Aircraft engine blade casting ceramic shell film sand mixing device

Abstract

The utility model relates to casting equipment technical field discloses a kind of ceramic shell membrane sand mixing devices for aero-engine blade casting, including mixing main body and discharge assembly, and the mixing main body is limited to mixed cavity in, lower portion is communicated with discharge pipeline, and discharge assembly includes material collecting bin, sealing cover, electric push rod, push table and rotating stand etc., material collecting bin is located below discharge pipeline, push table is slidably connected on the side rail of material collecting bin outer side wall, rotating stand is rotatably connected to push table and is fixed with sealing cover, electric push rod drives push table sliding and links rotating stand and rotates between side table, the opening and closing of sealing cover is realized.The utility model is matched with helical blade through horizontal mixing, solves the problem of uneven mixing, realizes the automatic opening and closing and sealing of discharge port through automatic sealing discharge structure, effectively prevents impurity pollution, and guarantees the purity and uniformity of aviation grade casting material.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a ceramic shell sand mixing device for casting aero-engine blades. Background Technology

[0002] As a core component of aero-engines, the manufacturing process of aero-engine blades requires extremely high precision and typically employs investment casting technology. During the casting process, the quality of the ceramic shell directly determines the dimensional accuracy and surface quality of the blade, while the uniformity and purity of the ceramic shell sand are key factors in preparing high-quality ceramic shells.

[0003] Currently, vertical mixers are commonly used for mixing raw materials in the preparation of ceramic shell sand. However, with the increasing demands on blade performance in the aerospace industry, traditional vertical mixing equipment has gradually revealed its shortcomings. First, due to gravity, materials tend to accumulate at the bottom of the vertical container, leading to uneven mixing between the bottom and upper layers. Furthermore, a single mixing method is insufficient to generate enough shear force to break up micro-agglomerates, affecting the consistency of the shell film. Second, existing mixing devices have relatively simple designs at the discharge stage, often lacking effective sealing and protection measures. The discharge port is easily invaded by dust and moisture in the environment when not in operation, or the material is directly exposed to the air during the discharge process, which can easily cause raw material contamination and fail to meet the stringent standards for material purity required for aerospace-grade casting.

[0004] Therefore, this utility model proposes a ceramic shell sand mixing device for casting aero-engine blades to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ceramic shell sand mixing device for casting aero-engine blades, which aims to improve the problems of poor mixing uniformity, easy material accumulation, and low material purity caused by lack of sealing protection during the discharge process in the existing ceramic shell sand mixing equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a ceramic shell sand mixing device for casting aero-engine blades, comprising a mixing body, wherein a mixing cavity is defined inside the mixing body, and a discharge pipe and a discharge component are connected to the lower part of the mixing body;

[0007] The discharge assembly has a linkage mechanical structure that enables automatic opening and closing of the discharge port and sealing protection.

[0008] Furthermore, the collection bin, the sealing cover, the electric push rod, the controller, the push platform, the side rail, the side platform, and the rotating frame are combined through a specific mechanical linkage. Specifically, the collection bin is located below the discharge port of the discharge pipe, the side rail is fixedly connected to the outer wall of the collection bin, and the push platform is slidably connected to the side rail; the rotating frame is rotatably connected to the push platform, the sealing cover is fixedly connected to the rotating frame and initially covers the discharge port of the discharge pipe, the output end of the electric push rod is drivenly connected to the push platform, and the controller is electrically connected to the electric push rod to control the electric push rod to drive the push platform to slide along the side rail and to link the rotating frame to rotate between the side platforms, thereby causing the sealing cover to move away from the discharge port;

[0009] Preferably, the mixture further includes a mixing assembly comprising a motor, an output rod, and mixing blades. The output rod rotatably extends through the mixing chamber, and the mixing blades are fixedly connected to the portion of the output rod located within the mixing chamber. The motor is fixed to the outside of the mixing body and drives the output rod to rotate. With this configuration, the motor provides the power source to drive the output rod and mixing blades to rotate within the mixing chamber, thereby achieving material mixing.

[0010] Preferably, the hybrid assembly further includes a driving gear and a driven gear. The driving gear is connected to the output end of the motor, and the driven gear is fixedly connected to one end of the output rod. The driving gear and the driven gear are meshed together. This configuration uses gear meshing transmission instead of traditional belt transmission, ensuring the stability and accuracy of power transmission and avoiding slippage.

[0011] Preferably, the mixing blades have a helical structure. With this configuration, the helical mixing blades generate axial thrust and radial shear force during rotation, forcing the material to undergo multi-dimensional composite motion, thereby significantly improving mixing efficiency and uniformity.

[0012] Preferably, the mixing body further includes a support frame, which is fixedly connected to the bottom of the mixing body. This arrangement provides a stable support foundation for the mixing body, ensuring the structural stability of the device during operation.

[0013] Preferably, the support frame is equipped with driving wheels at its bottom end. This configuration gives the device the ability to move as a whole, facilitating flexible adjustment of the equipment position or maintenance according to production needs.

[0014] Preferably, the side platforms are distributed circumferentially along the side wall of the collection bin. This arrangement provides a continuous and stable guide trajectory for the rotation of the rotating frame, ensuring smooth opening and closing of the sealing cover.

[0015] Preferably, the electric push rod housing is fixed to the outside of the collection bin by a hinge. This arrangement accommodates slight angular changes that may occur during the linear movement of the push table, avoids jamming or mechanical damage caused by rigid connections, and extends the service life of the equipment.

[0016] Preferably, the mixing chamber is a horizontal structure. This design allows the material to naturally spread out at the bottom of the chamber under gravity. Combined with the rotating blades, it avoids the dead corners at the bottom that are common in vertical structures, making it easier to achieve highly uniform mixing.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problems of material accumulation at the bottom, numerous mixing dead zones, and uneven mixing caused by local agglomeration in existing vertical mixing equipment by setting up a horizontal mixing chamber in combination with a spiral mixing blade. It achieves the technical effect of using gravity to distribute materials naturally and generating axial pushing and radial shearing forces through the spiral blade to achieve all-round and highly uniform mixing of ceramic shell sand, thus meeting the stringent requirements for material consistency in aero-engine blade casting.

[0019] 2. This utility model solves the problems of poor sealing of the discharge port and easy contamination by external dust and impurities in the discharge process by setting up an automated discharge component including an electric push rod, a push table, a rotating frame and a sealing cover. It achieves the technical effect of automatic opening and closing of the discharge port and sealed conveying throughout the process, effectively preventing impurities from mixing in, ensuring the purity of ceramic shell sand and improving the casting yield.

[0020] 3. This utility model solves the problems of slippage and unstable speed of traditional belt drives by using gear meshing transmission to drive the mixing blades, achieving the technical effect of large transmission torque and constant and controllable speed, and further ensuring the consistency and stability of the mixing quality of different batches of materials. Attached Figure Description

[0021] Figure 1 This is a perspective view of a ceramic shell sand mixing device for casting aero-engine blades according to the present invention.

[0022] Figure 2 This is a schematic diagram of the mixing body of a ceramic shell sand mixing device for casting aero-engine blades proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the mixing component of a ceramic shell film sand mixing device for casting aero-engine blades proposed in this utility model;

[0024] Figure 4This is a schematic diagram of the discharge component of a ceramic shell sand mixing device for casting aero-engine blades proposed in this utility model.

[0025] Legend:

[0026] 1. Mixing body; 101. Support frame; 102. Drive wheel; 103. Mixing chamber; 2. Mixing component; 201. Motor; 202. Drive gear; 203. Driven gear; 204. Output rod; 205. Mixing blade; 3. Discharge component; 301. Discharge pipe; 302. Collection bin; 303. Sealing cover; 304. Electric push rod; 305. Controller; 306. Pushing table; 307. Side rail; 308. Side platform; 309. Turning frame. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-4 The present invention provides an embodiment of a ceramic shell sand mixing device for casting aero-engine blades, comprising a mixing body 1, which serves as the carrier and mixing container for the entire device, and defines a mixing chamber 103 inside the mixing body 103. The mixing chamber 103 is a horizontal structure and is used to contain the ceramic shell sand raw material to be mixed. The lower part of the mixing body 1 is connected to a discharge pipe 301 for discharging the mixed material. A support frame 101 is fixedly connected to the bottom of the mixing body 1, which provides stable support for the entire device. A moving wheel 102 is installed at the bottom of the support frame 101, which is used to facilitate the movement of the device to a designated working position.

[0029] Specifically, the device includes a discharge assembly 3, which is used to achieve precise discharge and sealing protection of the mixed materials, ensuring the purity of the materials and the convenience of operation. The discharge assembly 3 includes a collection bin 302, a sealing cover 303, an electric push rod 304, a controller 305, a push table 306, a side rail 307, a side platform 308, and a rotating frame 309.

[0030] The collection bin 302 is located below the discharge port of the discharge pipe 301 and is used to collect the mixed ceramic shell sand conveyed from the discharge pipe 301. The side rail 307 is fixedly connected to the outer wall of the collection bin 302 and provides sliding guidance for the push table 306. The push table 306 is installed on the side rail 307 by sliding connection, so that the push table 306 can reciprocate along the length of the side rail 307.

[0031] The rotating frame 309 is rotatably connected to the push table 306, and the sealing cover 303 is fixedly connected to the rotating frame 309. In the initial or non-working state of the device, the sealing cover 303 is used to cover the discharge port of the discharge pipe 301 to achieve sealing protection and prevent external dust and impurities from entering. The side platform 308 is distributed circumferentially along the side wall of the collection bin 302 and is used to cooperate with and guide the rotating frame 309 to rotate under the drive of the push table 306.

[0032] The output end of the electric push rod 304 is connected to the push table 306 for transmission. The housing of the electric push rod 304 is fixed to the outside of the collection bin 302 by a hinge. The controller 305 is electrically connected to the electric push rod 304. The controller 305 is used to issue commands to control the electric push rod 304 to move, thereby driving the push table 306 to slide along the side rail 307 and linking the rotating frame 309 to rotate between the side platforms 308, so as to achieve the precise disengagement or closing of the sealing cover 303 from the discharge port of the discharge pipe 301.

[0033] The mixing component 2 includes a motor 201, a drive gear 202, a driven gear 203, an output rod 204, and a mixing blade 205. The motor 201 is fixed to the outside of the mixing body 1 as a power source, and its output end is connected to the drive gear 202.

[0034] The output rod 204 rotatably passes through the mixing chamber 103. The driven gear 203 is fixedly connected to one end of the output rod 204. The driving gear 202 meshes with the driven gear 203. Through this gear transmission structure, the motor 201 can drive the output rod 204 to rotate stably.

[0035] The mixing blade 205 is fixedly connected to the part of the output rod 204 located inside the mixing chamber 103. The mixing blade 205 has a spiral structure. When the mixing blade 205 rotates at high speed with the output rod 204, its spiral structure can generate strong axial pushing and radial shearing forces on the material in the mixing chamber 103, enhancing the material's tumbling and convection effect.

[0036] The combination of this horizontal mixing chamber 103 and the spiral mixing blades 205 allows the material to be evenly distributed under gravity while being stirred and sheared in all directions without dead angles, thus effectively solving the problems of material accumulation, local clumping and uneven mixing caused by traditional vertical mixing.

[0037] In a preferred embodiment, in order to provide stable support for the entire device, a support frame 101 is fixedly connected to the bottom of the mixing body 1. The support frame 101 can ensure that the device remains stable when mixing materials and avoid the mixing effect being affected by vibration.

[0038] As a further optimization of the above solution, in order to facilitate the movement and rearrangement of the device in the production workshop, the bottom end of the support frame 101 is equipped with driving wheels 102. Through these driving wheels 102, the entire device can be easily pushed to the designated working position or for maintenance.

[0039] As a preferred embodiment of the discharge assembly 3, in order to provide a clear rotation path and support for the rotating frame 309, the side platforms 308 are distributed circumferentially along the side wall of the collection bin 302. Under the drive of the pusher 306, the edge part of the rotating frame 309 can rotate smoothly between these side platforms 308.

[0040] As another preferred embodiment of the drive part of the discharge assembly 3, in order to ensure that the electric push rod 304 can efficiently transmit thrust, the housing of the electric push rod 304 is fixed to the outside of the collection bin 302 by a hinge. This connection method allows the electric push rod 304 to swing within a small range during operation to adapt to the angle change of the push table 306 during linear motion, ensuring smooth thrust transmission.

[0041] Working principle: Before the operation begins, the mixing body 1 is moved to the designated position by the moving wheel 102. The support frame 101 provides stable support for the device. The ceramic shell sand raw material to be mixed is loaded into the mixing chamber 103. The motor 201 in the mixing component 2 is started. The output end of the motor 201 drives the driving gear 202 to rotate. The driving gear 202 meshes with the driven gear 203 to drive the output rod 204 to rotate synchronously. The output rod 204 drives the mixing blades 205 fixed on the outer wall to rotate at high speed, which stirs the raw material in the mixing chamber 103 in all directions. Since the mixing chamber 103 adopts a horizontal structure, the material can be evenly distributed in the chamber under the action of gravity. With the axial pushing and radial shearing force generated by the spiral structure of the mixing blades 205, local agglomeration is effectively eliminated, and efficient and uniform mixing of materials is achieved.

[0042] After mixing, the controller 305 sends a command to start the electric push rod 304 in the discharge assembly 3. The electric push rod 304 pushes the push table 306 to slide along the side rail 307. During the movement, the push table 306 rotates in conjunction with the rotating frame 309. The rotating frame 309 rotates between the side platforms 308 distributed on the side wall of the collection bin 302, causing the sealing cover 303 fixed on the rotating frame 309 to disengage from the discharge port of the discharge pipe 301. The mixed ceramic shell sand is accurately transported to the collection bin 302 through the discharge pipe 301 for collection, meeting the quantitative requirements of subsequent casting materials.

[0043] After the material is discharged, the controller 305 controls the electric push rod 304 to reset, drives the push table 306 to slide in the opposite direction and drives the rotating frame 309 to rotate in the opposite direction, so that the sealing cover 303 covers the discharge pipe 301 again, preventing external dust and impurities from entering the collection bin 302, thereby ensuring the purity of the material.

Claims

1. A ceramic shell sand mixing device for casting aero-engine blades, comprising: A mixing body (1) is provided, wherein a mixing cavity (103) is defined inside the mixing body (1), and a discharge pipe (301) is connected to the lower part of the mixing body (1); Its characteristic is that it further includes: The discharge assembly (3) includes a collection bin (302), a sealing cover (303), an electric push rod (304), a controller (305), a push table (306), a side rail (307), a side platform (308), and a rotating frame (309); The collection bin (302) is located below the discharge port of the discharge pipe (301), and the side rail (307) is fixedly connected to the outer side wall of the collection bin (302); The pusher (306) is slidably connected to the side rail (307); The rotating frame (309) is rotatably connected to the push table (306), and the sealing cover (303) is fixedly connected to the rotating frame (309) and covers the outlet of the discharge pipe (301) in the initial position; The output end of the electric push rod (304) is connected to the push table (306) for transmission. The controller (305) is electrically connected to the electric push rod (304) to control the electric push rod (304) to drive the push table (306) to slide along the side rail (307) and link the rotating frame (309) to rotate between the side platforms (308), thereby causing the sealing cover (303) to move away from the discharge port.

2. The ceramic shell sand mixing device for casting aero-engine blades according to claim 1, characterized in that: The device further includes a mixing component (2), which includes a motor (201), an output rod (204), and a mixing blade (205). The output rod (204) is rotatably inserted through the mixing chamber (103). The mixing blade (205) is fixedly connected to the portion of the output rod (204) located inside the mixing chamber (103). The motor (201) is fixed to the outside of the mixing body (1) and is used to drive the output rod (204) to rotate.

3. The ceramic shell sand mixing device for casting aero-engine blades according to claim 2, characterized in that: The hybrid assembly (2) further includes a drive gear (202) and a driven gear (203). The drive gear (202) is connected to the output end of the motor (201) for transmission. The driven gear (203) is fixedly connected to one end of the output rod (204). The drive gear (202) and the driven gear (203) are meshed together.

4. The ceramic shell sand mixing device for casting aero-engine blades according to claim 2, characterized in that: The hybrid blade (205) has a spiral structure.

5. The ceramic shell sand mixing device for casting aero-engine blades according to claim 1, characterized in that: The mixing body (1) also includes a support frame (101), which is fixedly connected to the bottom of the mixing body (1).

6. The ceramic shell sand mixing device for casting aero-engine blades according to claim 5, characterized in that: The bottom end of the support frame (101) is equipped with a moving wheel (102).

7. The ceramic shell sand mixing device for casting aero-engine blades according to claim 1, characterized in that: The side platforms (308) are distributed circumferentially along the side wall of the collection bin (302).

8. The ceramic shell sand mixing device for casting aero-engine blades according to claim 1, characterized in that: The housing of the electric push rod (304) is fixed to the outside of the collection bin (302) by a hinge.

9. A ceramic shell sand mixing device for casting aero-engine blades according to claim 8, characterized in that: The mixing chamber (103) has a horizontal structure.

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