Metal powder preparation system with anti-blocking assembly

Abstract

The utility model provides a metal powder preparation system with an anti-blocking assembly. The system comprises a PLC (Programmable Logic Controller), a blocking assembly connected with the PLC and a powder preparation device, the powder preparation device comprises an intermediate frequency furnace used for melting metal materials, a gas atomization assembly connected with the intermediate frequency furnace and a blocking assembly matched with the gas atomization assembly. The gas atomization assembly comprises a tundish, a flow guide pipe, a spraying disc and an atomization tower which are hermetically communicated from top to bottom; the intermediate frequency furnace is communicated with the tundish; and the blocking assembly is used for penetrating through the tundish under the control of the PLC and blocking the flow guide pipe so as to prevent the molten metal from continuously flowing into the atomization area. The method aims at avoiding the situation that an atomization area is blocked in the alloy powder preparation process, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a metal powder preparation system with an anti-blocking component. Background Art

[0002] At present, with the increasing market demand for metal powder and the upgrading of customer products, the performance requirements for metal powder products are getting higher and higher. In the current industrial production, melting and casting are used. The preparation process includes first adding solid metal raw materials to the medium frequency furnace in a certain proportion, then melting into liquid and tilting the medium frequency furnace, and slowly controlling the tilting speed to control the flow rate of the liquid into the tundish, and passing through the guide tube installed in the tundish, so that the molten metal melt passes through the spray plate, and finally is hit by the high-pressure water jet of the nozzle and broken into powder. However, powder adhesion often occurs during the production process of the atomization area, which can easily cause blockage in the atomization area, prevent further crushing, and even completely block the atomization area, causing the molten metal melt to be unable to flow down to the atomization tower through the spray plate for cooling, resulting in accumulation in the atomization area, setting the spray plate to be submerged, resulting in production interruption, process parameter changes, and performance differences. The existing invention patent with patent publication number CN115509266A discloses a control device for quickly responding to and adjusting the melt flow rate, a control method and its application, which avoids metal level fluctuations above the spray plate by controlling the melt flow rate to improve the fine powder yield of the metal powder, but still cannot effectively solve the problem of blockage in the atomization area. Utility Model Content

[0003] The main purpose of the utility model is to provide a metal powder preparation system with an anti-clogging component, aiming to solve the problem that the atomization area is easily clogged during the alloy powder preparation process in the prior art.

[0004] To achieve the above-mentioned object, the utility model provides a metal powder preparation system with an anti-blocking component, the system comprising a PLC controller, a blocking component connected to the PLC controller, and a powder preparation device;

[0005] The powder preparation device comprises an intermediate frequency furnace for melting metal materials, an aerosol assembly connected to the intermediate frequency furnace, and a plugging assembly matched with the aerosol assembly;

[0006] The gas atomization assembly comprises a tundish, a flow guide pipe, a spray plate and an atomization tower which are sealed and connected from top to bottom;

[0007] The intermediate frequency furnace is connected to the tundish;

[0008] The plugging component is used to pass through the tundish and plug the guide pipe under the control of the PLC controller to prevent the molten metal from continuing to flow into the atomization area.

[0009] Optionally, a plurality of high-pressure water outlets distributed in an annular manner are provided at the outlet below the spray plate, so that the molten metal passing through the spray plate is broken into ultra-fine droplets under the action of high-pressure water.

[0010] Optionally, a pressure sensor is provided in the atomization tower, and the pressure sensor is connected to the PLC controller. The pressure sensor is used to monitor the pressure inside the atomization tower in real time and transmit the pressure to the PLC controller.

[0011] Optionally, the plugging assembly includes a plug and a plug rod.

[0012] Optionally, the plugging rod is composed of a plurality of connecting rod units, and the connecting rod units are connected by connecting pieces.

[0013] Optionally, the plugging rod is also connected to a power piece, and the power piece operates under the control of a PLC controller.

[0014] Optionally, the plug matches the inner diameter of the flow guide tube.

[0015] Optionally, each high-pressure water outlet is connected to a water inlet pipe.

[0016] Optionally, the tundish and the flow guide tube are detachably connected.

[0017] Optionally, a powder collection tank is also provided below the atomization tower.

[0018] Beneficial effects:

[0019] (1) The use of a metal powder preparation system with an anti-clogging component can effectively block the guide tube, preventing the metal powder from clogging the atomization area and the continued growth of the solidified alloy block in the atomization area. In addition, the spray plate does not need to be disassembled during recovery, avoiding the difficulty of disassembly and maintenance and the long time to resume production.

[0020] (2) A pressure sensor is used to monitor the pressure changes in the atomization area in real time and transmit the information to the PLC system in a timely manner, so that the PLC system can control the operation of the blocking component, that is, automatically close the guide tube, effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1It is a structural schematic diagram of a blocking component of an embodiment of a metal powder preparation system with an anti-blocking component of the utility model;

[0023] Figure 2 It is a partial structural schematic diagram of a powder preparation device of an embodiment of a metal powder preparation system with an anti-clogging component of the utility model;

[0024] Figure 3 for Figure 2 A partial enlarged view of the structure shown.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0026] Description of Figure Numbers:

[0027] Label name Label name 1 Blocking components 2 Powder preparation device 11 Plug 12 Plug rod 13 Connectors 14 Power parts 21 Atomization tower 22 High pressure water outlet 23 Spray plate 24 Flow guide tube 25 Tundish 26 Water inlet pipe 3 Powder collection tank DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] See also Figure 1-3The utility model provides a metal powder preparation system with an anti-blocking component, the system comprising a PLC controller, a blocking component 1 connected to the PLC controller, and a powder preparation device 2.

[0033] Specifically, Figure 1 As shown, the plugging assembly 1 includes a plug 11 and a plug rod 12. The plug 11 is arranged in a structure that is larger at the top and smaller at the bottom, and the plug rod 12 is composed of a plurality of connecting rod units, each of which is connected by a connecting piece 13. The number of the connecting rod units can be adjusted according to actual needs, and the number of the connecting pieces 13 is determined according to the number of the connecting rod units.

[0034] As well as Figure 2 As shown, the powder preparation device 2 includes an intermediate frequency furnace for melting metal materials, an aerosol assembly connected to the intermediate frequency furnace, and a plugging assembly 1 matched with the aerosol assembly; the aerosol assembly includes a tundish 25, a guide pipe 24, a spray plate 23 and an atomizing tower 21 that are sealed and connected from top to bottom; wherein the intermediate frequency furnace is connected to the tundish 25, and as shown Figure 3 As shown, the tundish 25 is also detachably connected to the guide tube 24. In the use state, the plugging component 1 enters the tundish 25 downward along a predetermined route, passes through the molten metal, and is blocked in the guide tube 24 to prevent the molten metal from continuing to flow into the atomization area. After the guide tube 24 is blocked, the solidified alloy block in the atomization area will not continue to grow. When recovering, it is possible to continue production by only lifting the tundish 25 for processing without disassembling the spray plate 23, thereby effectively improving production efficiency.

[0035] Furthermore, a plurality of high-pressure water outlets 22 distributed in an annular manner are provided at the outlet below the spray disc 23. The provision of the plurality of high-pressure water outlets 22 enables the molten metal passing through the spray disc 23 to be broken into ultrafine droplets under the action of high-pressure water, and the ultrafine droplets will be cooled to obtain powder of the target particle size.

[0036] Furthermore, the plugging rod 12 is also connected to a power member 14, and the power member 14 operates under the control of a PLC controller.

[0037] Furthermore, the plug 11 and the plug rod 12 are also detachably connected. Thus, the plug 11 can be replaced as needed, and the size of the plug 11 matches the inner diameter of the flow guide tube 24. Preferably, the plug 11 is in an inverted trapezoidal structure with a larger upper portion and a smaller lower portion.

[0038] Further, a pressure sensor is provided in the atomizing tower 21, and the pressure sensor is connected to the PLC controller, and the pressure sensor is used to monitor the pressure inside the atomizing tower 21 in real time and transmit it to the PLC controller. In actual use, the pressure sensor transmits the detected pressure to the PLC control, and the PLC controller compares the received pressure data with the preset conditions. If the pressure data meets the preset conditions, the PLC controller issues an instruction, that is, controls the plug 11 to enter the tundish 25 downward according to a predetermined route, passes through the molten metal, and is blocked in the guide tube 24, preventing the molten metal from continuing to flow into the atomizing area, thereby ensuring that the solidified alloy block blocked in the atomizing area will not continue to grow, avoiding the difficulty of disassembly and maintenance and the long time to resume production. At the same time, after timely blocking the guide tube 24, the solidified alloy block will not continue to grow, and it can be done without disassembling the spray plate 23 when recovering. For example, the processing time after blocking can be reduced from 1 hour in the prior art to 20 minutes, and the production can continue after the tundish is opened for processing, and the production efficiency is improved, and the economic efficiency is very obvious.

[0039] Furthermore, each high-pressure water outlet 22 is connected to a water inlet pipe 26. The water inlet pipe 26 is connected to an external pressurized water storage device.

[0040] Furthermore, a powder collecting tank 3 is provided below the atomizing tower 21 , and the powder collecting tank 3 is used to collect the cooled target powder.

[0041] In addition, in order to better illustrate the structural setting of this system, the following is a detailed description through a specific process:

[0042] In the metal gas atomization preparation process, the metal materials are first loaded into the medium frequency furnace according to a certain proportion, and the medium frequency furnace is started for the first stage of melting. When the raw materials are completely melted and the temperature reaches the process temperature, casting and atomization begin. The molten metal melt enters the ladle 25 through the flow channel of the medium frequency furnace, and then flows through the guide pipe 24 through the spray plate 23 into the atomization area. In the atomization area, it is hit and broken by a high-pressure water jet and flows into the atomization tower 21 together with the water. Among them, the molten metal accumulates on the pipe wall in the atomization area due to various reasons and cannot slide into the powder collection tank 3 under the atomization tower 1. That is, if there is powder adhesion during the production process of the atomization area, it is easy to cause blockage in the atomization area, so that the high-pressure water jet is sprayed on a large amount of solidified deposited alloy piles, the water flow rate is greatly reduced, and the suction is reduced. At this time, the pressure sensor in the atomization area can detect the pressure change data and transmit it to the PLC controller. When the pressure data reaches the preset conditions, the PLC controller issues an instruction, that is, controlling the blocking component 1 to enter the intermediate ladle 25 downward along a predetermined route, pass through the molten metal, and block in the guide tube 24, preventing the molten metal from continuing to flow into the atomization area, thereby ensuring that the solidified alloy block blocked in the atomization area will not continue to grow, and during recovery, it is possible to do not need to disassemble the spray plate 23, only need to lift the intermediate ladle 25 for processing and then continue production, avoiding the difficulty of disassembly and maintenance, and the situation where the production recovery time is too long, effectively improving production efficiency.

[0043] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or system including the element. The serial numbers of the above-mentioned embodiments of the utility model are for description only and do not represent the advantages and disadvantages of the embodiments.

[0044] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A metal powder preparation system with an anti-clogging component, characterized in that: The system comprises a PLC controller, a blocking component (1) connected to the PLC controller, and a powder preparation device (2); The powder preparation device (2) comprises a medium frequency furnace for melting metal materials, an aerosol assembly connected to the medium frequency furnace, and a plugging assembly (1) matched with the aerosol assembly; The gas atomization assembly comprises a tundish (25), a flow guide pipe (24), a spray plate (23) and an atomization tower (21) which are sealed and connected from top to bottom; The intermediate frequency furnace is connected to the tundish (25); The blocking component (1) is used to pass through the tundish (25) and block the flow guide pipe (24) under the control of a PLC controller, so as to prevent the molten metal from continuing to flow into the atomization area.

2. The metal powder preparation system with an anti-clogging component according to claim 1, characterized in that: A plurality of high-pressure water outlets (22) distributed in an annular manner are also provided at the outlet below the spray disc (23), so that the molten metal passing through the spray disc (23) is broken into ultra-fine droplets under the action of the high-pressure water.

3. The metal powder preparation system with an anti-clogging component according to claim 1, characterized in that: A pressure sensor is provided in the atomizing tower (21), and the pressure sensor is connected to the PLC controller. The pressure sensor is used to monitor the pressure inside the atomizing tower (21) in real time and transmit the pressure to the PLC controller.

4. The metal powder preparation system with an anti-clogging component according to claim 1, characterized in that: The plugging assembly (1) comprises a plug (11) and a plug rod (12).

5. The metal powder preparation system with an anti-clogging component according to claim 4, characterized in that: The plugging rod (12) is composed of a plurality of connecting rod units, and the connecting rod units are connected via connecting pieces (13).

6. The metal powder preparation system with an anti-clogging component according to claim 4, characterized in that: The plugging rod (12) is also connected to a power member (14), and the power member (14) operates under the control of a PLC controller.

7. The metal powder preparation system with an anti-clogging component according to claim 4, characterized in that: The plug (11) matches the inner diameter of the flow guide tube (24).

8. The metal powder preparation system with an anti-clogging component according to claim 2, characterized in that: Each high-pressure water outlet (22) is communicated with a water inlet pipe (26).

9. The metal powder preparation system with an anti-clogging component according to claim 1, characterized in that: The tundish (25) and the flow guide pipe (24) are detachably connected.

10. The metal powder preparation system with an anti-clogging component according to claim 1, characterized in that: A powder collection tank (3) is also provided below the atomization tower (21).

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