A brittle instrument

Abstract

The invention discloses a fragility instrument, including a housing with a built-in rotating device, a cylinder driven by the rotating device is provided on both the left and right sides of the housing, the cylinder is provided with an open outer side surface, an arc-shaped spacer is fixedly provided on the inner side surface of the cylinder, the arc-shaped spacer extends from the center of the cylinder to the inner peripheral wall of the cylinder, and the arc-shaped spacer is provided with a plurality of mutually aligned mounting holes along the extension direction; the fragility instrument also includes a baffle, the bottom of the baffle is provided with a connecting portion matched with the mounting hole, the baffle is detachably connected to the concave arc surface of the arc-shaped spacer, and the width of the baffle is not less than the width of the arc-shaped spacer. Compared with the prior art, the user only needs to change the position of the baffle to change the falling height and initial falling velocity of the tablet, so that the invention can better simulate different transportation conditions of the tablet and improve the applicability of the invention.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical equipment, in particular to a fragility instrument. Background Art

[0002] According to the 2015 edition of the Chinese Pharmacopoeia, the tablet friability test is used to test the friability and other physical strength of non-coated tablets, which is a simulation of the tablets during transportation. The general test method is to put a certain number of tablets on paper, weigh them, and then put them into the cylinder of the friability tester to conduct a friability test. After the test, pour the tablets and crushed powder in the cylinder onto the paper, send them to the sieve, sieve out the crushed powder, and pour the remaining tablets into the paper and weigh them. The weight loss of the tablets shall not exceed 1%, and there shall be no breakage, cracking or crushing.

[0003] Since the falling height and initial falling velocity of the tablets in the existing fragility analyzer are fixed, the existing technology cannot accurately simulate different transportation conditions of the tablets. Summary of the invention

[0004] The technical problem to be solved by the invention is to provide a fragility instrument which can change the falling height and initial falling velocity of a tablet.

[0005] The solution to the technical problem created by the present invention is:

[0006] A fragility instrument comprises a casing with a built-in rotating device, wherein a cylinder driven by the rotating device is provided on both the left and right sides of the casing, the cylinder is provided with an open outer side surface, an arc-shaped spacer is fixedly provided on the inner side surface of the cylinder, the arc-shaped spacer extends from the center of the cylinder to the inner circumferential wall of the cylinder, and the arc-shaped spacer is provided with a plurality of mutually aligned mounting holes along the extension direction; the fragility instrument also comprises a baffle, the bottom of the baffle is provided with a connecting portion matching the mounting hole, the baffle is detachably connected to the concave arc surface of the arc-shaped spacer, and the width of the baffle is not less than the width of the arc-shaped spacer.

[0007] Furthermore, all vacant mounting holes are provided with first hole plugs.

[0008] Furthermore, the connecting portion includes a screw rod and a nut matched with the screw rod, and the screw rod passes through the mounting hole.

[0009] Furthermore, the cylinder, the arc-shaped spacer and the baffle are all made of transparent plastic.

[0010] Furthermore, a through hole is provided on the peripheral wall of the cylinder.

[0011] In addition, the through hole is located beside the convex arc surface of the arc-shaped spacer.

[0012] In addition, a second hole plug is provided on the through hole.

[0013] Furthermore, at least two of the cylinders are disposed on both the left and right sides of the housing, and all the cylinders on the same side are arranged side by side.

[0014] The beneficial effect of the invention is that since the invention is provided with a baffle, when the cylinder containing the tablets rotates, all the tablets gather on the outside of the baffle when falling. Compared with the prior art, the user only needs to change the position of the baffle to change the falling height and initial falling velocity of the tablets, so that the invention can better simulate different transportation conditions of the tablets and improve the applicability of the invention. The invention is used to detect the friability of tablets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0016] Figure 1 A three-dimensional schematic diagram of an embodiment of the fragility instrument provided by the present invention;

[0017] Figure 2 Another three-dimensional schematic diagram of an embodiment of the fragility instrument provided by the present invention;

[0018] Figure 3 A front view of an embodiment of the fragility instrument provided by the present invention;

[0019] Figure 4 A left side view of an embodiment of the fragility instrument provided by the present invention;

[0020] Figure 5 A front view of another embodiment of the fragility instrument provided by the present invention.

[0021] In the accompanying drawings: 100 - housing, 200 - cylinder, 101 - shaft, 300 - arc-shaped spacer, 210 - central axis, 310 - mounting hole, 400 - baffle, 410 - connecting part, 110 - switch, 120 - control panel, 220 - through hole. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the invention, so as to fully understand the purpose, characteristics and effects of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, other embodiments obtained by technicians in this field without creative work belong to the scope of protection of the invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other. Finally, it should be noted that the orientation or position relationship indicated by the terms "center, top, bottom, left, right, vertical, horizontal, inside, outside" in the text is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first, second, third" herein are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0023] Figures 1 to 4 What is shown is an embodiment of a fragility instrument, including a housing 100 with a built-in rotating device (not shown in the drawings). Since the rotating device is no different from the rotating device in the prior art, the present invention will not describe the rotating device in detail. The left and right sides of the housing 100 are provided with a cylinder 200 driven by the rotating device. Specifically, a rotating shaft 101 on the rotating device is fixedly connected to the cylinder 200, so that the cylinder 200 rotates following the rotation of the rotating device. The cylinder 200 is provided with an open outer side surface, and an arc-shaped spacer 300 is fixedly provided on the inner side surface of the cylinder 200. The user can directly place the tablets from the outside on the concave arc-shaped surface of the arc-shaped spacer 300. The arc-shaped spacer 300 extends from the center of the circle of the cylinder 200 to the inner circumferential wall of the cylinder 200; specifically, a central axis 210 located at the center of the circle is fixedly provided on the inner side surface of the cylinder 200, one end of the arc-shaped spacer 300 is tangent to the central axis 210 and fixedly connected, and the cylinder 200 is provided with a rotation direction from the concave arc-shaped surface of the arc-shaped spacer 300 to the convex arc-shaped surface.

[0024] The arc-shaped spacer 300 is provided with a plurality of mutually aligned mounting holes 310 along the extension direction, and the fragility instrument further comprises a baffle 400, the bottom of the baffle 400 is provided with a connecting portion 410 matched with the mounting hole 310, and the baffle 400 is detachably connected to the concave arc surface of the arc-shaped spacer 300; specifically, the connecting portion 410 comprises a screw and a nut matched with the screw, the screw passes through the mounting hole 310, and the user only needs to screw the nut onto the screw to fix the baffle 400 to the arc-shaped spacer 300. In order to ensure that all tablets are gathered on the outside of the baffle 400 when falling, the width of the baffle 400 is not less than the width of the arc-shaped spacer 300, and specifically, the width of the baffle 400 is preferably consistent with the width of the arc-shaped spacer 300. In addition, according to the requirements of the 2015 edition of the Chinese Pharmacopoeia, the cylinder 200 and the arc-shaped partition 300 are both made of transparent plastic. Not only that, the baffle 400 is also made of transparent plastic, and the transparent plastic includes but is not limited to transparent PVC, transparent PS or transparent acrylic.

[0025] In addition, in order to prevent the tablets from passing through the mounting hole 310 or getting stuck in the mounting hole 310 and causing the mounting hole 310 to be blocked, all vacant mounting holes 310 are provided with a first hole plug (not shown in the drawings), which is specifically a plastic hole plug or a rubber hole plug.

[0026] It should be noted that, when the user removes the baffle 400 and blocks all the mounting holes 310, the invention can be used for conventional friability detection of tablets.

[0027] In addition, a switch 110 and two control panels 120 arranged on the left and right are provided on the front side of the housing 100. The control panel 120 is used to set the rotation parameters of the cylinder 200, and the switch 110 is used to control the opening and closing of the rotating device.

[0028] In other embodiments, a through hole 220 is provided on the peripheral wall of the cylinder 200, and the through hole 220 is used to pour out the tablets and crushed powder after the experiment, and the through hole 220 is specifically located beside the convex arc surface of the arc-shaped spacer 300. In actual experiments, since tablets will not gather at the position where the through hole 220 is located, when the through hole 220 is only used to pour out the tablets and crushed powder after the experiment, the user may not block the through hole 220.

[0029] like Figure 5As shown, in other embodiments, in order to improve the working efficiency of the invention, at least two cylinders 200 are provided on the left and right sides of the housing 100, and all cylinders 200 on the same side are arranged side by side; all cylinders 200 on the same side are fixedly connected by their respective central axes 210, so that the rotating device can drive all cylinders 200 on the left and right sides to rotate together. Although the invention does not limit the number of the cylinders 200, in order to ensure the stability of the invention, the number of the cylinders 200 is as little as possible not to exceed six, and the left and right cylinders 200 should be arranged symmetrically. In addition, when the number of cylinders 200 on the same side is two or more, in order to facilitate the placement of tablets in the cylinders 200, the through hole 220 can be used to put in the tablets; when the through hole 220 is used to put in the tablets, the through hole 220 is provided with a second hole plug (not shown in the drawings), and the second hole plug is specifically a plastic hole plug or a rubber hole plug.

[0030] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A fragility instrument, characterized in that: The invention comprises a housing (100) with a rotating device built therein, a cylinder (200) driven by the rotating device is provided on both left and right sides of the housing (100), the cylinder (200) is provided with an open outer side surface, a through hole (220) is provided on the peripheral wall of the cylinder (200), an arc-shaped spacer (300) is fixedly provided on the inner side surface of the cylinder (200), the arc-shaped spacer (300) extends from the center of the cylinder (200) to the inner peripheral wall of the cylinder (200), and the arc-shaped spacer (300) is provided along the inner side surface of the cylinder (200). A plurality of mutually aligned mounting holes (310) are provided in the extension direction; and a baffle (400) is also included. The cylinder (200), the arc-shaped spacer (300) and the baffle (400) are all made of transparent plastic. A connecting portion (410) matching and connected to the mounting hole (310) is provided at the bottom of the baffle (400). The baffle (400) is detachably connected to the concave arc surface of the arc-shaped spacer (300), and the width of the baffle (400) is not less than the width of the arc-shaped spacer (300).

2. A fragility instrument according to claim 1, characterized in that: All vacant mounting holes (310) are provided with first hole plugs.

3. A fragility instrument according to claim 1, characterized in that: The connecting portion (410) comprises a screw rod and a nut matched with the screw rod, and the screw rod passes through the mounting hole (310).

4. A fragility instrument according to claim 1, characterized in that: The through hole (220) is located beside the convex arc surface of the arc-shaped spacer (300).

5. A fragility instrument according to claim 1, characterized in that: The through hole (220) is provided with a second hole plug.

6. A fragility instrument according to claim 1, characterized in that: At least two cylinders (200) are disposed on both the left and right sides of the housing (100), and all the cylinders (200) located on the same side are arranged side by side.

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