CN220877955U - Wastewater treatment device in livestock and poultry breeding process - Google Patents

Abstract

The application discloses a wastewater treatment device in the livestock and poultry breeding process, which belongs to the field of breeding wastewater treatment and is used for wastewater treatment, and comprises a feed pipe which is communicated with a top distribution cylinder through an inlet pipe, wherein the top distribution cylinder is provided with a feed distribution cone cylinder, and a first-stage treatment cylinder is provided with a first-stage filtering cone cylinder and a first-stage reversing cone cylinder for receiving fecal water; the primary treatment cylinder is communicated with the secondary treatment cylinder, the secondary treatment cylinder is provided with a secondary material distribution cone connected with the primary material guide cone and the inner guide plate, the secondary material distribution cone is positioned above the secondary filtering cone, and the secondary filtering cone is connected with the liquid outlet cone; the liquid outlet cone is communicated with the liquid outlet cone; the top distribution cylinder, the primary treatment cylinder, the secondary treatment cylinder and the liquid outlet cone cylinder are internally provided with a central shaft body, and the central shaft body is connected with a primary discharge blade and a secondary discharge blade. The application can realize the effective separation of the liquid and the solid in the livestock and poultry manure sewage in the vertical direction, and improves the separation efficiency.

Description

Wastewater treatment device in livestock and poultry breeding process

Technical Field

The application belongs to the field of cultivation sewage treatment, and particularly relates to a wastewater treatment device in the livestock and poultry cultivation process.

Background

Livestock and poultry are main animal protein sources of human beings, but more sewage and excrement are generated in the livestock and poultry cultivation process, the sewage and the excrement often form mixed liquid and are not easy to treat, if the sewage-containing excrement or the excrement-containing sewage is simply piled up, the environment is polluted, the peculiar smell is heavy, more mosquitoes and flies are incurred, and the waste of organic matters in the excrement sewage is also caused.

For solving the above-mentioned prior art's problem, chinese patent publication No. CN109293178a discloses a sewage and fecal treatment device for livestock and poultry cultivation, and it includes the hydrops case, the roof of hydrops case has the dewatering box through bolted connection, and the both ends of dewatering box have first shrouding and second shrouding through bolted connection respectively, the inside of dewatering box has the inner tube through bolted connection, and the circumference outer wall of inner tube is provided with the fender flow ring of equidistance distribution arc structure, the dehydration hole has been seted up at the circumference outer wall middle part of fender flow ring, be connected with the axis of rotation through mechanical seal between first shrouding and the second shrouding.

But the separation of solid and liquid of sewage and feces is realized by pushing paddles, a dewatering box, a dewatering hole, a flow blocking ring and the like, but the separation effect of the solid and liquid is not ideal due to the singleness of the flow blocking ring and the dewatering hole, and in the setting process, a separation tank with a special structure is also required to be arranged, and the separation tank is matched with a crushing rod to realize better separation.

Disclosure of Invention

The application aims to provide a wastewater treatment device in the livestock and poultry breeding process, which can realize effective separation of liquid and solid matters in livestock and poultry manure wastewater in the vertical direction, improve the separation efficiency, reduce the complexity of a separation structure and facilitate the separation treatment of the follow-up wastewater and the solid matters.

In order to achieve the above purpose, the application is realized by the following technical scheme:

The application relates to a wastewater treatment device in the livestock and poultry breeding process, which comprises a treatment cylinder, wherein an inlet pipe is communicated with the top of the treatment cylinder, and the inlet pipe is communicated with a feed pipe; the treatment cylinder is also provided with a liquid outlet cone cylinder and a solid discharge pipe, the solid discharge pipe is provided with a solid outlet, the treatment cylinder comprises a top distribution cylinder, a primary treatment cylinder and a secondary treatment cylinder, the top distribution cylinder is connected with the inlet pipe into a whole, and the primary treatment cylinder is positioned between the top distribution cylinder and the secondary treatment cylinder and is integrated with the top distribution cylinder and the secondary treatment cylinder; the top distribution cylinder is internally provided with a feeding distribution cone cylinder, an outlet of the feeding distribution cone cylinder is positioned above the primary filtering cone cylinder, the primary filtering cone cylinder is provided with a plurality of primary filtering holes, primary discharging blades are arranged on the circumferential outer wall of the primary filtering cone cylinder, and the primary discharging blades are driven by a central shaft body; the peripheral outer wall bottom edge of the first-stage discharge blade is provided with a first-stage solid collecting plate, and the first-stage solid collecting plate is provided with a first-stage solid discharge port communicated with a solid discharge pipe; the bottom of the primary filtering cone is provided with a secondary material distribution cone, and the secondary material distribution cone is positioned above the secondary filtering cone; the secondary filtering cone cylinder is provided with a plurality of secondary filtering holes, the bottom of the outer wall of the secondary filtering cone cylinder is integrally provided with a secondary solid collecting plate, and the secondary solid collecting plate is provided with a secondary solid discharge outlet communicated with a solid discharge pipe; the outer wall of the secondary filtering cone is provided with a secondary discharging blade which is driven by a central shaft body; a liquid outlet pipe is arranged below the secondary filtering cone; the first-stage filtering cone cylinder is connected with the first-stage treatment cylinder into a whole through a first-stage solid matter collecting plate; the secondary filtering cone cylinder is connected with the secondary treatment cylinder into a whole through a secondary solid matter collecting plate; the liquid outlet pipe is connected with the secondary solid matter collecting plate into a whole through the liquid outlet cone; the liquid outlet cone is positioned at the edge of the bottom end opening of the secondary filtering cone; the top of the central shaft body extends out of the top distribution cylinder and is fixedly connected with a power input wheel.

As one of the preferable technical schemes, the top end of the feeding distribution cone is integrally provided with a shaft sleeve, and the shaft sleeve penetrates out of the top end of the top distribution cone; the bottom edge of the feeding distribution cone is connected with the inner wall of the top distribution cone through a radial connecting plate.

As one of the preferable technical schemes, the bottom surfaces of the first-stage discharging blades are respectively positioned above the peripheral outer wall of the first-stage filtering cone cylinder and above the first-stage solid matter collecting plate.

As one of the preferable technical schemes, the bottom surfaces of the secondary discharging blades are respectively positioned above the peripheral outer wall of the secondary filtering cone and above the secondary solid collecting plate.

As one of the preferable technical schemes, the edge of the bottom opening of the primary filtering cone is fixedly connected with a primary material guiding cone, the inner wall of the primary material guiding cone is fixedly connected with a plurality of inner guide plates, and the inner guide plates are fixedly connected with the primary material guiding cone and uniformly distributed around the central axis of the primary material guiding cone; the bottom opening edge of the primary material guiding cone is positioned above the secondary material distributing cone, and the primary material guiding cone is connected with the circumferential outer wall of the secondary material distributing cone through an inner guide plate.

As one of the preferable technical schemes, the top ends of the secondary discharging blades are positioned between the secondary material distribution cone and the secondary filtering cone and are connected with the central shaft body; the liquid outlet cone and the secondary filter cone form a cavity for accommodating the tail end of the central shaft body, and the liquid outlet pipe is communicated with the cavity formed by the secondary filter cone and the liquid outlet cone.

As one of the preferable technical schemes, a central shaft body is provided with a shaft body protection tube at the position of a cavity formed by the primary filtering cone and the primary material guiding cone, the central shaft body is positioned in the shaft body protection tube, and the top end of the shaft body protection tube is respectively connected with the primary filtering cone and the secondary material distributing cone at the corresponding positions.

As one of the preferable technical schemes, the first-stage solid object discharge port and the second-stage solid object discharge port in the application comprise plate bodies which are obliquely arranged towards the inside of the solid object discharge pipe, and the top ends of the plate bodies are respectively fixedly connected with the openings of the first-stage solid object collecting plate and the second-stage solid object collecting plate at the corresponding positions.

As one of the preferable technical schemes, the central shaft body is connected with a spiral blade at the position of a cavity formed by the secondary filtering cone and the liquid outlet cone, and the spiral blade is positioned above the liquid outlet pipe.

Compared with the prior art, the application has the beneficial effects that:

According to the application, the structures such as the first-stage filtering cone cylinder, the first-stage solid matter collecting plate, the second-stage filtering cone cylinder and the second-stage solid matter collecting plate are arranged, and the first-stage discharging blades and the second-stage discharging blades are respectively matched, so that the treatment effect on livestock and poultry fecal sewage can be improved, the separation efficiency of solid matters and liquid in the fecal sewage can be improved, and the subsequent flow process is convenient for treating the solid matters and the liquid.

According to the application, by utilizing the characteristics of liquid fluidity, solid fluidity difference and the like in the vertical direction, the corresponding filtering structure and collecting structure are arranged, so that the separation effect is improved while the complex structure is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present application.

Fig. 2 is a schematic diagram of the overall structure of the present application.

Fig. 3 is a top view of the present application.

Fig. 4 is a cross-sectional view taken at the location A-A in fig. 3 and in the direction.

Fig. 5 is a schematic view of the internal structure of the present application.

In the figure: 1. a power input wheel; 2. a central shaft body; 3. a top distribution cylinder; 4. an inlet pipe; 5. a feed pipe; 6. a primary treatment cylinder; 7. a secondary treatment cylinder; 8. a solids discharge pipe; 9. a solids outlet; 10. a liquid outlet tube; 11. a liquid outlet cone; 12. reinforcing the bottom plate; 13. a shaft sleeve of the shaft body; 14. a feed distribution cone; 15. a first stage discharge blade; 16. a primary filter cone; 17. a shaft body protecting tube; 18. a first-stage material guiding cone; 19. an inner guide plate; 20. a first-stage solids discharge port; 21. a first-stage solids collection plate; 22. a secondary solids collection plate; 23. a secondary discharge blade; 24. a secondary filter cone; 25. a secondary material distribution cone; 26. a secondary solids discharge port; 27. a radial connection plate; 28. and a notch side plate.

Detailed Description

The specific construction and operation of the present application will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 5, in the wastewater treatment apparatus in the livestock and poultry raising process, a feed pipe 5 feeds livestock and poultry wastewater to an inlet pipe 4 via a screw feeding device, and the inlet pipe 4 communicates with the inside of a top distribution cylinder 3. The top distributing cylinder 3 is of a circular cylinder structure with a closed top end and an open bottom end, the inside of the top distributing cylinder 3 is coaxially provided with a shaft body shaft sleeve 13, the top end of the shaft body shaft sleeve 13 extends out of the top distributing cylinder 3 and is fixed with the top distributing cylinder 3 into a whole, and the bottom end of the shaft body shaft sleeve 13 is positioned in the top distributing cylinder 3 and is integrated with the feeding distributing cone 14.

The feeding distribution cone 14 is a cone-shaped cylinder with an opening at the bottom end, a radial connecting plate 27 is arranged at the edge of the opening at the bottom of the feeding distribution cone 14, and the radial connecting plates 27 are uniformly distributed around the central axis of the feeding distribution cone 14. The radial connection plates 27 are fixedly connected with the inner wall of the top distribution cylinder 3, through holes for downwards flowing livestock and poultry sewage are formed between the adjacent radial connection plates 27, the livestock and poultry sewage can downwards distribute through the outer wall of the inlet pipe 4 under the pressure effect of the sewage supplied by the feeding pipe 5, and the livestock and poultry sewage enters the large-level treatment cylinder 6 through the through holes formed by the adjacent radial connection plates 27.

The central axis department of a level is handled section of thick bamboo 6 is provided with axis body pillar 17, and the top of axis body pillar 17 is fixed connection with the top of a level filter cone 16, and the bottom of axis body pillar 17 is fixed connection with a secondary cloth cone 25. The shaft body protecting pipe 17 is of a hollow round cylinder structure, and the top end and the bottom end of the shaft body protecting pipe 17 are both closed.

The shaft body protecting tube 17 is accommodated in the central shaft body 2, two ends of the central shaft body 2 penetrate through two ends of the shaft body protecting tube 17 respectively, and sealing bearings are arranged at the penetrating positions.

The top of the central shaft body 2 penetrates out of the top distribution cylinder 3 from the shaft body shaft sleeve 13 above, the top of the central shaft body 2 penetrating out of the top distribution cylinder 3 is fixedly connected with the power input wheel 1, and the power input wheel 1 is connected with an external power mechanism through a transmission structure.

The bottom end of the central shaft body 2 penetrates out of the shaft body protecting tube 17 and then enters into a cavity formed by the secondary filtering cone 24 and the liquid outlet cone 11 through the secondary distributing cone 25.

The primary filtering cone 16 is of a cone cylinder structure with a plurality of primary filtering holes, a primary solid collecting plate 21 is fixedly connected to the outer wall of the edge of the bottom opening of the primary filtering cone 16, and the outer wall of the primary solid collecting plate 21 is connected to the inner wall of the junction of the primary treatment cylinder 6 and the secondary treatment cylinder 7. The primary solid collecting plate 21 is an annular plate body, and a notch connected with the primary solid discharge port 20 is further formed in the primary solid collecting plate 21.

A first-stage discharging blade 15 is arranged above the first-stage solid matter collecting plate 21 and above the first-stage filtering cone 16, and the top end of the first-stage discharging blade 15 is connected to the central shaft body 2 at the position between the feeding distribution cone 14 and the first-stage filtering cone 16.

The bottom end opening edge of the primary filtering cone 16 is fixedly connected with a primary material guiding cone 18, the primary material guiding cone 18 is an inverted cone-shaped cylinder, a plurality of inner guide plates 19 are distributed on the inner wall of the primary material guiding cone 18, and the bottom ends of the inner guide plates 19 extend out of the primary material guiding cone 18 and are connected with the outer wall of the secondary material distributing cone 25.

The bottom border of secondary cloth awl section of thick bamboo 25 is located the top of secondary filter awl section of thick bamboo 24, and secondary filter awl section of thick bamboo 24 is the toper tubular structure, and the bottom border position department of secondary filter awl section of thick bamboo 24 is integrative to be provided with second grade solid matter and gathers board 22, and second grade solid matter gathers board 22 and the second grade treatment section of thick bamboo 7 inner wall connection of corresponding position department. The secondary solids collection plate 22 is provided with an opening notch connected to the secondary solids discharge port 26.

The secondary discharge blades 23 are arranged above the secondary solid matter collecting plate 22 and above the outer wall of the secondary filtering cone 24, and the top ends of the secondary discharge blades 23 are connected to the central shaft body 2 between the secondary distribution cone 25 and the secondary filtering cone 24.

The central shaft 2 is provided with a spiral blade (not shown in the figure) in a cavity formed by the secondary filter cone 24 and the liquid outlet cone 11, and the shape of the spiral blade is adapted to the shape of the cavity so as to accelerate the discharge of separated liquid through the liquid outlet pipe 10.

The secondary solid discharge outlet 26 and the primary solid discharge outlet 20 comprise inclined plate bodies connected with corresponding notch structures, the inclined plate bodies are positioned in the solid discharge pipes 8, the solid discharge pipes 8 are positioned on one sides of the primary treatment cylinder 6 and the secondary treatment cylinder 7, the bottoms of the solid discharge pipes 8 are fixed with the reinforcing bottom plate 12 into a whole, and the reinforcing bottom plate 12 is connected with the liquid outlet cone 11 and is separately arranged on two sides of the solid discharge pipes 8.

In order to ensure the discharge of the solids in the livestock and poultry manure water and avoid excessive invasion of the liquid to the filtered solids, two sides of the notch positions of the primary solids collecting plate 21 and the secondary solids collecting plate 22 can be provided with notch side plates 28, and the notch side plates 28 are used for connecting the primary filter cone 16 and the inner wall of the primary treatment cylinder 6 and the secondary filter cone 24 and the inner wall of the secondary treatment cylinder 7 on two sides of the notch, so that the primary discharge blade 15 and the secondary discharge blade 23 reciprocate between the notch side plates 28 on two sides of the notch under the drive of the central shaft body 2. The bottom of the notch side plate 28 is provided with a distance for discharging solids from the primary solid matter collecting plate 21 and the secondary solid matter collecting plate 22.

The primary treatment cylinder 6 and the secondary treatment cylinder 7 can be further provided with a high-pressure spray head structure, the high-pressure spray head can be connected with an external high-pressure water supply pipeline, and the high-pressure spray head structure faces the primary filter cone 16 and the secondary filter cone 24 for flushing and cleaning.

The solids discharge pipe 8 is located on the outer walls of the primary treatment cylinder 6 and the secondary treatment cylinder 7, and accommodates a primary solids discharge port 20 and a secondary solids discharge port 26. In order to ensure the stability of the bottom of the solids discharge pipe 8, it is possible to connect the liquid outlet cone 11 at the corresponding location by means of a reinforcing floor 12.

On the basis of the above embodiments, the technical features involved therein and the functions and roles that the technical features play in the technical solution are described in detail using the following paragraphs so as to help those skilled in the art to fully understand the technical solution and reproduce it.

When the application is used, the feed pipe 5 feeds the livestock manure sewage mixed by liquid and solid matters into the inlet pipe 4 through the screw conveying device (such as a screw conveyer device) and enters the top distribution cylinder 3 through the inlet pipe 4.

The livestock manure sewage entering the top distribution cylinder 3 falls to the outer wall of the feed distribution cone 14 through the through holes between the radial connection plates 27 and moves downward along the feed distribution cone 14. The livestock manure sewage which moves downward along the feed distribution cone 14 falls on the outer wall of the primary filter cone 16 and moves downward along the outer wall of the primary filter cone 16.

The liquid in the fecal sewage which moves downwards along the primary filter cone 16 enters the primary filter cone 16 through the primary filter holes, and the other fecal solid matters with larger particle size enter the primary solid matter collecting plate 21 along the outer wall of the primary filter cone 16.

Fecal sewage solids at the peripheral outer wall of the primary filter cone 16 and fecal sewage solids on the primary solids collecting plate 21 are collected and fed into the notch position by the primary discharge blades 15 rotating along with the central shaft body 2, and enter the solids discharge pipe 8 communicated with the primary solids discharge outlet 20 through the oblique plate body at the notch.

Fecal solid matters with smaller particle size enter the primary filtering cone 16 and are collected and fall on the circumferential outer wall of the secondary distributing cone 25 under the action of the primary material guiding cone 18 and the inner guide plate 19.

Fecal solid matter and sewage falling on the circumferential outer wall of the secondary distribution cone 25 move downwards on the circumferential outer wall of the secondary distribution cone 25 until falling on the circumferential outer wall of the secondary filter cone 24.

The solid matters of the excrement and the sewage with smaller particle size are acted by the secondary filtering holes of the secondary filtering cone 24, and the liquid enters the interior of the secondary filtering cone 24 and enters the liquid outlet pipe 10 through the liquid outlet cone 11 and is discharged. The solid matters of the excrement with smaller grain size are reserved on the outer wall of the secondary filtering cone 24 and the top surface of the secondary solid matter collecting plate 22, collected at the notch of the secondary discharging blade 23 under the action of the secondary discharging blade 23 rotating along with the central shaft body 2, and collected at the notch of the secondary discharging blade 23 are delivered to the secondary solid matter outlet 26 through the inclined plate body and fall into the solid matter outlet pipe 8.

Fecal solids falling within solids discharge pipe 8 are discharged from solids outlet 9 at the bottom end of solids discharge pipe 8 to a collection device for subsequent treatment.

The first-stage discharging blade 15 and the second-stage discharging blade 23 can reciprocate between the notch side plates 28 at two sides of the notch under the drive of the central shaft body 2, and the solid excrement can be continuously fed into the notch through the gaps between the notch side plates 28 and the first-stage solid collecting plate 21 and the gaps between the notch side plates 28 and the second-stage solid collecting plate 22 in the reciprocating process.

Finally, although the description has been described in terms of embodiments, not every embodiment is intended to include only a single embodiment, and such description is for clarity only, as one skilled in the art will recognize that the embodiments of the disclosure may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (9)

1. The wastewater treatment device in the livestock and poultry breeding process comprises a treatment cylinder, wherein an inlet pipe (4) is communicated with the top position of the treatment cylinder, and the inlet pipe (4) is communicated with a feed pipe (5); the treatment cylinder is also provided with a liquid outlet cone (11) and a solid discharge pipe (8), and the solid discharge pipe (8) is provided with a solid outlet (9), and is characterized in that: the treatment cylinder comprises a top distribution cylinder (3), a first-stage treatment cylinder (6) and a second-stage treatment cylinder (7), wherein the top distribution cylinder (3) is connected with the inlet pipe (4) into a whole, and the first-stage treatment cylinder (6) is positioned between the top distribution cylinder (3) and the second-stage treatment cylinder (7) and is integrated with the top distribution cylinder (3) and the second-stage treatment cylinder (7); the inside of the top distribution cylinder (3) is provided with a feeding distribution cone cylinder (14), an outlet of the feeding distribution cone cylinder (14) is positioned above a primary filtering cone cylinder (16), the primary filtering cone cylinder (16) is provided with a plurality of primary filtering holes, a primary discharging blade (15) is arranged at the circumferential outer wall of the primary filtering cone cylinder (16), and the primary discharging blade (15) is driven by a central shaft body (2); the circumferential outer wall bottom edge of the primary discharge blade (15) is provided with a primary solid collecting plate (21), and the primary solid collecting plate (21) is provided with a primary solid discharge outlet (20) communicated with a solid discharge pipe (8); the bottom of the primary filtering cone (16) is provided with a secondary material distribution cone (25), and the secondary material distribution cone (25) is positioned above the secondary filtering cone (24); the secondary filtering cone (24) is provided with a plurality of secondary filtering holes, the bottom of the outer wall of the secondary filtering cone (24) is integrally provided with a secondary solid collecting plate (22), and the secondary solid collecting plate (22) is provided with a secondary solid discharge outlet (26) communicated with the solid discharge pipe (8); the outer wall of the secondary filtering cone (24) is provided with a secondary discharging blade (23), and the secondary discharging blade (23) is driven by the central shaft body (2); a liquid outlet pipe (10) is arranged below the secondary filtering cone (24); the primary filtering cone (16) is connected with the primary treatment cylinder (6) into a whole through a primary solid collecting plate (21); the secondary filtering cone (24) is connected with the secondary treatment cylinder (7) into a whole through a secondary solid collecting plate (22); the liquid outlet pipe (10) is connected with the secondary solid matter collecting plate (22) into a whole through the liquid outlet cone (11); the liquid outlet cone (11) is positioned at the edge of the bottom end opening of the secondary filtering cone (24); the top end of the central shaft body (2) extends out of the top distribution cylinder (3) and is fixedly connected with a power input wheel (1).

2. The wastewater treatment device in livestock and poultry raising process according to claim 1, wherein: the top end of the feeding distribution cone (14) is integrally provided with a shaft body shaft sleeve (13), and the shaft body shaft sleeve (13) penetrates out of the top end of the top distribution cone (3); the bottom edge of the feeding distribution cone (14) is connected with the inner wall of the top distribution cylinder (3) through a radial connecting plate (27).

3. The wastewater treatment device in livestock and poultry raising process according to claim 2, wherein: the bottom surfaces of the primary discharge blades (15) are respectively positioned above the circumferential outer wall of the primary filtering cone (16) and above the primary solid collecting plate (21).

4. A wastewater treatment apparatus in a livestock and poultry farming process according to claim 3, wherein: the bottom surfaces of the secondary discharging blades (23) are respectively positioned above the peripheral outer wall of the secondary filtering cone (24) and above the secondary solid matter collecting plate (22).

5. The wastewater treatment device in livestock and poultry raising process according to claim 2, wherein: the bottom opening edge position of the primary filtering cone (16) is fixedly connected with a primary material guiding cone (18), the inner wall of the primary material guiding cone (18) is fixedly connected with a plurality of inner guide plates (19), and the inner guide plates (19) are fixedly connected with the primary material guiding cone (18) and uniformly distributed around the central axis of the primary material guiding cone (18); the bottom opening edge of the primary material guiding cone (18) is positioned above the secondary material distributing cone (25), and the primary material guiding cone (18) is connected with the circumferential outer wall of the secondary material distributing cone (25) through an inner guide plate (19).

6. The wastewater treatment device in livestock and poultry raising process according to claim 5, wherein: the top ends of the secondary discharging blades (23) are positioned between the secondary material distribution cone (25) and the secondary filtering cone (24) and are connected with the central shaft body (2); the liquid outlet cone (11) and the secondary filter cone (24) form a cavity for accommodating the tail end of the central shaft body (2), and the liquid outlet pipe (10) is communicated with the cavity formed by the secondary filter cone (24) and the liquid outlet cone (11).

7. The wastewater treatment device in livestock and poultry raising process according to claim 6, wherein: the central shaft body (2) is provided with a shaft body protection tube (17) at the position of a cavity formed by the primary filtering cone (16) and the primary material guiding cone (18), the central shaft body (2) is positioned in the shaft body protection tube (17), and the top ends of the shaft body protection tube (17) are respectively connected with the primary filtering cone (16) and the secondary material distributing cone (25) at the corresponding positions.

8. The wastewater treatment device in livestock and poultry raising process according to claim 7, wherein: the first-stage solid object discharge port (20) and the second-stage solid object discharge port (26) comprise plate bodies which are obliquely arranged towards the inside of the solid object discharge pipe (8), and the top ends of the plate bodies are respectively and fixedly connected with the openings of the first-stage solid object collecting plate (21) and the second-stage solid object collecting plate (22) at corresponding positions.

9. The wastewater treatment device in livestock and poultry raising process according to any one of claims 1 to 8, wherein: the central shaft body (2) is connected with a spiral blade at the position of a cavity formed by the secondary filtering cone (24) and the liquid outlet cone (11), and the spiral blade is positioned above the liquid outlet pipe (10).