An environmentally friendly bacterial agent for purifying eutrophic water and a preparation method and device thereof

Abstract

The present application relates to an environmentally friendly bacterial agent for purifying eutrophic water and a preparation method and device thereof, and to the field of environmentally friendly bacterial agents and production thereof, which comprises a mixing barrel having a barrel body and a barrel cover; a rotating shaft connected to the barrel cover in a first direction for sliding, and the rotating shaft can rotate around its own axis on the barrel cover; a plurality of first stirring components connected to the rotating shaft, and the plurality of first stirring components are evenly distributed in the rotation circumference of the rotating shaft; and a driving component for driving the rotating shaft to slide and rotate along the barrel cover. The present application has the effect of improving the mixing uniformity of the environmentally friendly bacterial agent.

Description

Technical Field

[0001] The present application relates to the field of environmentally friendly bacterial agents and their production, and in particular to an environmentally friendly bacterial agent for purifying eutrophic water and a preparation method and device thereof. Background Art

[0002] The enrichment of nitrogen and phosphorus nutrients in the water body causes the rapid reproduction of algae and other plankton, the dissolved oxygen in the water body decreases, and causes water pollution. Such water bodies are called eutrophic water bodies. Such water bodies may destroy the ecological balance. Therefore, such water bodies need to be managed;

[0003] In order to treat eutrophic water bodies, environmentally friendly bacteria agents are added to the water. For water bodies that need to be treated over a large area, the amount of environmentally friendly bacteria agents that need to be added to the water body also increases. Therefore, large quantities of environmentally friendly bacteria agents with a high degree of mixing are required.

[0004] At present, in order to fully mix the various powders and liquids in the environmentally friendly bacterial agent, a stirring rod is placed in the stirring barrel, and the stirring rod is rotated to stir the various substances in the stirring barrel. However, the above method only has rotating stirring, which may cause the problem of inconsistent stirring degree in the upper and lower parts of the barrel, resulting in poor uniformity of the environmentally friendly bacterial agent. Therefore, providing a preparation device that can improve the mixing degree of the environmentally friendly bacterial agent is an urgent problem to be solved. Summary of the invention

[0005] In order to improve the mixing uniformity of an environmentally friendly bacterial agent, the present application provides an environmentally friendly bacterial agent for purifying eutrophic water, and a preparation method and device thereof.

[0006] In the first aspect, the present application provides a device for preparing an environmentally friendly bacterial agent for purifying eutrophic water, which adopts the following technical solution:

[0007] A preparation device for an environmentally friendly bacterial agent for purifying eutrophic water, comprising:

[0008] A mixing barrel having a barrel body and a barrel cover;

[0009] A rotating shaft slidably connected to the barrel cover along a first direction, and the rotating shaft can rotate around its own axis on the barrel cover;

[0010] A plurality of first stirring components connected to the rotating shaft, wherein the plurality of first stirring components are evenly distributed in the rotation circumferential direction of the rotating shaft;

[0011] And, a driving assembly for driving the rotating shaft to slide and rotate along the barrel cover.

[0012] Optionally, the first stirring component includes a stirring rod connected to the rotating shaft and a plurality of spikes fixedly connected to the stirring rod; the stirring rod rotates synchronously with the rotating shaft.

[0013] Optionally, a ring is coaxially slidably connected to the rotating shaft, the peripheral wall of the rotating shaft is provided with a convex strip arranged parallel to the first direction, and the inner wall of the ring is provided with a key groove adapted to the convex strip; both ends of the convex strip are provided with a stop block in a direction away from the rotating shaft to prevent the convex strip from detaching from the ring.

[0014] Optionally, a second stirring component is further included, wherein the second stirring component includes:

[0015] A connecting rod with one end fixedly connected to the stirring rod and the other end extending toward one side of the bottom of the stirring barrel;

[0016] A bottom plate fixedly connected to an end of the connecting rod away from the stirring rod;

[0017] A top connecting ring sleeved on the outer circumference of the connecting rod;

[0018] An annular flexible cloth with one end opening fixedly connected to the bottom plate and the other end opening fixedly connected to the top connecting ring; the inner cavity of the annular flexible cloth forms a water storage area;

[0019] And, a synchronous sliding assembly connected between the top connecting ring and the bottom end of the rotating shaft, the top connecting ring moves synchronously with the rotating shaft along the first direction through the synchronous sliding assembly, so that the top connecting ring can be adjusted between the bottom posture and the top posture.

[0020] Optionally, the synchronous sliding component includes:

[0021] One end of the telescopic rod is connected to the top connecting ring, and the other end is connected to the end of the rotating shaft close to the bottom wall of the mixing barrel;

[0022] And a compression spring, wherein two ends of the compression spring are respectively fixedly connected to one end of the telescopic rod.

[0023] Optionally, one end of the telescopic rod is hinged to the top connecting ring, and the other end is hinged to the rotating shaft; the hinge axis of the telescopic rod along the top connecting ring and the hinge axis of the telescopic rod along the rotating shaft are both parallel to the first direction.

[0024] Optionally, a traction assembly is further included, and the traction assembly includes:

[0025] A leaf plate fixedly connected to the bottom plate;

[0026] One end is fixedly connected to the top connecting ring, and the other end is slidably connected to the extension spring of the page plate.

[0027] In the second aspect, the present application provides an environmentally friendly bacterial agent for purifying eutrophic water, which adopts the following technical solution:

[0028] An environmentally friendly bacterial agent for purifying eutrophic water is prepared using the aforementioned preparation device, and is characterized in that the environmentally friendly bacterial agent includes 10% to 20% of a mixture of sodium peroxide and calcium peroxide in a ratio of 3:1, 15% to 30% of carbon powder, 15% to 30% of denitrifying bacteria and 20% to 30% of silicate cement.

[0029] In a third aspect, the present application provides a method for preparing an environmentally friendly bacterial agent for purifying eutrophic water, which is prepared using the aforementioned preparation device and specifically comprises the following steps:

[0030] S1: Smash:

[0031] After mixing wood and bagasse, put them into a grinding machine for crushing to obtain initial powder;

[0032] S2: Flour milling:

[0033] The initial powder is soaked in a sodium hydroxide solution for 10 hours to obtain a wet material, wherein the concentration of the sodium hydroxide solution is 3%;

[0034] The wet material is washed with water until it becomes neutral to obtain a neutral material;

[0035] Drying the neutral material to obtain dry powder;

[0036] S3: Hybrid:

[0037] Adding dry powder into the mixing barrel;

[0038] Add denitrifying bacteria to the mixing tank;

[0039] Add a mixture of sodium peroxide and calcium peroxide into a mixing tank, wherein the ratio of sodium peroxide to calcium peroxide is 3:1;

[0040] Add nitrate cement to the mixing bucket;

[0041] Add water to mixing bucket;

[0042] The first stirring component and the second stirring component are used to stir the materials in the stirring barrel to obtain an environmentally friendly bacterial agent.

[0043] In summary, the present application includes at least one of the following beneficial technical effects:

[0044] 1. By setting a stirring component that can both rotate and move up and down, the uniformity of mixing can be improved;

[0045] 2. By setting up a flexible annular flexible cloth, it can not only pull the liquid at the bottom of the mixing barrel upwards as it moves up and down and rotates with the rotating shaft, but also intermittently squeeze and reflux the water in the water storage area with the thrust of water waves, so that liquids at different heights can be evenly mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0047] Figure 2 is a schematic structural diagram of the first stirring assembly in an embodiment of the present application;

[0048] Figure 3 is a schematic structural diagram of a rotating shaft and a first stirring assembly in an embodiment of the present application;

[0049] Figure 4 yes Figure 2 A magnified view of part A;

[0050] Figure 5 is a schematic diagram of the structure of a synchronous sliding assembly in an embodiment of the present application;

[0051] Figure 6 It is a schematic diagram of the structure of the traction assembly in the embodiment of the present application.

[0052] Explanation of the reference numerals: 1. mixing barrel; 11. barrel body; 12. barrel cover; 121. perforation; 2. rotating shaft; 21. convex strip; 22. block; 3. driving assembly; 31. linear motor; 311. guide part; 312. sliding part; 32. lifting plate; 33. motor; 4. first stirring assembly; 41. stirring rod; 42. spike; 43. collar; 431. keyway; 5. second stirring assembly; 51. connecting rod; 52. bottom plate; 53. top connecting ring; 54. annular flexible cloth; 541. water storage area; 6. synchronous sliding assembly; 61. fixing ring; 62. telescopic rod; 63. compression spring; 7. traction assembly; 71. leaf plate; 711. guide groove; 72. tension spring; 721. sliding ball. DETAILED DESCRIPTION

[0053] The following is combined with Figure 1-6 The present application is further described in detail. For ease of description, the present application introduces directional words such as a first direction, a second direction, and a third direction to form a three-dimensional reference direction. The directional words used, such as "a first direction, a second direction, and a third direction", can be specifically shown with reference to the figure, where X represents the first direction X, Y represents the second direction Y, and Z represents the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0054] The present application embodiment discloses a device for preparing an environmentally friendly bacterial agent for purifying eutrophic water. Figure 1 and Figure 2 The device for preparing an environmentally friendly bacterial agent for purifying eutrophic water comprises a mixing barrel 1 having a barrel body 11 and a barrel cover 12, a rotating shaft 2 passing through the barrel cover 12, a driving component 3 for driving the rotating shaft 2 to slide and rotate along the barrel cover 12, and a first mixing component 4 installed on the rotating shaft 2; in order to facilitate the feeding of materials into the mixing barrel 1, a feeding channel for the materials to enter can be provided on the barrel cover 12, and in order to facilitate the discharge of materials from the mixing barrel 1, a discharging channel for the materials to be discharged can also be provided on the bottom wall of the mixing barrel 1, and a valve is provided on the discharging channel.

[0055] Reference Figure 1 and Figure 2 The rotating shaft 2 is arranged parallel to the first direction, and a through hole 121 is formed on the barrel cover 12 along the first direction. The rotating shaft 2 is passed through the through hole 121. The rotating shaft 2 can slide in the through hole 121 along the first direction and can rotate in the through hole 121 along the axis of the rotating shaft 2;

[0056] The driving assembly 3 includes a linear motor 31 having a guide portion 311 and a sliding portion 312, a lifting plate 32 fixedly connected to the sliding portion 312, and a motor 33 fixedly connected to the lifting plate 32; the driving direction of the linear motor 31 is parallel to the first direction, that is, the sliding portion 312 can slide along the first direction on the guide portion 311, and the lifting plate 32 fixedly connected to the sliding portion 312 will move synchronously with the sliding portion 312; the rotating shaft 2 rotates around its own axis and is connected to the lifting plate 32, the housing of the motor 33 is fixedly connected to the lifting plate 32, and the output shaft of the motor 33 passes through the lifting plate 32 and is fixedly connected to the rotating shaft 2, so that the rotating shaft 2 can be driven to rotate by the motor 33; thereby, the rotating shaft 2 can be driven by the motor 33 to rotate in the through hole 121, and the rotating shaft 2 can be driven by the linear motor 31 to slide in the through hole 121 along the first direction.

[0057] Reference Figure 2 and Figure 3 In the rotation circumference of the rotating shaft 2, a plurality of first stirring components 4 are provided. In the present disclosure, preferably, three are evenly distributed along the rotation circumference of the rotating shaft 2. The first stirring component 4 includes a stirring rod 41 and a plurality of spikes 42 fixedly connected to the peripheral wall of the stirring rod 41. The stirring rod 41 is arranged perpendicular to the rotating shaft 2. The spikes 42 are convexly arranged on the rod wall of the stirring rod 41, and the end of the spikes 42 away from the stirring rod 41 is a pointed head;

[0058] The stirring rod 41 can slide along the rotating shaft 2 in a first direction. In order to enable the stirring rod 41 to slide on the rotating shaft 2 in the first direction, a ring 43 that can slide in the first direction is coaxially sleeved on the outer periphery of the rotating shaft 2, and a key groove 431 is recessed on the inner wall of the ring 43. A convex strip 21 that matches the key groove 431 is fixedly connected to the peripheral wall of the rotating shaft 2, so that the ring 43 can slide on the rotating shaft 2 in the first direction. In addition, since the convex strip 21 and the inner wall of the key groove 431 abut against each other, the ring 43 can rotate synchronously with the rotating shaft 2; the stirring rod 41 is fixedly connected to the peripheral wall of the ring 43, so that the stirring rod 41 rotates synchronously with the ring 43 and the rotating shaft 2; in order to prevent the convex strip 21 from detaching from the key groove 431, a stopper 22 is fixedly provided at both ends of the convex strip 21 toward the end away from the rotating shaft 2, and the stopper 22 can prevent the convex strip 21 from sliding in the first direction to separate from the ring 43.

[0059] Reference Figure 3 and Figure 4 In order to further improve the stirring uniformity, in some embodiments of the present application, a second stirring assembly 5 is further included. Each second stirring assembly 5 is connected to a corresponding first stirring assembly 4. The second stirring assembly 5 includes a connecting rod 51, a bottom plate 52, a top connecting ring 53 and a ring-shaped flexible cloth 54.

[0060] The connecting rod 51 is arranged parallel to the rotating shaft 2, one end of the connecting rod 51 is a fixed end, and the other end is a free end. The fixed end of the connecting rod 51 is fixedly connected to the end of the stirring rod 41 away from the rotating shaft 2, and the free end is located on the side of the stirring rod 41 close to the bottom of the mixing barrel 1 in the first direction; the bottom plate 52 is fixedly connected to the free end of the connecting rod 51, and the top connecting ring 53 is located on the outer periphery of the connecting rod 51, and the top connecting ring 53 can move relative to the connecting rod 51 in the first direction; the annular flexible cloth 54 is fixedly connected to the bottom plate 52 at one end with an opening, and fixedly connected to the top connecting ring 53 at the other end with an opening coaxially, so as to form a water storage area 541 with an opening toward one side of the barrel cover 12 between the bottom plate 52 and the annular flexible cloth 54. Preferably, the inner diameter of the top connecting ring 53 is larger than the outer diameter of the bottom plate 52, and the inner diameter of the opening of the annular flexible cloth 54 installed at one end of the bottom plate 52 is smaller than the inner diameter of the opening of the annular flexible cloth 54 installed at one end of the top connecting ring 53.

[0061] Refer to 4 and Figure 5 In order to enable the top connecting ring 53 and the connecting rod 51 to move in the first direction, in some embodiments of the present application, a synchronous sliding assembly 6 is further included, wherein the synchronous sliding assembly 6 includes a fixing ring 61 coaxially fixedly connected to one end of the rotating shaft 2 close to the bottom of the mixing barrel 1, a telescopic rod 62 hinged to the top connecting ring 53 at one end and hinged to the fixing ring 61 at the other end, and compression springs 63 fixedly connected to one end of the telescopic rod 62 at both ends;

[0062] The telescopic rod 62 is perpendicular to the first direction, and the telescopic rod 62 is elastically telescopic along the length direction of the telescopic rod 62 itself through the compression spring 63; the hinge axis of the telescopic rod 62 along the fixing ring 61 and the hinge axis of the telescopic rod 62 along the top connecting ring 53 are both parallel to the first direction;

[0063] When the fixing ring 61 moves along the first direction with the rotating shaft 2, the fixing ring 61 can be adjusted between the bottom posture and the top posture; for the convenience of description, a stopper 22 on the convex strip 21 close to the bottom wall of the mixing barrel 1 is named as the lower stopper 22:

[0064] In the bottom posture, the fixing ring 61 and the bottom plate 52 are both in contact with the bottom of the mixing barrel 1, and the top connecting ring 53 also moves to the bottom of the mixing barrel 1 with the fixing ring 61, and a movable gap is formed between the lower stopper 22 and the sleeve ring 43 in the first direction; a counterweight block is embedded in the bottom plate 52 for making the bottom plate 52 contact with the bottom wall of the mixing barrel 1;

[0065] When adjusting from the bottom posture to the top posture, the top connecting ring 53, the fixing ring 61 and the lower stopper 22 rise synchronously with the rotating shaft 2 until the lower stopper 22 contacts the sleeve ring 43, and the fixing ring 61 can be adjusted to the top posture; subsequently, the rotating shaft 2 continues to rise, and the first stirring component 4, the second stirring component 5 and the synchronous sliding component 6 can be driven to rise synchronously;

[0066] During the downward movement of the rotating shaft 2, the bottom plate 52 first contacts the bottom of the mixing barrel 1. Then, as the rotating shaft 2 continues to descend, the lower stopper 22 is easily separated from the sleeve 43 until the fixing ring 61 contacts the bottom of the mixing barrel 1, and the fixing ring 61 can be readjusted to the bottom posture.

[0067] Reference Figure 4 and Figure 5 In the present disclosure, as the top connecting ring 53 rises with the fixing ring 61, the liquid at the bottom of the mixing barrel 1 can be pulled upward. In the process of pulling upward and rotating, as the rotation speed alternates or rotates forward and backward, the annular flexible cloth 54 will shake due to the flexibility of the annular flexible cloth 54, thereby squeezing the liquid in the water storage area 541 to leak out. At the same time, liquids at different heights will also be replenished into the water storage area 541. Therefore, as the annular flexible cloth 54 rises, liquids at different heights can be fully mixed to improve the mixing degree of the liquids. In addition, since a plurality of spikes 42 are provided on the stirring rod 41, the liquid can also shake up and down under the stirring effect of the spikes 42 on the water. Combined with the deformation of the annular flexible cloth 54, the liquids at different heights can be further mixed more fully.

[0068] Reference Figure 6Furthermore, since one end of the telescopic rod 62 in the present disclosure is hinged to the top connecting ring 53, and the other end is hinged to the fixed ring 61, that is, the top connecting ring 53 can rotate circumferentially along the rotating shaft 2, in order to limit the rotation angle of the top connecting ring 53, in some embodiments of the present application, a plurality of traction assemblies 7 connected between the top connecting ring 53 and the bottom plate 52 are further included, and the traction assembly 7 includes a fan-shaped leaf plate 71 fixedly connected to the bottom plate 52 and a tension spring 72 with one end hinged to the top connecting ring 53 with a universal ball and the other end slidably connected to the leaf plate 71;

[0069] In order to make the tension spring 72 slide along the leaf plate 71, the leaf plate 71 is arranged perpendicular to the rotating shaft 2, and a guide groove 711 is opened on the wall of the leaf plate 71 close to the tension spring 72. The guide groove 711 is inclined from the inside of the mixing barrel 1 to the outside of the mixing barrel 1 in the positive rotation circumferential direction of the rotating shaft 2. The end of the tension spring 72 away from the top connecting ring 53 is fixedly connected with a sliding ball 721 located in the guide groove 711, and the sliding ball 721 can slide along the guide groove 711 in the guide groove 711; during the downward rotation movement of the top connecting ring 53, the liquid will generate thrust on the tension spring 72 and the sliding ball 721, so that the sliding ball 721 avoids the top connecting ring 53, so that the top connecting ring 53 is as close to the bottom wall of the mixing barrel 1 as possible; in addition, under the traction of the tension spring 72, the rotation angle of the top connecting ring 53 along the rotating shaft 2 can be limited. In some embodiments, the elasticity of the tension spring 72 satisfies the movement of the top connecting ring 53 within a fan-shaped range of 30°.

[0070] The implementation principle of the preparation device of an environmentally friendly bacterial agent for purifying eutrophic water in the embodiment of the present application is as follows: during operation, liquid and powder are fed into the mixing barrel 1 through the feeding channel, and then the motor 33 drives the rotating shaft 2 to rotate, while the linear motor 31 drives the rotating shaft 2 to move up and down;

[0071] The first stirring component 4 , the second stirring component 5 and the leaf plate 71 will rotate and move up and down along with the rotating shaft 2 to stir the liquid in the stirring barrel 1 evenly.

[0072] The present application also discloses an environmentally friendly bacterial agent for purifying eutrophic water, which is prepared using the aforementioned preparation device and is characterized in that the environmentally friendly bacterial agent includes 10% to 20% of a mixture of sodium peroxide and calcium peroxide in a ratio of 3:1, 15% to 30% of carbon powder, 15% to 30% of denitrifying bacteria and 20% to 30% of silicate cement.

[0073] A method for preparing an environmentally friendly bacterial agent for purifying eutrophic water is prepared using the above-mentioned preparation device, and specifically comprises the following steps:

[0074] S1: Smash:

[0075] After mixing wood and bagasse, put them into a grinding machine for crushing to obtain initial powder;

[0076] S2: Flour milling:

[0077] The initial powder is soaked in a sodium hydroxide solution for 10 hours to obtain a wet material, wherein the concentration of the sodium hydroxide solution is 3%;

[0078] The wet material is washed with water until it becomes neutral to obtain a neutral material;

[0079] Drying the neutral material to obtain dry powder;

[0080] S3: Hybrid:

[0081] Add dry powder into mixing tank 1;

[0082] Add denitrifying bacteria into stirring tank 1;

[0083] Adding a mixture of sodium peroxide and calcium peroxide into the mixing tank 1, wherein the ratio of sodium peroxide to calcium peroxide is 3:1;

[0084] Add nitrate cement into mixing tank 1;

[0085] Add water into mixing bucket 1;

[0086] The first stirring component 4 and the second stirring component 5 are used to stir the materials in the stirring barrel 1 to obtain an environmentally friendly bacterial agent.

[0087] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for preparing an environmentally friendly bacterial agent for purifying eutrophic water, characterized in that: include: A mixing barrel (1) having a barrel body (11) and a barrel cover (12); A rotating shaft (2) is slidably connected to the barrel cover (12) along a first direction, and the rotating shaft (2) is capable of rotating on the barrel cover (12) around its own axis; A plurality of first stirring components (4) connected to the rotating shaft (2), wherein the plurality of first stirring components (4) are evenly distributed in the rotation circumferential direction of the rotating shaft (2); and a driving assembly (3) for driving the rotating shaft (2) to slide and rotate along the barrel cover (12); The rotating shaft (2) is arranged parallel to the first direction, a through hole (121) is formed on the barrel cover (12) along the first direction, the rotating shaft (2) is passed through the through hole (121), and the rotating shaft (2) can slide in the through hole (121) along the first direction and can also rotate in the through hole (121) along the axis of the rotating shaft (2); The driving assembly (3) comprises a linear motor (31) having a guide portion (311) and a sliding portion (312), a lifting plate (32) fixedly connected to the sliding portion (312), and a motor (33) fixedly connected to the lifting plate (32); the driving direction of the linear motor (31) is parallel to the first direction, that is, the sliding portion (312) can slide on the guide portion (311) along the first direction, and the lifting plate (32) fixedly connected to the sliding portion (312) will move along with the sliding portion (311). 2) synchronous movement; the rotating shaft (2) rotates around its own axis and is connected to the lifting plate (32), the housing of the motor (33) is fixedly connected to the lifting plate (32), and the output shaft of the motor (33) passes through the lifting plate (32) and is fixedly connected to the rotating shaft (2), so that the motor (33) drives the rotating shaft (2) to rotate; thereby, the motor (33) can drive the rotating shaft (2) to rotate in the through hole (121), and the linear motor (31) can drive the rotating shaft (2) to slide in the through hole (121) along the first direction; The first stirring component (4) comprises a stirring rod (41) connected to the rotating shaft (2) and a plurality of spikes (42) fixedly connected to the stirring rod (41); the stirring rod (41) rotates synchronously with the rotating shaft (2); A collar (43) is coaxially slidably connected to the rotating shaft (2); a convex strip (21) arranged parallel to the first direction is convexly provided on the peripheral wall of the rotating shaft (2); a key groove (431) adapted to the convex strip (21) is concavely provided on the inner wall of the collar (43); and stoppers (22) are convexly provided at both ends of the convex strip (21) in a direction away from the rotating shaft (2) so as to prevent the convex strip (21) from detaching from the collar (43); The invention also comprises a second stirring component (5), wherein the second stirring component (5) comprises: A connecting rod (51) having one end fixedly connected to the stirring rod (41) and the other end extending toward one side of the bottom of the stirring barrel (1); A bottom plate (52) fixedly connected to an end of the connecting rod (51) away from the stirring rod (41); A top connecting ring (53) sleeved on the outer circumference of the connecting rod (51); An annular flexible cloth (54) having one end opening fixedly connected to the bottom plate (52) and the other end opening fixedly connected to the top connecting ring (53); the inner cavity of the annular flexible cloth (54) forms a water storage area (541); and, a synchronous sliding assembly (6) connected between the top connecting ring (53) and the bottom end of the rotating shaft (2), wherein the top connecting ring (53) moves synchronously with the rotating shaft (2) along a first direction through the synchronous sliding assembly (6) so that the top connecting ring (53) can be adjusted between a bottom posture and a top posture; The synchronous sliding assembly (6) comprises: One end of the telescopic rod (62) is connected to the top connecting ring (53), and the other end is connected to the end of the rotating shaft (2) close to the bottom wall of the mixing barrel (1); and a compression spring (63), wherein two ends of the compression spring (63) are respectively fixedly connected to one end of the telescopic rod (62); One end of the telescopic rod (62) is hinged to the top connecting ring (53), and the other end is hinged to the rotating shaft (2); the hinge axis of the telescopic rod (62) along the top connecting ring (53) and the hinge axis of the telescopic rod (62) along the rotating shaft (2) are both parallel to the first direction.

2. The device for preparing an environmentally friendly bacterial agent for purifying eutrophic water according to claim 1, characterized in that: It also includes a traction assembly (7), the traction assembly (7) comprising: A leaf plate (71) fixedly connected to the base plate (52); One end is fixedly connected to the top connecting ring (53), and the other end is slidably connected to the tension spring (72) of the leaf plate (71).

3. A method for preparing an environmentally friendly bacterial agent for purifying eutrophic water, characterized in that: The preparation is carried out using the preparation device according to claim 1, specifically The following steps are involved: S1: Smash: After mixing wood and bagasse, put them into a grinding machine for crushing to obtain initial powder; S2: Flour milling: The initial powder is soaked in a sodium hydroxide solution for 10 hours to obtain a wet material, wherein the concentration of the sodium hydroxide solution is 3%; The wet material is washed with water until it becomes neutral to obtain a neutral material; Drying the neutral material to obtain dry powder; S3: Hybrid: Adding dry powder into the mixing barrel (1); Adding denitrifying bacteria to a stirring tank (1); Adding a mixture of sodium peroxide and calcium peroxide into a stirring tank (1), wherein the ratio of sodium peroxide to calcium peroxide is 3:1; Adding nitrate cement into a mixing tank (1); Add water to the mixing bucket (1); The first stirring component (4) and the second stirring component (5) are used to stir the material in the stirring barrel (1) to obtain an environmentally friendly bacterial agent.

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