CN112462002A - Waste liquid recovery equipment for biological detector - Google Patents
Waste liquid recovery equipment for biological detector Download PDFInfo
- Publication number
- CN112462002A CN112462002A CN202011309119.9A CN202011309119A CN112462002A CN 112462002 A CN112462002 A CN 112462002A CN 202011309119 A CN202011309119 A CN 202011309119A CN 112462002 A CN112462002 A CN 112462002A
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- waste liquid
- box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses waste liquid recovery equipment for a biological detector, which comprises a treatment box, wherein a water inlet pipe and a water outlet pipe are inserted into the side wall of the treatment box in a penetrating manner, an acid-base meter is fixedly arranged at the upper end of the treatment box in a penetrating manner, an acid material box and an alkali material box are fixedly arranged at the top of the treatment box, a motor is fixedly arranged at the inner bottom of the treatment box, a rotating shaft is fixedly arranged on an output shaft of the motor, and a plurality of stirring pipes are fixedly arranged on the inner wall of the rotating shaft in a penetrating manner. Has the advantages that: through setting up the acid-base meter, the pH valve of measurement waste liquid that can be accurate, the pointer deflection of acid-base meter will make the drive pole drive the magnetic fluid and remove, and then make the electric contact of relevant position switch on, thereby make the solenoid valve of relevant position open, make corresponding treatment fluid pour into the treatment box with corresponding volume, thereby make treatment fluid obtain the neutralization treatment of corresponding degree, whole process does not need the joining and the adjustment of artificial control treatment fluid, very big liberation the manpower.
Description
Technical Field
The invention relates to the technical field of biological detection instruments, in particular to waste liquid recovery equipment for a biological detection instrument.
Background
Biological monitoring comprises three major parts of water, soil and atmospheric pollution, wherein the biological monitoring is to regularly and systematically determine the environmental quality including the water, the gas and the soil environment by utilizing the reaction information of organisms to the environment, which means that one or more environmental parameters are regularly or continuously evaluated so as to find out the pollution condition of the environment;
when monitoring specific environment, often need detect biology in the environment, provide biological active reaction information for environmental control and management through biological detection, thereby better environmental protection, many biological detection processes need to use chemical reagent, reagent will become harmful waste liquid after using, there is the difference of pH valve often, direct emission will lead to the huge pollution of environment, it recycles it after handling the waste liquid generally, and current pH valve balance processing procedure often is gone on by the manual operation, wholly need consume more manpower, holistic efficiency is lower, and excessive dependence electronic product and programming reduce the human labor, self cost will be higher, consequently need a convenient to use waste liquid treatment recovery plant that the cost is lower urgently.
Disclosure of Invention
The invention aims to solve the problem of inconvenient treatment of detection waste liquid in the prior art, and provides waste liquid recovery equipment for a biological detector.
In order to achieve the purpose, the invention adopts the following technical scheme: a waste liquid recovery device for a biological detector comprises a processing box, wherein a water inlet pipe and a water outlet pipe are inserted through the side wall of the processing box, an acid-base meter is fixedly penetrated at the upper end of the treatment box, an acid material box and an alkali material box are fixedly arranged at the top of the treatment box, a motor is fixed at the inner bottom of the treatment box, a rotating shaft is fixed on an output shaft of the motor, a plurality of stirring pipes are fixedly penetrated through the inner wall of the rotating shaft, a plurality of through holes are formed in the side wall of each stirring pipe in a penetrating way, the inner wall of the rotating shaft is rotatably connected with a rotating pipe, two symmetrically arranged concentrated pipes penetrate through and are fixed on the side wall of the rotating pipe, the bottoms of the acid feed box and the alkali feed box are respectively inserted with a plurality of proportional pipes communicated with the insides of the two concentrated pipes, the proportional tube is internally provided with an electromagnetic valve, the upper end of the acid-base meter is fixed with a control box, and a control mechanism is arranged in the control box.
In foretell waste liquid recovery equipment for biological detector, control mechanism is including seting up the control chamber on control box upper portion, a plurality of electricity connection grooves have been seted up to the inner wall in control chamber, every electricity connection groove's inner wall all is fixed with the electric piece that connects, the inner wall of control box rotates and is connected with the drive rod.
In the above waste liquid recovery apparatus for a biological detector, the driving rod is made of a permanent magnet, a magnetic fluid is filled in the control cavity, the bottom of the control cavity is inclined, and the acid-base meter is a pointer-type acid-base meter.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the pH value of the waste liquid can be accurately measured by arranging the acid-base meter, the pointer of the acid-base meter deflects to drive the driving rod to drive the magnetofluid to move, so that the electric connection piece at the corresponding position is conducted, the electromagnetic valve at the corresponding position is opened, and the corresponding treatment liquid is injected into the treatment box in a corresponding amount, so that the treatment liquid is neutralized to a corresponding degree, the whole process does not need to manually control the addition and adjustment of the treatment liquid, and the manpower is greatly liberated;
2. according to the device, the pH meter measures the pH value of the waste liquid in real time, and the pH value is fed back to the deflection of the pointer in real time, so that the magnetic fluid is driven to change the position in real time, the on-off of the electric connecting piece at the corresponding position is adjusted in real time, the adding amount of the treatment liquid is effectively adjusted in real time, the waste liquid is treated more reasonably and timely, errors and untimely due to artificial judgment are avoided, and the whole treatment efficiency and quality are improved;
3. according to the invention, the stirring pipe with a large range is arranged, so that the waste liquid can be fully stirred during primary measurement, the problem of overhigh local acidity and alkalinity of the waste liquid can be avoided, the pH value of the waste liquid can be accurately and effectively measured, the subsequent adjustment process is more convenient, and the through holes in the treatment box are uniformly distributed and distributed, so that the treatment liquid can be timely, quickly and uniformly distributed in the treatment box, the treatment process is quick and effective, the real-time measurement of an acid-base meter is effectively matched, and the treatment efficiency is improved;
4. according to the invention, the whole process does not need artificial management, the whole control process does not relate to program design, the control is completed in a mechanical rotation mode, the control method is more reliable and simpler, the whole manufacturing cost is lower, the service life is longer, excessive constraint is not made on acid-base metering, and the adaptability is stronger.
Drawings
FIG. 1 is a schematic structural view of a waste liquid recovery apparatus for a biological detector according to the present invention;
FIG. 2 is an enlarged schematic view of a control box portion of a waste liquid recovery apparatus for a biological detector according to the present invention;
FIG. 3 is a top sectional view of a control box portion of a waste liquid recovery apparatus for a biological detector according to the present invention;
fig. 4 is a sectional view taken in the direction a of fig. 3.
In the figure: 1 treating box, 2 water inlet pipe, 3 water outlet pipe, 4 acid-base meter, 5 acid-base box, 6 base-base box, 7 motor, 8 rotating shaft, 9 stirring pipe, 10 through hole, 11 rotating pipe, 12 concentrating pipe, 13 proportion pipe, 14 control box, 15 control cavity, 16 electricity-connecting groove, 17 driving rod and 18 electricity-connecting piece.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-4, a waste liquid recycling apparatus for a biological detector comprises a processing box 1, a water inlet pipe 2 and a water outlet pipe 3 are inserted into the side wall of the processing box 1, an acid-base meter 4 is fixed on the upper end of the processing box 1, an acid box 5 and an alkali box 6 are fixed on the top of the processing box 1, a motor 7 is fixed on the inner bottom of the processing box 1, a rotating shaft 8 is fixed on the output shaft of the motor 7, a plurality of stirring pipes 9 are fixed on the inner wall of the rotating shaft 8, a plurality of through holes 10 are formed on the side wall of each stirring pipe 9, a rotating pipe 11 is connected on the inner wall of the rotating shaft 8, two symmetrically arranged concentration pipes 12 are fixed on the side wall of the rotating pipe 11, a plurality of proportional pipes 13 communicated with the inside of the two concentration pipes 12 are respectively inserted on the bottom of the acid box 5 and the alkali box 6, an electromagnetic valve is arranged inside the proportional pipe 13, after the electromagnetic valve is opened, the processing liquid inside the acid box 5 and the alkali box 6 enters, the rotating pipe 11 enters the rotating shaft 8, then the stirring pipe 9 is entered, finally, the through holes 10 are uniformly injected into the treatment box 1 to complete the uniform distribution of the treatment liquid, so that the waste liquid and the treatment liquid can be mixed and neutralized faster and better, the real-time measurement of the acid-base meter 4 is more accurate, the upper end of the acid-base meter 4 is fixed with the control box 14, and the control box 14 is internally provided with a control mechanism.
The control mechanism comprises a control cavity 15 arranged on the upper portion of the control box 14, a plurality of electricity receiving grooves 16 are formed in the inner wall of the control cavity 15, electricity receiving pieces 18 are fixed on the inner wall of each electricity receiving groove 16, after the electricity receiving pieces 18 in each electricity receiving groove 16 are two and electrically connected, the corresponding electromagnetic valve is powered on and opened, and the inner wall of the control box 14 is rotatably connected with a driving rod 17.
The driving rod 17 is made of permanent magnet, the control cavity 15 is filled with magnetic fluid, the magnetic fluid is uniformly distributed right above the driving rod 17 under the action of magnetic force of the driving rod 17 and moves synchronously with the driving rod 17, the inner bottom of the low control cavity 15 is obliquely arranged, the middle of the low control cavity is low, two ends of the low control cavity are high, one end of the inner wall of the electric tank 16 is high, when the magnetic fluid flows forwards, part of the magnetic fluid is remained in the electric tank 16, when the magnetic fluid moves backwards, the magnetic fluid in the electric tank 16 is separated from the electric tank 16 under the action of magnetic force, when the magnetic fluid is positioned in the electric tank 16, the electric connecting pieces 18 on two sides are communicated through self electrical conductivity, the acid-base meter 4 is a pointer type acid-base meter, the acid-base meter is displayed through deflection of.
In the invention, when the waste liquid is subjected to acid-base treatment, the waste liquid to be treated is injected into the treatment box 1 through the water inlet pipe 2, then the acid-base meter 4 and the motor 7 are started, and the rotating shaft 8 drives each stirring pipe 9 to rotate under the drive of the motor 7, so that the basic stirring treatment is performed on the waste liquid, and the phenomenon that the integral pH value measurement is influenced by the aggregation of impurities in the waste liquid is avoided;
under the measurement of the acid-base meter 4, the acid-base meter 4 makes the deflection of the pointer according to the measured data, when the pointer of the acid-base meter 4 deflects, the driving rod 17 made of a permanent magnet is driven to deflect to a corresponding degree, so that the driving rod 17 drives the magnetic fluid in the control cavity 15 to move, the magnetic fluid moves along with the driving rod 17 under the action of magnetic force, the magnetic fluid is uniformly arranged right above the driving rod 17 under the action of magnetic force, and in the movement process of the magnetic fluid, when the magnetic fluid passes through the power-on slot 16, the magnetic fluid is sunk into the power-on slot 16, and the power-on slot 16 has a certain depth, so that when the magnetic fluid passes through, part of the magnetic fluid remains in the power-on slot 16, and the power-on tab 18 in the power-on slot 16 is conducted, the electromagnetic valve in the corresponding proportion pipe 13 is opened, so that the materials in the acid material box 5 and the base material box 6 correspondingly flow into the, finally, the treatment solution enters the treatment box 1 through the through holes 10, and the through holes 10 are uniformly distributed in the treatment box 1 due to the fact that the stirring pipes 9 are more and long, so that the treatment solution is uniformly distributed in the treatment box 1 along with the stirring of the stirring pipes 9, the neutralization speed is greatly increased, the pH value can be timely and accurately judged by the pH meter 4, and a large delay error is avoided;
the larger the pH value of the solution is, the larger the deflection degree of the pointer of the pH meter 4 is, the larger the movement range of the magnetic fluid is, the more the electric connection slots 16 are filled, and then more electromagnetic valves are electrified and conducted, so that the more treatment fluid is injected at the same time, and the whole treatment speed is improved and ensured, after the solution in the treatment box 1 is treated and the pH value is reduced, the pointer of the pH meter 4 rotates, because the middle part of the bottom in the control cavity 15 is low and the two ends are high, the moving interface of the magnetic fluid is an inclined plane, so that the inside of the electric connection slot 16 presents a state that one side is high and the other side is low, when the driving rod 17 rotates the pointer of the pH meter 4, the magnetic fluid in the electric connection slot 16 overcomes the obstruction of the inner wall at the lower side of the electric connection slot 16 under the magnetic force, so as to be separated from the electric connection slot 16, so that the electric connection piece 18, the injection speed of the corresponding treatment liquid is controlled, and the injection speed of the treatment liquid is matched with the real-time pH value of the solution, so that excessive injection of the treatment liquid is effectively avoided, the injection amount of the treatment liquid is reasonable, and the integral acid-base treatment effect is improved;
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The utility model provides a waste liquid recovery equipment for biological detector, is including handling case (1), its characterized in that, the lateral wall of handling case (1) is run through and is inserted and be equipped with inlet tube (2) and outlet pipe (3), the upper end of handling case (1) is run through and is fixed with sour alkali meter (4), the top of handling case (1) is fixed with sour workbin (5) and alkali workbin (6), the interior bottom of handling case (1) is fixed with motor (7), the output shaft of motor (7) is fixed with pivot (8), the inner wall of pivot (8) runs through and is fixed with a plurality of stirring pipe (9), every the lateral wall of stirring pipe (9) all runs through and has seted up a plurality of through-holes (10), the inner wall of pivot (8) rotates and is connected with commentaries on classics pipe (11), the lateral wall of commentaries on classics pipe (11) runs through and is fixed with two symmetries and sets up pipe (12), the bottom of sour workbin (5) and alkali workbin (6) is run through respectively and 12) the inside proportion pipe (13) that communicates, proportion pipe (13) inside is equipped with the solenoid valve, the upper end of acid-base meter (4) is fixed with control box (14), control mechanism is equipped with in control box (14).
2. The waste liquid recovery apparatus for the biological detector according to claim 1, wherein the control mechanism comprises a control cavity (15) arranged at an upper portion of the control box (14), the inner wall of the control cavity (15) is provided with a plurality of electricity receiving grooves (16), the inner wall of each electricity receiving groove (16) is fixed with an electricity receiving piece (18), and the inner wall of the control box (14) is rotatably connected with a driving rod (17).
3. The waste liquid recovery apparatus for biological detector according to claim 2, wherein the driving rod (17) is made of a permanent magnet, the control chamber (15) is filled with a magnetic fluid, the inner bottom of the control chamber (15) is disposed obliquely, and the pH meter (4) is a pointer-type pH meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309119.9A CN112462002A (en) | 2020-11-19 | 2020-11-19 | Waste liquid recovery equipment for biological detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309119.9A CN112462002A (en) | 2020-11-19 | 2020-11-19 | Waste liquid recovery equipment for biological detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112462002A true CN112462002A (en) | 2021-03-09 |
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ID=74837467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011309119.9A Withdrawn CN112462002A (en) | 2020-11-19 | 2020-11-19 | Waste liquid recovery equipment for biological detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112462002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184970A (en) * | 2021-04-22 | 2021-07-30 | 潍坊医学院 | High waste liquid automated inspection classification device for chemistry experiments of security |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101098U (en) * | 2014-09-25 | 2015-01-14 | 浙江巨化汉正新材料有限公司 | A kind of water measuring tank being applied to production ethyl difluoro |
| CN107619143A (en) * | 2017-09-20 | 2018-01-23 | 深圳市晟腾企业管理有限公司 | A kind of highly effective and safe urban sewage treating device |
| CN208603795U (en) * | 2018-07-02 | 2019-03-15 | 山东道一医药科技有限公司 | A kind of chemical experiment liquid waste treating apparatus easy to clean |
| CN210795884U (en) * | 2019-09-24 | 2020-06-19 | 济南海纳源环保设备有限公司 | Dual-purpose automatic adding device for acid and alkali |
| CN211255405U (en) * | 2019-11-06 | 2020-08-14 | 唐山开滦清源水处理有限责任公司 | Acid-base neutralization device for sewage treatment |
| CN211688425U (en) * | 2020-01-16 | 2020-10-16 | 河北大鹏医药化工有限公司 | Flocculation device for chemical wastewater desalination |
-
2020
- 2020-11-19 CN CN202011309119.9A patent/CN112462002A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101098U (en) * | 2014-09-25 | 2015-01-14 | 浙江巨化汉正新材料有限公司 | A kind of water measuring tank being applied to production ethyl difluoro |
| CN107619143A (en) * | 2017-09-20 | 2018-01-23 | 深圳市晟腾企业管理有限公司 | A kind of highly effective and safe urban sewage treating device |
| CN208603795U (en) * | 2018-07-02 | 2019-03-15 | 山东道一医药科技有限公司 | A kind of chemical experiment liquid waste treating apparatus easy to clean |
| CN210795884U (en) * | 2019-09-24 | 2020-06-19 | 济南海纳源环保设备有限公司 | Dual-purpose automatic adding device for acid and alkali |
| CN211255405U (en) * | 2019-11-06 | 2020-08-14 | 唐山开滦清源水处理有限责任公司 | Acid-base neutralization device for sewage treatment |
| CN211688425U (en) * | 2020-01-16 | 2020-10-16 | 河北大鹏医药化工有限公司 | Flocculation device for chemical wastewater desalination |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184970A (en) * | 2021-04-22 | 2021-07-30 | 潍坊医学院 | High waste liquid automated inspection classification device for chemistry experiments of security |
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Application publication date: 20210309 |
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