Wear powder collecting device and CT (Computed Tomography) equipment

Abstract

The utility model relates to the field of CT equipment, the CT equipment involved in the embodiment of the utility model is provided with an abrasion powder collecting device, the abrasion powder collecting device is provided with a collecting box, an airflow channel and fan blades, and the airflow channel is formed on one side, facing an electric brush, of a slip ring and used for guiding air to flow from the centripetal side of the slip ring to the collecting box; the fan blades are arranged on the centripetal side of the sliding ring and rotate along with the sliding ring to push air to penetrate through the airflow channel to flow, and abrasion powder falling from the electric brush is collected into the collecting box. According to the embodiment of the utility model, the fan blades rotate along with the slip ring to generate directional airflow, and the air passes through the electric brush to effectively collect the abrasion powder falling from the electric brush into the collecting box, so that an additional fan is not needed, and the energy consumption and the noise are reduced.

Description

Technical Field

[0001] This utility model relates to a device for collecting abrasive powder. This utility model also relates to CT equipment. Background Technology

[0002] Figure 1 The location and structure of the wear powder collection device in traditional CT equipment were shown, combined with... Figure 1 When the CT equipment is running, the high-speed friction between the slip ring 1 and the brush 11 will generate abrasive powder, usually carbon powder. In order to collect these scattered abrasive powders as much as possible, conventional CT equipment has a collection box 12 installed on the outside of the brush 11 and is equipped with an outward-extracting fan to enhance the dust collection effect. However, the noise generated when the fan is working may make patients feel uncomfortable. Utility Model Content

[0003] The purpose of this invention is to provide an abrasive powder collection device and a CT device, which utilizes the high-speed rotation of the slip ring itself to generate airflow that drives the abrasive powder into the collection box, thereby eliminating the need for an additional fan and reducing energy consumption and noise.

[0004] To solve the above-mentioned technical problems, the wear powder collection device provided by this utility model includes: a collection box, which is disposed next to the brush and is used to collect wear powder; an airflow channel, which is formed on the side of the slip ring facing the brush and is used to guide air to flow from the centripetal side of the slip ring to the collection box; and a fan blade, which is disposed on the centripetal side of the slip ring and rotates with the slip ring to push air through the airflow channel to collect the wear powder falling on the brush into the collection box.

[0005] This invention also provides a wear powder collection device for CT equipment.

[0006] According to the above embodiments, the present invention uses fan blades that rotate with the slip ring to drive airflow and designs an airflow channel to guide air through the brush, effectively collecting the abrasive powder falling from the brush into the collection box, thus eliminating the need for an additional fan, reducing energy consumption, and lowering the noise of the CT equipment during operation. Attached Figure Description

[0007] Figure 1 A diagram showing the location and structure of the wear powder collection device in a traditional CT scanner.

[0008] Figure 2 This is a positional diagram of the abrasive powder collection device according to the first embodiment of this utility model, and the trajectory of air flowing into the collection box through the brush. The hollow arrow in the figure indicates the rotation direction of the slip ring, and the solid arrow in the figure indicates the airflow direction.

[0009] Figure 3This is a perspective view of the abrasive powder collection device according to the first embodiment of the present invention;

[0010] Figure 4 for Figure 3 A cross-sectional view along the AA direction. Figure 4 A structural diagram of the abrasive powder collection device according to the first embodiment of the present invention is shown, as well as the trajectory of air flowing into the collection box through the brush. The hollow arrow in the figure indicates the rotation direction of the slip ring, and the solid arrow in the figure indicates the air flow direction.

[0011] Figure 5 for Figure 3 A cross-sectional view along the BB direction. Figure 5 The structure of the outer guide plate near the brush in the first embodiment of this utility model is shown;

[0012] Figure 6 for Figure 3 A cross-sectional view along the CC direction. Figure 6 The structure of the outer guide plate away from the brush in the first embodiment of this utility model is shown;

[0013] Figure 7 The shape of the sealing ring in the first embodiment of this utility model is shown. Figure 7 This is the view of the cross-section of the sealing ring;

[0014] Figure 8 The shape of the sealing ring in the fourth embodiment of this utility model is shown. Figure 8 This is the view of the cross-section of the sealing ring;

[0015] Figure 9 These are diagrams showing four possible positions and angles of the fan blades of this utility model. Figure 9 This is the axial view of the inner guide vane. The hollow arrows in the figure indicate the rotation direction of the slip ring. Figure 9 (A) is a diagram showing the position and angle of the fan blades in the first embodiment. Figure 9 (B) is a diagram showing the position and angle of the fan blades in the second embodiment. Figure 9 (C) is a diagram showing the position and angle of the fan blades in the third embodiment. Figure 9 (D) is a diagram showing the position and angle of the fan blades in the fourth embodiment;

[0016] Figure 10 This is a diagram showing the shape of the air intake and the angle of the fan blades in the fifth embodiment of this utility model. Figure 10 The diagram shows the radial view of the inner guide vane. The hollow arrows in the diagram indicate the rotation direction of the slip ring, while the solid arrows indicate the airflow direction.

[0017] Figure 11 This is a structural diagram of the air deflector according to the sixth embodiment of this utility model. Figure 11The image shows the axial view of the slip ring, with the solid arrows indicating the direction of airflow. Detailed Implementation

[0018] The present invention will now be described with reference to the embodiments shown in the accompanying drawings. The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.

[0019] Figure 1 The location and structure of the wear powder collection device in traditional CT equipment were shown, combined with... Figure 1 When the CT equipment is running, the high-speed friction between the slip ring 1 and the brush 11 will generate abrasive powder, usually carbon powder. In order to collect these scattered abrasive powders as much as possible, conventional CT equipment has a collection box 12 installed on the outside of the brush 11 and is equipped with an outward-extracting fan to enhance the dust collection effect. However, the noise generated when the fan is working may make patients feel uncomfortable.

[0020] To address this issue, a wear powder collection device is provided below, which is applied to the connection between the slip ring 1 and the brush 11 of a CT device. The device aims to utilize the kinetic energy of the high-speed rotation of the slip ring 1 to generate an airflow that carries wear powder into the collection box 12, thereby eliminating the need for a fan in traditional wear powder collection devices.

[0021] (First embodiment)

[0022] Figure 2 The location of the wear powder collection device of the CT equipment of this utility model is shown, as well as the trajectory of air flowing into the collection box 12 through the brush 11. The hollow arrow in the figure is the rotation direction of the slip ring 1, and the solid arrow in the figure is the air flow direction.

[0023] Combination Figure 2 The grinding powder collection device has the following features:

[0024] The collection box 12 is located next to the brush 11 and is used to collect abrasive powder;

[0025] An airflow channel is formed on the side of the slip ring 1 facing the brush 11, and is used to guide air to flow from the centripetal side of the slip ring 1 to the collection box 12;

[0026] The fan blade 5 is located on the centripetal side of the slip ring 1. It rotates with the slip ring 1 to push air through the airflow channel and collect the abrasive powder falling from the brush 11 into the collection box 12.

[0027] The slip ring 1 is covered with a flow guide shroud on the side facing the brush 11, and the gap between the flow guide shroud and the slip ring 1 forms an airflow channel.

[0028] Figure 3 , Figure 4 , Figure 5 and Figure 6 The structure of the wear powder collection device for CT equipment of this utility model is shown, wherein... Figure 4 The trajectory of air flowing through brush 11 into collection box 12 was also shown. Figure 4 The hollow arrow in the diagram indicates the direction of rotation for slip ring 1. Figure 4 The solid arrows in the diagram indicate the direction of airflow.

[0029] Combination Figure 4 In this embodiment, the airflow is driven by the fan blades 5 that rotate with the slip ring 1, and the air guide is designed to guide the air through the brush 11, effectively collecting the abrasive powder falling on the brush 11 into the collection box 12 outside the slip ring 1. This design eliminates the need for the fan installed outside the collection box 12 in traditional CT equipment, reducing energy consumption and lowering the noise of the CT equipment during operation.

[0030] Specifically, the fairing includes an inner guide plate 2, an outer guide plate 3, and a sealing ring 4.

[0031] The inner guide plate 2 is cylindrical and is coaxially arranged on the centripetal side of the slip ring 1. The outer guide plate 3 is arranged on the centrifugal side of the inner guide plate 2. The outer guide plate 3 is shaped along the contour line of the inner guide plate 2 and the centrifugal side of the brush 11. The outer guide plate 3 does not contact the inner guide plate 2. The sealing ring 4 covers the end of the inner guide plate 2 and the outer guide plate 3 away from the slip ring 1. The gap between the inner guide plate 2, the outer guide plate 3, the sealing ring 4 and the slip ring 1 forms an airflow channel.

[0032] An inlet 21 is formed on the inner guide plate 2, which allows air to enter the airflow channel from the centripetal side of the inner guide plate 2. A first exhaust hole 31 is formed on the outer guide plate 3, and the inlet of the collection box 12 is connected to the first exhaust hole 31, which allows air to flow out from the airflow channel to the collection box 12.

[0033] Combination Figure 4 , Figure 5 and Figure 6 The outer guide plate 3 includes a first reflector plate 32 coaxially disposed on the centrifugal side of the inner guide plate 2, a second reflector plate 33 coaxially disposed on the centrifugal side of the brush 11, and a connecting plate 34 connecting the first reflector plate 32 and the second reflector plate 33. The diameter of the first reflector plate 32 is smaller than the diameter of the second reflector plate 33. The two ends of the first reflector plate 32 are respectively connected to the two ends of the second reflector plate 33 through the two connecting plates 34.

[0034] Since the second reflector 33 in the first embodiment is penetrated by the first exhaust hole 31, therefore Figure 4, Figure 5 and Figure 6 The second reflector 33 was not shown.

[0035] The first reflector 32 is close to the inner guide plate 2, while the second reflector 33 is far from the inner guide plate 2. This design allows the airflow channel far from the brush 11 to have a smaller cross-section, thereby increasing the internal air pressure of the airflow channel and thus increasing the airflow speed inside the airflow channel.

[0036] The air inlet 21 is evenly distributed around the inner guide plate 2, and the first exhaust port 31 is located on the side of the brush 11 away from the axis of the slip ring 1. The air in the airflow channel passes through the brush 11 along the centrifugal direction and enters the collection box 12.

[0037] The sealing ring 4 covers the inner guide plate 2 and the outer guide plate 3 at the end away from the slip ring 1, and the brush 11 is set inside the airflow channel.

[0038] The inner guide plate 2 can be bolted to the slip ring 1, so that the inner guide plate 2 can rotate synchronously with the slip ring 1. At the same time, the inner guide plate 2 can be disassembled for maintenance. The fan blade 5 can be integrally formed with the inner guide plate 2, thereby reducing the number of components; or, the fan blade 5 can be installed as an independent component on the inner guide plate 2, thereby increasing design flexibility. The number of fan blades 5 is greater than or equal to 1, and multiple fan blades 5 are evenly distributed around the axis of the inner guide plate 2.

[0039] The sealing ring 4 can be integrally formed with the outer guide plate 3, or other connection methods can be used, as long as they can effectively cover the gap between the inner guide plate 2 and the outer guide plate 3.

[0040] Figure 7 The shape of sealing ring 4 was shown. Figure 7 This is a cross-sectional view of the sealing ring 4, combined with Figure 7 The sealing ring 4 includes an inner cover plate 41 and an outer cover plate 42.

[0041] The inner cover plate 41 is connected to the end of the inner guide plate 2 and extends radially toward the outer guide plate 3. The outer cover plate 42 is connected to the end of the outer guide plate 3 and extends radially toward the inner guide plate 2. The outer cover plate 42 is higher than the inner cover plate 41, and the outer cover plate 42 and the inner cover plate 41 partially overlap in the axial direction of the sealing ring 4, forming an annular gap between the outer cover plate 42 and the inner cover plate 41.

[0042] The gap between the outer cover plate 42 and the inner cover plate 41 is used to ensure that the outer cover plate 42 and the inner cover plate 41 do not contact each other when the slip ring 1 rotates at high speed, thereby ensuring that there is no mutual friction between the rotating slip ring 1, the inner guide plate 2, the fan blade 5, the inner cover plate 41 and the stationary outer guide plate 3 and the outer cover plate 42. At the same time, abrasive powder is difficult to pass through the gap between the outer cover plate 42 and the inner cover plate 41. This design is used to avoid mutual friction between the rotating part and the stationary part.

[0043] Figure 9 Four selectable positions and angles for fan blade 5 are shown. Figure 9 The figure shows the axial view of the inner guide plate 2. The hollow arrow in the figure indicates the rotation direction of the slip ring 1. The fan blade 5 is fixedly connected to the inner guide plate 2. The fan blade 5 is located on the centripetal or centrifugal side of the inner guide plate 2. The fan blade 5 extends in the direction of rotation of the slip ring 1 or in the opposite direction.

[0044] Combination Figure 9 (A) One side of the fan blade 5 is fixedly connected to the inner guide plate 2, and the other side of the fan blade 5 faces the centripetal side of the inner guide plate 2 and extends in the direction of rotation of the slip ring 1.

[0045] When the fan blade 5 located on the centripetal side of the inner guide plate 2 rotates, it pushes the air on the centripetal side of the inner guide plate 2 to move along its own normal direction, forming a high-pressure zone on the centripetal side of the inner guide plate 2, driving the air through the air inlet 21 to move into the interior of the airflow channel. The air performs a circular motion along the airflow channel, and flows into the collection box 12 through the brush 11 when passing through the first exhaust port 31.

[0046] The air inlet 21 can be rectangular, and the fan blade 5 can be parallel to the axis of the inner guide plate 2. Preferably, the air inlet 21 is located in the normal direction of the fan blade 5, and one side of the fan blade 5 is connected to the edge of the air inlet 21, so that the air pushed by the fan blade 5 directly passes through the air inlet 21 and enters the interior of the airflow channel, thereby reducing the friction between the air on the centripetal side of the inner guide plate 2 and the inner guide plate 2.

[0047] (Second Embodiment)

[0048] The second embodiment differs from the first embodiment in that: [combination] Figure 9 (B) One side of the fan blade 5 is fixedly connected to the inner guide plate 2, and the other side of the fan blade 5 faces the centrifugal side of the inner guide plate 2 and extends in the direction of rotation of the slip ring 1.

[0049] When the fan blade 5 located on the centrifugal side of the inner guide plate 2 rotates, it pushes the air on the centrifugal side of the inner guide plate 2 to move along its own normal direction, driving the air to perform a circular motion along the airflow channel, and when passing through the first exhaust hole 31, it flows through the brush 11 into the collection box 12, thereby forming a low-pressure area on the centrifugal side of the inner guide plate 2, attracting air to move through the air inlet 21 into the interior of the airflow channel.

[0050] (Third embodiment)

[0051] The third embodiment differs from the first embodiment in that: [combination] Figure 9 (C) One side of the fan blade 5 is fixedly connected to the inner guide plate 2, and the other side of the fan blade 5 faces the centripetal and centrifugal sides of the inner guide plate 2 and extends in the direction of rotation of the slip ring 1.

[0052] When the fan blades 5 located on the centripetal and centrifugal sides of the inner guide plate 2 rotate, they push the air on the centripetal and centrifugal sides of the inner guide plate 2 to move along their own normal direction, causing the air to perform a circular motion along the airflow channel, and when passing through the first exhaust hole 31, it flows through the brush 11 into the collection box 12, thereby forming a high-pressure zone on the centripetal side of the inner guide plate 2 and a low-pressure zone on the centrifugal side of the inner guide plate 2, attracting air to move through the air inlet 21 into the interior of the airflow channel.

[0053] (Fourth embodiment)

[0054] Combination Figure 9 (D) The fourth embodiment differs from the first embodiment in that: one side of the fan blade 5 is fixedly connected to the inner guide plate 2, and the other side of the fan blade 5 extends toward the centrifugal side of the inner guide plate 2 and toward the opposite direction of the rotation of the slip ring 1.

[0055] When the fan blade 5 located on the centrifugal side of the inner guide plate 2 rotates, it pushes the air on the centrifugal side of the inner guide plate 2 to move along its own normal direction, driving the air to perform a circular motion along the airflow channel, and when passing through the first exhaust hole 31, it flows through the brush 11 into the collection box 12, thereby forming a low-pressure area on the centrifugal side of the inner guide plate 2, attracting air to move through the air inlet 21 into the interior of the airflow channel.

[0056] also, Figure 8 Another shape of sealing ring 4 was shown. Figure 8 This is a cross-sectional view of the sealing ring 4, combined with Figure 8 The fourth embodiment differs from the first embodiment in that: the sealing ring 4 is connected to the end of the outer guide plate 3 and extends radially toward the inner guide plate 2. A circular gap is formed between the inner ring of the sealing ring 4 and the end of the inner guide plate 2. This gap is used to ensure that there is no mutual friction between the rotating slip ring 1, the inner guide plate 2, the fan blade 5 and the stationary outer guide plate 3 and the sealing ring 4.

[0057] (Fifth Embodiment)

[0058] Figure 10 The shape of the air intake 21 and the angle of the fan blade 5 are shown. Figure 10The figure shows the radial view of the inner guide plate 2. The hollow arrow in the figure indicates the rotation direction of the slip ring 1, and the solid arrow in the figure indicates the airflow direction.

[0059] The fifth embodiment is based on the fourth embodiment, combined with... Figure 10 One side of the fan blade 5 is fixedly connected to the inner guide plate 2, and the other side of the fan blade 5 extends toward the centrifugal side of the inner guide plate 2. The fan blade 5 is inclined to the axis of the inner guide plate 2, so that when the fan blade 5 rotates, it generates an airflow that drives the abrasive powder closer to the slip ring 1.

[0060] When the fan blade 5 rotates, it pushes the air on the centrifugal side of the inner guide plate 2 to move along its own normal direction, driving the air to perform a circular motion along the airflow channel. At the same time, it drives the air away from the sealing ring 4 to prevent abrasive powder from passing through the gap between the sealing ring 4 and the inner guide plate 2.

[0061] Preferably, the air inlet 21 is trapezoidal, and the fan blades 5 extending toward the centrifugal side of the inner guide plate 2 are installed on the inclined side of the air inlet 21, so that the air entering the airflow channel through the trapezoidal air inlet 21 is directly pushed by the inclined fan blades 5, thereby improving the efficiency of the fan blades 5 in pushing the air.

[0062] (Sixth embodiment)

[0063] Figure 11 One structure of the fairing was shown. Figure 11 The figure shows the axial view of slip ring 1, with the solid arrows indicating the direction of airflow.

[0064] The sixth embodiment is based on any one of the embodiments in the first, second, third, fourth, and fifth embodiments, combined with... Figure 11 The sixth embodiment differs from any of the above embodiments in that:

[0065] The first exhaust port 31 is removed, and a second exhaust port 35 is provided on the side of the brush 11 facing the rotation direction of the slip ring 1. The inlet of the collection box 12 is connected to the second exhaust port 35, and the air in the airflow channel passes through the brush 11 and enters the collection box 12 along the rotation direction of the slip ring 11.

[0066] Since one of the connecting plates 34 in the sixth embodiment is penetrated by the second vent 35, therefore, Figure 11 The connecting plate 34 below the brush 11 is not shown in the image.

[0067] This design allows air to flow along the U, V, and W phases of the brush 11, effectively collecting the wear powder falling off the brush 11 into the collection box 12 below the brush 11. This reduces the accumulation of wear powder between phases and lowers the risk of discharge breakdown caused by a decrease in the interphase resistance of the brush 11.

[0068] In addition, the flow guide also includes an intermediate flow guide plate 6, which is disposed between the inner flow guide plate 2 and the brush 11. The intermediate flow guide plate 6 is used to prevent air from passing through the brush 11 in the centrifugal direction, thereby more effectively guiding the air to flow in the airflow channel along the arrangement direction of each phase of the brush 11, and further reducing the abrasive powder accumulated between the phases.

[0069] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include undisclosed common knowledge or customary techniques in the art. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0070] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. Abrasion powder collecting device, characterized in that have: A collection box, located next to the brush, is used to collect abrasive powder; An airflow channel, formed on the side of the slip ring facing the brush, is used to guide airflow from the centripetal side of the slip ring to the collection box; The fan blades are located on the centripetal side of the slip ring and rotate with the slip ring to push air through the airflow channel, collecting the abrasive powder falling from the brush into the collection box.

2. The grinding powder collecting device according to claim 1, characterized in that, The slip ring facing the brush is covered with a flow guide, and the gap between the flow guide and the slip ring forms the airflow channel.

3. The grinding powder collecting device according to claim 2, characterized in that, The air deflector includes an inner air deflector plate, an outer air deflector plate, and a sealing ring; The inner guide plate is fixedly connected to the centripetal side of the slip ring; The outer guide plate is disposed on the centrifugal side of the inner guide plate, and the outer guide plate does not contact the inner guide plate; The sealing ring covers the inner guide plate and the outer guide plate at the end away from the slip ring; The gap between the inner guide plate, the outer guide plate, the sealing ring, and the slip ring forms the airflow channel.

4. The grinding powder collecting device according to claim 3, characterized in that, The inner guide plate is cylindrical in shape and is coaxially connected to the slip ring. A through air inlet is formed on the inner guide plate, which allows air to enter the airflow channel from the centripetal side of the inner guide plate.

5. The grinding powder collecting device according to claim 4, characterized in that, The outer guide plate is shaped to follow the outline of the inner guide plate and the centrifugal side of the brush. A through exhaust hole is formed on the outer guide plate. The inlet of the collection box is connected to the exhaust hole, and the exhaust hole allows air to flow out from the airflow channel to the collection box.

6. The grinding powder collecting device according to claim 5, characterized in that, The outer guide plate includes a first reflector plate coaxially disposed on the centrifugal side of the inner guide plate and a second reflector plate coaxially disposed on the centrifugal side of the brush. The diameter of the first reflector plate is smaller than the diameter of the second reflector plate. The two ends of the first reflector plate are respectively connected to the two ends of the second reflector plate through two connecting plates.

7. The grinding powder collecting device according to claim 6, characterized in that, The exhaust port extends through the second reflector.

8. The grinding powder collecting device according to claim 6, characterized in that, The connecting plate, located on the side of the brush facing the direction of rotation of the slip ring, is penetrated by the vent hole.

9. The grinding powder collecting device according to claim 8, characterized in that, The air guide cover also includes an intermediate air guide plate, which is disposed between the inner air guide plate and the brush. The intermediate air guide plate is used to prevent air from passing through the brush in a centrifugal direction.

10. The grinding powder collecting device according to any one of claims 3-9, characterized in that, The sealing ring is connected to the end of the outer guide plate and extends radially toward the inner guide plate, with an annular gap formed between the inner ring of the sealing ring and the end of the inner guide plate.

11. The grinding powder collecting device according to any one of claims 3-9, characterized in that, The sealing ring includes an inner cover plate and an outer cover plate. The inner cover plate is connected to the end of the inner guide plate, and the outer cover plate is connected to the end of the outer guide plate. The outer cover plate is higher than the inner cover plate, and the outer cover plate and the inner cover plate partially overlap, forming an annular gap between the outer cover plate and the inner cover plate.

12. The grinding powder collecting device according to any one of claims 4-9, characterized in that, One side of the fan blade is fixedly connected to the inner guide plate, and the other side of the fan blade faces the centripetal side and / or centrifugal side of the inner guide plate and extends in the direction of rotation of the slip ring.

13. The grinding powder collecting device according to claim 12, characterized in that, The air inlet is located in the normal direction of the fan blade, and one side of the fan blade is connected to the edge of the air inlet.

14. The grinding powder collecting device according to any one of claims 4-9, characterized in that, One side of the fan blade is fixedly connected to the inner guide plate, and the other side of the fan blade faces the centrifugal side of the inner guide plate and extends in the opposite direction to the rotation direction of the slip ring.

15. The grinding powder collecting device according to claim 14, characterized in that, The fan blades are inclined to the axis of the inner guide plate, so that when the fan blades rotate, they generate an airflow that drives the abrasive powder closer to the slip ring.

16. The grinding powder collecting device according to claim 15, characterized in that, The air intake is trapezoidal, and the fan blades are mounted on the oblique side of the air intake.

17. A CT scanner, characterized in that, The abrasive powder collection device includes any one of claims 1-16.

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