CN104759314B - A kind of medical grinder - Google Patents

Abstract

The invention discloses a medical drug grinding machine with high grinding efficiency, good quality and stable operation. It includes a fixed upper grinding disc, a lower grinding disc and a power source for driving the rotation of the lower grinding disc; the lower surface of the upper grinding disc is an umbrella structure; the upper surface of the lower grinding disc is connected with the upper grinding disc The lower surface matches the umbrella structure; the upper surface of the lower grinding disc and the lower surface of the upper grinding disc are arranged oppositely, and the centers of the upper grinding disc and the lower grinding disc are located on the same vertical line; the outer edge of the lower surface of the upper grinding disc The vertical distance between the upper surface of the lower grinding disc is 0.2-1.0mm; the vertical distance between the inner edge of the lower surface of the upper grinding disc and the upper surface of the lower grinding disc is 5.0-20.0mm; and on the upper grinding disc There is also a feeding port in the center, which has high grinding efficiency, good quality and stable operation.

Description

A kind of medical drug grinder

technical field

The invention relates to the technical field of medical equipment, in particular to a medical drug grinder.

Background technique

The size, shape, and distribution of drug particles are crucial to the performance and function of drug formulations. Therefore, in the process of drug development, production and clinical testing, it is necessary to ensure the control of drug particle parameters at all times. Therefore, the drug must be controlled accordingly. Grinding, etc.; eg, active ingredients and excipients in nasal spray drug products, usually dissolved or suspended in the formulation. Spray particle size, shape and other parameters directly affect the delivery, dissolution and acceptance of drug ingredients; rheology is another important tool in the pharmaceutical industry, and rheological properties determine the consistency of many formulations including creams, suspensions and solutions. Key performance characteristics. As another example, in the current clinical medical treatment, some patients need to place a gastric tube for nasal feeding due to problems such as coma, weakness, and inability to eat and take medicine by themselves, that is, directly inject food or medicine into the gastric tube through an empty needle. Taking oral medicine is relatively cumbersome. The usual method is to prepare a special medicine pounding device, manually pound the oral medicine into powder, pour it into another container and mix it with warm water, and then beat the medicine liquid with an empty needle. into the gastric tube. However, the existing drug pounding device is time-consuming and laborious due to the manual pounding of the drug, and the contact between the drug and the outside world in the process of pounding the drug is likely to cause the drug to be polluted. For example, a drug grinding and rolling machine shown in the patent number "201410277766.4", its structure is composed of "a fixed roller structure is arranged in the concave groove of the frame shell, and the fixed roller is connected to the transmission motor through the rotating shaft. There is a movable roller structure on the side of the fixed roller in the groove. The movable roller is connected to the side of the concave groove through the buffer device and the fixed rod. The buffer device is arranged between the fixed rod and the movable roller. The buffer device is equipped with a strong spring. In the above description, there are problems such as complex structure, difficult manufacture, and low efficiency during grinding. Therefore, it is indeed necessary to improve the grinding machine in the prior art.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a medical drug grinding machine with high grinding efficiency, good quality and stable operation. It includes a fixed upper grinding disc, a lower grinding disc and a power source for driving the rotation of the lower grinding disc; the lower surface of the upper grinding disc is an umbrella structure; the upper surface of the lower grinding disc is connected with the upper grinding disc The lower surface matches the umbrella-shaped structure; the upper surface of the lower grinding disc and the lower surface of the upper grinding disc are arranged oppositely, and the centers of the upper grinding disc and the lower grinding disc are located on the same vertical line; the outer edge of the lower surface of the upper grinding disc The vertical distance between the upper surface of the lower grinding disc is 0.2-1.0mm; the vertical distance between the inner edge of the lower surface of the upper grinding disc and the upper surface of the lower grinding disc is 5.0-20.0mm; and on the upper grinding disc There is also a feeding port in the center, and the invention has high grinding efficiency, good quality and stable operation.

The present invention solves the technical problem, and the adopted technical solution is: a medical drug grinder, comprising a fixed upper grinding disc, a lower grinding disc and a power source for driving the lower grinding disc to rotate; the lower grinding disc of the upper grinding disc The surface is an umbrella-shaped structure; the upper surface of the lower grinding disc is an umbrella-shaped structure matching the lower surface of the upper grinding disc; the upper surface of the lower grinding disc is opposite to the lower surface of the upper grinding disc, and the upper grinding disc and The center of the lower grinding disc is located on the same vertical line; and a feed inlet is also provided at the center of the upper grinding disc; the vertical distance between the outer edge of the lower surface of the upper grinding disc and the upper surface of the lower grinding disc is 0.2-1.0 mm; the vertical distance between the inner edge of the lower surface of the upper grinding disc and the upper surface of the lower grinding disc is 5.0-20.0 mm. The material enters the gap between the upper grinding disc and the lower grinding disc through the feeding port, and the grinding process of the material is realized through the rotation of the lower grinding disc.

Further, at least one strip-shaped protrusion is provided on the upper surface of the lower grinding disc along its radial direction, and the length of the strip-shaped protrusion is not greater than the radius of the upper grinding disc; The height is 0.1-0.8mm.

Preferably, corresponding serrated protrusions are provided on the opposite surfaces of the upper grinding disc and the lower grinding disc.

Further, the power source includes a motor and a power shaft fixed at the center below the lower grinding table, and the lower end of the power shaft is correspondingly connected to the motor via a coupling.

Further, the medical drug grinding machine also includes a cylindrical shell, and the upper grinding disc, the lower grinding disc and the power source are all correspondingly arranged inside the cylindrical housing; The transverse connecting rod on the cylindrical shell, the upper grinding disc is fixed via two transverse connecting rods.

Further, a discharge opening is opened on the bottom side wall of the cylindrical shell, and a material introduction ramp is also provided at the discharge opening, and the material introduction ramp is arranged in an inclined shape.

A material guide plate is also arranged inside the cylindrical shell below the power source, and the material guide plate is set at an angle of 10°-45° to the horizontal direction; and the discharge port is arranged at the lower end of the material guide plate on the side wall.

Further, a vibrating motor is provided under the material guide plate, and a flexible anti-skid pad is provided at the bottom of the cylindrical shell.

Further, a transparent observation window is also opened on the side wall at the high end of the material guide plate.

Further, a feeding funnel is also arranged above the upper grinding table, and a filter screen is also arranged in the feeding funnel.

Further, the surface area of the upper grinding disc is smaller than that of the lower grinding disc; both the upper grinding disc and the lower grinding disc are made of stainless steel.

Compared with prior art, the beneficial effect of the present invention is:

1. By changing the mutual extrusion design of the traditional rollers, the present invention adopts the concept of mutual extrusion and rotation of the two grinding discs of this design, which can realize rapid grinding of granular objects; and the "upper grinding disc" mentioned in this design The vertical distance between the outer edge of the lower surface and the upper surface of the lower grinding disc is 0.2-1.0mm; the vertical distance between the inner edge of the lower surface of the upper grinding disc and the upper surface of the lower grinding disc is 5.0-20.0mm; " The purpose of the design is to form a certain angle a between the upper grinding disc and the lower grinding disc, so that the material can enter the gap between the two grinding discs from the center, and then realize the grinding process with slight to large extrusion force.

2. The present invention uses a motor as a power source, which has the advantages of energy saving, easy implementation, time saving and labor saving.

3. The present invention can conveniently pour out the ground material through the designed discharge port. Further, the designed material guide plate can guide the ground material to the discharge port, which is convenient for subsequent discharge. material.

4. The vibration motor designed in the present invention cooperates with the material guide plate, which is more conducive to the unloading of the material.

5. The flexible anti-slip mat designed by the present invention can improve the overall stability of the medical drug grinding machine when it is working.

6. Both the lower grinding disc and the lower grinding disc designed by the present invention are made of stainless steel, which has the advantages of high strength and long service life.

7. In the present invention, at least one strip-shaped protrusion is also provided on the upper surface of the lower grinding disc along its radial direction, and the length of the strip-shaped protrusion is not greater than the radius of the upper grinding disc; or between the upper grinding disc and the lower grinding disc Corresponding serrated protrusions are provided on the opposite surface of the grinding wheel, which can significantly improve the grinding efficiency, and its structure has the advantages of easy manufacturing, low cost, and easy use.

Description of drawings

Fig. 1 is a partial sectional structural schematic diagram of a medical drug grinding machine of the present invention;

Fig. 2 is a schematic diagram illustrating the mutual arrangement angles of the upper millstone and the lower millstone in the medical drug grinder of the present invention;

3 is a schematic cross-sectional view of the main structure of the lower grinding disc in the medical drug grinding machine of the present invention;

In the figure: 1. Cylindrical shell; 2. Feed funnel; 3. Upper grinding disc; 4. Lower grinding disc; Material guide plate; 10. Vibration motor; 11. Material outlet; 12. Filter screen; 13. Material guide ramp; 14. Transparent observation window; 15. Transverse connecting rod.

specific implementation plan

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Embodiment 1: A kind of medical drug grinder, see Fig. 1 to Fig. 3; It comprises fixed upper millstone 3, lower millstone 4 and the power source that is used to drive described lower millstone to rotate; Said power source comprises motor 8. The power shaft 7 fixed at the center position below the lower grinding table, the lower end of the power shaft 7 is correspondingly connected with the motor 8 via a coupling; the lower surface of the upper grinding table 3 is an umbrella-shaped structure; The upper surface of the grinding disc 4 is an umbrella structure matched with the lower surface of the upper grinding disc 3; the upper surface of the lower grinding disc 4 and the lower surface of the upper grinding disc 3 are arranged oppositely, and The center is located on the same vertical line; and a feed inlet 6 is also provided at the center of the upper grinding disc; the vertical distance between the outer edge of the lower surface of the upper grinding disc 3 and the upper surface of the lower grinding disc 4 is 0.2-1.0 mm; the vertical distance between the inner edge of the lower surface of the upper grinding disc 3 and the upper surface of the lower grinding disc 4 is 5.0-20.0 mm; the purpose of this design is to form a certain angle a between the upper grinding disc and the lower grinding disc , so that the material can enter the gap between the two grinding discs from the center, and then realize the grinding process with slight to large extrusion force. In order to improve its grinding effect, a plurality of strip-shaped protrusions 5 are also arranged on the upper surface of the lower grinding disc 4 along its radial direction, and the length of the strip-shaped protrusions 5 should not be greater than the radius of the upper grinding disc 3 ; At the same time, the height of the strip-shaped protrusion 5 is 0.1-0.8mm, and the strip-shaped protrusion 5 can increase the friction between the material and the grinding disc, providing favorable conditions for better grinding treatment. Alternatively, corresponding serrated protrusions are provided on the opposite surfaces of the upper grinding disc 3 and the lower grinding disc 4, which can also increase the friction between the material and the grinding disc.

Further, this design changes the traditional design of mutual extrusion of rollers, and adopts the concept of mutual extrusion and rotation of two grinding discs in this design, which can realize rapid grinding of granular objects; during work, the materials pass through The feed port 6 enters the gap between the upper grinding disc 3 and the lower grinding disc 4, and the material is ground through the rotation of the lower grinding disc.

Further, in order to improve the integrity and stability of the medical drug grinding machine, the medical drug grinding machine also includes a cylindrical shell 1, and further, the upper grinding disc 3, the lower grinding disc 4 and the power source are all correspondingly arranged on the The inside of the cylindrical shell 1; at the same time, two transverse connecting rods 15 fixed on the cylindrical shell 1 are also arranged above the upper grinding disc 3, and the upper grinding disc 3 is fixed via two transverse connecting rods 15; At the same time, a discharge port 11 is provided on the bottom side wall of the cylindrical shell 1, and the material after grinding can be easily poured out by the discharge port 11; a material is also arranged inside the cylindrical shell below the power source Material guide plate 9, the material guide plate 9 is set in an inclined state, that is, it is set at an angle of 10°-45° with the horizontal direction; and the discharge port 11 is arranged on the side wall at the low end of the material guide plate 9, The material guide plate 9 can guide the ground material to the discharge port 11 to facilitate subsequent discharge. A vibrating motor 10 is also arranged below the material guiding plate 9, and the cooperation of the vibrating motor 10 and the material guiding plate 9 is more conducive to the unloading of the material. And a flexible anti-slip pad is also provided at the bottom of the cylindrical shell 1; when the medical drug grinding machine is working, its overall stability can be improved. Further, a transparent observation window 14 is also provided on the side wall at the high end of the material guide plate 9, through which the situation of the material after grinding inside the cylindrical shell can be observed; at the same time, for the convenience of discharging , a feed ramp 13 is also provided at the discharge port; meanwhile, for the convenience of feeding, a feed funnel 2 is also provided above the upper millstone 3, and a feed funnel 2 is also provided in the feed funnel 2. The filter screen 12, the filter screen can filter out the larger material of the block, avoiding damage to the two grinding discs; more preferably, the surface area of the upper grinding disc 3 is smaller than the surface area of the lower grinding disc 4; meanwhile, the upper grinding disc 3 and the The lower grinding discs 4 are all made of stainless steel, so that the medical drug grinding machine has the advantages of high strength and long service life. In addition to the above-mentioned advantages, the present invention also has the advantages of high grinding efficiency, easy-to-manufacture structure, low cost, and convenient use.

The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. Those skilled in the art can easily comprehend the spirit of the present invention based on the above-mentioned embodiments, and make different extensions and changes. But as long as it does not deviate from the spirit of the present invention, it is within the protection scope of the present invention.

Claims (2)

1. A medical drug grinder, comprising a fixed upper grinding disc (3), a lower grinding disc (4) and a power source for driving the rotation of the lower grinding disc; the lower surface of the upper grinding disc (3) is an umbrella shaped structure; the upper surface of the lower grinding disc (4) is an umbrella-shaped structure matched with the lower surface of the upper grinding disc (3); the upper surface of the lower grinding disc (4) and the lower surface of the upper grinding disc (3) set facing each other, and the centers of the upper millstone (3) and the lower millstone (4) are located on the same vertical line; and a feed inlet (6) is opened at the center of the upper millstone; it is characterized in that: it also includes a cylindrical The shell (1), the upper millstone (3), the lower millstone (4) and the power source are all correspondingly arranged inside the cylindrical shell (1); the outer edge distance of the lower surface of the upper millstone (3) The vertical distance of the upper surface of the lower millstone (4) is 0.2-1.0mm; the vertical distance of the inner edge of the lower surface of the upper millstone (3) from the upper surface of the lower millstone (4) is 5.0-20.0mm. Two transverse connecting rods (15) fixed on the cylindrical casing (1) are arranged above the above-mentioned grinding disc (3), and the upper grinding disc (3) is fixed via two transverse connecting rods (15); Corresponding serrated protrusions are provided on the opposite lower surface and the upper surface of the upper grinding disc (3) and the lower grinding disc (4), or along the upper surface of the lower grinding disc (4). At least one strip-shaped protrusion (5) is provided in the radial direction, the length of the strip-shaped protrusion (5) is not greater than the radius of the upper grinding disc (3), and the height of the strip-shaped protrusion (5) 0.1-0.8mm; the power source includes a motor (8), a power shaft (7) fixed at the center position below the lower grinding disc (4), and the lower end of the power shaft (7) is connected to the The motor (8) is correspondingly connected; a material guide plate (9) is arranged inside the cylindrical shell below the power source, and the material guide plate (9) is set at an angle of 10°-45° to the horizontal direction. A vibrating motor (10) is provided below the material guide plate (9); a feed funnel (2) is provided above the upper grinding disc (3), and a filter is provided in the feed funnel (2). Net (12); the surface area of the upper millstone (3) is less than the surface area of the lower millstone (4), and the material enters the gap between the upper millstone (3) and the lower millstone (4) through the feed port (6), and The material is ground through the rotation of the lower grinding disc (4). 2. The medical drug grinding machine according to claim 1, characterized in that: a discharge port (11) is provided on the bottom side wall of the cylindrical shell (1), and at the discharge port (11) A material introduction ramp (13) is provided, and the material introduction ramp (13) is arranged in an inclined shape; the discharge port (11) is arranged on the cylindrical shell (1) at the lower end of the material introduction plate (9) on the side wall of the cylindrical housing (1); and a flexible non-slip pad is provided at the bottom of the cylindrical housing (1); a transparent Observation window (14).