CN114894595A - Thermal desorption assembly and lung cancer detector - Google Patents
Thermal desorption assembly and lung cancer detector Download PDFInfo
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- CN114894595A CN114894595A CN202210583248.XA CN202210583248A CN114894595A CN 114894595 A CN114894595 A CN 114894595A CN 202210583248 A CN202210583248 A CN 202210583248A CN 114894595 A CN114894595 A CN 114894595A
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- 238000003795 desorption Methods 0.000 title claims abstract description 57
- 206010058467 Lung neoplasm malignant Diseases 0.000 title claims description 14
- 201000005202 lung cancer Diseases 0.000 title claims description 14
- 208000020816 lung neoplasm Diseases 0.000 title claims description 14
- 238000001179 sorption measurement Methods 0.000 claims abstract description 74
- 230000000670 limiting effect Effects 0.000 claims description 47
- 238000010438 heat treatment Methods 0.000 claims description 39
- 238000001514 detection method Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 206010028980 Neoplasm Diseases 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/082—Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4022—Concentrating samples by thermal techniques; Phase changes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/405—Concentrating samples by adsorption or absorption
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- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0019—Sample conditioning by preconcentration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
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Abstract
The invention discloses a thermal desorption assembly and thermal desorption equipment, wherein the thermal desorption assembly comprises an adsorption part, a connecting pipe assembly and a pulling part, a matching cavity extending along the length direction of the connecting pipe assembly is formed in the connecting pipe assembly, the adsorption part can penetrate through the matching cavity, the pulling part is partially penetrated through the matching cavity and is connected with the adsorption part, a connecting assembly is arranged between the pulling part and the connecting pipe assembly, the connecting assembly is provided with a locking position and a releasing position, the pulling part is locked and connected with the connecting pipe assembly in the locking position, the pulling part is separated from the connecting pipe assembly in the releasing position, and the pulling part can drive the adsorption part to be separated from the matching cavity. The thermal desorption assembly is convenient for quick replacement of the suction accessory, and improves the operation efficiency.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a thermal desorption assembly and a lung cancer detector.
Background
The thermal desorption component is a device for enriching gas in a medical diagnosis device for detecting lung cancer, the lung cancer detection device detects harmful substances in human exhaled air to judge whether cancer exists, but the concentration of the harmful substances in the human exhaled air is too low, a sensor in the device cannot detect the harmful substances, and therefore the human exhaled air needs to be enriched, namely concentrated. The specific method comprises the following steps: the person who needs the test blows 10L gas collection bag full earlier, then on being connected to the interface of equipment with the gas collection bag, the gas in the gas collection bag flows through the thermal desorption subassembly with velocity of flow V1 through the inside gas circuit of equipment, contains the adsorption tube in the thermal desorption subassembly, and the adsorption tube can be with the whole absorption of harmful substance in the gas. Then the thermal desorption component is heated, pure gas with the flow rate of V2 is introduced, the harmful substances adsorbed in the adsorption tube can be separated from the pure gas after heating, the concentration of the harmful substances is greatly improved because V2 is far less than V1, and whether the people have cancer can be obtained through sensor measurement.
But because the repeatedly usable number of times of adsorption tube is limited, consequently need regularly change the adsorption tube, the adsorption tube in the thermal desorption subassembly among the correlation technique is fixed through the centre gripping from top to bottom of coupling mechanism, when dismouting adsorption tube, needs take out the adsorption tube with the connection structure after taking apart, leads to the adsorption tube dismouting inconvenient, at every turn need change the adsorption tube, all needs long-time operation.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a thermal desorption assembly, which is convenient for quick replacement of the suction attachment and improves the operation efficiency.
The embodiment of the invention also provides a lung cancer detector.
The seed thermal desorption assembly of the embodiment of the invention comprises: the adsorption device comprises an adsorption part and a connecting pipe assembly, wherein a matching cavity extending along the length direction of the connecting pipe assembly is formed in the connecting pipe assembly, and the adsorption part can penetrate through the matching cavity from one end of the matching cavity; pull out and draw the piece, pull out and draw a part to wear to establish cooperation intracavity and with the adsorption component is connected, pull out draw the piece with be provided with coupling assembling between the connecting tube subassembly, coupling assembling has latched position and release position latched position, pull out draw the piece with connecting tube subassembly locking connection release position, pull out draw the piece with connecting tube subassembly separation, just pull out and draw the piece and can drive the adsorption component is deviate from cooperate the chamber.
In the thermal desorption assembly of the embodiment of the invention, one end of the pulling part extends into the connecting pipe assembly and is connected with the adsorption part, the connecting assembly is arranged between the pulling part and the connecting pipe assembly and is provided with a locking position and a releasing position, the pulling part is locked and connected with the connecting pipe assembly in the locking position, the pulling part is separated from the connecting pipe assembly in the releasing position, when the adsorption part needs to be replaced, the connecting assembly can be controlled to be in the releasing position, so that the pulling part connected with the adsorption part can be drawn out from one end of the connecting pipe assembly, after the adsorption part is replaced, the pulling part can be inserted into the connecting pipe assembly from the side surface again, the replacement and installation of the adsorption part are completed, and when the pulling part and the connecting pipe assembly are assembled in place, the connecting assembly can be controlled to be in the locking position to prevent the pulling part from falling off, therefore, when the thermal desorption assembly is used for replacing the adsorption part, need not to dismantle relevant connection structure, it is simple and convenient that the absorption piece is changed, and the operating efficiency is high, has avoided connection structure to dismantle assembly deviation and the structural damage problem that leads to repeatedly simultaneously.
In some embodiments, the connection assembly is a limiting protrusion and a limiting groove, the limiting protrusion is disposed on one of an inner wall of the matching cavity and an outer wall of the pulling piece, the limiting groove is disposed on the other of the inner wall and the outer wall of the matching cavity, the limiting protrusion is movable between a locking position and a releasing position along a radial direction of the matching cavity, the limiting protrusion is at least partially matched in the limiting groove in the locking position, and the limiting protrusion is separated from the limiting groove in the releasing position.
In some embodiments, the stopper projection is connected to an inner wall of the fitting cavity by an elastic member having a force that drives the stopper projection to move from the release position to the lock position.
In some embodiments, the inner wall of the mating cavity has a groove extending along a radial direction thereof, the elastic member is disposed in the groove, the limiting protrusion extends out of the groove in the locking position, and the limiting protrusion is disposed in the groove in the releasing position; and/or the limiting bulge is spherical.
In some embodiments, the limiting groove is an annular groove extending along the circumferential direction of the connecting tube assembly; and/or a stopping part is further arranged on the outer peripheral surface of the pulling part and is positioned on one side of the pulling part far away from the adsorption part, and when the limiting protrusion is positioned at the locking position, the stopping part is stopped against the end part of the connecting pipe assembly.
In some embodiments, the connecting pipe assembly has an air flow channel penetrating through an outer wall of the connecting pipe assembly, the adsorption member is communicated with the air flow channel, the air flow channel is externally connected with an air outlet pipe, and the other end of the adsorption member, which is far away from the pulling member, is communicated with an air inlet pipe.
In some embodiments, an adapter is connected to one end of the suction piece, and the pulling piece is in threaded connection with the adapter; the adapter is internally provided with a cavity, the cavity is communicated with the adsorption piece and the airflow channel.
In some embodiments, the connecting pipe assembly comprises a connector and a protective pipe which are connected with each other, the limiting protrusion is arranged on the inner wall of the connector, and the adsorbing piece is arranged in the protective pipe in a clearance penetrating manner; and/or, the thermal desorption subassembly still includes the fixed subassembly of heating, the absorption piece wears to establish in the fixed subassembly of heating.
In some embodiments, the thermal desorption assembly further comprises a heating fixing assembly and at least two detection elements, the adsorption member is arranged in the heating fixing assembly in a penetrating manner, and the at least two detection elements are arranged on the heating fixing assembly and used for measuring the heating temperature.
The lung cancer detector provided by the embodiment of the invention comprises a shell and a thermal desorption assembly, wherein the thermal desorption assembly is arranged in the shell, and the thermal desorption assembly is the thermal desorption assembly provided by the embodiment.
According to the lung cancer detector provided by the embodiment of the invention, the adsorption piece is convenient to replace and the equipment operation efficiency is high by adopting the thermal desorption assembly.
Drawings
Fig. 1 is an exploded view of a thermal desorption assembly according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a thermal desorption assembly according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a thermal desorption assembly according to an embodiment of the present invention.
Fig. 4 is a partial structural sectional view of a thermal desorption assembly according to an embodiment of the present invention.
Fig. 5 is an assembly schematic diagram of the pulling member and the adsorbing member of the thermal desorption assembly according to the embodiment of the invention.
Reference numerals:
connecting pipe subassembly 1, spacing arch 11, airflow channel 12, connector 13, pull out 2, head 21, connecting portion 22, spacing groove 221, spacing bulge loop 23, heating fixed subassembly 3, heating fixed block 31, drain pan 311, apron 312, fixed plate 313, heating rod 32, stationary blade 33, protective tube 34, intake pipe 4, adapter tube 41, adsorption part 5, adapter 51, outlet duct 6, temperature sensor 7, thermocouple 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 5, the thermal desorption assembly according to the embodiment of the present invention includes an adsorption member 5, a connecting tube assembly 1, and a pulling member 2. It should be noted that, in the medical field, the lung cancer detector can detect lung cancer by using gas, the adsorption member can adsorb harmful substances in the gas, and is an important structural member of the lung cancer detector, and the adsorption member has limited reusable times and needs to be replaced regularly.
In this embodiment, the adsorbing member 5 is an adsorbing tube, and in other embodiments, the adsorbing member 5 may be any other structure capable of adsorbing or filtering.
As shown in fig. 3-5, the connection pipe assembly 1 has a matching cavity extending along the length direction thereof, the adsorption member 5 can penetrate through the matching cavity from one end of the matching cavity, and the pulling member 2 partially penetrates through the matching cavity and is connected with the adsorption member 5.
Specifically, as shown in fig. 1 to 3, when the thermal desorption assembly of the present application is used in a detector for lung cancer, for example, the connection pipe assembly 1 is connected to the heating fixing assembly 3, one end of the pulling member 2 can be connected to the adsorption member 5, during the assembly process, the pulling member 2 can push the adsorption member 5 to be inserted along the matching cavity until the adsorption member 5 reaches a preset position, at this time, the outer circumferential surface of the pulling member 2 is in sealing contact with the inner circumferential surface of the matching cavity, and the adsorption member 5 is assembled in place.
Further, as shown in fig. 4 and 5, a connection assembly is arranged between the pulling member 2 and the connection pipe assembly 1, the connection assembly has a locking position and a releasing position, the pulling member is locked and connected with the connection pipe assembly at the locking position, the pulling member is separated from the connection pipe assembly at the releasing position, and the pulling member can drive the adsorption member to be separated from the matching cavity.
It can be understood that, the coupling assembling of this application can prevent to pull out 2 and deviate from in connecting pipe assembly 1 under the non-artificial control state, and then improves the reliability of adsorbing 5 assembly, makes things convenient for the change of adsorbing 5 simultaneously.
Specifically, when the suction member 5 is in a normal use state, the connection assembly can be controlled to be in a locking position, so that the pulling member 2 and the connection pipe assembly 1 are locked and connected, and the suction member 5 is prevented from being removed (refer to fig. 4).
When adsorbing piece 5 need be changed, can control coupling assembling and be in the release position to make and pull out 2 and the separation of connecting pipe subassembly 1, remove and pull out 2 and can take adsorbing piece 5 out from the one end of connecting pipe subassembly 1, treat to change new adsorbing piece 5 back, will be connected with pulling piece 2 of adsorbing piece 5 and reassemble.
In other words, through the interconversion of control coupling assembling between latched position and release position, can control the locking and the release of pulling piece 2 and connecting pipe subassembly 1, when needing to be changed and adsorbing piece 5, only need control coupling assembling to be in the release position, need not to dismantle relevant connection structure, adsorb 5 and change simple and conveniently, the operating efficiency is high, has avoided connection structure to dismantle assembly deviation and the structural damage problem that leads to repeatedly simultaneously.
In the thermal desorption assembly of the embodiment of the invention, one end of the pulling part extends into the connecting pipe assembly and is connected with the adsorption part, the connecting assembly is arranged between the pulling part and the connecting pipe assembly and is provided with the locking position and the releasing position, the pulling part is locked and connected with the connecting pipe assembly in the locking position, the pulling part is separated from the connecting pipe assembly in the releasing position, when the adsorption part needs to be replaced, the connecting assembly can be controlled to be in the releasing position, so that the pulling part connected with the adsorption part can be directly pulled out from one end of the connecting pipe assembly, after the adsorption part is replaced, the pulling part can be inserted into the connecting pipe assembly again to complete the replacement and installation of the adsorption part, and when the pulling part and the connecting pipe assembly are assembled in place, the connecting assembly can be controlled to be in the locking position to prevent the pulling part from falling off, therefore, when the thermal desorption assembly aims at the operation of replacing the adsorption part, need not to dismantle relevant connection structure, it is simple and convenient that the absorption piece is changed, and the operating efficiency is high, has avoided connection structure to dismantle assembly deviation and the structural damage problem that leads to repeatedly simultaneously.
Optionally, the connecting assembly includes a limiting protrusion 11 and a limiting groove 221, one of the inner wall of the fitting cavity and the outer wall of the pull-out member 2 is provided with the limiting protrusion 11, the other is provided with the limiting groove 221, the limiting protrusion 11 is movable along the radial direction of the fitting cavity between a locking position and a releasing position, in the locking position, the limiting protrusion 11 is at least partially fitted in the limiting groove 221, and in the releasing position, the limiting protrusion 11 is separated from the limiting groove 221. Preferably, as shown in fig. 5, the limit groove 221 is an annular groove extending along the circumferential direction of the connection pipe assembly 1.
Further, the limiting protrusion 11 is connected to the inner wall of the fitting cavity by an elastic member, and the limiting protrusion 11 is spherical, and the elastic member has a force for driving the limiting protrusion 11 to move from the releasing position to the locking position. From this, when drawing piece 2 from connecting pipe subassembly 1 in will drawing the needs and taking out, only need apply the pulling force to drawing piece 2, can extrude spacing groove 221 with spacing arch 11, realize spacing arch 11 and spacing groove 221's separation, further simplify the change process of adsorbing piece 5, the practicality is high, and the dismouting is efficient. Preferably, the limiting protrusion 11 is spherical, and the elastic member is a spring. In other embodiments, the limiting protrusion 11 may have other shapes, and the elastic member may have other structures such as an elastic column.
Furthermore, the inner wall of the matching cavity is provided with a groove extending along the radial direction of the inner wall, the elastic piece is arranged in the groove, the limiting protrusion 11 extends out of the groove at the locking position, and the limiting protrusion 11 is positioned in the groove at the releasing position. It will be appreciated that the recess may provide a fitting space for the resilient member while providing a movement space for the position-restricting protrusion 11.
Alternatively, the connection assembly is not limited to the limiting protrusion 11 and the limiting groove 221, for example, the connection assembly may also be a pressing block, the pressing block is disposed on the outer wall of the connection pipe assembly 1 and is movable between a locking position and a releasing position along the radial direction thereof, the pulling member 1 may be provided with a limiting block, when the absorbing member 5 is assembled in place, the pressing block may be pressed down to the locking position, the pressing block may stop against the limiting block at this time, the absorbing member 5 is prevented from being released, when the absorbing member 5 needs to be replaced, the pressing block may stop the releasing position, the pressing block is not stopping the limiting block, and the pulling member 2 may separate the absorbing member from the connection pipe assembly 1.
Alternatively, the connecting assembly may be a bolt fastener, the bolt fastener may be inserted through an outer wall of the connecting pipe assembly 1, when the suction member 5 is assembled in place, the bolt fastener may be screwed inward to a locking position to compress the pulling member 2, and when the suction member 5 needs to be replaced, the bolt fastener may be screwed outward to a releasing position, the bolt fastener is no longer in contact with an outer circumferential surface of the pulling member 2, and the pulling member 2 may be disengaged from the connecting pipe assembly 1.
In some embodiments, as shown in fig. 1, 3 and 5, the pulling element 2 includes a head portion 21 and a connecting portion 22, one end of the connecting portion 22 is fitted in the fitting cavity and connected to the suction element 5, the limiting groove 221 is located on the outer circumferential surface of the connecting portion 22, the head portion 21 is connected to the other end of the connecting portion 22, and the head portion 21 includes a handle portion.
Further, as shown in fig. 4 and 5, a stopping portion 23 is further disposed on the outer peripheral surface of the connecting portion 22, and the stopping portion 23 is located on a side of the pulling member 2 away from the adsorbing member 5, when the limiting protrusion 11 is located at the locking position, the stopping portion 23 is stopped against the end portion of the connecting tube assembly 1. Specifically, when the pulling element 2 is assembled in place, the limiting protrusion 11 is fitted in the limiting groove 221, and the stopping portion 23 stops against the outer end of the connecting portion 22, so that the assembling and positioning functions can be achieved.
Further, as shown in fig. 3, the connecting tube assembly 1 has an air flow channel 12 radially penetrating through the outer wall of the connecting tube assembly 1, the adsorbing member 5 is communicated with the air flow channel 12, the air flow channel 12 is externally connected with an air outlet pipe 6, and the other end of the adsorbing member 5 far away from the pulling member 2 is communicated with the air inlet pipe 4.
It should be noted that, the harmful substance adsorbed by the adsorbing member 5 is finally mixed into the externally introduced pure air flow, the air flow containing the harmful substance is discharged to the detecting device through the air outlet pipe 6, and the air flow passage 12 communicating the adsorbing member 5 and the air outlet pipe 6 is provided on the connecting pipe assembly 1, which is beneficial to the assembly of the air outlet pipe 6. Meanwhile, in the embodiment, the airflow channel 12 is radially arranged on the connecting pipe assembly 1, namely, the air outlet pipe 6 is vertically connected to the side surface of the connecting pipe assembly 1, so that the installation of the air outlet pipe 6 is not influenced by the installation of the pulling part 2, the air inlet pipe 4 and the air outlet pipe 6 are hoses, the bending of the pipes is not influenced, and the installation difficulty is further reduced.
Further, the one end of adsorbing piece 5 is connected with adapter 51, pulls out pull-out piece 2 and adapter 51 threaded connection, and adapter 51 is inside to be provided with the cavity, and the cavity just communicates with airflow channel 12 with adsorbing piece 5 intercommunication.
From this, set up adapter 51 at 5 tip of absorption piece and be convenient for realize absorbing 5 being connected with other structures, and adapter 51 and pull out 2 threaded connection of piece, connect reliably, it is convenient to dismantle, is convenient for change absorbing 5.
Further, as shown in fig. 1 to 5, the connecting tube assembly 1 includes a connecting head 13 and a protection tube 34 connected to each other, the limiting protrusion 11 is disposed on an inner wall of the connecting head 13, and the adsorbing member 5 is disposed in the protection tube 34 with a gap therebetween. Therefore, the protective tube 34 can protect the adsorption member 5 from being extruded by external force, ensure that the structural form of the adsorption member 5 is not deformed by force, and improve the reliability of the thermal desorption assembly. Meanwhile, the adsorption piece 5 is arranged in the protective tube 34 in a clearance penetrating mode, so that the adsorption piece 5 can be conveniently disassembled and assembled.
Further, as shown in fig. 1-3, the thermal desorption assembly further includes a heating fixing assembly 3, and the adsorption member 5 is inserted into the heating fixing assembly 3.
Specifically, as shown in fig. 1-3, the gas exhaled by the human body may flow into the adsorbing member 5 along the gas inlet pipe 4, and the heating fixing component 3 may heat the adsorbing member 5, so that the harmful substances in the exhaled gas are adsorbed on the adsorbing member 5, and the remaining gas is exhausted from the gas outlet pipe 6, thereby realizing the extraction of the harmful substances.
Further, as shown in fig. 1 to 3, the heating fixing assembly 3 includes a heating fixing block 31 and a heating rod 32, and both the heating rod 32 and the protection tube 34 penetrate the heating fixing block 31 along the length direction of the adsorbing member 5. In this embodiment, the number of the adsorption members 5 is two, the two adsorption members are arranged side by side, the number of the heating rods 32 is also two, the two heating rods 32 are arranged below the adsorption members 5 side by side, and the two heating rods 32 correspond to the two adsorption members 5 respectively. In other embodiments, the number of the adsorption member 5 and the heating rod 32 may be increased or decreased adaptively, and other structures such as a heating coil may be used instead of the heating rod 32.
Specifically, as shown in fig. 1 to 3, the heating fixing block 31 includes a cover plate 312 and a bottom shell 311, the heating rod 32 is located in the bottom shell 311 and is fixedly connected to the bottom shell 311 through fixing pieces 33 at two ends, the cover plate 312 and the bottom shell 311 can clamp the protection tube 34, the protection tube 34 can protect the adsorption member 5 from being extruded by an external force, the structural form of the adsorption member 5 is ensured not to be deformed by a force, and the reliability of the thermal desorption assembly is improved.
Further, as shown in fig. 1 to 4, the end of the connector 13 facing the heating fixing block 31 may be sleeved on the protection tube 34 and be in interference fit with the protection tube 34, and the air inlet tube 4 is connected with the protection tube 34 through the adapter tube 41, specifically, as shown in fig. 3, the end of the protection tube 34 facing the air inlet tube 4 is connected with the adapter tube 41, and the end of the adsorbing member 5 facing the air inlet tube 4 extends into the adapter tube 41, so that the air inlet tube 4, the adapter tube 41, the adsorbing member 5, the adapter 51 and the air outlet tube 6 may form a complete air inlet and outlet flow channel, and a sealing ring is disposed at the connection between the adapter tube 41 and the protection tube 34 to prevent gas leakage.
Further, as shown in fig. 1, a fixing plate 313 is further provided on the heating fixing block 31, and the fixing plate 313 is connected to the connecting pipe assembly 1, so that stability and reliability of assembling the connecting pipe assembly 1 can be improved.
In some embodiments, as shown in fig. 1 and 2, the thermal desorption assembly further comprises at least two detection elements, which are both disposed on the heating fixing assembly 3 for measuring the heating temperature. Preferably, two detection elements are included, respectively a temperature sensor 7 and a thermocouple 8. It can be understood that the temperature information of the thermal desorption assembly can be detected in real time through the temperature sensor 7, and the temperature can be timely fed back to the control system on the premise of double monitoring through the thermocouple 8, so that the detection result can be conveniently and timely regulated and controlled, the arrangement of a plurality of detection elements can ensure the accuracy of the detection result, and the condition that the whole device cannot operate due to the damage of a single detection element can be avoided.
The lung cancer detector provided by the embodiment of the invention comprises a shell and a thermal desorption assembly, wherein the thermal desorption assembly is arranged in the shell, and the thermal desorption assembly is the thermal desorption assembly provided by the embodiment.
According to the thermal desorption device provided by the embodiment of the invention, the adsorption piece 5 is convenient to replace and the operation efficiency of the device is high by adopting the thermal desorption component.
Furthermore, a cooling fan is arranged in the shell to cool the adsorption chamber (space in the shell) when the temperature is too high, so that the operating environment is ensured to be proper.
Further, a thermal fuse is further arranged in the shell, so that hardware heating is directly cut off when the software is turned off and heating fails, and the purpose of double guarantee is achieved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A thermal desorption assembly, comprising:
the adsorption device comprises an adsorption part and a connecting pipe assembly, wherein a matching cavity extending along the length direction of the connecting pipe assembly is formed in the connecting pipe assembly, and the adsorption part can penetrate through the matching cavity from one end of the matching cavity;
pull out and draw the piece, pull out and draw a part to wear to establish cooperation intracavity and with the adsorption component is connected, pull out draw the piece with be provided with coupling assembling between the connecting tube subassembly, coupling assembling has latched position and release position latched position, pull out draw the piece with connecting tube subassembly locking connection release position, pull out draw the piece with connecting tube subassembly separation, just pull out and draw the piece and can drive the adsorption component is deviate from cooperate the chamber.
2. The thermal desorption assembly of claim 1, wherein the connection assembly is a limit protrusion and a limit groove, the limit protrusion is disposed on one of the inner wall of the fitting cavity and the outer wall of the pulling member, the limit groove is disposed on the other of the inner wall of the fitting cavity and the outer wall of the pulling member, the limit protrusion is movable along the radial direction of the fitting cavity between the locking position in which the limit protrusion is at least partially fitted in the limit groove and the release position in which the limit protrusion is separated from the limit groove.
3. The thermal desorption assembly of claim 1 wherein the stop protrusion is connected to an inner wall of the engagement cavity by a resilient member having a force urging the stop protrusion from the release position to the locking position.
4. The thermal desorption assembly of claim 3, wherein the inner wall of the mating cavity has a groove extending radially therein, the resilient member is disposed in the groove, the stop protrusion extends out of the groove in the locked position, and the stop protrusion is disposed in the groove in the released position;
and/or the limiting bulge is spherical.
5. The thermal desorption assembly of claim 1 wherein the limit groove is an annular groove extending along a circumferential direction of the connector assembly;
and/or a stopping part is further arranged on the outer peripheral surface of the pulling part and is positioned on one side of the pulling part far away from the adsorption part, and when the limiting protrusion is positioned at the locking position, the stopping part is stopped against the end part of the connecting pipe assembly.
6. The thermal desorption assembly of claim 1, wherein the connecting tube assembly has an air flow passage penetrating through an outer wall of the connecting tube assembly, the adsorption member is communicated with the air flow passage, the air flow passage is externally connected with an air outlet pipe, and the other end of the adsorption member, which is far away from the pulling member, is communicated with the air inlet pipe.
7. The thermal desorption assembly of claim 6 wherein the adsorption member is connected at one end thereof with an adapter, and the pull member is in threaded connection with the adapter;
the adapter is internally provided with a cavity, the cavity is communicated with the adsorption piece and the airflow channel.
8. The thermal desorption assembly of claim 2, wherein the connecting pipe assembly comprises a connecting head and a protection pipe which are connected with each other, the limiting protrusion is arranged on the inner wall of the connecting head, and the adsorption piece is arranged in the protection pipe in a clearance penetrating manner;
and/or, the thermal desorption subassembly still includes the fixed subassembly of heating, the absorption piece wears to establish in the fixed subassembly of heating.
9. The thermal desorption assembly of claim 8, further comprising a heating fixing assembly and at least two detection elements, wherein the adsorption element is arranged in the heating fixing assembly in a penetrating manner, and the at least two detection elements are arranged on the heating fixing assembly for measuring the heating temperature.
10. A lung cancer detector, characterized in that, includes casing and thermal desorption subassembly, the thermal desorption subassembly is located in the casing, the thermal desorption subassembly be according to any one of claims 8-10 the thermal desorption subassembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210583248.XA CN114894595A (en) | 2022-05-26 | 2022-05-26 | Thermal desorption assembly and lung cancer detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210583248.XA CN114894595A (en) | 2022-05-26 | 2022-05-26 | Thermal desorption assembly and lung cancer detector |
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| CN114894595A true CN114894595A (en) | 2022-08-12 |
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| CN202210583248.XA Pending CN114894595A (en) | 2022-05-26 | 2022-05-26 | Thermal desorption assembly and lung cancer detector |
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