Reverse air prevention structure of aquaculture equipment

Abstract

The utility model provides an anti-reverse air structure of aquaculture equipment, which relates to the technical field of aquaculture equipment and comprises a three-way pipe body, a feeding end is arranged at the upper end of the three-way pipe body, an air inlet end is arranged on one side of the three-way pipe body, and a discharging end is arranged on the other side of the three-way pipe body. A conical air guide pipe is arranged in the three-way pipe body and located between the air inlet end and the discharging end, and the length of the air guide pipe is set along the direction of the center connecting line of the air inlet end and the discharging end. The device has the advantages that blown-in gas enters the air guide pipe through the air inlet end and then flows to the discharging end, the flow direction of the gas can be clearer through the arrangement, the gas path is prevented from deviating, the air guide pipe is conical, certain negative pressure is formed on the periphery of the air outlet of the air guide pipe, and therefore the gas flow direction is uniform. Therefore, the feed is sucked to smoothly enter the circulation channel and finally fall into the discharge end to be discharged; due to the design of the air guide pipe, air is prevented from being blown upwards to the feeding end to form air channeling, and the air reversing prevention effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture equipment technology, and in particular to an anti-backdraft structure for aquaculture equipment. Background Technology

[0002] In recent years, my country's aquaculture industry has developed significantly, with pond aquaculture accounting for 80% of China's aquaculture output. Feed is an important input in aquaculture production, and whether the feed feeding technology is reasonable is one of the most important factors affecting the results of pond aquaculture and environmental and ecological benefits.

[0003] Currently, there are numerous publicly available patents related to aquaculture equipment. For example, the technical solution of Chinese patent document (publication number: CN206791400U, patent name: an automatic feed dispensing device for aquaculture) discloses that "the feed dispensing device includes a mounting frame, a feed bucket, a three-way feed pipe, a blower, and a discharge head; the mounting frame is installed on the upper surface of the floating plate, the feed bucket is detachably installed on the mounting frame, the bottom end of the feed bucket has a feed outlet, a mesh is installed at the feed outlet, the first end of the three-way feed pipe is connected to the feed outlet through the mesh, the second end of the three-way feed pipe is connected to the air outlet of the blower, the third end of the three-way feed pipe is connected to the discharge head, the second end of the three-way feed pipe and the third end of the three-way feed pipe are on the same straight line, the discharge head is located directly above the water surface, and the blower is connected to the controller."

[0004] Based on the description and drawings in the patent document, when the automatic feeding device feeds the feed, it uses a blower to blow the feed falling under gravity from the third end of the three-way feed tube, so that the feed falls into the water. However, since the first, second and third ends of the three-way feed tube are connected, the air blown in by the blower from the second end may also enter the first end, causing cross-flow and affecting the normal discharge of the feed.

[0005] Therefore, it is necessary to disclose a wind-proof structure for aquaculture equipment to overcome the above-mentioned defects. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides an anti-backdraft structure for aquaculture equipment. By installing a conical air guide pipe inside a three-way pipe, the direction of gas flow is made clearer, preventing the gas path from deviating and effectively improving the feeding efficiency.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] A backdraft prevention structure for aquaculture equipment includes a three-way pipe body. The three-way pipe body has a feed inlet at its upper end, an air inlet on one side, and a discharge end on the other side. A conical air guide pipe is installed inside the three-way pipe body, located between the air inlet and discharge ends, with its length following the direction of the line connecting the centers of the air inlet and discharge ends. The air inlet, air guide pipe, and discharge end are connected, with the air guide pipe located below the feed inlet. The air guide pipe has a conical outer wall, and the horizontal projected area of ​​the feed inlet opening is located on the conical outer wall. A flow channel is provided between the conical outer wall and the inner wall of the three-way pipe body, and the feed inlet, flow channel, and discharge end are connected.

[0009] Furthermore, the line connecting the center of the air inlet end and the center of the material outlet end coincides with the central axis of the air duct and is perpendicular to the central axis of the material inlet end.

[0010] Furthermore, the air duct is provided with an air inlet at one end and an air outlet at the other end, with the air inlet located on the side closer to the air inlet and the air outlet located on the side closer to the material outlet.

[0011] Furthermore, the diameter of the air inlet is larger than the diameter of the air outlet.

[0012] Furthermore, a first arc is formed at the junction of the feed end and the air inlet end, and a second arc is formed at the junction of the feed end and the discharge end; the flow channel is located between the second arc and the outer wall of the cone.

[0013] Furthermore, a first step is formed between the first arc position and the feed end, and a second step is formed between the first arc position and the air inlet end.

[0014] Furthermore, the three-way pipe is symmetrically arranged with respect to the central axis of the feed end.

[0015] Furthermore, the edge of the air outlet expands outward to form a limiting mounting edge, which is used in conjunction with the second step.

[0016] Furthermore, the side of the limiting mounting edge facing the outer wall of the conical surface is flat.

[0017] Furthermore, the outer diameter of the limiting mounting edge matches the inner diameter of the feed end.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The blown-in gas enters the air duct at the inlet and flows to the outlet. This design makes the gas flow direction clearer and prevents the gas path from deviating. The air duct is conical. As the gas flows from the inlet to the outlet, the cross-sectional area gradually decreases, i.e., the aperture gradually decreases. The high-speed flow of the gas in the air duct creates high pressure, which creates a certain negative pressure around the outlet of the air duct, i.e., creates a negative pressure in the flow channel. This attracts the feed to smoothly enter the flow channel and finally fall into the outlet. Finally, the gas blows the feed out of the outlet. The design of the air duct also prevents the gas from blowing upwards to the inlet and causing backflow, thus preventing backflow. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is an overall diagram of the anti-backdraft structure of the aquaculture equipment according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of the anti-backdraft structure of the aquaculture equipment according to an embodiment of this utility model;

[0023] Figure 3 This is a cross-sectional view of the three-way pipe body according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the air duct of an embodiment of this utility model.

[0025] In the diagram: 1-Tee pipe body, 101-Feeding end, 102-Air inlet end, 103-Discharge end, 104-First arc position, 105-Second arc position, 106-First step position, 107-Second step position, 2-Air guide pipe, 201-Air inlet, 202-Air outlet, 203-Limiting installation edge; 204-Conical outer wall, 3-Flow channel. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] like Figures 1 to 2As shown, an anti-backdraft structure for aquaculture equipment includes a three-way pipe body 1. The upper end of the three-way pipe body 1 has a feed inlet 101, and one side of the three-way pipe body 1 has an air inlet 102 connected to a blower or other air-blowing equipment. The other side of the three-way pipe body 1 has a discharge end 103. A conical air guide duct 2 is installed inside the three-way pipe body 1, located between the air inlet 102 and the discharge end 103, and the length of the air guide duct 2 is along the length of the air inlet 102 and the discharge end 103. 3. The center line connecting the two is opened in the direction so that the airflow blown in from the blower or other blowing equipment is blown along the length of the air guide duct 2; the air inlet end 102, the air guide duct 2 and the discharge end 103 are connected, and the air guide duct 2 is located below the feed end 101; the air guide duct 2 has a conical outer wall 204, and the horizontal projected area of ​​the opening of the feed end 101 is located on the conical outer wall 204. This can prevent the airflow of the air guide duct 2 from blowing upward into the feed end 101 and forming cross-flow, which has the function of preventing backflow. A flow channel 3 is provided between the outer wall 204 of the cone and the inner wall of the three-way pipe 1. The feed end 101, the flow channel 3, and the discharge end 103 are connected. The gas blown out by the blower enters the air guide pipe 2 through the air inlet 102, and then enters the discharge end 103 from the air guide pipe 2. At the same time, the feed enters the three-way pipe 1 from the feed end 101. Since the air guide pipe 2 is conical, and the cone gradually narrows in accordance with the airflow direction, the gas will flow in the air guide pipe 2 and near the outlet of the air guide pipe 2. The high-pressure acceleration is achieved by creating a certain negative pressure around the outlet of the air duct 2 when the wind speed is high. This negative pressure creates a negative pressure in the flow channel 3. The negative pressure will have a certain adsorption force on the feed falling from the feed end 101, so that the feed is sucked into the flow channel 3 and falls into the discharge end 103. Finally, the feed is blown out of the discharge end 103 by the gas. This setting can make the gas flow direction clearer, effectively prevent the gas path from deviating, and improve the feeding efficiency.

[0028] Specifically, such as Figures 2 to 4 As shown, the taper of the outer wall 204 of the conical surface of the air duct 2 is 35°. The inventor discovered that the 35-degree conical structure can ensure that the flow of gas through the air duct 2 is sufficient, while not affecting the entry of feed into the flow channel 3.

[0029] The line connecting the center of the air inlet 102 and the center of the discharge end 103 coincides with the central axis of the air duct 2 and is perpendicular to the central axis of the feed end 101, making the overall structure stable and symmetrical.

[0030] One end of the air duct 2 is provided with an air inlet 201, and the other end of the air duct 2 is provided with an air outlet 202. The air inlet 201 is located on the side near the air inlet end 102, and the air outlet 202 is located on the side near the discharge end 103. The diameter of the air inlet 201 is larger than the diameter of the air outlet 202. When the gas flows from the air inlet 201 to the air outlet 202, the gas flow rate increases continuously due to the gradual reduction of the cross-sectional area. Furthermore, the gas gradually converges towards the central axis during the flow process, achieving gas focusing and enabling the feed falling into the discharge end 101 to be blown out more quickly.

[0031] A first arc position 104 is formed at the junction of the feed end 101 and the air inlet end 102, and a second arc position 105 is formed at the junction of the feed end 101 and the discharge end 103. The flow channel 3 is located between the second arc position 105 and the outer wall 204 of the cone. The arc position design makes the flow path of feed from the feed end 101 through the flow channel 3 into the discharge end 103 smoother and more natural.

[0032] The three-way pipe body 1 is symmetrically arranged with the central axis of the feed end 101. The symmetrical structure of the central axis means that the air inlet end 102 and the discharge end 103 do not need to be limited during the initial production. The air guide pipe 2 can be directly installed.

[0033] A first step 106 is formed between the first arc position 104 and the feed end 101. The first step 106 allows other pipes to be inserted into the feed end 101 to facilitate feed transportation. A second step 107 is formed between the first arc position 104 and the air inlet 102. The edge of the air outlet 202 expands outward to form a limiting installation edge 203. The limiting installation edge 203 works in conjunction with the second step 107. When the air guide pipe 2 is installed inside the three-way pipe body 1, the limiting installation edge 203 is limited to the second step 107, which not only achieves the effect of limiting installation but also prevents gas from flowing out between the limiting installation edge 203 and the second step 107.

[0034] The side of the limiting mounting edge 203 facing the outer wall 204 of the conical surface is flat. The outer diameter of the limiting mounting edge 203 matches the inner diameter of the feed end 101, which facilitates the fitting and installation of the limiting mounting edge 203 with the second step position 107 and ensures the tightness between the limiting mounting edge 203 and the second step position 107.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A backdraft prevention structure for aquaculture equipment, characterized in that, The device includes a three-way pipe body (1), with a feed end (101) at the upper end, an air inlet end (102) on one side, and a discharge end (103) on the other side. A cone-shaped air guide pipe (2) is installed inside the three-way pipe body (1). The air guide pipe (2) is located between the air inlet end (102) and the discharge end (103), and the length of the air guide pipe (2) is along the center line connecting the air inlet end (102) and the discharge end (103). The direction is opened; the air inlet (102), the air duct (2) and the discharge end (103) are connected. The air duct (2) is located below the feed end (101). The air duct (2) has a conical outer wall (204). The horizontal projection area of ​​the opening of the feed end (101) is located on the conical outer wall (204). A flow channel (3) is left between the conical outer wall (204) and the inner wall of the three-way pipe (1). The feed end (101), the flow channel (3) and the discharge end (103) are connected.

2. The anti-backdraft structure for aquaculture equipment according to claim 1, characterized in that, The line connecting the center of the air inlet (102) and the center of the discharge end (103) coincides with the central axis of the air duct (2) and is perpendicular to the central axis of the feed end (101).

3. The anti-backdraft structure for aquaculture equipment according to claim 2, characterized in that, The air duct (2) has an air inlet (201) at one end and an air outlet (202) at the other end. The air inlet (201) is located near the air inlet end (102), and the air outlet (202) is located near the material outlet end (103).

4. The anti-backdraft structure for aquaculture equipment according to claim 3, characterized in that, The diameter of the air inlet (201) is larger than the diameter of the air outlet (202).

5. The anti-backdraft structure for aquaculture equipment according to claim 4, characterized in that, A first arc position (104) is formed at the junction of the feed end (101) and the air inlet end (102), and a second arc position (105) is formed at the junction of the feed end (101) and the discharge end (103); the flow channel (3) is located between the second arc position (105) and the outer wall of the cone surface (204).

6. The anti-backdraft structure for aquaculture equipment according to claim 5, characterized in that, A first step (106) is formed between the first arc position (104) and the feed end (101), and a second step (107) is formed between the first arc position (104) and the air inlet end (102).

7. The anti-backdraft structure for aquaculture equipment according to claim 2, characterized in that, The three-way pipe (1) is symmetrically arranged with respect to the central axis of the feed end (101).

8. The anti-backdraft structure for aquaculture equipment according to claim 4, characterized in that, The air outlet (202) expands outward to form a limiting installation edge (203), which is used in conjunction with the second step (107).

9. The anti-backdraft structure for aquaculture equipment according to claim 8, characterized in that, The side of the limiting mounting edge (203) facing the outer wall (204) of the cone surface is flat.

10. The anti-backdraft structure for aquaculture equipment according to claim 8 or 9, characterized in that, The outer diameter of the limiting mounting edge (203) matches the inner diameter of the feed end (101).

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