CN116571511B - Dust collection device and method of medical imaging equipment and medical imaging equipment - Google Patents
Dust collection device and method of medical imaging equipment and medical imaging equipment Download PDFInfo
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- CN116571511B CN116571511B CN202310863133.0A CN202310863133A CN116571511B CN 116571511 B CN116571511 B CN 116571511B CN 202310863133 A CN202310863133 A CN 202310863133A CN 116571511 B CN116571511 B CN 116571511B
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- dust collection
- belt
- slip ring
- medical imaging
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- 239000000428 dust Substances 0.000 title claims abstract description 289
- 238000002059 diagnostic imaging Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000010408 sweeping Methods 0.000 claims abstract description 48
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 238000001179 sorption measurement Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 238000002591 computed tomography Methods 0.000 description 25
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4423—Constructional features of apparatus for radiation diagnosis related to hygiene or sterilisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The application provides a dust collection device and method of medical imaging equipment and the medical imaging equipment. The dust collection device is arranged downstream of the carbon brush in the running direction of the slip ring, and includes: an insulating support; an insulating dust collecting belt mounted to the bracket such that a surface of the dust collecting belt is proximate to a contact surface of the slip ring with the carbon brush, the dust collecting belt being connected to a motor fixed to the bracket to continuously rotate such that a first surface of the dust collecting belt and a second surface opposite to the first surface alternately face the contact surface of the slip ring; a power transmitting member connected to a direct current power source, arranged to contact the dust collection belt to supply electric charges to the dust collection belt, such that electrostatic charges are accumulated on the dust collection belt to collect dust by electrostatic adsorption; a dust sweeping member disposed at an opposite side of the dust collection belt to the slip ring and contacting a surface of the dust collection belt; and a dust collecting member mounted to the bracket and positioned below the dust sweeping member. The dust collection device and the dust collection method of the application can efficiently and conveniently collect dust by utilizing the electrostatic adsorption principle.
Description
Technical Field
The present application relates to the field of medical devices, in particular dust collection in medical equipment.
Background
Modern medicine provides advanced medical equipment for checking the health condition of a human body, and medical imaging equipment is equipment capable of intuitively providing the health condition of the human body. The medical imaging device scans the human body by using rays to obtain scanning data of the human body part, and the scanning data are converted into images of the human body part through the data processing device, so that the health condition of the human body is intuitively observed. Medical imaging devices currently on the market include CT (Computed Tomography ), MRI (Magnetic Resonance Imaging, magnetic resonance imaging), PET (Positron Emision Tomograph, positron emission computed scanning), CT-MR, PET-CT, and PET-MR.
The medical imaging equipment uses the slip ring technology to obtain high-quality images, and the slip ring technology uses a sliding annular circuit to transmit data signals and power, so that continuous spiral scanning can be realized. The slip ring is matched with the carbon brush for use, and data signals on the slip ring (rotating body) are transmitted to data processing equipment (a computer) through the carbon brush (a fixed body). In the running process of the slip ring, carbon powder is generated by friction between the carbon brush and the slip ring, and the generated carbon powder can influence the normal running of the image equipment. For example, carbon powder can be accumulated at the root of the carbon brush to pollute other electric appliance working parts in the area; part of carbon powder is adsorbed between conducting rings of the slip ring along with the rotation of the slip ring, and the accumulation of the carbon powder over time easily causes ignition between loops of the slip ring to cause faults; the scattering of the carbon powder in the image equipment is not concentrated, and the carbon powder can be scattered on all parts in the equipment due to the air flow in the running process of the equipment, so that the cleaning is difficult. The current device for collecting carbon powder is limited to a blowing device such as a fan or a dust collecting device for collecting or transferring the carbon powder, however, the arrangement of the internal structure of the image equipment makes the air duct not completely closed, and even the carbon powder pollution is aggravated for part of the structure on the collecting air duct in the carbon powder collecting process.
Accordingly, there is a need to provide improved toner collection devices and related methods.
Disclosure of Invention
The application aims to provide an improved dust collection mode of medical imaging equipment, which can simply, quickly and efficiently collect dust in the imaging equipment.
In order to achieve the above object, a first aspect of the present application provides a dust collection device of a medical imaging apparatus, the medical imaging apparatus comprising: the slip ring that can reciprocal continuous rotation and with the carbon brush of slip ring contact in order to transmit data signal, dust collection device arranges the low reaches at the carbon brush relative to the direction of operation of slip ring, and dust collection device includes:
the insulating bracket is arranged on the shell of the slip ring;
an annular insulating dust collecting belt mounted to the bracket such that a surface of the dust collecting belt is proximate to a contact surface of the slip ring with which the carbon brush contacts to collect dust from the contact surface, the dust collecting belt being connected to a motor fixed to the bracket to rotate continuously such that a first surface of the dust collecting belt and a second surface opposite to the first surface alternately face the contact surface of the slip ring;
a power feeding member connected to a direct current power supply to obtain electric charges, arranged to contact the dust collection belt to supply the electric charges to the dust collection belt, so that the dust collection belt accumulates electrostatic charges thereon to collect dust from the slip ring by electrostatic adsorption;
a dust sweeping member disposed at an opposite side of the dust collection belt to the slip ring and contacting a surface of the dust collection belt to sweep the collected dust from the dust collection belt; and
and a dust collecting member mounted to the bracket and located below the dust sweeping member to collect dust swept from the dust collecting belt.
Optionally, the dust collection device comprises at least one dust collection device arranged at intervals along the circumference of the slip ring, one of the at least one dust collection device being adjacent to the carbon brush.
Optionally, the dust collecting belt is connected with the motor through an annular insulating driving belt.
Optionally, the dust sweeping member is made of a conductive material or a hydrophilic material.
Optionally, the dust sweeping member is grounded through a grounding element.
Optionally, the direct current power supply provides 10-15 Kv voltage, the positive pole of the direct current power supply is connected with the power transmission component, and the negative pole of the direct current power supply is grounded.
Optionally, a potentiometer is provided between the direct current power supply and the power transmitting member.
Alternatively, the power feeding member is configured as a power feeding comb, a power feeding brush, or a power feeding terminal, the dust sweeping member is configured as a dust sweeping brush or a flexible dust sweeping sheet, and the dust collecting member is configured as a dust collecting case or a dust collecting tray.
According to a second aspect of the present application, there is provided a dust collection method of a medical imaging apparatus, the medical imaging apparatus comprising: the slip ring capable of reciprocating and continuously rotating and the carbon brush contacted with the slip ring to transmit data signals, and the dust collecting method comprises the following steps:
providing an annular insulating dust collection belt, and arranging the dust collection belt to be close to the contact surface of the slip ring, which is contacted with the carbon brush, on the surface of the dust collection belt;
supplying electric charge to the dust collection belt through a power transmitting member connected to the direct current power supply and arranged in contact with the dust collection belt, so that electrostatic charge is accumulated on the dust collection belt to collect dust from the slip ring by electrostatic adsorption;
driving the dust collection belt to continuously rotate by a motor so that a first surface of the dust collection belt and a second surface opposite to the first surface alternately face a contact surface of the slip ring to continuously collect dust from the slip ring;
sweeping the collected dust from the dust collection belt by a dust sweeping member disposed on an opposite side of the dust collection belt with respect to the slip ring and in contact with the dust collection belt; and
dust swept from the dust collection belt is collected by a dust collection member disposed below the dust collection member.
According to a third aspect of the present application, a medical imaging device is presented comprising the dust collection apparatus according to the first aspect of the present application, the medical imaging device being a CT device, an MRI device, a PET-CT device, a CT-MR or a PET-MR device.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects: the electrostatic adsorption principle is used for efficiently and conveniently collecting carbon powder on the slip ring and the carbon brush and carbon powder floating in medical imaging equipment such as CT equipment; the wind power device is not additionally arranged, so that the heat dissipation air duct inside the equipment and the heat dissipation of the parts inside the equipment are not influenced; collecting carbon powder in real time, and reducing the dispersion of the carbon powder in the internal space of the image equipment; the good dust collection effect is beneficial to the use of the imaging equipment combination in a composite operating room.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application. In the drawings:
FIG. 1 is a schematic view of a dust collection device according to an embodiment of the present application disposed on a slip ring of a medical imaging apparatus;
FIG. 2 illustrates the slip ring direction of operation of a medical imaging device according to an embodiment of the present application;
fig. 3 is a partial enlarged view of the dust collecting device and the carbon brush portion in fig. 1 according to the embodiment of the present application; and
fig. 4 is a schematic view of the constitution of a dust collecting device according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Hereinafter, an exemplary embodiment according to the present application will be described with reference to fig. 1 to 4.
The existing medical imaging equipment mostly uses wind power to suck or scrape to collect carbon powder on the slip ring and other tiny dust in the equipment in a non-contact or contact mode. Wind power extraction and dust collection requires the placement of additional fans, which will change the originally designed air duct inside the device, and the heat dissipation inside the imaging device. Scraping the collected dust can abrade the surface of the slip ring, which is detrimental to the service life of the device. In accordance with the principles of the present application, a non-contact electrostatic dust adsorbing apparatus and method are provided.
The embodiments herein will be described by taking a conventional CT apparatus as an example. Also, it should be appreciated that the embodiments described with respect to the CT apparatus may be applied directly or in a modified manner known to those skilled in the art to other medical imaging apparatuses.
CT equipment is medical imaging equipment widely used at present, and the CT equipment utilizes accurate alignment wire harness and detector to scan around the cross section of human body, so that the CT equipment can be used for screening various diseases in the medical field and detecting equipment and products in the industrial field.
Fig. 1 shows a slip ring device for acquiring data in a CT apparatus, and specifically includes a slip ring 10 capable of reciprocally and continuously rotating and a carbon brush 20 in contact with the slip ring 10 to transmit data signals. The slip ring device is shown in fig. 1 also equipped with a dust collection device 30 according to the application. In fig. 2, the dust collection device 30 is shown arranged downstream of the carbon brushes 20 with respect to the running direction of the slip ring 10 (indicated by the arrow in fig. 2), the area of the slip ring 10 through which the carbon brushes 20 slide will then be rotated to the position of the dust collection device 30, and the dust collection device 30 will collect carbon dust and other fine dust on the slip ring 10. The dust collection device 30 of the present application can also collect minute dust in the internal space of the CT apparatus, which will be described in detail later.
Fig. 3 shows a partial enlarged view of the dust collecting device 30 and the carbon brush 20 portion in fig. 1, and fig. 4 shows a construction view of the dust collecting device 30. It should be appreciated that the construction diagram of fig. 4 is intended to illustrate the manner in which the dust collection device 30 is constructed, wherein the actual positional relationship of the individual constituent components of the dust collection device 30 is not shown.
The dust collection device 30 of the present application generally includes: an insulating holder 31, an annular insulating dust collecting belt 32B, a power transmitting member 33, a dust sweeping member 34, and a dust collecting member 35.
The bracket 31 may be mounted on a housing (not shown) of the slip ring 10 or on other fixed components in the vicinity of the slip ring 10, and the mounting position may be determined according to the actual arrangement of the components. The support 31 serves as an integral support structure for the dust collection device 30. The dust collection belt 32B is mounted to the bracket 31 such that a surface of the dust collection belt 32B is proximate to a contact surface 10A of the slip ring 10 that is in contact with the carbon brush 20, and the dust collection belt 32B is electrostatically charged to collect the carbon powder 20A from the contact surface 10A, as will be described later in detail. The dust collecting belt 32B is constructed in a ring shape for continuously collecting the toner 20A from the slip ring 10, the dust collecting belt 32B is connected to a motor 37 fixed to the holder 31 to continuously rotate, and as the dust collecting belt 32B rotates, a first surface and a second surface opposite to the first surface of the dust collecting belt 32B alternately face the contact surface 10A of the slip ring 10, continuously collecting the toner 20A from the slip ring 10. According to the present application, the holder 31 is made of an insulating material in order to prevent the holder 31 from conducting the electrostatic charge on the dust collection belt 32B away while preventing the electrostatic charge from affecting the normal operation of the electronic components on the holder 31, such as the motor 37. The dust collecting belt 32B is made of an insulating material for the purpose of accumulating electrostatic charges thereon, and is not conducted to other adjacent parts, so that the dust collecting belt 32B is ensured to have a sufficient electrostatic attraction force.
The power transmitting member 33 is for supplying electric charges to the dust collecting belt 32B. As shown preferably in fig. 4, the power transmitting member 33 is connected to the dc power supply 36 to obtain electric charges, and contacts the dust collecting belt 32B to supply the electric charges obtained from the dc power supply 36 to the dust collecting belt 32B, the electric charges are accumulated as electrostatic charges on the dust collecting belt 32B and form an electrostatic field, whereby the dust collecting belt 32B collects the toner 20A from the slip ring 10 by electrostatic adsorption. The principle of electrostatic dust adsorption is that a large amount of electrostatic charges (e.g., positive charges) on the dust collecting belt 32B provide high voltage, so that the toner 20A near the dust collecting belt 32B is induced to generate charges (e.g., negative charges) opposite to the electrostatic charges, and the toner 20A induced to generate opposite charges is adsorbed to the dust collecting belt 32B due to the principle of opposite attraction.
The dust sweeping member 34 is used for sweeping the carbon powder 20A on the dust collecting belt 32B, and maintains the optimal adsorption effect of the dust collecting belt 32B. The dust sweeping member 34 is arranged to contact the surface of the dust collecting belt 32B to sweep the toner 20A in a contact manner. As shown in fig. 3, the dust sweeping member 34 is located on the opposite side of the dust collecting belt 32B with respect to the slip ring 10, that is, the slip ring 10 and the dust sweeping member 34 are located on opposite sides of the dust collecting belt 32B, whereby after the first surface of the dust collecting belt 32B facing the slip ring 10 collects the toner 20A, the dust sweeping member 34 is turned with the driving of the motor 37, and at this time the dust sweeping member 34 sweeps the collected toner 20A from the first surface of the dust collecting belt 32B. Meanwhile, the second surface of the dust collection belt 32B rotates to face the slip ring 10, continuing to collect the toner 20A from the slip ring 10.
The dust collecting member 35 is for collecting the toner 20A swept by the dust sweeping member 34. The dust collection member 35 may be mounted to the bracket 31 and positioned below the dust collection member 34 to collect the toner 20A swept from the dust collection belt 32B.
During operation of the slip ring 10 in the rotational direction indicated by the arrow in fig. 2, the slip ring 10 rubs against the carbon brush 20 to generate the carbon powder 20A. A part of carbon powder 20A is gathered between the carbon brush 20 and the slip ring 10, if the part of carbon powder 20A is not removed in time, the part of carbon powder 20A is accumulated on the carbon brush 20 due to the action of gravity, and another part of carbon powder 20A is attached to the slip ring 10 and rotates along with the slip ring 10 to float to the inner cavity of the whole CT equipment. The toner collecting device 30 according to the present application is capable of efficiently collecting the toner 20A, providing many advantages over existing dust collecting methods, in particular:
actively collecting carbon powder 20A near the carbon brush 20 and attached to the slip ring 10 in real time through electrostatic adsorption, and floating the carbon powder 20A in the CT equipment due to the operation of the slip ring 10 and the influence of an air channel in the CT equipment;
not only can the carbon powder 20A in the CT equipment be efficiently collected, but also other tiny dust in the internal space of the CT equipment can be effectively collected within the action range of electrostatic adsorption force;
through electrostatic adsorption of the carbon powder 20A, other fans are not additionally added, the original designed heat dissipation air duct inside the CT equipment is not influenced, and the influence on equipment heat dissipation due to the blockage of the heat dissipation air duct is prevented;
collecting the collected carbon powder 20A into a built-in dust collecting member 35, wherein the dust collecting member 35 provides a relatively closed dust storage space, and the carbon powder 20A is collected therein, so that the cleaning is convenient;
good collecting effect of the carbon powder 20A provides excellent conditions for loading the CT equipment into clean rooms such as a composite operating room.
Next, further aspects of the dust collection device 30 of the present application will be described with continued reference to fig. 3 and 4.
According to one embodiment, the dust collection device 30 may comprise at least one dust collection device 30, such as one, three, five, or even more, arranged at intervals along the circumference of the slip ring 10. In the case of one dust collection device 30, the dust collection device 30 is arranged adjacent to the carbon brush 20; in the case of a plurality of dust collecting devices 30, one of the dust collecting devices 30 is disposed adjacent to the carbon brush 20. That is, there should be one adjacent carbon brush 20 in at least one dust collecting device 30, which is arranged to collect the carbon powder 20A in real time at the source of the carbon powder 20A, to minimize the accumulation of the carbon powder 20A on the carbon brush 20 and the adhesion to the slip ring 10, and to prevent the carbon powder 20A from floating inside the CT apparatus and polluting the electrical components inside the CT apparatus.
In the embodiment of fig. 3, dust collection belt 32B is connected to motor 37 by endless belt 32A, and the power of motor 37 is transmitted via belt 32A to achieve a variable speed, providing a safe distance to prevent static electricity from interfering with the operation of motor 37. Meanwhile, in the present application, the provision of the belt 32A contributes to achieving a more compact structure in the lateral direction. In this regard, the belt 32A may be a narrow belt disposed on both sides of the dust collecting belt 32B, and the motor 37 is disposed between the belts 32A on both sides, below the dust collecting belt 32B. In contrast, the dust collection belt 32B is constructed as a wide belt, the width of which may be comparable to the width of the slip ring 10, to cover the lateral width of the slip ring 10, and to collect the toner 20A entirely. The belt 32A is also constructed as an insulating belt for the same purpose as the holder 31 made of an insulating material, i.e., to prevent electrostatic charges from being conducted away from the dust collection belt 32B, and to prevent the normal operation of the motor 37 from being affected by the conducted electrostatic charges. Advantageously, the belt 32A and the dust collection belt 32B are manufactured using an insulating belt, and leather helps to prevent the spreading and conduction of electrostatic charges.
It should be appreciated that in fig. 3, the drive assembly including the motor 37, the belt 32A and the dust collection belt 32B is shown as a subassembly, hereinafter referred to as a belt drive assembly, and that fig. 3 shows the belt drive assembly partially installed in the bracket 31. As shown in fig. 3, the dust collection belt 32B may be mounted to a side mounting plate 38 in the belt drive assembly by means of the rotation shafts 32B1, 32B2 and a mounting member 32B3, the drive belt 32A being connected to the dust collection belt 32B by means of a common rotation shaft 32B2 and to the motor 37 by means of another rotation shaft. After the belt drive assembly is installed into the bracket 31, the side mounting plate 38 covers the bracket 31 from the side to protect the inner components. In order to stably mount the belt transmission assembly, one end of the bracket 31 is formed with a U-shaped receiving portion 31A for integrally receiving one end of the belt transmission assembly therein. A U-shaped motor frame 37A is arranged inside the U-shaped receiving portion 31A for supporting the motor 37. The end of the side mounting plate 38 has a frame mounting portion 38A, the frame mounting portion 38A conforming in shape to the U-shaped receiving portion 31A for firmly mounting the belt assembly to the bracket 31.
According to the present application, the dust collecting member 34 of the dust collecting device 30 is made of an electrically conductive material or a hydrophilic material. The dust sweeping member 34 contacts and scrapes the dust collecting belt 32B to sweep a part of the toner 20A, however, the adsorption of the toner 20A by the dust collecting belt 32B makes it impossible to sweep the whole toner 20A completely and easily by simple scraping. The dust sweeping member 34 of a conductive material and a hydrophilic material can solve this problem. In the case of the dust sweeping member 34 made of a conductive material, the dust sweeping member 34 can conduct away the electrostatic charges in the area where it contacts on the dust collecting belt 32B and does not easily accumulate the electrostatic charges itself, thereby easily sweeping the toner 20A. In the case of the dust sweeping member 34 made of a hydrophilic material, the dust sweeping member 34 can conduct electrostatic charges away from the dust collection belt 32B on the one hand, and also prevent itself from accumulating electrostatic charges by means of high humidity on the other hand, due to the conductivity of water, thereby easily sweeping the toner 20A.
Advantageously, the dust sweeping member 34 is grounded via a grounding element to better conduct electrostatic charges away from the region of the dust collection belt 32B where the dust sweeping member 34 contacts. The grounding element can be a grounding sheet, a grounding rod, a grounding wire and other similar elements.
According to the embodiment of the application, the high-voltage dc power supply 36 is used to supply the electric charge to the power transmission member 33, the dc power supply 36 can provide a voltage of, for example, 10-15 kv, the positive electrode of the dc power supply 36 is connected to the power transmission member 33 to supply the electric charge, and the negative electrode is grounded, as shown in fig. 4. In addition to providing electrostatic charge to the dust collection belt 32B with the high voltage dc power supply 36, other conventional means or devices for providing sufficient electrostatic charge may be used. Advantageously, the dust collection belt 32B may be disposed at a position 3 to 10cm from the surface of the slip ring 10, which is within the range of the electrostatic field provided by the electrostatic charge on the dust collection belt 32B, and good adsorption effect may be ensured.
Further, in order to supply electric charges in a controllable manner, a potentiometer (not shown) may be provided between the direct current power supply 36 and the power transmitting member 33. By changing the output voltage and the output current of the direct current power supply 36 by adjusting the resistance value of the potentiometer, the voltage supplied to the power transmitting member 33 can be changed, with a consequent change in the amount of electrostatic charge supplied to the dust collection belt 32B. Whereby the adsorption force and adsorption range of the dust collection belt 32B can be changed.
In the embodiment of the present application, the respective constituent members of the dust collection device 30 may have different configurations. For example, the power feeding member 33 may be configured as a power feeding comb, a power feeding brush, or a power feeding terminal, the dust sweeping member 34 may be configured as a dust sweeping brush or a flexible dust sweeping sheet, and the dust collecting member 35 may be a dust collecting case, a dust collecting bag, or a dust collecting tray. Other suitable configurations may be employed in the dust collection device 30 of the present application while ensuring good power delivery, dust sweeping and dust collection.
The dust collecting device 30 according to the present application can be removably mounted to the housing of the slip ring 10, and the dust sweeping member 34 and the dust collecting member 35 are mounted to the bracket 31 in a manner that facilitates disassembly and assembly, facilitating maintenance and cleaning. After the dust collecting device 30 is installed in place, when the CT equipment works, the motor 37 is started to drive the transmission belt 32A and the dust collecting belt 32B to continuously rotate, the power transmission member 33 transmits positive charges from the direct current power supply 36 to the dust collecting belt 32B, electrostatic charges are accumulated on the surface of the dust collecting belt 32B to form an electrostatic field, and the dust collecting belt 32B adsorbs carbon powder 20A on the slip ring 10 and the carbon brush 20 and carbon powder 20A and other dust in the inner space of the CT equipment to the slip ring by utilizing the characteristic of electrostatic adsorption of light and small substances. As the dust collecting belt 32B runs over the dust collecting member 35 with the adsorbed toner 20A, the toner 20A is swept from the dust collecting belt 32B by the dust sweeping member 34 and collected in the dust collecting member 35. The reciprocating action achieves the purpose of removing dust.
According to another aspect of the present application, there is also provided a dust collection method of a medical imaging apparatus, which may include:
providing an annular insulating dust collection belt 32B, the dust collection belt 32B being disposed proximate to a contact surface 10A of the slip ring 10 that is in contact with the carbon brush 20;
supplying electric charge to the dust collection belt 32B through the power transmitting member 33 so that sufficient electrostatic charge is accumulated on the dust collection belt 32B, collecting the toner 20A from the slip ring 10 by electrostatic adsorption, wherein the power transmitting member 33 is connected to the direct current power source 36 and arranged in contact with the dust collection belt 32B, whereby electric charge (e.g., positive charge) from the direct current power source 36 is transferred to the dust collection belt 32B via the power transmitting member 33;
the dust collection belt 32B is driven to continuously rotate by the motor 37 such that the first surface of the dust collection belt 32B and the second surface opposite to the first surface alternately face the contact surface 10A of the slip ring 10 to continuously collect the toner 20A from the slip ring 10;
sweeping the collected toner 20A from the dust collection belt 32B by the dust sweeping member 34, wherein the dust sweeping member 34 is disposed on the opposite side of the dust collection belt 32B with respect to the slip ring 10 and is in contact with the dust collection belt 32B; and
the toner 20A swept out from the dust collection belt 32B is collected by a dust collection member 35 disposed below the dust collection member 34.
The dust collection method according to the present application may be a direct application of the dust collection device 30 shown in fig. 3 and 4, but is not limited to the configuration shown in fig. 3 and 4.
According to another aspect of the present application, there is also provided a medical imaging apparatus including the dust collection device 30 of the present application. The medical imaging device may be a CT device, an MRI device, a PET-CT device, a CT-MR or a PET-MR device.
In summary, in the present application, the dust collection device 30 properly utilizes the adsorption of the micro dust by static electricity, provides a convenient dust collection manner, and prevents possible adverse effects of static charges on the internal electronics of the CT apparatus while utilizing the advantageous aspects of static electricity adsorption by selecting suitable component materials and reasonably designed component arrangements. The dust collection device 30 of the present application provides a finer dust collection solution that is more friendly to the internal components of the CT apparatus than existing wind powered dust extraction solutions.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A dust collection device (30) of a medical imaging apparatus, the medical imaging apparatus comprising: a slip ring (10) capable of reciprocal continuous rotation and a carbon brush (20) in contact with the slip ring to transmit a data signal, the dust collection device being arranged downstream of the carbon brush with respect to a running direction of the slip ring, the dust collection device comprising:
an insulating bracket (31) mounted on the housing of the slip ring;
an annular insulating dust collecting belt (32B) mounted to the bracket such that a surface of the dust collecting belt is proximate to a contact surface of the slip ring with which the carbon brush is in contact to collect dust from the contact surface, the dust collecting belt being connected to a motor (37) fixed to the bracket by an annular insulating transmission belt (32A) to rotate continuously such that a first surface of the dust collecting belt and a second surface opposite to the first surface alternately face the contact surface of the slip ring;
a power transmitting member (33) connected to a direct current power supply (36) to obtain electric charges, arranged to contact the dust collection belt to supply the electric charges to the dust collection belt, so that electrostatic charges are accumulated on the dust collection belt to collect dust from the slip ring by electrostatic adsorption;
a dust sweeping member (34) disposed on the opposite side of the dust collection belt with respect to the slip ring and contacting the surface of the dust collection belt to sweep the collected dust from the dust collection belt; and
a dust collection member (35) mounted to the bracket and located below the dust sweeping member to collect dust swept from the dust collection belt;
wherein the dust collection device comprises at least one dust collection device arranged at intervals along the circumference of the slip ring, one of the at least one dust collection device being adjacent to the carbon brush.
2. The dust collection device (30) of a medical imaging apparatus according to claim 1, wherein the dust sweeping member is made of a conductive material or a hydrophilic material.
3. The dust collection device (30) of a medical imaging apparatus according to claim 1, wherein the dust sweeping member is grounded through a grounding element.
4. A dust collection device (30) of a medical imaging apparatus according to any one of claims 1 to 3, wherein the dc power supply supplies a voltage of 10 to 15kv, a positive electrode of the dc power supply is connected to the power transmitting member, and a negative electrode of the dc power supply is grounded.
5. A dust collection device (30) of a medical imaging apparatus according to any one of claims 1 to 3, wherein a potentiometer is provided between the direct current power supply and the power transmitting member.
6. A dust collecting device (30) of a medical imaging apparatus according to any one of claims 1 to 3, wherein the power feeding member is configured as a power feeding comb, a power feeding brush, or a power feeding terminal, the dust sweeping member is configured as a dust sweeping brush or a flexible dust sweeping sheet, and the dust collecting member is configured as a dust collecting case or a dust collecting tray.
7. A dust collection method of a medical imaging apparatus, characterized by collecting dust using the dust collection device of the medical imaging apparatus according to claim 1, the dust collection method comprising:
supplying power to the power transmitting member (33) by the direct current power supply (36), supplying electric charge to the dust collecting belt via the power transmitting member so that electrostatic charge is accumulated on the dust collecting belt;
driving the dust collection belt to continuously rotate by the motor (37) so as to continuously collect dust from the slip ring;
sweeping the collected dust from the dust collection belt by the dust sweeping member (34) during rotation of the dust collection belt; and
dust swept from the dust collection belt is collected in real time by the dust collection member (35).
8. Medical imaging device, characterized in that it comprises a dust collection device according to any one of claims 1 to 6, which is a CT device, an MRI device, a PET-CT device, a CT-MR or a PET-MR device.
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| CN202310863133.0A CN116571511B (en) | 2023-07-14 | 2023-07-14 | Dust collection device and method of medical imaging equipment and medical imaging equipment |
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| CN202310863133.0A CN116571511B (en) | 2023-07-14 | 2023-07-14 | Dust collection device and method of medical imaging equipment and medical imaging equipment |
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| CN117840094A (en) * | 2024-03-07 | 2024-04-09 | 赛诺威盛科技(北京)股份有限公司 | Carbon powder collecting device for medical imaging equipment and medical imaging equipment |
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| CN116571511A (en) | 2023-08-11 |
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