CN216659326U - Negative pressure adjusting device of digital printing ink supply system - Google Patents
Negative pressure adjusting device of digital printing ink supply system Download PDFInfo
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- CN216659326U CN216659326U CN202123318658.1U CN202123318658U CN216659326U CN 216659326 U CN216659326 U CN 216659326U CN 202123318658 U CN202123318658 U CN 202123318658U CN 216659326 U CN216659326 U CN 216659326U
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Abstract
The utility model discloses a negative pressure adjusting device of a digital printing ink supply system.A spray head is provided with an ink inlet and a circulating ink outlet, the ink outlet of an ink inlet bottle is connected with the ink inlet of the spray head, the ink inlet of the circulating ink bottle is connected with the circulating ink outlet of the spray head, and the ink outlet of the circulating ink bottle is connected with the ink inlet bottle; the negative pressure output port of the high-frequency two-way valve is connected with the negative pressure input port of the buffer, the negative pressure output port of the buffer is connected with the negative pressure input port of the circulating ink bottle, the pressure relief input end of the high-frequency pressure relief valve is connected with the negative pressure input port of the buffer, and the pressure relief output end of the high-frequency pressure relief valve is communicated with the outside. The negative pressure adjusting device of the digital printing ink supply system solves the problems of large negative pressure fluctuation and slow response of the existing ink supply system.
Description
Technical Field
The utility model relates to the technical field of digital printing, in particular to a negative pressure adjusting device of a digital printing ink supply system.
Background
In the textile digital printing industry, a negative pressure pump is adopted to directly pump air from an ink box of an ink supply system to generate negative pressure, so that neutrality of ink is balanced, and the ink cannot seep out of a spray head. However, the negative pressure fluctuation of the existing negative pressure ink supply system is large, and when the flow of the negative pressure pump is small, the set negative pressure can be recovered for a long time when the positive pressure is used for pressing ink; when the negative pressure pump flow rate is too high, the negative pressure generated when the negative pressure pump is operated easily overshoots and exceeds a set negative pressure value, and the negative pressure cannot be stabilized within a set range. Due to the large negative pressure fluctuation, the printed pattern has color difference, and ink leakage or ink break of the nozzle can occur.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks, the present invention provides a negative pressure adjustment device for a digital printing ink supply system, which solves the problems of the existing ink supply system that the negative pressure fluctuation is large, the printed patterns have color difference, and ink leakage or ink break of the nozzles occurs.
In order to achieve the purpose, the utility model adopts the following technical scheme: a negative pressure adjusting device of a digital printing ink supply system comprises an ink inlet bottle, a spray head, a circulating ink bottle, a buffer and a negative pressure source;
the nozzle is provided with an ink inlet and a circulating ink outlet, the ink outlet of the ink inlet bottle is connected with the ink inlet of the nozzle, the ink inlet of the circulating ink bottle is connected with the circulating ink outlet of the nozzle, and the ink outlet of the circulating ink bottle is connected with the ink inlet bottle;
still include negative pressure adjusting device, the negative pressure source passes through negative pressure adjusting device with the negative pressure input port of circulation ink bottle is connected, negative pressure adjusting device includes high frequency two-way valve, high frequency relief valve and buffer, the negative pressure delivery outlet of negative pressure source with the one end of high frequency two-way valve is connected, the other end of high frequency two-way valve with the negative pressure input port of buffer is connected, the negative pressure delivery outlet of buffer with the negative pressure input port of circulation ink bottle is connected, the pressure release output of high frequency relief valve with the negative pressure input port of buffer is connected, the pressure release input of high frequency relief valve communicates with the external world.
It is worth pointing out that the ink bottle further comprises a degassing lung, the degassing lung is arranged between the ink inlet bottle and the nozzle, an ink inlet of the degassing lung is connected with an ink outlet of the ink inlet bottle, and an ink outlet of the degassing lung is connected with an ink inlet of the nozzle;
the degassing lung is provided with a negative pressure input port, and the negative pressure input port of the degassing lung is connected with a negative pressure output port of the negative pressure source.
Optionally, the negative pressure adjusting device further comprises a negative pressure regulating valve, a pressure regulating input end of the negative pressure regulating valve is connected with a negative pressure output port of the negative pressure source, and a pressure regulating output end of the negative pressure regulating valve is connected with one end of the high-frequency two-way valve.
The ink-saving device comprises a circulating ink bottle, a nozzle, an ink inlet of the circulating ink bottle, an ink outlet of the nozzle, an ink outlet of the circulating ink bottle, an ink locking valve, an ink outlet of the ink locking valve and an ink outlet of the nozzle.
Preferably, the ink bottle further comprises a positive pressure adjusting device and a positive pressure pump, wherein the positive pressure adjusting device comprises a positive pressure two-way valve, a positive pressure output port of the positive pressure pump is connected with one end of the positive pressure two-way valve, and the other end of the positive pressure two-way valve is connected with a positive pressure input port of the ink bottle.
It is worth to say that, the positive pressure adjusting device further comprises a positive pressure regulating valve, the positive pressure regulating valve is arranged between the positive pressure pump and the positive pressure adjusting device, a pressure regulating input end of the positive pressure regulating valve is connected with a positive pressure output port of the positive pressure pump, and a pressure regulating output end of the positive pressure regulating valve is connected with one end of the positive pressure two-way valve.
Optionally, the positive pressure adjusting device further comprises a positive pressure relief valve, a pressure relief input end of the positive pressure relief valve is connected with a positive pressure output port of the ink inlet bottle, and a pressure relief output end of the positive pressure relief valve is communicated with the outside.
Specifically, still include first filter and second filter, the negative pressure input port of negative pressure source passes through first filter is connected with the external world, the pressure release input of high frequency relief valve passes through the second filter communicates with the external world.
One of the above technical solutions has the following beneficial effects: in the negative pressure adjusting device of the digital printing ink supply system, the negative pressure in the circulating ink bottle is adjusted in real time through the negative pressure source and the negative pressure adjusting device, so that the negative pressure of the whole air path is kept stable, the quality of printed patterns is improved, and the condition that ink seeps or breaks through a nozzle can be avoided. The working principle of the negative pressure adjusting device of the digital printing ink supply system is as follows: the ink inlet bottle pumps ink to the spray head, on one hand, the spray head sprays the ink to the surface of the textile fabric through an ink jet port of the spray head, on the other hand, redundant ink in the spray head flows to the circulating ink bottle through an ink outlet under the action of differential pressure through negative pressure in the circulating ink bottle, and then the circulating ink bottle returns the ink to the ink inlet bottle, so that the circulating purpose is achieved. During printing, as the liquid level of ink in the circulating ink bottle rises, the negative pressure in the circulating ink bottle can be reduced, at the moment, the high-frequency two-way valve is opened, the high-frequency pressure release valve is closed, the negative pressure in the buffer is increased through the negative pressure source, so that the negative pressure in the circulating ink bottle is increased, and the negative pressure is kept at a set value. When the liquid level in the circulating ink bottle is reduced, the negative pressure in the circulating ink bottle can be increased, the high-frequency pressure release valve is opened at the moment, the high-frequency two-way valve is closed, the external positive pressure can enter the buffer from the high-frequency pressure release valve, the negative pressure in the buffer is reduced, and therefore the negative pressure in the circulating ink bottle is promoted to be reduced, and the negative pressure is kept at a set value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Wherein: 1 feeding an ink bottle; 11 degassing the lungs; 2, a spray head; 3, circulating the ink bottle; 31 an ink lock valve; 5, a negative pressure source; 61 high frequency two-way valve; 62, high-frequency pressure relief valves; 63 negative pressure regulating valve; a 64 buffer; 71 a positive pressure two-way valve; 72 positive pressure regulating valve; 73 positive pressure relief valves; 8 a first filter; 9 a second filter.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, whether explicit or implicit, for distinguishing between the described features, whether sequential or explicit.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes, with reference to fig. 1, a negative pressure adjustment device of a digital printing ink supply system according to an embodiment of the present invention, including an ink inlet bottle 1, a nozzle 2, a circulating ink bottle 3, a buffer 64, and a negative pressure source 5;
the sprayer 2 is provided with an ink inlet and a circulating ink outlet, the ink outlet of the ink inlet bottle 1 is connected with the ink inlet of the sprayer 2, the ink inlet of the circulating ink bottle 3 is connected with the circulating ink outlet of the sprayer 2, and the ink outlet of the circulating ink bottle 3 is connected with the ink inlet bottle 1; the nozzle 2 is further provided with an ink jet, and the ink jet of the nozzle 2 is used for spraying ink on the surface of the textile.
Still include negative pressure adjusting device, negative pressure source 5 passes through negative pressure adjusting device with the negative pressure input port of circulation ink bottle 3 is connected, negative pressure adjusting device includes high frequency two-way valve 61, high frequency relief valve 62 and buffer 64, negative pressure delivery outlet of negative pressure source 5 with the one end of high frequency two-way valve 61 is connected, the other end of high frequency two-way valve 61 with the negative pressure input port of buffer 64 is connected, the negative pressure delivery outlet of buffer 64 with the negative pressure input port of circulation ink bottle 3 is connected, the pressure release output of high frequency relief valve 62 with the negative pressure input port of buffer 64 is connected, the pressure release input of high frequency relief valve 62 communicates with the external world.
As shown in fig. 1, the connecting line with the arrow is an air path for conveying air, the direction of the arrow is a flowing direction of the air, wherein the positive pressure input port is used for inputting air, the positive pressure output port is used for outputting air, the negative pressure input port is used for outputting air, and the negative pressure output port is used for inputting air. The connecting line without an arrow is an ink path for transferring ink.
In the negative pressure adjusting device of the digital printing ink supply system, the negative pressure in the circulating ink bottle 3 is adjusted in real time through the negative pressure source 5 and the negative pressure adjusting device, so that the negative pressure of the whole air path is kept stable, the quality of printed patterns is improved, and the condition that the ink seeps or is broken by the spray head 2 can be avoided.
The working principle of the negative pressure adjusting device of the digital printing ink supply system is as follows: the ink inlet bottle 1 pumps ink to the spray head 2, on one hand, the spray head 2 sprays the ink to the surface of the textile fabric through an ink spraying opening of the spray head, on the other hand, redundant ink in the spray head 2 flows to the circulating ink bottle 3 through an ink outlet under the action of pressure difference through negative pressure in the circulating ink bottle 3, and then the circulating ink bottle 3 returns the ink to the ink inlet bottle 1, so that the circulating purpose is achieved. During printing, as the liquid level of the ink in the circulating ink bottle 3 increases, the negative pressure in the circulating ink bottle 3 decreases, at this time, the high-frequency two-way valve 61 is opened and the high-frequency pressure relief valve 62 is closed, and the negative pressure in the buffer 64 is increased by the negative pressure source 5, so that the increase of the negative pressure in the circulating ink bottle 3 is promoted, and the negative pressure is kept at a set value. When the liquid level in the circulating ink bottle 3 decreases, the negative pressure in the circulating ink bottle 3 increases, at this time, the high-frequency pressure relief valve 62 is opened and the high-frequency two-way valve 61 is closed, so that the external positive pressure enters the buffer 64 from the high-frequency pressure relief valve 62, the negative pressure in the buffer 64 decreases, and the negative pressure in the circulating ink bottle 3 is promoted to decrease, and the negative pressure is kept at the set value.
The high-frequency two-way valve 61 and the high-frequency pressure release valve 62 are valves with high frequency and small flow, high-frequency on-off is utilized, small flow adjustment unit flow is combined, adjustment accuracy of the high-frequency two-way valve 61 and the high-frequency pressure release valve 62 can be improved, stability of negative pressure of an air path is guaranteed, fluctuation of the negative pressure is stable within 0.1KPa, and the air path is simple and low in cost.
In some embodiments, the ink bottle further comprises a degassing lung 11, the degassing lung 11 is disposed between the ink bottle 1 and the head 2, an ink inlet of the degassing lung 11 is connected to an ink outlet of the ink bottle 1, and an ink outlet of the degassing lung 11 is connected to an ink inlet of the head 2; the degassing lung 11 is provided with a negative pressure input port, and the negative pressure input port of the degassing lung 11 is connected with a negative pressure output port of the negative pressure source 5. The degassing lung 11 is used to degas the ink and prevent the ink ejected from the head 2 from having bubbles. The negative pressure source 5 forms negative pressure inside the degassing lung 11, so that the ink in the ink bottle 1 can rapidly flow into the degassing lung 11, and the efficiency of digital printing is improved.
It should be noted that the negative pressure adjusting device further includes a negative pressure regulating valve 63, a pressure regulating input end of the negative pressure regulating valve 63 is connected to a negative pressure output port of the negative pressure source 5, and a pressure regulating output end of the negative pressure regulating valve 63 is connected to one end of the high-frequency two-way valve 61. The negative pressure input port of the degassing lung 11 is communicated with the negative pressure input port of the high-frequency two-way valve 61, and the negative pressure of the degassing lung 11 is higher, so that the negative pressure is required to be reduced to 10Kpa by the negative pressure regulating valve 63 to be connected to the high-frequency two-way valve 61, and the spray head 2 is prevented from being damaged by the overhigh negative pressure.
Optionally, an ink locking valve 31 is further included, the ink locking valve 31 is disposed between the circulating ink bottle 3 and the head 2, an ink inlet of the ink locking valve 31 is connected with an ink outlet of the head 2, and an ink outlet of the ink locking valve 31 is connected with an ink inlet of the circulating ink bottle 3. When the ink-pressing processing spray head 2 is needed, the ink locking valve 31 is closed. When the ink pressure of the nozzle 2 is not needed, the ink locking valve 31 is opened, and the ink in the nozzle 2 flows into the circulating ink bottle 3 and returns to the ink inlet bottle 1 due to the negative pressure of the air pressure in the circulating ink bottle 3, so that the circulating purpose is achieved.
Specifically, the ink bottle further comprises a positive pressure adjusting device and a positive pressure pump, wherein the positive pressure adjusting device comprises a positive pressure two-way valve 71, a positive pressure output port of the positive pressure pump is connected with one end of the positive pressure two-way valve 71, and the other end of the positive pressure two-way valve 71 is connected with a positive pressure input port of the ink inlet bottle 1. When the ink needs to be pressed by positive pressure, the positive pressure pump is opened, the positive pressure two-way valve 71 is opened, and then the ink locking valve 31 is closed, so that the ink can be sprayed from the spray head 2 to the surface of the textile fabric by the positive pressure.
Preferably, the positive pressure adjusting device further comprises a positive pressure regulating valve 72, the positive pressure regulating valve 72 is arranged between the positive pressure pump and the positive pressure adjusting device, a pressure regulating input end of the positive pressure regulating valve 72 is connected with a positive pressure output port of the positive pressure pump, and a pressure regulating output end of the positive pressure regulating valve 72 is connected with one end of the positive pressure two-way valve 71. The positive pressure regulating valve 72 is used for regulating the pressure entering the positive pressure two-way valve 71, so as to avoid damage to the spray head 2 due to overhigh pressure.
In some embodiments, the positive pressure adjusting device further includes a positive pressure relief valve 73, a pressure relief input end of the positive pressure relief valve 73 is connected to the positive pressure output port of the ink bottle 1, and a pressure relief output end of the positive pressure relief valve 73 is communicated with the outside. When printing is not needed, the positive pressure pump is closed, the positive pressure two-way valve 71 is closed, the positive pressure relief valve 73 is opened, and high-pressure gas in the ink inlet bottle 1 can be discharged to the outside from the positive pressure relief valve 73, so that the air pressure in the ink inlet bottle 1 is reduced.
It is worth to say that the high-frequency pressure relief valve further comprises a first filter 8 and a second filter 9, the negative pressure input port of the negative pressure source 5 is connected with the outside through the first filter 8, and the pressure relief input end of the high-frequency pressure relief valve 62 is communicated with the outside through the second filter 9. The negative pressure source 5 pumps the gas in the air passage to the outside, and because the gas in the air passage is easy to carry ink droplets, the first filter 8 connected with the negative pressure input port of the negative pressure source is used for filtering the ink droplets carried in the gas discharged from the negative pressure source 5, so that the ink droplets are prevented from polluting the environment. The high-frequency pressure relief valve 62 sends external high-pressure gas into the buffer 64 to achieve the purpose of adjusting negative pressure, and the second filter 9 connected with the high-frequency pressure relief valve 62 plays a role in filtering external dust.
Other configurations and operations of the negative pressure adjusting device of the digital printing ink supply system according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The utility model provides a negative pressure adjusting device of digital printing ink supply system, includes into china ink bottle, shower nozzle, circulation china ink bottle, buffer and negative pressure source, its characterized in that:
the nozzle is provided with an ink inlet and a circulating ink outlet, the ink outlet of the ink inlet bottle is connected with the ink inlet of the nozzle, the ink inlet of the circulating ink bottle is connected with the circulating ink outlet of the nozzle, and the ink outlet of the circulating ink bottle is connected with the ink inlet bottle;
still include negative pressure adjusting device, the negative pressure source passes through negative pressure adjusting device with the negative pressure input port of circulation ink bottle is connected, negative pressure adjusting device includes high frequency two-way valve, high frequency relief valve and buffer, the negative pressure delivery outlet of negative pressure source with the one end of high frequency two-way valve is connected, the other end of high frequency two-way valve with the negative pressure input port of buffer is connected, the negative pressure delivery outlet of buffer with the negative pressure input port of circulation ink bottle is connected, the pressure release output of high frequency relief valve with the negative pressure input port of buffer is connected, the pressure release input of high frequency relief valve communicates with the external world.
2. The negative pressure adjusting device of a digital printing ink supply system according to claim 1, wherein: the ink bottle is characterized by further comprising a degassing lung, the degassing lung is arranged between the ink inlet bottle and the spray head, an ink inlet of the degassing lung is connected with an ink outlet of the ink inlet bottle, and an ink outlet of the degassing lung is connected with an ink inlet of the spray head;
the degassing lung is provided with a negative pressure input port, and the negative pressure input port of the degassing lung is connected with a negative pressure output port of the negative pressure source.
3. The negative pressure adjusting device of a digital printing ink supply system according to claim 2, wherein: the negative pressure adjusting device further comprises a negative pressure regulating valve, a pressure regulating input end of the negative pressure regulating valve is connected with a negative pressure output port of the negative pressure source, and a pressure regulating output end of the negative pressure regulating valve is connected with one end of the high-frequency two-way valve.
4. The negative pressure adjusting device of a digital printing ink supply system according to claim 1, wherein: the ink bottle is characterized by further comprising an ink locking valve, the ink locking valve is arranged between the circulating ink bottle and the spray head, an ink inlet of the ink locking valve is connected with an ink outlet of the spray head, and an ink outlet of the ink locking valve is connected with an ink inlet of the circulating ink bottle.
5. The negative pressure adjusting device of a digital printing ink supply system according to claim 1, wherein: the ink bottle positive pressure regulating device comprises a positive pressure two-way valve, a positive pressure output port of the positive pressure two-way valve is connected with one end of the positive pressure two-way valve, and the other end of the positive pressure two-way valve is connected with a positive pressure input port of the ink bottle.
6. The negative pressure adjusting device of a digital printing ink supply system according to claim 5, wherein: the positive pressure adjusting device further comprises a positive pressure air-vent valve, the positive pressure air-vent valve is arranged between the positive pressure pump and the positive pressure adjusting device, the pressure regulating input end of the positive pressure air-vent valve is connected with the positive pressure output port of the positive pressure pump, and the pressure regulating output end of the positive pressure air-vent valve is connected with one end of the positive pressure two-way valve.
7. The negative pressure adjusting device of a digital printing ink supply system according to claim 5, wherein: the positive pressure adjusting device further comprises a positive pressure relief valve, the pressure relief input end of the positive pressure relief valve is connected with the positive pressure output port of the ink inlet bottle, and the pressure relief output end of the positive pressure relief valve is communicated with the outside.
8. The negative pressure adjusting device of a digital printing ink supply system according to claim 1, wherein: the high-frequency pressure relief valve is characterized by further comprising a first filter and a second filter, wherein a negative pressure input port of the negative pressure source is connected with the outside through the first filter, and a pressure relief input end of the high-frequency pressure relief valve is communicated with the outside through the second filter.
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| CN202123318658.1U CN216659326U (en) | 2021-12-24 | 2021-12-24 | Negative pressure adjusting device of digital printing ink supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384194A (en) * | 2022-10-31 | 2022-11-25 | 季华实验室 | Ink filter device of printer and printer |
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2021
- 2021-12-24 CN CN202123318658.1U patent/CN216659326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384194A (en) * | 2022-10-31 | 2022-11-25 | 季华实验室 | Ink filter device of printer and printer |
| CN115384194B (en) * | 2022-10-31 | 2022-12-23 | 季华实验室 | Ink filtering device of printer and printer |
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