CN112876015B - Livestock and poultry breeding manure desanding method - Google Patents
Livestock and poultry breeding manure desanding method Download PDFInfo
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- CN112876015B CN112876015B CN202110085889.8A CN202110085889A CN112876015B CN 112876015 B CN112876015 B CN 112876015B CN 202110085889 A CN202110085889 A CN 202110085889A CN 112876015 B CN112876015 B CN 112876015B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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Abstract
The invention discloses a livestock and poultry breeding manure desanding method, which is implemented according to the following steps: step 1, pouring the excrement into an excrement receiving device, and uniformly mixing the excrement by using the excrement receiving device; step 2, crushing the feces uniformly mixed in the step 1 by a feces crushing device; step 3, spraying the excrement crushed in the step 2 into a desanding device in a jet flow mode through a first conveying pump, and separating large sand and stone in the excrement in the desanding device; step 4, injecting the excrement in the desanding device into an excrement buffer pool through a second conveying pump, completing the separation of smaller sand stones in the excrement buffer pool, and then discharging the excrement separated by the smaller sand stones through a third conveying pump; step 5, collecting the sand and stone separated by the sand removing device and the dung and dirt buffer tank through a sand liquid storage tank; and 6, taking the feces supernatant standing in the sand liquid storage pool as a cleaning liquid, and pumping the feces supernatant to a feces receiving device through a fourth delivery pump.
Description
Technical Field
The invention belongs to the technical field of livestock and poultry breeding manure treatment, and particularly relates to a livestock and poultry breeding manure desanding method.
Background
In recent years, along with the increasing strictness of environmental protection requirements, people pay more attention to the collection, harmless and resource treatment and utilization of the feces generated by livestock and poultry breeding. Meanwhile, with the rapid development of livestock and poultry breeding industry in China, the breeding mode is rapidly changed, and the traditional small-scale, distributed and high-pollution breeding mode is changed into a large-scale, intensive, low-pollution and even near-zero-pollution breeding mode.
In the process of breeding cattle, mushroom dregs, sand, sandy soil, rice hulls and the like are frequently used as cattle bedding materials, wherein the sand can inhibit microbial flora, has good water permeability and is not easy to harden, and the limb hoofs of cows cannot be damaged, so that over 50 percent of cattle raising enterprises adopt sand materials as cattle beds, and the cattle manure inevitably contains a lot of sand.
In chicken feeding, large granular sand is often fed in an amount to facilitate digestion of the chicken. Meanwhile, the feed also contains impurities such as stone powder, calcium hydrogen phosphate and the like, the impurities with small particle sizes cannot be completely digested by the chickens, can be discharged along with excrement, and can be combined with mucus in the digestive tract in the digestion process, so that the removal difficulty is increased, and the chicken excrement has high solid content which is generally 28-33%.
At present, the most energy-saving and environment-friendly method for treating chicken manure and cow manure in the breeding industry is to produce biogas through anaerobic fermentation, and the fermented slag is returned to the field as fertilizer. On one hand, the sand can block a feeding pipeline of subsequent fermentation process equipment, and wear equipment such as a feeding pump, on the other hand, the sand can cause serious sand deposition of a hydrolysis tank, a fermentation tank and the like, so that the cleaning workload is increased, and normal fermentation gas production can be influenced in serious conditions. Meanwhile, the livestock and poultry manure contains a plurality of impurities such as iron wires, cloth strips and the like brought out from the farm. Failure to effectively remove these impurities can easily cause clogging of the shredder, feed pump and feed lines.
At present, the methods for removing sand in domestic biogas projects mainly comprise a sand settling channel method, a folded plate sand settling channel method, a lifting type sand removing method, a shaftless spiral sand removing method and the like, but the methods have poor adaptability to livestock and poultry breeding excrement with large solid content fluctuation range and high sand content, and often cannot achieve ideal sand removing effect.
Disclosure of Invention
The invention aims to provide a livestock and poultry breeding excrement desanding method, which solves the problem that sand and stones in excrement are difficult to separate.
In order to achieve the purpose, the invention adopts the technical scheme that: a livestock and poultry breeding manure desanding method is implemented according to the following steps:
step 2, stirring and crushing the feces uniformly mixed in the step 1 by a feces crushing device;
step 3, injecting the feces crushed in the step 2 into a desanding device in a jet flow mode through a first conveying pump, and separating large-particle-size sand from large-particle-size sand in the feces in the desanding device;
step 4, injecting the excrement in the desanding device into an excrement buffer pool through a second conveying pump, completing the separation of sand stones with smaller particle sizes in the excrement buffer pool, and then discharging the excrement separated by the sand stones with smaller particle sizes through a third conveying pump;
and 6, pumping the supernatant of the sand liquid storage pool to a feces receiving device, wherein the supernatant is used as a circulating liquid to provide flushing liquid for the feces receiving process, so that waste and use of water resources are reduced.
The technical scheme of the invention also has the following characteristics:
further, in the step 1, a receiving device for feces and sewage is used, which comprises:
the bottom of the sealed container is of a conical structure, a support is arranged on the inner side of the bottom of the sealed container, a feed inlet is formed in the top of the sealed container, a sealing cover is arranged at the feed inlet, a discharge outlet is formed in the bottom of the sealed container, a grid is arranged in the sealing cover, and the grid is used for filtering large-block-size sand stones in excrement;
a first agitator, the first agitator comprising:
the motor is arranged at the top of the sealed container;
the upper end of the stirring shaft is connected with the driving end of the motor, the lower end of the stirring shaft is arranged in the bracket through a bearing, and the lower end of the stirring shaft is rotatably arranged in the bracket;
the stirring blades are vertically arranged on the stirring shaft;
the stirring of the manure receiving device is implemented as follows: large-block particle size sand stones in the excrement are filtered through the grating, the stirring shaft is driven to rotate through the motor, a plurality of stirring blades distributed on the stirring shaft are used for stirring the excrement at all positions in the sealed container, and the uniform mixing of materials is completed.
Further, in the step 3, a sand removing device is used, which comprises:
the side part of the box body is provided with a feeding hole and a discharging hole, and the bottom of the box body is provided with a grit chamber;
the movable baffle is obliquely arranged in the box body, and the grit chamber is positioned below the side of the movable baffle;
the first spiral conveyor is arranged in the grit chamber;
the sand removing device specifically separates sand and stone as follows: the first conveying pump sprays excrement into the box body in a jet flow mode, large gravel in the excrement is blocked by the movable baffle plate, falls into the grit chamber, and is conveyed into the sand liquid storage pool through the first screw conveyer.
Further, in the step 4, the fecal sewage buffer pool comprises:
the side part of the buffer tank is provided with a feed inlet and a discharge outlet, the bottom of the buffer tank is provided with a step surface, and the bottom of the buffer tank positioned below the step surface side is provided with a second screw conveyor;
a second agitator disposed within the buffer pool;
the sand and stone separation of the fecal sewage buffer pool is as follows: the second stirrer stirs the excrement, and the gravels with larger density and particle size in the excrement fall into the bottom of the buffer pool, fall onto the second screw conveyor through the step surface, and are conveyed to the sand liquid storage pool through the second screw conveyor.
Further, in the step 5, the sand liquid storage tank comprises a storage tank, a liquid inlet and a liquid outlet are arranged at the top of the storage tank, and a cover plate is arranged at the liquid inlet; and a liquid return port is formed in the top of the sealed container and communicated with a liquid outlet of the storage pool through a fourth delivery pump, so that the upper-layer feces and sewage liquid in the storage pool is recycled.
Further, in the step 6, the supernatant of the sand liquid storage tank is pumped to the fecal sewage receiving device through a fourth delivery pump and used as washing water to wash a fecal sewage truck and a grating on a sealing cover in the fecal sewage receiving process, so that the use amount of process water is reduced.
The invention has the beneficial effects that: the livestock and poultry breeding excrement desanding method has the advantages of strong raw material adaptability, high desanding efficiency, improvement of the utilization efficiency of subsequent excrement treatment equipment, reduction of the abrasion degree of the equipment, frequent maintenance and the like, and can effectively separate sand and stone in the excrement.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a method for removing sand from livestock and poultry breeding manure according to the invention;
FIG. 2 is a schematic structural view of a receiving device for feces;
FIG. 3 is a schematic view of the mechanism of the desanding device;
FIG. 4 is a schematic structural diagram of a fecal sewage buffer pool;
fig. 5 is a schematic structural diagram of a sand liquid storage tank.
In the figure: 1. the system comprises a feces receiving device, 101, a sealed container, 102, a sealing cover, 103, a motor, 104, a stirring shaft, 105, a stirring blade, 106, a support, 107, a liquid return port, 2, a feces crusher, 3, a first conveying pump, 4, a sand removal device, 401, a box body, 402, a movable baffle plate, 403, a first spiral conveyor, 404, a sand settling tank, 5, a second conveying pump, 6, a feces buffer tank, 601, a buffer tank, 602, a second spiral conveyor, 603, a second stirrer, 7, a third conveying pump, 8, a fourth conveying pump, 9, a sand liquid storage tank, 901, a storage tank, 902, a cover plate, 903 and a liquid outlet.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings, so that how to implement the technical features of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
As shown in figure 1, the livestock and poultry breeding manure desanding method is implemented according to the following steps:
step 2, crushing the feces uniformly mixed in the step 1 by a feces crushing device 2;
step 3, spraying the excrement crushed in the step 2 into a desanding device 4 in a jet flow mode through a first conveying pump 3, and separating large sand and stone in the excrement in the desanding device 4;
step 4, injecting the excrement in the desanding device 4 into an excrement buffer pool 6 through a second conveying pump 5, completing the separation of smaller sand stones in the excrement buffer pool 6, and then discharging the excrement separated by the smaller sand stones through a third conveying pump 7;
and 5, collecting the sand and stone separated by the sand removing device 4 and the dung buffer pool 6 through a sand liquid storage pool 9.
And 6, conveying the supernatant in the sand liquid storage tank 9 to the front end of the fecal sewage receiving device 1 through a fourth conveying pump 8, and using the supernatant as washing water.
Wherein:
the excrement receiving device 1 is used for mixing excrement and sewage;
a feed inlet of the excrement crusher 2 is communicated with a discharge outlet of the excrement receiving device 1;
a feed inlet of the desanding device 4 is communicated with a discharge outlet of the dung crusher 2 through a first conveying pump 3;
a feed inlet of the fecal sewage buffer pool 6 is communicated with a discharge outlet of the desanding device 4 through a second conveying pump 5, and a discharge outlet of the fecal sewage buffer pool 6 is communicated with the outside through a third conveying pump 7;
a sand liquid storage tank 9, wherein a liquid inlet of the sand liquid storage tank 9 is respectively communicated with a sand outlet of the desanding device 4 and a sand outlet of the fecal sewage buffer tank 6.
During operation, the excrement with grit gets into from the feed inlet of excrement and urine receiving arrangement 1, the excrement and urine gets into excrement and urine breaker 2 after fully stirring in excrement and urine receiving arrangement 1, later get into from the feed inlet of sand removal device 4 under the effect of first delivery pump 3, separate out the grit of bold particle size from the excrement and urine in sand removal device 4, later the excrement and urine gets into from the feed inlet of excrement and urine buffer pool 6 under the effect of second delivery pump 5, the grit of less particle size relatively accomplishes the separation in excrement and urine buffer pool 6, the excrement and urine will be discharged from the discharge gate of excrement and urine buffer pool 6 under the effect of third delivery pump 7. The sand separated in the sand removing device 4 and the fecal sewage buffer tank 6 is finally discharged into the sand liquid storage tank 9 through respective sand discharge ports.
As shown in fig. 2, in step 1, a receiving device 1 for receiving manure is used, which comprises:
the bottom of the sealed container 101 is of a conical structure, a support 106 is arranged on the inner side of the bottom of the sealed container 101, a feed inlet is formed in the top of the sealed container 101, a sealing cover 102 is arranged at the feed inlet, a discharge outlet is formed in the bottom of the sealed container 101, and a grid is arranged in the sealing cover 102 and used for filtering large-block-size sand in excrement;
a first agitator, the first agitator comprising:
the motor 103, the motor 103 is set up in the top of the said sealed container 101;
the upper end of the stirring shaft 104 is connected with the driving end of the motor 103, the lower end of the stirring shaft 104 is arranged in the bracket 106 through a bearing, and the lower end of the stirring shaft is rotatably arranged in the bracket 106;
a plurality of stirring vanes 105, the plurality of stirring vanes 105 being arranged vertically on the stirring shaft 104;
the stirring of the fecal sewage receiving device 1 is specifically implemented as follows: large-particle-size sand stones in the excrement are filtered through the grating, the stirring shaft 104 is driven to rotate through the motor 103, and a plurality of stirring blades 105 distributed on the stirring shaft 104 stir the excrement in each position in the sealed container 101 to complete uniform mixing.
As shown in fig. 3, in step 3, the sand removing device 4 used includes:
a feed inlet and a discharge outlet are formed in the side part of the box body 401, and a grit chamber 404 is formed in the bottom of the box body 401;
the movable baffle 402 is obliquely arranged in the box body 401, and the grit chamber 404 is positioned below the movable baffle 402;
a first screw conveyor 403, the first screw conveyor 403 being disposed in the grit chamber 404;
the sand removing device 4 specifically separates sand and stone as follows: the first conveying pump 3 sprays the excrement into the box body 401 in a jet flow mode, large sand in the excrement is blocked by the movable baffle 402, falls into the grit chamber 404 and is conveyed into the sand liquid storage pool 4 through the first screw conveyor 403.
As shown in fig. 4, in step 4, the fecal sewage buffer pool 6 comprises:
a feed inlet and a discharge outlet are arranged on the side part of the buffer tank 601, a step surface is formed at the bottom of the buffer tank 601, and a second screw conveyor 602 is arranged at the bottom of the buffer tank 601 below the side of the step surface;
a second stirrer 603, wherein the second stirrer 603 is arranged in the buffer tank 601;
the sand and stone separation of the manure buffer pool 6 is as follows: the second stirrer 603 stirs the dung, and the sand with higher density in the dung falls into the bottom of the buffer tank 601, falls onto the second screw conveyor 602 through the step surface, and is conveyed into the sand liquid storage tank 9 through the second screw conveyor 602.
As shown in fig. 5, in step 5, the sand-liquid storage tank 9 includes a storage tank 901, a liquid inlet and a liquid outlet 903 are disposed at the top of the storage tank 901, and a cover plate 902 is disposed at the liquid inlet; the top of the sealed container 101 is provided with a supernatant liquid return port, and the supernatant liquid return port is communicated with a liquid outlet 903 of the storage pool 901 through a fourth delivery pump 8, so that the supernatant liquid of excrement in the storage pool is recycled.
In the step 6, the supernatant is conveyed to the fecal sewage receiving device 1 through the fourth conveying pump 8, and is used as washing water to wash the fecal sewage truck and the grating on the sealing cover.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A livestock and poultry breeding manure desanding method is characterized by comprising the following steps:
step 1, pouring the excrement into an excrement receiving device (1), and uniformly mixing the excrement by using the excrement receiving device (1);
step 2, crushing the feces uniformly mixed in the step 1 by a feces crushing device (2);
step 3, spraying the excrement crushed in the step 2 into a desanding device (4) in a jet flow mode through a first conveying pump (3), and separating large sand and stone in the excrement in the desanding device (4);
step 4, injecting the excrement in the sand removing device (4) into an excrement buffer pool (6) through a second conveying pump (5), completing the separation of smaller sand stones in the excrement buffer pool (6), and then discharging the excrement separated by the smaller sand stones through a third conveying pump (7);
step 5, collecting the sand and stone separated by the sand removing device (4) and the dung buffer pool (6) through a sand liquid storage pool (9);
step 6, taking the feces supernatant which is kept stand in the sand liquid storage pool (9) as cleaning liquid, and pumping the feces supernatant to the feces receiving device (1) through a fourth delivery pump (8);
in step 1, a receiving device (1) for receiving manure is used, comprising:
the bottom of the sealed container (101) is of a conical structure, a support (106) is arranged on the inner side of the bottom of the sealed container (101), a feed inlet is formed in the top of the sealed container (101), a sealing cover (102) is arranged at the feed inlet, a discharge outlet is formed in the bottom of the sealed container (101), a grid is arranged in the sealing cover (102), and the grid is used for filtering large-block sand and stones in excrement;
a first agitator, the first agitator comprising:
a motor (103), wherein the motor (103) is arranged at the top of the sealed container (101);
the upper end of the stirring shaft (104) is connected with the driving end of the motor (103), the lower end of the stirring shaft (104) is arranged in the bracket (106) through a bearing, and the lower end of the stirring shaft is rotatably arranged in the bracket (106);
a plurality of stirring blades (105), wherein the plurality of stirring blades (105) are vertically arranged on the stirring shaft (104);
the stirring of the manure receiving device (1) is implemented as follows: large-particle-size sand stones in the excrement are filtered through a grating, a stirring shaft (104) is driven to rotate through a motor (103), and a plurality of stirring blades (105) distributed on the stirring shaft (104) are used for stirring the excrement at each position in a sealed container (101) to complete uniform mixing;
in said step 3, a desanding device (4) is used comprising:
the sand-settling tank comprises a tank body (401), wherein a feed inlet and a discharge outlet are formed in the side part of the tank body (401), and a sand-settling tank (404) is arranged at the bottom of the tank body (401);
the movable baffle (402) is obliquely arranged in the box body (401), and the grit chamber (404) is positioned below the movable baffle (402);
a first screw conveyor (403), the first screw conveyor (403) being disposed within the grit chamber (404);
the sand removing device (4) is used for separating sand and stone: the first conveying pump (3) sprays excrement into the box body (401) in a jet flow mode, large sand and stones in the excrement are blocked by the movable baffle (402), fall into the grit chamber (404), and are conveyed into the sand liquid storage pool (9) through the first screw conveyor (403);
in the step 4, a manure buffer pool (6) is used, which comprises:
the device comprises a buffer tank (601), wherein a feed inlet and a discharge outlet are formed in the side part of the buffer tank (601), a step surface is formed at the bottom of the buffer tank (601), and a second screw conveyor (602) is arranged at the bottom of the buffer tank (601) below the side of the step surface;
a second agitator (603), the second agitator (603) being disposed within the buffer tank (601);
the sand and stone separation of the manure buffer pool (6) is as follows: the second stirrer (603) stirs the excrement, the sand with higher density in the excrement falls into the bottom of the buffer pool (601), falls onto the second screw conveyor (602) through the step surface, and is conveyed into the sand liquid storage pool (9) through the second screw conveyor (602).
2. The livestock and poultry breeding manure desanding method according to claim 1, characterized in that in the step 5, the sand liquid storage tank (9) comprises a storage tank (901), the top of the storage tank (901) is provided with a liquid inlet and a liquid outlet (903), and the liquid inlet is provided with a cover plate (902); the top of the sealed container (101) is provided with a liquid return port (107), the liquid return port (107) is communicated with a liquid outlet (903) of the storage pool (901) through a fourth conveying pump (8), and recycling of upper-layer excrement liquid in the storage pool is achieved.
3. The livestock and poultry breeding manure desanding method according to the claim 2, characterized in that in the step 6, the supernatant is transported to the manure receiving device (1) through a fourth transportation pump (8) and used as washing water to wash the grids on the manure car and the sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085889.8A CN112876015B (en) | 2021-01-22 | 2021-01-22 | Livestock and poultry breeding manure desanding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085889.8A CN112876015B (en) | 2021-01-22 | 2021-01-22 | Livestock and poultry breeding manure desanding method |
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| Publication Number | Publication Date |
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| CN112876015A CN112876015A (en) | 2021-06-01 |
| CN112876015B true CN112876015B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110085889.8A Active CN112876015B (en) | 2021-01-22 | 2021-01-22 | Livestock and poultry breeding manure desanding method |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4360727B2 (en) * | 2000-02-01 | 2009-11-11 | 三井造船環境エンジニアリング株式会社 | Pretreatment method for human waste treatment facility |
| MXJL00000011A (en) * | 2000-08-11 | 2002-08-29 | I Castaneda Escorza Simon | Automatic sand extraction and washing system in municipal. |
| CN102603137A (en) * | 2012-03-17 | 2012-07-25 | 山东民和生物科技有限公司 | Livestock manure stirring and sand and impurity removing device |
| CN203904165U (en) * | 2014-06-03 | 2014-10-29 | 青岛格瑞盛环保工程有限公司 | Excrement sand removing device of livestock breeding farm |
| CN205874191U (en) * | 2016-08-05 | 2017-01-11 | 天津市灥嘉科技发展有限公司 | Dirty solid -liquid separation pond of high -efficient excrement |
| CN207615006U (en) * | 2017-10-25 | 2018-07-17 | 北京金宇蓝天生态能源科技开发有限公司 | A kind of waste desanding device |
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