A composite filter device for alloy powder production

Abstract

The utility model provides a kind of composite filtering device for alloy powder preparation, comprising: main body mechanism, main body mechanism includes filter tank, the surface of filter tank is provided with filter mechanism, tubular filter element is used to filter metal liquid, water spraying part is used to flush tubular filter element surface, scratch mechanism includes scratch element, scratch element is used to scratch tubular filter element surface oxide, the surface of filter tank close to bottom is connected with first liquid inlet pipe, the bottom of filter tank is connected with liquid discharge port, the top of tubular filter element is connected with discharge pipe.The utility model provides a kind of composite filtering device for alloy powder preparation can separate metal powder and liquid by filter mechanism, at the same time, by flushing mechanism, gas back flushing and liquid flushing can be carried out on tubular filter element, and scratch mechanism can be driven to rotate by the pressure of liquid, so that the oxide on the surface of tubular filter element is scraped off, and the impurities are completely removed.

Description

Technical Field

[0001] This utility model relates to the field of alloy powder preparation technology, and in particular to a composite filtration device for alloy powder preparation. Background Technology

[0002] Alloy powders are metallic or alloy granular materials prepared through various processes, with particle sizes typically ranging from micrometers to millimeters. Due to their unique physical, chemical, and mechanical properties, alloy powders are widely used in aerospace, electronics, medical devices, additive manufacturing (3D printing), and other fields.

[0003] In the field of alloy powder preparation, the filtration process plays a crucial role in ensuring powder purity and improving product quality. However, during the filtration process, fine particles of alloy powder are easily embedded in the pores of the candle filter element, forming a dense filter cake. If the alloy liquid contains high-melting-point oxides, the filter cake will be firmly bonded to the surface of the filter element due to sintering, and conventional backwashing is difficult to completely remove it.

[0004] Therefore, it is necessary to provide a composite filtration device for alloy powder preparation to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a composite filtration device for alloy powder preparation, which solves the problem of strong filter cake adhesion and incomplete removal.

[0006] To solve the above-mentioned technical problems, this utility model provides a composite filtration device for alloy powder preparation, comprising: a main body structure, the main body structure including a filter tank, the surface of the filter tank being provided with a filtration mechanism, the filtration mechanism including a tubular filter element, the tubular filter element being used for filtering molten metal;

[0007] A rinsing mechanism, comprising a water spray component for rinsing the surface of a tubular filter element;

[0008] A scraping mechanism, comprising a scraping component for scraping oxides off the surface of a tubular filter element.

[0009] Preferably, a first inlet pipe is connected to the surface of the filter tank near the bottom, a drain port is connected to the bottom of the filter tank, and a discharge pipe is connected to the top of the tubular filter element.

[0010] Preferably, a discharge valve is installed on the surface of the discharge pipe, and the discharge valve is used to control the outflow of liquid inside the discharge pipe.

[0011] Preferably, a nitrogen valve is installed on the surface of the other end of the discharge pipe, the nitrogen valve is used to control the flow of nitrogen into the discharge pipe, a water supply pipe is connected to the top of the filter tank, and the water spray component is installed on the surface of the water supply pipe.

[0012] Preferably, a rotating sleeve is connected to both the upper and lower ends of the scraping component, the rotating sleeve is movably connected to the outer surface of the tubular filter element, and a fan blade is connected to the surface of the rotating sleeve.

[0013] Preferably, a preheating mechanism is provided at one end of the filter tank. The preheating mechanism includes a preheating box, which is connected to one end of the first liquid inlet pipe, and a second liquid inlet pipe is connected to the top of the preheating box.

[0014] Preferably, the surface of the preheating box is connected to a connecting pipe, one end of which is connected to a preheating pipe, and the other end of which is connected to the surface of the discharge valve.

[0015] Compared with related technologies, the composite filtration device for alloy powder preparation provided by this utility model has the following beneficial effects:

[0016] This utility model provides a composite filtration device for alloy powder preparation. The filtration mechanism can separate metal powder and liquid, while the flushing mechanism can perform gas backflushing and liquid rinsing on the tubular filter element. The scraping mechanism can drive the scraping part to rotate through the liquid pressure, scraping off the oxides on the surface of the tubular filter element, thus achieving thorough removal of impurities. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of a composite filtration device for alloy powder preparation provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the internal structure of the main mechanism.

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0020] Figure 4 This is a schematic diagram of the second embodiment of a composite filtration device for alloy powder preparation provided by this utility model.

[0021] The diagram is labeled as follows: 1. Main structure; 11. Filter tank; 12. First inlet pipe; 13. Drain port.

[0022] 2. Filtration mechanism; 21. Tubular filter element; 22. Discharge pipe; 23. Discharge valve.

[0023] 3. Flushing mechanism; 31. Nitrogen valve; 32. Water supply pipe; 33. Water spray components.

[0024] 4. Scraping mechanism; 41. Rotating sleeve; 42. Fan blade; 43. Scraping parts.

[0025] 5. Preheating mechanism; 51. Preheating box; 52. Second liquid inlet pipe; 53. Connecting pipe; 54. Preheating pipe. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] First Embodiment

[0028] Please refer to the following: Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a composite filtration device for alloy powder preparation provided by this utility model; Figure 2 for Figure 1 The diagram shows the internal structure of the main mechanism. Figure 3 for Figure 2 The enlarged schematic diagram of part A is shown. A composite filtration device for alloy powder preparation includes: a main body 1, the main body 1 including a filter tank 11, a filter mechanism 2 disposed on the surface of the filter tank 11, the filter mechanism 2 including a tubular filter element 21, the tubular filter element 21 being used for filtering molten metal;

[0029] The rinsing mechanism 3 includes a water spray element 33, which is used to rinse the surface of the tubular filter element 21.

[0030] The scraping mechanism 4 includes a scraping component 43, which is used to scrape the oxide on the surface of the tubular filter element 21.

[0031] The main body 1 provides a site for filtering molten metal. The filter tank 11 is cylindrical with a conical bottom to facilitate the discharge of metal powder. The filter mechanism 2 is used for solid-liquid separation of the molten metal. Multiple tubular filter elements 21 are used, including cloth-type tubular filter elements, metal slit-type tubular filter elements, and sintered metal mesh type tubular filter elements, preferably metal slit-type tubular filter elements. These are made of metal material and have uniform slits on their surface, which serve as filtration channels to intercept solid particles. The rinsing mechanism 3 is used to rinse the surface of the tubular filter elements 21. Multiple water spray elements 33 are installed on the tubular filter elements. The top of 21 can be a fan-shaped nozzle, a cone-shaped nozzle, or a columnar nozzle, preferably a columnar nozzle, which has a very strong impact force and can remove hard and firmly adhered dirt from the surface of the tubular filter element 21. The function of the scraping mechanism 4 is to scrape off the oxides on the surface of the tubular filter element 21. Two scraping parts 43 are rotatably connected to the outer surface of each tubular filter element 21. The scraping parts 43 can be scrapers or scrapers, preferably scrapers. By rotating the scraping parts 43 on the surface of the tubular filter element 21, friction is generated with the surface of the tubular filter element 21. The friction pushes the oxides on the surface of the tubular filter element 21 off the surface of the tubular filter element 21.

[0032] The filter tank 11 is connected to a first inlet pipe 12 near the bottom surface, the bottom of the filter tank 11 is connected to a drain port 13, and the top of the tubular filter element 21 is connected to a discharge pipe 22.

[0033] The first inlet pipe 12 can be connected to an external device. The molten metal in the external device is injected into the filter tank 11 through a high-pressure pump. The drain port 13 is connected to the bottom of the filter tank 11, and the filtered metal powder can be discharged through the drain port 13.

[0034] A discharge valve 23 is installed on the surface of the discharge pipe 22, and the discharge valve 23 is used to control the outflow of liquid inside the discharge pipe 22.

[0035] The discharge pipe 22 is composed of multiple pipes connected together. Multiple tubular filter elements 21 are arrayed on the surface of the pipes embedded inside the filter tank 11, and the two ends of the arrayed pipes are connected by two pipes. The discharge valve 23 is fixedly installed on the surface of one of the pipes. When the molten metal is injected into the filter tank 11, the liquid permeates into the tubular filter element 21 and flows into the discharge pipe 22 through the central pipe, and is discharged by opening the discharge valve 23.

[0036] A nitrogen valve 31 is installed on the surface of the other end of the discharge pipe 22. The nitrogen valve 31 is used to control the flow of nitrogen into the discharge pipe 22. A water supply pipe 32 is connected to the top of the filter tank 11. The water spray component 33 is installed on the surface of the water supply pipe 32.

[0037] The water supply pipe 32 consists of multiple pipe arrays connected to the inside of the top of the filter tank 11. The water spray element 33 is arrayed and installed on the surface of multiple pipes. The nitrogen valve 31 is fixedly installed on the surface of the other end of the discharge pipe 22. During filtration, it is closed. During cleaning, the discharge valve 23 can be closed and the nitrogen valve 31 can be opened. By connecting to the nitrogen tank, nitrogen enters the discharge pipe 22 through the nitrogen valve 31 to backwash the surface of the tubular filter element 21. Clean water is sprayed from the water spray element 33 through the water supply pipe 32 onto the surface of the tubular filter element 21. The combination of air flushing and liquid flushing achieves the removal of impurities from the surface of the tubular filter element 21.

[0038] Both ends of the scraper 43 are connected to a rotating sleeve 41, which is movably connected to the outer surface of the tubular filter element 21. A fan blade 42 is connected to the surface of the rotating sleeve 41.

[0039] Each set of scraping parts 43 has a rotating sleeve 41 fixedly connected to both the upper and lower ends, and the two rotating sleeves 41 are respectively rotated and sleeved on the surfaces of the upper and lower ends of the tubular filter element 21. The fan blades 42 are arrayed and connected to the surface of the rotating sleeves 41, and can be spiral or plate-shaped, preferably spiral. When high-pressure water flows through the fan blades 42, the fan blades 42 can make the rotating sleeves 41 rotate efficiently, thereby driving the scraping parts 43 to achieve the peeling of oxides on the surface of the tubular filter element 21.

[0040] The working principle of the composite filtration device for alloy powder preparation provided by this utility model is as follows:

[0041] First, molten metal is injected into the filter tank 11 through the first inlet pipe 12 via a feed pump. Under the pressure of the pump, the slurry flows evenly over the surface of each tubular filter element 21. The liquid passes through the filter cloth on the surface of the tubular filter element 21, flows from the porous tube to the central tube, then to the discharge pipe 22, and finally is discharged through the discharge valve 23. When it is necessary to clean the surface of the tubular filter element 21, the discharge valve 23 is closed and the nitrogen valve 31 and the water supply pipe 32 are opened. Nitrogen gas is backflushed into the tubular filter element 21 through the discharge pipe 22, blowing away impurities on the surface of the tubular filter element 21. Clean water is delivered through the water supply pipe 32 and sprayed out from the spray nozzle 33, impacting the surface of the fan blade 42 and driving the fan blade 42 to rotate. This causes the rotating sleeve 41 to drive the scraper 43 to rotate, scraping off the oxide layer on the outer surface of the tubular filter element 21. Combined with the rinsing of water, the surface of the tubular filter element 21 is thoroughly cleaned.

[0042] Compared with related technologies, the composite filtration device for alloy powder preparation provided by this utility model has the following beneficial effects:

[0043] This utility model provides a composite filtration device for alloy powder preparation. The filtration mechanism 2 can separate metal powder and liquid, while the flushing mechanism 3 can perform gas backflushing and liquid rinsing on the tubular filter element 21. The scraping mechanism 4 can drive the scraping part 43 to rotate through the pressure of the liquid, scraping off the oxides on the surface of the tubular filter element 21, thus achieving thorough removal of impurities.

[0044] Second Embodiment

[0045] Please refer to the following: Figure 4 Based on the composite filtration device for alloy powder preparation provided in the first embodiment of this application, the second embodiment of this application proposes another composite filtration device for alloy powder preparation. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0046] Specifically, the second embodiment of this application provides a composite filtration device for alloy powder preparation, which differs in that a preheating mechanism 5 is provided at one end of the filter tank 11, the preheating mechanism 5 includes a preheating box 51, the preheating box 51 is connected to one end of the first liquid inlet pipe 12, and the top of the preheating box 51 is connected to a second liquid inlet pipe 52.

[0047] The preheating box 51 is a square body made of heat-resistant alloy steel. The preheating tubes 54 are arrayed and wound around the inner wall of the preheating box 51, with one end connected to the connecting pipe 53. The top of the connecting pipe 53 is connected to the discharge valve 23, and the other end is installed on the outer surface of the preheating box 51.

[0048] The surface of the preheating box 51 is connected to a connecting pipe 53, one end of which is connected to a preheating pipe 54, and the other end of which is connected to the surface of the discharge valve 23.

[0049] The separated liquid can flow into the preheating tube 54 through the connecting pipe 53. The residual heat of the liquid is transferred to the inner surface of the preheating box 51 through the surface of the preheating tube 54. Thus, the molten metal inside the preheating box 51 can absorb the heat from the inner surface of the preheating box 51, thereby achieving the efficiency of preheating the molten metal.

[0050] The working principle of the composite filtration device for alloy powder preparation provided by this utility model is as follows:

[0051] The separated liquid flows into the preheating tube 54 through the connecting pipe 53. The preheating tube 54 absorbs the residual heat of the liquid and transfers it to the surface of the preheating box 51. The molten metal added into the preheating box 51 through the second liquid inlet pipe 52 absorbs the heat on the surface of the preheating box 51, thus achieving preheating.

[0052] Compared with related technologies, the composite filtration device for alloy powder preparation provided by this utility model has the following beneficial effects:

[0053] This utility model provides a composite filtration device for alloy powder preparation. By installing a preheating pipe 54 inside the preheating box 51 and connecting it to the discharge valve 23 through a connecting pipe 53, the filtered liquid can be transported to the preheating pipe 54. The residual heat of the liquid is used to preheat the molten metal inside the preheating box 51, thereby improving energy efficiency.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A composite filtration device for alloy powder preparation, characterized in that, include: The main body includes a filter tank, the surface of which is provided with a filter mechanism, the filter mechanism including a tubular filter element, the tubular filter element being used for filtering molten metal; A rinsing mechanism, comprising a water spray component for rinsing the surface of a tubular filter element; A scraping mechanism, comprising a scraping component for scraping oxides off the surface of a tubular filter element.

2. The composite filtration device for alloy powder preparation according to claim 1, characterized in that, The filter tank is connected to a first inlet pipe near the bottom surface, the bottom of the filter tank is connected to a drain port, and the top of the tubular filter element is connected to a discharge pipe.

3. A composite filtration device for alloy powder preparation according to claim 2, characterized in that, A discharge valve is installed on the surface of the discharge pipe, which is used to control the outflow of liquid inside the discharge pipe.

4. A composite filtration device for alloy powder preparation according to claim 3, characterized in that, A nitrogen valve is installed on the surface of the other end of the discharge pipe. The nitrogen valve is used to control the flow of nitrogen into the discharge pipe. A water supply pipe is connected to the top of the filter tank. The water spray component is installed on the surface of the water supply pipe.

5. A composite filtration device for alloy powder preparation according to claim 1, characterized in that, Both ends of the scraper are connected to a rotating sleeve, which is movably connected to the outer surface of the tubular filter element. The surface of the rotating sleeve is connected to a fan blade.

6. A composite filtration device for alloy powder preparation according to claim 3, characterized in that, A preheating mechanism is provided at one end of the filter tank. The preheating mechanism includes a preheating box, which is connected to one end of the first liquid inlet pipe. A second liquid inlet pipe is connected to the top of the preheating box.

7. A composite filtration device for alloy powder preparation according to claim 6, characterized in that, The surface of the preheating box is connected to a connecting pipe, one end of which is connected to a preheating pipe, and the other end of which is connected to the surface of the discharge valve.

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