CN206089649U - Device of preliminary treatment before utilizing sewage to straw bundle fermentation - Google Patents

Abstract

The utility model discloses a device for pretreating straw bales by using sewage before fermentation. The device includes a sewage recovery pool and a feeding pool. Grooming wheel, the soaking tank is equipped with turning and pressing wheels and rollers arranged equidistantly in sequence. The end of the soaking tank is a gently rising slope. The width of the soaking tank is greater than the width of the straw bundle, and the depth of the soaking tank is greater than the height of the straw bundle. , the level of the feeding tank and the soaking tank is consistent, and it is located close to the control line of the lower edge of the roller in the soaking tank. The drain is located on the slope at the end of the soaking tank. The pump is lifted to the feeding pool; the device can completely soak the straw bales, and can adjust the displacement speed of the straw bales in the soaking tank to meet the soaking time requirement in the pretreatment process.

Description

A device for pretreatment of straw bales before fermentation using sewage

technical field

The utility model relates to a device for pre-fermenting straw bales, in particular to a device for pre-fermenting straw bales by using sewage and its application. Breeding sewage creates conditions for post-composting in the later stage, and belongs to a kind of agricultural special machinery and equipment and its application.

Background technique

With the development of rural economy and agricultural intensification, straw has become another major source of waste in rural areas. The annual "straw burning" problem plagues many parts of China. A large amount of wheat, corn and other stalks are burned in the field, which produces a lot of thick smoke, which not only becomes the bottleneck of rural environmental protection, but even becomes the chief culprit that affects the urban environment. Straw burning is not because there are too many straws, but because they are not fully utilized. According to relevant statistics, my country, as a large agricultural country, can produce more than 700 million tons of straw every year, which becomes "waste" that is "not very useful" but must be disposed of. In this case, it is completely handled by the farmers, and a large number of burnings have occurred. Therefore, it is an effective method to use straw to absorb sewage and convert it into fertilizer. The utility model mainly utilizes the bundled straws and puts them in the sewage to soak and absorb the sewage. However, due to the low density and large volume of the bundled straws, manual soaking is time-consuming and laborious, and it is almost impossible to manually soak a large amount of straws. The utility model utilizes an automatic mechanical device to soak the straw into the sewage to fully absorb the sewage, and then can be used for post-stage composting.

With the development of livestock and poultry breeding industry, the amount of animal excrement is increasing, and livestock and poultry manure has become an important source of pollution, which seriously affects the safety of the ecological environment; it is effective to reuse livestock and poultry manure and breeding sewage in a harmless manner. One of the ways, especially the anaerobic fermentation of livestock and poultry waste to produce biogas, and the reuse of biogas slurry and residue in farmland, can obtain biomass energy while realizing the disposal and utilization of breeding waste. Therefore, the technology of combining agriculture and animal husbandry with the biogas project as the link has received the attention and attention of the whole society, and has been vigorously promoted and applied.

As of 2014, there were 100,000 various biogas projects across the country, with an annual output of 18 billion cubic meters of biogas and nearly 600 million tons of biogas slurry and biogas residue per year. In the actual engineering application of breeding-planting, due to the large amount and continuity of sewage discharge, the conventional method of using sewage is generally used as fertilizer to return to the field, but the water and fertilizer used for farmland planting are seasonal and quantitative; Sewage cannot be used in farmland in a timely manner; therefore, more outlets are needed using sewage or biogas slurry.

For the two agricultural by-products of straw and sewage, there are currently utility model patents on straw absorbing sewage for fermentation.

For example: a utility model patent, a dry anaerobic fermentation device that uses recycled sewage to spray straw (CN104328041 A). The utility model designs an anaerobic fermentation tank with a spray head, a liquid discharge pipe and an air outlet inside, and straw is installed inside, and the sewage is sprayed from the top of the fermentation tank onto the straw by using a sewage backflow pump. Using straw and sewage to generate biogas under anaerobic conditions. The utility model recovers sewage through the traditional anaerobic fermentation method, which has the advantages of fast speed and automatic control; the disadvantage is that the limited processing capacity is limited by the tank body, and the cost is expensive and the applicability is poor. In addition, the device is used to produce sewage For the purpose of application, there is nothing that can be done for aquaculture waste or domestic sewage.

Another example, in order to prevent secondary pollution to the environment during the utilization of sewage, a utility model patent, a method for treating sewage by using modified fly ash (CN 102775026 A), was modified to use modified fly ash to treat sewage, First, the sewage biogas residue is separated, and then a certain amount of modified fly ash is added to the sewage, which is fully reflected and then aerated by SBR to reduce the pollution factor in the sewage to meet the discharge standard. This method belongs to the utility model of sewage purification, and the basic principle of this design is quite different. Utility model patent, straw and sewage synchronous returning operation method and equipment (CN104255202 A), the crop straw and root stubble are crushed in the field and scattered on the field, and the sewage produced after the anaerobic fermentation of biomass is sprayed on the On the broken straw and root stubble, the plow is used to level the land, and the broken straw, root stubble and sewage are buried and covered in the soil, and finally the surface of the field is compacted and leveled. This utility model belongs to field utilization, which is quite different from sewage recycling.

Another example, in order to prevent secondary pollution of kitchen sewage in domestic sewage, a utility model patent, a straw treatment method for absorbing grease in kitchen sewage (CN104445513A), crushes straw to form particles, adds flocculant and mixes The straw flocculation particles are made into straw flocculation particles; the straw flocculation particles are put into the kitchen sewage, so that the organic matter in the sewage is adsorbed on the straw flocculation particles to form oil-attached particles; the oil-attached particles are separated and collected for subsequent biological fermentation treatment. The utility model solves the problems that the treatment of high-concentration kitchen sewage is difficult and costly, and the nutritional balance is poor when the kitchen sewage and straw are separately fermented.

In addition, there is a method of co-incineration, disposal and resource utilization of crop straw and sewage sludge (CN200910100285.5), which adopts the following process: adding straw powder and water-containing Sludge at a rate of 70-85% by weight, and then add an appropriate amount of heavy metal stabilizer to stir and condition. The stirring time is 15-30min, and the pH is 6-9. After washing and pressing, the water content of the mixture of straw and sludge will drop. To 50% to 70%, after low-temperature drying, the mixture of straw powder and sludge can be directly burned as coal alternative energy for heat generation, and the residue after incineration and incineration fly ash can be used as cement raw materials to produce ecological cement. The utility model provides a reasonable way for the co-disposal of straw and sludge, and realizes harmless, stable and resourceful treatment of waste in the whole process.

It can be seen from the above patents that in the face of environmental pollution caused by a large amount of straw, aquaculture sewage, and domestic sewage, although people have adopted many methods and measures, each method has its limitations, and the labor intensity is relatively large. Agricultural machinery with a high degree of automation.

Contents of the invention

The purpose of the utility model is to provide a special equipment and its application in view of the lack of an agricultural mechanical equipment with a high degree of automation when using sewage to pretreat straw bales before fermentation.

The purpose of this utility model is achieved in that:

A device for pretreatment of straw bales by using sewage before fermentation, including a sewage recovery tank and a feeding tank, one end of the feeding tank is provided with a soaking tank, and a pair of guide wheels are provided at the intersection of the soaking tank and the feeding tank, and the soaking tank It is equipped with turning and pressing wheels and rollers arranged equidistantly in sequence. The end of the soaking tank is a gently rising slope. The width of the soaking tank is greater than the width of the straw bale, and the depth of the soaking tank is greater than the height of the straw bale. The horizontal plane of the tank is consistent, located at the control line next to the lower edge of the roller in the soaking tank, the drain is located on the slope at the end of the soaking tank, the water level of the sewage recovery tank is lower than that of the feeding tank, and the sewage in the sewage recovery tank is lifted to the feeding tank by a pump pool.

Further, in the device for using sewage to pretreat straw bales before fermentation described in the utility model, the end where the feeding tank and the soaking tank meet is in a figure-eight constriction, and the feeding tank is docked with the soaking tank through the necking end; the roller The length of the soaking tank below is at least two meters.

Further, in the device for pretreatment of straw bales by using sewage in the utility model before fermentation, the feed pool is a farm feed pool; motor.

Further, in the device for pretreating straw bales with sewage before fermentation described in the utility model, the water inlet of the feeding tank is located opposite to the intersection with the soaking tank, and the sewage entering the feeding tank pushes the straw bundles to drift toward the soaking tank.

Further, in the device for pretreating straw bales with sewage before fermentation described in the utility model, the turning and pressing wheel is adjacent to the dredging wheel, and at least three sets of shift forks are arranged on the outer edge of the turning and pressing wheel, which are evenly distributed around the turning and pressing wheel, each The group shift fork contains at least three forks that are evenly arranged along the axial direction of the rotary pressure wheel.

An application of a device for pretreatment of straw bales before fermentation by using sewage as described in the utility model, characterized in that the straw bales are thrown into the feeding pool and float to the vicinity of the intersection of the feeding pool and the soaking tank and are guided by a pair of dredges. The straw bundle is clamped by the roller, pressed into the soaking tank by the fork around the rotary pressure wheel and sent to the bottom of the roller. Under the forced pressure of the roller, the straw bundle is soaked below the water level and slowly moves forward. After reaching the end point, it rises along the slope and is recycled for use Post compost fermentation.

According to the application of the utility model, the residence time of the straw bundle in the bubble tank is controlled between 30 seconds and 2 minutes by adjusting the rotating speed of the turning wheel, changing the soaking time and pushing speed of the straw bundle.

The utility model has the advantages that, since one end of the feeding pool is provided with a soaking tank, a pair of dredging wheels are provided at the junction of the soaking tank and the feeding tank, and the soaking tank is provided with turning and pressing wheels and rollers arranged equidistantly in order, The end of the soaking tank is a gently rising slope. The width of the soaking tank is greater than the width of the straw bale, and the depth of the soaking tank is greater than the height of the straw bale. , these geometric features can fully realize the complete immersion of the straw bales. Since the sewage in the feeding tank is lifted from the sewage recovery tank by the pump and then input, it returns to the sewage recovery tank from the outlet on the slope at the end of the soaking tank to form flowing running water. The straw bales can completely rely on the flow direction of the sewage and can pass through The lifting water volume of the pump or the rotating speed of the rotary pressure wheel adjusts the displacement speed of the straw bales in the soaking tank to meet the soaking time requirement in the pretreatment process. Since one end of the feeding pool and the soaking tank has a figure-eight constriction, and the end of the constriction is connected with the soaking tank, on the one hand, the straw bales in the feeding tank can be guided to the soaking tank, and at the same time, the intersection of the feeding tank and the soaking tank can be increased The flow rate is high, which is beneficial to the straw bales being clamped by the dredging wheel, and then pressed into the soaking tank by the fork around the turning wheel and sent to the bottom of the roller. Since the end of the soaking tank is a gently rising slope, the soaked straw bales can move upward along the slope under the push of the subsequent straw bales by means of water flow and buoyancy. When the grooming wheel and the turning wheel are equipped with matching drive motors, they can also provide a slow displacement thrust for the straw bales entering the soaking tank together with the flow rate of the sewage in the soaking tank, which is conducive to pushing the straw bales on the slope to continue to move upwards .

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

FIG. 2 is a top view of FIG. 1 .

In the figure: 1. Feeding pool, 2. Soaking tank, 3. Grooming wheel, 4. Turning and pressing wheel, 5. Roller, 6. Outlet, 7. Slope, 8. Shift fork, 9. Straw bundle.

detailed description

The accompanying drawings disclose the basic structure of the embodiment of the utility model without limitation, and the embodiment of the utility model will be further described below in conjunction with the accompanying drawings.

As can be seen from Fig. 1 and Fig. 2, the utility model comprises a feed tank 1 of a sewage injection port, one end of the feed tank 1 is provided with a soaking tank 2, and a pair of dredging wheels 3 are provided at the intersection of the soak tank 2 and the feed tank 1, Soaking tank 3 is provided with rotary press wheel 4 and rollers 5 arranged equidistantly in sequence. The end of soaking tank 2 is a slope 7 that rises gently. The width of soaking tank 2 is greater than the width of straw bundle 9, and the depth of soaking tank 2 is Greater than the height of the straw bale 9, the level of the feeding pool 1 and the soaking tank 2 is the same, and is located close to the control line of the lower edge of the roller 5 in the soaking tank 2, and the outlet 6 is located on the slope 7 at the end of the soaking tank 2.

In this embodiment, one end of the feeding tank 1 is connected to the soaking tank 2 through a figure-eight constriction; the length of the soaking tank 2 below the roller 5 is 2 meters. The turning and pressing wheel 4 is adjacent to the dredging wheel 3, and the outer edge of the turning and pressing wheel 4 is provided with multiple sets of shift forks 8, which are evenly distributed around the turning and pressing wheel 4, and each set of shift forks 8 contains at least three Arranged forks.

During specific implementation, a sewage recovery tank is also equipped, the water level of the sewage recovery tank is lower than the feed tank 1, and the sewage in the sewage recovery tank is lifted to the entrance of the feed tank 1 by a pump, and then returned to the sewage recovery tank by the outlet 6 to form Circulating running water, the entrance of the feeding pool 1 is located opposite to the soaking tank 2. The pair of dredging wheels 3 and the turning and pressing wheels 4 are all provided with matching drive motors.

In the use of the utility model, after the straw bundle 9 is thrown into the feeding pool 1, it floats to the feeding pool 1 under the promotion of circulating running water, and is clamped by a pair of dredging wheels 3 near the intersection with the soaking tank 2, and is turned The shift fork 8 around the pressure wheel 3 is pressed into the soaking tank 2 and sent to the bottom of the roller 5. Under the forced pressure of the roller 5, the straw bundle 9 is soaked below the water level and slowly moves forward. After reaching the end point, it rises along the slope 7 and is recovered. For post-composting fermentation.

In actual use, the rotating speed set by the rotary pressure wheel 4 and the lifting water volume of the pump can drive the straw bundle 9 to move slowly in the soaking tank 2, and the residence time of the straw bundle 9 in the soaking tank 2 can be controlled at 30 seconds to 2 minutes.

Claims (5)

1. device of a kind of utilization sewage to pretreatment before straw bundle fermentation, including sewage recovery pond and enter material pond, its feature exists In, entering material pond one end and be provided with soaking compartment, soaking compartment is provided with a pair and dredges wheel with the river conjunction for entering material pond, and soaking compartment is provided with and turns pressure The roller bearing of wheel and sequentially equidistant arrangement, the end of soaking compartment is the gentle slope for rising, and the width of soaking compartment is more than straw bundle Width, more than the height of straw bundle, it is consistent with the horizontal plane of soaking compartment to enter material pond, in being located close to soaking compartment for the depth of soaking compartment The control line of roller bearing lower edge, discharge outlet is located on the slope of soaking compartment end, and the water level of sewage recovery pond is less than into material pond, sewage The sewage of recovery pond is lifted to entering material pond by pump.

2. utilization sewage according to claim 1 is to the front device for pre-processing of straw bundle fermentation, it is characterised in that enter material pond The one end crossed with soaking compartment is entered material pond and is docked with soaking compartment by necking end in splayed necking；Immersion below roller bearing Slot length is at least two meters.

3. utilization sewage according to claim 1 is to the front device for pre-processing of straw bundle fermentation, it is characterised in that described Enter material pond and enter material pond for plant；Described a pair dredge wheel and turn the motor that pinch roller is equipped with matching.

4. the device pre-processed before the utilization sewage according to claim 1 or 2 or 3 ferments to straw bundle, it is characterised in that Enter the water inlet of material pond positioned at the opposite with soaking compartment river conjunction.

5. utilization sewage according to claim 4 is to the front device for pre-processing of straw bundle fermentation, it is characterised in that turn pinch roller Close to wheel is dredged, turn the outer rim of pinch roller at least provided with three groups of shift forks, they are evenly distributed on and turn pinch roller periphery, and every group of shift fork is at least Turn the axially evenly distributed jaw of pinch roller containing three edges.