Accurate measurement radioactive activity meter

Abstract

The utility model discloses a radioactive activity meter capable of accurately measuring, which relates to the technical field of activity meters and comprises an activity meter main body and an annular balance, the annular balance is arranged on the upper side of the activity meter main body, and a plurality of pressure sensors are fixedly arranged below the annular balance in an annular array distribution mode. The lower sides of the multiple pressure sensors are fixedly connected with the activity meter body, a containing frame is arranged in the middle of the activity meter body, a pressing plate is fixedly arranged at the upper end of the containing frame, and the pressing plate abuts against the upper surface of the annular balance; u-shaped blocks are fixedly arranged on the two sides of the upper end of the activity meter body, rotating rods are rotationally arranged on the inner sides of the U-shaped blocks, the rod walls of the rotating rods are fixedly sleeved with L-shaped rods, and arc-shaped baffles are fixedly arranged at the ends, away from the rotating rods, of the L-shaped rods. When the electronic scale is idle, the annular electronic scale can be shielded, and the influence of dust accumulated on the surface of the annular electronic scale on the weighing precision is prevented as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of activity meters, in particular to a meter for accurately measuring radioactivity. Background Art

[0002] Activity meter, also called radioactivity meter, is an instrument for measuring the activity of radioactive nuclides. It can be used for the precise measurement of radioactive rays.

[0003] Among them, the announcement number CN204515150U discloses a radioactivity meter. This technical solution can measure the mass of the radioactive drug in the tube in real time by setting a ring balance at the wellhead of the measuring well of the activity meter body, and then calculate the volume of the radioactive drug in the tube. According to the activity measured by the activity meter at this time, the radioactivity concentration of the radioactive drug in the tube is calculated in real time and accurately, and the activity of the transferred and packaged drug can be calculated by the product of the radioactivity concentration and the volume, thereby improving the accuracy of drug packaging. However, there are still defects in this technical solution:

[0004] In this technical solution, the annular balance is always exposed to the outside. When it is not used for a long time, dust is easily accumulated on the surface of the annular balance, resulting in inaccurate weighing, which in turn affects the weighing quality of the radioactive drug and reduces the accuracy of the measurement work. Utility Model Content

[0005] In view of the above problems existing in the existing radioactivity meter for accurate measurement, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a radioactivity meter for accurately measuring radioactivity, which solves the problem that the annular balance in the radioactivity meter for accurately measuring radioactivity in the prior art is always exposed to the outside, and when not used for a long time, dust is easily accumulated on the surface of the annular balance, resulting in inaccurate weighing, which in turn affects the inaccurate weighing quality of radioactive drugs and reduces the accuracy of the measurement work.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A radioactivity meter for accurate measurement, comprising an activity meter body and an annular balance, wherein the annular balance is arranged on the upper side of the activity meter body, a plurality of pressure sensors are fixedly arranged in an annular array below the annular balance, the lower sides of the plurality of pressure sensors are fixedly connected to the activity meter body, a containing frame is arranged in the middle of the activity meter body, a pressing plate is fixedly arranged on the upper end of the containing frame, and the pressing plate abuts against the upper surface of the annular balance;

[0009] U-shaped blocks are fixedly arranged on both sides of the upper end of the activity meter body, a rotating rod is rotatably arranged inside the U-shaped block, an L-shaped rod is fixedly sleeved on the rod wall of the rotating rod, and an arc-shaped baffle is fixedly arranged on one end of the L-shaped rod away from the rotating rod;

[0010] The outer wall of the activity meter body is movably sleeved with a movable ring, and the upper sides of both ends of the movable ring are provided with limit mechanisms for limiting the rotation of the rotating rod. The lower side of the movable ring is provided with a fixed ring, and the fixed ring is fixedly sleeved with the outer wall of the activity meter body. Support mechanisms for maintaining the stability of the movable ring are provided on both sides of the upper surface of the fixed ring.

[0011] Preferably, the limiting mechanism includes a limiting rod and a limiting tube, the two limiting tubes are fixedly arranged on the lower side of one end of the L-shaped rod away from the arc-shaped baffle, the two limiting rods are inserted into the corresponding limiting tubes, and the lower ends of the two limiting rods are fixedly connected to one side of the corresponding movable ring.

[0012] Preferably, the supporting mechanism includes a fixed tube and a movable rod, the two fixed tubes are fixedly arranged on both sides of the upper surface of the fixed ring, the two fixed tubes are slidably provided with stoppers inside, the two movable rods are fixedly arranged on the upper surfaces of the corresponding stoppers, the upper ends of the two movable rods extend to the outside of the fixed tube and are fixedly connected to one side of the corresponding movable ring, the lower surface of the stopper is fixedly arranged with a spring, and the other end of the spring is fixedly connected to the inner wall of the fixed tube.

[0013] Preferably, a torsion spring is movably sleeved on the rod wall of the rotating rod, and two ends of the torsion spring are respectively fixedly connected to the corresponding rotating rod and the inner wall of the U-shaped block.

[0014] Preferably, the cross sections of the fixing tube and the stopper are both rectangular.

[0015] Preferably, the size of the two arc-shaped baffles when combined is slightly larger than the size of the annular balance.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] The utility model pulls down the movable ring so that the movable ring drives the two limit rods to leave the corresponding limit tubes, that is, releases the limit on the two rotating rods, and under the elastic force of the torsion springs on both sides, the two rotating rods drive the corresponding L-shaped rods to rotate, so that the two L-shaped rods drive the corresponding arc-shaped baffles to rotate with the rotating rods as axes, until the two arc-shaped baffles are arranged on the upper side of the annular balance in an abutting state, that is, the annular balance can be shielded, and dust can be prevented from accumulating on the surface of the annular electronic balance and affecting the weighing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of a radioactivity meter for accurate measurement proposed by the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the local A part;

[0021] Figure 3 for Figure 1 A three-dimensional view of the middle curved baffle.

[0022] Description of reference numerals:

[0023] 1. Activity meter body; 2. Pressure sensor; 3. Ring balance; 4. Container rack; 5. Pressure plate; 6. L-shaped rod; 7. Arc baffle; 8. Fixed ring; 9. Movable ring; 10. U-shaped block; 11. Rotating rod; 12. Torsion spring; 13. Limit rod; 14. Limit tube; 15. Fixed tube; 16. Block; 17. Movable rod; 18. Spring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model embodiment discloses a meter for accurately measuring radioactivity.

[0026] Reference Figure 1-3 A radioactivity meter for accurately measuring radioactivity comprises an activity meter body 1 and an annular balance 3, the annular balance 3 is arranged on the upper side of the activity meter body 1, a plurality of pressure sensors 2 are fixedly arranged in an annular array below the annular balance 3, the lower sides of the plurality of pressure sensors 2 are fixedly connected to the activity meter body 1, a loading rack 4 is arranged in the middle of the activity meter body 1, a pressing plate 5 is fixedly arranged on the upper end of the loading rack 4, and the pressing plate 5 is in conflict with the upper surface of the annular balance 3;

[0027] U-shaped blocks 10 are fixedly arranged on both sides of the upper end of the activity meter body 1, and a rotating rod 11 is rotatably arranged inside the U-shaped block 10. An L-shaped rod 6 is fixedly sleeved on the rod wall of the rotating rod 11, and an arc-shaped baffle 7 is fixedly arranged on one end of the L-shaped rod 6 away from the rotating rod 11. The size of the two arc-shaped baffles 7 when combined is slightly larger than the size of the annular balance 3, and the annular balance 3 can be fully shielded;

[0028] A movable ring 9 is movably sleeved on the outer wall of the activity meter body 1 , and a fixed ring 8 is arranged on the lower side of the movable ring 9 . The fixed ring 8 is fixedly sleeved on the outer wall of the activity meter body 1 .

[0029] Embodiment 2

[0030] Reference Figure 1-3 A limiting mechanism for limiting the rotation of the rotating rod 11 is arranged on the upper sides of both ends of the movable ring 9, and the limiting mechanism includes a limiting rod 13 and a limiting tube 14. The two limiting tubes 14 are fixedly arranged on the lower side of one end of the L-shaped rod 6 away from the arc-shaped baffle 7. The two limiting rods 13 are inserted into the corresponding limiting tubes 14, and the lower ends of the two limiting rods 13 are fixedly connected to one side of the corresponding movable ring 9.

[0031] Embodiment 3

[0032] Reference Figure 1-3 , support mechanisms for maintaining the stability of the movable ring 9 are arranged on both sides of the upper surface of the fixed ring 8, and the support mechanisms include a fixed tube 15 and a movable rod 17. The two fixed tubes 15 are fixedly arranged on both sides of the upper surface of the fixed ring 8, and blocks 16 are slidably arranged inside the two fixed tubes 15. Two movable rods 17 are fixedly arranged on the upper surfaces of the corresponding blocks 16. The upper ends of the two movable rods 17 extend to the outside of the fixed tubes 15 and are fixedly connected to one side of the corresponding movable ring 9. A spring 18 is fixedly arranged on the lower surface of the block 16, and the other end of the spring 18 is fixedly connected to the inner wall of the fixed tube 15. The cross-sections of the fixed tube 15 and the block 16 are both rectangular, so that the block 16 can slide stably.

[0033] Embodiment 4

[0034] Reference Figure 1-3 The rod wall of the rotating rod 11 is movably sleeved with a torsion spring 12, and the two ends of the torsion spring 12 are fixedly connected to the corresponding rotating rod 11 and the inner wall of the U-shaped block 10 respectively. In a natural state, the elastic force of the torsion spring 12 will cause the rotating rod 11 to drive the L-shaped rod 6 to rotate toward the side close to the annular balance 3.

[0035] In the utility model, when in use, the movable ring 9 is pulled down, so that the movable ring 9 drives the two limit rods 13 to leave the corresponding limit tubes 14, that is, the limit on the two rotating rods 11 is released, and under the elastic force of the torsion springs 12 on both sides, the two rotating rods 11 drive the corresponding L-shaped rods 6 to rotate, so that the two L-shaped rods 6 drive the corresponding arc-shaped baffles 7 to rotate with the rotating rods 11 as the axis, until the two arc-shaped baffles 7 are arranged on the upper side of the annular balance 3 in an abutting state, that is, the annular balance 3 can be shielded, and dust can be prevented from accumulating on the surface of the annular electronic balance 3 and affecting the weighing accuracy.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A radioactivity meter for accurately measuring radioactivity, comprising a meter body (1) and a ring balance (3), characterized in that: The annular balance (3) is arranged on the upper side of the activity meter body (1); a plurality of pressure sensors (2) are fixedly arranged in an annular array below the annular balance (3); the lower sides of the plurality of pressure sensors (2) are fixedly connected to the activity meter body (1); a loading frame (4) is arranged in the middle of the activity meter body (1); a pressure plate (5) is fixedly arranged at the upper end of the loading frame (4); the pressure plate (5) contacts the upper surface of the annular balance (3); U-shaped blocks (10) are fixedly arranged on both sides of the upper end of the activity meter body (1), a rotating rod (11) is rotatably arranged inside the U-shaped block (10), an L-shaped rod (6) is fixedly sleeved on the rod wall of the rotating rod (11), and an arc-shaped baffle (7) is fixedly arranged on one end of the L-shaped rod (6) away from the rotating rod (11); The outer wall of the activity meter body (1) is movably sleeved with a movable ring (9), and the upper sides of both ends of the movable ring (9) are provided with limit mechanisms for limiting the rotation of the rotating rod (11), and the lower side of the movable ring (9) is provided with a fixed ring (8), and the fixed ring (8) is fixedly sleeved with the outer wall of the activity meter body (1), and the upper surface of the fixed ring (8) is provided with support mechanisms for maintaining the stability of the movable ring (9) on both sides.

2. The radioactivity meter according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (13) and a limiting tube (14), wherein the two limiting tubes (14) are fixedly arranged on the lower side of one end of the L-shaped rod (6) away from the arc-shaped baffle (7), the two limiting rods (13) are inserted into the inside of the corresponding limiting tubes (14), and the lower ends of the two limiting rods (13) are fixedly connected to one side of the corresponding movable ring (9).

3. The radioactivity meter according to claim 1, characterized in that: The support mechanism comprises a fixed tube (15) and a movable rod (17), wherein the two fixed tubes (15) are fixedly arranged on both sides of the upper surface of the fixed ring (8), and the insides of the two fixed tubes (15) are slidably provided with a stopper (16), and the two movable rods (17) are fixedly arranged on the upper surface of the corresponding stopper (16), and the upper ends of the two movable rods (17) extend to the outside of the fixed tube (15) and are fixedly connected to one side of the corresponding movable ring (9), and the lower surface of the stopper (16) is fixedly arranged with a spring (18), and the other end of the spring (18) is fixedly connected to the inner wall of the fixed tube (15).

4. The radioactivity meter for accurate measurement according to claim 1, characterized in that: A torsion spring (12) is movably sleeved on the rod wall of the rotating rod (11), and two ends of the torsion spring (12) are respectively fixedly connected to the corresponding rotating rod (11) and the inner wall of the U-shaped block (10).

5. The radioactivity meter for accurate measurement according to claim 3, characterized in that: The cross sections of the fixing tube (15) and the stopper (16) are both rectangular.

6. The radioactivity meter for accurate measurement according to claim 1, characterized in that: The size of the two arc-shaped baffles (7) when combined is slightly larger than the size of the annular balance (3).

Images