An automatic ink density adjustment device for printers

Abstract

This invention relates to the technical field of printing apparatus, and in particular to an automatic ink concentration adjustment device for a printer, comprising an ink tank, an ink supply tube, a liquid level detector, and a concentration detector. The ink tank has an internal chamber, in which the liquid level detector and concentration detector are respectively installed. The ink tank is equipped with an ink supply tube, and also includes a liquid inlet assembly and a stirring assembly. The liquid inlet assembly is located at the top of the ink tank, and the stirring assembly is located within the chamber of the ink tank. The liquid inlet assembly is equipped with a filtration function and a backwashing function. The ink in the chamber is transported through the ink supply tube. The liquid level detector detects the ink level in the chamber. When the ink level is lower than the detection value of the liquid level detector, the liquid inlet assembly injects ink into the chamber. Then, the concentration detector detects the ink concentration in the chamber. When it is necessary to detect the ink concentration in the chamber, the liquid inlet assembly injects an aqueous solvent into the chamber to dilute the ink concentration.

Description

Technical Field

[0001] This invention relates to the technical field of printing apparatus, and in particular to an automatic ink density adjustment device for printers. Background Technology

[0002] Ink is an important material used in printing packaging materials. It displays patterns and text on the substrate through printing. Ink consists of main components and auxiliary components, which are uniformly mixed and repeatedly rolled to form a viscous, colloidal fluid. It is generally composed of a control box and a material tank, which facilitates the adjustment of the ink concentration.

[0003] In the prior art, patent application number 202220215905.0 discloses a printing ink concentration control device, including an ink tank, an ink mixing chamber inside the ink tank, a stirring shaft inside the ink mixing chamber, stirring blades on the stirring shaft, a rotary motor connected to the stirring shaft, a magnetic stirring base at the bottom of the ink tank, a rotor matching the magnetic stirring base at the bottom of the ink mixing chamber, and a concentration detector inside the ink mixing chamber.

[0004] During use, it was found that the ink in the above device enters the ink tank through the first pipe and the liquid inlet pipe. Impurities in the ink cause these impurities to enter the ink tank as well, which can easily cause clogging of the ink nozzles. At the same time, the impurities also affect the ink concentration. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an automatic ink concentration adjustment device for printers that filters impurities from ink and can perform backwashing.

[0006] This invention discloses an automatic ink concentration adjustment device for printers, comprising an ink tank, an ink supply tube, a liquid level detector, and a concentration detector. The ink tank has an internal chamber, in which the liquid level detector and concentration detector are respectively installed. The ink tank is equipped with an ink supply tube, and also includes a liquid inlet assembly and a stirring assembly. The liquid inlet assembly is located at the top of the ink tank, and the stirring assembly is located within the chamber. The liquid inlet assembly is used to quantitatively deliver ink and solvent into the chamber, while the stirring assembly is used to mix and stir the solvent and ink. The liquid inlet assembly is equipped with a filtration function and a backwashing function. The ink in the chamber is delivered through the ink supply tube. The liquid level detector detects the ink level in the chamber. When the ink level is lower than the detection value of the liquid level detector, the liquid inlet assembly injects ink into the chamber. The concentration detector then detects the ink concentration in the chamber. When it is necessary to detect the ink concentration in the chamber, the liquid inlet assembly injects water-soluble solvent into the chamber to dilute the ink concentration, improving convenience. The stirring assembly is then activated to mix and stir the ink and water-soluble solvent.

[0007] Preferably, the liquid inlet assembly includes an ink replenishment tank, an ink replenishment pump, a first ink replenishment pipe, a second ink replenishment pipe, an ink replenishment valve, a housing, a support frame, a solvent replenishment tank, a solvent replenishment pump, a first solvent replenishment pipe, a second solvent replenishment pipe, a solvent replenishment valve, a printhead, a filter plate, an inlet, support legs, an ink inlet pipe, an ink inlet valve, a sealing assembly, and a drain assembly. Both the ink replenishment tank and the solvent replenishment tank are mounted on top of the ink tank. Both the ink replenishment pump and the solvent replenishment pump are mounted on top of the ink tank. Multiple sets of support legs are provided at the bottom of the housing, with the bottom ends of each set of support legs connected to the top of the ink tank. The housing has an internal cavity containing a support frame. A filter plate with insertion holes is placed inside. A sealing assembly is installed at the top of the housing to secure the filter plate. The bottom of the housing connects to the top of the ink inlet pipe, the bottom of which extends into the chamber. An ink inlet valve is installed on the ink inlet pipe. The output of the ink replenishment box connects to the input of ink replenishment pipe number one. The output of ink replenishment pipe number one connects to the input of ink replenishment pump. The output of ink replenishment pump connects to the input of ink replenishment pipe number two. The output of ink replenishment pipe number two extends into the inner chamber. An ink replenishment valve is installed on ink replenishment pipe number one. The output of the solvent replenishment box connects to the input of solvent replenishment pipe number one. The output end is connected to the input end of the solvent replenishment pump, and the output end of the solvent replenishment pump is connected to the input end of the second solvent replenishment pipe. The output end of the second solvent replenishment pipe extends into the inner cavity and is equipped with a nozzle. A solvent replenishment valve is installed on the first solvent replenishment pipe. A filter plate and support frame are located between the nozzle and the output end of the second ink replenishment pipe. A drainage assembly is installed on the housing. When the level detector detects a decrease in the ink level in the chamber, the controller opens the ink replenishment valve and starts the ink replenishment pump, allowing the ink inside the ink replenishment tank to enter the inner cavity through the first and second ink replenishment pipes. After being filtered by the filter plate, the ink enters the chamber through the ink inlet pipe. After closing the ink replenishment pump and ink replenishment valve, start the solvent replenishment pump and solvent replenishment valve. This allows the water-solvent inside the solvent replenishment tank to enter the inner cavity through solvent replenishment pipes 1 and 2 and then into the chamber through the ink inlet pipe. Start the stirring assembly to mix the ink and water-solvent in the chamber. When backwashing the filter plate is required, close the ink inlet valve, open the drain assembly, and start the solvent replenishment pump and solvent replenishment valve. This allows the water-solvent to flush the filter plate from the bottom upwards, and the water-solvent also carries impurities above the filter plate out through the drain assembly, thus achieving both ink impurity filtration and filter plate backwashing.

[0008] Preferably, the stirring assembly includes a motor, a rotating shaft, a first gear, a fixed rod, a circular plate, a support arm, a rotating shaft, a second gear, an extension arm, a support rod, and a stirring blade. A motor is mounted at the top of the ink tank, and a rotating shaft is mounted at the motor's output end. The bottom end of the rotating shaft extends into the chamber and is rotatably connected to the ink tank. Two sets of fixed rods are mounted at the top of the chamber, and the bottom ends of each fixed rod are connected to the top of the first gear. The first gear is movably mounted on the outside of the rotating shaft. A circular plate is fixedly mounted on the rotating shaft, below the first gear. Multiple sets of support arms are circumferentially arranged on the outer wall of the circular plate. Each set of support arms has a rotating shaft rotatably mounted on it. A second gear is mounted at the top of each set of rotating shafts, and the multiple sets of second gears mesh with the first gear. At the bottom of each component is a set of extension arms, and at the bottom of each set of extension arms is a set of support rods. Each set of support rods is equipped with multiple sets of stirring blades. When the motor is started, the rotating shaft drives the circular plate and the multiple sets of support arms to rotate. At the same time, the first gear remains stationary with the help of the fixed rod. As the circular plate drives the multiple sets of support arms to rotate, each set of support arms drives the corresponding second gear to revolve through the rotating shaft. Since the second gear meshes with the first gear, the second gear rotates on its own axis while revolving, which in turn causes the rotating shaft to rotate on its own axis while revolving. This causes the extension arms to drive the corresponding support rods and the corresponding multiple sets of stirring blades to revolve on their own axis while revolving. The multiple sets of stirring blades work together to quickly mix and stir the ink and water solvent in the chamber.

[0009] Preferably, the sealing assembly includes threaded grooves, a sealing cap, round holes, bolts, positioning rods, and insertion rods. The top of the housing has multiple sets of threaded grooves, and the sealing cap has multiple sets of round holes. Each set of round holes contains a bolt, which is threaded into a set of threaded grooves. The bottom of the sealing cap has multiple sets of positioning rods, and each set of positioning rods has an insertion rod at its bottom, with the insertion rods interlocking with the insertion holes. When installing the filter plate, the insertion rods are inserted into their corresponding insertion holes, and then the filter plate is placed into the inner cavity. The sealing cap is then placed on top of the housing, with the multiple sets of round holes coinciding with the multiple sets of threaded grooves. Bolts are passed through a set of round holes and threaded into the threaded grooves, thus completing the seal. When there are many impurities on the filter plate and the backwashing effect is poor, the sealing cap is opened. As the sealing cap moves away from the housing, the positioning rods and insertion rods move the filter plate out of the inner cavity, improving convenience.

[0010] Preferably, the drain assembly includes a drain pipe and a drain valve. The drain pipe is located at the front end of the housing, and the drain valve is installed on the drain pipe. When the filter plate needs to be backwashed, the drain valve is opened, the water solvent enters the chamber and washes the filter plate from bottom to top, and is discharged through the drain pipe. Impurities are discharged together with the water solvent.

[0011] Preferably, it also includes a heating box, an electric heating wire, and a temperature detector. The heating box is installed on the ink supply tube, and the electric heating wire is installed inside the heating box. The temperature detector is installed on the ink supply tube. The temperature detector monitors the temperature of the ink being transported in the ink supply tube in real time. When the temperature is low, the electric heating wire is energized to heat the loose ink inside the ink supply tube. The heating box prevents the electric heating wire from being exposed, thus improving safety.

[0012] Preferably, it also includes a handle, with a handle provided at the top of the sealing cover; the staff can move the sealing cover by using the handle, improving convenience.

[0013] Preferably, it also includes a flat washer, with a set of flat washers fitted on each set of bolts; when the bolt passes through the round hole and is screwed into the threaded groove, the flat washer increases the contact area between the bolt and the sealing cap, thereby improving the installation firmness.

[0014] Preferably, it also includes a sealing gasket, with a sealing gasket provided at the bottom of the sealing cover, and the sealing cover is installed on the top of the box; the sealing gasket seals the sealing cover and the box to prevent leakage and improve the sealing performance.

[0015] Preferably, the stirring blade is set at a 45-degree angle to the horizontal plane.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the liquid inlet assembly is equipped with a filtration function and a backwashing function; the ink in the chamber is transported through the ink supply pipe; the liquid level detector detects the ink level in the chamber; when the ink level is lower than the detection value of the liquid level detector, the liquid inlet assembly injects ink into the chamber; then the concentration detector detects the concentration of ink in the chamber; when it is necessary to detect the ink concentration in the chamber, the liquid inlet assembly injects water solvent into the chamber to dilute the ink concentration in the chamber, improving convenience; and the stirring assembly is activated to mix and stir the ink and water solvent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first isometric structure of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the first exploded structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the second explosive structure of the present invention;

[0021] Figure 5 This is an enlarged structural diagram of structures such as the ink replenishment box and solvent replenishment box;

[0022] Figure 6This is an enlarged structural diagram of gears such as No. 1 and No. 2;

[0023] Figure 7 It is an enlarged structural diagram of the circular plate and support rods, etc.

[0024] Figure 8 This is an enlarged structural diagram of the sealing cover and the box body, etc.

[0025] Figure 9 This is an enlarged structural diagram of structures such as the drain pipe and filter plate;

[0026] Figure 10 yes Figure 9 A partially enlarged structural diagram of section A in the middle;

[0027] Figure 11 This is an enlarged structural diagram of the positioning rod and sealing cap, etc.

[0028] Figure 12 This is an enlarged structural diagram of the nozzle and solvent replenishment pump, etc.

[0029] Figure 13 This is an enlarged structural diagram of the ink replenishment pump and support frame, etc.

[0030] Figure 14 This is an enlarged structural diagram of the heating box and electric heating wire, etc.

[0031] Figure 15 It is an enlarged structural diagram of the rotating shaft and extension arm, etc.

[0032] Figure 16 This is an enlarged structural diagram of the No. 1 gear and the fixed rod structure.

[0033] The following labels are used in the attached diagram: 101, Ink tank; 102, Ink supply pipe; 103, Liquid level detector; 104, Concentration detector; 201, Ink replenishment tank; 202, Ink replenishment pump; 203, Ink replenishment pipe No. 1; 204, Ink replenishment pipe No. 2; 205, Ink replenishment valve; 206, Housing; 207, Support frame; 208, Solvent replenishment tank; 209, Solvent replenishment pump; 210, Solvent replenishment pipe No. 1; 211, Solvent replenishment pipe No. 2; 212, Solvent replenishment valve; 213, Printhead; 214, Filter plate; 215, Insertion port; 216, Support leg; 217, Ink inlet pipe. 218. Ink inlet valve; 301. Motor; 302. Rotating shaft; 303. Gear No. 1; 304. Fixing rod; 305. Circular plate; 306. Support arm; 307. Rotating shaft; 308. Gear No. 2; 309. Extension arm; 310. Support rod; 311. Stirring blade; 501. Threaded groove; 502. Sealing cap; 503. Circular hole; 504. Bolt; 505. Positioning rod; 506. Insert rod; 507. Handle; 508. Flat washer; 509. Sealing gasket; 601. Drain pipe; 602. Drain valve; 701. Housing; 702. Electric heating wire; 703. Temperature detector. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0035] Example 1

[0036] like Figures 1 to 16 As shown, an automatic ink concentration adjustment device for printers according to the present invention includes an ink tank 101, an ink supply tube 102, a liquid level detector 103, and a concentration detector 104. The ink tank 101 has a chamber inside, and the liquid level detector 103 and the concentration detector 104 are respectively installed in the chamber. The ink supply tube 102 is installed on the ink tank 101. It also includes a liquid inlet assembly and a stirring assembly. The liquid inlet assembly is installed at the top of the ink tank 101, and the stirring assembly is installed in the chamber of the ink tank 101. The liquid inlet assembly is used to quantitatively deliver ink and solvent into the chamber, and the stirring assembly is used to mix and stir the solvent and ink.

[0037] The liquid inlet assembly includes an ink replenishment tank 201, an ink replenishment pump 202, a first ink replenishment pipe 203, a second ink replenishment pipe 204, an ink replenishment valve 205, a housing 206, a support frame 207, a solvent replenishment tank 208, a solvent replenishment pump 209, a first solvent replenishment pipe 210, a second solvent replenishment pipe 211, a solvent replenishment valve 212, a printhead 213, a filter plate 214, an insertion port 215, a support leg 216, an ink inlet pipe 217, an ink inlet valve 218, a sealing assembly, and a drain assembly. The ink replenishment tank 201 and the solvent replenishment tank 205 are also included. All eight components are installed on the top of the ink tank 101. The ink replenishment pump 202 and solvent replenishment pump 209 are also installed on the top of the ink tank 101. Multiple sets of support legs 216 are provided at the bottom of the housing 206, with the bottom ends of each set of support legs connected to the top of the ink tank 101. The housing 206 has an internal cavity containing a support frame 207. A filter plate 214 is placed on the support frame 207, and insertion holes 215 are provided on the filter plate 214. A sealing assembly is provided at the top of the housing 206 to fix the filter plate 214. The bottom of the housing 206... The ink inlet tube 217 is connected to the top end of the ink inlet tube 217, and the bottom end of the ink inlet tube 217 extends into the chamber. An ink inlet valve 218 is installed on the ink inlet tube 217. The output end of the ink replenishment tank 201 is connected to the input end of the first ink replenishment tube 203. The output end of the first ink replenishment tube 203 is connected to the input end of the ink replenishment pump 202. The output end of the ink replenishment pump 202 is connected to the input end of the second ink replenishment tube 204. The output end of the second ink replenishment tube 204 extends into the inner chamber. An ink replenishment valve 205 is installed on the first ink replenishment tube 203. The solvent replenishment tank 201... The output end of 8 is connected to the input end of solvent replenishment pipe 210. The output end of solvent replenishment pipe 210 is connected to the input end of solvent replenishment pump 209. The output end of solvent replenishment pump 209 is connected to the input end of solvent replenishment pipe 211. The output end of solvent replenishment pipe 211 extends into the inner cavity and is equipped with a nozzle 213. A solvent replenishment valve 212 is installed on solvent replenishment pipe 210. Filter plate 214 and support frame 207 are located between nozzle 213 and the output end of ink replenishment pipe 204. Drainage assembly is installed on housing 206.

[0038] The stirring assembly includes a motor 301, a rotating shaft 302, a first gear 303, a fixed rod 304, a circular plate 305, a support arm 306, a rotating shaft 307, a second gear 308, an extension arm 309, a support rod 310, and a stirring plate 311. The motor 301 is located at the top of the ink tank 101. A rotating shaft 302 is located at the output end of the motor 301. The bottom end of the rotating shaft 302 extends into the chamber and is rotatably connected to the ink tank 101. Two sets of fixed rods 304 are located at the top of the chamber. The bottom ends of the fixed rods 304 are connected to the top of the first gear 303. The first gear 303 is movably mounted on the rotating shaft 307. On the outside of 2, a circular plate 305 is fixedly installed on the rotating shaft 302. The circular plate 305 is below the first gear 303. Multiple sets of support arms 306 are arranged circumferentially on the outer side wall of the circular plate 305. A set of rotating shafts 307 is rotatably arranged on each set of support arms 306. A set of second gears 308 is arranged at the top of each set of rotating shafts 307. Multiple sets of second gears 308 mesh with the first gear 303. An extension arm 309 is arranged at the bottom of each set of rotating shafts 307. A set of support rods 310 is arranged at the bottom of each set of extension arms 309. Multiple sets of stirring blades 311 are arranged on each set of support rods 310.When the level detector 103 detects a decrease in the ink level in the chamber, the controller opens the ink replenishment valve 205 and starts the ink replenishment pump 202. This allows ink from inside the ink replenishment tank 201 to enter the inner chamber through ink replenishment pipes 203 and 204, be filtered by filter plate 214, and then enter the chamber through ink inlet pipe 217. The controller then closes the ink replenishment pump 202 and ink replenishment valve 205. Next, the solvent replenishment pump 209 and solvent replenishment valve 212 are started, allowing water-soluble solvent from the solvent replenishment tank 208 to enter the inner chamber through solvent replenishment pipes 210 and 211, and then enter the chamber through ink inlet pipe 217. The motor 301 is then started, causing the rotating shaft 302 to drive the circular plate 305 and multiple sets of support arms 306 to rotate. Simultaneously, the first gear 303 remains stationary with the assistance of the fixed rod 304, while the circular plate 305 drives the multiple sets of support arms 306 to rotate. Each set of support arms 306 drives the corresponding second gear 308 to revolve via the rotating shaft 307. Since the second gear 308 meshes with the first gear 303, it rotates on its own axis while revolving, further causing the rotating shaft 307 to rotate on its own axis while revolving. This causes the extension arm 309 to drive the corresponding support rod 310 and the corresponding multiple sets of stirring blades 311 to rotate on their own axis while revolving. The multiple sets of stirring blades 311 work together to rapidly mix and stir the ink and water solvent in the chamber. When backwashing the filter plate 214 is required, the ink inlet valve 218 is closed, the drain assembly is opened, and the solvent replenishment pump 209 and solvent replenishment valve 212 are started. This allows the water solvent to flush the filter plate 214 upwards from the bottom, and the water solvent also carries impurities above the filter plate 214 out through the drain assembly, achieving both ink impurity filtration and backwashing of the filter plate 214.

[0039] Example 2

[0040] like Figures 1 to 16 As shown, an automatic ink concentration adjustment device for printers according to the present invention includes an ink tank 101, an ink supply tube 102, a liquid level detector 103, and a concentration detector 104. The ink tank 101 has a chamber inside, and the liquid level detector 103 and the concentration detector 104 are respectively installed in the chamber. The ink supply tube 102 is installed on the ink tank 101. It also includes a liquid inlet assembly and a stirring assembly. The liquid inlet assembly is installed at the top of the ink tank 101, and the stirring assembly is installed in the chamber of the ink tank 101. The liquid inlet assembly is used to quantitatively deliver ink and solvent into the chamber, and the stirring assembly is used to mix and stir the solvent and ink.

[0041] The liquid inlet assembly includes an ink replenishment tank 201, an ink replenishment pump 202, a first ink replenishment pipe 203, a second ink replenishment pipe 204, an ink replenishment valve 205, a housing 206, a support frame 207, a solvent replenishment tank 208, a solvent replenishment pump 209, a first solvent replenishment pipe 210, a second solvent replenishment pipe 211, a solvent replenishment valve 212, a printhead 213, a filter plate 214, an insertion port 215, a support leg 216, an ink inlet pipe 217, an ink inlet valve 218, a sealing assembly, and a drain assembly. The ink replenishment tank 201 and the solvent replenishment tank 205 are also included. All eight components are installed on the top of the ink tank 101. The ink replenishment pump 202 and solvent replenishment pump 209 are also installed on the top of the ink tank 101. Multiple sets of support legs 216 are provided at the bottom of the housing 206, with the bottom ends of each set of support legs connected to the top of the ink tank 101. The housing 206 has an internal cavity containing a support frame 207. A filter plate 214 is placed on the support frame 207, and insertion holes 215 are provided on the filter plate 214. A sealing assembly is provided at the top of the housing 206 to fix the filter plate 214. The bottom of the housing 206... The ink inlet tube 217 is connected to the top end of the ink inlet tube 217, and the bottom end of the ink inlet tube 217 extends into the chamber. An ink inlet valve 218 is installed on the ink inlet tube 217. The output end of the ink replenishment tank 201 is connected to the input end of the first ink replenishment tube 203. The output end of the first ink replenishment tube 203 is connected to the input end of the ink replenishment pump 202. The output end of the ink replenishment pump 202 is connected to the input end of the second ink replenishment tube 204. The output end of the second ink replenishment tube 204 extends into the inner chamber. An ink replenishment valve 205 is installed on the first ink replenishment tube 203. The solvent replenishment tank 201... The output end of 8 is connected to the input end of solvent replenishment pipe 210. The output end of solvent replenishment pipe 210 is connected to the input end of solvent replenishment pump 209. The output end of solvent replenishment pump 209 is connected to the input end of solvent replenishment pipe 211. The output end of solvent replenishment pipe 211 extends into the inner cavity and is equipped with a nozzle 213. A solvent replenishment valve 212 is installed on solvent replenishment pipe 210. Filter plate 214 and support frame 207 are located between nozzle 213 and the output end of ink replenishment pipe 204. Drainage assembly is installed on housing 206.

[0042] The stirring assembly includes a motor 301, a rotating shaft 302, a first gear 303, a fixed rod 304, a circular plate 305, a support arm 306, a rotating shaft 307, a second gear 308, an extension arm 309, a support rod 310, and a stirring plate 311. The motor 301 is located at the top of the ink tank 101. A rotating shaft 302 is located at the output end of the motor 301. The bottom end of the rotating shaft 302 extends into the chamber and is rotatably connected to the ink tank 101. Two sets of fixed rods 304 are located at the top of the chamber. The bottom ends of the fixed rods 304 are connected to the top of the first gear 303. The first gear 303 is movably mounted on the rotating shaft 307. On the outside of 2, a circular plate 305 is fixedly installed on the rotating shaft 302. The circular plate 305 is below the first gear 303. Multiple sets of support arms 306 are arranged circumferentially on the outer side wall of the circular plate 305. A set of rotating shafts 307 is rotatably arranged on each set of support arms 306. A set of second gears 308 is arranged at the top of each set of rotating shafts 307. Multiple sets of second gears 308 mesh with the first gear 303. An extension arm 309 is arranged at the bottom of each set of rotating shafts 307. A set of support rods 310 is arranged at the bottom of each set of extension arms 309. Multiple sets of stirring blades 311 are arranged on each set of support rods 310.

[0043] The sealing assembly includes a threaded groove 501, a sealing cover 502, a round hole 503, a bolt 504, a positioning rod 505, and a plug rod 506. The top of the housing 206 is provided with multiple sets of threaded grooves 501, and the sealing cover 502 is provided with multiple sets of round holes 503. Each set of round holes 503 is provided with a set of bolts 504, and the bolts 504 are threadedly connected to a set of threaded grooves 501. The bottom of the sealing cover 502 is provided with multiple sets of positioning rods 505, and each set of positioning rods 505 is provided with a set of plug rods 506 at the bottom. The plug rods 506 are interference-fitted with the plug holes 215.

[0044] The drainage assembly includes a drainage pipe 601 and a drainage valve 602. The drainage pipe 601 is provided at the front end of the housing 206, and the drainage valve 602 is installed on the drainage pipe 601.

[0045] It also includes a heating box 701, an electric heating wire 702 and a temperature detector 703. The heating box 701 is installed on the ink supply tube 102, the electric heating wire 702 is installed inside the heating box 701, and the temperature detector 703 is installed on the ink supply tube 102.

[0046] It also includes a handle 507, and the top of the sealing cover 502 is provided with a handle 507;

[0047] It also includes flat washers 508, with one set of flat washers 508 fitted on each set of bolts 504.

[0048] It also includes a sealing gasket 509, with the sealing cover 502 having a sealing gasket 509 at its bottom end, and the sealing cover 502 being installed on the top of the housing 206. When installing the filter plate 214, the insertion rods 506 are inserted into the corresponding insertion holes 215, and then the filter plate 214 is placed into the inner cavity. After that, the sealing cover 502 is installed on the top of the housing 206, with multiple sets of round holes 503 coinciding with multiple sets of threaded grooves 501. The bolts 504 are passed through a set of round holes 503 and threaded into the threaded grooves 501 to complete the seal. When the level detector 103 detects a decrease in the ink level in the chamber, the controller opens the ink replenishment valve 205 and starts the oil supply. Ink replenishment pump 202 allows ink from ink replenishment tank 201 to enter the inner cavity through ink replenishment pipe 203 and ink replenishment pipe 204, be filtered by filter plate 214, and then enter the chamber through ink inlet pipe 217. Then, ink replenishment pump 202 and ink replenishment valve 205 are closed. Next, solvent replenishment pump 209 and solvent replenishment valve 212 are started, allowing water-soluble solvent from solvent replenishment tank 208 to enter the inner cavity through solvent replenishment pipe 210 and solvent replenishment pipe 211, and then enter the chamber through ink inlet pipe 217. Motor 301 is started, causing shaft 302 to drive circular plate 305 and multiple sets of support arms. As gear 306 rotates, gear 303 remains stationary under the assistance of fixed rod 304. Meanwhile, circular plate 305 drives multiple sets of support arms 306 to rotate, and each set of support arms 306 drives the corresponding gear 308 to revolve via rotating shaft 307. Since gear 308 meshes with gear 303, it rotates on its own axis while revolving, further causing rotating shaft 307 to rotate on its own axis while revolving. This causes extension arm 309 to drive corresponding support rods 310 and multiple sets of stirring blades 311 to rotate on their own axis while revolving. The multiple sets of stirring blades 311 cooperate to stir the ink and water solvent in the chamber. Rapid mixing and stirring are performed. When backwashing of filter plate 214 is required, the ink inlet valve 218 is closed, the drain assembly is opened, and the solvent replenishment pump 209 and solvent replenishment valve 212 are started. This allows the water solvent to flush filter plate 214 from the bottom upwards. The water solvent also carries impurities above filter plate 214 out through the drain assembly, achieving both ink impurity filtration and backwashing of filter plate 214. When there are many impurities on filter plate 214 and the backwashing effect is poor, the sealing cover 502 is opened. When the sealing cover 502 is away from the housing 206, the positioning rod 505 and the insertion rod 506 move filter plate 214 out of the inner cavity.

[0049] The ink level detector 103, concentration detector 104, ink replenishment pump 202, ink replenishment valve 205, solvent replenishment pump 209, solvent replenishment valve 212, motor 301, electric heating wire 702, and temperature detector 703 of the automatic ink concentration adjustment device for printers of the present invention are commercially available. Those skilled in the art only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A printer ink concentration automatic adjusting device, comprising an ink tank (101), an ink delivery pipe (102), a liquid level detector (103) and a concentration detector (104), the inside of the ink tank (101) is provided with a chamber, the chamber is respectively provided with the liquid level detector (103) and the concentration detector (104), and the ink tank (101) is provided with the ink delivery pipe (102), characterized in that, The ink tank (101) is provided with an ink inlet assembly at the top end, and the chamber of the ink tank (101) is provided with a stirring assembly; the ink inlet assembly is used for quantitatively conveying ink and solvent into the chamber, and the stirring assembly is used for mixing and stirring the solvent and the ink; The ink inlet assembly comprises an ink supplement tank (201), an ink supplement pump (202), a first ink supplement pipe (203), a second ink supplement pipe (204), an ink supplement valve (205), a tank body (206), a support frame (207), a solvent supplement tank (208), a solvent supplement pump (209), a first solvent supplement pipe (210), a second solvent supplement pipe (211), a solvent supplement valve (212), a spray head (213), a filter plate (214), a jack (215), an ink inlet pipe (217), an ink inlet valve (218), a sealing assembly and a liquid discharge assembly; the ink supplement tank (201) and the solvent supplement tank (208) are both mounted at the top end of the ink tank (101); the ink supplement pump (202) and the solvent supplement pump (209) are both mounted at the top end of the ink tank (101); the bottom end of the tank body (206) is provided with a plurality of support legs (216), the bottom ends of the plurality of support legs (216) are all connected to the top end of the ink tank (101); the inside of the tank body (206) is provided with an inner cavity, the inner cavity is provided with the support frame (207), the support frame (207) is placed with the filter plate (214), the filter plate (214) is provided with the jack (215), the top end of the tank body (206) is provided with the sealing assembly, the sealing assembly fixes the filter plate (214), the bottom end of the tank body (206) is communicated with the top end of the ink inlet pipe (217), the bottom end of the ink inlet pipe (217) extends into the chamber, the ink inlet pipe (217) is mounted with the ink inlet valve (218), the output end of the ink supplement tank (201) is communicated with the input end of the first ink supplement pipe (203), the output end of the first ink supplement pipe (203) is communicated with the input end of the ink supplement pump (202), the output end of the ink supplement pump (202) is communicated with the input end of the second ink supplement pipe (204), the output end of the second ink supplement pipe (204) extends into the inner cavity, the first ink supplement pipe (203) is provided with the ink supplement valve (205), the output end of the solvent supplement tank (208) is communicated with the input end of the first solvent supplement pipe (210), the output end of the first solvent supplement pipe (210) is communicated with the input end of the solvent supplement pump (209), the output end of the solvent supplement pump (209) is communicated with the input end of the second solvent supplement pipe (211), the output end of the second solvent supplement pipe (211) extends into the inner cavity and is provided with the spray head (213), the first solvent supplement pipe (210) is mounted with the solvent supplement valve (212), the filter plate (214) and the support frame (207) are between the spray head (213) and the output end of the second ink supplement pipe (204), and the tank body (206) is provided with the liquid discharge assembly. The sealing assembly comprises screw grooves (501), a sealing cover (502), round holes (503), bolts (504), positioning rods (505) and insertion rods (506). The top end of the box body (206) is provided with a plurality of screw grooves (501). The sealing cover (502) is provided with a plurality of round holes (503). Each group of round holes (503) is respectively provided with a group of bolts (504). The bolts (504) are threadedly connected with a group of screw grooves (501). The bottom end of the sealing cover (502) is provided with a plurality of positioning rods (505). The bottom end of each group of positioning rods (505) is respectively provided with a group of insertion rods (506). The insertion rods (506) are in interference fit with the insertion holes (215). The liquid discharge assembly comprises a liquid discharge pipe (601) and a liquid discharge valve (602). The front end of the box body (206) is provided with a liquid discharge pipe (601). The liquid discharge pipe (601) is provided with a liquid discharge valve (602).

2. A printer ink density automatic adjusting apparatus as claimed in claim 1, wherein The stirring assembly comprises a motor (301), a rotating shaft (302), a first gear (303), fixing rods (304), a circular plate (305), supporting arms (306), rotating shafts (307), second gears (308), extension arms (309), supporting rods (310) and stirring blades (311). The top end of the ink tank (101) is provided with a motor (301). The output end of the motor (301) is provided with a rotating shaft (302). The bottom end of the rotating shaft (302) extends into the cavity and is rotatably connected with the ink tank (101). The top end of the cavity is provided with two groups of fixing rods (304). The bottom end of each fixing rod (304) is connected with the top end of a first gear (303). The first gear (303) is movably sleeved on the outside of the rotating shaft (302). The rotating shaft (302) is fixedly installed with a circular plate (305) below the first gear (303). The outside wall of the circular plate (305) is circumferentially provided with a plurality of supporting arms (306). Each supporting arm (306) is rotatably provided with a group of rotating shafts (307). Each rotating shaft (307) is provided with a group of second gears (308) at the top end. A plurality of second gears (308) are meshed with the first gear (303). The bottom end of each rotating shaft (307) is provided with a group of extension arms (309). The bottom end of each extension arm (309) is provided with a group of supporting rods (310). Each supporting rod (310) is provided with a plurality of stirring blades (311).

3. A printer ink density automatic adjusting apparatus as claimed in claim 1, wherein, The heating box (701), the electric heating wire (702) and the temperature detector (703) are further included. The ink conveying pipe (102) is sleeved with the heating box (701). The heating box (701) is internally provided with the electric heating wire (702). The ink conveying pipe (102) is provided with the temperature detector (703).

4. A printer ink density automatic adjusting apparatus as claimed in claim 1, wherein The handle (507) is further included. The top end of the sealing cover (502) is provided with the handle (507).

5. A printer ink density automatic adjusting apparatus as claimed in claim 1, wherein, The flat pads (508) are further included. Each group of bolts (504) is respectively sleeved with a group of flat pads (508). The handle (507) is further included. The top end of the sealing cover (502) is provided with the handle (507). The flat pads (508) are further included. Each group of bolts (504) is respectively sleeved with a group of flat pads (508).

6. A printer ink density automatic adjusting apparatus as claimed in claim 1, wherein, Also included is a sealing gasket (509), the bottom end of the sealing cover (502) is provided with the sealing gasket (509), and the sealing cover (502) is covered on the top end of the box body (206).

7. A printer ink density automatic adjusting apparatus as claimed in claim 2, wherein The stirring blade (311) is arranged at an angle of 45 degrees with the horizontal plane.

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