CN209975493U

CN209975493U - Waterwheel formula river course duckweed clean-up equipment

Info

Publication number: CN209975493U
Application number: CN201920659992.7U
Authority: CN
Inventors: 祁伟; 汪静; 谭敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-21
Anticipated expiration: 2029-05-09

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

Waterwheel formula river course duckweed clean-up equipment

Technical Field

The utility model relates to a river course purifies the field, especially relates to a river course duckweed clean-up equipment, can be used to the collection of other river course surface solids except duckweed simultaneously.

Background

In rivers flowing through cities, a large amount of duckweeds, waste water and the like are contained, when the conditions such as sunlight, temperature (water temperature), air and the like are suitable, green algae can be propagated in a large amount to form green clusters, namely duckweeds, the harm of the large-area duckweeds is very serious, the duckweeds not only shield sunlight to enable water bodies to be turbid, but also enable a large amount of organic matters to generate chemical reaction, so that toxic bacteria are increased, oxygen is reduced, fishes and shrimps cannot survive, and the ecological environment of the river channel is seriously damaged. The excess duckweed must first be removed to improve water quality. The manual fishing is also the most common, but the manual fishing has the following problems: (1) the labor intensity is high, and the fishing efficiency is low; (2) in some river surfaces with high water flow speed or complex water flow conditions, manual fishing is very dangerous. There is also a method of filtering duckweeds with a fixed net in a narrow river or dam, which has the greatest disadvantages that filtered duckweeds stay on the net and pile up to block the river, the screen is periodically cleaned, and the cleaning process is complicated and cannot ensure continuous operation.

Disclosure of Invention

In order to solve the above problems, the present invention provides the following solutions:

a waterwheel type river course duckweed cleaning device 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 a blade and a hollow shaft, wherein the blade comprises a screen, a scraping plate and a slide rail, the screen is divided into an upper screen and a lower screen, the left side and the right side of the upper screen and the right side of the lower screen are fixed by the slide rail, a space is arranged between the upper screen and the lower screen to serve as a screen cavity, and the scraping plate is arranged in the screen cavity and can slide in the screen cavity along the slide rail; the two ends of the hollow shaft are through, the side wall of the hollow shaft is provided with a feed inlet, the opening of the feed inlet is upward, 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.

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

Further, the scraping plate can slide in the cavity of the screen under the action of self gravity.

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

Further, the rotation direction of the waterwheel filtering 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.

Furthermore, the material pushing rod is a spiral material pushing rod, threads are arranged on the side wall of the spiral material pushing rod, and the material is driven to move along the threads when the material pushing rod rotates. Further, the screen is a rigid screen.

The device can be arranged in parallel in a plurality of transverse directions, the width of the device on the river surface is not more than 20 meters, and the depth of the device is not required. The device is mainly used for separating duckweed on the surface of river water, so the device is generally installed on the water surface, the hollow shaft is required to be higher than the water surface, and the waterwheel tank is immersed below the water surface as much as possible. In consideration of hydrodynamics, the more violent the disturbance caused by the device is at the place where the river flow speed is higher, so that the faster the river flow speed is at the time of installation, the greater the distance from the water surface of the hollow shaft.

The waterwheel groove is arranged in a river channel, when surface river enters from a water inlet, the movement direction of the waterwheel blades is opposite to the flow direction of the river, the waterwheel blades and the river perform relative movement, and when solid-liquid mixed liquid on the water surface and near the water surface flows into the waterwheel groove, the mixed liquid is contacted with the screen. River water and substances with diameters smaller than the aperture of the screen mesh flow to the downstream through the screen mesh holes, duckweeds with volumes larger than the aperture of the upper screen mesh are left on the surface of the upper screen mesh, duckweeds with volumes smaller than the aperture of the upper screen mesh are left in the cavity, and duckweeds with diameters larger than the aperture of the lower screen mesh are left in the cavity. When the blades slowly rotate upwards, the blades rotate to a certain distance away from the water surface when the screen mesh leaves the water surface and is higher than the horizontal plane where the axis of the hollow shaft is located, duckweed or solids on the blades are large in size and mass and can enter the hollow shaft under the action of gravity, the scraping plates in the cavity of the screen mesh slide downwards under the action of gravity or automatic control, materials in the cavity of the screen mesh are scraped downwards, the materials are scraped into the hollow shaft to be collected, when the blades continue to rotate, the scraping plates return to the edges of the blades, and the next filtering operation is continued. A plurality of waterwheel blades perform these operations in sequence. When the duckweeds enter the hollow shaft, the duckweeds are ejected out of the hollow shaft by the thrust of the threads when the spiral material returning rod rotates, and the concentrated collection or treatment is carried out.

In the treatment process, the waterwheel rotates slowly, an intermittent filtering gap can appear (namely when two adjacent blades are not contacted with the bottom surface of the waterwheel groove at the lowest part, a filtering blind area can appear at the end part and the bottom of the blade), and aiming at the condition, 2-3 waterwheel filtering devices can be added into the same waterwheel groove, and meanwhile, the aperture of the screen mesh arranged in the river flowing direction can be sequentially reduced by 20-50 percent, so that the filtering gap can be overcome, and meanwhile, the stage filtration can be realized, and the single-stage pressure is reduced. The waterwheel blade can not rotate at an excessive speed, the centrifugal force of duckweed filtered at the excessive speed is too large, the duckweed is not easy to be collected into the hollow shaft, the flowing state of river water can be influenced at the excessive speed, and the disturbance increase reduces the separation efficiency of the duckweed.

The invention has the beneficial effects that:

(1) simple structure, convenient operation, and convenient detection and maintenance

(2) The separation efficiency is high, the duckweed in river water flowing down from the upstream can be filtered by installing the equipment at the upstream, and the device is particularly suitable for places with wide river surface or large water flow velocity

(3) Can be continuously operated, has certain automation, does not need excessive manpower and material resources, theoretically does not need to clean the screen, and does not have the solid accumulated on the surface of the screen

(4) Energy saving and cost saving. The rotating speed is low, the energy consumption is less, and compared with the manual salvage, the cost and the danger coefficient are low.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the filter device of the waterwheel;

FIG. 3 is a schematic view of a hollow shaft structure;

fig. 4 is a schematic view of a screw pusher bar.

In the figure: 1. a waterwheel trough; 2. a hollow shaft; 3. a blade; 4. a scraping plate; 5. a screw pusher bar; 6. a water inlet; 7. a water outlet; 81. feeding a screen mesh; 82. a lower screen mesh; 9. a slide rail; 10. a blade discharge port; 11. and (4) feeding a material inlet.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings:

example 1: as shown in fig. 1 to 4, a waterwheel type river duckweed cleaning device comprises a waterwheel tank 1 and a waterwheel filtering device installed inside the waterwheel tank 1; the two ends of the waterwheel groove 1 are respectively provided with a water inlet 6 and a water outlet 7; the waterwheel filtering device comprises a blade 3 and a hollow shaft 2, wherein the blade 3 comprises a screen, a scraping plate 4 and a slide rail 9, the screen is divided into an upper screen 81 and a lower screen 82, the left side and the right side of the upper screen 81 and the right side of the lower screen 82 are fixed by the slide rail 9, a space is arranged between the upper screen 81 and the lower screen 82 and serves as a screen cavity, the scraping plate 4 is arranged in the screen cavity, and the scraping plate 4 can slide in the screen cavity under the action of self gravity; the two ends of the hollow shaft 2 are through, the side wall of the hollow shaft is provided with a feed inlet 11, the opening direction of the feed inlet 11 is upward, the hollow shaft 2 is internally provided with a spiral pushing rod 5, the side wall of the spiral pushing rod 5 is provided with threads, and the spiral pushing rod drives materials to move along the threads when rotating; the blade 3 is combined with the hollow shaft through a bearing, and a blade discharge hole 10 communicated with the cavity of the screen is formed in the connecting position of the bearing and the blade 3; the two ends of the hollow shaft 2 are fixed on the side wall of the waterwheel groove 1, the blades 3 are arranged in the waterwheel groove 1 in a direction perpendicular to the water flow direction, the rotation direction of the waterwheel filtering device is opposite to the water flow direction, the hollow shaft 2 is higher than the water surface, the aperture of the screen 8 is 1-100mm, and the aperture of the upper screen 81 in each blade 3 is larger than that of the lower screen 82. Upper screen 81 the lower screen 82 is a rigid screen.

The device can be arranged in a plurality of transverse parallel or longitudinal sequence, the width of the river surface is not more than 20 m, and the depth is not required. The device is mainly used for separating duckweed on the surface of river water, so the device is generally installed on the water surface, the hollow shaft 2 needs to be higher than the water surface, and the waterwheel tank 1 is immersed below the water surface as much as possible. In consideration of fluid mechanics, the more violent the disturbance caused by the device is at the place where the river flow velocity is higher, so that the faster the river flow velocity is at the time of installation, the greater the distance of the hollow shaft 2 from the water surface.

The waterwheel groove 1 is arranged in a river channel, when surface river enters from a water inlet, the movement direction of the blade 3 is opposite to the flow direction of the river, the blade and the river perform relative movement, and when solid-liquid mixed liquid on the water surface and near the water surface flows into the waterwheel groove 1, the mixed liquid is contacted with the upper screen mesh 81 and the lower screen mesh 82. River water and materials with the diameter smaller than the aperture of the screen 8 flow to the downstream through the screen holes, duckweed and other solids with the diameter larger than the aperture of the screen 8 are intercepted by the screen 8 and attached to the screen 8 under the action of water flow, duckweed with the volume larger than the aperture of the upper screen 81 is left on the surface of the upper screen 81, duckweed with the volume smaller than the aperture of the upper screen 81 is left in the cavity of the screen, and duckweed with the diameter larger than the aperture of the lower screen 82 is left in the cavity of the screen. When blade 3 slowly upwards rotates, the solid on blade 3 is because volume and quality are all great, can enter into hollow shaft 2 under the action of gravity, and scraping plate 4 in the screen cloth cavity relies on gravity or automatic control effect to slide down, scrapes the material in the screen cloth cavity down, scrapes to hollow shaft 2 in and collects, continues to rotate as blade 3, scrapes plate 4 and gets back to blade 3 edge, continues the filtration operation next time. A plurality of waterwheel filtration devices perform these operations sequentially.

In the treatment process, the waterwheel rotates slowly, an intermittent filtering gap can appear (namely when two adjacent blades 3 are not contacted with the bottom surface of the waterwheel groove 1 at the lowest part, a filtering blind area can appear at the end part and the groove bottom of the blade 3), aiming at the condition, 2-3 waterwheel filtering devices can be added into the same waterwheel groove 1, and meanwhile, the aperture of a screen mesh arranged in the flowing direction of river water can be sequentially reduced by 20-50 percent, so that the filtering gap can be overcome, and meanwhile, the stage filtration can be realized, and the single-stage pressure is reduced. The rotation speed of the waterwheel blades 3 cannot be too fast, the centrifugal force of duckweed filtered at the too fast rotation speed is too large, and the duckweed is not easy to be collected into the hollow shaft 2, the flowing state of river water can be influenced at the too fast rotation speed, and the disturbance increase reduces the separation efficiency of the duckweed.

The utility model discloses with waterwheel, screen cloth separation principle advantage combine together and rationally reform transform, it is high to have a separation efficiency, simple structure, convenient operation, the operation is stable, and the energy saving can realize advantages such as automated control simultaneously. Has good treatment effect on river water with high density of the duckweed on the water surface. Meanwhile, the device can be used for cleaning other solid wastes on river surfaces.

Claims

1. A waterwheel type river course duckweed cleaning device 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 a blade and a hollow shaft, wherein the blade comprises a screen, a scraping plate and a slide rail, the screen is divided into an upper screen and a lower screen, the left side and the right side of the upper screen and the right side of the lower screen are fixed by the slide rail, a space is arranged between the upper screen and the lower screen to serve as a screen cavity, and the scraping plate is arranged in the screen cavity and can slide in the screen cavity along the slide rail; the two ends of the hollow shaft are through, the side wall of the hollow shaft is provided with a feed inlet, the opening of the feed inlet 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.

2. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: the aperture of the upper screen in the blade is larger than that of the lower screen.

3. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: the scraping plate can slide in the cavity of the screen under the action of self gravity.

4. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 2, wherein: the aperture of the screen mesh is 1-100 mm.

5. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: the rotation direction of the waterwheel filtering device is opposite to the water flow direction.

6. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: after the equipment is installed, the hollow shaft is higher than the water surface.

7. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: the material pushing rod is a spiral material pushing rod, the side wall of the spiral material pushing rod is provided with threads, and the material is driven to move along the threads when the material pushing rod rotates.

8. The waterwheel type river course duckweed cleaning apparatus as claimed in claim 1, wherein: the screen is a rigid screen.