Special steel die casting protective casting device

Abstract

The application provides a special steel die casting protection casting device, and the auxiliary mechanism further comprises a base, balls, a spherical ball, a connecting rod, a rotating shaft and a fan blade, the base is rotated in the groove of the fixed plate, the balls are rolled on the two sides of the upper end of the inner wall of the base, the spherical ball is hinged to the middle of the upper end of the base, the connecting rod is located on the two sides of the lower end of the spherical ball, the rotating shaft is rotated at the lower end of the connecting rod, the fan blade is distributed on the two sides of the lower end of the connecting rod, the spherical ball is connected to the inner wall of the base through the spherical body, the spherical ball can be driven by the connecting rod to rotate 360 degrees, the rotating shaft can drive the fan blade to rotate, and the fan blade can assist the internal steel of the mold plate to dissipate heat when rotating. By utilizing the rolling inertia of the balls on the inner side of the fixed plate, the balls on the two sides of the fixed plate can repeatedly hit the spherical ball, and the number of hits of the balls on one side of the fixed plate on the spherical ball is 2-3 times, so that the auxiliary mechanism can assist the heat dissipation and cooling of the cast steel after the impurities in the flue gas are sucked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundry molding, in particular to a special steel die casting protection pouring device. BACKGROUND

[0002] When steel is formed, it needs to be cast by a casting mold. After steel is melted and refined, the purity and gas content of the molten steel are very low. During the casting process, the molten steel in liquid state at high temperature contacts with air when it comes out of the outlet of the refining ladle to the pouring nozzle, and a lot of oxide fumes are generated when the steel is cast without protection, and the molten steel splashes, which is easy to scald people, resulting in the need for a protection device to form protection outside the pouring mold for the pouring device.

[0003] The research on the pouring device found the following problems:

[0004] The pouring device can usually only be equipped with a cover to achieve protection effect after the molten steel enters the pouring device. The molten steel is easy to splash when it enters the pouring device, which is easy to scald people, resulting in the pouring device being unable to avoid the splashing of the molten steel during pouring, and the pouring device cannot filter the fumes generated after the oxidation of the molten steel, which is easy for the operator to inhale harmful fumes after removing the cover.

[0005] At present, the existing technology CN201580061291.8 casting mold discloses a mold. The mold can evenly transmit the force of the connecting rod type sliding mechanism to the sliding horizontal mold as a whole in the state of transmitting equal force to the four corners of the sliding horizontal mold during demolding. Thus, the casting mold can prevent the sliding horizontal mold and the product (cast product) from being pulled to smoothly demold.

[0006] The present application mainly solves the problem that the pouring device cannot avoid the splashing of the molten steel when it enters the interior. SUMMARY

[0007] To solve the above technical problems, the present application provides a special steel die casting protection pouring device to solve the problems described in the background art.

[0008] The purpose and effect of the special steel die casting protection pouring device are achieved by the following specific technical means: a special steel die casting protection pouring device, comprising a mold foot, the upper end of the mold foot being provided with a mold plate, the upper end of the mold plate being provided with a pouring mechanism, the pouring mechanism comprising a fixed plate, a stripping plate and a pouring pipe, the stripping plate being slidingly nested at the upper end of the mold plate, the pouring pipe penetrating the two sides of the stripping plate, and the fixed plate being slidingly nested at the upper end of the stripping plate.

[0009] Further, the mold plate and the pouring pipe are vertically penetrated, the mold plate is concave inside, the mold plate is penetrated by a hole inside, and the mold foot is placed on the ground.

[0010] Further, the stripping plate is in the middle of the upper end of the mold plate, the fixed plate is vertically and abuttingly connected with the mold plate, the auxiliary mechanism is arranged on the lower end of the fixed plate, and the auxiliary mechanism is horizontally corresponding to the stripping plate.

[0011] Further, the injection pipe penetrates and extends to the upper end of the stripping plate, and the internal diameter of the injection pipe is 5-10 cm.

[0012] Further, the auxiliary mechanism comprises a filter layer, a convex strip and a sliding block, the sliding block is slidably arranged on the two sides of the lower end of the fixed plate, the filter layer is slidably and curvedly arranged on the inner side of the sliding block, and the convex strip is arranged on the two sides of the upper end of the filter layer.

[0013] Further, the two sides of the lower end of the fixed plate are provided with grooves, the inside of the grooves is provided with tracks, the sliding block is slidably arranged on the two sides of the inside of the tracks, and when the fixed plate is not abuttingly connected to the upper end of the mold plate, the sliding block is arranged on the two sides of the tracks of the fixed plate.

[0014] Further, the filter layer is in an arc shape, the arc angle is 180°, the filter layer is slidably deformed on the two sides of the lower end of the fixed plate through the sliding block, the filter layer is made of graphitized polystyrene, and a hole is arranged in the middle of the filter layer.

[0015] Further, the convex strip is horizontally arranged, and when the filter layer is horizontally slidably deformed, the convex strip is horizontally slidably arranged below the fixed plate.

[0016] Further, the auxiliary mechanism further comprises a base, a ball, a spherical ball, a connecting rod, a rotating shaft and a fan blade, the base is rotatably arranged in the groove of the fixed plate, the ball is rollingly arranged on the two sides of the upper end of the inner wall of the base, the spherical ball is hingedly arranged in the middle of the upper end of the inside of the base, the connecting rod is arranged on the two sides of the lower end of the spherical ball, the rotating shaft is rotatably arranged on the lower end of the connecting rod, and the fan blade is distributed on the two sides of the lower end of the connecting rod.

[0017] Further, the two sides of the upper end of the inside of the base are provided with sliding rails, the side surface of the sliding rail is in an inverted "8" shape, the ball is horizontally rollingly arranged in the inside of the sliding rail, the ball is rollingly and strikingly arranged on the two sides of the upper end of the spherical ball, and the outer side wall of the base is horizontally frictionally arranged with the convex strip.

[0018] Further, the spherical ball is in a semi-spherical shape, the spherical ball is connected to the inner wall of the base through a spherical body, the spherical ball is rotatably arranged at 360°, the spherical ball is connected to the rotating shaft through the connecting rod, and the connecting rod is inclined at an angle of 15-35°.

[0019] Further, the rotating shaft extends to the lower side of the base, the outer side of the rotating shaft is surrounded by a convex ring, the inner wall of the base is provided with a groove, the groove is in a circular ring shape, the convex ring is rotatably and abuttingly arranged in the inside of the groove, and the overall diameter of the rotating shaft and the fan blade is one half of the diameter of the hole of the filter layer.

[0020] Further, the inside of the injection pipe is sequentially provided with a material barrel and a material guide frame, and the material barrel is arranged at the upper end of the material guide frame.

[0021] Further, the bucket is conical, the inside of the bucket is hollow, the guide frame is spiral, the guide frame is vertically through the lower end of the bucket, and the diameter of the lower end of the bucket is 3-4 cm.

[0022] Beneficial effects:

[0023] 1. When the fixed plate is not attached to the upper end of the mold plate, the sliding block is on both sides of the track of the fixed plate, at this time the filter layer is curved as a whole, when the smoke generated by the oxidation of molten steel in the mold plate enters the inside of the filter layer through the hole of the mold plate, the filter layer can filter the impurities in the smoke;

[0024] 2. After the fixed plate is attached to the upper end of the mold plate, the upper end of the mold plate is extruded to the lower end of the filter layer because the mold plate and the fixed plate are vertically attached, the filter layer is deformed upwards on both sides of the lower end of the fixed plate, the sliding block slides in the internal track of the fixed plate, the distance between the sliding blocks on both sides of the filter layer increases, and when the filter layer is horizontally deformed, the convex strip slides horizontally below the fixed plate, at this time the sliding direction of the convex strips on both sides of the filter layer is opposite;

[0025] 3. The outer wall of the base rubs horizontally with the convex strip, the convex strip slides horizontally, the convex strip can drive the base to swing inside the fixed plate, the outer side of the shaft is surrounded by a convex ring, the inner wall of the base is provided with a groove, the groove is annular, the convex ring is rotatably connected in the groove, the shaft and the fan blade are in a stationary state, which facilitates the smoke to enter the inside of the filter layer for filtering, and avoids the downward flow of smoke into the hole of the mold plate due to the rotation of the fan blade;

[0026] 4. With the swinging of the base, the balls inside the base roll synchronously, the balls on one side of the base hit one side of the ball, the ball can be inclined inside the base, when the ball is inclined, the bottom of the ball is arc-shaped, and the ball is connected to the inner wall of the base through the spherical body, the ball can drive the shaft to rotate 360° through the connecting rod, the shaft can drive the fan blade to rotate, the fan blade can assist the heat dissipation of the steel inside the mold plate when rotating, the balls on both sides of the fixed plate can repeatedly hit the ball through the rolling inertia of the balls inside the fixed plate, the number of hits of the ball by the balls on one side of the fixed plate is 2-3 times, so that the auxiliary mechanism can absorb the impurities in the smoke while assisting the heat dissipation and cooling of the steel after casting;

[0027] 5. After the molten steel enters the inside of the injection pipe, the molten steel first enters the inside of the material bucket, and the molten steel can be guided to the upper end of the guide frame by the conical shape of the material bucket, the guide frame is spiral-shaped, and the molten steel can be quickly guided into the inside of the template, the molten steel first splashes to the outer wall of the lower end of the material bucket when the molten steel splashes upward after entering the lower end of the guide frame, and the molten steel is prevented from splashing during the casting process. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the application.

[0029] Figure 2 It is a partial schematic diagram of the pouring device of the application.

[0030] Figure 3 It is a partial schematic diagram of the pouring device of the application.

[0031] Figure 4 It is a schematic diagram of the fixed plate structure of the application.

[0032] Figure 5 It is a schematic diagram of the bottom structure of the fixed plate of the application.

[0033] Figure 6 It is a schematic diagram of the filter layer assembly structure of the application.

[0034] Figure 7 It is a schematic diagram of the inverted cross-section of the base assembly of the application.

[0035] Figure 8 It is a schematic diagram of the cross-section structure of the base of the application.

[0036] Figure 9 It is a schematic diagram of the stripping plate structure of the application.

[0037] Figure 10 It is a schematic diagram of the cross-section of the injection pipe of the application.

[0038] Figures 1-10 In the above, the correspondence between the component names and the figure numbers is as follows:

[0039] 1 - mold foot, 101 - template, 102 - fixed plate, 103 - stripping plate, 104 - injection pipe, 2 - filter layer, 201 - convex strip, 202 - sliding block, 3 - base, 301 - ball bearing, 302 - spherical ball, 303 - connecting rod, 304 - rotating shaft, 305 - fan blade, 4 - material bucket, 401 - guide frame. DETAILED DESCRIPTION

[0040] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application. Embodiments

[0041] As shown in the accompanying Figure 1 to the accompanying Figure 10 drawings:

[0042] Embodiment 1: A special steel die casting protection casting device, comprising a die foot 1, the upper end of the die foot 1 is provided with a die plate 101, the upper end of the die plate 101 is provided with a pouring mechanism, the pouring mechanism comprises a fixed plate 102, a stripping plate 103 and a pouring pipe 104, the stripping plate 103 is slidingly nested at the upper end of the die plate 101, the pouring pipe 104 penetrates through both sides of the stripping plate 103, and the fixed plate 102 is slidingly nested at the upper end of the stripping plate 103;

[0043] Wherein: the die plate 101 is vertically penetrated by the pouring pipe 104, the die plate 101 is concave inside, the die plate 101 is penetrated by a hole inside, and the die foot 1 is placed on the ground;

[0044] The die plate 101 is penetrated by a hole inside, the hole is an exhaust hole, and the generated oxide flue gas can be exhausted;

[0045] The molten steel enters the inside of the die plate 101 through the pouring pipe 104;

[0046] The stripping plate 103 and the fixed plate 102, the stripping plate 103 is in the middle of the upper end of the die plate 101, the fixed plate 102 is vertically and abuttingly connected with the die plate 101, the two sides of the lower end of the fixed plate 102 are provided with an auxiliary mechanism, and the auxiliary mechanism horizontally corresponds to the stripping plate 103;

[0047] The pouring pipe 104, the pouring pipe 104 penetrates and extends to the upper end of the stripping plate 103, and the inner diameter of the pouring pipe 104 is 5-10 cm;

[0048] Wherein: the molten steel enters the inside of the mold plate 101 through the pouring pipe 104, after the molten steel casting is completed, the fixed plate 102 is vertically and abuttingly connected with the mold plate 101, then the fixed plate 102 and the mold plate 101 are fastened by bolts, when the molten steel comes out from the lower outlet of the refining ladle to the upper end of the pouring pipe 104, it contacts with air, the oxygen content in the air accounts for 21%, the nitrogen content accounts for 78%, the water content and other accounts for 1%, part of the oxygen reacts with Fe, Al, Si, Ca and Mn elements in the molten steel to form corresponding oxides, a large amount of flue gas is generated, the flue gas flows to the lower end of the fixed plate 102 through the holes in the inside of the mold plate 101, and the steel is cast into shape as the temperature of the molten steel decreases;

[0049] Embodiment 2: refer to the attached drawings of the specification Figures 1-6 It can be known that the difference between embodiment 2 and embodiment 1 is that the auxiliary mechanism includes the filter layer 2, the convex strip 201 and the sliding block 202, the sliding block 202 slides on the two sides of the lower end of the fixed plate 102, the filter layer 2 slides and bends on the inner side of the sliding block 202, and the convex strip 201 is on the two sides of the upper end of the filter layer 2;

[0050] Wherein: the sliding block 202, recesses are arranged on the two sides of the lower end of the fixed plate 102, tracks are arranged in the recesses, and the sliding block 202 slides on the two sides of the tracks in the recesses; when the upper end of the fixed plate 102 is not abutted to the mold plate 101, the sliding block 202 is on the two sides of the tracks of the fixed plate 102;

[0051] When the upper end of the fixed plate 102 is not abutted to the mold plate 101, the sliding block 202 is on the two sides of the tracks of the fixed plate 102, at this time, the filter layer 2 is in a whole bending state, and the filter layer 2 is in a whole bending state, which can be referred to the attached drawings of the specification Figure 5 ;

[0052] The tracks are arranged on the two sides of the lower end of the fixed plate 102, and the tracks are arranged horizontally, which can be referred to the attached drawings of the specification Figure 5 ;

[0053] The filter layer 2 is in an arc shape, the arc angle is 180°, the filter layer 2 is deformed by sliding on the two sides of the lower end of the fixed plate 102 through the sliding block 202, the filter layer 2 is made of graphitized polystyrene material, and holes are arranged in the middle of the filter layer 2;

[0054] The filter layer 2 is made of graphitized polystyrene material, the graphitized polystyrene material can resist 200℃ temperature, so that the filter layer 2 is prevented from being dissolved and deformed due to the high temperature in the inside of the mold plate 101;

[0055] The convex strip 201 is arranged horizontally, and the convex strip 201 slides horizontally below the fixed plate 102 when the filter layer 2 is deformed by sliding horizontally;

[0056] When the filter layer 2 is horizontally deformed, the convex strip 201 horizontally slides under the fixed plate 102, at this time, the middle hole of the filter layer 2 changes from a circle to an oval shape, which can be referred to the drawings in the specification Figure 6

[0057] When the upper end of the fixed plate 102 is not attached to the mold plate 101, the sliding block 202 is on both sides of the track of the fixed plate 102, at this time, the filter layer 2 is bent as a whole, and when the smoke generated by the oxidation of molten steel in the mold plate 101 enters the inside of the filter layer 2, the filter layer 2 can filter the impurities in the smoke;

[0058] When the upper end of the fixed plate 102 is attached to the mold plate 101, because the mold plate 101 and the fixed plate 102 are vertically attached, and grooves are opened on both sides of the lower end of the fixed plate 102, at this time, the upper end of the mold plate 101 is pressed to the lower end of the filter layer 2, the filter layer 2 is deformed upwards on both sides of the lower end of the fixed plate 102, and the sliding block 202 slides in the internal track of the fixed plate 102, the distance between the sliding blocks 202 on both sides of the filter layer 2 increases, and when the filter layer 2 is horizontally deformed, the convex strip 201 horizontally slides under the fixed plate 102, at this time, the sliding direction of the convex strip 201 on both sides of the filter layer 2 is opposite;

[0059] Embodiment 3: refer to the drawings in the specification Figures 1-8 It can be known that the difference between embodiment 3 and embodiments 1 and 2 is that the auxiliary mechanism further includes a base 3, a ball 301, a ball 302, a connecting rod 303, a rotating shaft 304 and a fan blade 305, the base 3 rotates in the groove of the fixed plate 102, the ball 301 rolls on both sides of the upper end of the inner wall of the base 3, the ball 302 is hinged to the middle of the upper end inside the base 3, the connecting rod 303 is on both sides of the lower end of the ball 302, the rotating shaft 304 rotates at the lower end of the connecting rod 303, and the fan blade 305 is distributed on both sides of the lower end of the connecting rod 303.

[0060] The base 3 and the ball 301, the sliding rails are opened on both sides of the upper end inside the base 3, the side surface of the sliding rail is in the shape of an inverted "eight", the ball 301 horizontally rolls in the sliding rail, the ball 301 rolls and hits on both sides of the upper end of the ball 302, and the outer side wall of the base 3 horizontally rubs with the convex strip 201.

[0061] The outer side wall of the base 3 horizontally rubs with the convex strip 201, and when the convex strip 201 horizontally slides, the convex strip 201 can drive the base 3 to swing on the inner side of the fixed plate 102.

[0062] Sliding rails are opened on both sides of the upper end inside the base 3, the side surface of the sliding rail is in the shape of an inverted "eight", through the shape of the side surface of the sliding rail, the ball 301 can be prevented from falling downward in the base 3 when rolling on the upper end of the base 3, so as to achieve the effect of facilitating the rolling of the ball 301 while limiting it. ​

[0063] The ball 302 is semispherical, connected to the inner wall of the base 3 by a spherical body, rotates 360°, connected to the rotating shaft 304 by the connecting rod 303, which is inclined at an angle of 15-35°;

[0064] The ball 302 is connected to the inner wall of the base 3 by a spherical body, which is spherical, facilitating the 360° rotation of the ball 302 on the inner side of the base 3;

[0065] The connecting rod 303 is inclined at an angle of 15-35°, when the ball 302 is inclined, the bottom of the ball 302 is arc-shaped, and the ball 302 is connected to the inner wall of the base 3 by a spherical body, the ball 302 can drive the rotating shaft 304 to rotate 360° through the connecting rod 303, which can be referred to as the principle of the unbreakable doll;

[0066] The rotating shaft 304 and the fan blade 305, the rotating shaft 304 extends below the base 3, the outer side of the rotating shaft 304 is surrounded by a convex ring, the inner wall of the base 3 is provided with a groove, the groove is circular, the convex ring rotates and connects inside the groove, the overall diameter of the rotating shaft 304 and the fan blade 305 is half of the diameter of the hole of the filter layer 2;

[0067] The overall diameter of the rotating shaft 304 and the fan blade 305 is half of the diameter of the hole of the filter layer 2, which facilitates the vertical penetration of the rotating shaft 304 and the fan blade 305 with the filter layer 2 when the filter layer 2 deforms;

[0068] The inner wall of the base 3 is provided with a groove, which is circular, as shown in the description Figure 8 ;

[0069] The outer side wall of the base 3 is horizontally rubbed with the convex strip 201, when the convex strip 201 slides horizontally, the convex strip 201 can drive the base 3 to swing on the inner side of the fixed plate 102, since the outer side of the rotating shaft 304 is surrounded by a convex ring, the inner wall of the base 3 is provided with a groove, which is circular, the convex ring rotates and connects inside the groove, the rotating shaft 304 and the fan blade 305 are in a static state, which facilitates the smoke to enter the inside of the filter layer 2 for filtration, avoiding the downward flow of smoke to the hole inside the template 101 due to the rotation of the fan blade 305;

[0070] With the swing of the base 3, the balls 301 on both sides inside the base 3 roll synchronously, and the ball 301 on one side inside the base 3 hits one side of the spherical ball 302. The spherical ball 302 can be inclined inside the base 3. When the spherical ball 302 is inclined, the bottom of the spherical ball 302 is arc-shaped, and the spherical ball 302 is connected to the inner wall of the base 3 through the spherical body. The spherical ball 302 can drive the rotating shaft 304 to rotate 360° through the connecting rod 303. The rotating shaft 304 can drive the fan blade 305 to rotate, which can assist the steel inside the template 101 to dissipate heat. The rolling inertia of the balls 301 inside the fixed plate 102 can repeatedly hit the spherical ball 302 through the balls 301 on both sides of the fixed plate 102. The number of hits of the ball 301 on one side of the fixed plate 102 on the spherical ball 302 is 2-3 times, so that this auxiliary mechanism can assist the steel after casting to dissipate heat and cool down while absorbing the impurities in the flue gas.

[0071] Embodiment 4: Referring to the drawings attached Figure 1 、 9 and 10 can be known that embodiment 4 is different from embodiments 1-3 in that the inside of the pouring pipe 104 is sequentially distributed with the material bucket 4 and the material guide frame 401, and the material bucket 4 is at the upper end of the material guide frame 401.

[0072] Among them: the material bucket 4 is conical, the inside of the material bucket 4 is hollow, and the material guide frame 401 is spiral, and the material guide frame 401 is vertically penetrated with the discharge port at the lower end of the material bucket 4, and the diameter of the discharge port at the lower end of the material bucket 4 is 3-4 cm.

[0073] The diameter of the discharge port at the lower end of the material bucket 4 is 3-4 cm, which avoids the situation that the molten steel cannot quickly pass through the material guide frame 401 into the inside of the template 101 due to the small discharge port.

[0074] Among them: after the molten steel enters the inside of the pouring pipe 104, the molten steel first enters the inside of the material bucket 4. The conical shape of the material bucket 4 can guide the molten steel to the upper end of the material guide frame 401. The spiral shape of the material guide frame 401 can assist the molten steel to quickly enter the inside of the template 101. The shape of the material bucket 4 and the material guide frame 401 can prevent the molten steel from splashing during the casting process when the molten steel splashes upward and first splashes to the outer wall of the lower end of the material bucket 4.

Claims

1. A protective casting device for die casting of special steel, comprising a die foot, characterized in that: The upper end of the die foot is provided with a die plate, the upper end of the die plate is provided with a pouring mechanism, the pouring mechanism comprises a fixed plate, a stripping plate and a pouring pipe, the stripping plate is slidingly nested at the upper end of the die plate, the pouring pipe penetrates the two sides of the stripping plate, and the fixed plate is slidingly nested at the upper end of the stripping plate; The die plate is vertically penetrated by the pouring pipe, the inside of the die plate is concave, the inside of the die plate penetrates a hole, and the die foot is placed on the ground; The stripping plate is in the middle of the upper end of the die plate, the fixed plate is vertically and abuttingly connected with the die plate, the two sides of the lower end of the fixed plate are provided with auxiliary mechanisms, and the auxiliary mechanisms horizontally correspond to the stripping plate; The pouring pipe penetrates and extends to the upper end of the stripping plate, and the inner diameter of the pouring pipe is 5-10 cm; The auxiliary mechanism comprises a filter layer, a convex strip and a sliding block, the sliding block is slidingly arranged on the two sides of the lower end of the fixed plate, the filter layer is slidingly and curvedly arranged on the inner side of the sliding block, the convex strip is arranged on the two sides of the upper end of the filter layer, the filter layer is arc-shaped, the arc angle is 180°, the filter layer is slidingly deformed on the two sides of the lower end of the fixed plate through the sliding block, and the middle part of the filter layer penetrates a hole; The convex strip is horizontally arranged, and when the filter layer is horizontally slidingly deformed, the convex strip is horizontally slidingly arranged below the fixed plate; The auxiliary mechanism further comprises a base, a ball, a ball, a connecting rod, a rotating shaft and a fan blade, the base is rotatably arranged in the groove of the fixed plate, the ball is rollingly arranged on the two sides of the inner wall of the base, the ball is hingedly connected to the middle part of the inner upper end of the base, the connecting rod is arranged on the two sides of the lower end of the ball, the rotating shaft is rotatably arranged on the lower end of the connecting rod, and the fan blade is distributed on the two sides of the lower end of the connecting rod.

2. The apparatus according to claim 1, wherein: The two sides of the lower end of the fixed plate are provided with grooves, the inside of the groove is provided with a track, the sliding block is slidingly arranged on the two sides of the track, and when the fixed plate is not abuttingly connected to the upper end of the die plate, the sliding block is arranged on the two sides of the track of the fixed plate.

3. The apparatus according to claim 1, wherein: The two sides of the inner upper end of the base are provided with sliding rails, the side surface of the sliding rail is in the shape of an inverted "8", the ball is horizontally rollingly arranged in the sliding rail, the ball is rollingly and strikingly arranged on the two sides of the upper end of the ball, and the outer side wall of the base is horizontally frictionally arranged with the convex strip.

4. The apparatus according to claim 1, wherein: The ball is semispherical, the ball is connected to the inner wall of the base through a spherical body, the ball is rotatable by 360°, the ball is connected to the rotating shaft through the connecting rod, and the connecting rod is inclined by 15-35°.

5. The apparatus according to claim 1, wherein: The rotating shaft extends below the base, the outer side of the rotating shaft is surrounded by a convex ring, the inner wall of the base is provided with a groove, the groove is in the shape of a circular ring, the convex ring is rotatably and abuttingly arranged in the groove, and the overall diameter of the rotating shaft and the fan blade is half of the diameter of the hole of the filter layer.

6. The apparatus according to claim 1, wherein: The inside of the pouring pipe is sequentially provided with a material barrel and a guide frame, and the material barrel is arranged at the upper end of the guide frame.

7. A protective casting device for die casting of special steel according to claim 6, characterized in that: The material barrel is in the shape of a cone, and the inside of the material barrel is hollow.

8. The apparatus according to claim 6, wherein: The guide frame is in the shape of a spiral, the guide frame is vertically penetrated by the discharge port at the lower end of the material barrel, and the diameter of the discharge port at the lower end of the material barrel is 3-4 cm.

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