CN214681412U

CN214681412U - Micro-mixing device for preparing sulfur-phosphorus mixed acid for water quality detection

Info

Publication number: CN214681412U
Application number: CN202120149878.7U
Authority: CN
Inventors: 田菊梅; 邢雅琴; 米江; 段斌; 方向阳; 张静旖; 张晖
Original assignee: Ningxia Academy Of Metrology & Quality Inspection
Current assignee: Ningxia Academy Of Metrology & Quality Inspection
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-11-12
Anticipated expiration: 2031-01-20

Abstract

The utility model belongs to the technical field of water quality testing, and provides a micro-mixing device for preparing sulfur-phosphorus mixed acid for water quality testing, which comprises a micro-mixer, wherein a sulfuric acid inlet pipe is arranged at the top of the micro-mixer, a water inlet pipe is fixed above one side of the micro-mixer, one end of the water inlet pipe, which is far away from the micro-mixer, is provided with a second connecting pipe, one end of the second connecting pipe, which is far away from the water inlet pipe, is connected with a water metering pump, the utility model can mix trace sulfuric acid with water through the matching of structures of the sulfuric acid metering pump, the micro-mixer and the like, further a large amount of heat accumulation can not be generated, meanwhile, the sulfuric acid and the water can be sufficiently mixed, liquid-liquid two-phase materials can be sheared and mixed at high speed through the matching of a high-speed homogenizing machine and a phosphoric acid metering pump, the quality uniformity of the mixed acid can be realized, and the material proportion can be accurately controlled, the risk of exothermic reactions is reduced.

Description

Micro-mixing device for preparing sulfur-phosphorus mixed acid for water quality detection

Technical Field

The utility model relates to a water quality testing technical field, in particular to little mixing arrangement of sulfur and phosphorus mixed acid for preparation water quality testing.

Background

Water is a source of life, people can not break water in life and production activities, the quality of life drinking water is closely related to the health of people, along with the development of social economy, scientific progress and improvement of the living standard of people, the requirement of people on the quality of life drinking water is continuously improved, the standard of the quality of drinking water is correspondingly continuously developed and perfected, the water quality standard comprises physical indexes, chemical indexes and microbial indexes, and whether the product quality is influenced or containers and pipelines are easily damaged is considered for industrial water.

Mixed acid is usually used in water quality detection projects, for example, hexavalent chromium in water is detected, mixed acid sulfur and phosphorus is needed to be used, 150mL of concentrated H2SO4 (98%) is slowly added into 700mL of water for preparing mixed acid sulfur and phosphorus, after cooling, 150mLH3PO4 is added and mixed uniformly, but the preparation of mixed acid is usually dangerous, along with violent heat release, the experiment personnel can be injured by careless operation, SO that the material proportion can be accurately controlled, the heat release reaction risk is reduced, and a device capable of preparing mixed acid at any time is particularly important.

Disclosure of Invention

The utility model provides a little mixing arrangement of sulfur and phosphorus mixed acid for water quality testing to it is dangerous great to solve the mixed acid preparation that proposes in the above-mentioned background art, and unable accurate control's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a micro-mixing device for preparing sulfur-phosphorus mixed acid for water quality detection comprises a micro-mixer, a sulfuric acid inlet pipe is installed at the top of the micro-mixer, a water inlet pipe is fixed above one side of the micro-mixer, a second connecting pipe is installed at one end, far away from the micro-mixer, of the water inlet pipe, a water metering pump is connected to one end, far away from the water inlet pipe, of the second connecting pipe, a first connecting pipe is installed at one end, far away from the micro-mixer, of the sulfuric acid inlet pipe, a sulfuric acid metering pump is fixed to one end, far away from the sulfuric acid inlet pipe, of the first connecting pipe, a micro-channel is arranged inside the micro-mixer, a mixed acid outlet pipe is installed below one side, far away from the water inlet pipe, of the micro-mixer, one end, far away from the micro-mixer, of the mixed acid outlet pipe is connected with a third connecting pipe, and a high-speed homogenizing machine is installed at one end, far away from the mixed acid outlet pipe, of the third connecting pipe, and a discharge pipe is fixed on one side of the high-speed homogenizing machine, a fourth connecting pipe is installed on one side, close to the third connecting pipe, of the top of the high-speed homogenizing machine, and a phosphoric acid metering pump is installed at one end, far away from the high-speed homogenizing machine, of the fourth connecting pipe.

Preferably, cavity grooves are formed in the four ends of the top of the micro mixer, springs are mounted inside the cavity grooves, and one ends, extending to the outside of the cavity grooves, of the springs are connected with protection plates.

Preferably, the base is installed at the bottom of the micro mixer, and a groove is formed in the middle of the bottom of the base.

Preferably, the protection plate is L-shaped, and the number of the protection plates is four.

Preferably, the bottom end of the base is provided with a rubber pad, and the bottom of the rubber pad is provided with an anti-skid groove.

Preferably, a support block is installed at the bottom of the high-speed homogenizing machine, and a valve is connected to the end of the discharge pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a cooperation of sulphuric acid measuring pump and micromixer isotructure can make micro-sulphuric acid and water mix, and then can not produce a large amount of heat accumulation, and sulphuric acid and enough abundant mixing of hydroenergy can be accomplished to the form of continuous flow simultaneously, through the cooperation of high-speed homogenizer and phosphoric acid measuring pump, can cut the double-phase material of liquid at a high speed and mixing for the homogeneity of quality can be accomplished to the mixed acid, and then can the accurate control material proportion, the exothermic reaction risk has been reduced.

(2) The utility model discloses a guard plate can wrap up the protection to the top end angle of micro mixer to the end angle collision damage of micro mixer when preventing to transport to remove, through the cooperation of spring and chamber groove, the collision dynamics that can step forward reduces, thereby prevents that its inside pipe wall vibrations from damaging, has improved the security greatly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the micro mixer of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

wherein, 1, a protective plate; 2. a sulfuric acid inlet pipe; 3. a first connecting pipe; 4. a sulfuric acid metering pump; 5. a water metering pump; 6. a second connecting pipe; 7. a water inlet pipe; 8. a micro mixer; 9. a base; 10. a microchannel; 11. a mixed acid outlet pipe; 12. a third connecting pipe; 13. a high speed homogenizer; 14. a discharge pipe; 15. a fourth connecting pipe; 16. a phosphoric acid metering pump; 17. a spring; 18. a cavity groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a micro-mixing device for preparing mixed sulfuric and phosphoric acid for water quality detection comprises a micro-mixer 8, wherein the micro-mixer 8 is an SV-M static micro-mixer made of acid corrosion resistant material, a sulfuric acid inlet pipe 2 is installed at the top of the micro-mixer 8, a water inlet pipe 7 is fixed above one side of the micro-mixer 8, a second connecting pipe 6 is installed at one end of the water inlet pipe 7 far away from the micro-mixer 8, a water metering pump 5 is connected to one end of the second connecting pipe 6 far away from the water inlet pipe 7, a first connecting pipe 3 is installed at one end of the sulfuric acid inlet pipe 2 far away from the micro-mixer 8, a sulfuric acid metering pump 4 is fixed at one end of the first connecting pipe 3 far away from the sulfuric acid inlet pipe 2, the sulfuric acid metering pump 4, the water metering pump 5 and the phosphoric acid metering pump 16 are all acid type electromagnetic resistance diaphragm metering pumps, the flow rate is 0.05-0.1L/H, and the pressure is 10-1MPa, a micro-channel 10 is arranged in the micro-mixer 8, a mixed acid outlet pipe 11 is arranged below one side of the micro-mixer 8 far away from the water inlet pipe 7, one end of the mixed acid outlet pipe 11 far away from the micro-mixer 8 is connected with a third connecting pipe 12, one end of the third connecting pipe 12 far away from the mixed acid outlet pipe 11 is provided with a high-speed homogenizing machine 13, the rotating speed of a motor on the high-speed homogenizing machine 13 is 12000r/mi n, one side of the high-speed homogenizing machine 13 is fixedly provided with a discharging pipe 14, one side of the top of the high-speed homogenizing machine 13 close to the third connecting pipe 12 is provided with a fourth connecting pipe 15, one end of the fourth connecting pipe 15 far away from the high-speed homogenizing machine 13 is provided with a phosphoric acid metering pump 16, when in use, sulfuric acid can enter the first connecting pipe 3 through a sulfuric acid metering pump 4 and then enter the micro-mixer 8 through a sulfuric acid inlet pipe 2, and water can enter the second connecting pipe 6 through the water metering pump 5, then in water inlet pipe 7 gets into micromixer 8, microchannel 10 pipe diameter in the micromixer 8 is only micron order or millimeter level, thereby can make micro sulphuric acid and water mix, and then can not produce a large amount of heat accumulation, avoid taking place danger, sulphuric acid and hydroenergy can be fully mixed to the form of continuous flow simultaneously, later the miscella entering high-speed homogenizer 13 in, phosphoric acid also gets into high-speed homogenizer 13 through phosphoric acid metering pump 16 in, thereby can cut and the mixing with the high-speed of liquid-liquid two-phase material, make the homogeneity of quality can be accomplished to the miscella, and then can the accurate control material proportion, the exothermic reaction risk has been reduced, can prepare the miscella at any time.

Further, chamber groove 18 has all been seted up at four ends in the top of micromixer 8, the internally mounted of chamber groove 18 has spring 17, spring 17 extends to the outside one end of chamber groove 18 and is connected with guard plate 1, can wrap up the protection to the top end angle of micromixer 8 through guard plate 1, thereby the end angle collision damage of micromixer 8 when preventing the transportation removal, simultaneously under the cooperation of spring 17 and chamber groove 18, can further reduce the collision dynamics, thereby prevent that the inside pipe wall of micromixer 8 from shaking and damaging, and the safety is greatly improved.

Further, a base 9 is installed at the bottom of the micro mixer 8, the base 9 has a stabilizing effect, and a groove is formed in the middle of the bottom of the base 9.

Specifically, the protection plates 1 are L-shaped, and the number of the protection plates 1 is four.

Specifically, the bottom end of the base 9 is provided with a rubber pad, the rubber pad has an anti-skid function, and the bottom of the rubber pad is provided with an anti-skid groove.

Specifically, the bottom of the high-speed homogenizer 13 is provided with a support block which has the function of supporting and fixing, and the end of the discharge pipe 14 is connected with a valve.

The utility model discloses a theory of operation and use flow: the utility model discloses when using, can wrap up the protection to the top end angle of micromixer 8 through guard plate 1, thereby prevent that the end angle collision of micromixer 8 is damaged when the transportation removes, simultaneously under the cooperation of spring 17 and chamber groove 18, can further reduce the collision dynamics, thereby prevent that the inside pipe wall of micromixer 8 from shaking and damaging, when preparing the mixed acid, sulphuric acid can get into in first connecting pipe 3 through sulphuric acid measuring pump 4, then get into micromixer 8 through sulphuric acid import pipe 2, water can get into in second connecting pipe 6 through water measuring pump 5 simultaneously, then get into micromixer 8 through water 7, the microchannel 10 pipe diameter in micromixer 8 is the micron order or millimeter level only, thereby can make micro sulphuric acid mix with water, and then can not produce a large amount of heat accumulation, avoid taking place the mixing danger, the form of continuous flow can accomplish sulphuric acid and hydroenergy enough abundant simultaneously, then the mixed liquid enters the high-speed homogenizer 13, and the phosphoric acid also enters the high-speed homogenizer 13 through the phosphoric acid metering pump 16, so that liquid-liquid two-phase materials can be sheared and uniformly mixed at a high speed, the quality uniformity of the mixed acid can be realized, the material proportion can be accurately controlled, the exothermic reaction risk is reduced, and the mixed acid can be prepared at any time.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a little mixing arrangement of sulfur phosphorus mixed acid for water quality testing which characterized in that: the device comprises a micro mixer (8), a sulfuric acid inlet pipe (2) is installed at the top of the micro mixer (8), a water inlet pipe (7) is fixed above one side of the micro mixer (8), a second connecting pipe (6) is installed at one end, far away from the micro mixer (8), of the water inlet pipe (7), a water metering pump (5) is connected to one end, far away from the micro mixer (8), of the sulfuric acid inlet pipe (2) of the water inlet pipe (3), a sulfuric acid metering pump (4) is fixed to one end, far away from the sulfuric acid inlet pipe (2), of the sulfuric acid inlet pipe (3) of the sulfuric acid inlet pipe (4), a micro channel (10) is formed inside the micro mixer (8), a mixed acid outlet pipe (11) is installed below one side, far away from the water inlet pipe (7), of the mixed acid outlet pipe (11) of the micro mixer (8) of the mixed acid outlet pipe (11) of the sulfuric acid inlet pipe is connected with a third connecting pipe (12), the high-speed homogenizing machine (13) is installed at one end, far away from the mixed acid outlet pipe (11), of the third connecting pipe (12), a discharging pipe (14) is fixed to one side of the high-speed homogenizing machine (13), a fourth connecting pipe (15) is installed at one side, close to the third connecting pipe (12), of the top of the high-speed homogenizing machine (13), and a phosphoric acid metering pump (16) is installed at one end, far away from the high-speed homogenizing machine (13), of the fourth connecting pipe (15).

2. The micro-mixing device for preparing mixed phosphoric and sulfuric acid for water quality detection as claimed in claim 1, wherein: cavity groove (18) have all been seted up at four ends in the top of micromixer (8), the internally mounted of cavity groove (18) has spring (17), spring (17) extend to the outside one end in cavity groove (18) and are connected with guard plate (1).

3. The micro-mixing device for preparing mixed phosphoric and sulfuric acid for water quality detection as claimed in claim 1, wherein: a base (9) is installed at the bottom of the micro mixer (8), and a groove is formed in the middle of the bottom of the base (9).

4. The micro-mixing device for preparing mixed phosphoric and sulfuric acid for water quality detection as claimed in claim 2, characterized in that: the protection plate (1) is L-shaped, and the number of the protection plates (1) is four.

5. The micro-mixing device for preparing mixed phosphoric and sulfuric acid for water quality detection as claimed in claim 3, wherein: the bottom of the base (9) is provided with a rubber pad, and the bottom of the rubber pad is provided with an anti-skid groove.

6. The micro-mixing device for preparing mixed phosphoric and sulfuric acid for water quality detection as claimed in claim 1, wherein: the bottom of the high-speed homogenizing machine (13) is provided with a support block, and the end part of the discharge pipe (14) is connected with a valve.