CN201940196U

CN201940196U - Vertical pneumatic agitator

Info

Publication number: CN201940196U
Application number: CN201120037447.8U
Authority: CN
Inventors: 李君芳; 皇甫冠男; 皇甫利
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-14
Filing date: 2011-02-14
Publication date: 2011-08-24
Anticipated expiration: 2021-02-14

Abstract

The utility model relates to a vertical pneumatic agitator comprising a pneumatic part and an agitating part. The agitating part is arranged in a tank body (1) of an anaerobic digester; the pneumatic part is arranged at the top part outside the tank body (1) of the anaerobic digester; the pneumatic part and the agitating part are hinged; and a linkage frame part which can be used for controlling vertical motion and helical motion can be also arranged between the pneumatic part and the agitating part. The utility model has the advantages that: the vertical pneumatic agitator runs stably, has high safety factor and the characteristics of conquering the unyielding with yielding, automatically changes the speed according to the size of resistance force, can be used for uniformly agitating materials, and can do vertical motion and circular motion. Moreover, main parts are convenient to maintain.

Description

A kind of vertical agitator air

(1) technical field

The utility model relates to a kind of agitating device, especially for the vertical agitator air that stirs in the marsh gas fermentation processes.

(2) background technology

In biogas production process, under the conditions such as temperature, humidity and acid-base value that the fermentation object is suiting, can produce biogas.These biogas are earlier with the surface of bubble state attached to fermentation solid, along with bubble becomes big and the biogas that breaks is released gradually.Before bubble broke, it can cover the fermentation solid surface, stopped the intrusion of anaerobic bacteria to fermentation solid, had suppressed the carrying out of fermentation, caused fermenting speed slow.If fermentation solid is stirred, not only can break immediately attached to the outer bubble of fermentation solid discharges biogas, and methanogen can continue to immerse fermentation solid, makes fermenting speed become more violent.So, in biogas production, stir crucial effects all played in the lifting of fermenting speed and gas producing efficiency.

In China, especially to the north of the Changjiang river, winter temperature is lower, for reducing the heat energy supply in the anaerobic digestion process, adopts dried fermentation technique more, promptly by improving dry (TS) content, can reduce required consumption of heat energy in the mesophilic digestion process.But also produce some drawbacks simultaneously, work as fermentation solid concentration exactly and reach one regularly, the air bubble-shaped biogas of generation is wrapped up by fermentation solid from level to level, and these bubbles are difficult for discharging, so in the anaerobic digestion process of doing fermentation, set up agitating device and just seem particularly important.But because the fermentation solid content in the dried zymotechnique is in (as the concentration of the bright excrement of livestock) 15% or more, viscosity is very high, adopts common rotary machine to force stirring, and the moment of torsion of generation is huge, as easy as rolling off a log damage agitator; Because anaerobic digestion is to carry out in airtight container, in a single day agitator breaks down again, will repair, and therefore, in the anaerobic digestion process of dry method fermentation agitating device is set, and is the technical barrier that this professional domain researcher inquires into always.

(3) utility model technology contents

The purpose of this utility model is to overcome the defective that prior art exists, and a kind of vertical agitator air is provided.

For realizing above-mentioned purpose, the utility model is according to following technical scheme.Vertical agitator air comprises pneumatic part and mixing part, and the mixing part is positioned at the tank body of anaeroic digestor, and pneumatic part is positioned at the outer top of anaeroic digestor tank body.Described mixing part comprises stirs being connected spoke, being fixed on the axis, the end that stir the cage middle part and being connected the brace that the other end is connected with the stirring cage with axis of cage, two ends and stirring cage.Described pneumatic part comprises the piston rod that cylinder, piston two ends connect, wherein an end of a piston rod is hinged with stirring cage axis, be provided with on one end of another root piston rod and bump iron, two limit switches corresponding with bumping iron phase are fixed on the other column of cylinder, and magnetic valve is electrically connected with limit switch.

Can also set up to control between the pneumatic part of vertical agitator air and mixing part and stir cage and do and move both vertically, what can rotate again involves the frame part.

Describedly involve that frame part connects crossbeam by leading, involves crossbeam, lead, guide cylinder, the engagement inner cone is with the engagement outer cone and put helical blade and form; Guide cylinder is arranged on the upper end of anaeroic digestor tank wall, and an end of lead penetrates guide cylinder, and the other end will lead and connect crossbeam, involve crossbeam serial connection, leaves the gap between the crossbeam leading to connect crossbeam and involve; The engagement outer cone is arranged on to lead and connects on the crossbeam, and axis passes the engagement outer cone and at top fixed engagement inner cone; Helical blade is arranged on and stirs in the cage; It is hinged with pneumatic part to involve the frame part.

One end of guide cylinder is provided with the activity capping.

Of the present utility model superior be in: 1, vertical agitator air operates steadily, and safety coefficient is big; 2, agitator has the characteristic of defeating a force with a tenderness, according to the automatic change speed of resistance size; 3, agitator stirs to material, during this agitator operation, both moves both vertically, and makes circular motion again; 4, critical piece is easy to maintenance.

(4) description of drawings

Accompanying drawing is a structural representation of the present utility model.

(5) specific embodiment

Concrete structure of the present utility model sees also accompanying drawing.Vertical agitator air comprises pneumatic part, mixing part, and the mixing part is positioned at the inside of anaeroic digestor tank body 1, and pneumatic part is positioned at the top of anaeroic digestor tank body 1 outside.Described mixing part comprises that the some spokes 3 that stir cage 2, two ends connection stirring cage 2, axis 5, an end that is fixed on stirring cage 2 middle parts are connected the brace 6 that the other end is connected with stirring cage body with axis; Described pneumatic part comprises cylinder 10, is arranged on the stopper rod at piston two ends, wherein a piston rod is hinged with the axis 5 that stirs cage 2, be provided with on another root piston rod and bump iron 13, be fixed on the other column of cylinder with bumping iron 13 corresponding two limit switches 12, magnetic valve 14 is electrically connected with limit switch 12.

Vertical agitator air work is that the transmission of power by cylinder is driven.When piston moves downward, the piston rod at its two ends, one to draw the axis that stirs cage 2 downward, plays a part downward stirring.During bumping iron 13 and move to the position of lower limit switch 12B on another root piston rod, bump iron 13 and overlap energising with it, 14 commutations of control magnetic valve, the then motion that makes progress of piston.In like manner, when piston moves upward, the piston rod at its two ends, one drawing stir cage 2 axis upwards, play a part upwards to stir.During bumping iron 13 and move to the position of top limit switch 12A on another root piston rod, bump iron 13 and overlap energising with it, 14 commutations of control magnetic valve, then piston moves downward and finishes a vertical up-or-down movement.The stirring vertically of whole agitator realizes carrying out automatically synchronously with cylinder fully.Spoke 3 wherein plays a part to assist to stir.Brace 6 works to add strong mixing cage 2.

Better mode of the present utility model is to increase to involve the frame part between pneumatic part and mixing part, and this part can be controlled and stir cage 2 and do and move both vertically, and can rotate again.A kind of mode wherein be involve that frame part connects crossbeam 15 by leading, involves crossbeam 16, lead 17, guide cylinder 9, engagement inner cone 8 is with engagement outer cone 7 and put helical blade 3 and form; Guide cylinder 9 is arranged on the upper end of anaeroic digestor tank body 1 outer wall, and an end of lead 17 penetrates guide cylinder 9, and the other end will lead and connect crossbeam 15, involve crossbeam 16 serial connection, leaves the gap leading to connect crossbeam 15 and involve between the crossbeam 16; Engagement outer cone 7 is arranged on to lead and connects on the crossbeam 15, and axis 5 passes engagement outer cone 7 and at top fixed engagement inner cone 7; Helical blade 3 is arranged on and stirs in the cage 2; It is hinged with pneumatic part to involve the frame part, and it is hinged with a kind of piston rod wherein promptly to involve crossbeam 16.

As mentioned above, involving the frame part also is to be promoted to finish upwards or downward work by the piston in the cylinder.When piston downwards or when moving downward, whole involve frame also thereupon about.Owing to lead and connect crossbeam 15, involve between the crossbeam 16 distance institute extremely, when stirring the final position that cage 2 moves downward, mesh inner cone 8 and mesh between the outer cone 7 and can generation separate, be positioned at the helical blade 3 that stirs cage 2 this moment and the power that moves both vertically can be changed into the power of tangential motion, stir cage 2 generation rotations thereby make; When stirring the final position that cage 2 moves upward, engagement between engagement inner cone 8 and the engagement outer cone 7, the reverse tangential force that acts on the helical blade 3 is delivered on the guide cylinder 9 via the lead 16 that involves on the frame, stops to stir cage 2 reverse rotations, only moves upward.Like this, stirring cage 2 is whenever done once and is moved up and down, just towards angle of a direction rotation.Repeatedly motion back stirring cage 2 just can rotate a circle.

Usually the stirring body of agitator is to move in a circle, because the tank diameter of anaeroic digestor and highly all bigger, thereby the huge moment of torsion of meeting formation that rotatablely moves, this not only needs very big rotary power, and huge moment of torsion also can cause turning arm to fracture.And the utility model to be the direction of motion with stirring body become vertical direction, the axis that promptly stirs cage 2 only can be subjected to pulling force, this makes and can make bearing capacity increase centuplicate in same stressed cross section, has improved the safety coefficient that stirs the cage running body greatly.

The utlity model has the characteristic of defeating a force with a tenderness, according to the automatic change speed of resistance size.Stirring cage 2 is doing when moving both vertically up and down, if material concentration is rarer, the stirring resistance is less, the movement velocity of agitator will be very fast, if material concentration is comparatively dense, it is bigger to stir resistance, and the movement velocity of agitator will be slack-off, comes the dynamic drag of constant agitation by the speed speed that moves up and down.

Its mechanics expression way is: F=W+V ²λ ∑ S

The power of F-cylinder

The gravity of W-agitator

The V-movement velocity

λ-material viscosity resistance modulus

∑-motion contact area

In the mechanics expression way, cylinder power, stirring cage 2 gravity and motion contact area all are definite values, and when the material viscosity resistance modulus increased, speed just diminished, and when the material viscosity resistance modulus diminished, it is big that speed just becomes.This alr mode is the speed that changes motion with the size of resistance, make whole system have agile sense, by automatic speed regulation, the complexity that the resistance that the perception solid material forms is overcome, the speed no matter agitator moves is fast or slow, and the active force that agitator discharges is constant.Make that like this agitator operates steadily.

Stirring food steamer of the present utility model stirs to material.When this stirs the cage operation, both moved both vertically, made circular motion again.Position near helical blade 3 is directly stirred by blade, and the material of close middle part is stirred by the spoke 4 of each layer, and stirring cage 2 is whenever done once and moved up and down, will rotate an angle automatically, stir the position and obtain conversion, wait to rotate a week after, each position all obtains stirring, and does not stay the dead angle.

The utility model critical piece is easy to maintenance.It is cylinder that agitator needs the parts of often maintenance, is arranged on two leads and the guide cylinder on tank body top, and this structure had both played guide effect and stoped and stirred food steamer 2 reverse rotation effects, played the effect of maintenance cylinder again.When needing repairing cylinder, only need open the capping of two lead upper ends, use lifting gear will involve frame and upwards draw, can pull down cylinder, keep in repair.

Claims

1. a vertical agitator air comprises pneumatic part and mixing part, it is characterized in that the mixing part is positioned at the tank body of anaeroic digestor (1), and pneumatic part is positioned at the outer top of anaeroic digestor tank body (1);

Described mixing part comprises stirs being connected spoke (4), being fixed on the axis (5), the end that stir cage (2) middle part and being connected the brace (6) that the other end is connected with stirring cage (2) with axis (5) of cage (2), two ends and stirring cage (2);

Described pneumatic part comprises the piston rod that cylinder (11), piston two ends connect, wherein an end of a piston rod is hinged with the axis (5) that stirs cage (2), be provided with on one end of another root piston rod and bump iron (13), two limit switches (12) corresponding with bumping iron phase are fixed on the other column of cylinder, and magnetic valve (14) is electrically connected with limit switch (12).

2. a kind of vertical agitator air as claimed in claim 1 is characterized in that setting up between pneumatic part and mixing part controlling and stirs cage (2) and do and move both vertically, and what can rotate again involves the frame part.

3. a kind of vertical agitator air as claimed in claim 2 is characterized in that describedly involving that frame part connects crossbeam (15) by leading, involves crossbeam (16), lead (17), guide cylinder (9), engagement inner cone (8) is with engagement outer cone (7) and put helical blade (3) and form; Guide cylinder (9) is arranged on the upper end of anaeroic digestor tank body (1) outer wall, one end of lead (17) penetrates guide cylinder (9), the other end will lead and connect crossbeam (15), involve crossbeam (16) serial connection, leave the gap leading to connect crossbeam (15) and involve between the crossbeam (16); Engagement outer cone (7) is arranged on to lead and connects on the crossbeam (15), and axis (5) passes engagement outer cone (7) and at top fixed engagement inner cone (7); Helical blade (3) is arranged on and stirs in the cage (2); It is hinged with pneumatic part to involve the frame part.

4. a kind of vertical agitator air as claimed in claim 3 is characterized in that an end of guide cylinder (9) is provided with activity capping (10).