Ink separating device and ink-jet printing equipment with same

Abstract

The utility model relates to an ink separating device and ink-jet printing equipment with the same, the ink separating device comprises an air inlet, an air outlet, an ink confluence cavity and a separating and filtering cavity, the ink confluence cavity is sequentially connected with the separating and filtering cavity along the direction from the air inlet to the air outlet, and the separating and filtering cavity is communicated with the air outlet. The area of the section, in the direction perpendicular to the axis of the air inlet, of the air inlet is smaller than the area of the section, in the direction, of the ink confluence cavity, and a filtering device for filtering ink is arranged in the separating and filtering cavity. The ink separating device can well separate ink from air flow, prevent environment pollution and prevent the vacuum generating device from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of printing inkjet, in particular to an ink separation device and a printing inkjet printing device with the same. Background Art

[0002] In order to ensure the normal operation of a printing inkjet printing device, generally, its print head needs to be cleaned. When cleaning the print head of a printing inkjet printing device, in order to improve the stability and reliability of the print head, most of them adopt the self-cleaning method of the print head for maintenance, so that the print head reaches a stable state for operation.

[0003] In the prior art, when performing self-cleaning maintenance on the print head, its general form is to press out the ink inside the print head and use the vacuum suction method to suck out the ink residue on the surface of the print head, so as to achieve the purpose of self-cleaning maintenance of the print head.

[0004] In the process of realizing the self-cleaning maintenance of the print head by the vacuum suction method, generally, a vacuum generating device, such as a vacuum pump, is used to evacuate the air on the surface of the print head. During the process of evacuating the air, the ink will be carried away by the airflow generated during suction. In the subsequent steps, it is necessary to separate the ink from the airflow. However, in the existing industry, there is a common phenomenon that during the separation process, the ink cannot be separated well from the airflow, resulting in ink overflow and environmental pollution or damage to the vacuum generating device. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides an ink separation device and a printing inkjet printing device with the same. The ink separation device can separate the ink from the airflow well, prevent environmental pollution, and prevent damage to the vacuum generating device.

[0006] The utility model provides an ink separation device, which includes an air inlet, an air outlet, an ink confluence chamber and a separation and filtration chamber. Along the direction from the air inlet to the air outlet, the ink confluence chamber and the separation and filtration chamber are connected in sequence. The area of the cross-section of the air inlet along the direction perpendicular to the axis of the air inlet is smaller than the area of the cross-section of the ink confluence chamber in this direction. A filtration device for filtering ink is arranged in the separation and filtration chamber.

[0007] Further, a guiding tube is arranged in the ink confluence chamber. One end of the guiding tube is connected to the air inlet and extends downward, and the opening of the other end faces the bottom plate of the ink confluence chamber.

[0008] Further, a liquid level gauge for detecting the liquid level of the ink accumulated in the ink confluence chamber is also arranged in the ink confluence chamber.

[0009] Further, a vacuum gauge for detecting the vacuum degree in the ink confluence chamber is also provided in the ink confluence chamber.

[0010] Further, the ink separation device includes a housing and a cover plate. The cover plate is covered on the housing, and the ink confluence chamber is jointly formed by the housing and the cover plate. A gasket is provided between the housing and the cover plate.

[0011] Further, the separation and filtration chamber is detachably arranged on the side wall of the ink confluence chamber.

[0012] Further, the air inlet and the communication port between the separation and filtration chamber and the ink confluence chamber are both located at the top of the ink confluence chamber, and the air inlet and the communication port are respectively located on both sides of the top of the ink confluence chamber.

[0013] Further, the filtering device is a multi-layer filter screen. Along the direction from the communication port between the separation and filtration chamber and the ink confluence chamber to the air outlet, the multi-layer filter screens are stacked, and between adjacent two layers of filter screens, the mesh holes of the filter screens are arranged staggeredly.

[0014] Further, a first partition plate and a second partition plate are arranged in the ink confluence chamber. One end of the first partition plate is connected to the top of the ink confluence chamber and extends towards the bottom of the ink confluence chamber. One end of the second partition plate is connected to the bottom of the ink confluence chamber and extends towards the top of the ink confluence chamber. The first partition plate and the second partition plate are arranged at intervals to form a meandering airflow channel in the ink confluence chamber.

[0015] The present invention also provides a printing inkjet printing device, including the above-mentioned ink separation device.

[0016] In summary, in the present invention, when the airflow enters the ink confluence chamber through the air inlet, due to the sudden increase in the cross-sectional area perpendicular to the airflow direction, the flow velocity of the airflow will decrease. The ink carried in the airflow will fall to the bottom of the ink confluence chamber due to gravity to complete the preliminary separation of the airflow and the ink. When the airflow enters the separation and filtration chamber, due to the existence of the filtering device, the filtering device can further filter the ink. At this time, the ink in the airflow flowing out from the air outlet can be better separated, preventing environmental pollution and preventing damage to the vacuum generating device.

[0017] Further, through the setting of the guiding pipe and the opening direction of the guiding pipe, the airflow can directly impact the bottom plate of the ink confluence chamber, making the ink adhere to the bottom plate of the ink confluence chamber, which is more conducive to the separation of the airflow and the ink.

[0018] The above description is only an overview of the technical solution of the present utility model. In order to be able to more clearly understand the technical means of the present utility model, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings as follows. Brief Description of the Drawings

[0019] Figure 1 Shown is an axonometric structural schematic diagram of an ink separation device provided by the first embodiment of the present utility model.

[0020] Figure 2 Shown as Figure 1 the side view structural schematic diagram of the ink separation device in

[0021] Figure 3 Shown as Figure 2 the cross-sectional structural schematic diagram in the III-III direction in

[0022] Figure 4 Shown is a cross-sectional structural schematic diagram of an ink separation device provided by the second embodiment of the present utility model. Detailed Description of the Embodiments

[0023] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following is described in detail in conjunction with the accompanying drawings and specific preferred embodiments as follows.

[0024] The present utility model provides an ink separation device and a printing inkjet printing device having the same. The ink separation device can preferably separate ink from the air flow, prevent environmental pollution, and prevent damage to the vacuum generating device.

[0025] Figure 1 Shown is an axonometric structural schematic diagram of an ink separation device provided by the first embodiment of the present utility model, Figure 2 Shown as Figure 1 the side view structural schematic diagram of the ink separation device in Figure 3 Shown as Figure 2 the cross-sectional structural schematic diagram in the III-III direction in. As Figures 1 to 3 shown, the ink separation device provided by the first embodiment of the present utility model includes an air inlet 11, an air outlet 12, an ink confluence chamber 20, and a separation and filtration chamber 30. Along the direction from the air inlet 11 to the air outlet 12, the ink confluence chamber 20 and the separation and filtration chamber 30 are connected in sequence. The area of the cross-section of the air inlet 11 along the direction perpendicular to the axis of the air inlet 11, that is, perpendicular to the traveling direction of the air flow in the air inlet 11, is smaller than the area of the cross-section of the ink confluence chamber 20 in this direction. In other words, the cross-sectional area of the air flow from the air inlet 11 to the ink confluence chamber 20 increases. A filtration device 31 for filtering ink is provided in the separation and filtration chamber 30.

[0026] When cleaning the nozzle of an inkjet printer by means of vacuum suction, the air inlet 11 can be connected to the cleaning device of the nozzle (not shown in the figure), and then the air outlet 12 can be connected to a vacuum generating device (not shown in the figure), such as a vacuum pump. With the start of the vacuum pump, air flow will enter the ink manifold chamber 20 from the air inlet 11, and thereby pass through the ink manifold chamber 20 and the separation and filtration chamber 30, and flow out from the air outlet 12.

[0027] When the air flow enters the ink manifold chamber 20 through the air inlet 11, due to the sudden increase in the cross-sectional area along the direction perpendicular to the air flow direction, the flow rate of the air flow will decrease. The ink entrained in the air flow will fall to the bottom of the ink manifold chamber 20 due to gravity to complete the preliminary separation of the air flow and the ink; when the air flow enters the separation and filtration chamber 30, due to the presence of the filtering device 31, the filtering device 31 can further filter the ink. At this time, the ink in the air flow flowing out from the air outlet 12 can be better separated, preventing environmental pollution and preventing damage to the vacuum generating device.

[0028] Furthermore, in this embodiment, a guiding tube 21 is further provided in the ink manifold chamber 20. One end of the guiding tube 21 is connected to the air inlet 11 and extends downward, and the opening of the other end faces the bottom plate of the ink manifold chamber 20. Preferably, the axis of the guiding tube 21 is perpendicular to the bottom plate of the ink manifold chamber 20.

[0029] In this embodiment, through the arrangement of the guiding tube 21, the air flow entering the ink manifold chamber 20 from the air inlet 11 will directly jet onto the bottom plate of the ink manifold chamber 20. Due to the relatively high viscosity of the ink itself, under the drive of the high-speed air flow, the ink will directly adhere to the bottom plate of the ink manifold chamber 20 to further separate the air flow and the ink.

[0030] Please continue to refer to Figure 1 and Figure 2 , a liquid discharge port 22 is further provided in the ink manifold chamber 20 to discharge the ink accumulated in the ink manifold chamber 20.

[0031] Furthermore, a liquid level gauge 23 for detecting the liquid level of the ink accumulated in the ink manifold chamber 20 and a vacuum gauge 24 for detecting the vacuum degree in the ink manifold chamber 20 are further provided in the ink manifold chamber 20.

[0032] Specifically, the liquid level gauge 23 can include a guide post 231 and a floating ring 232 sleeved outside the guide post 231. The vacuum gauge 24 can be fixed on the outer side wall of the ink manifold chamber 20 and extend into the ink manifold chamber 20.

[0033] In this embodiment, the ink separation device includes a housing 251 and a cover plate 252. The cover plate 252 is disposed on the housing 251. The above-mentioned ink confluence chamber 20 is jointly formed by the housing 251 and the cover plate 252. In order to improve the sealing performance, a sealing gasket (not shown in the figure) is provided between the cover plate 252 and the housing 251. The above-mentioned liquid level gauge 23 and vacuum gauge 24 are both disposed on the cover plate 252.

[0034] Please continue to refer to Figure 1 and Figure 3 , the separation and filtration chamber 30 is detachably disposed on the side wall of the ink confluence chamber 20 to facilitate the replacement or cleaning of the filtration device 31 in the separation and filtration chamber 30.

[0035] In this embodiment, the air inlet 11 and the communication port 26 between the separation and filtration chamber 30 and the ink confluence chamber 20 are both located at the top of the ink confluence chamber 20. The air inlet 11 and the communication port 26 between the separation and filtration chamber 30 and the ink confluence chamber 20 are respectively located on both sides of the top of the ink confluence chamber 20, so as to facilitate the full flow of the air flow in the ink confluence chamber 20, so that more ink remains in the ink confluence chamber 20.

[0036] In this embodiment, the filtration device 31 can be a multi-layer filter screen. Along the direction from the communication port 26 between the separation and filtration chamber 30 and the ink confluence chamber 20 to the air outlet 12, the multi-layer filter screens are stacked, and between adjacent two filter screens, the mesh holes of the filter screens are staggered.

[0037] Furthermore, an observation tube 32 made of a transparent material is further disposed on the air outlet 12, so as to facilitate observing the separation condition of the ink and the air flow and the condition of the filter screen through the observation tube 32. When the inner wall of the observation tube 32 turns black, it indicates that there is ink adhesion, that is, the effect of the ink separation device in separating the ink is reduced, and it is necessary to check the condition of the filter screen or other devices.

[0038] Figure 4 The figure shows a cross-sectional structural schematic diagram of the ink separation device provided by the second embodiment of the present invention. As Figure 4 shown, the ink separation device provided by the second embodiment of the present invention is basically the same as the first embodiment. The difference is that in this embodiment, a first partition plate 271 and a second partition plate 272 are disposed in the ink confluence chamber 20. One end of the first partition plate 271 is connected to the top of the ink confluence chamber 20 and extends towards the bottom of the ink confluence chamber 20; one end of the second partition plate 272 is connected to the bottom of the ink confluence chamber 20 and extends towards the top of the ink confluence chamber 20. The first partition plate 271 and the second partition plate 272 are spaced apart to form a meandering air flow channel in the ink confluence chamber 20.

[0039] It should be noted that Figure 4The case where neither the first partition plate 271 nor the second partition plate 272 is present is shown. In other embodiments, the first partition plate 271 and the second partition plate 272 may also be multiple.

[0040] Through the above setting of the flow channels, the flow time of the air flow can be extended. At the same time, when the air flow impacts the side walls of the first partition plate 271 and the second partition plate 272, the ink adheres to the side walls of the first partition plate 271 and the second partition plate 272, and flows downward to the bottom plate of the ink confluence chamber 20 under the action of gravity.

[0041] Further, a liquid discharge flow channel (not shown in the figure) is recessed on the bottom plate, and the liquid discharge flow channel is connected to the liquid discharge port 22 to facilitate the discharge of the liquid. By setting the liquid discharge flow channel in a recessed form, on the one hand, the flow of the air flow in the flow channel can be reduced, and on the other hand, after the ink accumulates in the ink confluence chamber 20, the ink will submerge the liquid discharge flow channel to further reduce the flow of the air flow through the liquid discharge flow channel.

[0042] In summary, in the present utility model, when the air flow enters the ink confluence chamber 20 through the air inlet 11, due to the sudden increase in the cross-sectional area perpendicular to the air flow direction, the flow velocity of the air flow will decrease. The ink entrained in the air flow will fall to the bottom of the ink confluence chamber 20 due to gravity to complete the preliminary separation of the air flow and the ink; when the air flow enters the separation and filtration chamber 30, due to the presence of the filtration device 31, the filtration device 31 can further filter the ink. At this time, the ink in the air flow flowing out from the air outlet 12 can be better separated, preventing environmental pollution and damage to the vacuum generating device.

[0043] Further, through the setting of the guiding tube 21 and the opening direction of the guiding tube 21, the air flow can directly impact the bottom plate of the ink confluence chamber 20, so that the ink adheres to the bottom plate of the ink confluence chamber 20, which is more conducive to the separation of the air flow and the ink.

[0044] The present utility model also provides a printing inkjet printing device, including the above ink separation device. For other technical features of the printing inkjet printing device, please refer to the prior art and will not be elaborated here.

[0045] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An ink separation device, characterized in that: It includes an air inlet, an air outlet, an ink confluence chamber and a separation filter chamber. Along the direction from the air inlet to the air outlet, the ink confluence chamber and the separation filter chamber are connected in sequence. The cross-sectional area of ​​the air inlet along the axial direction perpendicular to the air inlet is smaller than the cross-sectional area of ​​the ink confluence chamber in this direction. A filtering device for filtering ink is arranged in the separation filter chamber.

2. The ink separation device according to claim 1, characterized in that: A guide tube is arranged in the ink confluence cavity, one end of the guide tube is connected to the air inlet and extends downward, and the opening of the other end faces the bottom plate of the ink confluence cavity.

3. The ink separation device according to claim 1, characterized in that: A liquid level meter for detecting the liquid level of the ink accumulated in the ink confluence cavity is also arranged in the ink confluence cavity.

4. The ink separation device according to claim 1, characterized in that: A vacuum gauge for detecting the vacuum degree in the ink confluence cavity is also arranged in the ink confluence cavity.

5. The ink separation device according to claim 1, characterized in that: The ink separation device comprises a shell and a cover plate, wherein the cover plate is disposed on the shell, the ink confluence cavity is formed by the shell and the cover plate, and a sealing gasket is disposed between the shell and the cover plate.

6. The ink separation device according to claim 1, characterized in that: The separation filter chamber is detachably arranged on the side wall of the ink confluence chamber.

7. The ink separation device according to claim 1, characterized in that: The air inlet and the connecting port between the separation filter chamber and the ink confluence chamber are both located at the top of the ink confluence chamber, and the air inlet and the connecting port are respectively located at two sides of the top of the ink confluence chamber.

8. The ink separation device according to claim 1, characterized in that: The filtering device is a multi-layer filter screen, and the multi-layer filter screen is stacked along the connecting port between the separation filter cavity and the ink confluence cavity to the air outlet. The mesh holes of the filter screen are staggered between two adjacent layers of the filter screen.

9. The ink separation device according to claim 1, characterized in that: A first partition and a second partition are arranged in the ink confluence chamber, one end of the first partition is connected to the top of the ink confluence chamber and extends to the bottom of the ink confluence chamber, one end of the second partition is connected to the bottom of the ink confluence chamber and extends to the top of the ink confluence chamber, and the first partition and the second partition are spaced apart to form a winding airflow channel in the ink confluence chamber.

10. A printing inkjet printing device, characterized in that: The invention comprises the ink separation device as described in any one of claims 1 to 9.

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