CN111715880A - A liquid metal micro-spray control valve based on electric field force - Google Patents

Abstract

The invention provides a liquid metal micro-spray control valve, which relates to the technical field of micro-spray valves. Among them, this micro-spray control valve includes: a shell mechanism with a built-in cavity and a discharge port, a partition mechanism for dividing the cavity into left and right halves, and a supply to be injected into the left and right halves of the cavity. The feeding mechanism includes a charging mechanism and an electric field mechanism including a first charging head and a second charging head respectively arranged in the left cavity and the right cavity. The electric field mechanism includes a first conductor and a second conductor which are respectively arranged on the baffle mechanism and are respectively located at one end of the left cavity and the right cavity away from the discharge port. The first charging head and the second charging head are used to charge the objects to be ejected, so that the objects to be ejected in the left and right cavities carry opposite charges respectively; the first conductor and the second conductor can be connected to the power supply and generate an electric field to push the charged The object to be sprayed moves to the discharge port, and then sprays outward. The micro-spray control valve can be charged first and then sprayed, and the charging head does not need to be connected to the power supply all the time during spraying.

Description

A liquid metal micro-spray control valve based on electric field force

technical field

The invention relates to the technical field of micro-spray valves, in particular to a liquid metal micro-spray control valve based on electric field force.

Background technique

Electromagnetic force micro-spray valve is a special kind of micro-spray valve that drives liquid spray through electromagnetic force by energizing the metal liquid and then adding a magnetic field. It can be applied to additive manufacturing, ie 3D printing. At present, there are two main types of micro-injection valves driven by electromagnetic force:

The first type is to generate a magnetic field by fixing the permanent magnet on the valve body. Under the action of the magnetic field, the energized metal liquid will be subjected to the downward Lorentz force, thereby ejecting metal droplets;

The second type is similar to the first type, that is, a coil is wound on the valve body, and an alternating current is passed through the coil to generate a magnetic field, that is, a magnetic field is generated by an electromagnet, and a metal droplet is also ejected by the Lorentz force.

One thing in common for these two types is that the molten metal needs to be energized all the time without interruption.

In view of this, the applicant hereby proposes the present application after studying the prior art.

SUMMARY OF THE INVENTION

The present invention provides a liquid metal micro-spray control valve based on electric field force, which aims to improve the problem that the current micro-spray valve needs to energize the metal liquid all the time during use.

In order to solve the above-mentioned technical problems, the present invention provides a liquid metal micro-spray control valve based on electric field force, which comprises:

a housing mechanism, with a built-in cavity, and a discharge port connected to the cavity and arranged downward;

a partition mechanism, which is arranged on the housing mechanism and used to divide the cavity into a left cavity and a right cavity, and the discharge port is respectively connected to the left cavity and the right cavity;

a feeding mechanism, which is respectively connected to the left cavity and the right cavity, and is used for supplying the object to be injected to the left cavity and the right cavity;

a charging mechanism, comprising a first charging head and a second charging head respectively disposed in the left cavity and the right cavity;

an electric field mechanism, comprising a first conductor and a second conductor respectively disposed on the baffle mechanism and located at one end of the left cavity and the right cavity away from the discharge port;

The first charging head and the second charging head are used for charging the objects to be ejected, so that the objects to be ejected in the left and right cavities respectively carry opposite charges; the first conductor and the second conductor can Turn on the power supply and generate an electric field to push the charged material to be sprayed to the discharge port, and then spray outward.

Optionally, the electric field force-based metal liquid micro-spray control valve further includes a receiving mechanism located below the housing mechanism and facing the discharge port, and the receiving mechanism can be grounded;

The electric field mechanism further includes a third conductor disposed on the receiving mechanism and facing the first conductor, and a fourth conductor disposed on the receiving mechanism and facing the second conductor;

The third conductor can be connected to the electrode opposite to the first conductor, and the fourth conductor can be connected to the electrode opposite to the second conductor, so that the first conductor and the third conductor are connected to each other. A uniform electric field can be generated between the second conductor and the fourth conductor.

Optionally, the electric field force-based metal liquid micro-spray control valve further includes a heating mechanism disposed in the housing mechanism, and the heating mechanism is used to heat the object to be sprayed in the cavity to keep it in a liquid state ;

The receiving mechanism includes a collecting plate facing the discharge port, the third conductor and the fourth conductor are respectively arranged on the left and right sides of the collecting plate, and the middle of the collecting plate can be grounded.

Optionally, the housing mechanism further has an opening connected to the cavity and disposed upward;

The partition mechanism includes a cavity sub-seat that is disposed in the opening and extends toward the interior of the cavity, and the cavity sub-seat is used to divide the cavity into the left cavity and the right cavity;

The inner wall of the cavity is provided with a groove for installing the sub-chamber seat.

Optionally, the baffle mechanism further includes a pair of metal plates and a pair of insulating plates;

The two sides of the sub-chamber seat facing the left cavity and the right cavity are respectively provided with installation grooves;

A pair of the metal plates are respectively arranged at the bottom of the pair of the installation grooves, so as to prevent the formation of an electric field between the objects to be ejected with opposite charges in the left cavity and the right cavity;

A pair of the insulating plates are respectively disposed at the openings of the pair of the installation grooves to insulate and seal the installation grooves.

Optionally, the casing mechanism includes an upper casing, a lower casing disposed on the upper casing, and a pair of insulating sleeves;

The upper casing and the lower casing are mutually formed with the cavity, and the lower casing is provided with the discharge port;

A pair of the isolation sleeves are respectively disposed on two sides of the cavity to serve as the side walls of the left cavity and the right cavity.

Optionally, the housing mechanism further includes a nozzle disposed at the outlet;

The discharge port is provided with a partition plate to separate the discharge port into two flow channels;

The nozzle is provided with an injection port with a diameter smaller than that of the material outlet, and the injection port is directly opposite to the material outlet.

Optionally, the charging mechanism includes a pair of insulating bases respectively disposed on the housing mechanism and extending toward the left cavity and the right cavity, respectively, the first charging head and the second charging head. are respectively arranged on the insulating bases;

The insulating base has a through hole for passing the wire to connect to the charging head.

Optionally, the heating mechanism includes a pair of heat insulation seats respectively disposed in the housing mechanism and extending into the left cavity and the right cavity respectively, and a pair of heat insulation seats respectively disposed in the heat insulation seat heating element; the heat insulating seat is an insulating material;

The heat insulating base has a through hole for passing a wire to connect to the heating element.

Optionally, the electric field mechanism includes a pair of mounting bases respectively disposed on the baffle mechanism, and a pair of insulating sleeves disposed on the baffle mechanism and extending toward the mounting bases respectively;

the mounting seat is an insulating material;

the first conductor and the second conductor are plate-like geometry;

the first conductor and the second conductor are respectively arranged on a pair of the mounting seats;

The insulating sleeve has a through hole for passing the wire to connect to the conductor.

By adopting the above-mentioned technical scheme, the present invention can achieve the following technical effects:

In the liquid metal micro-spray control valve of the present invention, the first charging head and the second charging head are respectively connected to the positive and negative poles of the charging power supply, and then respectively charge the objects to be injected in the left cavity and the right cavity, so that the left cavity is The object to be ejected has a positive charge, and the object to be ejected in the right cavity has a negative charge. The first conductor and the second conductor are respectively connected to the positive and negative poles of the power supply, and are energized after charging, so that a downward electric field is generated in the left cavity, and an upward electric field is generated in the right cavity. Therefore, the objects to be ejected with positive charges in the left cavity are driven to move downward, and the objects to be ejected with negative charges in the right cavity also move down. The objects to be ejected with different charges move to the discharge port to mix and neutralize the electrical properties, so that the ejected objects from the discharge port are electrically neutral, which is of great practical significance.

The molten metal micro-spray control valve of the present invention utilizes the driving of the charged liquid by the electric field force, especially the driving of the charged metal liquid by the electric field force, so as to realize the downward spraying effect of the object to be sprayed. Change the current provided by the charging head, so that the amount of charge on the object to be sprayed is different, and the size of the droplets gathered at the discharge port is different, so as to adjust the spray amount. Of course, the voltage at the first conductor and the second conductor can also be adjusted to change the magnitude of the electric field, thereby adjusting the injection amount.

In addition, the molten metal micro-spray control valve of the present invention can be charged first and then sprayed, and the charging head does not need to be connected to the power supply all the time during spraying, which can greatly save energy and has good practical significance.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the three-dimensional schematic diagram of molten metal micro-spray control valve;

Fig. 2 is the sectional view of A-A in Fig. 1;

Fig. 3 is the exploded view of Fig. 2;

FIG. 4 is a schematic perspective view of the housing mechanism (for the convenience of showing some features are cut away);

Fig. 5 is a three-dimensional exploded schematic diagram of the baffle mechanism and the electric field mechanism (for the convenience of showing some features are cut away);

FIG. 6 is a perspective view of the lower casing (for the convenience of showing some features are cut away);

FIG. 7 is a schematic perspective view of the collection mechanism and the electric field mechanism (sections of features are cut away for ease of illustration).

Markings in the figure: 1-shell mechanism; 2-receiving mechanism; 3-charging mechanism; 4-heating mechanism; 5-feeding mechanism; 6-partition mechanism; 7-electric field mechanism; 8-cavity; 9-right Cavity; 10-left cavity; 11-insulation sleeve; 12-chamber seat; 13-installation seat; 14-first conductor; 15-metal plate; 16-insulation plate; 17-installation slot; 18-isolation sleeve ; 19-upper shell; 20-heating element; 21-insulation base; 22-first charging head; 23-insulation base; 24-lower shell; 25-nozzle; 26-collection plate; 27-third conductor ; 28 - the fourth conductor; 29 - the second charging head; 30 - the second conductor; 31 - the groove;

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

As shown in FIG. 1 to FIG. 7 , in this embodiment, a liquid metal micro-spray control valve based on electric field force includes:

The housing mechanism 1 has a built-in cavity 8, and a discharge port 32 connected to the cavity 8 and disposed downward;

The partition mechanism 6 is disposed in the housing mechanism 1, and is used to divide the cavity 8 into a left cavity 10 and a right cavity 9, and the discharge port 32 is respectively connected to the left cavity 10 and the right cavity 9;

The feeding mechanism 5 is connected to the left cavity 10 and the right cavity 9 respectively, and is used to supply the object to be injected to the left cavity 10 and the right cavity 9;

The charging mechanism 3 includes a first charging head 22 and a second charging head 29 respectively disposed in the left cavity 10 and the right cavity 9;

The electric field mechanism 7 includes a first conductor 14 and a second conductor 30 which are respectively arranged on the baffle mechanism 6 and located at one end of the left cavity 10 and the right cavity 9 away from the discharge port 32 .

In the molten metal micro-spray control valve of the present invention, the first charging head 22 and the second charging head are respectively connected to the positive and negative poles of the charging power supply, and then respectively charge the objects to be injected in the left cavity 10 and the right cavity 9, so that the The object to be ejected in the left cavity 10 has a positive charge, and the object to be ejected in the right cavity 9 has a negative charge. The first conductor 14 and the second conductor 30 are respectively connected to the positive and negative poles of the power supply, and are energized after charging, so that a downward electric field is generated in the left cavity 10 and an upward electric field is generated in the right cavity 9 . As a result, the objects to be ejected with positive charges in the left cavity 10 are driven to move downward, and the objects to be ejected with negative charges in the right cavity 9 also move downward. The objects to be ejected with different charges move to the discharge port 32 to mix and neutralize the electrical properties, so that the ejected objects ejected from the discharge port 32 are electrically neutral, which has good practical significance.

The molten metal micro-spray control valve of the present invention uses the electric field force to drive the charged liquid, especially the electric field force drives the charged metal liquid, and realizes the effect of downward spraying of the object to be sprayed. The current provided by the charging head is changed, so that the charge amount of the object to be sprayed is different, and the size of the droplets gathered at the discharge port 32 is different, so as to adjust the spray amount. Of course, the voltage at the first conductor 14 and the second conductor 30 can also be adjusted to change the magnitude of the electric field, so as to adjust the spray amount.

In addition, the molten metal micro-spray control valve of the present invention can be charged first and then sprayed, and the charging head does not need to be connected to the power supply all the time during spraying, which can greatly save energy and has good practical significance.

As shown in FIGS. 1 to 3 , on the basis of the above-mentioned embodiments, in a preferred embodiment of the present invention, the molten metal micro-spray control valve includes a receiving mechanism 2 located below the housing mechanism 1 and facing the discharge port 32 . , the receiving mechanism 2 is grounded;

The electric field mechanism 7 further includes a third conductor 27 disposed in the receiving mechanism 2 and facing the first conductor 14 , and a fourth conductor 28 disposed in the receiving mechanism 2 and facing the second conductor 30 .

The receiving mechanism 2 is located under the housing mechanism 1 and is facing the outlet 32, so that the third conductor 27 and the fourth conductor 28 arranged in the receiving mechanism 2 can be located at the positions of the first conductor 14 and the second conductor 30, respectively. Directly below.

The first conductor 14 and the third conductor 27 are respectively connected to the positive and negative poles of the left electric field power supply. The electric field from the first conductor 14 to the third conductor 27 is uniformly distributed in the left cavity 10, that is, the downward electric field, and the object to be ejected with positive charges moves downward under the action of the electric field force.

The fourth conductor 28 and the second conductor 30 are respectively connected to the positive and negative poles of the right electric field power supply. The electric field from the fourth conductor 28 to the second conductor 30 is uniformly distributed in the right cavity 9, that is, an upward electric field, and the object to be ejected with negative charges moves upward under the action of the electric field force.

The liquid to be sprayed in the left and right cavities moves downward to the discharge port 32 , and is mixed at the discharge port 32 to achieve electrical neutrality, and then sprayed outward from the discharge port 32 .

Specifically, the receiving mechanism 2 includes a collecting plate 26 facing the discharge port 32 . The collecting plate 26 can be made of conductive material as a whole, or can be made of conductive material on the left and right and insulating material in the middle. The third conductor 27 and the fourth conductor 28 are respectively arranged on the left and right sides of the collecting plate 26, and the middle of the collecting plate 26 is grounded.

On the basis of this embodiment, in a preferred embodiment, the left electric field power source and the right electric field power source have an electrode switching function, which can switch the polarities of the electrodes connected to the four conductors.

When jetting is required, the output motors of the left electric field power supply and the right electric field power supply are the same as in the previous embodiment.

When liquid collection is required, switch the output polarities of the left electric field power supply and the right electric field power supply, so that the third conductor 27 and the first conductor 14 are respectively connected to the positive and negative poles of the left electric field power supply, and the second conductor 30 and the fourth conductor 28 are respectively connected to the positive and negative poles of the left electric field power supply. Connect the positive and negative poles of the right electric field power supply. At this time, the charged objects to be ejected in the left cavity 10 and the right cavity 9 move upward. It can realize instant liquid collection and prevent liquid leakage, which has good practical significance.

On the basis of this embodiment, in a preferred embodiment, the molten metal micro-spray control valve includes a heating mechanism 4 disposed in the housing mechanism 1 , and the heating mechanism 4 is used to heat the material to be sprayed in the cavity 8 to keep it in a liquid state ;

Specifically, the heating mechanism 4 includes a pair of heat insulating bases 21 respectively disposed on the housing mechanism 1 and extending toward the left cavity 10 and the right cavity 9 respectively, and a pair of heating elements 20 respectively disposed on the heat insulating bases 21 . The heat insulating base 21 has a through hole through which a wire is passed through to be connected to the heating element 20 .

The external power supply supplies power to the pair of heating elements 20 through the wires passing through the through holes, so that the heating elements 20 generate heat, maintain the liquid state of the object to be ejected, and ensure the fluidity of the object to be ejected. Thus, the spraying effect of the molten metal micro-spraying control valve is ensured, which has good practical significance. Wherein, the heat insulating seat 21 is an insulating material.

As shown in Figure 2 to Figure 4, on the basis of this embodiment, in a preferred embodiment:

The housing mechanism 1 has an opening that communicates with the cavity 8 and is disposed upward.

The partition mechanism 6 includes a sub-chamber seat 12 disposed at the opening and extending toward the interior of the cavity 8 . The sub-chamber seat 12 is used to divide the cavity 8 into a left cavity 10 and a right cavity 9 .

The inner wall of the cavity 8 is provided with a groove 31 for installing the sub-chamber seat 12 .

Specifically, the casing mechanism 1 includes an upper casing 19, a lower casing 24 disposed on the upper casing 19, and a pair of insulating sleeves 18;

The upper casing 19 has a tubular geometry, and the lower casing 24 is provided with a groove 31 that opens upward. The lower casing 24 covers the bottom of the upper casing 19 to form the cavity 8 , and the grooves 31 are provided on the inner walls of the upper casing 19 and the lower casing 24 .

The sub-chamber passes through the interior of the upper housing 19 along the groove 31 from above the upper housing 19 until it is inserted into the groove 31 of the lower housing 24, and divides the chamber 8 into the left chamber 10 and the right chamber 10. Cavity 9.

In this embodiment, the cavity 8 is a square stretching geometry, and in other embodiments, the cavity 8 may have any shape, which is not specifically limited in the present invention.

The bottom center of the lower casing 24 is provided with discharge ports 32 which are respectively communicated with the left cavity 10 and the right cavity 9 .

A pair of isolation sleeves 18 are respectively disposed on both sides of the cavity 8 to serve as the side walls of the left cavity 10 and the right cavity 9 to separate the object to be sprayed from the upper casing 19 .

As shown in FIG. 3 , on the basis of this embodiment, in a preferred embodiment, the housing mechanism 1 includes a nozzle 25 disposed at the outlet 32 . The discharge port 32 is provided with a partition plate 33 for dividing the discharge port 32 into two flow channels. The nozzle 25 is provided with an injection port with a diameter smaller than that of the discharge port 32 , and the injection port is directly opposite to the discharge port 32 .

Specifically, the discharge port 32 is provided with two flow channels, which are respectively connected to the left cavity 10 and the right cavity 9, which can effectively prevent the liquids in the left and right cavities from directly converging in the discharge port 32, causing the left and right sides to converge. The liquid in the left and right cavities neutralizes the electric property prematurely, thereby affecting the electric charge of the molten metal in the left and right cavities 9.

The materials to be injected in the left and right cavities flow out from the two flow channels respectively, and then enter the injection port of the nozzle 25 to be mixed, and neutralize the electrical properties in the injection port, so that the molten metal micro-spray control valve of the present invention can spray out different liquids. Charged jets.

The hole diameter of the injection port is smaller than the hole diameter of the discharge port 32, and the pressure can be increased inside the nozzle 25 to improve the spray effect of the molten metal micro-spray control valve, which has good practical significance.

The side of the discharge port 32 facing the cavity 8 is provided with a chamfer for guiding flow, so that the charged material to be sprayed can enter the discharge port 32 more smoothly.

On the basis of this embodiment, in a preferred embodiment, the charging mechanism 3 includes a pair of insulating bases 23 respectively disposed in the housing mechanism 1 and extending toward the left cavity 10 and the right cavity 9 respectively. The first charging head 22 and the second charging head 29 are respectively arranged on the insulating base 23 . The insulating base 23 has a through hole for the wire to pass through to connect to the charging head.

Specifically, a pair of insulating seats 23 are installed opposite to the lower position of the upper casing 19 and penetrate through the cavity wall of the upper casing 19 respectively. . The insulating base 23 is provided with a through hole for the wire to pass through and connect to the charging head. The charging power supply supplies power to the two charging heads through wires.

The setting of the insulating seat 23 can effectively prevent the leakage of the molten metal micro-spray control valve, which has good practical significance.

On the basis of this embodiment, in a preferred embodiment, the partition mechanism 6 further includes a pair of metal plates 15 and a pair of insulating plates 16;

The two sides of the sub-cavity seat 12 facing the left cavity 10 and the right cavity 9 are respectively provided with installation grooves 17 ;

A pair of metal plates 15 are respectively arranged at the bottom of a pair of installation grooves 17 to prevent the formation of an electric field between the objects to be ejected with opposite charges in the left cavity 10 and the right cavity 9;

A pair of insulating plates 16 are respectively disposed at the openings of the pair of installation grooves 17 for insulating and sealing the installation grooves 17 .

Specifically, the metal plate 15 can effectively prevent the formation of an electric field between the charged objects to be ejected in the left cavity 10 and the right cavity 9 , thereby affecting the movement of the objects to be ejected in the left and right cavities 9 . The insulating plate 16 can effectively isolate the charged object to be sprayed from the metal plate 15 to prevent the metal plate 15 from being electrified.

On the basis of this embodiment, in a preferred embodiment, the electric field mechanism 7 includes a pair of mounting bases 13 respectively disposed on the partition mechanism 6 and a pair of insulating bases 13 disposed on the partition mechanism 6 and extending toward the mounting bases 13 respectively. set of 11;

The mounting seat 13 is an insulating material;

The first conductor 14 and the second conductor 30 are plate-like geometry;

The first conductor 14 and the second conductor 30 are respectively arranged on a pair of mounting bases 13;

The insulating sleeve 11 has through holes through which the wires are passed to be connected to the conductors.

Specifically, the plate-shaped first conductor 14 and the second conductor 30 can make the electric field distribution in the left chamber 8 and the right chamber 8 more uniform, and the charged object to be ejected is in the left chamber 8 and the right chamber 8 Internal movement is more regular. The insulating mounting seat 13 and the insulating sleeve 11 can effectively prevent the leakage of the molten metal micro-spray control valve, which has good practical significance.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a liquid metal micro-spray control valve based on electric field force, is characterized in that, comprises: a housing mechanism (1), with a built-in cavity (8), and a discharge port (32) connected to the cavity (8) and disposed downward; A partition mechanism (6) is arranged on the housing mechanism (1), and is used to divide the cavity (8) into a left cavity (10) and a right cavity (9), and the discharge port ( 32) are respectively connected to the left cavity (10) and the right cavity (9); A feeding mechanism (5) is connected to the left cavity (10) and the right cavity (9), respectively, and is used to supply the left cavity (10) and the right cavity (9) to be spray; a charging mechanism (3), comprising a first charging head (22) and a second charging head (29) respectively disposed in the left cavity (10) and the right cavity (9); An electric field mechanism (7), comprising respectively disposed on the baffle mechanism (6), and respectively located at one end of the left cavity (10) and the right cavity (9) away from the discharge port (32) the first conductor (14) and the second conductor (30); The first charging head (22) and the second charging head (29) are used to charge the objects to be ejected, so that the objects to be ejected in the left and right cavities (9) respectively carry opposite charges; A conductor (14) and the second conductor (30) can be connected to a power supply and generate an electric field, so as to push the charged object to be ejected to move toward the outlet (32), and then ejected outward. 2. The electric field force-based metal liquid micro-spray control valve according to claim 1, characterized in that it further comprises a control valve located below the housing mechanism (1) and facing the discharge port (32) the receiving mechanism (2), the receiving mechanism (2) can be grounded; The electric field mechanism (7) further comprises a third conductor (27) disposed in the receiving mechanism (2) and facing the first conductor (14), and a third conductor (27) disposed in the receiving mechanism (2) and facing the first conductor (14). a fourth conductor (28) opposite said second conductor (30); The third conductor (27) can be connected to the electrode opposite to the first conductor (14), and the fourth conductor (28) can be connected to the electrode opposite to the second conductor (30), so that the A uniform electric field can be generated between the first conductor (14) and the third conductor (27), and between the second conductor (30) and the fourth conductor (28). 3. The electric field force-based metal liquid micro-spray control valve according to claim 2, characterized in that, further comprising a heating mechanism (4) arranged in the housing mechanism (1), the heating mechanism ( 4) to heat the object to be ejected in the cavity (8) to keep it liquid; The receiving mechanism (2) includes a collecting plate (26) facing the outlet (32), and the third conductor (27) and the fourth conductor (28) are respectively arranged on the collecting plate On the left and right sides of the (26), the middle of the collecting plate (26) can be grounded. 4. A metal liquid micro-spray control valve based on electric field force according to claim 1, characterized in that, the housing mechanism (1) further has a open; The partition mechanism (6) includes a sub-chamber seat (12) disposed in the opening and extending toward the interior of the cavity (8), and the sub-chamber seat (12) is used for connecting the cavity (8) ) is divided into the left cavity (10) and the right cavity (9); The inner wall of the cavity (8) is provided with a groove (31) for installing the sub-chamber seat (12). 5. A metal liquid micro-spray control valve based on electric field force according to claim 4, wherein the partition mechanism (6) further comprises a pair of metal plates (15) and a pair of insulating plates (16) ); Installation grooves (17) are respectively provided on both sides of the sub-chamber seat (12) facing the left cavity (10) and the right cavity (9); A pair of said metal plates (15) are respectively arranged at the bottom of a pair of said mounting grooves (17), so as to prevent said left cavity (10) and said right cavity (9) from having opposite charges. An electric field is formed between the objects to be ejected; A pair of the insulating plates (16) are respectively disposed at the openings of the pair of the installation grooves (17), so as to insulate and seal the installation grooves (17). 6. The electric field force-based metal liquid micro-spray control valve according to claim 1, wherein the casing mechanism (1) comprises an upper casing (19), which is arranged on the upper casing (19). 19) the lower casing (24), and a pair of insulating sleeves (18); The upper casing (19) and the lower casing (24) are mutually formed with the cavity (8), and the lower casing (24) is provided with the discharge port (32); A pair of the isolation sleeves (18) are respectively disposed on both sides of the cavity (8) to serve as the side walls of the left cavity (10) and the right cavity (9). 7 . The electric field force-based metal liquid micro-spray control valve according to claim 6 , wherein the housing mechanism ( 1 ) further comprises a nozzle ( 25 ) disposed at the discharge port ( 32 ). 8 . ); The discharge port (32) is provided with a partition plate (33), which is used to separate the discharge port (32) into two flow channels; The nozzle (25) is provided with an injection port with a diameter smaller than that of the material outlet (32), and the injection port is directly opposite to the material outlet (32). 8 . The electric field force-based metal liquid micro-spray control valve according to claim 1 , wherein the charging mechanism ( 3 ) comprises a housing mechanism ( 1 ) that is respectively disposed in the housing mechanism ( 1 ) and directed to the left cavity respectively. 9 . A pair of insulating bases (23) extending inside the body (10) and the right cavity (9), the first charging head (22) and the second charging head (29) are respectively arranged on the insulating bases (twenty three); The insulating base (23) has a through hole for passing the wire to connect to the charging head. 9 . The electric field force-based metal liquid micro-spray control valve according to claim 3 , wherein the heating mechanism ( 4 ) comprises a housing mechanism ( 1 ) that is respectively disposed in the housing mechanism ( 1 ) and directed to the left cavity respectively. 10 . a pair of heat insulation seats (21) extending inside the body (10) and the right cavity (9), and a pair of heating elements (20) respectively arranged on the heat insulation seats (21); the heat insulation The seat (21) is an insulating material; The heat-insulating seat (21) has a through hole for passing a wire to connect to the heating element (20). 10. The electric field force-based metal liquid micro-spray control valve according to any one of claims 1 to 9, wherein the electric field mechanism (7) comprises a mechanism (6) that is respectively arranged on the partition plate a pair of mounting seats (13), and a pair of insulating sleeves (11) disposed on the partition mechanism (6) and extending toward the mounting seats (13) respectively; The mounting seat (13) is an insulating material; the first conductor (14) and the second conductor (30) are plate-like geometry; The first conductor (14) and the second conductor (30) are respectively arranged on a pair of the mounting seats (13); The insulating sleeve (11) has a through hole for the wire to pass through to connect to the conductor.

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