A vacuum suction device

Abstract

This utility model provides a vacuum shell suction device, belonging to the technical field of shell suction devices. It solves the technical problems of high purchase cost and inflexibility in small pond operations of existing shell suction devices. A vacuum shell suction device includes a cylindrical outer shell, with one end closed to form a sealing section and the other end open to form an inlet section. An air suction pipe is fixedly connected to the outer side of the outer shell, and a vacuum pump for vacuuming is connected to the outside of the air suction pipe. A shell suction component is fixedly installed inside the outer shell, forming an air suction chamber between the outer shell and the shell suction component. A filter screen is fixedly connected between the inlet section and the shell suction component. The air suction chamber connects the inner channel of the air suction pipe and the mesh of the filter screen. One end of the shell suction component extends outward from one end of the sealing section to form a shell outlet, and the other end is a shell suction port. A sealing cap is oscillatingly connected to the end of the shell suction component at the shell outlet. A suction pipe is fixedly connected to the outside of the inlet section. This utility model has a compact and lightweight overall structure, suitable for flexible operation in complex environments such as shallow seas and ponds.

Description

Technical Field

[0001] This utility model belongs to the field of shell suction device technology, and specifically refers to a vacuum shell suction device. Background Technology

[0002] With the accelerated upgrading of the aquaculture industry, shellfish harvesting in tidal flats is transitioning from traditional manual methods to mechanization. The core technical challenges of mechanized harvesting systems lie in optimizing the harvesting process. Whether using backhoe digging or vibrating screening methods, while improving harvesting efficiency, two major technical bottlenecks are commonly faced: First, stress damage during the machine-shell contact process leads to a high breakage rate, directly impacting the product's commercial value; second, existing equipment is too heavy, has high purchase costs, is inflexible in small pond operations, and is prohibitively expensive for aquaculture farmers. There is an urgent need to develop a shellfish harvester that improves the flexibility of small pond operations and reduces shellfish breakage. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vacuum suction device.

[0004] The objective of this utility model can be achieved through the following technical solution: A vacuum suction device includes a cylindrical outer shell, one end of which is closed to form a sealing part and the other end is open to form an inlet part. An air suction pipe is fixedly connected to the outer side of the outer shell, and a vacuum pump for vacuuming is connected to the outside of the air suction pipe. A suction element is fixedly installed inside the outer shell, and an air suction cavity is formed between the outer shell and the suction element. A filter screen is fixedly connected between the inlet part and the suction element. The air suction cavity connects the inner channel of the air suction pipe and the mesh of the filter screen. One end of the suction element extends outward from one end of the sealing part to form an outlet and the other end is a suction port. A sealing cap is oscillatingly connected to the end of the suction element at the outlet. A suction pipe is fixedly connected to the outside of the inlet part. The other end of the suction tube is thrown into the sea or pond. Initially, the sealing cap closes the shell outlet, and the vacuum pump starts drawing a vacuum, creating a vacuum between the shell and the suction unit, drawing in the water-shell mixture. The axes of the shell and suction unit are horizontal, while the axis of the suction tube is perpendicular to or inclined to the axis of the shell, positioned above the shell. Under the interception of the filter screen, the shellfish and some muddy water mix and flow from the suction opening to the outlet due to inertia. The negative pressure gradually decreases until the water-shell mixture flows past and pushes open the sealing cap. When the machine is turned off, the sealing cap re-closes the outlet. Shells are collected directly outside the outlet for sorting. The overall machine is compact, flexible in operation, and does not easily damage the shellfish.

[0005] Furthermore, a fixing part is fixedly provided on the outer side of the shellfish outlet, and a rotating shaft is fixedly provided on the fixing part. One end of the sealing cover is provided with a rotating hole, and the rotating shaft passes through the rotating hole. The diameter of the rotating hole is larger than the diameter of the rotating shaft. This design allows the sealing cover to close the shellfish outlet using its own weight. When the machine is turned on, the water-shellfish mixture flows over and pushes open the sealing cover. When the machine is turned off, the sealing cover can quickly return to its original position and re-close the shellfish outlet using its own weight, allowing the water-shellfish mixture to flow out smoothly and reducing damage to the shellfish.

[0006] Furthermore, the outer diameter of the sealing cap is larger than the outer diameter of the outlet.

[0007] Furthermore, the filter screen has a plurality of circumferentially distributed mesh holes, which are strip-shaped holes.

[0008] Furthermore, the strip-shaped holes are distributed in several layers along the circumference, and the strip-shaped holes in each layer are staggered.

[0009] Furthermore, the length of the suction element inside the shell is less than the length of the shell, and there is an inclined opening between the inlet and the suction port, with the filter screen fixed on the inclined opening.

[0010] Furthermore, the end face of the inlet is flush with the end face of the suction port, and the filter screen is fixed on the end face of the inlet and the end face of the suction port.

[0011] Furthermore, one end of the suction port protrudes outside the inlet, and an inclined opening is formed between the suction port and the inlet, with the filter screen fixed on the inclined opening.

[0012] Compared with existing technologies, the technical advantages of this utility model are as follows: 1. By creating a negative pressure environment through a vacuum pump, the mixture of water and shellfish is strongly adsorbed. Utilizing the horizontal axis design of the shell and the suction component, combined with fluid inertia, the mixture of shellfish and some muddy water flows from the suction port to the discharge port. The shellfish, due to inertia, rushes directly towards the discharge port, pushes open the self-weight sealing cap, and is discharged in a concentrated manner, thus improving efficiency and reducing the risk of shellfish damage. 2. The sealing cap opens and closes adaptively by gravity. It is pushed open by the mixture flow during negative pressure suction and automatically resets to seal the discharge port when the machine stops, preventing backflow contamination. 3. The multi-layer staggered strip filter design balances high throughput with impurity interception capacity, avoiding clogging while ensuring uniform water flow distribution and maintaining stable equipment operation. The overall structure is compact and lightweight, suitable for flexible operation in complex environments such as shallow seas and ponds. Attached Figure Description

[0013] Figure 1 This is a perspective view of Embodiment 1 of the present utility model.

[0014] Figure 2 This is a cross-sectional view of one embodiment of the present utility model.

[0015] Figure 3 This is a three-dimensional view of the filter screen in Embodiment 1 of this utility model.

[0016] Figure 4 This is a cross-sectional view of Embodiment 2 of this utility model.

[0017] Figure 5 This is a cross-sectional view of Embodiment 3 of this utility model.

[0018] Drawing number markings: 1. Outer shell; 101. Sealing part; 102. Inlet part; 2. Suction pipe; 3. Suction component; 301. Outlet; 302. Suction port; 4. Suction chamber; 5. Filter screen; 501. Strip hole; 6. Sealing cap; 601. Rotating hole; 7. Suction pipe; 8. Fixing part; 9. Rotating shaft. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1: According to Figures 1 to 3As shown, a vacuum suction device includes a cylindrical outer shell 1. One end of the outer shell 1 is closed to form a sealing part 101, and the other end is open to form an inlet part 102. An air suction pipe 2 is fixedly connected to the outer side of the outer shell 1. The air suction pipe 2 can be fixedly connected to the axis of the outer shell 1 perpendicularly or at an angle. A vacuum pump for vacuuming is connected to the outside of the air suction pipe 2. The vacuum pump is a commercially available pump. A suction element 3 is fixedly disposed inside the outer shell 1. An air suction chamber 4 is formed between the outer shell 1 and the suction element 3. A filter screen 5 is fixedly connected between the inlet part 102 and the suction element 3. The air suction chamber 4 connects the inner channel of the air suction pipe 2 and the mesh of the filter screen 5. One end of the suction element 3 extends outward from one end of the sealing part 101 to form an outlet 301, and the other end is an inlet 302. The length of the suction element 3 inside the outer shell 1 is less than the length of the outer shell 1. The inlet 302 is located inside the outer shell 1. There is an inclined opening between the inlet part 102 and the inlet 302. The filter screen 5 is fixed to the inclined opening. The suction device 3 is oscillatingly connected to a sealing cap 6 at one end of the outlet 301. A suction pipe 7 is fixedly connected to the outside of the inlet 102. The other end of the suction pipe 7 is thrown into the sea or pond. Initially, the sealing cap 6 closes the outlet 301, and the vacuum pump starts drawing a vacuum, creating a vacuum inside the shell 1 and the suction device 3 to draw in the water-shell mixture. The axes of the shell 1 and the suction device 3 are horizontal, and the axis of the suction pipe 2 is perpendicular to or inclined to the axis of the shell 1, positioned above the shell 1. Under the interception of the filter screen 5, the shellfish and some muddy water mix and flow from the suction port 302 to the outlet 301 by inertia. The negative pressure gradually decreases until the water-shell mixture flows past and pushes open the sealing cap 6. When the machine is turned off, the sealing cap 6 re-closes the outlet 301. Shells are collected directly outside the outlet 301 for sorting. The overall machine is compact, flexible in operation, and does not easily damage the shellfish.

[0022] A fixing part 8 is fixedly installed on the outer side of the shellfish outlet 301, and a rotating shaft 9 is fixedly installed on the fixing part 8. A rotating hole 601 is provided at one end of the sealing cover 6, and the rotating shaft 9 passes through the rotating hole 601. The diameter of the rotating hole 601 is larger than the diameter of the rotating shaft 9. The sealing cover 6 can close the shellfish outlet 301 using its own weight. When the machine is turned on, the water-shellfish mixture flows through and pushes the sealing cover 6 open. When the machine is turned off, the sealing cover 6 can quickly return to its original position and re-close the shellfish outlet 301 using its own weight, allowing the water-shellfish mixture to flow out smoothly and reducing damage to the shellfish. The outer diameter of the sealing cover 6 is larger than the outer diameter of the shellfish outlet 301. The filter screen 5 has several circumferentially distributed mesh holes, which are strip-shaped holes 501. The strip-shaped holes 501 are distributed in several layers along the circumference, and each layer of strip-shaped holes 501 is staggered.

[0023] Example 2: According to Figure 4 As shown, unlike the above embodiment, in this embodiment, the end face of the inlet 102 is flush with the end face of the suction port 302, and the filter screen 5 is fixed on the end face of the inlet 102 and the end face of the suction port 302.

[0024] Example 3: According to Figure 5 As shown, unlike the above embodiments, one end of the suction port 302 in this embodiment is exposed outside the inlet portion 102, the length of the suction member 3 is longer than the length of the outer shell 1, an inclined opening is formed between the suction port 302 and the inlet portion 102, and the filter screen 5 is fixed on the inclined opening.

[0025] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A vacuum musselsucker comprising a cylindrical casing (1), characterised in that: The outer shell (1) is closed at one end to form a sealing part (101) and open at the other end to form an inlet part (102). An air suction pipe (2) is fixedly connected to the outer side of the outer shell (1). A vacuum pump for vacuuming is connected to the outside of the air suction pipe (2). A suction element (3) is fixedly installed inside the outer shell (1). An air suction chamber (4) is formed between the outer shell (1) and the suction element (3). A filter screen (5) is fixedly connected between the inlet part (102) and the suction element (3). The air suction chamber (4) connects the inner channel of the air suction pipe (2) and the mesh of the filter screen (5). One end of the suction element (3) extends outward from one end of the sealing part (101) to form an outlet (301) and the other end is a suction port (302). A sealing cap (6) is swung to the end of the suction element (3) located at the outlet (301). A suction pipe (7) is fixedly connected to the outside of the inlet part (102).

2. The vacuum clam extractor according to claim 1, wherein: A fixing part (8) is fixedly provided on the outer side of the outlet (301), and a rotating shaft (9) is fixedly provided on the fixing part (8). A rotating hole (601) is provided at one end of the sealing cover (6), and the rotating shaft (9) passes through the rotating hole (601). The diameter of the rotating hole (601) is larger than the shaft diameter of the rotating shaft (9).

3. A vacuum suction device according to claim 2, characterized in that: The outer diameter of the sealing cap (6) is larger than the outer diameter of the outlet (301).

4. A vacuum suction device according to claim 1, characterized in that: The filter screen (5) has a number of circumferentially distributed mesh holes, which are strip-shaped holes (501).

5. A vacuum suction device according to claim 4, characterized in that: The strip holes (501) are distributed in several layers along the circumference, and the strip holes (501) in each layer are staggered.

6. A vacuum suction device according to any one of claims 1 to 5, characterized in that: The length of the suction element (3) inside the shell (1) is less than the length of the shell (1), and there is an inclined opening between the inlet (102) and the suction port (302), and the filter screen (5) is fixed on the inclined opening.

7. A vacuum suction device according to any one of claims 1 to 5, characterized in that: The end face of the inlet (102) is flush with the end face of the suction port (302), and the filter screen (5) is fixed on the end face of the inlet (102) and the end face of the suction port (302).

8. A vacuum suction device according to any one of claims 1 to 5, characterized in that: One end of the suction port (302) protrudes outside the inlet (102), and an inclined opening is formed between the suction port (302) and the inlet (102), and the filter screen (5) is fixed on the inclined opening.

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