A fully automatic thick slurry discharge system and production method for a fertilizer production clear liquid sedimentation tank

Abstract

The present invention relates to the technical field of sedimentation tanks, and discloses a fully automatic thick slurry discharge system and production method for a fertilizer production clear liquid sedimentation tank, wherein the fully automatic thick slurry discharge system for a fertilizer production clear liquid sedimentation tank comprises a sedimentation tank, a support frame arranged on the outside of the sedimentation tank, a sedimentation tube arranged at the bottom of the sedimentation tank, a slurry discharge pipe arranged at the bottom of the sedimentation pipe, a slurry discharge control component arranged in the sedimentation pipe, and a power device arranged below the slurry discharge pipe. The fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank, by setting a slurry discharge control component, lifts the top plate group to allow the thick slurry to flow into the permeation separation cylinder, and then the telescopic member drives the top plate group downward, and the water in the thick slurry penetrates the permeation separation cylinder and flows into the reflux channel, and then the remaining solid matter is discharged through the upper discharge docking hole and the lower discharge docking hole. In this way, the clear liquid in the fertilizer can be collected to the greatest extent, the humidity of the thick slurry can be reduced, and the processing efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sedimentation tanks, and in particular to a fully automatic thick slurry discharge system for a fertilizer production clear liquid sedimentation tank and a production method. Background Art

[0002] During the fermentation process of fertilizer production, a large amount of suspended liquid is generated, in which a large number of suspended matter or solid particles are distributed. The clear liquid sedimentation tank is a key equipment for achieving solid-liquid separation. It is mainly used to separate the suspended solid particles in the clear liquid after reaction or filtration through gravity sedimentation to obtain high-purity clear liquid (such as mother liquor containing nitrogen, phosphorus, and potassium) for subsequent concentration, crystallization and other processes, and at the same time discharge thick slurry (slurry containing solid particles).

[0003] Patent publication number CN219630825U discloses a liquid fertilizer sedimentation tank, which relates to the field of fertilizer production technology. The tank body comprises a cover body at the upper end thereof, a suction pipe extending through the middle of the upper wall of the cover body, a linear actuator provided above the middle of the upper surface of the cover body, a connecting joint provided at the power output end of the linear actuator, the upper end of the suction pipe communicating with the input end of the connecting joint, a discharge pipe provided at the output end of the connecting joint, a filter end provided at the lower end of the suction pipe and inside the tank body, an indicator rod provided on one side of the filter end, a window provided at a position corresponding to the indicator rod on the side wall of the tank body, an output pipe extending through the middle of the lower wall of the tank body, and a feed port provided on the same side of the side wall of the tank body and the discharge pipe. The linear actuator drives the suction pipe to control the stratification line of the supernatant and the non-particulate matter to ensure the quality of the fertilizer produced.

[0004] The existing technology has the following defects:

[0005] The sedimentation tank uses gravity to achieve solid-liquid separation. Compared with other separation processes, this method requires less energy consumption and has lower processing costs, but the solid-liquid separation effect is relatively poor. The thick slurry precipitated below has a higher water content, which will result in a reduction in the amount of clear liquid obtained, and the thick slurry may need to be processed again due to its high humidity, affecting processing efficiency.

[0006] Two sets of sensors are installed in the sedimentation tank, one set to detect the amount of clear liquid above, and the other set to detect the amount of thick slurry below. The feedback from the sensors is used to control the extraction or discharge of slurry. However, in actual work, solid matter in the suspension may adhere to the vicinity of the sensor, or even solidify on the surface of the sensor after drying, blocking it for a long time. This may cause the system to misjudge and a large amount of clear liquid to be discharged from the slurry discharge port. Summary of the Invention

[0007] In view of the problem of incomplete fertilizer separation in the sedimentation tank in the prior art, a fully automatic thick slurry discharge system and production method for a fertilizer production clear liquid sedimentation tank are proposed.

[0008] The present application provides a fully automatic thick slurry discharge system and production method for a fertilizer production clear liquid sedimentation tank, the purpose of which is to repeatedly separate the clear liquid and thick slurry in the fertilizer.

[0009] The technical solution of the present invention is: a fully automatic thick slurry discharge system for a fertilizer production clear liquid sedimentation tank, comprising a sedimentation barrel, a support frame arranged on the outside of the sedimentation barrel, a sedimentation pipe arranged at the bottom of the sedimentation barrel, a slurry discharge pipe arranged at the bottom of the sedimentation pipe, and also comprising a slurry discharge control assembly arranged in the sedimentation pipe, a power device arranged below the slurry discharge pipe, a telescopic member arranged on the top of the power device, a reflux channel arranged on the outside of the sedimentation barrel, a water outlet arranged between the reflux channel and the sedimentation barrel, and a water inlet arranged between the reflux channel and the sedimentation pipe. The slurry discharge control assembly specifically comprises an osmotic separation cylinder arranged in the sedimentation pipe, a sealing plate arranged at the bottom of the osmotic separation cylinder, a lower puzzle plate arranged below the sealing plate, an upper discharge docking hole opened through the top of the sealing plate, a lower discharge docking hole opened through the top of the lower puzzle plate, and a top plate group arranged at the opening above the osmotic separation cylinder.

[0010] The water inlet is distributed around the outside of the osmotic separation cylinder, the lower puzzle plate is rotatably connected to the opening above the slurry discharge pipe, the lower puzzle plate is attached to the bottom of the sealing plate, the upper discharge docking hole and the lower discharge docking hole are staggered, and the telescopic part passes through the slurry discharge pipe, the lower puzzle plate and the sealing plate and is connected to the top plate group.

[0011] Furthermore, the bottom of the sedimentation barrel is configured to be conical, and the conical bottom is connected to the top of the sedimentation tube.

[0012] Furthermore, the height of the water inlet is the same as that of the osmotic separation cylinder, and a one-way osmotic membrane is installed in the water inlet.

[0013] Furthermore, the top plate assembly specifically includes a lifting plate and a movable plate arranged inside the permeate separation cylinder, an upper leakage hole penetrating through the top of the lifting plate, a lower leakage hole penetrating through the top of the movable plate, and a lifting platform arranged outside the telescopic member;

[0014] The lifting plate is attached to the bottom of the movable plate, the upper leakage hole and the lower leakage hole are staggered, the telescopic part passes through the lifting plate and is connected with the movable plate, and the lifting platform is located below the lifting plate.

[0015] Furthermore, a cleaning rod is fixedly connected to the bottom of the lifting plate, and the distribution position of the cleaning rod corresponds to the upper drainage docking hole.

[0016] Furthermore, a sealing ring is provided on the outer side of the movable plate, and a scraper is fixedly connected to the outer side of the lifting plate.

[0017] Furthermore, the telescopic member specifically includes a lower connecting rod and an upper connecting rod arranged between the power equipment and the top plate assembly, a sliding groove arranged at the top of the lower connecting rod, a sliding rod arranged at the bottom of the upper connecting rod, and an elastic member arranged between the sliding rod and the inner wall of the sliding groove;

[0018] The upper connecting rod is located on the top of the lower connecting rod, and the sliding rod is slidably inserted into the sliding groove.

[0019] Furthermore, the elastic member specifically includes a fixing platform and a connecting plate arranged inside the sliding groove, a connecting spring arranged between the fixing platform and the connecting plate, and a fixing bolt arranged between the lower connecting rod and the fixing platform;

[0020] The connecting plate is connected to the sliding rod, and the fixing bolt passes through the outer side of the lower connecting rod into the fixing platform.

[0021] The present invention also provides a method for fully automatically discharging thick slurry from a fertilizer production clear liquid sedimentation tank, comprising the following steps:

[0022] Equipment configuration: A pressure sensor is installed at the bottom of the sedimentation barrel, and a liquid level sensor is installed in the middle and upper part.

[0023] Set basic parameters: Set the pressure threshold and liquid level threshold based on experience as the conditions for starting the discharge of thick slurry.

[0024] Automatic slurry discharge process: When the pressure sensor detects that the pressure at the bottom of the barrel reaches the set threshold, or the liquid level sensor detects that the liquid level is lower than the set value, the system automatically turns on, starts the power equipment, and discharges the thick slurry; during the slurry discharge process, the slurry discharge frequency is automatically adjusted according to the pressure feedback to maintain stable slurry discharge.

[0025] Cleaning after slurry discharge: After the slurry discharge is completed, start the pipeline flushing program and spray high-pressure water into the pipeline for 3 minutes to prevent the pipeline from being blocked.

[0026] Beneficial effects of the present invention:

[0027] 1. By setting up a slurry discharge control component, the top plate group is lifted to allow the thick slurry to flow into the permeation separation cylinder, and then the telescopic part drives the top plate group to press down, and the water in the thick slurry penetrates the permeation separation cylinder and flows into the reflux channel. Then the remaining solid matter is discharged through the upper discharge docking hole and the lower discharge docking hole. In this way, the clear liquid in the fertilizer can be collected to the greatest extent, the humidity of the thick slurry can be reduced, which is conducive to improving processing efficiency. At the same time, when the top plate group is back pressured, the weight of the thick slurry and clear liquid in the sedimentation barrel will act on the top of the top plate group, so that the force applied by the telescopic part to the top plate group can be less, and better results can be achieved using low-power equipment. When the sensor is interfered with, the slurry discharge work will continue, resulting in the discharge of clear liquid. This equipment can recover the clear liquid entering the permeation separation cylinder to avoid leakage of clear liquid.

[0028] 2. By setting up the top plate group, when the telescopic part is lifted upward, the movable plate moves upward first, the movable plate and the lifting plate are separated, and the thick slurry will flow through the lower leakage hole and the upper leakage hole. This can reduce the resistance when the top plate group moves upward and reduce the power consumption required for the equipment to work. When the top plate group is pressed down, the movable plate and the lifting plate are merged, and the lower leakage hole and the upper leakage hole are closed to ensure that the pressure does not leak.

[0029] 3. By setting the telescopic parts, when the pressure of the thick slurry in the permeate separation cylinder reaches a certain level, the upper connecting rod will no longer move, and only the lower connecting rod will move to open the upper discharge docking hole and the lower discharge docking hole, and then the thick slurry will be discharged. Similarly, when resetting, the upper discharge docking hole will be closed first, and then new thick slurry will flow into the permeate separation cylinder. In this way, the time of entry and discharge of the thick slurry can be accurately controlled, and a certain buffer time is provided to avoid conflicts between steps and discharge the unsqueezed thick slurry. At the same time, elastic parts that are easy to disassemble and assemble are used, so different elastic parts can be selected according to different pressure requirements in the sedimentation barrel, making the equipment more adaptable and having a wider range of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a perspective view of the fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank of the present invention;

[0031] Figure 2 This is a schematic diagram of the interior of the sedimentation barrel of the present invention;

[0032] Figure 3 This is a schematic diagram of the disassembly of the slurry discharge control assembly of the present invention;

[0033] Figure 4 This is a schematic diagram of the slurry discharge control assembly of the present invention;

[0034] Figure 5 This is a schematic diagram of the disassembly of the slurry discharge control assembly of the present invention;

[0035] Figure 6 For the present invention Figure 5 Schematic diagram of the second perspective;

[0036] Figure 7 This is a disassembled diagram of the movable panel and the lower puzzle panel of the present invention;

[0037] Figure 8 For the present invention Figure 7 Schematic diagram of the second perspective;

[0038] Figure 9 This is a disassembled diagram of the telescopic member of the present invention;

[0039] Figure 10 It is a front view of the present invention;

[0040] Figure 11 It is a cross-sectional view of the present invention;

[0041] Figure 12 For the present invention Figure 11 Enlarged view of point A in the middle;

[0042] Figure 13 For the present invention Figure 11 Enlarged view of point B in the middle.

[0043] In the picture:

[0044] 1. Sedimentation barrel; 11. Return channel; 12. Water outlet; 13. Water inlet; 2. Support frame; 3. Sedimentation tube; 4. Slurry discharge pipe; 5. Slurry discharge control assembly; 51. Permeate separation cylinder; 52. Sealing plate; 53. Lower panel; 54. Upper discharge docking hole; 55. Lower discharge docking hole; 56. Top plate group; 561. Lifting plate; 562. Movable plate; 563. Upper leakage hole; 564. Lower leakage hole; 565. Lifting platform; 566. Cleaning rod; 6. Power equipment; 7. Telescopic part; 71. Lower connecting rod; 72. Upper connecting rod; 73. Sliding groove; 74. Sliding rod; 75. Fixed platform; 76. Connecting plate; 77. Connecting spring; 78. Fixing bolt. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] Example 1, with reference to Figures 1-13 , which is the first embodiment of the present invention, provides a fully automatic thick slurry discharge system for a fertilizer production clear liquid sedimentation tank, comprising a sedimentation tank 1, a support frame 2 arranged outside the sedimentation tank 1, a sedimentation pipe 3 arranged at the bottom of the sedimentation tank 1, a slurry discharge pipe 4 arranged at the bottom of the sedimentation pipe 3, a slurry discharge control component 5 arranged in the sedimentation pipe 3, a power device 6 arranged below the slurry discharge pipe 4, a telescopic member 7 arranged on the top of the power device 6, a reflux channel 11 arranged outside the sedimentation tank 1, and a reflux channel 11 and a reflux channel 11 arranged at the bottom of the sedimentation tank 1. The water outlet 12 between the sedimentation barrels 1, the water inlet 13 is arranged between the reflux channel 11 and the sedimentation tube 3, and the slurry discharge control component 5 specifically includes a permeate separation cylinder 51 arranged in the sedimentation tube 3, a sealing plate 52 arranged at the bottom of the permeate separation cylinder 51, a lower puzzle plate 53 arranged below the sealing plate 52, an upper discharge docking hole 54 opened at the top of the sealing plate 52, a lower discharge docking hole 55 opened at the top of the lower puzzle plate 53, and a top plate group 56 arranged at the opening above the permeate separation cylinder 51.

[0047] Specifically, a raw material adding pipe is provided on the top of the sedimentation barrel 1 for adding mixed fertilizer into the sedimentation barrel 1. The mixed fertilizer will complete sedimentation in the sedimentation barrel 1 to realize the separation of clear liquid and thick slurry. Two groups of sensors are provided in the sedimentation barrel 1, one group is a pressure sensor for monitoring the accumulation state of thick slurry at the bottom of the barrel, and the other group is a liquid level sensor for monitoring the clear liquid level. A clear liquid discharge pipe is provided on the outside of the sedimentation barrel 1 for discharging the clear liquid in the sedimentation barrel 1. The bottom of the sedimentation barrel 1 is set to be conical, and the bottom of the cone is connected to the top of the sedimentation pipe 3, so that the thick slurry precipitated in the sedimentation barrel 1 can be completely gathered into the sedimentation pipe 3. The support frame 2 is welded to the outside of the sedimentation barrel 1, and the slurry discharge pipe 4 is fixed to the sedimentation pipe 3 by bolts. A group of sensors is provided on the outside of the lower opening of the slurry discharge pipe 4 for detecting the humidity of the discharge, and a spiral groove is provided on the outside of the telescopic part 7.

[0048] The reflux channel 11 is wrapped around the outside of the sedimentation barrel 1, the water outlet 12 is at the same height as the clear liquid layer in the sedimentation barrel 1, and the water inlet 13 is distributed around the outside of the osmotic separation cylinder 51. The height of the water inlet 13 is the same as that of the osmotic separation cylinder 51, and a one-way permeation membrane is installed in the water inlet 13; the osmotic separation cylinder 51 is made of an alloy skeleton and a polymer permeable membrane. The alloy skeleton can enhance the rigidity of the osmotic separation cylinder 51 to avoid deformation, and the polymer permeable membrane can allow water in the thick slurry to pass through, while solid matter in the thick slurry cannot penetrate. The permeate separation cylinder 51 and the lower puzzle plate 53 are rotatably connected to the opening above the slurry discharge pipe 4, and a limit baffle is set between the two to control the rotation angle of the lower puzzle plate 53. The lower puzzle plate 53 is fitted under the sealing plate 52. The upper discharge docking hole 54 and the lower discharge docking hole 55 are staggered. The telescopic part 7 passes through the slurry discharge pipe 4, the lower puzzle plate 53 and the sealing plate 52 and is connected to the top plate group 56. The lower puzzle plate 53 is annular and is sleeved on the outside of the lower connecting rod 71. A spring rod is installed on the inner ring side of the lower puzzle plate 53, and the spring rod extends into the spiral groove.

[0049] By setting up the slurry discharge control component 5, the top plate group 56 is lifted to allow the thick slurry to flow into the permeate separation cylinder 51, and then the telescopic member 7 drives the top plate group 56 to press down, and the water in the thick slurry penetrates the permeate separation cylinder 51 and flows into the reflux channel 11, and then the remaining solid matter is discharged through the upper discharge docking hole 54 and the lower discharge docking hole 55. In this way, the clear liquid in the fertilizer can be collected to the greatest extent, the humidity of the thick slurry can be reduced, which is beneficial to improving the processing efficiency. At the same time, when the top plate group 56 is back-pressed, the weight of the thick slurry and clear liquid in the sedimentation barrel 1 will act on the top of the top plate group 56, so that the force applied by the telescopic member 7 to the top plate group 56 can be less, and better results can be achieved using low-power equipment. When the sensor is interfered with, the slurry discharge work will continue, resulting in the discharge of the clear liquid. This equipment can recover the clear liquid entering the permeate separation cylinder 51 to avoid leakage of the clear liquid.

[0050] The top plate group 56 specifically includes a lifting plate 561 and a movable plate 562 arranged on the inner side of the permeation separation cylinder 51, an upper leakage hole 563 opened through the top of the lifting plate 561, a lower leakage hole 564 opened through the top of the movable plate 562, and a lifting platform 565 arranged on the outside of the telescopic part 7.

[0051] Specifically, the lifting plate 561 is attached to the bottom of the movable plate 562, the upper leakage hole 563 and the lower leakage hole 564 are staggered, the telescopic part 7 passes through the lifting plate 561 and is fixed to the movable plate 562 by bolts, the lifting platform 565 is located below the lifting plate 561, the movable plate 562 and the lifting plate 561 are made of steel, and the thickness of the movable plate 562 is greater than that of the lifting plate 561, the lifting platform 565 can lift the lifting plate 561, and a sealing ring is provided on the outside of the movable plate 562 to ensure sealing. A scraper is fixedly connected to the outside of the lifting plate 561 to clean the inner wall of the permeate separation cylinder 51 to prevent the thick slurry from adhering to the inner wall of the permeate separation cylinder 51 under high pressure.

[0052] By setting up the top plate group 56, when the telescopic member 7 is lifted upward, the movable plate 562 moves upward first, and the movable plate 562 and the lifting plate 561 are separated, and the thick slurry will flow through the lower leakage hole 564 and the upper leakage hole 563. This can reduce the resistance when the top plate group 56 moves upward and reduce the power consumption required for the equipment to work. When the top plate group 56 is pressed downward, the movable plate 562 and the lifting plate 561 are merged, and the lower leakage hole 564 and the upper leakage hole 563 are closed to ensure that pressure does not leak.

[0053] Specifically, a cleaning rod 566 is fixedly connected to the bottom of the lifting plate 561. The distribution position of the cleaning rod 566 corresponds to the upper drainage docking hole 54. When the top plate group 56 is pressed down, the cleaning rod 566 will penetrate the upper drainage docking hole 54 and the lower drainage docking hole 55, thereby achieving a clearing effect and avoiding blockage.

[0054] The telescopic member 7 specifically includes a lower connecting rod 71 and an upper connecting rod 72 arranged between the power equipment 6 and the top plate group 56, a sliding groove 73 arranged at the top of the lower connecting rod 71, a sliding rod 74 arranged at the bottom of the upper connecting rod 72, and an elastic member arranged between the sliding rod 74 and the inner wall of the sliding groove 73; the elastic member specifically includes a fixed platform 75 and a connecting plate 76 arranged inside the sliding groove 73, a connecting spring 77 arranged between the fixed platform 75 and the connecting plate 76, and a fixing bolt 78 arranged between the lower connecting rod 71 and the fixed platform 75.

[0055] Specifically, the diameter of the lower connecting rod 71 is the same as that of the upper connecting rod 72, and the two are spliced ​​together. The upper connecting rod 72 is located at the top of the lower connecting rod 71, the sliding rod 74 is slidably inserted into the sliding groove 73, and the lifting platform 565 is located on the outside of the upper connecting rod 72; the connecting plate 76 is connected to the sliding rod 74 by bolts, and the fixing bolt 78 passes through the outside of the lower connecting rod 71 into the fixing platform 75, fixing the fixing platform 75 in the connecting spring 77.

[0056] By setting the telescopic part 7, after the pressure of the thick slurry in the permeate separation cylinder 51 reaches a certain level, the upper connecting rod 72 no longer moves, and only the lower connecting rod 71 moves to open the upper discharge docking hole 54 and the lower discharge docking hole 55, and then the thick slurry is discharged. When resetting, the lower connecting rod 71 moves first, and the upper discharge docking hole 54 is closed first, and then new thick slurry will flow into the permeate separation cylinder 51. In this way, the time for the thick slurry to enter and discharge can be accurately controlled, and a certain buffer time is provided to avoid conflicts between steps and discharge the unsqueezed thick slurry. At the same time, elastic parts that are easy to disassemble and assemble are used, so different elastic parts can be selected according to different pressure requirements in the sedimentation barrel 1, making the equipment more adaptable and having a wider range of use.

[0057] The working principle of the fully automatic thick slurry discharge system of the fertilizer production clear liquid sedimentation tank of the present invention is as follows: the fertilizer mixture is introduced into the sedimentation tank 1 through the raw material addition pipe, the solid matter in the fertilizer mixture sinks under the action of gravity, and forms a thick slurry at the bottom of the sedimentation tank 1, while the water in the fertilizer mixture floats up to form a clear liquid above the sedimentation tank 1, and then the clear liquid is pumped out of the sedimentation tank 1 through the clear liquid discharge pipe according to the feedback of the liquid level sensor.

[0058] The thick slurry in the sedimentation barrel 1 accumulates above the slurry discharge control component 5. According to the feedback from the pressure sensor, the power equipment 6 starts to work. The power equipment 6 controls the lower connecting rod 71 and the upper connecting rod 72 to move upward together. The upper connecting rod 72 pushes the movable plate 562 to move. The movable plate 562 first moves upward toward the thick slurry, and the thick slurry flows from the outside of the movable plate 562 and the lower leakage hole 564 to between the movable plate 562 and the lifting plate 561. When the lifting platform 565 contacts the lifting plate 561, the upper connecting rod 72 starts to push the lifting plate 561 to move synchronously. In this way, the thick slurry flows from the outside of the lifting plate 561 and the upper leakage hole 563 to the bottom of the lifting plate 561, and finally enters the permeate separation cylinder 51. At this time, the lower discharge docking hole 55 and the upper discharge docking hole 54 are staggered. When the permeate separation cylinder 51 is filled with thick slurry, the power equipment 6 controls the lower connecting rod 71 to move downward, and the lower connecting rod 71 pulls the upper connecting rod 72 through the elastic member. When the lifting plate 561 is moved to the opening above the permeate separation cylinder 51, the internal space of the permeate separation cylinder 51 is closed, and the lower connecting rod 71 and the upper connecting rod 72 continue to pull the lifting plate 561 and the movable plate 562 to pressurize the thick slurry in the permeate separation cylinder 51. At the same time, the thick slurry and clear liquid above the lifting plate 561 and the movable plate 562 will also use their own gravity to pressurize the thick slurry in the permeate separation cylinder 51. The water in the thick slurry in the permeate separation cylinder 51 penetrates through the permeate separation cylinder 51, flows into the reflux channel 11 from the water inlet 13, and finally is discharged from the water outlet 12. The clear liquid layer in the sedimentation tank 1

[0059] When the moisture content in the thick slurry reaches the specification standard, the pressure in the infiltration separation cylinder 51 also exceeds the bearing limit of the elastic member, and the elastic member begins to be stretched. During this process, the upper connecting rod 72 no longer moves, while the lower connecting rod 71 continues to move. When the spiral groove on the outer side of the lower connecting rod 71 moves to the lower puzzle plate 53, the spring rod on the inner side of the lower puzzle plate 53 enters the spiral groove. In this way, the lower connecting rod 71 will control the rotation of the lower puzzle plate 53 during its movement. When the lower puzzle plate 53 rotates, the lower discharge docking hole 55 and the upper discharge docking hole 54 will dock, and the remaining thick slurry in the infiltration separation cylinder 51 will be discharged into the slurry discharge pipe 4 through the lower discharge docking hole 55 and the upper discharge docking hole 54. During this process, the elastic member resets and pulls the upper connecting rod 72 downward, and finally the thick slurry is discharged through the slurry discharge pipe 4.

[0060] After complete discharge, the power device 6 controls the lower connecting rod 71 to move upward, and the lower connecting rod 71 moves to control the lower puzzle plate 53 to reset. Then the elastic member is completely contracted, and the lower connecting rod 71 and the upper connecting rod 72 are docked again and move upward together, repeating the previous work.

[0061] Example 2, reference Figure 1, which is a second embodiment of the present invention, provides: a method for fully automatic thick slurry discharge from a fertilizer production clear liquid sedimentation tank, comprising the following steps:

[0062] Equipment configuration: A pressure sensor is installed at the bottom of the sedimentation tank 1, and a liquid level sensor is installed in the upper middle part.

[0063] Set basic parameters: Based on experience, set the pressure threshold (such as the bottom pressure of the barrel reaches 0.3MPa) and the liquid level threshold (the liquid level is 25% lower than the tank height) as the conditions for starting the discharge of thick slurry.

[0064] Automatic slurry discharge process: When the pressure sensor detects that the pressure at the bottom of the barrel reaches the set threshold, or the liquid level sensor detects that the liquid level is lower than the set value, the system automatically starts and starts the power equipment 6 to discharge the thick slurry; during the slurry discharge process, the slurry discharge frequency is automatically adjusted according to the pressure feedback to maintain stable slurry discharge.

[0065] Cleaning after slurry discharge: After the slurry discharge is completed, start the pipeline flushing program and spray high-pressure water into the pipeline for 3 minutes to prevent the pipeline from being blocked.

[0066] 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 the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fully automatic thick slurry discharge system for a fertilizer production clear liquid sedimentation tank, comprising a sedimentation tank (1), a support frame (2) arranged outside the sedimentation tank (1), a sedimentation pipe (3) arranged at the bottom of the sedimentation tank (1), and a slurry discharge pipe (4) arranged at the bottom of the sedimentation pipe (3), characterized in that: It also includes a slurry discharge control component (5) arranged in the sedimentation tube (3), a power device (6) arranged below the slurry discharge tube (4), a telescopic member (7) arranged on the top of the power device (6), a return channel (11) arranged outside the sedimentation barrel (1), a water outlet (12) arranged between the return channel (11) and the sedimentation barrel (1), and a water inlet (13) arranged between the return channel (11) and the sedimentation tube (3). The slurry discharge control component (5) specifically includes an osmotic separation cylinder (51) arranged in the sedimentation tube (3), a sealing plate (52) arranged at the bottom of the osmotic separation cylinder (51), a lower jigsaw plate (53) arranged below the sealing plate (52), an upper discharge docking hole (54) extending through the top of the sealing plate (52), a lower discharge docking hole (55) extending through the top of the lower jigsaw plate (53), and a top plate group (56) arranged at the opening above the osmotic separation cylinder (51). The water inlet (13) is distributed around the outside of the permeation separation cylinder (51), the lower puzzle plate (53) is rotatably connected to the upper opening of the slurry discharge pipe (4), the lower puzzle plate (53) is attached to the bottom of the sealing plate (52), the upper discharge docking hole (54) and the lower discharge docking hole (55) are staggered, and the telescopic member (7) passes through the slurry discharge pipe (4), the lower puzzle plate (53) and the sealing plate (52) and is connected to the top plate group (56); The top plate assembly (56) specifically includes a lifting plate (561) and a movable plate (562) arranged on the inner side of the permeate separation cylinder (51), an upper leakage hole (563) extending through the top of the lifting plate (561), a lower leakage hole (564) extending through the top of the movable plate (562), and a lifting platform (565) arranged on the outer side of the telescopic member (7); The lifting plate (561) is attached to the bottom of the movable plate (562), the upper leakage hole (563) and the lower leakage hole (564) are staggered, the telescopic member (7) passes through the lifting plate (561) and is connected to the movable plate (562), and the lifting platform (565) is located below the lifting plate (561); The telescopic member (7) specifically includes a lower connecting rod (71) and an upper connecting rod (72) arranged between the power device (6) and the top plate group (56), a sliding groove (73) arranged at the top of the lower connecting rod (71), a sliding rod (74) arranged at the bottom of the upper connecting rod (72), and an elastic member arranged between the sliding rod (74) and the inner wall of the sliding groove (73); The upper connecting rod (72) is located at the top of the lower connecting rod (71), and the sliding rod (74) is slidably inserted into the sliding groove (73).

2. The fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank according to claim 1 is characterized by: The bottom of the sedimentation barrel (1) is configured to be conical, and the conical bottom is connected to the top of the sedimentation tube (3).

3. The fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank according to claim 1 is characterized by: The water inlet (13) has the same height as the osmotic separation cylinder (51), and a one-way osmotic membrane is installed in the water inlet (13).

4. The fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank according to claim 1 is characterized by: A cleaning rod (566) is fixedly connected to the bottom of the lifting plate (561), and the distribution position of the cleaning rod (566) corresponds to the upper drainage docking hole (54).

5. The fully automatic thick slurry discharge system for fertilizer production clear liquid sedimentation tank according to claim 1 is characterized by: A sealing ring is provided on the outer side of the movable plate (562), and a scraper is fixedly connected to the outer side of the lifting plate (561).

6. The fully automatic thick slurry discharge system for the fertilizer production clear liquid sedimentation tank according to claim 1 is characterized by: The elastic member specifically includes a fixing platform (75) and a connecting plate (76) disposed inside the sliding groove (73), a connecting spring (77) disposed between the fixing platform (75) and the connecting plate (76), and a fixing bolt (78) disposed between the lower connecting rod (71) and the fixing platform (75); The connecting plate (76) is connected to the sliding rod (74), and the fixing bolt (78) passes through the outside of the lower connecting rod (71) and into the fixing platform (75).

7. A method for producing a fertilizer production supernatant by fully automatic thick slurry discharge from a sedimentation tank, using the fertilizer production supernatant by fully automatic thick slurry discharge system according to claim 1, characterized in that: The following steps are involved: Equipment configuration: A pressure sensor is installed at the bottom of the sedimentation barrel (1), and a liquid level sensor is installed in the middle and upper part; Set basic parameters: Set pressure threshold and liquid level threshold based on experience as conditions for starting thick slurry discharge; Automatic slurry discharge process: When the pressure sensor detects that the pressure at the bottom of the barrel reaches the set threshold, or the liquid level sensor detects that the liquid level is lower than the set value, the system automatically turns on and starts the power equipment (6) to discharge the thick slurry; during the slurry discharge process, the slurry discharge frequency is automatically adjusted according to the pressure feedback to maintain stable slurry discharge; Cleaning after slurry discharge: After the slurry discharge is completed, start the pipeline flushing program and spray high-pressure water into the pipeline to prevent the pipeline from being blocked.

Images