CN108819453B

CN108819453B - Fountain solution circulating treatment system based on filtering and fluid infusion

Info

Publication number: CN108819453B
Application number: CN201810664430.1A
Authority: CN
Inventors: 黄建成
Original assignee: Anhui Viboo Print Technology Co ltd
Current assignee: Anhui Viboo Print Technology Co ltd
Priority date: 2018-06-25
Filing date: 2018-06-25
Publication date: 2021-02-02
Anticipated expiration: 2038-06-25
Also published as: CN108819453A

Abstract

The invention discloses a fountain solution circulating treatment system based on filtration and liquid supplementation, which comprises a printer water tank, wherein the printer water tank is sequentially communicated with a filtration device and a water liquid supplementation device through an output interface and a connecting pipeline, and is returned to the other access port of the printer water tank through the output pipeline of the water liquid supplementation device, so that a circulating pipeline is formed; the filter equipment includes top connection, lower clutch and crosses the jar, and top connection and lower clutch correspond respectively through the support and fix on the lateral wall of printing machine water tank, and the input of top connection and the output of lower clutch are connected with connecting tube respectively, and a horizontal spout has been seted up to top connection center and lower clutch center correspondence respectively, cross the jar and set up in horizontal spout and can reciprocate to slide, cross the jar and go up the symmetry and be provided with 2 groups the same independent filter chamber, the top input of 2 groups of independent filter chambers and bottom output accessible reciprocate to slide respectively with top connection and lower clutch butt joint intercommunication, form the route.

Description

Fountain solution circulating treatment system based on filtering and fluid infusion

Technical Field

The invention relates to the technical field of printing processing equipment, in particular to a fountain solution circulating processing system based on filtering and liquid replenishing.

Background

The effective utilization problem of fountain solution is always the problem to be solved urgently in the industry, the prior technical scheme is mainly that the primary filtration is carried out, then the fine filtration is carried out, finally the fountain solution is added into a water tank, the detection of each index is carried out in the water tank, and according to the detection result, various buffering agents or new substances such as fountain solution, alcohol, water and the like are added into the water tank so as to reach the use standard of the fountain solution. Therefore, the prior art has some defects which are mainly shown in the following steps:

1. in the fountain solution circulating filtration process, the filter medium can only be cleared away through modes such as back flush when blocking, and can not be switched in time, thereby realizing the change without stopping the machine, leading the filtration efficiency to be lower and lower, and finally leading the water tank to be pumped out and overflowing easily when the filter medium blocks, damaging equipment and wasting resources.

2. All index detection and buffer liquid addition are in same water tank, can cause solution mixing inhomogeneous or high temperature scheduling problem, and the detection error phenomenon appears.

Disclosure of Invention

Aiming at the defects of the prior art, the invention 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 circulation processing system based on filtration and fluid infusion comprises a printer water tank matched with a printer water bucket groove, wherein the printer water tank is sequentially communicated with a filtration device and a water fluid supplement device through an output interface through a connecting pipeline and is returned to the other access port of the printer water tank through the output pipeline of the water fluid supplement device, so that a fountain solution circulation pipeline for a printer is formed; wherein, filter equipment includes top connection, lower clutch and crosses the filter tank, the top connection with the lower clutch corresponds respectively through the support and fixes on the lateral wall of printing machine water tank, the input of top connection with the output of lower clutch is connected according to the order with the connecting tube in the circulating line respectively, the top connection center with the lower clutch center corresponds respectively and has seted up a horizontal spout, cross the filter tank set up in just can follow in the horizontal spout direction is reciprocal to be slided, it is provided with 2 groups the same independent filter chamber to cross the symmetry on the filter tank, top input and the bottom output accessible reciprocal slide of 2 groups of independent filter chamber respectively with top connection and lower clutch butt joint intercommunication form the route. The system realizes the rapid switching of the filter medium through the reciprocating sliding butt joint mode of the filter tanks, and enables various technical indexes of the mixed solution to meet the use requirements through the water liquid supplementing device.

Preferably, the filter tank is a cuboid component, sliding tables matched with the transverse sliding grooves are respectively arranged at the upper end and the lower end of the filter tank, 2 identical vertically downward grooves are symmetrically formed in the top surface of the filter tank along the central line and used for placing 2 groups of independent filter chambers, and a liquid discharge hole is formed in the bottom of each groove; 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 will the filter core butt is fixed in the recess, the input end sets up on the top cap, the bottom of input end is passed 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 outage, the bottom of output end is passed the outage stretches into in the recess, the bottom of output end is provided with soft sealing head, be used for with the sealed jam in space between outage and the output end, the top of output end with the lower clutch intercommunication.

Preferably, 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 upper interface that the horn mouth shape was seted up on the top of input end, upper interface is located on the reciprocal orbit of sliding of input end, be provided with soft sealing ring on the upper interface inner wall, upper interface both sides are followed the reciprocal orbit of input end has seted up spacing logical groove, the width that spacing logical groove slightly is greater than the maximum external diameter on input end top.

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 the up-and-down elastic resetting capability; set up spacing recess in the horizontal spout of lower clutch upper surface, spacing recess with the coincidence of the reciprocating motion orbit of output end, correspond to on the spacing recess 3 the same lower interface of horn mouth shape is seted up to the top symmetry of output end, 3 individual lower interface respectively with the relative position coincidence of the output end of 2 independent filter chambers of group, wherein, the lower interface in the centre among 3 individual lower interfaces with the upper interface coincides on vertical position, be provided with soft sealing ring on the lower interface inner wall, the width of spacing recess slightly is greater than the maximum external diameter on output end top, 2 individual lower interfaces respectively with the output intercommunication of lower clutch.

Optimized, the lower clutch output with be provided with the vacuum filtration jar between the connecting tube, vacuum filtration jar both ends respectively with the lower clutch output with the connecting tube intercommunication forms the route, be provided with the suction filtration interface on the lateral wall of vacuum filtration jar, the suction filtration interface passes through the rubber tube and is connected with vacuum pump.

Preferably, 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 vertically 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 inlet and is used for controlling the input of the fountain solution circulating liquid; 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 bear the buffer piston.

Preferably, the filter element comprises two layers of U-shaped shells sleeved inside and outside, wherein the upper end of the inner shell is communicated with the input end, the outer wall of the neck of the inner shell is provided with an external thread, the inner wall of the port of the outer shell is correspondingly provided with an internal thread, and the outer shell is in threaded connection with the inner shell through the internal thread; an annular wall-hanging skirt edge is arranged at the upper part of the external thread of the inner shell, an annular wall-hanging step is arranged on the inner wall of the groove corresponding to the wall-hanging skirt edge, the inner shell and the outer shell are suspended and carried in the groove through the wall-hanging skirt edge, and a gap is formed between the bottom of the outer shell and the concave bottom of the groove; the top cover is of a groove-shaped structure with a downward concave surface, the inner wall of the concave surface of the top cover is sleeved on the outer wall of the upper end port of the inner shell and abuts against the wall hanging skirt edge, external threads are arranged on the outer wall of the concave surface of the top cover, internal threads are arranged at the corresponding position of the groove, and the top cover is in threaded connection with the groove through the external threads; all seted up a plurality of filtration holes on interior casing and the outer casing lateral wall to form the route, interior intussuseption of casing is filled with the filter pulp, be provided with hollow fiber membrane filter layer in the shell body, the filter pulp soaks dry process through nano silver solution to prevent to soak the filter pulp that has the fountain solution and contact with the air in the use or the in-process of stewing, generate mildew or mould.

The use process of the filter device is as follows: when the mixed solution flows out of the water tank of the printing machine and is filtered by the filter tank, when more impurities are filtered after a period of time, the filter medium is blocked and the filter element needs to be replaced, the electromagnetic control valve on the buffer tube is closed firstly, the circulating liquid is suspended, then the filter tank is pushed transversely, the independent filter chamber in use is separated from the upper joint and the lower joint, and the next group of independent filter chamber to be used is connected into the upper joint and the lower joint along the trend, the separation process and the connection process mainly depend on the elastic reset function of the input end and the output end at the upper end and the lower end of the independent filter chamber, the input end and the output end are compressed and slide out along the inner wall of the horn-shaped interface by transversely pushing the applied horizontal acting force, and the next group of the input end and the output end slide to the horn-shaped interface in a reciprocating mode, the connector is pushed under the action of the spring to realize butt joint and complete switching, and the limiting through groove on the upper connector and the limiting groove on the lower connector are used for limiting the moving tracks of the input end and the output end, so that the reciprocating process is more accurate and stable; after the switching is finished, opening an electromagnetic control valve on the buffer tube, and opening a passage to recover the flow circulation of the mixed solution;

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 inner wall space at the upper part of the buffer tube is gradually filled, the buffer piston is jacked upwards, when the buffer tube is jacked to a certain height, the bearing spring at the upper part of the buffer piston realizes pressure conversion, downward resilience force is applied to the buffer piston, further, the mixed solution in the circulating pipeline is pressed to continue to flow until the electromagnetic control valve is opened, and in the time period, the transverse pushing switching of the filter tank can be completed;

when the switched independent filter chamber is moved out of the upper connector, most of filtrate is still remained in the independent filter chamber, an output end head at the bottom of the independent filter chamber is still communicated with the lower connector, at the moment, the vacuum suction filtration pump is started to carry out vacuum suction filtration on the independent filter chamber, the filtrate enters the vacuum suction filtration tank through the output end head, a lower connector on the lower connector and an internal pipeline of the independent filter chamber and flows into a circulation pipeline at the lower stage, because the vacuum suction filtration pump is dependent on air circulation, the vacuum suction filtration process only acts on the empty independent filter chamber, no influence is generated on the independent filter chamber in use, and after the suction filtration is finished, the vacuum suction filtration pump is closed;

the filter layer in the independent filter chamber after the switching is finished is replaced, the top cover is unscrewed at first, the limitation of the top cover on the filter element is removed, then the filter element is drawn out, the filter cotton filter layer in the inner shell is taken out, then 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 placed in, the outer shell after the filter layer is replaced is screwed in the outer wall of the inner shell, and finally the new filter cotton filter layer is placed in the inner shell, so that the filter element is replaced; inserting the replaced filter element into the groove of the original filter tank, installing and screwing the top cover to fix the filter element, thereby completing the replacement of the independent filter chamber until the next switching use is finished;

in the design of the inner shell and the outer shell, firstly, 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 tube structures), so that filtered liquid is only filtered out from the side walls of the shell and cannot be gathered at the bottom of the shell, the filter element is more uniformly used, and the service life and the filtering efficiency are higher; and secondly, the filter element is arranged in the groove of the filter tank in a suspended manner, so that a liquid discharge space and a channel are formed between the filter hole of the filter element and the liquid discharge hole at the bottom of the groove, and the filtrate flows smoothly.

Preferably, the water liquid supplementing device comprises a liquid supplementing cavity, a water supplementing tank, a fountain solution supplementing tank, a detection device and a control device, two ends of the liquid supplementing cavity are respectively communicated with the circulating pipeline, the input end of the liquid supplementing cavity is provided with a water supplementing interface and a fountain solution supplementing interface, the water supplementing interface is connected with the output end of the water supplementing tank through a rubber tube, the fountain solution supplementing interface is connected with the output end of the fountain solution supplementing tank through another rubber tube, and the output ends of the water supplementing tank and the fountain solution supplementing tank are both provided with supplementing liquid control valves; 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 the liquid to detect the height of the liquid level of the mixed solution, the control device receives the height information of the floating ball and controls the supplementary liquid control valve to open when the floating ball is lower than a preset height; and 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 a signal, the control device receives the signal sent by the conductivity sensor, and the control device controls the replenishment liquid control valve to be opened when the measured conductivity value is lower than a preset value.

The invention has the advantages that: the invention adopts the design of the return type filter tank and the auxiliary devices thereof, realizes the rapid switching of the filter medium, does not influence the recycling of the mixed solution, and has excellent practical value; the invention carries out water liquid supplement and cooling mixing treatment on the fountain solution in the circulating process, and effectively improves the reusability and the use efficiency of the fountain solution.

Drawings

FIG. 1 is a schematic diagram showing the overall layout of a fountain solution recycling system based on return-type filter switching according to an embodiment;

FIG. 2 is a schematic diagram of the internal structure of the cooling device in the embodiment;

FIG. 3 is a schematic view showing the overall structure of the filtration apparatus in the embodiment;

FIG. 4 is a plan view of a lower joint of the filter device in the embodiment;

FIG. 5 is a schematic side view of the filter device in the embodiment;

FIG. 6 is a schematic view 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 in the embodiment.

Detailed Description

The present invention is described in detail below with reference to the attached drawings.

As shown in fig. 1, a fountain solution circulation processing system based on return type filtering switching comprises a printing machine water tank 1 matched with a printing machine water bucket tank, wherein the printing machine water tank 1 is sequentially communicated with a filtering device 3, a water liquid supplementing device 4 and a cooling device 5 through an output interface via a connecting pipeline 2, and is returned to the other access port of the printing machine water tank 1 through an output pipeline of the cooling device 5, so that a fountain solution circulation pipeline for a printing machine is formed; wherein, filter equipment 3 includes top connection 31, lower clutch 32 and filter tank 33, top connection 31 with lower clutch 32 corresponds respectively through support 34 and fixes on the lateral wall of printing machine water tank 1, top connection 31's input with lower clutch 32's output is connected according to the order with connecting tube 2 in the circulating line respectively, top connection 31 center with lower clutch 32 center corresponds respectively has seted up a horizontal spout 35, filter tank 33 set up in just can follow in the horizontal spout 35 the reciprocal sliding of horizontal spout 35 direction, filter tank 33 goes up the symmetry and is provided with 2 the same independent filter chambers 36 of group, 2 the top input of the independent filter chamber 36 of group and bottom output accessible reciprocal sliding respectively with top connection 31 and lower clutch 32 butt joint intercommunication form the route.

The water liquid supplementing device 4 comprises a liquid supplementing cavity 41, a water supplementing tank 42, a fountain solution supplementing tank 43, a detection device 44 and a control device 45, wherein two ends of the liquid supplementing cavity 41 are respectively communicated with the circulating pipeline, the input end of the liquid supplementing cavity 41 is provided with a water supplementing interface 411 and a fountain solution supplementing interface 412, the water supplementing interface 411 is connected with the output end of the water supplementing tank 42 through a rubber pipe, the fountain solution supplementing interface 412 is connected with the output end of the fountain solution supplementing tank 43 through another rubber pipe, and the output ends of the water supplementing tank 42 and the fountain solution supplementing tank 43 are both provided with a supplementing liquid control valve 46; the detection device 44 comprises a floating ball 441 which is arranged in the printer water tank 1 and can float on the surface of the liquid to detect the height of the liquid level of the mixed solution, and a conductivity sensor 442 for detecting the conductivity value of the mixed solution in the printer water tank 1 and sending a signal, the control device 45 receives the signal sent by the conductivity sensor 442, and when the detected conductivity value is lower than a preset value, the control device controls the supplementary liquid control valve 46 to open; 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 fountain solution and water; and 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 and temperature lowering device 5 includes a liquid returning cavity 51 and a circulating condensate pipe 52, two ends of the liquid returning cavity 51 are respectively communicated with the circulating pipeline, a spiral diversion trench 53 is disposed in the liquid returning cavity 51, and an input port and an output port of the liquid returning cavity 51 are both extended outwards along the spiral diversion trench 53; the circulating condensate pipe 52 is arranged on the outer wall of the liquid return cavity 51, the circulating condensate 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 purpose of the extension design of the spiral diversion trench 53 in the liquid return cavity 51 and the ports at the two ends of the liquid return cavity 51 is to enable the mixed solution flowing through the spiral diversion trench 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 rectangular parallelepiped member, the upper and lower ends of the filter tank 33 are respectively provided with a sliding table 331 matching with the transverse sliding table, 2 identical vertical downward grooves 333 are symmetrically formed on the top surface of the filter tank 33 along the central line for placing 2 groups of independent filter chambers 36, and the bottom of the groove 333 is provided with a drain hole 334; the independent filter chamber 36 includes a filter element 361, a top cover 362, an input end 363 and an output end 364, the filter element 361 is arranged in the groove 333, the top cover 362 is detachably arranged on the upper part of the groove 333 and abuts against and fixes the filter element 361 in the groove 333, 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 to extend 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 liquid discharge hole 334, the bottom end of the output tip 364 extends through the drain hole 334 and into the recess 333, the bottom end of the output head 364 is provided with a soft sealing head 365 for sealing and blocking the gap between the drain hole 334 and the output head 364, and the top end of the output head 364 is communicated with the lower joint.

The top end of the input end 363 is of 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 elastic resetting capability from top to bottom; the bottom of the upper joint 31 corresponding to the top end of the input end 363 is provided with a flared upper interface 311, the upper interface 311 is located on the reciprocating sliding track of the input end 363, the inner wall of the upper interface 311 is provided with a flexible sealing ring 312, two sides of the upper interface 311 are provided with limiting through grooves 313 along the reciprocating sliding track of the input end 363, and the width of the 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 head 364 is in an umbrella-shaped structure, a downward pressing spring 367 is sleeved between the top end of the output end head 364 and the bottom surface of the filter tank 33, and two ends of the downward pressing spring 367 are respectively fixedly connected with the output end head 364 and the bottom surface of the filter tank 33, so that the output end head 364 has the up-and-down elastic resetting capability; a limiting groove 321 is formed in the transverse sliding groove 35 on the upper surface of the lower joint 32, the limiting groove 321 coincides with the reciprocating movement track of the

output end head

364, 3 identical lower interfaces 322 in a bell mouth shape are symmetrically formed on the limiting groove 321 corresponding to the top end of the output end head 364, the 3 lower interfaces 322 coincide with the relative positions of the output end heads 364 of the 2 groups of independent filter chambers 36, respectively, wherein the middle lower interface of the 3 lower interfaces 322 coincides with the upper interface at the vertical position; the inner wall of the lower interface 322 is provided with a flexible sealing ring 323, the width of the limiting groove 321 is slightly larger than the maximum outer diameter of the top end of the output head 364, and the 2 lower interfaces 322 are respectively communicated with the output end of the lower joint 32.

The vacuum filtration tank 7 is arranged between the output end of the lower joint 32 and the connecting pipeline 2, two ends of the vacuum filtration tank 7 are respectively communicated with the output end of the lower joint 32 and the connecting pipeline 2 to form a passage, a suction filtration interface 71 is arranged on the side wall of the vacuum filtration tank 7, and the suction filtration interface 71 is connected with the vacuum pump 8 through a rubber tube.

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, the middle part of the buffer tube 91 is provided with a circulating liquid input port 95, the circulating liquid input port 95 is communicated with the connecting pipeline 2, and the top of the buffer tube 91 is provided with an L-shaped bearing support rod 96; 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 inlet 95 and is used for controlling the input of fountain solution circulating liquid; the buffer piston 93 is disposed within an upper portion of the buffer tube 91, the buffer piston 93 having an outer diameter slightly smaller than an 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 of the bearing spring is connected with the L-shaped cross rod of the bearing support rod 96 to bear 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, the outer wall of the neck of the inner shell is provided with an external thread 371, the inner wall of the port of the outer shell 38 is correspondingly provided with an internal thread 381, 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 carried in the groove 333 through the wall hanging skirt 372, and a gap is formed between the bottom of the outer shell 38 and the concave bottom of the groove 333; the top cover 362 is of a groove-shaped structure with a downward concave surface, the inner wall of the concave surface of the top cover 362 is sleeved on the outer wall of the upper end port of the inner shell 37 and abuts against the edge of the wall hanging skirt 372, the outer wall of the concave surface 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 side walls of the inner shell 37 and the outer shell 38 are respectively provided with a plurality of filtering holes 39 to form a passage, the inner shell 37 is filled with filter cotton 373, the outer shell 38 is internally provided with a hollow fiber membrane filtering layer 382, and the filter cotton 373 is soaked in nano-silver solution and dried, so that the filter cotton soaked with fountain solution is prevented from contacting with air in the using or standing process to generate mildew or mould.

The use process of the filter device is as follows: in the process that the mixed solution flows out from the printer water tank 1 and is filtered by the filter tank 33, when more impurities are filtered after a period of time and the filter medium is blocked and a filter element needs to be replaced, firstly, the electromagnetic control valve 92 on the buffer tube 91 is closed, the circulating liquid is stopped, then the filter tank 33 is pushed transversely, the independent filter chamber 36 in use is separated from the upper joint 31 and the lower joint 32, and the next group of independent filter chambers 36 to be used are connected into the upper joint 31 and the lower joint 32, 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 filter chamber 36, the horizontal acting force exerted by reciprocating sliding enables the input end 363 and the output end 364 to be compressed and slide out along the inner wall of the horn-shaped joint, and when the input end 363 and the output end 364 of the next group slide to the horn-shaped joint in turn, the interfaces are pushed under the action of the spring to realize butt joint and complete switching, and the limiting through groove 313 on the upper joint 31 and the limiting groove 321 on the lower joint 32 are used for limiting the moving tracks of the input end 363 and the output end 364, so that the reciprocating sliding process is more accurate and stable; after the switching is completed, opening the electromagnetic control valve 92 on the buffer tube 91, and opening the passage to recover the flow circulation of the mixed solution;

the buffer device 9 is used for continuously discharging the mixed solution in the circulation pipeline in a flowing manner when the buffer tube 9 is closed, gradually filling the inner wall space at the upper part of the buffer tube 91, jacking up the buffer piston 93, and when the buffer piston 93 is jacked to a certain height, the bearing spring 94 at the upper part of the buffer piston 93 realizes pressure conversion, applies downward resilience to the buffer piston 93, and further suppresses the continuous flowing of the mixed solution in the circulation pipeline until the electromagnetic control valve 92 is opened, so that the transverse pushing switching of the filter tank 33 can be completed in the time period;

when the switched independent filter chamber 36 is moved out of the upper connector 31, most of the filtrate remains in the independent filter chamber 36, and the output end head 364 at the bottom of the independent filter chamber is still communicated with the lower connector 32, at this time, the vacuum suction pump 8 is started to perform vacuum suction filtration on the independent filter chamber 36, the filtrate enters the vacuum suction tank 7 through the output end head 364, the lower connector 322 on the lower connector 32 and the internal pipeline thereof and flows into the circulation pipeline at the lower stage, because the vacuum suction pump must depend on air circulation, the vacuum suction filtration process only acts on the empty independent filter chamber, no influence is generated on the independent filter chamber in use, and after the suction filtration is completed, the vacuum suction pump 8 is closed;

the filter layer inside the independent filter chamber 36 after the switching is completed should be replaced, the top cover 362 is unscrewed at first, the limitation of the top cover 362 on the filter element 361 is removed, then the filter element 361 is drawn out, the filter cotton filter layer 373 in the inner shell 37 is taken out, then the outer shell 38 is unscrewed, the hollow fiber membrane filter layer 382 in the outer shell 38 is taken out, then a new hollow fiber membrane filter layer is placed, the outer shell 38 with the filter layer replaced is screwed into the outer wall of the inner shell 37, and finally a new filter cotton filter layer is placed in the inner shell 37, so that the replacement of the filter element 361 is completed; inserting the replaced filter element 361 into the original filter tank groove 333, installing and screwing the top cover 362, and fixing the filter element 361, thereby completing the resetting of the independent filter chamber 36 until the next switching use;

in the design of the inner shell 37 and the outer shell 38, firstly, the side walls of the inner shell 37 and the outer shell 38 are both provided with a plurality of filtering holes 39, and the bottoms of the filtering holes are closed (U-shaped tube structure) so as to ensure that filtering liquid is only filtered out from the side walls of the shell and cannot be gathered at the bottom of the shell, so that the filter element is more uniform in use, and the service life and the filtering efficiency are higher; and then 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, and the filtrate flows smoothly.

The fountain solution circulating system adopts the design of the return type filter tank and the auxiliary devices thereof, realizes the quick switching of the filter medium, does not influence the cyclic utilization of the mixed solution, and has excellent practical value; the invention carries out water liquid supplement and cooling mixing treatment on the fountain solution in the circulating process, and effectively improves the reusability and the use efficiency of the fountain solution.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A fountain solution circulation processing system based on filtration and fluid infusion 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 filter device and a water fluid supplementing device through an output interface and a connecting pipeline, and is returned to the other access port of the printing machine water tank through the output pipeline of the water fluid supplementing device, so that a fountain solution circulation pipeline for a 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 the water tank of the printing machine through a support, 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 upper joint and the center of the lower joint are respectively and correspondingly provided with a transverse chute, the filtering tank is arranged in the transverse chute and can slide in a reciprocating manner along the direction of the transverse chute, 2 groups of identical independent filtering chambers are symmetrically arranged on the filtering tank, and the top input ends and the bottom output ends of the 2 groups of independent filtering chambers can be respectively in butt joint communication with the upper joint and the lower joint through reciprocating sliding to form a passage; a limiting groove is formed in a transverse sliding groove in the upper surface of the lower connector, the limiting groove is overlapped with the reciprocating movement track of the output end, 3 identical horn-mouth-shaped lower interfaces are symmetrically formed in the limiting groove corresponding to the top end of the output end, the 3 lower interfaces are respectively overlapped with the relative positions of the output ends of the 2 groups of independent filter chambers, each independent filter chamber comprises a filter element, a top cover, an input end and an output end, a horn-mouth-shaped upper interface is formed in the bottom of the upper connector corresponding to the top end of the input end, the upper interface is located on the reciprocating sliding movement track of the input end, and the middle lower interface in the 3 lower interfaces is overlapped with the upper interface in the vertical position; the filter tank is a cuboid component, sliding tables matched with the transverse sliding grooves are respectively arranged at the upper end and the lower end of the filter tank, 2 identical vertical downward grooves are symmetrically formed in the top surface of the filter tank along the central line and used for placing 2 groups of independent filter chambers, and a liquid discharge hole is formed in the bottom of each groove; the filter element is arranged in the groove, the top cover is detachably arranged at the upper part of the groove and used for abutting and fixing the filter element in the groove, the input end is arranged on the top cover, the bottom end of the input end penetrates through the top cover and extends into the filter element, the top end of the input end is communicated with the upper connector, the output end is arranged at the lower part of the liquid discharge hole, the bottom end of the output end penetrates through the liquid discharge hole and extends into the groove, the bottom end of the output end is provided with a soft sealing head used for sealing and blocking a gap between the liquid discharge hole and the output end, and the top end of the output end is communicated with the lower connector; a vacuum pumping and filtering tank is arranged between the output end of the lower connector and the connecting pipeline, two ends of the vacuum pumping and filtering tank are respectively communicated with the output end of the lower connector and the connecting pipeline to form a passage, a pumping and filtering interface is arranged on the side wall of the vacuum pumping and filtering tank, and the pumping and filtering interface is connected with a vacuum pump through a rubber tube; 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 vertically 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 inlet and is used for controlling the input of the fountain solution circulating liquid; 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 bear the buffer piston.

2. The fountain solution circulation processing system based on filtration and fluid infusion as claimed in claim 1, wherein the top end of the input end is umbrella-shaped, 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 respectively and fixedly connected with the input end and the top cover, so that the input end has elastic reset capability from top to bottom; the flexible sealing ring is arranged on the inner wall of the upper interface, limiting through grooves are formed in the two sides of the upper interface along the reciprocating movement track of the input end, and the width of each limiting through groove is slightly larger than the maximum outer diameter of the top end of the input end.

3. The fountain solution circulation processing system based on filtration and fluid replacement as claimed in claim 1 or 2, wherein the top end of the output end head is of an umbrella structure, a downward pressing spring is sleeved between the top end of the output end head and the bottom surface of the filter tank, and two ends of the downward pressing spring are respectively and fixedly connected with the output end head and the bottom surface of the filter tank, so that the output end head has up-and-down elastic resetting capability; the inner wall of the lower connector is provided with a flexible sealing ring, the width of the limiting groove is slightly larger than the maximum outer diameter of the top end of the output end head, and the 2 lower connectors are respectively communicated with the output end of the lower connector.

4. The fountain solution circulation treatment system based on filtration and fluid infusion as claimed in claim 1, wherein the filter element comprises two layers of U-shaped shells which are sleeved inside and outside, wherein the upper end of the inner shell is communicated with the input end, the outer wall of the neck part of the inner shell is provided with external threads, the inner wall of the port of the outer shell is correspondingly provided with internal threads, and the outer shell is in threaded connection with the inner shell through the internal threads; an annular wall-hanging skirt edge is arranged at the upper part of the external thread of the inner shell, an annular wall-hanging step is arranged on the inner wall of the groove corresponding to the wall-hanging skirt edge, the inner shell and the outer shell are suspended and carried in the groove through the wall-hanging skirt edge, and a gap is formed between the bottom of the outer shell and the concave bottom of the groove; the top cover is of a groove-shaped structure with a downward concave surface, the inner wall of the concave surface of the top cover is sleeved on the outer wall of the upper end port of the inner shell and abuts against the wall hanging skirt edge, external threads are arranged on the outer wall of the concave surface of the top cover, internal threads are arranged at the corresponding position of the groove, and the top cover is in threaded connection with the groove through the external threads; the filter comprises an inner shell and an outer shell, wherein the inner shell is internally provided with a hollow fiber membrane filter layer, the inner shell is internally provided with a plurality of filter holes, the inner shell is internally provided with a passage, and the filter cotton is soaked and dried by a nano silver solution.

5. The system of claim 1, wherein the water replenishing device comprises a replenishing cavity, a water replenishing tank, a fountain solution replenishing tank, a detection device and a control device, two ends of the replenishing cavity are respectively communicated with the circulation pipeline, an input end of the replenishing cavity is provided with a water replenishing interface and a fountain solution replenishing interface, the water replenishing interface is connected with an output end of the water replenishing tank through a rubber tube, the fountain solution replenishing interface is connected with an output end of the fountain solution replenishing tank through another rubber tube, and output ends of the water replenishing tank and the fountain solution replenishing tank are respectively provided with a replenishing control valve; 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 the liquid to detect the height of the liquid level of the mixed solution, the control device receives the height information of the floating ball and controls the supplementary liquid control valve to open when the floating ball is lower than a preset height; and 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.

6. The system of claim 5, wherein the detecting means further comprises a conductivity sensor for detecting a conductivity value of the mixed solution in the water tank of the printing press and sending a signal, the control means receives the signal from the conductivity sensor, and the replenishment liquid control valve is controlled to open when the detected conductivity value is lower than a predetermined value.