CN109908988B - A sub-boiling acid distillation purifier - Google Patents

Abstract

The invention discloses a distillation purifier for sub-boiling acid, which belongs to reagent purification equipment and structurally comprises a crude acid reagent bottle for containing a crude acid solution to be purified and a pure acid reagent bottle for containing a purified pure acid solution, wherein the crude acid reagent bottle is provided with a heating device with adjustable temperature, the upper part of the crude acid reagent bottle is communicated with a condensation cover, and a condenser is arranged above the condensation cover; the condensation cavity of condenser communicates with condensation cover and pure sour reagent bottle respectively, still is provided with the negative pressure interface on the condensation cavity, and the negative pressure interface passes through negative pressure union coupling negative pressure device, is linked together through atmospheric pressure balance pipe between condensation cover bottom and the pure sour reagent bottle, is linked together through the pure sour conveyer pipe between condensation cavity bottom and the pure sour reagent bottle. According to the distillation purifier for the sub-boiling acid, disclosed by the invention, a low-pressure environment is formed in the device, the heating temperature is further reduced, the energy is saved, and meanwhile, the distillation and purification efficiency can be improved.

Description

Inferior boiling acid distillation purifier

Technical Field

The invention belongs to the technical field of reagent purification, relates to equipment for a laboratory, and particularly relates to a distillation purifier for sub-boiling acid.

Background

In routine laboratory analysis, various acids and reagents are widely used in daily sample processing and analysis, however, it is the purity of the acids and reagents that is very troublesome for many experimenters. Many laboratories often have poor acid purity, which causes bias and errors in the results of the analysis. Commercially available ultrapure acids are often expensive and difficult to meet the large demand for acids in routine analysis. Therefore, purification to optimize acid quality is the most economically feasible route.

In view of this, there is a need for an acid purifier suitable for use in a laboratory to meet the needs of laboratory acid purification.

Disclosure of Invention

In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a distillation purifier for sub-boiling acid, which has a simple structure, a small volume and a high purification efficiency, and is suitable for use in a laboratory.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention provides a distillation purifier for subfluidized acid, which comprises a crude acid reagent bottle for containing a crude acid solution to be purified and a pure acid reagent bottle for containing a purified pure acid solution, wherein the crude acid reagent bottle is provided with a heating device with adjustable temperature, the upper part of the crude acid reagent bottle is communicated with a condensation cover, and a condenser is arranged above the condensation cover; the condensation cavity of condenser communicates with condensation cover and pure acid reagent bottle respectively, still be provided with the negative pressure interface on the condensation cavity, the negative pressure interface passes through negative pressure union coupling negative pressure device, be linked together through atmospheric pressure balance pipe between condensation cover bottom and the pure acid reagent bottle, be linked together through the pure acid conveyer pipe between condensation cavity bottom and the pure acid reagent bottle.

The inside of condenser is provided with spiral helicine condenser pipe, and the both ends of condenser pipe set up coolant liquid import and coolant liquid export respectively, and coolant liquid import and coolant liquid export stretch out to the outside of condenser casing, are the condensation cavity that carries out the condensation to steam between the casing of condenser and the condenser pipe.

Further, the bottom of condensation cavity is provided with the first acid gathering groove of annular, and the minimum in first acid gathering groove is provided with first pure acid export, pure acid delivery pipe is through first pure acid export and condensation cavity intercommunication, and the one end that pure acid delivery pipe is close to first pure acid export is provided with the back flow, and the back flow is connected between pure acid delivery pipe and condensation cover, and the intercommunication department of back flow and pure acid delivery pipe is provided with the three-way valve and realizes the switch-on and the disconnection of back flow and pure acid delivery pipe through the switching of three-way valve.

Furthermore, the air pressure balance pipe comprises an inner pipe and an outer pipe, the inner pipe is sleeved inside the outer pipe, the length of the inner pipe is larger than that of the outer pipe, the inner pipe extends to the inside of the condensation cover, and the outer pipe is communicated with the side wall of the condensation cover.

Further, a second acid collecting groove is formed in the bottom end of the condensation cover, and the second acid collecting groove is in an annular shape communicated end to end along the inner surface of the side wall of the condensation cover; the outer pipe is communicated to the side wall of the second acid collecting groove, and the inner pipe extends to the central hole of the second acid collecting groove; the lowest point of the second acid collecting tank is provided with a backflow hole, and the backflow hole is provided with a valve for controlling the opening and the closing of the backflow hole.

Furthermore, the valve comprises a special-shaped baffle and a valve handle, the special-shaped baffle is located at the position of the return hole, the valve handle is located outside the condensation cover, the special-shaped baffle is connected with the valve handle through a connecting rod, and the connecting rod penetrates through the side wall of the condensation cover to form sealing fit with the condensation cover.

Furthermore, the bottom edge of condensation cover is provided with the card strip, be provided with on the top surface of crude acid reagent bottle with the draw-in groove of card strip looks adaptation, card strip surface and draw-in groove inside all set up elastic sealing member, and the position that is covered by the condensation cover on the crude acid reagent bottle top surface is provided with the bottleneck.

Furthermore, liquid level controllers are respectively arranged in the crude acid reagent bottle and the pure acid reagent bottle, and the liquid level controllers are connected with a working switch of the heating device, so that the heating device stops working when the liquid level of the crude acid reagent bottle is lower than a set value or the liquid level of the pure acid reagent bottle is higher than the set value.

Preferably, the liquid level controller is a non-contact liquid level sensor.

Furthermore, the bottom and the side wall of the crude acid reagent bottle are both in contact with a heating component of the heating device, a circulating pump is arranged in the crude acid reagent bottle, and the circulating pump pumps the crude acid solution and enables the crude acid solution to flow down along the inner surface of the side wall of the crude acid reagent bottle.

Furthermore, a communication module is arranged on the support, and the heating device and the liquid level controller are in communication connection with the mobile terminal through the communication module.

Furthermore, a cooling coil is arranged on the outer side of the condensation cover.

For the steadiness and the compactedness that increase whole device, it is further, crude acid reagent bottle, heating device, condensation cover and pure acid reagent bottle all set up on the support, be provided with condensation cover fixed knot on the support and construct with pure acid reagent bottle fixed knot. The condensation cover obtains reliable fixed together with crude acid reagent bottle and pure acid reagent bottle, avoids the reagent bottle to take place to empty, promotes the security of operation.

Further, the support comprises a bottom plate, a top plate and a support rod, the bottom plate and the top plate are connected through the support rod, the bottom end of the support rod extends to the lower portion of the bottom plate to form a support leg, and a pure acid reagent bottle fixing plate is arranged on one side of the bottom plate; condensation cover fixed knot constructs and pure sour reagent bottle fixed knot constructs and is the through-hole, and condensation cover fixed knot constructs the setting on the roof, and pure sour reagent bottle fixed knot constructs the setting on pure sour reagent bottle fixed plate. The support structure has the advantages of few components, small volume and light weight, and is suitable for laboratories.

Preferably, the heating device is a PTC heater.

Compared with the prior art, the invention has the beneficial effects that:

1. the boiling sub-acid distillation purifier disclosed by the invention has the advantages that the temperature of the heating device is adjustable, and the application range is wide; the condenser pipe is provided with a negative pressure interface, the negative pressure interface is connected with a negative pressure device, negative pressure can be generated inside the system, the heating temperature is reduced, and the distillation and purification efficiency is improved.

2. The invention discloses a distillation purifier for sub-boiling acid, wherein an annular first acid collecting groove is formed in the bottom end of a condensation cavity, pure acid obtained through condensation flows down along the side wall of the condensation cavity and then is accumulated in the first acid collecting groove, so that the pure acid is convenient to collect, a return pipe is arranged at one end, close to a first pure acid outlet, of a pure acid conveying pipe, the purity of the obtained condensed acid is not high at the initial stage of purification, the pure acid conveying pipe is adjusted to be closed through a three-way valve at the moment, the condensation cavity is communicated with a condensation cover through the return pipe, the part of the condensed acid is purified repeatedly through return flow, when the condensed acid obtained through stable system operation meets the purity requirement, the return pipe is adjusted to be closed through the three-way valve, the pure acid conveying pipe is communicated, the pure acid accumulated in the first acid collecting groove enters a pure acid reagent bottle through the pure acid conveying pipe, and the quality.

3. According to the sub-boiling acid distillation purifier disclosed by the invention, the air pressure balance pipe is arranged between the bottom end of the condensation cover and the pure acid reagent bottle to communicate the condensation cover and the pure acid reagent bottle, so that the air pressure in the system is further balanced, and the smoothness of air flow and liquid flow is improved; the air pressure balance pipe is arranged in a sleeve mode formed by the inner pipe and the outer pipe, the effect of balancing the air pressure in the system can be achieved, pure acid which is condensed into liquid by the condensation cover part can be collected, and the acid purification efficiency is improved.

4. In the distillation purifier for the sub-boiling acid, the bottom end of the condensation cover is provided with an annular second acid collecting groove, the acid reagent condensed into liquid in the condensation cover flows down along the side wall of the condensation cover and is accumulated in the second acid collecting tank, so that the pure acid is conveniently collected, a reflux hole is arranged at the lowest point of the second acid collecting tank, a valve for controlling the opening and the closing of the reflux hole is arranged at the reflux hole, at the initial stage of purification, the purity of the obtained condensed acid is not high, at the moment, the reflux hole is opened through the valve, and as the position of the reflux hole is lower than that of the outer tube of the air pressure balancing tube, the acid in the second acid collecting tank preferentially flows back to the crude acid reagent bottle from the reflux hole to be purified repeatedly, after the condensed acid obtained by the stable operation of the system meets the purity requirement, the reflux hole is closed through the valve, and the pure acid accumulated in the second acid collecting tank enters the pure acid reagent bottle through the outer pipe of the air pressure balancing pipe, so that the quality of the pure acid obtained in the pure acid reagent bottle is improved.

5. According to the distillation purifier for the sub-boiling acid, disclosed by the invention, the valve is composed of the special-shaped baffle, the opening and closing of the reflux hole are realized by rotating the special-shaped baffle, the structure is simple, and the operation is reliable; condensation cover and crude acid reagent bottle are connected through the card strip that has elastic sealing element and draw-in groove cooperation, can follow bottleneck department and pour into crude acid into when condensation cover is opened, and the leakproofness is good when condensation cover is buckled, has guaranteed the seal of system.

6. According to the distillation purifier for the sub-boiling acid, disclosed by the invention, the crude acid reagent bottle and the pure acid reagent bottle are respectively internally provided with the liquid level controllers, and when the liquid level of the crude acid reagent bottle is lower than a set value or the liquid level of the pure acid reagent bottle is higher than the set value, the heating device stops working, so that the automatic control is realized, the labor is saved, and the safety is improved.

7. According to the distillation purifier for the sub-boiling acid, disclosed by the invention, the liquid level controller is a non-contact liquid level sensor, so that the influence of an acid solution on the liquid level sensor is avoided; the heating device is a PTC heater, compared with the traditional electric heating wire, the PCT heater adopts a semiconductor heating material, has the characteristics of no red light and no open fire, and avoids the occurrence of fire.

8. According to the distillation purifier for the sub-boiling acid, disclosed by the invention, the cooling coil is arranged on the outer side of the condensation cover, so that the condensation efficiency of the pure acid is improved; set up the coarse acid circulation in the circulating pump messenger coarse acid reagent bottle, flow down along the lateral wall internal surface of coarse acid reagent bottle, simultaneously, the bottom and the lateral wall of coarse acid reagent bottle all contact with heating device's the part that generates heat, have increased heating area to further promote distillation efficiency.

9. The sub-boiling acid distillation purifier provided by the invention is provided with the communication module, so that the distillation purifier can be checked and controlled at a mobile terminal, and the use is very convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of section B-B of FIG. 2;

FIG. 4 is a schematic view of an internal structure of a condensation cover according to an embodiment of the present invention;

FIG. 5 is a schematic view of section C-C of FIG. 4 (the valve at the return orifice is omitted for clarity);

FIG. 6 is a schematic diagram of a valve at a return orifice according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of the joint between the condensation cover and the crude acid reagent bottle according to the embodiment of the present invention;

FIG. 8 is a schematic structural view of a liquid suction tube and a spray head according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second condensation cover according to an embodiment of the invention.

In the figure: 1 crude acid reagent bottle, 2 pure acid reagent bottle, 3 roof, 4 bottom plates, 5 bracing pieces, 6 support feet, 7 air pressure balance pipes, 71 outer pipes, 72 inner pipes, 8 negative pressure pipes, 9 negative pressure devices, 10 condensers, 11 condenser pipes, 12 coolant inlets, 13 coolant outlets, 14 pure acid delivery pipes, 15 observation areas, 16 condensation hoods, 17 first acid collecting grooves, 18 three-way valves, 19 return pipes, 20 communication ports, 21 first pure acid outlets, 22 second acid collecting grooves, 23 special-shaped baffles, 24 valve handles, 25 return holes, 26 clamping grooves, 27 bottle openings, 28 clamping strips, 29 heating devices, 30 spray heads, 31 liquid suction pipes, 32 cooling coils and 33 fixing rings.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

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 the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The first embodiment is as follows:

as shown in fig. 1, the embodiment provides a distillation purifier for subfluidized acid, which includes a crude acid reagent bottle 1 for containing a crude acid solution to be purified and a pure acid reagent bottle 2 for containing a purified pure acid solution, wherein the crude acid reagent bottle 1 is provided with a heating device capable of adjusting temperature, the upper part of the crude acid reagent bottle 1 is communicated with a condensation cover 16, and a condenser 10 is arranged above the condensation cover 16; the condensation cavity of condenser 10 is linked together with condensation cover 16 and pure acid reagent bottle 2 respectively, still be provided with the negative pressure interface on the condensation cavity, the negative pressure interface passes through negative pressure pipe 8 and connects negative pressure device 9, be linked together through atmospheric pressure balance pipe 7 between condensation cover 16 bottom and the pure acid reagent bottle 2, be linked together through pure acid conveyer pipe 14 between condensation cavity bottom and the pure acid reagent bottle 2.

The inside of condenser 10 is provided with spiral helicine condenser pipe, and the both ends of condenser pipe set up coolant liquid import 12 and coolant liquid export 13 respectively, and coolant liquid import 12 and coolant liquid export 13 stretch out to the outside of condenser 10 casing, are the condensation cavity that carries out the condensation to steam between the casing of condenser 10 and the condenser pipe. The helical condenser pipe increases the length of the condensing channel, and improves the condensing effect of the condenser 10, so that the acid steam is rapidly condensed in the condensing cavity.

The negative pressure of the negative pressure device 9 should not be set too large so as not to influence the normal flow of the air flow, and the negative pressure makes the inside of the device have certain negative pressure, so that the purposes of reducing the heating temperature and improving the distillation and purification efficiency are achieved. In order to further ensure the air pressure balance inside the device, the bottom end of the condensation cover 16 is communicated with the pure acid reagent bottle 2 through an air pressure balance pipe 7. Because the inside of the whole device is closed relative to the outside, a low-pressure environment is formed inside the device, and the effects of reducing the heating temperature and improving the distillation and purification efficiency are achieved.

As shown in fig. 2 and 3, an annular first acid collecting tank 17 is disposed at the bottom end of the condensation cavity, a first purified acid outlet 21 is disposed at the lowest point of the first acid collecting tank 17, the purified acid delivery pipe 14 is communicated with the condensation cavity through the first purified acid outlet 21, a return pipe 19 is disposed at one end of the purified acid delivery pipe 14 close to the first purified acid outlet 21, the return pipe 19 is connected between the purified acid delivery pipe 14 and the condensation cover 16, a three-way valve 18 is disposed at the communication position of the return pipe 19 and the purified acid delivery pipe 14, and the connection and disconnection between the return pipe 19 and the purified acid delivery pipe 14 are realized by switching the three-way valve 18.

As shown in fig. 4 and 5, the gas pressure balance pipe 7 includes an inner pipe 72 and an outer pipe 71, the inner pipe 72 is sleeved inside the outer pipe 71, the inner pipe 72 has a length larger than that of the outer pipe 71, the inner pipe 72 extends into the condensation cover 16, and the outer pipe 71 is communicated with a side wall of the condensation cover 16. The inner pipe 72 extends into the condensation cover 16 to balance the air pressure between the condensation cover 16 and the pure acid reagent bottle 2, and the outer pipe 71 is communicated with the condensation cover 16 and is used for collecting condensed pure acid.

A second acid collecting groove 22 is formed at the bottom end of the condensation cover 16, and the second acid collecting groove 22 forms an annular shape which is communicated end to end along the inner surface of the side wall of the condensation cover 16; the outer pipe 71 is communicated to the side wall of the second acid collecting groove 22, and the inner pipe 72 extends to the central hole of the second acid collecting groove 22; a return hole 25 is formed at the lowest point of the second acid collecting tank 22, and a valve for controlling the opening and closing of the return hole 25 is arranged at the position of the return hole.

As shown in fig. 6, the valve includes a shaped baffle 23 and a valve handle 24, the shaped baffle 23 is located at the position of the backflow hole 25, the valve handle 24 is located outside the condensation cover 16, the shaped baffle 23 and the valve handle 24 are connected through a connecting rod, and the connecting rod penetrates through the side wall of the condensation cover 16 to form a sealing fit with the condensation cover 16. It can be understood that the matching position of the connecting rod and the condensation cover 16 is provided with a self-locking mechanism to realize the positioning after the valve is opened or closed, and the self-locking mechanism can be realized by adopting the existing mechanisms such as screw threads and the like.

In this embodiment, crude acid reagent bottle 1, heating device, condensation cover 16 and pure acid reagent bottle 2 all set up on the support, be provided with condensation cover fixed knot on the support and construct with pure acid reagent bottle fixed knot. The support comprises a bottom plate 4, a top plate 3 and a support rod 5, the bottom plate 4 and the top plate 3 are connected through the support rod 5, the bottom end of the support rod 5 extends to the lower portion of the bottom plate 4 to form a support leg 6, and a pure acid reagent bottle fixing plate is arranged on one side of the bottom plate 4; condensation cover fixed knot constructs and pure sour reagent bottle fixed knot constructs and is the through-hole, and condensation cover fixed knot constructs and sets up on roof 3, and pure sour reagent bottle fixed knot constructs the setting on pure sour reagent bottle fixed plate, and bracing piece 5 passes through retainer plate 33 fixed condenser 10. As shown in figure 1, the pure acid reagent bottle fixing structure is sleeved in the middle of the pure acid reagent bottle 2, and the top end of the condensation cover 16 extends out of the condensation cover fixing structure. This structure makes condensation cover 16 obtain reliable fixed together with crude acid reagent bottle 1 and pure acid reagent bottle 2, avoids the reagent bottle to take place to empty, and the whole light in weight of device, small in size.

As shown in fig. 7, a clamping strip 28 is arranged at the bottom edge of the condensation cover 16, a clamping groove 26 adapted to the clamping strip 28 is arranged on the top surface of the crude acid reagent bottle 1, elastic sealing elements are arranged on the surface of the clamping strip 28 and inside the clamping groove 26, and a bottle mouth 27 is arranged at the position covered by the condensation cover 16 on the top surface of the crude acid reagent bottle 1. Specifically, card strip 28 can be the rubber strip, and draw-in groove 26 is inside also to set up the one deck rubber layer, and rubber has elasticity and is convenient for block and split between them, can guarantee the good sealed of both cooperation departments simultaneously.

And liquid level controllers are respectively arranged in the crude acid reagent bottle 1 and the pure acid reagent bottle 2 and are connected with a working switch of the heating device, so that the heating device stops working when the liquid level of the crude acid reagent bottle 1 is lower than a set value or the liquid level of the pure acid reagent bottle 2 is higher than the set value. In this embodiment, in order to avoid the influence of the acid solution on the liquid level controller, the liquid level controller is a non-contact liquid level sensor. When the liquid level of the crude acid reagent bottle is lower than a set value or the liquid level of the pure acid reagent bottle is higher than the set value, the system stops working, automatic control is achieved, manpower is saved, and safety is improved.

As shown in fig. 8, the bottom and the side wall of the crude acid reagent bottle 1 are in contact with the heat generating components of the heating device 29, and a circulation pump is provided in the crude acid reagent bottle 1, and draws the crude acid solution and makes it flow down along the inner surface of the side wall of the crude acid reagent bottle 1. The mode of setting up of circulating pump refers to the form of flowing water goods of furniture for display rather than for use among the prior art, and the circulating pump is installed in liquid suction pipe 31, and the coarse acid solution of extraction reaches its top shower nozzle 30 and spout via shower nozzle 30 along liquid suction pipe 31, and the coarse acid solution is spouted to the lateral wall of coarse acid reagent bottle 1 and is flowed down along its lateral wall under the effect of shower nozzle 30, has increased heating area to further promote distillation efficiency, the extraction height of pump is less than the position of atmospheric pressure balance pipe 7. The lower part of the crude acid reagent bottle 1 is provided with an observation area 15, the observation area 15 is a columnar gap and is provided with a transparent cover plate, and one side or two sides of the observation area 15 are provided with volume scales so that an operator can know the liquid amount in the reagent bottle.

The circulating pump adopts miniature acid-proof pump, and the bottom of liquid suction pipe 31 lateral wall sets up one or more through-holes to the circulating pump is to the extraction of crude acid reagent. The circulation pump can be provided with a rechargeable power supply module inside, or it can be connected to the operating circuit of the heating device 29. It can be understood that if the rechargeable power supply module is arranged in the device, the rechargeable power supply module needs to be taken out for charging when the electric quantity is insufficient, and the circulating pump needs to be taken out and put into special tools such as tweezers and the like and needs to be cleaned to remove acid reagents remained on the surface; if connect the circulating pump in heating device 29's operating circuit, preferably connect circulating pump and heating device 29 in parallel, the switch setting of circulating pump is in the outside of crude acid reagent bottle 1, and the wire that is located crude acid reagent bottle 1 all passes through anti-corrosion and handles, if the condition that needs pass the lateral wall that crude acid reagent bottle 1 with the wire and stretch out the outside appears, then stretch out the wire from the top of crude acid reagent bottle 1 and do the sealing treatment in the position that stretches out, for example set up sealing washer etc..

The heating device of this embodiment is PTC heater, compares traditional electric heating wire, and PCT heater adopts semiconductor heating material, has not reddish, the characteristics of no open fire, avoids the conflagration to take place.

The support is provided with a communication module, and the heating device and the liquid level controller are in communication connection with the mobile terminal through the communication module. The communication module can adopt Bluetooth or WiFi, the mobile terminal can adopt a mobile phone or a computer, and when the computer is used, the communication module can also adopt wired communication.

Example two:

the same features of this embodiment and the first embodiment are not described again, and the different features of this embodiment and the first embodiment are: as shown in fig. 9, a cooling coil 32 is provided on the outside of the condensation cover 16. The cooling coil 32 can be cooled by electric energy, or by a refrigerant cycle, such as a communication cycle tank. The cooling coil 32 accelerates the condensation of the acid vapor, improving the purification efficiency.

The top plate 3 may be provided with a movable structure capable of moving up and down, and fastening bolts may be provided for positioning thereof, so as to facilitate the assembly of the entire apparatus, the opening of the condensation cover 16, and the like. The top end of the crude acid reagent bottle 1 is open, the bottle mouth 27 of the crude acid reagent bottle 1 is covered by the condensation cover 16 so as to realize the communication between the crude acid reagent bottle 1 and the condensation cover 16, crude acid to be purified can be added into the crude acid reagent bottle 1 after the condensation cover 16 is opened, and the condensation cover 16 is reset after the addition of the acid is finished; in addition, a liquid adding port for adding crude acid can be independently arranged on the crude acid reagent bottle 1, and if the liquid adding port is arranged outside the condensation cover 16, a sealing plug is arranged at the liquid adding port.

In this embodiment, the connecting rod, the pressure balance tube 7 and other parts penetrating through the condensation cover are arranged in the gap between the cooling coils.

When the acid purification device is used, the heating temperature of the heating device is set according to the type of the acid to be purified, the temperature is set to be too low, the evaporation speed of the acid is greatly reduced, and even the evaporation speed is slowed to an intolerable degree (5-10 mL/Hour); when the temperature is set to be too high, the acid will boil and even decompose, so that the purity of the acid is greatly reduced and the desired speed is not reached. Generally, the temperature for purifying the acid is preferably set to be 5-8 ℃ lower than the boiling point, so that the quality of the acid can be ensured, and the higher purification efficiency can be obtained.

The crude acid solution is heated and evaporated, acid vapor rises to be condensed into pure acid through the condensation cover 16 and the condenser 10, the purity of the obtained condensed acid is not high at the initial stage of purification, at the moment, the pure acid conveying pipe 14 is adjusted to be closed through the three-way valve 18, the reflux hole 25 is opened through the valve, the first acid collecting tank 17 is communicated with the condensation cover 16 through the reflux pipe 19, the second acid collecting tank 22 is communicated with the crude acid reagent bottle 1 through the reflux hole 25, the part of the condensed acid is firstly purified repeatedly in a reflux manner, after the condensed acid obtained by the stable operation of the system meets the purity requirement, the reflux pipe 19 is adjusted to be closed through the three-way valve 18, the pure acid conveying pipe 14 is communicated, the reflux hole 25 is closed through the valve, the pure acid accumulated in the first acid collecting tank 17 enters the pure acid reagent bottle 2 through the pure acid conveying pipe 14, the pure acid accumulated in the second acid collecting tank 22 enters the pure acid reagent bottle 2 through the outer, the quality of the pure acid obtained in the pure acid reagent bottle 2 is improved. When the liquid level of the crude acid reagent bottle 1 is lower than the set value or the liquid level of the pure acid reagent bottle 2 is higher than the set value, the heating device 29 stops working, and whether the heating device 29 works or not can be controlled manually.

In the boiling state, the surface of the acid liquid is overturned, a large amount of liquid drops are brought into an upper space by bubbles and are condensed and collected, and metal impurities are also brought into the collecting liquid along with the liquid drops, so that the purity of the collecting liquid is reduced. Under the sub-boiling state, the surface of the acid liquid is flat, no liquid can be seen to tumble, the acid is converted into a gaseous state from a liquid state, no liquid drop is formed, no bubble can be generated, the metal impurities can only be lambkin to be placed in the acid liquid and cannot be discharged along with the liquid drop, the gaseous acid is condensed and collected, and the purity is improved by hundreds of times. Therefore, the distillation purifier for the sub-boiling acid is suitable for purifying acid solution and can well meet the requirements of laboratories.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.

Claims (6)

1. A distillation purifier for sub-boiling acid comprises a crude acid reagent bottle for containing a crude acid solution to be purified and a pure acid reagent bottle for containing a purified pure acid solution, and is characterized in that the crude acid reagent bottle is provided with a heating device with adjustable temperature, the upper part of the crude acid reagent bottle is communicated with a condensation cover, and a condenser is arranged above the condensation cover; the condensation cavity of the condenser is respectively communicated with a condensation cover and a pure acid reagent bottle, a negative pressure interface is further arranged on the condensation cavity, the negative pressure interface is connected with a negative pressure device through a negative pressure pipe, the bottom end of the condensation cover is communicated with the pure acid reagent bottle through an air pressure balancing pipe, and the bottom end of the condensation cavity is communicated with the pure acid reagent bottle through a pure acid conveying pipe;

the air pressure balance pipe comprises an inner pipe and an outer pipe, the inner pipe is sleeved inside the outer pipe, the length of the inner pipe is larger than that of the outer pipe, the inner pipe extends to the inside of the condensation cover, and the outer pipe is communicated with the side wall of the condensation cover;

a second acid collecting groove is formed in the bottom end of the condensation cover, and the second acid collecting groove is in an annular shape communicated end to end along the inner surface of the side wall of the condensation cover; the outer pipe is communicated to the side wall of the second acid collecting groove, and the inner pipe extends to the central hole of the second acid collecting groove; a backflow hole is formed at the lowest point of the second acid collecting tank, and a valve for controlling the backflow hole to be opened and closed is arranged at the backflow hole;

the bottom of condensation cavity is provided with the first acid gathering groove of annular, and the minimum in first acid gathering groove is provided with first pure acid export, pure acid delivery pipe is through first pure acid export and condensation cavity intercommunication, and the one end that pure acid delivery pipe is close to first pure acid export is provided with the back flow, and the back flow is connected between pure acid delivery pipe and condensation cover, and the intercommunication department of back flow and pure acid delivery pipe is provided with the three-way valve and realizes the switch-on and the disconnection of back flow and pure acid delivery pipe through the switching of three-way valve.

2. The sub-boiling acid distillation purifier as claimed in claim 1, wherein the valve comprises a shaped baffle and a valve handle, the shaped baffle is located at the return hole, the valve handle is located outside the condensation cover, the shaped baffle and the valve handle are connected through a connecting rod, and the connecting rod penetrates through the side wall of the condensation cover to form a sealing fit with the condensation cover.

3. The sub-boiling acid distillation purifier as claimed in claim 1, wherein the bottom edge of the condensation cover is provided with a clamping strip, the top surface of the crude acid reagent bottle is provided with a clamping groove matched with the clamping strip, the surface of the clamping strip and the inside of the clamping groove are both provided with elastic sealing elements, and the top surface of the crude acid reagent bottle is provided with a bottle opening covered by the condensation cover.

4. The distillation purifier for sub-boiling acid as claimed in claim 1, wherein the crude acid reagent bottle and the pure acid reagent bottle are respectively provided with a liquid level controller, and the liquid level controllers are connected with an operating switch of the heating device, so that the heating device stops operating when the liquid level of the crude acid reagent bottle is lower than a set value or the liquid level of the pure acid reagent bottle is higher than the set value.

5. The distillation purifier for sub-boiling acid as claimed in claim 1, wherein the bottom and the side wall of the crude acid reagent bottle are in contact with the heat generating component of the heating device, and the crude acid reagent bottle is provided with a circulating pump which pumps the crude acid solution and makes the solution flow down along the inner surface of the side wall of the crude acid reagent bottle.

6. The sub-boiling acid distillation purifier of claim 4, wherein a cooling coil is disposed outside the condensation cover; the liquid level controller is a non-contact liquid level sensor; the heating device is a PTC heater.

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