CN211849319U - Spiral roller for grading fishway - Google Patents

Abstract

The utility model discloses a spiral roller for grading fishways, which comprises an inner cylinder, an outer spiral blade, an inner spiral blade and a rotating shaft, wherein the upper end of the rotating shaft is rotationally connected with a fixed rod of an upstream grading tank through a rotating bearing I, and the lower end of the rotating shaft is rotationally connected with a fixed rod of a downstream grading tank through a rotating bearing I; the inner spiral blades and the outer spiral blades have opposite rotating directions, two ends of the inner cylinder extend out of the outer cylinder, and the lower end of the inner cylinder is immersed in water. The utility model discloses can make double-deck anti-spiral cylinder rotate with the help of the impact of upper reaches flood peak, make the fish move about to the hierarchical pond of upper reaches with the help of the lift of fishway self, can need not to consider the hobby velocity of flow of fish, can also cooperate external drive to make the axis of rotation rotate when the flood peak is not enough in the upper reaches, the fast replenishment upper reaches water level, automatic and electronic combination realizes defeated fish, clean energy-conserving, and be favorable to the defeated migration and the exchange of upper and lower trip organic matter, the residual water still can attract the shoal of fish to be.

Description

Spiral roller for grading fishway

Technical Field

The utility model relates to a hydraulic junction engineering technical field, concretely relates to spiral cylinder for hierarchical fishway.

Background

At present, the fishways are various in types, mainly including technical fishways such as pool type fishways, baffle type fishways, vertical seam type fishways and ecological fishways, the design targets of the fishways are often single, mainly aiming at two main economic fishes or national key protective fishes, but dozens of fishes or even hundreds of fishes generally exist in a natural river water ecological system, and the various fishes have different migration periods and migration flow rates, so that the traditional fishways have great limitations.

For the problem that the migration velocity of solving the fish is different, application number is 201520844111.0, the utility model is named as the chinese utility model patent of the ecological fishway that has multistage velocity of flow passageway, this fishway crosses the fish passageway by fish pond, low velocity of flow, well velocity of flow crosses the fish passageway, the high velocity of flow crosses the fish passageway and constitutes. The fish channels of three different flow rates all form in the fish pond, and the extending direction also all keeps unanimous with the rivers direction. However, this solution has the following problems:

1. the slope of the bottom slope of the ecological fishway is slow, the water head is required to be small, the occupied area is large, and therefore the applicability in engineering is poor.

2. The scheme does not solve the problems of transportation and exchange of organic substances in upstream and downstream, and attention should be paid to ecological environment protection and water environment protection.

3. The fishway is not suitable for migration requirements of various fishes, and the fishway which has wide inclusion and high fish conveying efficiency is objectively needed by ecological community characteristics of the fishes so as to meet the migration requirements of the various fishes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect that above-mentioned technique exists, providing a spiral cylinder for hierarchical fishway, utilizing the screw pump principle, can realize the automatic function mode that combines together with electronic, make the fish with the help of the lift migration of fishway self, cross the fish efficient, do benefit to the migration and the exchange of upstream and downstream organic matter, solved the migration difficulty problem of fish.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a spiral roller for classifying fishways is arranged between an upstream classifying pool and a downstream classifying pool and comprises an inner cylinder, an outer spiral blade, an inner spiral blade and a rotating shaft, wherein the upper end of the rotating shaft is rotatably connected with a fixed rod of the upstream classifying pool through a first rotating bearing, and the lower end of the rotating shaft is rotatably connected with a fixed rod of the downstream classifying pool through a first rotating bearing; the inner helical blade is fixedly connected to the rotating shaft, the inner barrel is fixedly connected to the inner helical blade, the outer helical blade is fixedly connected to the outer side wall of the inner barrel, the outer barrel is fixedly connected to the outer helical blade, the inner helical blade and the outer helical blade are opposite in rotating direction, two ends of the inner barrel extend out of the outer barrel, and the lower end of the inner barrel is immersed in water.

Preferably, the number of the blade heads of the outer helical blades is 3, namely, the blades are arranged at intervals of 120 degrees, and the number of the blade heads of the inner helical blades is 2, namely, the blades are arranged at intervals of 180 degrees, and the blades are arranged in a staggered mode.

Preferably, the diameter of the rotating shaft, the diameter of the inner helical blade and the diameter of the outer helical blade can be selected to be 1: 4: 6.

the inner and outer spiral blades with opposite rotation directions rotate integrally, so that the water flow directions in the inner barrel and the outer barrel are opposite, the outer spiral blade can be impacted by an upstream water head to drive the inner barrel and the inner spiral blade to rotate, fish in a downstream grading pond is automatically conveyed to an upstream grading pond, an external driving device can be designed to drive the rotating shaft to rotate, and when the upstream water level is insufficient, the inner barrel, the outer barrel and the spiral blade are driven to rotate, so that the electric fish conveying is realized.

Furthermore, the grading ponds are sequentially provided with a plurality of stages in the water flow direction, adjacent upstream grading ponds and downstream grading ponds are separated by partition walls, and the heights of the partition walls are sequentially reduced along the water flow direction;

the partition wall is provided with a water through hole, the water through hole extends outwards to the upper end of the outer barrel, water in the upstream grading pond flows into the outer barrel through the water through hole, water flow impacts the outer spiral blade to drive the inner barrel, the inner spiral blade and the rotating shaft to rotate together, under the action of the inner spiral blade, water in the downstream grading pond flows to the upstream grading pond through the inner barrel, and fish in the downstream grading pond enters the inner barrel from the lower end of the inner barrel and enters the upstream grading pond from the upper end of the inner barrel.

The water in the upstream grading pond flows into the outer barrel through the water through port, the water flow impacts the outer spiral blades to drive the inner barrel, the inner spiral blades and the rotating shaft to rotate together, under the action of the inner spiral blades, the water in the downstream grading pond flows to the upstream grading pond through the inner barrel, the fish in the downstream grading pond enters the inner barrel from the lower end of the inner barrel and enters the upstream grading pond from the upper end of the inner barrel along with the rotation of the inner spiral blades, and therefore the water in the upstream grading pond and the downstream grading pond are circularly exchanged, and the transport and exchange of upstream and downstream organic matters are achieved.

Preferably, the spiral roller is obliquely arranged, the inclination angle is preferably 30-40 degrees, and automatic fish conveying without additional power is realized to the maximum extent.

Furthermore, a first straight bevel gear is sleeved at the upper end of the rotating shaft, a fixing rod of the upstream classification pool is arranged on the fixing device, a second straight bevel gear is arranged on the fixing device and meshed with the first straight bevel gear, and the second straight bevel gear is driven to rotate by a main motor arranged on the fixing device. The rotary shaft is driven to rotate by an external driving device.

Further, fixing device includes the support cylinder, a supporting bench has set firmly in the support cylinder, main motor sets up on a supporting bench, the output shaft of main motor sets up, and it is parallel with the central line of support cylinder, be connected with the gear on the output shaft, the top of main motor is provided with rotatory urceolus, the space has between rotatory urceolus bottom and the main motor, rotatory urceolus bottom has the bellied cavity that makes progress, the tooth's socket has on the cavity inner wall, the gear on the main motor output shaft is located this cavity, and the tooth's socket meshing of gear and cavity, the motor drives rotatory urceolus and rotates, the tray has been linked firmly on the lateral wall of rotatory urceolus, two fixed cover of straight bevel gear are established on rotatory urceolus lateral wall and are supported on the tray, main.

Preferably, the main motor output shaft is sleeved with a pressure bearing, and the pressure bearing is positioned in a gap between the bottom of the rotary outer cylinder and the main motor. The pressure bearing bears the pressure on the rotary outer cylinder on the main motor, so that the pressure on the output shaft of the main motor is reduced, the rotary outer cylinder can be prevented from shaking during rotation, and the rotation of the rotary outer cylinder and the rotation of the output shaft are not influenced.

Preferably, the upper end of the inner cylinder is of a bell mouth structure with an opening facing outwards. The angle of the bell mouth outlet is slightly inclined to the position below the horizontal line, so that the fishes can conveniently fall into the upstream grading pond from the downstream grading pond through the inner barrel.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses can make double-deck anti-spiral cylinder rotate with the help of the impact of upper reaches flood peak, make the fish move about to the hierarchical pond of upper reaches with the help of the lift of fishway self, can need not to consider the hobby velocity of flow of fish, can also cooperate external drive to make the axis of rotation rotate when the flood peak is not enough in the upper reaches, the fast replenishment upper reaches water level, automatic and electronic combination realizes defeated fish, clean energy-conserving, and be favorable to the defeated migration and the exchange of upper and lower trip organic matter, the residual water still can attract the shoal of fish to be.

Drawings

FIG. 1 shows the overall structure of a staged fishway;

FIG. 2 shows the structure of an upstream staging pool;

FIG. 3 shows the structure of the screw structure and the fixing means;

FIG. 4 shows a structure of the upper end of the spiral structure;

FIG. 5 shows the structure of the lower end of the spiral structure;

FIG. 6 shows the structural connection of the truncated cone moving up and down, wherein 6a shows the structure of the truncated cone after moving down, wherein the projection does not extend out of the rotary outer cylinder, and 6b shows the structure of the truncated cone after moving up, wherein the projection extends out of the rotary outer cylinder and is fixed with a straight bevel gear II;

FIG. 7 is a connecting structure of a second slide rail and a slide holder;

FIG. 8 shows the connection of the lugs to the outer rotary cylinder, with the lugs in FIG. 8a not connected to the outer rotary cylinder and the lugs in FIG. 8b extending outside the outer rotary cylinder;

FIG. 9 shows the structure of the bump sliding up and down on the first slide rail of the circular truncated cone, wherein 9a the bump is located at the top end of the first slide rail, and 9b the bump is located at the bottom end of the first slide rail;

fig. 10 shows a connecting structure of a boss and a fixing block on a carrier;

FIG. 11 shows an exploded view configuration of the mobile device;

FIG. 12 shows the working principle of the water level detection and electric device;

FIG. 13 shows a connection structure between the top of the bump and the annular suspension stage;

figure 14 shows the configuration of the shoe after the cam is attached to the annular suspension platform.

In the figure: 10-helical structure, 11-inner cylinder, 12-outer cylinder, 13-outer helical blade, 14-inner helical blade, 15-bell mouth, 16-rotating shaft, 21-rotating bearing I, 22-fixed rod, 23-supporting cylinder, 24-straight bevel gear I, 25-straight bevel gear II, 251-tray, 252-round table body, 253-carrying table, 254-boss, 2551-lug, 2552-sliding support, 2553-second sliding rail, 2554-bayonet, 2555-hole, 2556-circular rotating disc, 2557-annular suspension table, 2558-first sliding rail, 2559-fixed groove, 256-fixed block, 257-gap, 258-cavity, 259-pressure bearing, 26-supporting table, 27-moving device, 2701-convex strip, 2702-moving rod, 2703-tooth socket, 2704-gear, 2705-fixed station, 2706-bolt, 2707-groove, 2708-guardrail, 2709-rotary bearing II, 28-rotary outer cylinder, 30-trash rack, 40-water inlet, 50-overflow port, 60-water level detection and electric device, 61-liquid level sensor, 62-single chip, 63-main motor, 631-output shaft, 632-gear, 64-waterproof insulated wire, 6401-output waterproof insulated wire I, 6402-output waterproof insulated wire II, 65-servo motor, 70-partition wall, 80-classification pool.

Detailed Description

The technical scheme of the double-layer reverse spiral type grading fishway of the utility model is further explained with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and are illustrations of the present invention, not limitations of the present invention, and any schemes after simple conversion of the present invention all belong to the protection scope of the present invention.

Referring to fig. 1-9, in an embodiment of the present invention, a double-layer reverse spiral type grading fishway includes a plurality of grading ponds 80 arranged in sequence along a water flow direction, and the adjacent upstream grading pond and the downstream grading pond are separated by a partition wall 70, and the height of the partition wall decreases gradually along the water flow direction.

The installation elevation of the fishway is designed according to hydrological data of a fish migration season, the installation inclination angle is preferably 30-40 degrees, and automatic fish transportation without additional power is realized to the maximum extent.

A spiral structure 10 is arranged between the upstream grading tank and the downstream grading tank, the upper end of the spiral structure is supported on a fixing device through a fixing rod 22, the fixing device is arranged in the upstream grading tank, and the lower end of the spiral structure is supported in the downstream grading tank through the fixing rod 22; the spiral structure 10 comprises an inner cylinder 11, an outer cylinder 12, an outer spiral blade 13, an inner spiral blade 14 and a rotating shaft 16, wherein the upper end of the rotating shaft 16 is rotatably connected with a fixed rod of an upstream classification pool through a first rotating bearing 21, and the lower end of the rotating shaft 16 is rotatably connected with a fixed rod of a downstream classification pool through a first rotating bearing 21; the inner helical blade is fixedly connected to the rotating shaft, the inner barrel is fixedly connected to the inner helical blade, the outer helical blade is fixedly connected to the outer side wall of the inner barrel, the outer barrel is fixedly connected to the outer helical blade, the inner helical blade and the outer helical blade are opposite in rotating direction, two ends of the inner barrel extend out of the outer barrel, and the lower end of the inner barrel is immersed in water.

The diameter of the rotating shaft, the diameter of the inner spiral blade and the diameter of the outer spiral blade can be selected to be 1: 4: 6. the number of the blade heads of the outer spiral blades is 3, namely, the outer spiral blades are arranged in a group at intervals of 120 degrees, and the number of the blade heads of the inner spiral blades is 2, namely, the inner spiral blades are arranged in a group at intervals of 180 degrees and are arranged in a staggered mode.

A water through hole 40 is formed in the partition wall, the water through hole extends outwards to the upper end of the outer barrel, water in the upstream grading pond flows into the outer barrel through the water through hole, water flow impacts the outer spiral blade to drive the inner barrel, the inner spiral blade and the rotating shaft to rotate together, under the action of the inner spiral blade, water in the downstream grading pond flows to the upstream grading pond through the inner barrel, fish in the downstream grading pond enters the inner barrel from the lower end of the inner barrel and enters the upstream grading pond from the upper end of the inner barrel along with the rotation of the inner spiral blade, and therefore water in the upstream grading pond and the downstream grading pond is circularly exchanged, and the transfer and exchange of upstream and downstream organic matters are achieved.

In this embodiment, the stainless steel trash rack 30 is disposed at the water inlet to filter impurities in water and prevent the impurities from entering the outer cylinder and winding with the helical blades.

In this embodiment, the overflow port 50 is formed on the side wall of the classifying pool, and the height of the overflow port of each classifying pool can be set to control the highest water level of each classifying pool, so that the redundant water directly flows to the downstream classifying pool.

In this embodiment, the upper end of the inner cylinder is designed into a bell mouth 15 with an outward opening, and the angle of the outlet of the bell mouth is slightly inclined below the horizontal line, so that the fish can conveniently fall into the upstream classification pool from the downstream classification pool through the inner cylinder.

In order to prevent the water level in the upstream classifying pool from being not high enough to flow into the outer cylinder through the water through port 40 and drive the outer spiral blades to rotate when the upstream water head is insufficient, a straight bevel gear I24 is sleeved on the rotating shaft, a straight bevel gear II 25 is arranged on the fixing device and meshed with the straight bevel gear II, the straight bevel gear II is driven to rotate by a main motor arranged on the fixing device to drive the straight bevel gear I and the rotating shaft to rotate, the rotating shaft drives the inner spiral blades to rotate, and water in the downstream classifying pool is pumped into the upstream classifying pool to supplement the water level in the upstream classifying pool.

Specifically, the fixing device comprises a supporting cylinder 23, a supporting table 26 is fixedly arranged in the supporting cylinder, a main motor is arranged on the supporting table, an output shaft 631 of the main motor 63 is arranged upward and is parallel to the central line of the supporting cylinder, a gear 632 is connected to the output shaft, a rotary outer cylinder 28 is arranged above the main motor, a gap 257 is formed between the bottom of the rotary outer cylinder 28 and the main motor, a cavity 258 protruding upwards is formed in the bottom end of the rotary outer cylinder, a tooth groove is formed in the inner wall of the cavity, the gear on the output shaft of the main motor is located in the cavity and meshed with the tooth groove of the cavity, the motor drives the rotary outer cylinder to rotate, a tray 251 is fixedly connected to the outer side wall of the rotary outer cylinder, a straight bevel gear two 25 is fixedly sleeved on the outer side wall of the rotary outer cylinder and is supported.

In order to prevent the rotary outer cylinder from shaking when rotating and reduce the pressure on the output shaft of the main motor, a pressure bearing 259 is sleeved on the output shaft of the main motor and is positioned in a gap between the bottom of the rotary outer cylinder and the main motor.

In order to automatically detect the upstream water level, a water level detection and electric device 60 is arranged in the upstream grading tank, in order to automatically start a main motor when the upstream water level is insufficient, a circular table body 252 is arranged in the rotary outer cylinder, the bottom end of the circular table body is fixedly connected with a carrying platform 253, and a boss 254 which is arranged in a cross shape is arranged on the outer side wall of the carrying platform; the inner wall of the rotary outer barrel is integrally connected with four fixing blocks 256 which are arranged in a cross shape, each fixing block is provided with a vertical sliding groove, a boss is arranged corresponding to the fixing block, and the boss is arranged in the sliding groove of the fixing block in a sliding manner, as shown in fig. 10; a plurality of first sliding rails 2558 are arranged on the outer surface of the circular truncated cone body, when the circular truncated cone body is observed downwards along the axis direction of the circular truncated cone body, all the first sliding rails are distributed in a radial shape, each sliding rail is connected with a convex block 2551 in a sliding mode, a fixing groove 2559 is arranged at the top of each convex block, as shown in fig. 9, 13 and 14, a bayonet 2554 is arranged on a straight bevel gear II, and an orifice 2555 is arranged on the side wall of a rotary outer cylinder connected with the straight bevel gear II; a plurality of annular hanging tables 2557 are fixedly connected to the inner side wall of the rotary outer cylinder above the orifice, a plurality of second sliding rails 2553 are slidably connected to the annular hanging tables, sliding supports 2552 are slidably connected to the second sliding rails, the sliding supports are connected with the tops of the lugs, and the moving device can drive the circular table body to move up and down in the rotary outer cylinder; when the moving device drives the circular truncated cone to move upwards, the sliding support moves on the second sliding rail in the direction far away from the center of the rotary outer cylinder, meanwhile, the convex block on the circular truncated cone slides downwards to the bottom end of the circular truncated cone along the first sliding rail, penetrates through the orifice of the rotary outer cylinder and extends into the bayonet of the straight bevel gear II, and the circular truncated cone, the rotary outer cylinder and the straight bevel gear II are fixedly connected together; when the moving device drives the circular truncated cone to move downwards, the sliding support moves towards the direction close to the center of the rotary outer cylinder on the second slide rail, and meanwhile, the convex block on the circular truncated cone slides to the top end of the circular truncated cone along the first slide rail.

As shown in fig. 7, 13 and 14, the top of the protrusion is fixedly connected with a fixing groove 2559, the lower end of the sliding support 1552 is clamped in a sliding groove of the fixing groove, the upper end of the sliding support is slidably connected in a second sliding rail 2553, the second sliding rail is fixedly connected in a sliding groove of the annular suspension table 2557, and the outer edge of the annular suspension table is fixedly connected in the inner wall of the rotary outer cylinder.

As shown in fig. 11, the moving device 27 includes a convex bar 2701, a moving gear 2704, a moving rod 2702, a fixing table 2705, a bolt 2706, a tooth socket 2703, a groove 2707 and a guardrail 2708, two convex bars are symmetrically arranged on the outer surface of the moving rod, the two convex bars are arranged along the direction parallel to the axis of the moving rod, and a plurality of tooth sockets are arranged on the moving rod along the length direction;

the fixed stations are fixed on the guardrail 2708, the guardrail 2708 is fixedly connected to the top end of the support cylinder 23, the fixed stations 2705 are provided with two fixed stations, each of the two fixed stations is provided with a semicircular groove, the arc top of each semicircular groove is provided with a groove, the two fixed stations are fixedly connected together through a bolt to form a vertical circular through groove in a surrounding manner, a moving rod is connected into the circular through groove through a convex strip sliding clamp, a through groove is formed in one of the fixed stations in a direction perpendicular to the moving rod, a moving gear is arranged in the through groove and connected onto an output shaft of the servo motor 65, and the moving gear is meshed with a tooth groove in the moving rod; the lower end of the moving rod is sleeved on an inner ring of the second rotating bearing 2709, an outer ring of the second rotating bearing is connected with a circular turntable 2556 fixedly connected to the top end of the circular truncated cone, and the second rotating bearing and the circular turntable ensure that the moving device is connected with the circular truncated cone, so that the circular truncated cone is driven to move up and down, and the moving device is ensured not to influence the rotation of the circular truncated cone.

The water level detection and electric device 60 comprises a liquid level sensor 61, an input waterproof insulated wire 64, a single chip microcomputer 62, a first output waterproof insulated wire 6401, a second output waterproof insulated wire 6402, a main motor 63 and a servo motor 65, wherein the liquid level sensor 61 is vertically arranged in the upstream classification tank 80, the input end of the single chip microcomputer is connected with the liquid level sensor 61 through the input waterproof insulated wire 64, the output end of the single chip microcomputer is connected with the main motor through the first output waterproof insulated wire 6401, the output end of the single chip microcomputer is connected with the servo motor through the second output waterproof insulated wire 6402, and the single chip microcomputer is arranged in a support cylinder.

As shown in fig. 12, the liquid level sensor adopts an HM21F lightning protection liquid level transmitter, the detection end of the liquid level sensor is located below the water surface, the liquid level sensor 61 detects the water level in the upstream classification pool in real time, the liquid level sensor 61 transmits the voltage value under the corresponding water level to the single chip microcomputer 62 through a waterproof insulated wire 64, and the single chip microcomputer 62 compares the voltage value transmitted by the liquid level sensor 61 in real time.

The single chip microcomputer adopts stm32F103VET6, the motor drive adopts BTN, and the main motor adopts a direct current gear motor. The liquid level sensor is vertically arranged in the grading tank, the input end of the singlechip is connected with the liquid level sensor through a waterproof insulated wire, the output end of the singlechip is respectively connected with the two motors through two waterproof insulated wires in a driving mode, and the main motor and the servo motor are controlled to be started and stopped.

The utility model discloses a theory of operation is: the water in the upstream grading pond flows through the trash rack and the water through port, flows down through the outer spiral blades, the water through port extends to the upper end of the outer barrel, the water in the upstream grading pond flows into the outer barrel through the water through port, the water flow impacts the outer spiral blades to drive the inner barrel, the inner spiral blades and the rotating shaft to rotate together, under the action of the inner spiral blades, the water in the downstream grading pond flows to the upstream grading pond through the inner barrel, the fish in the downstream grading pond enters the inner barrel from the lower end of the inner barrel, and enters the upstream grading pond from the upper end of the inner barrel along with the rotation of the inner spiral blades, so that the water in the upstream grading pond and the water in the downstream grading pond are circularly exchanged, and the transportation and exchange of upstream and downstream organic.

When the liquid level sensor 61 detects that the water level value of the upstream grading pond is not high, the servo motor 65 is started by the singlechip 62, the servo motor drives the moving gear to rotate, the moving rod 2702 rises along the groove 2707 to drive the circular truncated cone to move upwards in the sliding rail of the fixed block, the top end of the circular truncated cone enters a circular hole formed by the surrounding of the second sliding rail, along with the continuous upward movement of the circular truncated cone, the circular truncated cone pushes the sliding support to move on the second sliding rail, meanwhile, the lug on the circular truncated cone slides downwards to the bottom end of the circular truncated cone along the first sliding rail, penetrates through the orifice of the rotating outer cylinder and extends into the bayonet of the straight bevel gear II to fixedly connect the circular truncated cone, the rotating outer cylinder and the straight bevel gear II together, as shown in figures 6 and 8, simultaneously, the servo motor stops rotating, the main motor is started, the rotating outer cylinder, the straight bevel gear II and the circular truncated cone rotate under the action of the main motor, and, thereby enabling the fishway to work normally.

When the liquid level sensor 61 detects that the water level value is enough to enable the spiral structure 10 to rotate, the main motor 63 stops working, the servo motor 65 rotates reversely to drive the moving rod to move downwards, the circular table body moves downwards along the sliding rail of the fixed block, the convex block on the circular table body moves upwards along the first sliding rail, meanwhile, the convex block retracts from the bayonet and the orifice until the convex table on the circular table body descends to the bottom of the sliding rail, and the servo motor stops rotating.

When the upstream water head is insufficient, namely the water level in the upstream grading tank is not high enough to flow into the outer cylinder through the water through port 40 and drive the outer helical blades to rotate, and the water level value is stored in the singlechip through a program; meanwhile, when the upstream water head is enough, the water level value is stored in the singlechip through a program. The programs stored in the singlechip are also as follows: the time of the start and stop working interval of the servo motor; controlling the reverse rotation of the rotor of the servo motor, namely controlling the on-off of a double-pole double-throw switch circuit; the working time and the stopping time of the two motor drives are matched, namely the design of the delay circuit.

The utility model discloses a design of hierarchical fish way has utilized the screw pump principle, adopts automatic and electronic fish way function mode that combines together, makes the fish move about with the help of the lift of fish way self to whether the motor is launched in the timely feedback water level condition decision, clean energy-conservation, the equipment of being convenient for is maintained, crosses fish efficient, does benefit to the migration and the exchange of upper and lower trip organic matter, has solved the difficult problem of migration of fish.

The unexplained parts related to the present invention are the same as or implemented by using the prior art.

Claims (9)

1. A spiral cylinder for grading fishways, characterized in that: the spiral roller is arranged between the upstream grading tank and the downstream grading tank and comprises an inner cylinder, an outer spiral blade, an inner spiral blade and a rotating shaft, the upper end of the rotating shaft is rotatably connected with a fixed rod of the upstream grading tank through a first rotating bearing, and the lower end of the rotating shaft is rotatably connected with a fixed rod of the downstream grading tank through a first rotating bearing; the inner helical blade is fixedly connected to the rotating shaft, the inner barrel is fixedly connected to the inner helical blade, the outer helical blade is fixedly connected to the outer side wall of the inner barrel, the outer barrel is fixedly connected to the outer helical blade, the inner helical blade and the outer helical blade are opposite in rotating direction, two ends of the inner barrel extend out of the outer barrel, and the lower end of the inner barrel is immersed in water.

2. The spiral drum for grading fishways of claim 1, wherein: the grading ponds are sequentially provided with a plurality of stages in the water flow direction, adjacent upstream grading ponds and downstream grading ponds are separated by partition walls, and the heights of the partition walls are sequentially reduced along the water flow direction;

the partition wall is provided with a water through hole, the water through hole extends outwards to the upper end of the outer barrel, water in the upstream grading pond flows into the outer barrel through the water through hole, water flow impacts the outer spiral blade to drive the inner barrel, the inner spiral blade and the rotating shaft to rotate together, under the action of the inner spiral blade, water in the downstream grading pond flows to the upstream grading pond through the inner barrel, and fish in the downstream grading pond enters the inner barrel from the lower end of the inner barrel and enters the upstream grading pond from the upper end of the inner barrel.

3. A spiral drum for grading fishways according to claim 2, characterized in that: the spiral roller is obliquely arranged, the inclination angle is preferably 30-40 degrees, and automatic fish conveying without additional power is realized to the maximum extent.

4. A spiral drum for grading fishways according to claim 3, characterized in that: the upper end of the rotating shaft is sleeved with a first straight bevel gear, a fixing rod of the upstream classifying pool is arranged on a fixing device, a second straight bevel gear is arranged on the fixing device and meshed with the first straight bevel gear, and the second straight bevel gear is driven to rotate by a main motor arranged on the fixing device.

5. The spiral drum for grading fishways of claim 4, wherein: fixing device is including a supporting cylinder, a supporting bench has set firmly in the supporting cylinder, main motor sets up on a supporting bench, the output shaft of main motor sets up, and it is parallel with the central line of supporting cylinder, be connected with the gear on the output shaft, the top of main motor is provided with rotatory urceolus, the space has between rotatory urceolus bottom and the main motor, rotatory urceolus bottom has the bellied cavity that makes progress, the tooth's socket has on the cavity inner wall, the gear on the main motor output shaft is located this cavity, and the gear meshes with the tooth's socket of cavity, the motor drives rotatory urceolus and rotates, the tray has been linked firmly on the lateral wall of rotatory urceolus, two fixed cover of straight bevel gear are established on rotatory urceolus lateral wall and are supported on.

6. The spiral drum for grading fishways of claim 5, wherein: the output shaft of the main motor is sleeved with a pressure bearing, and the pressure bearing is positioned in a gap between the bottom of the rotary outer cylinder and the main motor.

7. The spiral drum for grading fishways of claim 1, wherein: the upper end of the inner cylinder is of a horn mouth structure with an outward opening.

8. The spiral drum for grading fishways of claim 1, wherein: the number of the blade heads of the outer spiral blades is 3, namely, the outer spiral blades are arranged in a group at intervals of 120 degrees, and the number of the blade heads of the inner spiral blades is 2, namely, the inner spiral blades are arranged in a group at intervals of 180 degrees and are arranged in a staggered mode.

9. The spiral drum for grading fishways of claim 8, wherein: the diameter of the rotating shaft, the diameter of the inner spiral blade and the diameter of the outer spiral blade can be selected to be 1: 4: 6.

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