Algae fishing device for water body sample collection

Abstract

The utility model discloses an algae catching device for water body sample collection, which comprises a collecting box, the collecting box is provided with a sewer pipe, the upper end of the sewer pipe is obliquely and fixedly connected with a water guide cylinder, a water guide shaft is rotatably arranged in the water guide cylinder, and the surface of the water guide shaft is fixedly connected with a spiral sheet; a sieve pore plate is fixedly and integrally arranged on the surface of the water guide cylinder; as the spiral spacing is gradually reduced, the conveying formation of algae between adjacent spiral sheets can be shortened, so that the extrusion frequency of the algae in the volume is increased, the shearing stress on the algae is obviously increased, and along with continuous rotation, after the algae is pushed to a certain pressure, the algae cannot be directionally conveyed, but slip friction occurs between the spiral sheets; when the water diversion barrel is conveyed, the water can roll along with the spiral pieces and is not conveyed directionally, so that the algae conveyed to the top of the water diversion barrel are squeezed out gradually through the intervals of the spiral pieces.

Description

Technical Field

[0001] This utility model relates to the field of water sample collection technology, specifically an algae harvesting device for water sample collection. Background Technology

[0002] In water quality monitoring, water sampling equipment is often used to collect water samples into sampling bottles inside the equipment for further laboratory analysis. This allows for the examination of the water quality under specific environmental conditions and whether the water quality has deteriorated or improved due to environmental influences. Water samples need to be collected from different water bodies. Due to differences in ecological environment, some water bodies have a high content of algae, which can affect water quality collection. Therefore, when collecting water samples, it is also necessary to harvest and collect the algae in the water body. The analysis of algae can also help in the detection of water quality.

[0003] A novel algae harvesting device for aquaculture, disclosed in publication number CN213992145U, includes a harvesting chamber and a collection chamber. The harvesting chamber has chutes at the midpoint of both ends, with sliding blocks fitted inside the chutes to cooperate with them. A filter screen is located at the midpoint of the top of the harvesting chamber. Scrapers that cooperate with the filter screen are located on one side of each of the sliding blocks, and pull rods extending to the outside of the harvesting chamber are located at the top of the scrapers. This invention utilizes the cooperation of impeller A, a driving gear, a motor, bevel gear A, bevel gear B, a driven gear, and impeller B. During operation, impeller A and the driving gear stir the water flow inwards, drawing algae along with the water flow into the device. The algae are then filtered through the filter screen and fall into the collection chamber, thus capturing the algae and eliminating the need for manual harvesting with a net.

[0004] In current water management practices, algae harvesting mainly relies on traditional manual methods, such as using nets. While simple and easy to implement, this method is relatively slow, resulting in less than ideal overall harvesting efficiency. In addition, there are automated harvesting methods. These methods use specialized equipment to suck up algae along with the water, then separate and retain the algae through a filtration system. However, algae are highly absorbent, making it difficult for the filtration system to drain the water from the algae as it continues to be sucked into the equipment. Consequently, the weight of the collected algae increases over time, increasing the difficulty of subsequent processing. Furthermore, when removing the filter bag, water droplets drip from it, causing inconvenience and additional cleaning work for staff.

[0005] Therefore, those skilled in the art have provided an algae harvesting device for collecting water samples to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to provide an algae harvesting device for water sample collection, so as to solve the problem mentioned in the background art that the existing algae harvesting devices for water sample collection are not conducive to solid-liquid separation of algae.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An algae harvesting device for water sample collection includes: a collection box, a drain pipe installed in the collection box, a water inlet tube fixedly connected to the upper end of the drain pipe at an incline, a water inlet shaft rotatably installed inside the water inlet tube, a spiral blade fixedly connected to the surface of the water inlet shaft, a perforated plate integrally fixedly provided on the surface of the water inlet tube, a top plate fixedly installed on the top of the water inlet tube, a sleeve opening provided on the inner wall of the lower end of the drain pipe, a retaining ring fitted inside the sleeve opening, and a net bag integrally connected to the surface of the retaining ring.

[0009] As a further improvement of this utility model: the water-guiding shaft and the interior of the water-guiding cylinder form a rotating structure, and the spacing between the spiral blades gradually decreases from bottom to top along the surface of the water-guiding shaft.

[0010] As a further improvement of this utility model: a connecting flange is installed between the drain pipe and the collection box, and the connecting flange is fixedly connected to the outer wall of the drain pipe.

[0011] As a further embodiment of this utility model: the drain pipe is connected to the top of the collection box via a connecting flange, and the water inlet tube is connected to the interior of the collection box via the drain pipe.

[0012] As a further improvement of this utility model: the bottom of the collection box is rotatably equipped with a braked roller, and the front wall of the collection box is rotatably equipped with an inspection door, and a drain pipe is installed below the inspection door.

[0013] As a further improvement of this utility model: the surface of the top plate is provided with water injection holes, and a water guide plate is fixedly installed below the top plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] A water-drawing cylinder is installed at an angle above the collection tank. Inside the cylinder, a rotating water-drawing shaft is mounted. The surface of the shaft is decorated with spiral blades, the spacing of which gradually decreases from bottom to top. As the spacing decreases, the transport of algae between adjacent spiral blades is shortened, leading to an increase in the number of times the algae are compressed within the volume. This significantly increases the shear stress on the algae. With continuous rotation, when the algae reach a certain pressure, they cease directional transport and instead slip and rub against the spiral blades, rolling along with them. The algae transported to the top of the water-drawing cylinder are gradually forced to squeeze out water through the spacing of the spiral blades. The perforated plate and drain pipe directly squeeze out the water beforehand. After the algae accumulate at the top of the water inlet tube, the pressure between the algae and the spiral spacing reaches a critical point. At this point, the algae will no longer be pushed. Instead, they will roll with the spiral plate. The drain pipe is connected below, which reduces the rotation speed of the water inlet shaft. As the water inlet shaft rotates at a reduced speed, the algae between the spiral spacing will fall into the drain pipe under the influence of gravity and be collected by the net inside the drain pipe. This allows for solid-liquid filtration and separation of the algae again. At the same time, the net collects the algae. Because the water was squeezed out of the algae beforehand, the water content in the algae is low and the weight is lighter, allowing the net to successfully retain the algae sample. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an algae harvesting device for collecting water samples.

[0017] Figure 2 This is a second-view structural diagram of an algae harvesting device for water sample collection.

[0018] Figure 3 This is a schematic diagram of the drain pipe in an algae harvesting device for water sample collection.

[0019] Figure 4 This is a cross-sectional schematic diagram of the drain pipe in an algae harvesting device for water sample collection.

[0020] In the diagram: 1. Collection box; 2. Braked roller; 3. Water inlet cylinder; 4. Top plate; 5. Water guide plate; 6. Screen plate; 7. Water inlet shaft; 8. Water jet hole; 9. Drain pipe; 10. Spiral blade; 11. Drain pipe; 12. Connecting flange; 13. Mesh bag; 14. Snap ring; 15. Sleeve; 16. Inspection door. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides an algae harvesting device for water sample collection, comprising: a collection box 1, a drain pipe 11 installed in the collection box 1, and a water inlet tube 3 fixedly connected to the upper end of the drain pipe 11 at an incline; a water inlet shaft 7 rotatably installed inside the water inlet tube 3, and a spiral blade 10 fixedly connected to the surface of the water inlet shaft 7; a braked roller 2 rotatably installed at the bottom of the collection box 1; an inspection door 16 rotatably installed on the front wall of the collection box 1; a drain pipe 9 installed below the inspection door 16; water jet holes 8 provided on the surface of the top plate 4; and a water guide plate 5 fixedly installed below the top plate 4. The top plate 4 seals the top of the water inlet tube 3. As the spiral blades 10 continuously push the algae, some water will be filtered out through the sieve plate 6, some will be discharged through the drain tube, and some will be ejected from the jet hole 8 due to the continuous pushing of the spiral blades 10. The ejected water will be guided out through the guide plate 5. In addition, the water falling into the collection box 1 will be discharged through the drain pipe 9. The bottom of the collection box 1 is inclined towards the drain pipe 9, which facilitates the drainage of water through the drain pipe 9. In this way, the discharged water will flow back into the water from the shore, thus preserving the algae sample.

[0023] The water-drawing shaft 7 and the interior of the water-drawing cylinder 3 form a rotating structure, and the spacing of the spiral blades 10 gradually decreases from bottom to top along the surface of the water-drawing shaft 7;

[0024] The water-drawing shaft 7 and the water-drawing cylinder 3 have rotating internal structures. A variable frequency motor is installed at the top of the water-drawing shaft 7 to drive its rotation. This variable frequency motor also allows for speed regulation of the water-drawing shaft 7. The spiral blades 10 are spirally distributed along the water-drawing shaft 7. The driving force generated by the rotation of the spiral blades 10 draws water into the water-drawing cylinder 3, along with algae. As the spacing of the spiral blades 10 gradually decreases, the algae in the water are subjected to increased compression. The water is then filtered out through the perforated plate 6, leaving the algae. As the spiral blades 10 rotate, the algae gradually move towards the upper part of the water-drawing cylinder 3. As the algae move, the unit volume of algae between the spiral plates 10 increases, and the pushing force on the algae also increases. As there is more algae, the spacing between the spiral plates 10 becomes smaller, and the pushing force gradually reaches a critical point. When the pushing force in the spacing reaches the critical point, slippage and friction occur between the algae and the spiral plates 10. The axial thrust is less than the sliding friction between the algae and the wall of the water inlet cylinder 3. As a result, the algae will not continue to be transported in a directional manner. Then, the water inlet shaft 7 is decelerated. After the water inlet shaft 7 is decelerated, the spacing between the spiral plates 10 and the drain pipe 11 remain connected. Under the weight of the accumulated algae, the algae will fall into the drain pipe 11.

[0025] The surface of the water inlet tube 3 is integrally provided with a perforated plate 6, and the top plate 4 is fixedly installed on the top of the water inlet tube 3. The lower end of the drain pipe 11 has a sleeve 15 on its inner wall, and a retaining ring 14 is fitted inside the sleeve 15. A mesh bag 13 is integrally connected to the surface of the retaining ring 14. A connecting flange 12 is installed between the drain pipe 11 and the collection box 1, and the connecting flange 12 is fixedly connected to the outer wall of the drain pipe 11. The drain pipe 11 is connected to the top of the collection box 1 through the connecting flange 12. The water inlet tube 3 is interconnected with the interior of the collection box 1 through the drain pipe 11. The drain pipe 11 is fixed to the top of the collection box 1 via a connecting flange 12, and a water inlet tube 3 is fixedly connected to the upper end of the drain pipe 11. Therefore, the drain pipe 11 supports the water inlet tube 3 while maintaining communication between the water inlet tube 3 and the inside of the collection box 1. A mesh bag 13 is connected to the lower end of the drain pipe 11 via a sleeve 15. A retaining ring 14 is provided along the upper edge of the mesh bag 13, which engages with the sleeve 15, thus securing the mesh bag 13 to the drain pipe 11. At the lower end, the net bag 13 has a filtering function. When the spiral blade 10 pushes and squeezes water out of the algae, the water will directly pass through the net bag 13 and enter the interior of the collection box 1. When the axial thrust of the spiral blade 10 is less than the sliding friction between the algae and the wall of the water inlet cylinder 3, the algae will fall into the net bag 13 at the lower end of the drain pipe 11 under the action of gravity. The net bag 13 is used to collect the algae. Finally, the net bag 13 is taken out through the inspection door 16 set on the front wall of the collection box 1.

[0026] The working principle of this utility model is as follows:

[0027] When using this invention, the variable frequency motor is started, driving the water-drawing shaft 7 to rotate. The water-drawing shaft 7 drives the spiral blades 10 to rotate, generating an axial thrust on the water, drawing the water into the water-drawing cylinder 3. After being drawn into the water-drawing cylinder 3, the water is filtered out through the perforated plate 6, leaving algae. As the spiral blades 10 rotate, the algae gradually move towards the upper end of the water-drawing cylinder 3. As the unit volume of algae between the spiral blades 10 increases, the pushing force on the algae also increases. Furthermore, as there is more algae, the spacing between the spiral blades 10 decreases. The pushing force gradually reaches the critical point. When the pushing force in the gap reaches the critical point, the algae and the spiral blades 10 slip and rub against each other. The axial thrust is less than the sliding friction between the algae and the wall of the water inlet tube 3. At this time, the water inlet shaft 7 is decelerated. After the water inlet shaft 7 is decelerated, the gap between the spiral blades 10 and the drain pipe 11 remain connected. Under the weight of the accumulated algae, the algae will fall into the drain pipe 11 and into the net bag 13. Finally, the net bag 13 is taken out through the inspection door 16 set on the front wall of the collection box 1, and the collection of algae samples is completed.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An algae harvesting device for collecting water samples, characterized in that, include: A collection box (1) is provided with a drain pipe (11), and a water inlet tube (3) is fixedly connected to the upper end of the drain pipe (11) at an incline. A water inlet shaft (7) is rotatably installed inside the water inlet tube (3), and a spiral blade (10) is fixedly connected to the surface of the water inlet shaft (7). A screen plate (6) is integrally fixed on the surface of the water inlet tube (3). A top plate (4) is fixedly installed on the top of the water inlet tube (3). A sleeve opening (15) is opened on the inner wall of the lower end of the drain pipe (11), and a retaining ring (14) is fitted inside the sleeve opening (15). A mesh bag (13) is integrally connected to the surface of the retaining ring (14).

2. The algae harvesting device for water sample collection according to claim 1, characterized in that, The water-drawing shaft (7) and the interior of the water-drawing cylinder (3) form a rotating structure, and the spacing between the spiral blades (10) gradually decreases from bottom to top along the surface of the water-drawing shaft (7).

3. The algae harvesting device for water sample collection according to claim 1, characterized in that, A connecting flange (12) is installed between the drain pipe (11) and the collection box (1), and the connecting flange (12) is fixedly connected to the outer wall of the drain pipe (11).

4. The algae harvesting device for water sample collection according to claim 1, characterized in that, The drain pipe (11) is connected to the top of the collection box (1) via a connecting flange (12), and the water inlet tube (3) is connected to the interior of the collection box (1) via the drain pipe (11).

5. The algae harvesting device for water sample collection according to claim 1, characterized in that, The bottom of the collection box (1) is rotatably equipped with a braked roller (2), and the front wall of the collection box (1) is rotatably equipped with an inspection door (16), and a drain pipe (9) is installed below the inspection door (16).

6. The algae harvesting device for water sample collection according to claim 1, characterized in that, The surface of the top plate (4) is provided with water injection holes (8), and a water guide plate (5) is fixedly installed below the top plate (4).

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