Device and method for preparing microbial agent for efficiently removing nitrogen and phosphorus

Abstract

The invention discloses an efficient nitrogen and phosphorus removal microbial agent preparation device and method. The efficient nitrogen and phosphorus removal microbial agent preparation device comprises a reaction tank, and a feeding hopper, a first liquid inlet pipe, a second liquid inlet pipe and a driving device are arranged at the top of the reaction tank; a fermentation substrate is directly added into the reaction tank, a bacterial liquid and a pre-stored fermentation base solution are introduced and mixed in the reaction tank, so that the fermentation substrate is softened, the shape of lumps is reduced, the lumps of the fermentation substrate which cannot be mixed are intercepted through the filter screen plate and are gathered towards the feed port, and the fermentation effect is improved. Along with the rotation of the pipe body, a blocky fermentation substrate can be pushed into the pipe body from the feeding hole by the material collecting plate, and the blocky fermentation substrate can be upwards lifted into the lower shell through the lifting mechanism under the driving of the driving device; and when the stirring mechanism rotates, the grinding wheel which eccentrically rotates grinds the blocky fermentation substrate softened by the bacterial liquid. Compared with the prior art, the device disclosed by the invention has the advantages that the blocky substances are more easily crushed, so that the fermentation substrate and the bacterial liquid are fully mixed and fermented.

Description

Technical Field

[0001] The present invention belongs to the technical field related to microbial agent preparation, and specifically relates to a device and method for preparing a microbial agent for efficient nitrogen and phosphorus removal. Background Art

[0002] Nitrogen and phosphorus are key nutrients for the growth of aquatic plants such as algae. Excessive nitrogen and phosphorus content in water bodies will cause aquatic plants such as algae to reproduce rapidly, forming dense algal blooms or red tides on the water surface. After the algae reproduce in large numbers, their death and decomposition process will consume a large amount of dissolved oxygen, causing hypoxia in the water body. This will cause aquatic organisms such as fish to die due to lack of oxygen, destroying the balance of the aquatic ecosystem. Excessive algae reproduction will also produce odor and toxins, deteriorate the sensory properties of the water body, emit a foul odor, and reduce the use value of the water body. In addition, abnormal nitrogen and phosphorus content in water bodies will disrupt the food chain balance of aquatic ecosystems. Therefore, it is necessary to remove nitrogen and phosphorus from the water body, and the more commonly used method is to use microbial agents.

[0003] After searching, the patent technology with announcement number CN106381275A discloses a microbial agent for denitrification and phosphorus removal. Based on 100 parts of the total mass, the active ingredients and mass composition of the microbial agent are: 50-70 parts of Pseudomonas YG-24, 5-10 parts of Rhodopseudomonas palustris, 5-10 parts of Bacillus, 5-10 parts of sulfidating bacteria, 5-10 parts of nitrifying bacteria, and 5-10 parts of denitrifying bacteria. The technology also discloses its preparation method and reaction device system. During the preparation, the composite strains are first prepared according to the composition ratio of the active ingredients in the microbial agent, 0.5 parts of the prepared composite strains are weighed, and then 30 parts of the nutrient solution are weighed, wherein the ingredients in the nutrient solution include sodium citrate, glucose, yeast extract, cysteine ​​monohydrochloride, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, ferrous sulfate, sodium chloride, and distilled water; then the weighed composite strains and nutrient solution are added to a liquid automatic reaction tank for reaction for 48 to 56 hours to obtain a liquid agent; after the high-density liquid agent is prepared by fermentation, it is dried, solidified, and crushed for the convenience of transportation and storage; the specific steps are as follows: 70 parts of the fermentation substrate are weighed, the fermentation substrate is added to the liquid-solid reaction tank, and the bacterial liquid after the reaction in step 2 is pressed into the liquid-solid reaction tank under vacuum conditions, and the automatic mixing, stirring, and fermentation are performed after sealing.

[0004] Since solid-state fermentation substrates are often accompanied by lumps, in order to improve the fermentation efficiency, it is necessary to crush them in advance through a crushing device, such as a solid-liquid reaction tank disclosed in the patent technology with the announcement number CN206911336U. The key points of its technical solution are a solid-liquid reaction tank, including a tank body, and solid pipes are fixedly connected to both sides of the tank body, and the solid pipes on the outside of the tank body are connected to a crushing mechanism. The solid-liquid reaction tank can crush the solid blocks through the crushing mechanism, thereby accelerating the solid-liquid reaction rate. However, this crushing method is to crush the lumps outside the reaction tank. Since the lumps in the solid-state fermentation substrate are relatively hard, when crushing them through the knife roller of the crushing mechanism, the loss of the knife roller is large, and it needs to be replaced from time to time, and it is easy to accumulate materials, and it is easy to contaminate other strains when exposed to the outside, affecting the quality of preparation. Summary of the invention

[0005] The object of the present invention is to provide a device and method for preparing a microbial agent for efficient nitrogen and phosphorus removal, so as to solve the problem of crushing outside a reaction tank in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for preparing a microbial agent for efficient nitrogen and phosphorus removal, comprising a reaction tank, a feed hopper, a first liquid inlet pipe, a second liquid inlet pipe and a driving device are arranged on the top of the reaction tank, a discharge pipe is arranged at the bottom of the reaction tank, a filter screen is fixed to the bottom cavity of the reaction tank, an upper shell is fixed to the top cavity of the reaction tank, a lower shell is fixed to the bottom of the upper shell, an interception screen is fixed to the bottom of the lower shell, and a stirring mechanism is arranged between the lower shell and the filter screen;

[0007] The inner side of the stirring mechanism is provided with a lifting mechanism which can lift the block fermentation substrate intercepted by the filter screen plate upward to the lower shell body under the drive of the driving device;

[0008] The upper shell is provided with an annular cavity, buffer cavities located on both sides of the annular cavity, and a first guide hole connecting the annular cavity and the buffer cavity, and the two buffer cavities are respectively connected with the first liquid inlet pipe and the second liquid inlet pipe;

[0009] The annular cavity is provided with a transmission mechanism which drives the stirring mechanism to stir the solid and liquid in the reaction tank under the transmission drive of the lifting mechanism;

[0010] The top of the stirring mechanism is provided with a grinding wheel capable of grinding the block fermentation substrate in the lower shell as the stirring mechanism rotates;

[0011] Both of the two buffer chambers are provided with a feeding mechanism capable of quantitatively passing the bacterial liquid and fermentation base liquid introduced by the first liquid inlet pipe and the second liquid inlet pipe into the annular chamber. The bacterial liquid and fermentation base liquid entering the annular chamber are pre-mixed and fermented in advance through a transmission mechanism and then passed into the lower shell body.

[0012] Preferably, the stirring mechanism includes a tube body, a plurality of stirring blades are fixed to the outside of the tube body, the lower end of the tube body is rotatably connected to the filter screen plate, a feed port is provided at the bottom of the tube body and is located at the upper edge of the filter screen plate, and an arc-shaped material-collecting plate fixed to the outside of the tube body is provided on one side of the feed port, the filter screen plate is a conical structure that gradually decreases from top to bottom, the bottom of the material-collecting plate fits the conical surface of the filter screen plate, a pressure cover is fixed to the upper end of the tube body, the pressure cover is rotatably connected to the bottom of the upper shell body, and a discharge port is provided at the top of the tube body and is located below the pressure cover.

[0013] Preferably, a flange is provided at the lower end of the gland, protrusions are provided on both sides of the top surface of the flange, annular teeth are provided on the inner wall of the gland, and a through opening is opened at the bottom of the gland.

[0014] Preferably, the lifting mechanism includes a driving shaft, the driving shaft is fixed to the output end of the driving device, the outer side of the driving shaft is fixed with spiral blades at a position inside the tube body, and the outer side of the driving shaft is fixed with a gear ring at a position above the tube body.

[0015] Preferably, the transmission mechanism includes a driven shaft, which is rotatably connected to the upper shell, and the lower end of the driven shaft extends into the pressure cover and is fixed with a gear, and the gear is meshed with the gear ring and the annular teeth at the same time. A plurality of stirring rods are fixed to the position of the driven shaft located in the annular cavity.

[0016] Preferably, the driven shaft and the gear are provided with a through lumen, and the top of the lumen is provided with a second guide hole communicating with the bottom of the annular cavity.

[0017] Preferably, the feeding mechanism includes a telescopic rod, a pressure plug that is slidably limited in the cache cavity is fixed to the upper end of the telescopic rod, a hemispherical pressure head is fixed to the lower end of the telescopic rod, and a spring is provided on the outer sleeve of the telescopic rod. The pressure head abuts against the top surface of the flange under the elastic force of the spring.

[0018] Preferably, a plug cavity is provided in the press plug, an annular groove is provided on the outer side of the press plug, and a through hole communicating with the plug cavity is provided in the annular groove.

[0019] Preferably, the grinding wheel is fixed outside the tube body below the discharge port, and the grinding wheel is eccentrically arranged relative to the tube body and fits against an inner wall of one side of the lower shell body.

[0020] A method for using a microbial agent preparation device comprises the following steps:

[0021] Step 1: introducing solid fermentation substrate into the reaction tank through the feed hopper, injecting bacterial liquid through the first liquid inlet pipe, and injecting pre-stored fermentation substrate liquid through the second liquid inlet pipe;

[0022] Step 2: Lumps in the fermentation substrate are intercepted by the filter plate and gathered in the middle;

[0023] Step 3: The lifting mechanism, driven by the driving device, lifts the block-shaped fermentation substrate intercepted by the filter screen plate upward into the lower shell;

[0024] Step 4: The transmission mechanism and the lifting mechanism drive the stirring mechanism to stir the fermentation substrate and the bacterial liquid in the reaction tank. During the rotation of the stirring mechanism, the grinding wheel can grind the softened block fermentation substrate in the lower shell;

[0025] Step 5: During the rotation of the stirring mechanism, the feeding mechanisms in the two buffer chambers are driven to quantitatively guide the bacterial liquid and the fermentation base liquid introduced by the first liquid inlet pipe and the second liquid inlet pipe into the annular chamber, and the bacterial liquid and the fermentation base liquid in the annular chamber are pre-mixed and fermented in advance through the transmission mechanism;

[0026] Step six, the pre-mixed mixed liquid is passed into the lower shell through the transmission mechanism, and the ground fermentation substrate is flushed into the reaction tank through the interception mesh plate for further mixing and fermentation.

[0027] Compared with the prior art, the present invention provides a device and method for preparing a microbial agent for efficient nitrogen and phosphorus removal, which has the following beneficial effects:

[0028] 1. The present invention softens the fermentation substrate and reduces the size of lumps by directly adding the fermentation substrate into the reaction tank and introducing bacterial liquid and pre-stored fermentation substrate liquid, and mixing them in the reaction tank. The lumps of fermentation substrate that cannot be mixed are intercepted by the filter screen and gathered to the feed inlet. As the tube body rotates, the lumps of fermentation substrate can be pushed into the tube body from the feed inlet by the material-grabbing plate, and the lumps of fermentation substrate can be lifted upward into the lower shell body by the lifting mechanism under the drive of the driving device. When the stirring mechanism rotates, the eccentrically rotating grinding wheel grinds the lumps of fermentation substrate softened by the bacterial liquid. Compared with the prior art, the present invention is easier to crush the lumps and achieve sufficient mixing and fermentation of the fermentation substrate and the bacterial liquid.

[0029] 2. During the rotation of the stirring mechanism, the present invention can drive the feeding mechanisms in the two buffer chambers to quantitatively guide the bacterial liquid and the fermentation bottom liquid introduced by the first liquid inlet pipe and the second liquid inlet pipe into the annular chamber, and pre-mix the bacterial liquid and the fermentation bottom liquid in the annular chamber through the transmission mechanism for early fermentation, so that the microorganisms in the bacterial liquid can adapt to the living environment of the fermentation bottom liquid in advance, and use the nutrients in the bottom liquid to quickly start the fermentation process, effectively saving the overall time required for fermentation, helping the microorganisms to better carry out metabolic reactions, making the fermentation process more thorough, more conducive to the generation of target products, improving the generation efficiency and quality of the products, and effectively improving the fermentation efficiency, reducing the fermentation time, and reducing the risk of bacterial contamination;

[0030] 3. In the present invention, the fermentation substrate and bacterial liquid that have passed through the stirring annular cavity are passed into the lower shell through the second guide hole and the tube cavity, and the fermentation substrate on the inner wall of the lower shell and the surface of the grinding wheel can be flushed into the reaction tank through the interception mesh plate, and further mixed and fermented by the stirring blades. The flushing effect of the mixed liquid of the fermentation substrate and the bacterial liquid can reduce the residual materials, which can reduce energy consumption, equipment use time and waste of raw materials to a certain extent, thereby reducing the comprehensive cost of fermentation production. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of a microbial agent preparation device for efficient nitrogen and phosphorus removal proposed by the present invention;

[0033] Figure 2 This is a schematic diagram of a half-section structure of a microbial agent preparation device for efficient nitrogen and phosphorus removal proposed by the present invention;

[0034] Figure 3 This is a schematic diagram of the front view of a microbial agent preparation device for high-efficiency nitrogen and phosphorus removal proposed by the present invention;

[0035] Figure 4 A schematic diagram of a half-section structure of the stirring mechanism and the lifting mechanism proposed in the present invention;

[0036] Figure 5 A half-section structural schematic diagram of the feeding mechanism proposed in the present invention;

[0037] Figure 6 A half-section structural schematic diagram of the transmission mechanism proposed by the present invention;

[0038] Figure 7 for Figure 3 The enlarged structural diagram at A in the middle;

[0039] Figure 8 for Figure 3 The enlarged structural diagram at B in the middle;

[0040] In the figure: 1, reaction tank; 11, feed hopper; 12, first liquid inlet pipe; 13, second liquid inlet pipe; 14, discharge pipe; 2, driving device; 3, upper shell; 31, annular cavity; 32, buffer cavity; 33, first guide hole; 4, lower shell; 41, intercepting mesh plate; 5, stirring mechanism; 51, tube body; 52, stirring blade; 53, feed port; 54, material collecting plate; 55, gland; 551, flange; 552, protrusion; 553, annular tooth; 554, through port; 56, discharge port; 6, grinding wheel; 7, lifting mechanism; 71, driving shaft; 72, spiral blade; 73, gear ring; 8, transmission mechanism; 81, driven shaft; 811, tube cavity; 812, second guide hole; 82, gear; 83, stirring rod; 9, feeding mechanism; 91, telescopic rod; 92, pressure plug; 921, plug cavity; 922, annular groove; 923, through hole; 93, pressure head; 94, spring; 10, filter screen. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1 , Figure 2 and Figure 3 The present invention provides a technical solution: a device for preparing a microbial agent for efficient nitrogen and phosphorus removal, comprising a reaction tank 1, a feeding hopper 11, a first liquid inlet pipe 12, a second liquid inlet pipe 13 and a driving device 2 are arranged on the top of the reaction tank 1, the first liquid inlet pipe 12 is connected to a fermentation base liquid storage tank pre-stored with fermentation base liquid through a pipeline, the second liquid inlet pipe 13 is connected to a bacterial liquid tank through a pipeline, and a one-way valve is arranged on the pipelines of the first liquid inlet pipe 12 and the second liquid inlet pipe 13, so that liquid can only pass into the reaction tank 1 in one direction, the driving device 2 is composed of a motor and a reducer, a discharge pipe 14 is arranged at the bottom of the reaction tank 1 for discharging finished products, and a filter screen plate 10 is fixed to the bottom cavity of the reaction tank 1 for intercepting lumps in the fermentation substrate.

[0043] See also Figure 3 , Figure 4 and Figure 7The top cavity of the reaction tank 1 is fixed with an upper shell 3, the bottom of the upper shell 3 is fixed with a lower shell 4, the bottom of the lower shell 4 is fixed with an intercepting mesh plate 41, a stirring mechanism 5 is arranged between the lower shell 4 and the filter mesh plate 10, the stirring mechanism 5 comprises a tube body 51, a plurality of stirring blades 52 are fixed to the outside of the tube body 51, the lower end of the tube body 51 is rotatably connected to the filter mesh plate 10, a feed port 53 is provided at the bottom of the tube body 51 at the upper edge of the filter mesh plate 10, an arc-shaped material-grabbing plate 54 fixed to the outside of the tube body 51 is arranged on one side of the feed port 53, the filter mesh plate 10 is a conical structure that gradually decreases from top to bottom, and the bottom of the material-grabbing plate 54 is connected to the filter mesh plate The conical surfaces of 10 fit together, the filter screen plate 10 intercepts the block fermentation substrate that cannot be mixed and gathers it to the feed port 53, and as the tube body 51 rotates, the block fermentation substrate can be pushed from the feed port 53 to the tube body 51 by the material collecting plate 54, a pressure cover 55 is fixed to the upper end of the tube body 51, the pressure cover 55 is rotatably connected to the bottom of the upper shell body 3, and a discharge port 56 below the pressure cover 55 is opened at the top of the tube body 51, and further, a flange 551 is provided at the lower end of the pressure cover 55, protrusions 552 are provided on both sides of the top surface of the flange 551, annular teeth 553 are provided on the inner wall of the pressure cover 55, and a through opening 554 is opened at the bottom of the pressure cover 55.

[0044] See also Figure 3 and Figure 4 The inner side of the stirring mechanism 5 is provided with a lifting mechanism 7 which can lift the block fermentation substrate intercepted by the filter screen plate 10 upward to the lower shell 4 under the drive of the driving device 2. The lifting mechanism 7 includes a driving shaft 71, which is fixed to the output end of the driving device 2. The outer side of the driving shaft 71 is located in the tube body 51 and is fixed with a spiral blade 72. The outer side of the driving shaft 71 is located above the tube body 51 and is fixed with a gear ring 73. The driving shaft 71 rotates under the drive of the driving device 2. The meshing of the gear ring 73 outside the driving shaft 71 and the gear 82 drives the driven shaft 81 to rotate, and the meshing of the gear 82 and the annular gear 553 inside the pressure cover 55 drives the tube body 51 to rotate synchronously, and then the fermentation substrate and the bacterial liquid in the reaction tank 1 are mixed by the stirring blades 52 outside the tube body 51, and the block fermentation substrate that cannot be mixed enters the tube body 51, and the spiral blades 72 outside the driving shaft 71 can spirally rotate to lift the block fermentation substrate upward and transport it to the lower shell body 4 through the discharge port 56.

[0045] See also Figure 2 and Figure 3 The upper shell 3 is provided with an annular cavity 31, buffer cavities 32 located on both sides of the annular cavity 31, and a first guide hole 33 connecting the annular cavity 31 and the buffer cavity 32. The two buffer cavities 32 are respectively connected to the first liquid inlet pipe 12 and the second liquid inlet pipe 13;

[0046] See also Figure 3 and Figure 6A transmission mechanism 8 is provided in the annular cavity 31, which drives the stirring mechanism 5 to stir the solid and liquid in the reaction tank 1 under the transmission drive of the lifting mechanism 7. The transmission mechanism 8 includes a driven shaft 81, which is rotatably connected to the upper shell 3. The lower end of the driven shaft 81 extends into the pressure cover 55 and is fixed with a gear 82. The gear 82 is meshed with the gear ring 73 and the annular gear 553 at the same time. A plurality of stirring rods 83 are fixed to the position where the driven shaft 81 is located in the annular cavity 31. Specifically, the driven shaft 81 and the gear 82 are provided with a through tube cavity 811, and the top of the tube cavity 811 is provided with a second guide hole 812 which is communicated with the bottom cavity of the annular cavity 31.

[0047] See also Figure 2 and Figure 3 The top of the stirring mechanism 5 is provided with a grinding wheel 6 which can grind the block fermentation substrate in the lower shell 4 as the stirring mechanism 5 rotates, and the grinding wheel 6 is fixed to the outside of the tube body 51 below the discharge port 56. The grinding wheel 6 is eccentrically arranged relative to the tube body 51 and fits with the inner wall of one side of the lower shell 4. When the tube body 51 rotates, the eccentrically rotating grinding wheel 6 grinds the block fermentation substrate softened by the bacterial liquid. At the same time, the rotation of the driven shaft 81 can drive the stirring rod 83 to pre-mix the fermentation substrate and the bacterial liquid in the annular cavity 31;

[0048] See also Figure 3 , Figure 5 and Figure 8, the two buffer chambers 32 are both provided with a feeding mechanism 9 which can quantitatively pass the bacterial liquid and fermentation bottom liquid introduced by the first liquid inlet pipe 12 and the second liquid inlet pipe 13 into the annular chamber 31, the feeding mechanism 9 includes a telescopic rod 91, the upper end of the telescopic rod 91 is fixed with a pressure plug 92 which is slidably limited in the buffer chamber 32, the lower end of the telescopic rod 91 is fixed with a hemispherical pressure head 93, the telescopic rod 91 is covered with a spring 94, the pressure head 93 contacts the top surface of the flange 551 under the elastic force of the spring 94, further, a plug cavity 921 is provided in the pressure plug 92, an annular groove 922 is provided on the outer side of the pressure plug 92, a through hole 923 which communicates with the plug cavity 921 is provided in the annular groove 922, the rotation of the tube body 51 can drive the pressure cover 55 to rotate synchronously, and then the flange 551 The protrusion 552 on the cover presses down the pressure head 93, forcing the telescopic rod 91 to overcome the elastic force of the spring 94 and push the pressure plug 92 upward, and then the bacterial liquid or fermentation base liquid cached in the buffer chamber 32 is pressed into the annular groove 922 through the plug cavity 921 and the through hole 923 by the pressure plug 92. When the first guide hole 33 is aligned with the annular groove 922, the first guide hole 33 completes the passage and enters the annular cavity 31 through the first guide hole 33, and is stirred and pre-mixed by the stirring rod 83 outside the driven shaft 81 during rotation. When the pressure cover 55 rotates until the protrusion 552 is separated from the pressure head 93, the pressure plug 92 automatically falls back under the elastic force of the spring 94, and then the bacterial liquid and the fermentation base liquid are quantitatively pumped into the buffer chamber 32 through the first liquid inlet pipe 12 and the second liquid inlet pipe 13.

[0049] Specifically, the bacterial liquid and the fermentation substrate liquid entering the annular cavity 31 are pre-mixed and fermented in advance through the transmission mechanism 8 and then passed into the lower shell body 4, while the fermentation substrate and the bacterial liquid passing through the stirring annular cavity 31 are passed into the lower shell body 4 through the second guide hole 812 and the tube cavity 811, and the fermentation substrate on the inner wall of the lower shell body 4 and the surface of the grinding wheel 6 can be flushed into the reaction tank 1 through the intercepting mesh plate 41, and further mixed and fermented by the stirring blades 52.

[0050] Based on the above embodiments, the present invention also proposes a method for using a microbial agent preparation device, comprising the following steps:

[0051] Step 1: introducing solid fermentation substrate into the reaction tank 1 through the feed hopper 11, injecting bacterial liquid through the first liquid inlet pipe 12, and injecting pre-stored fermentation substrate liquid through the second liquid inlet pipe 13;

[0052] Step 2: Lumps in the fermentation substrate are intercepted by the filter screen plate 10 and gathered in the middle;

[0053] Step 3: the lifting mechanism 7, driven by the driving device 2, lifts the block-shaped fermentation substrate intercepted by the filter screen plate 10 upward into the lower housing 4;

[0054] Step 4: The transmission mechanism 8 and the lifting mechanism 7 drive the stirring mechanism 5 to stir the fermentation substrate and the bacterial liquid in the reaction tank 1. During the rotation of the stirring mechanism 5, the grinding wheel 6 can grind the softened block fermentation substrate in the lower shell 4;

[0055] Step 5: During the rotation of the stirring mechanism 5, the feeding mechanisms 9 in the two buffer chambers 32 are driven to quantitatively guide the bacterial liquid and the fermentation base liquid introduced by the first liquid inlet pipe 12 and the second liquid inlet pipe 13 into the annular chamber 31, and the bacterial liquid and the fermentation base liquid in the annular chamber 31 are pre-mixed and fermented in advance through the transmission mechanism 8;

[0056] Step six: the pre-mixed mixed liquid is passed into the lower shell 4 through the transmission mechanism 8, and the ground fermentation substrate is flushed into the reaction tank 1 through the interception mesh plate 41 for further mixing and fermentation.

[0057] The working principle and detailed use process of the present invention are as follows: the driving shaft 71 rotates under the drive of the driving device 2. Figure 4 In the direction shown, the driven shaft 81 is driven to rotate counterclockwise by the meshing of the toothed ring 73 outside the driving shaft 71 and the gear 82, and the tube body 51 is driven to rotate counterclockwise synchronously by the meshing of the gear 82 and the annular gear 553 inside the gland 55, so that the fermentation substrate and the bacterial liquid in the reaction tank 1 are mixed by the stirring blades 52 outside the tube body 51, and the filter screen plate 10 intercepts the blocky fermentation substrate that cannot be mixed and gathers it to the feed inlet 53, and as the tube body 51 rotates, the fermentation substrate can be collected by the stirring blades 52 outside the tube body 51. The plate 54 pushes the block fermentation substrate from the feed port 53 into the tube body 51, and the spiral blade 72 outside the driving shaft 71 can be spirally rotated to lift the block fermentation substrate upward and transport it to the lower shell body 4 through the discharge port 56. When the tube body 51 rotates, the eccentrically rotating grinding wheel 6 grinds the block fermentation substrate softened by the bacterial liquid. At the same time, the rotation of the driven shaft 81 can drive the stirring rod 83 to pre-mix the fermentation substrate and the bacterial liquid in the annular cavity 31.

[0058] The rotation of the tube body 51 can drive the pressure cover 55 to rotate synchronously, and then the protrusion 552 on the flange 551 presses the pressure head 93 downward, forcing the telescopic rod 91 to overcome the elastic force of the spring 94 and push the pressure plug 92 upward, and then the bacterial liquid or fermentation base liquid cached in the buffer chamber 32 is pressed into the annular groove 922 through the plug cavity 921 and the through hole 923 by the pressure plug 92. When the first guide hole 33 is aligned with the annular groove 922, the first guide hole 33 completes the passage and enters the annular cavity 31 through the first guide hole 33, and is stirred and pre-mixed by the stirring rod 83 outside the driven shaft 81 during rotation. When the pressure cover 55 rotates until the protrusion 552 is separated from the pressure head 93, the pressure plug 92 automatically falls back under the elastic force of the spring 94, and then the bacterial liquid and the fermentation base liquid are quantitatively pumped into the buffer chamber 32 through the first liquid inlet pipe 12 and the second liquid inlet pipe 13, thereby achieving a mixing effect of quantitative feeding of the bacterial liquid and the fermentation base liquid;

[0059] The fermentation substrate and bacterial liquid passing through the stirring annular cavity 31 are passed into the lower shell 4 through the second guide hole 812 and the tube cavity 811, and the fermentation substrate on the inner wall of the lower shell 4 and the surface of the grinding wheel 6 can be flushed into the reaction tank 1 through the intercepting mesh plate 41, and further mixed and fermented by the stirring blade 52;

[0060] The fermentation bottom liquid that has completed the fermentation is pre-stored in a storage tank and injected into the reaction tank 1 again through the second liquid inlet pipe 13 for subsequent pre-mixing of bacterial liquid and early fermentation.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing a microbial agent for efficient nitrogen and phosphorus removal, comprising a reaction tank (1), wherein a feed hopper (11), a first liquid inlet pipe (12), a second liquid inlet pipe (13) and a driving device (2) are arranged on the top of the reaction tank (1), and a discharge pipe (14) is arranged on the bottom of the reaction tank (1), characterized in that: A filter screen plate (10) is fixed to the bottom chamber of the reaction tank (1), an upper shell (3) is fixed to the top chamber of the reaction tank (1), a lower shell (4) is fixed to the bottom of the upper shell (3), an interception screen plate (41) is fixed to the bottom of the lower shell (4), and a stirring mechanism (5) is provided between the lower shell (4) and the filter screen plate (10); The inner side of the stirring mechanism (5) is provided with a lifting mechanism (7) capable of lifting the block fermentation substrate intercepted by the filter screen plate (10) upwards to the lower shell (4) under the drive of the driving device (2); The upper shell (3) is provided with an annular cavity (31), buffer cavities (32) located on both sides of the annular cavity (31), and a first guide hole (33) connecting the annular cavity (31) and the buffer cavity (32), and the two buffer cavities (32) are respectively connected to the first liquid inlet pipe (12) and the second liquid inlet pipe (13); The annular cavity (31) is provided with a transmission mechanism (8) which drives the stirring mechanism (5) to stir the solid and liquid in the reaction tank (1) under the driving force of the lifting mechanism (7); The top of the stirring mechanism (5) is provided with a grinding wheel (6) capable of grinding the block fermentation substrate in the lower shell (4) as the stirring mechanism (5) rotates; Both of the two buffer chambers (32) are provided with a feeding mechanism (9) capable of quantitatively passing the bacterial liquid and the fermentation base liquid introduced through the first liquid inlet pipe (12) and the second liquid inlet pipe (13) into the annular chamber (31); the bacterial liquid and the fermentation base liquid entering the annular chamber (31) are pre-mixed and fermented in advance through a transmission mechanism (8) and then passed into the lower shell body (4).

2. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 1, characterized in that: The stirring mechanism (5) comprises a tube body (51), a plurality of stirring blades (52) are fixed on the outside of the tube body (51), the lower end of the tube body (51) is rotatably connected to the filter screen plate (10), the bottom of the tube body (51) is provided with a feed port (53) located at the upper edge of the filter screen plate (10), one side of the feed port (53) is provided with an arc-shaped material-collecting plate (54) fixed to the outside of the tube body (51), the filter screen plate (10) is a conical structure that gradually decreases from top to bottom, the bottom of the material-collecting plate (54) is in contact with the conical surface of the filter screen plate (10), the upper end of the tube body (51) is fixed with a pressure cover (55), the pressure cover (55) is rotatably connected to the bottom of the upper shell body (3), and the top of the tube body (51) is provided with a discharge port (56) located below the pressure cover (55).

3. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 2, characterized in that: The lower end of the pressure cover (55) is provided with a flange (551), the top surface of the flange (551) is provided with protrusions (552) on both sides, the inner wall of the pressure cover (55) is provided with annular teeth (553), and the bottom of the pressure cover (55) is provided with a through opening (554).

4. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 3, characterized in that: The lifting mechanism (7) comprises a driving shaft (71), wherein the driving shaft (71) is fixed to the output end of the driving device (2), a spiral blade (72) is fixed to the outer side of the driving shaft (71) located inside the tube body (51), and a gear ring (73) is fixed to the outer side of the driving shaft (71) located above the tube body (51).

5. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 4, characterized in that: The transmission mechanism (8) comprises a driven shaft (81), the driven shaft (81) being rotatably connected to the upper shell (3), the lower end of the driven shaft (81) extending into the gland (55) and being fixed with a gear (82), the gear (82) being meshed with the gear ring (73) and the annular gear (553) at the same time, and a plurality of stirring rods (83) being fixed to the position of the driven shaft (81) located in the annular cavity (31).

6. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 5, characterized in that: The driven shaft (81) and the gear (82) are provided with a through tube cavity (811), and the top of the tube cavity (811) is provided with a second guide hole (812) which is in communication with the bottom cavity of the annular cavity (31).

7. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 3, characterized in that: The feeding mechanism (9) comprises a telescopic rod (91), the upper end of which is fixed with a pressure plug (92) which is slidably limited in the buffer cavity (32), the lower end of which is fixed with a hemispherical pressure head (93), the telescopic rod (91) is covered with a spring (94), and the pressure head (93) contacts the top surface of the flange (551) under the elastic force of the spring (94).

8. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 7, characterized in that: A plug cavity (921) is provided in the press plug (92), an annular groove (922) is provided on the outer side of the press plug (92), and a through hole (923) communicating with the plug cavity (921) is provided in the annular groove (922).

9. The device for preparing a microbial agent for efficient nitrogen and phosphorus removal according to claim 2, characterized in that: The grinding wheel (6) is fixed to the outside of the tube body (51) below the discharge port (56); the grinding wheel (6) is eccentrically arranged relative to the tube body (51) and fits with the inner wall of one side of the lower shell (4).

10. A method for using a microbial agent preparation device, according to the microbial agent preparation device for efficient nitrogen and phosphorus removal according to claim 1, characterized in that: The following steps are involved: Step 1: introducing solid fermentation substrate into the reaction tank (1) through the feed hopper (11), injecting bacterial liquid through the first liquid inlet pipe (12), and injecting pre-stored fermentation substrate liquid through the second liquid inlet pipe (13); Step 2: Lumps in the fermentation substrate are intercepted by the filter screen plate (10) and gathered in the middle; Step 3: The lifting mechanism (7) is driven by the driving device (2) to lift the block-shaped fermentation substrate intercepted by the filter screen plate (10) upward into the lower shell (4); Step 4: The transmission mechanism (8) and the lifting mechanism (7) drive the stirring mechanism (5) to stir the fermentation substrate and the bacterial liquid in the reaction tank (1); during the rotation of the stirring mechanism (5), the grinding wheel (6) can grind the softened block fermentation substrate in the lower shell (4); Step 5: During the rotation of the stirring mechanism (5), the feeding mechanisms (9) in the two buffer chambers (32) are driven to quantitatively guide the bacterial liquid and the fermentation base liquid introduced through the first liquid inlet pipe (12) and the second liquid inlet pipe (13) into the annular chamber (31), and the bacterial liquid and the fermentation base liquid in the annular chamber (31) are pre-mixed and fermented in advance through the transmission mechanism (8); Step six: the pre-mixed mixed liquid is passed into the lower shell (4) through the transmission mechanism (8), and the ground fermentation substrate is flushed into the reaction tank (1) through the interception mesh plate (41) for further mixing and fermentation.

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