Mechanical harvesting technology and device for beach clams

Abstract

The invention relates to a mechanical harvesting technology for beach clams. The technology comprises the steps that vibration is generated through an early mechanical vibration array, a high-frequency signal is transmitted to the sand land surface through an ultrasonic generation array, and ultrasonic vibration is generated through conducting of a water body on a sandy soil layer, so that water in the soil layer is cavitated to enable sandy soil to be loosened, and then the clams in the sandy soil are excited to go out of the sand surface; a follow-up clam harvesting device collects the clams, sediments and seawater together, solid-liquid separation and roller screening for removing the sediments are sequentially conducted, and finally the clams are collected in a basket; a flat die pressure sensor monitors the water pressure at a vibration plate in real time, a signal is fed back to a control part when the water pressure is insufficient, the control part starts a spray pump to suck water from a water storage tank, and water is sprayed through a water spray pipe. According to the technology, the clams are caught at a beach, the device for exciting the clams to be out is additionally arranged on the basis of a single harvesting process, therefore, the clams can quickly go out of the soil automatically, and then the operation efficiency is improved.

Description

Technical field [0001] The invention relates to a mechanized harvesting process and equipment of shoal lamella clams, belonging to the technical field of shoal lamella harvesting. Background technique [0002] Clams, also known as clams, belong to the family Clamidae of the order Bivalvia and are one of the main economic shellfish in China. Its shell is slightly triangular, with a round belly and thick shell. The two shells are equal in size. They live in areas such as inner bays with fresh water and fine sandy beaches near estuaries and intertidal zones. [0003] Clams are buried-dwelling shellfish, which are mostly distributed in the intertidal zone of the inner bay near the relatively flat sea (river) mouth, and in the fine sand and mud beaches of the shallow sea area. They have the habit of submerging sand by the action of gastropedal drilling. The depth of habitat varies with water temperature and individual size. In winter, the burrowing depth of 2-3cm clam is 6-8cm, while t...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is: in the existing mechanized harvesting process of tidal flat clams, the blades will directly hit the clams, and the damage rate is high; Changes in the stratum structure of the tidal flat and irrational migration of the sediment layer lead to uneven distribution of the sediment layer, which will seriously affect the ecological environment under long-term effects, and subsequent tidal flat leveling and restoration work is required

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