CN203327738U - Device for building high-continuous-gradient salinity selection test through grading dilution - Google Patents
Device for building high-continuous-gradient salinity selection test through grading dilution Download PDFInfo
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- CN203327738U CN203327738U CN2013202218774U CN201320221877U CN203327738U CN 203327738 U CN203327738 U CN 203327738U CN 2013202218774 U CN2013202218774 U CN 2013202218774U CN 201320221877 U CN201320221877 U CN 201320221877U CN 203327738 U CN203327738 U CN 203327738U
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Abstract
The utility model discloses a device for building a high-continuous-gradient salinity selection test through the grading dilution. The device comprises a salt pond and a water groove, a water outlet pipe of the salt pond is connected with a water inlet of the water groove, the water outlet pipe lower than the top face of the salt pond is fixed in the middle of a steeling barrel of the salt pond, a vertical-direction stirring machine and a horizontal-direction stirring machine are arranged on the left side and the right side of the steeling barrel, a thruster is arranged at one end, close to the water inlet, of the water groove, fresh water inlet pipes are arranged inside the water groove, a fresh water spraying pipe is connected to the tail ends of the fresh water inlet pipes, scale marks are arranged on the water groove, the fresh water spraying pipe is arranged in a three-grade mode in the direction of the water inlet of the water groove, the tail end of the fresh water spraying pipe is closed, a water spraying hole is formed in the fresh water spraying pipe, and the included angle between the water spraying hole and the bottom face of the water groove is 30 degrees to 45 degrees. The device can achieve continuous changes of the salinity, small in influence of water flow, animal ingestion and the like and remarkable in test effect.
Description
Technical field
The utility model belongs to aquatic science experimental provision field, specially refers to salinity choice experiment device.
Background technology
Because the important chemical parameters of salinity water body self, so, for eurysaline fishes, Haihe River migration and fish, salinity selects to affect distribution and the growth of water body.
Current, except physiological models, the device of directly observing fish salinity hobby mainly contains two classes: a kind of is to utilize fresh water and the salt solution formation section that slowly meets, and salt solution and fresh water can not mix very soon.The second is to utilize one high and one low salinity, and the central water outlet met in salinity is placed hope on osmotic pressure and regulated the salinity gradient that forms horizontal direction.
Houston (1957) and Baggerman (1960) with standing, slowly soak the mode of flooding, consistent some being put in symmetrically and evenly in a larger container II of container I by size specification.Larger container II and container I bottom level, but larger container II is higher than the container I how much.Slowly inject fresh water and put into the experiment fish at the larger remainder of container II except the container I, after fresh water is injected into container I height, more slowly enter container, exceed subsequently container I height.Fish is selected to swim into salt solution via fresh water, with this, reaches the purpose of selecting salinity.Staaland(1969) retaining device of design, done and improved the container I, is modified into the baffle plate of upper and lower arrangement straggly; Gentle what thread in the village just (2005) salinity of aquatic animal maze experiment device is all to utilize different salinity to there will be the principle of layering, reaches static balancing.1), be when putting into the fish body after advantage is the salinity that is easy to confirm that aquatic animal is selected, but the defect that this design exists:, salinity stratification is held time short (how thread has just proved 24h), to the detection of having no way of of the chronicity of salinity adaptation; 2), be the activity that the existence of dividing plate has hindered fish, use the device of Houston (1957) and Baggerman (1960) to be applicable to epipelagic fish; Staaland(1969) be applicable to midwater fishes; Gentle what thread in the village just device of (2005) is applicable to demersal fishes; 3), can't realize the continuity of salinity.
Jury(1994) experiment of the device of the circle of design belongs to the salinity choice experiment of shrimps, apopore is positioned at the intersection bottom, verifiedly can not occur that the salinity of horizontal direction is divided into, but the vertical demixing of vertical direction, high salinity is at bottom, Low-salinity is on upper strata, and the apopore water outlet is highrank fuel salinity water; It is the rectangular build of double flute that Daryl c. Parkyn (2002) changes circular, and apopore still is positioned at two salinity engagement points, has added resistance salt cylinder.Gu Xiaolian (2007) improves this device, and two kinds of salinity are met to hold is extended to circular pond.Advantage is that salinity has certain continuity.1), diffusion and the continuity of salinity maintain by water velocity the defect of this design:, water flow velocity is spent slowly, the vertical direction layering occurs, can not realize the horizontal direction layering.Water velocity is too fast, is unfavorable for that the laboratory animal gram flows and select the expression of applicable salinity; 2), because the two ends inflow equals the water yield effect of flow velocity in addition, the diffusion hindered of osmotic pressure itself, salinity gradient is realized causing experiment effect not obvious two kinds of mixed zones, result reliability is poor.
Summary of the invention
The object of the present invention is to provide a kind of classification dilution to set up the device of high continuous gradient salinity choice experiment, this device salinity changes sustainable, affected by current, animal ingestion etc. little, and experiment effect is remarkable.
For achieving the above object, the technical solution of the utility model is:
The device of high continuous gradient salinity choice experiment is set up in the classification dilution, it is characterized in that: this comprising of device salt pond and tank, the outlet pipe of changing salt pond is connected with the tank water inlet, changing toughened pail middle part, salt pond is fixed with lower than the outlet pipe of changing the salt pond end face, left and right is distributed with vertical direction agitator and horizontal direction agitator, tank has propeller near water inlet one end, and the fresh water water inlet pipe is arranged in tank, and fresh water water inlet pipe end is connected with the fresh water sparge pipe.
Scale is arranged on tank.
The fresh water sparge pipe is three grades of settings along tank water inlet direction, and fresh water sparge pipe endcapped, have hole for water spraying on it, and hole for water spraying and tank bottom surface angle are 30-45 °.
The beneficial effects of the utility model are:
1. realize the continuous variation in high salinity interval with dynamic equilibrium.
2. the swimming of osmotic pressure and aquatic animal, the behavioral activity such as ingest do not affect this distribution of the salinity.
3. the size of water velocity does not also affect the accuracy of experiment.
4. under dynamic equilibrium, can realize the long-term observation experiment.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing 1.
By putting into of seawater extract salt pond, be filled to and be no more than outlet pipe 5 positions by oral siphon 2, start Horizontal mixer 3 and vertical diving mixer 4, seawater extract starts to dissolve, and makes the seawater extract saturated solution; Then open oral siphon 2 and start water filling, open propeller 8 simultaneously, saturated solution enters tank 6 until fill with tank 6 by changing salt pond outlet pipe 5, open fresh water water inlet pipe 9, fresh water penetrates from fresh water spray-hole 10, promotes mixing of saturated solution and fresh water, when residual seawater element amount is change salt pond height at height at the bottom of bucket 20% the time, continue to add seawater extract, make its amount reach the 1/3-1/2 that bucket is high.The data of recording distance and salinity are then put into the experiment fish in tank, according to the hobby of experiment fish, determine the hobby salinity of experiment fish.
Claims (3)
1. the device of high continuous gradient salinity choice experiment is set up in the classification dilution, it is characterized in that: this device comprises chemical examination pond and tank (6), the outlet pipe (5) in chemical examination pond is connected with tank (6) water inlet (7), chemical examination pond toughened pail (1) middle part is fixed with the outlet pipe (5) lower than chemical examination pond end face, left and right is distributed with vertical direction agitator (4) and horizontal direction agitator (3), tank (6) has propeller (8) near water inlet (7) one ends, fresh water water inlet pipe (9) is arranged in tank (6), fresh water water inlet pipe end is connected with fresh water sparge pipe (10).
2. the device of high continuous gradient salinity choice experiment is set up in classification dilution according to claim 1, and it is characterized in that: tank has scale on (6).
3. the device of high continuous gradient salinity choice experiment is set up in classification dilution according to claim 1, it is characterized in that: fresh water sparge pipe (10) is three grades of settings along tank (6) water inlet direction, fresh water sparge pipe (10) endcapped, have hole for water spraying on it, hole for water spraying and tank (6) bottom surface angle is 30-45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202218774U CN203327738U (en) | 2013-04-27 | 2013-04-27 | Device for building high-continuous-gradient salinity selection test through grading dilution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202218774U CN203327738U (en) | 2013-04-27 | 2013-04-27 | Device for building high-continuous-gradient salinity selection test through grading dilution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203327738U true CN203327738U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013202218774U Withdrawn - After Issue CN203327738U (en) | 2013-04-27 | 2013-04-27 | Device for building high-continuous-gradient salinity selection test through grading dilution |
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| CN (1) | CN203327738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270994A (en) * | 2013-04-27 | 2013-09-04 | 中国水产科学研究院长江水产研究所 | Device and method for establishing high continuous gradient salinity selecting experiment through grading attenuation |
-
2013
- 2013-04-27 CN CN2013202218774U patent/CN203327738U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270994A (en) * | 2013-04-27 | 2013-09-04 | 中国水产科学研究院长江水产研究所 | Device and method for establishing high continuous gradient salinity selecting experiment through grading attenuation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131211 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |