CN215314617U - Chemistry experiment room multifunctional safety fume chamber with waste liquid treatment system - Google Patents
Chemistry experiment room multifunctional safety fume chamber with waste liquid treatment system Download PDFInfo
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- CN215314617U CN215314617U CN202121605536.8U CN202121605536U CN215314617U CN 215314617 U CN215314617 U CN 215314617U CN 202121605536 U CN202121605536 U CN 202121605536U CN 215314617 U CN215314617 U CN 215314617U
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Abstract
The utility model discloses a multifunctional safety fume hood with a waste liquid treatment system for a chemical laboratory, wherein a fume hood body is divided into a fume chamber and a storage chamber by an operation table, an acid washing tank and an alkali washing tank are embedded on the operation table, a lifting table, a water tank, a waste liquid neutralizing tank and a waste liquid tank are arranged in the storage chamber, an exhaust pipe at the top of the fume chamber is detachably communicated with an outlet of a breather valve at the top of the waste liquid tank and an air outlet pipe at the top of the waste liquid neutralizing tank through an air suction pipe, the bottoms of the acid washing tank and the alkali washing tank are communicated with the waste liquid neutralizing tank, and the waste liquid neutralizing tank is communicated with the waste liquid neutralizing tankThe tank top is also provided with a liquid inlet pipe which is detachably communicated with a liquid discharge pipe extending into the waste liquid neutralization tank bottom, and the waste liquid neutralization tank is communicated with external CO through a hose2The gas cylinder still includes pH detector, magnetism float level gauge and is used for detecting the pH value and the liquid level of waste liquid in the waste liquid neutralization case, is equipped with magnetic stirrers in the waste liquid neutralization case, and the elevating platform is embedded to have the rotatory solenoid of drive magnetic stirrers, and the outer heat sink of water tank takes out the water in the water tank after the cooling in the endless conveyor water tank.
Description
Technical Field
The utility model relates to chemistry experiment room work cabinet specifically is a chemistry experiment room safety fume chamber to can carry out waste liquid preliminary treatment and experiment operation, and the integration sets up the system of preliminary treatment experiment waste liquid under the fume chamber, has convulsions and cooling function, avoids the harmful or combustible gas enrichment in the cabinet of waste liquid release, and cooling system in the cabinet reduces the temperature of waste liquid bucket in real time simultaneously, keeps putting hot melting waste liquid bucket in avoiding waste liquid bucket, leads to the waste liquid to reveal.
Background
The fume hood is one of important safety devices in a laboratory, acid and alkali waste liquid is inevitably generated in the experiment, the conventional treatment mode is that the acid and alkali waste liquid is neutralized and then is put into a waste liquid barrel, and the whole waste liquid barrel is delivered to a garbage treatment plant for incineration treatment.
The waste liquid barrel belongs to potential safety hazards in a laboratory, on one hand, liquid temporarily stored in the waste liquid barrel can continuously volatilize inflammable and explosive gases or toxic and harmful gases, and the waste liquid barrel is generally made of plastic materials and cannot resist high pressure; in addition, when the acid-base waste liquid is pretreated in a laboratory, the waste liquid is neutralized firstly by an acid-base neutralization method, the acid-base neutralization belongs to an exothermic reaction, and therefore, the waste liquid barrel can be melted or the volume of the waste liquid barrel can expand to explode after the temperature in the waste liquid barrel is rapidly increased, and the problems are urgently needed to be solved in the pretreatment of the waste liquid in the laboratory.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of providing a device for carrying out acid-base neutralization on acid-base waste liquid in a chemical laboratory and pre-storing the waste liquid, solving the problems of temperature reduction of the waste liquid, discharge of gas volatilized from the waste liquid in an emergency, no residual volatile gas in the laboratory and sealing of a waste liquid barrel.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the multifunctional safe fume hood is characterized in that a lifting platform, a water tank, a waste liquid neutralizing tank and a waste liquid tank are arranged in the storage chamber, a breather valve is arranged at the top of the waste liquid neutralizing tank, an air outlet pipe is arranged at the top of the waste liquid neutralizing tank, the exhaust pipe is detachably communicated with an outlet and an air outlet pipe of the breather valve through an air suction pipe, the bottoms of the pickling tank and the alkali cleaning tank are respectively communicated with the waste liquid neutralizing tank through a liquid discharge pipe, and the waste liquid neutralizing tank and the waste liquid tank are hung in the water of the water tank, the waste liquid tank top still is equipped with the feed liquor pipe, and the feed liquor pipe can be dismantled the intercommunication with the fluid-discharge tube that stretches into waste liquid neutralization bottom of the case portion, the top of waste liquid neutralization case still communicates the outside CO of fume chamber body through the hose2Gas cylinder or inflater, be equipped with rotary valve on outlet duct, downcomer, the feed liquor pipe, be equipped with pH detector, magnetism float level gauge on the waste liquid neutralization case and be used for detecting the pH value and the liquid level of the waste liquid that holds, be equipped with magnetic stirrers in the waste liquid neutralization case, the elevating platform is embedded to have the rotatory solenoid of drive magnetic stirrers, the water tank is equipped with the heat sink outward, including the semiconductor heat sink and the pump that communicate each other, the heat sink takes out the water in the water tank after the cooling in the circulation transport water tank.
Furthermore, transparent windows which are opposite to the pH detector and the magnetic float liquid level meter are arranged on the surface of the storage chamber and the surface of the water tank.
Furthermore, an exhaust and air inlet channel communicated with an outlet is arranged in the breather valve, one end of the exhaust and air inlet channel, which is positioned in the breather valve, is provided with an upper valve disc hole and a lower valve disc hole which are concentric and vertical to a central axis of the breather valve, the upper sides of the two valve disc holes are respectively blocked by an upper valve disc and a lower valve disc which can move along the central axis of the breather valve, a slide rod which can slide along the exhaust and air inlet channel and a snap ring sleeved on the periphery of the slide rod are also arranged in the exhaust and air inlet channel, the snap ring is fixedly connected with the inner side of the exhaust and air inlet channel so that the slide rod can move along the axis of the snap ring, an annular protruding part is arranged on the inner periphery of the outlet, a spring is arranged between the slide rod and the annular protruding part, the slide rod is made of a permanent magnetic material, the outlet is detachably connected with an air suction pipe through a movable joint, the valve discs are made of a ferromagnetic material, when the slide rod is pushed to be tightly attached to the upper movable joint of the lower valve disc hole by the spring, the lower valve disc is prevented from moving upwards and opening, when the outlet of the breather valve is connected with the air suction pipe through the hinge joint, the sliding rod is attracted to the outlet side by the hinge joint and does not prevent the lower valve disc from moving upwards and opening.
Compared with the existing experiment table, the utility model has the beneficial effects that: hydrologic cycle cooling in the water tank, can avoid the waste liquid temperature rise in waste liquid neutralization case and the waste liquid case to lead to the box to melt, the elevating platform liftable, be convenient for take out the waste liquid case, the breathing pipe can discharge the volatile gas or the gas that the reaction produced in waste liquid neutralization case and the waste liquid case through the suction, through cutting off the intercommunication relation of waste liquid neutralization case and breathing pipe and lower liquid pipe, aerify in the waste liquid neutralization case again, can be with the waste liquid discharge after the neutralization store in the waste liquid case, the pH value and the liquid level of waste liquid neutralization case are monitored easily, the waste liquid case also is convenient for take out. After the waste liquid tank is taken out, when the waste liquid tank is communicated with an iron exhaust pipeline, no exhaust is performed, and the environmental pollution is avoided.
Drawings
FIG. 1 is a schematic sectional view of a front view of a fume hood body;
fig. 2 is an enlarged view of a portion of the breather valve of the fumehood body.
Detailed Description
The utility model is further illustrated below with reference to specific embodiments and the accompanying drawings. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.
As shown in FIG. 1, the embodiment of the utility model relates to a chemical laboratory multifunctional safety fume hood with a waste liquid treatment system, which comprises a fume hood body 1, wherein an operation table 3 is horizontally arranged in the fume hood body 1, the fume hood body 1 is divided into an upper fume chamber 2 and a lower storage chamber 4 by the operation table 3, an operation window 5 is arranged on the front side of the fume chamber 2, an acid washing tank 61 and an alkali washing tank 62 are embedded on the side of the operation table facing the storage chamber 4, the bottoms of the acid washing tank 61 and the alkali washing tank 62 are respectively communicated with a waste liquid neutralization box 10 in the storage chamber 4 through a lower liquid pipe 63, a rotary valve 64 is arranged on the lower liquid pipe 63, the waste liquid neutralization box 10 is communicated with a waste liquid box 11 through a liquid discharge pipe 65, a breather valve 6 is arranged on the top of the waste liquid box 11, an exhaust pipe 7 is arranged on the top of the fume chamber 2, one end of the exhaust pipe 7 in the fume chamber 2 is connected with an exhaust hood 8, the exhaust pipe 7 is also communicated with an outlet 66 of the breather valve 6 and an exhaust pipe 101 of the waste liquid neutralization box 10 through an air suction pipe 9, a rotary valve 64 is also arranged on the gas outlet pipe 101, one end of a liquid discharge pipe 65 extends into the bottom of the waste liquid neutralizing tank 10, the other end of the liquid discharge pipe is detachably connected with a liquid inlet pipe 67 at the top of the waste liquid tank 11 through a movable joint 68, the rotary valve 64 is also arranged on the liquid inlet pipe 67, a pH detector 102, a magnetic float level meter 103 and a magnetic stirrer 104 are further arranged in the waste liquid neutralizing tank 10, and the top of the waste liquid neutralizing tank 10 is further communicated with CO outside the ventilating cabinet body 1 through a gas exhaust pipe 1052A gas cylinder or an inflator. The air suction pipe 9 is communicated with an outlet 66 of the breather valve 6 and is also detachably connected through a movable joint 68, the water tank 20 placed on the lifting platform 30 is further arranged in the storage chamber 4, the waste liquid tank 11 and the waste liquid neutralization tank 10 are respectively suspended in the water tank 20 through a liquid discharge pipe 63 and the air suction pipe 9, an electromagnetic coil for driving the magnetic stirrer 104 is embedded in the lifting platform 30, the cooling device 40 is arranged outside the water tank 20 and comprises a semiconductor cooling device and a pump which are mutually communicated, and the cooling device 40 pumps water in the water tank 20 for cooling and then circularly conveys the water to the water tank 20.
Therefore, when in use, the acid waste liquid and the alkali waste liquid are respectively poured into the pickling tank 61 and the alkali tank 62, and then are neutralized in the waste liquid10, gradually mixing and neutralizing, detecting the pH value by a pH detector 102, supplementing acid or alkali according to the pH value for neutralizing, cooling the waste liquid neutralizing tank 10 by water circulation in the water tank 20, pumping waste gas generated by acid-base neutralization to an exhaust pipe 7 through an air outlet pipe 101 and an air suction pipe 9 of the waste liquid neutralizing tank 10 for centralized treatment, closing a rotary valve 64 of the air outlet pipe 101 and a liquid outlet pipe 63 of the waste liquid neutralizing tank 10 and opening a rotary valve 67 of a liquid inlet pipe 67 of the waste liquid tank 11 when the liquid level in the waste liquid neutralizing tank 10 is high, and then passing through CO2The gas cylinder is used for inflating the waste liquid neutralizing tank 10, the waste liquid after acid and alkali neutralization can be discharged into the waste liquid tank 11 for storage, the waste liquid tank 11 is cooled by the water tank 20 in real time, and meanwhile the breathing valve 6 of the gas cylinder is communicated with the gas suction pipe 9 and used for discharging gas generated by continuous reaction or volatilization of the waste liquid in the waste liquid tank 11.
After the waste liquid is filled, the height of the lifting platform 30 can be reduced, the connection between the liquid discharge pipe 65 and the liquid inlet pipe 67 is disconnected, the waste liquid box 11 is taken out by connecting the breather valve 6 and the air suction pipe 9, and the outlet 66 of the breather valve 6 is plugged with a cork to block the outlet 66 and close the rotary valve 64 of the liquid inlet pipe 67 so as to avoid the leakage of volatilized gas.
In a further improvement, transparent windows facing the pH detector 102 and the magnetic float level meter 103 are arranged on the surface of the storage chamber 4 and the surface of the water tank 20, so that the pH value and the liquid level of the waste liquid neutralization tank 10 can be observed conveniently.
In addition, as shown in fig. 2 which is an enlarged view of a in fig. 1, an exhaust and gas inlet channel 501 communicated with the outlet 66 is arranged in the breather valve 6, a valve disc hole 502 which is concentric and perpendicular to the central axis of the breather valve 6 is arranged at one end of the exhaust and gas inlet channel 501 in the breather valve 6, and the upper sides of the upper valve disc hole 502 and the lower valve disc hole 502 are respectively blocked by an upper valve disc 503 and a lower valve disc 504 which can move along the central axis of the breather valve 6.
The exhaust and air inlet channel 501 is also internally provided with a sliding rod 505 capable of sliding along the exhaust and air inlet channel 501 and a clamping ring 509 for limiting the sliding rod 505, the sliding rod 505 is sleeved on the clamping ring 509 and can move along the axis of the clamping ring 509, the clamping ring is fixedly connected with the inner side of the exhaust and air inlet channel, the inner periphery of the outlet 66 is provided with an annular protrusion 506, a spring 507 is arranged between the sliding rod 505 and the annular protrusion 506, the sliding rod 505 is made of permanent magnetic material, the movable joint 68 is made of ferromagnetic material, the sliding rod 505 is pushed by the spring 507 to be tightly attached to the upper surface of the lower valve disc 504 of the valve disc hole 504 to prevent the lower valve disc 504 from opening, and when the outlet 66 of the breather valve 6 is connected with the air suction pipe 9 through the movable joint 68, the sliding rod 505 is attracted to the outlet 66 side by the movable joint 68, and the valve disc 504 is not prevented from opening any more.
Therefore, when in use, after the outlet 66 of the breather valve 6 is connected with the air suction pipe 9 through the movable joint 68, if the air pressure in the waste liquid tank 11 rises due to volatilization of waste liquid or gas generation, the lower valve disc 504 is pushed open for air exhaust, and after the waste liquid tank 11 is detached from the air suction pipe 9, the sliding rod 505 is pushed to the lower valve disc 504 to prevent the lower valve disc 504 from opening, so that after the waste liquid tank 11 is taken out from the storage chamber 4, the gas in the waste liquid tank 11 can still be prevented from leaking until the air exhaust pipe of the ferromagnetic material is connected again.
Claims (3)
1. A multifunctional safety fume hood with a waste liquid treatment system for a chemical laboratory comprises a fume hood body, wherein an operation table is horizontally arranged in the fume hood body, the operation table separates the fume hood body into a fume chamber above and a storage chamber below, a pickling tank and an alkali washing tank are embedded in the operation table towards the storage chamber, an exhaust pipe is arranged at the top of the fume chamber, one end of the exhaust pipe in the fume chamber is connected with an exhaust hood, and the multifunctional safety fume hood is characterized in that a lifting table, a water tank, a waste liquid neutralizing tank and a waste liquid tank are arranged in the storage chamber, a breather valve is arranged at the top of the waste liquid tank, an outlet pipe is arranged at the top of the waste liquid neutralizing tank, the exhaust pipe can be detachably communicated with an outlet and an outlet pipe of the breather valve through an air suction pipe, the bottoms of the pickling tank and the alkali washing tank are respectively communicated with the waste liquid neutralizing tank through a liquid discharging pipe, and the waste liquid neutralizing tank is suspended in the water of the water tank, the waste liquid tank top still is equipped with the feed liquor pipe, and the feed liquor pipe can be dismantled the intercommunication with the fluid-discharge tube that stretches into waste liquid neutralization bottom of the case portion, the top of waste liquid neutralization case still communicates the outside CO of fume chamber body through the hose2The gas cylinder or the inflator is provided with a rotary valve on the gas outlet pipe, the liquid outlet pipe and the liquid inlet pipe, the waste liquid neutralizing tank is provided with a pH detector and a magnetic floater liquid level meter for detecting the pH value and the liquid level of the contained waste liquid, the waste liquid neutralizing tank is provided with a magnetic stirrer, the elevating platform is embedded with an electromagnetic coil for driving the magnetic stirrer to rotate,and a cooling device is arranged outside the water tank and comprises a semiconductor cooling device and a pump which are communicated with each other, and the cooling device pumps water in the water tank out for cooling and then circularly conveys the water tank.
2. The multifunctional safety fume hood for chemical laboratory with waste liquid treating system as set forth in claim 1, wherein transparent windows facing the pH meter and the magnetic float level meter are set on the surface of the storage room and the surface of the water tank.
3. The multifunctional safety fume hood for chemical laboratory with waste liquid treating system as claimed in claim 1, wherein the breather valve has an exhaust and intake passage communicating with the outlet, the end of the exhaust and intake passage inside the breather valve has two valve disc holes concentric with and perpendicular to the center axis of the breather valve, the upper side of the two valve disc holes are respectively sealed by the upper valve disc and the lower valve disc which can move along the center axis of the breather valve, the exhaust and intake passage has a slide rod capable of sliding along the exhaust and intake passage and a clasp sleeved on the outer circumference of the slide rod, the clasp is connected and fixed to the inner side of the exhaust and intake passage so that the slide rod can move along the axis of the clasp, the inner circumference of the outlet has an annular protrusion, a spring is arranged between the slide rod and the annular protrusion, the slide rod is made of permanent magnetic material, the outlet is detachably connected to the air suction pipe through a movable joint, the movable joint is made of ferromagnetic material, the sliding rod is pushed by a spring to abut against the upper surface of the lower valve disc of the valve disc hole, the lower valve disc is prevented from moving upwards to be opened, and when the outlet of the breather valve is connected with the air suction pipe through the hinge joint, the sliding rod is attracted to the outlet side by the hinge joint and does not prevent the lower valve disc from moving upwards to be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121605536.8U CN215314617U (en) | 2021-07-15 | 2021-07-15 | Chemistry experiment room multifunctional safety fume chamber with waste liquid treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121605536.8U CN215314617U (en) | 2021-07-15 | 2021-07-15 | Chemistry experiment room multifunctional safety fume chamber with waste liquid treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215314617U true CN215314617U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121605536.8U Active CN215314617U (en) | 2021-07-15 | 2021-07-15 | Chemistry experiment room multifunctional safety fume chamber with waste liquid treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215314617U (en) |
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2021
- 2021-07-15 CN CN202121605536.8U patent/CN215314617U/en active Active
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