CN112170831A

CN112170831A - Metal needle or metal particle production equipment

Info

Publication number: CN112170831A
Application number: CN202011055617.5A
Authority: CN
Inventors: 陈松; 严嘉明; 吴伟平
Original assignee: Vital Materials Co Ltd
Current assignee: Jiangsu Pioneer Microelectronics Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-05

Abstract

The present disclosure provides a metal needle or metal grain production apparatus, including: hot melting device, forming device, transmission device, drying system and control system, wherein: the hot melting device is used for melting metal and pumping molten metal to the forming device; the forming device is connected with the hot melting device, is used for forming metal needles or metal particles and comprises a vibration motor; the transmission device is connected with the forming device and used for transmitting the metal needles or the metal particles; the drying system is connected with the transmission device and comprises a three-stage drying system of an air knife system, a hot air drying system and a cold air drying system; the control system is respectively in communication connection with the hot melting device, the forming device, the transmission device and the drying system. The production of metal needles or metal particles with different materials and specifications can be automatically completed; the vibration motor in the forming device can control the length of the metal needle and the size of the metal particles; and the three-stage drying system in the drying system improves the drying efficiency of the product, and simultaneously ensures that the surface is smooth and flat and improves the product quality.

Description

Metal needle or metal particle production equipment

Technical Field

The disclosure relates to the field of rare metal processing, in particular to metal needle or metal particle production equipment.

Background

In the production process of metal products such as bismuth, cadmium, antimony, indium and the like, a metal ingot is usually produced into corresponding metal needles or metal particles, so that the subsequent preparation of corresponding metal products can be facilitated.

However, the existing metal needle or metal particle production equipment has poor automation degree, mostly needs manual intervention, has poor consistency of sizes and shapes of the produced metal needles or metal particles, is easy to distort the surface of a product, has poor quality of the product, low production efficiency and low productivity, and cannot meet the demand of orders developed and increased at a rapid speed.

Disclosure of Invention

In view of the defects in the prior art, an object of the present disclosure is to provide a metal needle or metal pellet production apparatus, which can automatically complete the production process of metal needles or metal pellets of different materials and different specifications, and improve the product quality.

In some embodiments, the present disclosure provides a metal needle or metal shot production apparatus comprising: hot melting device, forming device, transmission device, drying system and control system, wherein: the hot melting device is used for melting metal and pumping molten metal to the forming device; the forming device is connected with the hot melting device and used for forming the metal needle or the metal particle, and comprises a vibration motor which enables the forming device to vibrate at a certain frequency; the transmission device is connected to forming device for transmit metal needle or metal grain, and transmission device includes: the inclined conveyor is arranged on the forming device and is used for lifting and taking the formed metal needles or metal particles away from the forming device; the vibrating conveyor is connected with the inclined conveyor and is used for vibrating and conveying the metal needles or the metal particles; the drying system is connected with the transmission device and comprises a three-stage drying system of an air knife system, a hot air drying system and a cold air drying system; the control system is respectively in communication connection with the hot melting device, the forming device, the transmission device and the drying system.

In some embodiments, the heat staking device includes: a melting furnace for melting metal; and the metal solution pump is connected with the melting furnace and the molding device so as to pump the molten metal into the molding device.

In some embodiments, the molding apparatus further comprises: a solution tank for containing molten metal; the mesh plate is arranged at the bottom of the solution tank and is used for preliminarily forming the metal needles or the metal particles; the constant-temperature water tank is arranged below the solution tank and is used for solidifying and forming the metal needles or the metal particles; and the solution tank bracket is arranged on the constant-temperature water tank and used for supporting the solution tank.

In some embodiments, the molding apparatus further comprises: a reflux tank which is separated from the solution tank by a partition plate to contain the metal liquid overflowing from the solution tank; and the return pipe is connected with the return tank and the hot melting device so as to return the molten metal in the return tank to the hot melting device.

In some embodiments, the molding apparatus further comprises: and the compression spring is arranged between the solution tank and the solution tank bracket so as to enable the solution tank to vibrate uniformly.

In some embodiments, the inclined conveyor comprises: a horizontal part which is positioned below the water surface of the constant-temperature water tank and enables the formed metal needles or metal particles to fall on the horizontal part; and an inclined part connected to the horizontal part to lift the metal needles or metal particles falling into the horizontal part and to take them away from the constant temperature water bath.

In some embodiments, an air knife system is provided on the inclined conveyor to blow dry the surface of the metal needles or metal particles with cooling water.

In some embodiments, a hot air drying system comprises: the hot air blower is used for providing hot air; and the hot air port is arranged on the surface of the vibration conveyor so as to further dry the metal needles or the metal particles in the vibration transmission process.

In some embodiments, a cold air drying system comprises: the air cooler is used for providing cold air; and the cold air port is arranged at the outlet end of the vibrating conveyor to cool the metal needles or the metal particles by cold air.

In some embodiments, the metal needle or metal grain production apparatus further comprises: and a constant temperature water circulation system for keeping the temperature of water in the constant temperature water tank constant.

The beneficial effects of this disclosure are as follows: the control system is respectively in communication connection with the hot melting device, the forming device, the transmission device and the drying system, so that the metal needle or metal particle production equipment can automatically complete metal needle or metal particle production; a vibration motor in the forming device which enables the forming device to vibrate at a certain frequency enables the length of the metal needle and the size of the metal particles to be controllable; the drying system comprises a three-level drying system comprising an air knife system, a hot air drying system and a cold air drying system, so that the drying efficiency of the product is improved, the surface is smooth and flat, and the product quality is improved; through the combination of different shaping conditions in forming device 2, can produce the metal needle or the metal grain of different materials, different specifications, the range of application is wide, realizes the multi-purpose function of a tractor.

Drawings

Fig. 1 is a schematic view of a metal needle or metal shot production apparatus according to the present disclosure.

FIG. 2 is a front view of a molding apparatus according to the present disclosure that does not include a constant temperature water bath.

FIG. 3 is a top view of a molding apparatus according to the present disclosure that does not include a constant temperature water tank.

Fig. 4 is a schematic perspective view of fig. 2 at another angle.

Fig. 5 is a schematic perspective view of the reflux tank.

Fig. 6 is a partial exploded view of fig. 2.

Fig. 7 is a schematic perspective view of a thermostatic water bath and an inclined conveyor according to the present disclosure.

Wherein the reference numerals are as follows:

100 metal needle or metal grain production facility

1 Hot melting device

11 melting furnace

12 metal solution pump

2 Forming device

21 vibration motor

22 solution tank

23 mesh plate

24 constant temperature water tank

241 water baffle

242 water inlet

243 striker plate

25 solution tank bracket

26 reflux tank

261 baffle plate

27 return pipe

28 compression spring

3 transmission device

31 inclined conveyer

311 horizontal part

312 inclined part

32 vibration conveyer

4 drying system

41 air knife system

42 hot air drying system

421 air heater

422 hot air port

43 Cold air drying system

431 air cooler

432 cold air outlet

5 constant temperature water circulation system

51 circulating pump,

52 first heat exchanger

53 second heat exchanger

54 groove liquid circulating water pipe

55 tap water pipe

56 cooling water pipe

57 steam pipe

F1-F11 and F55 ball valve

F12 cold water valve

M1 first steam valve

M2 second steam valve

Detailed Description

The accompanying drawings illustrate embodiments of the present disclosure and it is to be understood that the disclosed embodiments are merely examples of the disclosure, which can be embodied in various forms, and therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure.

Referring to fig. 1, a metal needle or metal grain producing apparatus 100 includes: a hot melting device 1, a forming device 2, a conveying device 3, a drying system 4 and a control system (not shown in the figure). The control system is in communication connection with the hot melting device 1, the forming device 2, the transmission device 3 and the drying system 4 respectively, so that the metal needle or metal particle production equipment 100 can automatically complete metal needle or metal particle production, metal needles or metal particles of different materials and specifications can be produced through combination of different forming conditions in the forming device 2, the application range is wide, and the function of one machine with multiple purposes is realized.

In some embodiments, among others, the hot melting device 1 is used to melt metal and pump molten metal into the forming device 2; the hot melting apparatus 1 includes a melting furnace 11 and a metal solution pump 12. In some embodiments, the melting furnace 11 is an electric heating furnace, and the ideal process temperature of the heating system of the melting furnace 11 is 100-800 ℃, so as to ensure that metals with different melting points can be melted. The metal solution pump 12 is a special pump, can resist temperature of 500-1000 ℃, and has a wide temperature-resistant range.

In some embodiments, referring to fig. 1 to 6, a forming device 2 is connected to the heat fusion device 1 for metal needle or metal particle forming. The forming device 2 comprises a vibration motor 21 which can make the forming device vibrate at a certain frequency, and the length of the metal needle and the size of the metal particles can be controlled; in addition, the molding apparatus 2 further includes a solution tank 22 for containing molten metal; a mesh plate 23 disposed at the bottom of the solution tank 22 for preliminarily forming the metal needles or metal particles; a constant temperature water tank 24 provided below the solution tank 22 for solidifying and molding the metal needles or metal particles; a solution tank support 25 mounted on the constant-temperature water tank 24 for supporting the solution tank 22; a reflux tank 26 separated from the solution tank 22 by a partition plate 261 and configured to receive the molten metal overflowing from the solution tank 22; a return pipe 27 connected to the return tank 26 and the hot melting device 1 to return the molten metal in the return tank 26 to the hot melting device 1; and a compression spring 28 disposed between the solution tank 22 and the solution tank holder 25 to uniformly vibrate the solution tank 22.

In some embodiments, the mesh plates 23 are double-layered, the upper layer of mesh plates 23 is thinner and has a thickness of 0.2mm to 3mm, the mesh diameter of the upper layer of mesh plates 23 is 0.2mm to 8mm, and the size of the pore diameter determines the specification and the external dimension of the metal needle or metal particle product; the lower layer of mesh plate 23 is thicker, the thickness is 2mm-10mm, and the mesh plate is used for bearing load and preventing the large-specific gravity solution in the solution tank 22 from crushing the mesh plate. In some embodiments, the mesh diameter of the lower mesh plate 23 is 3mm-20mm, the upper mesh plate 23 is stacked right above the lower mesh plate 23, and the meshes of the lower mesh plate 23 and the meshes of the upper mesh plate 23 are concentric circular holes corresponding to each other one by one.

In some embodiments, the height from the solution tank bracket 25 to the liquid surface of the thermostatic water tank 24 is in the range of 50mm-300mm, the height also directly determines the size and shape of the metal needle or metal particle, and the solution tank bracket 25 can be adjusted by moving up and down;

in some embodiments, referring to fig. 6, the backflow tank 26 is separated from the solution tank 22 by a partition 261, and after the metal solution pump 12 pumps the metal solution into the solution tank 22, when the solution tank overflows due to overfilling, the overflowing metal solution falls into the backflow tank 26 and flows back into the melting furnace 11 through the backflow pipe 27 to be reheated for use, thereby preventing the occurrence of safety problems such as leakage of the metal solution due to overflowing.

The liquid level in the solution tank 22 increases with the increase of the height of the partition 261, the height of the partition 261 is 80mm-200mm, the height is different, the productivity is different, the diameter of the produced metal needle or metal particle is different, that is, the diameter of the metal needle or metal particle is related to the height of the partition 261 in addition to the mesh diameter of the mesh plate 23.

In some embodiments, the reflux pipe 27 is provided with heat insulation cotton and a heating rod to prevent the reflux pipe from being blocked by cooling and solidification, so that the metal solution can be continuously circulated, the optimal process temperature can be constantly maintained, the metal solution in the solution tank 22 is constantly ensured to be in a full state, the uniform pressure of the metal solution falling from the mesh plate 23 is ensured, and the uniform consistency of the needle making and the granulating is ensured. In addition, when having the solidification metal in forming device 2 after using, need not dismantle forming device 2, only need open the solution pump, make high temperature metal flow into forming device 2, constantly flow back to the melt furnace through the back flow pipe, at this in-process, the metal liquid melts the metal that solidifies in original forming device 2 gradually from the high temperature in area, whole process need not to dismantle clearance forming device 2, it is very convenient safe high-efficient, the circulation structure that metal solution pump 12 and back flow 27 are constituteed has solved the problem that how the metal temperature keeps high temperature constantly and prevents to solidify in forming device 2.

In some embodiments, referring to fig. 2 to 4, the vibration motor 21 is disposed outside the solution tank 22, the mesh plate 23 is disposed at the bottom of the solution tank 22 through a stainless steel screw, and the mesh plate 23 is replaceable, so that the needle making and granulating functions of the forming device 2 are realized through the vibration of the vibration motor 21 and the meshes on the mesh plate 23.

When the metal needle is produced, the high-temperature metal liquid forms a metal wire to flow out of the mesh, the forming device 2 vibrates by adjusting the vibration frequency of the vibration motor 21, the mesh plate 23 vibrates to break the falling metal needle, the vibration frequency is adjusted according to actual requirements during production, the length of the metal needle is controlled, and the accuracy can be within 2 mm; when metal particles are produced, the forming device 2 vibrates at high frequency, so that metal is thrown off from the mesh plate, is not adhered and has consistent shape; different vibration frequencies and different metal solution temperatures can obtain products with different specifications, and different metal needles or metal particles with different lengths, sizes and shapes can be obtained by replacing the mesh plate 23 with meshes with different sizes and shapes and adjusting the vibration frequency of the vibration motor 21. In addition, the compression spring 28 makes the vibration transmission of the vibration motor 21 more uniform and stable, and ensures the length, shape and size uniformity of the metal needle or metal particle product. The installation of the compression spring 28 is extremely convenient: the positioning rods at the bottom of the solution tank 22 and the top of the solution tank support 25 extend into the compression spring 28 respectively, are not fixed by bolts, can be stably installed on the solution tank support 25, and can be taken out only by lifting up the solution tank 22 when the compression spring 28 is disassembled.

Referring to fig. 1 and 7, the preliminarily formed metal needles or metal particles falling from the mesh plate 23 are solidified and formed after falling into the constant temperature water bath 24. The constant-temperature water tank 24 can adjust the constant water temperature according to the technological requirements, the adjusting range is 10-95 ℃, the temperature adjustment can be accurate to +/-2 ℃, the water temperature determines the solidification state of metal needles or metal particles, if the water temperature is too low, the high-temperature solution falls into the water to cause rapid cooling, the temperature difference between the inside and the outside of the solution is too large, and the solution is burst and cracked in the water tank and is not shaped or crushed and formed; on the contrary, if the water temperature is too high, normal solidification and molding cannot be realized.

The temperature of constant temperature basin 24 is realized through the cold and hot circulating water, that is to say, there is continuous hot water and cold water rivers to carry in the constant temperature basin 24, has still designed breakwater 241 in the constant temperature basin very much, prevents that rivers from impacting the product too greatly, destroys the shape of product, avoids rivers to impact the product and leads to the cooling to solidify unusually, and the shaping is bad.

In some embodiments, referring to FIG. 7, a water inlet 242 is provided in an end wall of the thermostatic water bath 24. Referring to fig. 2 and 4, the water baffles 241 are arranged below the solution tank support 25 and extend into the constant temperature water tank 24, the number of the water baffles 241 is 3, the 3 water baffles 241 surround the corresponding area of the meshes of the mesh plate 23 and are connected to the inside of the constant temperature water tank 24, and the constant temperature water is blocked by the water baffles 241 to impact water flow, so that when a metal needle or metal particles fall, the water surface is stable and gentle, which is beneficial to the consistency of the metal needle or metal particle molding and plays a crucial role in the appearance of the product.

In some embodiments, the constant temperature water bath 24 is further provided with material baffles 243, referring to fig. 7, the material baffles 243 are arranged on the inner sides of the two side walls of the constant temperature water bath 24, and the two material baffles 243 surround the horizontal part 311 of the inclined conveyor 31 described below, so as to ensure that the metal needle or metal particle product can only fall onto the inclined conveyor 31 described below, and improve the conveying efficiency of the metal needle or metal particle product.

In some embodiments, a transfer device 3 is connected to the forming device 2 for transferring the metal needles or metal particles, and the metal needles or metal particles are collected at the end of the transfer device 3. Referring to fig. 1 and 7, the transmission device 3 includes: an inclined conveyor 31 provided to the forming device 2 to lift the formed metal needles or metal particles away from the forming device 2; and a vibration conveyor 32 connected to the inclined conveyor 31 for vibration-conveying the metal needles or metal particles.

In some embodiments, the inclined conveyor 31 comprises: the horizontal part 311 is positioned below the water surface of the constant-temperature water tank 24, so that the formed metal needles or metal particles fall on the horizontal part, and the horizontal part 311 ensures that the time for the metal needles or metal particles to reach the inclined conveyor 31 after falling into the water is the same, so that the consistency of the length, the shape, the size and the quality of each product is ensured; and an inclined part 312 connected to the horizontal part 311 to lift the metal needles or metal particles falling into the horizontal part 311 and to take them away from the constant-temperature water bath 24, the inclined part 312 having an inclination angle of 15-30 °, and a conveying speed thereof being adjustable according to actual requirements.

Jigging conveyer 32 makes metal needle or metal grain vibration transmission, the violent collision among the product transmission process has been reduced, in some embodiments, jigging conveyer 32 is the vibrated fluidized bed structure, vibrated fluidized bed has directional vibrating motor, make metal needle or metal grain throw along the horizontal fluidized bed, forward continuous motion, the range is very little, the speed of advance of metal needle or metal grain is unanimous basically, prevent effectively that the material from scurrying, avoid metal needle or metal grain fracture and collapse in transmission process, jigging conveyer 32 not only can evenly transmit, can also adjust different transmission speed according to the demand of difference, make subsequent packing process can better handle the accuse.

In some embodiments, the drying system 4 is connected to the conveying device 3, and includes a three-stage drying system including an air knife system 41, a hot air drying system 42, and a cold air drying system 43; referring to fig. 1 and 7, an air knife system 41 is disposed on the inclined portion 312 of the inclined conveyor 31 to dry the surface of the metal needles or metal particles with cooling water, thereby preventing the surface of the product from being distorted and having water marks during high-temperature drying. The hot air drying system 42 includes: the hot air blower 421 is used for providing hot air, the control system automatically controls the on-off of the second steam valve M2, when the temperature in the hot air blower 421 is lower than a set value, the second steam valve M2 is automatically opened, steam enters the hot air blower 421 to heat air, and therefore hot air is blown into the hot air port 422; and the hot air port 422 is arranged on the surface of the vibrating conveyor 32 so as to further dry the metal needles or the metal particles by utilizing hot air in the vibrating transmission process. The cold air drying system 43 includes: an air cooler 431 for supplying cool air; cold wind mouth 432 sets up in vibratory conveyor 32 exit end to carry out cold wind cooling to metal needle or metal grain, when improving product drying efficiency, make the surface smooth and level, improve product quality.

The air knife system 41 is a compressed air drying system, that is, the metal needles or metal particles with cooling water on the inclined conveyor 31 are blown by compressed air, and the metal needles or metal particle products are primarily dried; the air inlet is arranged on the vibration conveyor and comprises four hot air ports 422 positioned at the front end and a cold air port 432 positioned at the outlet end, hot air is introduced into the hot air ports 422 through the hot air fan 421, the temperature of the hot air is controlled to be 80-100 ℃, and cold air is introduced into the cold air port 432 through the cold air fan 431.

Air heater 421 adopts steam heating to obtain hot-blastly, compares in electrical heating drying system, and hot air drying system 42 combines vibratory conveyors 32, and is dry through vibration transmission and heat-seal for the better drying rate of drying effect is faster, and hot-blastly can be weathered the water mark on metal needle or metal grain product surface rapidly, and hot-blast vapor is taken out the exhaust chamber by the tail gas exhaust column outdoor, makes just dry completely before metal needle or metal grain product reachs vibratory conveyors 32 export. And a cold air drying system 43 is arranged at the outlet end of the vibrating conveyor 32, and the metal needles or metal particles dried by the hot air drying system 42 are cooled by cold air, so that the metal needles or metal particles can be directly weighed, packaged and warehoused from the vibrating conveyor 32.

When the high-temperature metal needles or metal particles fall into the constant-temperature water tank 24 for cooling, a large amount of heat is emitted, cooling water in the constant-temperature water tank 24 can be heated up at a high speed, and the metal needles or metal particles cooled by the subsequent falling into the water are cooled to cause abnormal or unformed cooling effect. For this, the metal needle or metal particle producing apparatus 100 further includes: a constant temperature water circulation system 5 for keeping the temperature of the water in the constant temperature water tank 24 constant.

In some embodiments, with reference to fig. 1, the thermostatic water circulation system 5 comprises a circulation pump 51, a first heat exchanger 52, a second heat exchanger 53, and pipes and valves connected thereto: a bath liquid circulating water pipe 54, a tap water pipe 55, a cooling water pipe 56, a steam pipe 57, ball valves F1-F11, a cold water valve F12, a first steam valve M1 and valves on steam pipelines between the first steam valve M1 and the second heat exchanger 53.

The ball valve F1 on the tap water pipe 55 is opened to supply tap water to the thermostatic water tank 24, and the valve can automatically supply water to a designated height in the thermostatic water tank 24 according to the water level.

Before production, circulating water in the constant-temperature water tank 24 needs to be ensured to be heated to a specified process temperature N ℃ from normal temperature. In an embodiment, referring to fig. 1, F55, F4, F5 and F11 are sequentially closed, and pipeline ball valves F2, F3, F6, F9 and F10 and valves on a steam pipeline are opened, so that the circulating water in the water tank repeatedly passes through the second heat exchanger 53 for heat exchange for many times, and then returns to the constant-temperature water tank 24 after reaching the process requirement temperature N ℃;

after the circulating water reaches the temperature N ℃ required by the process, F6 and F11 are automatically started, F2 and F3 are kept started unchanged, F4, F55, F5, F7, F8, F9 and F10 are closed, and the circulating pump 51 is started, so that the circulating water in the constant-temperature water tank 24 can be independently recycled without passing through a heat exchanger.

When the temperature of the circulating water exceeds 2 ℃ required by the process, namely the temperature of the circulating water exceeds (N +2) DEG C, the circulating water needs to be cooled, F2, F55, F3, F4, F5, F7, F8, F11 and F12 are automatically turned on, F6, F9 and F10 are automatically turned off, the circulating pump 51 is started, and the circulating water in the constant-temperature water tank 24 can be recycled after being subjected to heat exchange and cooling only by the first heat exchanger 52 until the temperature is reduced to the process temperature N ℃.

When the temperature of the circulating water is lower than 2 ℃ which is the process requirement temperature, namely the temperature of the circulating water is lower than (N-2) DEG C, the circulating water needs to be heated, F2, F55, F3, F6, F9, F10 and M1 are automatically turned on, F4, F5, F7, F8, F11 and F12 are automatically turned off, the circulating pump 51 is started, and the circulating water in the constant-temperature water tank 24 can be recycled after only passing through the second heat exchanger 53 until the temperature is raised to the process temperature N ℃.

The valves needing to be frequently opened and closed are all pneumatic valves, are interlocked with the process temperature N ℃ of the constant-temperature water tank, and are opened and closed along with the change of the process temperature N ℃.

The control system controls the on-off of the first steam valve M1 and the cold water valve 12 in the constant-temperature water circulation system 5, and a high-temperature set value or a low-temperature set value is set in the control system, wherein in some embodiments, the high temperature refers to 60-90 ℃ and the low temperature refers to 10-25 ℃. The high temperature is used in the production process of large-particle metal particles or relatively thick metal needles, the low temperature is usually used in the rapid production process of small-particle metal particles or fine metal needles, the cooling temperature is critical to solidification and forming when a high-temperature solution falls into the constant-temperature water tank 24 for cooling, if the cooling temperature is too low, the high-temperature metal solution falls into unsuitable low-temperature water, the temperature difference between the inside and the outside is too large, the metal needles or metal particle products are directly cracked, forming is abnormal, the phenomenon is particularly obvious for large-particle metal particles or relatively thick metal needles, and otherwise, the cooling temperature is too high, and normal solidification and forming cannot be performed.

When the temperature is lower than the set value by 2 ℃, the first steam valve M1 is automatically opened, and when the temperature is higher than the set value by 2 ℃, the first steam valve M1 is automatically closed; when the temperature is higher than the set value by 2 ℃, the cold water valve F12 is automatically opened, and when the temperature is lower than the set value by 2 ℃, the cold water valve F12 is automatically closed. Otherwise, the first steam valve M1 and the cold water valve F12 are not actuated, when the cold water valve F12 is open, cold water passes through the first heat exchanger 52, the cold water valve F12 closes, cold water flows back to the cooling tower (shown in the figure), when the first steam valve M1 is open, steam enters the second heat exchanger 53 through the steam pipe 57, and when the first steam valves M1 and M2 are closed, steam flows back to the steam recovery pipe through the steam pipe 57.

In some embodiments, the first steam valves M1, M2 are two-way valves and the cold water valve F12 is a three-way valve. Through the temperature in thermocouple real time monitoring constant temperature basin 24, constantly adjust circulation temperature through the heat exchanger and realize constant temperature basin 24 circulation system function, in normal production process, only when starting up and in the use constant temperature basin 24 normal water is exothermic and is greater than from the product absorbed heat, just need the heating, in all the other times, constant temperature basin 24 normal water is the heat of absorbing the product all the time, need not heat. The control scheme can accurately control the water temperature in the constant-temperature water tank 24 to be within +/-2 ℃ of the process set value. The degree of automation is high, and the constant temperature of the water in the constant-temperature water tank 24 is really realized.

Thermocouple temperature controllers are also arranged in the melting furnace 11, the solution tank 22 and the hot air drying system 42 so as to monitor the temperature of each process in real time and regulate and control the temperature in time to achieve ideal process parameters.

The process from opening the metal needle or metal particle production apparatus 100 to collecting the metal needle or metal particle product is: opening a heating system of a melting furnace 1 to enable the temperature of the melting furnace 11 to reach an ideal process temperature of 100-800 ℃ → opening a constant-temperature water circulating system 5 to enable the temperature of a constant-temperature water tank 24 to reach a proper process temperature → opening a hot air drying system 42 → opening a cold air drying system 43 → opening a vibration motor 21 and setting a vibration frequency of 20 Hz-40 Hz → opening an inclined conveyor 31 → opening an air knife system 41 → opening a metal solution pump 12 and setting a frequency of 15 Hz-25 Hz, pumping metal solution into the solution tank 22 → adjusting the frequency of the metal solution pump 12 to enable the feeding rate and the overflow rate of the metal solution and the production rate of metal needles or metal particles to be balanced, namely, the liquid level in the solution tank 22 is kept stable → the molding condition of the metal needles or metal particles is observed → the discharging condition of the discharging port of the vibration conveyer 32 is observed → the metal needles or metal particles at the rear end of the vibration conveyer 5 are collected.

The control system is respectively in communication connection with the hot melting device 1, the forming device 2, the transmission device 3 and the drying system 4, so that the metal needle or metal particle production equipment 100 can automatically complete metal needle or metal particle production; a vibration motor 21 in the molding device 2 which enables the molding device to vibrate at a certain frequency enables the length of the metal needle and the size of the metal particles to be controllable; the drying system 4 comprises a three-level drying system including an air knife system 41, a hot air drying system 42 and a cold air drying system 43, so that the drying efficiency of the product is improved, the surface is smooth and flat, and the product quality is improved.

The disclosed metal needle or metal particle production equipment is a set of multifunctional equipment, when producing metal needles or metal particles of different materials, only the inner container of the melting furnace 11, the metal solution pump 12, the clean solution tank 22, the reflux tank 26 and the reflux pipe 27 need to be replaced, the manufacturing cost of most production system equipment is saved, based on the water temperature of the constant-temperature water tank 24, the height from the solution tank support 25 to the liquid level of the constant-temperature water tank 24, the mesh size of the mesh plate 23, the height of the partition plate 261, different combinations of conditions such as the temperature of the metal solution and the like, products of metal needles or metal particles of different materials and different specifications can be produced, and the application is very wide.

The above detailed description describes exemplary embodiments, but is not intended to limit the combinations explicitly disclosed herein. Thus, unless otherwise specified, various features disclosed herein can be combined together to form a number of additional combinations that are not shown for the sake of brevity.

Claims

1. A metal needle or metal shot production apparatus (100), comprising: hot melting device (1), forming device (2), transmission device (3), drying system (4) and control system, wherein:

the hot melting device (1) is used for melting metal and pumping molten metal into the forming device (2);

a forming device (2) connected to the hot melting device (1) for forming a metal needle or metal particles, including a vibration motor (21) for vibrating the forming device (2) at a certain frequency;

the conveying device (3) is connected to the forming device (2) and used for conveying metal needles or metal particles, and the conveying device (3) comprises:

an inclined conveyor (31) provided to the forming device (2) to lift and carry the formed metal needles or metal particles away from the forming device (2);

a vibrating conveyor (32) connected to the inclined conveyor (31) for vibrating and conveying the metal needles or metal particles;

the drying system (4) is connected with the transmission device (3) and comprises a three-level drying system of an air knife system (41), a hot air drying system (42) and a cold air drying system (43);

the control system is in communication connection with the hot melting device (1), the forming device (2), the transmission device (3), the drying system (4) and the control system respectively.

2. The metal needle or metal granulate production plant (100) according to claim 1, characterized in that the hot-melting device (1) comprises:

a melting furnace (11) for melting metal;

and a metal solution pump (12) connected to the melt furnace (11) and the molding device (2) to pump the molten metal into the molding device (2).

3. The metal needle or metal granulate production plant (100) according to claim 1, characterized in that the forming device (2) further comprises:

a solution tank (22) for containing molten metal;

a mesh plate (23) which is arranged at the bottom of the solution tank (22) and is used for preliminarily forming the metal needles or metal particles;

a constant temperature water tank (24) which is arranged below the solution tank (22) and is used for solidifying and molding the metal needle or the metal particle;

and a solution tank support (25) which is mounted on the constant-temperature water tank (24) and used for supporting the solution tank (22).

4. The metal needle or metal granulate production plant (100) according to claim 3, characterized in that the forming device (2) further comprises:

a reflux tank (26) which is separated from the solution tank (22) by a partition plate (261) and is used for accommodating the metal liquid overflowing from the solution tank (22);

and a return pipe (27) which is connected to the return tank (26) and the hot melting device (1) and returns the molten metal in the return tank (26) to the hot melting device (1).

5. The metal needle or metal granulate production plant (100) according to claim 3, characterized in that the forming device (2) further comprises:

and a compression spring (28) arranged between the solution tank (22) and the solution tank bracket (25) to make the solution tank (22) vibrate uniformly.

6. The metal needle or metal grain production plant (100) according to claim 3, characterized in that the inclined conveyor (31) comprises:

a horizontal part (311) which is positioned below the water surface of the constant-temperature water tank (24) and on which the formed metal needles or metal particles fall;

and an inclined part (312) connected to the horizontal part (311) to lift the metal needle or metal particles falling into the horizontal part (311) and carry them away from the constant-temperature water bath (24).

7. The metal needle or metal pellet production plant (100) according to claim 1, wherein an air knife system (41) is arranged on the inclined conveyor (31) for blow drying the surface of the metal needle or metal pellet with cooling water.

8. The metal needle or metal shot production plant (100) according to claim 5, wherein the hot air drying system (42) comprises:

a hot air blower (421) for supplying hot air;

and the hot air port (422) is arranged on the surface of the vibration conveyor (32) so as to further dry the metal needles or the metal particles in the vibration transmission process.

9. The metal needle or metal grain production plant (100) according to claim 5, characterized in that the cold air drying system (43) comprises:

a cold air blower (431) for supplying cold air;

and the cold air port (432) is arranged at the outlet end of the vibrating conveyor (32) to cool the metal needles or the metal particles by cold air.

10. The metal needle or metal shot producing apparatus (100) according to claim 1, wherein the metal needle or metal shot producing apparatus (100) further comprises:

a constant temperature water circulation system (5) for keeping the temperature of the water in the constant temperature water tank (24) constant.