Cavitation conditioning device for sewage treatment

Abstract

The application relates to the technical field of sewage treatment, and discloses a cavitation conditioning device for sewage treatment, which comprises a sewage cylinder and a connecting pipe. A mixing mechanism is movably connected in the sewage cylinder. A chopping mechanism is fixedly connected to the side of the connecting pipe away from the sewage cylinder. A water supply pump is fixedly connected to the side of the chopping mechanism away from the sewage cylinder through the connecting pipe. The water supply pump is fixedly connected to the side of the first cavitation mechanism away from the sewage cylinder through the connecting pipe. The connecting pipe is used for sewage flow connection. When the sewage passes through the throat section, the flow rate reaches the peak value, the static pressure drops to the minimum, the strong primary cavitation is caused, a large number of micro-bubbles are generated, the jet flow containing the bubbles is sprayed to the side of the inverted cone top cover from the diffusion section, the inverted cone top cover guides the jet flow to flow downwards while forming the vortex flow in the vortex chamber, the centrifugal force and the shearing force are generated in the vortex flow, the bubbles are torn, and therefore the cavitation effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, more particularly to a cavitation conditioning device for sewage treatment. BACKGROUND

[0002] In sewage treatment, conditioning is a key pretreatment step, and its purpose is to destroy the colloidal structure of sludge and release the internal bound water, thereby significantly improving the subsequent dewatering performance. Currently, the widely used method is chemical conditioning, that is, by adding a large amount of inorganic flocculant or organic polymer flocculant to neutralize the negative charge on the surface of sludge particles to achieve flocculation. However, when using chemical conditioning, the addition of reagents increases the operating cost, and the introduction of chemicals further increases the sludge volume, increasing the difficulty and cost of subsequent disposal. Moreover, residual chemicals may cause secondary pollution to the environment and affect the resource utilization of sludge.

[0003] A more novel cavitation treatment method can avoid the above-mentioned shortcomings. Cavitation refers to the physical phenomenon of the growth, formation, and collapse of gas nuclei in a liquid when the local pressure is reduced. In the instant of bubble collapse, extreme high temperature, high pressure, and strong shear force, shock wave, and microjet are generated. By utilizing this effect to treat sludge, the huge hydraulic shear force generated by the collapse of cavitation bubbles can effectively tear the cell walls of microorganisms in sludge, breaking its colloidal structure and extracellular polymers. This process does not require or can significantly reduce the addition of reagents, avoiding secondary pollution and reducing treatment costs, and is beneficial to subsequent resource recovery.

[0004] Nowadays, when cavitation conditioning is performed, a cyclone is often used as a cavitation generator. However, the traditional cavitation generator has the problems of insufficient cavitation intensity, limited cavitation area, and low energy utilization rate when used, and therefore cannot achieve more thorough cavitation of sewage.

[0005] When sewage is subjected to cavitation treatment, if the water contains large impurities, the cavitation effect will be reduced. If the impurities are intercepted, blockage may occur. Moreover, whether the sludge inside the sewage has uniform concentration and particle distribution before entering the cavitation device will also determine the cavitation effect. Currently, it is not possible to uniformly treat the sludge in the sewage. SUMMARY

[0006] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a cavitation conditioning device for sewage treatment to solve the technical problems proposed in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A cavitation conditioning device for sewage treatment, comprising a sewage cylinder and a connecting pipe, a mixing mechanism is movably connected in the sewage cylinder, the mixing mechanism performs mixing work in the sewage cylinder, a chopping mechanism is fixedly connected to the side of the sewage cylinder through the connecting pipe, the mixed sewage in the mixing mechanism enters the chopping mechanism through the connecting pipe, a water supply pump is fixedly connected to the side of the chopping mechanism away from the sewage cylinder through the connecting pipe, the water supply pump is fixedly connected to a first cavitation mechanism away from the side of the sewage cylinder through the connecting pipe, the sewage in the chopping mechanism is pumped into the first cavitation mechanism by the water supply pump through the connecting pipe, and the connecting pipe connects the sewage cylinder, the chopping mechanism and the first cavitation mechanism.

[0008] The first cavitation mechanism comprises a contraction section for receiving sewage pumped out by the water supply pump, a throat section is fixedly connected to the side of the contraction section, an expansion section is fixedly connected to the side of the throat section away from the contraction section, a vortex chamber is fixedly connected to the side of the expansion section away from the throat section, a conical collecting cylinder is fixedly connected to the bottom end of the vortex chamber, and an inverted conical top cover is fixedly connected to the top end in the vortex chamber.

[0009] In a preferred embodiment, a booster pump is fixedly connected to the bottom end of the first cavitation mechanism, a second cavitation mechanism is fixedly connected to the side of the booster pump, a discharge pipe is fixedly connected to the bottom end of the second cavitation mechanism, the first cavitation mechanism and the second cavitation mechanism are of the same structure, and the sewage discharged from the first cavitation mechanism is injected into the second cavitation mechanism after being pressurized by the booster pump.

[0010] In a preferred embodiment, the expansion section is located in the middle of the side of the inverted conical top cover, the inverted conical top cover is located at the top end of the vortex chamber, the bottom end of the inverted conical top cover is located in the middle of the inner side of the vortex chamber, and the bottom end of the conical collecting cylinder is fixedly connected to the top end of the discharge pipe.

[0011] In a preferred embodiment, the chopping mechanism comprises a connecting cylinder through which sewage enters, a sealing cover is fixedly connected to the top end of the connecting cylinder, a servo motor is fixedly connected to the top end of the sealing cover, a rotating shaft is fixedly connected to the bottom end of the servo motor, a stabilizing sleeve is fixedly connected to the bottom end of the rotating shaft, a cutting blade is fixedly connected to the bottom end of the stabilizing sleeve, a filter plate is movably connected to the side of the stabilizing sleeve, and the sewage filtered by the cutting blade flows into the water supply pump.

[0012] In a preferred embodiment, the cutting blade is located at the bottom end of the side of the filter plate, the cutting blade chops the impurities intercepted by the filter plate, the cutting blade forms an angle of forty degrees with the horizontal direction, and the side of the cutting blade is fixedly connected to the inside of the connecting cylinder.

[0013] In a preferred implementation form, the bottom end of the connecting cylinder is fixedly connected with a placing cylinder, the bottom end of the placing cylinder is fixedly connected with a sewage discharge pipe, and the side of the sewage discharge pipe is fixedly connected with an electric control valve.

[0014] In a preferred implementation form, the mixing mechanism comprises a powered output motor, the top end of the output motor is fixedly connected with an output shaft, the bottom end of the side of the output shaft is fixedly connected with an inclined blade turbine group, the middle of the side of the output shaft is fixedly connected with a first blade group, and the top end of the side of the output shaft is fixedly connected with a second blade group.

[0015] In a preferred implementation form, the top end of the output shaft is movably connected with a stabilizing plate, the side of the stabilizing plate is fixedly connected with the inside of the sewage cylinder, the inclined blade turbine group is located at the bottom end inside the sewage cylinder, the first blade group is located at the middle inside the sewage cylinder, and the second blade group is located at the top end inside the sewage cylinder.

[0016] Technical effects and advantages of the present application:

[0017] The present application is provided with a throat section, a diffusion section, a vortex chamber and an inverted cone top cover. When the sewage passes through the throat section, the flow rate reaches the peak value, the static pressure drops to the minimum, and the strong primary cavitation is caused, a large number of micro-bubbles are generated, the jet flow containing the bubbles is sprayed from the diffusion section to the side of the inverted cone top cover, the inverted cone top cover guides the jet flow to flow downward while forming a vortex in the vortex chamber, the centrifugal force and shear force are generated in the vortex, and the bubbles are torn, so that the cavitation effect is improved.

[0018] The sewage is temporarily in the sewage cylinder, at this time, the output motor is started and drives the output shaft to rotate, the output shaft drives the inclined blade turbine group, the first blade group and the second blade group on the side to rotate when rotating, the inclined blade turbine group stirs up various impurities at the bottom end inside the sewage cylinder, so that the accumulation is avoided, and the first blade group and the second blade group mix the stirred impurities with the sewage uniformly, so that the sewage flowing out of the sewage cylinder is more uniform.

[0019] The present application is provided with a connecting cylinder, a cutting blade, a cutting blade and a filter plate. The mixed sewage flows into the connecting cylinder, the sewage flows through the filter plate when flowing in the connecting cylinder, the servo motor is started and drives the rotating shaft to rotate, the rotating shaft drives the cutting blade to rotate through the stabilizing sleeve when rotating, the cutting blade rotates on the side of the filter plate, the large-size impurities intercepted by the filter plate are cut by the rotating cutting blade, and the cut impurities can flow into the first cavitation mechanism after passing through the filter plate for cavitation treatment, so that the quality of the cavitation treatment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole front structure schematic diagram of the present application.

[0021] Figure 2 The schematic diagram of the overall back structure of the present application.

[0022] Figure 3 The schematic diagram of the cavitation mechanism structure of the present application.

[0023] Figure 4 The schematic diagram of the internal structure of the first cavitation mechanism of the present application.

[0024] Figure 5 The schematic diagram of the overall structure of the chopping mechanism of the present application.

[0025] Figure 6 The schematic diagram of the internal structure of the chopping mechanism of the present application.

[0026] Figure 7 The schematic diagram of the structure of the cutting blade and filter plate of the present application.

[0027] Figure 8 The schematic diagram of the mixing mechanism structure of the present application.

[0028] The reference signs are as follows: 1, sewage cylinder; 2, mixing mechanism; 201, output motor; 202, output shaft; 203, stabilizing plate; 204, inclined blade turbine group; 205, first blade group; 206, second blade group; 3, chopping mechanism; 301, connecting cylinder; 302, sealing cover; 303, servo motor; 304, rotating shaft; 305, stabilizing sleeve; 306, cutting blade; 307, filter plate; 308, placing cylinder; 309, sewage discharge pipe; 310, electric control valve; 4, water supply pump; 5, first cavitation mechanism; 501, contraction section; 502, throat section; 503, diffusion section; 504, vortex chamber; 505, inverted conical top cover; 506, conical collecting cylinder; 6, second cavitation mechanism; 7, connecting pipe; 8, booster pump; 9, discharge pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and the cavitation conditioning device for sewage treatment involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0030] REFERENCE Figure 1 AND Figure 2The application provides a cavitation conditioning device for sewage treatment, which comprises a sewage cylinder 1 and a connecting pipe 7, a mixing mechanism 2 movably connected in the sewage cylinder 1, the mixing mechanism 2 performing mixing work in the sewage cylinder 1, a chopping mechanism 3 fixedly connected to the side of the sewage cylinder 1 through the connecting pipe 7, mixed sewage in the mixing mechanism 2 entering the chopping mechanism 3 through the connecting pipe 7, a water supply pump 4 fixedly connected to the side of the chopping mechanism 3 away from the sewage cylinder 1 through the connecting pipe 7, a first cavitation mechanism 5 fixedly connected to the side of the water supply pump 4 away from the sewage cylinder 1 through the connecting pipe 7, the sewage in the chopping mechanism 3 being pumped into the first cavitation mechanism 5 by the water supply pump 4, the connecting pipe 7 connecting the sewage cylinder 1, the chopping mechanism 3 and the first cavitation mechanism 5, a booster pump 8 fixedly connected to the bottom end of the first cavitation mechanism 5, a second cavitation mechanism 6 fixedly connected to the side of the booster pump 8, a discharge pipe 9 fixedly connected to the bottom end of the second cavitation mechanism 6, the first cavitation mechanism 5 being the same in structure as the second cavitation mechanism 6, and the sewage discharged from the first cavitation mechanism 5 being injected into the second cavitation mechanism 6 after being pressurized by the booster pump 8.

[0031] In the application, the connecting pipe 7 is used for sewage flow connection, so that the sewage can flow normally during cavitation treatment, the second cavitation mechanism 6 is the same in structure as the first cavitation mechanism 5, therefore, the sewage can be subjected to twice cavitation treatment, so that the treatment effect of the sewage cavitation is more thorough, the sludge particle structure can be gradually destroyed through multiple treatments, the bound water can be converted into free water, the subsequent dehydration efficiency is improved, and the second cavitation mechanism 6 is pressurized by the booster pump 8 before cavitation treatment, so that the flow rate of the second cavitation mechanism 6 during jet flow is improved, and the sewage discharged from the first cavitation mechanism 5 cannot be subjected to more thorough cavitation conditioning due to the reduced flow rate.

[0032] With reference to Figure 3 And Figure 4 The first cavitation mechanism 5 comprises a contraction section 501 for receiving sewage pumped out by the water supply pump 4, a throat section 502 fixedly connected to the side of the contraction section 501, an expansion section 503 fixedly connected to the side of the throat section 502 away from the contraction section 501, a vortex chamber 504 fixedly connected to the side of the expansion section 503 away from the throat section 502, a conical collecting cylinder 506 fixedly connected to the bottom end of the vortex chamber 504, an inverted conical top cover 505 fixedly connected to the top end in the vortex chamber 504, the expansion section 503 being located at the middle of the side of the inverted conical top cover 505, the inverted conical top cover 505 being located at the top end of the vortex chamber 504, the bottom end of the inverted conical top cover 505 being located at the middle of the inner side of the vortex chamber 504, and the bottom end of the conical collecting cylinder 506 being fixedly connected to the top end of the discharge pipe 9.

[0033] In the embodiment of the present application, when the sewage passes through the contraction section 501 and enters the small-diameter throat section 502, the flow rate instantaneously increases to a peak value, and therefore the static pressure in the sewage drops to a minimum, thereby triggering a strong cavitation effect, and then generating a large number of micro-bubbles. The jet flow containing the bubbles is sprayed from the diffusion section 503 to the side of the inverted cone top cover 505. The shape of the inverted cone top cover 505 guides the jet flow to flow downward while forming a vortex below the inverted cone top cover 505. The bottom end of the inverted cone top cover 505 is located in the middle of the inside of the vortex chamber 504. Therefore, the vortex will remain for a certain period of time below the vortex chamber 504, and under the continuous replenishment of the jet flow, the vortex is maintained to exist. The centrifugal force and shear force generated inside the vortex tear the bubbles inside the vortex, thereby again playing a cavitation effect, so that the first cavitation mechanism 5 can play a good cavitation conditioning effect.

[0034] With reference to Figure 5 , Figure 6 and Figure 7 , the chopping mechanism 3 includes a connecting cylinder 301 through which the sewage enters. The top end of the connecting cylinder 301 is fixedly connected with a sealing cover 302. The top end of the sealing cover 302 is fixedly connected with a servo motor 303. The bottom end of the servo motor 303 is fixedly connected with a rotating shaft 304. The bottom end of the rotating shaft 304 is fixedly connected with a stabilizing sleeve 305. The bottom end of the stabilizing sleeve 305 is fixedly connected with a cutting blade 306. The side surface of the stabilizing sleeve 305 is movably connected with a filter plate 307. The sewage flows into the water supply pump 4 after being filtered by the cutting blade 306. The bottom end of the cutting blade 306 located on the side of the filter plate 307 chops the impurities intercepted by the filter plate 307. The cutting blade 306 forms a forty-degree angle with the horizontal direction. The side surface of the cutting blade 306 is fixedly connected with the inside of the connecting cylinder 301. The bottom end of the connecting cylinder 301 is fixedly connected with a placing cylinder 308. The bottom end of the placing cylinder 308 is fixedly connected with a sewage discharge pipe 309. The side surface of the sewage discharge pipe 309 is fixedly connected with an electric control valve 310. The electric control valve 310 is an electrically controlled opening and closing valve.

[0035] In the embodiment of the present application, when the rotating shaft 304 rotates, the cutting blade 306 rotates through the stabilizing sleeve 305. When the sewage passes through the filter plate 307, the large-size impurities are intercepted on the side of the filter plate 307, and the cutting blade 306 rotates on the side of the filter plate 307, thereby chopping the large-size impurities. The chopped impurities can pass through the filter plate 307. At this time, the sewage that is mixed uniformly and does not contain size impurities is discharged from the connecting cylinder 301. The cutting blade 306 forms a forty-degree angle with the horizontal direction, which facilitates the flow of the sewage through the cutting blade 306. Some uncrushed impurities will accumulate in the placing cylinder 308. When there are many impurities, the electric control valve 310 is started to open the electric control valve 310. After the impurities in the placing cylinder 308 are discharged, the electric control valve 310 is closed, so that the present application can perform long-time sewage treatment without the occurrence of blockage.

[0036] Referring to Figure 8 The mixing mechanism 2 comprises an output motor 201 that can be powered, the top end of the output motor 201 is fixedly connected with an output shaft 202, the bottom end of the side of the output shaft 202 is fixedly connected with an inclined blade turbine set 204, the middle part of the side of the output shaft 202 is fixedly connected with a first blade set 205, the top end of the side of the output shaft 202 is fixedly connected with a second blade set 206, the top end of the output shaft 202 is movably connected with a stabilizing plate 203, the side of the stabilizing plate 203 is fixedly connected with the inside of the sewage cylinder 1, the inclined blade turbine set 204 is located at the bottom end inside the sewage cylinder 1, the first blade set 205 is located at the middle inside the sewage cylinder 1, and the second blade set 206 is located at the top end inside the sewage cylinder 1.

[0037] In the embodiment of the application, the inclined blade turbine set 204 stirs up the impurities accumulated at the bottom of the sewage cylinder 1 when rotating, the inclined blade turbine set 204 is located at the bottom end inside the sewage cylinder 1, the first blade set 205 is located at the middle inside the sewage cylinder 1, and the first blade set 205 and the second blade set 206 can mix the stirred impurities and sewage uniformly, so that the sewage entering the sewage cylinder 1 has uniform concentration, viscosity and particle distribution when the sewage finally performs cavitation reaction, thereby ensuring the stability and high efficiency of the cavitation treatment effect.

[0038] The working principle of the application is as follows: the sewage is temporarily placed in the sewage cylinder 1, when the sewage is treated, the output motor 201 is started and drives the output shaft 202 to rotate, the output shaft 202 drives the bottom inclined blade turbine set 204, the middle first blade set 205 and the top second blade set 206 to rotate when rotating, the inclined blade turbine set 204 stirs up the impurities accumulated at the bottom of the sewage cylinder 1, after the impurities are stirred up, the first blade set 205 and the second blade set 206 mix the stirred impurities and sewage uniformly, so that the connecting pipe 7 discharges the mixed and uniform sewage into the cutting mechanism 3, and the newly added sewage in the sewage cylinder 1 is also discharged from the connecting pipe 7 after being mixed and uniform;

[0039] The sewage discharged through the connecting pipe 7 enters the connecting cylinder 301, after the sewage enters the inside of the connecting cylinder 301, the servo motor 303 is started at this time, the servo motor 303 drives the rotating shaft 304 to rotate after being started, the rotating shaft 304 drives the cutting blade 306 to rotate through the stabilizing sleeve 305 when rotating, the large-size impurities are intercepted on the side of the filter plate 307 when the sewage passes through the filter plate 307, and the cutting blade 306 rotates on the side of the filter plate 307, so that the large-size impurities are cut, the cut impurities can pass through the filter plate 307, at this time, the sewage that is mixed and uniform and does not contain size impurities is discharged from the connecting cylinder 301;

[0040] The sewage discharged through the connecting cylinder 301 is pumped by the water supply pump 4 into the contraction section 501. When the sewage flows through the contraction section 501 and inside the throat section 502, the flow rate reaches a peak, and the static pressure of the sewage drops to a minimum, at which time strong primary cavitation is triggered, generating a large number of micro-bubbles. The jet flow in the throat section 502 contains bubbles, and the jet flow containing bubbles is sprayed from the diffusion section 503 to the side of the inverted cone top cover 505. The shape of the inverted cone top cover 505 itself guides the jet flow to flow downward while forming a vortex below the inverted cone top cover 505. The vortex exists inside the vortex chamber 504, at which time centrifugal force and shear force are generated inside the vortex, causing the bubbles inside to be torn apart, thereby again playing a cavitation effect. After one cavitation treatment, the sewage after cavitation treatment flows into the booster pump 8, is pressurized by the booster pump 8, and then enters the second cavitation mechanism 6. After being treated by the second cavitation mechanism 6 again, the sewage is thoroughly cavitated. The sewage after cavitation treatment is discharged from the discharge pipe 9 for subsequent treatment, reducing the difficulty and cost of subsequent treatment, and improving the quality of the sewage after treatment.

[0041] Finally: The above is only the preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cavitation conditioning device for sewage treatment, comprising a sewage cylinder (1) and a connecting pipe (7), characterized in that: The inside of the sewage cylinder (1) is movably connected with a mixing mechanism (2), which performs mixing work in the inside of the sewage cylinder (1); the side of the sewage cylinder (1) is fixedly connected with a chopping mechanism (3) through a connecting pipe (7); the mixed sewage in the mixing mechanism (2) enters the chopping mechanism (3) through the connecting pipe (7); the side, away from the sewage cylinder (1), of the chopping mechanism (3) is fixedly connected with a water supply pump (4) through the connecting pipe (7); the side, away from the sewage cylinder (1), of the water supply pump (4) is fixedly connected with a first cavitation mechanism (5) through the connecting pipe (7); the sewage in the chopping mechanism (3) is pumped into the first cavitation mechanism (5) by the water supply pump (4); the connecting pipe (7) connects the sewage cylinder (1), the chopping mechanism (3) and the first cavitation mechanism (5); the first cavitation mechanism (5) comprises a converging section (501) for receiving the sewage pumped out by the water supply pump (4); the side of the converging section (501) is fixedly connected with a throat section (502); the side, away from the converging section (501), of the throat section (502) is fixedly connected with a diverging section (503); the side, away from the throat section (502), of the diverging section (503) is fixedly connected with a vortex chamber (504); the bottom end of the vortex chamber (504) is fixedly connected with a conical collecting cylinder (506); the top end inside the vortex chamber (504) is fixedly connected with an inverted conical top cover (505). The bottom end of the first cavitation mechanism (5) is fixedly connected with a booster pump (8); the side of the booster pump (8) is fixedly connected with a second cavitation mechanism (6); the bottom end of the second cavitation mechanism (6) is fixedly connected with a discharge pipe (9); the first cavitation mechanism (5) and the second cavitation mechanism (6) have the same structure; the sewage discharged from the first cavitation mechanism (5) is injected into the second cavitation mechanism (6) after being pressurized by the booster pump (8). The diverging section (503) is located at the middle of the side of the inverted conical top cover (505); the inverted conical top cover (505) is located at the top end of the vortex chamber (504); the bottom end of the inverted conical top cover (505) is located at the middle of the inside of the vortex chamber (504); and the bottom end of the conical collecting cylinder (506) is fixedly connected with the top end of the discharge pipe (9).

2. A cavitation conditioning device for sewage treatment according to claim 1, characterized in that: The chopping mechanism (3) comprises a connecting cylinder (301) for allowing sewage to enter; the top end of the connecting cylinder (301) is fixedly connected with a sealing cover (302); the top end of the sealing cover (302) is fixedly connected with a servo motor (303); the bottom end of the servo motor (303) is fixedly connected with a rotating shaft (304); the bottom end of the rotating shaft (304) is fixedly connected with a stabilizing sleeve (305); the bottom end of the stabilizing sleeve (305) is fixedly connected with a cutting blade (306); the side of the stabilizing sleeve (305) is movably connected with a filter plate (307); and the sewage flows into the water supply pump (4) after being filtered by the cutting blade (306).

3. A cavitation conditioning device for sewage treatment according to claim 2, characterized in that: The cutting blade (306) is located at the bottom end of the side of the filter plate (307), and the cutting blade (306) cuts the impurities intercepted by the filter plate (307), the cutting blade (306) is at an angle of forty degrees with the horizontal direction, and the side of the cutting blade (306) is fixedly connected with the inside of the connecting cylinder (301).

4. A cavitation conditioning device for sewage treatment according to claim 3, characterized in that: The bottom end of the connecting cylinder (301) is fixedly connected with a placing cylinder (308), the bottom end of the placing cylinder (308) is fixedly connected with a blowdown pipe (309), the side of the blowdown pipe (309) is fixedly connected with an electric control valve (310), and the electric control valve (310) is an electric control opening and closing valve.

5. The cavitation conditioning device for wastewater treatment of claim 1, wherein: The mixing mechanism (2) comprises a powered output motor (201), the top end of the output motor (201) is fixedly connected with an output shaft (202), the bottom end of the side of the output shaft (202) is fixedly connected with an inclined blade turbine group (204), the middle of the side of the output shaft (202) is fixedly connected with a first blade group (205), and the top end of the side of the output shaft (202) is fixedly connected with a second blade group (206).

6. A cavitation conditioning device for sewage treatment according to claim 5, characterized in that: The top end of the output shaft (202) is movably connected with a stabilizing plate (203), the side of the stabilizing plate (203) is fixedly connected with the inside of the sewage cylinder (1), the inclined blade turbine group (204) is located at the bottom end of the inside of the sewage cylinder (1), the first blade group (205) is located at the middle of the inside of the sewage cylinder (1), and the second blade group (206) is located at the top end of the inside of the sewage cylinder (1).

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