CN112391268A - Biogas collecting device for laboratory - Google Patents
Biogas collecting device for laboratory Download PDFInfo
- Publication number
- CN112391268A CN112391268A CN202011167476.6A CN202011167476A CN112391268A CN 112391268 A CN112391268 A CN 112391268A CN 202011167476 A CN202011167476 A CN 202011167476A CN 112391268 A CN112391268 A CN 112391268A
- Authority
- CN
- China
- Prior art keywords
- water tank
- gas collecting
- gas
- collecting bottle
- travel switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 108
- 230000005484 gravity Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/48—Automatic or computerized control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Sustainable Development (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Analytical Chemistry (AREA)
- Computer Hardware Design (AREA)
- Clinical Laboratory Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a biogas collecting device for a laboratory, which comprises a peristaltic pump, a pulley block, a pressure device, a gas collecting device and a plurality of water tanks, wherein the pulley block is arranged on the top of the peristaltic pump; the water tank comprises a first water tank, a second water tank and a gas collecting water tank; the first water tank and the second water tank are respectively communicated with the peristaltic pump through hoses; one end of a connecting rope is fixedly connected to the top of the second water tank, and the connecting rope is connected with the gas collecting device through a pulley block; the gas collecting device comprises a gas collecting bottle and a gas collecting bag; the gas collecting bottle is buckled in the gas collecting water tank; the pressure device is arranged at the top of the gas collecting bottle; the gas collecting bottle is communicated with the gas collecting bag through a hose. The device prevents gas overflow caused by too high gas collection speed through one circulation in the gas collection process; and the air pressure in the air collecting bottle is adjusted through the arrangement of the water tank, so that the labor and the vigor of experimenters are saved, and the experimental efficiency and the accuracy of experimental data are improved.
Description
Technical Field
The invention relates to the technical field of laboratory collection, in particular to a biogas collection device for a laboratory.
Background
At present, in laboratories of various colleges and universities or research institutes, during the process of carrying out biogas fermentation experiments, the gas collection method adopted is mostly gas collection by a drainage method, that is, biogas generated in a reaction device enters a gas collection bottle, water in the gas collection bottle is drained into the water collection bottle, and the volume of the water in the water collection bottle is read to obtain the amount of the generated biogas. This method is simple and easy to operate, but has some problems: firstly, the volume of the gas collecting bottle is very limited, and the gas collecting bottle is often full in the experimental process, so that the experimenter needs to read frequently to observe whether the gas collecting bottle is full of gas at any time, a large amount of manpower and energy are consumed, and the experimental efficiency is low; secondly, in the drainage gas collection process, the volume of the collected gas needs to be judged by the volume of the gas discharged liquid, so that the accuracy is ensured only when the gas pressure in the gas collection bottle is consistent with the atmospheric pressure, and the gravity of the gas collection bottle can influence the gas pressure in the gas collection bottle; thirdly, the liquid has pressure effect on the object immersed in the liquid, and the surface tension of the liquid and the contact surface of the bottom of the gas collecting bottle generate great acting force in the initial state, and the part is ignored in the process of collecting gas by the conventional drainage method, so that inaccurate data is caused. Therefore, it is necessary to develop a biogas collecting device with high efficiency and accurate precision.
Disclosure of Invention
The invention aims to provide a biogas collecting device for a laboratory, which aims to solve the problems in the prior art and solve and optimize the problems of low efficiency and inaccurate data of the device.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a biogas collecting device for a laboratory, which comprises a peristaltic pump, a pulley block, a pressure device, a gas collecting device and a plurality of water tanks, wherein the pulley block is arranged on the top of the peristaltic pump; the water tank comprises a first water tank, a second water tank and a gas collecting water tank; the first water tank and the second water tank are respectively communicated with the peristaltic pump through hoses; one end of a connecting rope is fixedly connected to the top of the second water tank, and the connecting rope is connected with the gas collecting device through the pulley block;
the gas collecting device comprises a gas collecting bottle and a gas collecting bag; the gas collecting bottle is buckled in the gas collecting water tank; the pressure device is arranged at the top of the gas collecting bottle; the gas collecting bottle is communicated with the gas collecting bag.
Preferably, the total gravity of the second water tank can balance the gravity of the gas collecting bottle and the acting force of water on the gas collecting bottle, so that the pressure in the gas collecting bottle is consistent with the external atmospheric pressure, and the accuracy of gas volume data is guaranteed.
The first water tank is a square open water tank; the second water tank is a light square water tank; the gas collection water tank is a cylindrical water tank; the gas collecting bottle is of a cylindrical structure, and an opening of the gas collecting bottle is downward and is abutted with the gas collecting water tank; the gas collecting bottle is matched with the gas collecting water tank in size.
The top surface of the gas collecting bottle is also provided with a combustion port; an electric switch is arranged on the side wall of the gas collecting bottle; one side of the electric switch is respectively communicated with an air inlet pipe and an air outlet pipe, and the other side of the electric switch is communicated with the inner cavity of the air collecting bottle; the air outlet pipe is communicated with the air collecting bag, and the air inlet pipe is communicated with the outside.
Preferably, the combustion port can be opened if the gas needs to be ignited to judge the components generating the biogas in the experimental process; and the air inlet pipe and the air outlet pipe both adopt flexible pipes.
A first travel switch contact and a second travel switch contact are respectively arranged at the top and the bottom in the gas collection water tank; the bottom of the outer wall of the gas collecting bottle is fixedly provided with a travel switch contact; the travel switch contact is defined between the first and second travel switch contacts; and the first travel switch contact is arranged below the electric switch.
The electric switch is a two-position three-way electromagnetic valve.
The pressure device is also provided with a counter.
Preferably, the number of activations of the pressure device is recorded by a counter.
The pulley block comprises a first fixed pulley and a second fixed pulley; the first fixed pulley and the second fixed pulley are parallel and level in the horizontal direction and are provided with wire grooves for threading of the connecting rope; and the first fixed pulley is arranged right above the second water tank, and the second fixed pulley is arranged right above the gas collecting bottle.
A plc controller is also provided; the second travel switch contact is connected to the plc controller common point COM and input terminal 0000, the first travel switch contact is connected to the plc controller common point COM and input terminal 0001; the contactor KM1 of the pressure device, the contactor KM2 of the electric switch and the contactor KM3 of the peristaltic pump are connected with the output terminals 1000, 1001, 1002 and 1003 of the plc controller respectively.
The invention discloses the following technical effects: a cycle exists in the gas collection process, when the gas collection bottle is full of gas, the gas can be transferred into the gas collection bag and counted through the counter, and therefore experimenters do not need to worry about the situation that gas overflows due to the fact that the gas collection speed is too high. The left water tank also adjusts the air pressure in the air collecting bottle to enable the pressure intensity to be the same as the atmospheric pressure intensity, and therefore the obtained experimental data are more accurate. The labor and the energy of experimenters are saved, and the experimental efficiency and the accuracy of experimental data are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a PLC controller wiring diagram.
Fig. 3 is a diagram showing the operation state of the electric switch.
FIG. 4 is a schematic view of a buffering device according to an embodiment of the present invention.
The device comprises a peristaltic pump 1, a first water tank 2, a second water tank 3, a pressure device 4, a gas collecting bottle 5, a water tank 6, a gas collecting bag 7, a PLC 8, a hose 9, a counter 10, a connecting rope 11, a first fixed pulley 12, a second fixed pulley 13, a burner 14, an electric switch 15, a first travel switch contact 16, a second travel switch contact 17, a travel switch contact 18, an air inlet 19 and an air outlet 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a biogas collecting device for a laboratory, which comprises a peristaltic pump 1, a pulley block, a pressure device 4, a gas collecting device and a plurality of water tanks, wherein the pulley block is arranged on the top of the peristaltic pump; the water tanks comprise a first water tank 2, a second water tank 3 and a gas collecting water tank 6; the first water tank 2 and the second water tank 3 are respectively communicated with the peristaltic pump 1 through hoses 9; one end of a connecting rope 11 is fixedly connected to the top of the second water tank 3, and the connecting rope 11 is connected with the gas collecting device through a pulley block;
the gas collecting device comprises a gas collecting bottle 5 and a gas collecting bag 7; the gas collecting bottle 5 is buckled in the gas collecting water tank 6; the pressure device 4 is arranged at the top of the gas collecting bottle 5; the gas collecting bottle 5 is communicated with a gas collecting bag 7.
The first water tank 2 is a square open water tank; the second water tank 3 is a light square water tank; the gas-collecting water tank 6 is a cylindrical water tank; the gas collecting bottle 5 is of a cylindrical structure, and an opening of the gas collecting bottle is downward and is abutted with the gas collecting water tank 6; the gas collecting bottle 5 is matched with the gas collecting water tank 6 in size.
The top surface of the gas collecting bottle 5 is also provided with a combustion port 14; the side wall of the gas collecting bottle 5 is provided with an electric switch 15; one side of the electric switch 15 is respectively communicated with an air inlet pipe 19 and an air outlet pipe 20, and the other side is communicated with the inner cavity of the air collecting bottle 5; the air outlet pipe 20 is communicated with the air collecting bag 7, and the air inlet pipe 19 is communicated with the outside.
A first travel switch contact 16 and a second travel switch contact 17 are respectively arranged at the top and the bottom in the gas collection water tank 6; the bottom of the outer wall of the gas collecting bottle 5 is fixedly provided with a travel switch contact 18; a travel switch contact 18 is defined between the first travel switch contact 16 and the second travel switch contact 17; and the first travel switch contact 16 is disposed below the electric switch 15.
The electric switch 15 is a two-position three-way electromagnetic valve.
A counter 10 is also provided on the pressure device 4.
The pulley block comprises a first fixed pulley 12 and a second fixed pulley 13; the first fixed pulley 12 and the second fixed pulley 13 are parallel and level in the horizontal direction and are provided with wire grooves for connecting the threading of the rope 11; and the first fixed pulley 12 is arranged right above the second water tank 3, and the second fixed pulley 13 is arranged right above the gas collecting bottle 5.
A plc controller 8 is also provided; the second travel switch contact 17 is connected to the common point COM of the plc controller 8 and to the input terminal 0000, and the first travel switch contact 16 is connected to the common point COM of the plc controller 8 and to the input terminal 0001; the contactor KM1 of the pressure device 4, the contactor KM2 of the electric switch 15 and the contactor KM3 of the peristaltic pump 1, and the contactors of the counter 10 are connected to the output terminals 1000, 1001, 1002 and 1003 of the plc controller 8, respectively.
In one embodiment of the present invention, as shown in fig. 1, the working process is as follows: in the initial state, a proper amount of water is contained in the gas-collecting water tank 6 and the first water tank 2, the travel switch contact 18 is contacted with the first travel switch contact 16, at the moment, the electric switch 15 enables the reaction gas inlet 19 to be in an open state, and the gas outlet 20 is in a closed state; along with the reaction device generates biogas, the gas collecting bottle 5 can gradually rise, the travel switch contact 18 also rises at the moment, meanwhile, the PLC 8 can control the peristaltic pump 1 to inject water into the second water tank 3, the total gravity of the second water tank 3 can balance the gravity of the gas collecting bottle 5 on the right side and the acting force of the water on the gas collecting bottle 5, and therefore the pressure in the gas collecting bottle 5 is consistent with the external atmospheric pressure, and the accuracy of gas volume data is guaranteed.
When the gas in the gas collecting bottle 5 gradually changes, the travel switch contact 18 contacts the second travel switch contact 17, at this time, the PLC 8 controls the electric switch 15 to close the gas inlet 19, the gas outlet 20 is opened, meanwhile, the pressure device 4 starts to start, the gas collecting bottle 5 is pressed downwards, the gas in the gas collecting bottle 5 enters the gas collecting bag 7 through the hose 9, the pressure device 4 stops working when the travel switch contact 18 contacts the travel switch contact 16, the PLC 8 controls the electric switch 15 to open the gas inlet 19 and close the gas outlet 20, the counter 10 is connected with the pressure device 4 to record the starting times of the pressure device, and the process is repeated. The burner ports 14 may be opened if ignition of the gas is required during the experiment to determine the composition of the biogas being produced.
In another embodiment of the present invention, as shown in fig. 2, the PLC controller is of the OMRON brand CPM2A-10CDR-D model, the second travel switch contact 17 is connected to the common point COM and input terminal 0000 of PLC controller 8, and the first travel switch contact 16 is connected to the common point COM and input terminal 0001 of PLC controller 8; the contactor KM1 of the pressure device 4, the contactor KM2 of the electric switch 15 and the contactor KM3 of the peristaltic pump 1, and the contactors of the counter 10 are connected to the output terminals 1000, 1001, 1002 and 1003 of the plc controller 8, respectively.
In another embodiment of the present invention, as shown in fig. 3, the electric switch 15 is a two-position three-way electromagnetic valve, the right opening of the electromagnetic valve is connected to the gas collecting bottle 5, the travel switch contact 18 contacts the second travel switch contact 17, at this time, the PLC controller 8 will control the electromagnetic valve to be powered off, the valve core is in the state shown in the figure, the gas inlet 19 is closed, the gas outlet 20 is opened, and at the same time, the pressure device 4 will start to press the gas collecting bottle 5 downward, and the gas in the gas collecting bottle 5 enters the gas collecting bag 7 through the hose 21; when the travel switch contact 18 contacts with the first travel switch contact 16, the pressure device 4 stops working, the PLC 8 controls the electromagnetic valve to electrify the electromagnetic valve, the valve core moves downwards, the air inlet 19 is opened, the air outlet 20 is closed, the counter 22 is connected with the pressure device 4, the starting times of the pressure device are recorded, and the operation is repeated.
In another embodiment of the present invention, the pressure device 4 is a pressure pump, and a pressure gauge is further disposed on the pressure pump; and a shockproof silica gel layer is arranged on the contact surface of the pressure device 4 and the top of the gas collecting bottle 5.
In a further embodiment of the present invention, as shown in fig. 4, at least two sets of buffer devices are further disposed on the bottom side of the pressure device 4 to prevent the pressure device 4 from damaging the gas collecting bottle due to excessive impact force when descending; the buffer device comprises a guide sleeve, a guide rod, a buffer plate, a connecting rod, a pulley, a spring, a telescopic rod and a bottom plate, wherein the bottom plate is arranged on the bottom surface of the pressure device 4, the guide sleeve is fixedly arranged on the bottom plate and is of a cavity structure, one end of the guide rod extends out of the guide sleeve, the other end of the guide rod extends into the guide sleeve and is connected with the bottom plate through the telescopic rod, the spring is wrapped outside the telescopic rod, the connecting rod is vertically arranged at the bottom of the guide rod, one end of the connecting rod is connected with the pulley, a sliding groove for the pulley to slide is formed in the inner wall of the guide sleeve, and the buffer plate is fixedly;
two buffer pass through buffer beam horizontal connection, guarantee two buffer's work synchronization, also improved the stability and the buffering effect of device when improving work efficiency.
The invention has the beneficial effects that: a cycle exists in the gas collection process, when the gas collection bottle is full of gas, the gas can be transferred into the gas collection bag and counted through the counter, and therefore experimenters do not need to worry about the situation that gas overflows due to the fact that the gas collection speed is too high. The left water tank also adjusts the air pressure in the air collecting bottle to enable the pressure intensity to be the same as the atmospheric pressure intensity, and therefore the obtained experimental data are more accurate. The labor and the energy of experimenters are saved, and the experimental efficiency and the accuracy of experimental data are improved.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. The utility model provides a biogas collection device is used in laboratory which characterized in that includes: the device comprises a peristaltic pump (1), a pulley block, a pressure device (4), a gas collecting device and a plurality of water tanks; the water tanks comprise a first water tank (2), a second water tank (3) and a gas collection water tank (6); the first water tank (2) and the second water tank (3) are respectively communicated with the peristaltic pump (1) through hoses (9); one end of a connecting rope (11) is fixedly connected to the top of the second water tank (3), and the connecting rope (11) is connected with the gas collecting device through the pulley block;
the gas collection device comprises a gas collection bottle (5) and a gas collection bag (7); the gas collecting bottle (5) is buckled in the gas collecting water tank (6); the pressure device (4) is arranged at the top of the gas collecting bottle (5); the gas collecting bottle (5) is communicated with the gas collecting bag (7).
2. The laboratory biogas collection apparatus of claim 1, wherein: the first water tank (2) is a square open water tank; the second water tank (3) is a light square water tank; the gas collection water tank (6) is a cylindrical water tank; the gas collecting bottle (5) is of a cylindrical structure, and an opening of the gas collecting bottle is downward and is abutted with the gas collecting water tank (6); the gas collecting bottle (5) is matched with the gas collecting water tank (6) in size.
3. The laboratory biogas collection apparatus of claim 1, wherein: the top surface of the gas collecting bottle (5) is also provided with a combustion port (14); an electric switch (15) is arranged on the side wall of the gas collecting bottle (5); one side of the electric switch (15) is respectively communicated with an air inlet pipe (19) and an air outlet pipe (20), and the other side is communicated with the inner cavity of the gas collecting bottle (5); the air outlet pipe (20) is communicated with the air collecting bag (7), and the air inlet pipe (19) is communicated with the outside.
4. The laboratory biogas collection apparatus of claim 3, wherein: a first travel switch contact (16) and a second travel switch contact (17) are respectively arranged at the top and the bottom in the gas collection water tank (6); a travel switch contact (18) is fixedly arranged at the bottom of the outer wall of the gas collecting bottle (5); the travel switch contact (18) being defined between the first travel switch contact (16) and the second travel switch contact (17); and the first travel switch contact (16) is arranged below the electric switch (15).
5. The laboratory biogas collection apparatus of claim 3, wherein: the electric switch (15) is a two-position three-way electromagnetic valve.
6. The laboratory biogas collection apparatus of claim 4, wherein: the pressure device (4) is also provided with a counter (10).
7. The laboratory biogas collection apparatus of claim 1, wherein: the pulley block comprises a first fixed pulley (12) and a second fixed pulley (13); the first fixed pulley (12) and the second fixed pulley (13) are parallel and level in the horizontal direction and are provided with wire grooves for threading of the connecting rope (11); and the first fixed pulley (12) is arranged right above the second water tank (3), and the second fixed pulley (13) is arranged right above the gas collecting bottle (5).
8. The laboratory biogas collection apparatus of claim 6, wherein: a plc controller (8) is also provided; the second travel switch contact (17) is connected to the common point COM and to the input terminal 0000 of the plc controller (8), and the first travel switch contact (16) is connected to the common point COM and to the input terminal 0001 of the plc controller (8); the contactor KM1 of the pressure device (4), the contactor KM2 of the electric switch (15) and the contactor KM3 of the peristaltic pump (1), and the contactors of the counter (10) are respectively connected with the output terminals 1000, 1001, 1002 and 1003 of the plc controller (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011167476.6A CN112391268A (en) | 2020-10-28 | 2020-10-28 | Biogas collecting device for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011167476.6A CN112391268A (en) | 2020-10-28 | 2020-10-28 | Biogas collecting device for laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112391268A true CN112391268A (en) | 2021-02-23 |
Family
ID=74597979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011167476.6A Withdrawn CN112391268A (en) | 2020-10-28 | 2020-10-28 | Biogas collecting device for laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112391268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324867A (en) * | 2021-06-04 | 2021-08-31 | 邓燕龙 | Natural gas moisture detection device |
-
2020
- 2020-10-28 CN CN202011167476.6A patent/CN112391268A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324867A (en) * | 2021-06-04 | 2021-08-31 | 邓燕龙 | Natural gas moisture detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112391268A (en) | Biogas collecting device for laboratory | |
| CN213866186U (en) | Biogas collecting device for laboratory | |
| CN209858562U (en) | Dry-wet cycle test box for rock test piece | |
| CN103515570B (en) | A kind of square battery liquid injection machine | |
| CN205684068U (en) | Electric up-down burette stand with illuminator | |
| CN112067775A (en) | Environment-friendly water quality fixed point monitoring appearance | |
| CN209281706U (en) | A kind of portable physics teaching laboratory apparatus | |
| CN214297513U (en) | Liquid metering tank for polyolefin elastomer production | |
| CN217261550U (en) | Auxiliary detection device of nucleic acid detection kit | |
| CN213840441U (en) | Automatic control maintenance device for electromechanical equipment | |
| CN201993664U (en) | Automatic regulating device of laboratory | |
| CN220961391U (en) | Multichannel industrial chromatograph | |
| CN209334080U (en) | Immersion cell | |
| CN208736715U (en) | A kind of chemical analysis detection sampler | |
| CN208580007U (en) | A kind of Density Detection equipment | |
| CN207502233U (en) | A kind of automatic telescopic chemical industry measurement sampling equipment | |
| CN206661247U (en) | A kind of convenient pipette | |
| CN219694618U (en) | Water sampling device for hydraulic engineering | |
| CN201040713Y (en) | Device for containing liquid | |
| CN216233147U (en) | Silicon sealant filling and tail sealing machine capable of achieving accurate filling | |
| CN220356569U (en) | Portable water pressure detects instrument | |
| CN216420010U (en) | Automatic quantitative indexing dispensing valve of automatic dispensing machine | |
| CN217016625U (en) | Sodium and water reaction device for chemical experiment | |
| CN216063164U (en) | Accurate proportion of waterborne nanometer pigment is taken and is added device | |
| CN113926508B (en) | Teaching experiment platform special for education informatization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210223 |
|
| WW01 | Invention patent application withdrawn after publication |