CN211170675U

CN211170675U - Paddle type stirrer with shell breaking function

Info

Publication number: CN211170675U
Application number: CN201921236277.9U
Authority: CN
Inventors: 熊炜; 李进锋; 熊峰; 骆秋言
Original assignee: Hubei Lyuxin Ecological Technology Co ltd
Current assignee: Hubei Lvxin biomass energy equipment Co., Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-08-04
Anticipated expiration: 2029-08-01

Abstract

The utility model relates to a paddle type stirrer with a shell breaking function, which comprises a rotating shaft and a stirring paddle which are connected with each other, wherein the stirring paddle is arranged perpendicular to the rotating shaft; one end of the stirring paddle is fixedly connected with the rotating shaft, the other end of the stirring paddle is provided with a bucket-shaped blade, the edge of a bucket-shaped opening on the blade is in a sawtooth shape, and the bucket-shaped opening direction of the blade is consistent with the acting force direction during forward stirring; the paddle is provided with a plate knife, the back of the plate knife is away from the hopper-shaped opening, and the knife edge direction of the plate knife is consistent with the acting direction during reverse stirring; a plurality of the stirring paddles are arranged on the rotating shaft along the axis of the rotating shaft in a spiral shape. The utility model discloses especially, be fit for mixed raw materials high concentration continuous fermentation's technology, still can easily stir freely when zymotic fluid concentration is high, broken shell ability reinforce, the power consumption is low, more energy saving consumes, reduces the operation cost.

Description

Paddle type stirrer with shell breaking function

Technical Field

The utility model relates to a marsh gas production field especially relates to an inside agitator instrument of reactor, concretely relates to paddle agitator of broken shell function in area.

Background

During the production process of the biogas, fermentation raw materials in the large-scale anaerobic reactor are easy to layer under the state of not stirring or insufficient stirring, wherein the fermentation raw materials in a scum layer on the upper layer of the fermentation liquid are easy to crust after being accumulated for a long time, and the crust layer on the fermentation liquid has main influence on the fermentation of the biogas. In general, a stirrer is adopted for stirring, on one hand, fermentation raw materials and microorganisms are kept in full contact through stirring, and meanwhile, the temperature generated by fermentation and the concentration of fermentation liquor are distributed, so that the digestion efficiency of the fermentation raw materials is improved, the gas production rate is increased, the reaction period of the fermentation is shortened, on the other hand, the crusting of a scum layer of the fermentation liquor is effectively prevented, and when the crusting of the fermentation liquor occurs, the phenomenon that the stirring efficiency is low and the crusting of the scum layer cannot be effectively broken occurs in the conventional stirrer, so that the digestion efficiency of the fermentation raw materials is reduced, and finally, the crusting and thickening of the scum layer are increased, so that the reactor 4 cannot produce gas and suffers production stop loss.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a paddle agitator of broken shell function in area, in the stirring, the bucket type paddle of the band saw tooth of agitator and flat sword can cut off the shell on floating layer easily, solves the inside straw floating layer problem of reactor effectively, is fit for the continuous fermented technology of mixed raw materials high concentration, still can easily stir freely when zymotic fluid concentration reaches 18%, and broken shell ability reinforce. The utility model provides high reactor inner tank appearance gas production rate, the while power consumption is low, compares other agitators and more can adapt to high concentration fermentation, more energy saving consumes, reduces the operation cost.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a paddle type stirrer with a shell breaking function comprises a rotating shaft and a stirring paddle which are connected with each other, wherein the stirring paddle is perpendicular to the rotating shaft; the one end of stirring rake with pivot fixed connection, the other end of stirring rake is provided with the paddle of hopper-shaped, hopper-shaped opening border on the paddle is established to the cockscomb structure, the hopper-shaped opening direction of paddle is unanimous with the impetus direction when the forward stirring.

The utility model discloses an agitator has the function of breaking shell, and in the stirring, the bucket form paddle of the band saw tooth of agitator can cut easily and open the shell that floats the layer to utilize the bucket form paddle to press down the shell that downcuts and stir under the feed liquor surface, solve the inside straw flotation layer problem of reactor effectively, be fit for the continuous fermentation's of mixed raw materials high concentration technology, still can easily stir freely when zymotic fluid concentration is high, and the broken shell ability is strong, stirs efficiently.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Preferably, a plate knife is arranged on the paddle and is away from the hopper-shaped opening, and the knife edge direction of the plate knife is consistent with the acting direction during reverse stirring. When the liquid level encrusts seriously, the agitator forward starting resistance is great, can reverse starting agitator earlier, cuts the flotation layer of encrustation through the board sword on the bucket form paddle, because the resistance of cutting with the board sword is less, after the encrustation is cut apart into great cubic flotation layer, changes forward stirring again and further breaks up every flotation layer and impresses below the liquid level, improves stirring efficiency.

Preferably, the shape of the paddle is a triangular bucket shape. The acute angle of the triangular bucket is connected with the stirring paddle, so that the energy transmitted to the blade by the rotating shaft is more balanced and concentrated, and the energy loss is reduced.

Preferably, the agitator includes a plurality of the stirring rake, it is a plurality of the stirring rake is followed the axle center of pivot is the heliciform and installs evenly in on the pivot. A plurality of stirring rakes are the heliciform evenly distributed along the axle center of pivot, make the focus of agitator balanced, prevent to vibrate too big when arousing the agitator stirring because the unbalanced barycenter.

Preferably, a plurality of the stirring paddles are fixedly connected with each other through a connecting piece. The stirring paddles are fixedly connected through the rigid connecting piece, so that the stability of the stirrer is improved, and the mutual supporting effect is also achieved in the stirring process.

Preferably, the angles of the adjacent stirring paddles are the same, and the distances between the connection points of the adjacent stirring paddles on the rotating shaft are the same. This setting makes a plurality of stirring rakes evenly arrange in the pivot, is favorable to the focus balance of agitator.

The utility model has the advantages that: the utility model discloses a paddle agitator of area shell-breaking function, when positive stirring, the bucket paddle of the band saw tooth of agitator can cut off the shell of floating layer easily, impresses the shell that cuts off into the depth under the liquid level simultaneously and stirs, solves the inside straw floating layer problem of reactor effectively; when the liquid level crusts seriously and causes that the stirrer is difficult to start in the forward direction, the stirrer is started in the reverse direction, the plate knife on the blade can easily cut the crusts into large blocks to float on the liquid level, and then the stirrer is started in the forward direction, and the sawtooth on the bucket-shaped blade of the stirrer can cut the crusts on the liquid level into small blocks and press the small blocks below the liquid level, so that the stirring purpose is achieved; the utility model discloses especially, be fit for the continuous fermentation technology of mixed raw materials high concentration, still can easily stir freely when zymotic fluid concentration reaches 18%, the broken shell ability reinforce. The utility model provides high reactor inner tank appearance gas production rate selects forward stirring or reverse stirring according to actual need, and the power consumption is low, compares other agitators and more can adapt to high concentration fermentation, more energy saving consumes, reduces the operation cost.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a side view of the overall structure of the present invention;

fig. 3 is a front view of the blade of the present invention;

fig. 4 is a side view of the blade of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a rotating shaft, 2, a stirring paddle, 201, a paddle arm, 202, a blade, 2021, sawteeth, 2022, a plate knife, 3, a paddle arm connecting plate, 4, a reactor, 5, a driving motor, 6, a reactor outer wall fixing supporting frame, 7, a reactor inner supporting frame, 8, a planetary gear, 9, a coupler, 10 and a mechanical sealing device.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-2, a paddle type stirrer with a shell breaking function is transversely arranged in a reactor 4, and comprises a rotating shaft 1 and a stirring paddle 2 which are connected with each other, wherein the stirring paddle 2 is arranged perpendicular to the rotating shaft 1. The two ends of the rotating shaft 1 transversely penetrate through the wall of the reactor 4, the interface of the rotating shaft 1 and the reactor 4 is sealed through a mechanical sealing device 10, and the rotating shaft 1 and the reactor 4 can rotate relatively. The mechanical seal device 10 is conventional, and the description of the embodiment is omitted here. The one end of pivot 1 is equipped with the two-way driving motor 5 of coaxial setting, driving motor 5's output shaft passes through shaft coupling 9 and planetary gear 8's driving gear connection, the one end that pivot 1 is close to driving motor 5 is connected with planetary gear 8's driven gear, driving motor 5 high-speed drive planetary gear 8 operates, after planetary gear 8's deceleration effect, the pivot 1 that drives the agitator carries out low-speed operation to drive stirring rake 2 and stir. The structure of the planetary gear 8 is prior art, and the description of the embodiment is omitted here. Use planetary gear 8 deceleration, can increase the moment of torsion that transmits on the agitator pivot 1, can cut open thicker liquid level crust, reach better stirring efficiency. The fixed part of the driving motor 5 is fixedly arranged on the outer wall of the reactor 4 through a reactor outer wall fixing support frame 6 so as to fix the driving motor 5. One end of the rotating shaft 1 far away from the driving motor 5 is arranged on a reactor inner supporting frame 7 in the reactor 4 through a bearing.

The stirring paddle 2 comprises a paddle arm 201 and a paddle 202 which are respectively arranged at two ends of the stirring paddle 2, and the paddle arm 201 is fixedly connected with the paddle 202. Paddle arm 201 one end of paddle 2 with pivot 1 passes through connecting piece fixed connection, paddle 2's paddle 202 one end sets up to the bucket form, the bucket form opening border on the paddle 202 is established to the cockscomb structure, and each border of bucket form opening on the paddle 202 all is provided with sawtooth 2021, paddle 202 is unanimous with the impetus direction of liquid level when paddle 202's bucket form opening direction and forward stirring. When the bucket paddle 202 is operated to the highest position, the bucket paddle 202 is above the liquid level.

The agitator of this embodiment has the function of breaking shells, when forward stirring, the bucket shape paddle 202 of band saw tooth 2021 of agitator can cut the shell on the floating layer easily, and utilize bucket shape paddle 202 to press into the depths under the liquid level with the fritter shell that downcuts and stir, solve 4 inside straw floating layer problems of reactor effectively, be fit for the continuous fermentation process of mixed raw materials high concentration, still can easily stir freely when zymotic fluid concentration is high, the ability of breaking shells is strong, it is efficient to stir.

As shown in fig. 3 to 4, in the present embodiment, the paddle 202 is provided with a paddle 2022, the paddle 2022 is provided at a position away from the bucket-shaped opening, and the knife edge direction of the paddle 2022 is the same as the force application direction of the paddle 2022 and the liquid surface during the reverse stirring. When the liquid level crusts seriously, the agitator is started in a forward direction with large resistance, the agitator can be started in a reverse direction firstly, the crusted floating layer is cut by the plate cutter 2022 on the bucket-shaped blade 202, the contact area between the plate cutter 2022 and the crusting is small, the pressure intensity is larger under the action of the same torsional force, the resistance for cutting by the plate cutter 2022 is small, and after the crusting is divided into large blocky floating layers, forward stirring is carried out again to further break up each floating layer and press the floating layer below the liquid level, so that the stirring efficiency is improved.

In this embodiment, the paddle 202 has a triangular bucket shape. The acute angle of three angular hoppers is connected with stirring rake 2, can make the energy that pivot 1 transmitted on paddle 202 more balanced, concentrate, improves crust cutting and stirring efficiency when reducing the loss of energy.

In this embodiment, the agitator includes eight stirring rake 2, eight stirring rake 2 is followed the axle center of pivot 1 is the heliciform and installs evenly on pivot 1. A plurality of stirring rake 2 is heliciform evenly distributed along the axle center of pivot 1, makes the focus of agitator balanced, prevents to vibrate too big when arousing the agitator stirring because the unbalanced barycenter.

In this embodiment, eight stirring rake 2 is adjacent carry out fixed connection through oar arm connecting plate 3 between the stirring rake 2. Specifically, every stirring rake 2 extends the oar arm connecting plate 3 that is acute triangle-shaped to adjacent stirring rake 2, and two adjacent oar arm connecting plates 3 are through reasonable mechanical principle design, and its angle is mutually supported, and fixed connection to be in the same place adjacent stirring rake 2 fixed mounting. Oar arm connecting plate 3 is the rigid connection spare, through the connecting piece fixed connection of rigidity between the stirring rake 2, plays and strengthens the fixed bearing effect, has increased the steadiness of agitator, has played the effect of mutual support between the stirring rake 2 at the in-process of agitator stirring, and oar arm connecting plate 3 can increase the stirring area at the in-process of stirring simultaneously for the stirring scope is wider, improves stirring efficiency.

In this embodiment, the adjacent stirring paddles 2 have the same interval angle, and when viewed from the axis of the rotating shaft, the angles between the eight stirring paddles 2 and the adjacent stirring paddles 2 are 45 degrees. And the distance between the connection points of any two adjacent stirring paddles 2 on the rotating shaft 1 is the same. This setting makes a plurality of stirring rakes 2 evenly arrange in pivot 1, is favorable to the focus balance of agitator, reduces the mechanical vibration that the stirring in-process caused because of the focus skew.

The stirrer is a giant horizontal shaft paddle stirrer with low rotating speed and large torque. According to different reactor scales, the stirrer can be set to be single or multiple, the materials in the reactor are perfectly mixed by different heights distributed in the reactor, various materials in the reactor are fully mixed, the temperature supplementing heat energy in the reactor can be uniformly brought to the whole container, and continuous food can be provided for widely distributed biological bacteria, so that the organic substances in the reactor can be continuously and stably digested by anaerobic digestion, and the improvement of the gas production rate and the stable gas production are fundamentally guaranteed. The self weight of the driving motor is light, the self energy consumption is low, and the power of the motor is not more than 15 kW. The multi-stage planetary gear is adopted, the rotating speed is low, the torque is large, and the maintenance is simple and the operation is good. The stirrer is arranged in the reactor, the driving motor and the supporting frame are arranged outside the reactor, and the fermentation raw materials are perfectly sealed in the reactor and do not leak out to benefit from a precise sealing system. The structure of the paddle arm and the paddle of the stirrer is designed by a reasonable mechanical principle, a plurality of bucket-shaped paddles 202 with saw teeth 2021 are adopted, the paddle back is also provided with a plate knife 2022, the forward operation of the stirrer can uniformly stir the fermentation liquid in a large range in the axial direction and the radial direction, the bucket-shaped paddles 202 with the saw teeth 2021 of the stirrer can easily cut the outer shell of the floating layer while stirring in the forward direction, and simultaneously, the cut outer shell is pressed into the deep part under the liquid level for stirring, thereby effectively solving the problem of the straw floating layer in the reactor 4; when the liquid surface is crusted seriously and the stirrer is difficult to start in the forward direction, the stirrer is started in the reverse direction, the plate knife 2022 on the blade 202 can easily cut the crusted into large blocks to float on the liquid surface, and then the stirrer is started in the forward direction, and the sawtooth 2021 on the bucket-shaped blade 202 of the stirrer can cut the crusted on the liquid surface into small blocks and press the small blocks into the liquid surface, so that the aim of high-efficiency stirring is fulfilled.

The utility model discloses an inside stirring of reactor in the agitator, mainly used large-scale biogas engineering, to the raw materials of the high cellulose of the high lignin of straw class of internal complicated difficulty, this agitator can avoid the raw materials to float or sink, can also handle the condition of floating layer crust simultaneously, is particularly suitable for mixed raw materials high concentration continuous fermentation technology. The solid content of the fermentation liquor in the pool is up to 18 percent and the fermentation liquor can still normally run; excellent shell breaking and mixing capacity, completely avoids the phenomenon of crusting, and the gas production rate of unit tank volume is as high as 2.5m³D; the stirring is efficient, the energy consumption is ultra-low, the power of a driving electric motor is less than 15kW, the running electric charge is saved, and the running cost is reduced; the maintenance-free wall-through sealing technology has the advantages that the transmission part is positioned outside the reactor, the maintenance is carried out outside the tank, the reactor does not need to be opened, and the maintenance is safe and reliable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The paddle type stirrer with the shell breaking function is characterized by comprising a rotating shaft (1) and a stirring paddle (2) which are connected with each other, wherein the stirring paddle (2) is arranged perpendicular to the rotating shaft (1); the one end of stirring rake (2) with pivot (1) fixed connection, the other end of stirring rake (2) is provided with bucket form paddle (202), bucket form opening border on paddle (202) is established to the cockscomb structure, the bucket form opening direction of paddle (202) is unanimous with the impetus direction when forward stirring.

2. The paddle stirrer with the function of shell breaking according to claim 1, wherein a blade (2022) is arranged on the paddle (202), the blade (2022) is arranged away from the bucket-shaped opening, and the blade edge direction of the blade (2022) is consistent with the acting force direction during reverse stirring.

3. The paddle agitator with a function of breaking shells as claimed in claim 1 or 2, characterized in that the shape of the paddle (202) is a triangular bucket shape.

4. The paddle stirrer with the function of cracking the shell according to claim 1, wherein the stirrer comprises a plurality of stirring paddles (2), and the stirring paddles (2) are uniformly arranged on the rotating shaft (1) in a spiral shape along the axis of the rotating shaft (1).

5. The paddle stirrer with the function of breaking shells as claimed in claim 4, wherein a plurality of stirring paddles (2) are fixedly connected with each other through a connecting piece.

6. A paddle stirrer with a shell breaking function according to claim 4 or 5, wherein the adjacent stirring paddles (2) are spaced at the same angle, and the adjacent stirring paddles (2) are spaced at the same distance from each other at the connecting points of the rotating shaft (1).