CN208476315U - The lung function instrument tester of gaseous state in a kind of simulation Human Lung - Google Patents
The lung function instrument tester of gaseous state in a kind of simulation Human Lung Download PDFInfo
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- CN208476315U CN208476315U CN201821348534.3U CN201821348534U CN208476315U CN 208476315 U CN208476315 U CN 208476315U CN 201821348534 U CN201821348534 U CN 201821348534U CN 208476315 U CN208476315 U CN 208476315U
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Abstract
The utility model is a kind of lung function instrument tester for simulating gaseous state in Human Lung, including cavity, piston within the cavity, temperature-adjusting device, humidity control apparatus, temperature sensor, humidity sensor, pressure sensor, screw mechanism, driving motor, controller, screw mechanism is driven to move reciprocatingly by motor, and then simulate the respiratory function of Human Lung, simultaneously by temperature sensor, humidity sensor, the intracorporal epidemic disaster of pressure sensor test chamber and gas pressure, and it is able to carry out humidity compensation and temperature difference reparation.The device can more be bonded the actual measurement of the lung capacity of human body respiration operation, keep testing result relatively reliable.
Description
Technical field
The utility model is to be related to technical field of medical equipment, gaseous state in specifically a kind of simulation Human Lung
Lung function instrument tester.
Background technique
Lung function instrument is the instrument of hospital diagnosis patient breathing system disease, mainly by portions such as spirometer and gas analysers
Part composition can measure most of indexs of physiology of respiration, such as lung capacity, maximum minute ventilation and forced vital capacity ginseng
Number diagnoses diseased region for lung and airway lesions that early detection goes out, and assessment the severity of disease has important clinic
Meaning.With the development of health care science and technology, the technical performance and detection project of lung function instrument are also being continuously improved and are increasing
Add, lung function instrument has been widely used for the fields such as health care diagnosis and Human Physiology scientific research.Existing lung function instrument
Test macro does not all carry out gas in Human Lung and simulates, and fails the amendment for reflecting inside of human body gas temperature and humidity, so shadow
Ring the precision of precise measurement.And the present apparatus have temperature-humidity sensor, and can by heating, cooling and humidifier into
Gas temperature humid control in promoting the circulation of qi cylinder reaches body temperature, atmospheric pressure, steam-laden state (body
Temperature, pressure, water voper-saturated, BTPS), and then improve measurement accuracy.
Application No. is 201120256463.6 Chinese utility model patents to disclose one kind for spirometer school
The device of pushing out gas when certainly marking, the device push piston reciprocating operation to realize to sensor and push away gas, push and pull using push-pull rod
Bar is limited by position-arresting disk, to limit the activity space of push-pull rod, so that the volume to pushing out gas controls.But the dress
It sets using pushing manually, thrust size is uncontrollable, and the degree of automation is low, and volume adjustable range is limited, and as piston does not stop
Reciprocal operation also results in gas temperature in cavity and increases, and is unable to satisfy BTPS parameter controllably to realize fitting human body respiration fortune
The actual measurement of capable lung capacity causes result reliability not high.
Summary of the invention
The utility model aiming at the shortcomings in the prior art, provides a kind of lung function instrument for simulating gaseous state in Human Lung
Tester.
To achieve the above object, the utility model uses following technical scheme:
The lung function instrument tester of gaseous state in a kind of simulation Human Lung, it is characterised in that: including cavity, cavity is close
Cavity is sealed, slidable piston is internally provided with, lead screw is connect with piston drive, and lead screw passes through cavity bottom, cavity bottom peace
Equipped with lead-screw drive mechanism, the lead-screw drive mechanism and driving motor are sequentially connected, and the driving motor drives lead screw
Transmission mechanism rotates and then drives lead screw and piston to realize axially reciprocating, and the cavity is far from lead-screw drive mechanism side
Cavity wall on tracheae is installed, the tracheae is connected to inside cavity space, the tracheae and lung function instrument to be measured into
The connection of gas end；
Be provided with temperature sensing, humidity sensor and pressure sensor in the cavity, the temperature sensing with
The connection of temperature sensor controller signals, the humidity sensor are arranged in intratracheal, described humidity sensor and humidity
The connection of sensor controller signal, the humidity sensor controller are connect with humidification apparatus signal, the humidity sensor
Device controller by control humidification apparatus the intracorporal gas humidity of working condition control chamber, the pressure sensor and
Detect terminal signaling connection, the pressure sensor can the intracorporal barometric information of real-time detection chamber and be sent to detection eventually
End；
The lateral surface of the cavity is provided with temperature control pipeline, and the temperature control pipeline is by heating tube and cooling tube side-by-side
Around the spirality pipeline formed, the heating tube and cooling tube are independent pipeline, and the heating tube and cooling tube are equal
By heating tube and cooling tube controller, it is provided with heating tube solenoid valve in heating tube, cooling tube electromagnetism is provided in cooling tube
Valve, the cooling tube solenoid valve and heating tube solenoid valve are connect with temperature sensor controller signals, and the temperature passes
Sensor controller controls the working condition of cooling tube solenoid valve and heating tube solenoid valve, the heating tube and cooling tube controller
It is connected with cold liquid source and hydrothermal sources, is provided with two groups of water pumps in the heating tube and cooling tube controller, described two groups
The cold night in cold liquid source is pumped into cooling tube by water pump respectively, and the hydrothermal solution of hydrothermal sources is pumped into heating tube.
The temperature sensor includes the first temperature sensor and second temperature sensor, first temperature sensing
Device and second temperature sensor are separately positioned in the space of cavity inner piston two sides, first temperature sensor and the second temperature
Degree sensor is separately positioned on the bottom wall at cavity both ends, and the first temperature sensor and second temperature sensor are and temperature sensing
The connection of device controller signals.
The humidification apparatus is humidification machine, and the escape pipe of the humidification machine is connected to the junction of tracheae and cavity.
It is provided with heat source water pump and cold source water pump in the heating tube and cooling tube controller, the heat source water pump
Water inlet end is connect with hydrothermal sources, and the water outlet of heat source water pump is connect with the first overflow valve, and the first overflow valve setting is adding
In heat pipe circuit, hydrothermal sources are flowed by heating tube by the hydrothermal solution of the first overflow valve overflow, the overflow pipe of the first overflow valve with
The connectivity part of heating tube is arranged between hydrothermal sources and heating tube solenoid valve, and the water inlet end of the cold source water pump and cold liquid source connect
It connects, the water outlet of cold source water pump is connect with the second overflow valve, and the described second overflow valve setting is in cooling tube loop, by the
The hydrothermal solution of one overflow valve overflow flows into cold liquid source by cooling tube, and the overflow pipe of the second overflow valve and the connectivity part of cooling tube are arranged
Between cold liquid source and cooling tube solenoid valve.
The temperature-controlled tube routes the two spiral pipeline being parallel to each other compositions, two spiral pipeline difference being parallel to each other
For heating tube and cooling tube, radiating ribs are provided between adjoining spiral pipeline, adjacent radiating ribs form spiral groove, described
Heating tube and cooling tube be fixedly mounted in spiral groove.
The lead-screw drive mechanism includes positioning pipe, and the tail portion of positioning pipe is fixed on the central location of well floor, institute
The end for the positioning pipe stated extends outward to form ring baffle, and turnbarrel, the rotary sleeve are cased with outside the end of positioning pipe
The connecting pin of cylinder and positioning pipe extends inwardly to form annular snap-gauge, and the ring baffle stops annular snap-gauge to slide in and out, institute
The annular snap-gauge stated is clipped between two groups of roller bearings, is provided with spacing collar on the outside of positioning pipe, the spacing collar passes through
Stop screw is fixed on positioning pipe side wall, two groups of roller bearings be clipped in spacing collar side wall and ring baffle it
Between, the turnbarrel inner wall is fixedly installed with inner sleeve, the internal diameter of the inner sleeve inner sleeve identical, described as positioning bore
Cylinder inwall processing has screw thread, and lead screw is connect with inner sleeve by screw-driven, and the lead screw sequentially passes through inner sleeve and positioning
Pipe is fixedly connected with the piston, and the inner sleeve is fixedly connected with turnbarrel by positioning ring, and the positioning ring passes through spiral shell
Nail is fixedly mounted on the end face of inner sleeve and turnbarrel, and the turnbarrel lateral surface engages connection, institute with transmission gear
The transmission gear stated is fixedly connected with motor output shaft, and the motor output shaft and driving motor are sequentially connected.
The driving motor is stepper motor, and the stepper motor is connect with code device signal, the encoder
The velocity of rotation and rotation direction of stepper motor can be controlled.
The cavity is made of aluminium or polytetrafluoroethylene material, and the cavity bottom is fixed on mounting rack,
The mounting rack bottom is equipped with idler wheel, and the mounting rack uses engraved structure.
The beneficial effects of the utility model are: the present apparatus is back and forth run in the cavity by screw drive mechanism piston, lead to
Crossing encoder can be automatically controled the stroke of piston, realize the automatic control of the displaced volume of gas, and cavity both ends are equipped with temperature
Sensor, while temperature sensor, pressure sensor are arranged at air pipe outlet, ensure that the standard of parameter regulation and test
True property, containment portion are equipped with multiple radiating ribs, and radiating ribs increase the contact area between cavity and temperature-adjusting device, improve
Heating efficiency ensure that the uniformity that temperature is adjusted, while can keep away cooling tube and contact with each other with heating tube, more be bonded human body
The actual measurement of the lung capacity of operation is breathed, it is as a result relatively reliable.
Detailed description of the invention
Fig. 1 is the structure principle chart of the lung function instrument tester of gaseous state in a kind of simulation Human Lung of the utility model.
Fig. 2 is the lung function instrument tester lead-screw drive mechanism of gaseous state in a kind of simulation Human Lung of the utility model
Structure principle chart.
Fig. 3 is the lung function instrument tester heating tube and cooling tube of gaseous state in a kind of simulation Human Lung of the utility model
The structure principle chart of controller.
Appended drawing reference: 1, the first temperature sensor；2, heating tube；3, cooling tube；4, second temperature sensor；5, humidity passes
Sensor；6, pressure sensor；7, heating tube and cooling tube controller；8, cooling tube solenoid valve；9, heating tube solenoid valve；10, warm
Spend sensor controller；11, encoder；12, screw rod；13, spacing collar；14, positioning pipe；15, stop screw；16, Roller Shaft
It holds；17, turnbarrel；18, transmission gear；19, inner sleeve；20, positioning ring；21 transmission shafts；22, cavity；23, tracheae；24, silk
Thick stick transmission mechanism；25, driving motor；26, the first overflow valve；27, heat source water pump；28, hydrothermal sources；29, the second overflow valve；30,
Cold source water pump；31, cold liquid source.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.
As shown in Figure 1, a kind of lung function instrument tester for simulating gaseous state in Human Lung, it is characterised in that: including chamber
Body 22, cavity 22 are seal cavity, are internally provided with slidable piston, lead screw 12 is connect with piston drive, and lead screw 12 passes through
22 bottom of cavity, 22 bottom of cavity are equipped with lead-screw drive mechanism 24, and the lead-screw drive mechanism 24 and driving motor 25 pass
Dynamic connection, the driving motor 25 drive lead-screw drive mechanism 24 to rotate and then lead screw 12 and piston are driven to realize axial reciprocating
It moves, tracheae 23, the tracheae 23 and chamber is installed in the cavity wall of the cavity 22 far from 24 side of lead-screw drive mechanism
The connection of 22 inner space of body, the tracheae 23 are connect with the inlet end of lung function instrument to be measured；
Temperature sensing, humidity sensor 5 and pressure sensor 6, the temperature sensing and temperature are provided in cavity 22
Spend the connection of 10 signal of sensor controller, the humidity sensor 5 is arranged in tracheae 23, the humidity sensor 5 with
The connection of humidity sensor controller signal, the humidity sensor controller are connect with humidification apparatus signal, the humidity
Gas humidity in working condition control cavity 22 of the sensor controller by controlling humidification apparatus, the pressure pass
Sensor 6 is connect with detection terminal signaling, and the pressure sensor 6 being capable of barometric information in real-time detection cavity 22 and transmission
To detection terminal；
The lateral surface of cavity 22 is provided with temperature control pipeline, and the temperature control pipeline is by heating tube 2 and cooling tube 3 ring side by side
Around the spirality pipeline of formation, the heating tube 2 and cooling tube 3 are independent pipeline, the heating tube 2 and cooling tube 3
Pass through heating tube and cooling tube controller 7, is provided with heating tube solenoid valve 9 in heating tube 2, is provided with cooling in cooling tube 3
Pipe solenoid valve 8, the cooling tube solenoid valve 8 and heating tube solenoid valve 9 are connect with 10 signal of temperature sensor controller, institute
The temperature sensor controller 10 stated controls the working condition of cooling tube solenoid valve 8 and heating tube solenoid valve 9, the heating tube
And cooling tube controller 7 is connected with cold liquid source 31 and hydrothermal sources 28, is provided in the heating tube and cooling tube controller 7
The cold night in cold liquid source 31 is pumped into cooling tube 3 respectively, the hydrothermal solution of hydrothermal sources 28 is pumped by two groups of water pumps, two groups of water pumps
In heating tube 2.
Piston pushes the gas in cavity 22 to be discharged from tracheae 23, and with the basic exercise mode of simulated lung, temperature adjusts dress
It installs outside cavity 22, cavity to be heated or cooled；The both ends of the cavity 22 are respectively equipped with the first temperature sensor 1
Temperature-adjusting device is controlled to chamber by temperature sensor controller 10 with test chamber body temperature with second temperature sensor 4
Body is heated or cooled to human body temperature.Humidity sensor 5 is arranged at air pipe outlet, wet at 23 gas outlet of tracheae to detect
Degree controls humidity control apparatus by controller and carries out humidity regulation to 23 gas outlet of tracheae, reaches human body air blowing humidity；It is described
Pressure sensor 6 is arranged at 23 gas outlet of tracheae, to detect the gas pressure of tracheae discharge.In the present embodiment, temperature sensing
Device includes the first temperature sensor 1 and second temperature sensor 4, first temperature sensor 1 and second temperature sensor 4
It is separately positioned in 22 inner piston two sides space of cavity, first temperature sensor 1 and second temperature sensor 4 are set respectively
Set on the bottom wall at 22 both ends of cavity, the first temperature sensor 1 and second temperature sensor 4 with temperature sensor controller 10
Signal connection.
Two groups of temperature sensors can accurately measure out the temperature change in cavity 22, improve precision.
In the present embodiment, humidification apparatus is humidification machine, and the escape pipe of the humidification machine is connected to tracheae 23 and cavity 22
Junction.
As shown in figure 3, it is provided with heat source water pump 27 and cold source water pump 30 in heating tube and cooling tube controller 7, it is described
The water inlet end of heat source water pump 27 is connect with hydrothermal sources 28, and the water outlet of heat source water pump 27 is connect with the first overflow valve 26, described
First overflow valve 26 is arranged in 2 circuit of heating tube, flows into hydrothermal solution by heating tube 2 by the hydrothermal solution of 26 overflow of the first overflow valve
Source 28, the overflow pipe of the first overflow valve 26 and the connectivity part of heating tube 2 are arranged between hydrothermal sources 28 and heating tube solenoid valve 9,
The water inlet end of the cold source water pump 30 is connect with cold liquid source 31, and the water outlet of cold source water pump 30 is connect with the second overflow valve 29,
Second overflow valve 29 is arranged in 3 circuit of cooling tube, is flowed by the hydrothermal solution of 26 overflow of the first overflow valve by cooling tube 3
Enter cold liquid source 31, the connectivity part setting of the overflow pipe and cooling tube 3 of the second overflow valve 29 is in cold liquid source 31 and cooling tube solenoid valve 8
Between.
After the first overflow valve 26 or the second overflow valve 29 are opened, under the driving of cold source water pump 30 or heat source water pump 27,
Realize circulating for cold liquid or hydrothermal solution, after the first overflow valve 26 or the second overflow valve 29 are closed, overflow valve is opened, by cold liquid
Or hydrothermal solution flows back in cold liquid source 31 or hydrothermal sources 28.
In the present embodiment, temperature-controlled tube routes the two spiral pipeline being parallel to each other compositions, two helix tubes being parallel to each other
Road is respectively heating tube 2 and cooling tube 3, and radiating ribs are provided between adjoining spiral pipeline, and adjacent radiating ribs form spiral shape
Groove, the heating tube 2 and cooling tube 3 are fixedly mounted in spiral groove.
Radiating ribs can increase the contact area between containment portion and cooling tube 3, heating tube 2, to improve heating efficiency, together
When guarantee uniformity that temperature adjusts, while cooling tube 3 can be kept away and contacted with each other with heating tube 2.
As shown in Fig. 2, lead-screw drive mechanism 24 includes positioning pipe 14, the tail portion of positioning pipe 14 is fixed on 22 bottom plate of cavity
Central location, the end of the positioning pipe 14 extend outward to form ring baffle, are cased with rotary sleeve outside the end of positioning pipe 14
The connecting pin of cylinder 17, the turnbarrel 17 and positioning pipe 14 extends inwardly to form annular snap-gauge, the ring baffle resistance
Baffle ring shape snap-gauge slides in and out, and the annular snap-gauge is clipped between two groups of roller bearings 16, is arranged on the outside of positioning pipe 14 limited
Position sleeve 13, the spacing collar 13 are fixed on 14 side wall of positioning pipe by stop screw 15, two groups of Roller Shafts
It holds 16 to be clipped between the side wall and ring baffle of spacing collar 13,17 inner wall of turnbarrel is fixedly installed with inner sleeve
19, the internal diameter of inner sleeve 19 is identical as 14 internal diameter of positioning pipe, and 19 inwall processing of inner sleeve has screw thread, lead screw 12 and inner sleeve
Cylinder 19 is connected by screw-driven, and the lead screw 12 sequentially passes through inner sleeve 19 and positioning pipe 14 is fixedly connected with the piston, institute
The inner sleeve 19 stated is fixedly connected with turnbarrel 17 by positioning ring 20, and the positioning ring 20 is fixedly mounted on by screw
The end face of inner sleeve 19 and turnbarrel 17,17 lateral surface of turnbarrel engages connection with transmission gear 18, described
Transmission gear 18 is fixedly connected with motor output shaft 21, and the motor output shaft 21 and driving motor 25 are sequentially connected.
When transmission gear 18 drives turnbarrel 17 to rotate, turnbarrel 17 and lead screw 12 relatively rotate, due to
Axial displacement cannot occur for turnbarrel 17, therefore, lead screw 12 can be driven axially displaced, and then do back and forth with piston
Movement.
In the present embodiment, driving motor 25 is stepper motor, and the stepper motor is connect with 11 signal of encoder, described
Encoder 11 can control velocity of rotation, rotational frequency, rotation distance and the rotation direction of stepper motor.
Driving motor 25 is connected by retarder with lead screw 12, and the retarder is equipped with encoder, to detect retarder
Revolving speed, thus pass through controller control driving motor 25 revolving speed；25 forward and backward of driving motor rotation drive lead screw 12 just,
Reversion rotation, 12 forward and backward of lead screw rotation band piston are back and forth run in cavity 22；
In the present embodiment, cavity 22 is made of aluminium or polytetrafluoroethylene material, and 22 bottom of cavity is fixed on
On mounting rack, the mounting rack bottom is equipped with idler wheel, and the mounting rack uses engraved structure.
The selection of material and the setting of engraved structure guarantee alleviator weight on the basis of practicability and durability.
It should be noted that the use of such as "upper", "lower", "left", "right", "front", "rear" cited in utility model
Language is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness or
Adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
It should be regarded as the protection scope of the utility model.
Claims (8)
1. the lung function instrument tester of gaseous state in a kind of simulation Human Lung, it is characterised in that: including cavity (22), cavity
(22) it is seal cavity, is internally provided with slidable piston, lead screw (12) is connect with piston drive, and lead screw (12) passes through cavity
(22) bottom, cavity (22) bottom are equipped with lead-screw drive mechanism (24), the lead-screw drive mechanism (24) and driving motor
(25) it is sequentially connected, the driving motor (25) drives lead-screw drive mechanism (24) to rotate and then drives lead screw (12) and piston
It realizes axially reciprocating, tracheae is installed in the cavity wall of separate lead-screw drive mechanism (24) side of the cavity (22)
(23), the tracheae (23) is connected to cavity (22) inner space, the air inlet of the tracheae (23) and lung function instrument to be measured
End connection；
Temperature sensing, humidity sensor (5) and pressure sensor (6), the temperature are provided in the cavity (22)
Sensing is connect with temperature sensor controller (10) signal, and the humidity sensor (5) setting is described in tracheae (23)
Humidity sensor (5) is connect with humidity sensor controller signal, the humidity sensor controller and humidification apparatus signal
Connection, the humidity sensor controller control the gas in cavity (22) by controlling the working condition of humidification apparatus
Humidity, the pressure sensor (6) are connect with detection terminal signaling, and the pressure sensor (6) being capable of real-time detection chamber
Barometric information in body (22) is simultaneously sent to detection terminal；
The lateral surface of the cavity (22) is provided with temperature control pipeline, and the temperature control pipeline is by heating tube (2) and cooling tube
(3) side by side around the spirality pipeline formed, the heating tube (2) and cooling tube (3) are independent pipeline, the heating
(2) and cooling tube (3) are managed by heating tube and cooling tube controller (7), and heating tube (2) is interior to be provided with heating tube solenoid valve
(9), it is provided with cooling tube solenoid valve (8) in cooling tube (3), the cooling tube solenoid valve (8) and heating tube solenoid valve (9) are equal
It is connect with temperature sensor controller (10) signal, the temperature sensor controller (10) controls cooling tube solenoid valve (8)
With the working condition of heating tube solenoid valve (9), the heating tube and cooling tube controller (7) be connected with cold liquid source (31) and
Two groups of water pumps are provided in hydrothermal sources (28), the heating tube and cooling tube controller (7), two groups of water pumps respectively will
The cold night of cold liquid source (31) is pumped into cooling tube (3), and the hydrothermal solution of hydrothermal sources (28) is pumped into heating tube (2).
2. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The temperature sensor stated includes the first temperature sensor (1) and second temperature sensor (4), first temperature sensor
(1) it is separately positioned in cavity (22) inner piston two sides space with second temperature sensor (4), first temperature sensor
(1) it is separately positioned on the bottom wall at cavity (22) both ends with second temperature sensor (4), the first temperature sensor (1) and second
Temperature sensor (4) is connect with temperature sensor controller (10) signal.
3. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The humidification apparatus stated is humidification machine, and the escape pipe of the humidification machine is connected to the junction of tracheae (23) Yu cavity (22).
4. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The heating tube and cooling tube controller (7) stated are interior to be provided with heat source water pump (27) and cold source water pump (30), the heat source water pump
(27) water inlet end is connect with hydrothermal sources (28), and the water outlet of heat source water pump (27) is connect with the first overflow valve (26), described
First overflow valve (26) is arranged in heating tube (2) circuit, passes through heating tube (2) by the hydrothermal solution of the first overflow valve (26) overflow
It flows into hydrothermal sources (28), the overflow pipe of the first overflow valve (26) and the connectivity part setting of heating tube (2) in hydrothermal sources (28) and add
Between heat pipe solenoid valve (9), the water inlet end of the cold source water pump (30) is connect with cold liquid source (31), and cold source water pump (30) goes out
Water end (W.E.) is connect with the second overflow valve (29), and second overflow valve (29) is arranged in cooling tube (3) circuit, is overflow by first
The hydrothermal solution for flowing valve (26) overflow flows into cold liquid source (31), the overflow pipe and cooling tube of the second overflow valve (29) by cooling tube (3)
(3) connectivity part is arranged between cold liquid source (31) and cooling tube solenoid valve (8).
5. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The temperature-controlled tube stated routes the two spiral pipeline being parallel to each other compositions, and two spiral pipelines being parallel to each other are respectively heating tube
(2) and cooling tube (3) radiating ribs, are provided between adjoining spiral pipeline, adjacent radiating ribs form spiral groove, described
Heating tube (2) and cooling tube (3) are fixedly mounted in spiral groove.
6. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The lead-screw drive mechanism (24) stated includes positioning pipe (14), and the tail portion of positioning pipe (14) is fixed on the central position of cavity (22) bottom plate
It sets, the end of the positioning pipe (14) extends outward to form ring baffle, is cased with turnbarrel outside the end of positioning pipe (14)
(17), the connecting pin of the turnbarrel (17) and positioning pipe (14) extends inwardly to form annular snap-gauge, the annular gear
Plate stops annular snap-gauge to slide in and out, and the annular snap-gauge is clipped between two groups of roller bearings (16), on the outside of positioning pipe (14)
It being provided with spacing collar (13), the spacing collar (13) is fixed on positioning pipe (14) side wall by stop screw (15),
Two groups of roller bearings (16) are clipped between the side wall and ring baffle of spacing collar (13), the turnbarrel (17)
Inner wall is fixedly installed with inner sleeve (19), the internal diameter of inner sleeve (19) inner sleeve identical as positioning pipe (14) internal diameter, described
(19) inwall processing has screw thread, and lead screw (12) is connect with inner sleeve (19) by screw-driven, and the lead screw (12) is successively worn
It crosses inner sleeve (19) and positioning pipe (14) is fixedly connected with the piston, the inner sleeve (19) and turnbarrel (17) pass through positioning
Ring (20) is fixedly connected, and the positioning ring (20) is fixedly mounted on the end of inner sleeve (19) and turnbarrel (17) by screw
Face, the turnbarrel (17) lateral surface engage connection with transmission gear (18), and the transmission gear (18) and motor are defeated
Shaft (21) is fixedly connected, and the motor output shaft (21) and driving motor (25) are sequentially connected.
7. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as claimed in claim 6, it is characterised in that: institute
The driving motor (25) stated is stepper motor, and the stepper motor is connect with encoder (11) signal, the encoder
(11) velocity of rotation, rotational frequency, rotation distance and the rotation direction of stepper motor can be controlled.
8. the lung function instrument tester of gaseous state in a kind of simulation Human Lung as described in claim 1, it is characterised in that: institute
The cavity (22) stated is made of aluminium or polytetrafluoroethylene material, and the cavity (22) bottom is fixed on mounting rack, institute
The mounting rack bottom stated is equipped with idler wheel, and the mounting rack uses engraved structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821348534.3U CN208476315U (en) | 2018-08-21 | 2018-08-21 | The lung function instrument tester of gaseous state in a kind of simulation Human Lung |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821348534.3U CN208476315U (en) | 2018-08-21 | 2018-08-21 | The lung function instrument tester of gaseous state in a kind of simulation Human Lung |
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| Publication Number | Publication Date |
|---|---|
| CN208476315U true CN208476315U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821348534.3U Active CN208476315U (en) | 2018-08-21 | 2018-08-21 | The lung function instrument tester of gaseous state in a kind of simulation Human Lung |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110811577A (en) * | 2019-11-18 | 2020-02-21 | 长春大学 | Human respiratory system's analogue means |
-
2018
- 2018-08-21 CN CN201821348534.3U patent/CN208476315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110811577A (en) * | 2019-11-18 | 2020-02-21 | 长春大学 | Human respiratory system's analogue means |
| CN110811577B (en) * | 2019-11-18 | 2022-08-09 | 长春大学 | Human respiratory system's analogue means |
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