Slurry barrel for investment casting

Abstract

The utility model relates to a slurry barrel for investment casting, which comprises a slurry barrel body, a barrel cover body, a stirring mechanism and a cover body automatic opening and closing mechanism, the slurry barrel body comprises an outer barrel body fixed on a base and an inner barrel body arranged in the outer barrel body, the inner barrel body can rotate around the central axis of the inner barrel body, the stirring mechanism comprises an outer support frame and an L-shaped stirring blade, and the outer support frame is fixed on the base. The outer supporting frame is located on one side outside the outer barrel body, the stirring blade comprises a vertical section and a horizontal section, slope surfaces are arranged on the slurry facing sides of the vertical section and the horizontal section, the upper end of the vertical section is connected with the upper end of the outer supporting frame, and the barrel cover body covers an opening in the top end of the outer barrel body in an openable and closable mode through the cover body automatic opening and closing mechanism. The stirring mechanism has the advantages that the vertical section and the horizontal section of the stirring mechanism are respectively provided with the slope surface for cutting water to disperse slurry, so that the stirring resistance is small, the dispersion effect on the slurry is good, and the stirring efficiency is high; the can cover body is driven by the cover body automatic opening and closing mechanism to automatically turn over to be opened or closed, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of investment casting, and specifically relates to a slurry bucket for investment casting. Background Technology

[0002] In the field of investment casting, a slurry bucket is typically used to apply slurry to the surface of a wax model to form a refractory coating. To ensure uniformity of the slurry and prevent settling or stratification, continuous stirring of the slurry is usually required. To facilitate the placement of the wax model into the slurry bucket (unaffected by the stirring structure), the slurry bucket and its stirring structure are usually designed differently from the traditional form where the container is stationary and the blades rotate continuously. Instead, the slurry bucket is set to rotate by a motor-driven mechanism, and the blades are positioned along the edge of the slurry bucket in an L-shape.

[0003] The conventional slurry tanks used in investment casting have the following shortcomings: insufficient blade strength, which easily leads to blade deformation and damage when impacted by slurry; the blades are simple rectangular plate designs, resulting in high resistance and poor mixing effect; the height of the blades in the inner tank cannot be adjusted, and the mixing effect cannot be adjusted according to the amount of slurry; the lack of a slurry temperature control mechanism, which can easily damage the wax model and cause slurry application failure if the slurry temperature is too high; and the lack of a simple and easy-to-operate automatic opening and closing mechanism for the slurry tank lid, making opening and closing the lid inconvenient. Utility Model Content

[0004] This invention provides a slurry bucket for investment casting, aiming to overcome the above-mentioned shortcomings in the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A slurry tank for investment casting includes a slurry tank body, a tank cover body, a stirring mechanism, and an automatic opening and closing mechanism for the cover. The slurry tank body includes an outer tank body fixed on a base and an inner tank body disposed inside the outer tank body. The inner tank body is driven to rotate around its own central axis by a motor drive mechanism disposed on the base. The stirring mechanism includes an outer support frame and an L-shaped stirring blade. The outer support frame is located on the outside of the outer tank body and its bottom is fixedly connected to the base. The stirring blade includes a vertical section and a horizontal section located at the lower end of the vertical section. Both the vertical section and the horizontal section have a sloping surface on the side facing the slurry, which cuts water and disperses the slurry through the tip of the slope. The upper end of the vertical section is connected to the upper end of the outer support frame. The vertical section is disposed close to the inner tank wall of the inner tank body, and the horizontal section extends toward the central area of ​​the inner tank body. The tank cover body can be opened and closed by the automatic opening and closing mechanism for the cover body and is closed at the top opening of the outer tank body.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, both the vertical and horizontal sections have hollow cavities and are interconnected. The upper end of the vertical section is provided with a through hole for the cooling water inlet pipe and the cooling water outlet pipe to extend into the hollow cavity.

[0008] Furthermore, the stirring blade also includes a blade baffle fixed to one end of the horizontal section, and the angle between the blade baffle and the horizontal section is an obtuse angle.

[0009] Furthermore, the blade baffle is arranged radially along the inner barrel.

[0010] Furthermore, there are two stirring blades arranged radially and centrally symmetrically on both sides of the inner barrel, and the two blade baffles are in the same plane and are fixedly connected by a connecting piece with a waist-shaped fixing hole.

[0011] Furthermore, a horizontally mounted mounting plate is fixed to the upper end of the vertical section, and a ball screw jack is provided on the outer support frame. The ball screw jack includes a screw, a gearbox, and a worm. The middle part of the worm is located inside the gearbox and is connected to the screw via a gear. Both ends of the worm extend outside the gearbox. One end is connected to a handwheel, and the other end is adapted to connect to the output end of a motor or electric drill. The upper end of the screw is fixedly connected to a horizontally mounted connecting plate, and the mounting plate is fixedly connected to the connecting plate.

[0012] Furthermore, a temperature sensor is fixed on the connecting plate, and the temperature measuring end of the temperature sensor extends downward into the slurry in the inner barrel.

[0013] Furthermore, the automatic opening and closing mechanism of the lid includes a gantry located on one side of the outer barrel. The gantry includes a horizontally arranged top beam and vertically arranged door frames fixed on both sides of the top beam. An open position sensor is fixed on the top of the top beam, and a closed position sensor is fixed on the side of the top beam facing away from the outer barrel. The upper part of the two door frames is horizontally arranged with a rotating shaft parallel to the top beam on the side near the outer barrel. The barrel lid body is connected to the rotating shaft through a connecting part. The center of the upper surface of the barrel lid body is connected to the middle of the top beam through a cylinder. When the cylinder extends or retracts, it can drive the barrel lid body to rotate around the central axis of the rotating shaft, and trigger the open position sensor and the closed position sensor respectively at the opening limit position and the closing limit position of the rotation stroke.

[0014] Furthermore, the connecting part includes a connecting rod, a fixing clamp, and an extension plate. The connecting rods are arranged in parallel at intervals. One end of the connecting rod is fixedly connected to the barrel lid body, and the other end is fixedly connected to the extension plate. The middle part of the connecting rod is fixedly connected to the rotating shaft through the fixing clamp. The telescopic end of the cylinder is hinged to the center of the upper surface of the barrel lid body through a first hinge support. The tail of the cylinder body is hinged to the top center of the top beam through a second hinge support.

[0015] Furthermore, the outer support frame includes a base plate and a vertical support plate. The vertical support plate is fixed to the base plate, and the base plate is fixed to the base. The base is also provided with a ladder on the side near the outer barrel to facilitate workers to step on and climb.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The L-shaped stirring mechanism of the investment casting slurry bucket provided by this utility model has inclined surfaces on both the vertical and horizontal sections for cutting and dispersing the slurry. It has low resistance during stirring and good dispersion effect on the slurry, resulting in high stirring efficiency. The bucket lid is automatically flipped open or closed by an automatic lid opening and closing mechanism, which is simple in structure and easy to operate.

[0018] The mixing mechanism can also be adjusted in height by a ball screw jack on the outer support frame, which can adapt to mixing slurry at different depths and has good applicability. When there are two mixing mechanisms arranged radially and symmetrically, the two mixing mechanisms are fixed by a connecting piece that connects the two blade baffles. On the one hand, the distance between the vertical section and the inner wall of the inner tank can be finely adjusted, and the pulling action of the connecting piece makes it difficult for the vertical section to deform towards the inner wall of the inner tank. Therefore, it can effectively avoid the vertical section scratching the inner tank wall. On the other hand, the setting of the dual mixing mechanism also makes the mixing efficiency higher. In particular, after the blade baffles and connecting pieces are connected, they pass through the center of the inner tank, which can more effectively prevent the slurry from settling in the center of the tank. Attached Figure Description

[0019] Figure 1 An isometric view of a slurry bucket for investment casting provided by this utility model;

[0020] Figure 2 for Figure 1 Enlarged view of the structure enclosed by the dashed circle;

[0021] Figure 3 for Figure 1 The front view of the slurry tank used for investment casting is shown.

[0022] Figure 4 for Figure 1 The top view of the slurry tank used for investment casting is shown.

[0023] Figure 5 for Figure 1 The isometric view of the lid body and connecting part of the slurry bucket for investment casting shown.

[0024] Figure 6 for Figure 1 The axonometric view of the stirring mechanism and external support frame of the slurry tank for investment casting is shown.

[0025] Figure 7for Figure 1 The isometric view of the stirring mechanism of the slurry tank for investment casting shown.

[0026] Figure 8 for Figure 7 Top view of the stirring mechanism shown;

[0027] Figure 9 for Figure 7 Another isometric view of the stirring mechanism shown;

[0028] Figure 10 for Figure 1 The isometric view of the outer support frame of the slurry tank for investment casting shown.

[0029] Figure 11 for Figure 1 The isometric view of the stirring mechanism and outer support frame arranged radially and centrally symmetrically in the slurry tank for investment casting.

[0030] Figure 12 for Figure 11 The front view of the structure shown;

[0031] Figure 13 for Figure 11 Top view of the structure shown.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Paddle tank body; 2. Tank lid body; 3. Base; 4. External support frame; 5. Agitator blades; 6. Vertical section; 7. Horizontal section; 8. Sloping surface; 9. Cooling water inlet pipe; 10. Cooling water outlet pipe; 11. Blade baffle; 12. Waist-shaped fixing hole; 13. Connecting piece; 14. Mounting plate; 15. Lead screw; 16. Gearbox; 17. Worm gear; 18. Connecting plate; 19. Temperature sensor; 20. Top beam; 21. Door frame; 22. Open position sensor; 23. Close position sensor; 24. Rotating shaft; 25. Cylinder; 26. First hinge support; 27. Second hinge support; 28. Connecting rod; 29. ​​Fixing clamp; 30. Extension plate. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" are used to indicate the orientation or positional relationship, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] like Figures 1 to 13 As shown, this utility model provides a slurry tank for investment casting, which includes a tank body 1, a lid body 2, a stirring mechanism, and an automatic lid opening and closing mechanism. The tank body 1 includes an outer tank body fixed on a base 3 and an inner tank body disposed inside the outer tank body. The inner tank body is driven to rotate around its own central axis by a motor drive mechanism disposed on the base 3. The stirring mechanism includes an outer support frame 4 and an L-shaped stirring blade 5. The outer support frame 4 is located on one side outside the outer tank body and its bottom is fixedly connected to the base 3. Next, the stirring blade 5 includes a vertical section 6 and a horizontal section 7 located at the lower end of the vertical section 6. Both the vertical section 6 and the horizontal section 7 are provided with a sloping surface 8 on the side facing the slurry, which cuts through the tip of the slope to disperse the slurry. The upper end of the vertical section 6 is connected to the upper end of the outer support frame 4. The vertical section 6 is set close to the inner wall of the inner barrel, and the horizontal section 7 extends towards the center area of ​​the inner barrel. The barrel cover body 2 can be opened and closed by the automatic opening and closing mechanism of the cover to cover the top opening of the outer barrel.

[0037] It should be noted that the motor drive mechanism includes a motor, a drive pulley, a belt, and a driven pulley, etc., and its specific structure and arrangement are well known to those skilled in the art, so they will not be described in detail here. Both the vertical and horizontal sections have sloping surfaces on the side facing the slurry. During stirring and water cutting, this reduces resistance and more effectively disperses the fluid, thus improving stirring efficiency.

[0038] In one embodiment of the present invention, the vertical section 6 and the horizontal section 7 both have hollow cavities and are connected to each other. The upper end of the vertical section 6 is provided with a through hole for the cooling water inlet pipe 9 and the cooling water outlet pipe to extend into the hollow cavity.

[0039] It should be noted that the vertical and horizontal sections have interconnected hollow cavities, allowing the coolant to fill both sections and enhancing the cooling effect on the slurry. The coolant inlet pipe extends into the hollow cavity and then reaches the end of the horizontal section near the center of the slurry tank. The coolant outlet pipe extends into the hollow cavity and is located at the top of the vertical section. The deep penetration of the coolant inlet pipe into the horizontal section ensures that the coolant can smoothly enter the hollow cavity of the horizontal section first, and then flow from bottom to top into the hollow cavity of the vertical section, ensuring a better cooling effect.

[0040] In one embodiment of the present invention, the stirring blade 5 further includes a blade baffle 11 fixed to one end of the horizontal section 7, and the included angle between the blade baffle 11 and the horizontal section 7 is an obtuse angle.

[0041] The obtuse angle mentioned here refers to, for example, Figure 13 As shown, the horizontal section is equivalent to a single line segment, and the blade baffle is equivalent to another line segment. The two are in the shape of a broken line, and the angle between them at the connection point is an obtuse angle, with the obtuse angle opening towards the side facing the propeller.

[0042] In one embodiment of the present invention, the paddle baffle 11 is arranged radially along the inner barrel.

[0043] In one embodiment of this utility model, there are two stirring blades 5 arranged radially and centrally symmetrically on both sides of the inner barrel, and the two blade baffles 11 are in the same plane and are fixedly connected by a connecting piece 13 with a waist-shaped fixing hole 12.

[0044] It should be noted that the advantage of setting the waist-shaped fixing hole is that when the barrel wall is not round enough or there is a certain eccentricity when rotating, the vertical section of the two mixing blades can be adjusted to move closer to the center of the barrel (or away from the barrel wall) through the waist-shaped fixing hole, thereby ensuring that the vertical section of the blades does not easily scrape the barrel wall.

[0045] In one embodiment of this utility model, a horizontally arranged mounting plate 14 is fixed to the upper end of the vertical section 6, and a ball screw jack is provided on the outer support frame 4. The ball screw jack includes a lead screw 15, a gearbox 16, and a worm gear 17. The middle part of the worm gear 17 is located inside the gearbox 16 and is connected to the lead screw 15 through a gear. Both ends of the worm gear 17 extend outside the gearbox 16. One end is connected to a handwheel, and the other end is adapted to be connected to the output end of a motor or electric drill. The upper end of the lead screw 15 is fixedly connected to a horizontally arranged connecting plate 18, and the mounting plate 14 is fixedly connected to the connecting plate 18.

[0046] It should be noted that the lifting adjustment can be made manually by turning the handwheel connected to one end of the worm gear or by connecting one end of the worm gear with an electric drill.

[0047] In one embodiment of this utility model, a temperature sensor 19 is fixed on the connecting plate 18, and the temperature measuring end of the temperature sensor 19 extends downward into the slurry of the inner barrel.

[0048] In one embodiment of this utility model, the automatic opening and closing mechanism of the lid includes a gantry located on one side of the outer barrel. The gantry includes a horizontally arranged top beam 20 and vertically arranged door frames 21 fixed on both sides of the top beam 20. An open position sensor 22 is fixed to the top of the top beam 20, and a closed position sensor 23 is fixed to the side of the top beam 20 facing away from the outer barrel. The upper part of the two door frames 21 is horizontally arranged with a rotating shaft 24 parallel to the top beam 20 on the side near the outer barrel. The barrel lid body 2 is connected to the rotating shaft 24 through a connecting part. The center of the upper surface of the barrel lid body 2 is connected to the middle of the top beam 20 through a cylinder 25. When the cylinder 25 extends and retracts, it can drive the barrel lid body 2 to rotate around the central axis of the rotating shaft 24, and trigger the open position sensor 22 and the closed position sensor 23 respectively at the opening limit position and the closing limit position of the rotation stroke.

[0049] It should be noted that a fixed gantry is installed on one side of the pulp tank, and the gantry is equipped with open and closed position sensors, a cylinder, a connecting part, and a rotating shaft. This enables the tank lid to automatically close or open under the drive of the cylinder, resulting in a high degree of automation, reduced labor intensity, and greatly facilitating the opening and closing of the pulp tank lid. The overall structural design is reasonable, the investment cost is low, the operation is convenient, and the safety is good.

[0050] In one embodiment of this utility model, the connecting part includes a connecting rod 28, a fixing clamp 29, and an extension plate 30. The connecting rods 28 are arranged in parallel at intervals. One end of the connecting rod 28 is fixedly connected to the bucket lid body 2, and the other end is fixedly connected to the extension plate 30. The middle part of the connecting rod 28 is fixedly connected to the rotating shaft 24 through the fixing clamp 29. The telescopic end of the cylinder 25 is hinged to the center of the upper surface of the bucket lid body 2 through the first hinge support 26. The tail of the cylinder body of the cylinder 25 is hinged to the top center of the top beam 20 through the second hinge support 27.

[0051] Understandably, if necessary, the two ends of the cylinder connecting the lid body and the top beam can be interchanged; for example, the lid body can be hinged to the rear of the cylinder body. Alternatively, if necessary, the cylinder can be replaced with other common telescopic mechanisms, such as an electric telescopic rod.

[0052] In one embodiment of this utility model, the outer support frame 4 includes a base plate and a vertical support plate. The vertical support plate is fixed to the base plate, and the base plate is fixed to the base 3. The base 3 is also provided with a ladder on the side near the outer barrel to facilitate workers to step on and climb.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slush ladle for investment casting, characterized by, The pulp bucket body (1) includes a fixed base (3) and an inner barrel body arranged inside the outer barrel body, the inner barrel body is driven to rotate around its central axis by a motor drive mechanism arranged on the base (3), the stirring mechanism includes an outer support frame (4) and an L-shaped stirring paddle (5), the outer support frame (4) is located on one side of the outer barrel body and is fixedly connected with the base (3) at the bottom, the stirring paddle (5) includes a vertical section (6) and a horizontal section (7) located at the lower end of the vertical section (6), the vertical section (6) and the horizontal section (7) are provided with inclined surfaces (8) for cutting water and dispersing pulp on the pulp meeting side, the upper end of the vertical section (6) is connected with the upper end of the outer support frame (4), the vertical section (6) is arranged close to the inner barrel wall of the inner barrel body and the horizontal section (7) extends to the central area of the inner barrel body, and the barrel cover body (2) is opened and closed on the top opening of the outer barrel body by the cover automatic opening and closing mechanism.

2. A slush ladle for investment casting according to claim 1, wherein The vertical section (6) and the horizontal section (7) have a hollow cavity and are connected with each other, and the upper end of the vertical section (6) is provided with a through hole for the cooling water inlet pipe (9) and the cooling water outlet pipe to extend into the hollow cavity.

3. A ladle for investment casting according to claim 1, wherein The stirring paddle (5) further includes a paddle baffle (11) fixed to one end of the horizontal section (7), and the included angle between the paddle baffle (11) and the horizontal section (7) is obtuse.

4. A ladle for investment casting according to claim 3, wherein The paddle baffle (11) is arranged along the radial direction of the inner barrel body.

5. A ladle for investment casting according to claim 3, wherein The stirring paddle (5) has two and is radially and centrally symmetrically arranged on both side edges of the inner barrel body, and the two paddle baffles (11) are in the same plane and are fixedly connected by a connecting plate (13) with a waist-shaped fixing hole (12).

6. A ladle for investment casting according to claim 1, wherein The vertical section (6) is fixed with a horizontally arranged mounting plate (14) at the upper end, the outer support frame (4) is provided with a ball screw elevator, the ball screw elevator includes a screw rod (15), a gear box (16) and a worm (17), the middle part of the worm (17) is located in the gear box (16) and is in transmission connection with the screw rod (15) through a gear, the two ends of the worm (17) extend out of the gear box (16), one end is connected with a hand wheel, and the other end is adaptively connected with the output end of an electric motor or a hand drill, the upper end of the screw rod (15) is fixedly connected with a horizontally arranged connecting plate (18), and the mounting plate (14) is fixedly connected with the connecting plate (18).

7. A ladle for investment casting according to claim 6, wherein The connecting plate (18) is fixed with a temperature sensor (19), and the temperature measuring end of the temperature sensor (19) extends into the pulp liquid in the inner barrel body.

8. A ladle for investment casting according to claim 1, wherein The automatic opening and closing mechanism of the cover comprises a door frame arranged on one side of the outer barrel body, the door frame comprises a top beam (20) arranged horizontally and door frames (21) arranged vertically and fixed on both sides of the top beam (20), an opening-to-position sensor (22) is fixed on the top of the top beam (20), a closing-to-position sensor (23) is fixed on the side of the top beam (20) facing away from the outer barrel body, and a rotating shaft (24) parallel to the top beam (20) is horizontally arranged on the upper part of the two door frames (21) near the side of the outer barrel body, the barrel cover body (2) is connected with the rotating shaft (24) through a connecting part, the upper surface center of the barrel cover body (2) is connected with the middle part of the top beam (20) through a gas cylinder (25), and when the gas cylinder (25) is stretched and contracted, the barrel cover body (2) can be driven to overturn around the central axis of the rotating shaft (24) and trigger the opening-to-position sensor (22) and the closing-to-position sensor (23) at the opening limit position and the closing limit position of the overturning stroke.

9. A ladle for investment casting according to claim 8, wherein The connecting part comprises a connecting rod (28), a fixed clamp (29) and an extension plate (30), the connecting rods (28) are arranged in parallel and at intervals, one end of the connecting rod (28) is fixedly connected with the barrel cover body (2), the other end is fixedly connected with the extension plate (30), the middle part of the connecting rod (28) is fixedly connected with the rotating shaft (24) through the fixed clamp (29), the stretching and contracting end of the gas cylinder (25) is hinged to the center of the upper surface of the barrel cover body (2) through a first hinge support (26), and the tail part of the cylinder body of the gas cylinder (25) is hinged to the center of the top of the top beam (20) through a second hinge support (27).

10. A ladle for investment casting according to any one of claims 1 to 9, characterised in that The outer support frame (4) comprises a bottom plate and a vertical support plate, the vertical support plate is fixed on the bottom plate, the bottom plate is fixed on the base (3), and the base (3) is also provided with a step ladder for workers to step and climb near the side of the outer barrel body.

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