CN-122016371-A - Lake surface layer floating diatom sampling equipment

CN122016371ACN 122016371 ACN122016371 ACN 122016371ACN-122016371-A

Abstract

The invention belongs to the technical field of floating diatom sampling and microbiological detection pretreatment, in particular to lake surface floating diatom sampling equipment, which comprises a handheld rod, a weight shifting mechanism, a water inlet mechanism and an air supporting mechanism, wherein the weight shifting mechanism comprises a limiting component and a bottom suction component, the utility model discloses a handheld pole, including handheld pole, spacing subassembly, bottom suction subassembly, go into water mechanism, spacing subassembly is located to the one end of handheld pole, spacing subassembly is located to the spacing subassembly, the bottom suction subassembly is located on the spacing subassembly, go into water mechanism and include ejecting subassembly and sampling subassembly, ejecting subassembly locates the one end that handheld pole kept away from spacing subassembly, sampling subassembly locates the one side that ejecting subassembly kept away from handheld pole. The invention provides the lake surface floating diatom sampling equipment which can keep the net body vertically stretched in water, ensure that the net mouth is always right opposite to the water flow direction, and ensure that the inside of the collecting net has supporting capability and the effective water filtering area is stable.

Inventors

SONG YING
CHANG SHAN
YU XIAOQIU
PANG XUE
Liu Gaotian
LI HUADONG
DING DANDAN
LIU MIN
YU XIAOHANG

Assignees

黄河水利委员会山东水文水资源局

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (7)

1. The lake surface floating diatom sampling equipment comprises a handheld rod and is characterized by further comprising a weight shifting mechanism, a water inlet mechanism and a gas supporting mechanism, wherein the weight shifting mechanism comprises a limiting component and a bottom suction component, the limiting component is arranged at one end of the handheld rod, the bottom suction component is arranged on the limiting component, the water inlet mechanism comprises a pushing component and a sampling component, the pushing component is arranged at one end of the handheld rod far away from the limiting component, the sampling component is arranged at one side of the pushing component far away from the handheld rod, the gas supporting mechanism comprises an air guide component and a net supporting component, the air guide component is arranged on the bottom suction component, and the net supporting component is arranged on the sampling component; The limiting assembly comprises a positioning plug, a sliding rail, an upper section metal column and a limiting spring; The positioning plug is arranged on the inner wall of one end of the handheld rod, the plurality of groups of sliding rails are arranged on the inner wall of the handheld rod, the upper section of metal column is arranged between the sliding rails in a sliding manner, and the limiting spring is arranged between the upper section of metal column and the positioning plug; the bottom suction assembly comprises a lower end metal sleeve and a bottom suction electromagnetic ring; The lower end metal sleeve is arranged on one side of the upper section metal column, which is far away from the limiting spring, and the bottom suction electromagnetic ring is arranged on the inner wall of one end of the handheld rod, which is far away from the positioning plug; The pushing assembly comprises a pushing electromagnet, a guide post, a guide plate, a pushing spring and an annular magnetic head; the pushing electromagnet is arranged at one end of the lower end metal sleeve, far away from the upper section metal column, the guide column is arranged at one end of the handheld rod, near the bottom electromagnetic attraction ring in a sliding mode, the guide plate is arranged at one side of the guide column, far away from the handheld rod, the pushing spring is arranged between the guide plate at the outer side of the guide column and the handheld rod, and the annular magnetic head is arranged at one side of the guide column, far away from the guide plate.
2. The device for sampling floating diatom on the surface layer of a lake, as set forth in claim 1, wherein the sampling assembly comprises a hinge, a solid net rack, an annular cylinder, a sampling net and a sampling valve, the hinge is arranged on one side of the guide plate far away from the guide post, the solid net rack is hinged on one end of the hinge far away from the guide plate, the annular cylinder is arranged on one side of the solid net rack far away from the hinge, the sampling net is arranged on one side of the annular cylinder far away from the solid net rack, and the sampling valve is communicated with one end of the sampling net far away from the annular cylinder.
3. The device for sampling floating diatom on the surface of a lake of claim 1, wherein the air guide assembly comprises an air guide channel and an air compressing groove, the air guide channel is arranged between the guide post and the guide plate, and the air compressing groove is arranged on one side of the lower end metal sleeve close to the guide post and is provided with an opening at one end.
4. The device for sampling floating diatom on the surface layer of a lake of claim 1, wherein the net supporting component comprises an air guide hose and tubular air bags, the air guide hose is communicated and arranged between the air guide channel and the annular cylinder through a guide plate, a plurality of groups of the tubular air bags are communicated and arranged on the bottom wall of the annular cylinder, and one end, far away from the annular cylinder, of the tubular air bags is arranged on the inner wall of the sampling net.
5. The device for sampling floating diatom on surface layer of lake of claim 4, wherein Teflon abrasion-resistant rubber pads are arranged on the outer sides of the upper section metal column and the lower end metal sleeve.
6. The device for sampling floating diatom on the surface of a lake as claimed in claim 1, wherein the lower metal sleeve is in sliding connection with the sliding rail.
7. The device for sampling floating diatom on the surface of a lake as claimed in claim 1, wherein the upper section metal column is attached to the inner wall of the hand-held rod.

Description

Lake surface layer floating diatom sampling equipment Technical Field The invention belongs to the technical field of floating diatom sampling and microbiological detection pretreatment, and particularly relates to lake surface floating diatom sampling equipment. Background Phytoplankton generally encompasses a variety of planktonic algae such as cyanobacteria, diatoms, xanthomonas, dinoflagellates, and the like. The monitoring of the variation condition of the phytoplankton in the lake is one of key links of the monitoring work of the lake environment. The monitoring result can be applied to various fields such as water bloom prevention and control, ecological condition evaluation, ecological restoration work, biodiversity protection, ecological related mechanism research and the like. The sampling of the floating diatom on the surface layer of the lake is not only the basis of environmental monitoring, but also the key link of the microbiological characteristic research of the diatom (such as physiological metabolism of the diatom, analysis of community structure and separation and culture of algae), the existing simple sampling equipment can only realize the physical interception of the diatom, and the sampling equipment needs to be transferred to a laboratory for pretreatment, so that the inactivation and pollution of the diatom sample are easily caused, and the special requirements of the microbiological research on the in-situ keep-alive and rapid pretreatment of the diatom sample cannot be met. The prior lake surface floating diatom sampling equipment has the following problems: The traditional lake surface floating diatom sampling equipment does not have the capability of enabling a net body to keep vertical extension in water, ensuring that net openings are always right to the water flow direction, enabling the net openings not to be always kept horizontally open, reducing the effective filtering area, enabling the net body to be inclined or folded easily due to water flow impact and operation shaking, and affecting the sampling efficiency; therefore, the use requirement of the existing sampling equipment for floating diatom on the surface layer of the lake cannot be met. Disclosure of Invention Aiming at the situation, in order to overcome the defects of the prior art, the scheme provides the lake surface floating diatom sampling equipment which can keep the net body vertically stretching in water, ensure that the net mouth is always right to the water flow direction, and ensure that the inside of the collecting net has supporting capacity and the effective water filtering area is stable. The technical scheme includes that the lake surface floating diatom sampling device comprises a handheld rod, a weight shifting mechanism, a water inlet mechanism and an air supporting mechanism, wherein the weight shifting mechanism comprises a limiting component and a bottom suction component, the limiting component is arranged at one end of the handheld rod, the bottom suction component is arranged on the limiting component, the water inlet mechanism comprises a pushing component and a sampling component, the pushing component is arranged at one end, far away from the limiting component, of the handheld rod, the sampling component is arranged at one side, far away from the handheld rod, of the pushing component, the air supporting mechanism comprises an air guide component and a net supporting component, the air guide component is arranged on the bottom suction component, and the net supporting component is arranged on the sampling component. As further preferable, the limiting assembly comprises a positioning plug, sliding rails, an upper section metal column and a limiting spring, wherein the positioning plug is arranged on one end inner wall of the handheld rod, a plurality of groups of sliding rails are arranged on the inner wall of the handheld rod, the upper section metal column is slidably arranged between the sliding rails and is attached to the inner wall of the handheld rod, the limiting spring is arranged between the upper section metal column and the positioning plug, the bottom suction assembly comprises a lower end metal sleeve and a bottom suction electromagnetic ring, the lower end metal sleeve is arranged on one side, far away from the limiting spring, of the upper section metal column and is slidably connected with the sliding rails, and the bottom suction electromagnetic ring is arranged on one end inner wall, far away from the positioning plug, of the handheld rod. When the handheld rod is used, the limiting spring is in a compressed state, the distance between the upper section metal column and the positioning plug is the minimum value, the distance between the lower end metal sleeve and the bottom suction electromagnetic ring is the maximum value, and the weight in the handheld rod is concentrated at the bottom of the handheld rod; Preferably, the pushing assembly comprises a pushing elec