CN110882911A - Fish passing channel for fishes with specific weight specifications - Google Patents
Fish passing channel for fishes with specific weight specifications Download PDFInfo
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- CN110882911A CN110882911A CN201811053264.8A CN201811053264A CN110882911A CN 110882911 A CN110882911 A CN 110882911A CN 201811053264 A CN201811053264 A CN 201811053264A CN 110882911 A CN110882911 A CN 110882911A
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- fish
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- passing channel
- fixing frame
- fish passing
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 264
- 239000000463 material Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 10
- 230000037396 body weight Effects 0.000 claims description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000012216 screening Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/60—Ecological corridors or buffer zones
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
The invention provides a fish passing channel for fishes with specific weight specifications, which comprises a fish passing channel and a screen arranged at two end ports of the fish passing channel through a connecting device, wherein the screen can open and close the fish passing channel, when the screen seals the opening of the fish passing channel, the screen is tightly connected with the fish passing channel through a fixing device, the screen is ensured to be tightly fixed on the fish passing channel, the mesh of the screen is square, the side length of the square is n, and the side length n of the square is determined according to the specification of the filtered fishes. In addition, the invention has the advantages of low cost, convenient use, labor saving and environmental protection.
Description
Technical Field
The invention relates to the technical field of fish passing channels, in particular to a fish passing channel for fishes with specific weight specifications.
Background
In fishery production, fish channels are often used in breeding lakes, reservoirs or ponds, and the fish channels are required to have a function of screening the weight specifications of fishes in some links. For example, the 'river irrigation and seedling reception' of a reservoir (pond) in the river is an important ecological fishery measure for protecting the biological diversity and the stability of a clustering structure of fishes and improving the economic benefit. In the fish breeding season, a large number of young fishes carried by river water enter the reservoir through the fish passage to grow, and at the moment, the fish passage is required to be provided with a reasonable screen size design, so that small-sized fishes outside the reservoir can freely enter the reservoir and large-sized fishes in a lake cannot escape. For another example, in "pond culture with circulating water", it is necessary to keep the water in the pond in a circulating state all the time, and the inlet and outlet channels of the pond must ensure that the water flow passes through freely, but the fish in the pond cannot escape, and at this time, the size of the screen of the inlet and outlet channels is designed according to the specification of the fish in the pond.
In practice, the design of the screen of the fish passing channel is usually more blind, if the size of the screen of the fish passing channel is designed to be too dense, the channel is easy to block and lose the function of passing the fish, and the size of the screen is too sparse, large-sized fish cultured artificially escapes, so that economic loss is caused. In practice, fish screening by means of fish channels is widely applied, but few and few screening functions of specific specifications can be really realized, and the screening functions are expensive and poor in availability if any.
Therefore, how to accurately design the size of the screen according to the weight specification of the fish becomes a restriction on fish passing channels and guarantee the stability of fishery production is a technical problem researched by the technical field personnel.
Disclosure of Invention
The invention aims to provide a fish passing channel for fishes with specific weight and specification, which solves the problem that the meshes of the existing fish passing channel are too large or too small, and further avoids the problem that the fish passing function is lost due to too dense screen meshes and the problem that large fishes escape.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a fish passing channel for fishes with specific weight specifications, which comprises a fish passing channel and a screen arranged at the ports of the two ends of the fish passing channel through a connecting device, wherein the screen can open and close the fish passing channel, and when the ports of the two ends of the fish passing channel are closed, the screen is fixed through a fixing deviceOn the fish passing channel, the mesh of the screen is square, and the side length of the square
Wherein a and b are constants, c = L/h, L is the standard fish body length, h is the standard fish body height, and W is the standard fish body weight.
Preferably, the fixing device comprises at least one T-shaped rivet fixed on the outer side of the fish passing channel and at least one annular buckle arranged on the periphery of the screen through a second rotating shaft, when the screen closes the fish passing channel, the T-shaped rivet is inserted into the annular buckle, the tail of the T-shaped rivet is connected with the outer side of the fish passing channel, and the head of the T-shaped rivet clamps the annular buckle.
Preferably, the head of the T-shaped rivet is distal from the screen relative to the tail of the T-shaped rivet.
Preferably, the connecting device comprises a first fixing frame and a second fixing frame which are respectively fixed on the screen and the fish passing channel, the first fixing frame and the second fixing frame are respectively provided with a through hole, and a first rotating shaft for rotating the screen is arranged in the through hole.
Preferably, the first fixing frame is connected with the through hole of the second fixing frame through a stud.
Preferably, still include the area hook rope, area hook rope one end with first mount is connected, and the other end is equipped with the crotch, just the crotch can with the screen cloth is connected.
Preferably, the screen is provided with an annular buckle, and when the screen is opened, the hook is connected with the annular buckle.
Preferably, the first fixing frame and the second fixing frame are fixed on the outer side of the fish passing channel and the screen mesh respectively through welding.
Preferably, the tail end of the T-shaped rivet is fixed to the outer circumference of the fish passing passage by welding.
Preferably, the material of the screen mesh is a polyvinyl chloride material.
The invention provides a fish passing channel for fishes with specific weight and specification, which comprises a fish passing channel, a screen arranged at two end ports of the fish passing channel through a connecting device, wherein the screen can open and close the fish passing channel, the screen is arranged on the fish passing channel through the connecting device, when the screen seals the opening of the fish passing channel, the screen is tightly connected with the fish passing channel through the fixing device, the screen is ensured to be tightly fixed on the fish passing channel, the mesh of the screen is square, the side length of the square is n, the side length n of the square is determined according to the specification calculation of the filtered fish, and the screen is arranged in this way, the fish above and below the target weight specification can be distinguished, fish above the target weight specification can be prevented from escaping, fish below the target weight specification can be guaranteed to freely pass through, and the function of screening fish with the weight specification limited by the fish passing channel is effectively achieved. In addition, the invention has the advantages of low cost, convenient use, labor saving and environmental protection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of a closed fish passageway for a fish of a particular size and weight, according to an exemplary embodiment;
fig. 2 is a schematic view of a fish passage opening of a fish of a particular size according to an exemplary embodiment.
In the figure: 1-rope with hook; 2-a first fixing frame; 3-passing through a fish channel; 4-a first rotating shaft; 5-a second fixing frame; 6-T type rivet; 7-annular buckle; 8-a second rotating shaft; 9-screen mesh.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of a closed fish passageway for a fish of a particular size and weight, according to an exemplary embodiment;
fig. 2 is a schematic view of a fish passage opening of a fish of a particular size according to an exemplary embodiment.
In the figure: 1-rope with hook; 2-a first fixing frame; 3-passing through a fish channel; 4-a first rotating shaft; 5-a second fixing frame; 6-T type rivet; 7-annular buckle; 8-a second rotating shaft; 9-screen mesh.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The fish passing channel for the fishes with the specific weight and the specific specification has the advantages that the fishes with the normal specification and the normal weight are left in the fish passing channel, so that the fishes with the normal weight and the normal specification continue to be left in water for normal growth, and the ecological balance of fishery is guaranteed.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1-2, the invention provides a fish passing channel for fish of a specific weight specification, which includes a fish passing channel 3, a screen 9 disposed at two end ports of the fish passing channel 3 through a connecting device, the screen 9 being capable of opening and closing the fish passing channel 3, when the screen 9 is opened, the screen 9 is disposed on the fish passing channel 3 through the connecting device, thereby avoiding the situation that the screen 9 falls off, when the screen 9 covers the opening of the fish passing channel 3 tightly, the screen 9 is fixedly connected with the fish passing channel 3 through a fixing device, so as to ensure that the screen 9 is fixedly fixed on the fish passing channel 3, the mesh of the screen 9 is square, the side length of the square is n, the side length n of the square is determined according to the specification of the filtered fish, and the calculating method is as follows:
the formula (1) is a relation between the fish body length and the fish body height (or body width), wherein L is the fish standard body length, h is the fish standard body height (or body width), namely the maximum length of the fish body in the longitudinal axis (or sagittal axis) direction, and c is a constant.
The formula (2) is a relational expression of fish body length and weight, wherein W is the standard fish weight, L is the standard fish body length, and a and b are constants.
Putting the body length L of the formula (1) into the formula (2) to obtain:
Because the sieve pores of the sieve net 9 are square, the maximum distance of the sieve pores for the fish to pass through is the diagonal length of the square sieve pores. At this time, h is the length of the diagonal line, and the side length of the square grid is
Namely:
in the formula (3), n is the side length of the square of the screen 9, a, b and c are all normal-ripened and can be obtained by fitting the formulas (1) and (2) with actual measurement data of the body length, the body weight and the body height (body width) of the fish, and W is the critical body weight of the fish to be filtered. That is, when fish having a weight of W (and above) restricted by the fish passage 3 cannot pass through, the side length of the mesh of the screen 9 should not be higher than n. It is to be noted that W and n have dimensions and correspond to each other in units, for example, when W is in units of grams, n is in units of millimeters.
If the fish passing channel 3 only needs one end to be opened, the other end is in a long-term closed state, and the sieve 9 of the fish passing channel 3, which needs to be closed for a long time, is fixed on the fish passing channel 3 through welding or other modes, so that the fish passing channel is convenient, quick and firm.
The fixing device comprises at least one T-shaped rivet 6 fixed on the outer side of the fish passing channel 3 and at least one annular buckle 7 arranged on the periphery of the screen 9 through a second rotating shaft 8, the T-shaped rivet 6 is inserted into the annular buckle 7, the tail of the T-shaped rivet 6 is connected with the outer side of the fish passing channel 3, the head of the T-shaped rivet 6 can be clamped on the annular buckle 7 arranged on the screen 9, the screen 9 can be ensured to firmly seal an opening of the fish passing channel 3, the tail of the T-shaped rivet 6 is a sharp part, and the head of the T-shaped rivet 6 is a part knocked by a hammer or other parts.
Wherein, the head of T type rivet 6 is kept away from screen cloth 9 for the afterbody of T type rivet 6, and 6 heads of T type rivet can chucking annular buckle 7 like this, avoid screen cloth 9 situation that appears suddenly and loosen, further guarantee the firm port of sealing fish passageway 3 of screen cloth 9.
Wherein, connecting device includes first mount 2, second mount 5, and first mount 2 is fixed to be set up on crossing fish passageway 3, and second mount 5 sets up on screen cloth 9, and first mount 2 is equipped with the through-hole respectively with second mount 5, and is equipped with first pivot 4 in the through-hole, and like this, when screen cloth 9 overturns from top to bottom along first pivot 4, avoids screen cloth 9 to break away from and crosses fish passageway 3.
According to the other scheme, the through holes of the first fixing frame 2 and the second fixing frame 5 are connected through the studs, the nuts are arranged on the studs, the studs are prevented from being separated from the through holes, meanwhile, when the screen 9 or the fish passing channel 3 is damaged, the studs are easy to detach and replace, and time and labor are saved.
In this embodiment, still including taking hook rope 1, taking hook rope 1 one end is connected with first mount 2, and the other end is equipped with the crotch, and the crotch can be connected with screen cloth 9, and simultaneously, taking hook rope 1 can adjust length according to actual conditions, and then guarantees that the cross-section of crossing fish passageway 3 is greater than 90 degrees with the contained angle of screen cloth 9, crosses fish passageway 3 like this and becomes the open mode, avoids screen cloth 9 to influence work.
Another mode of this embodiment is equipped with annular buckle 7 on the screen cloth 9, and when screen cloth 9 was opened, the crotch was connected with annular buckle 7, avoided the crotch to destroy screen cloth 9, extension screen cloth 9's life.
First mount 2, second mount 5 are respectively through welded fastening on crossing the outside of fish passageway 3, screen cloth 9, guarantee that first mount 2, the firm setting of second mount 5 are on crossing the outside of fish passageway 3, screen cloth 9.
The tail end of the T-shaped rivet 6 is fixed on the outer circumference of the fish channel 3 through welding, and the T-shaped rivet 6 and the fish channel 3 are combined into a whole in this way, so that the T-shaped rivet 6 is prevented from falling off.
The material of the screen mesh 9 is preferably a polyvinyl chloride material, and has good mechanical properties, the tensile strength of about 60MPa and the impact strength of 5-10 kJ/m; the polyvinyl chloride material is hard and poor in solubility, can only be dissolved in a few solvents such as cyclohexanone, dichloroethane and tetrahydrofuran, and is stable to organic and inorganic acids, alkali and salt, and the screen 9 has good stability in water and is not easily decomposed by substances in water.
When the invention restricts the passing of fishes with specific weight and specification, firstly, the fish passing channel 3 is arranged under the dike of the lake (or the pond) and communicated with the external water body and is positioned below the water surface. Then a screen 9 designed according to the weight specification of the fishes is arranged on the first fixing frame 2 of the fish passage 3, and the screen 9 is attached to the opening of the pipeline; and then the annular buckles 7 on the left side and the right side of the screen 9 are respectively sleeved on the T-shaped rivets on the two sides of the pipeline. Under the environment of unblocked water flow, the fishes above the target weight specification are limited, and the fishes below the target weight specification can freely pass through. When the fish specification is not required to be limited, firstly, the annular buckle 7 on the screen 9 is separated from the T-shaped rivet passing through the fish channel 3, and then the screen 9 is lifted and rotated along the first rotating shaft 4; then, two ropes with hooks are respectively used for hooking the annular buckles 7 on the screen meshes 9, so that the pipeline is in an 'open' state. According to the arrangement, the fish passing channel 3 provided by the invention can limit fish with specific weight specifications, can quickly switch between a limited state and a non-limited state, is low in cost, saves manpower, is green and environment-friendly, and improves the screening energy efficiency of the fish passing channel 3 on the weight specifications of the fish.
It should be noted that the terms "first", "second", etc. are not limited to a specific sequence, but are used to distinguish various components or functions, and the terms "upper" and "lower" are described in the state of fig. 1.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
The invention aims to provide a fish passing channel for fishes with specific weight and specification, which solves the problem that the meshes of the existing fish passing channel are too large or too small, and further avoids the problem that the fish passing function is lost due to too dense screen meshes and the problem that large fishes escape.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a fish passing channel for fishes with specific weight specifications, which comprises a fish passing channel and a screen arranged at the ports of the two ends of the fish passing channel through a connecting device, wherein the screen can open and close the fish passing channel, and when the ports of the two ends of the fish passing channel are closed, the screen is fixed through a fixing deviceOn the fish passing channel, the mesh of the screen is square, and the side length of the square
Wherein a and b are constants, c = L/h, L is the standard fish body length, h is the standard fish body height, and W is the standard fish body weight.
Preferably, the fixing device comprises at least one T-shaped rivet fixed on the outer side of the fish passing channel and at least one annular buckle arranged on the periphery of the screen through a second rotating shaft, when the screen closes the fish passing channel, the T-shaped rivet is inserted into the annular buckle, the tail of the T-shaped rivet is connected with the outer side of the fish passing channel, and the head of the T-shaped rivet clamps the annular buckle.
Preferably, the head of the T-shaped rivet is distal from the screen relative to the tail of the T-shaped rivet.
Preferably, the connecting device comprises a first fixing frame and a second fixing frame which are respectively fixed on the screen and the fish passing channel, the first fixing frame and the second fixing frame are respectively provided with a through hole, and a first rotating shaft for rotating the screen is arranged in the through hole.
Preferably, the first fixing frame is connected with the through hole of the second fixing frame through a stud.
Preferably, still include the area hook rope, area hook rope one end with first mount is connected, and the other end is equipped with the crotch, just the crotch can with the screen cloth is connected.
Preferably, the screen is provided with an annular buckle, and when the screen is opened, the hook is connected with the annular buckle.
Preferably, the first fixing frame and the second fixing frame are fixed on the outer side of the fish passing channel and the screen mesh respectively through welding.
Preferably, the tail end of the T-shaped rivet is fixed to the outer circumference of the fish passing passage by welding.
Preferably, the material of the screen mesh is a polyvinyl chloride material.
The invention provides a fish passing channel for fishes with specific weight and specification, which comprises a fish passing channel, a screen arranged at two end ports of the fish passing channel through a connecting device, wherein the screen can open and close the fish passing channel, the screen is arranged on the fish passing channel through the connecting device, when the screen seals the opening of the fish passing channel, the screen is tightly connected with the fish passing channel through the fixing device, the screen is ensured to be tightly fixed on the fish passing channel, the mesh of the screen is square, the side length of the square is n, the side length n of the square is determined according to the specification calculation of the filtered fish, and the screen is arranged in this way, the fish above and below the target weight specification can be distinguished, fish above the target weight specification can be prevented from escaping, fish below the target weight specification can be guaranteed to freely pass through, and the function of screening fish with the weight specification limited by the fish passing channel is effectively achieved. In addition, the invention has the advantages of low cost, convenient use, labor saving and environmental protection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The fish passing channel for the fishes with the specific weight and the specific specification has the advantages that the fishes with the normal specification and the normal weight are left in the fish passing channel, so that the fishes with the normal weight and the normal specification continue to be left in water for normal growth, and the ecological balance of fishery is guaranteed.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1-2, the invention provides a fish passing channel for fish of a specific weight specification, which includes a fish passing channel 3, a screen 9 disposed at two end ports of the fish passing channel 3 through a connecting device, the screen 9 being capable of opening and closing the fish passing channel 3, when the screen 9 is opened, the screen 9 is disposed on the fish passing channel 3 through the connecting device, thereby avoiding the situation that the screen 9 falls off, when the screen 9 covers the opening of the fish passing channel 3 tightly, the screen 9 is fixedly connected with the fish passing channel 3 through a fixing device, so as to ensure that the screen 9 is fixedly fixed on the fish passing channel 3, the mesh of the screen 9 is square, the side length of the square is n, the side length n of the square is determined according to the specification of the filtered fish, and the calculating method is as follows:
the formula (1) is a relation between the fish body length and the fish body height (or body width), wherein L is the fish standard body length, h is the fish standard body height (or body width), namely the maximum length of the fish body in the longitudinal axis (or sagittal axis) direction, and c is a constant.
The formula (2) is a relational expression of fish body length and weight, wherein W is the standard fish weight, L is the standard fish body length, and a and b are constants.
Putting the body length L of the formula (1) into the formula (2) to obtain:
Because the sieve pores of the sieve net 9 are square, the maximum distance of the sieve pores for the fish to pass through is the diagonal length of the square sieve pores. At this time, h is the length of the diagonal line, and the side length of the square grid is
Namely:
in the formula (3), n is the side length of the square of the screen 9, a, b and c are all normal-ripened and can be obtained by fitting the formulas (1) and (2) with actual measurement data of the body length, the body weight and the body height (body width) of the fish, and W is the critical body weight of the fish to be filtered. That is, when fish having a weight of W (and above) restricted by the fish passage 3 cannot pass through, the side length of the mesh of the screen 9 should not be higher than n. It is to be noted that W and n have dimensions and correspond to each other in units, for example, when W is in units of grams, n is in units of millimeters.
If the fish passing channel 3 only needs one end to be opened, the other end is in a long-term closed state, and the sieve 9 of the fish passing channel 3, which needs to be closed for a long time, is fixed on the fish passing channel 3 through welding or other modes, so that the fish passing channel is convenient, quick and firm.
The fixing device comprises at least one T-shaped rivet 6 fixed on the outer side of the fish passing channel 3 and at least one annular buckle 7 arranged on the periphery of the screen 9 through a second rotating shaft 8, the T-shaped rivet 6 is inserted into the annular buckle 7, the tail of the T-shaped rivet 6 is connected with the outer side of the fish passing channel 3, the head of the T-shaped rivet 6 can be clamped on the annular buckle 7 arranged on the screen 9, the screen 9 can be ensured to firmly seal an opening of the fish passing channel 3, the tail of the T-shaped rivet 6 is a sharp part, and the head of the T-shaped rivet 6 is a part knocked by a hammer or other parts.
Wherein, the head of T type rivet 6 is kept away from screen cloth 9 for the afterbody of T type rivet 6, and 6 heads of T type rivet can chucking annular buckle 7 like this, avoid screen cloth 9 situation that appears suddenly and loosen, further guarantee the firm port of sealing fish passageway 3 of screen cloth 9.
Wherein, connecting device includes first mount 2, second mount 5, and first mount 2 is fixed to be set up on crossing fish passageway 3, and second mount 5 sets up on screen cloth 9, and first mount 2 is equipped with the through-hole respectively with second mount 5, and is equipped with first pivot 4 in the through-hole, and like this, when screen cloth 9 overturns from top to bottom along first pivot 4, avoids screen cloth 9 to break away from and crosses fish passageway 3.
According to the other scheme, the through holes of the first fixing frame 2 and the second fixing frame 5 are connected through the studs, the nuts are arranged on the studs, the studs are prevented from being separated from the through holes, meanwhile, when the screen 9 or the fish passing channel 3 is damaged, the studs are easy to detach and replace, and time and labor are saved.
In this embodiment, still including taking hook rope 1, taking hook rope 1 one end is connected with first mount 2, and the other end is equipped with the crotch, and the crotch can be connected with screen cloth 9, and simultaneously, taking hook rope 1 can adjust length according to actual conditions, and then guarantees that the cross-section of crossing fish passageway 3 is greater than 90 degrees with the contained angle of screen cloth 9, crosses fish passageway 3 like this and becomes the open mode, avoids screen cloth 9 to influence work.
Another mode of this embodiment is equipped with annular buckle 7 on the screen cloth 9, and when screen cloth 9 was opened, the crotch was connected with annular buckle 7, avoided the crotch to destroy screen cloth 9, extension screen cloth 9's life.
First mount 2, second mount 5 are respectively through welded fastening on crossing the outside of fish passageway 3, screen cloth 9, guarantee that first mount 2, the firm setting of second mount 5 are on crossing the outside of fish passageway 3, screen cloth 9.
The tail end of the T-shaped rivet 6 is fixed on the outer circumference of the fish channel 3 through welding, and the T-shaped rivet 6 and the fish channel 3 are combined into a whole in this way, so that the T-shaped rivet 6 is prevented from falling off.
The material of the screen mesh 9 is preferably a polyvinyl chloride material, and has good mechanical properties, the tensile strength of about 60MPa and the impact strength of 5-10 kJ/m; the polyvinyl chloride material is hard and poor in solubility, can only be dissolved in a few solvents such as cyclohexanone, dichloroethane and tetrahydrofuran, and is stable to organic and inorganic acids, alkali and salt, and the screen 9 has good stability in water and is not easily decomposed by substances in water.
When the invention restricts the passing of fishes with specific weight and specification, firstly, the fish passing channel 3 is arranged under the dike of the lake (or the pond) and communicated with the external water body and is positioned below the water surface. Then a screen 9 designed according to the weight specification of the fishes is arranged on the first fixing frame 2 of the fish passage 3, and the screen 9 is attached to the opening of the pipeline; and then the annular buckles 7 on the left side and the right side of the screen 9 are respectively sleeved on the T-shaped rivets on the two sides of the pipeline. Under the environment of unblocked water flow, the fishes above the target weight specification are limited, and the fishes below the target weight specification can freely pass through. When the fish specification is not required to be limited, firstly, the annular buckle 7 on the screen 9 is separated from the T-shaped rivet passing through the fish channel 3, and then the screen 9 is lifted and rotated along the first rotating shaft 4; then, two ropes with hooks are respectively used for hooking the annular buckles 7 on the screen meshes 9, so that the pipeline is in an 'open' state. According to the arrangement, the fish passing channel 3 provided by the invention can limit fish with specific weight specifications, can quickly switch between a limited state and a non-limited state, is low in cost, saves manpower, is green and environment-friendly, and improves the screening energy efficiency of the fish passing channel 3 on the weight specifications of the fish.
It should be noted that the terms "first", "second", etc. are not limited to a specific sequence, but are used to distinguish various components or functions, and the terms "upper" and "lower" are described in the state of fig. 1.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The fish passing channel for the fishes with the specific weight and the specific specification is characterized by comprising a fish passing channel (3) and a screen (9) arranged at ports at two ends of the fish passing channel (3) through a connecting device, wherein the screen (9) can be opened and closed to the fish passing channel (3), when the ports at two ends of the fish passing channel (3) are closed, the screen (9) is fixed on the fish passing channel (3) through a fixing device, meshes of the screen (9) are square, and the side length of the square is long
Wherein a and b are constants, c = L/h, L is the standard fish body length, h is the standard fish body height, and W is the standard fish body weight.
2. The fish passage way for fish with specific weight and size as claimed in claim 1, wherein the fixing device comprises at least one T-shaped rivet (6) fixed on the outer side of the fish passage way (3), at least one annular buckle (7) arranged on the periphery of the screen (9) through a second rotating shaft (8), when the screen (9) closes the fish passage way (3), the T-shaped rivet (6) is inserted into the annular buckle (7), the tail part of the T-shaped rivet (6) is connected with the outer side of the fish passage way (3), and the head part of the T-shaped rivet (6) is clamped with the annular buckle (7).
3. A fish passage way for fish of a certain weight specification according to claim 2, characterized in that the head of the T-shaped rivet (6) is far away from the screen (9) relative to the tail of the T-shaped rivet (6).
4. The fish passage way of fish with specific weight and specification according to claim 1, wherein the connecting device comprises a first fixing frame (2) and a second fixing frame (5) which are respectively fixed on the screen (9) and the fish passage way (3), the first fixing frame (2) and the second fixing frame (5) are respectively provided with a through hole, and a first rotating shaft (4) for rotating the screen (9) is arranged in the through hole.
5. The fish passage channel for fish with specific weight and specification according to claim 4, wherein the through holes of the first fixing frame (2) and the second fixing frame (5) are connected through a stud.
6. The fish passage way for the fish with the specific weight and specification as claimed in claim 4, further comprising a rope (1) with a hook, wherein one end of the rope (1) with a hook is connected with the first fixing frame (2), the other end of the rope with a hook is provided, and the hook can be connected with the screen (9).
7. A fish passage way for fish of a certain weight and specification according to claim 6, characterized in that the screen (9) is provided with a ring-shaped buckle (7), and when the screen (9) is opened, the hook can be connected with the ring-shaped buckle (7).
8. The fish passage way for fish with specific weight specifications as claimed in claim 5, characterized in that the first fixing frame (2) and the second fixing frame (5) are respectively fixed on the screen (9) and outside the fish passage way (3) by welding.
9. The fish passage channel for fish with specific weight specification according to claim 2, wherein the tail end of the T-shaped rivet (6) is fixed on the outer circumference of the fish passage channel (3) by welding.
10. A fish passageway for fish of a specific weight specification according to claim 1, wherein the material of the mesh (9) is a polyvinyl chloride material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811053264.8A CN110882911A (en) | 2018-09-10 | 2018-09-10 | Fish passing channel for fishes with specific weight specifications |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811053264.8A CN110882911A (en) | 2018-09-10 | 2018-09-10 | Fish passing channel for fishes with specific weight specifications |
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| CN110882911A true CN110882911A (en) | 2020-03-17 |
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| CN201811053264.8A Pending CN110882911A (en) | 2018-09-10 | 2018-09-10 | Fish passing channel for fishes with specific weight specifications |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737746A (en) * | 2021-08-03 | 2021-12-03 | 肖来娣 | River dam gate capable of protecting fish and animals |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205226923U (en) * | 2015-12-15 | 2016-05-11 | 四川谛维铱电子有限公司 | Anti -electromagnetic radiation electronic energy -saving lamp |
| CN205596902U (en) * | 2016-04-28 | 2016-09-28 | 铜仁市永泰成农业科技发展有限公司 | Farming systems is eaten to automatic feeding of giant salamander of area control |
| CN206275706U (en) * | 2016-08-27 | 2017-06-27 | 薛传亭 | A kind of Novel urine collection device for checking clinic |
| CN206450646U (en) * | 2017-01-12 | 2017-08-29 | 天津信兴工程质量检测有限公司 | Building materials noninflammability laboratory structure |
| RU180836U1 (en) * | 2017-05-29 | 2018-06-28 | Александр Семёнович Курилов | FISH PROTECTION DEVICE |
| CN208824982U (en) * | 2018-09-10 | 2019-05-07 | 中国水产科学研究院淡水渔业研究中心 | A kind of fish channel excessively of particular volume weight-normality lattice fish |
-
2018
- 2018-09-10 CN CN201811053264.8A patent/CN110882911A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205226923U (en) * | 2015-12-15 | 2016-05-11 | 四川谛维铱电子有限公司 | Anti -electromagnetic radiation electronic energy -saving lamp |
| CN205596902U (en) * | 2016-04-28 | 2016-09-28 | 铜仁市永泰成农业科技发展有限公司 | Farming systems is eaten to automatic feeding of giant salamander of area control |
| CN206275706U (en) * | 2016-08-27 | 2017-06-27 | 薛传亭 | A kind of Novel urine collection device for checking clinic |
| CN206450646U (en) * | 2017-01-12 | 2017-08-29 | 天津信兴工程质量检测有限公司 | Building materials noninflammability laboratory structure |
| RU180836U1 (en) * | 2017-05-29 | 2018-06-28 | Александр Семёнович Курилов | FISH PROTECTION DEVICE |
| CN208824982U (en) * | 2018-09-10 | 2019-05-07 | 中国水产科学研究院淡水渔业研究中心 | A kind of fish channel excessively of particular volume weight-normality lattice fish |
Non-Patent Citations (1)
| Title |
|---|
| 张显理， 黄全福: "鱼类生态学原理", vol. 1995, 31 August 1995, 宁夏人民教育出版社, pages: 75 - 76 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737746A (en) * | 2021-08-03 | 2021-12-03 | 肖来娣 | River dam gate capable of protecting fish and animals |
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