A rapid grinding device

Abstract

This invention provides a rapid pulverizing device, including a DC motor connected to a power source via a PWM DC motor speed controller. One end of a sleeve is connected to the housing of the DC motor. The inner wall of one end of the sleeve is connected to the output shaft of the DC motor via bearings arranged at intervals. The end of the DC motor's output shaft is locked to a locking block by bolts. A hexagonal groove is provided on the end face of the locking block away from the bearing, matching the hexagonal prism of the cutter head. The other end of the sleeve is threaded to a fixed base. A sliding sleeve is provided between the sleeve and the fixed base. A steel ball is provided in the middle of the other end of the sleeve. The sliding sleeve can press the steel ball and lock it into the annular groove on the outer ring of one end of the cutter head. This invention uses a sliding sleeve to press the steel ball and lock it into the annular groove on the outer ring of one end of the cutter head, thus fixing the cutter head within the locking block. The DC motor is connected to a power source via a PWM DC motor speed controller. The power source can be a commercially available power adapter or a commercially available rechargeable battery, making it convenient to carry, install, and disassemble.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a rapid grinding device. Background Technology

[0002] Natural biological skin possesses extremely high tensile strength and shear resistance due to its rich collagen content, the interwoven network of collagen fibers, and the presence of elastin. Current technologies for cutting or breaking down isolated natural biological skin to micron-sized particles primarily involve repeated freeze-drying followed by mechanical pulverization, or cryogenic freezing followed by grinding. These technologies suffer from the following drawbacks: homogenizers are expensive and not convenient to carry and use.

[0003] Therefore, designing a rapid grinding device has become an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a rapid crushing device to solve at least one of the above-mentioned technical problems.

[0005] The technical solution of this utility model is: a rapid pulverizing device, including a DC motor, the power line of the DC motor is connected to the output terminal of a PWM DC motor speed controller, the input terminal of the PWM DC motor speed controller is connected to a power supply, which is a power adapter or a battery; the PWM DC motor speed controller is also provided with an on / off switch and a speed control knob, one end of the housing of the DC motor is connected to a sleeve, the inner wall of one end of the sleeve is connected to the output shaft of the DC motor through bearings arranged at intervals, the end of the output shaft of the DC motor is locked to a locking block by bolts, a hexagonal groove is provided on the end face of the locking block away from the bearing, one end of the cutter head includes an internal hexagonal prism, the hexagonal groove matches the hexagonal prism, the other end of the sleeve is threaded to a fixed base, a sliding sleeve is provided between the sleeve and the fixed base, a steel ball is provided in the middle of the other end of the sleeve, the sliding sleeve can press the steel ball and lock it into the annular groove of the outer ring of one end of the cutter head.

[0006] This invention uses a DC motor housing connected to one end of a sleeve. The inner wall of the sleeve is connected to the output shaft of the DC motor via bearings arranged at intervals, enabling the output shaft of the DC motor to rotate within the sleeve. The end of the DC motor's output shaft is locked to a locking block by bolts, driving the cutter head to rotate. The other end of the sleeve is threaded to a fixed base. A sliding sleeve is provided between the sleeve and the fixed base. A steel ball is placed in the middle of the other end of the sleeve. By lifting the sliding sleeve and maintaining the lifting tension, the cutter head is gently rotated until the hexagonal prism of the cutter head aligns with the hexagonal prism of the locking block. When the groove aligns, the cutter head can no longer rotate. Slowly push the cutter head into the hexagonal groove of the locking block. A crisp clicking sound indicates that the steel ball and the annular groove on the outer edge of one end of the cutter head are tightly fitted. Finally, release the sliding sleeve to return to its original position. The sliding sleeve presses the steel ball, and the cutter head is fixed in the locking block. The power cord of the DC motor is connected to the power supply through a PWM DC motor speed controller. The power supply uses a commercially available power adapter or a commercially available rechargeable battery. It is convenient to carry, install, and disassemble, solving the technical defects of high cost and inconvenience of carrying and using homogenizers. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the blade mounting structure of this utility model.

[0009] Figure 3 This is a schematic diagram of the fixing base structure of this utility model.

[0010] Figure 4 This is a schematic diagram of the card block structure of this utility model.

[0011] Figure 5 for Figure 4 AA cross-section view.

[0012] Figure 6 for Figure 4 The right view.

[0013] Figure 7 This is a left view of one end of the blade of this utility model.

[0014] In the diagram: 1. DC motor; 2. PWM DC motor speed controller; 3. Sleeve; 4. Bearing; 5. Bushing; 6. Fixing base; 7. Clamping block; 8. Sliding sleeve; 9. Cutting head; 601. Second annular countersunk groove; 602. First threaded hole; 701. Irregular countersunk hole; 702. Second threaded hole; 703. Hexagonal groove; 901. Hexagonal column; 902. Annular column. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] See Figure 1-7 The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore lack substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0017] Example 1: A rapid grinding device, referenced Figure 1 , Figure 2 , Figure 6 , Figure 7The system includes a DC motor 1, whose power cord is connected to the output terminal of a PWM DC motor speed controller 2. The input terminal of the PWM DC motor speed controller 2 is connected to a power supply, which can be a commercially available power adapter or a commercially available battery. The PWM DC motor speed controller 2 is also equipped with an on / off switch and a speed control knob. The on / off switch is a running switch marked II / O / I, where O represents off, I represents clockwise rotation of the cutter head, and II represents counterclockwise rotation of the cutter head. The speed control knob can adjust the rotation speed of the cutter head 9 during machine operation. The housing of the DC motor 1 is connected to one end of the sleeve 3. One end of the sleeve 3 is connected to the output shaft of the DC motor 1 via bearings 4 arranged at intervals. The end of the output shaft of the DC motor 1 is locked to the locking block 7 by bolts. A hexagonal groove 703 is provided on the end face of the locking block 7 away from the bearing 4. One end of the cutter head 9 includes an internal hexagonal prism 901. The hexagonal groove 703 matches the hexagonal prism 901. The other end of the sleeve 3 is threaded to the fixed seat 6. A sliding sleeve 8 is provided between the sleeve 3 and the fixed seat 6. A steel ball is provided in the middle of the other end of the sleeve 3. The sliding sleeve 8 can press the steel ball and lock it into the annular groove on the outer ring of one end of the cutter head 9. This invention uses a DC motor housing connected to one end of a sleeve. The inner wall of the sleeve is connected to the output shaft of the DC motor via bearings arranged at intervals, enabling the output shaft of the DC motor to rotate within the sleeve. The end of the DC motor's output shaft is locked to a locking block by bolts, driving the cutter head to rotate. The other end of the sleeve is threaded to a fixed base. A sliding sleeve is provided between the sleeve and the fixed base. A steel ball is placed in the middle of the other end of the sleeve. By lifting the sliding sleeve and maintaining the lifting tension, the cutter head is gently rotated until the hexagonal prism of the cutter head aligns with the hexagonal prism of the locking block. When the groove aligns, the cutter head can no longer rotate. Slowly push the cutter head into the hexagonal groove of the locking block. A crisp clicking sound indicates that the steel ball and the annular groove on the outer edge of one end of the cutter head are tightly fitted. Finally, release the sliding sleeve to return to its original position. The sliding sleeve presses the steel ball, and the cutter head is fixed in the locking block. The power cord of the DC motor is connected to the power supply through a PWM DC motor speed controller. The power supply uses a commercially available power adapter or a commercially available rechargeable battery. It is convenient to carry, install, and disassemble, solving the technical defects of high cost and inconvenience of carrying and using homogenizers.

[0018] Example 2: Based on Example 1, one end of the sleeve 3 includes a circular plate with several circumferentially distributed first through holes. These first through holes communicate with the housing mounting holes of the DC motor 1. A first bolt is installed within each first through hole, passing through the housing mounting holes from the end furthest from the output shaft of the DC motor 1, and is then fixed to the circular plate by a nut. A bushing 5 is installed on the outer ring of the output shaft of the DC motor 1, located between two bearings 4. The outer diameter of the bushing 5 is smaller than the flange diameter of the inner ring of the bearing 4. This invention uses a bushing between two bearings, with the outer diameter of the bushing smaller than the flange diameter of the inner ring of the bearing, to limit the installation of the inner ring of the bearing.

[0019] Example 3: Based on Example 2, the other end of the sleeve 3 is a first three-section stepped shaft. The large end of the first three-section stepped shaft is connected to the circular plate, and the middle section of the first three-section stepped shaft contacts the inner ring of one end of the sliding sleeve 8. The steel ball is located in the middle of the small end of the first three-section stepped shaft, and the outer ring of the small end of the first three-section stepped shaft away from the middle section is provided with a threaded section, which is threadedly connected to the fixed seat 6. This utility model uses the middle section of the first three-section stepped shaft to contact the inner ring of one end of the sliding sleeve to guide the lifting sliding sleeve; and uses the threaded section on the outer ring of the small end of the first three-section stepped shaft away from the middle section, which is threadedly connected to the fixed seat, to connect the sleeve and the fixed seat as one unit.

[0020] Example 4: Based on Example 3, a stepped hole is provided in the large end of the first three-segment stepped shaft. The bearing 4 and the bushing 5 are located at the small end of the stepped hole. A first annular groove is provided on the bottom surface of the small end of the stepped hole. One end of the outer diameter of the first annular groove presses against the end face of the outer ring of the bearing 4. The inner diameter of the first annular groove is smaller than the diameter of the flange of the inner ring of the bearing 4. One end of the inner diameter of the first annular groove presses against the flange of the inner ring of the bearing 4. This utility model uses a stepped hole in the large end of the first three-segment stepped shaft, and a first annular groove is provided on the bottom surface of the small end of the stepped hole. By pressing the end face of the outer ring of the bearing with one end of the outer diameter of the first annular groove, and pressing the flange of the inner ring of the bearing with one end of the inner diameter of the first annular groove, the outer and inner rings of the bearings adjacent to it are limited.

[0021] Example 5: Based on Example 4, with reference to... Figure 4 The locking block 7 is located at the large end of the stepped hole. The locking block 7 is a second or third stepped shaft. The outer diameter of the small end of the second or third stepped shaft is smaller than the diameter of the flange of the inner ring of the bearing 4. The small end of the second or third stepped shaft presses against the flange of the inner ring of the bearing 4 that is close to it. The bolt is located on the outer ring of the middle section of the second or third stepped shaft. The hexagonal groove 703 is located at the center of the end face of the large end of the second or third stepped shaft. This utility model uses the small end of the second or third stepped shaft with an outer diameter smaller than the flange diameter of the inner ring of the bearing, and limits the bearing that is close to it by using the small end of the locking block.

[0022] Example 6: Based on Example 5, with reference to... Figure 5The DC motor 1 has a parallel first plane at its output shaft end. A countersunk hole 701 is located at the center of the small end face of the second and third stepped shafts. The countersunk hole 701 includes a parallel second plane, and the first plane mates with the second plane. A second threaded hole 702 is located on the outer ring of the middle section of the second and third stepped shafts. The second threaded hole 702 is perpendicular to the center of the second plane. A bolt is located within the second threaded hole 702, and the stud end of the bolt presses against the first plane of the DC motor 1 output shaft. This invention utilizes a countersunk hole at the center of the small end face of the second and third stepped shafts. The second plane of the countersunk hole mates with the first plane at the end of the DC motor output shaft. The bolt, through the second threaded hole on the outer ring of the middle section of the second and third stepped shafts, presses against the first plane of the DC motor output shaft, transmitting the torque of the DC motor output shaft to the locking block.

[0023] Example 7: Based on Example 5, the sliding sleeve 8 is a two-section stepped shaft. The large end of the two stepped shafts is close to the sleeve 3. A first gap is provided between the large end of the two stepped shafts and the large end of the first and third stepped shafts. A first countersunk hole is provided on the end face of the large end of the two stepped shafts. The middle section of the first and third stepped shafts is located in the first countersunk hole. A second gap is provided between the bottom surface of the first countersunk hole and the middle section of the first and third stepped shafts. The first gap is greater than or equal to the second gap. A second countersunk hole is provided on the end face of the small end of the stepped shaft. A second through hole is provided between the first countersunk hole and the second countersunk hole. The small end of the first and third stepped shafts is located in the second through hole. The distance between the inner wall of the second countersunk hole and the outer ring of the small end of the first and third stepped shafts is less than the diameter of the steel ball. The sliding sleeve of this utility model is a two-section stepped shaft. The large end of the two stepped shafts is close to the sleeve side. The end face of the large end of the two stepped shafts is provided with a first countersunk hole that fits with the middle section of the first three-section stepped shaft. The end face of the small end of the stepped shaft is provided with a second countersunk hole. The distance between the inner wall of the second countersunk hole and the outer ring of the small end of the first three-section stepped shaft is less than the diameter of the steel ball. A first gap is provided between the large end of the two stepped shafts and the large end of the first three-section stepped shaft. A second gap is provided between the bottom surface of the first countersunk hole and the middle section of the first three-section stepped shaft. The first gap is greater than or equal to the second gap. When the sliding sleeve is lifted, because the first gap is greater than or equal to the second gap, the steel ball can be located between the inner wall of the second countersunk hole and the outer ring of the small end of the first three-section stepped shaft. At this time, the cutter head can be smoothly inserted into the hexagonal groove.

[0024] Example 8: Based on Example 7, with reference to... Figure 3The fixed base 6 is a six-segment stepped shaft. The small end of the six-segment stepped shaft is close to the sleeve 3. The end face of the small end of the six-segment stepped shaft is provided with three-segment stepped holes. The outer ring of the large end of the three-segment stepped holes is provided with a second annular groove 601. The small end of the stepped shaft of the sliding sleeve 8 is located in the second annular groove 601. A third gap is provided between the bottom surface of the large end of the three-segment stepped holes and the bottom surface of the second countersunk hole. The third gap is smaller than the second gap. The middle section of the three-segment stepped holes is a first threaded hole 602. The first threaded hole 602 is screwed into the threaded section of the sleeve 3. The inner diameter of the small end of the three-segment stepped holes is larger than the outer diameter of the cutter head 9. The fixed base used in this utility model is a six-segment stepped shaft. The end face of the six-segment stepped shaft is provided with three-segment stepped holes. The outer ring of the large end of the three-segment stepped holes is provided with a second annular groove. The small end of the stepped shaft of the sliding sleeve is located in the second annular groove, which can prevent the sliding sleeve from coming out of the sleeve and the fixed base when the sliding sleeve is lifted.

[0025] Example 9: Based on Example 8, with reference to... Figure 7 One end of the cutter head 9 also includes an annular post 902, which is located on the outer ring of the hexagonal post 901. The inner diameter of the annular post 902 is larger than the outer diameter of the small end of the second and third stepped shafts. The distance between the end face of the annular post 902 and the annular groove is smaller than the second gap. In this invention, the annular post is located on the outer ring of the hexagonal post. When the sliding sleeve is lifted, because the first gap is greater than or equal to the second gap, the distance between the end face of the annular post and the annular groove is smaller than the second gap. The steel ball can be located between the inner wall of the second countersunk hole and the outer ring of the small end of the first and third stepped shafts. At this time, the cutter head can be smoothly inserted into the hexagonal groove.

[0026] Example 10: Based on Example 9, the other end of the blade 9 includes dozens of circumferentially distributed cutting sections, each of which is a fan-shaped block with a cutting edge on both straight edges. This invention uses dozens of circumferentially distributed cutting sections on the other end of the blade, each of which is a fan-shaped block with a cutting edge on both straight edges. Under room temperature conditions, after natural biological skin is excised, it is rapidly pulverized in physiological saline to micron-sized irregular filaments and particles, maintaining the activity of cytokines and other substances in the skin. This method is suitable for preparing micron-sized skin filaments and for rapid pulverization of excised patient skin in surgical environments.

[0027] In practice, DC motor 1 is a commercially available permanent magnet DC motor powered by DC 24V; the power supply is a commercially available 24V power adapter connected to 220V AC power, or a commercially available 24V battery; the PWM DC motor speed controller 2 is a commercially available product; the cutting part of the cutter head 9 has the same structure as the FSH-2A cutter head of the existing FSH-2 high-speed disperser. Sleeve 3, bushing 5, fixed base 6, clamping block 7, sliding sleeve 8, and cutter head 9 are all made of stainless steel.

[0028] The above-described embodiments are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A rapid grinding device, comprising a DC motor (1), wherein the power supply line of the DC motor (1) is connected to the output terminal of a PWM DC motor speed controller (2), and the input terminal of the PWM DC motor speed controller (2) is connected to a power supply, wherein the power supply is a power adapter or a battery; the PWM DC motor speed controller (2) is also provided with an on / off switch and a speed control knob, characterized in that: The housing of the DC motor (1) is connected to one end of the sleeve (3). The inner wall of one end of the sleeve (3) is connected to the output shaft of the DC motor (1) through bearings (4) arranged at intervals. The end of the output shaft of the DC motor (1) is locked to the locking block (7) by bolts. A hexagonal groove (703) is provided on the end face of the locking block (7) away from the bearing (4). One end of the cutter head (9) includes an internal hexagonal prism (901). The hexagonal groove (703) matches the hexagonal prism (901). The other end of the sleeve (3) is threaded to the fixed seat (6). A sliding sleeve (8) is provided between the sleeve (3) and the fixed seat (6). A steel ball is provided in the middle of the other end of the sleeve (3). The sliding sleeve (8) can press the steel ball and lock it into the annular groove of the outer ring of one end of the cutter head (9).

2. A rapid blending device according to claim 1, wherein: One end of the sleeve (3) includes a circular plate with several first through holes evenly distributed around the circumference. The first through holes are connected to the housing mounting holes of the DC motor (1). A first bolt is installed in the first through hole. The first bolt passes through the housing mounting hole from the end away from the output shaft of the DC motor (1) and is fixed to the circular plate by a nut. A bushing (5) is provided on the outer ring of the output shaft of the DC motor (1). The bushing (5) is located between two bearings (4). The outer diameter of the bushing (5) is smaller than the flange diameter of the inner ring of the bearing (4).

3. A rapid blending device according to claim 2, wherein: The other end of the sleeve (3) is the first three-section stepped shaft. The large end of the first three-section stepped shaft is connected to the circular plate. The middle section of the first three-section stepped shaft is in contact with the inner ring of one end of the sliding sleeve (8). The steel ball is located in the middle of the small end of the first three-section stepped shaft. The outer ring of the small end of the first three-section stepped shaft away from the middle section is provided with a threaded section. The threaded section is threadedly connected to the fixed seat (6).

4. A rapid blending device according to claim 3, wherein: The first three-section stepped shaft has a stepped hole at the large end. The bearing (4) and the bushing (5) are located at the small end of the stepped hole. The bottom surface of the small end of the stepped hole has a first annular groove. One end of the outer diameter of the first annular groove presses against the outer ring end face of the bearing (4). The inner diameter of the first annular groove is smaller than the flange diameter of the inner ring of the bearing (4). One end of the inner diameter of the first annular groove presses against the flange of the inner ring of the bearing (4).

5. A rapid blending device according to claim 4, wherein: The locking block (7) is located at the large end of the stepped hole. The locking block (7) is the second and third stepped shaft. The outer diameter of the small end of the second and third stepped shaft is smaller than the flange diameter of the inner ring of the bearing (4). The small end of the second and third stepped shaft presses against the flange of the inner ring of the bearing (4) that is close to it. The bolt is located on the outer ring of the middle section of the second and third stepped shaft. The hexagonal groove (703) is located at the center of the large end face of the second and third stepped shaft.

6. A rapid blending device according to claim 5, wherein: The output shaft of the DC motor (1) is provided with a parallel first plane at the end. The small end face of the second and third stepped shaft is provided with a countersunk hole (701). The countersunk hole (701) includes a parallel second plane. The first plane and the second plane cooperate. The middle section of the second and third stepped shaft is provided with a second screw hole (702). The second screw hole (702) is arranged perpendicular to the center of the second plane. The bolt is located in the second screw hole (702). The stud end of the bolt presses against the first plane of the output shaft of the DC motor (1).

7. A rapid blending device according to claim 5, wherein: The sliding sleeve (8) consists of two stepped shafts. The larger ends of the two stepped shafts are close to the sleeve (3). A first gap is provided between the larger ends of the two stepped shafts and the larger ends of the first and third stepped shafts. A first countersunk hole is provided on the end face of the larger ends of the two stepped shafts. The middle section of the first and third stepped shafts is located in the first countersunk hole. A second gap is provided between the bottom surface of the first countersunk hole and the middle section of the first and third stepped shafts. The first gap is greater than or equal to the second gap. A second countersunk hole is provided on the end face of the smaller end of the stepped shaft. A second through hole is provided between the first countersunk hole and the second countersunk hole. The smaller end of the first and third stepped shafts is located in the second through hole. The distance between the inner wall of the second countersunk hole and the outer ring of the smaller end of the first and third stepped shafts is less than the diameter of the steel ball.

8. A rapid blending device according to claim 7, wherein: The fixed seat (6) is a six-segment stepped shaft. The small end of the six-segment stepped shaft is close to the sleeve (3). The end face of the small end of the six-segment stepped shaft is provided with three-segment stepped holes. The outer ring of the large end of the three-segment stepped holes is provided with a second annular groove (601). The small end of the stepped shaft of the sliding sleeve (8) is located in the second annular groove (601). A third gap is provided between the bottom surface of the large end of the three-segment stepped holes and the bottom surface of the second countersunk hole. The third gap is smaller than the second gap. The middle section of the three-segment stepped holes is a first screw hole (602). The first screw hole (602) is screwed into the threaded section of the sleeve (3). The inner diameter of the small end of the three-segment stepped holes is larger than the outer diameter of the cutter head (9).

9. A rapid grinding device according to claim 8, characterized in that: One end of the cutter head (9) also includes an annular post (902), which is located on the outer ring of the hexagonal post (901). The inner diameter of the annular post (902) is larger than the outer diameter of the small end of the second and third stepped shafts. The distance between the end face of the annular post (902) and the annular groove is smaller than the second gap.

10. A rapid blending device according to claim 9, wherein: The other end of the blade (9) includes dozens of cutting sections evenly distributed around the circumference. Each cutting section is a fan-shaped block with a cutting edge on both straight sides.

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