A feeding device suitable for the production of hydroxyapatite powder

Abstract

This invention discloses a feeding device for the production of hydroxyapatite powder, aiming to solve the problems of uneven feeding, clogging, and dust pollution caused by the poor flowability and easy agglomeration of this type of powder. The device includes a frame, a feeding channel, a crushing device and a dust removal assembly located within the channel. The crushing device includes a fixed rod and a movable crushing shovel driven by a drive assembly, effectively preventing material bridging and agglomeration through active, reciprocating crushing action. The dust removal assembly includes a suction chamber, a filter screen, and a cleaning roller brush. When the crushing shovel moves, this mechanism can be periodically actuated, driving the cleaning roller brush to automatically clean the dust accumulated on the filter screen. This invention cleverly combines active crushing with a mechanically linked self-cleaning dust removal function, eliminating the need for an additional power source for the cleaning function. Its compact structure enables uniform, stable, and dust-free feeding, effectively improving production efficiency and environmental quality.

Description

Technical Field

[0001] This utility model relates to the field of hydroxyapatite production, specifically to a feeding device suitable for the production of hydroxyapatite powder. Background Technology

[0002] Hydroxyapatite, as an important artificial bone substitute and bioactive material, has wide applications in the biomedical field. Its production process typically involves fine powder processing, and hydroxyapatite powder possesses physical characteristics such as small particle size, large specific surface area, poor flowability, and a tendency to agglomerate under certain humidity conditions. Therefore, achieving uniform, stable, and dust-free feeding during the production process is crucial to ensuring product quality and a safe production environment.

[0003] Currently, existing powder feeding devices are relatively mature in handling common materials. Some devices, to address the problem of material agglomeration, install fixed dispersing rods in the feeding hopper, which initially impact and disperse the raw materials upon input. However, for hydroxyapatite powder, which is highly viscous and prone to forming hard lumps, this passive dispersion method is ineffective. The material easily "bridges" between the rods or bypasses them, failing to effectively break it down and often leading to uneven subsequent discharge rates or even blockages. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a feeding device suitable for the production of hydroxyapatite powder, so as to solve the problems of uneven feeding, blockage and dust pollution caused by the poor flowability and easy agglomeration of hydroxyapatite powder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A feeding device for the production of hydroxyapatite powder includes a frame, a feeding channel on the frame, and a crushing device and a dust removal component arranged in the feeding channel and on the material movement path.

[0007] The crushing device includes a material distribution section, which includes a fixed rod fixedly connected to the feeding channel and a movable crushing shovel. The crushing shovel is connected to a driving component to drive its movement.

[0008] The drive assembly includes a drive wheel with a first connecting rod hinged to it. The first connecting rod is fixedly connected to the crushing shovel. The drive assembly also includes a second connecting rod and an auxiliary connecting rod. One end of the second connecting rod is hinged to the feeding channel, and the other end is hinged to the crushing shovel. One end of the auxiliary connecting rod is hinged to the feeding channel, and the other end is hinged to the first connecting rod.

[0009] The dust removal assembly includes a dust suction chamber disposed on the feeding channel, a filter screen disposed on the dust suction chamber, and a cleaning roller brush acting on the filter screen and a rotatable actuating block. Telescopic arms are connected to both ends of the cleaning roller brush, and the telescopic arms are fixedly connected to the actuating block.

[0010] The actuating block is positioned on the displacement path of the crushing shovel. Moving the crushing shovel can actuate the actuating block, causing the telescopic arm to swing.

[0011] As a preferred technical solution, there are multiple fixing rods, and the fixing rods are spaced apart from each other; the crushing shovel includes multiple crushing teeth, and there is a space between two adjacent fixing rods for the crushing teeth to pass through.

[0012] As a preferred technical solution, the dust removal assembly includes a return spring acting on the telescopic arm.

[0013] As a preferred technical solution, an air suction fan is also provided inside the dust suction chamber.

[0014] As a preferred technical solution, the drive wheel is connected to a drive motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Active High-Efficiency Crushing: By setting up a movable crushing shovel driven by a drive component, which works in conjunction with a fixed rod, the falling hydroxyapatite powder is actively and forcibly crushed and cleared. The reciprocating motion of the crushing shovel can effectively break up hard lumps, prevent material "bridging" and blockage, and ensure smooth material flow and uniform discharge.

[0017] 2. Linked Self-Cleaning Dust Removal: This system cleverly links the cleaning action of the dust removal component with the movement of the crushing device. During its movement, the crushing shovel directly actuates the actuating block, driving the cleaning roller brush to clean the filter screen, achieving automatic cleaning of the dust removal system. This design requires no additional power source or control system, has a compact structure, reliable operation, and can continuously maintain the permeability of the filter screen, ensuring dust removal efficiency and effectively improving the production environment.

[0018] 3. Improve product quality: By ensuring the uniformity and stability of the front-end feeding, a stable and reliable source of materials is provided for subsequent production processes (such as mixing and granulation), which helps to improve the uniformity of the final product quality.

[0019] 4. High structural integration: It organically integrates crushing, dredging, dust removal and self-cleaning functions into one unit. The components work together to improve the functionality and automation level of the equipment, while simplifying the overall structure and control logic. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the movement of the crushing device in one embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Rack;

[0026] 2. Feeding channel;

[0027] 21. Crushing device; 211. Fixing rod; 212. Crushing shovel;

[0028] 213. Drive assembly; 2131. Drive wheel; 2132. First connecting rod; 2133. Second connecting rod; 2134. Auxiliary connecting rod;

[0029] 22. Dust removal assembly; 221. Suction chamber; 222. Filter screen; 223. Cleaning roller brush; 224. Toggle block; 225. Telescopic arm; 226. Return spring; 227. Suction fan;

[0030] 3. Drive motor. Detailed Implementation

[0031] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0032] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1-3 As shown, this utility model provides a feeding device suitable for the production of hydroxyapatite powder. The device mainly includes a frame 1 and a feeding channel 2 disposed on the frame 1. Figure 1In the middle section, the upper part of the feeding channel 2 is connected to a feeding hopper, and the lower part is connected to a discharge screw conveyor. The material enters from the feeding hopper, is processed, and is stably output by the discharge screw conveyor.

[0034] Inside the feeding channel 2, along the material's falling path, a crushing device 21 and a dust removal component 22 are sequentially installed.

[0035] Regarding crushing device 21:

[0036] like Figure 2 As shown, the crushing device 21 is used to crush agglomerated hydroxyapatite powder. It includes multiple horizontally arranged fixed rods 211 and a movable crushing shovel 212. The gaps between the fixed rods 211 allow material to pass through. The crushing shovel 212 has multiple crushing teeth that can pass through the space between adjacent fixed rods 211.

[0037] The movement of the crushing shovel 212 is driven by the drive assembly 213. The drive assembly 213 includes a drive wheel 2131 driven by the drive motor 3. The drive wheel 2131 is fixedly connected to the crushing shovel 212 via a hinged first connecting rod 2132. Simultaneously, the crushing shovel 212 is also hinged to the side wall of the feeding channel 2 via a second connecting rod 2133. Furthermore, the first connecting rod 2132 is also hinged to the side wall of the feeding channel 2 via an auxiliary connecting rod 2134. When the drive motor 3 drives the drive wheel 2131 to rotate, through this four-bar linkage, the crushing shovel 212 will generate a reciprocating oscillation along a specific trajectory. Its crushing teeth perform powerful shearing, piercing, and crushing actions between the fixed rods 211, thereby efficiently breaking up agglomerated materials.

[0038] like Figure 2 and Figure 3 As shown, the dust removal component 22 is positioned above the crushing device 21 and is used to collect the dust generated during the crushing process. This component includes a dust suction chamber 221 that communicates with the feeding channel 2. Preferably, a suction fan 227 is installed inside the chamber to generate a negative pressure airflow and draw the dust in the channel into the dust suction chamber 221.

[0039] The entrance to the suction chamber 221 is covered with a filter screen 222 to trap dust and allow clean air to escape. To prevent the filter screen 222 from becoming clogged with dust and affecting the suction effect, a self-cleaning mechanism is provided. This mechanism includes a cleaning roller brush 223, the two ends of which are connected to a rotatable actuating block 224 via telescopic arms 225. The telescopic arms 225 can be equipped with a spring structure to make them telescopic, and the actuating block 224 is positioned precisely in the movement path of the shredder 212.

[0040] It should be noted that a baffle plate (not shown) is provided inside the feeding channel 2 to prevent hydroxyapatite powder from entering the area where the drive assembly 213 is located.

[0041] Workflow:

[0042] Feeding and Crushing: Hydroxyapatite powder is added from the feeding hopper and falls into the crushing device 21 area. Large pieces of material are first blocked and initially crushed by the fixing rod 211.

[0043] The drive motor 3 starts, and the drive assembly 213 causes the crushing shovel 212 to swing back and forth. The crushing teeth of the crushing shovel 212 pass through the gap between the fixed rods 211 to actively and continuously crush the material, effectively preventing material bridging and blockage, and ensuring that the material falls smoothly.

[0044] Dust collection and self-cleaning: During the crushing process, the suction fan 227 works to draw the dust into the filter screen 222, where the dust is intercepted and concentrated on the surface of the filter screen 222.

[0045] Integrated cleaning: such as Figure 3 As shown, when the crushing shovel 212 moves to a specific position on its path, it impacts and pushes the actuating block 224. The actuating block 224 rotates, driving the cleaning roller brush 223 to sweep across the surface of the filter screen 222 via the telescopic arm 225, brushing off the attached dust. The brushed-off dust returns to the feeding channel 2 under gravity, mixing with the majority of the material and avoiding waste of raw materials.

[0046] After the shredder 212 leaves the actuating block 224, the return spring 226 pulls the cleaning roller brush 223 and the actuating block 224 back to their initial positions, waiting for the next cleaning action.

[0047] The powder, after being crushed and dusted, falls evenly into the discharge screw conveyor below and is steadily transported to the next process.

[0048] In summary, this utility model successfully solves the problems of agglomeration, blockage, and dust in the feeding process of hydroxyapatite powder by combining an active crushing device with a mechanically linked self-cleaning dust removal device, thus achieving uniform, stable, and clean feeding.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A feeding device suitable for the production of hydroxyapatite powder, characterized in that: Includes a frame, on which a feeding channel is provided, and a crushing device and a dust removal component are provided in the feeding channel and along the material movement path; The crushing device includes a material distribution section, which includes a fixed rod fixedly connected to the feeding channel and a movable crushing shovel. The crushing shovel is connected to a driving component to drive its movement. The drive assembly includes a drive wheel, a first connecting rod hinged to the drive wheel, the first connecting rod being fixedly connected to the crushing shovel, and the drive assembly also includes a second connecting rod and an auxiliary connecting rod; One end of the second connecting rod is hinged to the feeding channel, and the other end of the second connecting rod is hinged to the crushing shovel; One end of the auxiliary connecting rod is hinged to the feeding channel, and the other end of the auxiliary connecting rod is hinged to the first connecting rod; The dust removal assembly includes a dust suction chamber disposed on the feeding channel, a filter screen disposed on the dust suction chamber, and a cleaning roller brush acting on the filter screen and a rotatable actuating block. Telescopic arms are connected to both ends of the cleaning roller brush, and the telescopic arms are fixedly connected to the actuating block. The actuating block is positioned on the displacement path of the crushing shovel. Moving the crushing shovel can actuate the actuating block, causing the telescopic arm to swing.

2. A feeding device for the production of hydroxyapatite powder according to claim 1, characterized in that, The fixing rods are multiple, and the fixing rods are spaced apart from each other; The shredder includes multiple shredding teeth, and a space is provided between two adjacent fixed rods for the shredding teeth to pass through.

3. A feeding device for the production of hydroxyapatite powder according to claim 1, characterized in that, The dust removal assembly includes a return spring that acts on the telescopic arm.

4. A feeding device for the production of hydroxyapatite powder according to claim 1, characterized in that, The dust collection chamber is also equipped with an air intake fan.

5. A feeding device for the production of hydroxyapatite powder according to claim 1, characterized in that, The drive wheel is connected to a drive motor.

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