Casting molten metal filtering and purifying device

Abstract

The utility model relates to the technical field of molten metal filtration and purification, and discloses a casting molten metal filtration and purification device which comprises a liquid storage tank, a conveying pipe is fixedly communicated with the bottom surface of the liquid storage tank, a cleaning structure is arranged in the liquid storage tank, and a filtering structure is arranged at the bottom end of the conveying pipe. Through the arrangement of the cleaning structure and the filtering structure, the input pipe inputs molten metal impurity cleaning treatment liquid into the annular pipe, the motor drives the scraping strip and the stirring rod to rotate, the scraping strip scrapes the inner wall of the liquid storage tank, molten metal is prevented from adhering to the inner wall of the liquid storage tank after being discharged, and the stirring rod stirs and mixes the molten metal and the treatment liquid, so that the molten metal impurity cleaning effect is improved. According to the mode that the molten metal enters the filtering tank through the conveying pipe to complete purification of the molten metal, the purified molten metal enters the filtering tank through the conveying pipe, the molten metal is filtered through the ceramic mesh in the filtering tank, suspended impurities in the molten metal are filtered out, and the molten metal is firstly purified through the treating fluid and then filtered, so that the quality of the filtered and purified molten metal is improved; the metal liquid filtering and purifying effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of molten metal filtration and purification technology, and in particular to a molten metal filtration and purification device for castings. Background Technology

[0002] In the casting process, the casting mold adopts a two-part mold assembly, with each half mold having a cavity corresponding to half of the part. The two half molds are assembled to form a complete mold cavity with only one open end. During casting, the mold cavity opening faces upward, and the molten metal is poured into the mold cavity from the mold cavity opening. If the molten metal contains impurities during the pouring process, it will affect the quality of the product. The finished product is prone to defects such as porosity, shrinkage porosity, and shrinkage cavities, which affect the casting quality. The main impurities in the molten metal are refractory materials that cannot be melted and impurities adhering to the inner wall of the molten metal stirring container. Therefore, a molten metal filtration and purification device is required during the casting process.

[0003] An existing molten metal filtration and treatment device for metal casting production (publication number: CN215237809U) has at least the following drawbacks: Although the device first filters the molten metal through an impurity filter and then purifies the inner wall of the mounting frame and the molten metal through a molten metal impurity cleaning solution, the molten metal impurity cleaning solution reacts with the non-metallic impurities in the molten metal, encapsulating and precipitating them, thus separating the impurities from the molten metal. The method of filtering first and then adding the molten metal impurity cleaning solution makes it difficult to effectively filter and purify the molten metal, resulting in poor purification effect. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a filtration and purification device for molten metal in castings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A metal filtration and purification device for castings includes a storage tank, a conveying pipe fixedly connected to the bottom surface of the storage tank, a cleaning structure inside the storage tank, and a filtering structure at the bottom end of the conveying pipe. The cleaning structure includes a scraper rotatably disposed inside the storage tank, the outer side of the scraper being in contact with the inner circular wall of the storage tank. A ring pipe is fixedly fixed to the top surface inside the storage tank, and a plurality of spray holes are opened on the outer circular wall of the ring pipe. An input pipe is fixedly connected to the top surface of the storage tank, and the bottom end of the input pipe is fixedly connected to the ring pipe.

[0007] As a further embodiment of this utility model, a motor is fixed to the top surface of the liquid storage tank, the output end of the motor passes through the top surface of the liquid storage tank and is fixed to the top surface of the scraper, and two stirring rods are fixed to the bottom surface of the scraper.

[0008] As a further embodiment of this utility model, the filtration structure includes a filter tank disposed at the bottom end of the conveying pipe, a ceramic mesh fixed inside the filter tank (the ceramic mesh is existing technology), and a discharge pipe fixedly connected to the bottom surface of the filter tank.

[0009] As a further embodiment of this utility model, a number of snap-fit ​​blocks are fixed on the outer circular wall of the conveying pipe, and a number of snap-fit ​​grooves are opened on the inner wall of the filter tank, with the snap-fit ​​blocks and snap-fit ​​grooves slidingly arranged inside each other.

[0010] As a further embodiment of this utility model, the conveying pipe is connected to and fixed with a valve, and the top surface of the liquid storage tank is provided with a liquid inlet.

[0011] As a further embodiment of this utility model, a support ring is fixed to the outer circular wall of the liquid storage tank, and several support rods are fixed to the bottom surface of the support ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This molten metal filtration and purification device, through the design of cleaning and filtration structures, introduces a molten metal impurity cleaning solution into the ring pipe via an inlet pipe. A motor drives a scraper and a stirring rod to rotate. The scraper scrapes the inner wall of the storage tank to prevent the molten metal from adhering to the inner wall after discharge. The stirring rod mixes the molten metal and the cleaning solution, completing the purification of the molten metal. The purified molten metal then enters the filter tank through a delivery pipe. The ceramic mesh inside the filter tank filters the molten metal, removing suspended impurities. This method of purifying the molten metal with the cleaning solution before filtration improves the quality of the purified molten metal and ensures the effectiveness of the filtration and purification process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a casting molten metal filtration and purification device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of a casting molten metal filtration and purification device proposed in this utility model;

[0016] Figure 3 This is a schematic diagram showing the disassembled structure of the diesel fuel tank in a casting molten metal filtration and purification device proposed in this utility model.

[0017] Figure 4 This is a schematic diagram showing the disassembled structure of the filter tank in a casting molten metal filtration and purification device proposed in this utility model.

[0018] Figure 5 This utility model proposes a filtration and purification device for molten metal in castings. Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Storage tank; 2. Delivery pipe; 201. Scraper; 202. Ring pipe; 203. Spray hole; 204. Input pipe; 205. Stirring rod; 3. Filter tank; 301. Ceramic mesh; 302. Discharge pipe; 4. Snap-fit ​​block; 401. Snap-fit ​​groove; 5. Valve; 501. Liquid inlet; 6. Support ring. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Reference Figures 1-5 A metal filtration and purification device for castings includes a storage tank 1, a conveying pipe 2 fixedly connected to the bottom surface of the storage tank 1, a cleaning structure inside the storage tank 1, and a filtering structure at the bottom end of the conveying pipe 2. The cleaning structure includes a scraper 201 rotatably disposed inside the storage tank 1, the outer side of the scraper 201 being in contact with the inner circular wall of the storage tank 1, a ring pipe 202 fixedly fixed to the top surface inside the storage tank 1, a plurality of spray holes 203 being opened on the outer circular wall of the ring pipe 202, and an input pipe 204 fixedly connected to the top surface of the storage tank 1, the bottom end of the input pipe 204 being fixedly connected to the ring pipe 202.

[0024] In this embodiment, a motor is fixed on the top surface of the liquid storage tank 1. The output end of the motor passes through the top surface of the liquid storage tank 1 and is fixed to the top surface of the scraper 201. Two stirring rods 205 are fixed on the bottom surface of the scraper 201. Both the scraper 201 and the stirring rods 205 are made of ceramic material, which has properties such as high temperature resistance and corrosion resistance.

[0025] In this embodiment, the filtration structure includes a filter tank 3 located at the bottom of the conveying pipe 2. A ceramic mesh 301 is fixed inside the filter tank 3. The ceramic mesh 301 is existing technology. A discharge pipe 302 is fixedly connected to the bottom surface of the filter tank 3. Through the setup of the cleaning and filtration structures, the operator pours molten metal into the storage tank 1 and inputs a molten metal impurity cleaning solution into the ring pipe 202 through the input pipe 204. The cleaning solution is sprayed through the spray hole 203 onto the inner wall of the storage tank 1. The motor drives the scraper 201 and the stirring rod 205 to rotate. The scraper 201 scrapes the inner wall of the storage tank 1, causing the cleaning solution to circulate within the storage tank 1. The wall is evenly coated to prevent the molten metal from adhering to the inner wall of the storage tank 1 after discharge. At the same time, the stirring rod 205 stirs and mixes the molten metal and the treatment liquid, so that the molten metal and the treatment liquid are fully mixed and reacted to complete the purification of the molten metal and improve the purity of the molten metal. The purified molten metal enters the filter tank 3 through the conveying pipe 2. The ceramic mesh 301 in the filter tank 3 filters the molten metal and removes suspended impurities in the molten metal. The filtered molten metal is discharged through the discharge pipe 302. The method of purifying the molten metal with the treatment liquid first and then filtering it improves the quality of the molten metal after filtration and purification and ensures the filtration and purification effect of the molten metal.

[0026] In this embodiment, a number of snap-fit ​​blocks 4 are fixed on the outer circular wall of the conveying pipe 2, and a number of snap-fit ​​grooves 401 are opened on the inner wall of the filter tank 3. The snap-fit ​​blocks 4 and the snap-fit ​​grooves 401 are slidably arranged inside. When the ceramic mesh 301 in the filter tank 3 needs to be disassembled and repaired after multiple filtrations, the staff can rotate the filter tank 3 to make the snap-fit ​​blocks 4 slide out of the snap-fit ​​grooves 401, thereby realizing the quick disassembly and assembly of the conveying pipe 2 and the filter tank 3, which is convenient for the staff to repair.

[0027] In this embodiment, the delivery pipe 2 is connected to and fixed with a valve 5, and the top surface of the storage tank 1 is provided with a liquid inlet 501. The valve 5 is a ceramic valve. Through the liquid inlet 501, it is convenient for the staff to inject molten metal into the storage tank 1. At the same time, the valve 5 allows the molten metal to flow into the filter tank 3 when it is stirred.

[0028] In this embodiment, a support ring 6 is fixed to the outer circular wall of the liquid storage tank 1, and several support rods are fixed to the bottom surface of the support ring 6. The device can be stably supported by the support ring 6 and the support rods.

[0029] Working Principle: In operation, the operator pours molten metal into storage tank 1 and introduces a molten metal impurity cleaning solution into ring pipe 202 through input pipe 204. The solution is sprayed onto the inner wall of storage tank 1 through nozzle 203. A motor drives scraper 201 and stirring rod 205 to rotate. Scraper 201 scrapes the inner wall of storage tank 1, ensuring the solution is evenly applied and preventing the molten metal from adhering to the inner wall after discharge. Simultaneously, stirring rod 205 mixes the molten metal and the solution, ensuring thorough mixing and reaction to purify the molten metal and improve its purity. The purified molten metal is then conveyed through delivery pipe 2... The molten metal enters the filter tank 3, where the ceramic mesh 301 filters the molten metal, removing suspended impurities. The filtered molten metal is then discharged through the discharge pipe 302. When the ceramic mesh 301 in the filter tank 3 needs to be disassembled and repaired after multiple filtrations, the operator can rotate the filter tank 3 to allow the locking block 4 to slide out of the locking groove 401, thus enabling quick disassembly and assembly of the conveying pipe 2 and the filter tank 3 for easy maintenance. The inlet hole 501 allows the operator to easily inject molten metal into the storage tank 1. At the same time, the valve 5 allows the molten metal to flow into the filter tank 3 when it is stirred. The support ring 6 and the support rod provide stable support for the device.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A metal filtration and purification device for castings, comprising a storage tank (1), characterized in that: The bottom surface of the storage tank (1) is connected to and fixed with a delivery pipe (2). The storage tank (1) is equipped with a cleaning structure. The bottom end of the delivery pipe (2) is equipped with a filter structure. The cleaning structure includes a scraper (201) that is rotatably installed inside the storage tank (1). The outer side of the scraper (201) is in contact with the inner circular wall of the storage tank (1). The top surface of the storage tank (1) is fixed with a ring pipe (202). The outer circular wall of the ring pipe (202) is provided with several spray holes (203). The top surface of the storage tank (1) is connected to and fixed with an input pipe (204). The bottom end of the input pipe (204) is connected to and fixed with the ring pipe (202).

2. The casting molten metal filtration and purification device according to claim 1, characterized in that, A motor is fixed to the top surface of the storage tank (1). The output end of the motor passes through the top surface of the storage tank (1) and is fixed to the top surface of the scraper (201). Two stirring rods (205) are fixed to the bottom surface of the scraper (201).

3. The casting molten metal filtration and purification device according to claim 2, characterized in that, The filtration structure includes a filter tank (3) located at the bottom of the conveying pipe (2). A ceramic mesh (301) is fixed inside the filter tank (3). The ceramic mesh (301) is existing technology. A discharge pipe (302) is fixedly connected to the bottom surface of the filter tank (3).

4. The casting molten metal filtration and purification device according to claim 3, characterized in that, The outer circular wall of the conveying pipe (2) is fixed with several snap-fit ​​blocks (4), and the inner wall of the filter tank (3) is provided with several snap-fit ​​grooves (401). The snap-fit ​​blocks (4) and the snap-fit ​​grooves (401) are slidably arranged inside each other.

5. The casting molten metal filtration and purification device according to claim 4, characterized in that, The delivery pipe (2) is connected to a valve (5) and the top surface of the storage tank (1) is provided with an inlet hole (501).

6. The casting molten metal filtration and purification device according to claim 5, characterized in that, The outer circular wall of the liquid storage tank (1) is fixed with a support ring (6), and the bottom surface of the support ring (6) is fixed with several support rods.

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