An apparatus for implementing ink mixing electro-spray printing

Abstract

The present application belongs to the field of advanced manufacturing technology, and provides a device for realizing ink mixing electrojet printing, which realizes high mixing in the process of ink transportation and forms stable jet. The ink solution first passes through an annular flow sensor, is then sucked into a precise conveying pipe, and is then sent to a tooth-shaped pipe mixer. The ink solution is preliminarily mixed by flowing through the tooth-shaped blades and arc-shaped split blades of the tooth-shaped pipe mixer, is controlled by a valve, and is then entered into a spiral pipe mixer. The ink solution is further mixed uniformly by using the self-generated centrifugal force field of the flowing liquid in the curved pipe, and finally, the mixed ink is electrojet printed. The electrojet printing device has the advantages of simple structure, low cost and difficulty in needle blockage.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of advanced manufacturing technology, and relates to a device for realizing ink mixing electroblasting printing. BACKGROUND

[0002] With the development of micro-nano technology, micro-nano products have gradually popularized in daily life, and have affected and changed people's life. With the increasing demand for micro-nano products, printing technology has played an important role in the field of micro-nano manufacturing due to its unique advantages. However, at present, researchers pay more attention to the research of new mechanisms and new methods, and pay less attention to the ink transportation in the printing process. However, the ink solution transportation process cannot be ignored, and it is crucial to the printing quality. In the traditional electroblasting printing process, the ink solution is directly transported from the delivery pipe to the needle. In the process of transporting the ink solution from the storage container to the needle, the ink solution needs to flow through a long delivery pipe. Due to the objective factors such as density, gravity and particle surface tension, the ink solution will inevitably produce agglomeration and deposition in the delivery pipe, and the mixed ink solution is not uniform, the number of particles contained in the unit volume is not uniform, and the number of particles contained in the unit volume is not equal, which will cause the same volume of nano solution to be subjected to different electric field forces in the electric field, induce unstable jet, cause the printing line width to be uneven, the dielectric constant to fluctuate greatly and other problems, and cause the performance of the printed micro-nano structure and device to be low. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the above-mentioned technologies and to provide a device for realizing ink mixing electrojet printing. First, the ink solution stored in the sealed storage tank is sucked into the delivery pipe by the transmission pump. Before flowing into the delivery pipe, the ink solution passes through the annular flow sensor. The annular flow sensor detects the flow of the ink solution in the delivery pipe and feeds back data to control the flow of the ink solution in time through the transmission pump, thereby maintaining the stability and uniformity of the electrojet printing. Then the delivery pipe transports the ink solution to the tooth-shaped pipe mixer. When the ink solution flows through the tooth-shaped blades of the tooth-shaped pipe mixer, the ink solution collides with the tooth-shaped blades, preliminarily mixes the ink solution precipitated after the first step of transportation, and then flows through the arc-shaped split blades. The arc-shaped split blades divide the water flow into two streams. The left water flow surrounds the left arc-shaped split blade to form a counterclockwise water flow, which flows down along the lower half of the smooth arc-shaped partition. The right water flow surrounds the right arc-shaped split blade to form a clockwise water flow, which flows down along the lower half of the smooth arc-shaped partition and collides with the left counterclockwise water flow, then flows through the lower end tooth-shaped blades of the tooth-shaped pipe mixer, and finally flows out of the two tooth-shaped mixer outlets. The two tooth-shaped mixer outlets divide the water flow into two streams. One stream flows through the tooth-shaped mixer outlet with a valve and enters the spiral mixer horizontally. The other stream flows through the tooth-shaped mixer outlet without a valve and enters the spiral mixer vertically, forming two streams with different speeds. In the spiral pipe mixer, the secondary flow is generated by the self-generated centrifugal field of the flowing liquid in the curved pipeline, realizing further mixing of the ink solution. Finally, the conductive jet needle clamp and the cavity jet needle move to the appropriate position on the Z-axis, form a certain height with the substrate, open the variable power supply, generate a voltage of several tens of volts to several thousand volts according to the demand, and the voltage makes the cavity jet needle outer surface form an electric field with the substrate, so that the ink solution is charged and attracted to the moving substrate connected to the ground, forming a stable nanometer jet. According to the demand, the moving substrate together with the substrate moves in the plane to receive the sprayed nanometer jet, and finally prints the finished product on the substrate. The device has the advantages of simple structure and low cost.

[0004] The delivery monitoring module includes a sealed storage tank, an ink solution, an annular flow sensor, a precision delivery pipe, and a transmission pump. The sealed storage tank is used to store the ink solution and is connected to the precision delivery pipe. The transmission pump provides power to the ink solution and sucks a certain amount of ink solution through the annular flow sensor into the precision delivery pipe. The annular flow sensor is fixed on the outer ring of the precision delivery pipe and is placed in front of the transmission pump. The annular flow sensor is located above the sealed storage tank, 10-100 cm away from the port of the sealed storage tank. After the ink solution is sucked from the sealed storage tank into the precision delivery pipe, it first flows through the annular flow sensor and then flows through the transmission pump.

[0005] The pipe type mixer module comprises a tooth-shaped pipe type mixer, tooth-shaped blades, arc-shaped shunt blades, a valve, tooth-shaped mixer outlet I, tooth-shaped mixer outlet II, helical mixer inlet I, helical mixer inlet II, a helical pipe type mixer, and a cavity injection needle; the tooth-shaped pipe type mixer is composed of tooth-shaped blades and arc-shaped shunt blades, the tooth-shaped blades are located at the upper and lower ends of the tooth-shaped pipe type mixer, and the arc-shaped shunt blades are located at the middle part of the tooth-shaped pipe type mixer; the lower end of the tooth-shaped pipe type mixer is provided with tooth-shaped mixer outlet I and tooth-shaped mixer outlet II, which are connected with the helical pipe type mixer; the tooth-shaped blades are uniformly distributed at the upper and lower ends of the tooth-shaped pipe type mixer, and one piece of tooth-shaped blade contained on the left side and one piece of tooth-shaped blade contained on the right side jointly form a unit cell; the arc-shaped shunt blades are located at the middle part of the tooth-shaped pipe type mixer, and the upper and lower parts of the tooth-shaped blades are connected by two symmetric three-quarter circles in the upper half part and two smooth arc-shaped partitions in the lower half part; the valve is installed at tooth-shaped mixer outlet I and connected with helical mixer inlet I; tooth-shaped mixer outlet II is directly connected with helical mixer inlet II without any blocking device; the upper end of the helical pipe type mixer comprises horizontal helical mixer inlet I and vertical helical mixer inlet II, and the main flow passage cross section of the helical pipe type mixer is in an elliptical shape; one Z-shaped helical pipe type mixer is a unit cell.

[0006] The jet printing motion module comprises a variable power supply, a Z-direction moving shaft, a conductive injection needle clamp, a jet, a substrate, and a motion base plate; the variable power supply can form a voltage of tens of volts to thousands of volts according to requirements, and an electric field is formed between the outer surface of the cavity injection needle and the substrate through the conductive injection needle clamp, so that a stable jet is formed; the Z-direction moving shaft is connected with the conductive injection needle clamp, so that the conductive injection needle clamp and the cavity injection needle move smoothly on the Z-axis; the conductive injection needle clamp is located at the middle part of the cavity injection needle and is connected with the cavity injection needle and the Z-direction moving shaft; the motion base plate is connected with the ground below the substrate and moves forward, backward, left and right according to requirements, so that the jet prints different shapes on the substrate.

[0007] To solve the above technical problems, the device for realizing ink mixing electrojet printing provided by the application is implemented, and the steps are as follows:

[0008] Firstly, the ink solution is delivered to the pipe type mixer

[0009] The ink solution is stored in a sealed tank, and a transmission pump provides power to suck a certain amount of ink solution into a precision conveying pipe. Before flowing into the precision conveying pipe, the ink solution passes through an annular flow sensor, which detects the flow of the ink solution in the precision conveying pipe and feeds back data to control the flow of the ink solution in time through the transmission pump, so as to avoid blockage of the precision conveying pipe due to excessive solution or unstable flow due to insufficient solution, and to maintain the stability and uniformity of the electric injection printing.

[0010] In the second step, the tooth-shaped tube mixer and the spiral mixer are used to fully mix the ink solution during the conveying process.

[0011] The precision conveying pipe transports the ink solution to the tooth-shaped tube mixer. First, the ink solution flows through the tooth-shaped blades of the three cells at the upper end of the tooth-shaped tube mixer, and the ink solution collides with the tooth-shaped blades to preliminarily mix the ink solution precipitated after the first conveying. Then, the ink solution flows through the arc-shaped split blades, which divide the water flow into left and right streams. The left stream flows around the left arc-shaped split blade to form a counterclockwise stream, and then flows down along the smooth arc-shaped partition plate in the lower half. The right stream flows around the right arc-shaped split blade to form a clockwise stream, and then flows down along the smooth arc-shaped partition plate in the lower half to collide and mix with the left counterclockwise stream. Then, the ink solution flows through the tooth-shaped blades of the three cells at the lower end of the tooth-shaped tube mixer, and then flows out of the tooth-shaped tube mixer through the tooth-shaped mixer outlet I and the tooth-shaped mixer outlet II. The tooth-shaped mixer outlet I and the tooth-shaped mixer outlet II divide the water flow into two streams. One stream flows through the tooth-shaped mixer outlet I, which has a valve. The valve size can be adjusted to adapt to different types of ink solutions and form ink solutions with different flow rates. The other stream flows through the tooth-shaped mixer outlet II and vertically flows into the spiral mixer inlet II without obstruction. The two streams flow through the tooth-shaped mixer outlet I through the valve and flow through the tooth-shaped mixer outlet II without obstruction, and finally form two streams with different speeds that converge into the spiral tube mixer. The two streams with different speeds of the same ink solution flow through the four cells of the spiral tube mixer. In the spiral tube mixer, the secondary flow is generated by the centrifugal field of the flowing liquid in the curved pipe, and the ink solution is further mixed and uniformized.

[0012] In the third step, the mixed and uniformized ink solution is printed into a finished product.

[0013] The conductive spray needle clamp and the cavity spray needle move to the appropriate position on the Z axis, form a certain height with the substrate, open the variable power supply, generate a voltage of tens of volts to thousands of volts according to the demand, the voltage makes the cavity spray needle outer surface and the substrate form an electric field, so that the ink solution is charged and attracted to the moving substrate connected to the ground, to form a stable nanofluid jet, according to the demand, the moving substrate moves together with the substrate in the plane, receives the sprayed nanofluid jet, and finally prints the finished product on the substrate.

[0014] The beneficial effects of the present application are: a device for realizing ink mixing electro-spray printing, realizing high mixing of ink solution, forming a stable jet. First, the ink solution stored in the sealed storage tank is powered by the transmission pump to provide power to the ink solution, and a certain amount of ink solution is first passed through the annular flow sensor and then sucked into the precision conveying pipe. Then the conveying pipe delivers the ink solution to the tooth-shaped pipe mixer, the ink solution is preliminarily mixed by flowing through the tooth-shaped blades and arc-shaped splitter blades of the tooth-shaped pipe mixer, and then forms two water flows, which are controlled by the valve to enter the spiral pipe mixer at different speeds. In the spiral pipe mixer, the secondary flow is generated by the centrifugal field of the flowing liquid in the curved pipeline, realizing further mixing of the ink solution. Finally, the conductive spray needle clamp and the cavity spray needle move to the appropriate position on the Z axis, open the variable power supply, add voltage, form a stable nanofluid jet, and finally print the finished product on the substrate. The annular flow sensor can detect the flow of the ink solution in the conveying pipe, and control the flow of the ink solution in time through the transmission pump to maintain the stability and uniformity of the electro-spray printing; the tooth-shaped blades in the tooth-shaped pipe mixer make the ink solution impact the tooth-shaped blades, the arc-shaped splitter blades divide the water flow into two water flows with different rotational directions, the two water flows collide, further mix and mix uniformly, finally form a stable jet, and print the finished product. This electro-spray printing device has the advantages of simple structure, remarkable effect, good mixing effect, etc. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a device for realizing ink mixing electro-spray printing in an embodiment of the present application.

[0016] Fig. 2 is a tooth-shaped pipe mixer device diagram in an embodiment of the present application.

[0017] Fig. 3 is a spiral pipe mixer device diagram in an embodiment of the present application.

[0018] In the figure: 1 sealed storage tank, 2 ink solution, 3 annular flow sensor, 4 precision conveying pipe, 5 transmission pump, 6 tooth-shaped pipe mixer, 7 tooth-shaped blade, 8 arc-shaped shunt blade, 9 variable power supply, 10 valve, 11 tooth-shaped mixer outlet I, 12 tooth-shaped mixer outlet II, 13 spiral-shaped mixer inlet I, 14 spiral-shaped mixer inlet II, 15 spiral-shaped pipe mixer, 16 Z-axis moving shaft, 17 conductive needle clamp, 18 cavity needle, 19 nanofluid, 20 substrate, 21 moving base plate. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application are described in detail below with reference to the technical solutions and the accompanying drawings. Refer to Figs. 1 to 3 .

[0020] The embodiment discloses a device for realizing ink mixing electro-spraying printing, which mainly comprises a conveying monitoring module, a pipe mixer module and a printing movement module. First, the ink solution stored in the sealed storage tank is powered by the transmission pump to pass through the annular flow sensor and then be sucked into the conveying pipe; then the conveying pipe transports the ink solution to the tooth-shaped pipe mixer, the ink solution is preliminarily mixed by flowing through the tooth-shaped blade and the arc-shaped shunt blade of the tooth-shaped pipe mixer, and then forms two water flows, which are controlled by the valve to enter the spiral-shaped pipe mixer at different speeds, so that the ink solution is further mixed uniformly by using the centrifugal field generated by the self-generation of the flowing liquid in the curved pipeline; finally, the conductive needle clamp and the cavity needle are moved to the appropriate position on the Z-axis, the variable power supply is turned on, the voltage is added, the stable nanofluid is formed, and finally the finished product is printed on the substrate.

[0021] Specifically, in the present example, the delivery monitoring module includes a sealed tank 1, an ink solution 2, an annular flow sensor 3, a precision delivery tube 4, a delivery pump 5; the tube mixer module includes a toothed tube mixer 6, toothed blades 7, arc-shaped splitter blades 8, a valve 10, toothed mixer outlet I 11, toothed mixer outlet II 12, helical mixer inlet I 13, helical mixer inlet II 14, a helical tube mixer 15, a cavity needle 18; the jet printing movement module includes a variable power supply 9, a Z-axis movement shaft 16, a conductive needle clamp 17, a nano jet 19, a substrate 20, a movement base plate 21. The annular flow sensor 3 is fixed to the outer ring of the precision delivery tube 4, arranged in front of the delivery pump 5, close to the sealed tank 1, 20-30 cm away from the sealed tank 1 to detect the flow of the ink solution 2 sucked by the delivery pump 5. The sealed tank 1 is made of glass, plastic or other materials, connected with the precision delivery tube 4, sealed with kerosene to isolate air. The toothed tube mixer 6 mainly consists of upper and lower toothed blades 7 and middle arc-shaped splitter blades 8, with toothed mixer outlet I 11 at the lower end, toothed mixer outlet II 12 connected with the helical tube mixer 15. The helical tube mixer 15 includes horizontal helical mixer inlet I 13 and vertical helical mixer inlet II 14 at the upper end. The main flow passage cross section of the helical tube mixer 15 is elliptical, with long and short radii of the ellipse being 12.5 mm and 8 mm respectively. The helical pitch of the helical tube mixer 15 is 30 mm. One Z-shaped helical tube mixer 15 is one unit cell, and there are four unit cells in total.

[0022] In the present embodiment, a device for realizing ink mixing electrojet printing is used for implementation, and the specific steps are as follows:

[0023] Firstly, the ink solution is delivered to the tube mixer

[0024] The ink solution 2 is stored in a sealed tank 1 with a capacity of 10-25 L. The delivery pump 5 provides power to make the ink solution 2 flow into the precision delivery tube 4 at a flow rate of 5-25 ml / s. Before flowing into the precision delivery tube 4, the ink solution 2 passes through the annular flow sensor 3 to detect the flow of the ink solution 2 in the precision delivery tube 4, which cannot be greater than 25 ml / s and cannot be less than 5 ml / s. If the flow exceeds this range, the delivery pump 5 controls the flow of the ink solution 2 in time to avoid clogging of the precision delivery tube 4 due to too much solution or unstable flow due to too little solution, thereby maintaining the stability and uniformity of electrojet printing.

[0025] Secondly, the toothed tube mixer and the helical mixer are used to fully mix the ink solution during the delivery process

[0026] The precise conveying pipe 4 carries the ink solution 2 to the tooth-shaped pipe mixer 6, first flows through the 3 unit cells of tooth-shaped blades 7 at the upper end of the tooth-shaped pipe mixer 6 with a length of 225mm-495mm and a width of 60-90mm, the ink solution 2 collides with the tooth-shaped blades 7, and the ink solution 2 precipitated after the first transportation is preliminarily mixed, then flows through the arc-shaped distribution blades 8 with a radius of 25mm-40mm, the arc-shaped distribution blades 8 divide the water flow into left and right two streams, the left stream surrounds the left arc-shaped distribution blade 8 to form a counterclockwise water stream, and flows down along the lower half of the smooth arc-shaped partition plate, and the right stream surrounds the right arc-shaped distribution blade 8 to form a clockwise water stream, and flows down along the lower half of the smooth arc-shaped partition plate to collide and mix with the left counterclockwise water stream, then flows through the 3 unit cells of tooth-shaped blades 7 at the lower end of the tooth-shaped pipe mixer 6, and is ready to flow out of the tooth-shaped pipe mixer 6, and when flowing out, passes through the tooth-shaped mixer outlet I 11 with a cross-sectional radius of 15-25mm and the tooth-shaped mixer outlet II 12 with a cross-sectional radius of 15-25mm to divide the water flow into two streams, one stream flows through the tooth-shaped mixer outlet I 11, the tooth-shaped mixer outlet I 11 is provided with a valve 10, the size of the valve 10 can be adjusted according to needs to adapt to different types of ink solution 2 to form an ink solution 2 with a flow rate of 2-15ml / s, which horizontally enters the spiral mixer inlet I 13, and the other stream flows through the tooth-shaped mixer outlet II 12 and vertically flows into the spiral mixer inlet II 14 without obstruction, the two streams of water flow are limited by the valve 10 when flowing through the tooth-shaped mixer outlet I 11, and are not obstructed when flowing through the tooth-shaped mixer outlet II 12, and finally form water streams with flow rates of 2-15ml / s and 5-25ml / s respectively, and converge into the spiral-shaped pipe mixer 15, and the two streams of water flow with different speeds generated by the same ink solution 2 flow through the spiral-shaped pipe mixer 15 with 4 unit cells and a length of 60-90mm per unit cell, and secondary flow is generated in the spiral-shaped pipe mixer 15 by using the centrifugal field generated by the flowing liquid in the curved pipeline to realize further mixing of the ink solution 2;

[0027] Third step, printing finished product of mixed uniform ink solution

[0028] The conductive spray needle clamp 17 and the cavity spray needle 18 move on the Z-axis by a distance to form a height of 100mm-300mm from the substrate 20, the variable power supply 9 is turned on, and a voltage of 30V to 3000V is generated according to needs, the voltage passes through the conductive spray needle clamp 17 to form an electric field between the outer surface of the cavity spray needle 18 and the substrate 20, so that the ink solution 2 is charged and attracted to the moving base plate 21 connected to the ground, a stable nanofluidic jet 19 is formed, the moving base plate 21 moves together with the substrate 20 in the plane according to needs, receives the sprayed nanofluidic jet 19, and finally prints the finished product on the substrate 20.

Claims

1. An apparatus for implementing ink mixing electro-jet printing, comprising a delivery monitoring module, a tube-type mixer module, a jet printing motion module; characterized in that, The delivery monitoring module comprises a sealed storage tank (1), an ink solution (2), a ring-shaped flow sensor (3), a precision delivery pipe (4), and a transmission pump (5); the sealed storage tank (1) is used for storing the ink solution (2) and is connected with the precision delivery pipe (4); the transmission pump (5) provides power for the ink solution (2) to absorb a required amount of the ink solution (2) through the ring-shaped flow sensor (3) and then into the precision delivery pipe (4); the ring-shaped flow sensor (3) is fixed on the outer ring of the precision delivery pipe (4) and is arranged in front of the transmission pump (5); the ring-shaped flow sensor (3) is located above the sealed storage tank (1) and is 10-100 cm away from the port of the sealed storage tank (1); after the ink solution (2) is absorbed from the sealed storage tank (1) into the precision delivery pipe (4), the ink solution (2) flows through the ring-shaped flow sensor (3) and then through the transmission pump (5); The pipe-type mixer module comprises a tooth-shaped pipe-type mixer (6), tooth-shaped blades (7), arc-shaped shunt blades (8), a valve (10), a tooth-shaped mixer outlet I (11), a tooth-shaped mixer outlet II (12), a helical mixer inlet I (13), a helical mixer inlet II (14), a helical pipe-type mixer (15), and a cavity injection needle (18); the tooth-shaped pipe-type mixer (6) is composed of the tooth-shaped blades (7) and the arc-shaped shunt blades (8); the tooth-shaped blades (7) are located at the upper and lower ends of the tooth-shaped pipe-type mixer (6), and the arc-shaped shunt blades (8) are located at the middle part of the tooth-shaped pipe-type mixer (6); the lower end of the tooth-shaped pipe-type mixer (6) is provided with the tooth-shaped mixer outlet I (11) and the tooth-shaped mixer outlet II (12) and is connected with the helical pipe-type mixer (15); the tooth-shaped blades (7) are evenly distributed at the upper and lower ends of the tooth-shaped pipe-type mixer (6); one piece of tooth-shaped blade (7) contained on the left side and one piece of tooth-shaped blade (7) contained on the right side together form a unit cell; three unit cells are arranged at the upper and lower ends, respectively; the arc-shaped shunt blades (8) are located at the middle part of the tooth-shaped pipe-type mixer (6) and are arranged between the upper and lower tooth-shaped blades (7); the upper half is connected by two symmetric three-fourths circles, and the lower half is composed of two smooth arc-shaped partitions; the valve is installed at the tooth-shaped mixer outlet I (11) and is connected with the helical mixer inlet I (13); the tooth-shaped mixer outlet II (12) is directly connected with the helical pipe-type mixer inlet II (14) without any blocking device; the upper end of the helical pipe-type mixer (15) comprises the horizontal helical mixer inlet I (13) and the vertical helical mixer inlet II (14); the main flow passage cross section of the helical pipe-type mixer (15) is in an elliptical shape; one section of Z-shaped helical pipe-type mixer (15) is one unit cell. The jet printing movement module comprises a variable power supply (9), a Z-direction moving shaft (16), a conductive jet needle clamp (17), a jet (19), a substrate (20), and a movement base plate (21). The variable power supply (9) forms an electric field between the outer surface of the cavity jet needle (18) and the substrate (20) through the conductive jet needle clamp (17), and the ink solution (2) forms a stable jet (19) in the electric field. The Z-direction moving shaft (16) is connected with the conductive jet needle clamp (17), so that the conductive jet needle clamp (17) and the cavity jet needle (18) move smoothly on the Z-axis. The conductive jet needle clamp (17) is located in the middle of the cavity jet needle (18) and connects the cavity jet needle (18) with the Z-direction moving shaft (16). The movement base plate (21) is tightly connected to the ground under the substrate (20) and moves forward, backward, left and right according to the requirement, so that the jet (19) prints different shapes on the substrate (20).

2. A method of performing ink mixing electroblotting using the apparatus of claim 1, wherein, The steps are as follows: First, deliver the ink solution to the tube mixer The ink solution (2) is stored in a sealed storage tank (1), and the transmission pump (5) provides power to suck a certain amount of ink solution (2) into the precision delivery pipe (4). Before flowing into the precision delivery pipe (4), the ink solution (2) passes through the annular flow sensor (3) first. The annular flow sensor (3) detects the flow of the ink solution (2) in the precision delivery pipe (4) and feeds back data in time to control the flow of the ink solution (2) through the transmission pump (5), so as to avoid the blockage of the precision delivery pipe (4) due to too much ink solution (2) or unstable flow due to too little ink solution (2), and to maintain the stability and uniformity of the electrojet printing; Second, mix the ink solution thoroughly during the delivery process The precise conveying pipe (4) carries the ink solution (2) to the tooth-shaped pipe type mixer (6), first flows through the tooth-shaped blades (7) of the upper 3 cells of the tooth-shaped pipe type mixer (6), the ink solution (2) collides with the tooth-shaped blades (7), and the ink solution (2) caused by the first step of transportation is preliminarily mixed and precipitated, then flows through the arc-shaped shunt blades (8), the arc-shaped shunt blades (8) divide the water flow into left and right two streams, the left water flow surrounds the left arc-shaped shunt blades (8) to form a counterclockwise water flow, flows down along the lower half smooth arc-shaped partition, and the right water flow surrounds the right arc-shaped shunt blades (8) to form a clockwise water flow, collides and mixes with the left counterclockwise water flow along the lower half smooth arc-shaped partition, then flows through the tooth-shaped blades (7) of the lower 3 cells of the tooth-shaped pipe type mixer (6), and is ready to flow out of the tooth-shaped pipe type mixer (6). When flowing out, it passes through the tooth-shaped mixer outlet I (11) and the tooth-shaped mixer outlet II (12), the two outlets divide the water flow into two streams, one stream flows through the tooth-shaped mixer outlet I (11), the tooth-shaped mixer outlet I (11) is provided with a valve (10), the size of the valve (10) can be adjusted according to needs, different types of ink solution (2) are formed to adapt to different flow rates of the ink solution (2), and the other stream flows through the tooth-shaped mixer outlet II (12) and vertically flows into the spiral type mixer inlet II (14) without obstruction. The two water streams, the water stream flowing through the tooth-shaped mixer outlet I (11) is limited by the valve (10), the water stream flowing through the tooth-shaped mixer outlet II (12) is not hindered, and finally two water streams with different speeds are formed, which converge into the spiral-shaped pipe type mixer (15). The two water streams with different speeds generated by the same ink solution (2) generate secondary flow in the spiral-shaped pipe type mixer (15) by using the centrifugal field generated by the flowing liquid in the curved pipeline, so that the ink solution (2) is uniformly mixed; The third step is to print the uniformly mixed ink solution The conductive spray needle clamp (17) and the hollow spray needle (18) move to the appropriate position on the Z-axis to form a certain height with the substrate (20), the variable power supply (9) is turned on, the voltage passes through the outer surface of the conductive spray needle clamp (17) and the hollow spray needle (18), and an electric field is formed between the conductive spray needle clamp (17) and the substrate (20). The ink solution (2) is charged and attracted to the moving base plate (21) connected to the ground, forming a stable jet (19). According to needs, the moving base plate (21) moves together with the substrate (20) in the plane to receive the jet (19) sprayed out, and finally prints the finished product on the substrate (20).

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