CN200940144Y

CN200940144Y - Methane tank with inner circulation so breaking its hard cover and preventing raw material from being floated

Info

Publication number: CN200940144Y
Application number: CNU200620098556XU
Authority: CN
Inventors: 莫少坚; 冯志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-16
Filing date: 2006-08-16
Publication date: 2007-08-29
Anticipated expiration: 2016-08-16

Abstract

A float-proof circumfluence crust-breaking methane pool comprises a ferment pool, a gas storage chamber, a residue discharge pool and a hydraulic pressure pool, which are all included in a cylindrical container with movable cover. A material blocking mesh is positioned under the wall of the middle / upper part of the ferment pool; and 3-20 tension ropes are connected with the lower part of the mesh; the other side of the tension ropes is evenly distributed and fixed on the wall of the ferment pool under the material blocking mesh; the hydraulic pressure pool is provided with two circulation pipes communicated with the ferment pool below the hydraulic pressure pool; the circulation backflow pipe close to the charge pipe extending to the upper-tier methane liquid in the ferment pool and being provided with a one-way valve at the lower port while the circulation hydraulic pressure pipe close to the discharge pipe extending to the middle-tier methane liquid in the ferment pool and being provided with a one-way valve at the upper port that is communicated with the hydraulic pressure pool; the charge pipe, which is located at one of corners of the ferment pool and goes vertically from top of methane pool to the central part of ferment pool, is positioned at the lower part with a slant plate trough, one side of which can reach near the central area on the bottom of the ferment pool. The methane pool has the functions of excellent float prevention and circumfluence crust-breaking and the features of simple structure and convenient installation.

Description

Anti-buoyant circulation broken shell methane-generating pit

Technical field:

The utility model relates to a kind of device of producing biogas, particularly a kind of methane-generating pit with anti-buoyant and shell breaking function.

Background technology:

At present, the ubiquitous problem of methane-generating pit that China completes for use in vast rural area be methane-generating pit during the fermentation, on fermentation materials is bubbled through the water column easily, top layer and the partial material that exceeds water level, owing to can not get the immersion of natural pond liquid for a long time, can not fully ferment and, just formed one deck duricrust by bacterial degradation, this phenomenon is crust, and it can influence the normal gas producing of methane-generating pit or stop aerogenesis.

For solving the crust problem, 02236306.8 patent disclosure a kind of automated cycle, the methane-generating pit of anti-caking cylinder, on the opening for feed of fermentation vat, be provided with an anti-caking cylinder net, and be provided with one connect slag tap between and the automatic thrust-augmenting nozzle on feed-pipe top, natural pond water refluxes automatically by automatic thrust-augmenting nozzle and produces circulation, it is tied cylinder and promotes natural pond water to reflux automatically preventing, and the fermentation once more that participates in natural pond water by fermentation material is decomposed, destroying the methane-generating pit crust forms, the gas production rate that improves methane-generating pit has played certain effect, but also comes with some shortcomings, and the one: when the raw material of producing biogas is as straw, during straw class material, in fermentation vat, bigger to buoyancy, anti-caking cylinder net is produced an arc buoyancy that makes progress, anti-caking cylinder net becomes arc, this arc even exceed natural pond, upper strata liquid level, make straw, straw class material accumulates in the arc place, do not soaked by natural pond liquid, the cylinder of decomposing and fermenting, and anti-caking as early as possible net is in strained condition for a long time, damage loss of function easily.Secondly, the automatic thrust-augmenting nozzle between natural pond water is slagged tap by connection and feed-pipe top produces round-robin structure more complicated, its effect ideal not enough.Thereby its broken shell effect is desirable not enough.

The utility model content:

The technical problems to be solved in the utility model is: a kind of anti-buoyant circulation broken shell methane-generating pit with anti-preferably buoyant and circulation broken shell effect is provided, to solve the distortion of anti-caking cylinder Netease or the damage of above-mentioned methane-generating pit, make straw, straw class fermentation buoyant assemble not by natural pond liquid soak, decomposing and fermenting as early as possible, and thrust-augmenting nozzle produces round-robin structure more complicated, its broken shell effect ideal problem not enough automatically, simultaneously, feeding unit to methane-generating pit further improves, and is more conducive to material fermentation in fermentation vat, decomposition, aerogenesis.

The technical scheme that solves its above-mentioned technical problem is: a kind of anti-buoyant circulation broken shell methane-generating pit, the fermentation vat and the gas dome that comprise band feed-pipe and escape pipe, be with the slag bath that of discharge nozzle, the hydraulic pressure pond, described fermentation vat and go out slag bath, the hydraulic pressure pond is communicated with respectively and is positioned at one simultaneously and has the cylindrical container of removable cover and separated by dividing plate, this cylindrical container bottom is a fermentation vat, the middle part is a gas dome, top is slag bath and hydraulic pressure pond, feed-pipe is through fermentation vat middle part from the methane-generating pit top, discharge nozzle top is fixed on out on the dividing plate of slag bath bottom, the fermentation vat bottom is stretched in the lower end, be fixed with material interception net on the pool wall below natural pond, the middle and upper part liquid level of described fermentation vat, tackle side off the net at material and be connected with 3～20 pulling force ropes, this pulling force rope one end is fixedly linked with material interception net evenly distributedly, and the other end is fixed on material evenly distributedly and tackles on the side's off the net pool wall.

The further improvement of the utility model scheme is: be provided with two circulation tubes that are connected with the bottom fermentation vat in the described hydraulic pressure pond, wherein, one near feed-pipe is the pump around circuit pipe, this pump around circuit pipe stretches into fermentation vat upper strata marsh liquid region, its lower end port is provided with the Movable valve of a unidirectional unlatching, one near discharge nozzle is the recirculated water pressure pipe, and this recirculated water pressure pipe stretches into fermentation vat middle level marsh liquid region, and an end that is communicated with the hydraulic pressure pond has the Movable valve of a unidirectional unlatching.

Further improvement project of the present utility model is: feed-pipe vertically is positioned at a jiao of methane-generating pit fermentation vat, the vertically through fermentation vat middle part from the methane-generating pit top, one swash plate hopper is arranged at the feed-pipe bottom, and this swash plate hopper one end is fixed on the pool wall of fermentation vat, the other end is fixedly connected near the fermentation vat bottom centre district.

Owing to adopt said structure, the anti-buoyant circulation broken shell methane-generating pit of the utility model is compared with existing methane pool and above-mentioned 02236306.8 patent, has following beneficial effect:

1, anti-buoyant is effective: material is tackled equally distributed 3～20 pulling force ropes of side off the net material interception net is applied some downward pulling force equably, make it always to be in horizontality, stop material come-up preferably with buoyancy, making straw, straw class ferment buoyant can be all the time by the immersion of natural pond liquid, accelerate decomposition, fermentation gas, thereby prevent incrustive formation, simultaneously, because material interception net stress equalization, be not easy to damage, can keep it to prevent the function of straw, straw class fermentation buoyant come-up preferably.

2, the natural pond liquid in the fermentation vat can be repetitious inside and outside circulation utilization up and down, and the fermentation once more of the material that participates in swimming fermenting decomposes, it is more abundant that fermentation is decomposed, thereby can prevent incrustive formation effectively, improves the gas production rate of methane-generating pit greatly:

Be provided with two circulation tubes that are connected with the bottom fermentation vat in the hydraulic pressure pond on the anti-buoyant circulation broken shell methane-generating pit top of the utility model, wherein, one near feed-pipe is the pump around circuit pipe, this pump around circuit pipe stretches into fermentation vat upper strata marsh liquid region, its lower end port is provided with the Movable valve of a unidirectional unlatching, one near discharge nozzle is the recirculated water pressure pipe, this recirculated water pressure pipe stretches into fermentation vat middle level marsh liquid region, one end in this recirculated water pressure pipe connection hydraulic pressure pond has the Movable valve of a unidirectional unlatching, when without gas, the Movable valve of pump around circuit pipe lower end can be closed automatically, and natural pond liquid can enter into the hydraulic pressure pond along the cyclic hydrostatic pressure pipe along with the rising of air pressure; When using gas, fermentation vat air pressure lowers, the Movable valve of the unidirectional unlatching of the recirculated water pressure pipe of close discharge nozzle can be closed automatically, be back to the natural pond liquid layer that blocks in the fermentation vat on the material and wash check valve open near the natural pond liquid in the hydraulic pressure pond of feed-pipe along the pump around circuit pipe, natural pond liquid so carries out circulating fermentation repeatedly repeatedly, and the decomposition of fermentation once more of the material that participates in swimming fermenting, the fermentation material fermentation of swimming is decomposed fully, and do not crust again, both increased the aerogenesis effect, reach the purpose of broken shell again by circulation.

3, safety performance is good: be provided with two circulation tubes that are connected with the bottom fermentation vat in the hydraulic pressure pond on the top of the anti-buoyant circulation broken shell methane-generating pit of the utility model as mentioned above, when the air pressure in the gas dome reaches the design maximum safety coefficient, biogas can be by pump around circuit pipe automatic vent, thereby reaches the effective effect that prevents the body blast of methane-generating pit pond.

4, the centre portions that can make material enter fermentation vat as early as possible soak, accelerate decomposition, fermentation gas, and can prevent that material is gathered in and cause the charging latch up phenomenon under the feed-pipe.There is a swash plate hopper below of the anti-buoyant circulation broken shell methane-generating pit feed-pipe of the utility model, this swash plate hopper one end is fixed on the pool wall of fermentation vat, the other end is fixedly connected near the fermentation vat bottom centre district, after virgin material added, the centre portions that can enter fermentation vat as early as possible soaked, accelerate decomposition, fermentation gas.

5, add the biogas raw material conveniently: the mouth of pipe of the anti-buoyant circulation broken shell methane-generating pit feed-pipe of the utility model has the feed-pipe removable cover, its top is provided with 1～3 feeding-passage mouth, each porthole is equipped with a Movable valve, blowdown ditch behind the house before can one logical lavatory, two logical pig cattle pens, three connecting houses, and can open or close certain passage according to the needs in the methane-generating pit, straw, straw class material can be opened the adding of feed-pipe removable cover or shred the back from feeding-passage mouth input.

6, whole firmly, the long service life of methane-generating pit, resistance to air loss is good, good environmental protection: shell, each parts of the anti-buoyant circulation broken shell methane-generating pit of the utility model all use the PVC plastics to make respectively, assembled formation, and afterburning structure is arranged in the force part, thus whole firmly, long service life; This external fermentation vat, go out on slag bath, the hydraulic pressure pond removable cover is arranged respectively, except that can avoid fermentation vat, go out slag bath, the natural pond water in hydraulic pressure pond or biogas stink distribute, seeds of flowering plants grass can also be planted in the place beyond removable cover, beautifies the environment good environmental protection.

7, processing and fabricating is convenient, cost performance is high: anti-each parts of buoyant circulation broken shell methane-generating pit of the utility model all use the PVC plastics to make the back assembled formation respectively, be convenient to suitability for industrialized production, easy to make, cost is low, can use after each member is transported to building site assembling, technical requirements to the assembler is not high, and the outlying mountain area that is highly suitable for technical force, shortage of funding uses.

Below, the technical characterictic of preventing buoyant circulation broken shell methane-generating pit to the utility model is further described in conjunction with the accompanying drawings and embodiments.

Description of drawings:

The anti-buoyant circulation broken shell biomass pool structure synoptic diagram of Fig. 1～Fig. 2: the utility model embodiment one:

Fig. 1: the main P-P sectional view of looking sectional view, Fig. 2: Fig. 1;

The anti-buoyant circulation broken shell biomass pool structure synoptic diagram of Fig. 3～Fig. 4: the utility model embodiment two:

Fig. 3: the main sectional view, Fig. 4 looked: vertical view;

Fig. 5: the diaphragm structure synoptic diagram (upward view) of the anti-buoyant circulation broken shell methane-generating pit of band stiffening web;

Fig. 6: the pond bottom structure synoptic diagram (vertical view) of the anti-buoyant circulation broken shell methane-generating pit of band stiffening web;

Fig. 7: the recirculated water pressure pipe is put two of method among the utility model hydraulic pressure pond D;

Fig. 8: the recirculated water pressure pipe is put three of method among the utility model hydraulic pressure pond D;

The anti-buoyant circulation broken shell biomass pool structure synoptic diagram of Fig. 9: the utility model embodiment three (the main sectional view of looking).

Among the figure:

District, A3-middle level marsh liquid region, A4-lower floor material district are swum to expect in A-fermentation vat, A1-upper strata marsh liquid region, A2-middle level, the B-gas dome, and C-goes out slag bath, D-hydraulic pressure pond, D1-hydraulic pressure pond I, D2-hydraulic pressure pond II, vacant of E, E1, E2-;

The 1-feed-pipe, 2-escape pipe, 3-feed-pipe removable cover, 4-pump around circuit pipe, 5-hydraulic pressure pond removable cover, 6-stiffening web, 7-dividing plate, 7 ₁-dividing plate with a slope, 7 ₂-round shape dividing plate, 8-supports the round shape dividing plate of enclosing cover removable cover, 9-fermentation vat skylight, the columnar removable cover of 10-, the resistance to air loss removable cover of 11-fermentation vat and gas dome, 12-standing bolt, 13-resistance to air loss cushion rubber, the 14-dividing plate, the Movable valve of the unidirectional unlatching of the 15-cyclic hydrostatic pressure mouth of pipe, 16-goes out the slag bath removable cover, 17-recirculated water pressure pipe, the 18-discharge nozzle, 19-nylon pulling force rope, 20-material interception net, 21-swash plate hopper, the Movable valve of the unidirectional unlatching of the 22-pump around circuit pipe mouth of pipe, 23-feeding-passage mouth, 24-stay cord permanent sleeve.

Embodiment:

Embodiment one:

A kind of anti-buoyant circulation broken shell methane-generating pit.A cylindrical container quilt that has removable cover that is made of plastics is by columnar dividing plate 7 ₂And be attached thereto dividing plate 7 with a slope ₁The dividing plate 7 that constitutes is separated into two portions, the round shape dividing plate 7 of encloses container dividing plate ₂With interior and with a slope dividing plate 7 ₁With the lower section is fermentation vat A and gas dome B, encloses container dividing plate 7 dividing plates 7 with a slope ₁More than, columnar dividing plate 7 ₂Partly be separated into vacant E and go out slag bath C and hydraulic pressure pond D in addition, fermentation vat A with go out slag bath C, hydraulic pressure pond D is communicated with respectively, feed-pipe 1 is through fermentation vat A middle part from the methane-generating pit top, discharge nozzle 18 tops are fixed on out the dividing plate 7 bottom the slag bath ₁On, fermentation vat A bottom is stretched in the lower end, be fixed with material interception net 20 on the pool wall below natural pond, the middle and upper part liquid level of fermentation vat A, below material interception net 20, be connected with 3～20 nylon pulling force ropes 19, these pulling force rope 19 1 ends are fixedly linked with material interception net 20 evenly distributedly, the other end is fixed on the fermentation vat pool wall of material interception net 20 belows evenly distributedly by stay cord permanent sleeve 24, and described pulling force rope 19 also can adopt other corrosion resistant ropes.

Embodiment two:

A kind of anti-buoyant circulation broken shell plastic methane tank.Its basic structure is with embodiment one, institute's difference is: be provided with two circulation tubes that are connected with bottom fermentation vat A in the hydraulic pressure pond D on described circulation broken shell methane-generating pit top, wherein, one near feed-pipe 1 is pump around circuit pipe 4, pump around circuit pipe 4 stretches into fermentation vat upper strata marsh liquid region A1, its lower end port is provided with the Movable valve 22 of a unidirectional unlatching, one near discharge nozzle 18 is recirculated water pressure pipe 17, this recirculated water pressure pipe stretches into fermentation vat middle level marsh liquid region A3, and an end that is communicated with hydraulic pressure pond D has the Movable valve 15 of a unidirectional unlatching (referring to Fig. 3, Fig. 4).

Embodiment three:

A kind of anti-buoyant circulation broken shell plastic methane tank with the swash plate hopper.Its basic structure is with embodiment two, institute's difference is: feed-pipe 1 vertically is positioned at a jiao of methane-generating pit fermentation vat A, the vertically through fermentation vat middle part from the methane-generating pit top, one swash plate hopper 21 is arranged at feed-pipe 1 bottom, and these swash plate hopper 21 1 ends are fixed on the pool wall of fermentation vat A, the other end is fixedly connected near the fermentation vat bottom centre district (referring to Fig. 9).

Among embodiment one, embodiment two, the embodiment three, the round shape dividing plate 7 in the described encloses container ₂The round shape resistance to air loss removable cover 11 that has a back-off to place on the fermentation vat skylight 9 that forms, round shape dividing plate 7 ₂And place a resistance to air loss cushion rubber 13 between the resistance to air loss removable cover 11, standing bolt 12 passes the round shape dividing plate 8 that supports the enclosing cover removable cover and is pressed on the round shape resistance to air loss removable cover 11 round shape resistance to air loss removable cover 11 is firmly covered on round shape dividing plate 7 ₂On, with 9 sealings of fermentation vat skylight.

Described methane-generating pit round shape dividing plate 7 ₂And support the round shape dividing plate 8 of enclosing cover removable cover, this round shape dividing plate 8 one ends and dividing plate with a slope 7 outside the round shape resistance to air loss removable cover 11 placed of back-off in addition ₁Fixedly connected, as to have a back-off to place on another port round shape removable cover 10, the top that goes out slag bath C, hydraulic pressure pond D has a window, and a removable cover 16 or removable cover 5 are respectively arranged on it; The mouth of pipe of described feed-pipe 1 has feed-pipe removable cover 3, and its top is provided with 1～3 feeding-passage mouth 23.

The fermentation vat A of the utility model methane-generating pit and gas dome B, go out the pond body of slag bath C, hydraulic pressure pond D, dividing plate in the pond, feed-pipe, residue outlet, swash plate hopper, pump around circuit pipe, recirculated water pressure pipe be by the PVC plastic production, the bottom of fermentation vat A, pool wall and with cylindrical container be divided into fermentation vat A, go out slag bath C, the round shape dividing plate 7 of hydraulic pressure pond D ₂And dividing plate 7 with a slope ₁All be the ruggedized construction (referring to Fig. 5, Fig. 6) of dull and stereotyped and afterburning lath combination.

A kind of conversion as the utility model embodiment two, embodiment three, described recirculated water pressure pipe 17 can be a long inclined tube or an oblique bend pipe, the oblique sweathouse that stretches in the lower end of this pipe, the lower end of the position of its lower end mouth of pipe and pump around circuit pipe 4 is symmetry roughly, can make the natural pond liquid in the whole pond participate in circulation, its circulating effect is good, but the fixing pin of recirculated water pressure pipe 17 is trouble (referring to Fig. 7).

As the embodiment of the invention two, another conversion of embodiment three, described hydraulic pressure pond has two, methane-generating pit top is divided into hydraulic pressure pond I-D1, vacant-E1, material-output tank C, hydraulic pressure pond II-D2, vacant-E2, or be divided into hydraulic pressure pond I-D1, vacant-E1, material-output tank C, hydraulic pressure pond II-D2, the position in two hydraulic pressure ponds is symmetry roughly, and be connected by a pipe connecting, wherein be equipped with pump around circuit pipe 4 near among the hydraulic pressure pond I-D1 of feed-pipe, be equipped with recirculated water pressure pipe 17 near among the hydraulic pressure pond II-D2 of residue outlet, two circulation tubes all can vertically be laid, natural pond liquid in the whole pond is participated in than systemic circulation, its circulating effect is good, and pump around circuit pipe 4 and recirculated water pressure pipe 17 is fixing more convenient, but will increase some manufacturing costs (referring to Fig. 8).

In the various embodiments described above, the shell of described encloses container, feed-pipe, residue outlet, pump around circuit pipe, recirculated water pressure pipe, swash plate hopper can be to field assembly after the prefabrication, cylindrical container described in the various embodiments described above also can directly be made at the scene, it also can not be the PVC plastics that its shell is made material, and the employing common plastics, but its compressive property and corrosion resistance are not as good as the PVC plastics.

A kind of conversion as the utility model embodiment, described hydraulic type circulation broken shell methane-generating pit also can and adopt traditional reinforced concrete structure, but its resistance to air loss and corrosion resistance are good not as good as usefulness plastics, particularly PVC plastic production, and, can only be to make at the scene.

Claims

1, a kind of anti-buoyant circulation broken shell methane-generating pit, the fermentation vat and the gas dome that comprise band feed-pipe and escape pipe, be with the slag bath that of discharge nozzle, the hydraulic pressure pond, described fermentation vat with go out slag bath, the hydraulic pressure pond is communicated with respectively and is positioned at one simultaneously and has the cylindrical container of removable cover and separated by dividing plate, this cylindrical container bottom is a fermentation vat, the middle part is a gas dome, top is slag bath and hydraulic pressure pond, feed-pipe is through fermentation vat middle part from the methane-generating pit top, discharge nozzle top is fixed on out on the dividing plate of slag bath bottom, the fermentation vat bottom is stretched in the lower end, be fixed with material interception net on the pool wall below natural pond, the middle and upper part liquid level of described fermentation vat, it is characterized in that: be connected with 3～20 pulling force ropes (19) in material interception net (20) below, these pulling force rope (19) one ends are fixedly linked with material interception net (20) evenly distributedly, and the other end is fixed on the pool wall of material interception net (20) below evenly distributedly.

2, anti-buoyant circulation broken shell methane-generating pit according to claim 1, it is characterized in that: be provided with two circulation tubes that are connected with bottom fermentation vat (A) in the hydraulic pressure pond (D) on described circulation broken shell methane-generating pit top, wherein, one near feed-pipe (1) is pump around circuit pipe (4), pump around circuit pipe (4) stretches into fermentation vat upper strata marsh liquid region (A1), its lower end port is provided with the Movable valve (22) of a unidirectional unlatching, one near discharge nozzle (18) is recirculated water pressure pipe (17), this recirculated water pressure pipe stretches into fermentation vat middle level marsh liquid region (A3), and an end that is communicated with hydraulic pressure pond (D) has the Movable valve (15) of a unidirectional unlatching.

3, anti-buoyant circulation broken shell methane-generating pit according to claim 2, it is characterized in that: feed-pipe (1) is positioned at a jiao of methane-generating pit fermentation vat (A), the vertically through fermentation vat middle part from the methane-generating pit top, one swash plate hopper (21) is arranged at feed-pipe (1) bottom, and these swash plate hopper (21) one ends are fixed on the pool wall of fermentation vat (A), the other end is fixedly connected near the fermentation vat bottom centre district.

4, according to claim 1 or 2 or 3 described anti-buoyant circulation broken shell methane-generating pits, it is characterized in that: the mouth of pipe of described feed-pipe (1) has feed-pipe removable cover (3), and its top is provided with 1～3 feeding-passage mouth (23).

5, according to claim 1 or 2 or 3 described anti-buoyant circulation broken shell methane-generating pits, it is characterized in that: the round shape dividing plate (7 of described encloses container ₂) the round shape resistance to air loss removable cover (11) that has a back-off to place on the fermentation vat skylight (9) that forms, support round shape dividing plate (8) one ends and the dividing plate with a slope (7 of enclosing cover removable cover ₁) fixedly connected, the round shape removable cover (10) that has a back-off to place on the another port, round shape dividing plate (7 ₂) and resistance to air loss removable cover (11) between place a resistance to air loss cushion rubber (13), standing bolt (12) passes the round shape dividing plate (8) that supports the enclosing cover removable cover and is pressed in round shape resistance to air loss removable cover (11) and goes up round shape resistance to air loss removable cover (11) is firmly covered on round shape dividing plate (7 ₂) on, fermentation vat skylight (9) are sealed.

6, anti-buoyant circulation broken shell methane-generating pit according to claim 4 is characterized in that: the round shape dividing plate (7 of described encloses container ₂) the round shape resistance to air loss removable cover (11) that has a back-off to place on the fermentation vat skylight (9) that forms, support round shape dividing plate (8) one ends and the dividing plate with a slope (7 of enclosing cover removable cover ₁) fixedly connected, the round shape removable cover (10) that has a back-off to place on the another port, round shape dividing plate (7 ₂) and resistance to air loss removable cover (11) between place a resistance to air loss cushion rubber (13), standing bolt (12) passes the round shape dividing plate (8) that supports the enclosing cover removable cover and is pressed in round shape resistance to air loss removable cover (11) and goes up round shape resistance to air loss removable cover (11) is firmly covered on round shape dividing plate (7 ₂) on, fermentation vat skylight (9) are sealed.

7, according to claim 1 or 2 or 3 described anti-buoyant circulation broken shell methane-generating pits, it is characterized in that: the fermentation vat of described methane-generating pit (A), go out the pond body of slag bath (C), hydraulic pressure pond (D), dividing plate in the pond, feed-pipe, discharge nozzle, swash plate hopper be by the PVC plastic production, the bottom of fermentation vat (A), pool wall and with encloses container be divided into fermentation vat (A), go out slag bath (C), the round shape dividing plate (7 of hydraulic pressure pond (D) ₂) and dividing plate with a slope (7 ₁) all be the ruggedized construction of dull and stereotyped and afterburning lath combination.

8, anti-buoyant circulation broken shell methane-generating pit according to claim 6, it is characterized in that: the fermentation vat of described methane-generating pit (A), go out the pond body of slag bath (C), hydraulic pressure pond (D), dividing plate in the pond, feed-pipe, discharge nozzle, swash plate hopper be by the PVC plastic production, the bottom of fermentation vat (A), pool wall and with encloses container be divided into fermentation vat (A), go out slag bath (C), the round shape dividing plate (7 of hydraulic pressure pond (D) ₂) and dividing plate with a slope (7 ₁) all be the ruggedized construction of dull and stereotyped and afterburning lath combination.