Automatic water changing device for cultivation
By designing an automatic water-changing device for the outer and inner pipes, the problem of cumbersome water-changing operations in existing technologies has been solved, realizing automated aquaculture and efficient water circulation, reducing labor costs, and improving production efficiency and water resource utilization.
Patent Information
- Application Number
- CN202520490047.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-20
AI Technical Summary
The existing water exchange operation in aquaculture ponds is cumbersome, especially in large-scale aquaculture where labor costs are high and automation and efficient water circulation are difficult to achieve.
Design an automatic water-changing device comprising an outer tube and an inner tube. The movement of the inner tube is controlled by a linear motor. Combined with a water level control tube and a functional adjustment hole, water circulation and removal of food residue are achieved. The separation of the inner tube from the first through hole enables large-scale water exchange.
It improves the automation level of aquaculture, reduces labor costs, increases production efficiency and environmental quality, and realizes the recycling of water resources.
Smart Images

Figure CN223830190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an aquaculture pond, and more particularly to an automatic water changing device for aquaculture. Background Technology
[0002] In the aquaculture of seafood and freshwater fish, water circulation, feeding, and water exchange are essential. Existing aquaculture ponds have a drain hole at the bottom, inside which a hollow sealing pipe is sealed. The sealing pipe serves two purposes: firstly, it maintains the water level in the aquaculture pond, with the top of the sealing pipe below the top of the pond. When the water level is higher than the sealing pipe, water enters through the top of the sealing pipe and exits through the drain hole; secondly, it seals the drain hole. When changing the water, the sealing pipe is removed, and the water in the aquaculture pond (including uneaten food) is drained through the drain hole, thus changing the water. For large-scale aquaculture, manual water changing is quite cumbersome. Summary of the Invention
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an automatic water changing device for aquaculture.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] An automatic water-changing device for aquaculture includes an outer tube with a first through hole at its lower end and a functional adjustment hole in its middle. An inner tube that can move up and down is installed inside the outer tube, with its lower end blocking the first through hole. A second through hole is provided on the inner tube corresponding to the functional adjustment hole. A water level control pipe is provided on the outside of the outer tube, with its top surface higher than the lowest point of the functional adjustment hole and lower than the highest point of the functional adjustment hole. A water inlet cavity is formed between the water level control pipe and the outer tube, with its lower end communicating with the aquaculture pond.
[0006] An installation housing is installed at the upper end of the outer tube, a linear motor is installed inside the installation housing, and a connecting sleeve is installed on the telescopic shaft of the linear motor. The connecting sleeve is fixed at the upper end of the inner tube.
[0007] The connecting sleeve is provided with a number of arranged vent holes.
[0008] A sealing ring is installed at the lower end of the inner tube.
[0009] The function adjustment hole is an elongated hole.
[0010] The beneficial effects of this utility model are as follows: A first through hole is installed at the lower end of the outer tube, a functional adjustment hole is provided in the middle of the outer tube, and an inner tube that can move up and down is installed inside the outer tube. The lower end of the inner tube blocks the first through hole, and a second through hole is provided on the inner tube corresponding to the functional adjustment hole. A water level control pipe is provided on the outer side of the outer tube, with its top surface higher than the lowest point of the functional adjustment hole and lower than the highest point. A water inlet cavity is formed between the water level control pipe and the outer tube, with its lower end connected to the aquaculture pond. By moving the inner tube, the second through hole and the functional adjustment hole are positioned differently to achieve water circulation and remove food residue. By moving the inner tube, its lower end is completely separated from the first through hole, achieving a large-volume water exchange effect, improving automated aquaculture, increasing production efficiency and aquaculture environment quality, enabling precise feeding management, and reducing labor costs. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] Figure 1 This is an installation diagram of this utility model;
[0013] Figure 2 This is one of the usage state diagrams of this utility model;
[0014] Figure 3 This is the second diagram showing the usage state of this utility model;
[0015] Figure 4 This is the third diagram showing the usage state of this utility model. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0017] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.
[0018] The following describes some embodiments of the present invention with reference to the accompanying drawings.
[0019] Reference Figure 1-4An automatic water-changing device for aquaculture includes an outer tube 1, a first through hole 2 installed at the lower end of the outer tube 1, a functional adjustment hole 3 provided in the middle of the outer tube 1, an inner tube 4 that can move up and down installed inside the outer tube 1, the lower end of the inner tube 4 blocking the first through hole 2, a second through hole 5 provided on the inner tube 4 corresponding to the functional adjustment hole 3, and a water level control pipe 6 provided on the outer side of the outer tube 1. The top surface of the water level control pipe 6 is higher than the lowest point of the functional adjustment hole 3 and lower than the highest point of the functional adjustment hole 3. The water level control pipe 6 and the outer tube 1 form a connection between the lower end and the aquaculture pond (e.g., Figure 1 As shown in Figure A, the water inlet chamber 7 is connected. By moving the inner tube 4, the second through hole 5 and the functional adjustment hole 3 are matched at different positions to achieve water circulation and remove food residue. By moving the inner tube 4, the lower end of the inner tube 4 is completely separated from the first through hole 2, achieving the effect of large-volume water exchange, improving automated aquaculture, increasing production efficiency and aquaculture environment quality, enabling precise feeding management, and reducing labor costs.
[0020] An installation housing 8 is installed at the upper end of the outer tube 1. A linear motor 9 is installed inside the installation housing 8. A connecting sleeve 10 is installed on the telescopic shaft of the linear motor 9. The connecting sleeve 10 is fixed to the upper end of the inner tube 4. When adjustment is required, the inner tube 4 is moved by controlling the linear motor 9. The linear motor 9 is electrically connected to a control board. The control board is equipped with a wireless module that can wirelessly connect to peripherals (such as mobile phones or computers). The movement of the inner tube 4 can be directly controlled by peripherals. A timed start function can also be added. Several vent holes 11 are arranged on the connecting sleeve 10. Through the vent holes 11, external air can be connected to the inside of the outer tube 1. When the inner tube 4 moves, air is replenished or vented through the vent holes 11 to prevent water from being pumped or pressed out of the outer tube 1.
[0021] The mounting housing 8 can be pulled up directly from the outer tube 1, and at the same time, the linear motor 9, the connecting sleeve 10 and the inner tube 4 will be pulled up together, so that it has the function of manual water changing. This avoids the problem of the aquatic organisms dying and causing economic losses due to the failure of the linear motor 9 to perform automatic water changing.
[0022] A sealing ring 12 is installed at the lower end of the inner tube 4 to further improve the sealing effect of the lower end of the inner tube 4 on the first through hole 2 and prevent water leakage.
[0023] The function adjustment hole 3 is an elongated hole, or a gourd-shaped hole, or two independent round holes, etc.
[0024] refer to Figure 2In water circulation mode, the second through hole 5 engages with the lower side of the functional adjustment hole 3. At this time, the top surface of the water level control pipe 6 is higher than the highest point of the second through hole 5 (at this time, the lower end of the inner pipe 4 connects to the first through hole 2). Water in the aquaculture tank enters from the lower end of the inlet chamber 7, passes through the functional adjustment hole 3 and the second through hole 5, enters the inner pipe 4, and then exits through the drainage hole of the aquaculture tank (e.g.,...). Figure 1 As shown in B in the diagram, the discharge is the normal process in the aquaculture pond. C1 and C2 represent the direction of water flow during normal water circulation.
[0025] refer to Figure 3 To remove food residue, the second through hole 5 engages with the upper side of the functional adjustment hole 3. At this time, the top surface of the water level control pipe 6 is lower than the lowest point of the second through hole 5 (at this time, the lower end of the inner pipe 4 still connects to the first through hole 2). The water level in the water inlet chamber 7 continues to rise until it is higher than the lowest point of the second through hole 5. At this time, the water level is also higher than the top surface of the water level control pipe 6. Food residue floating on the water surface passes over the water level control pipe 6. After the functional adjustment hole 3 and the second through hole 5 enter the inner pipe 4, they are discharged from the drain hole of the breeding pond. This operation is generally performed once every 1-2 hours after feeding. D1, D2, and D3 are the directions of water flow when removing food residue. D1 and D2 are the same as C1 and C2, representing the flow state of water circulation. D3 is the flow direction of food residue. During this process, D3 also participates in water circulation.
[0026] After 3-10 minutes of removing food residue, it will automatically return to water circulation mode (this can be achieved through a simple procedure, which is existing technology and will not be described in detail).
[0027] refer to Figure 4 The linear motor 9 controls the inner tube 4 to move upward significantly, and the lower end of the inner tube 4 is completely separated from the first through hole 2. At this time, the water in the aquaculture pond is directly discharged through the first through hole 2. This operation is generally performed once every 24-48 hours. E is the direction of water flow when draining.
[0028] The control panel can be connected to the feeding system (the feeding system is not the focus of this application and will not be described in detail), and automatically start the operation of removing food residue according to the feeding time, further improving the degree of automation of breeding.
[0029] Water discharged through the drain hole can be collected in a collection tank, filtered, and then pumped back into the fish pond, thus realizing water recycling and avoiding waste of water resources.
[0030] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0031] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0032] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An automatic water changing device for aquaculture, comprising an outer tube (1), characterized in that... The lower end of the outer tube (1) is provided with a first through hole (2), the middle part of the outer tube (1) is provided with a functional adjustment hole (3), the inner tube (4) that can move up and down is installed inside the outer tube (1), the lower end of the inner tube (4) blocks the first through hole (2), the inner tube (4) is provided with a second through hole (5) corresponding to the functional adjustment hole (3), the outer side of the outer tube (1) is provided with a water level control pipe (6), the top surface of the water level control pipe (6) is higher than the lowest point of the functional adjustment hole (3) and lower than the highest point of the functional adjustment hole (3), and a water inlet cavity (7) is formed between the water level control pipe (6) and the outer tube (1) with its lower end connected to the aquaculture pond.
2. The automatic water changing device for aquaculture according to claim 1, characterized in that... An installation housing (8) is installed at the upper end of the outer tube (1), and a linear motor (9) is installed inside the installation housing (8). A connecting sleeve (10) is installed on the telescopic shaft of the linear motor (9), and the connecting sleeve (10) is fixed at the upper end of the inner tube (4).
3. The automatic water changing device for aquaculture according to claim 2, characterized in that... The connecting sleeve (10) is provided with a plurality of vent holes (11) arranged in a row.
4. The automatic water changing device for aquaculture according to claim 1, characterized in that... A sealing ring (12) is installed at the lower end of the inner tube (4).
5. The automatic water changing device for aquaculture according to claim 1, characterized in that... The functional adjustment hole (3) is an elongated hole.