Small metal pelletizer capable of being evacuated and filled with protective gas

Abstract

The utility model relates to the technical field of granulator, specifically relates to a small -size metal granulator of vacuumizing and into the protective gas, including machine body, the machine body is equipped with smelting mechanism and cooling mechanism, and smelting mechanism output end is connected with cooling mechanism. Smelting mechanism includes smelting box, the sealing cover is installed on the smelting box upper end, and inside installation has graphite crucible, electric telescopic support;Electric telescopic support is equipped with electric stirring device and temperature probe. Cooling mechanism includes cooling water tank and circulating water tank, and the circulating water pump is installed to the cooling water tank outside right side, and the metal particle storage ware is installed to the inside middle area, and the wet -type heating coil is installed to left side;The circulating water tank inside middle area installs cooling copper pipe, and the bottom is equipped with wet -type heating coil. The small -size metal granulator of vacuumizing and into the protective gas provided by the application can improve the laboratory granulation efficiency, shorten the experimental period, save the cost of the experiment.

Description

Technical Field

[0001] This utility model relates to the field of granulator technology, specifically to a small metal granulator capable of vacuuming and introducing protective gas. Background Technology

[0002] In the process of preparing laboratory metal particles, in addition to ensuring that the preparation efficiency meets the requirements and that the selection of multiple particle sizes is satisfied, it is also necessary to control parameters such as the temperature of the dripping molten metal, the distance between the drip nozzle and the surface of the coolant, the temperature of the coolant, the type of coolant, and whether to evacuate and introduce protective gas to obtain metal particles with different surface qualities. At the same time, when studying doped metal particles, a variety of different samples are usually required. Therefore, the granulation equipment must have a molten metal stirring function to ensure uniform composition, and it must be able to efficiently complete small-batch, multiple-batch granulation tasks.

[0003] Existing metal granulation equipment is mostly designed for industrial mass production. First, the equipment is large in size and occupies a lot of laboratory space, which does not meet the requirements of a compact laboratory layout. Second, the start-up and debugging process is complicated and cannot meet the needs of efficient "small quantity, multiple batches" preparation of metal liquid with stirring in experiments. Utility Model Content

[0004] The purpose of this invention is to provide a small metal granulator that can be vacuumed and purged with protective gas, in order to solve the technical problems of existing industrial granulation equipment being bulky, complex in structure, and having insufficient or inconvenient ability to adjust equipment parameters, thus failing to meet the specific needs of laboratories.

[0005] To achieve the above objectives, this utility model provides a small metal granulator capable of vacuuming and introducing protective gas, comprising a body, the body including a melting mechanism, a cooling mechanism and a base plate, the melting mechanism, the cooling mechanism and the base plate being arranged sequentially from top to bottom, and the output end of the melting mechanism being connected to the cooling mechanism;

[0006] The smelting mechanism includes a smelting box with a sealing cover. Above the sealing cover are a pressure gauge, a pressure relief valve, a temperature measuring pre-embedded sleeve, an air extraction port, and an oxygen content detection port. Inside the smelting box is a graphite crucible with a graphite stopper rod at its center. The bottom conical surface of the graphite stopper rod is adapted to the inner conical surface of the output end of the graphite crucible. An induction coil is installed on the outside of the graphite crucible. An electric telescopic support is also installed inside the smelting box.

[0007] The cooling mechanism includes a cooling water tank and a circulating water tank. The cooling water tank has a metal granule storage device installed in the middle area, a wet heating coil installed on the left side, a temperature measuring pre-embedded sleeve installed on the rear side, and a water level gauge and air inlet installed on the left side. A one-way valve is installed at one end of the air inlet. A circulating water pump is installed on the right side of the cooling water tank. The inlet of the circulating water pump is connected to a cooling copper pipe, and the outlet is connected to the upper inlet of the cooling water tank. The circulating water tank is connected to the right side of the cooling water tank via a snap-fit. A transparent cover is installed on the top of the circulating water tank, a cooling copper pipe is installed in the middle area inside, and a wet heating coil is installed at the bottom. One end of the cooling copper pipe is connected to the inlet of the circulating water pump, and the other end is connected to the lower drain outlet of the cooling water tank.

[0008] The electric telescopic support is equipped with an electric stirring device and a temperature probe. The temperature probe is placed in the center of the graphite stopper rod and contacts its lower end. The electric telescopic support is composed of multiple perforated irregularly shaped stainless steel components.

[0009] The base plate is a rectangular stainless steel plate with a certain thickness, and support feet are installed on the bottom of the base plate.

[0010] The base plate is provided with a pair of horizontal guide rails and a pair of vertical guide rails. The melting box and sealing cover are installed on the horizontal guide rails by sliders, and the cooling water tank and circulating water tank are installed on the vertical guide rails by sliders.

[0011] The sealing cover and the cooling water tank are both equipped with observation windows, and the melting box, the sealing cover and the cooling water tank are each equipped with a handle.

[0012] The cooling water tank is equipped with a metal particle storage device, which consists of a support and a mesh barrel. The mesh barrel can be vertically inserted into the support and stably locked in place. The support has multiple circular water-permeable holes and one rectangular hole on its wall. The rectangular hole corresponds to the position of the observation window of the cooling water tank. The support has two symmetrically distributed extension arms in the horizontal direction. The ends of the extension arms are adapted to the preset hooks on the inner wall of the cooling water tank, so that the support can be suspended inside the cooling water tank.

[0013] This invention provides a small metal granulator capable of vacuuming and introducing protective gas, along with its usage method. The equipment includes a body comprising a melting mechanism, a cooling mechanism, and a base plate, arranged sequentially from top to bottom. The output end of the melting mechanism is connected to the cooling mechanism. When granulation is required, the metal to be melted is placed into the melting chamber of the melting mechanism. A vacuum is drawn and a protective gas is introduced, followed by heating. After melting, the molten metal is stirred evenly. By adjusting the gap between the graphite stopper rod and the graphite crucible, the molten metal flows under its own weight into a dripping mold, dripping into a cooling water tank where it contacts the coolant and solidifies, completing the granulation process. After completion, the corresponding components are removed, and the metal granules are directly retrieved from the cooling water tank and stored. This invention utilizes an electric stirring device to ensure the stirring function of the molten metal and controllable dripping. Its compact design reduces the size of the melting chamber. A circulating water pump in the cooling mechanism precisely maintains the temperature of the coolant in the cooling water tank, ensuring the consistency of the coolant surface temperature when the molten metal is dripped into the coolant, meeting the requirements of laboratory consistency experiments. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the small metal granulator capable of vacuuming and introducing protective gas according to this utility model.

[0016] Figure 2 This is a side view of a specific embodiment of a small metal granulator capable of vacuuming and introducing protective gas according to this utility model.

[0017] Figure 3 This is a partial cross-sectional structural schematic diagram of a specific embodiment of a small metal granulator capable of vacuuming and introducing protective gas according to this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the electric telescopic support in a specific embodiment of this utility model.

[0019] 1-Main body, 2-Smelting mechanism, 3-Cooling mechanism, 4-Smelting box, 5-Sealing cover, 6-Pressure gauge, 7-Pressure relief valve, 8-Temperature measuring embedded sleeve, 9-Exhaust port, 10-Oxygen content detection port, 11-Graphite crucible, 12-Graphite stopper rod, 13-Induction coil, 14-Electric telescopic support, 15-Cooling water tank, 16-Circulating water tank, 17-Metal granule storage, 18-Wet heating coil, 19-Water level gauge, 2 0-Air inlet, 21-One-way valve, 22-Circulating water pump, 23-Circulating water pump inlet, 24-Cooling copper pipe, 25-Circulating water pump outlet, 26-Cooling water tank upper inlet, 27-Snap fastener, 28-Transparent cover, 29-Cooling water tank lower drain, 30-Electric stirring device, 31-Temperature probe, 32-Base plate, 33-Support foot, 34-Slider, 35-Horizontal guide rail, 36-Vertical guide rail, 37-Observation window. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] This utility model provides a small metal granulator capable of vacuuming and introducing protective gas, including a machine body, which includes a melting mechanism, a cooling mechanism and a base plate, arranged sequentially from top to bottom, and the output end of the melting mechanism is connected to the cooling mechanism;

[0022] The melting mechanism includes a melting box with a sealing cover. Above the sealing cover are a pressure gauge (used for vacuuming and displaying the gas pressure in the cavity when protective gas is introduced), a pressure relief valve (automatically releasing pressure when the gas pressure in the cavity reaches a certain value), a temperature measuring pre-embedded sleeve (for subsequent installation of additional temperature sensors), a vacuum port, and an oxygen content detection port (detecting the oxygen content of the gas in the cavity, indirectly proving the concentration of the introduced protective gas). Inside the melting box is a graphite crucible with a graphite stopper rod at its center. The bottom conical surface of the graphite stopper rod is adapted to the inner conical surface of the output end of the graphite crucible. An induction coil is installed on the outside of the graphite crucible. An electric telescopic support is also installed inside the melting box.

[0023] The cooling mechanism includes a cooling water tank and a circulating water tank. The cooling water tank has a metal granule storage device installed in the middle area, a wet heating coil installed on the left side, a temperature measuring pre-embedded sleeve installed on the rear side, and a water level gauge and air inlet installed on the left side. A one-way valve is installed at one end of the air inlet. A circulating water pump is installed on the right side of the cooling water tank. The inlet of the circulating water pump is connected to a cooling copper pipe, and the outlet is connected to the upper inlet of the cooling water tank. The circulating water tank is connected to the right side of the cooling water tank via a snap-fit. A transparent cover is installed on the top of the circulating water tank, a cooling copper pipe is installed in the middle area inside, and a wet heating coil is installed at the bottom. One end of the cooling copper pipe is connected to the inlet of the circulating water pump, and the other end is connected to the lower drain outlet of the cooling water tank.

[0024] The electrically operated telescopic support is equipped with an electric stirring device and a temperature probe. The temperature probe is positioned at the center of the graphite stopper rod and contacts its lower end. This design reduces the size of the smelting tank while ensuring the stirring function of the molten metal, controllable molten metal dripping, and monitoring of the molten metal temperature. The electrically operated telescopic support is composed of multiple perforated, irregularly shaped stainless steel components, allowing for fine adjustment of the installation position of the stirring paddle and stirring motor along three coordinate axes.

[0025] The base plate is a rectangular stainless steel plate with a certain thickness, and support feet are installed on the bottom of the base plate.

[0026] Specifically, the base plate has multiple threaded holes arranged at preset intervals along its length and width. Support feet are installed on the threaded holes at the four corners, which can not only ensure the installation of the machine body support feet, but also reserve installation holes for subsequent new accessories.

[0027] The base plate is provided with a pair of horizontal guide rails and a pair of vertical guide rails. The melting box and sealing cover are installed on the horizontal guide rails by sliders, and the cooling water tank and circulating water tank are installed on the vertical guide rails by sliders.

[0028] The sealing cover and the cooling water tank are both equipped with observation windows, and the melting box, the sealing cover and the cooling water tank are each equipped with a handle.

[0029] The melting tank and sealing cover are each equipped with a handle on both the left and right sides, while the cooling water tank has two handles on the left side. This design facilitates operation and handling.

[0030] The observation window allows operators to visually inspect the operation of the electric telescopic support through the sealed cover, while simultaneously monitoring the metal pellet forming process through the cooling water tank observation window.

[0031] The cooling water tank is equipped with a metal particle storage device, which consists of a support and a mesh barrel. The mesh barrel can be vertically inserted into the support and stably locked in place. The support has multiple circular water-permeable holes and one rectangular hole on its wall. The rectangular hole corresponds to the position of the observation window of the cooling water tank. The support has two symmetrically distributed extension arms in the horizontal direction. The ends of the extension arms are adapted to the preset hooks on the inner wall of the cooling water tank, so that the support can be suspended inside the cooling water tank.

[0032] Preferably, in this utility model, all stainless steel components are connected by screws through slots and threaded holes, which avoids the problem of installation position deviation caused by processing errors of each stainless steel component.

[0033] The present invention employs a replaceable drip mold between the melting mechanism and the cooling mechanism, thereby improving the efficiency of manufacturing metal particles of different sizes.

[0034] The bottom of the cooling water tank has a drain port with a valve in the middle. This design facilitates quick replacement of the coolant and control of the coolant level.

[0035] Furthermore, high-temperature resistant sealing strips are installed between the sealing cover and the melting box, and between the melting box and the cooling water tank. The sealing cover and the melting box, and the melting box and the cooling water tank are all fixed by fasteners, which facilitates sealing and leak prevention, stable connection and operation and maintenance.

[0036] The following specific examples provide further details. Please refer to them. Figures 1 to 4 :

[0037] This embodiment includes a body 1, which is equipped with a melting mechanism 2 and a cooling mechanism 3. The output end of the melting mechanism 2 is connected to the cooling mechanism 3.

[0038] The smelting mechanism 2 includes a smelting box 4, a sealing cover 5 installed on the smelting box 4, a pressure gauge 6, a pressure relief valve 7, a temperature measuring pre-embedded sleeve 8, an air extraction port 9, and an oxygen content detection port 10 installed on the sealing cover 5, a graphite crucible 11 installed inside the smelting box 4, a graphite stopper rod 12 at the center of the graphite crucible 11, an induction coil 13 installed on the outside of the graphite crucible 11, and an electric telescopic support 14 installed inside the smelting box 4.

[0039] The cooling mechanism 3 includes a cooling water tank 15 and a circulating water tank 16. The cooling water tank 15 has a metal particle storage device 17 installed in the middle area inside, a wet heating coil 18 installed on the left side, a temperature measuring pre-embedded sleeve 8 installed on the rear side outside, and a water level gauge 19 and an air inlet 20 installed on the left side. One-way valve 21 is provided at one end of the air inlet 20. A circulating water pump 22 is installed on the right side of the cooling water tank 15. The inlet 23 of the circulating water pump 22 is connected to the cooling copper pipe 24, and the outlet 25 is connected to the upper inlet 26 of the cooling water tank. The circulating water tank 16 is connected to the outer right side of the cooling water tank 15 by a buckle 27. A transparent cover 28 is installed on the top of the circulating water tank 16, a cooling copper pipe 24 is installed in the middle area inside, and a wet heating coil 18 is installed at the bottom. One end of the cooling copper pipe 24 is connected to the inlet 23 of the circulating water pump 22, and the other end is connected to the lower drain outlet 29 of the cooling water tank.

[0040] The electric telescopic support 14 is equipped with an electric stirring device 30 and a temperature probe 31. The axis of the stirring motor of the electric stirring device 30 is perpendicular to the axis of the stirring paddle. The output end of the stirring motor and the upper end of the stirring paddle transmit power through a pair of bevel gears. The stirring paddle is fixed to the electric telescopic support 14 bracket through a flange bearing. The graphite stopper rod 12 is inserted from the upper end of the stirring paddle and tightened on the electric telescopic support 14 bracket. The electric telescopic support 14 is composed of multiple perforated irregularly shaped stainless steel components, which can realize the micro-adjustment of the installation position of the stirring paddle and the stirring motor in three coordinate axis directions. By micro-adjusting the position of the stirring paddle, the interference problem between it and the graphite stopper rod 12 can be solved, and by micro-adjusting the position of the stirring motor, the bevel gear at the output end of the stirring motor can be tightly meshed with the bevel gear at the upper end of the stirring paddle.

[0041] The base plate 32 is a rectangular stainless steel plate 500mm long, 450mm wide, and 5-10mm thick. Multiple threaded holes are arranged at preset intervals along both its length and width. Support feet 33 are installed in the threaded holes at the four corners. This design ensures the installation of the support feet 33 on the main body 1 while also reserving mounting holes for future accessories. In practice, the diameter of the threaded holes on the base plate used to install the support feet 33 can be determined based on the fixing threaded hole diameter of the support feet 33; and the number of support feet 33 can be increased or their installation position adjusted according to the specific load-bearing requirements. The diameters of the remaining threaded holes can be determined based on the accessories.

[0042] Four sliders 34 are installed on each of the front and rear sides of the melting tank 4. Four sliders 34 are installed on the rear side of the sealing cover 5, and two sliders 34 are installed on the front side. Four horizontal guide rails 35, each 800mm long, pass through the sliders 34 and are vertically installed on the bottom transition steel plate of the machine body 1. The sealing cover 5 opens and closes through the sliding engagement of the sliders 34 and the horizontal guide rails 35. Four sliders 34 are installed on the bottom of the cooling water tank 15, and two sliders 34 are installed on the bottom of the circulating water tank 16. Two vertical guide rails 36, each 500mm long, pass through the sliders 34 and are horizontally installed on the bottom plate 32 of the machine body 1. The cooling water tank 15 and the circulating water tank 16 move horizontally through the sliding engagement of the sliders 34 and the vertical guide rails 36. At the same time, a 50mm long handle is installed on each of the left and right sides of the melting tank 4 and the sealing cover 5. Two 50mm long handles are installed at 80mm intervals along the horizontal direction on the bottom left side of the cooling water tank 15.

[0043] A rectangular observation window 37 is provided in the middle of the front side of the sealing cover 5, and a rectangular observation window 37 is also provided in the upper front side of the cooling water tank 15. Both observation windows 37 are made of transparent high-temperature resistant quartz glass.

[0044] The cooling water tank 15 is equipped with a metal particle storage device 17, which consists of a support and a mesh container. The mesh container can be vertically inserted into the support and stably locked in place. The support wall has multiple circular water-permeable holes with a diameter of 15mm and a rectangular hole with a length of 30mm and a width of 55mm. The rectangular hole corresponds to the position of the observation window 37 of the cooling water tank. The support has two symmetrically distributed extension arms in the horizontal direction. The ends of the extension arms are adapted to the pre-set hooks on the inner wall of the cooling water tank 15, so that the support can be suspended inside the cooling water tank 15. This design allows the observation of the metal particle dripping through the observation window 37 of the cooling water tank 15 without being blocked by the metal particle storage device 17, and allows for rapid drainage of water when the prepared metal particles are removed. In fact, the support and mesh barrel of the metal particle storage 17 are both made of 304 stainless steel. The number, distribution density and specific specifications of the circular water-permeable holes on the support wall can be adjusted according to the water permeability and observation requirements of the support. At the same time, the height, diameter and mesh aperture of the mesh barrel can be adjusted according to the amount of metal particles prepared at one time.

[0045] In summary, this utility model has the following beneficial effects:

[0046] 1. The electric stirring device of this utility model is installed on the electric telescopic support bracket. The design is compact. While ensuring the stirring function of molten metal and the controllable dripping of molten metal, the size of the melting box is reduced. Moreover, the connection of each stainless steel component is fastened with screws through slotted holes and threaded holes, which avoids the problem of installation position deviation caused by the processing error of each stainless steel component.

[0047] 2. With the fixed structure of the drip mold and the effect of the multi-hole mold, the drip mold can be quickly replaced, thereby improving the efficiency of manufacturing metal particles of different sizes.

[0048] 3. In this utility model, the bottom of the cooling water tank is provided with a drain outlet with a valve in the middle, which facilitates the rapid replacement of coolant and the control of the liquid level.

[0049] 4. In this utility model, a high-temperature resistant sealing strip is installed between the sealing cover and the melting box, and between the melting box and the cooling water tank. The sealing cover and the melting box, and between the melting box and the cooling water tank are all fixed by buckles, which is conducive to sealing and preventing leakage, stable connection and operation and maintenance.

[0050] 5. This utility model, through the design of a circulating water tank and a circulating water pump, can accurately maintain the temperature of the coolant in the cooling water tank, ensuring the consistency of the coolant surface temperature when molten metal is dripped into the coolant, thus meeting the requirements of laboratory consistency experiments.

[0051] The above description discloses only one or more preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A small metal granulator capable of vacuuming and introducing protective gas, comprising a body, characterized in that, The machine body includes a melting mechanism, a cooling mechanism, and a base plate, which are arranged sequentially from top to bottom. The output end of the melting mechanism is connected to the cooling mechanism. The smelting mechanism includes a smelting box with a sealing cover. Above the sealing cover are a pressure gauge, a pressure relief valve, a temperature measuring pre-embedded sleeve, an air extraction port, and an oxygen content detection port. Inside the smelting box is a graphite crucible with a graphite stopper rod at its center. The bottom conical surface of the graphite stopper rod is adapted to the inner conical surface of the output end of the graphite crucible. An induction coil is installed on the outside of the graphite crucible. An electric telescopic support is also installed inside the smelting box. The cooling mechanism includes a cooling water tank and a circulating water tank. The cooling water tank has a metal granule storage device installed in the middle area, a wet heating coil installed on the left side, a temperature measuring pre-embedded sleeve installed on the rear side, and a water level gauge and air inlet installed on the left side. A one-way valve is installed at one end of the air inlet. A circulating water pump is installed on the right side of the cooling water tank. The inlet of the circulating water pump is connected to a cooling copper pipe, and the outlet is connected to the upper inlet of the cooling water tank. The circulating water tank is connected to the right side of the cooling water tank via a snap-fit. A transparent cover is installed on the top of the circulating water tank, a cooling copper pipe is installed in the middle area inside, and a wet heating coil is installed at the bottom. One end of the cooling copper pipe is connected to the inlet of the circulating water pump, and the other end is connected to the lower drain outlet of the cooling water tank.

2. The small metal granulator capable of vacuuming and introducing protective gas as described in claim 1, characterized in that, The electric telescopic support is equipped with an electric stirring device and a temperature probe. The temperature probe is placed in the center of the graphite stopper rod and contacts its lower end. The electric telescopic support is composed of multiple perforated irregularly shaped stainless steel components.

3. The small metal granulator capable of vacuuming and introducing protective gas as described in claim 2, characterized in that, The base plate is a rectangular stainless steel plate with a certain thickness, and support feet are installed on the bottom of the base plate.

4. The small metal granulator capable of vacuuming and introducing protective gas as described in claim 3, characterized in that, A pair of horizontal guide rails and a pair of vertical guide rails are respectively installed above the base plate. The melting box and sealing cover are installed on the horizontal guide rails by sliders, and the cooling water tank and circulating water tank are installed on the vertical guide rails by sliders.

5. The small metal granulator capable of vacuuming and introducing protective gas as described in claim 4, characterized in that, Both the sealing cover and the cooling water tank are equipped with observation windows, and handles are provided on the melting box, the sealing cover, and the cooling water tank.

6. The small metal granulator capable of vacuuming and introducing protective gas as described in claim 5, characterized in that, The cooling water tank is equipped with a metal particle storage device, which consists of a support and a mesh barrel. The mesh barrel can be vertically inserted into the support and stably locked in place. The support has multiple circular water-permeable holes and one rectangular hole on its wall. The rectangular hole corresponds to the position of the observation window of the cooling water tank. The support has two symmetrically distributed extension arms in the horizontal direction. The ends of the extension arms are adapted to the preset hooks on the inner wall of the cooling water tank, so that the support can be suspended inside the cooling water tank.

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