CN206008380U - A kind of organic liquid volatile matter withdrawer for air dry oven - Google Patents

Abstract

The utility model discloses an organic liquid volatile matter recovery device for a blast drying box, which relates to the field of drying and environmental protection. Composition, a three-way air guide pipe is provided between the dust filter and the exhaust port of the blast drying box, and a direct exhaust gas switch and a post-treatment gas switch are respectively provided on the outlet pipe of the three-way air guide pipe. There is a post-processing air guide pipe between the booster air pumps, and there are multiple groups of bubbling air discs at the inner bottom of the vertical water tank, and each bubbling air disc is connected with the pressurized air through a corresponding pressure-resistant air guide hose. The vertical water tank is connected with the pump, and the upper and middle sides of the vertical water tank are provided with multi-layer fine wire mesh. Tube. The utility model realizes the recovery of a series of water-soluble common flammable organic substances discharged through the blast drying box at low cost, and prevents the above-mentioned gases from being directly discharged into the atmosphere, and is suitable for hot-air drying in experiments involving the above-mentioned substances Environmentally friendly recycling and reuse of waste gas generated in the process.

Description

A recovery device for organic liquid volatiles used in a blast drying box

Technical field:

The utility model relates to the field of drying and environmental protection, in particular to a recovery device for organic liquid volatiles used in a blast drying box.

Background technique:

Blast drying oven is currently a common drying equipment for professional laboratories in chemistry, materials and other disciplines. It has the characteristics of fast drying speed, high drying efficiency, and wide adaptability. Due to the relatively simple composition of the equipment, the operation and maintenance costs are low. Therefore, it is an essential equipment in many laboratories.

The traditional blast drying box is mainly composed of box body, heating resistance wire, blower motor fan and electronic control unit, etc. During operation, it sucks air through the fan at the bottom of the box body and forms an upward airflow, and heats it After the resistance wire heats the air to a predetermined temperature, it flows through the sample placed on the upper part. The hot air heats the sample so that the volatile substances in the sample are vaporized and evaporated, and the hot air flows through the exhaust pipe on the upper part of the box. Drain out of the box.

The traditional blast drying oven directly discharges the above-mentioned air containing harmful volatile organic gases into the atmosphere, and cannot recover the above-mentioned volatile substances, which is not conducive to reducing production costs and environmental protection. In many experiments (the most typical example is the preparation of functional ceramics), volatile organic ball milling agents (ethanol, acetone, methyl ethyl ketone, etc.) are often used, and the amount of these ball milling agents is relatively large. During the drying process of the slurry using the above-mentioned blast drying oven, since the volatilized gas of these substances is flammable, it has a greater safety hazard to the experiment and some related small-batch production processes, and some volatile gases are harmful to the human body. Poisonous (various ketones), so existing technology can't solve above-mentioned substance gas to the environmental pollution and the problem of recovery in drying process.

Utility model content:

The technical problem to be solved by the utility model is to provide a matching recycling device that can process the exhaust gas produced by the blast drying box and realize the recovery of organic substances in the exhaust gas.

The technical problem to be solved by the utility model adopts the following technical solutions to realize:

An organic liquid volatile recovery device for a blast drying box, connected to the exhaust port of the blast drying box, composed of a dust filter, a booster air pump and a vertical water tank, the dust filter and the blast drying There is a three-way air guide pipe between the exhaust ports of the box. The outlet pipe of the three-way air guide pipe is respectively provided with a direct discharge gas switch and a post-treatment gas switch. A post-treatment guide is provided between the dust filter and the booster air pump. The air pipe, the inner bottom of the vertical water tank is provided with multiple groups of bubbling air discs, and each bubbling air disc is connected to the booster air pump through a corresponding pressure-resistant air guide hose, and the inner middle of the vertical water tank There are multiple layers of fine wire mesh on the upper side, an exhaust hole connected to the outdoor exhaust fan and a water inlet pipe leading to the absorption liquid at the top, and a waste liquid drainage pipe at the bottom.

The pressure-resistant air guiding hose is provided with a stop valve, and there are multiple stop valves, which are combined into an array.

The quantity and inner diameter of the pressure-resistant air-conducting hoses are adjusted accordingly according to the model and exhaust volume of the matched blast drying oven.

The vertical water tank is also provided with a water level indicator, an ultrasonic transducer and an impeller agitator.

The installation position of the booster air pump is higher than the liquid level in the vertical water tank to prevent the absorption liquid from being poured into the pump when the stop valve fails.

Working principle of the utility model:

Through the setting of the three-way air guide pipe, it is used to realize the conversion of the two methods of gas direct discharge and post-treatment. The vertical water tank is the main body of the equipment to realize the recovery function, in which the direction of the gas is in the downward direction and the upward direction, while the direction of the absorption liquid is opposite to it. Before operation, the absorption water should be imported from the water inlet pipe above the water tank, or the absorption liquid dissolved in a certain absorbent or reactant, and when the water level is suitable, turn on the booster air pump to extract air, and then start to run the blast drying box; During the operation of the blast drying oven, the hot air containing organic volatiles enters the water tank through the pressure-resistant air-conducting hose and the stop valve, and generates multiple groups of extremely fine air bubbles through the decomposition and fragmentation of the bubbling air disc. , The bubbles fully contact with water during the rising process to complete the absorption process of organic substances in it. After the absorption process, the aqueous solution can be taken out through the drain pipe under the water tank and recovered by distillation.

The beneficial effects of the utility model are: the device is used to recover a series of water-soluble common combustible organic substances (ethanol, acetone, butanone, etc.) discharged through the blast drying box at low cost, and prevent the above-mentioned The gas is directly discharged into the atmosphere, which is suitable for the environmental protection recycling and reuse of the waste gas generated in the hot air drying process in the experiment involving the above substances (especially the preparation of functional ceramics).

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Among them: 1- blast drying box; 2- dust filter; 3- booster air pump; 4- vertical water tank; 5- three-way air guide pipe; 6- direct exhaust gas switch; -After-treatment air duct; 9-bubbling air disc; 10-pressure-resistant air duct; 11-fine wire mesh; 12-vent hole; 13-inlet pipe; 14-drainage pipe; 15-stop valve Array; 16-water level indicator; 17-ultrasonic transducer; 18-impeller agitator.

detailed description:

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the specific implementation of the utility model will be further elaborated below in conjunction with specific illustrations.

As shown in Figure 1, an organic liquid volatile matter recovery device used in a blast drying box is connected to the exhaust port of the blast drying box 1, and consists of a dust filter 2, a booster air pump 3 and a vertical water tank 4 . There is a three-way air guide pipe 5 between the dust filter and the exhaust port of the blast drying box. The outlet pipe of the three-way air guide pipe is provided with a direct exhaust gas switch 6 and a post-treatment gas switch 7 respectively. The dust filter and the pressurized air A post-processing air duct 8 is arranged between the pumps. Among them, the gas flow rate allowed by the dust filter cannot be too slow, otherwise it will increase the workload of the booster air pump. The inner bottom of the vertical water tank is provided with multiple groups of bubbling air discs 9, and each bubbling air disc is connected to the booster air pump through a corresponding pressure-resistant air guide hose 10, and the top of the vertical water tank is provided with an outdoor exhaust The exhaust hole 12 of the fan and the water inlet pipe 13 leading into the absorption liquid are provided with a waste liquid drain pipe 14 at the bottom. A stop valve array 15 is provided on the pressure-resistant air guiding hose, and the stop valve array is an array formed by plugging a plurality of stop valves side by side. The number of pressure-resistant air-conducting hoses can be increased to 8-10 according to actual design needs, and the inner diameter is between 3-5mm. The installation position of the booster air pump is higher than the liquid level in the vertical water tank to prevent the absorption liquid from being poured into the pump when the stop valve fails. In order to facilitate water inflow and drainage, the waterway of the vertical water tank is the up-in and down-out type, and a water level indicator 16 can be installed on the water tank. The air path is bottom-in and top-out. The gas is broken down by the bubbling gas disc to generate multiple groups of ultra-fine bubble flows. The bubbles fully contact with the absorption liquid during the rising process to complete the absorption of organic substances. process, in order to prevent the air bubbles from merging in the process of rising and make the absorption process insufficient, a multi-layer fine wire mesh 11 is arranged on the upper side of the water tank as required. After reaching the top page of the solution, it can be discharged through the exhaust channel. In order to enhance the overall effect of operation, the equipment still has room for expansion, and a series of accessories can be installed, such as ultrasonic transducer 17 and impeller agitator 18, to realize the recirculation of air bubbles containing trace organic matter and ultrasonic crushing of air bubbles, etc. The process can also further prolong the contact time of such gases with water and strengthen the absorption process; sensors can be installed to monitor the temperature, gas flow rate, and organic substance content in water in real time.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. a kind of organic liquid volatile matter withdrawer for air dry oven, it is characterised in that：It is connected to air dry oven row In QI KOU, it is made up of dust filter unit, pressurizing air air pump and vertical water tank, the dust filter unit and air dry oven air vent Between be provided with threeway airway, be respectively equipped with the escape pipe of threeway airway in line gas switch and post-treatment gas switch, It is provided with post processing airway between the dust filter unit and pressurizing air air pump, the inner bottom of the vertical water tank is provided with multigroup Bubbling gas disk, each bubbling gas disk are connected with pressurizing air air pump by pressure soft air-guide pipe accordingly, the vertical water tank interior In portion, upside is provided with multilamellar fine metal mesh, and top is provided with the steam vent for connecing outdoor exhaust fan and the water inlet pipe for being passed through absorbing liquid, Bottom is provided with waste liquid drain pipe.

2. the organic liquid volatile matter withdrawer for air dry oven according to claim 1, it is characterised in that：Described Pressure soft air-guide pipe is provided with flow-stop valve, and the flow-stop valve has multiple, and is combined into the form of array.

3. the organic liquid volatile matter withdrawer for air dry oven according to claim 1, it is characterised in that：Described The quantity of pressure soft air-guide pipe and internal diameter are adjusted accordingly according to the difference of air dry oven model joined together and capacity.

4. the organic liquid volatile matter withdrawer for air dry oven according to claim 1, it is characterised in that：Described Vertical water tank is additionally provided with dipperstick, ultrasonic transducer and impeller-agitator.

5. the organic liquid volatile matter withdrawer for air dry oven according to claim 1, it is characterised in that：Described The installation site of pressurizing air air pump higher than the liquid level in vertical water tank, when preventing fluid stopping defective valve, pour in down a chimney into pump by absorbing liquid Interior.