CN109929740A - Excrement sludge aerobic fermentation unit and its multilayer aerobic fermentation system - Google Patents

Abstract

The invention relates to the technical field of fecal sludge treatment, a fecal sludge aerobic fermentation unit and a multi-layer aerobic fermentation system thereof, comprising a fermentation chamber for accommodating fecal sludge; An edge filter for mud moisture, the side wall of the fermentation chamber is provided with an edge drain that cooperates with the edge filter to discharge moisture, and a plurality of middle filters for filtering the moisture of the fecal sludge are arranged in the interior of the fermentation chamber. The middle filter is provided with a channel, the channel is provided with an air supply pipe for supplying hot air and oxygen, both ends of the middle filter are connected to the edge filter, and one side wall of the fermentation chamber is There is at least one air outlet on it, which has the advantages of reasonable structure design, good drainage effect, sufficient oxygen supply, and high aerobic fermentation efficiency.

Description

Fecal sludge aerobic fermentation unit and its multi-layer aerobic fermentation system

technical field

The invention relates to the technical field of fecal sludge treatment, in particular to a fecal sludge aerobic fermentation unit and a multi-layer aerobic fermentation system thereof.

Background technique

The life of urban residents will produce a large amount of fecal sludge, which is an extremely complex heterogeneous object composed of organic debris, bacterial cells, inorganic particles, and colloids. In addition to a large amount of water, fecal sludge also contains a large amount of organic matter and a variety of microorganisms. The direct discharge of a large amount of untreated sludge is not only prone to corruption and odor, but also pollutes water quality, atmosphere and soil. Therefore, it is necessary to carry out scientific and harmless treatment of urban fecal sludge to reduce the adverse effects of urban fecal sludge, and at the same time extract useful resources from fecal sludge to turn waste into treasure.

Aerobic fermentation technology is one of the effective ways to treat fecal sludge. Through aerobic fermentation technology, fecal sludge can be treated at low cost, and the treated fecal sludge can be processed into organic fertilizer and nutrient fertilizer. To a certain extent, the problem of fecal sludge treatment has been solved. Most of the existing aerobic fermentation technologies are processed in the form of fermentation towers. The existing sludge aerobic fermentation tower system is mainly composed of a feeding mechanism, a multi-layer fermentation tower, a turning mechanism, an air intake mechanism and an exhaust mechanism. The core is to provide oxygen and suitable temperature for aerobic fermentation. It is well known that fecal sludge contains a large amount of water (usually 85%-90% water content) during the fermentation process. A large amount of water prevents oxygen from entering the fecal sludge for aerobic fermentation, resulting in low fermentation efficiency of the entire aerobic fermentation system, making it difficult to meet demand. In addition, the fecal sludge is also prone to corruption and odor in the case of insufficient oxygen supply. Therefore, how to quickly and cost-effectively remove the water in the fecal sludge while ensuring sufficient oxygen supply is the key to further improving the performance of the aerobic fermentation device.

It should be noted that the above content belongs to the technical cognition category of the inventor, and does not necessarily constitute the prior art.

SUMMARY OF THE INVENTION

The invention provides a fecal sludge aerobic fermentation unit and a multi-layer aerobic fermentation system, which have the advantages of reasonable structure design, good drainage effect, sufficient oxygen supply and high aerobic fermentation efficiency, and solve the problems existing in the prior art .

The technical scheme adopted by the present invention for solving the above-mentioned technical problems is:

The fecal sludge aerobic fermentation unit includes a fermentation chamber for accommodating fecal sludge, an edge filter for filtering the moisture of the fecal sludge is arranged along the side wall of the fermentation chamber, and the side wall of the fermentation chamber is provided with The edge filter cooperates with the edge drain port for discharging water, and a plurality of middle filters for filtering the moisture of the fecal sludge are arranged inside the fermentation chamber. The middle filter is provided with a channel, and the channel is provided with An air supply pipe for supplying hot air and oxygen, the two ends of the middle filter are connected to the edge filter, and at least one air outlet is provided on one side wall of the fermentation chamber.

The edge filter includes an obliquely arranged edge filter, the bottom of the edge filter is provided with an edge bottom plate for introducing moisture into the edge drain, the edge filter is ∠-shaped, and is installed in the on the side wall of the fermentation chamber.

The middle filter is in the shape of a trapezoid, the middle of the middle filter is provided with a channel, the bottom edge of the middle filter is the middle bottom plate, and the other edges are the middle filter screen.

Four corners of the central filter are provided with reinforcing rods.

The upper end of the air supply pipe is provided with a triangular baffle plate, and the lower end of the air supply pipe is provided with a plurality of air outlets at intervals along its length direction.

The bottom of the fermentation chamber is provided with an overturning mechanism for exporting the fecal sludge. The overturning mechanism includes a plurality of flipping plates arranged next to each other. The center of the bottom of the flipping plate is provided with a turning shaft, and both ends of the turning shaft are installed by bearings. On both sides of the fermentation chamber, push rods are eccentrically arranged on the side walls of the flaps, and hinge rods A are hingedly connected to the push rods. All the hinge rods A are hingedly connected to driving rods, and one end of the driving rod is An inversion drive for driving the rotation of the flap is connected, and the inversion drive is hingedly connected with the fermentation chamber.

The turning drive is a hydraulic cylinder or an air cylinder.

A hinged rod B is also hingedly connected to the hinged connection between the hinged rod A and the drive rod. All the hinged rods B are hingedly connected to fixed rods, and both ends of the fixed rods are fixedly connected to the fermentation chamber.

The air outlet is in the shape of a prism, and the inlet end of the air outlet is provided with a particle filter for filtering particles.

The air supply pipe is connected to the hot air blower A through the air inlet pipe, the air outlet is connected to the induced draft fan A through the air exhaust pipe, the side drain is connected to the sewage pool through the side drain pipe, and the bottom drain is connected. The mouth is connected to the cesspool through the bottom drain.

A multi-layer aerobic fermentation system, including a rack, an air intake and exhaust system and a controller, the rack is provided with a feeding mechanism and a rake mechanism, and a plurality of fecal sludge is arranged on the rack from top to bottom The aerobic fermentation unit, the feeding mechanism and the rake mechanism cooperate to uniformly introduce the fecal sludge into the fermentation chamber of the uppermost layer of the fecal sludge aerobic fermentation unit, and there is at least one layer of the fecal sludge from top to bottom. The oxygen fermentation unit is provided with a stirring mechanism, the stirring mechanism includes a stirrer arranged horizontally between two adjacent middle filters, and the same end of all the stirrers is connected with a stirring driver, and the air intake and exhaust system is: Each layer of the fecal sludge aerobic fermentation unit supplies and exhausts air, and the feeding mechanism, the raking mechanism, the stirring mechanism and the air intake and exhaust system are respectively connected to the controller.

The stirring driver includes a sprocket disposed at one end of the agitator, the sprocket is connected by a chain, and a drive sprocket is also connected to the chain, and the drive sprocket is connected to a drive motor through a transmission shaft, and the drive motor Electrically connected to the controller.

The stirrer is a paddle stirrer.

The stirring mechanism is provided on the fecal sludge aerobic fermentation unit of the second layer from top to bottom.

Counting from top to bottom, there is at least one layer of the turning mechanism in the fecal sludge aerobic fermentation unit. A bottom filtering mechanism is provided on the turning mechanism. The top is covered with a bottom filter screen for filtering the moisture of the fecal sludge, the bottom filter screen is installed on the flap, and the bottom of the flap is provided with a water guide, the water guide includes a plurality of V-shaped plates arranged at intervals, adjacent to An inverted V-shaped plate capable of introducing water into the V-shaped plate is arranged above the two V-shaped plates, the inverted V-shaped plate and the ends of the V-shaped plate are connected by connecting rods, and the inverted V-shaped plate and the V-shaped plate are connected by connecting rods. There is a gap between the plates, and a guide plate for guiding the water in the water guide is arranged below one end of the water guide. A return spring is connected between the plate and the support plate, and the support plate is provided with a bottom drain which cooperates with the guide plate to lead out water.

The height of one end of the V-shaped plate and the inverted V-shaped plate away from the bottom drain is greater than the height of one end close to the bottom drain.

Both ends of the flip plate are connected with the outermost V-shaped plate through a connecting plate.

The deflector in the fecal sludge aerobic fermentation unit is arranged on the side wall of the fecal sludge aerobic fermentation unit in the layer below it.

The air intake and exhaust system includes a fan B and an induced draft fan B, and the air outlet of the fan B is connected to the air inlet pipe in each layer of fecal sludge aerobic fermentation unit through pipes, and each layer of the fecal sludge aerobic fermentation unit is connected. There is a control switch on the air inlet pipe corresponding to the fermentation unit, and a heater is also provided on the air inlet pipe corresponding to the fecal sludge aerobic fermentation unit on the uppermost layer, and the induced draft fan B is connected to the exhaust pipe through the pipe , the fan B, the induced draft fan B, the control switch and the heater are respectively electrically connected to the controller.

Alternatively, the air intake and exhaust system is a circulating air system, and the circulating air system includes an evaporator, and the inlets of the evaporators are respectively connected with the exhaust pipes in the aerobic fermentation units of each layer of the fecal sludge through pipes, so The evaporator is connected to the condenser through a pipeline, the evaporator is connected to the sewage pool through a pipeline, a compressor is also connected between the evaporator and the condenser, and an expansion valve is also connected between the evaporator and the condenser and sub-condenser, the outlet of the condenser is connected with a circulating fan, and the circulating fan sends the dry hot air into the air inlet pipe of the aerobic fermentation unit of the fecal sludge in each layer through the pipeline, and the fecal sludge in each layer is Control switches are respectively provided on the air inlet pipes corresponding to the sludge aerobic fermentation unit, and heaters are also provided on the air inlet pipes corresponding to the fecal sludge aerobic fermentation unit on the uppermost layer. The condenser, compressor and circulating fan, control switch and heater are respectively connected with the controller.

The feeding mechanism includes a lifting feeder, the discharge port of the lifting feeder is correspondingly provided with a screw feeder, the upper end of the screw feeder is provided with a hopper, and the end of the screw feeder is set at the fermentation site. indoor.

The rake mechanism includes a rake frame, two ends of the rake frame are respectively installed on the rake chain, and the two ends of each rake chain are respectively installed with rake sprockets, and the two rake sprockets at the same end pass through the rake chain. The rake material rotating shafts are connected, and a rake material driving sprocket is installed on one of the rake material rotating shafts, and the rake material driving sprocket is connected with the rake material driving motor through the rake material driving chain.

The controller is a PLC controller, and the electrical control operation of the machine is controlled by the PLC controller program.

The present invention adopts the above-mentioned technical scheme, and can bring the following beneficial effects:

1. By designing the aerobic fermentation unit, especially designing filters around and in the middle of the fermentation chamber, the water in the fecal sludge can be quickly and quickly discharged, so that the air can enter the fecal sludge quickly and in time for aerobic fermentation.

2. By setting the turning mechanism at the bottom of the aerobic fermentation unit, the fermented fecal sludge can be quickly exported; by setting the bottom filter mechanism on the turning plate, the water can be quickly exported from the bottom of the fecal sludge to further improve drainage efficiency.

3. Setting the water guide in the form of a V-shaped plate and an inverted V-shaped plate cannot quickly discharge the water in the fecal sludge in time, and the water vapor generated by the fecal sludge during the fermentation process rises and the flip plate is condensed Formed into water, the water falls into the V-shaped plate and is exported, and the water generated by the cold can be discharged in time.

4. By setting the deflector, and the deflector is hinged on the side wall of the fermentation chamber, at the same time, the deflector is reset by the return spring. When the flap is horizontal, the deflector is close to the flap under the action of the reset spring. The height of one side is greater than that of the side away from the flap, so as to better guide the water; when the flap is turned over, the deflector is driven to flip down under the action of the flap, so that the height of the side close to the flap is smaller than that of the side away from the flap. One side of the flap, thereby effectively preventing the fecal sludge from being led out from the deflector during blanking.

5. For the fecal sludge aerobic fermentation unit, the fan is used for air supply (the heater is installed on the top layer), and the induced draft fan is used for air exhaust, which has the advantages of simple structure, low cost, simple and convenient equipment maintenance, and can provide sufficient oxygen and suitable Fermentation temperature air and other advantages.

6. By designing a multi-layer aerobic fermentation system, the amount of aerobic fermentation can be increased, and the production efficiency can be improved. At the same time, a stirring mechanism is set on the uppermost layer or the uppermost two layers, which can effectively prevent the fecal sludge caused by a large amount of water discharged. The problems of compaction and agglomeration of fecal sludge provide a prerequisite for the subsequent oxygen to fully contact the fecal sludge and rapid aerobic fermentation.

Description of drawings

Fig. 1 is the partial top view structure schematic diagram of fecal sludge aerobic fermentation unit of the present invention;

Fig. 2 is the structural representation of the edge filter of the present invention;

Fig. 3 is the structural representation of the middle filter of the present invention;

Fig. 4 is the structural representation of the turning mechanism of the fecal sludge aerobic fermentation unit of the present invention;

Fig. 5 is the partial three-dimensional structure schematic diagram of the overturning mechanism of the fecal sludge aerobic fermentation unit of the present invention;

6 is a schematic structural diagram of the multi-layer fecal sludge aerobic fermentation system of the present invention;

Fig. 7 is the structural representation of the stirring mechanism of the present invention;

8 is a schematic structural diagram of the bottom filter mechanism at the bottom of the overturning mechanism in the multi-layer fecal sludge aerobic fermentation system of the present invention;

9 is a schematic structural diagram of the bottom filter mechanism of the present invention installed on the turning mechanism;

Fig. 10 is a partial three-dimensional structural schematic diagram of the bottom filter mechanism of the present invention installed on the turning mechanism;

11 is a schematic structural diagram of the bottom water guide of the overturning mechanism of the present invention;

12 is a schematic structural diagram of the cooperation of the water guide and the guide plate of the present invention;

13 is a schematic structural diagram of the rake mechanism of the present invention;

Fig. 14 is the structural representation of the feeding mechanism of the present invention;

15 is a schematic diagram of the principle of using a hot air blower and an induced draft fan in the air intake and exhaust system of the present invention;

Figure 16 is a schematic diagram of the principle of adopting a circulating air system for the air intake and exhaust system of the present invention;

In the figure, 1, fermentation chamber, 2, side filter, 201, side filter, 202, side bottom plate, 3, side drain, 4, middle filter, 401, middle bottom plate, 402, middle filter Net, 403, Channel, 404, Reinforcing rod, 5, Air supply pipe, 501, Triangular deflector, 502, Air outlet, 6, Air outlet, 601, Particle filter, 7, Turning mechanism, 701, Flap plate , 702, flip shaft, 703, push rod, 704, hinge rod A, 705, drive rod, 706, flip driver, 707, hinge rod B, 708, fixed rod; 8, bottom filter mechanism, 801, through hole, 802 , bottom filter, 803, water guide, 8031, V-plate, 8032, inverted V-plate, 8033, connecting rod, 8034, connecting plate, 804, deflector, 805, return spring, 806, bottom drain , 807, support plate, 9, air inlet duct, 10, hot air blower A, 11, exhaust duct, 12, induced draft fan A, 13, sewage pool, 14, rack, 15, exhaust system, 1501, fan B , 1502, induced draft fan B, 1503, evaporator, 1504, condenser, 1505, compressor, 1506, subcondenser, 1507, circulating fan, 1508, expansion valve, 1509, control switch, 1510, heater, 16, Controller, 17, Feeding Mechanism, 1701, Lifting Feeder, 1702, Screw Feeder, 1703, Receiving Hopper, 18, Rake Mechanism, 1801, Rake Frame, 1802, Rake Chain, 1803, Rake Chain wheel, 1804, rake shaft, 1805, rake drive sprocket, 1806, rake drive chain, 1807, rake drive motor, 19, fecal aerobic fermentation unit, 20, stirring mechanism, 2001, agitator, 2002, Stirring drive, 2003, sprocket, 2004, chain, 2005, drive sprocket, 2006, drive motor, 21, bottom link, 22, side drain, 23, bottom drain.

Detailed ways

In order to more clearly illustrate the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.

In addition, in the description of the present invention, it should be understood that the terms "around the side wall", "edge", "middle", "bottom", "upper end", "top-down", "uppermost layer", etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the "feeding mechanism" in this application refers to a device capable of transporting fecal sludge to a certain height. Such devices belong to the prior art and are widely used. In this application This part of the content involved in the multi-layer aerobic fermentation system belongs to the prior art, so it will not be repeated here. It should be understood that the "screw distributor" in this application refers to a device that can transport materials to a certain position through the principle of a screw. This device is widely used in all walks of life, and its working principle and structural composition belong to the existing technology, this application does not make improvements to this part of the content, but simply applies it again, so it will not be repeated here. It should be understood that the "controller" in this application refers to the hardware that can realize the operation of each electrical appliance through a program. The controller is directly purchased, and the corresponding function is realized by writing a program. This part of the content is mature in technology, and the improvement of the present invention The point is not here, the focus is on the structural design, so it will not be repeated here.

In addition, the terms "A" and "B" are used for descriptive purposes only, and should not be construed to indicate or imply relative importance or to imply indicate the number of technical features indicated. Thus, a feature delimited with "A", "B" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In one embodiment, as shown in Figures 1-8, the fecal sludge aerobic fermentation unit includes a fermentation chamber 1 for containing fecal sludge, and the height of the fecal sludge is usually 2/3 of the height of the fermentation 1, along the The inner side wall of the fermentation chamber 1 is provided with an edge filter 2 for filtering the moisture of the fecal sludge, so that the fecal sludge can be discharged from the surrounding. The side drain 3 for water discharge, the fermentation chamber 1 is provided with a plurality of middle filters 4 for filtering the moisture of the fecal sludge, the middle filter 4 is provided with a channel 403, and the channel 403 is provided with For the air supply pipe 5 for supplying hot air and oxygen, both ends of the middle filter 4 are connected to the edge filter 2 , and at least one air outlet 6 is provided on one side wall of the fermentation chamber 1 . By designing the fecal sludge aerobic fermentation unit 19, especially designing filters around and in the middle of the fermentation chamber 1, the water in the fecal sludge can be quickly and quickly discharged, so that the air can enter the fecal sludge quickly and in time. Aerobic fermentation.

The edge filter 2 includes an oblique edge filter 201, the bottom of the edge filter 201 is horizontally provided with a side bottom plate 202 for introducing moisture into the edge drain 3, and the edge filter 2 is in the shape of a side plate 202. ∠ shape and installed on the side wall of the fermentation chamber. Adopting the structural form of the edge filter screen 201 arranged obliquely has the advantages of good filtering effect and high structural strength.

The middle filter 4 is in the shape of a trapezoid, and a channel 403 is provided in the middle of the middle filter 4 . While conducting water, it can also provide installation space for the air supply pipe, which is convenient for better air supply.

Four corners of the central filter 4 are provided with reinforcing rods 404 . Enhance the overall structural strength.

The upper end of the air supply pipe 5 is provided with a triangular baffle plate 501, and the lower end of the air supply pipe 5 is provided with a plurality of air outlets 502 evenly spaced along its length direction. The air port 502 is arranged below the air supply pipe to effectively prevent moisture from entering the air supply pipe 5 .

The air outlet 6 is in the shape of a pyramid, and the inlet end of the air outlet 6 is provided with a particle filter 601 for filtering particles. The particle filter 601 here is mainly to prevent the fecal sludge particles from flowing out.

The bottom of the fermentation chamber 1 is provided with an overturning mechanism 7 for exporting the fecal sludge. The overturning mechanism 7 includes a plurality of flaps 701 which are arranged next to each other. The bottom is sealed, when all the flaps 701 are turned 90 degrees and vertically arranged, a circulation channel is formed between two adjacent flaps 701 to facilitate the export of fecal sludge from the fermentation chamber 1. The bottom center of the flaps 701 is provided with a flipper A rotating shaft 702, both ends of the turning shaft 702 are installed on both sides of the fermentation chamber 1 through bearings, and push rods 703 are eccentrically provided on the side walls of both ends of the turning plate 701 in the length direction, and hinge rods are hingedly connected to the push rods 703 A704, all the hinge rods A704 are hingedly connected with the driving rod 705, and one end of the driving rod 705 is connected with the flipping driver 706 that drives the turning plate 701 to rotate. The synchronization of 701 operation is consistent, which is convenient for material introduction and sealing to the bottom of fermentation chamber 1.

The turning drive 706 is a hydraulic cylinder or an air cylinder.

A hinged rod B707 is also hingedly connected at the hinged connection between the hinged rod A704 and the drive rod 705, and all the hinged rods B707 are hingedly connected to the fixed rods 708, and the two ends of the fixed rods 708 are fixedly connected to the fermentation chamber 1. Setting the hinge rod B707 and the fixed rod 708 can limit the rotation angle of the flap 701, that is, when the hinge rod A704 and the hinge rod B707 are collinear, it is the maximum angle at which the flap 701 is flipped, and the maximum flip angle in this application is preferably set is 90 degrees.

The air supply pipe 5 is connected to the hot air blower A10 through the air inlet pipe 9, the air outlet 6 is connected to the induced draft fan A12 through the air exhaust pipe 11, and the side drain 3 is connected to the sewage pool through the side drain pipe 22. 13, the bottom drain 714 is connected to the sewage pool 13 through the bottom drain pipe 13. Using the hot air blower 10 to supply air to the aerobic fermentation chamber has the advantages of low cost, simple equipment control and high air supply efficiency.

As shown in Figures 9-14, the multi-layer aerobic fermentation system includes a rack 14, an air intake and exhaust system 15 and a controller 16. The rack 14 is provided with a feeding mechanism 17 and a rake mechanism 18. The rack 14 is provided with a plurality of fecal sludge aerobic fermentation units 19 from top to bottom. The feeding mechanism 17 and the rake mechanism 18 cooperate to uniformly introduce the fecal sludge into the uppermost fecal sludge aerobic fermentation unit. In the fermentation chamber 1 of 19, there is at least one layer (usually the uppermost layer and the second layer are selected) from the top to the bottom. The fecal sludge aerobic fermentation unit 19 is provided with a stirring mechanism 20, and the stirring mechanism 20 includes a horizontal setting. Between the agitators 2001 between two adjacent central filters 4, the same end of all the agitators 2001 is connected with a stirring driver 2002, and the air intake and exhaust system 15 is the aerobic fermentation unit of the fecal sludge for each layer 19 Air supply and exhaust, the feeding mechanism 17, the rake mechanism 18, the stirring mechanism 20 and the air intake and exhaust system 15 are respectively connected to the controller 16. By designing a multi-layer aerobic fermentation system, the amount of aerobic fermentation can be increased, and the production efficiency can be improved. At the same time, the stirring mechanism 20 is arranged on the uppermost layer or the uppermost two layers, which can effectively prevent the feces caused by the large amount of water discharged from the fecal sludge. The problems of sludge compaction and agglomeration provide the premise for the subsequent oxygen to fully contact the fecal sludge for rapid aerobic fermentation.

The stirring driver 2002 includes a sprocket 2003 arranged at one end of the agitator 2001, the sprocket 2003 is connected by a chain 2004, and a driving sprocket 2005 is also connected to the chain 2004, and the driving sprocket 2005 is connected with the drive shaft through a transmission shaft. A drive motor 2006 is connected, and the drive motor 2006 is electrically connected to the controller 16 . The agitator 2001 in the same fermentation unit is driven for stirring through chain transmission, which has the advantages of inelastic sliding and slippage, accurate average transmission ratio, reliable operation, high efficiency, large transmission power, and strong overload capacity. It is very suitable for this application. working application environment.

The stirrer 2001 is a paddle stirrer.

A stirring mechanism 20 is provided on the fecal sludge aerobic fermentation unit 19 on the second layer from top to bottom.

Counting from top to bottom, there is at least one layer of the inversion mechanism 7 in the fecal sludge aerobic fermentation unit 19, and a bottom filter mechanism 8 is provided on the bottom filter mechanism 8. The bottom filter mechanism 8 includes several A through hole 801, the top of the through hole 801 is covered with a bottom filter screen 802 for filtering the moisture of the fecal sludge, the bottom filter screen 802 is installed on the flap 701, and the bottom of the flap 701 is provided with a water guide 803, the guide The water device 803 includes a plurality of V-shaped plates 8031 arranged at even intervals, and an inverted V-shaped plate 8032 capable of introducing water into the V-shaped plate 8031 is arranged above between two adjacent V-shaped plates 8031. The inverted V-shaped plate 8032 The ends of the two ends of the V-shaped plate 8031 are connected by connecting rods 8033, and there is a gap between the inverted V-shaped plate 8032 and the V-shaped plate 8031. The deflector 804 from which the water is led out, the deflector 804 is hingedly connected with the support plate 807 arranged below the fermentation chamber 1, and a return spring 805 is connected between the deflector 804 and the support plate 807, and the support plate 807 There is a bottom drain port 806 that cooperates with the deflector 804 to guide water out. By improving the bottom of the flap 701, the water in the fecal sludge can be diverted from the bottom to further improve the water removal efficiency and effect.

The height of one end of the V-shaped plate 8031 and the inverted V-shaped plate 8032 away from the bottom drain port 806 is greater than the height of one end close to the bottom drain port 806 . The inclined setting makes it easy for the water to flow out quickly under the action of gravity.

The two ends of the flip plate 701 are connected with the outermost V-shaped plate 8031 at the lower end through a connecting plate 8034 .

A bottom filter mechanism 8 is provided on the fecal sludge aerobic fermentation unit 19 on the second layer from top to bottom.

The deflector 712 in the fecal sludge aerobic fermentation unit 19 is arranged on the side wall of the fermentation chamber of the fecal sludge aerobic fermentation unit 19 one layer below it. That is, the support plate is the side wall of the fermentation chamber of the lower layer.

The air intake and exhaust system 15 includes a fan B1501 and an induced draft fan B1502. The air outlet of the fan B1501 is connected to the air inlet pipe 9 in the aerobic fermentation unit 19 of each layer of fecal sludge through pipes. Control switches 1509 are respectively provided on the air inlet pipes 9 corresponding to the aerobic fermentation unit 19, and heaters 1540 are also provided on the air inlet pipes 9 corresponding to the fecal sludge aerobic fermentation unit 19 on the uppermost layer. The induced draft fan B1502 They are respectively connected to the exhaust duct 11 through pipes, the fan B1501, the induced draft fan B1502, the control switch 1509 (the control switch 1509 here is preferably an electromagnetic control switch, which can realize electrical control and direct purchase) and the heater 1510 (here the heating The device is similar to the working principle of a hair dryer, and the air is heated by an electric heating wire. The existing equipment, directly purchased) is electrically connected to the controller 16 respectively.

Alternatively, the air intake and exhaust system 15 is a circulating air system, and the circulating air system includes an evaporator 1503. The inlet of the evaporator 1503 is connected to the exhaust air in each layer of the fecal sludge aerobic fermentation unit 19 through pipes respectively. The pipeline 11 is connected, the evaporator 1503 is connected to the condenser 1504 through the pipeline, the evaporator 1503 is connected to the sewage pool 13 through the pipeline, and the compressor 1505 is also connected between the evaporator 1503 and the condenser 1504. An expansion valve 1508 and a sub-condenser 1506 are also connected between the evaporator 1503 and the condenser 1504. The outlet of the condenser 1504 is connected with a circulating fan 1507. The circulating fan 1507 sends dry hot air into each floor through pipes. In the air inlet duct 9 of the fecal sludge aerobic fermentation unit 19, a control switch 1509 is provided on the air inlet duct 9 corresponding to the fecal sludge aerobic fermentation unit 19 on each layer, and the fecal sludge aerobic fermentation unit 19 on the uppermost layer is provided with a control switch 1509. The air inlet duct 9 corresponding to the fermentation unit 19 is also provided with a heater 1510. The evaporator 1503, the condenser 1504, the sub-condenser 1506, the compressor 1505, the circulating fan 1507, the control switch 1509 and the heater 1510 are respectively connected with the control device 16 is connected. The use of circulating air for air supply and exhaust has the advantages of high dehumidification efficiency and less heat loss in the drying process.

The feeding mechanism 17 includes a lifting feeder 1701. The discharge port of the lifting feeder 1701 is provided with a screw feeder 1702 correspondingly. The upper end of the screw feeder 1702 is provided with a hopper 1703. The end of the feeder 1702 is arranged in the fermentation chamber 1 .

The rake mechanism 18 includes a rake frame 1801, the two ends of the rake frame 1801 are respectively installed on the rake chain 1802, the two ends of each rake chain 1802 are respectively installed with a rake sprocket 1803, and the two The rake sprocket 1803 is connected by a rake rotation shaft 1804 , one of which is mounted on a rake rotation shaft 1804 with a rake drive sprocket 1805 , and the rake drive sprocket 1805 is connected to a rake drive motor 1807 through a rake drive chain 1806 .

The controller 16 is a PLC controller, and the electrical control operation of the machine is controlled by the PLC controller program.

The working process of the multi-layer aerobic fermentation system:

The present invention takes the aerobic fermentation system composed of 4 layers of fecal sludge aerobic fermentation units 19 as an example to illustrate the working principle, and uses the fan B1501 and the induced draft fan B1502 for air supply and exhaust as an example to illustrate. At the same time, the above two The fecal sludge aerobic fermentation unit 19 is equipped with a stirring mechanism 20, the upper two layers are equipped with a bottom filtering mechanism, the lower two layers are not equipped with a bottom filtering mechanism, and the lower two layers are not equipped with a stirring mechanism 20.

When working, firstly, the fecal sludge is transported to the uppermost end of the fermentation system through the feeding mechanism 17, and the fecal sludge (water content is usually 85%-90%) enters the hopper 1703, and then enters the screw conveyor 1702 through the hopper 1703. Inside, the screw conveyor 1702 transports the fecal sludge into the fermentation chamber 1, and then the rake drive motor 1807 drives the rake 1801 to reciprocate through the chain drive to uniformly introduce the fecal sludge into the fermentation chamber 1. It should be noted here that the rake The height of the bottom end of the rack 1801 is higher than the middle filter 4 and the side filter 2 (usually about 5 cm higher), and the height of the fecal sludge after feeding is about 2/3 of the height of the fermentation chamber 1 At the same time, the air outlet 6 is arranged on the side wall of the fermentation chamber 1 above the fecal sludge; after the fecal sludge enters the fermentation chamber 1, because the surrounding, middle and bottom of the fermentation chamber 1 are respectively provided with filters for filtering moisture, and then the moisture It will flow out from the drain through the filter, and enter the sewage pool through the drain pipe for collection. At the same time, the agitator 2001 is driven to rotate under the action of the driving motor 2006 to fully stir the fecal sludge to avoid agglomeration due to water discharge. At the same time, the fan B1501 Work, heated by the heater 1510, the air with a certain temperature and air will enter the air supply pipe 5 through the uppermost air inlet pipe 9, and be discharged from the air outlet 502 of the air supply pipe 5, and a large amount of air enters the fermentation chamber 1 and the fecal sludge is carried out. Fully contact to carry out aerobic fermentation to improve fermentation efficiency and effect, after the first layer of fecal sludge aerobic fermentation unit 19, the water content of fecal sludge is usually about 60%; after a period of fermentation (usually 24 hour), the drive rod 705 is driven to move by the overturning driver 706, and at the same time, the hinge rod A704 is driven to pull the flap 701 to rotate 90 degrees, and then a gap is formed between the two adjacent flaps 701, and the fecal sludge falls from the gap to the next layer The fecal sludge aerobic fermentation unit 19 is further fermented. When the flap 1701 rotates, the side wall of the flap presses down the deflector 804, thereby causing the deflector 804 to incline downward to prevent the fecal sludge from flowing out through the deflector 804. , after the feeding is completed, the flap 701 is reset, and at the same time, under the action of the return spring 713, the deflector 804 is inclined upward, so that the water can continue to be led out. The fecal sludge undergoes layer-by-layer aerobic fermentation from top to bottom, and the fermented fecal sludge is exported from the last layer. The water content of the last layer of fecal sludge is generally about 30%. The advantages of the aerobic fermentation system of the present application are that it can discharge water layer by layer in time, stir (pulverize) the fecal sludge, and supply oxygen quickly and in time, thereby improving the efficiency and effect of aerobic fermentation. One fan B1501 can supply air to one layer of fecal sludge aerobic fermentation unit 19 as needed, or one fan B1501 can supply air to multi-layer fecal sludge aerobic fermentation unit 19 at the same time (through the control switch 1509 to supply air one by one Each layer of fecal sludge aerobic fermentation unit 19 provides air), and the specific use should be reasonably selected according to the air supply demand and the power of the fan B1501; in the same way, one induced draft fan B1502 can supply a layer of fecal sludge aerobic fermentation unit. 19 exhaust, and can also exhaust the multi-layer fecal sludge aerobic fermentation unit 19 at the same time.

The above-mentioned specific embodiments are not intended to limit the protection scope of the present invention. For those skilled in the art, any alternative improvements or transformations made to the embodiments of the present invention fall within the protection scope of the present invention.

The parts that are not described in detail in the present invention are the well-known technologies of those skilled in the art.

Claims (10)

1. excrement sludge aerobic fermentation unit, which is characterized in that including the fermenting cellar for accommodating excrement sludge, along the fermentation It is equipped within indoor side wall one week the edge filter of filtering excrement sludge water content, the fermenting cellar side wall is equipped with and edge filter Cooperate the edge discharge outlet that moisture is discharged, the middle part mistake of multiple filtering excrement sludge water contents is equipped at intervals with inside the fermenting cellar Filter, the middle part filter is interior to be equipped with channel, and the air duct of hot wind supply and oxygen, the middle part filtering are equipped in the channel Device both ends are connect with edge filter, and fermenting cellar side side wall is equipped at least one exhaust outlet.

2. excrement sludge aerobic fermentation unit according to claim 1, it is characterised in that: the edge filter includes inclining The edge filter screen being tiltedly arranged, the edge filtering sieve bottom is equipped with the edge bottom plate that moisture is imported to edge discharge outlet, described Edge filter is in ∠ shape, and is mounted on the fermenting cellar side wall, the trapezoidal shape of middle part filter, the middle part filtering Channel is equipped in the middle part of device, middle part filter bottom edge is middle part bottom plate, other sides are middle part filter screen, the middle part filter Four edges are equipped with reinforcing rod, and it is triangle deflector that the air duct upper end, which is equipped with section, the air duct lower end edge its Length direction is equipped at intervals with multiple gas outlets.

3. excrement sludge aerobic fermentation unit according to claim 1, it is characterised in that: the fermenting cellar bottom, which is equipped with, to be used In by turnover mechanism derived from excrement sludge, the turnover mechanism includes multiple turnover panels being disposed proximate to, in the turnover panel bottom The heart is equipped with overturning shaft, and the overturning both ends of the shaft is mounted on fermenting cellar two sides by bearing, and bias is set on the turnover panel side wall There is push rod, hinge bar A is hingedly connected on the push rod, all hinge bar A are articulated and connected with drive rod respectively, the drive Lever one end is connect with the overturning driver of driving turnover panel rotation, and the overturning driver and fermenting cellar are articulated and connected, described to turn over Turning driver is hydraulic cylinder or cylinder, is also hingedly connected with hinge bar B at the hinge bar A and drive rod articulated connection, is owned The hinge bar B is articulated and connected with fixed link respectively, and the fixed link both ends are connected on fermenting cellar.

4. excrement sludge aerobic fermentation unit according to claim 1, it is characterised in that: the exhaust outlet is in prism-frustum-shaped, The exhaust outlet arrival end is equipped with the particle filtering net of filtering particle, and the air duct is connect by intake stack with air-heater A, The exhaust outlet is connect by exhaust duct with air-introduced machine A, and the edge discharge outlet is connect by edge drainpipe with cesspool, The bottom discharge mouth is connect by bottom discharge pipe with cesspool.

5. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as described in claim 1, it is characterised in that: multilayer Aerobic fermentation system, including rack, air intake/outtake system and controller, the rack are equipped with feed mechanism and rake feeding mechanism, institute It states and is equipped with multiple excrement sludge aerobic fermentation units in rack from top to bottom, the feed mechanism and rake feeding mechanism cooperate excrement Sludge uniformly introduces in the fermenting cellar of excrement sludge aerobic fermentation unit described in top layer, counts from top to bottom at least described in one layer Excrement sludge aerobic fermentation unit is equipped with rabbling mechanism, and the rabbling mechanism includes being horizontally set on two neighboring middle part filtering Blender between device, the identical one end of all blenders are connected with stirring driver, and the air intake/outtake system is every layer The excrement sludge aerobic fermentation unit air feed and air draft, the feed mechanism, rake feeding mechanism, rabbling mechanism and air intake/outtake system It is connect respectively with controller.

6. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as claimed in claim 5, it is characterised in that: described Stirring driver includes the sprocket wheel that blender one end is arranged in, and the sprocket wheel is connected by chain, is also connected on the chain Drive sprocket, the drive sprocket are connect by transmission shaft with driving motor, and the driving motor is electrically connected with the controller, described Blender is dasher, counts excrement sludge aerobic fermentation unit described in the second layer from top to bottom and is equipped with the blender Structure.

7. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as claimed in claim 5, it is characterised in that: from upper The turnover mechanism in number at least one layer of excrement sludge aerobic fermentation unit is equipped with bottom filter mechanism, institute down Stating bottom filter mechanism includes several through-holes being arranged on turnover panel, and filtering excrement sludge water content is covered with above the through-hole Bottom filter screen, the bottom filter screen are mounted on turnover panel, and turnover panel bottom is equipped with water deflector, and the water deflector includes multiple Top is equipped with the inverted V type plate that can introduce the water into V-type plate, the inverted V type plate between the V-type plate of setting, two neighboring V-type plate It is connect with V-type plate both ends end by connecting rod, and there are gap, the lower sections of described water deflector one end between inverted V type plate and V-type plate Equipped with by deflector derived from the water in water deflector, the deflector is articulated and connected with the support plate being arranged in below fermenting cellar, And reset spring is connected between deflector and support plate, the support plate, which is equipped with, to be cooperated with deflector by bottom derived from water Discharge outlet.

8. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as claimed in claim 7, it is characterised in that: described V-type plate and inverted V type plate are greater than one end height of close bottom discharge mouth, the turnover panel two far from one end height of bottom discharge mouth End is connect with outermost V-type plate by connecting plate, and the deflector in the excrement sludge aerobic fermentation unit is arranged under it On the side wall of the excrement sludge aerobic fermentation unit of one layer of side.

9. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as described in claim 1, it is characterised in that: described Air intake/outtake system include blower B and air-introduced machine B, the blower B air outlet by pipeline respectively with every layer of excrement sludge aerobic Intake stack connection in fermentation unit, the corresponding intake stack of every layer of excrement sludge aerobic fermentation unit are equipped with control Switch, and heater, the air-introduced machine B are additionally provided on the corresponding intake stack of excrement sludge aerobic fermentation unit described in top layer It is connect respectively with exhaust duct by pipeline, the blower B, air-introduced machine B, control switch and heater are electrically connected with controller respectively It connects.

Alternatively, the air intake/outtake system is wind circulating system, the wind circulating system includes evaporator, the evaporator inlet point Not Tong Guo pipeline connect with the exhaust duct in excrement sludge aerobic fermentation unit described in every layer, the evaporator by pipeline with Condenser connection, the evaporator are connect by pipeline with cesspool, and compression is also connected between the evaporator and condenser Machine, is also connected with expansion valve and time condenser between the evaporator and condenser, the condensator outlet is connected with circulated air Dry hot-air is respectively fed to the air inlet of every layer of excrement sludge aerobic fermentation unit by pipeline by machine, the circulating fan In pipeline, control switch, institute, top layer are respectively equipped on the corresponding intake stack of every layer of excrement sludge aerobic fermentation unit It states and is additionally provided with heater, the evaporator, condenser, secondary condensation on the corresponding intake stack of excrement sludge aerobic fermentation unit Device, compressor and circulating fan, control switch and heater are connect with controller respectively.

10. the multilayer aerobic fermentation system of excrement sludge aerobic fermentation unit as described in claim 1, it is characterised in that: institute Stating feed mechanism includes promoting loader, and the promotion loader discharge port is correspondingly provided with spiral distributor, the screw material-distributing Device upper end is equipped with receiving hopper, and the spiral distributor end is arranged in fermenting cellar, and the rake feeding mechanism includes harrow frame, the rake Frame both ends are separately mounted on rake material chain, and every rake material chain both ends, which are separately installed with, harrows material sprocket wheel, and the two of the same end A rake material sprocket wheel is connected by rake material shaft, and rake is equipped in one of rake material shaft and expects drive sprocket, the rake material driving Sprocket wheel is connect by rake material drive chain with rake material driving motor, and the controller is PLC controller, the machine electrical control operation By PLC controller process control.