A small and efficient sedimentation device for a water-saving irrigation system

Abstract

The present invention relates to the technical field of sedimentation equipment, and particularly to a small and efficient sedimentation equipment for a water-saving irrigation system, comprising: a pool body; a water inlet trough, which is provided on the pool body; a water inlet, which is provided on the upper side of the water inlet trough for introducing sewage into the water inlet trough; a filtering trough, which is provided beside the water inlet trough and is communicated with the water inlet trough from the bottom; a water outlet, which is provided at the top of the filtering trough for discharging the precipitated and purified water; inclined plates, a plurality of inclined plates are arranged in parallel and obliquely inside the filtering trough, and the number of the inclined plates can be set according to the usage requirements; a sludge discharge port; the sludge discharge port is arranged below the pool body; compared with the existing inclined plate type sedimentation equipment, an angle adjustment device is arranged on the pool body, and the angle adjustment device can simultaneously adjust the included angle between all the inclined plates and the horizontal plane, so as to control the sedimentation rate of the equipment and the sludge discharge effect of the inclined plates.

Description

Technical Field

[0001] The present invention relates to the technical field of sedimentation equipment, and specifically to a small and efficient sedimentation equipment for a water-saving irrigation system. Background Art

[0002] Green development is economic growth and social development with the goals of efficiency, harmony, and sustainability. In recent years, with the continuous strengthening of the concept of green development in China, the concept of energy conservation and environmental protection has gradually taken root in people's hearts.

[0003] Under the continuous influence of the concept of energy conservation and environmental protection, the application of water-saving irrigation in agriculture, forestry, and municipal greening watering has also been increasing. The water-saving irrigation system generally adopts the irrigation methods of sprinkler pipes or drip irrigation. Since the water flow is transported through pipelines and the nozzles or drippers are prone to blockage, the requirement for water quality is relatively high. In order not to occupy domestic water, the existing water-saving irrigation systems generally directly draw the water from streams, rivers, filter and sediment it, and then directly transport it to the irrigation system for irrigation.

[0004] In order to sediment impurities such as sediment in the water of streams and rivers, sedimentation equipment is generally used. The commonly used sedimentation equipment includes horizontal sedimentation equipment and inclined plate sedimentation equipment. The horizontal sedimentation equipment requires a larger floor area than the inclined plate sedimentation equipment, and the sedimentation time is also longer. It is generally used in large-scale water purification plants and is not suitable for irrigation systems. Compared with the horizontal sedimentation equipment, the inclined plate sedimentation equipment has a sedimentation efficiency 4 times that of the horizontal sedimentation equipment, higher sedimentation efficiency, and smaller floor area, meeting the requirements of the water-saving irrigation system.

[0005] The existing inclined plate sedimentation equipment is to incline multiple filter plates and then sediment and purify the water by setting the water flow as downward flow or upward flow. According to the formula: where A is the effective working area of the inclined plate, n is the number of inclined plates, A iLet \(A\) be the area of a single inclined plate, and \(\theta\) be the inclination angle between the inclined plate and the horizontal direction. Its characteristic is that the larger the effective working area \(A\) provided, the higher its efficiency. Under the condition of the same number of inclined plates, the smaller the angle \(\theta\) between the inclined plate and the horizontal direction, the higher its efficiency. However, the smaller the angle \(\theta\) between the inclined plate and the horizontal direction, the more unfavorable it is for the sludge discharge of the equipment. Therefore, for the convenience of sludge discharge, the current inclined plate type sedimentation equipment generally sets the value of the angle \(\theta\) between the inclined plate and the horizontal direction between \(50 - 55^{\circ}\), and the set inclined plate has a fixed angle. If adjustment is needed, it can only be adjusted one by one manually. Although the inclined plate can discharge sludge to a certain extent by setting the inclination angle, after long-term use of the inclined plate type sedimentation equipment, there will still be sludge continuously accumulating on the plate. Excessive accumulated sludge may cause deformation or damage of the inclined plate, and at the same time, it will also affect the water outlet efficiency. Because the inclined plates are densely arranged and numerous in quantity, it is not suitable to use equipment to clean them, and personnel are required to remove the inclined plates and clean or replace them. And an inclined plate type sedimentation equipment often has dozens or hundreds of inclined plates, resulting in a large workload and complex work for workers.

[0006] In order to further improve the sedimentation rate of the inclined plate type sedimentation equipment and solve the problem of difficult cleaning of the inclined plates of the inclined plate type sedimentation equipment, a small and efficient sedimentation equipment for a water-saving irrigation system is proposed. Aiming at the small-scale water-saving irrigation requirements, the sedimentation rate and sludge discharge effect are jointly improved by automatically adjusting the angle of each inclined plate. Summary of the Invention

[0007] The purpose of the present invention is to provide a small and efficient sedimentation equipment for a water-saving irrigation system. By setting an angle adjustment device to adjust the angle between the inclined plate and the horizontal direction, the angle of the inclined plate is adjusted, so that it can sediment the dirt in the water at a higher rate during use, and can quickly discharge sludge by adjusting the angle of the inclined plate when sludge discharge is required, without allowing sludge to affect its normal use, and at the same time, there is no need to manually remove the inclined plates one by one for cleaning, improving the convenience of the equipment.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A small and efficient sedimentation equipment for a water-saving irrigation system, comprising:

[0010] Pool body; water inlet trough, with a water inlet trough opened on the pool body; water inlet, a water inlet for introducing sewage into the water inlet trough is opened on the upper side of the water inlet trough; filtering trough, a filtering trough is opened beside the water inlet trough, and the filtering trough is communicated with the water inlet trough from the bottom; water outlet, a water outlet for discharging the precipitated and purified water is opened at the top of the filtering trough; inclined plates, a plurality of inclined plates are arranged in parallel and inclined inside the filtering trough, and the number of inclined plates can be set according to the usage requirements; sludge discharge port; a sludge discharge port is arranged below the pool body, and the sludge discharge port is communicated with both the water inlet trough and the filtering trough; an angle adjustment device is arranged on the pool body, and the angle adjustment device controls the precipitation rate of impurities in the water and the sludge discharge effect of the inclined plates by adjusting the included angle between the inclined plates and the horizontal plane. The angle adjustment device can be a motor, a gear and rack, or other devices or mechanisms that can adjust the angle between the inclined plates and the horizontal plane.

[0011] By setting the angle adjustment device, each inclined plate can be adjusted in angle, so that the angle between the inclined plate and the horizontal plane can be controlled. When in use, it is set according to the turbidity of the water to be precipitated. If the water with high turbidity needs to be precipitated quickly, the included angle between the inclined plate and the horizontal plane is adjusted to be smaller to increase the effective working area of the inclined plate, thereby increasing the precipitation rate of the dirt in the water. If the turbidity of the water is low, the included angle between the inclined plate and the horizontal plane can be adjusted to be larger as needed. When discharging sludge from the inclined plate, the included angle between the inclined plate and the horizontal plane can also be adjusted to be larger, so that the sludge precipitated on the inclined plate automatically falls under the action of gravity, facilitating discharge from the sludge discharge port outside the pool body. The angle adjustment device makes the precipitation speed of the equipment adjustable without the need to remove and reinstall the inclined plates, and does not affect its sludge discharge effect, and there is no need to manually remove the inclined plates one by one for cleaning, improving the convenience of the equipment.

[0012] Preferably, the angle adjustment device includes a first rotating shaft fixedly installed below both sides of each inclined plate. Each inclined plate is rotatably installed in the filter tank through the first rotating shaft. Sliding grooves are formed on both sides of each inclined plate. An adjusting frame is arranged on the tank body, and a driving device is arranged on the tank body. The driving device is connected to the adjusting frame. The driving device can be a cylinder, an electric push rod, an electric cylinder or other devices or mechanisms capable of driving the adjusting frame to reciprocate horizontally. A plurality of second rotating shafts corresponding to the number of inclined plates are horizontally and fixedly installed on the adjusting frame. The plurality of second rotating shafts on the adjusting frame correspond to and are inserted into the sliding grooves on one side of the plurality of inclined plates one by one. When the driving device drives the adjusting frame to move horizontally, each second rotating shaft on the adjusting frame will drive the connected inclined plate to rotate. Since the adjusting frame and each inclined plate are rotationally connected through the second rotating shaft on the adjusting frame and the sliding groove on the inclined plate, the second rotating shaft can not only drive the inclined plate to rotate, but also slide relatively inside the sliding groove. Therefore, the phenomenon of jamming will not occur when adjusting the angle of the inclined plate. After connecting a plurality of inclined plates through one adjusting frame, only one driving device is needed to drive the adjusting frame to simultaneously control the included angle between all inclined plates and the horizontal plane, realizing the synchronous control of the angle of each inclined plate and improving the convenience of control.

[0013] Preferably, a cleaning ring is slidably installed in the sliding grooves on both sides of each inclined plate. Each cleaning ring is annularly sleeved on the corresponding inclined plate. The clearance between each cleaning ring and the front and back surfaces of the corresponding inclined plate does not exceed 2 mm. The cleaning ring can be changed according to the shape of the inclined plate used as long as the cleaning ring can be sleeved on the inclined plate and meet the requirement of the clearance. When the equipment is not working, after all the water in the tank body is drained, the driving device controls the adjusting frame to drive each inclined plate to rotate, increasing the included angle between each inclined plate and the horizontal plane. At this time, the cleaning ring will slide down along the sliding groove of the corresponding inclined plate under the action of its own gravity. During the sliding process, each cleaning ring will scrape the plate surface of the corresponding inclined plate, scraping off the sludge adhering to the plate surface of the inclined plate. After the sludge is scraped off, it will fall to the mud discharge port and be discharged out of the tank body through the mud discharge port. A reset device is installed on each cleaning ring. The reset device can be a cylinder or a motor cooperating with a steel wire to reset the cleaning ring, or other devices or mechanisms capable of automatically resetting the cleaning ring after scraping the inclined plate. This can prevent the sludge adhering to the inclined plate from drying and solidifying and being difficult to clean when the sedimentation tank is not in use. Although simply adjusting the angle between the inclined plate and the horizontal plane by the adjusting frame can discharge the sludge adhering to the inclined plate to a certain extent, the sludge discharge is only by using the gravity of the sludge itself, and the sludge discharge effect is limited. The cleaning ring can further scrape and clean the inclined plate, improving the cleaning effect of the inclined plate and also eliminating the need for additional manual labor.

[0014] Preferably, the reset device includes a cavity formed inside the cleaning ring. The presence of the cavity reduces the overall weight of the cleaning ring, increases the buoyancy of the cleaning ring, and at the same time, the volume of the cleaning ring does not need to be increased, so the water outlet gap between the inclined plates will not be reduced, and the water outlet efficiency will not be affected. Since the cleaning ring is used after all the water inside the pool is drained, the presence of the cavity does not interfere with the use of the cleaning ring. When the sedimentation tank is reused and the pool is filled with water, the cleaning ring floats upward along the chute on the inclined plate where it is located under the action of the cavity until it can no longer float upward, completing the reset. Using the cavity to reset the cleaning ring can achieve reset without an additional power source and structure, saving the production and manufacturing cost of the equipment. When there is water, the sludge is discharged by the gravity of the sludge itself. At this time, if the cleaning ring slides downward to scrape and clean the inclined plate where it is located, the sludge will be dispersed, making the water more turbid. The presence of the cavity prevents the cleaning ring from sliding downward, ensuring that the cleaning ring will not make the water more turbid when there is water in the pool.

[0015] Preferably, a slope for reducing resistance during sludge scraping is provided on the lower side of each cleaning ring. The slope enables the cleaning ring to remove the sludge from the inclined plate like a razor when colliding with the sludge. At the same time, the slope can play a guiding role, making the sludge scraped off the inclined plate move away from the inclined plate. Then, the sludge that has lost its adhesion falls towards the sludge outlet under its own gravity. Compared with a cleaning ring with a flat bottom, it avoids the continuous accumulation of sludge at the bottom of the cleaning ring when the cleaning ring scrapes the sludge by gravity, resulting in an increasing resistance to the downward movement of the cleaning ring, and ultimately may cause the cleaning ring to stop in the middle of the inclined plate and unable to clean the entire inclined plate smoothly. The design of the slope improves the stability of the cleaning ring to scrape off all the sludge on the entire inclined plate at one time.

[0016] Preferably, balls are provided between both sides of each cleaning ring and the two chutes on the inclined plate where it is located. The balls are selected according to the pH value of the water purified by the equipment and can be made of plastic or corrosion-resistant metal. The plastic balls will form a smooth mucous membrane under the action of algae when soaked in water for a long time, making the balls smoother. The balls can convert the sliding friction between the cleaning ring and the chute into rolling friction, preventing the cleaning ring from being unable to slide smoothly due to excessive friction between the cleaning ring and the chute when scraping the sludge on the inclined plate by gravity. At the same time, the setting of the balls reduces the friction between the cleaning ring and the chute, enabling the cleaning ring to slide downward at a higher speed when moving downward. After the speed increases, the kinetic energy of the cleaning ring increases, and when colliding with the sludge on the inclined plate, it can better scrape off the sludge from the inclined plate, further improving the cleaning effect on the inclined plate.

[0017] Preferably, two cleaning blocks for discharging the sludge inside the chute to the outside of the chute are fixedly installed on the lower side of each cleaning ring, and the two cleaning blocks on each cleaning ring are respectively located in the two chutes of the inclined plate where the cleaning ring is located. The cleaning block is also in the shape of a slope, and the whole cleaning block is a wedge-shaped block. During the falling process, the sludge inside the chute accumulates continuously on the inclined surface of the cleaning block under the continuous downward movement of the cleaning block. As the sludge accumulates more and more, it will eventually be continuously guided by the inclined surface of the cleaning block and discharged outside the chute, improving the stability of the cleaning ring during the falling process. If the cleaning block has a flat bottom, since the bottom of the chute is the first rotating shaft, the chute cannot completely pass through the entire inclined plate. Therefore, during the continuous downward sliding process of the cleaning ring, the flat-bottomed cleaning block will continuously squeeze the sludge inside the chute until the energy dissipation ring cannot fall. The squeezed sludge will increase continuously over time and with the increase in the number of times the cleaning ring is used until the entire chute is blocked.

[0018] Preferably, when the adjustment frame drives the cleaning ring to scrape the sludge on the surface of the inclined plate, the angle between the inclined plate and the horizontal plane is less than 90°. When the sedimentation tank sedimentates the contaminants in the water, the contaminants generally accumulate on the upper surface of the inclined plate to form sludge. When the adjustment frame drives the cleaning ring to scrape the sludge on the surface of the inclined plate, control the angle between the inclined plate and the horizontal plane to be less than 90°, so that the cleaning ring can slide down closely along the side with the most sludge on the inclined plate under the action of gravity, scraping the sludge as quickly as possible, and further improving the cleaning effect of the cleaning ring on the surface of the inclined plate.

[0019] Preferably, a pressure sensor for detecting the accumulation of sludge on the inclined plate is arranged on the pool body. The pressure sensor is located between the driving device and the pool body, and the pressure sensor is electrically connected to the driving device. As the sludge accumulates on the inclined plate, the weight of the inclined plate becomes larger and larger, and the inclined plate will have a tendency to rotate gradually in the horizontal direction with the first rotating shaft as the axis. As the tendency continues to increase, the pressure exerted by the side wall of the chute on the inclined plate on the second rotating shaft will also become larger and larger. The second rotating shaft will also give a downward pulling force to the adjustment frame fixedly installed with it, and the adjustment frame will pull the driving device downward. Eventually, the pressure of the pressure sensor below the driving device will become larger. By setting the detection value of the pressure sensor, when the pressure sensor reaches the set value, it will feedback to the driving device. The driving device controls the adjustment frame to move horizontally and adjusts the angle between the inclined plate and the horizontal plane to increase through the adjustment frame, so that the sludge accumulated on the inclined plate falls off the inclined plate under its own gravity. After a set time, the inclined plate is restored to the working angle to continue the sedimentation work on the water flow. The setting of the pressure sensor improves the automation and intelligence of the equipment.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. A small and efficient sedimentation device for a water-saving irrigation system according to the present invention, compared with the existing inclined plate sedimentation device, is provided with an angle adjustment device. By rotatably installing the inclined plates inside the pool body and cooperating the driving device with the adjusting frame, when the driving device controls the horizontal movement of the adjusting frame, the included angle between all the inclined plates and the horizontal plane can be adjusted at one time, so that the user can adjust the sedimentation rate of the device for the dirt in the water according to the turbidity of the water. Moreover, the angle adjustment device can also discharge the sludge accumulated on the inclined plates by increasing the included angle between all the inclined plates and the horizontal plane at one time, without manually removing the inclined plates one by one for cleaning, improving the convenience of sludge discharge from the inclined plates.

[0022] 2. A small and efficient sedimentation device for a water-saving irrigation system according to the present invention is provided with a cleaning ring on each inclined plate. After the water inside the pool body is completely drained in cooperation with the angle adjustment device, the driving device of the angle adjustment device pulls the adjusting frame to drive all the inclined plates to rotate in the vertical direction. Under the action of gravity, the cleaning ring slides down along the inclined plates, scraping the sludge on the inclined plates during the sliding process, so that the sludge falls into the sludge discharge port below, improving the sludge discharge effect of the inclined plates, ensuring that the sludge on the inclined plates will not solidify on the inclined plates when the device is not in use, and also using the principle of buoyancy. When the device is refilled with water for work, the cleaning ring can be reset by the buoyancy of the water without an additional power source.

[0023] 3. A small and efficient sedimentation device for a water-saving irrigation system according to the present invention is also provided with a pressure sensor for detecting the degree of sludge accumulation on the inclined plates. The pressure sensor cooperates with the driving device on the angle adjustment device. The pressure sensor detects the pressure given by the driving device to the pressure sensor. When the sludge accumulates on the inclined plates, the inclined plates transfer the pressure to the adjusting frame and finally to the pressure sensor. When the pressure sensor detects that the pressure is greater than the set value, it will transmit a signal to the driving device, and the driving device drives the adjusting frame to adjust the angle between the inclined plates and the horizontal plane for sludge discharge, improving the automation and intelligent level of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0025] Figure 2 is an internal structure three-dimensional diagram of the present invention;

[0026] Figure 3 is a schematic structure diagram when the inclined plates of the present invention are performing sedimentation work;

[0027] Figure 4 is a schematic structure diagram when the inclined plates of the present invention are performing sludge discharge work;

[0028] Figure 5 Schematic diagram of the installation structure between the inclined plate and the adjusting frame of the present invention;

[0029] Figure 6 Schematic diagram of the installation structure between the inclined plate and the cleaning ring of the present invention;

[0030] Figure 7 For the present invention Figure 6 Enlarged view of A in;

[0031] Figure 8 Schematic diagram of the structure of the cleaning ring in the second embodiment of the present invention.

[0032] In the figure: 1, pool body; 2, water inlet trough; 3, water inlet; 4, filtration trough; 5, water outlet; 6, inclined plate; 7, sludge discharge port; 8, first rotating shaft; 9, sliding groove; 10, adjusting frame; 11, driving device; 12, second rotating shaft; 13, cleaning ring; 14, cavity; 15, slope; 16, ball; 17, cleaning block; 18, pressure sensor; 19, steel wire. Specific embodiments

[0033] Embodiment 1:

[0034] Refer to Figures 1 to 7 , a small and efficient sedimentation device for a water-saving irrigation system, including: 1, pool body; 2, water inlet trough; 3, water inlet; 4, filtration trough; 5, water outlet; 6, inclined plate; 7, sludge discharge port; 8, first rotating shaft; 9, sliding groove; 10, adjusting frame; 11, driving device; 12, second rotating shaft; 13, cleaning ring; 14, cavity; 15, slope; 16, ball; 17, cleaning block; 18, pressure sensor.

[0035] The pool body 1 is fixedly installed on the ground with the assistance of a frame. The upper part of the pool body 1 is square, and the lower part is funnel-shaped. A sludge discharge port 7 is opened at the bottom of the funnel shape. A valve is installed on the sludge discharge port 7 to control the discharge of sludge outside the pool body 1. The pool body 1 is divided into two halves by a partition vertically installed in the middle. One half of the smaller space is the water inlet tank 2, and one half of the wider space is the filtration tank 4. The bottom of the filtration tank 4 is communicated with the bottom of the water inlet tank 2, and both are communicated with the lower funnel-shaped space. An inlet 3 is opened on the upper side of the water inlet tank 2, and the inlet 3 is connected to an external pumping device. An outlet 5 is opened on the upper side of the filtration tank 4, and the outlet 5 is connected to a collection tank outside for collecting clean water. The inclined plate 6 is a straight plastic plate. The number of inclined plates 6 is ten. A rotating shaft one 8 is fixedly installed at the lower part of the left and right sides of each inclined plate 6. The ten inclined plates 6 are horizontally and evenly arranged and are rotatably installed inside the filtration tank 4 through the rotating shafts one 8 on both sides. A chute 9 is opened on both sides of each inclined plate 6. A driving device 11 is horizontally and fixedly installed above the pool body 1. The driving device 11 uses a servo electric cylinder. A pressure sensor 18 is fixedly installed between the driving device 11 and the pool body 1. The adjusting frame 10 is horizontally arranged inside the filtration tank 4, and the adjusting frame 10 is fixedly connected to the output end of the driving device 11. Ten rotating shafts two 12 are horizontally and fixedly installed on the side wall of the adjusting frame 10 with threads. The ten rotating shafts two 12 are horizontally evenly distributed on the adjusting frame 10. The distance between two adjacent rotating shafts two 12 is the same as the distance between two adjacent rotating shafts one 8. The ten rotating shafts two 12 are opposite to the chutes 9 on one side of the ten inclined plates 6 and are sequentially inserted into the chutes 9 on the side walls of the corresponding inclined plates 6 in order. A cleaning ring 13 is sleeved on each inclined plate 6. The cleaning rings 13 are all made of plastic. The two mating surfaces between the cleaning ring 13 and the front and back two surfaces of the inclined plate 6 and the mating gaps between the two surfaces are both 1 mm. Each cleaning ring 13 is clamped into the chutes 9 on both sides of the corresponding inclined plate 6 and can move up and down along the chutes 9 on both sides of the corresponding inclined plate 6. Each cleaning ring 13 is located below the corresponding rotating shaft two 12. Ball bearings 16 are arranged between the left and right sides of each cleaning ring 13 and the two chutes 9 on the corresponding inclined plate 6. A cleaning block 17 is fixedly installed on the left and right sides of each cleaning ring 13. The two cleaning rings 13 are respectively located in the two chutes 9 on the corresponding inclined plate 6. The cleaning block 17 on each cleaning ring 13 is wedge-shaped. Two cavities 14 are opened inside each cleaning ring 13. The buoyancy of each cleaning ring 13 in water is greater than the gravity of the cleaning ring 13. Slopes 15 are arranged on the two surfaces of each cleaning ring 13 opposite to the front and back two surfaces of the inclined plate 6.

[0036] The specific working process is as follows:

[0037] The driving device 11 is in the extended state, and the angle of each inclined plate 6 is 30° with respect to the horizontal plane under the drive of the adjusting frame 10. Open the water pump connected to the outside at the water inlet 3, and introduce the river water with flocculant added or the muddy water mixed with sludge into the water inlet tank 2 from above the water inlet tank 2. The rising speed of the water level inside the filter tank is lower than 1.8 m / h. The water entering the inside of the water inlet tank 2 will flow from below the water inlet tank 2 into the funnel-shaped bottom below the pool body 1. After filling the funnel-shaped bottom below the pool body 1, the water will continue to rise. Since there is a cavity 14 inside the cleaning ring 13, the buoyancy of the water will drive the cleaning ring 13 on the inclined plate 6 to float upward along the sliding grooves 9 on both sides of the inclined plate 6 until it can no longer float upward. The flocs in the water are blocked by the inclined plate 6 and precipitate under their own gravity. Part of the precipitate accumulates on the inclined plate 6 to form sludge, and part of the precipitate directly falls on the funnel-shaped bottom of the bottom and is discharged from the sludge discharge port 7 at the bottom to the outside of the pool body 1. The purified water after sedimentation and filtration is discharged from the water outlet 5 above the filter tank 4 to the external collection tank for collection, and the collected water will be used for the water-saving irrigation system.

[0038] As the equipment is used for a longer time, sludge continuously accumulates on the upper surface of the inclined plate 6. The mass of the sludge on the inclined plate 6 increases continuously. The sludge on the inclined plate 6 will drive the inclined plate 6 to have a tendency to rotate horizontally, and will pull the second rotating shaft 12 inserted inside the chute 9 downward through the chute 9 on the side wall of the inclined plate 6. The second rotating shaft 12 will in turn pull the adjusting frame 10 fixedly connected to it. The adjusting frame 10 will finally transmit the downward pulling force to the driving device 11 connected to it. The pressure applied by the driving device 11 to the pressure sensor 18 increases. When the pressure increases to the set value, the pressure sensor 18 feeds back a signal to the driving device 11. The driving device 11 controls its output end to slowly retract horizontally at a speed of 0.02 m / s and drives the adjusting frame 10 to move horizontally in the direction of the driving device 11. The adjusting frame will simultaneously pull all the inclined plates 6 to rotate vertically through the second rotating shafts 12 inserted into the chutes 9 on each inclined plate 6. The angle between the inclined plate 6 and the horizontal plane increases. When the angle between the inclined plate 6 and the horizontal plane reaches 70°, the driving device 11 stops retracting and stops for two minutes, allowing the sludge on the inclined plate 6 to fall downward to the sludge discharge port 7 under the action of its own gravity. At this time, the cleaning ring 13 will not fall under the buoyancy of water, but because the inclined plate 6 rotates upward and the adjusting frame 10 can only move horizontally, the cleaning ring 13 will also be pressed down along the chute 9 on the inclined plate 6 by the adjusting frame 10. Although the cleaning ring 13 cannot scrape the entire inclined plate 6 due to the obstruction of buoyancy, it can scrape the sludge on the upper half of the inclined plate 6. The sludge on the upper half is scraped to the lower part and accumulates with the lower sludge, making it easier for the sludge to fall from the inclined plate 6 under the action of its own gravity. When the set time is reached, the driving device 11 extends again to push the adjusting frame 10 to move horizontally in the direction away from the driving device 11, and adjusts the inclined plate 6 back to an angle of 30° with the horizontal plane to continue working. Because the angle adjustment of the inclined plate 6 in water requires a large starting torque for the driving device 11, it runs at a low speed, and running at a low speed during the adjustment process can also ensure that the dirt in the water will not be stirred by the water flow and make the water flow too turbid.

[0039] When the water demand of the irrigation system is met and the equipment needs to stop, the stop program is started. The water inlet 3 stops admitting water, the driving device 11 retracts and drives the adjusting frame 10 to move in the direction of the driving device 11. The adjusting frame 10 drives all the inclined plates 6 to rotate to 80°. The sludge discharge port 7 discharges all the sludge and water inside the tank body 1. As the water level drops, the cleaning ring 13 also slides downward along the chute 9 of the inclined plate 6 where it is located under the action of its own gravity. The ball 16 between the cleaning ring 13 and the chute 9 enables it to slide more smoothly. The slope 15 on the cleaning ring 13 will scrape off all the sludge on the inclined plate 6 during the sliding process and discharge it outside the tank body 1 along with the water flow. The 80° inclined inclined plate 6 allows one side of the cleaning ring 13 to fall along the upper surface of the inclined plate 6 during the falling process of the cleaning ring 13, so that the upper surface where more sludge accumulates can be better cleaned. As the cleaning ring 13 falls, the cleaning blocks 17 arranged on both sides of each cleaning ring 13 will continuously shovel the sludge inside the chute 9 where they are located outside the chute 9 during the falling process, ensuring the cleanliness inside the chute 9. Thus, the entire work process is completed.

[0040] Embodiment 2:

[0041] Reference Figure 8 , different from Embodiment 1: The surfaces of the cleaning ring 13 opposite to the front and back surfaces of the inclined plate 6 are no longer made of plastic plates, and the slope 15 is no longer provided. Instead, it is cut off in the middle and two steel wires 19 are provided at the positions opposite to the front and back surfaces of the inclined plate 6. The two steel wires 19 are respectively pressed against the front and back surfaces of the inclined plate 6. The two steel wires 19 and the plastic parts slidably installed on both sides of the inclined plate 6 cooperate to enclose a cleaning ring 13. The cavity 14 is arranged inside the plastic parts on the left and right sides of the cleaning ring 13.

[0042] When in use, it is the same as Embodiment 1. That is, after draining the water, the driving device 11 is controlled to adjust the angle of the inclined plate 6 so that when the cleaning ring 13 falls under the action of gravity, the sludge on the surface of the inclined plate 6 is scraped and cleaned. Compared with Embodiment 1, the steel wire 19 occupies less space, and during the precipitation of impurities in water by the inclined plate 6, the water flow can pass through between the two inclined plates 6 faster. Because the contact surface between the steel wire 19 and the inclined plate 6 is small and the friction force is small, it can be installed close to the surface of the inclined plate 6 and can scrape more cleanly during scraping. The steel wire 19 can also reduce the total mass of the cleaning ring 13, making it easier to float and reset under the buoyancy of water. However, the disadvantage is that due to the decrease in weight, when scraping and cleaning the inclined plate 6 with too much accumulated sludge, it is easy to be stuck by the sludge in the middle of the inclined plate 6 due to insufficient power of the cleaning ring 13 and unable to scrape all the sludge on the entire inclined plate 6.

[0043] The functions and implementation processes not described in this embodiment are the same as those in Embodiment 1.

[0044] The above embodiments are only illustrative examples among many embodiments of the present invention. There can be various changes without departing from the principle of the present invention. Embodiments obtained by those skilled in the art through changes to the present invention without creative efforts also fall within the protection scope of the present invention.

Claims

1. A small and efficient sedimentation device for a water-saving irrigation system, comprising: A pool body (1); An inlet trough (2), which is provided on the pool body (1); An inlet (3), which is provided on the upper side of the inlet trough (2) for introducing sewage into the inlet trough (2); A filter trough (4), which is provided beside the inlet trough (2); An outlet (5), which is provided at the top of the filter trough (4) for discharging the sediment-purified water; Inclined plates (6), a plurality of inclined plates (6) are arranged in parallel and inclined inside the filter trough (4); A sludge discharge port (7), which is provided below the pool body (1), and the sludge discharge port (7) is communicated with both the inlet trough (2) and the filter trough (4); It is characterized in that: an angle adjustment device is provided on the pool body (1), and when the sedimentation device is working, the angle adjustment device makes the angle between the inclined plate (6) and the horizontal plane smaller to enable the device to obtain a higher sedimentation rate, and at the same time, during the sludge discharge process, the angle between the inclined plate (6) and the horizontal plane is adjusted to increase to ensure the sludge discharge effect on the inclined plate; The angle adjustment device includes a first rotating shaft (8) fixedly installed below both sides of each inclined plate (6), each inclined plate (6) is rotatably installed in the filter trough (4) through the first rotating shaft (8), sliding grooves (9) are provided on both sides of each inclined plate (6), an adjustment frame (10) for simultaneously adjusting the angles of a plurality of inclined plates (6) is provided on the pool body (1), a driving device (11) is provided on the pool body (1), the driving device (11) controls the horizontal reciprocating movement of the adjustment frame (10), a plurality of second rotating shafts (12) corresponding to the number of inclined plates (6) are horizontally and fixedly installed on the adjustment frame (10), and the plurality of second rotating shafts (12) on the adjustment frame (10) correspond to and are inserted into the sliding grooves (9) on one side of the plurality of inclined plates (6); A cleaning ring (13) is slidably installed in common in the sliding grooves (9) on both sides of each inclined plate (6), each cleaning ring (13) is annularly sleeved on the corresponding inclined plate (6), and the cleaning ring (13) is located below the second rotating shaft (12); Each cleaning ring (13) scrapes and cleans the plate surface of the inclined plate (6) by utilizing the gravity of the cleaning ring (13) in cooperation with the adjustment frame (10) when the device is out of use, and a reset device for resetting is installed on each cleaning ring (13); The reset device includes a cavity (14) opened inside the cleaning ring (13), and the cavity (14) reduces the overall weight of the cleaning ring (13) and makes the gravity of the cleaning ring (13) less than the buoyancy of the cleaning ring (13) in water.

2. The small and highly efficient sedimentation device for a water-saving irrigation system according to claim 1, characterized in that: A slope (15) for reducing resistance is provided on the lower side of each cleaning ring (13) when scraping sludge.

3. The small-scale high-efficiency sediment precipitation device for a water-saving irrigation system according to claim 2, characterized in that: A ball (16) is provided between each cleaning ring (13) and the sliding groove (9).

4. The small and highly efficient sedimentation device for a water-saving irrigation system according to claim 3, characterized in that: Two cleaning blocks (17) for shoveling sludge inside the chute (9) out of the chute (9) are fixedly mounted on the lower side of each cleaning ring (13). The two cleaning blocks (17) on each cleaning ring (13) are respectively located in the two chute (9) of the inclined plate (6) where the cleaning ring (13) is located.

5. The small and efficient sedimentation equipment for a water-saving irrigation system according to claim 4, characterized in that: When the regulating frame (10) drives the cleaning ring (13) to scrape away the sludge on the surface of the inclined plate (6), the angle between the inclined plate (6) and the horizontal plane is less than 90 degrees.

6. The small and efficient sedimentation device for a water-saving irrigation system according to claim 1, characterized in that: The tank body (1) is provided with a pressure sensor (18) for detecting the accumulation of sludge on the inclined plate (6); the pressure sensor (18) is located between the driving device (11) and the tank body (1); and the pressure sensor (18) is electrically connected to the driving device (11).

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