Hydrochloric acid collecting device of nitrogen blowing concentrator

Abstract

The utility model relates to a hydrochloric acid collecting device of a nitrogen blowing instrument, and relates to the field of nitrogen blowing instruments. The nitrogen blowing instrument comprises a nitrogen blowing instrument body, a protection cover and a recovery part, a screw plate is vertically fixed to the top face of the nitrogen blowing instrument body, the protection cover is vertically arranged on the screw plate, internal threads are formed in the upper side and the lower side of the inner wall of the protection cover, the bottom end of the protection cover is assembled on the screw plate, and a screw cap is assembled on the top of the protection cover in a threaded fit mode. And the recycling part comprises a recycling barrel, the recycling barrel is vertically fixed to one side of the outer portion of the protection cover, a spiral pipe is vertically inserted into the recycling barrel in a penetrating mode, and an air guide pipe is fixedly communicated to the top end of the spiral pipe. When the nitrogen blowing instrument is used for blowing, an evaporated solvent contains hydrochloric acid, and hydrochloric acid steam is recovered through the recovery part under the protection of the protection cover, so that the situation that the steam containing hydrochloric acid is directly blown into the atmosphere to cause pollution and is not beneficial to environmental protection and personal safety of experimenters is avoided, and the use safety of the nitrogen blowing instrument body is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of nitrogen blowdown apparatuses, and in particular to a hydrochloric acid collection device for nitrogen blowdown apparatuses. Background Art

[0002] A nitrogen blowdown apparatus is a laboratory device used to concentrate solvents in samples. It is typically used to reduce or remove solvents from liquid samples without damaging the sample itself. The nitrogen blowdown apparatus accelerates the evaporation of the solvent by blowing a stream of nitrogen over the sample, thereby achieving the purpose of concentration. When the nitrogen blowdown apparatus processes samples containing hydrochloric acid, the evaporated solvent contains hydrochloric acid, which is highly corrosive and volatile and needs to be collected and processed regularly.

[0003] The existing announcement number is CN204255746U, and the name is a nitrogen blowing instrument, which includes a base, a cover, a support frame, an air inlet connecting pipe, a guide pipe back plate and a blow needle. The base is provided with a sample seat hole, and the blow needle corresponds to the sample seat hole one by one. A control circuit board is provided in the base, and it also includes an air inlet connecting pipe, a gas mass flow meter, a branch guide pipe, a gas distribution device and a preheating system; the output end of the air inlet connecting pipe is connected to the gas distribution device, and the gas distribution device is arranged in the middle of the guide pipe back plate. Several air supply channels connected to the branch guide pipes are provided on the guide pipe back plate. The mass flow meter is correspondingly arranged at the air supply channel; the preheating system includes a heating plate and a stainless steel plate. The heating plate is a double-sided heating type. The heating plate on the heating plate is connected to the control circuit board circuit. The front of the heating plate corresponds to the bottom of the sample seat hole, and the back corresponds to the stainless steel plate. A groove is provided on the side of the stainless steel plate opposite to the heating plate. The air intake connecting pipe is clamped on the groove, and the air supply is more uniform. The intermediate air supply method is adopted to solve the problem of gas uniformity, facilitate comparative test observation of samples from the same batch, and also improve the efficiency of the test.

[0004] Regarding the above-mentioned related technologies, the inventors found that when the sample concentrated by the nitrogen blowdown instrument is a hydrochloric acid reagent, hydrochloric acid is volatile and the volatilized hydrochloric acid is harmful to the human body. The above-mentioned nitrogen blowdown instruments are all open and lack a closed structure for recovering the evaporated solvent. The evaporated solvent during the blowdown contains hydrochloric acid, which is directly blown into the atmosphere, causing pollution, which is not conducive to environmental protection and the personal safety of the experimenters. Utility Model Content

[0005] In order to overcome the situation that existing nitrogen blowdown instruments are all open and lack a closed structure for recovering evaporated solvents, the evaporated solvent during the blowdown contains hydrochloric acid, which is directly blown into the atmosphere and causes pollution, which is not conducive to environmental protection and the personal safety of experimenters, the present application provides a hydrochloric acid collection device for a nitrogen blowdown instrument.

[0006] The hydrochloric acid collection device of the nitrogen blowdown apparatus provided in this application adopts the following technical solution:

[0007] A hydrochloric acid collection device for a nitrogen blowdown instrument comprises a nitrogen blowdown instrument body, a protective cover and a recovery component, wherein a screw plate is vertically fixed on the top surface of the nitrogen blowdown instrument body, and a protective cover is vertically arranged on the screw plate, internal threads are provided on the upper and lower sides of the inner wall of the protective cover, and the bottom end of the protective cover is assembled on the screw plate, the top thread of the protective cover cooperates with the internal thread to assemble a screw cap, and the bottom of the outer circumferential surface of the protective cover is horizontally connected and fixed with an exhaust spiral tube, the recovery component comprises a recovery cylinder, the recovery cylinder is vertically fixed to one side of the outside of the protective cover, and a spiral tube is vertically inserted through the recovery cylinder, the top end of the spiral tube is connected and fixed with an air guide tube, and the other end of the air guide tube is connected and assembled on the exhaust spiral tube, and the bottom end of the spiral tube is connected to a detachable recovery tank.

[0008] By adopting the above technical solution, during use, the bottom thread of the protective cover is assembled on the top screw plate of the nitrogen blowdown instrument body, and then the screw cover thread is assembled on the top of the protective cover, and then the screw barrel thread at one end of the air guide tube on the recovery part is assembled on the exhaust spiral tube, and the liquid inlet pipe and the liquid discharge pipe at the upper and lower ends of the recovery tube are connected to the water supply pipe, and the water flow is guided into the recovery tube. The steam containing hydrochloric acid generated by the nitrogen blowdown instrument body is introduced into the spiral tube from the air guide tube, and the heat of the steam contacts the wall of the spiral tube and is carried away by the water in the recovery tube, so that the steam containing hydrochloric acid condenses in the spiral tube and flows downward into the recovery tank. Therefore, the solvent evaporated during the purging of the nitrogen blowdown instrument contains hydrochloric acid, which is protected by the protective cover, and the hydrochloric acid vapor is recovered by the recovery part, so as to avoid the steam containing hydrochloric acid being directly blown into the atmosphere to cause pollution, which is not conducive to environmental protection and the personal safety of the experimenters, thereby ensuring the safety of the use of the nitrogen blowdown instrument body.

[0009] Optionally, a plurality of heat-conducting rings are horizontally arranged on the circumferential wall of the recovery cylinder along the vertical direction, and the plurality of heat-conducting rings pass through the inner wall of the recovery cylinder and are fixed on the recovery cylinder.

[0010] By adopting the above technical solution, multiple heat-conducting rings are arranged on the recovery tube, which increases the contact area between the recovery tube and the external air. The contact water accelerates the heat transfer to the outside, ensuring the condensation effect of the steam containing hydrochloric acid.

[0011] Optionally, a liquid inlet pipe is vertically connected and fixed on the top surface of the recovery cylinder, and a liquid discharge pipe is vertically connected and fixed on the bottom surface of the recovery cylinder.

[0012] By adopting the above technical solution, the liquid inlet pipe and the liquid discharge pipe at the upper and lower ends of the recovery drum are connected to the water supply pipe, and the water flow is guided into the recovery drum. The steam containing hydrochloric acid generated by the nitrogen blowdown instrument body is introduced into the spiral tube from the air guide pipe. The heat of the steam contacts the wall of the spiral tube and is carried away by the water in the recovery drum.

[0013] Optionally, one end of the air guide tube is connected to and fixed with a screw barrel, and the screw barrel is threadedly assembled on the exhaust spiral tube, and an air pump is connected and assembled on the air guide tube.

[0014] By adopting the above technical solution, the spiral barrel at one end of the air guide pipe is threadedly assembled on the exhaust spiral pipe to guide the steam containing hydrochloric acid into the spiral pipe for condensation recovery.

[0015] Optionally, an air inlet pipe is vertically connected and fixed to the middle of the screw cover, and a plurality of blow needles are vertically fixed to the bottom end of the air inlet pipe.

[0016] By adopting the above technical solution, the air inlet pipe on the screw cover is connected to the external nitrogen gas supply pipe, and the hydrochloric acid solvent is evaporated by multiple blowing needles.

[0017] Optionally, the top end of the recovery tank is opened, and a screw ring is vertically connected and fixed at the open end of the recovery tank.

[0018] By adopting the above technical solution, the spiral ring connected to the top of the recovery tank is used to be threadedly assembled on the bottom end of the spiral tube to receive the condensed hydrochloric acid solvent.

[0019] Optionally, the bottom end of the spiral tube is connected to and fixed with a spiral shell cover, and the spiral shell cover is threadedly assembled in the spiral ring.

[0020] By adopting the above technical solution, the spiral shell cover at the bottom end of the spiral tube is connected and assembled with the spiral ring, and the thread is assembled at the bottom end of the spiral tube to receive the condensed hydrochloric acid solvent, and the condensed hydrochloric acid solvent in the recovery tank is split and dumped.

[0021] Optionally, a fan plate is vertically fixed on the outer wall of the recovery cylinder, and a plurality of cooling fans are fixed through the fan plate.

[0022] By adopting the above technical solution, in order to speed up the heat dissipation on the recovery tank, multiple cooling fans on the fan board are started to speed up the air flow rate on the outer wall of the recovery tank, thereby increasing the heat dissipation efficiency on the recovery tank.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: during use, the bottom thread of the protective cover is assembled on the top screw plate of the nitrogen blowdown instrument body, and then the screw cover thread is assembled on the top of the protective cover, and then the screw barrel thread at one end of the air guide tube on the recovery part is assembled on the exhaust spiral tube, and the liquid inlet pipe and the liquid discharge pipe at the upper and lower ends of the recovery tube are connected to the water supply pipe to guide the water flow into the recovery tube. The steam containing hydrochloric acid generated by the nitrogen blowdown instrument body is introduced into the spiral tube from the air guide tube. The heat of the steam contacts the wall of the spiral tube and is carried away by the water in the recovery tube, so that the steam containing hydrochloric acid condenses in the spiral tube and flows downward into the recovery tank. Therefore, the solvent evaporated during the purging of the nitrogen blowdown instrument contains hydrochloric acid, which is protected by the protective cover, and the hydrochloric acid vapor is recovered by the recovery part, so as to avoid the steam containing hydrochloric acid being directly blown into the atmosphere to cause pollution, which is not conducive to environmental protection and the personal safety of the experimenters, and ensures the safety of the use of the nitrogen blowdown instrument body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 This is a schematic diagram of the structure of the embodiment of the present application in an exploded state;

[0026] Figure 3 This is a schematic structural diagram of the protective cover in the disassembled state according to an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the structure of the recycling part in the embodiment of the present application in a decomposed state;

[0028] Figure 5 It is a structural schematic diagram of the nitrogen blowdown instrument body in the embodiment of the present application in a disassembled state.

[0029] Explanation of the accompanying symbols: 1. Nitrogen blowdown instrument body; 11. Screw plate; 2. Protective cover; 21. Screw cover; 22. Air inlet pipe; 23. Blow needle; 24. Exhaust spiral pipe; 3. Recovery part; 31. Recovery cylinder; 311. Heat conduction ring; 312. Liquid inlet pipe; 313. Liquid discharge pipe; 32. Air guide pipe; 321. Screw barrel; 33. Spiral tube; 34. Air pump; 35. Screw shell cover; 36. Recovery tank; 361. Screw ring; 37. Fan plate; 38. Cooling fan. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] The embodiment of the present application discloses a hydrochloric acid collection device for a nitrogen blowdown instrument. Figure 1 、 Figure 2 . Figure 3 and Figure 4 , a hydrochloric acid collection device for a nitrogen blowdown instrument, comprising a nitrogen blowdown instrument body 1, a protective cover 2 and a recovery component 3. A screw plate 11 is vertically fixed on the top surface of the nitrogen blowdown instrument body 1, and a protective cover 2 is vertically arranged on the screw plate 11. The inner wall of the protective cover 2 is provided with internal threads on both sides, and the bottom end of the protective cover 2 is assembled on the screw plate 11. The top thread of the protective cover 2 is matched with the internal thread to assemble a screw cover 21, and the bottom of the outer circumference of the protective cover 2 is horizontally connected and fixed with an exhaust spiral tube 24. The recovery component 3 includes a recovery cylinder 31, the recovery cylinder 31 is vertically fixed to one side of the outside of the protective cover 2, and a spiral tube 33 is vertically inserted into the recovery cylinder 31, the top end of the spiral tube 33 is connected and fixed with an air guide pipe 32, and the other end of the air guide pipe 32 is connected and assembled on the exhaust spiral tube 24, and the bottom end of the spiral tube 33 is connected to a detachable recovery tank 36.

[0032] By adopting the above technical scheme, during use, the bottom thread of the protective cover 2 is assembled on the top surface screw plate 11 of the nitrogen blowing instrument body 1, and then the screw cover 21 is threadedly assembled on the top of the protective cover 2, and then the screw barrel 321 at one end of the air guide pipe 32 on the recovery part 3 is threadedly assembled on the exhaust spiral pipe 24, and the liquid inlet pipe 312 and the discharge pipe 313 at the upper and lower ends of the recovery cylinder 31 are connected to the water supply pipe, and the water flow is guided into the recovery cylinder 31. The steam containing hydrochloric acid generated by the nitrogen blowing instrument body 1 is introduced into the spiral tube 33 from the air guide pipe 32, and the heat of the steam contacts the wall of the spiral tube 33 and is carried and removed by the water in the recovery cylinder 31, so that the steam containing hydrochloric acid condenses in the spiral tube 33 and flows downward into the recovery tank 36, so that the solvent evaporated during the purge of the nitrogen blowing instrument contains hydrochloric acid, which is protected by the protective cover 2, and the hydrochloric acid steam is recovered by the recovery part 3, so as to avoid the steam containing hydrochloric acid being directly blown into the atmosphere to cause pollution, which is not conducive to environmental protection and the personal safety of the experimenters, thereby ensuring the safety of the use of the nitrogen blowing instrument body 1.

[0033] Reference Figure 3 and Figure 4 Multiple heat-conducting rings 311 are vertically arranged horizontally on the circumferential wall of the recovery drum 31. These rings 311 penetrate the inner wall of the recovery drum 31 and are fixed to the recovery drum 31. The multiple heat-conducting rings 311 on the recovery drum 31 increase the contact area between the recovery drum 31 and the external air. The contact with the flowing water accelerates heat transfer outward, ensuring the condensation of the hydrochloric acid vapor.

[0034] Reference Figure 3 and Figure 4 A liquid inlet pipe 312 is vertically connected and fixed to the top surface of the recovery drum 31, and a liquid discharge pipe 313 is vertically connected and fixed to the bottom surface of the recovery drum 31. The liquid inlet pipe 312 and liquid discharge pipe 313 at the upper and lower ends of the recovery drum 31 are connected to the water supply pipe, directing water flow into the recovery drum 31. The steam containing hydrochloric acid generated by the nitrogen blowdown instrument body 1 is guided from the air guide pipe 32 into the spiral tube 33. The heat of the steam contacts the wall of the spiral tube 33 and is carried away by the water in the recovery drum 31.

[0035] Reference Figure 3 and Figure 4 One end of the air guide tube 32 is connected and fixed with a screw barrel 321, and the screw barrel 321 is threadedly assembled on the exhaust spiral tube 24, and the air guide tube 32 is connected and assembled with an air pump 34. The screw barrel 321 at one end of the air guide tube 32 is threadedly assembled on the exhaust spiral tube 24, and is used to guide the steam containing hydrochloric acid into the spiral tube 33 for condensation and recovery. The middle part of the screw cover 21 is vertically connected and fixed with an air inlet pipe 22, and the bottom end of the air inlet pipe 22 is vertically penetrated and fixed with multiple blow needles 23. The air inlet pipe 22 on the screw cover 21 is connected to the external nitrogen gas supply pipe, and the hydrochloric acid solvent is evaporated through the multiple blow needles 23.

[0036] Reference Figure 4The top of the recovery tank 36 is open, and a spiral ring 361 is vertically connected and fixed at the open end of the recovery tank 36. The spiral ring 361 connected to the top of the recovery tank 36 is used to be threadedly assembled on the bottom end of the spiral tube 33 to receive the condensed hydrochloric acid solvent. The bottom end of the spiral tube 33 is connected and fixed with a spiral shell cover 35, and the spiral shell cover 35 is threadedly assembled in the spiral ring 361. The spiral shell cover 35 at the bottom end of the spiral tube 33 is connected and assembled with the spiral ring 361, and is threadedly assembled on the bottom end of the spiral tube 33 to receive the condensed hydrochloric acid solvent, and the condensed hydrochloric acid solvent in the recovery tank 36 is separated and dumped.

[0037] Reference Figure 4 A fan plate 37 is vertically fixed to the outer wall of the recovery cylinder 31, and multiple cooling fans 38 are fixed through the fan plate 37. In order to accelerate the heat dissipation of the recovery tank 36, the multiple cooling fans 38 on the fan plate 37 are turned on to speed up the air flow rate of the outer wall of the recovery tank 36, thereby increasing the heat dissipation efficiency of the recovery tank 36.

[0038] The implementation principle of the hydrochloric acid collection device of the nitrogen blowdown instrument in the embodiment of the present application is: during use, the bottom thread of the protective cover 2 is assembled on the top screw plate 11 of the nitrogen blowdown instrument body 1, and then the screw cover 21 is assembled on the top of the protective cover 2, and then the screw barrel 321 at one end of the air guide tube 32 on the recovery part 3 is assembled on the exhaust spiral tube 24, and the liquid inlet pipe 312 and the liquid discharge pipe 313 at the upper and lower ends of the recovery tube 31 are connected to the water supply pipe to guide the water flow into the recovery tube 31, and the steam containing hydrochloric acid generated by the nitrogen blowdown instrument body 1 is introduced into the spiral tube 33 from the air guide pipe 32. The heat of the steam contacts the wall of the spiral tube 33 and the heat is carried away by the water in the recovery tube 31, so that the steam containing hydrochloric acid condenses in the spiral tube 33 and flows downward into the recovery tank 36.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydrochloric acid collection device for a nitrogen blowdown instrument, characterized in that: The invention comprises a nitrogen blowing instrument body (1), a protective cover (2) and a recovery part (3), wherein a screw plate (11) is vertically fixed on the top surface of the nitrogen blowing instrument body (1), and the protective cover (2) is vertically arranged on the screw plate (11), the inner wall of the protective cover (2) is provided with internal threads on both the upper and lower sides, and the bottom end of the protective cover (2) is assembled on the screw plate (11), the top thread of the protective cover (2) is matched with the internal thread to be assembled with a screw cover (21), and the bottom of the outer circumference of the protective cover (2) is horizontal. An exhaust spiral tube (24) is connected and fixed, and the recovery member (3) includes a recovery cylinder (31), the recovery cylinder (31) is vertically fixed on one side of the outside of the protective cover (2), and a spiral tube (33) is vertically inserted into the recovery cylinder (31), the top end of the spiral tube (33) is connected and fixed with an air guide tube (32), and the other end of the air guide tube (32) is connected and assembled on the exhaust spiral tube (24), and the bottom end of the spiral tube (33) is connected and assembled with a detachable recovery tank (36).

2. The hydrochloric acid collecting device of a nitrogen blowdown apparatus according to claim 1, wherein: A plurality of heat-conducting rings (311) are horizontally arranged on the circumferential wall of the recovery cylinder (31) along the vertical direction, and the plurality of heat-conducting rings (311) penetrate the inner wall of the recovery cylinder (31) and are fixed on the recovery cylinder (31).

3. The hydrochloric acid collecting device of a nitrogen blowing apparatus according to claim 2, wherein: A liquid inlet pipe (312) is vertically connected and fixed on the top surface of the recovery cylinder (31), and a liquid discharge pipe (313) is vertically connected and fixed on the bottom surface of the recovery cylinder (31).

4. The hydrochloric acid collecting device of the nitrogen blowing apparatus according to claim 3, wherein: One end of the air guide tube (32) is connected to and fixed with a screw barrel (321), and the screw barrel (321) is threadedly assembled on the exhaust screw tube (24). The air guide tube (32) is connected to and assembled with an air pump (34).

5. The hydrochloric acid collecting device of the nitrogen blowing apparatus according to claim 4, characterized in that: An air inlet pipe (22) is vertically connected and fixed to the middle of the screw cover (21), and a plurality of blow needles (23) are vertically fixed to the bottom end of the air inlet pipe (22).

6. The hydrochloric acid collecting device of the nitrogen blowing apparatus according to claim 5, characterized in that: The top end of the recovery tank (36) is open, and a screw ring (361) is vertically connected and fixed at the open end of the recovery tank (36).

7. The hydrochloric acid collecting device of the nitrogen blowing apparatus according to claim 6, wherein: The bottom end of the spiral tube (33) is connected to and fixed with a spiral shell cover (35), and the spiral shell cover (35) is threadedly assembled in the spiral ring (361).

8. The hydrochloric acid collecting device of the nitrogen blowing apparatus according to claim 7, wherein: A fan plate (37) is vertically fixed on the outer wall of the recovery cylinder (31), and a plurality of cooling fans (38) are fixed through the fan plate (37).

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