Farm wastewater treatment device

Abstract

The invention belongs to the technical field of sewage treatment, and particularly discloses a livestock farm wastewater treatment device which comprises a reaction box, a water distribution pipeline is horizontally arranged at the bottom in the reaction box, a gas collection chamber is horizontally and fixedly arranged on the upper portion in the reaction box, and the two sides of the gas collection chamber are communicated with self-discharging type single-circulation three-phase separators. Two layers of self-discharging type single-circulation three-phase separators are arranged on each side in an array mode, the two layers of self-discharging type single-circulation three-phase separators are distributed in a staggered mode, a cam type reciprocating driving mechanism is arranged above each layer of self-discharging type single-circulation three-phase separator, and a belt type synchronous transmission mechanism is arranged at the position, on the outer side of the reaction box, of one end of each cam type reciprocating driving mechanism. And overflow water outlet grooves are horizontally distributed at the upper end of the reaction box in an array manner. Retention water in a dead zone of the inclined plate is discharged in time through a specific single-circulation discharging mechanism, the overall treatment effect is improved, and the situation that the biogas collection effect is affected due to accumulation and blockage of organic matter is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and specifically refers to a wastewater treatment device for a breeding farm. Background Art

[0002] With the intensive and large-scale development of modern aquaculture, the discharge of aquaculture wastewater has increased dramatically. It is rich in organic matter, nitrogen, phosphorus and other pollutants. If it is discharged directly without treatment, it will seriously pollute the water environment and threaten ecological safety and human health. Therefore, efficient and economical aquaculture wastewater treatment technology has become a key issue that needs to be solved urgently. Among the many wastewater treatment technologies, the upflow anaerobic sludge blanket reactor (UASB) has significant advantages in treating aquaculture wastewater due to its unique structure and operation mechanism. It can efficiently treat high-concentration organic wastewater, especially when it is used in scenes where aquaculture wastewater contains a large amount of organic matter such as animal feces and feed residues. It has strong impact load resistance and can adapt to changes in the breeding environment. At the same time, it can collect biogas resources and reduce the energy cost of the farm.

[0003] The UASB reactor is mainly composed of three parts: the reaction zone, the three-phase separator and the separation and recovery system. The reaction zone is the treatment part of the UASB reactor. The wastewater passes through the reaction zone from bottom to top and fully contacts with the granular sludge. Under the action of anaerobic microorganisms, the organic matter is gradually degraded into biogas, water and other substances. The three-phase separator is located at the top of the reaction zone, usually with a conical or inclined plate structure, and uses the density difference to achieve the separation of gas, liquid and solid phases.

[0004] However, the existing UASB reactor three-phase separator design still has some defects, which restricts the further improvement of its treatment efficiency and stability. The three-phase separator mostly adopts an inclined plate structure. Although it can effectively collect and separate biogas, the space below the inner side of the inclined plate is prone to form a "dead zone". Some sewage is retained in this area. In addition, it is impacted by the rising water flow and bubbles below, and cannot be discharged by gravity downward in time, resulting in the sewage retained in the "dead zone" unable to continue to rise for subsequent treatment, reducing the overall treatment effect. Organic matter is easy to accumulate on the upper surface of the "dead zone", blocking the biogas rising channel, and decomposing to produce impurities such as hydrogen sulfide, reducing the output and quality of biogas. Summary of the invention

[0005] In view of the above situation, the present invention provides a farm wastewater treatment device, which uses a unique single-cycle external discharge mechanism to timely discharge the retained water in the "dead zone" of the inclined plate, thereby improving the overall treatment effect and avoiding the accumulation and blockage of organic matter that affects the collection effect of biogas.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a farm wastewater treatment device, including a reaction box, a water distribution pipeline is horizontally arranged at the bottom of the reaction box for uniform water supply, an air collecting chamber is horizontally fixedly arranged at the upper part of the reaction box for collecting biogas, and self-draining single-cycle three-phase separators are connected on both sides of the air collecting chamber, and the self-draining single-cycle three-phase separators are arranged in an array of two layers on each side, and the two layers of self-draining single-cycle three-phase separators are staggered, and a cam-type reciprocating drive mechanism is arranged above each layer of the self-draining single-cycle three-phase separators, and a belt-type synchronous transmission mechanism is provided at one end of the cam-type reciprocating drive mechanism on the outside of the reaction box, and an overflow water trough is horizontally arranged at the upper end of the reaction box for discharging treated sewage.

[0007] Furthermore, the self-draining single-cycle three-phase separator includes a horizontal baffle, one end of the horizontal baffle is vertically fixed on the outside of the gas collecting chamber, and inclined baffles are symmetrically fixed downward and outward on both side ends of the horizontal baffle, a sliding plate is tightly slidably provided on the upper side of the horizontal baffle, and the sliding plates are symmetrically arranged along the center plane of the horizontal baffle, and a translation plate is fixed downward and outward on the outer end of the sliding plate, and the translation plate is arranged parallel to the inclined baffle. When the two sliding plates are tightly attached, the translation plate is tightly attached to the adjacent inclined baffle, and a connecting plate is hinged at the lower end of the translation plate, and a guide plate is vertically fixed at the lower end of the connecting plate.

[0008] The cam is configured to move the cam face upwards to move the cam face in the direction of rotation with respect to the top of the cam, and the cam face is configured to move the cam face upwards to move the cam face in the direction of rotation with respect to the top of the cam.

[0009] Furthermore, the self-draining single-cycle three-phase separator includes a rotating shaft, a shaft support, a recess and a slide groove, the rotating shaft is fixedly arranged at the lower end of the translation plate, the shaft support is symmetrically fixedly arranged at the two edges of the upper end of the connecting plate, the rotating shaft is tightly attached between the shaft supports and is rotatably connected to the shaft supports, the arc surface of the rotating shaft is always tightly attached to the upper end surface of the connecting plate, the arc surface of the shaft support is always tightly attached to the lower end surface of the translation plate, so as to realize a sealing setting, the recess is symmetrically arranged at the two edges of the inner side of the guide plate, the recess is adjacent to the connecting plate, and the guide plate A groove is horizontally opened along the middle length direction of the notch, and the slide groove is symmetrically opened at the two inner edges of the lower end of the inclined baffle plate. A slider is tightly slidably arranged in the slide groove, and a slide column is laterally fixed at one end of the slider. The slider is tightly located in the notch, and the slide column is tightly slidably arranged in the groove. A tension spring is arranged in the slide groove, and the two ends of the tension spring are respectively fixedly connected to the inclined baffle plate and the slider to realize the resetting of the slider. When the translation plate is tightly against the adjacent inclined baffle plate, the inner side surface of the connecting plate is tightly against the lower end surface of the inclined baffle plate, and the guide plate is tightly against the inclined baffle plate.

[0010] Furthermore, the cam-type reciprocating drive mechanism includes a transmission shaft and a driven column, the transmission shaft is horizontally arranged above the cam-type reciprocating drive mechanism of each layer, one end of the transmission shaft is rotatably arranged in one side wall of the reaction box, and the other end of the transmission shaft passes through the other side wall of the reaction box, and a cylindrical cam is coaxially fixed to the array on the transmission shaft, the cylindrical cam is located directly above the horizontal baffle, and a spiral bevel is opened on the surface of the cylindrical cam, and the spiral bevel is symmetrically arranged on both sides of the cylindrical cam on one side of the center plane of the horizontal baffle, and horizontal grooves are connected between one end and the other end of the symmetrical spiral bevels, and the connecting structure composed of the horizontal grooves and the spiral bevel is symmetrically arranged on the other section of the surface of the cylindrical cam along the center plane of the horizontal baffle, and the driven column is vertically fixed and arranged in the middle of the upper side of the sliding plate, and the upper end of the driven column slides tightly in the horizontal groove and the spiral bevel, and when the two sliding plates are tightly pressed, the upper ends of the two driven columns are respectively located in the horizontal grooves close to the lower side.

[0011] Furthermore, the belt-type synchronous transmission mechanism includes a transmission pulley, a guide pulley and a motor, the transmission pulley is coaxially fixed on one end of the transmission shaft outside the reaction box, the guide pulley is rotatably arranged outside the reaction box, the guide pulley is horizontally symmetrically arranged between the transmission pulleys, the sides of the transmission pulley and the guide pulley are jointly connected with a belt, the belt is cross-wound between the transmission pulley and the guide pulley to achieve full contact between the transmission pulley and the guide pulley and the belt, the motor is fixed on one side of the reaction box, and the output end of the motor is coaxially fixedly connected to one of the transmission pulleys as a main power source.

[0012] Furthermore, a gas collecting pipe is fixedly connected to the upper side of the gas collecting chamber for collecting and discharging biogas, and gas collecting ports are arranged in arrays on both sides of the gas collecting chamber. The projection of the upper internal space composed of the horizontal baffle and the inclined baffle coincides with the gas collecting port, and the gas collecting port is located above the uppermost window.

[0013] Furthermore, the sliding plate is horizontally and tightly provided with limit plates on both ends of the sliding plate in contact with the reaction box and the gas collecting chamber. The limit plates are respectively fixed on the reaction box and the gas collecting chamber to limit the sliding plate to horizontal movement.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: (1) When the translation plate moves away from the inclined baffle, the opening and closing plate on the translation plate closes to close the window. At this time, the lower end of the translation plate drives the connecting plate to move outward, and then drives the guide plate to move. Due to the pre-tension of the tension spring, the slider is always tightened toward the inside of the slide groove, so that the inner side of the guide plate is always in close contact with the inner lower edge of the inclined baffle. The translation plate, connecting plate, guide plate and inclined baffle form a closed space. The low air pressure drives the opening and closing plate on the inclined baffle to open, so that the retained sewage in the inclined baffle enters the closed space from the opening and closing plate, filling the closed space. Since the opened opening and closing plate is tilted downward, some bubbles are brought in and then bounced back to the inside of the inclined baffle by the opening and closing plate tilted downward, preventing the bubbles from entering the closed space. Then the translation plate remains stationary and waits for the opening and closing plate on the inclined baffle to be gradually closed by the torsion spring. Then the translation plate begins to move inward, and the opening and closing plate on the translation plate is flushed open under the action of water pressure, so that the retained sewage flows into the external environment until the translation plate is in close contact with the inclined baffle, thereby completing the replacement of the retained sewage and avoiding the adverse effects of continuous retention of sewage and organic matter.

[0015] (2) Through the linkage of the translation plate, the connecting plate and the guide plate, the guide plate is expanded to block the water flow below during water absorption, preventing the large fast bubbles below the guide plate from directly rushing into the closed space, and preventing the new sewage below from "jumping in line" and entering the closed space first, so that the closed space is filled with retained sewage, thereby achieving complete replacement of retained sewage, avoiding the residue of retained sewage and biogas leakage, and the replacement process does not affect the original sewage treatment process and treatment effect.

[0016] (3) The operator can judge whether to start the water exchange process based on the actual sewage retention and blockage situation. Therefore, the water exchange function in this device does not need to be turned on all the time, and it can be turned off after the water exchange is completed, thereby effectively saving energy and having practical application value. All the self-draining single-cycle three-phase separators of this device only need one motor to drive through a belt-type synchronous transmission mechanism. The structure is simple and can effectively reduce the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a first stereoscopic structural schematic diagram of a farm wastewater treatment device proposed by the present invention.

[0018] Figure 2 This is a second stereoscopic structural schematic diagram of a farm wastewater treatment device proposed by the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of part A.

[0020] Figure 4 for Figure 2 Enlarged view of part B.

[0021] Figure 5 This is a schematic structural diagram of an air collecting chamber of a farm wastewater treatment device proposed by the present invention.

[0022] Figure 6 This is a first stereoscopic structural schematic diagram of a self-draining single-circulation three-phase separator of a farm wastewater treatment device proposed by the present invention.

[0023] Figure 7 This is a second stereoscopic structural schematic diagram of a self-draining single-circulation three-phase separator of a farm wastewater treatment device proposed by the present invention.

[0024] Figure 8 for Figure 7 Enlarged view of part C.

[0025] Fig. 9 This is a schematic diagram of the exploded structure of the positional relationship between the rotating shaft and the shaft support of a farm wastewater treatment device proposed by the present invention.

[0026] Fig.10 This is a schematic diagram of the exploded structure of the positional relationship between the cylindrical trough and the hollow column of a farm wastewater treatment device proposed by the present invention.

[0027] Among them, 1. reaction box, 2. water distribution pipeline, 3. gas collecting chamber, 31. gas collecting port, 32. limit plate, 33. gas collecting pipe, 4. self-draining single-cycle three-phase separator, 41. horizontal baffle, 42. inclined baffle, 421. slide, 43. sliding plate, 44. translation plate, 441. rotating shaft, 45. guide plate, 451. notch, 452. groove, 46. connecting plate, 461. shaft support, 47. window, 48 , opening and closing plate, 481, hollow column, 482, torsion spring, 483, cylindrical groove, 49, slider, 491, sliding column, 492, tension spring, 5, cam type reciprocating drive mechanism, 51, transmission shaft, 52, cylindrical cam, 53, horizontal groove, 54, spiral inclined groove, 55, driven column, 6, belt type synchronous transmission mechanism, 61, transmission pulley, 62, guide pulley, 63, belt, 64, motor, 7, overflow water tank.

[0028] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the present invention proposes a farm wastewater treatment device, including a reaction box 1, a water distribution pipeline 2 is horizontally arranged at the bottom of the reaction box 1, a gas collecting chamber 3 is horizontally fixedly arranged at the upper part of the reaction box 1, and self-draining single-cycle three-phase separators 4 are connected on both sides of the gas collecting chamber 3. The self-draining single-cycle three-phase separators 4 are arranged in an array of two layers on each side, and the two layers of self-draining single-cycle three-phase separators 4 are staggered. A cam-type reciprocating drive mechanism 5 is arranged above each layer of the self-draining single-cycle three-phase separators 4, and a belt-type synchronous transmission mechanism 6 is arranged at one end of the cam-type reciprocating drive mechanism 5 on the outside of the reaction box 1, and an overflow water trough 7 is horizontally arranged at the upper end of the reaction box 1.

[0032] Among them, the self-draining single-cycle three-phase separator 4 includes a horizontal baffle 41, one end of the horizontal baffle 41 is vertically fixed on the outside of the gas collecting chamber 3, and the two side ends of the horizontal baffle 41 are symmetrically fixed with inclined baffles 42 facing downward and outward. The upper side of the horizontal baffle 41 is tightly slidably provided with a sliding plate 43, and the sliding plate 43 is symmetrically arranged along the center plane of the horizontal baffle 41. The outer end of the sliding plate 43 is fixed downward and outward with a translation plate 44, and the translation plate 44 is arranged parallel to the inclined baffle 42. When the two sliding plates 43 are tightly pressed, the translation plate 44 is tightly pressed with the adjacent inclined baffle 42. The lower end of the translation plate 44 is hinged with a connecting plate 46, and the lower end of the connecting plate 46 is vertically fixed with a guide plate 45. The self-draining single-cycle three-phase separator 4 includes a window 47, and the window 47 array The uppermost window 47 is opened on the surface of the translation plate 44 and the inclined baffle 42, and is away from the sliding plate 43 and the horizontal baffle 41. The lower end surface of the window 47 is horizontally arranged, and the upper end surface of the window 47 is perpendicular to the translation plate 44 and the inclined baffle 42. An opening and closing plate 48 is tightly arranged in the window 47, and hollow columns 481 are fixedly arranged on both sides of the upper end of the opening and closing plate 48. The translation plate 44 and the inclined baffle 42 are provided with cylindrical grooves 483 at positions directly opposite to the hollow columns 481. The hollow columns 481 are rotatably arranged in the cylindrical grooves 483. The arc surface of the upper end of the opening and closing plate 48 is always tightly attached to the upper end surface of the window 47. When the lower end surface of the opening and closing plate 48 is tightly attached to the lower end surface of the window 47, the inner and outer side surfaces of the opening and closing plate 48 are aligned with the inner and outer side surfaces of the translation plate 44 and the inner and outer side surfaces of the inclined baffle 42. The two side surfaces overlap, and a torsion spring 482 is tightly arranged in the hollow column 481. One end of the torsion spring 482 is inserted into the opening and closing plate 48, and the other end of the torsion spring 482 is inserted into the translation plate 44 and the inclined baffle 42 at the inner end of the cylindrical groove 483. The self-draining single-cycle three-phase separator 4 includes a rotating shaft 441, a shaft support 461, a recess 451 and a slide groove 421. The rotating shaft 441 is fixedly arranged at the lower end of the translation plate 44, and the shaft support 461 is symmetrically fixedly arranged at the two edges of the upper end of the connecting plate 46. The rotating shaft 441 is tightly attached to the shaft support 461 and is rotatably connected to the shaft support 461. The arc surface of the rotating shaft 441 is always tightly attached to the upper end surface of the connecting plate 46, and the arc surface of the shaft support 461 is always tightly attached to the lower end surface of the translation plate 44. The recess 451 is symmetrically opened. It is arranged on the two inner edges of the guide plate 45, the recess 451 is adjacent to the connecting plate 46, the guide plate 45 is horizontally provided with a recess 452 along the middle length direction of the recess 451, the slide groove 421 is symmetrically arranged on the two inner edges of the lower end of the inclined baffle 42, a slider 49 is tightly slidably arranged in the slide groove 421, a slide column 491 is laterally fixed at one end of the slider 49, the slider 49 is tightly located in the recess 451, the slide column 491 is tightly slidably arranged in the recess 452, a tension spring 492 is arranged in the slide groove 421, and the two ends of the tension spring 492 are respectively fixedly connected to the inclined baffle 42 and the slider 49, when the translation plate 44 is tightly against the adjacent inclined baffle 42, the inner side surface of the connecting plate 46 is tightly against the lower end surface of the inclined baffle 42 and the guide plate 45 is tightly against the inclined baffle 42.

[0033] The cam-type reciprocating drive mechanism 5 includes a transmission shaft 51 and a driven column 55. The transmission shaft 51 is horizontally arranged above the cam-type reciprocating drive mechanism 5 on each layer. One end of the transmission shaft 51 is rotatably arranged in one side wall of the reaction box 1, and the other end of the transmission shaft 51 penetrates the other side wall of the reaction box 1. A cylindrical cam 52 is coaxially fixed on the transmission shaft 51. The cylindrical cam 52 is located just above the horizontal baffle 41. A spiral bevel groove 54 is opened on the surface of the cylindrical cam 52. The spiral bevel groove 54 is symmetrically arranged on one side of the center plane of the horizontal baffle 41. On both sides of the cylindrical cam 52, horizontal grooves 53 are connected between one end and the other end of the symmetrical spiral bevel grooves 54. The connecting structure composed of the horizontal grooves 53 and the spiral bevel grooves 54 is symmetrically arranged on the other surface of the cylindrical cam 52 along the center plane of the horizontal baffle plate 41. The driven column 55 is vertically fixed in the middle of the upper side of the sliding plate 43. The upper end of the driven column 55 slides closely in the horizontal grooves 53 and the spiral bevel grooves 54. When the two sliding plates 43 are in close contact, the upper ends of the two driven columns 55 are respectively located in the horizontal grooves 53 close to the lower side.

[0034] The belt-type synchronous transmission mechanism 6 includes a transmission pulley 61, a guide pulley 62 and a motor 64. The transmission pulley 61 is coaxially fixed on one end of the transmission shaft 51 outside the reaction box 1. The guide pulley 62 is rotatably arranged outside the reaction box 1. The guide pulley 62 is horizontally symmetrically arranged between the transmission pulleys 61. The sides of the transmission pulley 61 and the guide pulley 62 are jointly connected with a belt 63. The belt 63 is cross-wound between the transmission pulley 61 and the guide pulley 62. The motor 64 is fixed on one side of the reaction box 1. The output end of the machine 64 is coaxially fixedly connected to one of the transmission pulleys 61, and a gas collecting pipe 33 is fixedly connected to the upper side of the gas collecting chamber 3. Gas collecting ports 31 are arranged in an array on both sides of the gas collecting chamber 3. The projection of the upper internal space composed of the horizontal baffle 41 and the inclined baffle 42 coincides with the gas collecting port 31. The gas collecting port 31 is located above the uppermost window 47. The sliding plate 43 is horizontally and tightly provided with limit plates 32 on the upper sides of both ends in contact with the reaction box 1 and the gas collecting chamber 3. The limit plates 32 are fixedly arranged on the reaction box 1 and the gas collecting chamber 3 respectively.

[0035] During specific use, the sewage in the water distribution pipeline 2 passes upward through the self-draining single-cycle three-phase separator 4, and the biogas generated by the reaction gathers into large bubbles and is blocked by the inclined baffle 42, the guide plate 45 in the initial state and the horizontal baffle 41, and is then collected and discharged through the gas collecting port 31, the gas collecting chamber 3 and the gas collecting pipe 33. By reasonably setting the exhaust speed of the gas collecting pipe 33, a stable air chamber is formed between below the horizontal baffle 41 and the upper end of the uppermost window 47, and the sewage will not continue to move upward inside. The sewage continues to move upward through the self-draining single-cycle three-phase separator 4, and after sedimentation and separation of the sludge, it is collected through the overflow tank 7 and flows into the next treatment link. If the running time is long, a "dead zone" is formed in the middle and upper areas of the inner space of the horizontal baffle 41 and the inclined baffle 42, resulting in slow flow of sewage and organic matter in the sewage. Slowly accumulate, block the rising channel of biogas, and reduce the treatment effect. Therefore, it is necessary to replace the sewage in the "dead zone" in time to promote flow, turn on the motor 64 to drive one of the transmission pulleys 61 to rotate, and drive all the transmission pulleys 61 and the transmission shaft 51 to rotate through the belt 63 and the guide pulley 62. The cylindrical cam 52 rotates to make the driven column 55 start to move under the limit of the spiral chute 54, the horizontal groove 53 and the limit plate 32. The two driven columns 55 are initially located in the two horizontal grooves 53 close to each other on the lower side. When the driven columns 55 move to the intersection of the spiral chute 54 and the horizontal groove 53, they start to move away from each other through the limit of the spiral chute 54 until they move to the horizontal groove 53 far away from the lower side. They will stay still in the horizontal groove 53 for a period of time and then approach each other through the spiral chute 54.

[0036] By the above movement law, the translation plate 44 is driven to first move away from the inclined baffle 42 to the maximum distance, then stop, then approach the inclined baffle 42 until it contacts it, and then stop again, and the above movement is repeated. When the translation plate 44 moves away from the inclined baffle 42, due to the torque of the torsion spring 482 and the pressure of the water outside the translation plate 44, the opening and closing plate 48 on the translation plate 44 is closed to close the window 47. Since the lower end surface of the window 47 is horizontal, the opening and closing plate 48 will no longer continue to rotate inward. At this time, the lower end of the translation plate 44 drives the connecting plate 46 to move outward, and then drives the guide plate 45 to move. Due to the pre-tensioning force of the tension spring 492, the slider 49 is always pulled toward The slide groove 421 is tightened, so that the slide column 491 always exerts a force on the guide plate 45 toward the inclined baffle 42 when moving in the groove 452, so that the inner side of the guide plate 45 is always in close contact with the inner lower edge line of the inclined baffle 42, and drives the guide plate 45 from being completely in close contact with the inclined baffle 42 to unfolding downward. The translation plate 44, the connecting plate 46, the guide plate 45 and the inclined baffle 42 form a closed space. As the space becomes larger, the low air pressure drives the opening and closing plate 48 on the inclined baffle 42 to open, so that the retained sewage in the inclined baffle 42 enters the closed space from the opening and closing plate 48 to fill the closed space. The guide plate 45 is tilted downward, so some bubbles are brought in and then rebounded back to the inside of the inclined baffle plate 42 by the tilted downward opening and closing plate 48, preventing the bubbles from entering the closed space. At the same time, the guide plate 45 is unfolded to block the water flow below, preventing the larger fast bubbles below the guide plate 45 from directly rushing into the closed space, and also preventing the new sewage below from "jumping in line" and entering the closed space first, so that the closed space is full of stagnant sewage. Then the translation plate 44 stops moving and remains stationary for a period of time. At this time, the opening and closing plate 48 on the inclined baffle plate 42 is gradually closed by the torsion spring 482, and then the translation plate 44 starts to move inward. The plate 48 is closed, so that the opening and closing plate 48 on the translation plate 44 is opened under the action of water pressure, so that the retained sewage flows into the external environment until the translation plate 44 is in close contact with the inclined baffle plate 42. At this time, the retained sewage all flows into the outside of the translation plate 44, and then the translation plate 44 is stationary for a period of time, and the opening and closing plate 48 on the translation plate 44 is gradually closed, thereby completing one cycle and continuing to the next cycle. When the water change is completed, it is only necessary to turn off the motor 64 within the time interval when the driven column 55 is located in the two horizontal grooves 53 close to the lower side. At this time, the translation plate 44, the inclined baffle plate 42 and the guide plate 45 are completely in close contact, and the normal three-phase separation is not affected.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0039] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A farm wastewater treatment device, comprising a reaction box (1), characterized in that: A water distribution pipeline (2) is horizontally arranged at the bottom of the reaction box (1), and a gas collecting chamber (3) is horizontally fixedly arranged at the upper part of the reaction box (1). Self-draining single-circulation three-phase separators (4) are arranged on both sides of the gas collecting chamber (3). The self-draining single-circulation three-phase separators (4) are arranged in an array of two layers on each side. The two layers of self-draining single-circulation three-phase separators (4) are staggered. A cam-type reciprocating drive mechanism (5) is arranged above each layer of the self-draining single-circulation three-phase separators (4). One end of the cam-type reciprocating drive mechanism (5) is provided with a belt-type synchronous transmission mechanism (6) on the outside of the reaction box (1). Overflow outlet troughs (7) are horizontally arranged in an array at the upper end of the reaction box (1).

2. A farm wastewater treatment device according to claim 1, characterized in that: The self-draining single-cycle three-phase separator (4) comprises a horizontal baffle (41), one end of the horizontal baffle (41) is vertically fixed on the outside of the gas collecting chamber (3), and inclined baffles (42) are symmetrically fixed downward and outward on both side ends of the horizontal baffle (41), a sliding plate (43) is slidably provided on the upper side of the horizontal baffle (41), and the sliding plate (43) is symmetrically arranged along the center plane of the horizontal baffle (41), and a translation plate (44) is fixed downward and outward on the outer side end of the sliding plate (43), and the translation plate (44) is arranged parallel to the inclined baffle (42). When the two sliding plates (43) are in close contact, the translation plate (44) is in close contact with the adjacent inclined baffle (42), and a connecting plate (46) is hingedly provided at the lower end of the translation plate (44), and a guide plate (45) is vertically fixedly provided at the lower end of the connecting plate (46).

3. A farm wastewater treatment device according to claim 2, characterized in that: The self-draining single-cycle three-phase separator (4) comprises windows (47), wherein an array of windows (47) is provided on the surfaces of a translation plate (44) and an inclined baffle (42), wherein the uppermost windows (47) are away from the sliding plate (43) and the horizontal baffle (41), wherein the lower end surface of the windows (47) is arranged horizontally, and the upper end surface of the windows (47) is perpendicular to the translation plate (44) and the inclined baffle (42), wherein an opening and closing plate (48) is closely arranged inside the windows (47), wherein hollow columns (481) are fixedly arranged on both sides of the upper end of the opening and closing plate (48), and wherein the translation plate (44) and the inclined baffle (42) are provided with columnar grooves (481) at positions directly opposite to the hollow columns (481). 3), the hollow column (481) is rotatably arranged in the cylindrical groove (483), the arc surface of the upper end of the opening and closing plate (48) is always in close contact with the upper end surface of the window (47), and when the lower end surface of the opening and closing plate (48) is in close contact with the lower end surface of the window (47), the inner and outer side surfaces of the opening and closing plate (48) coincide with the inner and outer side surfaces of the translation plate (44) and the inner and outer side surfaces of the inclined baffle (42), and a torsion spring (482) is closely arranged in the hollow column (481), one end of the torsion spring (482) is inserted into the opening and closing plate (48), and the other end of the torsion spring (482) is inserted into the translation plate (44) and the inclined baffle (42) at the inner end of the cylindrical groove (483).

4. A farm wastewater treatment device according to claim 3, characterized in that: The self-draining single-circulation three-phase separator (4) comprises a rotating shaft (441), a shaft support (461), a recess (451) and a slide groove (421); the rotating shaft (441) is fixedly arranged at the lower end of the translation plate (44); the shaft support (461) is symmetrically fixedly arranged at two edges of the upper end of the connecting plate (46); the rotating shaft (441) is tightly attached to the shaft support (461) and is rotationally connected to the shaft support (461); the arc surface of the rotating shaft (441) is always tightly attached to the upper end surface of the connecting plate (46); the arc surface of the shaft support (461) is always tightly attached to the lower end surface of the translation plate (44); the recess (451) is symmetrically arranged at two inner edges of the guide plate (45); the recess (451) is adjacent to the connecting plate (46); the guide plate (45) is connected along the recess (451) A groove (452) is horizontally opened in the middle length direction of the slide groove (421), the slide groove (421) is symmetrically opened at the two inner edges of the lower end of the inclined baffle (42), a slider (49) is tightly slidably arranged in the slide groove (421), a slide column (491) is laterally fixed at one end of the slider (49), the slider (49) is tightly located in the recess (451), the slide column (491) is tightly slidably arranged in the groove (452), a tension spring (492) is arranged in the slide groove (421), and the two ends of the tension spring (492) are respectively fixedly connected to the inclined baffle (42) and the slider (49), and when the translation plate (44) is tightly attached to the adjacent inclined baffle (42), the inner side surface of the connecting plate (46) is tightly attached to the lower end surface of the inclined baffle (42), and the guide plate (45) is tightly attached to the inclined baffle (42).

5. A farm wastewater treatment device according to claim 4, characterized in that: The cam-type reciprocating drive mechanism (5) comprises a transmission shaft (51) and a driven column (55). The transmission shaft (51) is horizontally arranged above the cam-type reciprocating drive mechanism (5) on each layer. One end of the transmission shaft (51) is rotatably arranged in a side wall of the reaction box (1). The other end of the transmission shaft (51) penetrates the other side wall of the reaction box (1). A cylindrical cam (52) is coaxially fixedly arranged on the transmission shaft (51). The cylindrical cam (52) is located directly above the horizontal baffle (41). A spiral bevel groove (54) is formed on the surface of the cylindrical cam (52). The spiral bevel groove (54) is located at the center of the horizontal baffle (41). One side of the surface is symmetrically arranged on both sides of the cylindrical cam (52), and a horizontal groove (53) is opened between one end and the other end of the symmetrical spiral bevel groove (54). The connecting structure composed of the horizontal groove (53) and the spiral bevel groove (54) is symmetrically arranged on the other surface of the cylindrical cam (52) along the center plane of the horizontal baffle plate (41). The driven column (55) is vertically fixed on the middle part of the upper side of the sliding plate (43), and the upper end of the driven column (55) slides closely in the horizontal groove (53) and the spiral bevel groove (54). When the two sliding plates (43) are closely attached, the upper ends of the two driven columns (55) are respectively located in the horizontal grooves (53) close to the lower side.

6. A farm wastewater treatment device according to claim 5, characterized in that: The belt-type synchronous transmission mechanism (6) comprises a transmission pulley (61), a guide pulley (62) and a motor (64); the transmission pulley (61) is coaxially fixedly arranged at one end of a transmission shaft (51) outside a reaction box (1); the guide pulley (62) is rotatably arranged outside the reaction box (1); the guide pulley (62) is horizontally symmetrically arranged between the transmission pulleys (61); the sides of the transmission pulley (61) and the guide pulley (62) are cooperatively connected with a belt (63); the belt (63) is cross-wound between the transmission pulley (61) and the guide pulley (62); the motor (64) is fixedly arranged at one side of the reaction box (1); and the output end of the motor (64) is coaxially fixedly connected to one of the transmission pulleys (61).

7. A farm wastewater treatment device according to claim 6, characterized in that: An air collecting pipe (33) is fixedly connected to the upper side of the air collecting chamber (3), and air collecting ports (31) are arranged in an array on both sides of the air collecting chamber (3). The projection of the upper internal space formed by the horizontal baffle (41) and the inclined baffle (42) coincides with the air collecting port (31), and the air collecting port (31) is located above the uppermost window (47).

8. The farm wastewater treatment device according to claim 7, characterized in that: The sliding plate (43) is provided with limit plates (32) horizontally and tightly attached to the upper sides of both ends of the sliding plate (43) that are in contact with the reaction box (1) and the gas collecting chamber (3); the limit plates (32) are respectively fixed on the reaction box (1) and the gas collecting chamber (3).

Images