Sewage treatment device for sheep farm

Abstract

The invention discloses a sewage treatment device for a sheep farm, and relates to the technical field of sewage treatment, the sewage treatment device comprises: a mixing kettle comprising a kettle body and a kettle cover arranged at the top of the kettle body; the sewage conveying unit is arranged in the mixing kettle, and the sewage conveying unit comprises a three-way pipe, a pair of valve seats arranged in the three-way pipe and a reversing valve element arranged between the valve seats. The device has the beneficial effects that when the sewage flow changes, the medicament conveying flow can be adjusted in time, the sewage medicament proportion is kept stable, and in addition, under the condition that a pump machine is not used, the medicament conveying pressure can be stabilized even if the medicament is continuously reduced. When the residual amount of the medicament reaches a certain threshold value, the sewage conveying action can be changed, and an operator is reminded to supplement the medicament in time.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a sewage treatment device for sheep farms. Background Art

[0002] The sewage generated during the breeding process of sheep mainly includes feces, urine and feed residues, and generally contains organic matter, suspended solids and nutrients such as nitrogen and phosphorus. To treat this sewage, it is usually first passed through a grille and a regulating tank to remove debris and temporarily store it, then the fecal residue is separated by a solid-liquid separator, and the remaining sewage is decomposed of organic matter by a septic tank. Then, chemicals are added to the sewage to flocculate the suspended solids, the flocs are scraped off after being treated by a flotation machine, and finally the treatment is completed through an integrated treatment device and a disinfection tank.

[0003] The chemical dosing device is used to put these chemicals into the mixing tank. When injecting chemicals into the sewage treatment tank, such as flocculants, disinfectants, etc., it is necessary for personnel to regularly check the remaining amount of chemicals in the chemical dosing device to prevent insufficient chemicals from affecting the sewage treatment efficiency, which increases the workload of personnel. In addition, the chemical dosage is not easy to control. Different sewage volumes require different chemical dosages, which easily causes the problem of waste due to excessive chemicals. Summary of the Invention

[0004] In view of the problems existing in the above or the prior art, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a sewage treatment device for sheep farms, which can solve the problems that it is difficult to control the chemical dosage when the sewage volume changes during the mixing step of sewage and chemicals, and it is difficult to monitor when the remaining amount of chemicals is too small during the sewage treatment process.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A sewage treatment device for sheep farms, which includes a mixing kettle, including a kettle body and a kettle cover arranged on the top of the kettle body; A sewage delivery unit is arranged inside the mixing kettle. The sewage delivery unit includes a tee pipe, a pair of valve seats arranged inside the tee pipe, and a reversing valve core arranged between the valve seats; A chemical delivery unit is sleeved on the outer wall of the tee pipe, and includes a chemical tank, a first spring arranged around the bottom of the chemical tank, and a corrugated pipe arranged on the lower surface of the chemical tank; An adjusting unit includes an impeller arranged at the bottom of the reversing valve core, an opening and closing assembly arranged at the bottom of the impeller, and an isolation box sleeved outside the opening and closing assembly.

[0007] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the kettle body includes a plurality of support legs provided at its bottom, and a plurality of receiving cylinders provided at the bottom of the inner cavity of the kettle body; The opening of the three-way pipe penetrates and extends outside the kettle body and the kettle lid.

[0008] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the three-way pipe includes a liquid inlet channel, a liquid discharge channel provided below the liquid inlet channel, a reflux channel provided between the liquid inlet channel and the liquid discharge channel, and a pair of support frames provided inside the liquid discharge channel; the liquid discharge channel extends laterally; The valve seats are respectively fixed and symmetrically distributed inside the liquid inlet channel and the liquid discharge channel; both sides of the outer wall of the reversing valve core are closely attached to the sealing surfaces on the valve seats.

[0009] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the reversing valve core includes a T-shaped channel provided inside it, and a pair of gear rods provided on both sides of the outer wall of the reversing valve core; the gear rods penetrate through the outer wall of the three-way pipe.

[0010] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the medicine box includes a medicine adding pipe provided at its top, a plurality of piston rods provided at the bottom of the medicine box, a notch provided on one side of the medicine box, racks provided on both side walls of the notch, and a medicine delivery port provided at the bottom of the medicine box.

[0011] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the impeller includes a transmission rod provided at its center; the opening and closing assembly is fixedly connected to the bottom of the transmission rod.

[0012] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the opening and closing assembly includes an adjustment disk, an adjustment opening penetrating through the middle of the adjustment disk, adjustment blocks provided on both sides of the adjustment opening, and a second spring provided at one end of the adjustment block; The adjustment disk includes a connecting frame provided on its surface, and a plurality of limiting strips provided between the connecting frames; The adjustment block includes a limiting groove provided at its bottom.

[0013] As a preferred embodiment of the sewage treatment device for sheep farms according to the present invention, wherein: the isolation box includes a delivery port provided at its bottom, and a converging pipe provided on the side wall of the isolation box; the adjustment disk fits against the bottom of the inner cavity of the isolation box; the transmission rod penetrates into the isolation box.

[0014] Advantages of the present invention: When the sewage flow rate changes, the present invention can timely adjust the flow rate of the chemical agent delivery, maintain the stability of the sewage chemical agent ratio. In addition, without the aid of a pump, even if the chemical agent is continuously decreasing, the delivery pressure of the chemical agent can be stabilized. When the remaining amount of the chemical agent reaches a certain threshold, the sewage delivery action can be changed to remind the operator to replenish the chemical agent in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a partial cross-sectional view of the whole of the present invention.

[0017] Figure 2 It is a structural view of the sewage delivery unit of the present invention.

[0018] Figure 3 For the present invention Figure 2 Partial enlarged view A.

[0019] Figure 4 It is a structural view of the chemical agent delivery unit of the present invention.

[0020] Figure 5 It is a top view of the whole of the present invention.

[0021] Figure 6 For the present invention Figure 5 Full sectional view A-A.

[0022] Figure 7 For the present invention Figure 5 Full sectional view B-B.

[0023] Figure 8 It is a three-dimensional view of the whole of the present invention.

[0024] In the figure: 1. Mixing kettle; 11. Kettle body; 12. Kettle cover; 2. Sewage conveying unit; 21. Three-way pipe; 22. Valve seat; 23. Reversing valve core; 3. Chemical agent conveying unit; 31. Chemical agent tank; 32. First spring; 33. Bellows; 4. Adjusting unit; 41. Impeller; 42. Opening and closing assembly; 43. Isolation box; 111. Support leg; 112. Accommodating cylinder; 211. Liquid channel; 212. Drainage channel; 213. Return channel; 214. Support frame; 231. T-shaped channel; 232. Gear rod; 311. Chemical agent adding pipe; 312. Piston rod; 313. Notch; 314. Rack; 315. Chemical agent feeding port; 411. Transmission rod; 421. Adjusting disk; 422. Adjusting port; 423. Adjusting block; 424. Second spring; 4211. Connecting frame; 4212. Limiting strip; 4231. Limiting groove; 431. Conveying port; 432. Converging pipe. Detailed implementation mode

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation mode of the present invention in conjunction with the drawings of the specification.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it an embodiment that is separately or selectively mutually exclusive with other embodiments.

[0028] Embodiment 1 Refer to Figures 1 to 8 , which is the first embodiment of the present invention. This embodiment provides a sewage treatment device for sheep farms, which includes a mixing kettle 1, including a kettle body 11 and a kettle cover 12 arranged on the top of the kettle body 11; A sewage conveying unit 2 is arranged inside the mixing kettle 1. The sewage conveying unit 2 includes a three-way pipe 21, a pair of valve seats 22 arranged inside the three-way pipe 21, and a reversing valve core 23 arranged between the valve seats 22; A chemical agent conveying unit 3 is sleeved on the outer wall of the three-way pipe 21, including a chemical agent tank 31, first springs 32 arranged around the bottom of the chemical agent tank 31, and a bellows 33 arranged on the lower surface of the chemical agent tank 31; The adjusting unit 4 includes an impeller 41 disposed at the bottom of the reversing valve core 23, an opening and closing assembly 42 disposed at the bottom of the impeller 41, and an isolation box 43 sleeved outside the opening and closing assembly 42.

[0029] Furthermore, the kettle body 11 includes a plurality of support legs 111 disposed at its bottom, and a plurality of receiving cylinders 112 disposed at the bottom of the inner cavity of the kettle body 11; The opening of the three-way pipe 21 penetrates and extends out of the kettle body 11 and the kettle cover 12.

[0030] Furthermore, the three-way pipe 21 includes a liquid inlet channel 211, a liquid discharge channel 212 disposed below the liquid inlet channel 211, a reflux channel 213 disposed between the liquid inlet channel 211 and the liquid discharge channel 212, and a pair of support frames 214 disposed inside the liquid discharge channel 212; the liquid discharge channel 212 extends laterally; The valve seats 22 are fixed and symmetrically distributed inside the liquid inlet channel 211 and the liquid discharge channel 212 respectively; both sides of the outer wall of the reversing valve core 23 are closely attached to the sealing surfaces on the valve seats 22.

[0031] Furthermore, the reversing valve core 23 includes a T-shaped channel 231 disposed inside it, and a pair of gear rods 232 disposed on both sides of the outer wall of the reversing valve core 23; the gear rods 232 penetrate through the outer wall of the three-way pipe 21.

[0032] Furthermore, the medicine box 31 includes a medicine adding pipe 311 disposed at its top, a plurality of piston rods 312 disposed at the bottom of the medicine box 31, a notch 313 disposed on one side of the medicine box 31, racks 314 disposed on both side walls of the notch 313, and a medicine delivery port 315 disposed at the bottom of the medicine box 31.

[0033] Furthermore, the impeller 41 includes a transmission rod 411 disposed at its center; the opening and closing assembly 42 is fixedly connected to the bottom of the transmission rod 411.

[0034] Furthermore, the opening and closing assembly 42 includes an adjusting disc 421, an adjusting opening 422 penetrating through the middle of the adjusting disc 421, adjusting blocks 423 disposed on both sides of the adjusting opening 422, and a second spring 424 disposed at one end of the adjusting blocks 423; The adjusting disc 421 includes a connecting frame 4211 disposed on its surface, and a plurality of limiting strips 4212 disposed between the connecting frames 4211; The adjusting block 423 includes a limiting groove 4231 disposed at its bottom.

[0035] Furthermore, the isolation box 43 includes a delivery port 431 disposed at its bottom, and a converging pipe 432 disposed on the side wall of the isolation box 43; the adjusting disc 421 fits against the bottom of the inner cavity of the isolation box 43; the transmission rod 411 penetrates into the isolation box 43.

[0036] It should be noted that the mixing tank 1 contains a sewage delivery unit 2 and a chemical delivery unit 3. The sewage and chemicals are mixed by the adjustment unit 4 and sent to the next process, such as flocculation, disinfection, etc. The tank body 11 is cylindrical, and at least three support legs 111 are fixed at the bottom of the tank body 11, which can support the entire sewage treatment device. At least one receiving cylinder 112 is also fixed at the bottom of the inner cavity of the mixing tank 1. In this embodiment, there are three. A first spring 32 is installed inside the receiving cylinder 112. The upper end of the first spring 32 contacts the piston rod 312 fixed to the bottom of the chemical tank 31. The lower part of the piston rod 312 is inserted into the receiving cylinder 112, and an approximate cylinder structure is formed between the two, which can prevent the chemical tank 31 from being dislocated from above. It should be noted that the number and position of the piston rods 312 are the same as those of the receiving cylinders 112.

[0037] When the chemical tank 31 is filled with chemicals, the first spring 32 is in different compression states with the change of weight. Especially during the continuous use of the chemicals, as the chemicals are continuously reduced, the first spring 32 will continuously support the chemical tank 31, enabling the liquid level of the chemicals to remain at the same height. Therefore, when the chemicals are delivered to the sewage, the pressure at which the liquid flows out is in a relatively stable state.

[0038] Preferably, the tank cover 12 is fixed to the opening of the tank body 11 by bolts, which can protect and support the components inside the mixing tank 1.

[0039] Preferably, the tee pipe 21 is in a T shape and is composed of two intersecting channels. The uppermost one is the liquid inlet channel 211 for the input of sewage. Similarly, the lowermost liquid discharge channel 212 is for the discharge of sewage. The horizontally extending side channel of the tee pipe 21 is the return channel 213. When the liquid inlet channel 211 and the liquid discharge channel 212 are not connected, the sewage can return to the original tank through the return channel 213, which can prevent the sewage without added chemicals from mixing into the tank with added chemicals, affecting the ratio of chemicals and sewage, and making it difficult to ensure the effectiveness of sewage treatment.

[0040] In addition, for the convenience of the input and output of chemicals and sewage, the liquid inlet channel 211 penetrates through the tank cover 12 from above, the liquid discharge channel 212 penetrates through the bottom of the tank body 11, and the return channel 213 penetrates through the side wall of the tank body 11.

[0041] On the inner wall of the tee 21 at the position of the liquid discharge channel 212, a pair of support frames 214 are also fixed. There are through holes in the centers of the two support frames 214, and an impeller 41 can be inserted between them. Specifically, the transmission rod 411 passes through the center of the impeller 41 and is fixed thereto, and the two ends of the transmission rod 411 are respectively inserted into the through holes in the centers of the support frames 214. When sewage flows through the impeller 41, the impeller 41 will rotate accordingly. When the sewage flow rate changes, the rotation speed of the impeller 41 will also become faster or slower accordingly.

[0042] Preferably, a valve seat 22 is also fixed at the intersection position of the two channels in the tee 21. The two valve seats 22 are symmetrically distributed and are respectively fixed on the inner wall of the lower end of the liquid inlet channel 211 and the inner wall of the upper end of the liquid discharge channel 212.

[0043] A reversing valve core 23 is also installed between the two valve seats 22. The reversing valve core 23 is spherical, and its outer wall contacts the sealing end of the valve seat 22. A T-shaped channel 231 is also opened inside the reversing valve core 23, and its structure is similar to that inside the tee 21. As the reversing valve core 23 rotates, it changes from the initial state of connecting the liquid inlet channel 211 and the liquid discharge channel 212 to connecting the liquid inlet channel 211 and the reflux channel 213.

[0044] A pair of gear rods 232 are also fixed on both sides of the reversing valve core 23. The two gear rods 232 are symmetrically distributed with respect to the plane where the T-shaped channel 231 is located. The two gear rods 232 can penetrate through the side wall of the tee 21. Specifically, the position where the gear rods 232 penetrate through is at the overlapping part of the two intersecting channels.

[0045] Preferably, the chemical agent tank 31 is integrally in the shape of a cylinder with a notch 313 and can accommodate chemicals inside. A chemical agent adding pipe 311 is fixed on its top, and the pipe is communicated with the inside of the chemical agent tank 31. When the chemical agent is insufficient, chemicals can be poured into the chemical agent adding pipe 311 for replenishment. It should be noted that the chemical agent adding pipe 311 penetrates through the kettle cover 12 and extends to the outside. When the chemical agent tank 31 moves axially along the accommodating cylinder 112, the chemical agent adding pipe 311 also moves accordingly.

[0046] Preferably, the chemical agent adding pipe 311 can be a flexible pipe.

[0047] A notch 313 is provided on one side of the chemical agent tank 31. In this embodiment, the notch 313 is in the shape of a waist, which allows the center of the chemical agent tank 31 to pass through the tee 21 and will not be blocked by the reflux channel 213 when moving axially along the accommodating cylinder 112. The side walls of the waist-shaped notch 313 are flat and parallel to each other. A rack 314 is fixed at the position of the two side walls close to the gear rod 232. The rack 314 can be engaged with the teeth on the adjacent gear rod 232. When the chemical agent tank 31 moves axially along the accommodating cylinder 112, it can drive the reversing valve core 23 to rotate, thereby realizing the switching of the internal channels of the tee 21.

[0048] It should be noted that by selecting different heights of the rack 314, the trigger point for setting the remaining amount of the medicament can be used, so that after reaching the threshold value, the reversing valve core 23 rotates to complete the switching of the channels of the three-way pipe 21. The blank area where the gear rod 232 is located is used to prevent the medicament from driving the reversing valve core 23 to rotate when the trigger point is not reached.

[0049] Preferably, a medicine delivery port 315 is also fixed at the bottom of the medicine tank 31. The inside of the medicine delivery port 315 is communicated with the inner cavity of the medicine tank 31, and one end of the corrugated pipe 33 is connected to the medicine delivery port 315, so that the medicament can enter the isolation box 43 through the corrugated pipe 33.

[0050] Preferably, inside the liquid discharge channel 212, a separation box 43 is also provided directly below the two support frames 214. The separation box 43 is cylindrical and can isolate the medicament from being contaminated. Its side wall is fixed to the inner wall of the liquid discharge channel 212 through a connecting rod. The converging pipe 432 is fixed to the outer wall facing the medicine delivery port 315. The inner wall of the converging pipe 432 is communicated with the inner cavity of the separation box 43. It should be noted that the outer end of the converging pipe 432 penetrates through the outer wall of the liquid discharge channel 212 and extends towards the medicine delivery port 315, and the other end of the corrugated pipe 33 is fixedly connected to the pipe orifice of the converging pipe 432. Therefore, the medicament will flow into the separation box 43, and the corrugated pipe 33 can expand and contract as the medicine tank 31 moves.

[0051] A through delivery port 431 is also opened at the bottom of the separation box 43. The medicament inside the separation box 43 will flow into the liquid discharge channel 212 through the delivery port 431 and be fully mixed with the sewage inside the liquid discharge channel 212.

[0052] Preferably, at least two connecting frames 4211 distributed oppositely are fixed at the edge position of the upper end surface of the adjusting disc 421. In this embodiment, there are four connecting frames 4211 distributed circumferentially. The connecting frames 4211 are in the shape of an L-shaped handle, and each connecting frame 4211 points to the center of the adjusting disc 421 and is connected to each other at the center position. The transmission rod 411 at the bottom of the impeller 41 is fixedly connected to the connection center of the connecting frames 4211. When the impeller 41 rotates, the adjusting disc 421 will also rotate accordingly.

[0053] It should be noted that the lower end surface of the adjusting disc 421 is attached to the bottom of the inner cavity of the separation box 43.

[0054] At the exact center of the adjusting disc 421, there is also an adjusting opening 422, which is aligned with the conveying opening 431. On both sides of the opening of the adjusting opening 422, there are at least two symmetrically distributed limiting bars 4212 fixed. In this embodiment, two limiting bars 4212 are used. The limiting bars 4212 both point to the center of the adjusting opening 422. The cross-section of the limiting bar 4212 in this embodiment is dovetail-shaped, which can cooperate with the limiting groove 4231 opened at the bottom of the adjusting block 423. Therefore, the limiting groove 4231 is also dovetail-shaped. One adjusting block 423 corresponds to one limiting bar 4212, and the two adjusting blocks 423 can exactly block the adjusting opening 422.

[0055] A second spring 424 is also fixed between the longitudinal bars of the adjusting block 423 and the limiting bar 4212, so that the two adjusting blocks 423 are in close contact with each other and block the adjusting opening 422. When the impeller 41 rotates, the adjusting disc 421 will also rotate. Due to the centrifugal force, the adjusting block 423 overcomes the acting force of the second spring 424 and opens. The rotation speed determines the magnitude of the centrifugal force, thereby controlling the opening degree of the adjusting opening 422, and then regulating the flow rate of the chemical agent flowing out.

[0056] In summary, the greater the sewage flow rate, the greater the discharge flow rate of the chemical agent, and vice versa. As the chemical agent in the chemical agent tank 31 becomes lighter with the consumption of the chemical agent, the first spring 32 can gradually lift the chemical agent tank 31. During this process, the liquid level of the chemical agent is in a relatively stable state, that is, the pressure level of the discharged chemical agent fluctuates less, laying a foundation for the approximate proportional change of the sewage flow rate and the chemical agent flow rate.

[0057] When the chemical agent is consumed to a certain extent, the rack 314 on the chemical agent tank 31 can contact the gear rod 232. Then, as the consumption further increases, the reversing valve core 23 will slowly rotate until sewage flows into the return channel 213. At this time, the sewage flow rate becomes smaller and the chemical agent flow rate also becomes smaller. Personnel should pay attention to the sewage flowing out of the return channel 213, indicating that the chemical agent needs to be added at this time.

[0058] After adding the chemical agent, the chemical agent tank 31 will descend, enabling the reversing valve core 23 to rotate back, so that the sewage can normally enter the drainage channel 212.

[0059] Preferably, the shape of the chemical agent tank 31 can also be square, conical, etc., which can be determined according to actual needs.

[0060] It should be further noted that the rotation of the impeller 41 driven by the sewage is directly related to the regulating block 423 that controls the flow area of the chemical agent. Therefore, the change in the rotational speed of the impeller 41 can be directly reflected in the change in the flow area of the chemical agent. There is a linear relationship between the rotational speed of the impeller 41 and the sewage flow rate, and between the rotational speed of the impeller 41 and the flow area of the chemical agent. The change in the sewage flow rate will cause a proportional change in the rotational speed of the impeller 41, and further cause a proportional change in the flow area of the chemical agent.

[0061] Assume that the reduction in the sewage flow rate causes the rotational speed of the impeller 41 to decrease. If there is a linear relationship between the rotational speed of the impeller 41 and the sewage flow rate, it can be expressed as:

[0062] Where: is the rotational speed of the impeller; is the sewage flow rate; is the proportionality constant.

[0063] If there is also a linear relationship between the rotational speed of the impeller 41 and the flow area of the chemical agent, it can be expressed as:

[0064] Where: is the flow area of the chemical agent; is the proportionality constant.

[0065] Combining these two equations, the relationship between the flow area of the chemical agent and the sewage flow rate can be obtained:

[0066]

[0067] Where is the new proportionality constant.

[0068] The flow rate of the chemical agent is related to the flow area and the average flow velocity of the chemical agent :

[0069] If the flow velocity of the chemical agent remains constant (for example, under a constant pressure), then the flow rate of the chemical agent will be proportional to the flow area and thus also proportional to the sewage flow rate .

[0070] In summary, the present invention can timely adjust the flow rate of chemical agent delivery when the sewage flow rate changes, maintain the stability of the sewage chemical agent ratio, and in addition, without the aid of a pump, it can also stabilize the delivery pressure of the chemical agent even when the chemical agent is continuously decreasing. When the remaining amount of the chemical agent reaches a certain threshold, it can change the sewage delivery action to remind the operator to replenish the chemical agent in time.

[0071] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A sewage treatment device for sheep farms, characterized in that: including, a mixing kettle (1), comprising a kettle body (11) and a kettle cover (12) arranged on the top of the kettle body (11); a sewage conveying unit (2) arranged inside the mixing kettle (1), the sewage conveying unit (2) comprising a tee pipe (21), a pair of valve seats (22) arranged inside the tee pipe (21), and a reversing valve core (23) arranged between the valve seats (22); a chemical agent conveying unit (3) sleeved on the outer wall of the tee pipe (21), comprising a chemical agent tank (31), a first spring (32) arranged around the bottom of the chemical agent tank (31), and a corrugated pipe (33) arranged on the lower surface of the chemical agent tank (31); an adjusting unit (4), comprising an impeller (41) arranged at the bottom of the reversing valve core (23), an opening and closing assembly (42) arranged at the bottom of the impeller (41), and an isolation box (43) sleeved outside the opening and closing assembly (42).

2. The sewage treatment device for sheep farms according to claim 1, characterized in that: the kettle body (11) comprises a plurality of support legs (111) arranged at its bottom and a plurality of accommodating cylinders (112) arranged at the bottom of the inner cavity of the kettle body (11); the openings of the tee pipe (21) penetrate and extend outside the kettle body (11) and the kettle cover (12).

3. The sewage treatment device for sheep farms according to claim 2, characterized in that: the tee pipe (21) comprises a liquid inlet channel (211), a liquid discharge channel (212) arranged below the liquid inlet channel (211), a reflux channel (213) arranged between the liquid inlet channel (211) and the liquid discharge channel (212), and a pair of support frames (214) arranged inside the liquid discharge channel (212); the liquid discharge channel (212) extends laterally; the valve seats (22) are respectively fixed and symmetrically distributed inside the liquid inlet channel (211) and the liquid discharge channel (212); the two sides of the outer wall of the reversing valve core (23) are closely attached to the sealing surfaces on the valve seats (22).

4. The sewage treatment device for sheep farms according to claim 3, characterized in that: the reversing valve core (23) comprises a T-shaped channel (231) arranged inside it and a pair of gear rods (232) arranged on both sides of the outer wall of the reversing valve core (23); the gear rods (232) penetrate through the outer wall of the tee pipe (21).

5. The sewage treatment device for sheep farms according to claim 4, characterized in that: the chemical agent tank (31) comprises a chemical agent adding pipe (311) arranged at its top, a plurality of piston rods (312) arranged at the bottom of the chemical agent tank (31), a notch (313) arranged on one side of the chemical agent tank (31), racks (314) arranged on both side walls of the notch (313), and a chemical agent feeding port (315) arranged at the bottom of the chemical agent tank (31).

6. The sewage treatment device for sheep farms according to claim 5, characterized in that: The impeller (41) includes a transmission rod (411) disposed at its center; the opening and closing assembly (42) is fixedly connected to the bottom of the transmission rod (411).

7. The sewage treatment device for sheep farms according to claim 6, wherein: The opening and closing assembly (42) includes an adjustment disk (421), an adjustment opening (422) penetrating through the middle of the adjustment disk (421), adjustment blocks (423) disposed on both sides of the adjustment opening (422), and a second spring (424) disposed at one end of the adjustment blocks (423); The adjustment disk (421) includes a connecting frame (4211) disposed on its surface, and a plurality of limiting strips (4212) disposed between the connecting frames (4211); The adjustment block (423) includes a limiting groove (4231) disposed at its bottom.

8. The sewage treatment device for sheep farms according to claim 7, wherein: The isolation box (43) includes a delivery port (431) disposed at its bottom, and a converging pipe (432) disposed on the side wall of the isolation box (43); the adjustment disk (421) fits against the bottom of the inner cavity of the isolation box (43); the transmission rod (411) penetrates into the isolation box (43).

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