An apparatus for preparing a composite tricalcium / tetracalcium phosphate

Abstract

This utility model relates to a preparation device for compound tricalcium / tetracalcium phosphate, including a mixing preparation device, a feeding structure and a premixing component disposed inside the mixing preparation device; the premixing component includes a premixing disc disposed inside the mixing preparation device, a rotating shaft rotatably connected inside the mixing preparation device, a connecting column disposed outside the rotating shaft, a mounting seat disposed at the bottom of the connecting column, and a conveying pipe disposed at the bottom of the premixing disc. The mounting seat has an upwardly recessed cavity in the middle, and a flexible element is provided at the bottom of the cavity, and grinding plates are provided on both sides. This utility model grinds and premixes the powder and liquid raw materials conveyed to the premixing disc before conveying them into the mixing preparation device, which can reduce or avoid the agglomeration of powder raw materials and achieve better mixing effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of bone repair material production equipment, specifically relating to a preparation device for a composite tricalcium phosphate / tetracalcium phosphate. Background Technology

[0002] The preparation methods of compound tricalcium / tetracalcium phosphate include solid-state reaction sintering and spray drying. Before high-temperature sintering or spray drying, the raw materials (calcium source, phosphorus source, dopant, solvent, additives, etc.) for compound tricalcium / tetracalcium phosphate generally need to be mixed uniformly in a certain proportion to form a slurry. The mixing of the slurry is generally completed by a mixing preparation device. The working principle is to directly transport the calcium source and other powder raw materials to a mixing tank containing liquid raw materials such as solvents, and mix them by a stirring paddle. However, the calcium source and other powder raw materials required for the preparation of compound tricalcium / tetracalcium phosphate have small particle sizes and poor dispersibility. When directly added to the mixing preparation device and encountering a large amount of liquid raw materials, the powder is encapsulated and agglomerated by the liquid raw materials. Further addition of powder will exacerbate the agglomeration phenomenon, and the powder is not easily melted during stirring. Therefore, the prepared slurry will have poor uniformity, leading to a substandard final product. Therefore, this utility model provides a preparation device for compound tricalcium / tetracalcium phosphate to solve the above technical problems. Utility Model Content

[0003] The purpose of this invention is to provide a device for preparing compound tricalcium / tetracalcium phosphate in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A preparation apparatus for compound tricalcium / tetracalcium phosphate includes a mixing preparation device, and further includes a feeding structure and a premixing component disposed inside the mixing preparation device;

[0006] The premixing component includes a premixing disc inside the mixing preparation equipment, a rotating shaft rotatably connected inside the mixing preparation equipment, a connecting column outside the rotating shaft, a mounting base at the bottom of the connecting column, and a conveying pipe at the bottom of the premixing disc. The mounting base has an upward recessed cavity at its center, and a flexible component is provided at the bottom of the cavity. Grinding plates are provided on both sides.

[0007] As a further optimization of this utility model, protrusions are provided on the bottom of the grinding plate and the inner wall of the premixing disc.

[0008] As a further optimization of this utility model, the feeding structure includes at least one feeding pipe disposed above the premixing disc.

[0009] As a further optimization of this utility model, the mixing preparation equipment is a vertical mixer.

[0010] As a further optimization of this utility model, the feeding structure also includes at least one input pipe located inside the mixing preparation device and having three output ports, a coil located above the premixing disc and connected to one of the output ports of the input pipe, and several liquid outlets provided below the coil.

[0011] As a further optimization of this utility model, one of the remaining two output ports of the input pipe is aligned with the inclined side wall inside the premixing disc and connected to a high-pressure nozzle, and the other is located inside the mixing preparation equipment. Valves are provided on the three output ports of the input pipe and the conveying pipe.

[0012] As a further optimization of this utility model, the premixing component also includes a vibrator disposed inside the connecting column and a guide rod connected to the output shaft of the vibrator. The mounting base is a cavity, and a guide plate for connecting the guide rod and the flexible component extending into the cavity is provided inside the cavity of the mounting base.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention uses a premixing component to grind and premix powder and liquid raw materials that are intermittently fed into the premixing pan before feeding them into the mixing preparation equipment. This reduces or avoids the agglomeration of powder raw materials and achieves better mixing effect.

[0015] This invention achieves grinding of powder raw materials through continuous contact friction between the grinding plate and the inner wall of the premixing disc, reducing the occurrence of powder raw materials agglomerating into clumps. The flexible component swings left and right to clean the inner wall of the premixing disc, and the liquid raw material delivered by the high-pressure nozzle can rinse the inner wall of the premixing disc, further reducing the agglomeration of powder raw materials and their adhesion to the inner wall of the premixing disc. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is the utility model Figure 1 Enlarged view of the structure of part A.

[0018] Figure 3 This is a top view of the premixing disc of this utility model.

[0019] Figure 4 This is a perspective view of the premixing disc of this utility model.

[0020] In the diagram: 1. Mixing preparation equipment; 21. Premixing disc; 211. Conveying pipe; 22. Rotating shaft; 23. Connecting column; 24. Mounting base; 25. Grinding plate; 26. Vibrator; 27. Guide rod; 28. Guide plate; 29. ​​Flexible component; 31. Input pipe; 32. Coil; 4. Feed pipe. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] like Figure 1-4 As shown, a preparation apparatus for compound tricalcium / tetracalcium phosphate includes a mixing preparation device 1, a feeding structure and a premixing component disposed inside the mixing preparation device 1; in this embodiment, the mixing preparation device 1 is a vertical device, preferably a vertical mixer.

[0023] The premixing component includes a premixing disc 21 disposed inside the mixing preparation equipment 1, a rotating shaft 22 rotatably connected inside the mixing preparation equipment 1, a connecting column 23 disposed outside the rotating shaft 22, a mounting base 24 disposed at the bottom of the connecting column 23, and a conveying pipe 211 disposed at the bottom of the premixing disc 21. The middle part of the mounting base 24 is recessed upward to form an inner cavity. A flexible element 29 is provided at the bottom of the inner cavity, and grinding plates 25 are provided on both sides.

[0024] It should be noted that in this embodiment, the rotating shaft 22 is driven to rotate by a servo motor.

[0025] Preferably, both the bottom of the grinding plate 25 and the inner wall of the premixing disc 21 are provided with protrusions to better realize the functions of grinding and premixing powder raw materials and liquid raw materials.

[0026] Preferably, the feeding structure includes at least one feeding pipe 4 located above the premixing disk 21, for conveying calcium source, phosphorus source, and powder raw materials such as dopants and additives into the premixing disk 21 respectively.

[0027] Preferably, the feeding structure further includes at least one input pipe 31 located inside the mixing preparation device 1 and having three output ports, and a coil 32 located above the premixing disc 21 and connected to one of the output ports of the input pipe 31. Several liquid outlets are provided below the coil 32. It should be noted that the liquid inlet end of the input pipe 31 can be connected to the liquid raw material source through a delivery pump. The liquid raw material is delivered to the premixing disc 21 through the delivery pump, the input pipe 31, the coil 32 and the liquid outlets, so that the powder raw material and the liquid raw material are mixed to obtain the preparation raw material slurry of compound tricalcium phosphate / tetracalcium phosphate.

[0028] Preferably, of the remaining two output ports of the input pipe, one is aligned with the inclined side wall inside the premixing disc 21 and connected to a high-pressure nozzle, and the other is located inside the mixing preparation equipment 1. Valves are provided on all three output ports of the input pipe 31 and on the conveying pipe 211. During the premixing process, the valve on the output port inside the mixing preparation equipment 1 on the input pipe 31 can also be opened to convey liquid raw materials into the mixing preparation equipment 1.

[0029] Preferably, the premixed assembly further includes a vibrator 26 disposed inside the connecting column 23, a guide rod 27 connected to the output shaft of the vibrator 26, and the mounting base 24 is a cavity. Inside the cavity of the mounting base 24, there is a guide plate 28 for connecting with the guide rod 27 and a flexible member 29 extending into the cavity. The flexible member 29 can be a capillary flexible member such as a silicone brush or a plastic brush.

[0030] During use, various powder raw materials are fed into the premixing disc 21 through the feed pipe 4, and liquid raw materials are fed into the premixing disc 21 through the liquid outlet. The rotating shaft 22 drives the connecting column 23, mounting base 24, grinding plate 25, and flexible component 29 to swing left and right along the inner wall of the premixing disc 21. The powder raw materials are ground through continuous contact friction between the grinding plate 25 and the inner wall of the premixing disc 21. The flexible component 29 cleans the inner wall of the premixing disc 21, reducing or preventing the powder raw materials from agglomerating and adhering to the inner wall of the premixing disc 21. The powder raw materials and liquid raw materials are ground and premixed to obtain the raw material slurry for the preparation of compound tricalcium / tetracalcium phosphate. During the swinging of the connecting column 23, the vibrator 2 can also be activated. 6. The vibrator 26 drives the guide rod 27, guide plate 28, and flexible part 29 to vibrate, which enhances the cleaning effect and further reduces or avoids the situation where the powder raw materials agglomerate and adhere to the inner wall of the premixing disc 21. After grinding, premixing the powder raw materials and liquid raw materials, the valve on the output port connected to the input pipe 31 and the coil 32 is closed, and the valve on the output port connected to the high-pressure nozzle on the input pipe 31 and the valve on the conveying pipe 211 are opened. The raw material slurry for the preparation of compound tricalcium phosphate / tetracalcium phosphate is conveyed to the inside of the mixing preparation equipment 1 through the conveying pipe 211. The liquid raw materials delivered by the high-pressure nozzle can wash the inner wall of the premixing disc 21, further reducing the situation where the powder raw materials agglomerate and adhere to the inner wall of the premixing disc 21.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A preparation apparatus for compound tricalcium / tetracalcium phosphate, comprising a mixing preparation device (1), characterized in that: It also includes a feeding structure and premixing components located inside the mixing preparation equipment (1); The premixing component includes a premixing disc (21) inside the mixing preparation device (1), a rotating shaft (22) rotatably connected inside the mixing preparation device (1), a connecting column (23) outside the rotating shaft (22), a mounting base (24) at the bottom of the connecting column (23), and a conveying pipe (211) at the bottom of the premixing disc (21). The mounting base (24) is recessed upward to form an inner cavity. A flexible element (29) is provided at the bottom of the inner cavity, and grinding plates (25) are provided on both sides.

2. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 1, characterized in that: The grinding plate (25) has protrusions on its bottom and the inner wall of the premixing disc (21).

3. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 1, characterized in that: The feeding structure includes at least one feed pipe (4) located above the premixing pan (21).

4. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 1, characterized in that: The mixing preparation equipment (1) is a vertical mixer.

5. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 1, characterized in that: The feeding structure also includes at least one input pipe (31) located inside the mixing preparation device (1) and having three output ports, and a coil (32) located above the premixing disc (21) and connected to one of the output ports of the input pipe (31), with several liquid outlets below the coil (32).

6. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 5, characterized in that: Of the remaining two output ports of the input pipe (31), one is aligned with the inclined side wall inside the premixing disc (21) and connected to a high-pressure nozzle, and the other is located inside the mixing preparation equipment (1). Valves are provided on the three output ports of the input pipe (31) and the conveying pipe (211).

7. The apparatus for preparing a composite tricalcium / tetracalcium phosphate according to claim 1, characterized in that: The premixed assembly also includes a vibrator (26) disposed inside the connecting column (23) and a guide rod (27) connected to the output shaft of the vibrator (26). The mounting base (24) is a cavity inside, and a guide plate (28) for connecting to the guide rod (27) and a flexible member (29) extending into the cavity is provided inside the cavity of the mounting base (24).

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