CN104275937A - Overflowing protection device for working ink box and circulating ink supply system - Google Patents
Overflowing protection device for working ink box and circulating ink supply system Download PDFInfo
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- CN104275937A CN104275937A CN201310282473.0A CN201310282473A CN104275937A CN 104275937 A CN104275937 A CN 104275937A CN 201310282473 A CN201310282473 A CN 201310282473A CN 104275937 A CN104275937 A CN 104275937A
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Abstract
The invention discloses an overflowing protection device for a working ink box and a circulating ink supply system. The overflowing protection device comprises at least one ink overflowing ink box and a power unit. When ink in the working ink box overflows, the ink flows to the ink overflowing ink box through an ink path channel between the working ink box and the ink overflowing ink box; the input end of the power unit is connected with the ink overflowing ink box and used for discharging the ink in the ink overflowing ink box. The overflowing protection device discharges the ink in the ink overflowing ink box out of the ink overflowing ink box quickly, the purpose of quickly protecting the working ink box is achieved, various problems caused by ink overflowing of the working ink box are avoided, the whole circulating ink supply system can be protected effectively, for example, it is avoided that the overflowed ink enters a gas path of the whole circulating ink supply system, components in the gas path are protected, and corrosion of the overflowed ink to the whole circulating ink supply system is avoided.
Description
Technical field
The invention belongs to the technical field that fluid flowing controls, be specifically related to a kind of excess flow protection device and cyclic ink supply system of work print cartridge.
Background technology
Current ink jet-print head mainly contains gravity ink supply and cyclic ink supply two kinds of modes, and these two kinds of modes use according to the actual demand of ink jet-print head, and some ink jet-print head uses gravity ink supply mode, and some ink jet-print head uses cyclic ink supply mode.In ink-jet printing technology field, in ink-jet printer, usually adopt the ink jet-print head of the series flow needing cyclic ink supply system to support.Utilize the circulation of ink in ink jet-print head, the impurity in ink jet-print head and bubble etc. can be taken away, prevent its blocking ink jet-print head or impact from printing with this, can also promote that thermal cycle ensures the stable of ink viscosity simultaneously.
As shown in Figure 1, prior art provides a kind of cyclic ink supply system of crossfire work, this cyclic ink supply system comprises main black bucket 101, ink feed print cartridge 105, return print cartridge 106, degas module 103, ink jet-print head 107, the ink outlet port of main black bucket 101 is pump orifice, the pump orifice of main black bucket 101 is connected with the ink entrance of pump 102, the ink outlet port of pump 102 is connected with the ink entrance of degas module 103, the ink outlet port of degas module 103 is connected with the ink entrance of ink feed print cartridge 105, the ink outlet port of ink feed print cartridge 105 is connected with the ink entrance of ink jet-print head 107, the Mo Kou that returns of ink jet-print head 107 is connected with the ink entrance returning print cartridge 106, the black mouth that returns returning print cartridge 106 is connected with the ink entrance of main black bucket 101.Meanwhile, this cyclic ink supply system also comprises an ink supply bucket 104, and ink supply bucket 104 is for the ink supply of main black bucket 101.Main black bucket 101 is connected with negative pressure generating device, is a subnormal ambient inside main black bucket 101, and negative pressure is comparatively large, ink can be drawn into main black bucket 101 from ink supply bucket 104 by this negative pressure.Between ink supply bucket 104 and main black bucket 101, be provided with a black valve, when main black bucket 101 liquid level is low, opened by black valve, the ink in ink supply bucket 104 is just inhaled into 101 li, main black bucket; When the liquid level of the ink of main 101 li, black bucket reaches requirement, close black valve, such ink just stops having sucked.But sometimes this black valve is due to some faults, can not close tight completely, even if cause this black valve in a closed condition, main black bucket 101, also at blotting, so just causes the liquid level of the ink in main black bucket 101 too high, thus ink overflow phenomenon occurs.
During cyclic ink supply system worked well, ink is pressed in ink feed print cartridge 105 by pump 102, and in the way of pump ink, degas module 103 pairs of inks carry out degasification.Ink flows back to back print cartridge 106 by the swabbing action of returning print cartridge 106 applying negative pressure after ink feed print cartridge 105 flow-through inkjet print 107, is applied to ink feed print cartridge 105 adjusts the flow velocity of ink in ink jet-print head 107 and the point pressure of ink jet-print head 107 with the pressure returned in print cartridge 106 by adjustment.After ink flow into back print cartridge 106, flow back in main black bucket 101 by the swabbing action of the main black bucket 101 applying negative pressure.In cyclic ink supply system work process, all can cause ink overflow phenomenon owing to being subject to ink gasification, the impact of system vibrations or the reason such as the system failure.
But owing to employing gas pressure in a large number, loop control is carried out to whole cyclic ink supply system in prior art, so there is a large amount of gas circuits in whole cyclic ink supply system, but ink is often because the system failure enters in gas circuit, thus cause the gas circuit device failure in gas circuit, ink is caused to outflow, UV ink (i.e. ultraviolet light solidified ink) has very strong corrosivity, can cause catastrophic effect to whole cyclic ink supply system.Generally in order to the method protecting gas circuit usually to use increases Dewar bottle in gas circuit, but this method unreliable, automatically cannot protect, need people and guard constantly.The effect of Dewar bottle is mounted in gas circuit pipeline, if when there is ink overflow, ink can first flow in Dewar bottle, has ink to judge whether ink overflow by observing in Dewar bottle, but if nobody look at, ink can overflow outward always, continues ink overflow.The method of another protection gas circuit is by using photoelectric sensor to detect ink overflow; but photoelectric sensor can only detect transparent pipeline; when using UV ink; UV ink runs into ultraviolet and can solidify; so pipeline is necessary for opaque; the opaque pipeline using photoelectric sensor and UV ink to use is incompatible, cannot realize the monitoring for UV ink.
Summary of the invention
Technical problem to be solved by this invention is for above shortcomings in prior art; a kind of excess flow protection device and cyclic ink supply system of work print cartridge are provided; this excess flow protection device effectively can be protected the ink overflow of work print cartridge; avoid the various problems that ink overflow phenomenon causes, effectively can protect whole cyclic ink supply system.
The technical scheme that solution the technology of the present invention problem adopts is to provide a kind of excess flow protection device of work print cartridge, and it comprises: at least one ink overflow print cartridge, power unit,
When the ink in the print cartridge that works overflows, described ink flows to described ink overflow print cartridge by the ink passage between described work print cartridge and described ink overflow print cartridge;
The input of described power unit is connected with described ink overflow print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to discharge.
Preferably, the first level sensing unit of the liquid level for detecting ink in described ink overflow print cartridge is provided with in described ink overflow print cartridge.
Preferably, described work print cartridge is communicated with ink supply bucket, and the ink passage between work print cartridge and ink supply bucket is provided with ink supply switch element, and described first level sensing unit is electrically connected with described ink supply switch element;
When described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge, then ink supply switch element described in described first level sensing unit triggers, described ink supply switch element proceeds to off-state from conducting state.
Preferably, described ink overflow print cartridge is provided with gas circuit mouth, and described gas circuit mouth is communicated with extraneous gas circuit; Described extraneous gas circuit comprises negative pressure generating unit, and described negative pressure generating unit is connected with the gas circuit mouth of described ink overflow print cartridge, for applying negative pressure to described ink overflow print cartridge.
Preferably, the gas circuit mouth of described ink overflow print cartridge is provided with air circuit breaker unit, and described air circuit breaker unit is for controlling the keying of described extraneous gas circuit, and described first level sensing unit is electrically connected with described air circuit breaker unit;
When described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge; then air circuit breaker unit described in described first level sensing unit triggers; described air circuit breaker unit proceeds to off-state from conducting state, thus protects extraneous gas circuit.
Preferably, described first level sensing unit is electrically connected with described power unit, when described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge, then power unit described in described first level sensing unit triggers, the ink in described ink overflow print cartridge is discharged by described power unit.
Preferably, described excess flow protection device also comprises alarm unit, and described first level sensing unit is electrically connected with described alarm unit;
When described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge, then alarm unit described in described first level sensing unit triggers is reported to the police.
Preferably, the output of described power unit is communicated with described work print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to be discharged in described work print cartridge.
Preferably, the ink passage between described power unit and described work print cartridge is provided with filter element.
Preferably, the second level sensing unit of the liquid level for detecting ink in described work print cartridge is provided with in described work print cartridge.
Preferably, described second level sensing unit is electrically connected with described power unit, when described second level sensing unit inspection exceedes default liquid level to the liquid level in described work print cartridge, then power unit described in described second level sensing unit triggers, described power unit stops the ink in described ink overflow print cartridge to be discharged in described work print cartridge.
Preferably, described power unit adopts pump.
Preferably, described work print cartridge and described ink overflow print cartridge adopt integrated setting, and described work print cartridge and described ink overflow print cartridge are separated by barrier sheet.
The present invention also provides a kind of cyclic ink supply system, comprises the excess flow protection device of above-mentioned work print cartridge.
Preferably, described cyclic ink supply system also comprises work print cartridge, and described work print cartridge comprises main black bucket, ink feed print cartridge and returns print cartridge,
Described main black bucket and described ink feed print cartridge pass through pipeline connection; described ink feed print cartridge is communicated with by ink jet-print head with described time print cartridge; described time print cartridge and described main black bucket by pipeline connection, the excess flow protection device of any one or a several corresponding described work print cartridge respectively in described main black bucket, described ink feed print cartridge, described time print cartridge.
Excess flow protection device in the present invention effectively can be protected the ink overflow of work print cartridge; by power unit, the ink in ink overflow print cartridge is discharged ink overflow print cartridge fast; reach the object of quick protection work print cartridge; the various problems that the ink overflow phenomenon avoiding work print cartridge causes; effectively can protect whole cyclic ink supply system; the ink such as avoiding spilling enters into the gas circuit of whole cyclic ink supply system; protect the components and parts in gas circuit, avoid the corrosion of ink for whole cyclic ink supply system of spilling.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of common cyclic ink supply system;
Fig. 2 is the schematic diagram of the ink overflow print cartridge of the excess flow protection device of work print cartridge in embodiment 2;
Fig. 3 is the schematic diagram of the ink overflow print cartridge of the excess flow protection device of work print cartridge in embodiment 3;
Fig. 4 is the schematic diagram of the cyclic ink supply system of work print cartridge in embodiment 4.
101, the main black bucket of 201-; 102-pump; 103-degas module; 104-ink supply bucket; 105,203-ink feed print cartridge; 106,204-returns print cartridge; 107,210-ink jet-print head; 202-first protects chamber; 205-second protects chamber; 206-the 3rd protects chamber; 207-first negative pressure generating unit; 208-second negative pressure generating unit; 209-the 3rd negative pressure generating unit; 211-first pump; 212-second pump; 213-the 3rd pump; 301-ink overflow print cartridge; 302-gas circuit mouth; 303-pump orifice; 304-discharging opening for permitting discharging of the toner; 305-first level sensing unit; 306,401-work print cartridge; 402-first ink overflow print cartridge; 403-second ink overflow print cartridge; 307,404-negative pressure generating unit; 308,405-power unit; 406-first level sensing unit.
Detailed description of the invention
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
The present embodiment provides a kind of excess flow protection device of work print cartridge, and it comprises: at least one ink overflow print cartridge, power unit,
When the ink in the print cartridge that works overflows, described ink flows to described ink overflow print cartridge by the ink passage between described work print cartridge and described ink overflow print cartridge;
The input of described power unit is connected with described ink overflow print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to discharge.
Ink in ink overflow print cartridge is discharged ink overflow print cartridge by power unit by excess flow protection device in the present embodiment fast, reaches the object of quick protection work print cartridge, the various problems that the ink overflow phenomenon avoiding work print cartridge causes.
Embodiment 2
As shown in Figure 2, the present embodiment provides a kind of excess flow protection device of work print cartridge, and it comprises: at least one ink overflow print cartridge 301, power unit 308,
When the ink in the print cartridge 306 that works overflows, described ink flows to described ink overflow print cartridge 301 by the ink passage between described work print cartridge 306 and described ink overflow print cartridge 301;
The input of described power unit 308 is connected with described ink overflow print cartridge 301, and described power unit 308 is for discharging the ink in described ink overflow print cartridge 301.
In the present embodiment; work print cartridge 306 is for by ink feeding system ink supply; power unit 308 specifically adopts pump; ink overflow print cartridge 301 mainly plays the protective effect for work print cartridge 306; ink passage between work print cartridge 306 and ink overflow print cartridge 301 not only can as the ink passage of ink work between print cartridge 306 and ink overflow print cartridge 301, but also can as the gas channels of the gas worked between print cartridge 306 and ink overflow print cartridge 301.When the ink in the print cartridge 306 that works does not overflow, work print cartridge 306 achieves being communicated with of gas with between ink overflow print cartridge 301 by ink passage, and ink overflow print cartridge 301 is identical with the air pressure above work print cartridge 306; When the ink in the print cartridge 306 that works overflows, between work print cartridge 306 and ink overflow print cartridge 301, achieved the circulation of ink by ink passage; When the ink in work print cartridge 306 overflows and flows to a certain degree, no longer flow in ink overflow print cartridge 301, then now work print cartridge 306 and ink overflow print cartridge 301 achieve again being communicated with of gas between two print cartridges.Certainly, can arrange ink passage and gas channels respectively between work print cartridge 306 and ink overflow print cartridge 301, such gas channels makes to keep the gas circuit of gas to be communicated with between work print cartridge 306 with ink overflow print cartridge 301 always.Ink passage can adopt one or a few pipeline, also can adopt other attainable structure.Gas channels can adopt one or a few pipeline, also can adopt other attainable structure.In the present embodiment, the ink passage between work print cartridge 306 and ink overflow print cartridge 301 adopts conduit, and one end of this conduit is connected with the high portion of work print cartridge 306, and other one end of this conduit is connected with the high-end of ink overflow print cartridge 301.Ink passage is also gas channels simultaneously, greatly can save the amount of the pipeline in whole excess flow protection device, thus simplifies the manufacturing process of excess flow protection device.
Ink overfill in work print cartridge 306 is overflowed, ink flows in ink overflow print cartridge 301 by the ink passage between work print cartridge 306 and ink overflow print cartridge 301, when the liquid level of the ink in ink overflow print cartridge 301 exceedes preset value, then stop to the ink supply of work print cartridge 306, and disconnect the gas circuit mouth of ink overflow print cartridge 301, check the fault of whole ink feeding system.After pending fault is got rid of, then discharged by the ink in ink overflow print cartridge 301 by pump, the switch herein for pump is that the mode manually controlled is carried out.Manually control, the time of the whole ink feeding system fault of inspection of operator's abundance can be given, avoid whole excess flow protection device also to work under fault.
Preferably, the liquid level first level sensing unit 305 for detecting ink in described ink overflow print cartridge 301 is provided with in described ink overflow print cartridge 301.In the present embodiment, the first level sensing unit 305 specifically adopts liquid level sensor.
Preferably, described ink overflow print cartridge 301 is provided with gas circuit mouth, and described gas circuit mouth is communicated with extraneous gas circuit, and described extraneous gas circuit comprises negative pressure generating unit 307, described negative pressure generating unit 307 is connected with the gas circuit mouth of described ink overflow print cartridge 301, for applying negative pressure to described ink overflow print cartridge 301.In ink jet printing or inkjet printing, due to the difference in height by controlling each work print cartridge 306 control ink the flowing of whole system and flow velocity difficulty higher, the flowing of ink and the point pressure of ink jet-print head can well be controlled by controlling negative pressure, thus realize one preferably to ink.Owing to being achieved the connection in gas circuit between ink overflow print cartridge 301 and work print cartridge 306 by ink passage, by applying negative pressure to ink overflow print cartridge 301, the negative pressure value in ink overflow print cartridge 301 and the negative pressure value in work print cartridge 306 can be controlled simultaneously.Not only can control ink overflow print cartridge 301 consistent with the pressure in work print cartridge 306, and can by the negative pressure value in control work print cartridge 306, the flowing realizing ink for whole ink feeding system provides power.
Preferably, the gas circuit mouth of described ink overflow print cartridge 301 is provided with air circuit breaker unit, and described air circuit breaker unit is for controlling the keying of described extraneous gas circuit, and described first level sensing unit 305 is electrically connected with described air circuit breaker unit;
When the liquid level of the ink that described first level sensing unit 305 detects in described ink overflow print cartridge 301 exceedes default liquid level; then described first level sensing unit 305 triggers described air circuit breaker unit; described air circuit breaker unit proceeds to off-state from conducting state, thus protects extraneous gas circuit.After the gas circuit in ink overflow print cartridge 301 is cut-off, certain space can be occupied in ink overflow print cartridge 301 owing to overflowing to the ink in ink overflow print cartridge 301 from work print cartridge 306, thus the pressure ceaselessly increased in ink overflow print cartridge 301, can slow down or avoid the ink in work print cartridge 306 to continue the phenomenon of ink overflow.
Preferably, described work print cartridge 306 adopts integrated setting with described ink overflow print cartridge 301, and described work print cartridge 306 is separated by barrier sheet with described ink overflow print cartridge 301.Certainly, the print cartridge 306 that works also can be arranged with ink overflow print cartridge 301 split.As shown in Figure 2, ink overflow print cartridge 301 is provided with discharging opening for permitting discharging of the toner 304, pump orifice 303, gas circuit mouth 302, in the present embodiment, the gas circuit mouth 302 of ink overflow print cartridge 301 is arranged on the high portion of ink overflow print cartridge 301, and ink overflow print cartridge 301 and the external world realize gas circuit and be communicated with.Be connected by pipeline between described negative pressure generating unit 307 with described ink overflow print cartridge 301, the interface position of described pipeline and described ink overflow print cartridge 301 is gas circuit mouth 302.The input of described power unit 308 is connected by pipeline with between ink overflow print cartridge 301, and the interface position of described pipeline and described ink overflow print cartridge 301 is discharging opening for permitting discharging of the toner 304.Owing to being provided with ink passage between work print cartridge 306 and ink overflow print cartridge 301, this ink passage is also gas channels, so work print cartridge 306 is also equivalent to be communicated with extraneous gas circuit by the gas circuit mouth 302 of ink overflow print cartridge 301.Ink passage between ink overflow print cartridge 301 and work print cartridge 306 and the interface position in ink overflow print cartridge 301 are the pump orifice 303 of ink overflow print cartridge 301.This work print cartridge 306 adopts integrated setting greatly to save material with ink overflow print cartridge 301, and adds the stability of excess flow protection device, and picks and places while being convenient to work print cartridge 306 and ink overflow print cartridge 301.
Preferably, described work print cartridge 306 is communicated with ink supply bucket, and the ink passage between work print cartridge 306 and ink supply bucket is provided with ink supply switch element, and described first level sensing unit 305 is electrically connected with described ink supply switch element;
When the liquid level of the ink that described first level sensing unit 305 detects in described ink overflow print cartridge 301 exceedes default liquid level, then described first level sensing unit 305 triggers described ink supply switch element, and described ink supply switch element proceeds to off-state from conducting state.By stopping ink supply bucket to the ink supply of work print cartridge 306 in time, cutting off the ink source in work print cartridge 306, thus avoiding continuation ink overflow.
Preferably, described first level sensing unit 305 is electrically connected with described power unit 308, when the liquid level of the ink that described first level sensing unit 305 detects in described ink overflow print cartridge 301 exceedes default liquid level, then described first level sensing unit 305 triggers described power unit 308, ink in described ink overflow print cartridge 301 is discharged by described power unit 308, thus achieves the Automated condtrol of the switch for power unit 308.In the present embodiment, the first level sensing unit 305 specifically adopts the first liquid level sensor.Ink in work print cartridge 306 is because a variety of causes starts upwards to overflow, during ink passage between the liquid level arrival work print cartridge 306 and ink overflow print cartridge 301 of the ink in print cartridge 306 that works, the ink in work print cartridge 306 can be flow in ink overflow print cartridge 301 by this ink passage.Along with increasing of the ink in ink overflow print cartridge 301, the liquid level of the ink in ink overflow print cartridge 301 starts to rise, when the first liquid level sensor detects that the liquid level of the ink in ink overflow print cartridge 301 arrives the liquid level preset, then described first level sensing unit 305 triggers described power unit 308, and the ink in described ink overflow print cartridge 301 is discharged by described power unit 308.Ink overflow print cartridge 301 can be resisted because ink feeding system breaks down and causes work print cartridge 306 to occur ink overflow phenomenon, or the ink overflow phenomenon that temperature Change causes.Now, also may there is fault in the cyclic ink supply system at work print cartridge 306 place, manually can shut down, then check cyclic ink supply system.
Preferably, described excess flow protection device also comprises alarm unit, and described first level sensing unit 305 is electrically connected with described alarm unit;
When the liquid level of the ink that described first level sensing unit 305 detects in described ink overflow print cartridge 301 exceedes default liquid level, then described first level sensing unit 305 triggers the warning of described alarm unit.Operating personnel's Timeliness coverage ink feeding system can be made to occur ink overflow phenomenon by reporting to the police.In the present embodiment, alarm unit specifically adopts audible-visual annunciator.
Preferably, the output of described power unit 308 is communicated with described work print cartridge 306, and described power unit 308 is for being discharged to the ink in described ink overflow print cartridge 301 in described work print cartridge 306.In the present embodiment, power unit 308 specifically adopts pump.Directly the ink in ink overflow print cartridge 301 is discharged in work print cartridge 306 by power unit 308, the ink in ink overflow print cartridge 301 can be avoided outwards to overflow again, the ink overflowed from work print cartridge 306 is not wasted, reaches good recycling.
Certainly, when the liquid level of the ink that described first level sensing unit 305 detects in described ink overflow print cartridge 301 exceedes default liquid level, then described first level sensing unit 305 can trigger described ink supply switch element simultaneously and proceed to off-state from conducting state, trigger described air circuit breaker unit and proceed to off-state from conducting state, trigger power unit 308 and the ink in described ink overflow print cartridge 301 is discharged.
Preferably, the ink passage worked between print cartridge 306 described in described power unit 308 is provided with filter element.In the present embodiment, described filter element specifically adopts filter.Ink in ink overflow print cartridge 301 is discharged in described work print cartridge 306 by ink passage by power unit 308, because the ink in work print cartridge 306 can be used, and the ink in ink overflow print cartridge 301 may overflow due to various abnormal conditions, easy introducing impurity, so need to filter from the ink in ink overflow print cartridge 301 before entering into work print cartridge 306.
Preferably, the second level sensing unit of the liquid level for detecting ink in described work print cartridge 306 is provided with in described work print cartridge 306.In the present embodiment, the second level sensing unit specifically adopts liquid level sensor.
Preferably, described second level sensing unit is electrically connected with described power unit 308, when described second level sensing unit inspection exceedes default liquid level to the liquid level in described work print cartridge 306, then power unit 308 described in described second level sensing unit triggers, described power unit 308 stops the ink in described ink overflow print cartridge 301 to be discharged in described work print cartridge 306.Certainly, also can by the ink passage between power unit 308 and work print cartridge 306 arranges a switch valve, this switch valve connects another one ink passage, the ink in ink overflow print cartridge 301 can be discharged to the place outside ink overflow print cartridge 301 and work print cartridge 306 by this ink passage.After power unit 308 described in the second level sensing unit triggers stops that the ink in described ink overflow print cartridge 301 is discharged to described work print cartridge 306 by ink passage, then this switch valve conducting another one ink passage, is discharged to the place outside ink overflow print cartridge 301 and work print cartridge 306 by the ink in ink overflow print cartridge 301.
Excess flow protection device in the present embodiment effectively can be protected the ink overflow of work print cartridge 306; by power unit 308, the ink in ink overflow print cartridge 301 is discharged ink overflow print cartridge fast; reach the object of quick protection work print cartridge 306, the various problems that the ink overflow phenomenon avoiding work print cartridge 306 causes.This excess flow protection device not only achieves a kind of simple protection, but also achieves Automated condtrol and protection, can realize automatically protecting when guarding without operating personnel.Ink in ink overflow print cartridge 301 is discharged in work print cartridge 306 by power unit 308 by this excess flow protection device again, avoids the waste of ink.
Embodiment 3
As shown in Figure 3, the difference of the present embodiment and embodiment 2 is: excess flow protection device comprises at least two ink overflow print cartridges, and when ink overflow print cartridge is two, wherein, ink overflow print cartridge is the first ink overflow print cartridge 402, ink overflow print cartridge is the second ink overflow print cartridge 403,
By ink channel connection between described first ink overflow print cartridge 402 and described work print cartridge 401; Ink passage is provided with between described first ink overflow print cartridge 402 and described work print cartridge 401, when the ink in the print cartridge 401 that works overflows, described ink flows to described first ink overflow print cartridge 402 by the ink passage between described first ink overflow print cartridge 402 and described work print cartridge 401;
Described second ink overflow print cartridge 403 is provided with gas circuit mouth;
By ink channel connection between described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402; Ink passage is provided with between described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402, when the ink in the first ink overflow print cartridge 402 overflows, described ink flows to described second ink overflow print cartridge 403 by the ink passage between described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402;
The input of described power unit 405 is connected with described second ink overflow print cartridge 403, and described power unit 405 is for discharging the ink in described second ink overflow print cartridge 403.
Preferably, described excess flow protection device also comprises negative pressure generating unit 404, and described negative pressure generating unit 404 is connected with the gas circuit mouth of described ink overflow print cartridge, for applying negative pressure to described ink overflow print cartridge.Described negative pressure generating unit 404 is communicated with the second ink overflow print cartridge 403 by the gas circuit mouth of the second ink overflow print cartridge 403.
Preferably, the first level sensing unit 406 is provided with in the second ink overflow print cartridge 403.
By arranging two ink overflow print cartridges in excess flow protection device; the cushioning effect of whole excess flow protection device can be strengthened; when the ink in the print cartridge 401 that works overflows; once can be cushioned by the first ink overflow print cartridge 402; again cushioned by the second ink overflow print cartridge 403 again, and increased cushion space.Certainly as required or the size in space, quantity and the volume of the ink overflow print cartridge in excess flow protection device can be rationally set.
Embodiment 4
As shown in Figure 4, this enforcement provides a kind of cyclic ink supply system, comprises the excess flow protection device of the work print cartridge in embodiment 1 ~ 3.
Preferably, described cyclic ink supply system comprises work print cartridge, and described work print cartridge comprises main black bucket 201, ink feed print cartridge 203 and returns print cartridge 204,
Described main black bucket 201 passes through pipeline connection with described ink feed print cartridge 203; described ink feed print cartridge 203 is communicated with by ink jet-print head with described time print cartridge 204; described time print cartridge 204 passes through pipeline connection with described main black bucket 201, the excess flow protection device of described main black bucket 201, described ink feed print cartridge 203, the described time corresponding described work print cartridge of print cartridge 204 difference.Wherein the excess flow protection device of main black bucket 201 correspondence is called main black bucket excess flow protection device; the excess flow protection device of ink feed print cartridge 203 correspondence is called ink feed print cartridge excess flow protection device, and the excess flow protection device returning print cartridge 204 correspondence is called back print cartridge excess flow protection device.
Preferably, the pipeline between described main black bucket 201 and described ink feed print cartridge 203 is provided with degas module, described degas module is used for carrying out degasification to the ink flowing into ink feed print cartridge 203 from main black bucket 201.
Described main black bucket excess flow protection device, ink feed print cartridge excess flow protection device, time print cartridge excess flow protection device are excess flow protection device, and these excess flow protection devices include: at least one ink overflow print cartridge, power unit, wherein,
When the ink in the print cartridge that works overflows, described ink flows to described ink overflow print cartridge by the ink passage between described work print cartridge and described ink overflow print cartridge;
The input of described power unit is connected with described ink overflow print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to discharge.
In the present embodiment, the work print cartridge in main black bucket excess flow protection device specifically adopts main black bucket 201, and ink overflow print cartridge specifically adopts the first protection chamber 202, and power unit specifically adopts the first pump 211.Main black bucket 201 and first is protected between chamber 202 and is provided with ink passage, and when the ink in main black bucket 201 overflows, described ink protects the ink passage between chamber 202 to flow to the first protection chamber 202 by main black bucket 201 and first.
Preferably, the first protection chamber 202 is provided with gas circuit mouth, and this gas circuit mouth is connected with the first negative pressure generating unit 207, and the first negative pressure generating unit 207 is for applying negative pressure to the first protection chamber 202.
Preferably, the first protection chamber 202 is provided with discharging opening for permitting discharging of the toner, and the input of the first pump 211 protects chamber 202 to be connected by discharging opening for permitting discharging of the toner and first, and the first pump 211 is for discharging the ink in the first protection chamber 202.
Preferably, the output of the first pump 211 is connected with main black bucket 201, and the first pump 211 is for being discharged to the ink in the first protection chamber 202 in main black bucket 201.
Preferably, the first liquid level sensor is provided with in the first protection chamber 202.
Preferably; the gas circuit mouth in the first protection chamber 202 is provided with the first air circuit breaker; first liquid level sensor is electrically connected with the first air circuit breaker; when the liquid level of the ink that described first liquid level sensor detects in the first protection chamber 202 exceedes default liquid level; then the first liquid level sensor triggers the first air circuit breaker; first air circuit breaker is transferred to off-state from conducting state, now the first protection chamber 202 and the first negative pressure generating unit 207 not conducting.
Preferably; first liquid level sensor is electrically connected with the first pump 211; when the liquid level of the ink that the first liquid level sensor detects in the first protection chamber 202 exceedes default liquid level; then the first liquid level sensor triggers the first pump 211, first pump 211 by the ink discharge in the first protection chamber 202.
Preferably, main black bucket excess flow protection device also comprises the first alarm, and the first liquid level sensor is electrically connected with the first alarm; When the liquid level of the ink that the first liquid level sensor detects in the first protection chamber 202 exceedes default liquid level, then the first liquid level sensor triggers the first alarm equipment alarm.
Preferably, the output of the first pump 211 is communicated with main black bucket 201 by ink passage, and the ink passage between the first pump 211 and main black bucket 201 is provided with filter.
Preferably, the second liquid level sensor is provided with in main black bucket 201.
Preferably, second liquid level sensor is electrically connected with the first pump 211, when the liquid level that the second liquid level sensor detects in main black bucket 201 exceedes default liquid level, then the second liquid level sensor triggers the first pump 211, first pump 211 and stops the ink in main black bucket 201 to be discharged in main black bucket 201.
Preferably, main black bucket 201 and first protects chamber 202 to adopt integrated setting, and main black bucket 201 and first is protected between chamber 202 and separated by barrier sheet.
Preferably, described ink supply bucket (this ink supply bucket does not draw in the diagram) is communicated with main black bucket 201 by ink passage, ink passage between ink supply bucket and main black bucket 201 is provided with ink supply switch element, and described first liquid level sensor is electrically connected with described ink supply switch element;
When the liquid level of the ink that described first liquid level sensor detects in described main black bucket 201 exceedes default liquid level, then described first liquid level sensor triggers described ink supply switch element, and described ink supply switch element proceeds to off-state from conducting state.By stopping ink supply in time, cutting off the ink source in main black bucket, thus avoiding continuation ink overflow.In the present embodiment, ink supply switch element specifically adopts black valve.
Work print cartridge in ink feed print cartridge excess flow protection device in the present embodiment specifically adopts ink feed print cartridge 203, and ink overflow print cartridge specifically adopts the second protection chamber 205, and power unit specifically adopts the second pump 212.Ink feed print cartridge 203 and second is protected between chamber 205 and is provided with ink passage, and when the ink in ink feed print cartridge 203 overflows, described ink protects the ink passage between chamber 205 to flow to the second protection chamber 205 by ink feed print cartridge 203 and second.
Preferably, the second protection chamber 205 is provided with gas circuit mouth, and this gas circuit mouth is connected with the second negative pressure generating unit, and the second negative pressure generating unit is used for applying negative pressure to the second protection chamber 205.
Preferably, the second protection chamber 205 is provided with discharging opening for permitting discharging of the toner, and the input of the second pump 212 protects chamber 205 to be connected by discharging opening for permitting discharging of the toner and second, and the second pump 212 is for discharging the ink in the second protection chamber 205.
Preferably, the output of the second pump 212 is connected with ink feed print cartridge 203, and the second pump 212 is for being discharged to the ink in the second protection chamber 205 in main black bucket 201.
Preferably, the 3rd liquid level sensor is provided with in the second protection chamber 205.
Preferably; the gas circuit mouth in the second protection chamber 205 is provided with the second air circuit breaker; 3rd liquid level sensor is electrically connected with the second air circuit breaker; when the liquid level of the ink that described 3rd liquid level sensor detects in the second protection chamber 205 exceedes default liquid level; then the 3rd liquid level sensor triggers the second air circuit breaker; second air circuit breaker is transferred to off-state from conducting state, now the second protection chamber 205 and the second negative pressure generating unit not conducting.
Preferably; 3rd liquid level sensor is electrically connected with the second pump 212; when the liquid level of the ink that the 3rd liquid level sensor detects in the second protection chamber 205 exceedes default liquid level; then the 3rd liquid level sensor triggers the second pump 212, second pump 212 by the ink discharge in the second protection chamber 205.
Preferably, ink feed print cartridge excess flow protection device also comprises the second alarm, and the 3rd liquid level sensor is electrically connected with the second alarm; When the liquid level of the ink that the 3rd liquid level sensor detects in the second protection chamber 205 exceedes default liquid level, then the 3rd liquid level sensor triggers the second alarm equipment alarm.
Preferably, the output of the second pump 212 is communicated with ink feed print cartridge 203 by ink passage, and the ink passage between the second pump 212 and ink feed print cartridge 203 is provided with filter.
Preferably, the 4th liquid level sensor is provided with in ink feed print cartridge 203.
Preferably, 4th liquid level sensor is electrically connected with the second pump 212, when the liquid level that the 4th liquid level sensor detects in ink feed print cartridge 203 exceedes default liquid level, then the 4th liquid level sensor triggers the second pump 212, second pump 212 and stops the ink in ink feed print cartridge 203 to be discharged in main black bucket 201.
Preferably, ink feed print cartridge 203 and second protects chamber 205 to adopt integrated setting, and ink feed print cartridge 203 and second is protected between chamber 205 and separated by barrier sheet.
The work print cartridge returned in print cartridge excess flow protection device in the present embodiment specifically adopts back print cartridge 204, and ink overflow print cartridge specifically adopts the 3rd protection chamber 206, and power unit specifically adopts the 3rd pump 213.Return print cartridge 204 and the 3rd protect between chamber 206 and be provided with ink passage, when returning the ink in print cartridge 204 and overflowing, described ink is protected the ink passage between chamber 206 to flow to the 3rd by time print cartridge 204 and the 3rd and is protected chamber 206.
Preferably, the 3rd protection chamber 206 is provided with gas circuit mouth, and this gas circuit mouth is connected with the 3rd negative pressure generating unit 209, and the 3rd negative pressure generating unit 209 is for applying negative pressure to the 3rd protection chamber 206.
Preferably, the 3rd protection chamber 206 is provided with discharging opening for permitting discharging of the toner, and the input of the 3rd pump 213 protects chamber 206 to be connected by discharging opening for permitting discharging of the toner and the 3rd, and the 3rd pump 213 is for discharging the ink in the 3rd protection chamber 206.
Preferably, the output of the 3rd pump 213 is connected with time print cartridge 204, and the 3rd pump 213 is for being discharged to the ink in the 3rd protection chamber 206 in main black bucket 201.
Preferably, the 5th liquid level sensor is provided with in the 3rd protection chamber 206.
Preferably; the gas circuit mouth in the 3rd protection chamber 206 is provided with the 3rd air circuit breaker; 5th liquid level sensor is electrically connected with the 3rd air circuit breaker; when the liquid level of the ink that described 5th liquid level sensor detects in the 3rd protection chamber 206 exceedes default liquid level; then the 5th liquid level sensor triggers the 3rd air circuit breaker; 3rd air circuit breaker is transferred to off-state from conducting state, now the 3rd protection chamber 206 and the 3rd negative pressure generating unit 209 not conducting.
Preferably; 5th liquid level sensor is electrically connected with the 3rd pump 213; when the liquid level of the ink that the 5th liquid level sensor detects in the 3rd protection chamber 206 exceedes default liquid level; then the 5th liquid level sensor triggers the 3rd pump the 213, three pump 213 by the ink discharge in the 3rd protection chamber 206.
Preferably, return print cartridge excess flow protection device and also comprise the 3rd alarm, the 5th liquid level sensor is electrically connected with the 3rd alarm; When the liquid level of the ink that the 5th liquid level sensor detects in the 3rd protection chamber 206 exceedes default liquid level, then the 5th liquid level sensor triggers the 3rd alarm equipment alarm.
Preferably, the output of the 3rd pump 213 is communicated with time print cartridge 204 by ink passage, and the ink passage between the 3rd pump 213 and time print cartridge 204 is provided with filter.
Preferably, return in print cartridge 204 and be provided with the 6th liquid level sensor.
Preferably, 6th liquid level sensor is electrically connected with the 3rd pump 213, when the liquid level that the 6th liquid level sensor detects back in print cartridge 204 exceedes default liquid level, then the 6th liquid level sensor triggering the 3rd pump the 213, three pump 213 stops the ink returning in print cartridge 204 to be discharged in main black bucket 201.
Preferably, return print cartridge 204 and the 3rd and protect chamber 206 to adopt integrated setting, time print cartridge 204 and the 3rd is protected between chamber 206 and is separated by barrier sheet.
By ink channel connection between the main black bucket 201 of main black bucket excess flow protection device and the ink feed print cartridge 203 of ink feed print cartridge excess flow protection device; this ink passage is provided with degas module, and the ink that this degas module is used for the ink flowed out from main black bucket 201 to be about to enter into ink feed print cartridge 203 carries out degasification.Second negative pressure generating unit can control the environmental pressure P in ink feed print cartridge excess flow protection device
2, by changing the generation pressure of the second negative pressure generating unit, the environmental pressure P in the second protection chamber 205 can be changed
2.The gas pressure that second negative pressure generating unit generates is linked in ink feed print cartridge 203 by the protection in the second protection chamber 205; second protection chamber 205 is not only played and is prevented ink suck-back from ink feed print cartridge 203 from entering in degas module; also play the effect of gas buffer bottle, maintain the pressure stability in ink feed print cartridge 203.
The ink feed print cartridge 203 of ink feed print cartridge excess flow protection device is communicated with ink jet-print head 210, and ink feed print cartridge 203 is above ink jet-print head 210, and the ink in ink feed print cartridge 203 flow in ink jet-print head 210 by Action of Gravity Field.
Return returning between print cartridge 204 and ink jet-print head 210 of print cartridge excess flow protection device and pass through ink channel connection; return print cartridge 204 above ink jet-print head 210, rely on back the negative pressure produced in print cartridge excess flow protection device to be drawn into back in black print cartridge 204 by the ink in ink jet-print head 210.3rd negative pressure generating unit 209 can control back the environmental pressure P in the excess flow protection device of print cartridge 204
3, by changing the generation pressure of the 3rd negative pressure generating unit 209, the environmental pressure P in the 3rd protection chamber 206 can be changed
3.The gas pressure that 3rd negative pressure generating unit 209 generates is linked into back in print cartridge 204 by the protection in the 3rd protection chamber 206; 3rd protection chamber 206 is not only played and is prevented ink suck-back from ink jet-print head 210 from entering in degas module; also play the effect of gas buffer bottle, maintain back the pressure stability in print cartridge 204.
The print cartridge 204 that returns returning the excess flow protection device of print cartridge 204 passes through ink channel connection with the ink jet-print head 210 of main black bucket excess flow protection device; this ink passage is provided with degas module, and this degas module is used for that the ink flowed out from ink jet-print head 210 is about to the ink entered into back in print cartridge 204 and carries out degasification.First negative pressure generating unit 207 can control the environmental pressure P in the excess flow protection device of main black bucket 201
1, by changing the generation pressure of the first negative pressure generating unit 207, the environmental pressure P in the first protection chamber 202 can be changed
1.The gas pressure that first negative pressure generating unit 207 generates is linked in main black bucket 201 by the protection in the first protection chamber 202; first protection chamber 202 is not only played and is prevented ink from entering in degas module from returning suck-back print cartridge 204; also play the effect of gas buffer bottle, maintain the pressure stability in main black bucket 201.
In this example, main black bucket 201 and ink feed print cartridge 203, the ink pipeline returned between print cartridge 204 do not provide, and add the normal work that other components and parts can not have influence on protective device in ink pipeline wherein.
By ink expanding channels between the main black bucket 201 of main black bucket excess flow protection device and the ink feed print cartridge 203 of ink feed print cartridge excess flow protection device; this ink passage is provided with degas module and pump; the ink that this degas module is used for the ink flowed out from main black bucket 201 to be about to enter into ink feed print cartridge 203 carries out degasification, and this pump provides power for the ink in main black bucket 201 is pumped into ink feed print cartridge 203.Certainly, in whole circulation overflowing protecting system, also has other degas module.
Excess flow protection device in the present embodiment effectively can be protected the ink overflow of work print cartridge; by power unit, the ink in ink overflow print cartridge is discharged ink overflow print cartridge fast; reach the object of quick protection work print cartridge; the various problems that the ink overflow phenomenon avoiding work print cartridge causes; effectively can protect whole cyclic ink supply system; the ink such as avoiding spilling enters into the gas circuit of whole cyclic ink supply system; protect the components and parts in gas circuit, avoid the corrosion of ink for whole cyclic ink supply system of spilling.This cyclic ink supply system not only achieves a kind of simple protection, but also achieves Automated condtrol and protection, to the protection of whole cyclic ink supply system when can realize guarding without operating personnel.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (12)
1. work the excess flow protection device of print cartridge, and it is characterized in that, it comprises: at least one ink overflow print cartridge, power unit,
When the ink in the print cartridge that works overflows, described ink flows to described ink overflow print cartridge by the ink passage between described work print cartridge and described ink overflow print cartridge;
The input of described power unit is connected with described ink overflow print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to discharge.
2. the excess flow protection device of work print cartridge according to claim 1, is characterized in that, is provided with the first level sensing unit of the liquid level for detecting ink in described ink overflow print cartridge in described ink overflow print cartridge.
3. the excess flow protection device of work print cartridge according to claim 2, is characterized in that, described ink overflow print cartridge is provided with gas circuit mouth, and described gas circuit mouth is communicated with extraneous gas circuit; Described extraneous gas circuit comprises negative pressure generating unit, and described negative pressure generating unit is connected with the gas circuit mouth of described ink overflow print cartridge, for applying negative pressure to described ink overflow print cartridge.
4. the excess flow protection device of work print cartridge according to claim 3, it is characterized in that, the gas circuit mouth of described ink overflow print cartridge is provided with air circuit breaker unit, described air circuit breaker unit is for controlling the keying of described extraneous gas circuit, and described first level sensing unit is electrically connected with described air circuit breaker unit;
When described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge; then air circuit breaker unit described in described first level sensing unit triggers; described air circuit breaker unit proceeds to off-state from conducting state, thus protects extraneous gas circuit.
5. the excess flow protection device of work print cartridge according to claim 2; it is characterized in that; described first level sensing unit is electrically connected with described power unit; when described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge; then power unit described in described first level sensing unit triggers, the ink in described ink overflow print cartridge is discharged by described power unit.
6. the excess flow protection device of work print cartridge according to claim 2, is characterized in that, also comprise alarm unit, and described first level sensing unit is electrically connected with described alarm unit;
When described first level sensing unit inspection exceedes default liquid level to the liquid level of the ink in described ink overflow print cartridge, then alarm unit described in described first level sensing unit triggers is reported to the police.
7. the excess flow protection device of the work print cartridge according to claim 1 ~ 6 any one; it is characterized in that; the output of described power unit is communicated with described work print cartridge, and described power unit is used for the ink in described ink overflow print cartridge to be discharged in described work print cartridge.
8. the excess flow protection device of work print cartridge according to claim 7, is characterized in that, the ink passage between described power unit and described work print cartridge is provided with filter element.
9. the excess flow protection device of work print cartridge according to claim 7, is characterized in that, is provided with the second level sensing unit of the liquid level for detecting ink in described work print cartridge in described work print cartridge.
10. the excess flow protection device of work print cartridge according to claim 9; it is characterized in that; described second level sensing unit is electrically connected with described power unit; when described second level sensing unit inspection exceedes default liquid level to the liquid level in described work print cartridge; then power unit described in described second level sensing unit triggers, described power unit stops the ink in described ink overflow print cartridge to be discharged in described work print cartridge.
11. 1 kinds of cyclic ink supply systems, is characterized in that, comprise the excess flow protection device of the work print cartridge described in claim 1 ~ 10 any one.
12. cyclic ink supply systems according to claim 11, is characterized in that, comprise work print cartridge, and described work print cartridge comprises main black bucket, ink feed print cartridge and returns print cartridge,
Described main black bucket and described ink feed print cartridge pass through pipeline connection; described ink feed print cartridge is communicated with by ink jet-print head with described time print cartridge; described time print cartridge and described main black bucket by pipeline connection, the excess flow protection device of any one or a several corresponding described work print cartridge respectively in described main black bucket, described ink feed print cartridge, described time print cartridge.
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| CN201310282473.0A CN104275937B (en) | 2013-07-05 | 2013-07-05 | The excess flow protection device of a kind of work print cartridge and cyclic ink supply system |
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| CN104275937B CN104275937B (en) | 2016-09-07 |
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| CN110774767A (en) * | 2018-07-31 | 2020-02-11 | 北京梦之墨科技有限公司 | Liquid level control assembly and control method of liquid metal ink supply system |
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| CN111605319A (en) * | 2020-06-30 | 2020-09-01 | 南阳柯丽尔科技有限公司 | Ink supply control method and device |
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| CN111645425A (en) * | 2020-06-10 | 2020-09-11 | Tcl华星光电技术有限公司 | Ink jet printing apparatus and bubble discharge method thereof |
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| CN111605319A (en) * | 2020-06-30 | 2020-09-01 | 南阳柯丽尔科技有限公司 | Ink supply control method and device |
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