JPH0423373Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] Today, not only is the deterioration of water quality in lakes, rivers, etc. due to phosphorus, nitrogen, BOD, COD, etc. becoming a major social problem, but also Due to the deterioration of water quality, aquatic plants such as water hyacinth and canada lily can grow abnormally, which obstructs water transportation.
This has led to problems such as aquatic plants dying and rotting, creating a foul odor.

In addition, by utilizing the action of the aquatic plants to absorb nutrients dissolved in water during photosynthesis,
Removes phosphorus and nitrogen and improves water quality, i.e.
Means for purifying water have been proposed. In this case, in order to efficiently improve water quality through the nutrient absorption effect of aquatic plants, the cultivation density of aquatic plants can be reduced by removing or thinning the aquatic plants as appropriate as the aquatic plants proliferate. It is necessary to carry out cultivation management to maintain a constant level.

The present invention is an aquatic plant collection device that is used to collect abnormally propagated aquatic plants, or to thin out aquatic plants for cultivation management when improving water quality by cultivating aquatic plants. The floating body is provided with a scooping device for scooping up aquatic plants, a collecting section for collecting the aquatic plants, and a conveyor for conveying the aquatic plants scooped up by the scooping device to the collecting section.

[Prior art]

In conventional aquatic plant recovery devices, a floating body is equipped with a conveyor that scoops up aquatic plants and conveys them to the recovery section of the floating body or another floating body (for example,
51-74890).

[Problem that the invention attempts to solve]

However, when using the above-mentioned conventional technology, since the scooped up aquatic plants are collected in the collecting section in their original size, the apparent specific gravity of the aquatic plants is small and the aquatic plants become bulky. The amount of plants collected is small compared to the size of the collection section, and each time the collection section is full of aquatic plants, it is necessary to replace the collection section and take out the collected aquatic plants from the collection section many times. However, the efficiency of the collection operation was poor because the recovery operation was interrupted for a long time due to the above-mentioned exchange and removal.

An object of the present invention is to provide an aquatic plant collection device that can efficiently collect aquatic plants.

[Means for solving problems]

The characteristic configuration of the aquatic plant collection device according to the present invention is as follows:
A shredding device for shredding the aquatic plants is provided between the scooping device and the conveyor, and its effects are as follows.

[Effect]

Since the structure is configured to collect aquatic plants by shredding them, the apparent specific gravity of the collected aquatic plants can be increased and the amount of aquatic plants collected in the collecting section can be increased. By reducing the number of times the collection unit must be replaced and the collected aquatic plants taken out from the collection unit each time the collection unit is fully collected, the time during which collection work is interrupted due to such replacement or removal can be shortened. can. Moreover, since shredding is used as a means to increase the apparent specific gravity of the aquatic plants, cell destruction of the aquatic plants is reduced compared to, for example, compressing the aquatic plants to increase the apparent specific gravity. Cell destruction reduces the amount of sap containing highly concentrated nutrient salts that comes out of aquatic plants, thereby reducing water contamination by the sap.

Furthermore, aquatic plants can be shredded at any time from before being scooped up to just before they are collected by the collection unit. In addition, if a shredding device is installed between the conveyor and the collecting section, the objects to be transported by the conveyor will remain large aquatic plants, and the aquatic plants will be damaged during transport. In order to avoid problems such as getting caught on other objects, a large conveyor is required that can transport large aquatic plants without protruding. In contrast, in the present invention, since a shredding device is provided between the scooping device and the conveyor, large unshredded aquatic plants can be scooped up, while shredded aquatic plants can be scooped up. It can be transported by conveyor to the collection section, and although it shreds aquatic plants, it maintains the desired scooping performance well.
Moreover, the conveyor can be made smaller.

[Effect of idea]

Therefore, according to the present invention, it is possible to reduce water contamination and improve work efficiency while maintaining good scooping performance, and at the same time, it is possible to downsize the conveyor.

〔Example〕

As shown in FIGS. 1 and 2, as the hull 1 is propelled, a hull 1
A device 2 for raking aquatic plants toward the left and right center with a width wider than the lateral width of the hull 1, and a device 3 for scooping up the aquatic plants that have been raked up by the device 2 are installed at the rear of the hull 1. net 4
A collection barge 4, which is another example of a collection section, may be installed as shown in Figure 7, so that it can be replaced when it is full of aquatic plants. and the scooping device 3
The aquatic plants scooped up by the collecting net 4
Alternatively, a conveyor 5 for transferring to the collection barge 4 is provided,
Configure an aquatic plant collection device.

The raking device 2 includes a pair of left and right frames 6, 6 that protrude forward from the front of the hull 1 and are connected to each other so as to be able to swing left and right around the vertical axes Y and Y.
Each of them supports a raking belt 8, 8 with a raking claw 7 that rakes up aquatic plants by driving and rotating, and as a result, the raking width L, that is, the raking width L by the swinging of the frames 6, 6. , 6, so that the distance between the front ends can be freely adjusted. Reference numerals 9, 9 are rods for fixing the frames 6, 6 in any swinging posture.

The scooping device 3 is freely driven and rotatable around a horizontal axis X perpendicular to the hull propulsion direction, and by driving and rotating, it is attached to its circumferential surface at required intervals in both the axial direction and the circumferential direction. A plurality of scooping blades 10... A scooping drum 11 is provided which scoops up aquatic plants in groups and transports them rearward, and only the scooping blades 10... are passed through the rear of this drum 11. Separating blades 12 are arranged in parallel to separate and remove aquatic plants from the blades 10 and supply them falling onto the starting end of the conveyor 5, thereby rotating the drum 11 while the hull 1 is being propelled. It is configured to continuously scoop up aquatic plants. 13 is a motor that drives the drum 11, and 14 is a motor that moves the drum 11 up and down via a chain 15 so as to change the scooping position of the drum 11 up and down.

Therefore, a device 16 for shredding aquatic plants is provided between the scooping device 3 and the conveyor 5, specifically, in the falling supply path from the separating blade 12... group to the conveyor 5. The plant is constructed to increase the apparent specific gravity of the plant.

As shown in FIGS. 3 and 4, the shredding device 16 includes a first rotating shaft 19, which is driven by a motor 18, and a first rotating shaft 19, which is driven in the opposite direction by a motor 20, in a case 17. A cylindrical second rotating shaft 21 is provided concentrically, and cutting blades 22, 23, . . . are attached to both rotating shafts 19, 21, respectively.

[Another Embodiment] As shown in FIGS. 5 and 6, the scooping device 3 includes a horizontal arm 2 that can be rotated around the vertical axis Z via a handle 24.
5, a trolley 2 equipped with a frame 27 that is driven up and down by a motor 26 via a rack and pinion;
8 is mounted so that it can be driven and moved freely in the longitudinal direction of the arm,
A scooping bucket 30 that is opened and closed via a hydraulic cylinder 29 is attached to the lifting frame 27, and the aquatic plants in the water are grabbed by the bucket 30, and the bucket 30 is raised and rotated to be positioned on the conveyor 5. By opening in the state,
The gripped aquatic plants are configured to fall and be supplied onto a conveyor 5.

The floating body 1 is constructed into a raft shape.

[Brief explanation of the drawing]

Figures 1 to 4 show examples, Figure 1 is a partially cutaway side view, Figure 2 is a plan view, Figure 3 is an enlarged plan view of the main part, and Figure 4 is the same as in Figure 3. - line sectional view. 5 to 7 show another embodiment, in which FIG. 5 is a side view of the main part, FIG. 6 is a plan view of the main part, and FIG. 7 is a side view of the collecting section. 1... Floating body, 3... Scooping device, 4... Collection section, 5... Conveyor, 16... Shredding device.

Claims (1)

[Scope of utility model registration request] The floating body 1 is provided with a scooping device 3 for scooping up aquatic plants, a collecting section 4 for collecting the aquatic plants, and a conveyor 5 for conveying the aquatic plants scooped up by the scooping device 3 to the collecting section 4. An aquatic plant collection device provided with
This aquatic plant recovery device is provided with a shredding device 16 for shredding the aquatic plants between the scooping device 3 and the conveyor 5.