An X-ray collimation and automatic filter replacement device

Abstract

This utility model discloses an X-ray collimation and automatic filter replacement device, characterized in that it includes a front collimation unit, a guide rail mounting plate, a lead screw motor, a filter mounting plate, and miniature guide rails; the front end of the front collimation unit is connected to the X-ray emission port of the X-ray source for collimating the input X-rays before outputting them; the rear end of the front collimation unit is connected to the front end of the guide rail mounting plate; the guide rail mounting plate has a strip-shaped slit for outputting the X-rays collimated by the front collimation unit; miniature guide rails are respectively provided on both sides of the rear end of the guide rail mounting plate; the filter mounting plate is mounted on the miniature guide rails for providing linear guidance for the movement of the filter mounting plate; the filter mounting plate has multiple side-by-side filter plates for filtering the X-rays output through the strip-shaped slits; a lead screw motor is mounted on one side of the guide rail mounting plate, and the lead screw motor is connected to the filter mounting plate for driving the filter mounting plate to move linearly along the miniature guide rails to achieve switching between different filter plates.

Description

Technical Field

[0001] This utility model belongs to the technical field of X-ray collimation and automatic filter replacement, and relates to an X-ray collimation and automatic filter replacement device. Background Technology

[0002] Currently, different filters are used in X-ray equipment depending on the material being scanned. However, most filter replacements are done manually, which requires unscrewing multiple sets of limit screws, making it troublesome and cumbersome. In particular, the filters are easily contaminated during replacement, affecting the imaging effect, thus requiring improvement. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide an X-ray collimation and automatic filter replacement device.

[0004] The technical solution of this utility model is as follows:

[0005] An X-ray collimation and automatic filter replacement device, characterized in that it includes a front collimation unit 1, a guide rail mounting plate 2, a lead screw motor 4, a filter mounting plate 5, and a miniature guide rail 6;

[0006] The front end of the pre-collimation unit 1 is connected to the X-ray emission port of the X-ray source for collimating the input X-rays before outputting them; the rear end of the pre-collimation unit 1 is connected to the front end of the guide rail mounting plate 2; the guide rail mounting plate 2 is provided with a strip-shaped slit for outputting the X-rays collimated by the pre-collimation unit 1.

[0007] The miniature guide rails 6 are respectively provided on both sides of the rear end of the guide rail mounting plate 2; the filter plate mounting plate 5 is mounted on the miniature guide rail 6 to provide linear guidance for the movement of the filter plate mounting plate 5;

[0008] The filter mounting plate 5 is provided with a plurality of side-by-side filter elements, which are used to filter the X-rays output through the strip slit;

[0009] The lead screw motor 4 is installed on one side of the guide rail mounting plate 2. The lead screw motor 4 is connected to the filter plate mounting plate 5 through a connecting component and is used to drive the filter plate mounting plate 5 to move linearly along the miniature guide rail 6 to realize the switching of different filter plates.

[0010] Furthermore, it also includes a photoelectric sensing plate 8, and a slotted photoelectric sensor 9 is provided on one side of the front end of the guide rail mounting plate 2; one end of the photoelectric sensing plate 8 is connected to the filter plate mounting plate 5, and the other end extends to the front end of the guide rail mounting plate 2. The photoelectric sensing plate 8 is driven to move by the movement of the filter plate mounting plate 5. When the photoelectric sensing plate 8 blocks the slotted photoelectric sensor 9, the zero position of the lead screw motor 4 is determined.

[0011] Furthermore, the front end of the pre-collimation unit 1 is provided with a frustum structure for embedding inside the X-ray source emission port to shield the scattered X-ray rays; the frustum structure is provided with a slit in the middle for collimating the input X-rays before outputting them.

[0012] Furthermore, the connecting component is a right-angle connecting component 3, and the lead screw motor 4 is installed on one side of the front end of the guide rail mounting plate 2; the upper end of the right-angle connecting component 3 is connected to the lead screw motor 4, and the lower end of the right-angle connecting component 3 is connected to the filter plate mounting plate 5.

[0013] Furthermore, the filter mounting plate 5 is provided with multiple pairs of filter pressing plates 7, each pair of filter pressing plates 7 is used to press down both ends of a filter and fix it on the filter mounting plate 5.

[0014] The X-ray collimation and automatic filter switching device of this utility model includes a front collimation unit 1. The upper end of the front collimation unit 1 is connected to the emission port of the X-ray source device by screws. The lower end is connected to a guide rail mounting plate 2 with a miniature guide rail 6. A filter mounting plate 5 is fixed on the guide rail. The filter mounting plate 5 can install three different filters. A lead screw motor 4 is installed at a limited position on the upper right end of the guide rail mounting plate 2. The lead screw motor 4 provides the power source for the filter replacement device. The lead screw motor 4 is connected to the filter mounting plate 5 through a connecting component. The rotation of the lead screw motor 4 realizes the switching of four modes: three filter modes and no filter mode.

[0015] The upper end of the front collimation unit 1 is designed in the shape of a frustum, which makes it easier to embed into the X-ray source emission port and better shield the scattered rays. A small long slit is opened in the middle to ensure that enough X-rays irradiate the detector while minimizing the emission of excess rays.

[0016] The filter mounting plate 5 is designed with a pressing method to fix the filter, which can meet the needs of assembling filter sheets of different materials and thicknesses.

[0017] For ease of installation, maintenance, and disassembly of individual components, the size of the guide rail mounting plate 2 is designed to avoid the fixing holes of the front collimation unit 1.

[0018] The lead screw motor 4 serves as the power source for the device. In order to save installation space, it is fixed in a limited position at the upper right corner of the guide rail mounting plate 2. It is connected to the filter plate mounting plate 5 through the right-angle connecting assembly 3. The rotation of the lead screw motor 4 drives the filter plate mounting plate 5 to move linearly along the miniature guide rail 6.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] This utility model allows for the arbitrary assembly of filter sheets of different materials and thicknesses, and enables automatic switching between four modes: three types of filter sheets and no filter sheet. Furthermore, the components are installed independently, facilitating the disassembly and maintenance of any component. Attached Figure Description

[0021] Figure 1 This is the overall assembly drawing of this utility model.

[0022] Figure 2 This is a structural diagram of an automatic filter replacement system.

[0023] Figure 3 This is a bottom view of the automatic filter replacement system.

[0024] Reference numerals: 1-front collimation unit, 2-guide rail mounting plate, 3-right angle connection assembly, 4-screw motor, 5-filter mounting plate, 6-miniature guide rail, 7-filter pressure plate, 8-photoelectric sensor plate, 9-groove type photoelectric sensor, 10-automatic filter replacement device. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the features in the embodiments and variant embodiments of this application can be combined with each other.

[0027] See Figures 1-3This invention provides an X-ray collimation and automatic filter replacement device, including a front collimation unit 1, which is fixed at the X-ray source emission port. The top of the front collimation unit 1 is designed in a frustum shape for easy embedding into the X-ray source emission port, thus better shielding X-ray scattered rays while collimating the X-rays. The automatic filter replacement device 10 mainly realizes the automatic replacement of X-ray filters. The automatic filter replacement device 10 includes a guide rail mounting plate 2, a right-angle connecting assembly 3, a lead screw motor 4, a filter mounting plate 5, a miniature guide rail 6, a filter pressure plate 7, a photoelectric sensing plate 8, and a slotted photoelectric sensor 9. The lead screw motor 4 serves as the power source for the entire device, driving the right-angle connecting assembly 3 through the rotation of the lead screw. The lower end of the right-angle connecting assembly 3 is connected to the filter mounting plate 5. The rotation of the lead screw motor 4 enables the filter mounting plate 5 to move linearly along the miniature guide rail 6, thereby achieving the switching of different filters. The filter plate mounting plate 5 is mounted on the miniature guide rail 6 and is fixed to the bottom surface of the guide rail mounting plate 2, achieving linear guidance for the movement of the filter plate mounting plate 5. The photoelectric sensor plate 8 is connected to the filter plate mounting plate 5. The movement of the filter plate mounting plate 5 drives the photoelectric sensor plate 8 to move. The sensor plate 9 generates a positioning electrical signal, which is transmitted to the lead screw motor control board to determine that the lead screw motor 4 has moved to the zero position and stops running.

[0028] Although specific embodiments of the present invention have been disclosed for illustrative purposes to aid in understanding and implementing the invention, those skilled in the art will understand that various substitutions, variations, and modifications are possible without departing from the spirit and scope of the invention and the appended claims. Therefore, the invention should not be limited to the content disclosed in the preferred embodiments, and the scope of protection claimed by the invention is defined by the claims.

Claims

1. An X-ray collimation and automatic filter replacement device, characterized in that, It includes a front collimation unit (1), a guide rail mounting plate (2), a lead screw motor (4), a filter mounting plate (5), and a miniature guide rail (6); The front end of the pre-collimation unit (1) is connected to the X-ray source emission port for collimating the input X-rays before outputting them; the rear end of the pre-collimation unit (1) is connected to the front end of the guide rail mounting plate (2); the guide rail mounting plate (2) is provided with a strip-shaped slit for outputting the X-rays collimated by the pre-collimation unit (1); The micro guide rails (6) are respectively provided on both sides of the rear end of the guide rail mounting plate (2); the filter plate mounting plate (5) is mounted on the micro guide rail (6) to provide linear guidance for the movement of the filter plate mounting plate (5); The filter mounting plate (5) is provided with a plurality of side-by-side filter elements, which are used to filter the X-rays output through the strip slit; The lead screw motor (4) is installed on one side of the guide rail mounting plate (2). The lead screw motor (4) is connected to the filter plate mounting plate (5) through a connecting component and is used to drive the filter plate mounting plate (5) to move linearly along the micro guide rail (6) to realize the switching of different filter plates.

2. The X-ray collimation and automatic filter replacement device according to claim 1, characterized in that, It also includes a photoelectric sensor plate (8), and a slotted photoelectric sensor (9) is provided on one side of the front end of the guide rail mounting plate (2); one end of the photoelectric sensor plate (8) is connected to the filter plate mounting plate (5), and the other end extends to the front end of the guide rail mounting plate (2). The photoelectric sensor plate (8) is driven to move by the movement of the filter plate mounting plate (5). When the photoelectric sensor plate (8) blocks the slotted photoelectric sensor (9), the zero position of the screw motor (4) is determined.

3. The X-ray collimation and automatic filter replacement device according to claim 1 or 2, characterized in that, The front end of the collimation unit (1) is provided with a frustum structure, which is used to embed inside the X-ray source emission port to shield X-ray scattered rays; The frustum structure has a slit in the middle for collimating the input X-rays before outputting them.

4. The X-ray collimation and automatic filter replacement device according to claim 3, characterized in that, The connecting component is a right-angle connecting component (3), and the lead screw motor (4) is installed on one side of the front end of the guide rail mounting plate (2); the upper end of the right-angle connecting component (3) is connected to the lead screw motor (4), and the lower end of the right-angle connecting component (3) is connected to the filter plate mounting plate (5).

5. The X-ray collimation and automatic filter replacement device according to claim 3, characterized in that, The filter mounting plate (5) is provided with multiple pairs of filter pressing plates (7). Each pair of filter pressing plates (7) is used to press down the two ends of a filter and fix it on the filter mounting plate (5).

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