A kind of anti-reverse water-retention type multifunctional compound fertilizer production sewage purification equipment

Abstract

This invention relates to the field of wastewater purification technology and discloses a stress-resistant, water-retaining, multifunctional compound fertilizer production wastewater purification device. It includes a base, a sedimentation outer cylinder at the top of the base, and a sedimentation inner cylinder inside the outer cylinder. The inner cylinder is fixedly connected to the outer cylinder, and a partition is provided between them. An inlet pipe is located on one side of the outer cylinder at the bottom of the partition, and an outlet pipe is located on the other side of the outer cylinder at the top of the partition. This stress-resistant, water-retaining, multifunctional compound fertilizer production wastewater purification device achieves forced sedimentation of wastewater through a sedimentation component. A drive motor rotates a threaded rod, causing a filter plate to slide along the sealed limit of the inner cylinder. During downward movement, the filter holes are open, and the mechanical downward pressure forces the water, carrying impurities, to settle to the bottom of the cylinder, abandoning the traditional natural settling mode. During upward movement, the sealing component closes the filter holes, pushing clean water through the outlet into the clean water zone and out through the outlet pipe. This is achieved through a combination of mechanical reciprocating motion and physical filtration.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification technology, and in particular to a stress-resistant, water-retaining, multifunctional compound fertilizer production wastewater purification device. Background Technology

[0002] Stress-resistant and water-retaining multifunctional compound fertilizer is a new type of fertilizer that integrates nutrient supply, water retention, soil improvement, and enhanced crop resistance. It also features slow-release and controlled-release properties, locking in soil moisture, alleviating drought, flood, and salinity stress, improving fertilizer utilization, and promoting robust crop growth, making it suitable for green and efficient modern agricultural planting. However, the production process of this type of compound fertilizer generates a large amount of wastewater, which, if directly discharged, would cause environmental pollution. Therefore, wastewater treatment equipment is needed to purify the wastewater generated during the production process. Traditional wastewater treatment equipment has the following drawbacks: In practical applications, existing wastewater treatment equipment commonly employs flocculant addition to achieve sedimentation and purification of wastewater impurities. Wastewater contains a large number of tiny suspended particles, colloidal substances, and organic pollutants. These substances are extremely small in size and lightweight, making them almost impossible to settle under their own weight. They can only be separated by the adsorption and bridging effects of flocculants, forming large flocs that then slowly settle and separate. However, in actual production, wastewater quality and quantity fluctuate frequently, and the pollutant composition is complex and variable. A fixed flocculant addition method cannot accurately match real-time water quality conditions. Incomplete flocculation results in loose, fragmented, and unstable flocs, significantly slowing down the settling rate and requiring considerable time for sedimentation, making the overall treatment process time-consuming and lengthy. This prolonged sedimentation directly restricts the equipment's continuous operation capacity, hindering the increase in wastewater treatment throughput and failing to meet the production demands for rapid treatment of large volumes of wastewater. Meanwhile, in order to compensate for the insufficient sedimentation effect, the amount of flocculant added can only be continuously increased, which not only raises the economic costs of reagent procurement and daily operation and maintenance, but also causes excessive reagent residue to damage the original ecology of the water body and generate secondary pollution. In addition, additional subsequent purification treatment processes are required, further increasing equipment investment and operational burden. The overall efficiency, economy and environmental protection of sewage purification are all significantly insufficient. Summary of the Invention

[0003] Given that existing wastewater purification equipment generally uses the addition of flocculants to achieve wastewater sedimentation and purification, which requires a long sedimentation time and is difficult to meet the production needs of rapid treatment of large quantities of wastewater, a stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment is proposed.

[0004] This application provides a stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment, the purpose of which is to improve the sedimentation rate of wastewater and enhance the efficiency, economy and environmental friendliness of wastewater purification.

[0005] The technical solution of the present invention is as follows: a stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment, including a base, a sedimentation outer cylinder provided on the top of the base, a sedimentation inner cylinder provided inside the sedimentation outer cylinder, the sedimentation inner cylinder being fixedly connected to the sedimentation outer cylinder, a partition being provided between the sedimentation outer cylinder and the sedimentation inner cylinder, an inlet pipe being provided on one side of the sedimentation outer cylinder at the bottom of the partition, an outlet pipe being provided on the other side of the sedimentation outer cylinder at the top of the partition, an outlet being provided on the top of the sedimentation inner cylinder, and a forced sedimentation component provided inside the sedimentation inner cylinder; The forced sedimentation component includes a sedimentation assembly disposed inside the sedimentation inner cylinder, a sealing assembly disposed on the sedimentation assembly, and an opening and closing assembly disposed on the sealing assembly. The forced sedimentation component is used to force the sedimentation of wastewater and accelerate the sedimentation rate of wastewater; The sedimentation assembly includes a threaded rod disposed on the inner cylinder of the sedimentation chamber, a filter plate disposed on the outside of the threaded rod, the filter plate being slidably and sealingly connected to the inner side of the inner cylinder of the sedimentation chamber, and a number of filter holes being arranged in a ring array on the filter plate. A drive motor is disposed at the top of the outer cylinder of the sedimentation chamber, and the output shaft of the drive motor is fixedly connected to the threaded rod.

[0006] Furthermore, the sealing assembly includes a plurality of sealing boxes arranged in a ring array on the filter plate, a plurality of movable grooves arranged in a ring array on the filter plate, a movable rod arranged inside the movable groove, the movable rod being fixedly connected to the corresponding sealing box, and a sealing spring being arranged between the movable rod and the inner wall of the movable groove.

[0007] Furthermore, the opening and closing assembly includes several opening and closing rings symmetrically distributed on the sealing box, and several opening and closing rods symmetrically distributed inside the sealing box. Each opening and closing rod is equipped with an opening and closing sealing plate, which corresponds to the opening and closing rings and can seal the opening and closing rings. An opening and closing spring is provided between the opening and closing sealing plate and the sealing box, and the opening and closing spring is sleeved on the corresponding opening and closing rod.

[0008] Furthermore, the forced sedimentation component also includes a first protective component disposed on the sedimentation assembly, a sludge discharge component disposed inside the sedimentation inner cylinder, a second protective component disposed on the sedimentation assembly, a liquid inlet component disposed on the sedimentation inner cylinder, and a sludge receiving component disposed on the base. The first protective component includes a first soft sheath disposed on the outside of the threaded rod. One end of the first soft sheath is fixedly connected to the filter plate, and the other end of the first soft sheath is fixedly connected to the sedimentation inner cylinder. A connecting hose is disposed between the first soft sheath and the sealing box. A fixing pipe is disposed on the top of the first soft sheath, and the fixing pipe passes through the sedimentation inner cylinder and the sedimentation outer cylinder.

[0009] Furthermore, the sludge discharge assembly includes a central column disposed at the bottom of the inner side of the sedimentation inner cylinder, a number of wedge plates arranged in a circular array on the central column, a sleeve disposed on the filter plate, a protrusion disposed on the sleeve, a threaded groove disposed on the central column, the protrusion being slidably connected to the inner side of the threaded groove, and a number of sludge discharge outlets arranged in a circular array on the sedimentation inner cylinder, the wedge plates being sealed to the sludge discharge outlets.

[0010] Furthermore, the second protective component includes a second soft sheath disposed at the bottom of the threaded rod. One end of the second soft sheath is rotatably connected to the threaded rod, and the other end of the second soft sheath is fixedly connected to the filter plate. A protective hose is disposed on the second soft sheath, and the protective hose passes through the sleeve, the inner sedimentation cylinder, and the outer sedimentation cylinder.

[0011] Furthermore, the liquid inlet assembly includes a through pipe symmetrically distributed on the inner cylinder of the sedimentation tank, a fixed plate inside the through pipe, a plurality of through holes arranged in a ring array on the fixed plate, a sliding rod on the fixed plate, a blocking plate on the sliding rod, the blocking plate being in contact with the fixed plate, and a liquid inlet spring between the sliding rod and the fixed plate, the liquid inlet spring being sleeved on the sliding rod.

[0012] Furthermore, the mud receiving assembly includes a mud receiving port located at the top of the base, a mud receiving box located on the base, and the mud receiving box and the sedimentation inner cylinder are connected through the mud receiving port.

[0013] The beneficial effects of this invention are: 1. Forced sedimentation of wastewater is achieved through a sedimentation assembly. A drive motor rotates a threaded rod, causing the filter plate to slide along the sealed limit within the sedimentation cylinder. During downward movement, the filter holes are open, and the mechanical downward pressure forces the water, carrying impurities, to settle to the bottom of the cylinder, abandoning the traditional natural settling method. During upward movement, the sealing assembly closes the filter holes, pushing clean water through the outlet into the clean water zone and out through the outlet pipe. Through mechanical reciprocating motion combined with physical filtration, water turbulence is suppressed, eliminating the need for large amounts of flocculant, significantly shortening the sedimentation cycle, and substantially improving the efficiency of wastewater purification in compound fertilizer production.

[0014] 2. Automatic clogging of the filter holes is achieved through the installation of sealing and opening / closing components. When the filter plate moves upward and adheres to the filter, the opening / closing rod is pressed, causing the sealing plate to disengage from the opening / closing ring, connecting the sealing box with the filter holes. Combined with air supply from the first protective component, the airflow rushes into the filter holes to flush away accumulated impurities, achieving self-cleaning and anti-clogging. Simultaneously, the air bubbles dissolve into the water, flotating and entraining suspended impurities and breaking down colloidal particles, assisting in the flocculation reaction and also providing oxygenation and odor suppression. When the filter plate moves downward and separates, the opening / closing spring resets and seals, preventing sewage impurities from entering the sealing box and causing blockage, ensuring long-term stable operation of the equipment.

[0015] 3. Through the sludge discharge and receiving components, when the filter plate descends, the central column rotates via a linkage between the sleeve and protrusions, causing the wedge plate to disengage from the sludge discharge outlet and automatically opening the sludge discharge channel. Simultaneously, the rotating wedge plate sweeps the sludge at the bottom of the cylinder, facilitating rapid sludge discharge. When the filter plate ascends, the mechanism resets, and the wedge plate re-seals the sludge discharge outlet, achieving intermittent automatic sludge discharge. The discharged sludge falls into the sludge receiving box through the base's sludge receiving port, allowing for centralized removal and treatment without manual cleaning. This high degree of automation reduces maintenance workload and ensures long-term unobstructed flow in the wastewater sedimentation chamber. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the outer sedimentation cylinder of the present invention; Figure 3 This is a schematic cross-sectional view of the sedimentation inner cylinder of the present invention; Figure 4 This is a schematic diagram of the forced precipitation component structure of the present invention; Figure 5 This is a cross-sectional view of the precipitation component of the present invention; Figure 6 This is a schematic diagram of the sealing assembly structure of the present invention; Figure 7 This is a cross-sectional view of the sealing assembly of the present invention; Figure 8 This is a schematic diagram of the opening and closing component structure of the present invention; Figure 9 This is a schematic diagram of the sludge discharge component structure of the present invention; Figure 10 This is a top-section schematic diagram of the sedimentation inner cylinder structure of the present invention; Figure 11 This is a schematic diagram of the liquid inlet assembly structure of the present invention; Figure 12 This is an exploded view of the liquid inlet assembly of the present invention; Figure 13 This is a schematic diagram of the mud receiving assembly structure of the present invention.

[0017] In the picture: 1. Base; 11. Sedimentation outer cylinder; 12. Sedimentation inner cylinder; 13. Baffle; 14. Inlet pipe; 15. Outlet pipe; 16. Outlet; 2. Sedimentation assembly; 21. Threaded rod; 22. Filter plate; 23. Filter hole; 24. Drive motor; 3. Sealing assembly; 31. Sealing box; 32. Movable rod; 33. Sealing spring; 4. Opening and closing assembly; 41. Opening and closing ring; 42. Opening and closing rod; 43. Opening and closing sealing plate; 44. Opening and closing spring; 5. First protection assembly; 51 51. First soft sheath; 52. Connecting hose; 53. Fixing pipe; 6. Sludge discharge assembly; 61. Central column; 62. Wedge plate; 63. Sleeve; 64. Protrusion; 65. Sludge discharge outlet; 7. Second protective assembly; 71. Second soft sheath; 72. Protective hose; 8. Liquid inlet assembly; 81. Through pipe; 82. Fixing plate; 83. Connecting hole; 84. Sliding rod; 85. Baffle plate; 86. Liquid inlet spring; 9. Sludge receiving assembly; 91. Sludge receiving port; 92. Sludge receiving box. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Example 1, referring to Figures 1-8 This invention provides a first embodiment of a stress-resistant, water-retaining, multifunctional compound fertilizer production wastewater purification device, comprising a base 1, a sedimentation outer cylinder 11 fixedly connected to the top of the base 1, a sedimentation inner cylinder 12 fixedly connected inside the sedimentation outer cylinder 11, the sedimentation inner cylinder 12 being fixedly connected to the sedimentation outer cylinder 11, a partition 13 being fixedly and sealed between the sedimentation outer cylinder 11 and the sedimentation inner cylinder 12, an inlet pipe 14 fixedly connected to one side of the sedimentation outer cylinder 11 at the bottom of the partition 13, an outlet pipe 15 fixedly connected to the other side of the sedimentation outer cylinder 11 at the top of the partition 13, an outlet 16 being opened at the top of the sedimentation inner cylinder 12, and a forced sedimentation unit installed inside the sedimentation inner cylinder 12. The forced sedimentation component includes a sedimentation assembly 2 installed inside the sedimentation inner cylinder 12, a sealing assembly 3 installed on the sedimentation assembly 2, and an opening and closing assembly 4 installed on the sealing assembly 3. The forced sedimentation component is used to force sedimentation of sewage and accelerate the sedimentation rate of sewage. The sedimentation assembly 2 includes a threaded rod 21 rotatably connected to the sedimentation inner cylinder 12, a filter plate 22 threadedly connected to the outside of the threaded rod 21, the filter plate 22 being slidably and sealingly connected to the inside of the sedimentation inner cylinder 12, and a number of filter holes 23 distributed in a ring array on the filter plate 22. A drive motor 24 is fixedly connected to the top of the sedimentation outer cylinder 11, and the output shaft of the drive motor 24 is fixedly connected to the threaded rod 21.

[0020] Specifically, the partition 13 divides the sedimentation outer cylinder 11 and sedimentation inner cylinder 12 into a clear water zone at the top and a wastewater zone at the bottom. Wastewater enters the wastewater zone through the inlet pipe 14, passes through the inlet assembly 8, and enters the sedimentation inner cylinder 12. The drive motor 24 is started, driving the threaded rod 21 to rotate. The filter plate 22 slides and is sealed against the inner side of the sedimentation inner cylinder 12, allowing the filter plate 22 to slide on the threaded rod 21. During the sliding process, the filter plate 22 filters the wastewater under the action of the filter holes 23, forcing impurities in the wastewater to be pressed down and move towards the bottom of the sedimentation inner cylinder 12 for sedimentation. The filter plate 22 slides upward on the threaded rod 21, and the filter holes 23 are sealed, allowing the filtered clear water at the top of the sedimentation inner cylinder 12 to be pushed by the filter plate 22 and enter the clear water zone from the outlet 16, and then be discharged from the outlet pipe 15. This breaks the traditional natural sedimentation mode, suppressing water turbulence through the dual action of mechanical pressure and physical filtration, significantly shortening sedimentation time, and improving the efficiency of wastewater purification in compound fertilizer production. The entire structure is rationally zoned and uses mechanically assisted forced settling, eliminating the need for large amounts of flocculants.

[0021] Reference Figure 6 and Figure 7 The sealing assembly 3 includes several sealing boxes 31 that are slidably connected to the filter plate 22 in a ring array. Several movable grooves are provided on the filter plate 22 in a ring array. Movable rods 32 are slidably connected to the inner side of the movable grooves. The movable rods 32 are fixedly connected to the corresponding sealing boxes 31. A sealing spring 33 is fixedly connected between the movable rods 32 and the inner wall of the movable groove.

[0022] Specifically, when the filter plate 22 slides downward on the threaded rod 21, the sealing spring 33 causes the movable rod 32 to slide upward on the sealing box 31, causing the sealing box 31 to no longer seal the filter holes 23. This allows impurities in the wastewater inside the sedimentation inner cylinder 12 to move downward under the action of the filter holes 23, while the filtered water moves upward and separates into layers. When the filter plate 22 slides upward on the threaded rod 21, the sealing spring 33 causes the movable rod 32 to slide downward on the sealing box 31, causing the sealing box 31 to press tightly against the filter plate 22 and seal the filter holes 23. This forces the clear water at the top of the filter plate 22 to be squeezed towards the outlet 16, discharging the clear water.

[0023] Reference Figure 7 and Figure 8 The opening and closing assembly 4 includes several opening and closing rings 41 that are symmetrically distributed and fixedly connected to the sealing box 31. Several opening and closing rods 42 are also symmetrically distributed and slidably connected inside the sealing box 31. An opening and closing sealing plate 43 is fixedly connected to the opening and closing rod 42. The opening and closing sealing plate 43 corresponds to the opening and closing rings 41 one by one and can seal the opening and closing rings 41. An opening and closing spring 44 is fixedly connected between the opening and closing sealing plate 43 and the sealing box 31. The opening and closing spring 44 is sleeved on the corresponding opening and closing rod 42.

[0024] Specifically, when the sealed box 31 is tightly attached to the filter plate 22, the filter plate 22 presses the opening and closing rod 42, causing the opening and closing spring 44 to be stretched. The opening and closing sealing plate 43 separates from the opening and closing ring 41, allowing the filter hole 23 to communicate with the inside of the sealed box 31 through the opening and closing ring 41. Gas inside the sealed box 31 can enter the filter hole 23, facilitating the cleaning of impurities inside the filter hole 23. At the same time, the gas entering the wastewater can flotate and separate suspended impurities, break up colloidal particles, assist in flocculation, and also increase oxygen and suppress odor, aiding subsequent sedimentation and purification. When the sealed box 31 separates from the filter plate 22, the opening and closing spring 44 resets, causing the opening and closing sealing plate 43 to adhere to the opening and closing ring 41, sealing the opening and closing ring 41. This prevents the inside of the sealed box 31 from communicating with the inside of the filter hole 23, avoiding the filter water from entering the sealed box 31 and clogging it when the filter plate 22 moves.

[0025] Example 2, refer to Figures 9-13 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the forced sedimentation component further includes a first protective component 5 installed on the sedimentation assembly 2, a sludge discharge component 6 installed inside the sedimentation inner cylinder 12, a second protective component 7 installed on the sedimentation assembly 2, a liquid inlet component 8 installed on the sedimentation inner cylinder 12, and a sludge receiving component 9 installed on the base 1; the first protective component 5 includes a first soft sheath 51 sleeved on the outside of the threaded rod 21, one end of the first soft sheath 51 is fixedly connected to the filter plate 22, the other end of the first soft sheath 51 is fixedly connected to the sedimentation inner cylinder 12, a connecting hose 52 is fixedly connected between the first soft sheath 51 and the sealing box 31, and a fixing pipe 53 is fixedly connected to the top of the first soft sheath 51, the fixing pipe 53 penetrating the sedimentation inner cylinder 12 and the sedimentation outer cylinder 11.

[0026] Specifically, a one-way vent valve is fixedly connected to the connecting hose 52, and a one-way inlet valve is fixedly connected to the fixed pipe 53. When the filter plate 22 slides upward on the threaded rod 21, the filter plate 22 squeezes the first soft sheath 51. Under the action of the one-way vent valve, the gas inside the first soft sheath 51 enters the sealing box 31 from the connecting hose 52. At this time, the opening and closing component 4 is in the open state, and the gas can just enter the filter hole 23. When the filter plate 22 slides downward on the threaded rod 21, the first soft sheath 51 will expand. Under the action of the one-way inlet valve, the outside gas enters the first soft sheath 51 from the fixed pipe 53. The first soft sheath 51 can protect the threaded rod 21, preventing sewage from corroding the threaded rod 21 and causing the threaded rod 21 to deteriorate in transmission performance. Reference Figure 9 and Figure 10The sludge discharge assembly 6 includes a central column 61 rotatably connected to the bottom of the inner side of the sedimentation inner cylinder 12. Several wedge plates 62 are fixedly connected to the central column 61 in a ring array. A sleeve 63 is fixedly connected to the filter plate 22. A protrusion 64 is fixedly connected to the sleeve 63. A threaded groove is opened on the central column 61. The protrusion 64 is slidably connected to the inner side of the threaded groove. Several sludge discharge outlets 65 are opened in a ring array on the sedimentation inner cylinder 12. The wedge plates 62 are sealed to the sludge discharge outlets 65.

[0027] Specifically, initially, the wedge plate 62 is positioned at the top of the sludge discharge outlet 65, sealing it. As the filter plate 22 slides downwards, it moves the sleeve 63 downwards. When the protrusion 64 slides against the inner side of the threaded groove, the combined action of the protrusion 64 and the threaded groove causes the central column 61 to rotate, causing the wedge plate 62 to rotate away from the top of the sludge discharge outlet 65. At this time, the space between the filter plate 22 and the sedimentation inner cylinder 12 is filled with sludge. When the sludge discharge outlet 65 is exposed, the sludge at the top will be discharged downwards from the sludge discharge outlet 65. Simultaneously, the rotation of the wedge plate 62 can also sweep sludge into the sludge discharge outlet 65, assisting in the rapid discharge of sludge. As the filter plate 22 slides upwards, the protrusion 64 will leave the threaded groove, causing the central column 61 to reverse, driving the wedge plate 62 to rotate and reset, so that the wedge plate 62 once again covers the top of the sludge discharge outlet 65.

[0028] Reference Figure 4 and Figure 5 The second protective component 7 includes a second soft sleeve 71 sleeved at the bottom of the threaded rod 21. One end of the second soft sleeve 71 is rotatably connected to the threaded rod 21, and the other end of the second soft sleeve 71 is fixedly connected to the filter plate 22. A protective hose 72 is fixedly connected to the second soft sleeve 71. The protective hose 72 passes through the sleeve 63, the sedimentation inner cylinder 12, and the sedimentation outer cylinder 11.

[0029] Specifically, when the filter plate 22 moves, it will compress or stretch the second soft sheath 71, allowing gas inside the second soft sheath 71 to freely enter and exit under the action of the protective hose 72. The second soft sheath 71 can protect the threaded rod 21 from the corrosion of sewage. The rest of the structure is the same as that of Embodiment 1.

[0030] Example 3, referring to Figure 11 and Figure 12This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the liquid inlet assembly 8 includes a through pipe 81 that is symmetrically distributed and fixedly connected to the sedimentation inner cylinder 12. A fixed plate 82 is fixedly connected inside the through pipe 81. A plurality of through holes 83 are arranged in a ring array on the fixed plate 82. A sliding rod 84 is also slidably connected to the fixed plate 82. A blocking plate 85 is fixedly connected to the sliding rod 84. The blocking plate 85 is in contact with the fixed plate 82. A liquid inlet spring 86 is fixedly connected between the sliding rod 84 and the fixed plate 82. The liquid inlet spring 86 is sleeved on the sliding rod 84.

[0031] Specifically, when the filter plate 22 slides downward on the threaded rod 21, the sealing box 31 opens the filter hole 23, making the top and bottom of the sedimentation inner cylinder 12 connected. The air pressure remains constant. At this time, under the action of the inlet spring 86, the sliding rod 84 causes the baffle plate 85 to press tightly against the fixed plate 82, sealing the connecting hole 83 and preventing sewage from entering the sedimentation inner cylinder 12 through the pipe 81. When the filter plate 22 slides upward on the threaded rod 21, the sealing box 31 seals the filter hole 23, reducing the air pressure at the bottom of the sedimentation inner cylinder 12 and generating suction. This suction pulls on the baffle plate 85, causing the inlet spring 86 to deform. The sliding rod 84 then moves the baffle plate 85 away from the fixed plate 82, opening the connecting hole 83 and allowing sewage from the sewage area to enter the sedimentation inner cylinder 12 through the pipe 81.

[0032] Reference Figure 13 The mud receiving assembly 9 includes a mud receiving port 91 opened on the top of the base 1, and a mud receiving box 92 is slidably connected on the base 1. The mud receiving box 92 is connected to the sedimentation inner cylinder 12 through the mud receiving port 91.

[0033] Specifically, when the sludge in the sedimentation inner cylinder 12 falls from the sludge discharge outlet 65, it is drawn into the sludge collection box 92 by the sludge receiving port 91 for collection. The sludge is then removed from the base 1 for centralized sludge treatment. The remaining structure is the same as that in Example 2.

[0034] Based on embodiments 1-3, the working principle of the present invention is as follows: Wastewater enters the outer sedimentation cylinder 11 through the inlet pipe 14. The drive motor 24 is started, causing the threaded rod 21 to rotate, causing the filter plate 22 to slide upwards on the threaded rod 21. At this time, under the action of the sealing spring 33, the movable rod 32 causes the sealing box 31 to press tightly against the filter plate 22, sealing the filter hole 23. This creates a negative pressure at the bottom of the inner sedimentation cylinder 12, attracting the baffle plate 85, compressing the inlet spring 86. The sliding rod 84 moves the baffle plate 85 away from the fixed plate 82, opening the connecting hole 83. Wastewater in the outer sedimentation cylinder 11 enters the inner sedimentation cylinder 12 through the through pipe 81. When the inner sedimentation cylinder 12 is full of wastewater, the flow rate is controlled... As the filter plate 22 slides downwards, the water pressure pushes the sealing box 31 upwards, opening the filter hole 23. The filter hole 23 filters the wastewater, keeping impurities at the bottom of the filter plate 22 and continuously pressing them down. The filtered water remains at the top of the filter plate 22. When the filter plate 22 moves to the bottom of the sedimentation inner cylinder 12, the sleeve 63 moves to the top of the central column 61, causing the protrusion 64 to insert into the threaded groove, which in turn rotates the central column 61. This causes the wedge plate 62 to rotate, exposing the sludge discharge outlet 65, allowing the sludge at the bottom of the sedimentation inner cylinder 12 to be discharged from the sludge discharge outlet 65. The top of the central column 61 is designed with a conical structure to prevent sludge from being pushed onto the top of the central column 61. Afterwards, the filter plate 22 moves upwards again, allowing the sewage to re-enter the sedimentation inner cylinder 12. The clear water at the top of the sedimentation inner cylinder 12 will be squeezed out and discharged from the outlet 16. When the filter plate 22 moves upwards, the sealing box 31 will be pressed tightly against the top of the filter plate 22, squeezing the opening and closing rod 42, causing the opening and closing sealing plate 43 to separate from the opening and closing ring 41, so that the filter hole 23 is connected to the inside of the sealing box 31 through the opening and closing ring 41. The first soft sheath 51 is squeezed, causing the internal gas to be discharged from the connecting hose 52 and enter the sealing box 31. Afterwards, air is blown into the filter hole 23 to facilitate cleaning of the inside of the filter hole 23 and prevent impurities from clogging the filter hole 23.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification device, comprising a base (1), a sedimentation outer cylinder (11) disposed on the top of the base (1), a sedimentation inner cylinder (12) disposed inside the sedimentation outer cylinder (11), the sedimentation inner cylinder (12) being fixedly connected to the sedimentation outer cylinder (11), a partition (13) being disposed between the sedimentation outer cylinder (11) and the sedimentation inner cylinder (12), an inlet pipe (14) being disposed on one side of the sedimentation outer cylinder (11) at the bottom of the partition (13), an outlet pipe (15) being disposed on the other side of the sedimentation outer cylinder (11) at the top of the partition (13), and an outlet (16) being disposed on the top of the sedimentation inner cylinder (12), characterized in that: It also includes a forced sedimentation component installed inside the sedimentation inner cylinder (12); The forced sedimentation component includes a sedimentation assembly (2) disposed in the sedimentation inner cylinder (12), a sealing assembly (3) disposed on the sedimentation assembly (2), and an opening and closing assembly (4) disposed on the sealing assembly (3). The forced sedimentation component is used to force the sedimentation of wastewater and accelerate the sedimentation rate of wastewater; The sedimentation assembly (2) includes a threaded rod (21) disposed on the inner sedimentation cylinder (12), a filter plate (22) disposed on the outside of the threaded rod (21), the filter plate (22) being sealed and slidably connected to the inner side of the inner sedimentation cylinder (12), and a number of filter holes (23) being arranged in a ring array on the filter plate (22). A drive motor (24) is disposed on the top of the outer sedimentation cylinder (11), and the output shaft of the drive motor (24) is fixedly connected to the threaded rod (21).

2. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 1, characterized in that: The sealing assembly (3) includes a plurality of sealing boxes (31) arranged in a ring array on the filter plate (22). A plurality of movable grooves are arranged in a ring array on the filter plate (22). Movable rods (32) are provided inside the movable grooves. The movable rods (32) are fixedly connected to the corresponding sealing boxes (31). A sealing spring (33) is provided between the movable rods (32) and the inner wall of the movable groove.

3. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 2, characterized in that: The opening and closing assembly (4) includes several opening and closing rings (41) symmetrically distributed on the sealing box (31). Several opening and closing rods (42) are also symmetrically distributed inside the sealing box (31). An opening and closing sealing plate (43) is provided on the opening and closing rod (42). The opening and closing sealing plate (43) corresponds to the opening and closing ring (41) one by one and can seal the opening and closing ring (41). An opening and closing spring (44) is provided between the opening and closing sealing plate (43) and the sealing box (31). The opening and closing spring (44) is sleeved on the corresponding opening and closing rod (42).

4. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 2, characterized in that: The forced sedimentation component also includes a first protective component (5) disposed on the sedimentation assembly (2), a sludge discharge component (6) disposed inside the sedimentation inner cylinder (12), a second protective component (7) disposed on the sedimentation assembly (2), a liquid inlet component (8) disposed on the sedimentation inner cylinder (12), and a sludge receiving component (9) disposed on the base (1). The first protective component (5) includes a first soft sleeve (51) disposed on the outside of the threaded rod (21). One end of the first soft sleeve (51) is fixedly connected to the filter plate (22), and the other end of the first soft sleeve (51) is fixedly connected to the sedimentation inner cylinder (12). A connecting hose (52) is disposed between the first soft sleeve (51) and the sealing box (31). A fixing tube (53) is disposed on the top of the first soft sleeve (51). The fixing tube (53) passes through the sedimentation inner cylinder (12) and the sedimentation outer cylinder (11).

5. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 4, characterized in that: The sludge discharge assembly (6) includes a central column (61) located at the bottom of the inner side of the sedimentation inner cylinder (12), a number of wedge plates (62) arranged in a ring array on the central column (61), a sleeve (63) arranged on the filter plate (22), a protrusion (64) arranged on the sleeve (63), a threaded groove arranged on the central column (61), the protrusion (64) slidingly connected to the inner side of the threaded groove, a number of sludge discharge outlets (65) arranged in a ring array on the sedimentation inner cylinder (12), and the wedge plates (62) sealingly connected to the sludge discharge outlets (65).

6. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 5, characterized in that: The second protective component (7) includes a second soft sleeve (71) disposed at the bottom of the threaded rod (21). One end of the second soft sleeve (71) is rotatably connected to the threaded rod (21), and the other end of the second soft sleeve (71) is fixedly connected to the filter plate (22). A protective hose (72) is disposed on the second soft sleeve (71), and the protective hose (72) passes through the sleeve (63), the sedimentation inner cylinder (12), and the sedimentation outer cylinder (11).

7. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 4, characterized in that: The liquid inlet assembly (8) includes a through pipe (81) symmetrically distributed on the sedimentation inner cylinder (12), a fixed plate (82) is provided inside the through pipe (81), a number of connecting holes (83) are arranged in a ring array on the fixed plate (82), a sliding rod (84) is also provided on the fixed plate (82), a baffle plate (85) is provided on the sliding rod (84), the baffle plate (85) is in contact with the fixed plate (82), and a liquid inlet spring (86) is provided between the sliding rod (84) and the fixed plate (82), the liquid inlet spring (86) is sleeved on the sliding rod (84).

8. The stress-resistant and water-retaining multifunctional compound fertilizer production wastewater purification equipment according to claim 4, characterized in that: The mud receiving assembly (9) includes a mud receiving port (91) set on the top of the base (1), and a mud receiving box (92) is provided on the base (1). The mud receiving box (92) is connected to the sedimentation inner cylinder (12) through the mud receiving port (91).

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