CN216882172U - Electromagnetic drive's liquid metal fluidic device - Google Patents

Abstract

The utility model discloses an electromagnetically driven liquid metal jetting device. The main contents are as follows: the cavity pipe is installed on the top surface of the inner wall of the tank, the spout is installed on the top surface of the right side of the cavity pipe, and a plurality of first The heater is horizontally arranged and installed in the tank body, the lower end of the outer cylinder is installed in the installation hole on the left top surface of the tank body, the insulation layer is installed on the outer side wall of the tank, the nut is installed in the installation hole on the left side of the cavity pipe, the inner cylinder The lower end is installed on the nut, the bottom of the iron core is installed on the top surface of the left side of the tank body, the iron core is in the shape of a seven-tooth comb, the six sets of coils are installed in the grooves on the iron core, and the top cover is installed on the top surface of the outer cylinder. , the top of the inner cylinder is mounted on the top cover, the top of the second heater is mounted on the top cover, and a plurality of third heaters are longitudinally arranged in the tank. The utility model has the advantages of compact structure, convenient installation and maintenance, convenient replacement of the inner cylinder, no leakage of solder, safety and environmental protection.

Description

An electromagnetically driven liquid metal jet device

technical field

The technical field of the electromagnetic pump of the utility model, in particular, particularly relates to an electromagnetically driven liquid metal jet device.

Background technique

The electromagnetic pump is an important device for pumping liquid metal solder in the soldering of electronic parts on the printed circuit board. The commonly used induction electromagnetic pump generates an induced electromagnetic force through a moving electromagnetic field, and the electromagnetic force acts on the liquid metal non-contact to generate a thrust on it, so that the liquid metal flows through the nozzle to the parts to be welded. The moving magnetic field generating part of such an induction electromagnetic pump is generally a three-phase excitation coil wound on an iron core, and a three-phase alternating current is generated by the three-phase coil to generate a moving magnetic field.

However, due to the corrosiveness of the solder, the existing induction electromagnetic pump is likely to cause corrosion of the ferritic stainless steel pipeline, resulting in leakage of the solder in the ferritic stainless steel, affecting its safety and poor environmental performance, and the maintenance and replacement are very complicated. reduce its work efficiency.

Utility model content

The technical problem to be solved by the utility model is that, aiming at the deficiencies in the above-mentioned prior art, an electromagnetically driven liquid metal jetting device is disclosed, which has a compact structure, convenient installation and maintenance, convenient replacement of the inner cylinder, and will not cause solder leakage, safety and environmental protection.

The technical scheme adopted by the utility model to solve the technical problem is as follows: an electromagnetically driven liquid metal jetting device, comprising a tank body, a cavity pipe, a first heater, a thermal insulation layer, a nut, an inner cylinder, an iron core, The outer cylinder, the top cover, the second heater, the coil, the spout and the third heater, the cavity pipe is fixedly installed on the top surface of the inner wall of the tank, and the spout is fixedly installed on the top surface of the right side of the cavity pipe , a plurality of the first heaters are horizontally arranged and installed in the tank body, the lower end of the outer cylinder body is fixedly installed in the installation hole on the top surface of the left side of the tank body, the outer side wall of the tank body is installed with a thermal insulation layer, and the nut It is fixedly installed on the installation hole on the left side of the cavity pipe, the lower end of the inner cylinder is fixedly installed on the nut, the bottom of the iron core is fixedly installed on the top surface of the left side of the tank body, and the iron core is in the shape of a seven-tooth comb. Six groups of the coils are installed in the grooves on the iron core, the top cover is fixedly installed on the top surface of the outer cylinder, the top of the inner cylinder is fixedly installed on the top cover, and the top of the second heater is installed On the top cover, a plurality of the third heaters are longitudinally arranged in the tank.

As a preferred embodiment of the present invention, 8 sets of iron cores are installed on the top surface of the left side of the slot body, and the coils on the iron cores are annular.

As a preferred embodiment of the present invention, the outer cylinder is made of austenitic stainless steel and the inner cylinder is made of ferritic stainless steel.

As a preferred embodiment of the present invention, a plurality of flow-through holes are uniformly distributed along the circumferential direction on the inner cylinder.

As a preferred embodiment of the present invention, the height of the flow hole is 3-6 mm lower than the liquid level at the spout.

As a preferred embodiment of the present invention, the distance between the inner cylinder and the outer cylinder is 2-10 mm.

As a preferred embodiment of the present invention, the tank body, the cavity pipe and the nut are all made of austenitic stainless steel.

As a preferred embodiment of the present invention, the first heater, the second heater and the third heater are all provided with a heating tube sleeve, and the heating tube sleeve is made of austenitic stainless steel.

The electromagnetic system in the utility model is composed of 8 groups of iron cores and 6 groups of coils, the iron core is in the shape of a 7-tooth comb, and the coils are in the shape of a circular ring; the coils are 1/2/3/4/5/6, Among them, 1 and 4 are connected in series, 2 and 5 are connected in series, and 3 and 6 are connected in series, and the three-phase alternating current is connected according to the star connection method; the inner cylinder is concentric with the outer cylinder, the outer cylinder is austenitic stainless steel, and the inner cylinder is ferrite. The outer cylinder is welded on the top surface of the left side of the tank body, the inner cylinder is screwed with the lower inner wall of the left side of the cavity pipe, and the lower inner wall of the cavity pipe is welded with a nut; the cavity at the center of the tank body is The pipe can be square or round, and the heater sleeve is welded in the tank, which is convenient for the installation of the first electric heating pipe, the second heating pipe and the third heating pipe; the tank body, the cavity pipe and the heater sleeve are made of Austrian Sterile stainless steel; the cavity pipeline constitutes the power channel of the electromagnetic pump, the spout and the cavity pipeline are connected by flanges, and the spout has various models and can be replaced.

The working principle of the utility model is as follows: Step 1: After the solder in the tank is heated by a plurality of first heaters and a plurality of third heaters, the molten solder enters the inner barrel through the bottom of the inner barrel, and the inner barrel is heated. A second heater is installed on the upper end of the body to prevent the solder at the top of the inner cylinder from cooling and agglomerating; Step 2: The solder in the inner cylinder enters between the inner cylinder and the outer cylinder through the flow hole, and 1 and 1 of the 6 coils 4 are connected in series, 2 and 5 are connected in series, 3 and 6 are connected in series, and are connected to the three-phase alternating current according to the star connection method, and the solder between the inner cylinder and the outer cylinder is driven to move downward by electromagnetic force; Step 3: Inner cylinder The solder between the body and the outer cylinder enters the left side of the cavity pipe through the left inlet of the cavity pipe, and the solder enters the spout through the cavity pipe. The spout is connected to the top right side of the cavity pipe through a flange. Models can be replaced.

Compared with the prior art, the utility model has the following advantages:

(1) The structure is compact, and the electromagnetic drive components are installed on the upper left of the tank body, which is convenient for installation and maintenance, and is very convenient for disassembly and maintenance, which greatly improves its operation efficiency;

(2) The ferritic stainless steel (inner cylinder) used as the magnetic field circuit is inside the device. Even if it is corroded by lead-free solder, it will not cause leakage of the solder, and it is easy to replace.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a cross-sectional view of the A-A structure of the utility model.

Description of reference numbers:

1: tank, 2: cavity pipe, 3: first heater, 4: insulation layer, 5: nut, 6: inner cylinder, 7: iron core, 8: outer cylinder, 9: top cover, 10 : second heater, 11: coil, 12: spout, 13: third heater.

Detailed ways

The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings and examples:

It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with this technology, and are not used to limit the utility model. The limited conditions of implementation, the modification of any structure, the change of the proportional relationship or the adjustment of the size, all should still fall within the technology disclosed by the present utility model without affecting the effect that the utility model can produce and the purpose that can be achieved. The content must be within the scope of coverage.

At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The applicable scope of the utility model and the change or adjustment of its relative relationship shall be regarded as the applicable scope of the present utility model without substantially changing the technical content.

As shown in FIG. 1 and FIG. 2 , which show the specific embodiments of the present invention, as shown in the figures, an electromagnetically driven liquid metal jetting device disclosed by the present invention includes a tank body 1 and a cavity pipe. 2. The first heater 3, the insulation layer 4, the nut 5, the inner cylinder 6, the iron core 7, the outer cylinder 8, the top cover 9, the second heater 10, the coil 11, the nozzle 12 and the third heater 13 , the cavity pipe 2 is fixedly installed on the top surface of the inner wall of the tank body 1, the nozzle 12 is fixedly installed on the top surface of the right side of the cavity pipe 2, and a plurality of the first heaters 3 are horizontally arranged and installed on the tank body 1, the lower end of the outer cylinder body 8 is fixedly installed in the installation hole on the left top surface of the tank body 1, the heat preservation layer 4 is installed on the outer side wall of the tank body 1, and the nut 5 is fixedly installed on the left side of the cavity pipe 2. On the side mounting holes, the lower end of the inner cylinder 6 is fixedly mounted on the nut 5, and the bottom of the iron core 7 is fixedly mounted on the top surface of the left side of the tank body 1. The coil 11 is installed in the groove on the iron core 7, the top cover 9 is fixedly installed on the top surface of the outer cylinder 8, the top of the inner cylinder 6 is fixedly installed on the top cover 9, the second The top of the heater 10 is mounted on the top cover 9 , and a plurality of the third heaters 13 are longitudinally arranged in the tank body 1 .

Preferably, eight sets of iron cores 7 are installed on the top surface of the left side of the tank body 1 , and the coils 11 on the iron cores 7 are annular.

Preferably, the outer cylinder 8 is made of austenitic stainless steel and the inner cylinder 6 is made of ferritic stainless steel.

Preferably, a plurality of flow-through holes are uniformly distributed on the inner cylinder 6 along the circumferential direction.

Preferably, the height of the flow hole on the inner cylinder 6 is 3-6 mm lower than the liquid level at the nozzle 12 .

Preferably, the distance between the inner cylinder 6 and the outer cylinder 8 is 2-10 mm.

Preferably, the tank body 1, the cavity pipe 2 and the nut 5 are all made of austenitic stainless steel.

Preferably, the first heater 3, the second heater 10 and the third heater 13 are all provided with a heating tube sleeve, and the heating tube sleeve is made of austenitic stainless steel.

The electromagnetic system in the utility model is composed of 8 groups of iron cores 7 and 6 groups of coils 11. The iron core 7 is in the shape of a 7-tooth comb, and the coils 11 are in a circular ring shape; the coils 11 are 1/2/3/4 in order, respectively /5/6, in which 1 and 4 are connected in series, 2 and 5 are connected in series, 3 and 6 are connected in series, and the three-phase alternating current is connected according to the star connection method; the inner cylinder 6 is concentric with the outer cylinder 8, and the outer cylinder 8 is austenite Stainless steel, the inner cylinder 6 is ferritic stainless steel; the outer cylinder 8 is welded on the top surface of the left side of the tank body 1, the inner cylinder 6 is screwed with the lower inner wall of the left side of the cavity pipe 2, and the cavity pipe 2 The lower inner wall is welded with a nut 5; the cavity pipe 2 at the central position in the tank body 1 can be square or circular, and a heater sleeve is welded in the tank body 1, which is convenient for the first electric heating pipe 3 and the second heating pipe 10 and the installation of the third heating pipe 13; the tank body 1, the cavity pipe 2 and the heater sleeve are made of austenitic stainless steel; the cavity pipe 2 constitutes the power channel of the electromagnetic pump, and the spout 12 and the cavity pipe 2 are connected by flanges , the spout 12 has a variety of models, which can be replaced.

The working principle of the present invention is as follows: Step 1: After the solder in the tank body 1 is heated by a plurality of first heaters 3 and a plurality of third heaters 13, the molten solder enters the inner cylinder through the bottom of the inner cylinder 6 Inside the cylinder 6, a second heater 10 is installed on the upper end of the inner cylinder 6 to prevent the solder at the top of the inner cylinder 6 from cooling and agglomerating; Step 2: The solder in the inner cylinder 6 enters the inner cylinder 6 through the flow hole Between the coil and the outer cylinder 8, 1 and 4 are connected in series, 2 and 5 are connected in series, and 3 and 6 are connected in series, and are connected to the three-phase alternating current according to the star connection method, and the inner cylinder 6 and the outer cylinder are driven by electromagnetic force. The solder between the cylinders 8 moves downward; Step 3: The solder between the inner cylinder 6 and the outer cylinder 8 enters the left side of the cavity pipe 2 through the left inlet of the cavity pipe 2, and the solder passes through the cavity pipe 2 Entering the spout 12, the spout 12 is connected with the top right side of the cavity pipe 2 through a flange, and the spout 12 can be replaced with various models.

The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments, within the scope of knowledge possessed by those of ordinary skill in the art, but also without departing from the purpose of the present utility model. make various changes.

Numerous other changes and modifications may be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims (8)

1. An electromagnetically driven liquid metal jetting device, characterized in that: comprising a tank body, a cavity pipe, a first heater, a thermal insulation layer, a nut, an inner cylinder, an iron core, an outer cylinder, a top cover, a first Two heaters, a coil, a nozzle and a third heater, the cavity pipe is fixedly installed on the top surface of the inner wall of the tank, the nozzle is fixedly installed on the top surface of the right side of the cavity pipe, and a plurality of the first heater The device is horizontally arranged and installed in the tank, the lower end of the outer cylinder is fixedly installed in the installation hole on the left top surface of the tank, the outer side wall of the tank is installed with a thermal insulation layer, and the nut is fixedly installed on the left side of the cavity pipe On the installation hole, the lower end of the inner cylinder body is fixedly installed on the nut, the bottom of the iron core is fixedly installed on the top surface of the left side of the tank body, the iron core is in the shape of a seven-tooth comb, and six sets of the coils are installed on the iron core. In the groove on the core, the top cover is fixedly mounted on the top surface of the outer cylinder, the top of the inner cylinder is fixedly mounted on the top cover, the top of the second heater is mounted on the top cover, and a plurality of The third heater is longitudinally arranged in the tank. 2 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein 8 sets of iron cores are installed on the top surface of the left side of the tank body, and the coils on the iron cores are annular. 3 . 3 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein the outer cylinder is made of austenitic stainless steel and the inner cylinder is made of ferritic stainless steel. 4 . 4 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein a plurality of flow-through holes are evenly distributed along the circumferential direction on the inner cylinder. 5 . 5 . The electromagnetically driven liquid metal jet device according to claim 4 , wherein the height of the flow hole is 3-6 mm lower than the liquid level at the nozzle. 6 . 6 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein the distance between the inner cylinder and the outer cylinder is 2-10 mm. 7 . 7 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein the tank body, the cavity pipe and the nut are all made of austenitic stainless steel. 8 . 8 . The electromagnetically driven liquid metal jet device according to claim 1 , wherein the first heater, the second heater and the third heater are all provided with a heating tube sleeve and the heater is heated. 9 . The tube casing is made of austenitic stainless steel.

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