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CN-224205994-U - Device for collecting brook fish and egg seedlings

CN224205994UCN 224205994 UCN224205994 UCN 224205994UCN-224205994-U

Abstract

The utility model discloses a device for collecting stream fishes and egg seedlings, which comprises a frame, wherein handles are symmetrically arranged on two sides of the frame, a cloth sleeve is arranged on the inner side of the frame, a pressing ring is arranged on the inner side of the cloth sleeve, the pressing ring presses the cloth sleeve on the inner side of the frame, a netting is arranged at the rear end of the cloth sleeve, the netting can be quickly detached and replaced, a guide plate is arranged at the bottom of the frame, and the guide plate is detachably connected with the frame. The utility model can quickly change nets with different meshes through the design of the netting to meet the requirements of various acquisition objects, a worker holds the handle to push the whole acquisition device from the bottom of a stream, so that the utility model can effectively buffer the impact of water flow, and the baffle structure can reduce the physical damage to egg seedlings by matching with a bottom-attaching moving mode, and the light frame reduces the disturbance of water body during operation and maintains the stability of the acquisition environment. Through the cooperation of two people and the design of moving the base, can realize large-area sampling at the quick advancing device of stream base.

Inventors

  • YANG KUN
  • WANG WENXIN
  • GAN WEIXIONG
  • XU DAN
  • LI JINMING
  • CHEN PENG
  • LI JIAXING
  • WENG LEI

Assignees

  • 西华师范大学
  • 雅砻江流域水电开发有限公司

Dates

Publication Date
20260508
Application Date
20250610

Claims (10)

  1. 1. A device for collecting stream fishes and egg seedlings comprises a frame (1) and is characterized in that a grip (11) is arranged on the frame (1), a cloth cover (2) is arranged on the inner side of the frame (1), a pressing ring (3) is arranged on the inner side of the cloth cover (2), a plurality of jackscrews (31) are arranged in the pressing ring (3), the cloth cover (2) is pressed on the inner side of the frame (1) through the jackscrews (31), a netting (4) is detachably arranged at the rear end of the cloth cover (2), a guide plate (5) is arranged at the bottom of the frame (1), and the guide plate (5) is detachably connected with the frame (1).
  2. 2. The device for collecting stream fish and egg seedlings according to claim 1, wherein the frame (1) is made of aluminum alloy or carbon fiber materials, the frame (1) is rectangular in shape, and the bottom of the frame (1) is parallel to the stream bottom surface.
  3. 3. The device for collecting stream fish and egg seedlings according to claim 2, wherein slots (13) are formed in the front bottom and the top of the frame (1), a plurality of compression knobs (14) are arranged on the inner side of the frame (1) and aligned with the slots (13), and anti-slip sleeves (12) are arranged on the handles (11).
  4. 4. The device for collecting stream fish and egg seedlings according to claim 1, wherein an edge wrapping rope (21) is arranged at the front end edge of the cloth cover (2), a first pull-in part (22) is arranged at the rear end edge of the cloth cover (2), and a pull head (23) is connected to the first pull-in part (22).
  5. 5. The device for collecting stream fish and egg seedlings according to claim 2, wherein a connecting part (41) is arranged at the front end of the netting (4), a second pulling and closing part (43) is arranged at the front end of the connecting part (41), and the second pulling and closing part (43) is matched with the first pulling and closing part (22) and the pull head (23) so that the netting (4) and the cloth cover (2) are pulled and closed to be connected.
  6. 6. The device for collecting stream fish and egg seedlings according to claim 5, wherein a reversed whisker port (42) is arranged on the inner side of the netting (4), and the opening at the rear end of the netting (4) is bound and sealed through a binding rope (44), so that the opening at the rear end of the netting (4) is conveniently opened to take out fish after collection is completed.
  7. 7. The device for collecting stream fish and egg fries according to claim 1, wherein the mesh (4) is 20-100 mesh, including 50-100 mesh fine mesh for collecting fertilized eggs and 20-50 mesh middle mesh for collecting young fish, and the mesh (4) is preferably nylon or polyester fiber.
  8. 8. The device for collecting stream fish and egg seedlings according to claim 1, wherein the guide plate (5) is obliquely arranged outside the frame (1), a plurality of guide grooves (52) are formed in the surface of the guide plate (5), the guide grooves (52) are formed in the inner side of the netting (4) from the outer side of the guide plate (5), and a cutting edge (51) is formed in one end, which is not connected with the frame (1), of the guide plate (5).
  9. 9. The device for harvesting brook fish and egg seedlings according to any one of the claims 1-8, further comprising a movable base (6), wherein the movable base (6) is clamped at the bottom of the frame (1), and the movable base (6) is detachably connected with the frame (1).
  10. 10. The device for collecting stream fish and egg seedlings according to claim 9, wherein adapter plates (61) are symmetrically arranged on two sides of the bottom of the movable base (6), movable rollers (62) are arranged between the two adapter plates (61), clamping plates (63) are arranged at two ends of the top of the movable base (6), and compression bolts (64) are arranged on the outer side faces of the clamping plates (63).

Description

Device for collecting brook fish and egg seedlings Technical Field The utility model belongs to the technical field of aquatic resource investigation, and particularly relates to a device for collecting stream fish and egg seedlings. Background In the research of stream ecosystem and the investigation of aquatic resources, the collection of early resources of fish (such as fertilized eggs and young fish) has been a difficult problem. The traditional collection method such as a hand net, a trap net and the like has the defects of inconvenient operation, low sampling efficiency, easy sample non-uniformity and the like. The utility model patent with the prior publication number of CN215123495U discloses a novel fish sample collection bag, which comprises a bag body, a separation assembly, a support assembly and a support assembly, wherein the bag body comprises a top bag body and a bottom bag body detachably connected to the top bag body, the separation assembly is arranged in the top bag body and comprises a plurality of conical separation nets which are arranged in the top bag body in parallel, the bottom bag body is divided into a plurality of sub-cavities which are in one-to-one correspondence with the conical separation nets, and the support assembly is connected to the support assembly and is used for supporting the bag body. The novel fish sample collection bag provided by the patent is mainly a collection bag operated by a staff through a telescopic rod, and is convenient to operate. However, most of the fish and egg seedlings of actual streams exist at the bottom of streams, and are benthic fish and egg seedlings. The existing collection device is difficult to accurately collect benthic fishes and egg seedlings, samples are easy to miss, the specification of the net cannot be flexibly adjusted according to the size of a collection object, and the universality is poor. Therefore, there is a need for a collection device with convenient operation, less sample damage and high adaptability Disclosure of utility model The utility model aims to provide a device for collecting brook fish and egg seedlings, which aims to solve the problems that in the prior art, the existing collection device is difficult to accurately collect benthic fish and egg seedlings, sample omission is easy to occur, and the specification of a net tool cannot be flexibly adjusted according to the size of a collection object. In order to achieve the above object, the present utility model provides the following technical solutions A device for collecting stream fishes and egg seedlings comprises a frame, wherein a handle is arranged on the frame, a cloth sleeve is arranged on the inner side of the frame, a pressing ring is arranged on the inner side of the cloth sleeve, a plurality of jackscrews are arranged in the pressing ring, the cloth sleeve is pressed on the inner side of the frame through the jackscrews, a netting is arranged at the rear end of the cloth sleeve, the netting can be quickly detached and replaced, a guide plate is arranged at the bottom of the frame, and the guide plate is detachably connected with the frame. Preferably, the frame is made of aluminum alloy or carbon fiber, the frame is rectangular in shape, and the bottom of the frame is parallel to the bottom surface of the stream. Preferably, slots are formed in the bottom and the top of the front face of the frame, a plurality of compression knobs are arranged on the inner side of the frame and aligned with the slots, and anti-skid sleeves are arranged on the handles. Preferably, the edge of the front end of the cloth cover is provided with an edge wrapping rope, the edge of the rear end of the cloth cover is provided with a first pull-in part, and the first pull-in part is connected with a pull head. Preferably, the front end of the netting is provided with a connecting part, the front end of the connecting part is provided with a second pulling and closing part, and the second pulling and closing part is matched with the first pulling and closing part and the pull head, so that the netting and the cloth sleeve are pulled and closed to be connected. Preferably, the inner side of the netting is provided with a reversed beard opening, and the opening at the rear end of the netting is bound and sealed through a binding rope, so that the opening at the rear end of the netting is conveniently opened after the collection is completed to take out fish. Preferably, the mesh number is 20-100 mesh, including 50-100 mesh fine mesh for collecting fertilized eggs and 20-50 mesh middle mesh for collecting young fish, and the mesh material is preferably nylon or polyester fiber. Preferably, the guide plate is obliquely arranged towards the outer side of the frame, a plurality of guide grooves are formed in the surface of the guide plate, the guide grooves are formed in the outer side of the guide plate towards the inner side of the netting, and a cutting edge is formed in one