CN113514867B - Light-avoiding interlocking system for liquid scintillation counter - Google Patents
Light-avoiding interlocking system for liquid scintillation counter Download PDFInfo
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- CN113514867B CN113514867B CN202110578816.2A CN202110578816A CN113514867B CN 113514867 B CN113514867 B CN 113514867B CN 202110578816 A CN202110578816 A CN 202110578816A CN 113514867 B CN113514867 B CN 113514867B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
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Abstract
The invention discloses a light-proof interlocking system for a liquid scintillation counter, which comprises a shell arranged outside a detection lead chamber, a light-proof cover arranged at the top of the shell and used for sealing a measurement cavity, a sample moving mechanism arranged on the shell and used for controlling a sample bottle to move in the measurement cavity, and a limiting mechanism connected between the light-proof cover and the sample moving mechanism and used for limiting the movement of the light-proof cover and the sample moving mechanism, wherein a clamping piece inserted into the shell is arranged at the bottom of the light-proof cover. According to the invention, the light-proof cover and the pressure rod assembly are mutually restricted and interlocked, so that manual lofting and instant measurement are realized, the requirement of rapid measurement in a field environment is met, the light-proof state of the measurement chamber during measurement and during a sample changing process is ensured, the pressure rod assembly is locked and cannot be pulled when the light-proof cover is opened, the light-proof cover is locked and cannot be opened during the measurement process, misoperation of personnel during a detection process is prevented, the detection accuracy is ensured, and the device is convenient to popularize and use.
Description
Technical Field
The invention belongs to the technical field of liquid scintillation measurement, and particularly relates to a light-resistant linkage system for a liquid scintillation counter.
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.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a light-shielding interlocking system for a liquid scintillation counter, aiming at the defects in the prior art, the light-shielding interlocking system is simple in structure, reasonable in design and strong in practicability, the light-shielding cover and the rotation limiting block are linked, so that the light-shielding cover and the pressure rod assembly are mutually restricted and interlocked, manual lofting and instant measurement are realized, the requirement of rapid measurement in the field environment is met, the light-shielding state of a measurement cavity is ensured during measurement and during a sample changing process, the pressure rod assembly is locked and cannot be pulled when the light-shielding cover is opened, the light-shielding cover is locked and cannot be opened during the measurement process, misoperation of personnel during the detection process is prevented, the detection accuracy is ensured, and the popularization and the use are convenient.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a liquid scintillation counter is with avoiding light interlocking system, liquid scintillation counter is including surveying plumbous room, setting at the light guide of surveying plumbous indoor and two photomultiplier that set up in the light guide both sides, survey the indoor open-top's that has of plumbous measurement cavity, the measurement cavity runs through the light guide, its characterized in that: the light-resistant interlocking system comprises a shell arranged outside the detection lead chamber, a light-resistant cover arranged at the top of the shell and used for sealing the measurement cavity, a sample moving mechanism arranged on the shell and used for controlling a sample bottle to move in the measurement cavity, and a limiting mechanism connected between the light-resistant cover and the sample moving mechanism and used for limiting the movement of the light-resistant cover and the sample moving mechanism, wherein 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 which extends into the measuring chamber and is used for supporting a sample bottle, a lifting stop block which is used for driving the lifting jacking mechanism to lift, a pressure rod assembly which is used for pressing the lifting stop block downwards, a locking device which is used for locking the pressure rod assembly, and a reset guide mechanism which is used for resetting the lifting stop block upwards;
the limiting mechanism comprises a rotating limiting block for limiting the descending of the lifting stop block, the horizontal rotating direction of the rotating limiting block is limited by the side wall of the lifting stop block, and the rotating limiting block is in transmission connection with the light-shading cover through a gear transmission mechanism.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: 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.
The light-avoiding linkage system for the liquid scintillation counter is 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.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: the lifting stop block comprises a rail sliding plate for horizontal movement of a horizontal compression rod, a limiting vertical plate arranged on the rail sliding plate and used for limiting the rotation of the limiting block to horizontally rotate, and a guide post mounting seat arranged at two ends of the limiting vertical plate and used for mounting the reset guide mechanism.
The light-avoiding linkage system for the liquid scintillation counter is 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.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: the gear transmission mechanism comprises a rotating shaft used for installing a rotating limiting block, a gear ring which is arranged at the top of the detection lead chamber and is driven by the shading cover to rotate, and a sector which is fixed on the rotating shaft and is in transmission connection with the gear ring.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: a gland fixed on the gear ring is arranged between the gear ring and the light-shading cover, a clamping groove matched with the clamping piece is formed in the gland, and the clamping piece is inserted into the clamping groove and drives the gear ring to rotate.
The light-avoiding linkage system for the liquid scintillation counter is 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 stop block.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: the lifting jacking mechanism comprises a mandril stretching into the measuring chamber, a bearing seat arranged at the top of the mandril and used for bearing a sample bottle, and a connecting rod used for connecting the mandril with the lifting stop block, wherein a sealing ring is arranged at the top of the bearing seat, and a second reset spring is sleeved on the mandril.
The light-avoiding linkage system for the liquid scintillation counter is characterized in that: the top of the rotating shaft is fixed on the installation top plate, the bottom of the rotating shaft is fixed on the installation bottom plate, and the installation top plate is provided with a limiting column used for limiting the rotating angle of the sector.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the light-proof cover and the rotation limiting block are linked, so that the light-proof cover and the pressure rod assembly are mutually restricted and linked, manual lofting and instant measurement are realized, the requirement of field environment rapid measurement is met, the light-proof state of the measurement cavity during measurement and during the sample changing process is ensured, the pressure rod assembly is locked and cannot be pulled when the light-proof cover is opened, the light-proof cover is locked and cannot be opened during the measurement process, misoperation of personnel during the detection process is prevented, and the detection accuracy is ensured.
2. The invention belongs to a pure physical mechanical device for realizing sample lofting and light shielding, has compact mechanical structure, strong reliability and good anti-seismic effect, and improves the reliability and environmental adaptability of products through pure physical mechanical transmission.
3. The invention ensures that an operator can only carry out detection operation according to the specified operation steps, and if the operator deviates from the process and jumps, the operator cannot carry out the detection operation due to the limitation of the limiting mechanism, thereby directly avoiding misoperation and ensuring the detection accuracy.
In conclusion, the light-proof cover and the rotation limiting block are linked, so that the light-proof cover and the pressure rod assembly are mutually restricted and linked, manual lofting and real-time measurement are realized, the requirement of field environment rapid measurement is met, the light-proof state of the measurement cavity in the measurement process and the sample changing process is ensured, the pressure rod assembly is locked and cannot be pulled when the light-proof cover is opened, the light-proof cover is locked and cannot be opened in the measurement process, the pure physical mechanical structure prevents misoperation of personnel in the detection process, the reliability is high, the anti-seismic effect is good, the detection accuracy is ensured, and the popularization and the use are convenient.
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 structural view of fig. 1 with the top panel and the inclined 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. 2 at B.
Fig. 7 is an enlarged view of fig. 3 at C.
Description of reference numerals:
1-detecting lead chamber; 2-a light guide; 3-a measurement chamber;
4-light-proof cover; 5-sample 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; 24-a limiting vertical plate;
25-a guide post mount; 26-a limiting column; 27-a groove;
28-rotating shaft; 29-gear ring; 30-toothed sector;
31-ball plunger; 32-a gland; 33-card slot;
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 7, the liquid scintillation counter includes a detection lead chamber 1, a light guide 2 disposed in the detection lead chamber 1, and two photomultipliers disposed at two sides of the light guide 2, wherein the detection lead chamber 1 has a measurement chamber 3 with an open top, the measurement chamber 3 penetrates through the light guide 2, the light-shielding interlocking system includes a housing disposed at an outer side of the detection lead chamber 1, a light-shielding cover 4 disposed at a top of the housing and used for closing the measurement chamber 3, a sample moving mechanism disposed on the housing and used for controlling a sample bottle 5 to move in the measurement chamber 3, and a limiting mechanism connected between the light-shielding cover 4 and the sample moving mechanism and used for limiting movement of the light-shielding cover 4 and the sample moving mechanism, and a clamping member 6 inserted into the housing is disposed at a bottom of the light-shielding cover 4;
the sample moving mechanism comprises a lifting jacking mechanism which extends into the measuring chamber 3 and is used for supporting the sample bottle 5, a lifting stop block which is used for driving the lifting jacking mechanism to lift, a pressure rod assembly which is used for pressing down the lifting stop block, a locking device which is used for locking the pressure rod assembly, and a reset guide mechanism which is used for resetting the lifting stop block upwards;
the limiting mechanism comprises a rotating limiting block 7 for limiting the descending of the lifting stop block, the horizontal rotating direction of the rotating limiting block 7 is limited by the side wall of the lifting stop block, and the rotating limiting block 7 is in transmission connection with the light-shading cover 4 through a gear transmission mechanism.
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 stop block to support the lifting stop block when the press rod assembly does not press down the lifting stop block, so that the press rod assembly overlapped on the lifting stop block cannot press down the lifting stop block under the condition of non-manual operation.
It should be noted that when the light-shielding cover 4 is in an optional opening and closing state, that is, when the card 6 is lifted up without being limited by the housing, the rotation limiting block 7 is in a state of limiting the descending of the lifting stop.
What need explain is, through covering 4 with keeping away light and rotating stopper 7 linkage, make the keeping away light cover 4 with the depression bar subassembly restricts chain each other, realizes manual laying-out and instantaneous measurement, satisfies field environment rapid survey's requirement, when having guaranteed to measure with the light-proof state of changing a design in-process measurement chamber 3 for the depression bar subassembly lock is died and can not stimulate when the light-proof cover is opened, and is covered the lock and can not be opened at the measurement in-process, prevents personnel's maloperation in the testing process, guarantees the accuracy of detecting.
The light-resistant interlocking system belongs to a pure physical mechanical device for realizing sample lofting and light resistance, has compact mechanical structure, strong reliability and good anti-seismic effect, and improves the reliability and environmental adaptability of products through pure physical mechanical transmission.
The light-resistant interlocking system is arranged, so that an operator can only carry out detection operation according to specified operation steps, and if the operation deviates from the process jumping operation, misoperation can be directly avoided due to the fact that the operation is limited by the limiting mechanism, and the accuracy of detection is guaranteed.
In this embodiment, the housing has 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 is inclined in a direction away from the lead detection 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 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 lift stop 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 lift stop block, thereby facilitating 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 of the sample moving mechanism to drive the sample bottle 5 into 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 stop block downwards.
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 compression bar 12 moves downwards along the guide 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 guide 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, the handle 13 can be normally controlled to move upwards along the guide elongated hole 14; in the meantime, after the handle 13 is locked in the locking hole 21, the light-shielding cover 4 cannot be rotated and therefore cannot be opened, so that the light-shielding cover 4 is locked, and the accuracy of detection is ensured.
In this embodiment, the lifting stop block comprises a rail sliding plate 23 for the horizontal movement of the horizontal compression rod 12, a limiting vertical plate 24 arranged on the rail sliding plate 23 and used for limiting the horizontal rotation of the rotation limiting block 7, and a guide post mounting seat 25 arranged at two ends of the limiting vertical plate 24 and used for mounting the reset guide mechanism.
It should be explained that, including the lofting to sample bottle 5, advance a kind, return a kind and four processes of sample in the sample measurement process, wherein, lofting and sample need open light-resistant lid 4, the process of advancing a kind and returning a kind needs light-resistant lid 4 whole to seal, the spacing riser 24 restriction of in-process of advancing a kind and returning a kind rotates stopper 7, light-resistant lid 4 is connected with rotation stopper 7 transmission, consequently light-resistant lid 4 also can't rotate, light-resistant lid 4 can't lift out under the restriction of fastener 6 the casing prevents personnel maloperation in the testing process, makes operating personnel can only operate according to the operating procedure of regulation, if skew flow jump step operation then can be because stop gear's restriction can't carry out, directly avoids the maloperation, guarantees the accuracy of detection.
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 gear transmission mechanism includes a rotating shaft 28 for installing the rotation limiting block 7, a gear ring 29 which is arranged at the top of the detection lead chamber 1 and is driven to rotate by the light-shielding cover 4, and a sector 30 which is fixed on the rotating shaft 28 and is in transmission connection with the gear ring 29.
In this embodiment, a ball plunger 31 for facilitating the rotation of the gear ring 29 is disposed at the bottom of the gear ring 29.
It should be noted that the gear transmission mechanism realizes the transmission connection between the light-shielding cover 4 and the rotation limiting block 7, and when the rotation limiting block 7 is limited and cannot rotate, the light-shielding cover 4 cannot rotate.
In this embodiment, a pressing cover 32 fixed on the gear ring 29 is arranged between the gear ring 29 and the light-shielding cover 4, a clamping groove 33 matched with the clamping piece 6 is formed in the pressing cover 32, and the clamping piece 6 is inserted into the clamping groove 33 and drives the gear ring 29 to rotate.
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 stop block upwards.
In this embodiment, the quantity of guide post 34 is two, and two guide posts 34 are worn to establish respectively on the guide post mount pad 25 at spacing riser 24 both ends, guarantee stability when lift dog goes up and down.
In this embodiment, the lifting jacking mechanism comprises a top rod 36 extending into the measurement chamber 3, a supporting seat 37 arranged at the top of the top rod 36 and used for supporting the sample bottle 5, and a connecting rod 38 used for connecting the top rod 36 with the lifting stop block, wherein a sealing ring 39 is arranged at the top of the supporting seat 37, and a second return spring 40 is sleeved on the top rod 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 lifting jacking mechanism is ensured to accommodate part of the measurement chamber 3 containing the sample bottle 5 to avoid light during lifting.
It should be noted that the second return spring 40 and the first return spring 35 work together to ensure the stability of the sample bottle when the sample bottle is removed.
In this embodiment, the top of the rotating shaft 28 is fixed on the top mounting plate 41, the bottom of the rotating shaft 28 is fixed on the bottom mounting plate 42, and the top mounting plate 41 is provided with the limiting post 26 for limiting the rotation angle of the sector 30.
In this embodiment, the quantity of spacing post 26 is two, and two spacing posts 26 set up in sector 30 both sides, and during the actual installation, two spacing post 26's concrete mounted position adjusts according to the actual installation condition, and when making sector 30 spacing by the spacing post 26 of one side, rotate stopper 7 and can restrict the lift dog descends, when sector 30 rotatory back is spacing by the spacing post 26 of opposite side, the horizontal rotation direction of rotating stopper 7 quilt the lift dog is restricted.
In this embodiment, the maximum rotatable angle of the sector 30 enables the rotation limiting block 7 to be completely separated from the track sliding plate 23, so as to ensure that the lifting stop block can descend smoothly.
In this embodiment, the limiting columns 26 are pins.
It should be noted that the limiting column 26 also functions to prevent the sector 30 from disengaging from the gear ring 29, so as to avoid maintenance due to the tooth disengagement of the sector 30.
In this embodiment, the bottom of the guiding column 34 is also fixed on the mounting bottom plate 42, and the top of the guiding column 34 is also fixed on the mounting top plate 41, so as to ensure the stability of the whole structure.
In this embodiment, the bottom of the sector 30 contacts with the top of the installation top plate 41, so as to ensure the stability of the sector 30 during rotation.
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 (5)
1. The utility model provides a liquid scintillation counter is with light-resistant interlocking system, liquid scintillation counter is including surveying lead chamber (1), setting light guide (2) and two photomultiplier that set up in light guide (2) both sides in surveying lead chamber (1), survey measuring chamber (3) that have open-top in lead chamber (1), measuring chamber (3) run through light guide (2), its characterized in that: the light-resistant interlocking system comprises a shell arranged outside the detection lead chamber (1), a light-resistant cover (4) arranged at the top of the shell and used for sealing the measurement cavity (3), a sample moving mechanism arranged on the shell and used for controlling the movement of a sample bottle (5) in the measurement cavity (3), and a limiting mechanism connected between the light-resistant cover (4) and the sample moving mechanism and used for limiting the movement of the light-resistant cover (4) and the sample moving mechanism, wherein a clamping piece (6) inserted into the shell is arranged at the bottom of the light-resistant cover (4);
the sample moving mechanism comprises a lifting jacking mechanism, a lifting stop block, a pressure bar 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 sample bottle (5), the lifting stop block is used for driving the lifting jacking mechanism to lift, the pressure bar assembly is used for pressing the lifting stop block downwards, the locking device is used for locking the pressure bar assembly, and the reset guide mechanism is used for resetting the lifting stop block upwards;
the limiting mechanism comprises a rotating limiting block (7) for limiting the lifting stop block to descend, the horizontal rotating direction of the rotating limiting block (7) is limited by the side wall of the lifting stop block, and the rotating limiting block (7) is in transmission connection with the light-shading cover (4) through a gear transmission mechanism;
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 pressing rod assembly comprises a mounting panel (10) mounted on the inclined side panel (9), a guide rail (11) arranged on the inner side of the mounting panel (10) and a horizontal pressing rod (12) extending into the mounting panel (10) and sliding up and down along the guide rail (11), the central axis of the guide rail (11) is parallel to the inclined side panel (9), one end, close to the mounting panel (10), of the horizontal pressing rod (12) is fixedly provided with a handle (13), the handle (13) penetrates through the mounting panel (10) and extends out of the inclined side panel (9), the central line of the handle (13) is perpendicular to the mounting panel (10), and a guide long strip hole (14) for the handle (13) to slide is formed in the mounting panel (10);
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) Diameter;
the lifting stop block comprises a rail sliding plate (23) for a horizontal compression rod (12) to move horizontally, a limiting vertical plate (24) which is arranged on the rail sliding plate (23) and used for limiting the rotation limiting block (7) to rotate horizontally, and guide post mounting seats (25) which are arranged at two ends of the limiting vertical plate (24) and used for mounting the reset guide mechanism;
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 pass through, and the groove (27) is communicated with the through hole;
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 stop block.
2. The light-shielding linkage system for the liquid scintillation counter of claim 1, wherein: the gear transmission mechanism comprises a rotating shaft (28) used for installing a rotation limiting block (7), a gear ring (29) which is arranged at the top of the detection lead chamber (1) and is driven to rotate by the light-shading cover (4), and a sector (30) which is fixed on the rotating shaft (28) and is in transmission connection with the gear ring (29).
3. The light-shielding linkage system for the liquid scintillation counter as claimed in claim 2, wherein: be provided with between gear ring (29) and light-resistant lid (4) and fix gland (32) on gear ring (29), seted up on gland (32) with fastener (6) complex draw-in groove (33), fastener (6) insert in draw-in groove (33) and drive gear ring (29) and rotate.
4. The light-shielding linkage system for the liquid scintillation counter of claim 1, wherein: the lifting jacking mechanism comprises a mandril (36) extending into the measuring chamber (3), a bearing seat (37) arranged at the top of the mandril (36) and used for bearing a sample bottle (5), and a connecting rod (38) used for connecting the mandril (36) with the lifting stop block, wherein a sealing ring (39) is arranged at the top of the bearing seat (37), and a second reset spring (40) is sleeved on the mandril (36).
5. The light-shielding linkage system for the liquid scintillation counter as claimed in claim 2, wherein: the top of the rotating shaft (28) is fixed on the mounting top plate (41), the bottom of the rotating shaft (28) is fixed on the mounting bottom plate (42), and the mounting top plate (41) is provided with a limiting column (26) used for limiting the rotating angle of the sector (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1186347A (en) * | 1966-04-29 | 1970-04-02 | Atomic Energy Authority Uk | Improvements in or relating to Liquid Scintillation Counters |
| CN107144870A (en) * | 2017-06-19 | 2017-09-08 | 环境保护部核与辐射安全中心 | The sampling device and liquid for dodging spectrometer for liquid dodge spectrometer |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1186347A (en) * | 1966-04-29 | 1970-04-02 | Atomic Energy Authority Uk | Improvements in or relating to Liquid Scintillation Counters |
| CN107144870A (en) * | 2017-06-19 | 2017-09-08 | 环境保护部核与辐射安全中心 | The sampling device and liquid for dodging spectrometer for liquid dodge spectrometer |
Non-Patent Citations (1)
| Title |
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| FH1935型微机低本底液闪计数器结构设计;代主得;《核电子学与探测技术》;19901120(第06期);365-368 * |
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