CN104805126A - Method for automatically pumping biogas slurry from parallel type biogas tanks - Google Patents

Abstract

The invention discloses a method for automatically pumping biogas slurry from parallel type biogas tanks. The method comprises the following steps: pouring fermentation raw materials into a feeding opening of a fermentation pool, wherein the fermentation pool consists of a plurality of fermentation sub-pools of the same specification, the fermentation sub-pools are arranged on the same side, the fermentation raw materials are fermented in fermentation chambers of the fermentation sub-pools to produce biogas, the biogas is accumulated in a gas storage plate on the upper part of each fermentation chamber, when the biogas is output to a pneumatic diaphragm pump in each water pressure chamber through a gas guide pipe on the top of each gas storage plate, the gas pressure of the biogas in each gas storage plate is reduced, the biogas slurry in the water pressure chambers unidirectionally flows into the fermentation pool through a water drainage pipe at the feeding opening, and thus cyclic flowing of the biogas slurry is finished; meanwhile, the biogas slurry stored in the water pressure chambers is drained through the pneumatic diaphragm pumps by taking the gas pressure of the biogas as power.

Description

The method of parallel methane-generating pit Automatic Extraction natural pond liquid

Technical field

The present invention relates to a kind of methane fermentation system.

Background technology

Hydraulic pipeline type methane-generating pit, fermentation rate is increased by being flowed in pipeline by fermentation raw material, improve gas production rate, also there is drawback in it: 1, fermentation raw material is easily in pipeline inner accumulated, is particularly fermentation raw material with stalk, very easily cause obstruction, if blocked in opening for feed or discharge port position, can be dredged by rod, if block in pipeline depths, cannot clear up, and fermentation pipeline must be dismantled and cleared up; 2, the poor fluidity that flows in pipeline of the fermentation raw material of pipeline type methane-generating pit, when with stalk being particularly fermentation raw material, the poor fluidity of stalk, equally easily causes obstruction, and affects fermentation efficiency, also affects discharging.

Animal excrement are fermented the natural pond liquid made, and tasteless and fertilizer efficiency after fermentation after fermentation is more than 10 times of general chemistry synthetic fertilizer; Water quality characteristic is very easily absorbed by plants, and can not as chemical fertilizer, and natural pond liquid usage quantity too much also can not burn seedling, as the first-selected fertilizer of green ecological plantation, natural pond liquid has: effect of expelling parasite, desinsection, and the lethality rate of larva and worm's ovum is more than 90%, belongs to green biological insecticidal agent; Natural pond liquid in use, is held bad consumption and also can not be caused and burn seedling phenomenon, and this is also one of incomparable place of general chemistry synthetic fertilizer.

Owing to containing more impurity in the liquid of natural pond, extracted by common water pump, easily cause the obstruction of water pump, and water pump is by driven by power, does not meet the requirement of green energy resource recycle.

Applicant finds a kind of pneumatic diaphragm pump (patent No.: 2012101329572) of applicant Anhui Lechang Pneumatic Fluid Equipment Technology Co., Ltd. application by retrieval, it discloses the product similar with the present invention, its air pressure adopting source of the gas to produce as power in order to drive the bilateral reciprocation of diaphragm, its drawback existed is: consume energy larger, because center spool just plays the effect of regulation and control gas trend in bilateral reciprocation process, the kinetic energy that center spool produces in bilateral reciprocation process does not make full use of, and the diaphragm of pneumatic diaphragm pump is when moving to maximum end by center spool, by continuing the motion that delivering gas produces, so, also exist and export the more problem of source of the gas, the cost of diaphragm is higher, and the price of pneumatic diaphragm pump is improved greatly.

Summary of the invention

Technical problem to be solved by this invention is that pipeline type methane-generating pit easily blocks, natural pond liquid poor fluidity, not easily promotes being uniformly distributed of fermentation raw material and bacterial classification; And the invention provides and solve existing pneumatic diaphragm pump and to consume energy large problem.

For solving the problems of the technologies described above, technical scheme provided by the invention is.

The device of parallel methane-generating pit Automatic Extraction natural pond liquid, it comprises fermentation vat, water pressure house, fermentation vat is composed in parallel by the sub-fermentation vat of multiple same size and homonymy is placed, sub-fermentation vat comprises fermentation vat body, and one end of fermentation vat body is opening for feed, and the other end is discharge port, the middle part of fermentation vat body is fermentation chamber, fermentation chamber is connected with opening for feed and discharge port respectively, opening for feed is connected with opening for feed water shoot, discharge port is connected with discharge port water shoot; Fermentation chamber is fixedly connected with gas storage plate by bracing or strutting arrangement, and gas storage plate is that top and surrounding seal and lower ending opening, and gas storage plate is opening for feed gas block panel near opening for feed one end sidewall, and gas storage plate is discharge port gas block panel near discharge port one end sidewall; Gap is left between the upper and lower sidewall of the gas storage plate inwall respectively at fermentation chamber; Also be provided with pull bar in first fermentation vat, described pull bar comprises cross bar and montant, and cross bar is active in fermentation chamber indoor, and montant is through the gap gas storage plate top and bottom sidewall and fermentation chamber chamber interior walls, and at least one side of cross bar is connected with the montant on vertical direction; Fermentation system also comprises the first aqueduct and the second aqueduct, the discharge port water shoot of the first sub-fermentation vat of aqueduct UNICOM, second aqueduct has two and the two ends of difference UNICOM first aqueduct, the other end of the second aqueduct connects water pressure house respectively, the second aqueduct is provided with the check valve of the unidirectional inflow water pressure house of natural pond liquid in control first aqueduct; Water pressure house at least connects the opening for feed water shoot of a fermentation vat body, and opening for feed water shoot is provided with the check valve of the natural pond liquid unidirectional inflow fermentation chamber room controlled in water pressure house; The horizontal plane at the second aqueduct lower-most point place is higher than the horizontal plane at the first aqueduct vertex place, and the first aqueduct lower-most point and discharge port water shoot lower-most point are positioned on same horizontal plane; This device also comprises pneumatic diaphragm pump, and the air inlet port of pneumatic diaphragm pump connects the airway of gas storage plate by tracheae, airway is provided with valve body, and the feed-water end of pneumatic diaphragm pump connects the natural pond liquid in water pressure house.

The further improvement of such scheme.

Gas storage plate is also provided with several baffle plates between opening for feed gas block panel and discharge port baffle plate, form a fermentation zone between entry/exit material mouth gas block panel and adjacent baffle plate or between adjacent baffle plate, the top of each fermentation zone is provided with airway that is separate and Hu Bu UNICOM.

The further improvement of such scheme.

Above-mentioned bracing or strutting arrangement is be arranged at the back up pad in fermentation chamber indoor profile, and the cross bar both end sides of above-mentioned pull bar is connected to the montant be positioned on the vertical direction of the same side, and the top of montant is provided with hand-held pole.

The method of parallel methane-generating pit Automatic Extraction natural pond liquid, its step comprises:

Fermentation raw material is poured in the opening for feed of fermentation vat, fermentation vat is made up of the sub-fermentation vat of several same sizes and homonymy is placed, fermentation raw material produces biogas in the indoor fermentation of the fermentation chamber of sub-fermentation vat and accumulates in the gas storage plate on fermentation chamber top, the biogas natural pond liquid extruded in accumulation process in gas storage plate flows out and makes the natural pond liquid liquid level in sub-fermentation vat increase, and natural pond liquid enters in the sub-fermentation vat on fermentation efficiency ground by the first aqueduct connecting the discharge port water shoot of some sub-fermentation vats by the sub-fermentation vat that fermentation efficiency is high; When natural pond liquid liquid level in group fermentation vat reaches the lower-most point of the second aqueduct of UNICOM first aqueduct, natural pond liquid in fermentation vat will by the unidirectional inflow water pressure house of the second aqueduct, along with the store content of biogas increases, the amount that the natural pond liquid in fermentation vat flows into water pressure house is larger.

By the airway at gas storage plate top to when being positioned over that in water pressure house, pneumatic diaphragm pump exports biogas, biogas air pressure in gas storage plate reduces, the natural pond liquid stored in water pressure house by the unidirectional inflow fermentation vat of opening for feed water shoot, thus will complete circulating of natural pond liquid; Meanwhile, the natural pond liquid stored in water pressure house, is discharged for power with biogas air pressure by pneumatic diaphragm pump.

Above-mentioned fermentation raw material can be excrement of animals, stalk etc.

The advantage of methane fermentation system of the present invention is:

1, sub-fermentation vat parallel with one another, can use as one-level water pressure house, promotes that natural pond liquid flows between multiple sub-fermentation vat, and promotes being uniformly distributed of bacterial classification, improve the fermentation efficiency of whole system.

2, solving obstructing problem and the fermentation raw material skewness problem of pipeline type methane-generating pit, by pulling pull bar in fermentation chamber indoor sport, driving the reciprocally swinging of cross bar, effective dredging pipeline and being uniformly distributed of fermentation raw material can be promoted.

3, do not disclose in prior art and utilize biogas as power wheel drive pneumatic diaphragm pump Automatic Extraction natural pond liquid, biogas is changed by bioenergy, and to environment without any harm, existing pneumatic diaphragm pump power is all adopt electric energy conversion.

Pneumatic diaphragm pump, comprise the pump housing, centrosome is provided with in the pump housing, centrosome inner sleeve dress controlling valve, the two ends, left and right of controlling valve connect piston respectively, airtight air chamber is formed between piston outer side wall and the diaphragm being arranged on centrosome, fluid chamber is formed between diaphragm and the pump housing, venting cavity is formed between piston inner side-wall and centrosome, exhaust-duct in venting cavity and the pump housing is connected, the inlet triplet for water be communicated with fluid chamber is provided with bottom the pump housing, pump housing top is provided with the outlet three way be communicated with fluid chamber, dash ball is also provided with in the pump housing, dash ball is arranged at inlet triplet for water and fluid chamber link position place and is arranged at outlet three way and fluid chamber link position place, it is characterized in that:

Controlling valve, it comprises valve core housing and permanent sleeve, permanent sleeve is socketed on valve core housing central position, permanent sleeve upper end is socketed with regulation and control axle, the lower end of permanent sleeve is socketed with center spool, permanent sleeve is provided with the secondary breather hole of UNICOM's regulation and control Zhou Yu center spool, controlling valve two ends are socketed with the second spool respectively;

Regulation and control axle two ends are provided with lug boss, annular recesses between two lug bosses and permanent sleeve inner side-wall form annular inlet chamber room, the two ends, left and right of permanent sleeve upper end are socketed with two the first spools respectively, be slidably connected in first spool regulation and control axle, form discharge chamber between the outer side wall of the first spool, the inner side of the second spool and valve core housing inner side-wall, the first spool is provided with the one-level breather hole of UNICOM's discharge chamber and inside, permanent sleeve upper end;

About the sidewall of center spool, end is respectively arranged with air cavity, the left and right end of center spool is respectively arranged with step chamber, the step chamber of the air cavity corresponding side surface with it of left and right end is connected, the ring-shaped step of the second spool to insert respectively in the step chamber of the center spool of corresponding side surface with it and forms left chamber and right chamber, the ring-shaped step upper and lower ends of the second spool and discharge chamber are connected, the bottom of air cavity is connected by the step chamber of three grades of corresponding sides of breather hole, the drive end of coupling shaft is connected respectively in the step chamber at spool two ends, center, the output terminal of coupling shaft connects water eliminator, coupling shaft is slidably socketed in the second spool,

Above-mentioned secondary breather hole has two and difference UNICOM air cavity, and the distance between the lug boss high order end at regulation and control axle two ends is equal with secondary breather hole width between centers, and the distance between the lug boss low order end at regulation and control axle two ends is equal with secondary breather hole width between centers;

The annular outer wall of valve core housing is provided with three road annular recessess, comprises central recess, air discharge duct, and the bottom of annular center groove is provided with some air inlet ports be connected with permanent sleeve upper end inner chamber, and the bottom of air discharge duct is provided with some venting holes be connected with discharge chamber;

Be provided with air supply channel in the pump housing, this air supply channel leads to central recess, and be also provided with in the pump housing and lead to extraneous exhaust-duct, air discharge duct is led in the inner of this exhaust-duct, and venting cavity is also led in the inner of exhaust-duct.

The further improvement of such scheme.

Permanent sleeve is made up of upper permanent sleeve and lower permanent sleeve, upper permanent sleeve and lower permanent sleeve integrated shaping, in upper permanent sleeve, slip cap is connected to regulation and control axle, and in lower permanent sleeve, slip cap is connected to center valve core.

The further improvement of such scheme.

Two ends, upper permanent sleeve left and right are socketed with the first left end spool and the first right-hand member spool respectively, and above-mentioned one-level breather hole is the first breather hole and the second breather hole that are arranged at permanent sleeve inner chamber and discharge chamber in the UNICOM on the first left end spool and the first right-hand member spool respectively.

The further improvement of such scheme.

The sidewall two ends of center spool are respectively arranged with annular left air cavity and the right air cavity of annular, above-mentioned secondary breather hole is be arranged at the 3rd breather hole above left air cavity and right air cavity and the 4th breather hole respectively, permanent sleeve inner chamber and left air cavity in 3rd breather hole UNICOM, permanent sleeve inner chamber and right air cavity in the 4th breather hole UNICOM.

The further improvement of such scheme.

Two ends, spool left and right, center are respectively arranged with left step chamber and right step chamber, and above-mentioned three grades of breather holes are the 5th breather hole and the 6th breather hole in the step chamber of left air cavity and right air cavity difference UNICOM corresponding side surface.

Utilize the method for pneumatic diaphragm pump extracting liquid of the present invention and the principle of work of pneumatic diaphragm pump.

The original state of controlling valve is: center spool is in the central position of permanent sleeve lower end, and controlling valve is in the central position of permanent sleeve upper end, and the left lug boss regulating and controlling axle blocks the 3rd breather hole, and the right lug boss of regulation and control axle blocks the 4th breather hole.

Source of the gas is entered in central recess by air supply channel, and enters air inlet chamber by the some air inlet ports be arranged at bottom central recess, and this air inlet chamber is made up of the annular recesses regulated and controled between the lug boss of axle two ends and permanent sleeve upper end inner chamber; Meanwhile, regulation and control axle can not be in the state of force balance completely, moves so gas push regulates and controls axial side.

When axially left side is mobile in gas push regulation and control, regulation and control axle left end inner chamber is by being arranged at the left bank air cavity UNICOM of the first breather hole on the left end first left end spool of permanent sleeve upper end and the first left end spool left end, because left bank air cavity upper end is by left bank pore and left bank air drain UNICOM, and due to the exhaust-duct UNICOM in left bank air drain and the pump housing, regulation and control axle left end inner chamber is communicated with ambient atmosphere, when regulation and control axially move left, discharges the air in regulation and control axle left end inner chamber; Regulate and control axial left end when moving, air inlet chamber and the 3rd breather hole UNICOM be arranged between permanent sleeve upper end and permanent sleeve lower end; Regulation and control axle right-hand member inner chamber is by the right discharge chamber UNICOM of the second breather hole and the first right-hand member spool right-hand member that are arranged at the right-hand member first right-hand member spool of permanent sleeve upper end, because right discharge chamber upper end is by right venting hole and right air discharge duct UNICOM, and due to the exhaust-duct UNICOM of right air discharge duct and the pump housing, regulation and control axle right-hand member inner chamber is communicated with ambient atmosphere, when regulation and control axially move left, volume of air in regulation and control axle right-hand member inner chamber increases, regulation and control axle right-hand member inner chamber and the 4th breather hole UNICOM be arranged between permanent sleeve upper end and permanent sleeve lower end; Meanwhile, the annular left air cavity UNICOM of center spool outer side wall left end of air inlet chamber by being slidably socketed in the 3rd breather hole and permanent sleeve lower end, gas enters in left air cavity, owing to passing through the 5th breather hole UNICOM between left air cavity and spool left end step chamber, center, and the second left end spool of center spool left end to insert in spool left end step chamber, center and forms left chamber, makes source of the gas enter in left chamber; Meanwhile, right air cavity due to center spool outer side wall right-hand member passes through the right-hand member step UNICOM of the 6th breather hole and center spool, and the second right-hand member spool due to center spool right-hand member inserts in spool right-hand member step chamber, center and forms right chamber, right air cavity and right chamber are connected, and because right air cavity is by the 4th breather hole and regulation and control axle right-hand member inner chamber UNICOM, right air cavity and exhaust-duct are connected.

Source of the gas enters in left chamber, left chamber's internal gas pressure is made to be greater than right chamber, the center spool of making moves right, meanwhile, regulation and control axle continues to be moved to the left, center spool moves right and drives the movement of left coupling shaft and the right coupling shaft be attached thereto in process, left coupling shaft moves right in process, drive left piston moves to right, sealed chamber's air pressure between left piston and left diaphragm is reduced, left diaphragm shrinkage strain, left fluid chamber volume between left diaphragm and the pump housing is increased, and make left piston inner side-wall and the left venting cavity volume be arranged between the centrosome in the pump housing reduces, because left venting cavity and exhaust-duct are connected, the volume of air reduced in left venting cavity all can be discharged by exhaust-duct, reach the object of absorbing fluid on the left of the pump housing, in like manner, moving to right of right piston, right diaphragm upholds distortion, and right fluid chamber volume between right diaphragm and the pump housing is reduced, and the right venting cavity volume between right piston inner side-wall and the centrosome being arranged in the pump housing increases, and reaches the object of expel liquid on the right side of the pump housing.

Regulation and control axially move left in process, and the left end of regulation and control axle stretches out right-hand member and shrinks, and the left end of regulation and control axle meets with the left piston moved right, and along with source of the gas is constantly to left chamber's conveying, left piston drives regulation and control axle to move right together; When in right chamber, gas is fully drained, left piston drives axial the moving right to regulation and control axle left end is protruding of regulation and control block the 3rd breather hole and regulate and control axle right-hand member projection obstruction the 4th breather hole position.

Due to the obstruction of the 3rd breather hole and the 4th breather hole, and regulate and control axle left end and left piston is fitted, and the air pressure due to inlet chamber indoor is greater than regulation and control axle right-hand member air pressure, make axle to move right under the effect of air pressure and inertia, regulation and control axially move right in process, and regulation and control axle left end shrinks and right-hand member stretches out.

Regulation and control axially move right in process, air inlet chamber and the 4th breather hole are connected, and the left end inner chamber of permanent sleeve upper end and the 3rd breather hole are connected, source of the gas enters right chamber, air pressure in right chamber is increased, thus the center spool of making is moved to the left, and the gas in extruding center left chamber is by the 5th breather hole, 3rd breather hole, first breather hole and left bank pore are discharged, center spool is moved to the left in process, drive the movement of left coupling shaft and right coupling shaft, and drive the movement of left piston and right piston, the shrinkage strain of stretching out distortion and right diaphragm of left diaphragm, left fluid chamber volume is reduced, left venting cavity volume increases, reach expel liquid object on the left of the pump housing, meanwhile, right fluid chamber volume increases, right venting cavity volume reduces, reach absorbing fluid object on the right side of the pump housing.

Right piston is moved to the left in process and meets with regulation and control axle right-hand member, and drives regulation and control axially to move left, when the gas in left chamber is discharged completely, and left protruding end sealing the 3rd breather hole of regulation and control axle, regulation and control axle right-hand member sealing the 4th breather hole.

In like manner, due to the obstruction of the 3rd breather hole and the 4th breather hole, and regulate and control axle right-hand member and right piston is fitted, and the air pressure due to inlet chamber indoor is greater than regulation and control axle left end air pressure, make axle to be moved to the left under the effect of air pressure and inertia, regulation and control axially move left in process, and regulation and control axle left end stretches out and right-hand member shrinks.

Motion and so forth, realizes the left and right reciprocally swinging of center spool, and realizes the flexible of left and right piston, thus reaches the object of pump housing extraction or absorbing fluid.

The further improvement of such scheme.

Permanent sleeve is made up of upper permanent sleeve and lower permanent sleeve, upper permanent sleeve and lower permanent sleeve integrated shaping, in upper permanent sleeve, slip cap is connected to regulation and control axle, and in lower permanent sleeve, slip cap is connected to center valve core.

The further improvement of such scheme.

Above-mentioned source of the gas is the gas such as air, nitrogen, Sweet natural gas of compression.

The further improvement of such scheme.

Above-mentioned liquid is the liquid of band particle.

The further improvement of such scheme.

Above-mentioned liquid is high viscosity liquid.

The further improvement of such scheme.

Above-mentioned liquid is volatile liquid.

The further improvement of such scheme.

Above-mentioned liquid is inflammable liquid.

The further improvement of such scheme.

Above-mentioned liquid is the liquid of severe toxicity.

A kind of pneumatic diaphragm pump (patent No.: 2012101329572, hereinafter referred to as documents) of the pneumatic pump in the present invention and existing record is compared, difference of the present invention and the invention has the advantages that.

The motion of the left and right piston of center spool Direct driver 1, in the present invention, and the center spool in documents just plays the effect of regulation and control gas flow, does not make full use of the power of center spool, so the present invention is more energy-conservation.

2, the piston in the present invention and form airtight air chamber between diaphragm, does not need by external gas source, drives, save energy more by applying air pressure.

3, eliminate the gas passage between left side air vent in documents and diaphragm in the present invention, thus make structure of the present invention more reasonable, manufacture difficulty reduces.

Being of another one intention of the present invention, the invention discloses using biogas as source of the gas, thus drive pneumatic diaphragm pump Automatic Extraction natural pond liquid, realize the comprehensive utilization of clean energy, the invention also discloses the method utilizing biogas to drive pneumatic pump Automatic Extraction natural pond of the present invention liquid, do not need other energy such as power consumption, thus more green, environmental protection.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention, simple introduction is done below by the accompanying drawing used required in embodiment, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the perspective view of methane fermentation system of the present invention.

Fig. 2 is the perspective view of methane fermentation system of the present invention.

Fig. 3 is the cross-sectional view of the first fermentation vat of the present invention.

Fig. 4 is the cross-sectional view of the first fermentation vat of the present invention.

Fig. 5 is the perspective view of pull bar of the present invention.

Fig. 6 is pneumatic pump state of the present invention structural representation for the moment.

Fig. 7 is controlling valve state of the present invention structural representation for the moment.

Fig. 8 is the matching relationship schematic diagram of valve core housing of the present invention and permanent sleeve.

Structural representation when Fig. 9 is controlling valve state two of the present invention.

Structural representation when Figure 10 is controlling valve state three of the present invention.

Structural representation when Figure 11 is controlling valve state four of the present invention.

Structural representation when Figure 12 is controlling valve state five of the present invention.

Structural representation when Figure 13 is controlling valve state six of the present invention.

Figure 14 is center of the present invention spool cross-sectional view.

Accompanying drawing illustrates:

10, the first fermentation vat; 12, opening for feed; 13, opening for feed water shoot; 14, discharge port; 15, discharge port water shoot; 16, ferment chamber; 18, back up pad.

20, the second fermentation vat.

30, the 3rd fermentation vat.

40, water pressure house; 42, vapor pipe.

50, gas storage plate; 52, opening for feed gas block panel; 53, discharge port gas block panel; 54, the first baffle plate; 55, second baffle.

60, pull bar; 62, cross bar; 64, montant; 66, hand-held pole.

70, the first aqueduct.

80, the second aqueduct.

100, controlling valve; 110, central recess; 112, air inlet port; 120, left bank air drain; 122, left bank pore; 130, right air discharge duct; 132, right venting hole; 140, axle is regulated and controled; 142, left lug boss; 144, right lug boss; 150, the first left end spool; 152, the first breather hole; 154, left bank air cavity; 160, the first right-hand member spool; 162, the second breather hole; 164, right discharge chamber; 170, center spool; 171, the 5th breather hole; 172, left coupling shaft; 173, the 6th breather hole; 174, right coupling shaft; 175, left air cavity; 176, left chamber; 177, right air cavity; 178, right chamber; 180, the second left end spool; 190, the second right-hand member spool.

210, left piston; 220, right piston.

310, the 3rd breather hole; 320, the 4th breather hole.

410, inlet triplet for water; 420, outlet three way; 430, dash ball.

500, valve core housing; 510, upper permanent sleeve; 520, lower permanent sleeve.

610, left fluid chamber; 620, right fluid chamber; 630, left air chamber; 640, left venting cavity; 650, right air chamber;

660, right venting cavity; 670, left diaphragm; 680, right diaphragm.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making under creative work prerequisite, and the every other embodiment obtained, all belongs to scope.

As Figure 1-5, this device is ultra-high efficiency methane fermentation system, it is in parallel by the fermentation vat of multiple same size, because the fermentation efficiency of each fermentation vat is different, natural pond liquid enters to the low methane-generating pit of fermentation efficiency by the fermentation vat that fermentation efficiency is high, the fermentation vat that fermentation efficiency is low will as first step water pressure house, and being uniformly distributed of bacterial classification can be promoted in the liquid convection process of natural pond, when in each fermentation vat, all liquid liquid level in natural pond reaches the lower-most point of water pressure house, the natural pond liquid in each fermentation vat flows in water pressure house by aqueduct again; Use the biogas of gas storage board memory storage, the natural pond liquid liquid level in fermentation vat declines, and in water pressure house, natural pond liquid is back in fermentation vat again, completes circulating of natural pond liquid; And the present invention also comprises pull bar, as shown in Figure 5, by pull bar moving back and forth in fermentation vat, can effectively promote being uniformly distributed of fermentation raw material, and when fermentation vat occurs to block, pull bar dredging pipeline can be utilized, reach the object of anti-blocking.

As shown in Figure 1, 2, fermentation vat of the present invention comprises the sub-fermentation vat of three same sizes and parallel connection, the feed end that sub-fermentation vat is respectively the first fermentation vat 10, second fermentation vat 20 and the 3rd fermentation vat 30, three sub-fermentation vats is positioned at the same side, and discharge end is positioned at the same side.

First fermentation vat 10 comprises fermentation vat body, one end of fermentation vat body is opening for feed 12, the other end is discharge port 14, the middle part of fermentation vat body is fermentation chamber 16, fermentation chamber 16 is connected with opening for feed 12 and discharge port 14 respectively, opening for feed 12 is connected with opening for feed water shoot 13, discharge port 14 is connected with discharge port water shoot 15; Fermentation chamber 16 is fixedly connected with gas storage plate 50 by bracing or strutting arrangement, gas storage plate 50 is that top and surrounding seal and lower ending opening, gas storage plate 50 is opening for feed gas block panel 52 near opening for feed 12 one end sidewall, and gas storage plate 50 is discharge port gas block panel 53 near discharge port 14 one end sidewall; Gap is left between the upper and lower sidewall of gas storage plate 50 inwall respectively at fermentation chamber 16; Also be provided with pull bar 60 in first fermentation vat 10, described pull bar 60 comprises cross bar 62 and montant 64, and cross bar 62 is active in fermentation chamber 16, and montant 64 is through the gap gas storage plate top and bottom sidewall and fermentation chamber 16 inwall.

Above-mentioned bracing or strutting arrangement is when being arranged at the back up pad 18 on fermentation chamber 16 medial surface, as shown in Figure 4, cross bar 62 both end sides of above-mentioned pull bar 60 is connected to the montant 64 be positioned on the vertical direction of the same side, the top of montant 64 is provided with the hand-held pole 66 in horizontal direction, by manually pulling hand-held pole 66, drive cross bar 62 to move back and forth in fermentation chamber 16, promote being uniformly distributed and dredging pipeline of fermentation raw material and bacterial classification.

Above-mentioned bracing or strutting arrangement is be arranged at the pillar stiffener between fermentation chamber 16 and gas storage plate 50, due to the restriction of pillar stiffener, and the montant 64 on the vertical connecting direction, cross bar 62 one end of above-mentioned pull bar 60, and the top of montant 64 connects hand-held pole 66; By the gap between gas storage plate upper and lower side and fermentation chamber chamber interior walls, be free to extract or put into pull bar, manually pull pull bar 60, drive cross bar 62 motion in fermentation chamber 16, promote being uniformly distributed of fermentation raw material and bacterial classification, and can dredging pipeline.

Gas storage plate 50 is fixed in fermentation chamber 16 by bracing or strutting arrangement, has 10cm at least between the lower-most point of the bottom of gas storage plate 50 and the bottom surface of fermentation chamber 16, ensures that fermentation raw material is at fermentation chamber indoor moveable, and prevents from blocking.

Second fermentation vat 20, the 3rd fermentation vat 30 are identical with the structure of the first fermentation vat 10, repeat no more herein.

The present invention also comprises the first aqueduct 70 and the second aqueduct 80, the discharge port water shoot of the first sub-fermentation vat of aqueduct 70 UNICOM, second aqueduct 80 has two and the two ends of difference UNICOM first aqueduct 70, the other end of the second aqueduct 80 connects water pressure house 40 respectively, the second aqueduct 80 is provided with the check valve of the unidirectional inflow water pressure house 40 of natural pond liquid in control first aqueduct 70; Water pressure house 40 at least connects the opening for feed water shoot of a fermentation vat body, and opening for feed water shoot is provided with the check valve of the natural pond liquid unidirectional inflow fermentation chamber room controlled in water pressure house; Particularly importantly, the horizontal plane at the second aqueduct 80 lower-most point place is higher than the horizontal plane at the first aqueduct 70 vertex place, and the first aqueduct 70 lower-most point and discharge port water shoot lower-most point are positioned on same horizontal plane.

Fermentation raw material is poured in the opening for feed of sub-fermentation vat, by pulling pull bar 60, promote being uniformly distributed of fermentation raw material, fermentation raw material produces biogas in the indoor fermentation of fermentation chamber and accumulates in gas storage plate, the fermentation vat liquid level lift velocity that fermentation efficiency is high is very fast, and by the first aqueduct 70, is entered by natural pond liquid in the relatively slow fermentation vat of fermentation efficiency, keep the natural pond liquid liquid level in sub-fermentation vat consistent, and the natural pond liquid being rich in bacterial classification is brought in the slow fermentation vat of fermentation efficiency; When natural pond liquid liquid level in sub-fermentation vat reaches the lower-most point of the second aqueduct 80, the natural pond liquid in sub-fermentation vat will by the unidirectional inflow water pressure house 40 of the second aqueduct 80; When use externally exports biogas by the airway at gas storage plate top, the biogas store content in sub-fermentation vat declines, and the natural pond liquid stored in water pressure house 40 will be back in fermentation chamber by opening for feed water shoot is unidirectional, completes natural pond liquid recycle stream and moves.

When fermentation is blocked in group fermentation vat, by pulling pull bar 60, carry out dredging pipeline.

Natural pond liquid near the opening for feed of sub-fermentation vat contains more impurity, and not only foreign matter content is few for the natural pond liquid near discharge port, and wherein also has more bacterial classification; By circulating of natural pond liquid, being uniformly distributed of effective promotion bacterial classification, improves the fermentation efficiency of system.

Above-mentioned water pressure house 40 can adopt the structure of top seal, prevents introduced contaminants from falling into, and water pressure house 40 top is provided with vapor pipe 42, ensures that the air pressure in water pressure house is consistent with ambient pressure.

For promoting that the self-circulation of natural pond liquid is flowed further, the convection agitation of natural pond liquid is realized by biogas air pressure, two the first baffle plates 54 between opening for feed gas block panel 52 and discharge port gas block panel 53 and second baffle 55 is also provided with in gas storage plate 50 of the present invention, the first fermentation zone is formed between opening for feed gas block panel 52 and the first baffle plate 54, the second fermentation zone is formed between first baffle plate 54 and second baffle 55, the 3rd fermentation zone is formed between second baffle 55 and discharge port gas block panel 53, first fermentation zone, second fermentation zone and the 3rd top, fermentation zone are respectively arranged with the airway of independently Hu Bu UNICOM.

Because the skewness of fermentation raw material, bacterial classification and other factors cause the fermentation efficiency of each fermentation zone different, thus impel the natural pond liquid convection current between adjacent fermentation zone, thus promote being uniformly distributed of bacterial classification.

For making full use of the biogas storage space in gas storage plate, the length of entry/exit material mouth gas block panel in the vertical direction projection should be greater than the length of the first baffle plate 54 and the projection of second baffle 55 in the vertical direction.

Suppose, the fermentation efficiency of the second fermentation zone is higher than the first fermentation zone and the 3rd fermentation zone, in gas storage board memory storage process of methane, extrude the mutual convection agitation of natural pond liquid phase in each fermentation zone, when first the second fermentation zone collects full biogas, continue the biogas that fermentation produces to be flowed in the first fermentation zone and the 3rd fermentation zone by the first baffle plate and second baffle, until natural pond liquid liquid level in gas storage plate is lower than the bottom of the first baffle plate and second baffle, thus realize the intercommunication of three fermentation zones; When storing full biogas in gas storage plate, the sidewall by gas storage plate flows out by the biogas continuing fermentation generation.

Natural pond of the prior art liquid is fished for and is mainly adopted obtain manner manually, part adopts water pump to extract, more particle is had owing to mixing in the liquid of natural pond, adopt common water pump can not adapt to this severe Working environment, cause the obstruction of water pump, pneumatic diaphragm pump of the prior art, employing pressurized air is propulsion source, for various corrosive liquid, with the liquid of particle, high viscosity, volatile, inflammable, hypertoxic liquid, all can be taken out light and be exhausted, so pneumatic diaphragm pump adapts to the extraction to natural pond liquid.

The biogas that methane-generating pit produces during the fermentation is collected in gas storage plate, and along with the progressively increase of biogas air pressure, is flowed into outside gas storage plate by the natural pond liquid in extruding gas storage plate, and make the natural pond liquid liquid level in methane-generating pit constantly increase; Utilize gas storage board memory biogas as driving the power of pneumatic diaphragm pump, drive the work of pneumatic diaphragm pump, thus extract natural pond liquid; The work of traditional pneumatic diaphragm pump is the driving being driven compressor by electric power, and the present invention, by the driving of biogas air pressure, can realize the comprehensive utilization of eco-friendly power source.

Particularly, pneumatic diaphragm pump is positioned in water pressure house 50, filtering net can be socketed with outside pneumatic diaphragm pump, prevent larger particle from flowing in pneumatic diaphragm pump, the inlet end of pneumatic diaphragm pump connects the airway of gas storage plate by tracheae, above-mentioned tracheae is provided with the valve body controlling tracheae and open or close; When gas storage board memory contains a large amount of biogas, open the valve body on tracheae, the biogas in gas storage plate flows in pneumatic diaphragm pump, and drives the work of pneumatic diaphragm pump, discharged outside water pressure house by the natural pond liquid in pneumatic diaphragm pump extruding water pressure house, thus reach the object automatically extracting natural pond liquid.

As Fig. 6-13, the invention provides a kind of embodiment of pneumatic diaphragm pump, it utilizes air pressure to become the to-and-fro movement of left piston 210 and right piston 220 for power conversion, drives shrinkage strain or the crimp of left diaphragm 670 and right diaphragm 680, thus reaches the function getting rid of liquid; It can discharge the liquid of band particle efficiently, high viscosity, volatile, inflammable, hypertoxic liquid.

As shown in Figure 6, pneumatic pump, comprises the pump housing, is provided with centrosome in the pump housing, centrosome inner sleeve dress controlling valve 100, and the two ends, left and right of controlling valve 100 connect left piston 210 and right piston 220 respectively; Left piston 210 outer side wall and centrosome outer side wall and be installed on the left of centrosome between left diaphragm 670 to be formed seal and the left air chamber 630 of constant voltage, form left fluid chamber 610 between left diaphragm 630 and pump housing inwall; Right piston 220 outer side wall and centrosome outer side wall and be installed on the right side of centrosome between right diaphragm 680 to be formed seal and the right air chamber 650 of constant voltage, form right fluid chamber 620 between right diaphragm 650 and pump housing inwall; Form left venting cavity 640 between left piston 210 inner side-wall and centrosome inwall, between right piston 220 inner side-wall and centrosome inwall, form right venting cavity 660; The inlet triplet for water 410 be all communicated with right fluid chamber 620 with left fluid chamber 610 is provided with bottom the pump housing, pump housing top is provided with the outlet three way 420 be all communicated with left fluid chamber and right fluid chamber, also be provided with dash ball 430 in the pump housing, dash ball 430 is arranged at inlet triplet for water 410 and left and right fluid chamber link position place respectively and is arranged at outlet three way 420 and left and right fluid chamber link position place; Its principle is: drive left piston 210 and right piston 220 to-and-fro movement in the pump housing by the driving of controlling valve 100, drive the distortion of left diaphragm 670 and right diaphragm 680, and drive unlatching or the closedown of dash ball, thus the liquid in compressed liquid chamber, thus reach the object of absorption or expel liquid.

Controlling valve 100, it comprises valve core housing 500 and permanent sleeve, permanent sleeve is made up of upper permanent sleeve 510 and lower permanent sleeve 520, permanent sleeve is socketed on valve core housing 500 central position, upper permanent sleeve 510 and lower permanent sleeve 520 integrated shaping, sidewall between upper permanent sleeve 510 and lower permanent sleeve 520 is provided with the 3rd ventilating pit 310 and the 4th ventilating pit 320 of permanent sleeve 510 inner chamber and lower permanent sleeve 520 inner chamber in UNICOM on two ends, left and right, and controlling valve about 100 two ends are socketed with the second left end spool 180 and the second right-hand member spool 190 respectively.

In upper permanent sleeve 510, slip cap is connected to regulation and control axle 140, regulation and control axle 140 left end is provided with annular left lug boss 142, regulation and control axle 140 right-hand member is provided with annular right lug boss 144, be annular recesses between the left lug boss 142 of annular and the right lug boss 144 of annular, annular inlet chamber room is formed between upper permanent sleeve 510 inwall and this annular recesses, upper permanent sleeve about 510 two ends are socketed with the first left end spool 150 and the first right-hand member spool 160 respectively, first left end spool 150 outer side wall, left bank air cavity 154 is formed between second left end spool 180 inner side-wall and valve core housing 500 inner side-wall, first left end spool 150 is provided with the first breather hole 152 of UNICOM's left bank air cavity 154 and upper permanent sleeve 510 inner chamber, in like manner, the second breather hole 162 right discharge chamber 164, first right-hand member spool 160 being provided with the right discharge chamber of UNICOM 164 and upper permanent sleeve 510 inner chamber is formed between the first right-hand member spool 160, second right-hand member spool 190 inner side-wall and valve core housing 500 inner side-wall.

In lower permanent sleeve 520, slip cap is connected to center valve core 170, the left end outer side wall of center spool 170 is provided with annular left air cavity 175, the left end of center spool 170 is provided with step chamber, the inner face of the second left end spool 180 is provided with secondary ring-shaped step, the first step ring-shaped step of the second left end spool 180 to insert in step chamber corresponding to center spool left end and with the left chamber 176 of its formation annular, the second stage ring-shaped step of the second left end spool 180 and center spool left end form annular recesses and this annular recesses and left bank air cavity are connected, left air cavity 175 is provided with the 5th breather hole 171 be connected with left chamber 176, the drive end that one runs through the left coupling shaft 172 of the second left end spool 180 is connected in center spool 170 left end step chamber, the output terminal of left coupling shaft 172 connects left piston 210, in like manner, the right-hand member outer side wall of center spool 170 is provided with annular right air cavity 177, the right-hand member of center spool 170 is provided with step chamber, the inner face of the second right-hand member spool 190 is provided with secondary ring-shaped step, the first step ring-shaped step of the second right-hand member spool 190 to insert in step chamber corresponding to center spool 170 right-hand member and with the right chamber 178 of its formation annular, the second stage ring-shaped step of the second right-hand member spool 190 and center spool 170 right-hand member form annular recesses and this annular recesses and right discharge chamber 164 are connected, right air cavity 177 is provided with the 6th breather hole 173 be connected with right chamber 178, the drive end that one runs through the right coupling shaft 174 of the second right-hand member spool 190 is connected in center spool 170 right-hand member step chamber, the output terminal of right coupling shaft 174 connects right piston 220.

The left air cavity 175 of permanent sleeve 510 inner chamber and center spool 170 in above-mentioned 3rd breather hole 310 UNICOM, the right air cavity 177 of permanent sleeve 510 inner chamber and center spool 170 in above-mentioned 4th breather hole 320 UNICOM.

The annular outer wall of valve core housing is provided with three road annular recessess, comprise central recess 110, left bank air drain 120 and right air discharge duct 130, the bottom of annular center groove 110 is provided with the air inlet port 112 that some and upper permanent sleeve inner chamber is connected, the bottom of left bank air drain 120 is provided with some left bank pores 122 be connected with left bank air cavity 154, and the bottom of right air discharge duct 130 is provided with the right venting hole 132 that some and right discharge chamber 164 is connected.

Particularly importantly, high order end and the high order end distance of the right lug boss 144 of regulation and control axle 140 of the left lug boss 142 of regulation and control axle 140 should equal the width between centers of the 3rd breather hole 310 and the 4th breather hole 320, in like manner, the low order end distance regulating and controlling the low order end of the left lug boss 142 of axle 140 and the right lug boss 144 of regulation and control axle 140 should equal the width between centers of the 3rd breather hole 310 and the 4th breather hole 320.

When regulating and controlling axle 140 and moving to the left, annular inlet chamber is connected with left air cavity 175 by the 3rd breather hole 310, and left air cavity 175 is connected with left chamber 176 by the 5th breather hole 171; Meanwhile, right discharge chamber 164 is by the right-hand member inner chamber UNICOM of the second breather hole 162 with upper permanent sleeve 510, the right-hand member inner chamber of upper permanent sleeve 510 is by the 4th breather hole 320 and right air cavity 177 UNICOM, and right air cavity 177 is connected with right chamber 178 by the 6th breather hole 173.

In like manner, when regulating and controlling axle 140 and moving to the right, annular inlet chamber is connected with right air cavity 177 by the 4th breather hole 320, and right air cavity 177 is connected with right chamber 178 by the 6th breather hole 173; Meanwhile, left bank air cavity 154 is connected with the left end inner chamber of upper permanent sleeve 510 by the first breather hole 152, the left end inner chamber of upper permanent sleeve 510 is connected with left chamber 175 by the 3rd breather hole 310, and left chamber 175 is connected with left chamber 176 by the 5th breather hole 171.

As shown in figure 14, for the obstruction preventing center spool 170 from causing the 5th breather hole 171 and the 6th breather hole 173 in bilateral reciprocation process, 5th breather hole 171 and the 6th breather hole 173 adopt L-type breather hole, the right side wall in the spool 170 left end step chamber, connection center, bottom of the 5th breather hole 171, the left side wall in the spool 170 right-hand member step chamber, connection center, bottom of the 6th breather hole 173.

Air supply channel is provided with in the pump housing of pneumatic pump, this air supply channel leads to central recess 110, also be provided with in the pump housing and lead to extraneous exhaust-duct, left bank air drain 120 and right air discharge duct 130 are led in the inner of this exhaust-duct, left venting cavity 640 and right venting cavity 660 are also led in the inner of exhaust-duct, and left venting cavity 640 keeps air pressure inside consistent with external atmosphere pressure with right venting cavity 660 in extension or compression process.

As shown in Figure 9, when source of the gas enters inlet chamber indoor, regulation and control axle 140 is to the ultimate range of left end movement.

Be the principle of work of embodiment, elaboration detailed further pneumatic diaphragm pump of the present invention below with biogas, origin herein can also replace to other sources of the gas, such as pressurized air, nitrogen etc. certainly.

The original state of controlling valve is: center spool is in the central position of lower permanent sleeve, and controlling valve is in the central position of permanent sleeve, and the left lug boss regulating and controlling axle blocks the 3rd breather hole, and the right lug boss of regulation and control axle blocks the 4th breather hole.

Because air supply channel one end connects the airway of methane-generating pit gas storage plate, the other end of air supply channel is connected in the central recess in the pump housing, the biogas stored in methane-generating pit enters in central recess by air supply channel, and entering air inlet chamber by the some air inlet ports be arranged at bottom central recess, this air inlet chamber is made up of the annular recesses regulated and controled between the lug boss of axle two ends and upper permanent sleeve inner chamber; Meanwhile, regulation and control axle can not be in the state of force balance completely, moves so biogas promotes the axial side of regulation and control.

When mobile on the left of biogas promotes regulation and control axially, regulation and control axle left end inner chamber is by being arranged at the left bank air cavity UNICOM of the first breather hole on the first left end spool of upper permanent sleeve left end and the first left end spool left end, because left bank air cavity upper end is by left bank pore and left bank air drain UNICOM, and due to the exhaust-duct UNICOM in left bank air drain and the pump housing, regulation and control axle left end inner chamber is communicated with ambient atmosphere, when regulation and control axially move left, discharges the air in regulation and control axle left end inner chamber, regulate and control axial left end when moving, air inlet chamber and the 3rd breather hole UNICOM be arranged between permanent sleeve and lower permanent sleeve, regulation and control axle right-hand member inner chamber is by the right discharge chamber UNICOM of the second breather hole and the first right-hand member spool right-hand member that are arranged at the first right-hand member spool of upper permanent sleeve right-hand member, because right discharge chamber upper end is by right venting hole and right air discharge duct UNICOM, and due to the exhaust-duct UNICOM of right air discharge duct and the pump housing, regulation and control axle right-hand member inner chamber is communicated with ambient atmosphere, when regulation and control axially move left, volume of air in regulation and control axle right-hand member inner chamber increases, regulation and control axle right-hand member inner chamber and the 4th breather hole UNICOM be arranged between permanent sleeve and lower permanent sleeve, meanwhile, the annular left air cavity UNICOM of center spool outer side wall left end of air inlet chamber by being slidably connected in the 3rd breather hole and lower permanent sleeve, biogas enters in left air cavity, owing to passing through the 5th breather hole UNICOM between left air cavity and spool left end step chamber, center, and the second left end spool of center spool left end to insert in spool left end step chamber, center and forms left chamber, makes biogas enter in left air cavity, meanwhile, right air cavity due to center spool outer side wall right-hand member passes through the right-hand member step chamber UNICOM of the 6th breather hole and center spool, and the second right-hand member spool due to center spool right-hand member inserts in spool right-hand member step chamber, center and forms right chamber, right air cavity and right chamber are connected, and because right air cavity is by the 4th breather hole and regulation and control axle right-hand member inner chamber UNICOM, right air cavity and exhaust-duct are connected.

Biogas enters in left chamber, left chamber's internal gas pressure is made to be greater than right chamber, center spool moves right, meanwhile, regulation and control axle continues to be moved to the left, center spool moves right and drives the movement of left coupling shaft and the right coupling shaft be attached thereto in process, left coupling shaft moves right in process, drive left piston moves to right, sealed chamber's air pressure between left piston and left diaphragm is reduced, left diaphragm shrinkage strain, left fluid chamber volume between left diaphragm and the pump housing is increased, and make left piston inner side-wall and the left venting cavity volume be arranged between the centrosome in the pump housing reduces, because left venting cavity and exhaust-duct are connected, the volume of air reduced in left venting cavity all can be discharged by exhaust-duct, reach the object absorbing natural pond liquid on the left of the pump housing, in like manner, moving to right of right piston, right diaphragm upholds distortion, and right fluid chamber volume between right diaphragm and the pump housing is reduced, and the right venting cavity volume between right piston inner side-wall and the centrosome being arranged in the pump housing increases, and reaches the object of discharging natural pond liquid on the right side of the pump housing.

Regulation and control axially move left in process, and the left end of regulation and control axle stretches out right-hand member and shrinks, and the left end of regulation and control axle meets with the left piston moved right, and along with biogas is constantly to left chamber's conveying, left piston drives regulation and control axle to move right together; When in right chamber, gas is fully drained, left piston drives axial the moving right to regulation and control axle left end is protruding of regulation and control block the 3rd breather hole and regulate and control axle right-hand member projection obstruction the 4th breather hole position.

Due to the obstruction of the 3rd breather hole and the 4th breather hole, and regulate and control axle left end and left piston is fitted, and the biogas air pressure due to inlet chamber indoor is greater than regulation and control axle right-hand member air pressure, make axle to move right under the effect of biogas air pressure and inertia, regulation and control axially move right in process, and regulation and control axle left end shrinks and right-hand member stretches out.

Regulation and control axially move right in process, air inlet chamber and the 4th breather hole are connected, and upper permanent sleeve left end inner chamber and the 3rd breather hole are connected, biogas enters right chamber, air pressure in right chamber is increased, thus the center spool of making is moved to the left, and the biogas in extruding center left chamber is by the 5th breather hole, 3rd breather hole, first breather hole and left bank pore are discharged, center spool is moved to the left in process, drive the movement of left coupling shaft and right coupling shaft, and drive the movement of left piston and right piston, make the shrinkage strain of stretching out distortion and right diaphragm of left diaphragm, left fluid chamber volume is reduced, left venting cavity volume increases, reach on the left of the pump housing and discharge natural pond liquid object, meanwhile, right fluid chamber volume increases, right venting cavity volume reduces, reach on the right side of the pump housing and absorb natural pond liquid object.

Right piston is moved to the left in process and meets with regulation and control axle right-hand member, and drives regulation and control axially to move left, when the biogas in left chamber is discharged completely, and left protruding end sealing the 3rd breather hole of regulation and control axle, regulation and control axle right-hand member sealing the 4th breather hole.

In like manner, due to the obstruction of the 3rd breather hole and the 4th breather hole, and regulate and control axle right-hand member and right piston is fitted, and the biogas air pressure due to inlet chamber indoor is greater than regulation and control axle left end air pressure, make axle to be moved to the left under the effect of biogas air pressure and inertia, regulation and control axially move left in process, and regulation and control axle left end stretches out and right-hand member shrinks.

Motion and so forth, realizes the left and right reciprocally swinging of center spool, and realizes the flexible of left and right piston, thus reaches the object of pump housing extraction or absorption natural pond liquid.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, the General Principle defined in the present invention when not departing from spirit of the present invention or scope, can realize in other embodiments.Therefore, the present invention can not be defined to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (2)

1. the method for parallel methane-generating pit Automatic Extraction natural pond liquid, its step comprises: fermentation raw material is poured in the opening for feed of fermentation vat, fermentation vat is made up of the sub-fermentation vat of several same sizes and homonymy is placed, fermentation raw material produces biogas in the indoor fermentation of the fermentation chamber of sub-fermentation vat and accumulates in the gas storage plate on fermentation chamber top, the biogas natural pond liquid extruded in accumulation process in gas storage plate flows out and makes the natural pond liquid liquid level in sub-fermentation vat increase, natural pond liquid enters in the sub-fermentation vat on fermentation efficiency ground by the first aqueduct connecting the discharge port water shoot of some sub-fermentation vats by the sub-fermentation vat that fermentation efficiency is high, when natural pond liquid liquid level in group fermentation vat reaches the lower-most point of the second aqueduct of UNICOM first aqueduct, natural pond liquid in fermentation vat will by the unidirectional inflow water pressure house of the second aqueduct, along with the store content of biogas increases, the amount that the natural pond liquid in fermentation vat flows into water pressure house is larger,

By the airway at gas storage plate top to when being positioned over that in water pressure house, pneumatic diaphragm pump exports biogas, biogas air pressure in gas storage plate reduces, the natural pond liquid stored in water pressure house by the unidirectional inflow fermentation vat of opening for feed water shoot, thus will complete circulating of natural pond liquid; Meanwhile, the natural pond liquid stored in water pressure house, is discharged for power with biogas air pressure by pneumatic diaphragm pump.

2. the method for parallel methane-generating pit Automatic Extraction natural pond according to claim 1 liquid, above-mentioned fermentation raw material can be excrement of animals, stalk etc.