Active ink negative pressure filtering system

Abstract

The utility model provides an active ink negative pressure filtering system which comprises a filtering device and a liquid storage tank, the filtering device is communicated with the liquid storage tank, a negative pressure pipe is arranged on the liquid storage tank, the filtering device comprises a funnel, a first supporting screen plate is arranged on the funnel, the first supporting screen plate is of a net structure arranged in a wire coiling mode, and a filtering membrane can be placed on the first supporting screen plate. An electric reciprocating track is arranged on one side of the funnel and extends in the length direction of the first supporting screen plate, an ink spraying pipe is arranged on the electric reciprocating track, a spraying head is arranged at one end of the ink spraying pipe and located over the first supporting screen plate, and the ink outlet end face of the spraying head faces the first supporting screen plate. The other end of the ink spraying pipe is communicated with ink to be filtered, and the ink spraying pipe can move along the electric reciprocating track. The active ink negative pressure filtering system is high in filtering efficiency, easy to operate and high in automation degree.

Description

Technical Field

[0001] This utility model relates to the field of ink filtration technology, specifically to an active ink negative pressure filtration system. Background Technology

[0002] In existing technologies, the filtration devices for reactive inks generally consist of a three-stage positive pressure filter cartridge followed by a single-stage negative pressure flat-panel membrane filter. The negative pressure flat-panel membrane device can effectively filter out physical particles and microbubbles in the ink, thus addressing issues such as stringing, pinholes, broken pinholes, and ink interruptions that occur during printing due to the inability to effectively filter gases within the ink. Current negative pressure flat-panel membrane filtration devices are constructed by connecting a flat-panel filter to a 20L suction flask that provides negative pressure and holds the ink. By applying negative pressure to the suction flask, the ink passes through the flat-panel filter and enters the suction flask, thus achieving filtration.

[0003] However, existing filtration systems have many problems. First, due to the inherent limitations of the flat plate filter's structure, the filtrate can only pass through the small round holes on the funnel, while the rest of the membrane is sealed, resulting in a small effective filtration area and a slow filtration rate. 。 Frequent membrane replacements during use reduce filtration efficiency, and each membrane replacement requires manual disassembly and reassembly of the flat-plate filter, further impacting efficiency. In addition, the low level of automation and small membrane filtration area result in limited filtration capacity, necessitating on-site monitoring and operation, increasing labor costs. Utility Model Content

[0004] The purpose of this invention is to provide an active ink negative pressure filtration system to solve the problem of low filtration efficiency in existing flat panel filters.

[0005] To achieve the purpose of this utility model, this utility model provides an active ink negative pressure filtration system, including a filtration device and a storage tank. The filtration device is connected to the storage tank, and a negative pressure pipe is provided on the storage tank. The filtration device includes a funnel, and a first support mesh plate is provided on the funnel. The first support mesh plate has a mesh structure with coiled wires, and a filter membrane can be placed on the first support mesh plate. An electric reciprocating track is provided on one side of the funnel, and the electric reciprocating track extends along the length direction of the first support mesh plate. An ink spraying tube is provided on the electric reciprocating track, and a spray head is provided at one end of the ink spraying tube. The spray head is located directly above the first support mesh plate, and the ink-emitting end of the spray head faces the first support mesh plate. The other end of the ink spraying tube is connected to the ink to be filtered, and the ink spraying tube can move along the electric reciprocating track.

[0006] As can be seen from the above scheme, the filter membrane of this utility model can be placed flat on the first supporting mesh plate, with few restrictions on the shape and size of the filter membrane, and rectangular filter membranes can be placed as needed. Since the filter membrane is a roll material, setting the mesh plate to a rectangular shape can reduce the scrap material generated during the cutting process. The first support mesh plate has a coiled mesh structure, which acts as a buffer during the negative pressure process, allowing the filter membrane to lie flat on the surface of the mesh plate. This prevents the filter paper from being deformed or damaged, avoiding waste of filtration area. Since the filter membrane is placed on the surface, replacing it does not require disassembling any parts of the filtration equipment. Simply lift the old filter membrane, align it with the new one, and start filtration again. This reduces the operator's workload and improves filtration efficiency. Furthermore, no ink is wasted during filter membrane replacement, reducing filtration costs. The system also features an electric reciprocating track, resulting in a high degree of automation. The liquid storage tank is directly connected to the filtration equipment, increasing the amount of ink that can be filtered. It eliminates the need for constant operator supervision, further reducing workload. The coiled mesh structure of the first support mesh plate ensures that the filter membrane lies flat and is not easily damaged, while also preventing the membrane from sagging and reducing the filtration area.

[0007] A further proposed solution is to install a second support mesh plate below the first support mesh plate, and the second support mesh plate has several through holes.

[0008] As can be seen from the above scheme, the setting of the second support screen increases the support force on the filter membrane, and the through holes on the second support screen facilitate ink discharge.

[0009] A further solution is to install suspension points on the first support mesh plate.

[0010] As can be seen from the above scheme, the setting of the lifting points facilitates the disassembly of the first support mesh plate and the cleaning of the first support mesh plate.

[0011] A further solution is to have several spray holes on the spray head.

[0012] As can be seen from the above scheme, the setting of multiple spray holes allows the ink to be sprayed more evenly on the filter membrane, further improving the ink filtration efficiency.

[0013] A further option is to connect the filtration equipment and the storage tank via a first delivery hose, which is equipped with a control valve and is connected to the bottom of the storage tank.

[0014] As can be seen from the above solution, the filtration equipment and the storage tank can be easily connected through the delivery hose, and the stability of the connection is also guaranteed.

[0015] A further proposed solution is to install a negative pressure pipe at the top of the storage tank, while the top of the storage tank is also equipped with a positive pressure pipe, a vent, and a water inlet.

[0016] As can be seen from the above scheme, the above structure avoids the safety hazards caused by damage to the liquid storage tank during the application of negative pressure.

[0017] A further design is to make the lower half of the funnel conical.

[0018] As can be seen from the above scheme, the conical structure facilitates the complete discharge of ink.

[0019] A further solution is to connect the ink spray tube to the ink to be filtered through a second delivery hose, which is equipped with an electromagnetic pump.

[0020] As can be seen from the above solutions, electromagnetic pumps can better control the flow rate and prevent ink overflow during the filtration process.

[0021] A further option is that the filtration equipment also includes a support frame, with the funnel and electric reciprocating track all mounted on the support frame, which also has a control panel; the bottom of the storage tank is also equipped with several support feet.

[0022] As can be seen from the above scheme, the bracket and support feet provide good support, and the control panel is responsible for controlling the main power supply, equipment start and stop, and the individual start and stop of the electromagnetic pump, making it more convenient for staff to operate.

[0023] A further option is that the filtration device includes no less than two first support screens and ink spray tubes, with the first support screens and ink spray tubes arranged in a one-to-one correspondence, and multiple first support screens arranged side by side along the width or length direction of the first support screens.

[0024] As can be seen from the above scheme, the arrangement of multiple first support screens and ink spray tubes can further improve filtration efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the active ink negative pressure filtration system of this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the first supporting mesh plate in this utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the second support mesh plate in this utility model.

[0028] Figure 4 This is a schematic diagram of the ink spray tube in this utility model.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0030] See Figures 1 to 4The active ink negative pressure filtration system provided in this embodiment includes a filtration device 1 and a storage tank 2, with the filtration device 1 connected to the storage tank 2.

[0031] The filtration device 1 includes a support 16, on which a funnel 15, an electric reciprocating track 11 and a control panel 13 are provided. The electric reciprocating track 11 is located on one side of the funnel 15.

[0032] The funnel 15 is equipped with a first support mesh plate 14 and a second support mesh plate 17, with the first support mesh plate 14 positioned above the second support mesh plate 17. The first support mesh plate 14 has a coiled mesh structure and is equipped with hanging points 141 for easy disassembly and cleaning. The second support mesh plate 17 has several through holes 171 for easy ink drainage. Both the first and second support mesh plates 14 and 17 are made of stainless steel. A filter membrane can be placed on the first support mesh plate 14. Both mesh plates are thickened so that when a filter membrane is placed on the first support mesh plate 14, it can adhere smoothly without damage when negative pressure is applied. The lower half of the funnel 15 is conical to facilitate ink drainage.

[0033] An electrically operated reciprocating track 11 extends along the length of the first support mesh plate 14. An ink spraying tube 12 is mounted on the track 11. One end of the ink spraying tube 12 is equipped with a spray head 121, which is located directly above the first support mesh plate 14, with the ink-emitting end of the spray head 121 facing the first support mesh plate 14. The other end of the ink spraying tube 12 is connected to the ink to be filtered; specifically, the other end of the ink spraying tube 12 can be connected to an ink storage tank containing the ink to be processed. The ink spraying tube 12 can move along the electrically operated reciprocating track. The side of the spray head 121 facing the first support mesh plate 14 has several spray holes 122. The arrangement of multiple spray holes 122 allows the ink to be sprayed more evenly onto the filter membrane, further improving the ink filtration efficiency.

[0034] The top of the storage tank 2 is equipped with an observation window 21, a water inlet 22, a positive pressure pipe 23, and a negative pressure pipe 24. The above structure ensures the negative pressure filtration and avoids damage to the storage tank 2 and potential safety hazards during the application of negative pressure. The bottom of the storage tank 2 is equipped with several support feet 26, which provide good support for the storage tank 2.

[0035] The filter device 1 and the storage tank 2 are connected by a first delivery hose 25. A control valve 27 is installed on the first delivery hose 25, and the first delivery hose 25 is connected to the bottom of the storage tank 2.

[0036] The ink spray tube 12 is connected to the ink to be filtered through the second delivery hose 4, facilitating the reciprocating movement of the ink spray tube 12. An electromagnetic pump 3 is installed on the second delivery hose 4. In this embodiment, the ink spray tube 12 is connected to the infusion tube 5 via a chuck 6, and the infusion tube 5 is connected to the electromagnetic pump 3, resulting in a tighter connection.

[0037] Control panel 13 controls the main power supply, equipment start / stop, and individual start / stop of the electromagnetic pump, making it more convenient for staff to operate.

[0038] To further improve filtration efficiency, the filtration device 1 includes at least two first support screens 14 and ink spray tubes 12, with each first support screen 14 and ink spray tube 12 arranged in a one-to-one correspondence. Multiple first support screens 14 are arranged side by side along the width direction of the first support screens 14. The number of first support screens 14 and ink spray tubes 12 can be determined according to actual production needs.

[0039] The working principle of the active ink negative pressure filtration system in this embodiment is as follows: The control panel 13 sets the parameters and starts filtration. The ink to be filtered is drawn into the ink spraying pipe 12 by the electromagnetic pump 3. The ink spraying pipe 12 moves back and forth at a constant speed along the electric reciprocating track 11, spraying ink onto the first support mesh plate 14. The filter membrane is placed on the first support mesh plate 14. The storage tank 2 is connected to negative pressure. Under the action of negative pressure, the ink passes through the filter membrane, the first support mesh plate 14, and the second support mesh plate 17 into the storage tank 2, realizing the entire process of membrane filtration. When the filter membrane reaches the end of its lifespan, the operator only needs to lift the old filter membrane, align it, and place the new filter membrane on the first support mesh plate 14. Under the action of negative pressure, the filter membrane automatically adheres and flattens, allowing filtration to continue.

[0040] In this embodiment, the filter membrane can be placed flat on the first support mesh plate 14, with minimal restrictions on the shape and size of the filter membrane. Various shapes of filter membranes can be placed as needed, avoiding waste of filtration area. Since the filter membrane is placed on the surface, replacing it does not require disassembling any parts of the filtration equipment; simply lift the old filter membrane, align it with the new one, and restart the filtration process. This reduces operator workload and improves filtration efficiency. Furthermore, no ink is lost during filter membrane replacement, reducing filtration costs. The electric reciprocating track 11 provides a high degree of automation. The liquid storage tank 2 is directly connected to the filtration equipment 1, increasing the amount of ink that can be filtered. Constant operator supervision is not required, further reducing workload. The first support mesh plate 14 has a coiled mesh structure, ensuring the filter membrane remains flat and is not easily damaged, while also preventing it from sagging and reducing the filtration area. In a comparison with actual production processes, the original process had a filtration area of ​​0.07 m². 2 The filtration area of ​​the active ink negative pressure filtration system in this embodiment is 0.35m². 2The filtration area is five times that of the original process. In actual production, the filtration speed of the original process is about 50 kg / H, while the filtration speed of the active ink negative pressure filtration system in this embodiment is about 200 kg / H, which improves the filtration efficiency by four times.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An active ink negative pressure filtration system, comprising a filtration device and a storage tank, wherein the filtration device is connected to the storage tank, and a negative pressure pipe is provided on the storage tank, characterized in that: The filtration device includes a funnel, on which a first support mesh plate is provided. The first support mesh plate has a mesh structure arranged in a coiled wire pattern, and a filter membrane can be placed on the first support mesh plate. A motorized reciprocating track is provided on one side of the funnel. The motorized reciprocating track extends along the length of the first support mesh plate. An ink spraying tube is provided on the motorized reciprocating track. A spray head is provided at one end of the ink spraying tube. The spray head is located directly above the first support mesh plate, and the ink-emitting end of the spray head faces the first support mesh plate. The other end of the ink spraying tube is connected to an ink storage tank containing ink to be filtered. The ink spraying tube can move along the motorized reciprocating track. The first support mesh plate is provided with lifting points; The ink spraying tube is connected to the ink to be filtered through a second delivery hose, and an electromagnetic pump is installed on the second delivery hose.

2. The active ink negative pressure filtration system as described in claim 1, characterized in that: A second support mesh plate is provided below the first support mesh plate, and the second support mesh plate is provided with several through holes.

3. The active ink negative pressure filtration system as described in claim 1, characterized in that: The spray head is provided with several spray holes.

4. An active ink negative pressure filtration system as described in any one of claims 1 to 3, characterized in that: The filtration device and the storage tank are connected by a first delivery hose, which is equipped with a control valve and is connected to the bottom of the storage tank.

5. An active ink negative pressure filtration system as described in any one of claims 1 to 3, characterized in that: The negative pressure pipe is located at the top of the liquid storage tank, and the top of the liquid storage tank is also provided with a positive pressure pipe, a vent, and a water inlet.

6. An active ink negative pressure filtration system as described in any one of claims 1 to 3, characterized in that: The lower half of the funnel is cone-shaped.

7. An active ink negative pressure filtration system as described in any one of claims 1 to 3, characterized in that: The filtration device also includes a support frame, on which the funnel and the electric reciprocating track are both mounted, and on which a control panel is also mounted; The bottom of the storage tank is also equipped with several support feet.

8. An active ink negative pressure filtration system as described in any one of claims 1 to 3, characterized in that: The filtration device includes at least two first support mesh plates and the ink spraying tube, with the first support mesh plates and the ink spraying tubes arranged in a one-to-one correspondence, and multiple first support mesh plates arranged side by side.

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