CN215449613U - Light-resistant scintillation liquid counting bottle sampling device - Google Patents

Abstract

The utility model discloses a light-resistant scintillation liquid counting bottle sample introduction device which comprises a shell, wherein a light-resistant cover used for sealing a measurement cavity is arranged at the top of the shell, a sample moving mechanism is arranged on the shell, a clamping piece is arranged at the bottom of the light-resistant cover, and the sample moving mechanism comprises a lifting jacking mechanism, a lifting block, a pressure bar assembly, a locking device used for locking the pressure bar assembly and a reset guide mechanism used for resetting the lifting block upwards, wherein the lifting jacking mechanism extends into the measurement cavity and is used for supporting a scintillation liquid counting bottle. The light-shading cover is prevented from being separated from the shell due to shaking of the device in the sample detection process by arranging the clamping piece, and meanwhile, the position of the pressure rod assembly is locked by arranging the locking device, so that the scintillation liquid counting bottle in the measurement process is prevented from moving, the sample is lofted and shaded by a purely physical mechanical structure, the mechanical structure is compact and strong in reliability, the anti-seismic effect is good, and the reliability and the environmental adaptability of the product are improved by purely physical mechanical transmission.

Description

Light-resistant scintillation liquid counting bottle sampling device

Technical Field

The utility model belongs to the technical field of liquid scintillation measurement, and particularly relates to a light-resistant scintillation liquid counting bottle sample introduction device.

Background

The liquid scintillation counter mainly comprises a measuring system, a light-shading system and a data processing system, and due to the characteristics of the instrument, visible light, cosmic rays and chemiluminescence can cause measurement result errors and even damage to instrument components. Most of the previous instruments are used in hospitals and laboratories, the sample size is large, automatic sample transportation and automatic measurement are needed, a light-shading system is generally electrically driven, and the instrument size is large. However, when the radioactivity measurement is carried out in a field environment, the used equipment is portable, the sample amount is small, the requirement for real-time measurement is met, the required instrument is small in size, stable in working and good in anti-seismic performance, and manual lofting rapid measurement can be achieved.

Due to the characteristics of the using environment and instruments, the existing measuring instruments on the market cannot be directly used. Therefore, there is a need for a liquid scintillation counting device capable of measuring manual lofting in real time to ensure the light-shielding state of the measurement chamber during measurement and during the lofting process.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a light-shading type scintillation liquid counting bottle sample introduction device aiming at the defects in the prior art, the light-shading type scintillation liquid counting bottle sample introduction device is simple in structure, reasonable in design and strong in practicability, the light shading performance of a light-shading cover is guaranteed through the arrangement of a clamping piece, the light-shading cover is prevented from being separated from a shell due to equipment shaking in the sample detection process, meanwhile, the position of a pressure rod assembly is locked through the arrangement of a locking device, the scintillation liquid counting bottle in the measurement process is prevented from moving, the sample is placed and shaded through a purely physical mechanical structure, the mechanical structure is compact, the reliability is strong, the anti-seismic effect is good, and the reliability and the environmental adaptability of a product are improved through purely physical mechanical transmission.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a light-resistant type scintillation liquid count bottle sampling device which characterized in that: the liquid scintillation counter comprises a detection lead chamber, a light guide and two photomultiplier tubes, wherein the light guide is arranged in the detection lead chamber, the photomultiplier tubes are arranged on two sides of the light guide, a measurement chamber with an opening at the top is arranged in the detection lead chamber, the measurement chamber penetrates through the light guide, a light-resistant cover for sealing the measurement chamber is arranged at the top of the shell, a sample moving mechanism for controlling a scintillation liquid counting bottle to move in the measurement chamber is arranged on the shell, and a clamping piece inserted into the shell is arranged at the bottom of the light-resistant cover;

the sample moving mechanism comprises a lifting jacking mechanism, a lifting block, a pressure rod assembly, a locking device and a reset guide mechanism, wherein the lifting jacking mechanism extends into the measuring chamber and is used for supporting a scintillation liquid counting bottle;

the shell is provided with a top panel for mounting the light-shielding cover and an inclined side panel for mounting the pressure bar assembly, the top of the inclined side panel is connected with the top panel, and the inclined side panel inclines towards the direction far away from the detection lead chamber;

the depression bar subassembly is including installing the installation panel on oblique side board, setting up at the inboard guide rail of installation panel and stretching into to the installation panel in and along the gliding horizontal depression bar from top to bottom of guide rail, the axis and the oblique side board of guide rail are parallel, and the one end that horizontal depression bar is close to the installation panel is fixed and is provided with the handle, and outside the handle passed the installation panel and stretches out to oblique side board, the central line perpendicular to installation panel of handle offered the direction rectangular hole that supplies the handle to slide on the installation panel.

Foretell light-resistant type scintillation liquid count bottle sampling device which characterized in that: locking device establishes locking spring and installation sleeve pipe on the handle including the cover, and the installation sleeve pipe stretches into in the installation panel and compresses tightly locking spring on the horizontal depression bar of handle bottom, and the installation sleeve pipe stretches into the pot head in the installation panel and is equipped with the butt at the inboard first snap ring of installation panel and sets up the second snap ring of keeping away from installation panel one side at first snap ring, and the external diameter of first snap ring is greater than the width in direction rectangular hole, and the external diameter of second snap ring is greater than the external diameter of first snap ring, set up the locking hole with direction rectangular hole intercommunication on the installation panel, the locking hole is seted up in the bottom in direction rectangular hole, and the aperture in locking hole is greater than the external diameter of first snap ring and is less than the external diameter of second snap ring.

Foretell light-resistant type scintillation liquid count bottle sampling device which characterized in that: the lifting block comprises a rail sliding plate for horizontal movement of the horizontal pressing rod and guide post mounting seats which are arranged at two ends of the rail sliding plate and used for mounting the reset guide mechanism.

Foretell light-resistant type scintillation liquid count bottle sampling device which characterized in that: the top panel is provided with a through hole matched with the light-resistant cover and a groove for the clamping piece to penetrate through, and the groove is communicated with the through hole.

Foretell light-resistant type scintillation liquid count bottle sampling device which characterized in that: the reset guide mechanism comprises a guide post penetrating through the guide post mounting seat and a first reset spring which is sleeved on the guide post at the lower part of the guide post mounting seat and used for resetting upwards the lifting block.

Foretell light-resistant type scintillation liquid count bottle sampling device which characterized in that: the lift jacking mechanism is including stretching into to measuring the ejector pin in the cavity, setting up at the ejector pin top be used for bearing scintillation liquid count bottle hold the seat and be used for connecting the ejector pin with the connecting rod of elevator, the bearing seat top is provided with the sealing ring, and the cover is equipped with second reset spring on the ejector pin.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the clamping piece is arranged and rotates after the light-shading cover is inserted into the shell, so that the clamping piece is clamped with the inner wall of the shell, the light-shading cover is prevented from being separated from the shell due to equipment shaking in the sample detection process, and the light shading performance of the measurement cavity in the detection process is ensured, thereby ensuring the accuracy of the detection result, and the device has a simple structure and a good use effect.

2. According to the utility model, the pressing rod assembly is arranged outside the shell to drive the scintillation liquid counting bottle in the shell to advance and retreat, so that complex operation in the measuring cavity is avoided, and the light-shielding effect in the measuring cavity is easier to ensure.

3. According to the utility model, the lifting block is arranged to connect the pressure bar assembly and the lifting jacking mechanism, the pure physical mechanical structure realizes sample lofting and light shielding, the mechanical structure is compact, the reliability is strong, the anti-seismic effect is good, and the reliability and the environmental adaptability of the product are improved through pure physical mechanical transmission.

4. According to the utility model, the position of the pressure rod assembly is locked by the locking device, and the pressure rod assembly is locked by the locking device after the pressure rod assembly drives the scintillation liquid counting bottle to sample, so that the scintillation liquid counting bottle is prevented from moving, manual control is not required, the reliability is high, and the anti-seismic effect is good.

In conclusion, the device has the advantages of simple structure, reasonable design and strong practicability, the light-shielding property of the light-shielding cover is ensured by arranging the clamping piece, the light-shielding cover is prevented from being separated from the shell due to the shaking of equipment in the sample detection process, meanwhile, the position of the pressure rod assembly is locked by arranging the locking device, the scintillation liquid counting bottle is prevented from moving in the measurement process, the sample is lofted and shielded from light by a purely physical mechanical structure, the mechanical structure is compact, the reliability is strong, the anti-seismic effect is good, and the reliability and the environmental adaptability of the product are improved by purely physical mechanical transmission.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 with the top and diagonal side panels removed.

Fig. 3 is a left side view of the present invention.

FIG. 4 is a schematic view of the installation relationship of the strut assembly and the locking device of the present invention.

Fig. 5 is an enlarged view of fig. 2 at a.

Fig. 6 is an enlarged view of fig. 3 at B.

Description of reference numerals:

1-detecting lead chamber; 2-a light guide; 3-a measurement chamber;

4-light-proof cover; 5-scintillation liquid counting bottle; 6-clamping piece;

7-rotating the limiting block; 8-a top panel; 9-oblique side panels;

10-mounting a panel; 11-a guide rail; 12-a horizontal compression bar;

13-a handle; 14-guiding the elongated hole; 15-a display screen;

16-deep groove ball bearings; 17-a locking spring; 18-installing the bushing;

19-a first snap ring; 20-a second snap ring; 21-a locking hole;

22-handle cap; 23-a track slide; 25-a guide post mount;

27-a groove; 34-a guide post; 35-a first return spring;

36-a top rod; 37-a holder block; 38-connecting rod;

39-a sealing ring; 40-a second return spring; 41-installing a top plate;

42-mounting the bottom plate.

Detailed Description

As shown in fig. 1 to 6, the present invention includes a housing disposed outside a liquid scintillation counter, the liquid scintillation counter includes a detection lead chamber 1, a light guide 2 disposed in the detection lead chamber 1, and two photomultiplier tubes disposed on two sides of the light guide 2, a measurement chamber 3 with an open top is disposed in the detection lead chamber 1, the measurement chamber 3 penetrates through the light guide 2, a light-shielding cover 4 for closing the measurement chamber 3 is disposed on the top of the housing, a sample moving mechanism for controlling movement of a scintillation liquid counting vial 5 in the measurement chamber 3 is disposed on the housing, and a fastener 6 inserted into the housing is disposed at the bottom of the light-shielding cover 4;

the sample moving mechanism comprises a lifting jacking mechanism, a lifting block, a pressure rod assembly, a locking device and a reset guide mechanism, wherein the lifting jacking mechanism extends into the measuring chamber 3 and is used for supporting the scintillation liquid counting bottle 5;

the shell is provided with a top panel 8 for mounting the light-shielding cover 4 and an inclined side panel 9 for mounting the pressure bar assembly, the top of the inclined side panel 9 is connected with the top panel 8, and the inclined side panel 9 inclines towards the direction far away from the detection lead chamber 1;

the depression bar subassembly is including installing installation panel 10 on oblique side board 9, the setting is at the inboard guide rail 11 of installation panel 10, and stretch into in installation panel 10 and along guide rail 11 gliding horizontal depression bar 12 from top to bottom, the axis of guide rail 11 is parallel with oblique side board 9, horizontal depression bar 12 is close to the fixed handle 13 that is provided with of one end of installation panel 10, handle 13 passes installation panel 10 and stretches out outside oblique side board 9, the central line perpendicular to installation panel 10 of handle 13, set up the rectangular hole of direction 14 that supplies handle 13 to slide on the installation panel 10.

In this embodiment, the clip 6 is a pin inserted into the side wall of the light-shielding cover 4.

It should be noted that the reset guide mechanism serves as a support mechanism of the lifting block to support the lifting block when the pressure lever assembly does not press down the lifting block, so that the pressure lever assembly overlapped on the lifting block cannot press down the lifting block under the condition of non-manual operation.

In this embodiment, the inclined side panel 9 is further provided with a display screen 15.

In this embodiment, a deep groove ball bearing 16 is disposed at one end of the horizontal pressing rod 12 overlapping the lifting block for facilitating the movement of the horizontal pressing rod 12, so as to reduce the friction between the horizontal pressing rod 12 and the lifting block, and facilitate the sliding of the horizontal pressing rod 12.

It should be noted that the maximum vertical distance of the handle 13 descending in the guide elongated hole 14 is the distance that the sample moving mechanism drives the scintillation liquid counting vial 5 to enter the center of the light guide 2 for detection.

It should be noted that the horizontal pressing rod 12 is driven by the handle 13 to move downwards along the guiding strip hole 14, and meanwhile, the deep groove ball bearing 16 moves away from the detection lead chamber 1 to press the lifting block downwards.

It should be noted that, by arranging the clamping piece 6, the light-shielding cover 4 is rotated after being inserted into the shell, so that the clamping piece 6 is clamped with the inner wall of the shell, the light-shielding cover 4 is prevented from being separated from the shell due to equipment shaking in the sample detection process, and the light-shielding property of the measurement cavity 3 in the detection process is ensured, so that the accuracy of the detection result is ensured, the structure is simple, and the use effect is good;

the scintillation liquid counting bottle 5 in the shell is driven to move in and out of the shell by arranging the pressure lever assembly outside the shell, so that complex operation in the measuring chamber 3 is avoided, and the light-shading effect in the measuring chamber 3 is easier to ensure;

the lifting block is arranged to connect the pressure bar assembly and the lifting jacking mechanism, the pure physical mechanical structure realizes lofting and light shielding of a sample, the mechanical structure is compact, the reliability is strong, the anti-seismic effect is good, and the reliability and the environmental adaptability of a product are improved through pure physical mechanical transmission;

through setting up the position of locking device locking depression bar subassembly, after depression bar subassembly drove scintillation liquid count bottle 5 and advances kind, through locking device locking depression bar subassembly, prevent its removal, need not manual control, the good reliability, the antidetonation is effectual.

In this embodiment, the locking device includes locking spring 17 and installation sleeve 18 that the cover was established on handle 13, installation sleeve 18 stretches into in installing panel 10 and compresses tightly locking spring 17 on the horizontal depression bar 12 of handle 13 bottom, and the pot head that installation sleeve 18 stretches into in installing panel 10 is equipped with the first snap ring 19 of butt in installing panel 10 inboard and sets up the second snap ring 20 that keeps away from installing panel 10 one side at first snap ring 19, and the external diameter of first snap ring 19 is greater than the width of direction rectangular hole 14, and the external diameter of second snap ring 20 is greater than the external diameter of first snap ring 19, set up the locking hole 21 with direction rectangular hole 14 intercommunication on installing panel 10, locking hole 21 sets up in the bottom of direction rectangular hole 14, and the aperture of locking hole 21 is greater than the external diameter of first snap ring 19 and is less than the external diameter of second snap ring 20.

In this embodiment, a handle cap 22 is sleeved outside the mounting sleeve 18.

It should be noted that, the horizontal pressing rod 12 moves downward along the guiding elongated hole 14 under the driving of the handle 13, when the handle 13 moves to the position of the locking hole 21 at the lower end of the guiding elongated hole 14, the handle 13 is released, the locking spring 17 pushes the mounting sleeve 18 towards the outer side of the housing, so that the first snap ring 19 extends out of the locking hole 21, the second snap ring 20 abuts against the inner side of the mounting panel 10, at this time, the handle 13 cannot move up and down normally, and only after the handle 13 is pressed into the housing, the first snap ring 19 retracts into the locking hole 21, so that the handle 13 can be normally controlled to move upward along the guiding elongated hole 14.

In this embodiment, the lifting block includes a rail sliding plate 23 for the horizontal movement of the horizontal pressing rod 12 and a guide post mounting seat 25 disposed at two ends of the rail sliding plate 23 and used for mounting the reset guide mechanism.

In this embodiment, the top panel 8 is provided with a through hole matched with the light-shielding cover 4 and a groove 27 for the clip 6 to pass through, and the groove 27 is communicated with the through hole.

It should be noted that, in the practical use process, fastener 6 of light-resistant cover 4 passes through recess 27 and stretches into in the casing, and light-resistant cover 4 rotates the back, and fastener 6 and 8 inner walls of top panel joint, the effect of through-hole and recess 27 only lie in letting light-resistant cover 4 and fastener 6 pass through.

In this embodiment, the reset guide mechanism includes a guide post 34 penetrating through the guide post mounting seat 25 and a first reset spring 35 sleeved on the guide post 34 at the lower part of the guide post mounting seat 25 and used for resetting the lifting block upwards.

In this embodiment, the number of guide posts 34 is two, and two guide posts 34 wear to establish respectively on two guide post mount pads 25, guarantees the stability when the elevator goes up and down.

In this embodiment, lift jacking mechanism is including stretching into the ejector pin 36 to measuring in the cavity 3, setting up and be used for bearing scintillation liquid count bottle 5's bearing seat 37 and be used for connecting ejector pin 36 at ejector pin 36 top and the connecting rod 38 of elevator, bearing seat 37 top is provided with sealing ring 39, and the cover is equipped with second reset spring 40 on the ejector pin 36.

In this embodiment, the connecting rod 38 is an L-shaped connecting rod, and a waist-shaped hole for connecting with the guide post mounting seat 25 is formed in the connecting rod 38, so that the mounting height of the connecting rod 38 can be conveniently adjusted according to actual conditions.

It should be noted that the outer side wall of the sealing ring 39 is attached to the inner wall of the measurement chamber 3, so that the whole light-shielding process of the part of the measurement chamber 3 containing the scintillation liquid counting bottle 5 when the lifting jacking mechanism is lifted is ensured.

It should be noted that the second return spring 40 and the first return spring 35 work together to ensure the stability of the scintillation liquid counting vial when the scintillation liquid counting vial is removed from the sample.

In this embodiment, the bottom of the guiding column 34 is fixed on the mounting bottom plate 42, and the top of the guiding column 34 is fixed on the mounting top plate 41, so as to ensure the stability of the whole structure.

When the device is used, the light-shading cover 4 is opened, the clamping piece 6 extends out of the shell through the groove 27, the scintillation liquid counting bottle 5 is placed in the measuring cavity 3, the scintillation liquid counting bottle 5 is located on the bearing seat 37, the light-shading cover 4 is closed, the clamping piece 6 extends into the shell through the groove 27, the light-shading cover 4 is horizontally rotated, the clamping piece 6 is dislocated with the groove 27, the light-shading cover 4 cannot be directly opened, the control handle 13 is pressed downwards, the horizontal pressure rod 12 is driven by the handle 13 to move downwards along the guide strip hole 14, the deep groove ball bearing 16 moves towards the direction far away from the detection lead chamber 1 and presses the lifting block downwards until the lifting jacking mechanism moves the scintillation liquid counting bottle 5 downwards to the detection position in the light guide 2, at the moment, when the handle 13 moves to the position of the locking hole 21 at the lower end of the guide strip hole 14, the handle 13 is released, the locking spring 17 pushes the installation sleeve 18 towards the outer side of the shell, make first snap ring 19 stretch out locking hole 21, and second snap ring 20 butt is inboard at installation panel 10, and handle 13 can not normally reciprocate this moment, only when pressing handle 13 back in the casing, in first snap ring 19 withdrawal locking hole 21, can normally control handle 13 along the rectangular hole 14 upward movement of direction to guarantee scintillation liquid counting bottle 5's position and the light-resistant effect of measuring chamber 3.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. The utility model provides a light-resistant type scintillation liquid count bottle sampling device which characterized in that: the device comprises a shell arranged on the outer side of a liquid scintillation counter, wherein the liquid scintillation counter comprises a detection lead chamber (1), a light guide (2) arranged in the detection lead chamber (1) and two photomultiplier tubes arranged on two sides of the light guide (2), a measurement cavity (3) with an open top is arranged in the detection lead chamber (1), the measurement cavity (3) penetrates through the light guide (2), a light-proof cover (4) used for sealing the measurement cavity (3) is arranged at the top of the shell, a sample moving mechanism used for controlling a scintillation liquid counting bottle (5) to move in the measurement cavity (3) is arranged on the shell, and a clamping piece (6) inserted into the shell is arranged at the bottom of the light-proof cover (4);

the sample moving mechanism comprises a lifting jacking mechanism, a lifting block, a pressure rod assembly, a locking device and a reset guide mechanism, wherein the lifting jacking mechanism extends into the measuring chamber (3) and is used for supporting a scintillation liquid counting bottle (5), the lifting block is used for driving the lifting jacking mechanism to lift, the pressure rod assembly is used for pressing the lifting block downwards, the locking device is used for locking the pressure rod assembly, and the reset guide mechanism is used for resetting the lifting block upwards;

the shell is provided with a top panel (8) for mounting the light-shading cover (4) and an inclined side panel (9) for mounting the pressure bar assembly, the top of the inclined side panel (9) is connected with the top panel (8), and the inclined side panel (9) inclines towards the direction far away from the detection lead chamber (1);

the depression bar subassembly is including installing installation panel (10) on oblique side board (9), set up at guide rail (11) of installation panel (10) inboard, and stretch into in installation panel (10) and along guide rail (11) gliding horizontal depression bar (12) from top to bottom, the axis of guide rail (11) is parallel with oblique side board (9), horizontal depression bar (12) are close to the fixed handle (13) that is provided with of one end of installation panel (10), handle (13) pass installation panel (10) and stretch out outside oblique side board (9), the central line perpendicular to installation panel (10) of handle (13), set up the direction rectangular hole (14) that supply handle (13) to slide on installation panel (10).

2. The light-resistant scintillation liquid counting bottle sampling device of claim 1, characterized in that: locking device establishes locking spring (17) and installation sleeve pipe (18) on handle (13) including the cover, installation sleeve pipe (18) stretch into in installation panel (10) and compress tightly locking spring (17) on horizontal depression bar (12) of handle (13) bottom, the pot head that installation sleeve pipe (18) stretched into in installation panel (10) is equipped with butt at first snap ring (19) of installation panel (10) inboard and set up second snap ring (20) of keeping away from installation panel (10) one side at first snap ring (19), the external diameter of first snap ring (19) is greater than the width of direction rectangular hole (14), the external diameter of second snap ring (20) is greater than the external diameter of first snap ring (19), set up locking hole (21) with direction rectangular hole (14) intercommunication on installation panel (10), locking hole (21) are seted up in the bottom of direction rectangular hole (14), the aperture of locking hole (21) is greater than the external diameter of first snap ring (19) and is less than the outer snap ring (20) of second snap ring (20) And (4) diameter.

3. The light-resistant scintillation liquid counting bottle sampling device of claim 1, characterized in that: the lifting block comprises a rail sliding plate (23) for the horizontal movement of the horizontal pressing rod (12) and guide post mounting seats (25) which are arranged at two ends of the rail sliding plate (23) and used for mounting the reset guide mechanism.

4. The light-resistant scintillation liquid counting bottle sampling device of claim 1, characterized in that: the top panel (8) is provided with a through hole matched with the light-proof cover (4) and a groove (27) for the clamping piece (6) to penetrate through, and the groove (27) is communicated with the through hole.

5. The light-resistant scintillation liquid counting bottle sampling device of claim 3, characterized in that: the reset guide mechanism comprises a guide post (34) arranged in the guide post mounting seat (25) in a penetrating mode and a first reset spring (35) which is sleeved on the guide post (34) on the lower portion of the guide post mounting seat (25) and used for resetting upwards the lifting block.

6. The light-resistant scintillation liquid counting bottle sampling device of claim 1, characterized in that: lift jacking mechanism including stretching into ejector pin (36) to measuring in cavity (3), setting be used for bearing scintillation liquid count bottle (5) bearing seat (37) and be used for connecting ejector pin (36) and connecting rod (38) of lifter block at ejector pin (36) top, bearing seat (37) top is provided with sealing ring (39), and the cover is equipped with second reset spring (40) on ejector pin (36).

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