Metal melt filter

Abstract

The utility model relates to a metal melt filter. The metal melt filter comprises a filter main body, a filter liner, a filter liquid collecting launder, a heat preservation cover and a filter sheet which are mutually independent and can be assembled and disassembled, the filter main body comprises a shell, a top cover, an insulating seat and a heating plate; the top of the shell is connected with the top cover, the filter inner container is installed in the shell through a first through hole of the top cover, and the filter piece is arranged at the bottom of the filter inner container. The insulating seat is arranged at the bottom in the shell, the plurality of heating plates are arranged on the insulating seat and surround the periphery of the filter liner, and the filter liquid collecting launder is arranged at the bottom of the shell; and the heat preservation cover covers the top cover. All parts of the metal melt filter are light in weight and convenient to disassemble and assemble, the filter sheets are simple and rapid to replace, and the operation intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, and particularly relates to a metal melt filter. Background Art

[0002] When metal is smelted and cast into ingots, it is often necessary to filter and purify the metal melt to remove melt impurities and improve the purity of the melt. The inner liner of a traditional metal melt filter box is generally made of refractory material and coated with a release agent to prevent the metal melt from sticking to the inner liner of the filter box, which is difficult to clean. When the filter box is in use, it is generally required that the temperatures of the inner liner of the filter box and the filter sheet are close to the temperature of the metal melt to avoid the metal melt cooling too quickly, blocking the filter sheet, and affecting the filtering effect.

[0003] The existing operation method for raising the temperature of the metal melt filter box is as follows: Use gas to bake and heat the surface of the inner liner of the filter box and the filter sheet for a long time to raise the temperature to the desired temperature, and then cover it with a heat preservation cover for heat preservation. As Figure 1 shown is the baking state of the inner liner of the existing metal melt filter, Figure 2 shown is the heat preservation state of the inner liner of the existing metal melt filter after baking and covering with a heat preservation cover.

[0004] The above existing metal melt filter box and heating operation method mainly have the following deficiencies:

[0005] First, to avoid the rapid cooling of the inner liner of the filter, it is necessary to raise the overall temperature of the inner liner of the filter to the specified temperature. However, the refractory material used for the inner liner of the filter has a low thermal conductivity, and only baking the surface with gas has low efficiency. As the size of the inner liner increases, the baking time is significantly extended;

[0006] Second, an electric heating system can be added to the heat preservation cover of the filter to heat and insulate the filter, but this heat only exists on the surface of the metal melt and is difficult to conduct to the filter sheet under the melt. As the through holes of the filter sheet are gradually blocked by impurities, the temperature of the bottom melt gradually decreases, and the viscosity increases, which will further block the filter sheet;

[0007] Third, after filtration, some metal melt will remain and accumulate in the inner liner of the filter. The temperature of the inner liner of the filter is high and the cooling rate is slow, which is not conducive to quickly cleaning the filter and replacing the filter sheet, and this will delay the filtering and casting operation of the metal melt in the subsequent furnace;

[0008] Fourth, the wall thickness of the refractory material inner liner of the filter is large, resulting in a relatively heavy overall weight of the filter, increasing the labor intensity of the operation. Summary of the Invention

[0009] The technical problem to be solved by the utility model is to provide a quickly disassembled and assembled metal melt filter in view of the above deficiencies.

[0010] The present utility model is achieved through the following technical solutions:

[0011] A metal melt filter, which includes a filter main body, a filter inner container, a filter liquid collection flow groove, a heat preservation cover and filter sheets;

[0012] The filter main body includes a housing, a top cover, an insulating seat and a heating plate;

[0013] The top of the housing is connected to the top cover. The center of the top cover has a first through hole communicating the inside and outside of the housing. The filter inner container is installed inside the housing through the first through hole. The filter sheets are arranged at the bottom of the filter inner container. The insulating seat is arranged at the bottom inside the housing. The center of the insulating seat has a second through hole communicating the inside and outside of the housing. A plurality of the heating plates are arranged on the insulating seat around the filter inner container. The filter liquid collection flow groove is arranged at the bottom of the housing. The heat preservation cover covers the top of the housing.

[0014] Further, for the metal melt filter, the housing includes a peripheral wall, a supporting part extending inward along the bottom of the peripheral wall and perpendicular to the peripheral wall direction, and a supporting part extending upward along the supporting part and perpendicular to the supporting part; the supporting part is used for arranging the insulating seat and the heating plate, and the supporting part is used for arranging the filter liquid collection flow groove.

[0015] Further, for the metal melt filter, the liquid collection flow groove body of the filter liquid collection flow groove has an upper-wide and lower-narrow structure; a first flange outer edge extends outward at the upper end of the liquid collection flow groove body, and the first flange outer edge overlaps on the supporting part.

[0016] Further, for the metal melt filter, the inner container body of the filter inner container has an upper-wide and lower-narrow structure; a second flange outer edge extends outward at the upper end of the inner container body for overlapping on the first through hole of the top cover, so that the filter inner container is installed inside the filter main body; a receiving port extends inward at the lower end of the inner container body for overlapping the filter sheets.

[0017] Further, for the metal melt filter, a plurality of hanging rings are arranged under the flange outer edge.

[0018] Further, for the metal melt filter, the filter main body further includes a heating plate quick socket, and the heating plate is connected to the heating plate quick socket through a wire.

[0019] Further, for the metal melt filter, the filter main body further includes a thermocouple quick socket, and the thermocouple of the heating plate is connected to the thermocouple quick socket through a wire.

[0020] Furthermore, for the metal melt filter, the housing is a square shell structure, with reinforcing blocks provided at the four inner corners thereof, and threaded holes are provided at the tops of the reinforcing blocks; the top cover is a square socket structure, and countersunk bolt holes are provided at the top thereof for mating with the threaded holes to connect it to the housing.

[0021] Furthermore, for the metal melt filter, the insulating seat is a square plate structure, with cut corners at the four corners thereof for mating with the reinforcing blocks, and wiring grooves are provided around its perimeter.

[0022] Furthermore, for the metal melt filter, the heating plate is a square plate structure, and connection posts are provided at its lower end for insertion into the wiring grooves.

[0023] The advantages and effects of the present utility model are as follows:

[0024] 1. The metal melt filter provided by the present utility model includes a filter main body, a filter inner tank, a filter liquid collection trough, a heat preservation cover, and filter sheets that are mutually independent and can be installed and disassembled. Each part is light in weight, convenient for disassembly and assembly, and the filter sheets can be replaced simply and quickly, reducing the operation intensity.

[0025] 2. The filter main body of the metal melt filter provided by the present utility model includes a heating plate that surrounds the filter inner tank, improving the heating efficiency of the metal melt filter, shortening the heating-up time, improving the production efficiency, and reducing the energy consumption. And heat can be continuously supplemented around during the filtering process to prevent the bottom of the metal melt from cooling too quickly. After the filtering operation, the inner tank of the metal melt filter cools quickly, facilitating the quick replacement of the filter sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Showing a schematic diagram of the baking state of the inner tank of the existing metal melt filter;

[0027] Figure 2 Showing a schematic diagram of the heat preservation state of the existing metal melt filter inner tank with a heat preservation cover after baking;

[0028] Figure 3 Showing a schematic diagram of the structure of the metal melt filter provided by the present utility model;

[0029] Figure 4 Showing a cross-sectional view of the metal melt filter provided by the present utility model;

[0030] Figure 5 Showing a schematic diagram of the structure of the filter main body of the metal melt filter provided by the present utility model;

[0031] Figure 6 Showing a cross-sectional view of the filter main body of the metal melt filter provided by the present utility model;

[0032] Figure 7 Schematic structural diagram of the outer shell of the filter body of the metal melt filter provided by the present utility model;

[0033] Figure 8 Cross-sectional view of the outer shell of the filter body of the metal melt filter provided by the present utility model;

[0034] Figure 9 Schematic structural diagram of the top cover of the filter body of the metal melt filter provided by the present utility model;

[0035] Figure 10 Cross-sectional view of the top cover of the filter body of the metal melt filter provided by the present utility model;

[0036] Figure 11 Schematic structural diagram of the insulating seat of the filter body of the metal melt filter provided by the present utility model;

[0037] Figure 12 Schematic structural diagram of the heating plate of the filter body of the metal melt filter provided by the present utility model;

[0038] Figure 13 Assembly schematic diagram of the insulating seat and the heating plate of the metal melt filter provided by the present utility model;

[0039] Figure 14 Schematic structural diagram of the filter inner tank of the metal melt filter provided by the present utility model;

[0040] Figure 15 Cross-sectional view of the filter inner tank of the metal melt filter provided by the present utility model;

[0041] Figure 16 Schematic structural diagram of the filter liquid collection flow groove of the metal melt filter provided by the present utility model.

[0042] Explanation of reference numerals: 1 - filter body, 11 - outer shell, 111 - reinforcing block, 112 - protective baffle, 113 - wiring port, 114 - chamfer, 115 - peripheral wall, 116 - supporting part, 117 - supporting portion, 12 - top cover, 121 - first through hole, 13 - heating plate quick socket, 14 - thermocouple quick socket, 15 - insulating seat, 151 - wiring groove, 152 - second through hole, 153 - cut-off corner, 16 - heating plate, 161 - wiring post, 2 - filter inner tank, 21 - first flange outer edge, 22 - lifting ring, 23 - inner tank main body, 24 - receiving port, 3 - filter liquid collection flow groove, 31 - second flange outer edge, 32 - liquid collection flow groove main body, 33 - pipe, 4 - heat preservation cover, 41 - heat preservation cover lifting ring, 5 - filter element. Detailed implementation manners

[0043] For the purpose of making the objectives, technical solutions and advantages of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings:

[0044] In the description of the present utility model, it should be understood that unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the protection scope of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] As Figure 3 、 4 shown, the metal melt filter provided by the present utility model includes a filter main body 1 that can be installed and disassembled, a filter inner liner 2, a filter liquid collection flow groove 3, a heat preservation cover 4, and a filter element 5. The filter inner liner 2 is installed inside the filter main body 1, the filter element 5 is installed at the bottom of the filter inner liner 2, the filter liquid collection flow groove 3 is installed at the bottom of the filter main body 1, and the heat preservation cover 4 covers the filter main body 1.

[0046] As Figure 5 、 6As shown, the filter body 1 includes a housing 11, a top cover 12, an insulating seat 15, and a heating plate 16. The housing 11 is transparent from top to bottom. Its top is connected to the top cover 12. The center of the top cover 12 has a first through hole 121 that communicates the inside and outside of the housing 11. The filter inner tank 2 is installed inside the housing 11 through the first through hole 121. A filter sheet 5 is provided at the bottom of the filter inner tank 2. An insulating seat 15 is provided at the bottom inside the housing 11. The center of the insulating seat 15 has a second through hole 152 that communicates the inside and outside of the housing 11. A plurality of heating plates 16 are provided on the insulating seat 15 around the filter inner tank 2. A filter liquid collection chute 3 is provided at the bottom of the housing 11. A heat preservation cover 4 covers the top cover 12. The internal gap of the filter body 1 is filled with heat preservation material to play a role in heat preservation and heat insulation.

[0047] As Figure 7 , 8 shown, the housing 11 includes a peripheral wall 115, a supporting portion 116 that extends inward along the bottom of the peripheral wall 115 and is perpendicular to the peripheral wall 115, and a supporting portion 117 that extends upward along the supporting portion 116 and is perpendicular to the supporting portion 116. The supporting portion 116 is used to set the insulating seat 15 and the heating plate 16, and the supporting portion 117 is used to set the filter liquid collection chute 3. As Figure 16 shown, the liquid collection chute body 32 of the filter liquid collection chute 3 is a tapered structure with a wider top and a narrower bottom. The upper end of the liquid collection chute body 32 extends outward to form a second flange outer edge 31. The second flange outer edge 31 is lapped on the supporting portion 117 to prevent the filter liquid collection chute 3 from falling. A chamfer 114 is provided at the upper end of the supporting portion 117. The chamfer 114 inclines inward from approximately the center position of the upper end of the supporting portion 117. The inclination angle matches the angle formed between the second flange outer edge 31 and the liquid collection chute body 32, facilitating the smooth lap of the filter liquid collection chute 3 on the supporting portion 117. A pipe 33 is provided at the lower end of the liquid collection chute body 32. The pipe 33 can be a square pipe, a round pipe, etc. The cross-sectional area of the inner opening of the pipe 33 should be slightly larger than the passing area of the filter sheet 5 to prevent the metal melt from overflowing. The filter liquid collection chute 3 is made of metal. Different metal materials can be used for different metal melts. For example, for an aluminum alloy melt, a filter liquid collection chute made of stainless steel can be used. The inside of the filter liquid collection chute 3 is coated with a release coating to prevent the metal melt from sticking and being unable to be cleaned.

[0048] The filter body 1 further includes a heating plate quick socket 13 and a thermocouple quick socket 14. The heating plate quick socket 13 is a flange-type high-temperature-resistant quick-connect socket, which can be used in conjunction with a temperature controller with a high-temperature-resistant quick-connect plug. The heating plate 16 is connected to the heating plate quick socket 13 through a high-temperature-resistant wire. The thermocouple quick socket 14 is a flange-type high-temperature-resistant quick-connect socket, which can be used in conjunction with a temperature controller with a high-temperature-resistant quick-connect plug. The thermocouple of the heating plate 16 is connected to the thermocouple quick socket 14 through a high-temperature-resistant wire. The heating plate quick socket 13 and the thermocouple quick socket 14 are high-temperature-resistant quick-connect sockets, which can achieve quick connection and disconnection with the temperature controller. When a metal melt filter has problems, a spare metal melt filter can be quickly replaced to improve production safety and reliability.

[0049] As Figure 14 、 15 shown, the inner tank body 23 of the filter inner tank 2 has a structure that is wider at the top and narrower at the bottom. It is made of metal, and different metal materials can be used for different metal melts. For example, for an aluminum alloy melt, a filter inner tank made of stainless steel can be used. The upper end of the inner tank body 23 extends outward to form a first flange outer edge 21, which is used to overlap with the first through hole of the top cover 12, so that the filter inner tank 2 is installed inside the filter body 1 to prevent the filter inner tank 2 from falling. A number of lifting rings 22 are provided below the flange outer edge 21. The number of lifting rings 22 is preferably 4, and one lifting ring 22 is provided at each of the four corners of the flange outer edge 21. The width of the first flange outer edge 21 is greater than the width of the outer shell 11, and the first flange outer edge 21 extends outside the peripheral wall of the outer shell 11 for easy hoisting. The lower end of the inner tank body 23 extends inward to form a receiving interface 24, which is used to overlap the filter element 5. There is a 5 mm gap between the bottom of the receiving interface 24 and the top of the second flange outer edge 31 of the filter liquid collection chute 3, so that heat can enter the filter liquid collection chute 3 to heat the bottom surface of the filter element 5 and the filter liquid collection chute 3. The inner part of the inner tank body 21 is coated with a release coating to prevent the metal melt from sticking and being difficult to clean. After the metal melt filter is installed, the heat preservation cover 4 covers the first flange outer edge 21 of the filter inner tank 2 to form a closed space inside the filter inner tank 2 and improve the heating efficiency. When the metal melt filter needs to be cast with metal melt after preheating, the heat preservation cover 4 can be removed using a lifting hook, and the filter body 1 can still be energized to supply heat to the metal melt. When the filtration is completed, the filter inner tank 2 can be taken out using a special lifting tool to quickly clean the filter element 5 and the remaining metal residues inside, then replace the filter element 5, fill the gap with refractory material, and put it back for standby. The filter liquid collection chute 3 can be taken out using a special fixture to quickly clean the remaining metal shell, and then put it back for standby.

[0050] In one embodiment, as Figure 7 、 8As shown, the outer shell 11 is a square shell structure with a cross-section in the shape of a "J". Reinforcing blocks 111 are provided at the four inner corners, and a protective baffle 112 is provided on one side of the top. The protective baffle 112, the reinforcing blocks 111 and the outer shell 11 can be integrally formed. A number of wiring ports 113 are opened at the lower part of the outer shell 11. The number of the wiring ports 113 is preferably 8, with 2 at each of the four sides. Threaded holes are provided at the top of the reinforcing blocks 111. As Figure 9 , 10 shown, the top cover 12 is a square socket structure. Countersunk bolt holes matching the threaded holes are provided at the top, so that the top cover 12 is connected to the outer shell 11. The top cover 12 can be separately removed to facilitate the replacement of the heating plate and the insulating seat. As Figure 11 shown, the insulating seat 15 is a square plate-like structure made of high-temperature resistant, insulating and heat-insulating material. The first through hole 152 provided in the middle is a square through hole. Cutouts 153 matching the reinforcing blocks 111 are provided at the four corners, and a number of wiring grooves 151 are provided around it. The wiring grooves 151 are strip-shaped groove structures. The number of the wiring grooves 151 is preferably 8, with 2 at each of the four sides. As Figure 12 shown, the heating plate 16 is a square plate-like structure. Wiring posts 161 that can be inserted into the wiring grooves 151 are provided at the lower end. Preferably, 2 wiring posts 161 are provided on each heating plate 16. The heating plate 16 has a lower wire-out structure, which can effectively reduce the temperature of the wiring terminals and improve the service life of the heating plate and the high-temperature resistant wire. As Figure 13 shown, 4 heating plates 16 are inserted into the 8 wiring grooves 151 of the insulating seat 15. As Figure 1 shown, the insulation box cover 4 is a square structure. Insulation cover hanging rings 41 are provided at the top. The exterior is made of metal material and the interior is filled with insulation material. The outer contour of the insulation cover 4 is larger than the inner opening size of the top cover 12 of the filter body 1, so that when the filter inner tank 2 is taken out, the insulation cover 4 can still be used to cover the filter body 1 for heat preservation. As Figure 14 , 15 shown, the inner tank body 23 of the filter inner tank 2 is a square barrel-like structure. The outer edge 21 of the first flange is a square flange, and the receiving port 24 is a square receiving port. The filter element 5 is a square foam ceramic filter element. Its outer dimension is 2 - 3 mm smaller than the inner dimension of the inner tank body 23 on each side, which is convenient for installing the filter element and can be lapped on the square receiving port. This gap is filled with refractory material to prevent the filter element from moving or the molten metal from leaking.

[0051] The metal melt filter provided by the utility model can avoid problems such as low heating efficiency, long heating time, large energy consumption, and heavy overall weight caused by the low thermal conductivity of refractory materials by using a metal inner liner and a metal liquid collection chute, achieving rapid temperature rise, saving energy consumption, and reducing production costs. Moreover, both the filter inner liner and the filter liquid collection chute of it are of a quick-disassembly structure, which can be disassembled and cleaned conveniently and quickly, effectively improving production efficiency and reducing production spare parts. The heating range of the metal melt filter can cover the side and bottom of the filter inner liner, making the filter inner liner evenly heated. During the filtering process, heat can still be continuously and evenly provided, improving the melt filtering effect.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of implementation of the present invention. Any equivalent changes and modifications made within the protection scope of the present invention shall be considered to fall within the protection scope of the present invention.

Claims

1. A metal melt filter, characterized in that: The metal melt filter comprises a filter body (1), a filter liner (2), a filter liquid collecting trough (3), a heat-insulating cover (4) and a filter sheet (5); The filter body (1) comprises a housing (11), a top cover (12), an insulating seat (15) and a heating plate (16); The top of the shell (11) is connected to the top cover (12); the center of the top cover (12) has a first through hole connecting the inside and outside of the shell (11); the filter liner (2) is installed in the shell (11) through the first through hole; the filter plate (5) is arranged at the bottom of the filter liner (2); the insulating seat (15) is arranged at the bottom of the shell (11); the center of the insulating seat (15) has a second through hole connecting the inside and outside of the shell (11); a plurality of heating plates (16) are arranged on the insulating seat (15) and surround the filter liner (2); the bottom of the shell (11) is provided with the filter collecting trough (3); the heat preservation cover (4) covers the top cover (12).

2. The metal melt filter according to claim 1, characterized in that: The housing (11) comprises a peripheral wall (115), a supporting portion (116) extending inwardly along the bottom of the peripheral wall (115) and perpendicularly to the peripheral wall (115), and a supporting portion (117) extending upwardly along the supporting portion (116) and perpendicularly to the supporting portion (116); the supporting portion (116) is used to set the insulating seat (15) and the heating plate (16), and the supporting portion (117) is used to set the filter liquid collecting trough (3).

3. The metal melt filter according to claim 2, characterized in that: The liquid collecting trough body (32) of the filter liquid collecting trough (3) is a structure that is wide at the top and narrow at the bottom; a second flange outer edge (31) is provided at the upper end of the liquid collecting trough body (32), and the second flange outer edge (31) is overlapped with the support portion (117).

4. The metal melt filter according to claim 1, characterized in that: The inner liner body (23) of the filter liner (2) is a structure that is wide at the top and narrow at the bottom; a first flange outer edge (21) is extended outward from the upper end of the inner liner body (23) for overlapping the first through hole of the top cover (12) so that the filter liner (2) can be installed in the filter body (1); a receiving interface (24) is extended inward from the lower end of the inner liner body (23) for overlapping the filter plate (5).

5. The metal melt filter according to claim 4, characterized in that: A plurality of lifting rings (22) are arranged under the outer edge (21) of the flange.

6. The metal melt filter according to claim 1, characterized in that: The filter body (1) also includes a heating plate quick socket (13), and the heating plate (16) is connected to the heating plate quick socket (13) via a wire.

7. The metal melt filter according to claim 1, characterized in that: The filter body (1) also includes a thermocouple quick socket (14), and the thermocouple of the heating plate (16) is connected to the thermocouple quick socket (14) via a wire.

8. The metal melt filter according to claim 1, characterized in that: The outer shell (11) is a square shell structure, and reinforcement blocks (111) are provided at the four inner corners thereof, and threaded holes are provided at the tops of the reinforcement blocks (111); the top cover (12) is a square socket-type structure, and countersunk bolt holes are provided at the top thereof to cooperate with the threaded holes so as to connect the top cover (12) to the outer shell (11).

9. The metal melt filter according to claim 8, characterized in that: The insulating seat (15) is a square plate-shaped structure, the four corners of which are notched corners that match the reinforcing block (111), and wiring grooves (151) are arranged around it.

10. The metal melt filter according to claim 9, characterized in that: The heating plate (16) is a square plate-shaped structure, and a terminal post (161) which can be plugged into the terminal slot (151) is provided at its lower end.

Images