A metal smelting holding furnace

Abstract

The utility model provides a metal smelting heat preservation furnace relates to metal smelting technical field, include: smelting heat preservation furnace, the top of smelting heat preservation furnace is provided with furnace cavity, the side of furnace cavity inner chamber top is passed through and is provided with the discharge nozzle, smelting heat preservation furnace one side top's middle part is fixedly connected with F type connecting plate. The utility model, start motor and electric hydraulic cylinder two elongation, rotate the special steel brush to the hard metal slag and slight oxidized layer that adsorb in the inner wall of furnace cavity are cleaned, such design does not need manual special steel brush to clean the inner wall of furnace cavity, holds T type limit rod and lifts up, limit ball moves upward, can hold the rotation shaft two and move to the opening, complete disassembly, the rotation shaft two is inserted from the opening, T type limit block is embedded in T type limit groove two inside, moves T type limit pole downward, square limit block is embedded in square limit groove inside, can replace the stirring plate and special steel brush, is suitable for different needs, and practicality increases.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a metal smelting holding furnace. Background Technology

[0002] Metal smelting refers to the process of melting and tempering metal materials and other auxiliary materials in a heating furnace, where the materials undergo certain physical and chemical changes at high temperatures. It is also one of the casting production processes.

[0003] In the existing technology, metal smelting holding furnaces are commonly used in metal smelting. When using metal smelting holding furnaces for metal smelting, it has been found that in order to prevent contamination of the newly smelted metal, some metal smelting holding furnaces require workers to use special steel brushes to clean the hard metal slag and slight oxide layer adsorbed on the inner wall of the furnace cavity before smelting. This method is relatively inconvenient during cleaning. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a metal smelting and holding furnace, comprising: a smelting and holding furnace, wherein a furnace cavity is formed at the top of the smelting and holding furnace, a discharge nozzle is formed through one side of the top of the furnace cavity, an F-shaped connecting plate is fixedly connected to the middle part of the top of one side of the smelting and holding furnace, a connecting rod is fixedly connected to one end of the top of both sides of the smelting and holding furnace, a heating chamber is formed inside the smelting and holding furnace, the heating chamber is located around the outside of the furnace cavity, a wire-passing groove is formed inside one of the connecting rods and the smelting and holding furnace, the wire-passing groove communicates with the inner cavity of the heating chamber, a heating resistance wire is fixedly connected to the arc-shaped surface of one side of the inner cavity of the heating chamber in a spiral shape, an n-shaped support arm is fixedly connected to the top of the smelting and holding furnace, a T-shaped limiting groove is formed on both sides of the inside of the n-shaped support arm, a convenient replacement drive assembly is provided at the top of the inside of the smelting and holding furnace, and a stirring and cleaning assembly is provided inside the convenient replacement drive assembly.

[0006] Furthermore, triangular brackets are mounted on the surfaces of the two connecting rods via bearing sleeves. A base plate is fixedly connected to the bottom of the two triangular brackets. Support legs are fixedly connected to the four corners of the bottom of the base plate. Two support plates are fixedly connected to one end of the top side of the base plate. I-shaped connectors are movably embedded inside the two support plates and the F-shaped connecting plate. A connecting plate is fixedly connected to one end of each of the two I-shaped connectors. An electric hydraulic cylinder is fixedly connected to the inner side of the two connecting plates.

[0007] Furthermore, the conveniently replaceable drive component includes an electric hydraulic cylinder two. The output end of the electric hydraulic cylinder two is fixedly connected to a motor mounting block. T-shaped limiting plates are fixedly connected to the top of both sides of the motor mounting block. A cross-shaped motor mounting groove is opened inside the motor mounting block. A motor is fixedly embedded inside the cross-shaped motor mounting groove. A rotating shaft one is fixedly connected to the output end of the motor. The top of the surface of the rotating shaft one is embedded in the inside of the motor mounting block through a bearing. A T-shaped limiting groove two is opened through one side of the arc-shaped surface of the rotating shaft one. A sleeve is fixedly fitted on the surface of the rotating shaft one. A limiting ball is movably fitted inside the sleeve. The sleeve is located below the motor mounting block.

[0008] Furthermore, an insertion groove 1 extends upward from one side of the bottom of the sleeve, and a T-shaped groove is formed at the top of the insertion groove 1. Insertion grooves 2 are formed on both sides of the lower middle part of the insertion groove 1. A T-shaped limiting rod movable groove is formed through the other side of the arc-shaped surface of the sleeve. A T-shaped limiting rod is fixedly connected to one end of the limiting ball. An embedding groove is formed through the top of the limiting ball from top to bottom. A square limiting groove is formed through the bottom of the limiting ball from bottom to top. The surface of the T-shaped limiting rod is movably fitted and embedded in the interior of the T-shaped limiting rod movable groove. The embedding groove and the interior of the square limiting groove are interconnected.

[0009] Furthermore, the stirring and cleaning assembly includes two rotating shafts, each with a T-shaped limiting block fixedly connected to its top end, and a square limiting block fixedly fitted onto the upper middle part of each rotating shaft surface. Multiple stirring plates are fixedly connected to both sides of the bottom of one rotating shaft surface, and multiple connecting plates are fixedly connected to both sides of the bottom of the other rotating shaft surface. A U-shaped plate is fixedly connected to the other end of each connecting plate, and multiple special steel brushes are fixedly connected to one side of the U-shaped plate.

[0010] Furthermore, the top of the second electric hydraulic cylinder is fixedly connected to the top of the inner side of the n-shaped support arm, and the surfaces of one end of the two T-shaped limiting plates are correspondingly and movably fitted into the interior of the two T-shaped limiting grooves.

[0011] Furthermore, the surfaces of the two rotating shafts are movably fitted and embedded inside the insertion groove and the embedding groove, the surfaces of the two T-shaped limiting blocks are movably fitted and embedded inside the T-shaped limiting groove, and the surfaces of the two square limiting blocks are movably fitted and embedded inside the square limiting groove.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. This utility model uses an external controller to start a motor and an electric hydraulic cylinder to extend and rotate a special steel brush to clean the hard metal slag and slight oxide layer adsorbed on the inner wall of the furnace cavity. This design eliminates the need for manual cleaning of the inner wall of the furnace cavity by holding a special steel brush.

[0014] 2. In this utility model, by holding the T-shaped limiting rod and lifting it upwards, the limiting ball moves upwards, allowing the rotating shaft to be moved towards the opening for disassembly. The rotating shaft is then inserted into the opening, and the T-shaped limiting block is embedded inside the T-shaped limiting groove. Moving the T-shaped limiting rod downwards causes the square limiting block to be embedded inside the square limiting groove. This design allows for the replacement of the stirring plate and the special steel brush, adapting to different needs and increasing practicality. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a metal smelting holding furnace provided by this utility model;

[0016] Figure 2 A schematic diagram of an I-shaped connecting component for a metal smelting holding furnace provided by this utility model;

[0017] Figure 3 A cross-sectional view of a metal smelting holding furnace provided by this utility model;

[0018] Figure 4 A schematic diagram of a conveniently replaceable drive component for a metal smelting holding furnace provided by this utility model;

[0019] Figure 5 A side sectional view of a conveniently replaceable drive assembly for a metal smelting holding furnace provided by this utility model;

[0020] Figure 6 A schematic diagram of a limiting ball for a metal smelting holding furnace provided by this utility model;

[0021] Figure 7 A schematic diagram of a stirring and cleaning assembly for a metal smelting and holding furnace provided by this utility model;

[0022] Figure 8 A partial schematic diagram of a stirring and cleaning component for a metal smelting and holding furnace provided by this utility model.

[0023] Legend:

[0024] 1. Melting and holding furnace; 101. Furnace cavity; 102. Discharge nozzle; 103. F-type connecting plate; 104. Connecting rod; 105. Heating chamber; 106. Wire trough; 107. Heating resistance wire; 108. Triangular bracket; 109. Base plate; 110. Support leg; 111. Support plate; 112. I-shaped connector; 113. Connecting plate one; 114. Electric hydraulic cylinder one; 115. N-type support arm; 116. T-type limiting groove one; 2. Conveniently replaceable drive assembly; 201. Electric hydraulic cylinder two; 202. Motor mounting block; 203. T-type limiting plate; 204. Cross-shaped motor mounting slot; 205. Motor; 206. Shaft 1; 207. T-shaped limiting slot 2; 208. Sleeve; 209. Insertion slot 1; 210. T-shaped slot; 211. Insertion slot 2; 212. T-shaped limiting rod movable slot; 213. Limiting ball; 214. T-shaped limiting rod; 215. Embedded slot; 216. Square limiting slot; 3. Mixing and cleaning assembly; 301. Shaft 2; 302. T-shaped limiting block; 303. Square limiting block; 304. Mixing plate; 305. Connecting plate 2; 306. U-shaped plate; 307. Special steel brush. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-8 This utility model provides a technical solution: a metal smelting and holding furnace, comprising: a smelting and holding furnace 1, a furnace cavity 101 opened at the top of the smelting and holding furnace 1, a discharge nozzle 102 extending through one side of the top of the inner cavity of the furnace cavity 101, an F-shaped connecting plate 103 fixedly connected to the middle part of the top of one side of the smelting and holding furnace 1, connecting rods 104 fixedly connected to one end of the top of both sides of the smelting and holding furnace 1, a heating chamber 105 opened inside the smelting and holding furnace 1, the heating chamber 105 surrounding the outer side of the furnace cavity 101, one of which is connected to... The rod 104 and the inside of the smelting and holding furnace 1 are provided with a wire-passing groove 106, which is connected to the inner cavity of the heating chamber 105. The arc-shaped surface on one side of the inner cavity of the heating chamber 105 is spirally connected to a heating resistance wire 107. The top of the smelting and holding furnace 1 is fixedly connected with an n-shaped support arm 115. Both sides of the inside of the n-shaped support arm 115 are provided with T-shaped limiting grooves 116. The top of the inside of the smelting and holding furnace 1 is provided with a convenient replacement drive assembly 2. The inside of the convenient replacement drive assembly 2 is provided with a stirring and cleaning assembly 3.

[0027] Specifically: The external controller starts the motor 205 and the electric hydraulic cylinder 201, which extend and rotates. A special steel brush 307 cleans the hard metal slag and slight oxide layer adsorbed on the inner wall of the furnace cavity 101. This design eliminates the need for manual cleaning of the furnace cavity's inner wall with a handheld steel brush. Holding the T-shaped limit rod 214 upwards causes the limit ball 213 to move upwards, allowing the hand to grasp the rotating shaft 301 and move it towards the opening to complete disassembly. The rotating shaft 301 is then inserted into the opening, and the T-shaped limit... Position block 302 is embedded inside T-shaped limiting groove 207. T-shaped limiting rod 214 moves downward. Square limiting block 303 is embedded inside square limiting groove 216. This design allows for the replacement of stirring plate 304 and special steel brush 307 to meet different needs and increase practicality. A heat insulation plate (not shown in the figure) is fixedly connected around the bottom surface of the heating chamber 105 relative to the heating resistance wire 107 on the other side of the heating chamber 105 to prevent heat loss.

[0028] In one embodiment, triangular brackets 108 are mounted on the surfaces of the two connecting rods 104 via bearing sleeves. A base plate 109 is fixedly connected to the bottom end of the two triangular brackets 108. Support legs 110 are fixedly connected to the four corners of the bottom of the base plate 109. Two support plates 111 are fixedly connected to one end of the top side of the base plate 109. I-shaped connectors 112 are movably embedded inside the two support plates 111 and the F-shaped connecting plate 103. A connecting plate 113 is fixedly connected to one end of each of the two I-shaped connectors 112. An electric hydraulic cylinder 114 is fixedly connected to the inner side of the two connecting plates 113.

[0029] Specifically, such as Figure 1-3 As shown: When it is necessary to pour out the molten metal inside the furnace chamber 101, the electric hydraulic cylinder 114 can be extended by controlling the external controller to push one end of the molten holding furnace 1 upward, so that the molten holding furnace 1 rotates around the connecting rod 104 as the center, the furnace chamber 101 tilts, and the molten metal inside the furnace chamber 101 flows out from the discharge nozzle 102; the I-shaped connector 112 is designed in an I-shape to prevent the I-shaped connector 112 from detaching from the inside of the F-type connecting plate 103 and the support plate 111.

[0030] In one embodiment, the convenient replacement drive component 2 includes an electric hydraulic cylinder 201. The output end of the electric hydraulic cylinder 201 is fixedly connected to a motor mounting block 202. T-shaped limiting plates 203 are fixedly connected to the top of both sides of the motor mounting block 202. A cross-shaped motor mounting groove 204 is opened inside the motor mounting block 202. A motor 205 is fixedly embedded inside the cross-shaped motor mounting groove 204. A rotating shaft 206 is fixedly connected to the output end of the motor 205. The top of the surface of the rotating shaft 206 is embedded in the motor mounting block 202 through a bearing. A T-shaped limiting groove 207 is opened through one side of the arc-shaped surface of the rotating shaft 206. A sleeve 208 is fixedly sleeved on the surface of the rotating shaft 206. A limiting ball 213 is movably fitted inside the sleeve 208. The sleeve 208 is located below the motor mounting block 202.

[0031] Specifically, such as Figure 4 As shown: The motor 205 is fixedly embedded inside the cross-shaped motor mounting slot 204 to secure the motor 205 and prevent it from shaking during operation, which would affect the normal use of the metal smelting holding furnace.

[0032] In one embodiment, a first insertion groove 209 extends upward from one side of the bottom of the sleeve 208. A T-shaped groove 210 is formed at the top of the first insertion groove 209. Two insertion grooves 211 are formed on both sides of the lower middle part of the first insertion groove 209. A T-shaped limit rod movable groove 212 is formed through the other side of the arc-shaped surface of the sleeve 208. A T-shaped limit rod 214 is fixedly connected to one end of the limit ball 213. An embedding groove 215 is formed through the top of the limit ball 213 from top to bottom. A square limit groove 216 is formed through the bottom of the limit ball 213 from bottom to top. The surface of the T-shaped limit rod 214 is movably fitted and embedded in the interior of the T-shaped limit rod movable groove 212. The interior of the embedding groove 215 and the interior of the square limit groove 216 are interconnected.

[0033] Specifically, such as Figure 6 As shown: the first insertion groove 209 provides installation space for the second rotating shaft 301, the T-slot 210 provides installation space for the T-shaped limiting block 302, and the second insertion groove 211 provides installation space for the square limiting block 303.

[0034] In one embodiment, the stirring and cleaning assembly 3 includes two rotating shafts 301. T-shaped limiting blocks 302 are fixedly connected to the top of each of the two rotating shafts 301. Square limiting blocks 303 are fixedly fitted on the upper middle part of the surface of each of the two rotating shafts 301. Multiple stirring plates 304 are fixedly connected to both sides of the bottom of the surface of one rotating shaft 301. Multiple connecting plates 305 are fixedly connected to both sides of the bottom of the surface of the other rotating shaft 301. A U-shaped plate 306 is fixedly connected to the other end of the multiple connecting plates 305. Multiple special steel brushes 307 are fixedly connected to one side of the U-shaped plate 306.

[0035] Specifically, such as Figure 7-8 As shown: Special steel brush 307 is a commonly used steel brush for cleaning the inner wall of the furnace cavity of metal smelting holding furnaces, preventing damage to the inner wall of the furnace cavity.

[0036] In one embodiment, the top end of the electric hydraulic cylinder 201 is fixedly connected to the top of the inner side of the n-shaped support arm 115, and the surfaces of one end of the two T-shaped limiting plates 203 are correspondingly and movably fitted into the interior of the two T-shaped limiting grooves 116.

[0037] Specifically, such as Figure 4 As shown: The surface of the T-shaped limiting plate 203 is movably embedded inside the T-shaped limiting groove 116 to limit the movement of the motor mounting block 202, preventing the output end of the electric hydraulic cylinder 201 from rotating and affecting the normal use of this smelting and holding furnace.

[0038] In one embodiment, the surfaces of the two rotating shafts 301 are movably fitted and embedded inside the insertion groove 209 and the embedding groove 215, the surfaces of the two T-shaped limiting blocks 302 are movably fitted and embedded inside the T-shaped limiting groove 207, and the surfaces of the two square limiting blocks 303 are movably fitted and embedded inside the square limiting groove 216.

[0039] Specifically, such as Figure 5-6 As shown: The T-shaped limiting block 302 is movably embedded inside the T-shaped limiting groove 207 to limit the vertical direction of the rotating shaft 301. The T-shaped limiting rod 214 is movably embedded inside the T-shaped limiting rod movable groove 212 to prevent the limiting ball 213 from rotating. The square limiting block 303 is movably embedded inside the square limiting groove 216 so that when the sleeve 208 rotates, it can drive the rotating shaft 301 to rotate. At the same time, it can limit the horizontal position of the square limiting block 303, thus completing the fixation of the rotating shaft 301.

[0040] Working principle: This metal smelting holding furnace is connected to an external power supply device to provide power to the furnace. The external controller is associated with and controls the electric hydraulic cylinder 114, the electric hydraulic cylinder 201, and the motor 205. The external controller can control whether the external power supply device supplies power to the heating resistance wire 107, and can also control the output voltage of the external power supply device to the heating resistance wire 107 to control the heating power of the heating resistance wire 107. In the initial state, the rotating shaft 2 301, which is connected to the special steel brush 307 and the U-shaped plate 306, is in the installed state, the heating resistance wire 107 is not powered, and the electric hydraulic cylinder 114, the electric hydraulic cylinder 201, and the motor 205 are in the stopped state.

[0041] The motor 205 is started by an external controller. The output of the motor 205 drives the rotating shaft 206, sleeve 208 and limit ball 213 to rotate. Since the T-shaped limit block 302 is movably embedded in the T-shaped limit groove 207 and the square limit block 303 is movably embedded in the square limit groove 216, the rotating shaft 206 drives the rotating shaft 301 connected with the U-shaped plate 306 and the special steel brush 307 to rotate. The electric hydraulic cylinder 201 is extended by the external controller, and the rotating special steel brush 307 enters the interior of the furnace chamber 101 to clean the hard metal slag and slight oxide layer adsorbed on the inner wall of the furnace chamber 101. After the treatment is completed, the electric hydraulic cylinder 201 is shortened by the external controller, and then an industrial vacuum cleaner is used to clean the hard metal slag and slight oxide layer brushed off inside the furnace chamber 101.

[0042] This design eliminates the need for manual cleaning of the furnace cavity's inner walls with a special steel brush.

[0043] Replace the rotating shaft 301 connected to the U-shaped plate 306 and the special steel brush 307. Hold the T-shaped limiting rod 214 and lift it upwards. The limiting ball 213 follows the T-shaped limiting rod 214 and moves upwards inside the sleeve 208. The square limiting block 303 connected to the U-shaped plate 306 and the special steel brush 307 disengages from the square limiting groove 216. Then, hold the rotating shaft 301 connected to the U-shaped plate 306 and the special steel brush 307 and move it towards the opening on one side of the insertion groove 209, the T-shaped groove 210, the second insertion groove 211, and the embedded groove 215. This disengages the rotating shaft 301, the T-shaped limiting block 302, and the square limiting block 303 from their interiors, completing the process of connecting the U-shaped plate... Disassemble the second shaft 301 of 306 and the special steel brush 307, keeping the T-shaped limiting rod 214 raised, align the second shaft 301 connected to the stirring plate 304 with the insertion groove 209 and the embedding groove 215, align the T-shaped limiting block 302 with the T-shaped groove 210, and align the square limiting block 303 with the insertion groove 211. Then insert the second shaft 301 from the insertion groove 209, the T-shaped groove 210 and the insertion groove 211, so that the second shaft 301 is embedded in the T-shaped limiting groove 207 and the T-shaped limiting rod 214 is moved downward so that the square limiting block 303 is embedded in the square limiting groove 216, thus completing the fixation of the second shaft 301 connected to the stirring plate 304.

[0044] This design allows for the replacement of the stirring plate 304 and the special steel brush 307 in this metal smelting holding furnace, making it suitable for different needs and increasing its practicality.

[0045] An appropriate amount of the metal raw material to be melted is put into the furnace chamber 101. The external power supply equipment is controlled by the external controller to supply power to the heating resistance wire 107, and the temperature is gradually increased. The heat is transferred to the furnace chamber 101, causing the metal raw material to melt. The temperature of the molten metal is measured by an external infrared thermometer. The output power of the external power supply equipment to the heating resistance wire 107 is adjusted by the external controller as needed to achieve the effect of heating or heat preservation. The electric hydraulic cylinder 201 is extended by the external controller to move the stirring plate 304 into the interior of the furnace chamber 101. Then, the motor 205 is started by the external controller. The output end of the motor 205 drives the stirring plate 304 to rotate, stirring the molten metal and promoting the homogenization of the composition.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A metal smelting holding furnace, characterized in that include: A smelting and holding furnace (1) has a furnace cavity (101) at its top. A discharge nozzle (102) is provided through one side of the top of the furnace cavity (101). An F-type connecting plate (103) is fixedly connected to the middle part of the top of one side of the smelting and holding furnace (1). A connecting rod (104) is fixedly connected to one end of the top of both sides of the smelting and holding furnace (1). A heating chamber (105) is provided inside the smelting and holding furnace (1). The heating chamber (105) surrounds the outside of the furnace cavity (101). One of the connecting rods (104) is connected to the smelting and holding furnace (1). The interior of the furnace is provided with a wire-passing groove (106), which is connected to the inner cavity of the heating chamber (105). A heating resistance wire (107) is fixedly connected to the arc-shaped surface on one side of the inner cavity of the heating chamber (105) in a spiral shape. An n-shaped support arm (115) is fixedly connected to the top of the smelting and holding furnace (1). T-shaped limiting grooves (116) are provided on both sides of the interior of the n-shaped support arm (115). A convenient replacement drive assembly (2) is provided at the top of the interior of the smelting and holding furnace (1). A stirring and cleaning assembly (3) is provided inside the convenient replacement drive assembly (2).

2. A metal smelting holding furnace according to claim 1, characterized in that The surfaces of the two connecting rods (104) are fitted with triangular brackets (108) through bearing sleeves. The bottom ends of the two triangular brackets (108) are fixedly connected to a base plate (109). The four corners of the bottom of the base plate (109) are fixedly connected to support legs (110). One end of the top side of the base plate (109) is fixedly connected to two support plates (111). The interiors of the two support plates (111) and the F-type connecting plate (103) are movably embedded with I-shaped connectors (112). One end of the two I-shaped connectors (112) is fixedly connected to a connecting plate (113). The inner sides of the two connecting plates (113) are fixedly connected to an electric hydraulic cylinder (114).

3. A metal smelting holding furnace according to claim 1, characterized in that: The convenient replacement drive assembly (2) includes an electric hydraulic cylinder two (201), the output end of which is fixedly connected to a motor mounting block (202). T-shaped limiting plates (203) are fixedly connected to the top of both sides of the motor mounting block (202). A cross-shaped motor mounting slot (204) is provided inside the motor mounting block (202), and a motor (205) is fixedly embedded inside the cross-shaped motor mounting slot (204). The output end is fixedly connected to a rotating shaft (206). The top of the surface of the rotating shaft (206) is embedded in the motor mounting block (202) through a bearing. A T-shaped limiting groove (207) is opened through one side of the arc-shaped surface of the rotating shaft (206). A sleeve (208) is fixedly fitted on the surface of the rotating shaft (206). A limiting ball (213) is movably fitted inside the sleeve (208). The sleeve (208) is located below the motor mounting block (202).

4. A metal smelting holding furnace according to claim 3, characterized in that: The sleeve (208) has an extension groove (209) extending upward on one side of its bottom. The top of the extension groove (209) has a T-shaped groove (210). The two sides of the lower middle part of the extension groove (209) have extension grooves (211). The other side of the arc-shaped surface of the sleeve (208) has a T-shaped limit rod movable groove (212). One end of the limit ball (213) is fixedly connected to a T-shaped limit rod (214). The top of the limit ball (213) has an embedding groove (215) extending downward. The bottom of the limit ball (213) has a square limit groove (216) extending upward. The surface of the T-shaped limit rod (214) is movably fitted and embedded in the T-shaped limit rod movable groove (212). The embedding groove (215) and the square limit groove (216) are interconnected.

5. A metal smelting holding furnace according to claim 1, characterized in that: The stirring and cleaning assembly (3) includes two rotating shafts (301). T-shaped limiting blocks (302) are fixedly connected to the top of each of the two rotating shafts (301). Square limiting blocks (303) are fixedly fitted on the upper middle part of the surface of each of the two rotating shafts (301). Multiple stirring plates (304) are fixedly connected to both sides of the bottom of the surface of one of the rotating shafts (301). Multiple connecting plates (305) are fixedly connected to both sides of the bottom of the surface of the other rotating shaft (301). A U-shaped plate (306) is fixedly connected to the other end of the multiple connecting plates (305). Multiple special steel brushes (307) are fixedly connected to one side of the U-shaped plate (306).

6. A metal smelting holding furnace according to claim 3, characterized in that: The top of the electric hydraulic cylinder (201) is fixedly connected to the top of the inner side of the n-shaped support arm (115), and the surfaces of one end of the two T-shaped limiting plates (203) are correspondingly and movably fitted into the interior of the two T-shaped limiting grooves (116).

7. A metal smelting holding furnace according to claim 5, characterized in that: The surfaces of the two rotating shafts (301) are movably fitted and embedded inside the insertion groove (209) and the embedding groove (215), the surfaces of the two T-shaped limiting blocks (302) are movably fitted and embedded inside the T-shaped limiting groove (207), and the surfaces of the two square limiting blocks (303) are movably fitted and embedded inside the square limiting groove (216).

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