CN107694654A

CN107694654A - Bench for chemistry experiment

Info

Publication number: CN107694654A
Application number: CN201711190574.XA
Authority: CN
Inventors: 刘玉云
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2018-02-16
Also published as: CN107715942A; CN107649229A; CN107665619A; CN106111231A; CN107694653A; CN106111231B; CN107694655A; CN107670747A; CN107684944A; CN107890890A

Abstract

The invention discloses a kind of bench for chemistry experiment, including bearing assembly, temperature measurement component and gas collection assembly, the bearing assembly includes pedestal and is perpendicularly fixed at the backboard on the pedestal by fixing device, experiment equipment storage rack is provided with the right side of the backboard front end face, test tube fixed mount is provided with the left of the backboard, gas storage test tube fixed mount is provided with the right side of the test tube fixed mount, the present invention can facilitate fetching or depositing for experimental apparatus, the unnecessary damage of experimental apparatus can be avoided simultaneously, and the storage of kinds of experiments equipment can be carried out, and then a variety of chemical experiments can be demonstrated, its is versatile, results of learning can be lifted, ensure teaching vivid and interesting, the present invention is adapted to the extensive use in chemistry teaching.

Description

Bench for chemistry experiment

Technical field

The present invention relates to a kind of chemistry teaching apparatus, specifically a kind of bench for chemistry experiment.

Background technology

For student when doing chemical experiment, experimental bench is very necessary equipment, and in existing chemistry teaching, just lack Such in-class experiment device, so that chemistry teaching does not reach preferable effect.

The content of the invention

The technical problem to be solved in the present invention, it is to provide a kind of bench for chemistry experiment, in the presence of can solve the problem that prior art Above mentioned problem.

The present invention to achieve the above object, is achieved through the following technical solutions：

A kind of bench for chemistry experiment, including bearing assembly, temperature measurement component and gas collection assembly, the bearing assembly include pedestal and Backboard on the pedestal is perpendicularly fixed at by fixing device, experiment equipment storage is provided with the right side of the backboard front end face Frame, test tube fixed mount is provided with the left of the backboard, gas storage test tube is provided with the right side of the test tube fixed mount Fixed mount, the test tube fixed mount and the gas storage test tube fixed mount are structure as a whole, on the test tube fixed mount Equally distributed test tube groove is provided with, equally distributed gas storage cuvette groove, institute are provided with the gas storage test tube fixed mount State and cuvette groove corresponding with the test tube groove is provided with pedestal, be provided with the right side of the cuvette groove and tried with the gas storage Fixing groove corresponding to tube seat, it is vertically arranged with and the reality directly over the test tube fixed mount on the backboard The quantity of cuvette groove and the temperature measurement component gliding groove that position is corresponding are tested, the temperature measurement component gliding groove is located on the backboard Top be provided with vertical with temperature measurement component gliding groove temperature measurement component translation groove, the temperature measurement component gliding groove and described Temperature measurement component translation groove is groove, and the gas collection component is arranged on the front end face of the backboard, the temperature measurement component Including thermometer and thermometer fixed mount, the leading portion of the thermometer fixed mount is provided with through hole, and temperature is provided with the through hole Fixed rubber ring is counted, the thermometer is interference fitted through the thermometer fixed rubber ring and with the thermometer fixed rubber ring, institute The rear end for stating thermometer fixed mount is fixed with temperature measurement component fixed disk, and the rear end of the temperature measurement component fixed disk is provided with sliding side Block, the rear end face of the temperature measurement component fixed disk coordinates with the front end face of the backboard so that the sliding square and the thermometric Component gliding groove or temperature measurement component translation groove are slidably matched, and the rear end of the sliding square is provided with threaded post, the spiral shell The rear end of line post coordinates with internal thread cylinder screw thread, and the rear end of the internal thread cylinder is fixed with control crank, the internal thread The external diameter of cylinder and the temperature measurement component fixed disk is more than the width of the temperature measurement component gliding groove and temperature measurement component translation groove Degree.

As restriction, the temperature measurement component translation groove is provided with survey on the lower plane away from the temperature measurement component gliding groove Warm component storage tank.

Limited as another kind, the test tube fixed mount and the experiment equipment storage rack are located on the backboard Between be provided with gas collection component fixing hole, level height of the gas collection component fixing hole on the backboard is higher than The height of the test tube fixed mount and the experiment equipment storage rack, the gas collection component include collecting pipe and collection Tube fixing device, the upper opening of the collecting pipe are provided with taper plug, and the taper plug is provided with air admission hole and steam vent To connect air inlet pipe and blast pipe respectively, described air inlet pipe one end is arranged at the collection bottom of the tube and the other end stretches out the cone Shape plug connects setting with connection rubber tube, and the connection rubber tube is connected with the air induction conduit, and the air induction conduit passes through air inlet Plug, the air inlet plug seals when the collecting pipe collects gas with the opening of the cylinder to be coordinated, the collecting pipe The leading portion of fixed mount is provided with collecting pipe retainer plate, and the leading portion of the collecting pipe retainer plate is provided with pretension opening, the collecting pipe with The collecting pipe retainer plate assembling, the rear end for collecting tube fixing device are fixed with gas collection component fixed disk, the gas The rear end of collection assembly fixed disk is provided with rotary threaded column, rear end face and the backboard of the gas collection component fixed disk Front end face coordinate so that the rotary threaded column is rotatably assorted with gas collection component fixing hole, the rotary threaded column rear end Coordinate with internal thread rotor screw thread, the rear end of the internal thread rotor is fixed with rotary handle, the internal thread rotation The external diameter for turning cylinder and gas collection assembly fixed disk is more than the diameter of the gas collection component fixing hole.

Limited as another kind, test tube storage circular groove and beaker storage tank, institute are provided with the experiment equipment storage rack Pedestal is stated to be provided with and test tube storage circular groove quantity identical test tube storage branch with test tube storage circular groove corresponding position Frame, described test tube storage bracket one end is connected with the pedestal and the other end deposits the home position of circular groove through the test tube Place, the pedestal are being provided with beaker fixing groove with the beaker storage tank corresponding position.

Limited as another kind, the fixing device includes vertical fixed plate, horizontal fixed plate and triangular plate, institute State an end of vertical fixed plate to be connected with an end of the horizontal fixed plate, the triangular plate is mutually perpendicular to Vertical centerline opening position of two sides respectively with the vertical fixed plate and the horizontal fixed plate be connected, it is described vertical Fixed plate and the horizontal fixed plate are evenly equipped with fixing nut at the both ends of vertical centerline.

Limited as further, vertical fixed plate, the horizontal fixed plate and the triangular plate one Body machine-shaping.

As restriction, the fixing device is 4, and the junction of the pedestal and the backboard is provided with four fixations Portion, four fixed parts are located at two ends on front side of the backboard and two ends of rear side, four fixations respectively Device is coordinated so that four fixing devices are fixed on into four fixed parts by screw and the fixing nut respectively.

Limited as further, be provided with lightening hole on the triangular plate, the lightening hole is triangle.

The present invention as a result of above-mentioned structure, its compared with prior art, acquired technological progress is：

（1）The present invention can facilitate fetching or depositing for experimental apparatus, while can avoid the unnecessary damage of experimental apparatus, and energy The storage of kinds of experiments equipment is carried out, and then a variety of chemical experiments can be demonstrated, its is versatile, can lift results of learning, ensures Teaching vivid and interesting, the present invention are adapted to the extensive use in chemistry teaching；

（2）The present invention is provided with temperature measurement component gliding groove and temperature measurement component translation groove, ensures that temperature measurement component can wherein freely Sliding, temperature survey can be carried out to multiple test tubes by one group of temperature measurement component, it is versatile；

（3）The gas collection component of the present invention can be rotated, and the small gas of density ratio air is collected when Open Side Down for collection assembly Body, the big gas of density ratio air is collected when collection assembly opening upwards, to reach preferable experiment effect.

To sum up, the present invention is simple in construction, disclosure satisfy that chemistry teaching demand, and can reach good teaching efficiency.

Brief description of the drawings

Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, with embodiments of the invention It is used to explain the present invention together, is not construed as limiting the invention.

Fig. 1 is the overall structure diagram described in the embodiment of the present invention；

Fig. 2 is the front portion structure schematic diagram of the bearing assembly described in the embodiment of the present invention；

Fig. 3 is the rear structure schematic diagram of the bearing assembly described in the embodiment of the present invention；

Fig. 4 is the structural representation of the temperature measurement component described in the embodiment of the present invention；

Fig. 5 is the structural representation of the gas collection component described in the embodiment of the present invention.

In the accompanying drawings：1st, bearing assembly；111st, backboard；112nd, gas collection component fixing hole；113rd, temperature measurement component is deposited Groove；114th, temperature measurement component translation groove；115th, temperature measurement component gliding groove；121st, pedestal；122nd, cuvette groove；123rd, test tube storage branch Frame；124th, beaker fixing groove；125th, fixing groove；131st, vertical fixed plate；132nd, horizontal fixed plate；133rd, triangular plate； 134th, fixing nut；135th, lightening hole；141st, test tube fixed mount；142nd, test tube groove；143rd, gas storage test tube fixed mount； 144th, gas storage cuvette groove；151st, experiment equipment storage rack；152nd, test tube storage circular groove；153rd, beaker storage tank；2nd, temperature measurement component； 211st, thermometer；212nd, thermometer fixed mount；213rd, thermometer fixed rubber ring；214th, temperature measurement component fixed disk；215th, sliding side Block；216th, threaded post；217th, internal thread cylinder；218 control cranks；3rd, gas collection component；311st, collecting pipe；312nd, conical rubber Plug；313rd, blast pipe；314th, air inlet pipe；315th, connection rubber tube；316th, air induction conduit；317th, air inlet plug；318th, cylinder； 321st, collecting pipe retainer plate；322 pretension openings；323rd, tube fixing device is collected；324th, gas collection component fixed disk；325th, rotate Threaded post；326th, internal thread rotor；327th, rotary handle.

Embodiment

With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only explanation is passed through Mode describes some one exemplary embodiments of the present invention.Undoubtedly, one of ordinary skill in the art will recognize, In the case of without departing from the spirit and scope of the present invention, described embodiment can be repaiied with a variety of modes Just.Therefore, accompanying drawing and description are inherently illustrative, are not intended to limit the scope of the claims.

It should be noted that the herein presented noun of locality " forward and backward " is to be fixed on backboard 111

On the basis of plane during pedestal 121 where backboard 111, wherein, " preceding " refers to backboard 111 towards the side of temperature measurement component 2 To " rear " refers to that backboard 111 deviates from the direction of temperature measurement component 2, it is to be understood that the appearance of the above-mentioned noun of locality merely to Technical scheme is clearly stated, the claimed technical scheme of the present invention is not construed as limiting.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, bench for chemistry experiment according to embodiments of the present invention, including bearing assembly 1, thermometric Component 2 and gas collection assembly 3, the bearing assembly include pedestal 121 and are perpendicularly fixed at the pedestal by fixing device Backboard 111 on 121, the front end face of backboard 111 right side are provided with experiment equipment storage rack 151, and the left side of the backboard 1 is set Test tube fixed mount 141 is equipped with, the right side of the test tube fixed mount 141 is provided with gas storage test tube fixed mount 143, described Test tube fixed mount 141 and the gas storage test tube fixed mount 143 are structure as a whole, and are set on the test tube fixed mount 141 Equally distributed test tube groove 142 is equipped with, equally distributed gas storage cuvette groove is provided with the gas storage test tube fixed mount 143 144, cuvette groove 122 corresponding with the test tube groove 142, the right side of the cuvette groove 122 are provided with the pedestal 121 Fixing groove 125 corresponding with the gas storage cuvette groove 144 is provided with, is fixed on the backboard 111 positioned at the test tube The surface of frame 141 is vertically arranged with the temperature measurement component gliding groove corresponding with the quantity of the test tube groove 142 and position 115, the top positioned at the temperature measurement component gliding groove 115 on the backboard 111 is provided with and the temperature measurement component gliding groove 115 vertical temperature measurement component translation grooves 114, the temperature measurement component gliding groove 115 and temperature measurement component translation groove 114 are logical Groove, the gas collection component 3 are arranged on the front end face of the backboard 111, and the temperature measurement component 2 includes the He of thermometer 211 Thermometer fixed mount 212, the leading portion of the thermometer fixed mount 212 are provided with through hole, and being provided with thermometer in the through hole fixes Cushion rubber 213, the thermometer 211 are matched somebody with somebody through the thermometer fixed rubber ring 213 and with the interference of thermometer fixed rubber ring 213 Close, the rear end of the thermometer fixed mount 212 is fixed with temperature measurement component fixed disk 214, after the temperature measurement component fixed disk 214 End is provided with sliding square 215, the front end face of the rear end face of the temperature measurement component fixed disk 214 and the backboard 111 coordinate with The sliding square 215 is set to be slidably matched with the temperature measurement component gliding groove 115 or temperature measurement component translation groove 114, it is described The rear end of sliding square 215 is provided with threaded post 216, and rear end and the screw thread of internal thread cylinder 217 of the threaded post 216 coordinate, The rear end of the internal thread cylinder 217 is fixed with control crank 218, and the internal thread cylinder 217 and the temperature measurement component are fixed The external diameter of disk 214 is more than the width of the temperature measurement component gliding groove 115 and temperature measurement component translation groove 114.

In the present invention, cuvette groove 122 and fixing groove 125 are the circular troughs processed on pedestal 121, cuvette groove 122 with Test tube is fixed together for test tube groove 142, and fixing groove 125 is entered together with gas storage cuvette groove 144 to gas storage test tube Row is fixed, so as to ensure the stabilization of test tube fixation.

In temperature measurement component 2, thermometer fixed rubber ring 213 uses integral structure, while temperature with thermometer fixed mount 212 Degree meter fixed rubber ring 213 ensures fix stably with the interference fit of thermometer 211, and the rear of thermometer fixed mount 212 is designed with thermometric Fixed disk 214 before component, fixed disk rear 214 is designed with sliding square 215, the design of sliding square 215 rear before temperature measurement component There is threaded post 216, threaded post 216 is connected with the operating mechanism being made up of internal thread cylinder 217 and control crank 218, sliding side Block 215 can slide in temperature measurement component translation groove 114, temperature measurement component gliding groove 115, when operation to temperature measurement component gliding groove During 115 bottom, start to carry out thermometric to experiment, control crank 218 need to be only tightened when optional position is wanted to be locked, you can contracting The distance between fixed disk 214 and internal thread cylinder 217 before short temperature measurement component, realization is fixed.

Further, as shown in figure 3, the temperature measurement component translates groove 114 in the remote temperature measurement component gliding groove 115 Temperature measurement component storage tank 113 is provided with lower plane.

In embodiments of the invention, in non-working condition, sliding square 215 can be deposited temperature measurement component 2 with temperature measurement component Put groove 113 to coordinate, and then temperature measurement component 2 is deposited.

Further, as shown in Fig. 2, Fig. 3, Fig. 5, the He of test tube fixed mount 141 is located on the backboard 111 Gas collection component fixing hole 112, the gas collection component fixing hole are provided between the experiment equipment storage rack 151 112 level height on the backboard 111 is higher than the test tube fixed mount 141 and the experiment equipment storage rack 151 Height, the gas collection component 3 include collecting pipe 311 and collect tube fixing device 323, the top of the collecting pipe 311 is opened Mouth is provided with taper plug 312, and the taper plug 312 is provided with air admission hole and steam vent to connect the He of air inlet pipe 314 respectively Blast pipe 313, described one end of air inlet pipe 314 is arranged at the bottom of collecting pipe 311 and the other end stretches out the taper plug 312 Setting is connected with connection rubber tube 315, the connection rubber tube 315 is connected with the air induction conduit 316, and the air induction conduit 316 is worn Air inlet plug 317 is crossed, the air inlet plug 317 is close with the opening of the cylinder 318 when the collecting pipe 311 collects gas Envelope coordinates, and the leading portion for collecting tube fixing device 323 is provided with collecting pipe retainer plate 321, the leading portion of the collecting pipe retainer plate 321 Provided with pretension opening 322, the collecting pipe 311 assembles with the collecting pipe retainer plate 321, the collection tube fixing device 323 Rear end is fixed with gas collection component fixed disk 324, and the rear end of the gas collection component fixed disk 324 is provided with rotation screw thread Post 325, the rear end face of the gas collection component fixed disk 324 coordinate so that the rotation with the front end face of the backboard 111 Threaded post 325 is rotatably assorted with gas collection component fixing hole 112, the rear end of rotary threaded column 325 and internal thread rotational circle 326 screw threads of cylinder coordinate, and the rear end of the internal thread rotor 326 is fixed with rotary handle 327, the internal thread rotor 326 and gas collection assembly fixed disk 324 external diameter be more than the gas collection component fixing hole 112 diameter.

In an embodiment of the present invention, the top of collecting pipe 311 is designed with taper plug 312 and is sealed in the top of collecting pipe 311, The top of taper plug 312 insertion blast pipe 313 and air inlet pipe 314, wherein one end straight cutting of air inlet pipe 314 to the bottom of collecting pipe 311, The other end stretches out taper plug 312 and is connected with connection rubber tube 315, and connection rubber tube 315 is connected with air induction conduit 316, air induction conduit 316 pass through air inlet plug 317, only air inlet plug 317 need to be filled in into cylinder 318 caused by gas during use.

Collecting pipe retainer plate 321 preferably uses rubber structure, and Front-end Design has pretension opening 322, and pretension opening 322 is set Meter ensures that the cooperation of collecting pipe retainer plate 321 and collecting pipe is more stable, and the retainer plate rear of collecting pipe 321 is designed with collecting pipe and consolidated Determine frame 323, collect the rear of tube fixing device 323 and be designed with fixed disk 324 before gas collection component, fixed before gas collection component The rear of disk 324 is designed with rotary threaded column 325, and rotary threaded column 325 passes through the gas collection component fixing hole on backboard 111 112, internal thread cylinder 326 and rotary handle 327 are integral type structure, and internal thread cylinder 326 is matched somebody with somebody with the screw thread of rotary threaded column 325 Close.By adjusting rotary handle 327, can reduce before gas collection component between fixed disk 324 and internal thread cylinder 326 away from From, the effect for clamping backboard 111 is realized, and then gas collection component 3 can be locked in any angle, when gas collection component 3 collect density ratio air small gas when Open Side Down, and it is big that density ratio air is collected when gas collection 3 opening upwards of component Gas, to reach preferable experiment effect.

Further, as shown in Fig. 2 being provided with test tube storage circular groove 152 and beaker on the experiment equipment storage rack 151 Storage tank 153, the pedestal 121 are provided with and test tube storage circular groove 152 with test tube storage circular groove 152 corresponding position Quantity identical test tube storage bracket 123, described test tube storage bracket one end is connected with the pedestal 121 and the other end passes through institute At the home position for stating test tube storage circular groove 152, the pedestal 121 is set with the corresponding position of beaker storage tank 153 There is beaker fixing groove 124.

In an embodiment of the present invention, multiple test tube storage tanks 152 and a burning are provided with experiment equipment storage rack 151 Cup fixing groove 153, pedestal 121 are provided with and the test tube storage quantity phase of circular groove 152 with test tube storage circular groove 152 corresponding position Same test tube storage bracket 123, test tube can be inverted in test tube storage bracket 123, so that test tube residual liquid flows out.

Further, the fixing device includes vertical fixed plate 131, horizontal fixed plate 132 and triangular plate 133, a vertical end of fixed plate 131 is connected with an end of the horizontal fixed plate 132, and the triangle is consolidated 133 orthogonal two sides of fixed board respectively with the vertical fixed plate 131 and the vertical center of the horizontal fixed plate 132 It is connected at line position, the vertical fixed plate 131 and the horizontal fixed plate 132 are evenly equipped with fixation at the both ends of vertical centerline Nut 134.

Preferably, the vertical fixed plate 131, the horizontal fixed plate 132 and the one of the triangular plate 133 add Work is molded.

Further, the fixing device is 4, and the junction of the pedestal 121 and the backboard 111 is provided with four Fixed part, four fixed parts are respectively positioned at two ends of the front side of the backboard 111 and two ends of rear side, and described four Individual fixing device is coordinated so that four fixing devices are fixed on into described four by screw and the fixing nut 134 respectively Fixed part.

So, four fixing devices are respectively in two ends of the front side of backboard 111 and two ends of rear side by pedestal 121 It is fixed with backboard 111, further ensures the reliability that pedestal 121 and backboard 111 connect.

Preferably, the triangular plate（133）On be provided with lightening hole（135）, the lightening hole（135）For triangle Shape.

The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any Those skilled in the art, the equivalent variations made on the premise of the design of the present invention and principle is not departed from and modification, The scope of protection of the invention should be belonged to.

Claims

A kind of 1. bench for chemistry experiment, it is characterised in that：Including bearing assembly (1）, temperature measurement component（2）With gas collection assembly （3）, the bearing assembly includes pedestal（121）The pedestal is perpendicularly fixed at by fixing device（121）On backboard （111）, the backboard（111）Experiment equipment storage rack is provided with the right side of front end face（151）, the backboard（1）Left side set There is test tube fixed mount（141）, the test tube fixed mount（141）Right side be provided with gas storage test tube fixed mount（143）, The test tube fixed mount（141）With the gas storage test tube fixed mount（143）It is structure as a whole, the test tube fixed mount （141）On be provided with equally distributed test tube groove（142）, the gas storage test tube fixed mount（143）On be provided with uniformly point The gas storage cuvette groove of cloth（144）, the pedestal（121）On be provided with and the test tube groove（142）Corresponding cuvette groove （122）, the cuvette groove（122）Right side be provided with and the gas storage cuvette groove（144）Corresponding fixing groove（125）, institute State backboard（111）It is upper to be located at the test tube fixed mount（141）Surface be vertically arranged with and the test tube groove （142）The corresponding temperature measurement component gliding groove of quantity and position（115）, in the backboard（111）It is upper to be located at the thermometric group Part gliding groove（115）Top be provided with and the temperature measurement component gliding groove（115）Vertical temperature measurement component translation groove（114）, The temperature measurement component gliding groove（115）Groove is translated with the temperature measurement component（114）It is groove, the gas collection component（3） It is arranged at the backboard（111）Front end face on, the temperature measurement component（2）Including thermometer（211）With thermometer fixed mount （212）, the thermometer fixed mount（212）Leading portion be provided with through hole, be provided with thermometer fixed rubber ring in the through hole （213）, the thermometer（211）Through the thermometer fixed rubber ring（213）And with the thermometer fixed rubber ring（213）Cross It is full of cooperation, the thermometer fixed mount（212）Rear end be fixed with temperature measurement component fixed disk（214）, the temperature measurement component fixes Disk（214）Rear end be provided with sliding square（215）, the temperature measurement component fixed disk（214）Rear end face and the backboard （111）Front end face coordinate so that the sliding square（215）With the temperature measurement component gliding groove（115）Or the temperature measurement component Translate groove（114）It is slidably matched, the sliding square（215）Rear end be provided with threaded post（216）, the threaded post（216） Rear end and internal thread cylinder（217）Screw thread coordinates, the internal thread cylinder（217）Rear end be fixed with control crank（218）, The internal thread cylinder（217）With the temperature measurement component fixed disk（214）External diameter be more than the temperature measurement component gliding groove（115） Groove is translated with the temperature measurement component（114）Width；The gas collection component includes collecting pipe and collects tube fixing device, described The upper opening of collecting pipe is provided with taper plug, and the taper plug is provided with air admission hole and steam vent to connect air inlet respectively Pipe and blast pipe, described air inlet pipe one end is arranged at the collection bottom of the tube and the other end stretches out the taper plug with being connected glue Pipe connection is set, and the connection rubber tube is connected with the air induction conduit, and the air induction conduit passes through air inlet plug, the air inlet glue Fill in seal with the opening of the cylinder when the collecting pipe collects gas and coordinate, the leading portion for collecting tube fixing device is provided with Collecting pipe retainer plate, the leading portion of the collecting pipe retainer plate are provided with pretension opening, the collecting pipe and the collecting pipe retainer plate Assembling, the rear end for collecting tube fixing device are fixed with gas collection component fixed disk, the gas collection component fixed disk Rear end is provided with rotary threaded column, the rear end face of the gas collection component fixed disk coordinate with the front end face of the backboard so that The rotary threaded column is rotatably assorted with gas collection component fixing hole, the rotary threaded column rear end and internal thread rotor Screw thread coordinates, and the rear end of the internal thread rotor is fixed with rotary handle, in the backboard（111）It is upper to be located at the reality Test test tube fixed mount（141）With the experiment equipment storage rack（151）Between be provided with gas collection component fixing hole（112）, The gas collection component fixing hole（112）In the backboard（111）On level height be higher than the test tube fixed mount （141）With the experiment equipment storage rack（151）Height, the gas collection component（3）Including collecting pipe（311）And collection Tube fixing device（323）, the collecting pipe（311）Upper opening be provided with taper plug（312）, the taper plug（312） Air admission hole and steam vent are provided with to connect air inlet pipe respectively（314）And blast pipe（313）, the air inlet pipe（314）One end is set It is placed in the collecting pipe（311）Bottom and the other end stretching taper plug（312）With connection rubber tube（315）Connection is set, The connection rubber tube（315）With the air induction conduit（316）Connection, the air induction conduit（316）Through air inlet plug（317）, The air inlet plug（317）In the collecting pipe（311）Collect gas when with the cylinder（318）Opening sealing coordinate, The collection tube fixing device（323）Leading portion be provided with collecting pipe retainer plate（321）, the collecting pipe retainer plate（321）Leading portion Provided with pretension opening（322）, the collecting pipe（311）With the collecting pipe retainer plate（321）Assembling, the collection tube fixing device （323）Rear end be fixed with gas collection component fixed disk（324）, the gas collection component fixed disk（324）Rear end set It is equipped with rotary threaded column（325）, the gas collection component fixed disk（324）Rear end face and the backboard（111）Front end Face coordinates so that the rotary threaded column（325）With gas collection component fixing hole（112）It is rotatably assorted, the rotary threaded column （325）Rear end and internal thread rotor（326）Screw thread coordinates, the internal thread rotor（326）Rear end be fixed with rotation Change hands handle（327）, the internal thread rotor（326）With gas collection assembly fixed disk（324）External diameter be more than the gas Body collection assembly fixing hole（112）Diameter.