An irradiation source focusing device

Abstract

The utility model belongs to the field of radiation processing technology discloses a kind of irradiation source focusing device, including matrix, the center of matrix is provided with ray channel and transmission cavity, and ray channel and transmission cavity are communicated by through hole;Shielding blade, at least six groups of shielding blade are distributed in circle around ray channel;Driving mechanism, driving mechanism includes the rotation installation of through hole and rotation bar, shielding blade is detachably installed on rotation bar, rotation bar is driven by manual driving assembly, shielding blade uses replaceable design, shielding blade uses tungsten copper alloy material quality, thickness is 3-10mm, the through groove corresponding with rotation bar is set on shielding blade, and through groove is adapted with rotation bar;Through groove is provided with the clamping groove of symmetrical setting, and the clamping lug corresponding with clamping groove respectively is integrally formed on rotation bar.The utility model not only can realize quick high-precision focusing, but also can replace shielding blade of different material to adapt to different ray energy.

Description

Technical Field

[0001] This utility model relates to the field of radiation processing technology, and in particular to an irradiation source focusing device. Background Technology

[0002] An irradiation source focusing device is a technical device used to concentrate radiation energy (such as electron beams, X-rays, gamma rays, etc.) onto a specific area. Its core function is to use physical structures or electromagnetic fields to control the radiation beam to form a high-energy-density focusing effect in the target area, thereby improving irradiation efficiency or accuracy.

[0003] Existing irradiation sources mostly employ electromagnetic field control or fixed collimators for focusing, which has the following drawbacks:

[0004] 1) Electromagnetic focusing requires complex circuitry and is susceptible to interference, resulting in high maintenance costs;

[0005] 2) Fixed collimators cannot dynamically adjust the focal spot size and have poor adaptability. Therefore, we propose an irradiation source focusing device. Utility Model Content

[0006] In view of the problems of existing irradiation source focusing devices, such as the need for complex circuits for electromagnetic focusing, susceptibility to interference, high maintenance costs, and the inability of fixed collimators to dynamically adjust the focal spot size, resulting in poor adaptability, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide an irradiation source focusing device, the purpose of which is:

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] An irradiation source focusing device includes a substrate, wherein a ray channel and a transmission cavity are disposed at the center of the substrate, and the ray channel and the transmission cavity are connected through a through hole;

[0010] At least six sets of the shielding blades are arranged in a circular pattern around the ray channel;

[0011] The driving mechanism includes a rotating rod that passes through the through hole and is rotatably mounted. The shielding blade is detachably mounted on the rotating rod, and the rotating rod is driven by a manual driving component.

[0012] As a technical solution of the irradiation source focusing device of this utility model, the shielding blade adopts a replaceable design, and the shielding blade is made of tungsten copper alloy with a thickness of 3-10mm.

[0013] As a technical solution of the irradiation source focusing device of this utility model, the shielding blade is provided with a through groove corresponding to the rotating rod, and the through groove is adapted to the rotating rod;

[0014] The through slot has symmetrically arranged snap-fit ​​slots, and the rotating rod has integrally formed snap-fit ​​protrusions that correspond to the snap-fit ​​slots. The snap-fit ​​protrusions are adapted to the snap-fit ​​slots, and the shielding blades are detachably installed on the rotating rod through the through slot, the snap-fit ​​slots, and the snap-fit ​​protrusions.

[0015] As a technical solution of the irradiation source focusing device of this utility model, the manual drive component includes a drive gear disposed in the transmission cavity, a driven gear meshing with the outer surface of the drive gear, the driven gear being fixedly sleeved on one end of the rotating rod, a rotating wheel being rotatably mounted on the base through a bearing, the rotating shaft on the rotating wheel passing through the base, and one end of the rotating wheel extending into the transmission cavity being connected to the drive gear.

[0016] As a technical solution of the irradiation source focusing device of this utility model, the ratio of the number of teeth of the driving gear and the driven gear is 4:1.

[0017] As a technical solution of the irradiation source focusing device of this utility model, a laser locator is further provided in the substrate, and the crosshairs emitted by the laser locator coincide with the central axis of the ray channel.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. This utility model, by activating the laser positioner, ensures that the emitted crosshair coincides with the central axis of the ray channel, thereby ensuring that the device is axially aligned with the irradiated target area. Then, the rotating wheel is manually rotated, which drives the driving gear to rotate, which in turn drives the driven gear to rotate, which in turn drives the rotating rod to rotate. The rotating rod then drives the shielding blades to change their angle, thereby achieving continuous adjustment of the focal point. This allows for continuous adjustment of the focal point and overcomes the rigidity defects of fixed collimators, adapting to different scenario requirements.

[0020] 2. In this utility model, the shielding blades are designed to be replaceable, and different materials of shielding blades can be used to adapt to different radiation energies. At the same time, it can extend the service life of the device and reduce the overall operation and maintenance cost of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a schematic diagram of the overall main structure of this utility model.

[0023] Figure 2 This is a schematic side view of the overall structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the substrate of this utility model.

[0025] Figure 4 This is a schematic diagram of the separation structure of the drive mechanism and the shielding blades of this utility model.

[0026] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] In the diagram: 1. Matrix; 101. Ray channel; 102. Transmission cavity; 2. Shielding blade; 201. Through slot; 202. Snap-fit ​​slot; 301. Drive gear; 302. Driven gear; 303. Rotating rod; 3031. Snap-fit ​​protrusion; 304. Rotating wheel; 4. Laser positioner. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Reference Figures 1-5 A radiation source focusing device is provided. The radiation source focusing device includes a substrate 1. A ray channel 101 and a transmission cavity 102 are provided at the center of the substrate 1, and the ray channel 101 and the transmission cavity 102 are connected through a through hole.

[0031] Shielding blades 2, at least six sets of shielding blades 2 are distributed in a circular pattern around the ray channel 101;

[0032] The drive mechanism includes a rotating rod 303 that is rotatably mounted through a through hole. The shielding blades 2 are detachably mounted on the rotating rod 303. The rotating rod 303 is driven by a manual drive assembly. In application, the angle adjustment function of the shielding blades 2 is realized through the mechanical linkage design between the rotating rod 303 and the manual drive assembly, which solves the problem of electromagnetic focusing system relying on circuit control, reduces maintenance costs, and the circumferential distribution of the six sets of shielding blades 2 can make the radiation beam focus uniformly.

[0033] Reference Figure 1 and Figure 4 The shielding blade 2 adopts a replaceable design and is made of tungsten copper alloy with a thickness of 3-10mm. In application, the tungsten copper alloy material takes into account both radiation shielding and lightweight requirements. The replaceable thickness design of 3-10mm allows the device to adapt to different energy level irradiation scenarios, and can reduce maintenance costs compared with traditional integral shielding structures.

[0034] Reference Figure 4 and Figure 5 The shielding blade 2 has a through groove 201 corresponding to the rotating rod 303, and the through groove 201 is adapted to the rotating rod 303;

[0035] The through slot 201 has symmetrically arranged snap-fit ​​slots 202. The rotating rod 303 has integrally formed snap-fit ​​protrusions 3031 that correspond to the snap-fit ​​slots 202. The snap-fit ​​protrusions 3031 are adapted to the snap-fit ​​slots 202. The shielding blade 2 can be detachably installed on the rotating rod 303 through the through slot 201, the snap-fit ​​slots 202 and the snap-fit ​​protrusions 3031. In application, the cooperation structure between the snap-fit ​​protrusions 3031 and the through slot 201 can realize the rapid replacement of the shielding blade 2 in a short time. At the same time, the symmetrical design of the snap-fit ​​slots 202 can ensure the installation stability and avoid the metal fatigue problem caused by traditional bolt fixing.

[0036] Reference Figure 2 and Figure 4 The manual drive assembly includes a drive gear 301 located in the transmission cavity 102. A driven gear 302 is meshed with the outer surface of the drive gear 301. The driven gear 302 is fixedly sleeved on one end of the rotating rod 303. A rotating wheel 304 is rotatably mounted on the base 1 via a bearing. The rotating shaft on the rotating wheel 304 passes through the base 1, and one end of the rotating wheel 304 extends into the transmission cavity 102 and is connected to the drive gear 301 so as to drive the rotating rod 303 to rotate.

[0037] Reference Figure 1 and Figure 4 The gear ratio of the driving gear 301 and the driven gear 302 is 4:1. In application, the gear set with a gear ratio of 4:1 can reduce the manual operation torque to below 0.5 N·m, while achieving an angle adjustment accuracy of 0.1°.

[0038] Reference Figure 1 and Figure 3 The substrate 1 is also equipped with a laser positioner 4. The crosshairs emitted by the laser positioner 4 coincide with the central axis of the ray channel 101. In application, the axial calibration of the laser positioner 4 and the ray channel 101 can improve the range of positioning error control of the device.

[0039] The working principle of this utility model is as follows: By activating the laser positioner 4, the crosshair of the emitted beam is made to coincide with the central axis of the ray channel 101, ensuring that the device is axially aligned with the irradiated target area. Then, the rotating wheel 304 is manually rotated. At this time, the rotating wheel 304 drives the driving gear 301 to rotate, the driving gear 301 drives the driven gear 302 to rotate, the driven gear 302 drives the rotating rod 303 to rotate, and the rotating rod 303 drives the shielding blade 2 to change the angle, so as to achieve continuous adjustment of the focus. During this period, the radiation beam is focused through the gap between the shielding blades 2 and output through the ray channel 101. The angle of the shielding blades 2 can be dynamically adjusted according to the needs to adapt to different energy levels, thereby achieving fast and high-precision focusing. At the same time, the shielding blades 2 of different materials can be replaced to adapt to different ray energies.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A radiation source focusing device, characterized in that: include: The substrate (1) has a ray channel (101) and a transmission cavity (102) at its center, and the ray channel (101) and the transmission cavity (102) are connected through a through hole; Shielding blades (2), at least six sets of the shielding blades (2) are arranged in a circular pattern around the ray channel (101); The driving mechanism includes a rotating rod (303) that passes through the through hole and is rotatably mounted. The shielding blade (2) is detachably mounted on the rotating rod (303). The rotating rod (303) is driven by a manual driving assembly.

2. The irradiation source focusing device according to claim 1, characterized in that: The shielding blade (2) adopts a replaceable design and is made of tungsten copper alloy with a thickness of 3-10mm.

3. The irradiation source focusing device according to claim 2, characterized in that: The shielding blade (2) has a through groove (201) corresponding to the rotating rod (303), and the through groove (201) is adapted to the rotating rod (303); The through slot (201) is provided with symmetrically arranged snap-fit ​​slots (202), and the rotating rod (303) has integrally formed snap-fit ​​protrusions (3031) that correspond to the snap-fit ​​slots (202). The snap-fit ​​protrusions (3031) are adapted to the snap-fit ​​slots (202). The shielding blade (2) is detachably installed on the rotating rod (303) through the through slot (201), the snap-fit ​​slots (202) and the snap-fit ​​protrusions (3031).

4. The irradiation source focusing device according to claim 1, characterized in that: The manual drive assembly includes a drive gear (301) disposed in the transmission cavity (102), and a driven gear (302) meshes with the outer surface of the drive gear (301). The driven gear (302) is fixedly sleeved on one end of the rotating rod (303). A rotating wheel (304) is rotatably mounted on the base (1) via a bearing. The rotating shaft on the rotating wheel (304) passes through the base (1), and one end of the shaft extending into the transmission cavity (102) is connected to the drive gear (301).

5. The irradiation source focusing device according to claim 4, characterized in that: The gear ratio of the driving gear (301) to the driven gear (302) is 4:

1.

6. The irradiation source focusing device according to claim 1, characterized in that: The substrate (1) is also provided with a laser locator (4), and the crosshairs emitted by the laser locator (4) coincide with the central axis of the ray channel (101).

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