Radiation dose detection device and irradiator

Abstract

The utility model provides a radiation dose detection device and irradiator, the radiation dose detection device comprises a fixed assembly, a detection assembly and a guide assembly, the detection assembly comprises a detection head, the detection head rotatably passes through the fixed assembly, the guide assembly comprises a support plate, a slip ring and a fixed plate, the slip ring comprises a static part and a rotating part rotating relative to the static part, the static part is fixedly connected to the top wall of the shielding cavity through a fixing plate, the rotating part is connected with the supporting plate, the upper portion of the detection head is connected with the supporting plate, and the detection head and the supporting plate can rotate around the axis of the slip ring; the irradiation instrument comprises a shielding cover, a rotating container, a driving device and a radiation dose detection device, the rotating container is arranged in a shielding cavity, a fixing assembly is arranged on the rotating container, a detection head extends into the rotating container, the driving device can drive the rotating container to rotate around the axis of the rotating container, and then the detection head rotates; the utility model not only has a simple structure, but also can save space.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, concretely relates to a radiation dose detection device and irradiation instrument. BACKGROUND

[0002] High-energy ray irradiation technology is widely used in food, seed and medical apparatus and instruments, and the core performance of blood irradiation instrument as a medical equipment for irradiating blood lies in central dose rate and irradiation uniformity. According to the general knowledge in the industry, the sample in the sample rotating container in the minimum load state and the full load state of the X-ray auxiliary equipment completes X-ray irradiation of a predetermined dose, and the sample absorption dose C of any position point in the sample rotating container should satisfy: 25Gy <= C <= 50Gy.

[0003] The absorption dose can be measured by ionization chamber method, and the test process is as follows: first, the sample rotating container is filled with water to the full load state and placed in the shielding cavity of the X-ray irradiation equipment, then the radiation dose detection device is installed in the shielding cavity, and the detection probe of the radiation dose detection device is inserted into the sample rotating container, then the irradiation program is started, at this time the sample rotating container starts to rotate, the X-ray generator generates X-rays to irradiate the sample rotating container, finally the position of the detection probe in the sample rotating container is adjusted, and the irradiation process is repeated, and the readings of the detection probe at each position are recorded. Thus, the central dose rate and / or irradiation uniformity and other performance parameters can be calculated from the measured values.

[0004] It should be noted that since the upper end of the detection probe is connected with the electric lead, the electric lead may be wound during the rotation of the sample rotating container, causing failure. In this regard, the patent document with publication number CN114217341A discloses a radiation dose detection device for irradiation equipment, which is connected with the support and the detection assembly through the guide, so that the rotating part rotates with the rotating container, and the detection probe also rotates synchronously around its own axis. At the same time, the detection probe is affected by the reverse force of the guide, and its rotation direction along the axis is opposite to the rotation direction of the rotating container, so that the winding of the electric lead on the detection probe during detection can be avoided, and the failure of the irradiation equipment caused thereby can be avoided. However, in the detection device, the support is arranged outside the rotating container and is spaced apart from the rotating container, so that the detection device occupies a large space of the shielding cavity, resulting in a large volume of the X-ray irradiation equipment. UTILITY MODEL CONTENTS

[0005] The first object of the utility model is to provide a radiation dose detection device with simple structure and space saving.

[0006] The second object of the utility model is to provide an irradiation instrument comprising the above-mentioned radiation dose detection device.

[0007] In order to achieve the above-mentioned first purpose, the utility model provides a kind of radiation dose detection device, it is installed in the shielding cavity of exposure instrument, and radiation dose detection device includes fixed component, detection component and guide component, detection component includes detection head, detection head is rotatably inserted into fixed component, and the lower part of detection head is downward and passes out fixed component, guide component is set in the upper of fixed component, guide component includes support plate, slip ring and fixed plate, slip ring includes stationary part and rotating part relative to stationary part, stationary part is fixedly connected on the top wall of shielding cavity by fixed plate, rotating part is connected with support plate, the upper part of detection head is connected with support plate, and detection head and support plate can rotate around the axis of slip ring.

[0008] From the above scheme, by setting guide component in the upper of fixed component, slip ring is fixedly connected on the top wall of shielding cavity, it is convenient to save space, it is beneficial to reduce the volume of radiation dose detection device and exposure instrument;By setting support plate, it is connected with slip ring and detection head respectively, it has the advantages of simple structure, and it is beneficial to save production cost;Through the above setting, detection head, support plate and rotating part can rotate synchronously with rotating container during irradiation process, which is beneficial to avoid the entanglement of electric lead of detection component.

[0009] Further scheme is that the distance from detection head to the axis of slip ring is adjustable.

[0010] Further scheme is that detection component further includes electric lead and mounting seat, detection head is detachably connected on support plate by mounting seat, and both ends of electric lead are electrically connected with detection head and rotating part respectively, and mounting seat can adjust position along the extension direction of support plate.

[0011] From the above scheme, through the above setting, it is convenient to adjust the distance from detection head to the axis of slip ring by mounting seat, and then adjust the position of upper part of detection head.

[0012] Further scheme is that fixed component includes fixed seat and rotating part, fixed seat is provided with first installation cavity, rotating part is rotatably arranged in first installation cavity, rotating part is provided with second installation cavity, detection head is inserted into second installation cavity, detection head is fixedly connected with rotating part, so that detection head and rotating part can rotate synchronously relative to fixed seat.

[0013] From the above scheme, through the above setting, detection head and rotating part can rotate synchronously relative to fixed seat.

[0014] Further, the fixing assembly further comprises a probe sleeve and a pressing block, the radiation dose detection device further comprises a top rod, the probe sleeve is arranged in the second mounting cavity, the probe head is arranged in the probe sleeve, the pressing block is arranged in the second mounting cavity and outside the probe sleeve, one end of the top rod is inserted into the second mounting cavity through the rotating piece, the end of the top rod abuts against the pressing block, and the top rod can force the probe sleeve to deform in the radial direction, so that the probe head is locked.

[0015] According to the above scheme, the probe head and the rotating piece are fixedly connected through the above arrangement.

[0016] Further, the probe head can be adjusted in position in the axial direction relative to the rotating piece.

[0017] According to the above scheme, the depth of the probe head extending into the rotating container can be adjusted to detect the radiation dose at different depths.

[0018] In order to achieve the second purpose, the utility model provides a kind of irradiation instrument, including shielding cover, rotating container, drive device and above-mentioned radiation dose detection device, shielding cavity is arranged in shielding cover, rotating container is arranged in shielding cavity, the fixing assembly of radiation dose detection device is arranged on rotating container, the probe head of radiation dose detection device extends into rotating container, drive device can drive rotating container rotates around its own axis, and then the probe head is driven to rotate by fixing assembly.

[0019] According to the above scheme, when the drive device drives the rotating container to rotate around its own axis, the rotating container drives the probe head and the support plate to rotate together through the fixing assembly, in this process, the probe head can rotate around its own axis, and the rotating direction of the probe head is opposite to the rotating direction of the rotating container, which is beneficial to avoid the entanglement of the electric lead of the detection assembly, and avoids the failure of the irradiation instrument caused thereby.

[0020] Further, the distance from the fixing assembly to the axis of the rotating container is adjustable.

[0021] Further, the rotating container comprises a main body and a cover body, the cover body covers the main body, the cover body is provided with an avoiding slot in communication with the inside of the main body, the avoiding slot extends in the radial direction of the cover body, the fixing assembly is arranged on the avoiding slot, the lower part of the probe head extends into the main body through the fixing assembly and the avoiding slot, and the fixing assembly can be adjusted in position along the extension direction of the avoiding slot.

[0022] According to the above scheme, the distance from the fixing assembly to the rotating shaft of the rotating container is adjusted, and then the position of the lower part of the probe head is adjusted.

[0023] Further, the slip ring of the radiation dose detection device is coaxially arranged with the rotating container, the first end of the detection head is fixedly connected with the support plate during rotation, or the slip ring is misaligned with the rotating container in the up-down direction, and the first end of the detection head is slidingly connected with the support plate during rotation.

[0024] According to the above scheme, by coaxially arranging the slip ring with the rotating container, the upper part and the lower part of the detection head rotate around the same rotating shaft, so that the detection head is parallel to the rotating shaft during rotation; by misaligning the slip ring with the rotating container, even if the detection head and the rotating container rotate around different rotating shafts, the detection head can be parallel to the rotating shaft of the rotating container during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is an exploded view of the radiation dose detection device embodiment of the utility model.

[0026] Figure 2 is Figure 1 is an enlarged view of A in figure 1.

[0027] Figure 3 is a structure view of the detection assembly and the guide assembly in the radiation dose detection device embodiment of the utility model.

[0028] Figure 4 is a structure view of the radiation exposure meter embodiment of the utility model.

[0029] Figure 5 is a structure view of the radiation exposure meter embodiment of the utility model.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1 - shielding cover, 11 - shielding cavity.

[0032] 2 - rotating container, 21 - main body, 22 - cover body, 221 - avoiding groove, 222 - second mounting hole.

[0033] 3 - driving device.

[0034] 4 - fixing assembly, 41 - fixing seat, 411 - first mounting cavity, 412 - bearing, 42 - rotating piece, 421 - second mounting cavity, 43 - probe sleeve, 431 - upper probe sleeve, 4311 - vacancy, 432 - lower probe sleeve, 44 - pressing block.

[0035] 5 - detection assembly, 51 - detection head, 52 - electric lead wire, 53 - mounting seat, 531 - connecting wall, 5311 - via hole, 532 - side wall, 533 - bending part, 534 - third mounting hole, 54 - female jack, 55 - male jack, 56 - locking piece.

[0036] 6 - guide assembly, 61 - support plate, 611 - first through slot, 612 - first mounting hole, 62 - sliding ring, 621 - stationary portion, 622 - rotating portion, 63 - fixed plate.

[0037] 7 - top rod.

[0038] The utility model will be further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0039] Embodiment of radiation dose detection device:

[0040] Referring to Figures 1 to 3 , in combination with Figure 4 and Figure 5 , the embodiment provides a radiation dose detection device, which is installed in a shielding cavity 11 of an irradiation instrument. The radiation dose detection device comprises a fixing assembly 4, a detection assembly 5 and a guide assembly 6. The detection assembly 5 is connected with the guide assembly 6 and the fixing assembly 4 respectively, and the guide assembly 6 is arranged above the fixing assembly 4.

[0041] The guide assembly 6 comprises a support plate 61, a sliding ring 62 and a fixed plate 63. The sliding ring 62 comprises a stationary portion 621 and a rotating portion 622 which is rotatable relative to the stationary portion 621. The stationary portion 621 is fixedly connected to the top wall of the shielding cavity 11 through the fixed plate 63. The fixed plate 63 is annular, and a through hole is formed in the middle of the fixed plate 63. The stationary portion 621 is inserted into the through hole. The wire on the upper portion of the stationary portion 621 can pass through the top wall of the shielding cavity 11 and extend to the outside of the shielding cavity 11. The rotating portion 622 is fixedly connected with one end of the support plate 61, so that the support plate 61 can rotate around the axis of the sliding ring 62 along with the rotating portion 622.

[0042] The detection assembly 5 comprises a detection head 51. The upper portion of the detection head 51 is connected with the support plate 61. The detection head 51 is rotatably inserted into the fixing assembly 4, and the lower portion of the detection head 51 passes out of the fixing assembly 4. Since the support plate 61 is fixedly connected with the rotating portion 622 of the sliding ring 62, and the rotating portion 622 is rotatably connected with the stationary portion 621, the upper portion of the detection head 51 is connected with the support plate 61, so that the detection head 51 and the support plate 61 can rotate around the axis of the sliding ring 62 simultaneously.

[0043] The detection assembly 5 further comprises an electric wire 52 and a mounting seat 53, two ends of the electric wire 52 are electrically connected with the detection head 51 and the rotating part 622 respectively, and the detection head 51 is detachably connected to the support plate 61 through the mounting seat 53. Specifically, the support plate 61 is provided with a first through slot 611 extending along the length direction of the support plate 61, and the first through slot 611 penetrates through the thickness direction of the support plate 61. The mounting seat 53 is approximately in the shape of “C”, and comprises a connecting wall 531 and two side walls 532 oppositely arranged at two ends of the connecting wall 531, and the side walls 532 are provided with inwardly extending bending parts 533. The mounting seat 53 is wrapped on the support plate 61, the connecting wall 531 is parallel to the bottom surface of the support plate 61, the side walls 532 are parallel to the side surface of the support plate 61, and the bending parts 533 abut against the top surface of the support plate 61 to prevent the mounting seat 53 from separating from the support plate 61 upward and downward. A through hole 5311 is provided in the middle of the connecting wall 531.

[0044] The upper part of the detection head 51 is fixedly connected with a jack female head 54, the jack female head 54 is upwardly and downwardly corresponding to the through hole 5311 and the first through slot 611; a jack male head 55 is detachably connected to the jack female head 54, the jack male head 55 is electrically connected with the jack female head 54, and the jack male head 55 is threadedly connected to the through hole 5311 through the first through slot 611 to limit the separation of the jack male head 55 from the mounting seat 53. The first end of the electric wire 52 is electrically connected with the jack male head 55, and the second end of the electric wire 52 penetrates through the first through slot 611 downward and is electrically connected with the rotating part 622 of the slip ring 62 to realize the transmission of detection data.

[0045] As shown in Figure 2 , the distance from the detection head 51 to the axis of the slip ring 62 is adjustable. Specifically,

[0046] A plurality of first mounting holes 612 for fixing the mounting seat 53 are provided on both sides of the first through slot 611, and the plurality of first mounting holes 612 on the same side are arranged uniformly and spaced along the extension direction of the first through slot 611. A third mounting hole 534 is provided on the side wall 532 of the mounting seat 53, and a locking member 56 is threadedly connected to the side wall 532 of the mounting seat 53, one end of the locking member 56 is inserted into one of the first mounting holes 612 through the third mounting hole 534 to realize the fixation of the mounting seat 53 to the support plate 61 and to fix the current position of the mounting seat 53.

[0047] When needed, the locking member 56 can be manually loosened, then the mounting seat 53 is moved along the extension direction of the first through slot 611, and then the locking member 56 is inserted into another first mounting hole 612 to realize the adjustment of the position of the mounting seat 53 along the extension direction of the first through slot 611, and further to adjust the position of the upper part of the detection head 51.

[0048] In combination with Figure 1 andFigure 4 The detection head 51 can rotate around its own axis within the fixed assembly 4, and the axis of the detection head 51 is parallel to the axis of the slip ring 62.

[0049] The fixed assembly 4 comprises a fixed seat 41 and a rotating member 42. The fixed seat 41 is provided with a first mounting cavity 411, and two bearings 412 are coaxially arranged in the first mounting cavity 411. The rotating member 42 is arranged in the bearings 412, so that the rotating member 42 is rotatably arranged in the first mounting cavity 411. The rotating member 42 is provided with a second mounting cavity 421, and the detection head 51 is penetratingly arranged in the second mounting cavity 421. The detection head 51 is fixedly connected with the rotating member 42, so that the detection head 51 and the rotating member 42 can synchronously rotate relative to the fixed seat 41.

[0050] In order to realize the fixed connection between the detection head 51 and the rotating member 42, the fixed assembly 4 further comprises a probe sleeve 43 and a pressing block 44, and the radiation dose detection device further comprises a top rod 7. The probe sleeve 43 is arranged in the second mounting cavity 421, and the detection head 51 is arranged in the probe sleeve 43. The probe sleeve 43 can be deformed along its radial direction. The pressing block 44 is arranged in the second mounting cavity 421 and outside the probe sleeve 43. The top rod 7 is connected to the rotating member 42, one end of the top rod 7 is penetratingly arranged into the second mounting cavity 421 through the rotating member 42, and the end of the top rod 7 abuts against the pressing block 44. By adjusting the depth of the top rod 7 inserted into the second mounting cavity 421, the probe sleeve 43 is forced to deform inwardly along its radial direction by the pressing block 44, so as to lock the detection head 51.

[0051] Preferably, the probe sleeve 43 comprises an upper probe sleeve 431 and a lower probe sleeve 432 which are connected in sequence. The upper probe sleeve 431 and the lower probe sleeve 432 can be connected by a buckle connection or a threaded connection, which is not limited herein. The pressing block 44 can be correspondingly arranged with the upper probe sleeve 431 or the lower probe sleeve 432, and the present embodiment is preferably the former. Specifically, the upper probe sleeve 431 is provided with a vacancy 4311, and the pressing block 44 can abut against one side wall of the vacancy 4311 to push the side wall of the vacancy 4311 to move towards the detection head 51. Of course, in other embodiments, the upper probe sleeve 431 can also not be provided with the vacancy, and the pressing block 44 directly pushes the peripheral wall of the upper probe sleeve 431 to deform inwardly, i.e. to lock the detection head 51.

[0052] In order to facilitate the adjustment of the depth of the detection head 51 extending into the rotating container 2, the detection head 51 of the present embodiment can be adjusted in position along its axial direction relative to the rotating member 42, i.e. the detection head 51 can be adjusted in position axially relative to the probe sleeve 43, or the detection head 51 can be adjusted in position together with the probe sleeve 43 relative to the rotating member 42.

[0053] The probe sleeve 43 is provided with a scale line, which can be arranged on the upper probe sleeve 431 and / or the lower probe sleeve 432, and the scale line is arranged along the axial direction of the probe sleeve 43.

[0054] Irradiation apparatus embodiment:

[0055] Participate Figure 4 And Figure 5 The embodiment provides an irradiation apparatus, which comprises a shielding cover 1, a rotating container 2, a driving device 3, a ray generator (not shown in the figure) and the radiation dose detection device in the above embodiment.

[0056] The shielding cover 1 is provided with a shielding cavity 11, and the ray generator is arranged outside the shielding cover 1 and can emit X-rays into the shielding cavity 11.

[0057] The rotating container 2 and the radiation dose detection device are both arranged in the shielding cavity 11. The rotating container 2 comprises a main body 21 and a cover body 22, and the cover body 22 is detachably covered on the main body 21. The cover body 22 is provided with an avoiding groove 221 in communication with the inside of the main body 21, the avoiding groove 221 extends along the radial direction of the cover body 22, and preferably, one end of the avoiding groove 221 extends to the center of the cover body 22. A plurality of second mounting holes 222 are arranged on both sides of the avoiding groove 221.

[0058] A fixing assembly 4 is arranged on the cover body 22, and a guiding assembly 6 is arranged above the rotating container 2 and is fixedly connected with the top wall of the shielding cavity 11. The distance from the fixing assembly 4 to the axis of the rotating container 2 is adjustable. Specifically, fourth mounting holes are arranged on both sides of the fixing seat 41, and the fourth mounting holes are in communication with the second mounting holes 222 in the up-down direction. The fixing seat 41 is fixedly arranged on the avoiding groove 221 by means of screws inserted into the fourth mounting holes and the second mounting holes 222.

[0059] When the position needs to be adjusted, the screws are loosened first, so that the screws are withdrawn from the second mounting holes 222, then the fixing assembly 4 is pushed to move along the extending direction of the avoiding groove 221, and the screws are screwed into another second mounting hole 222, so that the position adjustment of the fixing assembly 4 is realized.

[0060] The detection head 51 extends into the main body 21 through the fixing assembly 4 and the avoiding groove 221, and the position of the detection head 51 can be adjusted along the axial direction of the relative rotating part 42, so that the detection head 51 can detect the radiation dose at different depth positions in the rotating container 2.

[0061] The bottom of the rotating container 2 is coaxially provided with a driven wheel, the driving device 3 is preferably a motor, the driving end of the motor is provided with a driving wheel engaged with the driven wheel, the driving device 3 can drive the rotating container 2 to rotate around its own axis, and the axis of the rotating container 2 is parallel to the axis of the detection head 51 and the axis of the slip ring 62.

[0062] When the driving device 3 drives the rotating container 2 to rotate, the fixed assembly 4, the detection assembly 5 and the support plate 61 and the rotating part 622 can rotate along with the rotating container 2, so that the electric wire 52 of the detection head 51 is prevented from being wound.

[0063] In an embodiment, the slip ring 62 is coaxially arranged with the rotating container 2, and the mounting base 53 corresponds to the fixed assembly 4 in the up-down direction, so that both ends of the detection head 51 rotate around the same rotation axis; and during the rotation, the mounting base 53 is fixedly connected with the support plate 61, that is, the mounting base 53 does not relatively slide with the support plate 61 during the rotation.

[0064] In another embodiment, in the up-down direction, the slip ring 62 is arranged in a staggered manner with the rotating container 2, the mounting base 53 corresponds to the fixed assembly 4 in the up-down direction, and the mounting base 53 is slidably connected with the support plate 61 during the rotation, that is, the detection head 51 can drive the mounting base 53 to slide back and forth along the extension direction of the first through groove 611 during the rotation.

[0065] As can be seen from the above, the utility model discloses a guiding assembly 6 arranged above the rotating container 2 and connected with the top wall of the shielding cavity 11, which is convenient and saves space, so as to reduce the volume of the radiation dose detection device and the irradiator; the support plate 61 is arranged for being connected with the slip ring 62 and the detection head 51 respectively, which has the advantages of simple structure and is beneficial to saving production cost. When the driving device 3 drives the rotating container 2 to rotate around the axis thereof, the rotating container 2 drives the detection assembly 5 and the support plate 61 and the rotating part 622 to rotate through the fixed assembly 4, which is beneficial to preventing the electric wire 52 of the detection assembly 5 from being wound and avoiding the failure of the irradiator caused by the winding.

[0066] Finally, it should be emphasized that the above is only the preferred embodiment of the utility model and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A radiation dose detection device installed in a shielding cavity of an irradiation apparatus, the radiation dose detection device comprising a fixed assembly, a detection assembly and a guiding assembly, the detection assembly comprising a detection head, the detection head being rotatably inserted into the fixed assembly, and a lower part of the detection head extending downwardly out of the fixed assembly, characterized in that: the guiding assembly is arranged above the fixed assembly, the guiding assembly comprising a support plate, a sliding ring and a fixed plate, the sliding ring comprising a stationary part and a rotating part rotatable relative to the stationary part, the stationary part being fixedly connected to a top wall of the shielding cavity by the fixed plate, the rotating part being connected to the support plate, an upper part of the detection head being connected to the support plate, the detection head and the support plate being rotatable about an axis of the sliding ring.

2. The radiation dose detection device according to claim 1, characterized in that: a distance between the detection head and the axis of the sliding ring is adjustable.

3. The radiation dose detection device according to claim 2, characterized in that: the detection assembly further comprises an electrical lead and a mounting seat, the detection head being detachably connected to the support plate by the mounting seat, two ends of the electrical lead being electrically connected to the detection head and the rotating part respectively, the mounting seat being adjustable in position along an extension direction of the support plate.

4. The radiation dose detection device according to claim 1, characterized in that: the fixed assembly comprises a fixed seat and a rotating member, the fixed seat being provided with a first mounting cavity, the rotating member being rotatably arranged in the first mounting cavity, the rotating member being provided with a second mounting cavity, the detection head being inserted into the second mounting cavity, the detection head being fixedly connected to the rotating member, so that the detection head and the rotating member are synchronously rotatable relative to the fixed seat.

5. The radiation dose detection device according to claim 4, characterized in that: the fixed assembly further comprises a probe sleeve and a pressing block, the radiation dose detection device further comprising a jacking rod, the probe sleeve being arranged in the second mounting cavity, the detection head being arranged in the probe sleeve, the pressing block being arranged in the second mounting cavity and outside the probe sleeve, one end of the jacking rod being inserted into the second mounting cavity through the rotating member, an end of the jacking rod being abutted against the pressing block, the jacking rod being capable of forcing the probe sleeve to be deformed along a radial direction thereof, thereby locking the detection head.

6. The radiation dose detection device according to claim 5, characterized in that: the detection head is adjustable in position along an axial direction thereof relative to the rotating member.

7. An irradiation apparatus comprising a shielding cover, a rotating container, a driving device and the radiation dose detection device according to any one of claims 1 to 6, the shielding cover being provided with the shielding cavity, the rotating container being arranged in the shielding cavity, the fixed assembly of the radiation dose detection device being arranged on the rotating container, the detection head of the radiation dose detection device extending into the rotating container, the driving device being capable of driving the rotating container to rotate about an axis thereof, thereby driving the detection head to rotate through the fixed assembly.

8. The irradiation apparatus according to claim 7, characterized in that: ​ ​ ​ ​ 7. An irradiator characterized by ​ ​ The distance from the fixing assembly to the axis of the rotating container is adjustable.

9. The irradiator of claim 8, wherein: The rotating container comprises a main body and a cover, the cover covers the main body, the cover is provided with a relief groove in communication with the inside of the main body, and the relief groove extends along the radial direction of the cover; The fixing assembly is arranged on the relief groove, the lower part of the probe head extends into the main body through the fixing assembly and the relief groove, and the fixing assembly can be adjusted in position along the extension direction of the relief groove.

10. The irradiator of claim 7, wherein: The slip ring of the radiation dose detection device is coaxially arranged with the rotating container, and the first end of the probe head is fixedly connected with the support plate during rotation, or In the up-down direction, the slip ring is arranged in a staggered manner with the rotating container, and the first end of the probe head is slidingly connected with the support plate during rotation.

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