity sensor and controls the opening of the replenishment liquid control valve when the detected conductivity value is lower than a preset value.
The invention has the advantages that: the invention adopts the design of the rotary filter tank and the accessory device thereof, realizes the rapid switching of the filter medium, does not influence the recycling of the mixed solution, and has good practical value; the invention carries out water replenishing treatment on the fountain solution in the circulation process, thereby effectively improving the reuse performance and the use efficiency of the fountain solution.
Drawings
FIG. 1 is a schematic diagram of the overall layout of a fountain solution recycling system according to an embodiment;
FIG. 2 is a schematic view showing an internal structure of a condensation cooling device according to an embodiment;
FIG. 3 is a schematic view showing the overall structure of a filtering device according to an embodiment;
FIG. 4 is a top view of a lower adapter of the filter device of the embodiment;
FIG. 5 is a schematic view showing a partially enlarged structure of a filtering device in an embodiment;
FIG. 6 is a schematic diagram showing an internal structure of a buffer device according to an embodiment;
fig. 7 is a schematic view of the internal structure of the filter element according to the embodiment.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a fountain solution circulation treatment system comprises a printer water tank 1 matched with a printer water bucket, wherein the printer water tank 1 is sequentially communicated with a filtering device 3, a water liquid supplementing device 4 and a cooling device 5 through a connecting pipeline 2 by an output interface, and is returned to the other inlet of the printer water tank 1 through an output pipeline of the cooling device 5, so that a fountain solution circulation pipeline for a printer is formed; the filtering device 3 comprises an upper joint 31, a lower joint 32 and a filtering tank 33, the upper joint 31 and the lower joint 32 are respectively and correspondingly fixed on the side wall of the water tank 1 of the printing machine through a bracket 34, the input end of the upper joint 31 and the output end of the lower joint 32 are respectively and sequentially connected with a connecting pipeline 2 in a circulating pipeline, a vertical shaft 35 is vertically arranged at the center of the lower joint 32, the filtering tank 23 is sleeved on the vertical shaft 35 in a central way and can rotate by taking the vertical shaft 35 as an axis, and the top input end and the bottom output end of 3 groups of independent filtering chambers 36,3 of the same independent filtering chambers 36 are symmetrically arranged on the filtering tank 33 along the axis and can be respectively in butt joint communication with the upper joint 31 and the lower joint 32 through rotation to form a passage.
The water replenishing device 4 comprises a replenishing cavity 41, a water replenishing tank 42, a fountain solution replenishing tank 43, a detection device 44 and a control device 45, wherein two ends of the replenishing cavity 41 are respectively communicated with the circulating pipeline, a water replenishing interface 411 and a fountain solution replenishing interface 412 are arranged at the input end of the replenishing cavity 41, the water replenishing interface 411 is connected with the output end of the water replenishing tank 42 through a rubber pipe, the fountain solution replenishing interface 412 is connected with the output end of the fountain solution replenishing tank 43 through another rubber pipe, and the replenishing liquid control valves 46 are respectively arranged at the output ends of the water replenishing tank 42 and the fountain solution replenishing tank 43; the detecting device 44 comprises a floating ball 441 which is arranged in the printer water tank 1 and can float on the surface of liquid to detect the liquid level of the mixed solution, and a conductivity sensor 442 which is used for detecting the conductivity value of the mixed solution in the printer water tank 1 and sending out a signal, and the control device 45 receives the signal sent out by the conductivity sensor 442 and controls the opening of the replenishment liquid control valve 46 when the detected conductivity value is lower than a preset value; the control device 45 receives the height information of the floating ball 441, and controls the replenishment liquid control valve 46 to be opened when the floating ball 441 is lower than a preset height so as to replenish the fountain solution and the water; a driving pump 6 is arranged on a circulating pipeline between the water-liquid supplementing device 4 and the cooling device 5, and the driving pump 6 pumps the mixed solution flowing through the water-liquid supplementing device 4 into the cooling device 5.
As shown in fig. 2, the cooling device 5 includes a liquid return cavity 51 and a circulating condensate pipe 52, two ends of the liquid return cavity 51 are respectively communicated with the circulating pipeline, a spiral diversion trench 53 is disposed in the liquid return cavity 51, and an input port and an output port of the liquid return cavity 51 are both disposed along the spiral diversion trench 53 in an outward extending manner; the circulating condensate water pipe 52 is arranged on the outer wall of the liquid return cavity 51, the circulating condensate water pipe 52 is externally connected with condensate water, and the circulating direction of the condensate water is consistent with the circulating direction of the liquid return cavity 51. The spiral diversion trench 53 in the liquid return cavity 51 and the extending design of the two end ports of the liquid return cavity 51 aim at enabling the mixed solution flowing through the liquid return cavity to form high-speed rotary flow, so that the mixed solution is more uniform, and the subsequent performance test and use are facilitated.
As shown in fig. 3-5, the filter tank 33 is a cylindrical member, a through hole 331 is formed in the center of the filter tank 33, and a plurality of ball bearings 332 are disposed in the through hole 331; the vertical shaft 35 passes through the through hole 331 and the ball bearings 332 therein to form interference connection with the filter tank 33, so that the filter tank 33 has the capability of rotating around the vertical shaft 35 as an axis; the top surface of the filtering tank 33 is symmetrically provided with 3 identical vertical downward grooves 333 along the outer edge of the through hole 331 for placing 3 groups of independent filtering chambers 36, and the bottom of the grooves 333 is provided with a drain hole 334; the independent filter chamber 36 comprises a filter element 361, a top cover 362, an input end 363 and an output end 364, wherein the filter element 361 is arranged in the groove 333, the top cover 362 is detachably arranged at the upper part of the groove 333 and is used for fixing the filter element 361 in the groove 333 in a butt joint manner, the input end 363 is arranged on the top cover 362, the bottom end of the input end 363 penetrates through the top cover 362 and stretches into the filter element 361, the top end of the input end 363 is communicated with the upper joint 31, the output end 364 is arranged at the lower part of the drain hole 334, the bottom end of the output end 364 penetrates through the drain hole 334 and stretches into the groove 333, the bottom end of the output end 364 is provided with a soft sealing head 365 for sealing and blocking a gap between the drain hole 334 and the output end 364, and the top end of the output end 364 is communicated with the lower joint.
The top end of the input end 363 is in an umbrella-shaped structure, a jacking spring 366 is sleeved between the top end of the input end 363 and the top cover 362, and two ends of the jacking spring 366 are fixedly connected with the input end 363 and the top cover 362 respectively, so that the input end 363 has an up-down elastic reset capability; the bottom of the upper joint 31 is provided with a bell-mouth-shaped upper interface 311 corresponding to the top end of the input end 363, the upper interface 311 is located on the rotation running track of the input end 363, the inner wall of the upper interface 311 is provided with a soft sealing ring 312, two sides of the upper interface 311 are provided with arc limiting through grooves 313 along the rotation running track of the input end 363, and the width of the arc limiting through grooves 313 is slightly larger than the maximum outer diameter of the top end of the input end 363.
The top end of the output end 364 is in an umbrella-shaped structure, a pressing spring 367 is sleeved between the top end of the output end 364 and the bottom surface of the filter tank 33, and two ends of the pressing spring 367 are fixedly connected with the output end 364 and the bottom surface of the filter tank 33 respectively, so that the output end 364 has an up-and-down elastic resetting capability; the upper surface of the lower joint 32 is provided with a circular limiting groove 321 by taking the vertical shaft 35 as the center, the circular limiting groove 321 coincides with the rotation running track of the output end 364, 3 identical bell-mouthed lower interfaces 322 are symmetrically arranged on the circular limiting groove 321 corresponding to the top end of the output end 364, the 3 lower interfaces 322 coincide with the relative positions of the output ends 364 of the 3 groups of independent filter chambers 36 respectively, 1 lower interface 322 coincides with the upper interface 311 in the vertical position, the inner wall of the lower interface 322 is provided with a soft sealing ring 323, the width of the circular limiting groove 321 is slightly larger than the maximum outer diameter of the top end of the output end 364, and the 3 lower interfaces 322 are respectively communicated with the output ends of the lower joint 32.
The vacuum filter tank 7 is arranged between the output end of the lower connector 32 and the connecting pipeline 2, two ends of the vacuum filter tank 7 are respectively communicated with the output end of the lower connector 32 and the connecting pipeline 2 to form a passage, a suction filter interface 71 is arranged on the side wall of the vacuum filter tank 7, and the suction filter interface 71 is connected with the vacuum pump 8 through a rubber pipe.
The input end of the upper joint 21 is provided with a buffer device 9, as shown in fig. 6, the buffer device comprises a buffer tube 91, an electromagnetic control valve 92, a buffer piston 93 and a bearing spring 94; the buffer tube 91 is of a hollow structure, the buffer tube 91 is vertically and fixedly arranged on the upper joint 31, the bottom end of the buffer tube 91 is communicated with the input end of the upper joint 31, a circulating liquid input port 95 is formed in the middle of the buffer tube 91, the circulating liquid input port 95 is communicated with the connecting pipeline 2, and an L-shaped bearing support rod 96 is arranged at the top of the buffer tube 91; the electromagnetic control valve 92 is arranged on the wall of the buffer tube between the bottom end of the buffer tube 91 and the circulating liquid input port 95, and is used for controlling the input of the circulating liquid of the fountain solution; the buffer piston 93 is disposed in the upper portion of the buffer tube 91, and the outer diameter of the buffer piston 93 is slightly smaller than the inner diameter of the buffer tube 91; one end of the bearing spring 94 is connected with the top of the buffer piston 93, and the other end is connected with the L-shaped cross bar of the bearing strut 96, so as to form bearing for the buffer piston 93.
As shown in fig. 7, the filter element 361 includes two layers of U-shaped shells sleeved inside and outside, wherein the upper end of the inner shell 37 is communicated with the input end 363, an external thread 371 is provided on the outer wall of the neck of the inner shell, an internal thread 381 is correspondingly provided on the inner wall of the port of the outer shell 38, and the outer shell 38 is in threaded connection with the inner shell 37 through the internal thread 381; an annular wall hanging skirt 372 is arranged at the upper part of the outer thread 371 of the inner shell, an annular wall hanging step 335 is arranged on the inner wall of the groove 333 corresponding to the wall hanging skirt, the inner shell 37 and the outer shell 38 are suspended and borne in the groove 333 through the wall hanging skirt 372, and a gap exists between the bottom of the outer shell 38 and the concave bottom of the groove 333; the top cover 362 is in a concave-down groove structure, the concave inner wall of the top cover 362 is sleeved on the outer wall of the upper end port of the inner shell 37 and props against the side of the wall-hanging skirt 372, the concave outer wall of the top cover 362 is provided with an external thread 368, the corresponding position of the groove 333 is provided with an internal thread 336, and the top cover 362 is in threaded connection with the groove 333 through the external thread 368; the inner shell 37 and the outer shell 38 are provided with a plurality of filtering holes 39 on the side walls thereof to form a passage, the inner shell 37 is filled with filtering cotton 373, the outer shell 38 is internally provided with a hollow fiber membrane filtering layer 382, and the filtering cotton 373 is soaked in nano silver solution for drying treatment, so that the filtering cotton soaked with fountain solution is prevented from contacting with air in the using or standing process, and mildew or mould is generated.
The use process of the filtering device is as follows: in the process that the mixed solution flows out of the water tank 1 of the printing machine and is filtered by the filtering tank 33, when a period of time passes and the filtering medium is blocked and the filter element needs to be replaced, firstly, the electromagnetic control valve 92 on the buffer tube 91 is closed to stop the circulating solution, then the filtering tank 33 is rotated to separate the used independent filtering chamber 36 from the upper joint 31 and the lower joint 32, the next group of independent filtering chambers 36 to be used is connected into the upper joint 31 and the lower joint 32 in a proper way, the separation process and the connection process mainly depend on the elastic reset function of the input end 363 and the output end 364 at the upper end and the lower end of the independent filtering chamber 36, the input end 363 and the output end 364 are compressed and slide out along the inner wall of the horn-shaped interface by rotating the horizontal acting force applied, and when the next group of the input end 363 and the output end 364 are sequentially rotated to the horn-shaped interface, the butt joint is realized under the action of a spring to realize the butt joint, the arc-shaped limit through groove 313 on the upper joint 31 and the circular limit groove 321 on the lower joint 32 and the circular ring-shaped limit end 364 are used to limit the movement track of the input end 363 and the output end 364 more stably; after the switching is completed, an electromagnetic control valve 92 on the buffer tube 91 is opened, and a passage is opened to recover the flow circulation of the mixed solution;
the buffer device 9 has the function that when the buffer tube 9 is closed, the mixed solution in the circulation pipeline continues to flow and discharge, the inner wall space at the upper part of the buffer tube 91 is gradually filled, the buffer piston 93 is jacked up, when the buffer piston 93 is jacked up to a certain height, the pressure conversion is realized by the bearing spring 94 at the upper part of the buffer piston 93, the downward resilience force is applied to the buffer piston 93, and the mixed solution in the circulation pipeline is further pressed to continue to flow until the electromagnetic control valve 92 is opened, and the rotation switching of the filter tank 33 can be completed in the period of time;
when the switched independent filter chamber 36 moves out of the upper joint 31, most of the filtrate remains in the independent filter chamber 36, and the output end 364 at the bottom of the independent filter chamber 36 is still communicated with the lower joint 32, at the moment, the vacuum filtration pump 8 is started to perform vacuum filtration on the independent filter chamber 36, the filtrate enters the vacuum filtration tank 7 through the output end 364 and the lower joint 322 on the lower joint 32 and the internal pipeline thereof and flows into the circulation pipeline of the lower stage, and the vacuum filtration process only acts on the empty independent filter chamber due to the fact that the vacuum filtration pump must rely on air circulation, no influence is caused on the independent filter chamber in use, and after the vacuum filtration is completed, the vacuum filtration pump 8 is closed;
the filter layer in the independent filter chamber 36 after the switching is completed should be replaced, firstly unscrewing the top cover 362, releasing the limit of the top cover 362 on the filter element 361, then withdrawing the filter element 361, taking out the filter cotton filter layer 373 in the inner housing 37, then unscrewing the outer housing 38, taking out the hollow fiber membrane filter layer 382 in the outer housing 38, then placing a new hollow fiber membrane filter layer, screwing the outer housing 38 after the filter layer replacement on the outer wall of the inner housing 37, finally placing a new filter cotton filter layer in the inner housing 37, and completing the replacement of the filter element 361; the replaced filter element 361 is inserted into the original filter tank groove 333, and then the top cover 362 is installed and screwed, so that the filter element 361 is fixed, and the reset of the independent filter chamber 36 is completed until the next switching use is performed;
in the design of the inner casing 37 and the outer casing 38, first, a plurality of filtering holes 39 are formed in the side walls of the inner casing 37 and the outer casing 38, and the bottoms of the filtering holes are closed (U-shaped pipe structure) so as to ensure that the filtered liquid is filtered out from the side walls of the casing only and cannot be gathered at the bottom of the casing, so that the filter element is more uniform in use, and the service life and the filtering efficiency are higher; secondly, the filter element 361 is suspended in the groove 333 of the filter tank 33, so that a drainage space and a channel are formed between the filter hole 39 of the filter element 361 and the drainage hole 334 at the bottom of the groove 333, so that the flow of the filtrate is smooth.
The fountain solution circulating system adopts the design of the rotary filter tank and the auxiliary device thereof, realizes the rapid switching of the filter medium, does not influence the recycling of the mixed solution, and has good practical value; the invention carries out water replenishing and cooling mixing treatment on the fountain solution in the circulation process, thereby effectively improving the reuse performance and the use efficiency of the fountain solution.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. The dampening solution compensation circulation system comprises a printing machine water tank matched with a printing machine water bucket groove, and is characterized in that the printing machine water tank is sequentially communicated with a filtering device and a water solution supplementing device through a connecting pipeline by an output interface, and is returned to the other inlet of the printing machine water tank through the output pipeline of the water solution supplementing device, so that a dampening solution circulation pipeline for the printing machine is formed;
the filtering device comprises an upper joint, a lower joint and a filtering tank, wherein the upper joint and the lower joint are respectively and correspondingly fixed on the side wall of a water tank of the printing machine through a bracket, the input end of the upper joint and the output end of the lower joint are respectively and sequentially connected with a connecting pipeline in a circulating pipeline, the center of the lower joint is vertically provided with a vertical shaft, the filtering tank is centrally sleeved on the vertical shaft and can rotate by taking the vertical shaft as an axis, 3 groups of same independent filtering chambers are symmetrically arranged on the filtering tank along the axis, and the top input ends and the bottom output ends of the 3 groups of independent filtering chambers can be respectively in butt joint communication with the upper joint and the lower joint through rotation to form a passage;
the filtering tank is a cylindrical member, a through hole is formed in the center of the filtering tank, and a plurality of ball bearings are arranged in the through hole; the vertical shaft penetrates through the through hole and the ball bearings in the through hole to form interference connection with the filter tank, so that the filter tank has the capability of rotating by taking the vertical shaft as an axis; the top surface of the filtering tank is symmetrically provided with 3 identical vertical downward grooves along the outer edges of the through holes for placing 3 groups of independent filtering chambers, and the bottoms of the grooves are provided with drain holes; the independent filter chamber comprises a filter element, a top cover, an input end and an output end, wherein the filter element is arranged in the groove, the top cover is detachably arranged at the upper part of the groove and is used for fixing the filter element in the groove in an abutting mode, the input end is arranged on the top cover, the bottom end of the input end penetrates through the top cover and stretches into the filter element, the top end of the input end is communicated with the upper joint, the output end is arranged at the lower part of the drain hole, the bottom end of the output end penetrates through the drain hole and stretches into the groove, a soft sealing head is arranged at the bottom end of the output end and is used for sealing and blocking a gap between the drain hole and the output end, and the top end of the output end is communicated with the lower joint;
the water liquid supplementing device comprises a liquid supplementing cavity, a water supplementing tank, a fountain solution supplementing tank, a detecting device and a control device, wherein two ends of the liquid supplementing cavity are respectively communicated with the circulating pipeline, a water supplementing interface and a fountain solution supplementing interface are arranged at the input end of the liquid supplementing cavity, the water supplementing interface is connected with the output end of the water supplementing tank through a rubber pipe, the fountain solution supplementing interface is connected with the output end of the fountain solution supplementing tank through another rubber pipe, and supplementing liquid control valves are arranged at the output ends of the water supplementing tank and the fountain solution supplementing tank; the detection device comprises a floating ball which is arranged in the water tank of the printing machine and can float on the surface of liquid to detect the liquid level of the mixed solution, the control device receives the height information of the floating ball, and the control valve of the replenishing liquid is controlled to be opened when the floating ball is lower than the preset height; a driving pump is arranged on the circulating pipeline between the water liquid supplementing device and the cooling device, and the driving pump pumps the mixed solution flowing through the water liquid supplementing device into the cooling device.
2. The fountain solution compensation circulation system according to claim 1, wherein the top end of the input end is of an umbrella-shaped structure, a jacking spring is sleeved between the top end of the input end and the top cover, and two ends of the jacking spring are fixedly connected with the input end and the top cover respectively, so that the input end has up-and-down elastic resetting capability; the upper joint bottom corresponds to the top of the input end and is provided with a horn-shaped upper interface, the upper interface is located on the rotating running track of the input end, a soft sealing ring is arranged on the inner wall of the upper interface, two sides of the upper interface are provided with arc-shaped limiting through grooves along the rotating running track of the input end, and the width of each arc-shaped limiting through groove is slightly larger than the maximum outer diameter of the top of the input end.
3. The fountain solution compensation circulation system according to claim 2, wherein the top end of the output end is of an umbrella-shaped structure, a downward-pressing spring is sleeved between the top end of the output end and the bottom surface of the filter tank, and two ends of the downward-pressing spring are fixedly connected with the output end and the bottom surface of the filter tank respectively, so that the output end has an up-and-down elastic reset capability; the upper surface of the lower joint takes the vertical shaft as the center, a circular limiting groove is formed in the upper surface of the lower joint, the circular limiting groove coincides with the rotation running track of the output end, 3 identical bell-mouthed lower interfaces are symmetrically formed in the circular limiting groove, which corresponds to the top end of the output end, the 3 lower interfaces coincide with the relative positions of the output ends of the 3 groups of independent filter chambers respectively, 1 lower interface coincides with the upper interface in the vertical position, a soft sealing ring is arranged on the inner wall of the lower interface, the width of the circular limiting groove is slightly larger than the maximum outer diameter of the top end of the output end, and the 3 lower interfaces are communicated with the output end of the lower joint respectively.
4. A fountain solution compensating circulation system according to claim 3, wherein a vacuum filtration tank is arranged between the lower joint output end and the connecting pipeline, two ends of the vacuum filtration tank are respectively communicated with the lower joint output end and the connecting pipeline to form a passage, a filtration interface is arranged on the side wall of the vacuum filtration tank, and the filtration interface is connected with a vacuum pump through a rubber pipe.
5. The fountain solution compensation circulation system of claim 1, wherein the input end of the upper joint is provided with a buffer device, the buffer device comprising a buffer tube, an electromagnetic control valve, a buffer piston and a load-bearing spring; the buffer tube is of a hollow structure, the buffer tube is vertical and fixedly arranged on the upper joint, the bottom end of the buffer tube is communicated with the input end of the upper joint, the middle part of the buffer tube is provided with a circulating liquid input port, the circulating liquid input port is communicated with the connecting pipeline, and the top of the buffer tube is provided with an L-shaped bearing support rod; the electromagnetic control valve is arranged on the wall of the buffer tube between the bottom end of the buffer tube and the circulating liquid input port and is used for controlling the input of the circulating liquid of the fountain solution; the buffer piston is arranged in the upper part of the buffer tube, and the outer diameter of the buffer piston is slightly smaller than the inner diameter of the buffer tube; one end of the bearing spring is connected with the top of the buffer piston, and the other end of the bearing spring is connected with the L-shaped cross rod of the bearing support rod to form bearing for the buffer piston.
6. The fountain solution compensation circulation system according to claim 1, wherein the filter element comprises a two-layer U-shaped shell sleeved outside the filter element, wherein the upper end of the inner shell is communicated with the input end, an external thread is arranged on the outer wall of the neck of the inner shell, an internal thread is correspondingly arranged on the inner wall of the port of the outer shell, and the outer shell is in threaded connection with the inner shell through the internal thread; the upper part of the external thread of the inner shell is provided with an annular wall-hanging skirt, the inner wall of the groove is provided with an annular wall-hanging step corresponding to the wall-hanging skirt, the inner shell and the outer shell are suspended and bear in the groove through the wall-hanging skirt, and a gap exists between the bottom of the outer shell and the concave bottom of the groove; the top cover is of a concave-surface downward groove-shaped structure, the concave inner wall of the top cover is sleeved on the outer wall of the port at the upper end of the inner shell and props against the wall-hanging skirt, an external thread is arranged on the concave outer wall of the top cover, an internal thread is arranged at the corresponding position of the groove, and the top cover is in threaded connection with the groove through the external thread; a plurality of filtering holes are formed in the side walls of the inner shell and the outer shell so as to form a passage, filter cotton is filled in the inner shell, a hollow fiber membrane filter layer is arranged in the outer shell, and the filter cotton is soaked in nano silver solution and dried.
7. The fountain solution compensation circulation system of claim 6, wherein said detecting means further comprises a conductivity sensor for detecting and signaling a conductivity value of the mixed solution in the printer tank, and wherein said control means receives the signal from said conductivity sensor and controls said fountain solution control valve to open when the detected conductivity value is below a preset value.
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| CN201810663339.8A CN108635954B (en) | 2018-06-25 | 2018-06-25 | Fountain solution compensation circulation system |
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