Anti-blocking jet aeration device

Abstract

The utility model relates to an anti-blocking jet aeration device which comprises a jet circulating pump, an aeration system and an air inlet system leading to the aeration system which are sequentially connected with a mud-water mixing pipe, the air inlet system comprises an air blower, a pipeline check valve, a blowoff valve and a backflushing valve which are connected in sequence, an aeration main pipe is connected between the blowoff valve and the backflushing valve, the blowoff valve and the backflushing valve lead to the aeration system through the aeration main pipe, the aeration system is provided with multiple paths in parallel, and each path comprises a jet aeration device and a regulating valve; an air inlet of the jet aeration device is connected with the aeration main pipe through a matched aeration branch pipe, and the regulating valve is arranged at a joint of the aeration branch pipe and the aeration main pipe; sewage enters the water inlet end of the jet aerator after being pressurized by the jet circulating pump and a pipeline thereof, and is released by the mixing pipe; air is pressurized by the air blower and the aeration branch pipe and then enters the air inlet end of the jet aerator, the air and sewage converge at the tail end of the sewage throat pipe, air-dissolved water is formed through the mixing pipe and released into the aeration tank, and the functions of aeration and stirring of sewage in the aerobic tank are completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment technical field, especially relate to a kind of anti-clogging jet aeration device. BACKGROUND

[0002] The aerobic process of sewage treatment is to remove degradable pollutants such as COD, BOD, ammonia nitrogen and phosphorus in sewage by biological metabolism of aerobic microorganisms (including facultative microorganisms) under aerobic conditions. Activated sludge method is a commonly used method for aerobic biological treatment of sewage. This method is to continuously mix and cultivate sewage and various microbial populations under artificial oxygenation conditions to form activated sludge. The biological coagulation, adsorption and oxidation of activated sludge are used to decompose and remove organic pollutants in sewage.

[0003] In the aerobic tank, the jet aeration device not only supplements and increases the dissolved oxygen content in the sewage, but also fully mixes and agitates the activated sludge and sewage in the aerobic tank, and the sludge is in a suspended state. Therefore, the integrity of the jet aeration device is very important in the aerobic system.

[0004] In actual operation, the jet aeration device contacts sludge, sewage, impurities and other materials, which causes the jet aeration device to be easily blocked, thereby affecting the uniformity of aeration in the aerobic tank and the process effect, especially after the sewage treatment system is shut down, sludge is deposited and gathered inside the aeration device, which is more likely to cause the aeration device to be blocked. At the same time, the jet aeration device is fixed at the bottom of the aerobic tank, and the aeration device can only be removed and cleaned after the system is emptied of sewage during production stoppage, which is a large amount of work.

[0005] The invention disclosed in publication number CN118359323A discloses a butterfly-type jet aeration device, which has the following technical solution points: an outer chamber, an inner chamber located in the outer chamber, a top pipe connected to the outer chamber, an air inlet pipe connected to the top pipe, and a water inlet pipe connected to the inner chamber; the top end of the top pipe has a top plate, and the water inlet pipe passes through and is fixedly connected to the top plate; a plurality of outer nozzles are connected to the outer chamber, a plurality of inner nozzles are connected to the inner chamber, the number of outer nozzles and the number of inner nozzles are equal, and each number is 6-8; the plurality of outer nozzles are distributed in a ring shape at equal intervals, and the plurality of inner nozzles are distributed in a ring shape at equal intervals. However, the internal structure of the jet aeration device still needs to be improved to improve the aeration effect.

[0006] Therefore, it is necessary to provide a jet aeration device with simple structure, convenient operation, adjustable and controllable aeration amount. UTILITY MODEL CONTENTS

[0007] The utility model aims at the deficiencies of the prior art, provides a kind of anti-clogging jet aeration device, prevents that aeration device is blocked and the aeration device that is blocked is conveniently and quickly dredged, to reach the purpose of improving aeration efficiency and reducing aeration dead zone.

[0008] To solve the above technical problems, the utility model adopts the technical scheme of:

[0009] A kind of anti-clogging jet flow aeration device, including the sludge-water mixing pipe connected to the water outlet of aerobic system and with the sludge-water mixing pipe sequentially connected layout jet circulating pump, aeration system and the air intake system leading to aeration system;

[0010] The air intake system includes sequentially connected air blower, pipeline check valve, emptying valve and backflush valve, and air supply main pipe is connected between emptying valve and backflush valve and leads to aeration system through air supply main pipe, and emptying pipe is also provided at emptying valve;

[0011] The aeration system is provided with multiple ways in parallel, and each way includes jet flow aeration device and regulating valve, and the air inlet of jet flow aeration device is connected with air supply main pipe through the air supply branch pipe provided, and the regulating valve is arranged at the interface of air supply branch pipe and air supply main pipe;

[0012] And the water inlet of jet flow aeration device is connected with jet circulating pump through the water pipe provided.

[0013] The jet flow aeration device includes air inlet chamber communicated with air inlet, water inlet channel communicated with water inlet and mixing pipe for gas-liquid mixing, and a partition body is arranged between air inlet chamber and water inlet channel, and a plurality of mixing pipes are arranged along the circumference and extend downward and outward from the inside to the outside, and air passages corresponding to the partition body are provided on the partition body, and one-way valves are arranged in the air passages.

[0014] The mixing pipe includes contraction section, throat pipe, mixing section and diffusion section arranged from the inside to the outside in sequence, and the air passage is arranged between the mixing section and the throat pipe, the gas entering through the air passage is mixed with the liquid entering through the throat pipe and is discharged through the mixing section and the diffusion section.

[0015] The inlet of the contraction section is wide, and the outlet is narrow and consistent with the width of the throat pipe;

[0016] And the mixing section is located outside the air passage and its width is larger.

[0017] The mixing section includes equal-width section and flared section, and the width of the equal-width section is greater than the width of the throat pipe section, and the flared section gradually widens from the inside to the outside until the end is the same as the width of the diffusion section.

[0018] The backflush valve is further connected with backflush pipe outside.

[0019] The regulating valve adopts manual valve.

[0020] The utility model has the advantages of:

[0021] (1) The anti-clogging jet flow aeration device, through the jet flow circulating pump, the aeration system and the air inlet system connected in sequence with the sludge and water mixing pipe; the air inlet system includes a blast air fan, a pipeline check valve, an emptying valve and a backflush valve connected in sequence, and the emptying valve and the backflush valve are connected with the aeration main pipe and lead to the aeration system through the aeration main pipe, and the aeration system is provided with multiple branches in parallel, and each branch includes a jet flow aeration device and a regulating valve, and the air inlet of the jet flow aeration device is connected with the aeration main pipe through the aeration branch pipe, and the regulating valve is arranged at the interface of the aeration branch pipe and the aeration main pipe; the sewage is pressurized by the jet flow circulating pump and its pipeline and then enters the water inlet end of the jet flow aerator and is released through the mixing pipe; at the same time, the air is pressurized by the blast air fan and the aeration branch pipe and then enters the air inlet end of the jet flow aerator, combines with the high-speed flowing sewage at the end of the sewage throat pipe and forms dissolved air water through the mixing pipe and is released into the aeration tank to complete the oxygenation and stirring functions of the sewage in the aerobic tank.

[0022] (2) After the aeration main pipe leads out each aeration branch pipe, although each aeration branch pipe is in parallel, the distance from the blast air fan is far or near, and there is a pressure difference in each branch, and the opening degree of each branch regulating valve can be adjusted to adjust the aeration pressure of each branch to be uniform, the aeration is good, and the hidden danger such as weak aeration of part of the aeration equipment in the daily operation process is eliminated in the daily operation.

[0023] (3) When a certain place is slightly clogged, the frequency of the blast air fan is increased, the pipeline air pressure is increased, the valves of other branches are closed, air blowing is performed, and the pipeline is dredged, the aeration pressure of each aeration branch can be controlled through the regulating valve, the sludge and impurities in the air inlet chamber of the jet flow aeration device are washed, the clogging is prevented, the continuous and stable operation of the jet flow aeration device is realized, and the purpose of preventing clogging is achieved.

[0024] (4) The one-way valve installed in the air passage in the air inlet chamber can prevent the backflow of sludge, sewage and the like into the air inlet chamber after the equipment stops running, increase the risk of clogging, and through the addition of high-pressure water in the backflush pipeline at regular intervals, the air inlet chamber of the jet flow aerator can be cleaned, the continuous and stable operation of the jet flow aeration device is realized, and the purpose of preventing clogging is achieved.

[0025] (5) The mixing pipe includes a contraction section, a throat pipe, a mixing section and a diffusion section arranged in sequence from inside to outside, and the air passage is arranged between the mixing section and the throat pipe, the gas entering through the air passage is mixed with the liquid entering through the throat pipe and is discharged through the mixing section and the diffusion section, the inlet of the contraction section is wide, the outlet thereof is narrowed and consistent with the width of the throat pipe, can pressurize the entering fluid, improve the flow rate, increase the dissolved air pressure and increase the gas-water mixing efficiency.

[0026] The mixing section is located outside the air passage and has a width that is larger than that of the throat pipe, and includes an equal-width section and an expanding section, and the width of the equal-width section is greater than that of the throat pipe section, which can prolong the gas-water mixing pressure maintaining time and improve the structural strength.

[0027] (6) The integrated anti-clogging jet aeration device can be operated with water or dredging during daily operation, reducing the probability of clogging, and does not require emptying the pool or manual entry into the pool for dismantling. Attached Figure Description

[0028] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Fig. 2 This is a partial structural schematic diagram of the present invention;

[0030] Fig. 3 This is a schematic diagram of the jet aeration device. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0032] This utility model provides an anti-clogging jet aeration device, such as... Figs. 1 to 3 As shown.

[0033] A clog-resistant jet aeration device includes a mud-water mixing pipe 11 connected to the outlet of an aerobic system, a jet circulation pump 10, an aeration system, and an air intake system connected in sequence to the mud-water mixing pipe 11.

[0034] The air intake system includes a blower 12, a pipeline check valve 14, an air vent valve 15 and a backflush valve connected in sequence, and an aeration header pipe is connected between the air vent valve and the backflush valve and leads to the aeration system through the aeration header pipe; an air vent pipe is connected to the air vent valve 15.

[0035] The aeration system is provided with multiple parallel aeration channels, and each channel includes a jet aeration device 20 and a regulating valve 17. The air inlet 1 of the jet aeration device 20 is connected to the aeration main pipe through the provided aeration branch pipe 13, and the regulating valve 17 is arranged at the interface between the aeration branch pipe 13 and the aeration main pipe.

[0036] The inlet 1 of the jet aeration device 20 is connected to the jet circulation pump 10 via a water pipe. In this embodiment, the regulating valve 17 is a manual valve, and a backwash pipe 18 is also connected to the outside of the backwash valve 19.

[0037] The jet aeration device 20 includes an air inlet chamber 2 connected to the air inlet 1, a water inlet channel connected to the water inlet 4, and a mixing pipe 5 for gas-liquid mixing. A partition is provided between the air inlet chamber 1 and the water inlet channel. Multiple mixing pipes 5 are arranged circumferentially and extend downward from the inside to the outside. The partition is provided with corresponding air passages, and each air passage is equipped with a one-way valve 3.

[0038] The mixing tube 5 includes a constriction section 6, a throat 7, a mixing section 8, and a diffuser section 9 arranged sequentially from the inside to the outside. An air passage is located between the mixing section 8 and the throat 7. Gas entering through the air passage mixes with liquid entering through the throat 7 and exits through the mixing section 8 and the diffuser section 9. The inlet of the constriction section 6 is wide, and its outlet narrows to match the width of the throat. The mixing section 8 is located outside the air passage and its width increases. The mixing section 8 includes a constant-width section and a flared section. The width of the constant-width section is greater than the width of the throat section, while the flared section gradually widens from the inside to the outside until its end is the same width as the diffuser section 9.

[0039] To prevent clogging of the aeration device and to facilitate quick and easy unclogging of the device, thereby achieving continuous and stable control of the aeration system, the specific operating procedure is as follows:

[0040] When the liquid level in the aerobic tank is higher than the inlet height of the jet circulation pump sludge-water mixing pipe 11, the jet circulation pump 10 is started. The sludge-water mixture entering through the sludge-water mixing pipe 11 is pressurized and then enters the jet aeration devices of each aeration system. Then, the blower 12 is started, and the pressurized air enters the jet aeration device 20 through the aeration main pipe 21 and the aeration branch pipe 13. The pressurized sludge-water mixture continues to be pressurized and its flow velocity increased in the contraction section of the mixing pipe 5 of the jet aeration device. At the same time, it converges with the pressurized air at the end of the throat pipe 7. After mixing, it enters the mixing section 8 and the diffusion section 9 to form dissolved air water that is sprayed into the aerobic system.

[0041] When the aeration system stops, the one-way valve 3 installed in the air passage of the jet aeration device 20 prevents sludge, sewage and other substances from flowing back into the air inlet chamber 2 after the equipment stops running, thus increasing the risk of blockage.

[0042] When the jet aeration device experiences uneven aeration or slight blockage, the aeration of the entire aeration system is shut off by closing the regulating valve 17 of the other branch aeration systems. Only one branch is opened, and the pressure of the aeration device in that single branch is increased to flush out sludge and other impurities from the air inlet chamber of the aeration device with high-pressure air, thus preventing blockage.

[0043] Alternatively, by closing the regulating valves 17 of the remaining branch aeration systems to shut off aeration, and only opening the regulating valve of one branch, high-pressure cleaning water can be added to the backwash pipe 18. The high-pressure water enters the air inlet 1 of the jet aeration device through the regulating valve 17 and then through the one-way valve 3 in the air passage of the air inlet chamber 2, cleaning the sludge and other impurities inside the aeration device, and finally discharging through the mixing pipe 5. This operation can then be repeated sequentially to clean each branch. After cleaning, the accumulated water is discharged through the drain pipe at the drain valve 15 in the air inlet system, thereby achieving continuous and stable operation of the jet aeration device and preventing clogging.

[0044] If this patent uses terms such as "first" and "second" to define components, those skilled in the art should know that the use of "first" and "second" is merely for the convenience of describing this utility model and simplifying the description, and the above terms have no special meaning.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0046] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

Claims

1. A clog-resistant jet aeration device, characterized in that: It includes a mud-water mixing pipe connected to the outlet of the aerobic system, and a jet circulation pump, an aeration system, and an air intake system connected in sequence to the mud-water mixing pipe. The air intake system includes a blower, a pipeline check valve, an air vent valve and a backflush valve connected in sequence. An aeration header pipe is connected between the air vent valve and the backflush valve and leads to the aeration system through the aeration header pipe. An air vent pipe is also provided at the air vent valve. The aeration system is provided with multiple parallel aeration channels, and each channel includes a jet aeration device and a regulating valve. The air inlet of the jet aeration device is connected to the aeration main pipe through the provided aeration branch pipe, and the regulating valve is located at the interface between the aeration branch pipe and the aeration main pipe. The inlet of the jet aeration device is connected to the jet circulation pump via a water pipe.

2. The anti-clogging jet aeration device according to claim 1, characterized in that: The jet aeration device includes an air inlet chamber connected to the air inlet, a water inlet channel connected to the water inlet, and a mixing pipe for gas-liquid mixing. A partition is provided between the air inlet chamber and the water inlet channel. Multiple mixing pipes are arranged circumferentially and extend downwards from the inside to the outside. Corresponding air passages are provided on the partition, and each air passage is equipped with a one-way valve.

3. The anti-clogging jet aeration device according to claim 2, characterized in that: The mixing tube includes a contraction section, a throat, a mixing section, and a diffusion section arranged sequentially from the inside to the outside. The ventilation channel is located between the mixing section and the throat. The gas entering through the ventilation channel mixes with the liquid entering through the throat and is discharged through the mixing section and the diffusion section.

4. The anti-clogging jet aeration device according to claim 3, characterized in that: The inlet of the constriction section is wide, and its outlet narrows to match the width of the throat. The mixing section is located outside the airway and its width increases.

5. The anti-clogging jet aeration device according to claim 3, characterized in that: The mixing section includes a constant-width section and a flared section. The width of the constant-width section is greater than the width of the throat section, while the flared section gradually widens from the inside to the outside until its end is the same width as the diffuser section.

6. The anti-clogging jet aeration device according to claim 1, characterized in that: A backflush pipe is also connected to the outside of the backflush valve.

7. The anti-clogging jet aeration device according to claim 1, characterized in that: The regulating valve is a manual valve.

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