Livestock and poultry manure anaerobic fermentation treatment device and treatment process thereof

Abstract

The invention relates to the technical field of anaerobic fermentation, in particular to a livestock and poultry manure anaerobic fermentation treatment device and a treatment process thereof.The livestock and poultry manure anaerobic fermentation treatment device comprises a main body cylinder, and a cylinder wall collecting mechanism for conducting anaerobic heating and stirring on liquid and collecting impurities is arranged at the lower end of the main body cylinder and comprises a first cavity formed in the lower end of the main body cylinder; a fixing plate is fixedly connected to the lower end of the body cylinder, a transmission shaft of the motor penetrates through the fixing plate, a fixing rod is fixedly connected to the transmission shaft end of the motor and rotatably penetrates through the body cylinder, a plurality of rotating rods are arranged on the side face of the fixing rod, and a liquid level collecting mechanism for collecting liquid level suspended matter is arranged at the upper end of the fixing rod. The second fixing body is driven by the motor to rotate along the inner wall of the main body cylinder, sewage mixed with impurities flows into the second limiting body while rotating, the impurities are collected in the second limiting body through the second filter membrane, and therefore fine suspended impurities in the sewage can be removed.

Description

Technical Field

[0001] The invention relates to the technical field of anaerobic fermentation, and in particular to an anaerobic fermentation treatment device for livestock and poultry manure and a treatment process thereof. Background Art

[0002] Anaerobic fermentation of livestock and poultry manure is a biological treatment technology, which is mainly used to treat manure and sewage generated in the process of livestock and poultry breeding. This treatment method uses anaerobic microorganisms to degrade organic matter under anaerobic conditions to generate biogas and other by-products. The process of anaerobic fermentation of livestock and poultry manure includes steps such as livestock and poultry manure pretreatment, anaerobic fermentation and gas collection. Among them, livestock and poultry manure pretreatment is a very important step. In the prior art, solid manure and liquid in livestock and poultry manure are generally separated by a filter, and the solid manure is composted and the liquid is anaerobic fermented.

[0003] In the prior art, when pre-treating livestock and poultry manure, the solid-liquid separation of livestock and poultry manure is generally only performed through a filter screen to filter out the solid feces and impurities in the livestock and poultry manure. However, before the actual fermentation, a large amount of colloidal suspended matter remains in the liquid. If it is not removed in time during pre-treatment, it is easy to clog the fermentation barrel. In addition, the impurity colloidal suspended matter will produce impurity gas during the anaerobic fermentation of sewage, which reduces the purity of the gas after fermentation. The prior art cannot remove the oxygen dissolved in the liquid during pre-treatment, resulting in a very low efficiency of liquid anaerobic fermentation. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an anaerobic fermentation treatment device for livestock and poultry manure and a treatment process thereof.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an anaerobic fermentation treatment device for livestock and poultry manure, comprising a main barrel, a barrel wall collecting mechanism for anaerobically heating and stirring the liquid and collecting impurities is arranged at the lower end of the main barrel, the barrel wall collecting mechanism comprises a first cavity opened at the lower end of the main barrel, a placement groove is opened at the upper end of the main barrel, a fixing plate is fixedly connected to the lower end of the main barrel, a motor is fixedly connected to the lower end of the fixing plate, a transmission shaft of the motor passes through the fixing plate, a fixing rod is fixedly connected to the transmission shaft end of the motor, the fixing rod and the main barrel are rotatably penetrated, a plurality of rotating rods are arranged on the side of the fixing rod, a liquid surface collecting mechanism for collecting suspended matter on the liquid surface is arranged at the upper end of the fixing rod, and four support columns distributed at equal angles are fixedly connected to the lower end of the main barrel.

[0006] Preferably, four groups of second through holes distributed at equal angles are provided on the side of the fixed rod, each group of the second through holes is composed of a plurality of second through holes arranged, and a plurality of the second through holes are respectively fixedly connected to the ends of the rotating rod, a third cavity is provided at the upper end of the fixed rod, a plurality of the rotating rods are respectively provided with second cavities inside, and a plurality of the second cavities are respectively communicated with the third cavity.

[0007] Preferably, four groups of third through holes are respectively opened at equal angles through the side surfaces of several of the rotating rods, each group of the third through holes is composed of several third through holes arranged at equal distances, and one-way valves are respectively fixedly connected in several of the third through holes.

[0008] Preferably, the outer end surfaces of several of the rotating rods are respectively provided with second limiting grooves, several of the second limiting grooves are respectively fixedly connected with elastic rings, the ends of several of the elastic rings are respectively fixedly connected with connecting rings that slide with the second limiting grooves, and the ends of several of the connecting rings are fixedly connected with four second fixed bodies distributed at equal angles.

[0009] Preferably, a third limiting groove is respectively opened at the upper end of the four second fixed bodies, and the four third limiting grooves are respectively arranged to penetrate one side surface of the second fixed body, and the four second fixed bodies are respectively slidably matched with the second limiting body in the third limiting groove, and one side surface of the four second limiting bodies is set as a second filter membrane, and the four second fixed bodies are respectively opened with a plurality of first through holes on the side close to the second filter membrane.

[0010] Preferably, the main body tube is fixedly connected to a heating net rotatably matched with the fixing rod in the first cavity, a plurality of fourth through holes are opened on the side of the fixing rod at the upper end of the heating net, an air inlet hole is opened through the end of the fixing plate, and the air inlet hole is connected to the oxygen-free tank through an air pipe.

[0011] Preferably, the liquid level collection mechanism includes a first limiting groove provided at the upper end of the fixed rod, a connecting rod being threadedly engaged in the first limiting groove, a protective plate being fixedly connected to the upper end of the connecting rod, a limiting ring being fixedly connected to the lower end of the protective plate and rotatably engaged with the placement groove, a one-way air outlet valve being penetrated through the upper end surface of the protective plate, and the one-way air outlet valve being connected to the collecting gas tank through an air supply pipe.

[0012] Preferably, a mounting groove is provided at the upper end of the fixed rod, an electric telescopic rod is fixedly connected in the mounting groove, a telescopic end of the electric telescopic rod is fixedly connected to a first fixed body, an empty groove is provided on one side of the first fixed body, a first accommodating groove communicating with the empty groove is provided inside the first fixed body, a first filter membrane is provided on the side of the first accommodating groove, a liquid level sensor is fixedly connected to the lower end surface of the first fixed body, and the liquid level sensor is connected to the electric telescopic rod through an electric wire.

[0013] A process for anaerobic fermentation treatment of livestock and poultry manure, comprising the following steps: S1: The motor drives the fixed rod to rotate, and the fixed rod drives several rotating rods on the side to rotate, and the several rotating rods drive the sewage to rotate. At the same time, the oxygen-free tank transports the gas to the first cavity through the gas pipe, and starts the heating network. The gas is heated by the heating network, and then enters the third cavity through several fourth through holes. Then the heated gas is ejected through the one-way valves on the sides of the several rotating rods, so that a large number of bubbles can be discharged into the sewage while stirring the sewage. A large number of bubbles are attached around the tiny impurities. At the same time, under the stirring of the sewage, the bubbles drive the impurities to attach to the inner wall of the main cylinder. Then the second fixed body rotates along the inner wall of the main cylinder driven by the motor. While rotating, the sewage mixed with impurities flows into the second limiter, and the impurities are collected in the second limiter through the second filter membrane, so that the tiny suspended impurities in the sewage can be removed. After the pretreatment is completed, the second limiter is slid out for cleaning; S2: The electric telescopic rod is retracted to control the distance between the liquid level sensor and the liquid surface within a predetermined range, and then the impurities floating on the liquid surface flow into the first receiving tank and are collected in the first receiving tank by the first filter membrane, thereby ensuring that the impurities in the sewage can be completely collected; S3: Under the stirring of several rotating rods, the oxygen in the sewage will overflow into the main cylinder and then be discharged through the one-way air outlet valve, thereby greatly reducing the oxygen content in the sewage and improving the efficiency of subsequent anaerobic fermentation of the sewage and the purity of the product.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The motor drives the fixed rod to rotate, and the fixed rod drives several rotating rods on the side to rotate, and the several rotating rods drive the sewage to rotate. At the same time, the oxygen-free tank transports the gas to the first cavity through the gas pipe, starts the heating network, and the gas is heated by the heating network. Then, it enters the third cavity through several fourth through holes, and then the heated gas is ejected through the one-way valves on the sides of several rotating rods, so that a large number of bubbles can be discharged into the sewage while stirring the sewage. A large number of bubbles are attached around tiny impurities. At the same time, under the stirring of the sewage, the bubbles drive the impurities to attach to the inner wall of the main cylinder. Then, the second fixed body rotates along the inner wall of the main cylinder driven by the motor. While rotating, the sewage mixed with impurities flows into the second limiting body, and the impurities are collected in the second limiting body through the second filter membrane, so that the tiny suspended impurities in the sewage can be removed. After the pretreatment is completed, the second limiting body is slid out for cleaning; The electric telescopic rod contracts to control the distance between the liquid level sensor and the liquid surface within a predetermined range, and then the impurities floating on the liquid surface flow into the first holding tank and are collected in the first holding tank through the first filter membrane, thereby ensuring that the impurities in the sewage can be completely collected. At the same time, the heated gas can heat the sewage evenly. At the same time, under the stirring of several rotating rods, the oxygen in the sewage will overflow into the main cylinder and then be discharged through the one-way air outlet valve, thereby greatly reducing the oxygen content in the sewage and improving the efficiency of subsequent anaerobic fermentation of the sewage and the purity of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention is a sectional view of the whole Figure 1 ; Figure 3 The present invention is a sectional view of the whole Figure 2 ; Figure 4 The present invention is a sectional view of the whole Figure 3 ; Figure 5 For the present invention Figure 2 A magnified image of point A; Figure 6 For the present invention Figure 3 A magnified view of point B; Figure 7 For the present invention Figure 3 Enlarged view of point C; Figure 8 For the present invention Figure 4 Enlarged view of point D.

[0016] 1. Main cylinder; 2. Liquid level collection mechanism; 3. Cylinder wall collection mechanism; 4. Support column; 11. Placement slot; 21. Protective plate; 22. One-way air outlet valve; 23. Limiting ring; 24. Mounting slot; 25. Electric telescopic rod; 26. First limiting slot; 27. First fixed body; 28. First containing slot; 29. ​​First filter membrane; 210. Connecting rod; 211. Empty slot; 212. Liquid level sensor; 31. Motor; 32. Fixed plate; 33. First empty cavity; 34, heating net; 35, fixing rod; 36, rotating rod; 37, second fixing body; 38, first through hole; 39, air inlet; 310, second limiting groove; 311, elastic ring; 312, connecting ring; 313, second cavity; 314, third limiting groove; 315, second limiting body; 316, second through hole; 317, third through hole; 318, one-way valve; 319, second filter membrane; 320, third cavity; 321, fourth through hole. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] See also Figure 1-Figure 8 A device for anaerobic fermentation treatment of livestock and poultry manure comprises a main body cylinder 1, and a cylinder wall collecting mechanism 3 for anaerobic heating and stirring of liquid and collecting impurities is arranged at the lower end of the main body cylinder 1.

[0019] In this embodiment, the cylinder wall collecting mechanism 3 includes a first cavity 33 opened at the lower end of the main cylinder 1, a placement groove 11 is opened at the upper end of the main cylinder 1, a fixing plate 32 is fixedly connected to the lower end of the main cylinder 1, a motor 31 is fixedly connected to the lower end of the fixing plate 32, a transmission shaft of the motor 31 passes through the fixing plate 32, a fixing rod 35 is fixedly connected to the transmission shaft end of the motor 31, the fixing rod 35 is rotatably penetrated by the main cylinder 1, and a plurality of rotating rods 36 are arranged on the side of the fixing rod 35.

[0020] The side of the fixed rod 35 is provided with four groups of second through holes 316 distributed at equal angles, each group of the second through holes 316 is composed of a plurality of second through holes 316 arranged in an array, and the plurality of second through holes 316 are respectively fixedly connected to the ends of the rotating rod 36, and the upper end of the fixed rod 35 is provided with a third cavity 320, and the interiors of the plurality of rotating rods 36 are respectively provided with second cavities 313, and the plurality of second cavities 313 are respectively communicated with the third cavity 320.

[0021] Four groups of third through holes 317 are respectively formed at equal angles through the sides of the plurality of rotating rods 36 , each group of the third through holes 317 is composed of a plurality of third through holes 317 arranged at equal intervals, and a one-way valve 318 is fixedly connected to each of the plurality of third through holes 317 .

[0022] The outer end surfaces of several of the rotating rods 36 are respectively provided with second limiting grooves 310, and several of the second limiting grooves 310 are respectively fixedly connected with elastic rings 311, and the ends of several of the elastic rings 311 are respectively fixedly connected with connecting rings 312 that slide with the second limiting grooves 310, and the ends of several of the connecting rings 312 are fixedly connected with four second fixing bodies 37 distributed at equal angles.

[0023] The upper ends of the four second fixed bodies 37 are respectively provided with third limiting grooves 314, and the four third limiting grooves 314 are respectively set to penetrate one side of the second fixed body 37. The four second fixed bodies 37 are respectively slidably matched with second limiting bodies 315 in the third limiting grooves 314, and one side of the four second limiting bodies 315 is set as a second filter membrane 319. The four second fixed bodies 37 are respectively provided with a plurality of first through holes 38 on the side close to the second filter membrane 319.

[0024] The main tube 1 is fixedly connected with a heating net 34 rotatably matched with a fixing rod 35 in the first cavity 33. The side of the fixing rod 35 is provided with a plurality of fourth through holes 321 at the upper end of the heating net 34. An air inlet 39 is penetrated through the end of the fixing plate 32. The air inlet 39 is connected with the oxygen-free tank through an air pipe.

[0025] Specifically in this embodiment, a liquid surface collecting mechanism 2 for collecting suspended matter on the liquid surface is disposed at the upper end of the fixing rod 35 , and four supporting columns 4 distributed at equal angles are fixedly connected to the lower end of the main body tube 1 .

[0026] The liquid level collecting mechanism 2 includes a first limiting groove 26 provided at the upper end of the fixing rod 35, a connecting rod 210 being threadedly engaged in the first limiting groove 26, a protective plate 21 being fixedly connected to the upper end of the connecting rod 210, a limiting ring 23 being fixedly connected to the lower end of the protective plate 21 for rotationally engaging with the placement groove 11, a one-way air outlet valve 22 being penetrated through the upper end surface of the protective plate 21, and the one-way air outlet valve 22 being connected to the collecting gas tank through an air supply pipe.

[0027] The upper end of the fixed rod 35 is provided with a mounting groove 24, and the electric telescopic rod 25 is fixedly connected in the mounting groove 24. The telescopic end of the electric telescopic rod 25 is fixedly connected to a first fixed body 27, and a side surface of the first fixed body 27 is provided with an empty groove 211. The inside of the first fixed body 27 is provided with a first receiving groove 28 that communicates with the empty groove 211. The side surface of the first receiving groove 28 is set as a first filter membrane 29. The lower end surface of the first fixed body 27 is fixedly connected to a liquid level sensor 212, and the liquid level sensor 212 is connected to the electric telescopic rod 25 through an electric wire.

[0028] A specific anaerobic fermentation treatment process for livestock and poultry manure includes the following steps: S1: The motor 31 drives the fixed rod 35 to rotate, and the fixed rod 35 drives the plurality of rotating rods 36 on the side to rotate, and the plurality of rotating rods 36 drive the sewage to rotate. At the same time, the oxygen-free tank transports the gas to the first cavity 33 through the gas pipe, and the heating net 34 is started. The gas is heated by the heating net 34, and then enters the third cavity 320 through the plurality of fourth through holes 321. The heated gas is then ejected through the one-way valves 318 on the sides of the plurality of rotating rods 36, so that a large amount of gas can be discharged into the sewage while stirring the sewage. Bubbles, a large number of bubbles are attached to the tiny impurities, and at the same time, under the stirring of sewage, the bubbles drive the impurities to attach to the inner wall of the main tube 1, and then the second fixed body 37 is driven by the motor 31 to rotate along the inner wall of the main tube 1. During the rotation, sewage mixed with impurities flows into the second limiting body 315, and the impurities are collected in the second limiting body 315 through the second filter membrane 319, so that the tiny suspended impurities in the sewage can be removed. After the pretreatment is completed, the second limiting body 315 is slid out for cleaning; S2: The electric telescopic rod 25 is retracted to control the distance between the liquid level sensor 212 and the liquid surface within a predetermined range, and then the impurities floating on the liquid surface flow into the first receiving tank 28 and are collected in the first receiving tank 28 by the first filter membrane 29, thereby ensuring that the impurities in the sewage can be completely collected; S3: Under the stirring of several rotating rods 36, the oxygen in the sewage will overflow into the main tube 1 and then be discharged through the one-way air outlet valve 22, thereby greatly reducing the oxygen content in the sewage and improving the efficiency of subsequent anaerobic fermentation of the sewage and the purity of the product.

[0029] The operating principle of the present invention is now described as follows: When in use, the main body tube 1 is placed on a horizontal plane through the four support columns 4, and then the filtered livestock and poultry manure and sewage are poured into the placement groove 11 of the main body tube 1, and then the connecting rod 210 and the first limiting groove 26 are tightened by threads, and at the same time, the protective plate 21 moves downward under the drive of the connecting rod 210, so that the limiting ring 23 on the lower end surface of the protective plate 21 is fitted with the placement groove 11, and then the motor 31 is started, and the motor 31 drives the fixed rod 35 to rotate, and the fixed rod 35 drives several rotating rods 36 on the side to rotate, and several rotating rods 36 drive the sewage to rotate. At the same time, the oxygen-free tank transports the gas to the first cavity 33 through the gas pipe, and the heating network 34 is started. The gas is heated by the heating network 34, and then enters the third cavity 320 through several fourth through holes 321. The gas introduced is inert nitrogen. After heating, the nitrogen is sprayed from the one-way valve 318 into the solution in the main body tube 1, and the sprayed gas The bubbles rise in the liquid in the form of bubbles, which can wrap the impurities suspended in the liquid and float them on the water surface, making it convenient for the liquid surface collecting mechanism 2 to collect the impurities. At the same time, under the stirring of the sewage, the bubbles drive the impurities to adhere to the inner wall of the main tube 1. Then, the second fixed body 37 rotates along the inner wall of the main tube 1 driven by the motor 31. While rotating, the sewage mixed with impurities flows into the second limiting body 315, and the sewage flows out through the second filter membrane 319 and the filter structure on the side of the second fixed body 37, while the gathered suspended impurities are collected in the second limiting body 315. Since the second fixed body 37 rotates at a uniform speed all the time and the gathered suspended impurities have greater viscosity, the impurities are collected in the second limiting body 315 through the second filter membrane 319, so that the fine suspended impurities in the sewage can be removed. After the pretreatment is completed, the second limiting body 315 is slid out for cleaning.

[0030] When the cylinder wall collecting mechanism 3 removes impurities on the inner wall of the main cylinder 1, the electric telescopic rod 25 contracts to control the distance between the liquid level sensor 212 and the liquid surface within a predetermined range. Then, the impurities floating on the liquid surface flow into the first receiving tank 28 and are collected in the first receiving tank 28 by the first filter membrane 29, thereby ensuring that the impurities in the sewage can be completely collected. At the same time, the heated gas can evenly heat the sewage. At the same time, under the stirring of several rotating rods 36, the oxygen in the sewage will overflow into the main cylinder 1, and then be discharged through the one-way air outlet valve 22, thereby greatly reducing the oxygen content in the sewage and improving the efficiency of subsequent anaerobic fermentation of the sewage and the purity of the product.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An anaerobic fermentation treatment device for livestock and poultry manure, comprising a main body cylinder (1), characterized in that: The lower end of the main body tube (1) is provided with a tube wall collecting mechanism (3) for performing oxygen-free heating and stirring on the liquid and collecting impurities. The tube wall collecting mechanism (3) comprises a first cavity (33) provided at the lower end of the main body tube (1). The upper end of the main body tube (1) is provided with a placement groove (11). The lower end of the main body tube (1) is fixedly connected to a fixing plate (32). The lower end of the fixing plate (32) is fixedly connected to a motor (31). The transmission shaft of the motor (31) passes through the fixing plate (32). The end of the transmission shaft of the motor (31) is fixedly connected to a fixing rod (35). The fixing rod (35) is rotatably arranged to pass through the main body tube (1). A plurality of rotating rods (36) are provided on the side of the fixing rod (35). The upper end of the fixing rod (35) is provided with a liquid surface collecting mechanism (2) for collecting suspended matter on the liquid surface. The lower end of the main body tube (1) is fixedly connected to four support columns (4) distributed at equal angles.

2. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 1, characterized in that: Four groups of second through holes (316) distributed at equal angles are formed on the side of the fixed rod (35); each group of the second through holes (316) is composed of a plurality of second through holes (316) arranged in an array; the plurality of second through holes (316) are respectively fixedly connected to the ends of the rotating rod (36); a third cavity (320) is formed at the upper end of the fixed rod (35); a second cavity (313) is respectively formed inside the plurality of rotating rods (36); and the plurality of second cavities (313) are respectively communicated with the third cavity (320).

3. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 2, characterized in that: Four groups of third through holes (317) are respectively formed at equal angles through the side surfaces of the plurality of rotating rods (36); each group of the third through holes (317) is composed of a plurality of third through holes (317) arranged at equal intervals; and a one-way valve (318) is respectively fixedly connected to the plurality of third through holes (317).

4. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 2, characterized in that: The outer end surfaces of a plurality of the rotating rods (36) are respectively provided with second limiting grooves (310), and elastic rings (311) are respectively fixedly connected in a plurality of the second limiting grooves (310), and the ends of a plurality of the elastic rings (311) are respectively fixedly connected with connecting rings (312) that are slidably matched with the second limiting grooves (310), and the ends of a plurality of the connecting rings (312) are respectively fixedly connected with four second fixing bodies (37) distributed at equal angles.

5. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 4, characterized in that: A third limiting groove (314) is respectively formed at the upper end of the four second fixing bodies (37), and the four third limiting grooves (314) are respectively arranged to penetrate a side surface of the second fixing body (37). The four second fixing bodies (37) are respectively slidably matched with a second limiting body (315) in the third limiting groove (314), and a side surface of the four second limiting bodies (315) is provided with a second filter membrane (319). The four second fixing bodies (37) are respectively provided with a plurality of first through holes (38) on the side surface close to the second filter membrane (319).

6. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 1, characterized in that: The main body tube (1) is fixedly connected to a heating net (34) in a first cavity (33) and rotatably cooperates with a fixing rod (35); a plurality of fourth through holes (321) are provided on the side of the fixing rod (35) at the upper end of the heating net (34); an air inlet hole (39) is provided through the end of the fixing plate (32); and the air inlet hole (39) is connected to an oxygen-free tank via an air delivery pipe.

7. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 1, characterized in that: The liquid level collection mechanism (2) comprises a first limiting groove (26) provided at the upper end of the fixing rod (35); a connecting rod (210) is threadedly engaged in the first limiting groove (26); a protective plate (21) is fixedly connected to the upper end of the connecting rod (210); a limiting ring (23) rotatably engaged with the placement groove (11) is fixedly connected to the lower end of the protective plate (21); a one-way air outlet valve (22) is provided through the upper end surface of the protective plate (21); and the one-way air outlet valve (22) is connected to a collecting gas tank via an air supply pipe.

8. The anaerobic fermentation treatment device for livestock and poultry manure according to claim 7, characterized in that: The upper end of the fixed rod (35) is provided with a mounting groove (24), an electric telescopic rod (25) is fixedly connected in the mounting groove (24), a telescopic end of the electric telescopic rod (25) is fixedly connected to a first fixed body (27), a side surface of the first fixed body (27) is provided with an empty groove (211), a first receiving groove (28) communicating with the empty groove (211) is provided inside the first fixed body (27), a side surface of the first receiving groove (28) is provided with a first filter membrane (29), a lower end surface of the first fixed body (27) is fixedly connected to a liquid level sensor (212), and the liquid level sensor (212) is connected to the electric telescopic rod (25) via an electric wire.

9. An anaerobic fermentation treatment process for livestock and poultry manure, applied to an anaerobic fermentation treatment device for livestock and poultry manure as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1: The motor (31) drives the fixed rod (35) to rotate, the fixed rod (35) drives a plurality of rotating rods (36) on the side to rotate, the plurality of rotating rods (36) drive the sewage to rotate, and at the same time, the oxygen-free tank transports gas to the first cavity (33) through the gas pipe, the heating net (34) is started, the gas is heated by the heating net (34), and then enters the third cavity (320) through a plurality of fourth through holes (321), and then the heated gas is ejected through the one-way valves (318) on the side of the plurality of rotating rods (36), so that the sewage can be stirred and the gas can be discharged into the sewage at the same time. A large number of bubbles are discharged, and a large number of bubbles are attached to the tiny impurities. At the same time, under the stirring of the sewage, the bubbles drive the impurities to adhere to the inner wall of the main tube (1). Then, the second fixed body (37) is driven by the motor (31) to rotate along the inner wall of the main tube (1). While rotating, the sewage mixed with the impurities flows into the second limiting body (315). The impurities are collected in the second limiting body (315) through the second filter membrane (319), so that the tiny suspended impurities in the sewage can be removed. After the pretreatment is completed, the second limiting body (315) is slid out for cleaning; S2: the electric telescopic rod (25) is retracted so that the distance between the liquid level sensor (212) and the liquid level is controlled within a predetermined range, and then the impurities floating on the liquid level flow into the first containing tank (28) and are collected in the first containing tank (28) by the first filter membrane (29), thereby ensuring that the impurities in the sewage can be completely collected; S3: Under the stirring of the plurality of rotating rods (36), oxygen in the sewage will overflow into the main cylinder (1) and then be discharged through the one-way air outlet valve (22), thereby greatly reducing the oxygen content in the sewage and improving the efficiency of subsequent anaerobic fermentation of the sewage and the purity of the product.

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