CN216262496U - Dosing device and aeration system with same - Google Patents

Abstract

The utility model discloses a dosing device and an aeration system with the dosing device, wherein the dosing device comprises diaphragm pumps, at least two medicine supplementing units and a medicine feeding pipeline, wherein the diaphragm pumps are sequentially connected, the medicine supplementing units are connected with the diaphragm pumps, each medicine supplementing unit comprises a medicine supplementing valve, a medicine storage tank and a dosing valve, and the medicine supplementing valves, the medicine storage tanks and the dosing valves are sequentially connected, and each medicine storage tank is provided with a pressure release valve and a back pressure valve; still include the air compressor machine, the air compressor machine passes through the pipeline and is connected with the back pressure valve of every medicine storage tank respectively. The utility model can realize the dosing work with small dose and multiple frequency, and ensures the continuity of the work.

Description

Dosing device and aeration system with same

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a dosing device and an aeration system with the dosing device.

Background

In China, most sewage treatment plants adopt a wastewater biological treatment technology of an activated sludge process, and in an aeration link, many sewage treatment plants adopt blast aeration, and a core component of a blast aeration system is a microporous aerator. The problem of pollution blockage of the microporous aerator is ubiquitous and cannot be avoided, because sewage contains a large amount of inorganic salt, organic matters and microorganisms, and the substances are attached to the outer surface of the microporous aerator to form 'external blockage', and 'internal blockage' is formed along with the backflow of the sewage into the microporous aerator. The new microporous aerator can form a dirt block which can affect the aeration effect of the microporous aerator after being used for about half a year. The main problems with fouling are as follows:

1. the operation energy consumption is increased due to the sewage blockage, and the economic operation of a sewage treatment plant is not facilitated. Because the air outlet resistance of the microporous aerator can be increased by dirt blockage, the aeration power consumption is directly influenced; the aeration uniformity can be reduced by dirt blockage, so that the oxygen transfer rate is reduced, and the aeration power consumption is increased; the air outlet aperture of the rubber membrane microporous aerator is increased due to dirt blockage, so that the oxygen transfer rate of the microporous aerator is reduced, and the aeration power consumption is increased; according to practical tests, the increase of aeration power consumption caused by the pollution blockage of the microporous aerator is basically over 10 percent and sometimes higher.

2. The sewage blockage of the microporous aerator is not beneficial to the long-period continuous operation of a sewage treatment plant. The dirt blockage is one of the main reasons for causing the accidental tearing of the rubber diaphragm, and the dirt blockage can cause the aperture of the rubber diaphragm to be forcibly increased, so that the tearing probability is objectively increased; the dirt block can cause the air blower to work in a high pipe pressure state for a long time, even surge is formed in severe cases, so that the stable operation of the air blower is influenced, the fault rate of the air blower is increased, and the service life of the air blower is shortened.

3. Even cause the unexpected production stop of a sewage treatment plant when the sewage blockage of the microporous aerator is serious.

Therefore, the method has very positive practical significance for solving the problem of sewage blockage of the microporous aerator of the sewage treatment plant. At present, the main methods for solving the pollution blockage of the microporous aerator are as follows:

1. stopping production, emptying the biochemical tank and cleaning the microporous aerator. The method is the most common mode adopted at present, has the most obvious effect, needs production halt, bears production halt loss and has higher cost.

2. The whole lifting type or suspension type structure, the method can only be realized when in new construction or transformation, the pollution blockage problem of the micropore aerator which is working at the bottom of the water can not be solved, moreover, the initial investment of the method is higher, and simultaneously, the fault rate is increased along with the complex structure.

3. The method has the main advantages of no production stop and low maintenance cost, and has the main disadvantages of strong corrosivity of the medicament and certain risk, repeated occurrence of pollution and blockage problems after cleaning, certain working conditions, short maintenance period of the cleaning effect, frequent maintenance and cleaning, and the like.

Among the above three solutions, the solution 3, that is, "on-line cleaning" has the lowest cost and the low implementation difficulty, and as long as regular maintenance cleaning is ensured, the effect can be ensured, which is an ideal solution to the problem of fouling of the microporous aerator.

At present, few sewage treatment plants are used to regularly clean and maintain the microporous aerator online, when serious pollution blockage occurs, a plurality of manufacturers are relatively used for solving the problem of pollution blockage of the microporous aerator by online cleaning, the difficulty of cleaning becomes very high after the serious pollution blockage occurs, if the serious pollution blockage does not occur, the serious pollution blockage can be repeatedly caused, and the energy-saving and consumption-reducing work and the continuous production are not facilitated. More seriously, some sewage treatment plants never carry out on-line cleaning on the microporous aerator, and as mentioned above, because the on-line cleaning is dangerous, the cleaning effect of some working conditions after cleaning is kept for a short period, and the problems directly cause that the "on-line cleaning" is not widely accepted by the sewage treatment plants.

At present, the acid cleaning trolley (as shown in the attached figure 7) is the most commonly used dosing equipment for cleaning the microporous aerator on line, and the working principle is as follows: the dosing hose 103 is inserted into the aeration vertical pipe through a preset interface device on the aeration vertical pipe; the power supply 104 is connected to deliver the medicament in the medicament tank 102 to the aeration vertical pipe through the control cabinet 105 by adopting an electrically driven metering pump 101; after the chemicals enter the aeration vertical pipe, the chemicals are mixed with air and then enter the microporous aerator at the lower end of the aeration vertical pipe along with the air, so that the aim of removing dirt inside micropores and around the pores of the microporous aerator is achieved.

The main drawbacks of the "pickling trolley" are as follows:

1. the safety is poor. Firstly, there is great potential safety hazard in the process of inserting, pulling out the medicine hose because, aeration riser inside has pressure, when pulling out the medicine hose, in the inside air of aeration riser, probably there is the medicament to remain, in case handle improperly, the medicament will spout along with the air, has the risk of injuring people and corroding equipment, this is the main potential safety hazard of pickling dolly. In addition, the biological pond is mostly higher than the ground by about 4 meters, and the medicines are transported to the top of the pond, so that the labor is large, and the biological pond is not safe enough.

2. From the cleaning effect, if once only add medicine too much, most of medicament is wasted, because most of medicament can be along with the invalid micropore aerator of passing through of air, so, the most effective method is "the small dose, add medicine for many times", obviously, "the operating mode of riser installation, medicine, dismantlement one by one of pickling dolly", hardly realize "the small dose, many times" and add medicine, not only extravagant medicament, the cleaning effect is also not ideal enough.

3. The operating mode of riser installation, medicine, dismantlement one by one of "pickling dolly", when leading to most producers to use "pickling dolly" to carry out online cleaning, adopt every aeration riser mode of adding medicine for half an hour, such mode neither accords with the principle of "low dose, the medicine is added to multifrequency time", also does not do benefit to the development of the online cleaning maintenance work of micropore aerator, because efficiency is very low, an equipment, can only wash ten risers a day, sewage treatment plant scale is big more, the drawback of this mode is more obvious, and micropore aerator does not do the maintainability and washs, the dirt blocks up inevitablely, has already washd, the effect is difficult to keep yet.

In conclusion, the defects of the 'pickling trolley' lead many sewage treatment plants not to perform online maintenance cleaning on the microporous aerator, even when the sewage blockage is serious, the problems are not solved by adopting the online cleaning mode of the microporous aerator, but the production stoppage treatment is directly selected, so that the production stoppage loss and the environmental protection pressure are caused.

Disclosure of Invention

The present invention provides a subject for solving the above-mentioned problems. In the system and the method,

in order to achieve the purpose, the technical scheme of the utility model is as follows:

a dosing device comprises diaphragm pumps, at least two medicine supplementing units and a medicine feeding pipeline, wherein the diaphragm pumps are connected in sequence, the medicine supplementing units are connected with the diaphragm pumps, each medicine supplementing unit comprises a medicine supplementing valve, a medicine storage tank and a dosing valve, the medicine supplementing valves, the medicine storage tanks and the dosing valves are connected in sequence, and each medicine storage tank is provided with a pressure release valve and a back pressure valve;

still include the air compressor machine, the air compressor machine passes through the pipeline and is connected with the back pressure valve of every medicine storage tank respectively.

Preferably, a floating ball liquid level meter is arranged in the medicine storage tank.

Preferably, the device further comprises a medicament container which is connected with the diaphragm pump through a medicament pumping pipeline.

An aeration system with a dosing device, which comprises the aeration device, the dosing device and a dosing pipeline, wherein,

the aeration device comprises an air blower, a main pipe valve and a plurality of aeration units connected with the main aeration pipe, which are sequentially connected through the main aeration pipe, wherein each aeration unit comprises a branch pipe valve, a vertical aeration pipe and a microporous aerator, which is connected with the vertical aeration pipe and is positioned at the bottom of the tank, wherein the branch pipe valve and the vertical aeration pipe are sequentially connected through the branch aeration pipe;

the medicine feeding pipeline comprises a medicine feeding main pipe connected with the medicine feeding pipeline and a plurality of medicine feeding branch pipes connected with the medicine feeding main pipe, the medicine feeding main pipe is arranged along the path of the aeration main pipe, and the medicine feeding branch pipes are arranged along the path of the corresponding aeration branch pipes and are connected with the aeration vertical pipes on the corresponding aeration branch pipes.

Preferably, a plurality of aeration vertical pipes which are arranged at equal intervals are connected to the aeration branch pipes.

Preferably, be provided with the main pipeline valve on the dosing pipeline, all be provided with branch pipeline valve and add the medicine relief valve on every adds the medicine branch pipe, branch pipeline valve sets up in the starting point along direction of delivery, it sets up in the terminal point along direction of delivery to add the medicine relief valve.

Preferably, the dosing pressure release valve is connected with the sewage tank through a pressure release pipe.

Preferably, the system further comprises a probing dosing terminal, and the dosing branch pipe is connected with the aeration vertical pipe on the corresponding aeration branch pipe through the probing dosing terminal.

Preferably, the probing type dosing terminal comprises a hose connector, a hose and a metering nozzle, wherein the hose connector, the hose and the metering nozzle are sequentially connected, the metering nozzle is positioned at the bottom in the aeration vertical pipe, a vertical pipe dosing valve is arranged at the top of the aeration vertical pipe, one end of the vertical pipe dosing valve is connected with the dosing branch pipe, and the other end of the vertical pipe dosing valve is connected with the hose connector.

Preferably, the device also comprises an aeration pipe gallery, wherein the main aeration pipe, the branch aeration pipe, the main medicine adding pipe and the branch medicine adding pipe are arranged in the aeration pipe gallery.

Based on the technical scheme, the utility model has the beneficial effects that:

1) the utility model is applied to the whole dosing process, only the action of opening the cover of the medicament container and inserting the medicament pumping pipeline into the medicament container is possible to contact with the medicament, but the contact probability is extremely low and is almost zero, and then the medicament enters the diaphragm pump, enters the medicament storage tank, enters the main medicament adding pipe, enters the branch medicament adding pipe and finally enters the hose of the probing type medicament adding terminal;

2) according to the utility model, the dosing pipeline is arranged according to the layout mode of the aeration pipeline, so that the aeration pipe gallery can be better utilized, most of equipment is hidden in the aeration pipe gallery, the overall layout is reasonable, and the aeration pipe gallery can be utilized for freezing prevention and sun protection without damaging the original field layout;

3) the utility model adopts the air compressor as a power source, realizes any switching and even complete closing of the valve, and does not need to frequently control the air compressor. Therefore, the whole operation realization process is flexible and can be switched randomly, the medicine adding with small dosage and multiple frequencies can be easily realized, the specific medicine adding work is that the medicine container is transported beside the medicine adding device and is connected with the medicine pumping pipeline, and then each valve is switched on and off, and the medicine adding work can be easily finished, so that the medicine adding with small dosage and multiple frequencies can be continuously carried out for multiple days, the serious pollution and blockage problem of the microporous aerator is solved until the optimal cleaning effect is obtained. The microporous aerator can be frequently cleaned in a maintenance manner according to the pressure change of the aeration main pipe, the dosage and the frequency of cleaning each time can be less, the good aeration effect can be kept for a long time, and the microporous aerator is prevented from being seriously polluted and blocked again;

4) the utility model adopts the combination of the back pressure of the air compressor and the metering nozzle, the metering is relatively accurate, and the accuracy of dosing metering is effectively improved;

5) the utility model realizes atomization dosing through the metering nozzle, reduces the probability of mixing the medicament with water existing at the bottom, and simultaneously, the mist is easier to flow into a micropore aerator or a transverse pipe with less ventilation, so that the cleaning effect is better while the medicament is saved;

6) according to the utility model, the plurality of medicine storage tanks work alternately, so that the overall size of the medicine adding device is reduced, and two different actions of adding medicine and supplementing medicine are respectively executed on different medicine storage tanks, so that the problem that the medicine adding work must be interrupted if the two actions are executed when only one medicine storage tank is used is solved, the continuity of work is ensured, and the work efficiency is improved;

7) compared with the traditional medicine feeding mode in which a large amount of work is to convey the medicine to the biochemical tank from the ground, the automatic medicine feeding device disclosed by the utility model has the advantages that the labor amount is greatly reduced, the problem is thoroughly solved, the automatic medicine feeding is realized, and the continuity and the safety of the medicine feeding are also ensured.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a drug delivery device according to an embodiment;

FIG. 2 is a schematic diagram of an aeration system with a drug delivery device according to one embodiment;

FIG. 3 is a schematic view of an aeration system with a dosing device in an embodiment without the aeration device;

FIG. 4 is a schematic diagram of an aeration riser and a probing type dosing terminal in an aeration system with a dosing device according to an embodiment;

FIG. 5 is an enlarged view of M in FIG. 4;

FIG. 6 is a schematic view of a placement of a medicating device in one embodiment;

FIG. 7 is a schematic view of the structure of the pickling carriage,

in the figures, the various reference numbers are:

101. a metering pump; 102. a medicine tank; 103. a dosing hose; 104. a power source; 105. a control cabinet; 1. a medicament container; 2. a diaphragm pump; 3. a medicine supplementing unit; 301. a medicine replenishing valve; 302. a medicine storage tank; 3021. a number 1 medicine storage tank; 3022. a number 2 medicine storage tank; 3023. a number 3 medicine storage tank; 303. a dosing valve; 304. a pressure relief valve; 305. a floating ball liquid level meter; 306. a back pressure valve; 4. A medicine feeding pipeline; 5. a main medicine adding pipe; 6. a main line valve; 7. an air compressor; 8. probing a medicine adding terminal; 801. a hose connector; 802. a hose; 803. a metering nozzle; 9. a dosing branch pipe; 901. a branch line valve; 902. adding a medicine pressure release valve; 10. a blower; 11. an aeration main pipe; 12. a main pipe valve; 13. an aeration unit; 131. an aeration branch pipe; 132. a branch valve; 133. an aeration vertical pipe; 134. a vertical pipe dosing valve; 135. a microporous aerator; 14. an aeration pipe gallery; 15. a medicine adding device.

Detailed Description

In order to more clearly illustrate the utility model, the utility model is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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; 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.

As shown in fig. 1 to 6, the present embodiment provides an aeration system with a drug adding device, which mainly comprises an aeration device, a drug adding device 15, a probing-type drug adding terminal and a drug adding pipeline, and is specifically described as follows:

the aeration device comprises an air blower 10, a main pipe valve 12 and a plurality of aeration units 13 which are connected with an aeration main pipe 11 through the aeration main pipe 11, wherein the aeration units 13 comprise branch pipe valves 132, aeration vertical pipes 133 and microporous aerators 135 which are connected with the aeration vertical pipes 133 through aeration branch pipes 131, the branch pipe valves 132 and the aeration vertical pipes 133 are sequentially connected, the microporous aerators are positioned at the bottom of the tank, a vertical pipe dosing valve 134 is arranged at the top of the aeration vertical pipes 133, an aeration pipe gallery 14 is arranged along the paths of the aeration main pipe 11 and the aeration branch pipes 131, the aeration main pipe 11 and the aeration branch pipes 131 are arranged in the aeration pipe gallery 14, and the aeration pipe gallery 14 can be effectively prevented from freezing and sun.

As shown in fig. 2, the chemical adding device 15 is located outside the biochemical pool and placed on the ground near the vertically arranged main aeration pipe 11, the chemical adding device 15 comprises a diaphragm pump 2, three chemical supplementing units 3 connected with the diaphragm pump 2 and a chemical feeding pipeline 4 which are connected in sequence, the chemical supplementing unit 3 comprises a chemical supplementing valve 301, a chemical storage tank 302 and a chemical adding valve 303 which are connected in sequence, each chemical storage tank 302 is provided with a pressure release valve 304 and a back pressure valve 306, and a floating ball liquid level meter 305 is arranged in each chemical storage tank 302; the device also comprises an air compressor 7, and the air compressor 7 is respectively connected with the back pressure valve 306 on each medicine storage tank 302 through a pipeline.

The function of the drug adding device 15 is to extract the drug from the drug container 1 and then to deliver the drug to the top of the tank through the drug feeding pipeline 4 connected with the drug adding main pipe 5.

The working principle of the medicine adding device 15 is as follows (as shown in the attached figure 1): the power for conveying the medicament to the top of the tank and conveying the medicament to the vertical aeration pipe 133 is from the air compressor 7, namely, the air compressor 7 is used for back pressure on the medicament in the medicament storage tank 302, and when the reserve pressure is greater than the sum of the height of the tank and the internal pressure of the vertical aeration pipe 133, the medicament is conveyed to the top of the tank from the medicament storage tank 302 of the ground medicament adding device 15 under the action of the pressure difference until the medicament is conveyed to the vertical aeration pipe 133 and is mixed with the air in the vertical aeration pipe 133.

In the medicine adding device 15 provided by this embodiment, 3 medicine storage tanks 302 (No. 1 medicine storage tank 3021, No. 2 medicine storage tank 3022, and No. 3 medicine storage tank 3023) are provided in the medicine adding device 15, and this way of multiple medicine storage tanks 302 can realize continuous medicine adding, and does not require that the volume of the medicine storage tanks 302 is large, but is not limited thereto, and the number of the specific medicine storage tanks 302 can be set according to actual needs. The working process is as follows: firstly, in the working process, the air compressor 7 is normally opened, then the backpressure valve 306 of the drug storage tank 3021 is opened, the drug storage tank 3021 is applied with backpressure, then the medicine adding valve 303 of the drug storage tank 3021 is opened, the medicine adding valve 303 is connected with a medicine adding pipeline, and the medicine in the drug storage tank 3021 is conveyed to the top of the tank under the action of pressure; at the same time, the number 2 drug container 3022 may be refilled by first closing the medicine adding valve 303 and the back pressure valve 306 of the number 2 drug container 3022, then opening the pressure relief valve 304 of the number 2 drug container 3022, then opening the medicine refilling valve 301 of the number 2 drug container 3022, and finally opening the diaphragm pump 2 to start refilling the number 2 drug container 3022. The floating ball liquid level meter 305 has the functions of automatically closing the corresponding dosing valve 303 and the back pressure valve 306 when the medicine in the medicine storage tank 302 descends to a certain position, and then opening the pressure release valve 304, the medicine supplementing valve 301 and the diaphragm pump 2 to supplement the medicine to the medicine storage tank 302; similarly, when the medicine in the medicine storage tank 302 is supplemented to a certain height, the diaphragm pump 2 is automatically closed, and the corresponding medicine supplementing valve 301 and the corresponding pressure release valve 304 are closed, at this time, the medicine storage tank 302 is in a standby state, and when the medicine needs to be added into the medicine storage tank 302, the back pressure valve 306 and the medicine adding valve 303 on the medicine storage tank 302 are opened, so that the medicine in the medicine storage tank 302 can be added into the aeration vertical pipe 133. The No. 3 drug storage tank 3023 may be in a standby state or may participate in the work cycle, i.e., the No. 1 drug storage tank 3021 adds drugs and the No. 3 drug storage tank 3023 supplements drugs; then, the medicine is added into the medicine storage tank No. 2 3022, and the medicine is supplemented into the medicine storage tank No. 1 3021; then the medicine is added into the medicine storage tank No. 3 3023, the medicine is supplemented into the medicine storage tank No. 2 3022, and the process is repeated.

In conclusion, the dosing device 15 can automatically deliver the chemicals to the dosing pipeline on the top of the tank, and maintain a stable pressure in the dosing pipeline, thereby providing conditions for the final addition of the chemicals to the aeration vertical pipe 133.

As shown in fig. 5 and 6, the penetrating medicine adding terminal 8 is composed of a metering nozzle 803, a hose 802 and a hose connector 801, and is installed on the aeration vertical pipe 133, and the hose connector 801 has the following functions: one end of the joint is fixedly connected with the aeration vertical pipe 133, and the other end of the joint is connected with a vertical pipe dosing valve 134 on the aeration vertical pipe 133. The probing type medicine adding terminal 8 is used for delivering the medicine delivered by the medicine adding device 15 into the aeration vertical pipe 133 through the hose 802, and the purpose of adopting a probing type structure is to avoid a metal section of the aeration vertical pipe 133, because the upper part of most aeration vertical pipes 133 is a metal pipeline, and the lower part is an engineering plastic pipeline, the probing type structure can reduce the damage of the medicine to the metal pipeline. Metering nozzle 803's effect is that the measurement adds dose and atomizing medicament, the medicament is through atomizing, compare with liquid direct addition, it is better with the effect of air mixing, just so avoided the medicament with the form of liquid be in with each micropore aerator 135 of UNICOM violently manage in, because these pipelines often have water, the medicament can be diluted by water, cause the waste of medicament, the cleaning performance also can significantly reduce, in addition, metering nozzle 803 is under the effect of stable backpressure, the measurement rate of accuracy is better, this is also another leading reason who adopts air compressor machine 7 as the pressure source.

As shown in fig. 3 and 4, the medicine feeding pipeline includes a main medicine feeding pipe 5 connected to the medicine feeding pipeline 4, and a plurality of branch medicine feeding pipes 9 connected to the main medicine feeding pipe 5, the main medicine feeding pipe 5 is arranged along the route of the main aeration pipe 11, the branch medicine feeding pipes 9 are arranged along the route of the corresponding branch aeration pipe 131 and are connected to the corresponding vertical aeration pipe 133 on the branch aeration pipe 131, so as to transport the medicine delivered from the medicine feeding device 15 to the penetrating medicine feeding terminal 8 on the vertical aeration pipe 133. As mentioned above, after the chemicals reach the tank top through the chemical feeding pipeline 4, the chemical feeding main pipe 5 is arranged at the tank top along the direction of the aeration main pipe 11 which is arranged horizontally originally, in order to connect the chemical feeding main pipe 5 with the aeration vertical pipe 133, the chemical feeding branch pipe 9 is arranged at each aeration pipe gallery 14, and the chemical feeding relief valve 902 is arranged at the end of the chemical feeding branch pipe 9 to ensure that the chemicals can reach the tail end of the chemical feeding branch pipe 9. The main medicine adding pipe 5 is provided with a main pipeline valve 6 to control whether the medicine in the main medicine adding pipe 5 passes or not, the branch pipeline valve 901 is arranged on the branch medicine adding pipe 9 to control whether the medicine in the branch medicine adding pipe 9 passes or not, and the vertical pipe medicine adding valve 134 is arranged between the branch medicine adding pipe 9 and the vertical aeration pipe 133 to control the medicine adding of the vertical aeration pipe 133.

Except the dosing device 15, other parts are mostly hidden in the aeration pipe gallery 14 (as shown in the attached drawing 3), the whole layout is reasonable, and the aeration pipe gallery 14 can be used for preventing freezing and sun under the condition of not damaging the original field layout.

The installation mode is as follows:

1) the method for installing the probing type dosing terminal 8 comprises the following steps: firstly, closing an air inlet valve of a single aeration vertical pipe 133, opening a hole on the aeration vertical pipe 133, tapping, then inserting a hose 802 with a metering nozzle 803 into the aeration vertical pipe 133, and then fixing the whole inserted medicine adding terminal 8 on the aeration vertical pipe 133 by using a hose joint 801 at the other end of the hose 802;

2) arranging a medicine adding branch pipe 9, wherein the medicine adding branch pipe 9 is positioned in the aeration pipe gallery 14, is arranged in parallel with the aeration branch pipe 131 and is arranged on the bottom of the pipe gallery or on the wall body on one side; a branch pipeline valve 901 is arranged at the front end of the dosing branch pipe 9, a dosing pressure release valve 902 is arranged at the tail end of the dosing branch pipe 9, the dosing pressure release valve 902 is connected with a pressure release pipe, and the pressure release pipe is connected to a sewage pool; then, the probing type dosing terminal is connected with a dosing branch pipeline by a pipeline and a vertical pipe dosing valve;

3) the main medicine adding pipe 5 is arranged on the top of the tank, the main medicine adding pipe 5 is arranged in parallel with the main aeration pipe 11 horizontally arranged on the top of the tank and is arranged on the bottom of the pipe gallery or on the wall body on one side of the pipe gallery, the main medicine adding pipe 5 is connected with the branch medicine adding pipe 9 through a tee joint or an elbow, and the branch pipe valve 901 is positioned on the branch medicine adding pipe 9. A main pipeline valve 6 is arranged at the front end of the main medicine adding pipe 5;

4) and a dosing device 15 is arranged on the ground outside the biochemical tank and close to the vertical aeration main pipe 11, and then a dosing device outlet is connected with a tank top dosing main pipe 5 through a dosing pipeline 4 (shown in figure 2).

When the micro-pore aerator 135 needs to be cleaned, the medicament container 1 is conveyed beside the dosing device 15, the cover of the medicament container 1 is opened, the medicament pumping pipeline is inserted into the medicament container 1, and the dosing device 15 and the valve at the top of the tank are operated, so that the aim of dosing and cleaning the micro-pore aerator 135 can be fulfilled.

The principle of the medicine adding device 15 is described in detail above, and the automatic control part can be combined in various ways, and is omitted here.

It should be apparent that the above is only an example of the drug adding device of the present invention, and the above examples are provided for clearly illustrating the present invention, and not for limiting the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or modifications on the basis of the above description, and not exhaustive list of all embodiments, and all obvious variations or modifications that are included in the technical solution of the present invention are still within the protection scope of the present invention.

Claims (10)

1. A dosing device is characterized by comprising diaphragm pumps, at least two medicine supplementing units and a dosing pipeline, wherein the diaphragm pumps are sequentially connected, the medicine supplementing units are connected with the diaphragm pumps, each medicine supplementing unit comprises a medicine supplementing valve, a medicine storage tank and a dosing valve, the medicine supplementing valves, the medicine storage tanks and the dosing valves are sequentially connected, and each medicine storage tank is provided with a pressure release valve and a back pressure valve;

still include the air compressor machine, the air compressor machine passes through the pipeline and is connected with the back pressure valve of every medicine storage tank respectively.

2. The dosing device according to claim 1, wherein a float level gauge is disposed in the drug storage tank.

3. The dosing device of claim 1, further comprising a medicament container connected to the diaphragm pump via a drug withdrawal line.

4. An aeration system with a dosing device, comprising an aeration device, a dosing device according to any one of claims 1 to 3, and a dosing line, wherein,

the aeration device comprises an air blower, a main pipe valve and a plurality of aeration units connected with the main aeration pipe, which are sequentially connected through the main aeration pipe, wherein each aeration unit comprises a branch pipe valve, a vertical aeration pipe and a microporous aerator, which is connected with the vertical aeration pipe and is positioned at the bottom of the tank, wherein the branch pipe valve and the vertical aeration pipe are sequentially connected through the branch aeration pipe;

the medicine feeding pipeline comprises a medicine feeding main pipe connected with the medicine feeding pipeline and a plurality of medicine feeding branch pipes connected with the medicine feeding main pipe, the medicine feeding main pipe is arranged along the path of the aeration main pipe, and the medicine feeding branch pipes are arranged along the path of the corresponding aeration branch pipes and are connected with the aeration vertical pipes on the corresponding aeration branch pipes.

5. An aeration system with a drug adding device according to claim 4, wherein a plurality of aeration vertical pipes which are arranged at equal intervals are connected to the aeration branch pipes.

6. The aeration system with the dosing device according to claim 4, wherein a main pipeline valve is arranged on the dosing pipeline, a branch pipeline valve and a dosing relief valve are arranged on each dosing branch pipeline, the branch pipeline valve is arranged at the starting point along the conveying direction, and the dosing relief valve is arranged at the end point along the conveying direction.

7. An aeration system with a dosing device according to claim 6, wherein the dosing relief valve is connected with the sewage tank through a pressure relief pipe.

8. An aeration system with a drug adding device according to claim 4 or 5, characterized in that the aeration system also comprises a probe-type drug adding terminal, and the drug adding branch pipe is connected with the aeration vertical pipe on the corresponding aeration branch pipe through the probe-type drug adding terminal.

9. The aeration system with a dosing device according to claim 8, wherein the probing dosing terminal comprises a hose connector, a hose and a metering nozzle located at the bottom inside the aeration vertical pipe, which are connected in sequence, the top of the aeration vertical pipe is provided with a vertical pipe dosing valve, one end of the vertical pipe dosing valve is connected with the dosing branch pipe, and the other end of the vertical pipe dosing valve is connected with the hose connector.

10. The aeration system with the dosing device according to claim 4, further comprising an aeration pipe gallery, wherein the main aeration pipe, the branch aeration pipes, the main dosing pipe and the branch dosing pipes are all arranged in the aeration pipe gallery.

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