A multi-stage structure sewage suction device

Abstract

The utility model discloses a kind of sewage suction devices of multistage structure, it is related to aquaculture equipment technical field.The utility model includes frame body, still including externally placed on the frame body upper end first cavity and internally placed in the frame body second cavity, the bottom of the frame body is provided with outlet, first passageway is provided in the first cavity, second passageway is provided in the second cavity, filter screen is provided between the first cavity and second cavity, flow guide plate that is arranged spirally downward along its inner wall is provided in the second passageway, and the first passageway and second passageway form spiral sinking sewage channel.The utility model is arranged on frame body first cavity and second cavity arranged from top to bottom, while flow guide plate that is arranged spirally downward along its inner wall is arranged in second cavity, so that rotating effect is generated to water flow in first passageway and second passageway, rotating water flow generates centripetal suction, increases sewage suction capacity, improves sewage effect.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture equipment technology, and in particular to a multi-stage suction device. Background Technology

[0002] In large-scale aquaculture, elevated ponds are commonly used. However, most of these ponds suffer from poor bottom sludge collection and drainage, resulting in poor water quality, increased susceptibility to disease in farmed aquatic products, and significantly impacting their survival rates. Existing elevated ponds typically have drainage mechanisms at the bottom. For example, patent number 202021992169.7, entitled "An Elevated Pond for Integrated Rice-Aquaculture," describes a drainage device at the bottom of the elevated pond. Specifically, this device includes a filter plate with a central outlet for sludge discharge. This type of drainage structure is simple, with a drain pipe directly installed at the bottom of the pond. Discharge is achieved using water pressure differential or a pump. However, the suction generated in the pond and drain pipe is limited. Therefore, existing drainage mechanisms have poor sludge collection, and sludge accumulates in the central area, preventing proper drainage. This leads to secondary breakage of fish fry and some re-integration into the water. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-stage suction device that can increase suction capacity and improve sewage discharge effect.

[0004] The purpose of this utility model is achieved through the following technical solution: a multi-stage suction device, including a frame, a primary cavity externally placed on the upper end of the frame, and a secondary cavity built into the frame. The bottom of the frame is provided with an outlet. The primary cavity is provided with a first channel, and the secondary cavity is provided with a second channel. A filter screen is provided between the primary cavity and the secondary cavity. A guide plate spirally arranged downward along its inner wall is provided in the second channel. The outlet end of the second channel is connected to the outlet through a connecting pipe. The first channel and the second channel form a spirally descending suction channel.

[0005] This solution employs a two-stage conical bottom sludge collection structure. A power pump or other power source is connected to the external secondary chamber. Alternatively, the secondary chamber can directly drain water using a differential pressure method (simply by installing a valve). Within the second channel, the suction force generated by the power source, combined with the spiral guide plate structure, converts the pump's suction into rotational suction, creating a strong rotational force on the water. Under the influence of the water flow in the second channel, the water flow in the first channel, relying on its own rotation, generates centripetal force to pull the sludge towards the secondary chamber. It is evident that the spiral guide plate structure in the second channel enhances the rotational effect of the water flow in the first channel, ultimately achieving excellent sludge suction and discharge performance.

[0006] Preferably, the frame is provided with a mounting plate arranged along its inner wall, and the filter screen is detachably mounted on the mounting plate. The filter screen can be matched with different specifications. Different sizes of fish catch correspond to different sizes of filter screens. The filter screen design ensures effective waste removal while preventing the discharge of fish fry and large debris.

[0007] Preferably, both the primary and secondary cavities are conical cavities, wider at the top and narrower at the bottom. In this design, the water flow in both cavities exhibits strong adsorption capacity, and the conical shape enhances the rotational effect of the water flow. The first and second channels are coaxially arranged, facilitating the flow of rotating water within them. The outlet of the second channel is located at its center, promoting the discharge of the rotating water. The cone angle of the primary cavity is greater than that of the secondary cavity. The cone angle of the secondary cavity is α, where 30°≤α≤120°. The frame also includes multiple reinforcing ribs for connecting and supporting the secondary cavity, further improving its stability. The width of the guide plate gradually narrows from top to bottom. In this design, both the primary and secondary cavities can be connected to the frame by welding or detachable installation. When detachable installation is used, a sealing ring should be installed at the connection point to ensure the water passage's airtightness.

[0008] The beneficial effects of this utility model are: a primary cavity and a secondary cavity are arranged from top to bottom on the frame, and a guide plate is arranged spirally downward along its inner wall in the secondary cavity, so that the water flow in the first channel and the second channel generates a rotation effect. The rotating water flow generates centripetal suction, which increases the sewage suction capacity and improves the sewage discharge effect. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a top view of the present invention;

[0011] Figure 3 This is a schematic diagram of the installation structure of the filter screen of this utility model;

[0012] Figure 4 This is a schematic diagram of the installation structure of the guide plate of this utility model;

[0013] Figure 5 This is a schematic diagram of the installation mechanism for the reinforcing rib of this utility model.

[0014] In the diagram, 1-frame, 2-primary chamber, 3-secondary chamber, 4-filter screen, 5-connecting pipe, 6-power water pump, 101-outlet, 102-mounting plate, 103-reinforcing rib, 201-first channel, 202-primary filter screen, 301-second channel, 302-guide plate. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] like Figures 1-4 As shown, a multi-stage suction device includes a frame 1, a primary cavity 2 externally located on the upper end of the frame 1, and a secondary cavity 3 internally located within the frame 1. The bottom of the frame 1 has an outlet 101. The primary cavity 2 has a first channel 201, and the secondary cavity 3 has a second channel 301. A filter screen 4 is disposed between the primary cavity 2 and the secondary cavity 3. A guide plate 302 spirally arranged downwards along the inner wall of the second channel 301 is disposed therein. The outlet end of the second channel 301 is connected to the outlet 101 via a connecting pipe 5. The first channel 201 and the second channel 301 form a spirally descending suction channel. It should be noted that, to increase the filtration effect, a primary filter screen 202 can also be disposed at the inlet end of the primary cavity 2. The primary filter screen 202 and the filter screen 4 form a two-stage filtration structure, with the pore size of the primary filter screen 202 being larger than that of the filter screen 4.

[0017] The frame 1 is provided with an mounting plate 102 arranged along its inner wall, and the filter screen 4 is detachably mounted on the mounting plate 102. Both the primary cavity 2 and the secondary cavity 3 are conical cavities, wider at the top and narrower at the bottom. The primary cavity 2 has a wide inner diameter of 1352 mm and a narrow inner diameter of 600 mm, while the secondary cavity 3 has a wide inner diameter of 600 mm and a narrow inner diameter of 127 mm. In this design, the primary cavity 2 and the secondary cavity 3 are not directly connected due to practical considerations. Therefore, the first channel 201, part of the inner cavity of the frame 1 (located between the primary cavity 2 and the secondary cavity 3), and the second channel 301 form a water channel. It should be noted that, in this design, a surrounding plate can also be provided on the primary cavity 2 to extend the first channel 201 into the second channel 301, with the first channel 201 and the second channel 301 arranged coaxially. The outlet end of the second channel 301 is located at the center of the second channel 301. The cone angle of the primary cavity 2 is greater than that of the secondary cavity 3. The cone angle of the secondary cavity 3 is α, where α is 60°, and the cone angle of the primary cavity 2 is 132°. For example... Figure 5 As shown, the frame 1 is also provided with multiple reinforcing ribs 103 for connecting the auxiliary support secondary cavity 3, and the reinforcing ribs 103 are evenly distributed around the secondary cavity 3. The width of the guide plate 302 narrows from top to bottom. It should be noted that this solution can also use a water pressure differential method for drainage, with the outlet 101 located at the bottom of the frame 1, and a corresponding valve installed on the connecting pipe 5. Different drainage methods can be selected for high-level pools in different scenarios.

[0018] This solution employs a two-stage sewage discharge mechanism. A power water pump 6 is connected to the connecting pipe outside the secondary chamber 3. After the first channel 201 in the primary chamber 2 sucks the sewage to the central area, the sewage will sink into the second channel 301 of the secondary chamber 3. When the power water pump 6 is turned on, it can obtain a strong suction force. After the power water pump 6 is started, the guide plate 302 in the second channel 301 generates a rotation effect and adds centripetal suction force to the water flow in the second channel 301. At the same time, the first channel 201 connected to it will also generate a rotation effect and add centripetal suction force, thereby effectively discharging sewage and achieving a good sewage discharge effect.

[0019] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A multi-stage suction device, comprising a frame (1), characterized in that, It also includes a primary cavity (2) externally placed on the upper end of the frame (1) and a secondary cavity (3) built into the frame (1). The bottom of the frame (1) is provided with an outlet (101). The primary cavity (2) is provided with a first channel (201). The secondary cavity (3) is provided with a second channel (301). A filter screen (4) is provided between the primary cavity (2) and the secondary cavity (3). The second channel (301) is provided with a guide plate (302) spirally arranged downward along its inner wall. The outlet end of the second channel (301) is connected to the outlet (101) through a connecting pipe (5). The first channel (201) and the second channel (301) form a spirally sinking suction channel.

2. The multi-stage suction device according to claim 1, characterized in that, The frame (1) is provided with an installation plate (102) arranged along its inner wall, and the filter screen (4) is detachably installed on the installation plate (102).

3. The multi-stage suction device according to claim 1, characterized in that, Both the primary cavity (2) and the secondary cavity (3) are conical cavities that are larger at the top and smaller at the bottom.

4. A multi-stage suction device according to any one of claims 1 or 3, characterized in that, The first channel (201) and the second channel (301) are arranged coaxially.

5. A multi-stage suction device according to claim 4, characterized in that, The outlet end of the second channel (301) is located at the center of the second channel (301).

6. The multi-stage suction device according to claim 3, characterized in that, The cone angle of the primary cavity (2) is greater than that of the secondary cavity (3).

7. A multi-stage suction device according to claim 6, characterized in that, The cone angle of the secondary cavity (3) is α, where 30°≤α≤120°.

8. A multi-stage suction device according to claim 1, characterized in that, The frame (1) is also provided with multiple reinforcing ribs (103) for connecting the auxiliary support secondary cavity (3).

9. A multi-stage suction device according to claim 1, characterized in that, A power water pump (6) is also installed on the connecting pipe (5).

10. A multi-stage suction device according to claim 1, characterized in that, The width of the guide plate (302) is arranged to narrow from top to bottom.

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