CN211400208U

CN211400208U - Air exhaust device of test instrument

Info

Publication number: CN211400208U
Application number: CN201922011313.8U
Authority: CN
Inventors: 单晓莹; 王文清
Original assignee: Liaoning Institute Of Geology And Mineral Resources Co ltd
Current assignee: Liaoning Institute Of Geology And Mineral Resources Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-09-01
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses an exhaust device of test instrument, including exhaust duct, analytical instrument, response mechanism, filter cartridge and air exhauster, exhaust duct's input is the fill form, and exhaust duct's output top is fixed with rain-proof cover, response mechanism arranges exhaust duct input opening inside directly over, and response mechanism includes auxiliary impeller, pivot one, torque sensor, pivot two, mount and impeller. The utility model discloses an install exhaust duct, analytical instrument, response mechanism, filter cartridge and air exhauster, can be effectively when analytical instrument detects the reactant gas that compound catalysis produced in the twinkling of an eye, it is rotatory with the pressure differential promotion main impeller through rising gas and ambient gas for the moment of torsion transient increase of pivot one, and then control air exhauster is from opening and take reactant gas out to the external environment, the air flow of having promoted experimental environment, reactant gas has been avoided in the experimentation to the influence of experimental result and to tester's health damage, therefore, the clothes hanger is strong in practicability.

Description

Air exhaust device of test instrument

Technical Field

The utility model relates to an exhaust device technical field specifically is a test instrument's exhaust device.

Background

The exhaust device is the indispensable device in analytical instrument test working process, is mainly used for with the gas after the test reaction, discharges outdoor from indoor through air pipe, because has had exhaust device's existence, just can promote the air flow of test environment, ensures tester's healthy.

For example, when the existing analyzer analyzes compounds that catalyze reactions of peroxides, carbonic acid substances and nitric acid substances, the substances can instantly generate a large amount of gas during the catalysis process, so that the gas generated by the reactions can be instantly filled into the experimental environment to cause air pollution, while the existing exhaust device often forgets to open the exhaust due to negligence of workers during the actual work, if the air in the experimental environment is not timely exhausted in the side view process, the body of a tester can be damaged, and the reaction gas generated by the analyzer can carry out secondary reaction with a test object, so that the accuracy of the test result of the test object can be affected, meanwhile, the existing exhaust device mostly directly exhausts the gas into the external environment, so that the external environment is easily polluted to a certain extent, and the noise generated by the operation of the exhaust device can affect the mind of the workers, the comfort level of workers in the testing process is reduced, so that a device which can push the exhaust device to be self-started through the pressure difference between gas generated by material catalytic reaction and ambient gas is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exhaust device of test instrument to current exhaust device who proposes in solving above-mentioned background art can't be from opening, easily exists reaction gas and causes the influence and produce the phenomenon of harm to tester's health to test result's accuracy, and the gaseous easy polluted environment of emission, the noise that exhaust device produced easily reduces staff's comfort level problem.

In order to achieve the above object, the utility model provides a following technical scheme: an exhaust device of a test instrument comprises an exhaust pipeline, an analytical instrument, a sensing mechanism, a filter box and an exhaust fan, wherein the section of the exhaust pipeline is of an N-shaped structure, the input end of the exhaust pipeline is in a bucket shape, a rain cover is fixed at the top of the output end of the exhaust pipeline, an air passage II is uniformly arranged on the side wall of the exhaust pipeline under the rain cover, an opening is arranged at the bottom end of the input end of the exhaust pipeline, an air passage I is uniformly arranged on the outer side wall of the exhaust pipeline above the opening, air guide seats are connected to the outer side walls of the two ends above the input end of the exhaust pipeline, the analytical instrument is arranged under the input end of the exhaust pipeline, the sensing mechanism is arranged right above the opening of the input end of the exhaust pipeline and comprises an auxiliary impeller, a rotating shaft I, a torque sensor, a rotating shaft II, a fixing frame and a main impeller, a fixing frame is fixed in the, a spoke frame is fixed inside the fixing frame, a first rotating shaft is vertically fixed in the center of the spoke frame through a bearing, a main impeller is sleeved at one end of the first rotating shaft below the fixing frame, a support torque sensor is arranged in an exhaust pipeline above the air guide seat through a support, the support is of a cross-shaped structure, the other end of the first rotating shaft is fixedly connected with the torque sensor through the bearing, a first gear is sleeved at the upper end of the first rotating shaft, 2 through grooves are formed in the side wall of the exhaust pipeline inside the air guide seat, mounting frames are fixed inside the through grooves and are of a cross-shaped structure, a second rotating shaft is transversely fixed between the mounting frames through the bearing, a second gear is sleeved outside the center of the second rotating shaft, the second gear is meshed with the first gear, two ends of the second rotating shaft extend into the 2 air guide seats and are fixed with auxiliary impellers, and an access door is hinged on the side wall in the middle of the exhaust pipeline, and the inside of the exhaust pipeline at the inner side of the access door is fixed with a filter box, the inside of the filter box is uniformly fixed with an activated carbon filter plate, the inside of the filter box close to one end of the output end of the exhaust pipeline is fixed with an exhaust fan, and the inner side wall of the exhaust pipeline is provided with sound absorbing cotton.

Preferably, the outer side of the exhaust pipeline is connected with a controller, the torque sensor is electrically connected with the controller, and the exhaust fan is electrically connected with the controller.

Preferably, the outer side wall of the air guide seat, the inner part of the first air passage and the opening are respectively fixed with a dustproof screen plate.

Preferably, the first air passage has a height dimension larger than that of the main impeller.

Preferably, the inside of filter cartridge both ends exhaust duct all is equipped with the stopper, and the both ends of filter cartridge all are equipped with strip gas tank.

Preferably, the cross-section of the rain cover is designed to be a triangular structure, and the size of the bottom end of the rain cover is larger than that of the output end of the exhaust pipeline.

Compared with the prior art, the beneficial effects of the utility model are that: the exhaust device of the test instrument can effectively generate a large amount of gas instantaneously through compound catalytic reaction in the detection process of the analysis instrument by installing an exhaust pipeline, an analysis instrument, a sensing mechanism, a filter box and an exhaust fan, so that the gas and environmental gas generate pressure difference and push a main impeller to rotate, the torque of a first rotating shaft is increased in a clockwise manner, a controller controls the exhaust fan to be started automatically, air is pumped from the input end of the exhaust pipeline to the output end, the environmental gas is automatically exhausted to the external environment, the air flow of the experimental environment is effectively promoted, the influence of reaction gas on the experimental result and the damage to the body of a tester in the experimental process are avoided, the gas can be adsorbed and filtered through an active carbon filter plate in the filter box in a drawing mode, harmful substances in the gas are removed, the environmental pollution of the exhausted gas is effectively reduced, and meanwhile, the device is provided with a second rotating shaft and an auxiliary impeller, the device can effectively enable the first rotating shaft to rotate through the first gear and the second gear in the rotating process, and further can be linked with the second rotating shaft and the auxiliary impeller to rotate, so that indoor air is continuously sucked into the air guide seat, the air inlet speed of the exhaust pipeline is improved, when the flow speed of reaction gas is reduced to the value which is not enough to meet the requirement that a torque sensor limits the corresponding rotating speed of torque, the air flow of the experimental environment can be still improved through the rotation of the auxiliary impeller, the aim of discharging the reaction gas to the outdoor is achieved, the phenomenon that workers forget to open the exhaust air due to negligence in the experimental process is effectively avoided, the accuracy of the experimental data result and the personal safety of the workers are ensured, the sound-absorbing cotton can absorb the environment and the noise generated when the elements work in the working process of the device, the noise-reducing and silencing effect is achieved, the comfort of the, the practicability is strong.

Drawings

FIG. 1 is a schematic side sectional view of the device of the present invention;

fig. 2 is a schematic view of the assembly structure of the fixing frame and the main impeller of the present invention.

In the figure: 1. an exhaust duct; 2. a gas guide seat; 3. a secondary impeller; 4. a first gear; 5. a first rotating shaft; 6. a first air passage; 7. an analytical instrument; 8. a torque sensor; 9. sound-absorbing cotton; 10. an access door; 11. a filter cartridge; 12. an activated carbon filter plate; 13. a limiting block; 14. an exhaust fan; 15. a rain cover; 16. an air passage II; 17. a second rotating shaft; 18. a second gear; 19. a fixed mount; 20. a main impeller; 21. a spoke frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides an embodiment: an exhaust device of a test instrument comprises an exhaust pipeline 1, an analytical instrument 7, a sensing mechanism, a filter box 11 and an exhaust fan 14, wherein the section of the exhaust pipeline 1 is of an N-shaped structure, the input end of the exhaust pipeline 1 is of a bucket shape, a rain cover 15 is fixed at the top of the output end of the exhaust pipeline 1, the section of the rain cover 15 is of a triangular structure, the size of the bottom end of the rain cover 15 is larger than that of the output end of the exhaust pipeline 1, so that environmental rainwater is shielded and guided by the rain cover 15, damage to internal elements caused by rainwater entering the interior of the exhaust pipeline 1 along the side wall of the exhaust pipeline 1 is avoided, the service life of each element in the device is ensured, an air channel II 16 is uniformly arranged on the side wall of the exhaust pipeline 1 under the rain cover 15, an opening is arranged at the bottom end of the input end of the exhaust pipeline 1, an air channel I6 is uniformly arranged, the outer side wall of the air guide seat 2, the inner part of the air passage I6 and the opening are respectively fixed with a dustproof screen plate, so that environmental dust is isolated by the dustproof screen plate, the dust is prevented from entering the exhaust pipeline 1, the damage of internal elements caused by the dust gathering on the internal elements of the exhaust pipeline 1 is avoided, the later maintenance cost of the device is reduced, the outer side walls at two ends above the input end of the exhaust pipeline 1 are respectively connected with the air guide seat 2, the analytical instrument 7 is arranged right below the input end of the exhaust pipeline 1, the sensing mechanism is arranged right above the opening at the input end of the exhaust pipeline 1 and comprises a secondary impeller 3, a rotating shaft I5, a torque sensor 8, a rotating shaft II 17, a fixing frame 19 and a main impeller 20, a fixing frame 19 is fixed in the inner wall of the output end of the exhaust pipeline 1 above the air passage I6, a spoke frame 21 is fixed in the fixing frame 19, and a rotating shaft I5, the main impeller 20 is sleeved at one end of the rotating shaft 5 below the fixing frame 19, the height of the air passage 6 is larger than that of the main impeller 20, so that gas generated by reaction in the test process enters the input end of the exhaust pipeline 1 through the air passage 6 or the opening, the main impeller 20 is pushed to rotate through the reaction gas, the linkage device works to discharge indoor air to the outside through the exhaust pipeline 1, the flowability of the air is improved, the influence on the reaction result of a test object is avoided, the damage of the reaction gas to the body health of a tester is reduced, the support torque sensor 8 passes through the inside of the exhaust pipeline 1 above the air guide seat 2, the support is in a cross-shaped structure, the other end of the rotating shaft 5 is fixedly connected with the torque sensor 8 through a bearing, the gear I4 is sleeved at the upper end of the rotating shaft 5, and through grooves are formed in the side walls of the exhaust pipeline 1 inside the 2 air guide seats 2, the through grooves are fixed with mounting frames which are arranged in a cross-shaped structure, a second rotating shaft 17 is transversely fixed between the mounting frames through a bearing, a second gear 18 is sleeved outside the center of the second rotating shaft 17, the second gear 18 is meshed with a first gear 4, two ends of the second rotating shaft 17 extend into 2 air guide seats 2 and are fixed with auxiliary impellers 3, the side wall of the middle part of the exhaust pipeline 1 is hinged with an access door 10, a filter box 11 is fixed inside the exhaust pipeline 1 inside the access door 10, an active carbon filter plate 12 is uniformly fixed inside the filter box 11, limiting blocks 13 are arranged inside the exhaust pipeline 1 at two ends of the filter box 11, strip-shaped air grooves are arranged at two ends of the filter box 11, so that the fixing position of the filter box 11 is limited through the limiting blocks 13, the filter box 11 is convenient to be fixedly assembled and disassembled, and the convenience for later maintenance when the active carbon filter plate 12 inside the filter box 11 is replaced is improved, meanwhile, the strip-shaped air groove can effectively ensure that air flows in the filter box 11, so that the extracted air is filtered by the activated carbon filter plate 12 in the filter box 11 and then discharged into the environment, the pollution of reaction gas to the environment is reduced, an exhaust fan 14 is fixed in the filter box 11 close to one end of the output end of the exhaust pipeline 1, a controller is connected to the outer side of the exhaust pipeline 1, the torque sensor 8 is electrically connected with the controller, the exhaust fan 14 is electrically connected with the controller, so that the instantaneously generated gas and the environmental gas generate pressure difference in the test process and push the main impeller 20 to rotate, the torque of the rotating shaft I5 instantaneously reaches the limit value of the torque sensor 8, the torque sensor 8 transmits a signal to the controller, the controller controls the exhaust fan 14 to be electrified to work, the air is extracted from the output end of the exhaust pipeline 1, and the phenomenon that a worker forgets to open exhaust air due to negligence in the, effectively make air exhauster 14 from opening work, promoted experimental environment's air flow, avoided reaction gas to the influence of experimental result and to cause the damage to testing personnel's health in the experimentation, and be equipped with on exhaust duct 1's the inside wall and inhale sound cotton 9.

The working principle is as follows: when the device is used, firstly, the controller of the device is connected with an external power supply, the analyzer 7 is turned on, gas generated by catalytic reaction of corresponding compounds is detected by the analyzer 7, when the compounds generate a large amount of gas instantly during the catalytic reaction, the rising gas enters the input end of the exhaust pipeline 1 through the air passage I6 or the opening, the flow of the gas generates pressure difference to push the main impeller 20 to rotate, at the moment, the main impeller 20 is linked with the rotating shaft I5 to rotate, the torque of the rotating shaft I5 is increased in time, the torque sensor 8 transmits a signal to the controller, so that the controller controls the exhaust fan 14 to be powered on to work, the air is pumped from the input end to the output end of the exhaust pipeline 1, the self-starting of the exhaust mechanism is realized, the phenomenon that a worker forgets to start exhaust air due to negligence in the experimental process is avoided, and the pumped gas can preferentially enter the filter, harmful substances in the air are effectively removed, the filtered air is guided into the external environment through the air passage II 16, the environmental pollution of the discharged air is reduced, the air flow of the experimental environment is effectively promoted, the influence of reaction gas on the experimental result and the damage to the body of a tester in the experimental process are avoided, the rotating shaft I5 rotates and can rotate through the gear I4 and the gear II 18 in an engagement manner in the rotating process, the rotating shaft II 17 and the auxiliary impeller 3 are linked to rotate, indoor air is continuously pumped into the air guide seat 2, the air inlet speed of the exhaust pipeline 1 is improved, so that when the flow speed of the reaction gas is reduced to the value which is not enough to meet the corresponding rotating speed of the limited torque of the torque sensor 8, the air flow of the experimental environment can be improved through the rotation of the auxiliary impeller 3 by the device, the aim of discharging the reaction gas to the outside is achieved, and the accuracy of the experimental data result and the personal safety of workers are effectively avoided, inhale the noise that sound cotton 9 can adsorb environment and each component during operation produced in the device working process simultaneously, reach the effect of the silence of making an uproar of falling, effectively guaranteed experimental environment's travelling comfort, device overall structure is simple, and the practicality is strong.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an exhaust device of test instrument, includes exhaust duct (1), analytical instrument (7), response mechanism, filter cartridge (11) and air exhauster (14), its characterized in that: the cross-section of exhaust duct (1) is established to "N" style of calligraphy structure, and the input of exhaust duct (1) is the fill form, and the output top of exhaust duct (1) is fixed with rain-proof cover (15), evenly be equipped with air flue two (16) on the lateral wall of exhaust duct (1) under rain-proof cover (15), and the bottom of exhaust duct (1) input is equipped with the opening, evenly be equipped with air flue one (6) on the lateral wall of opening top exhaust duct (1), all be connected with air guide seat (2) on the lateral wall at exhaust duct (1) input top both ends, and analytical instrument (7) arrange the input of exhaust duct (1) in under, induction mechanism arranges exhaust duct (1) input opening in directly over inside, and induction mechanism includes vice impeller (3), pivot one (5), torque sensor (8), pivot two (17), The exhaust device comprises a fixing frame (19) and a main impeller (20), wherein the fixing frame (19) is fixed in the inner wall of the output end of an exhaust pipeline (1) above an air passage I (6), a spoke frame (21) is fixed in the fixing frame (19), a first rotating shaft (5) is vertically fixed in the center of the spoke frame (21) through a bearing, the main impeller (20) is sleeved at one end of the first rotating shaft (5) below the fixing frame (19), a bracket torque sensor (8) is arranged in the exhaust pipeline (1) above an air guide seat (2), the bracket is of a cross-shaped structure, the other end of the first rotating shaft (5) is fixedly connected with the torque sensor (8) through the bearing, a first gear (4) is sleeved at the upper end of the first rotating shaft (5), through grooves are formed in the side walls of the exhaust pipeline (1) inside the air guide seat (2), mounting frames are fixed in the through grooves, and are of the mounting frames are of the cross-, the utility model discloses a filter, including mounting bracket, be fixed with pivot two (17) transversely through the bearing between the mounting bracket, the outside cover of pivot two (17) central authorities is equipped with gear two (18), and gear two (18) and gear (4) intermeshing, the both ends of pivot two (17) all extend to the inside of 2 air guide seat (2) and are fixed with auxiliary impeller (3), it has access door (10) to articulate on the lateral wall at exhaust duct (1) middle part, and the inside of access door (10) inboard exhaust duct (1) is fixed with filter box (11), and the inside of filter box (11) evenly is fixed with activated carbon filter (12), the inside that filter box (11) are close to exhaust duct (1) output one end is fixed with air exhauster (14), and is equipped with on the inside wall of exhaust duct (1) and inhales sound cotton (9).

2. The exhaust device of the test instrument according to claim 1, wherein: the outer side of the exhaust pipeline (1) is connected with a controller, the torque sensor (8) is electrically connected with the controller, and the exhaust fan (14) is electrically connected with the controller.

3. The exhaust device of the test instrument according to claim 1, wherein: and dustproof mesh plates are fixed at the outer side wall of the air guide seat (2), the inner part of the air passage I (6) and the opening.

4. The exhaust device of the test instrument according to claim 3, wherein: the height dimension of the first air channel (6) is larger than that of the main impeller (20).

5. The exhaust device of the test instrument according to claim 1, wherein: the inside of filter box (11) both ends exhaust duct (1) all is equipped with stopper (13), and the both ends of filter box (11) all are equipped with strip gas groove.

6. The exhaust device of the test instrument according to claim 1, wherein: the cross-section of rain-proof cover (15) is established to triangle-shaped structure, and the bottom size of rain-proof cover (15) is greater than the size of exhaust duct (1) output.