Self-feeding conveying equipment

Abstract

Self-feeding conveying equipment relates to the field of water surface cleaning of water conservancy projects, is arranged on a ship body structure and comprises a supporting framework fixedly arranged on the ship body structure. The roller assembly is arranged on the supporting framework; the duckweed net belt is arranged on the roller assembly in a sleeving manner; wherein the duckweed net belt is of a hollow net structure, and the duckweed net belt is arranged on the roller assembly in a sleeving mode to form a closed-loop transmission belt actuated by the roller assembly; the duckweed net belt is used for salvaging duckweed in the sailing process; at least part of the duckweed net belt is located under the water surface, and at least part of the duckweed net belt located on the water surface forms a duckweed taking face used for facing the water surface and guiding duckweed on the water surface to be transferred to the duckweed net belt; the net-shaped structure can quickly drain water carried by the duckweed when the duckweed is fished up, and the weight of the duckweed is reduced.

Description

Technical Field

[0001] The invention relates to the field of water surface cleaning of hydraulic engineering, and in particular to a self-loading conveying device. Background Art

[0002] As one of the five largest freshwater lakes in my country, Taihu Lake is famous for its clear water and fat fish. Since the mid-20th century, the water of Taihu Lake has been increasingly polluted, especially the pollution of nitrogen and phosphorus substances. Taihu Lake and its tributaries are in a state of eutrophication all year round, and the water environment quality has been declining. Under eutrophication, aquatic organisms such as cyanobacteria and duckweed have become environmental polluters. Duckweed itself does not pollute the water quality, but excessive duckweed growth will have a certain impact on the water environment. Duckweed grows mainly on light and nutrients, but also requires oxygen in the water. Once the dissolved oxygen in the water decreases, fish will no longer have oxygen to survive, and a large number of them will die. The death and decay of duckweed itself will also consume the dissolved oxygen in the water and further deepen eutrophication and water quality deterioration, a vicious cycle. Therefore, during the duckweed outbreak period, counties and cities near Taihu Lake will use corresponding treatment equipment to salvage duckweed in the water.

[0003] In the prior art, a Chinese invention patent with patent number 202110709143.X discloses a water environment repair device, including a hull, and the water environment repair device also includes: a conveying mechanism for conveying duckweed, on which a duckweed salvaging piece for salvaging duckweed is installed; a dewatering mechanism for dewatering the salvaged duckweed, the dewatering mechanism including a dewatering tank, a duckweed vibration conveying assembly installed in the dewatering tank, and a pressure wheel assembly for squeezing water out of the duckweed and preventing duckweed from being blocked, the dewatering tank is installed on the hull; and an impact assembly for impacting the duckweed salvaging piece so that the duckweed stuck on the duckweed salvaging piece automatically falls off, the impact assembly is installed on the hull. The main salvaging method of this invention is to arrange multiple duckweed shovels with water-permeable holes on the conveyor belt at intervals to pick up the duckweed in the water, so as to filter out the duckweed in the water body for subsequent processing.

[0004] In the prior art, the duckweed is usually salvaged by setting filters or duckweed shovels at intervals on the conveyor belt. This setting method not only increases the volume of the entire conveyor belt, but also causes a certain idle period in the salvage process due to the interval setting method, and the duckweed cannot be collected and salvaged efficiently. After an area is cleaned, relatively more duckweed remains. Summary of the invention

[0005] The technical problem to be solved by the present invention is how to ensure continuous and uninterrupted salvaging of duckweed during the duckweed salvaging process, thereby ensuring the salvaging density and improving the salvaging efficiency.

[0006] To achieve the above-mentioned purpose, according to one aspect of the invention, there is provided a self-loading conveying device, which is arranged on a hull structure, and includes a supporting structure fixedly arranged on the hull structure; a roller assembly arranged on the supporting structure; a duckweed mesh belt mounted on the roller assembly; wherein the duckweed mesh belt is a hollow mesh structure, and the duckweed mesh belt is mounted on the roller assembly to form a closed-loop transmission belt actuated by the roller assembly; the duckweed mesh belt is used to salvage duckweed during navigation, and is at least partially located under the water surface, and the duckweed mesh belt located on the water surface is at least partially formed with a duckweed catching surface, and the duckweed catching surface is used to face the water surface and guide the duckweed on the water surface to be transferred to the duckweed mesh belt.

[0007] The roller assembly is composed of at least two rollers, including at least one active roller for providing power for the duckweed mesh belt to run.

[0008] As a preferred embodiment of the above technical solution, the roller assembly includes an active roller, a first guide roller and a second guide roller, the second guide roller is located above the first guide roller, the duckweed picking surface is located between the first guide roller and the second guide roller, and the duckweed mesh belt is located between the second guide roller and the active roller to form a transport surface with a gently sloping surface.

[0009] Here, the collecting surface and the transport surface formed by the first guide roller and the second guide roller are explained. The inclination angle of the collecting surface is smaller than the inclination angle of the transport surface. It can be understood that the collecting surface is steeper than the transport surface, while the transport surface is relatively flat.

[0010] As a preferred embodiment of the above technical solution, a third guide roller is further arranged between the active roller and the first guide roller, and the duckweed mesh belt section between the active roller and the third guide roller forms a dirt unloading surface.

[0011] The unloading surface is obtained by tensioning the duckweed mesh belt again by the third guide roller. In the design of the present invention, when the duckweed mesh belt is located in the upward section, that is, the duckweed collecting surface and the transport surface mentioned above, it is mainly for obtaining duckweed, and when it is located in the downward section, it is mainly for unloading duckweed. In the downward section, at least part of the duckweed mesh belt is facing the water surface or even enters the water. If the duckweed is not dealt with in advance, it will fall into the water again. The third guide roller tensions the downward part of the duckweed mesh belt into the unloading surface. The inclination angle of the unloading surface is larger than that of the original downward surface, which facilitates the duckweed to fall into the collection area that can be opened on the hull structure. That is to say, part of the downward surface can be turned into a duckweed lowering area.

[0012] As a preferred embodiment of the above technical solution, the height of the second guide roller is lower than that of the active roller.

[0013] As a preferred embodiment of the above technical solution, the roller assembly also includes a unloading roller, which is arranged between the active roller and the third guide roller, and the rotating drum surface on the unloading roller is arranged against the dirt unloading surface, the unloading roller is self-rotating, and the surface of the unloading roller is provided with protruding ribs.

[0014] The unloading roller is a self-rotating roller controlled by a motor. Different from the conventional active roller, the unloading roller is provided with protruding ribs extending in the grinding axis direction. Except for the protruding ribs, the outer surface of the unloading roller is arranged tangent to the unloading surface. The unloading roller is not used to tension the duckweed mesh belt nor participate in the energy transfer during the rotation and transportation process of the duckweed mesh belt.

[0015] As a preferred embodiment of the above technical solution, the active roller and the guide roller are provided with directional grooves in the center, and the contact side of the duckweed mesh belt and the roller assembly is provided with directional ribs adapted to the directional grooves.

[0016] As a preferred embodiment of the above technical solution, the rotation direction of the unloading roller is the same as the rotation direction of the active roller; the angular velocity of the unloading roller is 2-3 times the angular velocity of the active roller.

[0017] As a preferred embodiment of the above technical solution, the rotation direction of the unloading roller is opposite to the rotation direction of the active roller.

[0018] As a preferred embodiment of the above technical solution, a sealing structure is provided on the first guide roller.

[0019] As a preferred embodiment of the above technical solution, the duckweed mesh belt body is an elastic mesh structure woven by a combination of artificial silk threads.

[0020] In summary, the present invention has the following advantages: 1. The duckweed mesh belt used in the present invention is a filter and a conveyor belt at the same time. Therefore, the duckweed mesh belt is a continuous and uninterrupted salvaging method during the salvaging process, which can efficiently capture duckweed and improve the salvaging density. Compared with the method of adding filters on the conveyor belt at intervals in the prior art, the present application effectively reduces the volume of the conveyor belt structure, thereby reducing the possibility of collision between the conveyor belt structure and the devices on the salvaging hull, hard objects in the water or other rigid structures. At the same time, the problem that the water on the conveyor belt in the prior art cannot be drained quickly, so that the conveyor belt transports water to the ship while transporting duckweed, and the problem that the conveyor belt will increase the transportation burden on the ship after long-term operation can also be effectively solved under the mesh structure of the present invention. The mesh structure of the present application can quickly drain the water carried by the duckweed when it is picked up, thereby reducing the weight of the duckweed; 2. The first guide roller and the second guide roller structure adopted in the present invention not only provide tension for the duckweed mesh belt, but also appropriately change the surface inclination angle of the conveyor belt to form a duckweed picking surface for picking duckweed on the water surface and a transport surface for transportation. The duckweed picking surface has a relatively steeper slope, which can better break the water and cater to the duckweed on the water surface. For the duckweed picking surface inserted into the water, the larger its inclination angle is, the more duckweeds it contacts per unit time, and the more efficient the duckweed picking is. Of course, the inclination angle of the duckweed picking surface should not be too large. Duckweeds on the duckweed picking surface with too large an inclination angle are more likely to fall back into the water due to gravity. As the downstream of the duckweed picking surface, the main function of the transport surface is to transport the duckweed to a suitable area. Therefore, its transportation process should also be more stable, so its slope setting is more gentle, thereby reducing the probability of duckweed rolling into the water along the slope due to the slope. Furthermore, the present invention adopts a setting mode in which the second guide roller is lower than the active roller, so that the transport surface is tilted downward toward the water surface instead of tilted toward the hull, further preventing the water brought out by the duckweed mesh belt from flowing toward the hull. 3. The unloading surface generated by the third guide roller of the present invention can form an area specifically used for unloading duckweed, and the inclination angle of the unloading surface is larger, making it easier to guide the duckweed to fall; 4. Furthermore, the present invention sets a discharge roller in the corresponding area of ​​the discharge surface to help discharge duckweed in this area. The circumferentially self-rotating discharge roller rotates one circle, and its protruding ribs cause the tensioned discharge surface to produce a certain deformation, thereby causing vibration in the discharge surface area, thereby helping duckweed to fall from the discharge surface. It should be noted that for the tensioned structure, the vibration of the discharge surface has little effect on the surface of other duckweed mesh belts; 5. From a structural point of view, the duckweed mesh belt with a certain elasticity has relatively poor self-supporting performance compared with the traditional belt structure. The present invention adds directional ribs on the inner side of the duckweed mesh belt, which not only enhances the strength of the duckweed mesh belt, but also cooperates with each roller to further strengthen the positioning and prevent the duckweed mesh belt from detaching from the roller assembly.

[0021] Further or other detailed benefits will be discussed in the examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure behind the duckweed web belt; Figure 3 It is a schematic diagram of the cooperation between the roller assembly and the directional ribs of the present invention; Figure 4 This is a schematic diagram of the weaving method of the duckweed mesh belt of the present invention; Figure 5 It is a schematic diagram of the transmission coordination among the active roller, the first guide roller and the second guide roller; Figure 6It is a schematic diagram of the coordinated transmission of the active roller, the first guide roller, the second guide roller and the third guide roller; Figure 7 It is a schematic diagram of the coordination of the active roller, the first guide roller, the second guide roller, the third guide roller and the unloading roller; Figure 8 It is a schematic diagram of the cooperation between the first guide roller, the second guide roller or the third guide roller and the directional rib; Fig. 9 It is a schematic diagram of the sealing structure; Among them, 1-support structure, 2-roller assembly, 3-duckweed mesh belt, 21-active roller, 31-directional ribs, 221-first guide roller, 222-second guide roller, 223-third guide roller, a-duckweed surface, 224-feeding roller, 2241-protruding rib, 2a-directional groove, 2211-skeleton oil seal and 2212-nylon retaining ring. DETAILED DESCRIPTION

[0023] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0024] The present invention will be further explained below in conjunction with embodiments: Example: A self-loading conveying device for collecting and processing duckweed on the water surface of water blooms, please refer to Figure 1 , Figure 2 and Figure 3 , which is arranged on the hull structure, generally a salvage ship for rivers and lakes, the above-mentioned self-loading conveying equipment includes a supporting structure 1, a roller assembly 2 arranged on the supporting structure 1 and a duckweed mesh belt 3 sleeved on the roller assembly 2, the roller assembly 2 includes an active roller 21 and at least one guide roller, the duckweed mesh belt 3 is a hollow mesh structure, the duckweed mesh belt 3 is sleeved on the active roller 21 and the guide roller to form a closed-loop conveyor belt actuated by the active roller 21; specifically, the duckweed mesh belt 3 mentioned in the present application can be divided into an outer surface and an inner surface, the inner surface refers to the side in contact with the active roller 21 and the guide roller (in some embodiments of the present invention, the inner surface has a special structure to cooperate with the guide roller, which is described in detail below), and the outer surface is used to collect and convey duckweed. The duckweed mesh belt of the present invention is a mesh structure, refer to Figure 4The main body can be made of artificial silk threads such as nylon, polyethylene, monofilament, twisted silk and braided wire, or a combination of multiple ones, and has a certain elasticity. That is, the conveyor belt itself is the filter, and there is no need to add extra filter structure to increase the overall weight and cost. The filter is used as a transmission structure. Relatively speaking, the filter is continuous for the salvage of duckweed, and can increase the salvage density to salvage as much duckweed as possible. The mesh structure can filter out a large amount of water as soon as possible, reduce the weight of duckweed, and facilitate subsequent collection.

[0025] In another embodiment of the present invention, in order to better collect duckweed, a plurality of guide rollers are provided. Figure 5 The roller assembly 2 includes an active roller 21, a first guide roller 221 and a second guide roller 222. The first guide roller 221 and the second guide roller 222 tension the duckweed mesh belt, and form a duckweed mesh belt 3 section between the first guide roller 221 and the second guide roller 222 to face the water surface and guide the duckweed on the water surface to be transferred to the duckweed catching surface a on the duckweed mesh belt 3. The duckweed catching surface a is set at an acute angle to the water surface, and the angle is selected between 40° and 60°. The optimal inclination angle is 45°. If the relative slope of the duckweed catching surface is steeper, it can better break the water and cater to the duckweed on the water surface. For the duckweed catching surface inserted into the water, the larger the inclination angle is, the more duckweeds are contacted per unit time, and the more efficient the duckweed catching is. However, if the inclination angle is too large, for example, greater than 60°, the duckweed may not be able to hang on the duckweed mesh belt and fall back into the water, which will have a certain impact on the efficiency of duckweed catching. Under the tension of the first guide roller 221 and the second guide roller 222, another transport surface b located on the water surface and facing upward is formed. The transport surface b is designed in a gentle direction when designing the structure. Therefore, the inclination angle of the transport surface b relative to the water surface should be less than 10°. The transport surface b is the downstream of the duckweed picking surface a. It is mainly used to transport duckweed to the corresponding area. Therefore, a relatively gentle setting is conducive to transporting duckweed and preventing duckweed from falling back into the water along the mesh surface. In the present invention, in terms of spatial position, the height of the second guide roller 222 is ensured to be lower than the height of the active roller 21. If the height of the second guide roller 222 is higher than the active roller 21, the length of the duckweed mesh belt 3 will be increased, or more precisely, the length of the duckweed picking surface a, which can easily increase the probability of duckweed falling back into the water along the duckweed picking surface a. In addition, the setting of the second guide roller 222 having a height higher than the active roller 21 can easily guide the water body to flow toward the hull structure.

[0026] Further, see Figure 6The roller assembly 2 of the present invention also includes a third guide roller 223. The third guide roller 223 is located between the active roller 21 and the first guide roller 221. The section of the duckweed mesh belt 3 between the active roller 21 and the third guide roller 223 forms a discharge surface c for unloading duckweed. When the duckweed mesh belt 3 is located in the downward section, it is mainly for unloading duckweed. At least part of the downward section of the duckweed mesh belt 3 is facing the water surface or even entering the water. If the duckweed is not dealt with in advance, it will fall into the water again. The third guide roller 223 tensions the downward part of the duckweed mesh belt 3 into a discharge surface c. The inclination angle of the discharge surface c is larger than that of the original downward surface, which facilitates the duckweed to fall into the collection area that can be opened on the hull structure. That is to say, in cooperation with gravity, the part of the downward surface can be turned into a duckweed unloading area. Of course, the method of unloading by gravity alone is prone to some stubborn duckweed getting stuck on the duckweed mesh belt 3 and unable to fall off. Therefore, the present invention also designs a discharge roller 224. Referring to Figure 7 The roller 224 also includes a feed roller 224, which is arranged between the active roller 21 and the guide roller 223. The feed roller 224 is arranged against the unloading surface c, and the feed roller 224 rotates by itself. A protruding rib 2241 is arranged on the surface of the feed roller 224. To explain in detail, the feed roller 224 itself is a self-rotating roller controlled by a motor. The difference between it and the conventional active roller is that the surface of the feed roller 224 has a protruding rib 2241 arranged along the axial direction of the roller. For the convenience of explanation, the outer surface of the feed roller 224 is divided into an arc surface and a protruding rib 2241, wherein the arc surface is tangent to the unloading surface c, and the protruding rib 2241 of the feed roller 224 during rotation will periodically move the unloading surface c to generate vibration, thereby assisting the duckweed on the unloading surface to fall off. For the duckweed net belt stretched by each guide roller and the active roller 21, the vibration of the unloading surface c area has a relatively slight effect on other surfaces.

[0027] In the present invention, the rotation directions of the active roller 21 and the unloading roller 224 can be the same or opposite. In the opposite rotation direction, the protruding ribs 2241 of the unloading roller 224 slap the unloading surface c more frequently, which is more effective in assisting the unloading surface c to drop duckweed. In the case of the same rotation direction, the angular velocity of the guide roller 224 is greater than the angular velocity of the active roller 21. The testers found that when the angular velocity of the guide roller 224 is 2-3 times the angular velocity of the active roller 21, the effect of cleaning the duckweed on the unloading surface c is best. Once the speed ratio of the two is higher than three times, not only the energy consumption increases, but the fast-rotating unloading roller 224 is likely to damage the duckweed mesh belt 3, thereby shortening the service life of the duckweed mesh belt 3. Regarding the above two rotation directions, they can be selected according to actual needs. The active roller 21 and the unloading roller 224 with the same rotation direction only need one motor to cooperate with the sprocket to adjust the transmission ratio. Although the opposite direction has a better effect, a single motor may need an external gear box to change the rotation direction to control the two to rotate in different directions or an additional motor, which requires a large setting space and a relatively high manufacturing cost.

[0028] Since the duckweed mesh belt 3 used in the present invention is an elastic mesh structure, its self-supporting performance is relatively poor compared to the traditional belt structure. Figure 8 Therefore, the present application provides directional ribs 31 on the contact side between the duckweed mesh belt 3 and the roller assembly 2. The directional ribs 31 provide a keel structure for the duckweed mesh belt 3 and strengthen the support of the duckweed mesh belt 3. In addition, a directional groove 2a is provided in the center of each roller of the roller assembly 2. The directional groove 2a is adapted to the directional ribs 31 to further strengthen the positioning and prevent the duckweed mesh belt 3 from detaching from the roller assembly 2. In the embodiment with a discharge roller 224, the discharge roller 224 is also provided with a corresponding directional groove 2a, and a notch for avoiding the directional ribs 31 is also provided on the protruding rib 2241.

[0029] Since the guide roller 221 of the present invention is placed in water for a long time, a corresponding sealing structure is provided on the first guide roller 221 to protect the bearing inside the first guide roller 221. Fig. 9 In the first guide roller 221, the bearing is arranged on the shaft, a skeleton oil seal 2211 is arranged on the outer side of the bearing, and a nylon retaining ring 2212 for further sealing is arranged between the skeleton oil seal 2211 and the bearing.

[0030] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A self-loading conveying device, arranged on a hull structure, characterized in that: include: A support structure (1) fixedly arranged on the hull structure; a roller assembly (2) arranged on the support structure (1); a duckweed mesh belt (3) sleeved on the roller assembly (2); wherein the duckweed mesh belt (3) is a hollow mesh structure, and the duckweed mesh belt (3) is sleeved on the roller assembly (2) to form a closed-loop transmission belt actuated by the roller assembly (2); the duckweed mesh belt (3) is used to salvage duckweed during navigation and is at least partially located under the water surface, and the portion of the duckweed mesh belt (3) located above the water surface at least forms a duckweed catching surface (a), and the duckweed catching surface (a) is used to face the water surface and guide the duckweed on the water surface to be transferred to the duckweed mesh belt (3).

2. A self-loading conveying device according to claim 1, characterized in that: The roller assembly (2) comprises a driving roller (21), a first guide roller (221) and a second guide roller (222), wherein the second guide roller (222) is located above the first guide roller (221), the duckweed collecting surface (a) is located between the first guide roller (221) and the second guide roller (222), and the duckweed mesh belt (3) is located between the second guide roller (222) and the driving roller (21) to form a transport surface (b) with a gently sloping surface.

3. A self-loading conveying device according to claim 2, characterized in that: A third guide roller (223) is further provided between the active roller (21) and the first guide roller (221), and the section of the duckweed mesh belt (3) between the active roller (21) and the third guide roller (223) forms a dirt discharge surface (c).

4. A self-loading conveying device according to claim 2, characterized in that: The height of the second guide roller (222) is lower than that of the active roller (21).

5. The self-loading conveying device according to claim 3, characterized in that: The roller assembly (2) further comprises a material discharge roller (224), wherein the material discharge roller (224) is arranged between the active roller (21) and the third guide roller (223), and the rotating roller surface of the material discharge roller (224) is arranged against the dirt discharge surface (c), the material discharge roller (224) is self-rotating, and a protruding rib (2241) is arranged on the surface of the material discharge roller (224).

6. The self-loading conveying equipment according to claim 1, characterized in that: An orientation groove (2a) is provided in the centre of each roller of the roller assembly (2), and an orientation rib (31) adapted to the orientation groove (2a) is provided on the contact side of the duckweed mesh belt (3) and the roller assembly (2).

7. The self-loading conveying device according to claim 5, characterized in that: The rotation direction of the unloading roller (224) is the same as the rotation direction of the active roller (21); the angular velocity of the unloading roller (224) is 2-3 times the angular velocity of the active roller (21).

8. The self-loading conveying device according to claim 5, characterized in that: The rotation direction of the unloading roller (224) is opposite to the rotation direction of the active roller (21).

9. The self-loading conveying device according to claim 2, characterized in that: A sealing structure is provided on the first guide roller (221).

10. The self-loading conveying device according to claim 1, characterized in that: The duckweed mesh belt (3) comprises an elastic mesh structure woven from a combination of artificial silk threads.

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