CN209735314U - acid-base washing system and fume hood with same - Google Patents
acid-base washing system and fume hood with same Download PDFInfo
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- CN209735314U CN209735314U CN201920300068.XU CN201920300068U CN209735314U CN 209735314 U CN209735314 U CN 209735314U CN 201920300068 U CN201920300068 U CN 201920300068U CN 209735314 U CN209735314 U CN 209735314U
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Abstract
The utility model discloses an acid-base washing system and have fume chamber of this system relates to laboratory paraphernalia technical field. The acid-base washing system comprises an acid-base gas collecting device and a neutralizing device positioned below the acid-base gas collecting device, the acid-base gas collecting device comprises a shell, an air inlet is formed in the lower portion of the shell, a water separating layer, a spraying mechanism positioned above the water separating layer and an air outlet positioned above the spraying mechanism are arranged above the air inlet in the shell, and a first water outlet is formed in the bottom of the shell; the neutralizing device comprises a neutralizing water tank connected with the first water discharging port, a circulating pump and an automatic dosing instrument, wherein the circulating pump and the automatic dosing instrument are respectively connected with the neutralizing water tank, the output end of the circulating pump is connected with the spraying mechanism through a water supply pipe, and a second water discharging port is formed in the bottom of the neutralizing water tank. The utility model discloses environmental protection, energy-conservation, high-efficient, low cost.
Description
Technical Field
The utility model relates to a laboratory paraphernalia technical field, concretely relates to acid-base washing system and have fume chamber of this system.
Background
The fume chamber is the most important safety device in modern laboratory, and it guarantees through exhaust system sufficient negative pressure in the fume chamber, guarantees that laboratory staff and experimental environment do not receive the pollution of chemical, and along with the development of human science and technology, the kind that people carry out the chemistry experiment increases greatly in quantity, and the chemical of many experiments is poisonous and harmful, does not just discharge in the atmosphere through handling many times, has caused the pollution that can not neglect to air, soil, water resource. Therefore, environmentally friendly equipment is required to treat the contaminants generated by these chemical experiments. The volume of the common processing equipment is large, the price is correspondingly high, the later maintenance is complex, so that a small laboratory cannot bear the high cost, and the environmental pollution is caused.
SUMMERY OF THE UTILITY MODEL
the utility model provides an environmental protection, energy-conservation, high-efficient, low-cost be used for acid-base washing system in laboratory and have fume chamber of this system.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
an acid-base scrubbing system comprising an acid-base gas collection device and a neutralization device located below the acid-base gas collection device, wherein:
The acid-base gas collecting device comprises a shell, wherein a gas inlet is formed in the lower part of the shell, a water separating layer, a spraying mechanism and a gas outlet are arranged in the shell, the water separating layer is arranged above the gas inlet, the spraying mechanism is arranged above the water separating layer, the gas outlet is arranged above the spraying mechanism, and a first water outlet is formed in the bottom of the shell;
The neutralizing device comprises a neutralizing water tank connected with the first water discharging port, a circulating pump and an automatic dosing instrument, wherein the circulating pump and the automatic dosing instrument are respectively connected with the neutralizing water tank, the output end of the circulating pump is connected with the spraying mechanism through a water supply pipe, and a second water discharging port is formed in the bottom of the neutralizing water tank.
furthermore, the water diversion layer comprises filter cotton and a plurality of water diversion balls arranged above the filter cotton, the water diversion balls are oval hollow balls, and a plurality of water diversion belts are arranged in the radial direction and the axial direction of the water diversion balls.
Further, the spraying mechanism comprises a main pipeline connected with the water supply pipe and a plurality of nozzles arranged on the main pipeline.
Further, the nozzle is an atomizing nozzle with a spraying angle of 60-130 degrees.
Furthermore, a defogging layer is arranged between the spraying mechanism and the exhaust port in the shell, and the defogging layer is a wire mesh made of a non-metallic material.
Furthermore, a boss protruding towards the inside of the shell is arranged at the bottom of the shell, the air inlet is arranged on the boss, a guide plate is arranged inside the shell, and the guide plate is positioned between the air inlet and the water diversion layer;
Alternatively, the air inlet is disposed on a sidewall of the housing.
Further, the automatic medicine adding instrument comprises a first storage tank for storing an acidic reagent and a second storage tank for storing an alkaline reagent, and the first storage tank and the second storage tank are respectively connected with the neutralization water tank through electromagnetic valves.
Furthermore, a first liquid level sensor and a second liquid level sensor are respectively arranged in the first storage tank and the second storage tank, and a PH sensor and a third liquid level sensor are arranged in the neutralization water tank.
The utility model provides a fume chamber, includes the cabinet body and air exit, still includes above-mentioned arbitrary acid-base washing system, the air exit is connected with the air inlet.
Further, the bottom of the cabinet body is provided with a storage cabinet, the acid-base shell is arranged at the top of the cabinet body, and the neutralization device is arranged in the storage cabinet.
Compared with the prior art, the utility model discloses following beneficial effect has:
The acid-base washing system and the fume hood with the same of the utility model are provided with the acid-base gas collecting device and the neutralizing device which are matched with the laboratory equipment box, the acid-base gas collecting device dissolves acid-base components in gas discharged by the laboratory equipment into water through the water separating layer and the spraying mechanism, the gas is filtered, and the filtered gas is discharged through the gas outlet; acid-base composition dissolved in water forms water drops to flow into the neutralizing water tank of the neutralizing device, and neutralization reaction is carried out in the neutralizing water tank, and then the wastewater meeting the discharge standard is discharged out of the neutralizing water tank, so that the cost is reduced, the treated gas and the discharged wastewater both meet the environmental protection requirement, and the environment protection is facilitated. The discharged waste water can be recycled, and resources are saved.
drawings
Fig. 1 is a schematic structural diagram of an acid-base washing system according to the present invention;
Fig. 2 is a schematic structural diagram of an acid-base gas collecting device in the acid-base washing system of the present invention;
FIG. 3 is a schematic structural diagram of a neutralization device in the acid-base washing system according to the present invention;
FIG. 4 is a cross-sectional view of a neutralization device in the acid-base washing system of the present invention;
FIG. 5 is a schematic structural view of a water dividing ball in the acid-base washing system of the present invention;
FIG. 6 is a schematic structural view of the acid-base washing system of the present invention in an integrated configuration;
Fig. 7 is a schematic structural diagram of the fume hood of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In one aspect, the present invention provides an acid-base washing system, as shown in fig. 1 to 6, including an acid-base gas collecting device 1 and a neutralizing device 2 located below the acid-base gas collecting device 1, wherein:
the acid-base gas collecting device 1 comprises a shell 1-1, wherein the lower part of the shell 1-1 is provided with a gas inlet 1-4, a water separating layer 1-2, a spraying mechanism 1-8 and a gas outlet 1-10 are arranged in the shell 1-1 and positioned above the gas inlet 1-4, the spraying mechanism 1-2 is positioned above the water separating layer 1-2, the gas outlet 1-10 is positioned above the spraying mechanism 1-8, and the bottom of the shell 1-1 is provided with a first water outlet 1-7;
the neutralizing device 2 comprises a neutralizing water tank 2-1 connected with a first water discharge port 1-7, a circulating pump 2-3 and an automatic dosing instrument 2-6, wherein the circulating pump 2-3 and the automatic dosing instrument are respectively connected with the neutralizing water tank 2-1, the output end of the circulating pump 2-3 is connected with a spraying mechanism 1-8 through a water supply pipe 2-5, and a second water discharge port 2-2 is arranged at the bottom of the neutralizing water tank 2-1.
The working principle of the acid-base washing system of the utility model is as follows:
When the acid-base washing system is used, acid-base gas generated by laboratory equipment in the experimental process enters the shell 1-1 through the air inlet 1-4 and flows upwards, arrows in figure 2 indicate the flowing direction of air flow, water in the neutralizing water tank 2-1 is sprayed downwards through the spraying mechanism 1-8 under the driving action of the circulating pump 2-3, formed water mist is fully contacted with the acid-base gas which flows upwards in the water diversion layer 1-2, a large amount of acid-base gas is dissolved in the water mist to form water beads and flows into the neutralizing water tank 2-1 through the first water outlet 1-7, the automatic medicine adding instrument 2-6 adds a proper amount of reagent or liquid medicine to the neutralizing water tank 2-1 according to the pH value of the water in the neutralizing water tank 2-1 to neutralize the acid-base components in the water tank 2-1, the neutralized water is discharged out of the neutralizing water tank 2-1 through the second water discharge port 2-2, and can be recycled. And the treated gas is exhausted through exhaust ports 1-10.
The acid-base washing system and the fume hood with the same dissolve acid-base components in gas discharged by laboratory equipment into water through the water separating layer and the spraying mechanism by arranging the acid-base gas collecting device and the neutralizing device matched with the laboratory equipment box, filter the gas, and discharge the filtered gas through the exhaust port; acid-base composition dissolved in water forms water drops to flow into the neutralizing water tank of the neutralizing device, and neutralization reaction is carried out in the neutralizing water tank, and then the wastewater meeting the discharge standard is discharged out of the neutralizing water tank, so that the cost is reduced, the treated gas and the discharged wastewater both meet the environmental protection requirement, and the environment protection is facilitated. The discharged waste water can be recycled, and resources are saved.
The acid-base washing system of the utility model can be used for the experiments of strong acid-base like hydrochloric acid, nitric acid, hydrofluoric acid and the like and the organic chemical substances which are easy to dissolve in water, and has wide application.
In an embodiment of the present invention, the water diversion layer 1-2 preferably includes filter cotton 1-2-2 and a plurality of water diversion balls 1-2-1 disposed above the filter cotton 1-2-2, as shown in fig. 5, the water diversion ball 1-2-1 is an elliptical hollow ball, and a plurality of water diversion strips 1-2-1-1 are disposed in the radial and axial directions of the water diversion ball 1-2-1. The filter cotton 1-2-2 can adopt fiber filter cotton, non-woven fabric filter cotton or active carbon filter cotton, and has large specific surface area and high gas purification efficiency. The water distributing ball 1-2-1 can be made of PP materials with strong corrosion resistance, and the water distributing belt 1-2-1-1 arranged in the radial direction and the axial direction improves the adsorption area of water mist on acid and alkali gases, increases the adsorption time and improves the purification rate of the acid and alkali gases.
Further, the shower mechanism 1-8 preferably includes a main pipe 1-8-1 connected to the water supply pipe 2-5 and a plurality of nozzles 1-8-2 provided on the main pipe 1-8-1. The circulating pump 2-3 sends the water in the neutralizing water tank 2-1 to the main pipeline 1-8-1 and sprays downwards through the nozzle 1-8-2 on the main pipeline 1-8-1, and the sprayed water mist and the acid-base gas form countercurrent exchange so that the acid-base gas is dissolved in the water. The number of nozzles 1-8-2 can be determined and arranged according to the size of the housing 1-1 to ensure that the spraying mechanism 1-8 can spray the whole housing 1-1.
in the embodiment of the utility model, the spray nozzle 1-8-2 can adopt the atomizing nozzle 1-8-2 with the spray angle of 60-130 degrees to ensure the spraying effect of the spraying mechanism 1-8.
In order to reduce the corrosion degree of acid and alkali gases to the spraying mechanisms 1-8 and prolong the service life of the spraying mechanisms 1-8, main pipelines 1-8-1 and nozzles 1-8-2 in the spraying mechanisms 1-8 are preferably made of PP materials with strong corrosion resistance.
In addition, after the gas fully contacts with the water mist, most of acid and alkali gas dissolved in water forms water drops to flow into the bottom of the shell 1-1 and flow into the neutralizing water tank 2-1 through the first water outlet 1-7 for neutralization, but a small amount of acid and alkali gas dissolved in water cannot form water drops and is discharged through the air outlet 1-10. In order to further purify acid and alkali gases and reduce the influence of exhausted gases on the environment, a defogging layer 1-9 is preferably arranged between the spraying mechanism 1-8 and the exhaust port 1-10 in the shell 1-1, and the defogging layer 1-9 can be a wire mesh made of a non-metallic material.
Preferably, the air inlet 1-4 of the housing 1-1 can be arranged at the bottom of the housing 1-1, or can be arranged on the side wall of the housing 1-1, and can be set according to the position of an air outlet of laboratory equipment.
when the air inlet 1-4 is arranged at the bottom of the shell 1-1, water drops formed after acid and alkali gas is dissolved in water can flow into the bottom of the shell 1-1 and flow out through the first water outlet 1-7, in order to prevent the water drops from flowing into the air inlet 1-4 and further entering laboratory equipment to influence the work of the laboratory equipment, a boss 1-5 protruding towards the inside of the shell 1-1 can be arranged at the bottom of the shell 1-1, the air inlet 1-4 is arranged on the boss 1-5, the upper end part of the air inlet 1-4 is higher than the bottom of the shell 1-1, meanwhile, a guide plate 1-3 is arranged inside the shell 1-1, and the guide plate 1-3 is positioned between the air inlet 1-4 and the water separation layer 1-2. The water drops dropping from the water diversion layer 1-2 can flow into the bottom of the shell 1-1 from the side of the shell 1-1 under the flow guiding effect of the flow guiding plate 1-3 and can not flow into the air inlet 1-4.
Further, the automatic medicine adding instrument 2-6 preferably includes a first storage tank 2-6-1 for storing an acidic reagent or a medical liquid and a second storage tank 2-6-2 for storing an alkaline reagent or a medical liquid, and the first storage tank 2-6-1 and the second storage tank 2-6-2 are connected to the neutralization water tank 2-1 through solenoid valves 2-11, respectively. The first storage tank 2-6-1 and the second storage tank 2-6-2 can respectively add corresponding acidic reagent or liquid medicine and alkaline reagent or liquid medicine into the neutralization water tank 2-1 under the control of the electromagnetic valve 2-11.
when the liquid in the neutralization water tank 2-1 is neutralized, the automatic medicine adding instrument 2-6 can add corresponding reagents or liquid medicines into the neutralization water tank 2-1 according to the PH value of the liquid in the neutralization water tank 2-1 for neutralization reaction, therefore, a PH sensor 2-7 can be arranged in the neutralization water tank 2-1, and when the PH value of the liquid in the neutralization water tank 2-1 detected by the PH sensor 2-7 is more than 7, the automatic medicine adding instrument 2-6 automatically adds acidic reagents or liquid medicines into the neutralization water tank 2-1 for neutralization reaction; when the PH value of the liquid in the neutralizing water tank 2-1 is detected to be less than 7 by the PH sensor 2-7, the automatic medicine adding instrument 2-6 automatically adds alkaline reagent or liquid medicine into the neutralizing water tank 2-1 for neutralization reaction, and finally ensures that the discharged wastewater is wastewater meeting the discharge standard.
In addition, the first and second storage tanks 2-6-1 and 2-6-2 are preferably provided with first and second liquid level sensors 2-12 and 2-13, respectively, for detecting liquid level changes in the first and second storage tanks 2-6-1 and 2-6-2.
preferably, a third liquid level sensor 2-10 can be further arranged in the neutralizing water tank 2-1, a water inlet 2-7 is arranged on one side of the neutralizing water tank 2-1, a water inlet electromagnetic valve 2-8 is arranged at the position of the water inlet 2-7, when neutralized liquid is discharged from the neutralizing water tank 2-1, the third liquid level sensor 2-10 sends a liquid level too low signal to a control system of the acid-base washing system, the control system sends an alarm signal and controls the water inlet electromagnetic valve 2-11 to be opened, tap water flows into the neutralizing water tank 2-1 through the water inlet 2-7, when the liquid level in the neutralizing water tank 2-1 reaches a set height, the third liquid level sensor 2-10 sends a liquid level too high signal to the control system of the acid-base washing system, the control system sends the alarm signal and controls the water inlet electromagnetic valve 2-11 to be closed, the water injection into the neutralization water tank 2-1 is stopped.
In addition, the acid-base washing system shown in fig. 1 is a structural schematic diagram integrated with laboratory equipment, and besides the structural form, the acid-base washing system can be independently integrated, as shown in fig. 7, the upper end of the integrated acid-base washing system is an acid-base gas collecting device, the lower end of the integrated acid-base washing system is a neutralizing device, at this time, the exhaust outlets of a plurality of laboratory equipment can be simultaneously connected with the gas inlets 1-4 of the acid-base washing system, and one acid-base washing system can treat acid-base gas generated in the working process of the plurality of laboratory equipment.
On the other hand, the utility model also provides a fume chamber, as shown in fig. 7, including the cabinet body 3, air exit 4 and above-mentioned arbitrary acid-base washing system, air exit 4 is connected with air inlet 1-4.
when the ventilation cabinet of the utility model is used, acid and alkali gas generated by the ventilation cabinet enters the shell 1-1 through the air outlet 4 and the air inlet 1-4, and the water in the neutralizing water tank 2-1 is sprayed downwards through a spraying mechanism 1-8 under the driving action of a circulating pump 2-3, the formed water mist is fully contacted with the upward acid-base gas in a water separating layer 1-2, a large amount of acid-base gas is dissolved in the water mist to form water drops, the water drops flow into the neutralizing water tank 2-1 through a first water outlet 1-7, an automatic medicine adding instrument 2-6 adds a proper amount of reagent or liquid medicine into the neutralizing water tank 2-1 according to the pH value of the water in the neutralizing water tank 2-1 to neutralize the acid-base components in the neutralizing water tank 2-1, and the neutralized water is discharged through a second water outlet 2-2. And the treated gas is exhausted through exhaust ports 1-10.
The utility model discloses a set up acid-base washing system, handle the acid-base gas that the fume chamber produced in the experimentation for the combustion gas is less with the influence that waste water produced the environment, and is more energy-concerving and environment-protective, and only to the preparation of laboratory paraphernalia, the cost is lower.
the utility model discloses a fume chamber can be used for the experiment of strong acid alkali such as hydrochloric acid, nitric acid, hydrofluoric acid and the organic chemical substance of soluble in water, uses extensively.
Further, the bottom of the cabinet body 3 is preferably provided with a storage cabinet 5, the acid-base shell 1-1 is arranged at the top of the cabinet body 3, and the neutralization device 2 is arranged in the storage cabinet 5. Through setting up acid-base casing 1-1 at the top of the cabinet body 3, neutralization apparatus 2 sets up in cabinet 5 for acid-base washing system sets up the device of integral type with the fume chamber, and the staff of being convenient for operates fume chamber and acid-base washing system simultaneously.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An acid-base scrubbing system comprising an acid-base gas collection means and a neutralization means located below the acid-base gas collection means, wherein:
the acid-base gas collecting device comprises a shell, wherein a gas inlet is formed in the lower part of the shell, a water separating layer, a spraying mechanism and a gas outlet are arranged in the shell, the water separating layer is arranged above the gas inlet, the spraying mechanism is arranged above the water separating layer, the gas outlet is arranged above the spraying mechanism, and a first water outlet is formed in the bottom of the shell;
the neutralizing device comprises a neutralizing water tank connected with the first water discharging port, a circulating pump and an automatic dosing instrument, wherein the circulating pump and the automatic dosing instrument are respectively connected with the neutralizing water tank, the output end of the circulating pump is connected with the spraying mechanism through a water supply pipe, and a second water discharging port is formed in the bottom of the neutralizing water tank.
2. The acid-base washing system of claim 1, wherein the water separation layer comprises filter cotton and a plurality of water separation balls arranged above the filter cotton, the water separation balls are hollow oval balls, and a plurality of water separation bands are arranged in the radial direction and the axial direction of the water separation balls.
3. The acid-base washing system of claim 2, wherein the spray mechanism comprises a main conduit connected to the water supply line and a plurality of spray nozzles disposed on the main conduit.
4. The acid-base washing system of claim 3, wherein the nozzle is an atomizing nozzle with a spray angle of 60-130 °.
5. the acid-base washing system of claim 1, wherein a defogging layer is arranged in the shell between the spraying mechanism and the exhaust port, and the defogging layer is a wire mesh made of a non-metallic material.
6. The acid-base washing system according to any one of claims 1-5, wherein the bottom of the housing is provided with a boss protruding towards the interior of the housing, the gas inlet is provided on the boss, the interior of the housing is provided with a baffle, and the baffle is positioned between the gas inlet and the water diversion layer;
Alternatively, the air inlet is disposed on a sidewall of the housing.
7. The acid-base wash system of claim 6, wherein the automatic dosing meter comprises a first storage tank for storing an acidic reagent and a second storage tank for storing an alkaline reagent, the first and second storage tanks being connected to the neutralization water tank by solenoid valves, respectively.
8. The acid-base wash system of claim 7, wherein the first and second storage tanks have first and second level sensors disposed therein, respectively, and the neutralizing tank has a pH sensor and a third level sensor disposed therein.
9. A fume hood comprising a hood body and an exhaust outlet, and further comprising the acid-base scrubbing system of any one of claims 1-8, wherein the exhaust outlet is connected to an air inlet.
10. a fume hood according to claim 9, wherein a storage cabinet is arranged at the bottom of the cabinet body, the acid-base shell is arranged at the top of the cabinet body, and the neutralizing device is arranged in the storage cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300068.XU CN209735314U (en) | 2019-03-09 | 2019-03-09 | acid-base washing system and fume hood with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300068.XU CN209735314U (en) | 2019-03-09 | 2019-03-09 | acid-base washing system and fume hood with same |
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| Publication Number | Publication Date |
|---|---|
| CN209735314U true CN209735314U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920300068.XU Active CN209735314U (en) | 2019-03-09 | 2019-03-09 | acid-base washing system and fume hood with same |
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| CN (1) | CN209735314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675655A (en) * | 2020-12-28 | 2021-04-20 | 山东诺方电子科技有限公司 | Self-cleaning water filtering dust removal device and method |
-
2019
- 2019-03-09 CN CN201920300068.XU patent/CN209735314U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675655A (en) * | 2020-12-28 | 2021-04-20 | 山东诺方电子科技有限公司 | Self-cleaning water filtering dust removal device and method |
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