A preparation device for ceramic matrix composite parts

Abstract

The invention discloses a preparation device for a ceramic-based composite part, which relates to the technical field of ceramic-based composite slurry preparation, and comprises: a kettle body, wherein the upper and lower ends of the kettle body are respectively provided with a feed port and a discharge port; a stirring mechanism, wherein the stirring mechanism is installed at the middle position of the kettle body and is used for stirring and mixing raw materials; a shearing and refining mechanism, wherein the shearing and refining mechanism is installed inside the kettle body and is used for shearing and crushing the raw materials; a conveying mechanism, wherein the conveying mechanism is installed on the shearing and refining mechanism. The invention can realize extrusion filtration of raw materials and crushing elimination of lumps through the cooperation of the shearing and refining mechanism, the filtering and rolling mechanism and the pushing mechanism, thereby improving the mixing effect of the raw materials; and the filtering and rolling mechanism and the pushing mechanism can also push the raw materials on the upper and lower sides of the shearing and refining mechanism, thereby promoting the flow of viscous raw materials, assisting the conveying and shearing and refining treatment of the raw materials, thereby improving the efficiency of raw material mixing.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic-based composite slurry preparation, and in particular to a device for preparing a ceramic-based composite part. Background Art

[0002] Ceramic-based composites are a type of composite material that uses ceramic as a matrix and various fibers (such as carbon fibers, silicon carbide fibers, etc.). Ceramic-based composites have the advantages of high strength, high hardness, and wear resistance, and are widely used in the fields of machinery manufacturing, aerospace, energy and chemical engineering. When preparing ceramic-based composite parts, it is necessary to evenly mix the ceramic matrix raw materials, fiber raw materials, and auxiliary raw materials to prepare ceramic-based composite slurry.

[0003] In order to ensure the production quality of ceramic-based composite parts, the uniformity of the preparation of ceramic-based composite slurry is generally required to be high. The mixing device of ceramic-based composite slurry commonly used at present only performs simple stirring and mixing, and it is difficult for the fiber raw material to form a particle structure of uniform size, and the mixing effect of the ceramic-based composite slurry is poor. In addition, we found in the actual production process that after adding the fiber raw material to the viscous ceramic matrix raw material, the viscous ceramic matrix raw material wraps part of the fiber raw material and tends to clump and adhere to the inner wall of the kettle body. This part of the clumped raw material also needs to be manually processed and mixed later, which is very inconvenient to operate. Therefore, a preparation device for ceramic-based composite parts is needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a device for preparing a ceramic matrix composite component to solve the problems existing in the prior art mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A preparation device for a ceramic-based composite part, comprising:

[0007] A kettle body, wherein the upper and lower ends of the kettle body are respectively provided with a feed inlet and a discharge outlet;

[0008] A stirring mechanism, which is installed in the middle of the kettle body and is used to stir and mix the raw materials;

[0009] A shearing and thinning mechanism, which is installed inside the kettle body and is used to shear and crush the raw materials;

[0010] A conveying mechanism, wherein the conveying mechanism is installed on the shearing and thinning mechanism, and the conveying mechanism is used to convey the raw materials below the shearing and thinning mechanism to above the shearing and thinning mechanism;

[0011] A driving mechanism, which is installed above the conveying mechanism and is used to utilize the power of the stirring mechanism to drive the shearing and thinning mechanism and the conveying mechanism to operate;

[0012] A filtering and rolling mechanism, which is installed below the shearing and thinning mechanism and is used to squeeze and filter the raw materials and to roll and de-agglomerate the agglomerated raw materials;

[0013] The pushing mechanism is installed above the shearing and thinning mechanism, and is used to press down the raw materials output by the conveying mechanism.

[0014] Preferably, the stirring mechanism includes a motor bracket, a drive shaft and a stirring blade, the motor bracket is installed on the upper end surface of the kettle body, the drive shaft is rotatably connected to the motor bracket and extends to the interior of the kettle body, the drive shaft is provided with a stirring blade, and the motor bracket is installed with a drive motor for driving the drive shaft to rotate.

[0015] Preferably, the shear thinning mechanism includes a lower shear plate and an upper shear plate, the lower shear plate is a circular structure and is welded to the inner wall of the kettle body, a protrusion is provided in the middle of the lower shear plate, and the upper shear plate is horizontally slidably connected to the protrusion of the lower shear plate, and the lower shear plate and the upper shear plate are both provided with a plurality of shear grooves that can be aligned with each other.

[0016] Preferably, the conveying mechanism includes a conveying pipe, a discharge box and a conveying auger, the conveying pipe is vertically installed in the through hole on the lower shear plate, the discharge box is connected to the upper end of the conveying pipe, and a conveying auger is provided in the conveying pipe.

[0017] Preferably, the driving mechanism includes a driving box, a transmission belt and a gear, the driving box is installed at the upper end of the conveying mechanism, the driving shaft and the conveying auger are connected by a transmission belt, the driving shaft is keyed with a gear, the driving box is rotatably connected with a toothed plate, the toothed plate is meshingly connected with the gear, the driving box is horizontally slidably connected with a driving slide, one end of the driving slide is connected to the upper shear plate, and the other end of the driving slide is installed with a straight groove ring, a driving column is installed at the eccentric position of the toothed plate, and the driving column is slidably connected in the straight groove ring.

[0018] Preferably, the filtering and rolling mechanism comprises a driving box, a sliding plate and a reset spring, a sliding groove is provided on the lower shear plate, the driving box is installed on the ground of the upper shear plate through the sliding groove, the sliding plate slides vertically in the driving box, and a reset spring is installed between the sliding plate and the ground in the driving box;

[0019] A drive frame is horizontally slidably connected in the drive box, the drive frame is located above the sliding plate, a drive inclined groove is provided on the side of the drive box, a slider that slides in the drive inclined groove is provided on the side of the drive frame, and a filter pressure plate is connected to one end of the drive frame.

[0020] Preferably, the pushing mechanism includes a lower pressure plate and a connecting rod, the connecting rod is vertically slidably connected to the sliding hole on the upper end of the lower shear plate, the upper end of the connecting rod is connected to the lower pressure plate, the side of the driving frame is provided with a horizontal groove, the lower end of the connecting rod is connected to a connecting block sliding in the horizontal groove, and the lower pressure plate is an inclined semi-annular structure.

[0021] Preferably, the filter pressure plate is an arc-shaped flexible plate structure, filter holes are evenly arranged on the filter pressure plate, and an inclined burr is provided at the lower end of the filter pressure plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can achieve stirring, mixing and repeated shearing and refining treatment of the raw materials of the ceramic-based composite parts through the coordinated arrangement of the stirring mechanism, the shearing and refining mechanism and the conveying mechanism, so that the fiber raw material particles are finer and more uniform, and the ceramic matrix raw material and the fiber raw material have a better homogenization effect.

[0024] 2. The present invention can achieve extrusion filtration of raw materials and crushing elimination of lumps through the cooperation of the shearing and refining mechanism, the filtering and rolling mechanism and the pushing mechanism, thereby improving the mixing effect of the raw materials. The filtering and rolling mechanism and the pushing mechanism can also push the raw materials on the upper and lower sides of the shearing and refining mechanism, promote the flow of viscous raw materials, assist the transportation and shearing and refining processing of the raw materials, and improve the efficiency of raw material mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the top view of the three-dimensional structure inside the kettle body of the present invention.

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the kettle body of the present invention.

[0028] Figure 4 It is a schematic diagram of the shearing and thinning mechanism and the conveying mechanism of the present invention.

[0029] Figure 5 It is a schematic diagram of the internal structure of the driving mechanism of the present invention.

[0030] Figure 6 It is a schematic diagram of the driving structure of the toothed disc and the driving slide of the present invention.

[0031] Figure 7 This is a schematic diagram of the installation position of the drive box of the present invention.

[0032] Figure 8 It is a schematic diagram of the structure of the filtering and rolling mechanism of the present invention.

[0033] Fig. 9 It is a schematic diagram of the connection structure between the drive frame and the drive box of the present invention.

[0034] In the figure: 1. kettle body; 2. stirring mechanism; 21. motor bracket; 22. driving shaft; 23. stirring blade; 24. driving motor; 3. shearing and refining mechanism; 31. lower shear plate; 32. upper shear plate; 4. conveying mechanism; 41. conveying pipe; 42. discharging box; 43. conveying auger; 5. driving mechanism; 51. driving box; 52. driving belt; 53. gear; 54. toothed disc; 55. driving slide; 56. straight groove ring; 57. driving column; 6. filtering and crushing mechanism; 61. driving box; 62. sliding plate; 63. reset spring; 64. driving frame; 65. driving chute; 66. slider; 67. filter pressure plate; 7. pushing mechanism; 71. lower pressure plate; 72. connecting rod; 73. horizontal groove. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] See also Figure 1-9 , the present invention provides the following technical solutions:

[0037] A preparation device for a ceramic-based composite part comprises: a kettle body 1, wherein a feed port and a discharge port are respectively provided at the upper and lower ends of the kettle body 1; a stirring mechanism 2, wherein the stirring mechanism 2 is installed at the middle position of the kettle body 1 and is used to stir and mix raw materials; the stirring mechanism 2 comprises a motor bracket 21, a drive shaft 22 and a stirring blade 23, wherein the motor bracket 21 is installed at the upper end surface of the kettle body 1, the drive shaft 22 is rotatably connected to the motor bracket 21 and extends to the inside of the kettle body 1, the drive shaft 22 is provided with a stirring blade 23, and a drive motor 24 for driving the drive shaft 22 to rotate is installed on the motor bracket 21; the drive motor 24 drives the drive shaft 22 to rotate, so that the stirring blade 23 on the drive shaft 22 stirs and mixes the raw materials in the kettle body 1.

[0038] A shearing and thinning mechanism 3 is installed inside the kettle body 1 and is used to shear and crush the raw materials; the shearing and thinning mechanism 3 includes a lower shearing plate 31 and an upper shearing plate 32, the lower shearing plate 31 is a circular structure and is welded to the inner wall of the kettle body 1, a protrusion is provided in the middle of the lower shearing plate 31, and the upper shearing plate 32 is horizontally slidably connected to the protrusion of the lower shearing plate 31, and the lower shearing plate 31 and the upper shearing plate 32 are both provided with a plurality of shearing grooves that can be aligned with each other; the upper shearing plate 32 is arranged to fit the surface of the lower shearing plate 31, and the upper shearing plate 32 can slide back and forth on the surface of the lower shearing plate 31, so that the shearing grooves on the surfaces of the two are reciprocated and staggered, thereby realizing the shearing and thinning treatment of the fiber raw material, making the fiber raw material particles finer and more uniform.

[0039] A conveying mechanism 4 is installed on the shearing and thinning mechanism 3, and is used to convey the raw materials below the shearing and thinning mechanism 3 to the top of the shearing and thinning mechanism 3; the conveying mechanism 4 includes a conveying pipe 41, a discharge box 42 and a conveying auger 43, the conveying pipe 41 is vertically installed in the through hole on the lower shear plate 31, the discharge box 42 is connected to the upper end of the conveying pipe 41, and a conveying auger 43 is arranged in the conveying pipe 41; both ends of the discharge box 42 are provided with openings, which facilitates the uniform discharge of raw materials from both sides of the discharge box 42, and the raw materials are circulated and conveyed to the top of the shearing and thinning mechanism 3 through the conveying mechanism 4, which facilitates the shearing and thinning mechanism 3 to shear the fiber raw materials for multiple times, so that the fiber raw materials and the ceramic matrix raw materials are mixed more evenly.

[0040] The driving mechanism 5 is installed above the conveying mechanism 4. The driving mechanism 5 is used to use the power of the stirring mechanism 2 to drive the shearing and refining mechanism 3 and the conveying mechanism 4 to operate; the driving mechanism 5 includes a driving box 51, a transmission belt 52 and a gear 53. The driving box 51 is installed at the upper end of the conveying mechanism 4. The driving shaft 22 is connected to the conveying auger 43 through the transmission belt 52. The driving shaft 22 is keyed with a gear 53. The driving box 51 is rotatably connected with a toothed disc 54. The toothed disc 54 and the gear The wheel 53 is meshed and connected, and a driving slide 55 is horizontally slidably connected to the driving box 51. One end of the driving slide 55 is connected to the upper shear plate 32, and the other end of the driving slide 55 is installed with a straight groove ring 56. A driving column 57 is installed at the eccentric position of the toothed disk 54, and the driving column 57 is slidably connected in the straight groove ring 56. Through the setting of the driving mechanism 5, the shearing and thinning mechanism 3 and the conveying mechanism 4 can be driven by the power of the driving motor 24, without the need to install multiple power equipment, so that the device structure is more compact and more energy-saving.

[0041] The filtering and crushing mechanism 6 is installed below the shearing and refining mechanism 3, and is used for squeezing and filtering the raw materials, and for crushing and de-agglomerating the agglomerated raw materials; the filtering and crushing mechanism 6 includes a driving box 61, a sliding plate 62 and a reset spring 63, a sliding groove is provided on the lower shear plate 31, and the driving box 61 is installed on the ground of the upper shear plate 32 through the sliding groove, and the sliding plate 62 slides vertically in the driving box 61, and a reset spring 63 is installed between the sliding plate 62 and the ground inside the driving box 61.

[0042] A driving frame 64 is horizontally slidably connected inside the driving box 61, and the driving frame 64 is located above the sliding plate 62. A driving inclined groove 65 is provided on the side of the driving box 61, and a sliding block 66 that slides in the driving inclined groove 65 is provided on the side of the driving frame 64. A filter pressure plate 67 is connected to one end of the driving frame 64; during the reciprocating motion of the upper shear plate 32, the upper shear plate 32 synchronously drives the filtering and rolling mechanism 6 to move, so that the filter pressure plate 67 cooperates with the inner wall of the kettle body 1 to extrude, filter and roll the raw materials to remove lumps.

[0043] The filter plate 67 is an arc-shaped flexible plate structure, and filter holes are evenly arranged on the top of the filter plate 67. The lower end of the filter plate 67 is provided with an inclined burr. The filter plate 67 with an arc-shaped flexible plate structure can be completely attached to the inner wall after being contacted and extruded with the kettle body 1, thereby improving the effect of rolling and removing lumps. By setting the inclined burr at the lower end of the filter plate 67, when the filter plate 67 moves downward, it can push the raw material to the feed port of the conveying mechanism 4, thereby promoting the flow and conveying of viscous raw materials.

[0044] A pushing mechanism 7 is installed above the shearing and thinning mechanism 3, and is used to press down the raw materials output by the conveying mechanism 4; the pushing mechanism 7 includes a lower pressing plate 71 and a connecting rod 72, and the connecting rod 72 is vertically slidably connected to the sliding hole at the upper end of the lower shear plate 31, and the upper end of the connecting rod 72 is connected to the lower pressing plate 71, and the side of the driving frame 64 is provided with a horizontal groove 73, and the lower end of the connecting rod 72 is connected to a connecting block sliding in the horizontal groove 73, and the lower pressing plate 71 is an inclined semi-annular structure; the filter pressure plate 67 can drive the lower pressing plate 71 to move downward, and press down the raw materials at the discharge port of the conveying mechanism 4, so as to promote the flow of the raw materials and the shearing process of the shearing and thinning mechanism 3, and avoid the accumulation of raw materials.

[0045] The working process of the present invention is as follows:

[0046] Ceramic matrix raw materials, fiber raw materials and auxiliary raw materials are added into the kettle body 1 through the feed port at the upper end of the kettle body 1, and the drive motor 24 is started. The drive motor 24 drives the drive shaft 22 to rotate, and the drive shaft 22 drives the stirring blades 23 on its side to stir and mix the raw materials in the kettle body 1.

[0047] The driving shaft 22 drives the gear 53 to rotate, and the gear 53 drives the toothed disc 54 meshing with it to rotate. The toothed disc 54 drives the driving slide 55 to slide back and forth through the driving column 57 and the straight groove ring 56, so that the driving slide 55 drives the upper shear plate 32 to slide back and forth on the surface of the lower shear plate 31, and the shear grooves on the upper shear plate 32 and the lower shear plate 31 are reciprocated and staggered to achieve shearing and refining processing of the fiber raw material, so that the fiber raw material particles are finer and more uniform.

[0048] The driving shaft 22 drives the conveying auger 43 to rotate through the transmission belt 52 at the same time. The conveying auger 43 conveys the raw materials below the shearing and refining mechanism 3 to the top of the shearing and refining mechanism 3. The raw materials are sheared and refined again by the shearing and refining mechanism 3, so that the particles of the material are finer and more uniform.

[0049] During the reciprocating sliding of the upper shear plate 32, the upper shear plate 32 drives the driving box 61 to move synchronously. When the driving box 61 moves close to the inner wall of the kettle body 1, the driving box 61 drives the driving frame 64 and the filter pressure plate 67 to move. The filter pressure plate 67 cooperates with the inner wall of the kettle body 1 to squeeze the raw material, so that the raw material passes through the filter hole. The lumps that cannot pass through the filter hole and the lumps adhered to the inner wall of the kettle body 1 are located between the filter pressure plate 67 and the inner wall of the kettle body 1. The filter pressure plate 67 continues to move and fits the inner wall of the kettle body 1. The driving box 61 continues to move, so that the slider 66 slides in the driving chute 65, and the driving frame 64 drives the filter pressure plate 67 to move downward, so that the filter pressure plate 67 crushes and crushes the lumps on the inner wall of the kettle body 1, thereby achieving the purpose of eliminating the lumps; and the flash under the filter pressure plate 67 can push the raw material downward to the feed inlet of the conveying mechanism 4, thereby promoting the flow and conveying of the raw material.

[0050] During the downward movement of the filter plate 67, the driving frame 64 drives the lower pressure plate 71 to move downward through the connecting rod 72. The lower pressure plate 71 presses down the raw materials at the discharge port of the conveying mechanism 4, promotes the flow of the raw materials and the shearing treatment of the raw materials by the shearing and refining mechanism 3, avoids the accumulation of the raw materials, and improves the efficiency of raw material mixing.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing a ceramic matrix composite, characterized in that: include: A kettle body (1), wherein the upper and lower ends of the kettle body (1) are respectively provided with a feed inlet and a discharge outlet; A stirring mechanism (2), the stirring mechanism (2) is installed in the middle of the kettle body (1) and is used to stir and mix the raw materials; A shearing and thinning mechanism (3), the shearing and thinning mechanism (3) being installed inside the kettle body (1) and used for shearing and crushing the raw material; the shearing and thinning mechanism (3) comprises a lower shearing plate (31) and an upper shearing plate (32); the lower shearing plate (31) is of a circular structure and is welded to the inner wall of the kettle body (1); a protrusion is provided in the middle of the lower shearing plate (31); the upper shearing plate (32) is horizontally slidably connected to the protrusion of the lower shearing plate (31); and the lower shearing plate (31) and the upper shearing plate (32) are both provided with a plurality of shearing grooves that can be aligned with each other; A conveying mechanism (4), the conveying mechanism (4) being mounted on the shearing and thinning mechanism (3), the conveying mechanism (4) being used to convey the raw materials below the shearing and thinning mechanism (3) to above the shearing and thinning mechanism (3); A driving mechanism (5), the driving mechanism (5) being installed above the conveying mechanism (4), the driving mechanism (5) being used to utilize the power of the stirring mechanism (2) to drive the shearing and refining mechanism (3) and the conveying mechanism (4) to operate; a filtering and rolling mechanism (6), the filtering and rolling mechanism (6) being installed below the shearing and thinning mechanism (3), the filtering and rolling mechanism (6) being used for squeezing and filtering the raw materials, and for rolling and de-agglomerating the agglomerated raw materials; the filtering and rolling mechanism (6) comprising a driving box (61), a sliding plate (62) and a return spring (63), the lower shearing plate (31) being provided with a sliding groove, the driving box (61) passing through the sliding groove and being installed on the ground of the upper shearing plate (32), the sliding plate (62) sliding vertically in the driving box (61), and a return spring (63) being installed between the sliding plate (62) and the ground inside the driving box (61); A drive frame (64) is horizontally slidably connected inside the drive box (61), the drive frame (64) is located above the sliding plate (62), a drive inclined groove (65) is provided on the side of the drive box (61), a sliding block (66) is provided on the side of the drive frame (64) and slides in the drive inclined groove (65), and one end of the drive frame (64) is connected to a filter pressure plate (67); A pushing mechanism (7), wherein the pushing mechanism (7) is installed above the shearing and thinning mechanism (3), and is used to press down the raw materials output by the conveying mechanism (4); the pushing mechanism (7) comprises a lower pressing plate (71) and a connecting rod (72), wherein the connecting rod (72) is vertically slidably connected to the sliding hole at the upper end of the lower shearing plate (31), the upper end of the connecting rod (72) is connected to the lower pressing plate (71), a horizontal groove (73) is provided on the side of the driving frame (64), the lower end of the connecting rod (72) is connected to a connecting block that slides in the horizontal groove (73), and the lower pressing plate (71) is an inclined semi-annular structure.

2. The device for preparing a ceramic matrix composite according to claim 1, characterized in that: The stirring mechanism (2) comprises a motor support (21), a drive shaft (22) and a stirring blade (23); the motor support (21) is mounted on the upper end surface of the kettle body (1); the drive shaft (22) is rotatably connected to the motor support (21) and extends into the interior of the kettle body (1); the drive shaft (22) is provided with a stirring blade (23); and the motor support (21) is mounted with a drive motor (24) for driving the drive shaft (22) to rotate.

3. The device for preparing a ceramic matrix composite according to claim 2, characterized in that: The conveying mechanism (4) comprises a conveying pipe (41), a discharge box (42) and a conveying auger (43); the conveying pipe (41) is vertically installed in a through hole on the lower shear plate (31); the discharge box (42) is connected to the upper end of the conveying pipe (41); and the conveying auger (43) is arranged in the conveying pipe (41).

4. The device for preparing a ceramic matrix composite according to claim 3, characterized in that: The driving mechanism (5) comprises a driving box (51), a transmission belt (52) and a gear (53); the driving box (51) is mounted on the upper end of the conveying mechanism (4); the driving shaft (22) is connected to the conveying auger (43) by means of a transmission belt (52); a gear (53) is keyed on the driving shaft (22); a toothed disc (54) is rotatably connected to the driving box (51); the toothed disc (54) is meshingly connected to the gear (53); a driving carriage (55) is horizontally slidably connected to the driving box (51); one end of the driving carriage (55) is connected to the upper shear plate (32); a straight groove ring (56) is mounted on the other end of the driving carriage (55); a driving column (57) is mounted at an eccentric position of the toothed disc (54); the driving column (57) is slidably connected to the straight groove ring (56).

5. The device for preparing a ceramic matrix composite according to claim 1, characterized in that: The filter pressure plate (67) is an arc-shaped flexible plate-like structure, filter holes are evenly arranged on the filter pressure plate (67), and an inclined burr is arranged at the lower end of the filter pressure plate (67).

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