CN-122004163-A - Automatic fish fry extracting and counting device and method thereof

CN122004163ACN 122004163 ACN122004163 ACN 122004163ACN-122004163-A

Abstract

The invention belongs to the technical field of aquaculture, and particularly discloses an automatic fish fry extraction and counting device and a method thereof, wherein the automatic fish fry extraction and counting device comprises a suction system, a water supplementing system and a laser correlation sensor, and the suction system comprises a water inlet pipe, a transparent counting pipe, a temporary storage tank, a pipeline filter, a water outlet pipe, a water suction pump and a water outlet pipe which are connected in sequence; the laser correlation sensor comprises a first transmitting end and a first receiving end which are oppositely arranged at two sides of the transparent counting tube, wherein the first transmitting end is used for continuously transmitting laser beams to the transparent counting tube, and the first receiving end is used for receiving the laser beams. According to the invention, through the cooperative design of the suction system, the water supplementing system and the laser correlation sensor, the pain points that the traditional fry treatment labor intensity is high, the counting error is high, the fish body is easy to damage and the suitability of the traditional equipment is insufficient are accurately solved.

Inventors

LV HAOTUN
MA YIMING
DUAN XINGXING
LIU YUPENG
REN YAOHUI
WANG QINGJIE
DUAN RUI
DUAN MING

Assignees

中国农业大学
北京安格瑞尔科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (8)

1. Automatic extraction counting assembly of fry, characterized by includes: The suction system comprises a water inlet pipe, a transparent counting pipe, a temporary storage tank, a pipeline filter, a water outlet pipe, a water suction pump and a water outlet pipe which are sequentially connected, wherein the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe are connected with the culture pond; The water supplementing system comprises a submersible pump, a water supplementing electromagnetic valve and a water supplementing pipeline which are sequentially connected, wherein the water outlet end of the water supplementing pipeline is connected with a water inlet pipe; the first transmitting end is used for continuously transmitting laser beams to the transparent counting tube, the first receiving end is used for receiving the laser beams, when fish fries pass through the transparent counting tube along with water flow, the fish bodies shield the laser beams, the first receiving end can not receive the laser beams to generate level jump and transmit the level jump to the control system, and the control system counts the frequency of the level jump.
2. The automatic fish fry extraction and counting device of claim 1, wherein the pumping system further comprises a first one-way valve, the pipeline filter, the first one-way valve and the water outlet pipe are sequentially connected, and the first one-way valve is used for preventing water from flowing into the collecting container through the fish unloading valve after the water flows back from the water outlet pipe into the temporary storage tank in the fish unloading process.
3. The automatic fish fry extraction and counting device of claim 1, wherein the water inlet pipe comprises a first water inlet pipe and a second water inlet pipe which are connected in sequence, the first water inlet pipe is a soft pipe, the water inlet end of the first water inlet pipe is positioned in the culture pond, and the water outlet end of the second water inlet pipe is connected with the transparent counting pipe.
4. The automatic fish fry extraction and counting device of claim 3, wherein the water replenishing system further comprises a second one-way valve, the water replenishing pipeline is connected to the middle section of the second water inlet pipe through a tee joint, and the second one-way valve is arranged on a section of the second water inlet pipe, which is close to the culture pond, and is used for preventing water from flowing back to the culture pond through the water inlet pipe when the submersible pump operates.
5. The automatic fish fry extraction and counting device of claim 1, wherein the transparent counting tube is made of acrylic material.
6. The automatic fish fry extraction and counting device of claim 1, wherein the temporary storage tank is further provided with a siphon valve for introducing air into the temporary storage tank to break negative pressure when the fish unloading valve is opened to unload fish.
7. The automatic fish fry extraction and counting device of claim 1, wherein the laser correlation sensor further comprises a second transmitting end and a second receiving end which are arranged under the fish unloading valve relatively, when the fish fry is discharged from the fish unloading valve, the fish body shields the laser beam, the second receiving end generates level jump due to the fact that the laser cannot be received and transmits the level jump to the control system, and the control system counts the number of the level jump.
8. An automatic fish fry extraction and counting method, which is characterized by counting fish fries in a culture pond by using the counting device according to any one of claims 1-7, and comprising the following steps: starting a submersible pump and a water supplementing valve, and enabling water in the culture pond to enter the water inlet pipe, the transparent counting pipe and the temporary storage tank through the water supplementing pipeline; After the water supplementing is finished, the submersible pump and the water supplementing electromagnetic valve are closed, the water suction pump is started, water carrying fish fries in the culture pond sequentially passes through the water inlet pipe and the transparent counting tube and enters the temporary storage tank, the fish fries are limited by the pipeline filter and are intercepted in the temporary storage tank, the water is discharged into the culture pond from the temporary storage tank sequentially through the pipeline filter, the water outlet pipe, the water suction pump and the water discharging tube, in the process, when the fish fries pass through the transparent counting tube along with water flow, the fish body shields the laser beam, the first receiving end can not receive laser to generate level jump and transmit the level jump to the control system, the control system counts the number of the level jump, and when the fish fries are counted sufficiently, the water suction pump is turned off.

Description

Automatic fish fry extracting and counting device and method thereof Technical Field The invention belongs to the technical field of aquaculture, and particularly relates to an automatic fish fry extracting and counting device and method. Background Along with the continuous promotion of the large-scale and intensive degree of the aquaculture industry in China, the counting and split charging demands of ornamental fish and economic fish (such as goldfish, grass carp and the like) in the living fish selling link are increased increasingly. Particularly in the sales link, how to realize efficient, accurate and low-damage fry extraction and counting is an important direction of the technology of modern aquaculture equipment. Currently, most farms still rely mainly on manual net fishing, visual counting and manual packaging when selling live fish out of the pond. The traditional mode has the problems of high labor intensity, high counting error, low efficiency and the like, and is difficult to meet the high-efficiency and standardized management requirements of modern cultivation. However, the existing market equipment is mainly divided into two types, namely a large-scale fish extractor which is mainly used for catching and transporting large-scale adult fish or large-scale fish fries, is complex in structure and large in flow, is not suitable for the fine extraction of small ornamental fish with the size of 2 cm-10 cm, and a small fish fry counter which is generally only provided with a single counting function, is required to be assisted with feeding and discharging by manpower or other equipment, and cannot be automatically connected with an extraction system or a packaging link. Therefore, the existing scheme can not realize continuous and stable extraction and accurate counting on the premise of ensuring the safety of the small fish, and the manual intervention is frequent, so that the efficiency is low, and the problems of fish body damage, large counting error, high labor cost and the like are easily caused. Disclosure of Invention Aiming at the problems, the invention aims to provide an automatic fish fry extracting and counting device and an automatic fish fry extracting and counting method. The technical scheme of the invention is that the automatic fish fry extracting and counting device comprises a suction system, a water supplementing system and a laser correlation sensor. The suction system comprises a water inlet pipe, a transparent counting pipe, a temporary storage tank, a pipeline filter, a water outlet pipe, a water suction pump and a water outlet pipe which are sequentially connected, wherein the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe are connected with the culture pond, the water suction pump is used for providing power to suck water carrying fish fries in the culture pond into the temporary storage tank, the fish fries are limited by the pipeline filter and are trapped in the temporary storage tank, the water is discharged from the temporary storage tank into the culture pond sequentially through the pipeline filter, the water outlet pipe, the water suction pump and the water outlet pipe, and a fish unloading valve is arranged at the bottom of the temporary storage tank and used for unloading fish after being opened. The water supplementing system comprises a submersible pump, a water supplementing electromagnetic valve and a water supplementing pipeline which are sequentially connected, wherein the water outlet end of the water supplementing pipeline is connected with a water inlet pipe, the submersible pump is arranged in the culture pond and is used for pumping water in the culture pond into the temporary storage tank before the pumping stage, and the water supplementing electromagnetic valve is used for blocking the water supplementing pipeline during the pumping stage. The laser correlation sensor comprises a first transmitting end and a first receiving end which are oppositely arranged at two sides of the transparent counting tube, wherein the first transmitting end is used for continuously transmitting laser beams to the transparent counting tube, the first receiving end is used for receiving the laser beams, when fish fries pass through the transparent counting tube along with water flow, fish bodies shield the laser beams, the first receiving end can not receive the laser beams to generate level jump and transmit the level jump to the control system, and the control system counts the frequency of the level jump. Further, the suction system further comprises a first one-way valve, the pipeline filter, the first one-way valve and the water outlet pipe are sequentially connected, and the first one-way valve is used for preventing water from flowing into the collecting container through the fish unloading valve after reverse backflow of the water from the water outlet pipe into the temporary storage tank in the fish unloading process