CN209975493U - A waterwheel type river duckweed cleaning equipment - Google Patents

Abstract

The utility model provides a waterwheel formula river course duckweed clean-up equipment which characterized in that: comprises a waterwheel groove and a waterwheel filtering device arranged in the waterwheel groove; a water inlet and a water outlet are respectively arranged at the two ends of the waterwheel groove; the waterwheel filtering device comprises blades and a hollow shaft, wherein the blades comprise screens, scraping plates and sliding rails, the left sides and the right sides of the two screens are fixed by the sliding rails, a space is formed between the two screens to serve as a screen cavity, and the scraping plates are arranged in the two screen cavities and can slide in the screen cavities along the sliding rails; the two ends of the hollow shaft are through, the side wall of the hollow shaft is provided with a feeding hole, the direction of the feeding hole is always vertical upwards, and a material pushing rod for discharging objects out of the hollow shaft is arranged in the hollow shaft; the blade is combined with the hollow shaft through a bearing, and a blade discharge hole communicated with the screen mesh cavity is formed in the connecting position of the bearing and the blade; the two ends of the hollow shaft are fixed on the side wall of the waterwheel groove, and the blades are arranged in the waterwheel groove in a direction perpendicular to the water flow direction. Simple structure, convenient operation, debris such as duckweed in the high-efficient filtration river.

Description

A waterwheel type river duckweed cleaning equipment

technical field

The utility model relates to the field of river purification, in particular to a river duckweed cleaning device, which can be used for collecting other river surface solids except duckweed.

Background technique

In some rivers flowing through the city, there will be a lot of duckweed, waste water and others. When the conditions such as sunlight, temperature (water temperature), air and other conditions are suitable, the green algae will multiply and form a green mass, that is, Duckweed, a large area of duckweed, is very harmful. It not only blocks the sun and makes the water turbid, but also causes a large number of organic matter to undergo chemical reactions, which increase the number of toxic bacteria and reduce oxygen. Fish and shrimp cannot survive, and seriously damage the river ecological environment. To improve water quality, excess duckweed must be removed first. The method of manual salvage is still the most common, but there are some problems in manual salvage: (1) the labor intensity is high and the salvage efficiency is low; (2) in some rivers with high water flow speed or complicated water flow conditions, manual salvage is very dangerous. Another method is to use a fixed net to filter duckweed in narrow river channels or dams. The biggest disadvantage of this method is that when the filtered duckweed stays on the net and accumulates, it is easy to block the river channel, and the screen needs to be cleaned regularly. Moreover, the cleaning process is complicated, and continuous operation cannot be guaranteed.

SUMMARY OF THE INVENTION

To solve the above problems, the present invention provides the following solutions:

A waterwheel type river duckweed cleaning equipment, comprising a waterwheel tank and a waterwheel filter device installed inside the waterwheel tank; the two ends of the waterwheel tank are respectively provided with a water inlet and a water outlet; the waterwheel filter device includes a blade and a hollow The shaft and blades include screen mesh, scraper plate and slide rail. The screen mesh is divided into upper mesh mesh and lower mesh mesh. The left and right sides of the upper mesh mesh and the lower mesh mesh are fixed by slide rails. There is a space as the screen cavity, the scraper is installed in the screen cavity, and can slide in the screen cavity along the slide rail; both ends of the hollow shaft are transparent, and the side wall is provided with a feeding port. The opening of the hollow shaft is upward, and a push rod for discharging objects is installed in the hollow shaft; the blade is combined with the hollow shaft through a bearing, and the connection position between the bearing and the blade has a blade discharge port that communicates with the screen cavity; the hollow shaft two The end is fixed on the side wall of the waterwheel tank, and the blade is installed in the waterwheel tank perpendicular to the direction of the water flow.

Further, the aperture of the upper screen in the blade is larger than the aperture of the lower screen.

Further, the scraper can slide in the screen cavity under the action of its own gravity.

Further, the aperture of the screen mesh is 1-100mm.

Further, the rotation direction of the waterwheel filter device is opposite to the water flow direction.

Further, after the equipment is installed, the position of the hollow shaft is higher than the water surface.

Further, the push rod is a screw push rod, and the side wall of the screw push rod is threaded, and when rotated, the material is driven to move along the screw thread. Further, the screen is a rigid screen.

This equipment can be set up in parallel in multiple horizontal directions. The requirement for the river surface is that the width does not exceed 20 meters, and the depth is not required. This equipment is mainly used to separate duckweed on the surface of river water, so this equipment is generally installed on the water surface. The installation requirements are that the hollow shaft must be higher than the water surface, and the water tank should be immersed below the water surface as much as possible. Considering the fluid mechanics, where the flow rate of the river is higher, the disturbance caused by this equipment is more severe, so the faster the flow rate of the river during installation, the greater the distance between the hollow shaft and the water surface.

The waterwheel tank is placed in the river channel. When the surface river water enters from the water inlet, the movement direction of the waterwheel blades is opposite to the flow direction of the river water, and the two move relative to each other. The liquid is in contact with the screen. River water and substances with a diameter smaller than the screen aperture flow downstream through the screen holes, and the duckweed with a volume larger than the upper screen aperture stays on the surface of the upper screen, while the duckweed with a volume smaller than the upper screen aperture and larger than the lower screen aperture stays on. in the cavity. When the blade rotates upwards slowly, until the screen leaves the water surface and a certain distance higher than the horizontal plane where the axis of the hollow shaft is located, the duckweed or solid on the blade can enter the hollow shaft under the action of gravity due to its large volume and mass. In the middle, the scraper in the screen cavity slides down under the action of gravity or automatic control, and scrapes the material in the screen cavity down and scrapes it into the hollow shaft for collection. When the blade continues to rotate, the scraper Go back to the edge of the leaf and continue with the next filtering operation. Multiple waterwheel blades perform these operations in sequence. When the duckweed enters into the hollow shaft, the thrust of the thread when the screw feed rod rotates will push the duckweed out of the hollow shaft for centralized collection or processing.

During the treatment process, the waterwheel rotates slowly, and there will be an intermittent filtering gap (that is, when the two adjacent blades are not in contact with the bottom surface of the waterwheel tank at the lowest point, a filter will appear at the end of the blade and the bottom of the tank. Blind area), in view of this situation, 2-3 waterwheel filter devices can be added to the same waterwheel tank, and the aperture of the screen mesh arranged in the direction of the river water flow can be reduced by 20%-50% in turn, so as to overcome the filtering effect. At the same time, it can also be graded and filtered to reduce the single-stage pressure. The rotation speed of the waterwheel blades should not be too fast. If the rotation speed is too fast, the centrifugal force of the filtered duckweed is too large, and it is not easy to be collected into the hollow shaft. If the rotation speed is too fast, the flow state of the river water will be affected.

The beneficial effects of the present invention are:

(1) Simple structure, convenient operation, convenient inspection and maintenance

(2) The separation efficiency is high, and the equipment can be installed upstream to filter the duckweed in the river water flowing from the upstream. It is especially suitable for places where the river surface is wide or the water flow rate is high.

(3) It can be operated continuously, has a certain degree of automation, does not require excessive manpower and material resources, theoretically does not need to clean the screen, and there is no accumulation of solids on the surface of the screen

(4) Energy saving and cost economy. The speed is low and the energy consumption is low. Compared with human salvage, the cost and risk factor are low.

Description of drawings

Fig. 1 is the utility model combination schematic diagram;

Figure 2 is a schematic structural diagram of a waterwheel filter device;

Figure 3 is a schematic view of the structure of the hollow shaft;

Figure 4 is a schematic diagram of the screw push rod.

In the picture: 1. Waterwheel tank; 2. Hollow shaft; 3. Blade; 4. Scraper; 5. Screw push rod; 6. Water inlet; 7. Water outlet; 81. Upper screen; 82. Lower Screen; 9. Slide rail; 10. Blade outlet; 11. Feed inlet.

Detailed ways

The present utility model is now described in detail in conjunction with the accompanying drawings:

Embodiment 1: As shown in Figures 1-4, a waterwheel-type river duckweed cleaning equipment includes a waterwheel tank 1 and a waterwheel filter device installed inside the waterwheel tank 1; the two ends of the waterwheel tank 1 are respectively There is a water inlet 6 and a water outlet 7; the waterwheel filter device includes a blade 3 and a hollow shaft 2, the blade 3 includes a screen, a scraper 4 and a slide rail 9, and the screen is divided into an upper screen 81 and a lower screen 82 , the left and right sides of the upper screen 81 and the lower screen 82 are fixed by the slide rails 9, there is a space between the upper screen 81 and the lower screen 82 as a screen cavity, and the scraper 4 is installed in the screen cavity, And the scraper 4 can slide in the screen cavity under the action of its own gravity; both ends of the hollow shaft 2 are transparent, the side wall is provided with a feeding port 11, the opening direction of the feeding port 11 is upward, and the hollow shaft 2 is installed inside There is a screw push rod 5, the side wall of the screw push rod 5 is threaded, which drives the material to move along the screw thread when rotating; the blade 3 is combined with the hollow shaft through a bearing, and the connection position between the bearing and the blade 3 has a blade that communicates with the screen cavity. The discharge port 10; both ends of the hollow shaft 2 are fixed to the side wall of the waterwheel tank 1, and the blade 3 is installed in the waterwheel tank 1 perpendicular to the water flow direction. The rotation direction of the waterwheel filter device is opposite to the water flow direction, and the hollow shaft 2 is positioned high On the water surface, the aperture of the screen 8 is 1-100 mm, and the aperture of the upper screen 81 in the blade 3 is larger than the aperture of the lower screen 82 . The upper screen 81 and the lower screen 82 are rigid screens.

This equipment can be set up in parallel horizontally or vertically. The requirement for the river surface is that the width should not exceed 20 meters, and the depth is not required. This equipment is mainly used to separate duckweed on the surface of river water, so this equipment is generally installed on the water surface. The installation requirements are that the hollow shaft 2 must be higher than the water surface, and the water tank 1 should be immersed below the water surface as much as possible. Considering the fluid mechanics, where the flow velocity of the river is higher, the disturbance caused by this equipment is more severe, so the faster the flow velocity of the river during installation, the greater the distance of the hollow shaft 2 from the water surface.

The waterwheel tank 1 is placed in the river channel. When the surface river water enters from the water inlet, the movement direction of the blade 3 is opposite to the flow direction of the river water, and the two move relative to each other. The mixed liquid is brought into contact with the upper screen 81 and the lower screen 82 . The river water and the material whose diameter is smaller than the aperture of screen 8 flows downstream through the aperture of the screen, while the duckweed and other solids larger than the aperture of screen 8 are intercepted by the screen 8 and adhere to the screen 8 under the force of the water flow. The duckweed whose volume is larger than the aperture of the upper screen 81 remains on the surface of the upper screen 81 , while the duckweed whose volume is smaller than the aperture of the upper screen 81 and larger than the aperture of the lower screen 82 remains in the cavity of the screen. When the blade 3 rotates upward slowly, the solid on the blade 3 can enter the hollow shaft 2 under the action of gravity due to its large volume and mass, and the scraper 4 in the screen cavity relies on gravity or automatic control. Slide down to scrape the material in the screen cavity down and scrape it into the hollow shaft 2 for collection. When the blade 3 continues to rotate, the scraper 4 returns to the edge of the blade 3 to continue the next filtering operation. Multiple waterwheel filter units perform these operations in sequence.

During the treatment process, the waterwheel rotates slowly, and an intermittent filtering gap will appear (that is, when the two adjacent blades 3 are not in contact with the bottom surface of the waterwheel tank 1 at the lowest point, they will appear at the end of the blade 3 and the bottom of the tank. A filter blind area), in view of this situation, 2-3 waterwheel filter devices can be added to the same waterwheel tank 1, and the screen apertures arranged in the direction of the river water flow can be reduced by 20%-50% in turn. In this way, while overcoming the filtration gap, it can also be graded and filtered, and the single-stage pressure can be reduced. The rotation speed of the waterwheel blade 3 should not be too fast. If the rotation speed is too fast, the centrifugal force of the filtered duckweed is too large, and it is not easy to be collected into the hollow shaft 2. If the rotation speed is too fast, it will also affect the flow state of the river water, and the increase of disturbance will increase the efficiency of duckweed separation. reduce.

The utility model combines the advantages of the separation principle of the waterwheel and the screen and carries out reasonable transformation, and has the advantages of high separation efficiency, simple structure, convenient operation, stable operation, energy saving and automatic control. It has a good effect on the treatment of river water with high density of duckweed on the water surface. At the same time, it can be used to clean up other solid wastes on the river.

Claims (8)

1. A waterwheel type river duckweed cleaning equipment, comprising a waterwheel tank and a waterwheel filter device installed inside the waterwheel tank; both ends of the waterwheel tank are respectively provided with a water inlet and a water outlet; the waterwheel filter device comprises a blade and hollow shaft, the blades include screen, scraper and slide rail, the screen is divided into upper screen and lower screen, the left and right sides of the upper screen and lower screen are fixed by slide rails, the upper screen and the lower screen are There is a space between them as the screen cavity, the scraper is installed in the screen cavity, and can slide in the screen cavity along the slide rail; both ends of the hollow shaft are transparent, and the side wall has a feeding port, The opening of the material port is always vertically upward, and the hollow shaft is installed with a push rod for discharging objects from the hollow shaft; the blade is combined with the hollow shaft through a bearing, and the connection position between the bearing and the blade is provided with a blade discharge material that communicates with the screen cavity. The two ends of the hollow shaft are fixed on the side wall of the waterwheel tank, and the blades are installed in the waterwheel tank perpendicular to the direction of the water flow. 2. A waterwheel type river duckweed cleaning device as described in claim 1, wherein the aperture of the upper screen in the blade is larger than the aperture of the lower screen. 3 . The waterwheel type river duckweed cleaning equipment according to claim 1 , wherein the scraper can slide in the screen cavity under the action of its own gravity. 4 . 4. A kind of waterwheel type river duckweed cleaning equipment as described in claim 2, is characterized in that: the aperture of described screen mesh is 1-100mm. 5. A waterwheel type river duckweed cleaning device as described in claim 1, wherein the rotation direction of the waterwheel filter device is opposite to the direction of the water flow. 6. A waterwheel type river duckweed cleaning equipment as described in claim 1, characterized in that: after the equipment is installed, the position of the hollow shaft is higher than the water surface. 7. A waterwheel-type river duckweed cleaning device as claimed in claim 1, characterized in that: the pusher rod is a screw pusher rod, and the sidewall of the screw pusher rod has a thread, which drives the material to move along the thread during rotation. 8. A waterwheel type river duckweed cleaning equipment as described in claim 1, wherein the screen is a rigid screen.

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