JPH0144097B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a hospital-use crusher for disposable syringes and the like made of synthetic resin.

``Prior art'' Conventionally, impact crushers such as impeller breakers use a striking plate to impact the repulsion plate with centrifugal force to crush the target, and adjust the gap between the striking plate and the repulsion plate to achieve the desired crushing. However, since a total gap between the height of the striking plate and the above-mentioned gap was created between the striking plates, and the particles passed through the total gap without being crushed, about 40% of the particles were generated with a particle size larger than the target particle size. Therefore, it was necessary to separate this oversized material with a screen and crush it repeatedly. Furthermore, it is difficult to crush viscous materials such as hard or soft plastics, injection needles, etc.

``Problems to be Solved by the Invention'' The present invention aims to rapidly crush viscous substances such as hard or soft plastics, pieces of wood, thin iron pieces, etc. to the desired particle size in addition to conventional materials to be crushed by impact. purpose.

"Means for Solving the Problems" The present invention includes a rotary cylinder that is pivotally supported inside a machine casing, a shearing blade protruding from the outer periphery of the cylinder, and a receiving blade corresponding to the shearing blade on the inner surface of the machine casing. In a crusher having an input port provided at the upper part of the machine casing and a discharge port provided at the lower part, the shearing blade and the receiving blade are formed in the shape of concave and convex teeth that engage male and female with each other, and A crusher such as a syringe is constructed in which a concave blade surface of the shearing blade slightly protrudes from the outer peripheral surface of the cylinder, and a convex blade surface of the receiving blade is slidably in contact with the concave blade surface.

"Operation" Therefore, when the rotating cylinder 2 is rotated in a certain direction (arrow a) around the rotating shaft 9, the convex blade surface 19 of the shearing blade 3
is in contact with the concave blade surface 20 of the receiving blade 4, and the concave blade surface 7 of the shearing blade 3 is in contact with the convex blade surface 8 of the receiving blade 4 and slides therethrough.
There is a slight gap t between the convex blade surface 8 of the receiving blade 4 and the outer peripheral surface of the rotating cylinder 2, and the gap t is equal to the protruding height of the concave blade surface 7 of the shearing blade 3.
The object to be crushed is brought into the machine casing 1 by the receiving blade 4.
and is shredded (sheared) by the male and female fitting unevenness of the shearing blade 3 and the receiving blade 4, falling through the recess of the receiving blade 4 and the gap t, and is discharged from the discharge port 6.

``Example'' A horizontal rotating shaft 9 is mounted inside a machine casing 1 which has an input port 5 at the upper end and an outlet port 6 at the lower end.
The rotary cylinder 2 is fixed in the rotational direction by a key 10, and fixed in contact with the inner wall surface at both ends of the machine casing 1 in the sliding direction. This rotating cylinder 2 rotates to the right in Figure 1 (in the direction of arrow a in Figures 4 and 6), and has shear blades 3 protruding from the outer peripheral surface of the cylinder 2 as shown in Figures 2 and 4. do. Further, a receiving blade 4 corresponding to the shearing blade 3 is provided protruding from the inner surface of the machine casing 1. The number of shear blades 3 is the first
As shown in FIG. 7 and FIG. 8, an appropriate number of them are provided, but one may also be used. Also, it is better to have two receiving blades 4, but one may also be used. The shearing blade 3 and its receiver blade 4 thus constructed are formed in the shape of concave and convex teeth that fit into each other (see FIGS. 2, 3, and 4). The concave blade surface 7 of the shearing blade 3 slightly protrudes from the outer peripheral surface of the cylinder 2, and the convex blade surface 7 of the receiving blade 4 is attached to the concave blade surface 7.
are slidably in contact with each other along the cutting edge trajectory b. Therefore, a slight gap t is formed between the convex blade surface 8 and the outer peripheral surface of the cylinder 2, and the gap t is equal to the height from the outer peripheral surface to the concave blade surface 7, as shown in FIG. The outer diameter of the head 12 of the injection needle 11 is smaller than the outer diameter of the head 12 of the injection needle 11. In the figure, 13 indicates a drive motor, 14 indicates a pulley installed on the output shaft of the motor 13,
15 is a pulley provided on the rotating shaft 9, 16 is both pulleys 1
4 and 15 are driving belts, 17 is a feeder for crushed materials, and 18 is an outer box.

``Effects'' Since the present invention is constructed as described above, there is no risk that crushed objects larger than the above-mentioned slight gap t will pass through the gap t and be discharged, and the gap t can be formed small, and the male and female fitting unevenness The tooth-shaped shearing blade 3 and receiving blade 4 can shred viscous substances such as hard or soft plastics such as syringes, thin iron pieces, etc., and remove them from the recess of the receiving blade 4 and the above-mentioned gap t. It can be lowered into the discharge port 6 to shear and crush the original shape of small objects to be crushed, and the crushing efficiency can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is a front view showing a crusher for syringes, etc. of the present invention, FIG. 2 is a plan view taken along line A-A in FIG. 1, and FIG.
The figures are a plan view taken along line B-B in Figure 1, Figure 4 is a perspective view of the shearing blade and receiving blade, Figure 5 is a perspective view of the receiving blade, Figure 6 is an enlarged front view of the crushed state, and Figure 7. 8 are a front view of another embodiment of FIG. 1, FIG. 9 is an overall view of the crusher, and FIG. 10 is a side view of FIG. 9. DESCRIPTION OF SYMBOLS 1... Machine housing, 2... Rotating cylinder, 3... Shearing blade, 4... Receiving blade, 5... Inlet port, 6... Outlet port, 7... Concave blade surface, 8...
Convex blade surface, t...gap.

Claims (1)

[Claims] 1 A rotating cylinder is pivotally supported inside the machine casing, a shearing blade is protruded from the outer periphery of the cylinder, and a receiving blade corresponding to the shearing blade is protruded from the inner surface of the machine casing. In a crusher having an input port and a discharge port at the bottom, the shear blade and receiving blade are formed into a concave and convex tooth shape that engages male and female with each other, and the concave blade surface of the shear blade is formed on the outer periphery of the cylinder. A crusher such as a syringe, which has a convex blade surface of the receiving blade that protrudes slightly from the surface and is slidably in contact with the concave blade surface.