CN205841222U - A kind of fish close friend's axle sky axial-flow pump - Google Patents

Abstract

This utility model relates to a kind of fish close friend's axle sky axial-flow pump, remove the axle construction of traditional axial flow pump, originally axle, impeller and guide vane structure are by Zhou Kong axial wheel mechanism, Zhou Kong stator mechanism replaces, whole Zhou Kong axial wheel mechanism drives it to rotate by external belt pulley, the hub portion of impeller and stator is hollow, not only add the area of passage of liquid, and stayed a passage to sea, river class biologies such as fishes through axial-flow pump, imitative cone-shaped is installed before Zhou Kong axial wheel mechanism slip through the net, when axial-flow pump works, Fish are under the drive of liquid, cone-shaped is slipped through the net and is served protective effect, it is made to pass through from the hub spindle sky part of impeller and stator, ensure that the life security that sea, the river classes such as fish are biological, and it has simple in construction, reliability is high, the features such as easy installation.

Description

A fish-friendly shaft-empty axial-flow pump

technical field

The utility model relates to an axial-flow pump, in particular to a fish-friendly axial-air axial-flow pump.

Background technique

Axial flow pump is a kind of general-purpose machinery with wide application, and the domestic requirements are very huge. It is mainly suitable for occasions with low lift and high flow, such as irrigation, drainage, dock drainage, water level adjustment of canal locks, or as a large circulating water pump in power plants. . Traditional axial flow pumps have the following advantages: 1) Double mechanical seals, which can reliably prevent water leakage. Large-scale pumps use special thrust bearings due to their large axial force, with reasonable structural design, sufficient lubrication, good heat dissipation, and long service life of the bearings; 2) Pumps The scale of the station is small, the civil engineering and building structure are simple, and the investment is greatly reduced, which can save 30%-40% of the construction cost of the pumping station; 3) The machine-pump integration saves time, labor and cost for installation and maintenance; 4) Machine-pump Submerged in water, the cooling condition is good, the pump operation is well balanced, stable, with little vibration and low noise.

Due to the wide application of axial flow pumps in river and sea occasions such as waterlogging, dock drainage, and water level adjustment of canal locks, there are a large number of fish organisms in the river and sea, and fish enter the interior of the axial flow pump under the suction of the axial flow pump. The high-speed rotation of the existing traditional axial flow pump impeller makes it difficult for fish to survive. In order to reduce the mortality rate of fish and other river and sea organisms when the axial flow pump is working, this utility model designs a new type of axial flow axial flow pump according to the characteristics of the axial flow pump. The hollow part of the shaft of the pump passes through, which ensures the life safety of fish and other river and sea creatures.

Utility model content

The utility model provides a new fish-friendly shaft-empty axial-flow pump structure. The design principle is: the shaft structure of the traditional axial-flow pump is removed, and the original shaft, impeller and guide vane structure is replaced by the shaft-empty axial-flow impeller mechanism and the shaft-air guide. The whole axial flow impeller mechanism is driven by the external pulley to rotate, and the imitation cone-shaped leaking net is installed in front of the axial flow impeller mechanism. When the axial flow pump is working, the fish will be driven by the liquid to the cone. The surface-shaped leaking net plays a protective role, allowing it to pass through the hollow part of the hub shaft of the impeller and guide vane, ensuring the life safety of fish and other river and sea creatures.

The technical scheme adopted to realize the above-mentioned purpose is:

A fish-friendly shaft-empty axial-flow pump described in the utility model is mainly composed of a water inlet trumpet pipe, anchor bolts, a supporting transition sleeve, a pulley, a shaft-empty axial-flow impeller mechanism, a shaft-empty guide vane mechanism, and a water outlet elbow. , pulley 2, coupling, transmission shaft, motor and belt, the main flow parts of the axial flow pump are water inlet horn tube, supporting transition sleeve, shaft hollow axial flow impeller mechanism, shaft hollow guide vane mechanism and water outlet elbow. The installation and positioning are connected sequentially from bottom to top. The shaft-empty guide vane mechanism is installed between the shaft-empty axial-flow impeller mechanism and the outlet elbow. The shaft-empty guide vane mechanism is positioned through the outlet elbow and fixed on the outlet elbow. The shaft is empty. The flow impeller mechanism is double-positioned through the supporting transition sleeve and the shaft-empty guide vane mechanism, and can rotate freely around the supporting transition sleeve and the shaft-empty guide vane mechanism; the shaft-empty axial flow impeller mechanism is equipped with a pulley outside; the water inlet horn The pipe and the supporting transition sleeve are fixed by anchor bolts;

The motor, transmission shaft, coupling and pulley 2 are connected in sequence, and the motor drives the rotation of the pulley 2 through the transmission shaft and the coupling, and the pulley 2 drives the rotation of the pulley 1 and the axial flow impeller mechanism through the belt.

The shaft-empty axial-flow impeller mechanism is composed of shaft-empty hub 1, blades and pipes-1. The shaft-empty hub of the shaft-empty axial-flow impeller mechanism is uniformly arranged with holes in the circumferential direction, and the liquid can flow into the area where the blades are located from the hollow part of the hub; The shaft-empty guide vane mechanism is composed of shaft-empty hub 2, guide vanes and pipes 2 and 3. The shaft-empty hub 2 of the shaft-empty guide vane mechanism is uniformly arranged with holes in the circumferential direction, and liquid can flow into the area where the guide vanes are located from the hollow part of the hub. .

An imitation cone-shaped filter is installed in front of the axial-air axial-flow impeller mechanism. The arc surface of the imitated cone-shaped filter has a smooth transition, and the diameter of the outlet of the imitated cone-shaped filter is equal to the inner diameter of the empty hub. The wall of the imitated cone-shaped filter is thicker. Ensure its structural strength.

The device described in the utility model also includes an integrated bracket and bolts. The supporting transition sleeve and the integrated bracket form an integrated structure through welding. The outlet elbow is installed on the integrated bracket and fixed by bolts, wherein the integrated bracket and the outlet bend The connecting part of the pipe is a ring structure, and the axial hollow axial flow impeller mechanism and the axial hollow guide vane mechanism of the axial hollow axial flow pump are double positioned through the integrated bracket and the supporting transition sleeve, and the motor is fixedly installed on the integrated bracket.

The joints between the supporting transition sleeve and the shaft-empty axial flow impeller mechanism, the shaft-empty axial flow impeller mechanism and the shaft-empty guide vane mechanism, the shaft-empty guide vane mechanism and the water outlet elbow adopt a double sealing ring structure to ensure that the entire fish-friendly shaft No leakage of the flow-passing parts of the hollow axial flow pump and smooth operation of the axial hollow axial flow impeller mechanism.

The shaft-empty axial-flow impeller mechanism and the shaft-empty guide vane mechanism have the same maximum wall thickness of the hub with a radius equal to 1 to 2 times the hub, and the inner diameters of the shaft-empty parts of the shaft-empty hub 1 and shaft-empty hub 2 are equal. Under the condition of ensuring the passage of fish, taking into account its hydraulic efficiency, the inner diameters of the shaft hollow parts of the shaft hollow hub 1 and the shaft hollow hub 2 are reasonably selected.

The beneficial effects of the utility model are:

(1) The axial flow impeller mechanism is driven by the external pulley to rotate, and the hub part is hollow, which not only increases the flow area of the liquid, but also leaves a channel for fish and other river and sea creatures to pass through the axial flow pump, and its It has the characteristics of simple structure, high reliability and easy installation.

(2) The utility model has been tested by users, and the response effect is good, and the practicability is good.

Description of drawings

Fig. 1 is a structural principle diagram of a fish-friendly axial hollow axial flow pump of the utility model.

Fig. 2 is a partially enlarged view of the structure of a fish-friendly axial hollow axial flow pump of the present invention.

Fig. 3 is a structure diagram of an axial-empty axial-flow impeller mechanism of a fish-friendly axial-air axial-flow pump of the present invention.

Fig. 4 is a structure diagram of a shaft-empty guide vane mechanism of a fish-friendly shaft-empty axial-flow pump of the present invention.

In the figure: 1. Water inlet horn pipe, 2. Anchor bolts, 3. Supporting transition sleeve, 4. Imitation cone-shaped leakage screen, 5. Pulley 1, 6. Shaft-air axial-flow impeller mechanism, 7. Shaft-air guide Leaf mechanism, 8. Integrated bracket, 9. Bolt, 10. Water outlet elbow, 11. Pulley 2, 12. Coupling, 13. Transmission shaft, 14. Motor, 15. Belt, 61, Shaft empty wheel hub 1, 62. blade, 63. pipeline one, 71. shaft hollow hub two, 72. guide vane, 73. pipeline two.

detailed description

Fig. 1 and Fig. 2 are the schematic diagrams of the structure of a fish-friendly hollow axial flow pump related to the utility model, which mainly consists of a water inlet horn tube 1, anchor bolts 2, supporting transition sleeve 3, imitation cone-shaped leaking net 4, and a pulley 15. Shaft hollow axial flow impeller mechanism 6, shaft hollow guide vane mechanism 7, integrated bracket 8, bolt 9, water outlet elbow 10, pulley 2 11, coupling 12, transmission shaft 13, motor 14 and belt 15 ten Consisting of five parts, the shaft-empty axial-flow impeller mechanism 6 is composed of shaft-empty hub 1 61, blade 62 and pipe 1 63, and the shaft-empty guide vane mechanism 7 is composed of shaft-empty hub 2 71, guide vane 72 and pipe 2 73 3 Partial composition, the main flow parts of the axial flow pump, the water inlet trumpet tube 1, the support transition sleeve 3, the axial hollow axial flow impeller mechanism 6, the axial hollow guide vane mechanism 7 and the water outlet elbow 10 are connected and positioned sequentially from top to bottom, The shaft hollow guide vane mechanism 7 is installed between the shaft hollow axial flow impeller mechanism 6 and the water outlet elbow 10. The shaft hollow guide vane mechanism 7 is connected and positioned through the water outlet elbow 10 and fixed on the water outlet elbow 10. The shaft hollow axial flow The impeller mechanism 6 is double-positioned by supporting the transition sleeve 3 and the shaft-empty guide vane mechanism 7, and can freely rotate around the support transition sleeve 3 and the shaft-empty guide vane mechanism 7. The motor 14 is driven by the transmission shaft 13 and the coupling 12 The rotation of the pulley two 11, the pulley two 11 drives the rotation of the pulley one 5 and the axial flow impeller mechanism 6 through the belt 15.

The shaft hollow hub 1 61 of the shaft hollow axial flow impeller mechanism 6 is evenly arranged with openings in the circumferential direction, the liquid can flow into the area where the blade 62 is located from the hollow part of the hub, and the shaft hollow hub 2 71 of the shaft hollow guide vane mechanism 7 is evenly arranged circumferentially. Through the hole, the liquid can flow into the region where the guide vane 72 is located from the hollow part of the hub. Install the imitation cone-shaped drain screen 4 before the shaft-empty axial-flow impeller mechanism 6, the imitation cone-shaped drain screen 4 has a smooth transition, and the outlet diameter of the imitation cone-shaped drain screen 4 is equal to the inner diameter of the shaft hollow hub 271, and the imitation cone-shaped drain screen The wall surface of 4 is thicker, guarantees its structural strength.

The supporting transition sleeve 3 and the integrated bracket 8 are welded to form an integrated structure. The water outlet elbow 10 is installed on the integrated bracket 8 and fixed by bolts 9. The connecting part of the integrated bracket 8 and the water outlet elbow 10 is a ring structure , through the integrated bracket 8 and the supporting transition sleeve 3, the axial hollow axial flow impeller mechanism 6 and the axial hollow guide vane mechanism 7 of the axial hollow axial flow pump are double positioned, and the motor 14 is fixedly installed on the integrated bracket 8 .

The joints between the support transition sleeve 3 and the shaft-empty axial-flow impeller mechanism 6, the shaft-empty axial-flow impeller mechanism 6 and the shaft-empty guide vane mechanism 7, and the shaft-empty guide vane mechanism 7 and the water outlet elbow 10 adopt a double sealing ring structure , to ensure no leakage of the flow-passing parts of the fish-friendly shaft-empty axial-flow pump and the smooth operation of the shaft-empty axial-flow impeller mechanism 6 .

The shaft-empty axial-flow impeller mechanism 6 and the shaft-empty guide vane mechanism 7 have the same maximum wall thickness of the hub with a radius equal to 1 to 2 times the hub, and the inner diameters of the shaft-empty parts of the shaft-empty hub 1 61 and the shaft-empty hub 2 71 are equal, During the design, it is necessary to take into account its hydraulic efficiency while ensuring that fish pass through, and rationally design the inner diameters of the shaft hollow parts of the shaft empty hub one 61 and the shaft empty hub two 71.

Claims (6)

1. A fish-friendly shaft hollow axial flow pump, characterized in that the shaft hollow axial flow pump consists of a water inlet horn tube (1), anchor bolts (2), a supporting transition sleeve (3), and a pulley ( 5), shaft hollow axial flow impeller mechanism (6), shaft hollow guide vane mechanism (7), water outlet elbow (10), pulley two (11), coupling (12), transmission shaft (13), motor ( 14) and the belt (15), the main flow parts of the axial flow pump are the water inlet horn pipe (1), the supporting transition sleeve (3), the axial air impeller mechanism (6), and the axial air guide vane mechanism (7) and the water outlet elbow (10) are connected and positioned sequentially from bottom to top, the shaft hollow guide vane mechanism (7) is installed between the shaft hollow axial flow impeller mechanism (6) and the water outlet elbow (10), and the shaft hollow guide vane mechanism (7) Positioned by the water outlet elbow (10) and fixed on the water outlet elbow (10), the axial hollow axial flow impeller mechanism (6) is carried out by supporting the transition sleeve (3) and the axial hollow guide vane mechanism (7). Double positioning, and can rotate freely around the supporting transition sleeve (3) and the shaft-empty guide vane mechanism (7); the shaft-empty axial flow impeller mechanism (6) is equipped with a pulley 1 (5); the water inlet horn (1 ) and the supporting transition sleeve (3) are fixed by anchor bolts (2); The motor (14), transmission shaft (13), coupling (12) and pulley two (11) are connected in sequence, and the motor (14) Drive shaft (13) and coupling (12) to drive the rotation of pulley 2 (11), and pulley 2 (11) drives the rotation of pulley 1 (5) and shaft hollow axial flow impeller mechanism (6) through the belt (15) . 2. The fish-friendly shaft hollow axial flow pump according to claim 1, characterized in that, the shaft hollow axial flow impeller mechanism (6) consists of shaft hollow hub one (61), blades (62) and pipe one (63 ) consists of three parts, the shaft hollow hub one (61) of the shaft hollow axial flow impeller mechanism (6) is uniformly arranged with holes in the circumferential direction, and the liquid can flow into the area where the blade (62) is located from the hollow part of the hub; the shaft hollow guide vane mechanism (7) It consists of three parts: hollow shaft hub 2 (71), guide vane (72) and pipe 2 (73). Hollow shaft hub 2 (71) of the shaft hollow guide vane mechanism (7) is uniformly arranged with holes in the circumferential direction. Liquid can flow from the hollow part of the hub into the area where the guide vanes (72) are located. 3. The fish-friendly axial-air axial-flow pump according to claim 1, characterized in that, before the axial-air axial-flow impeller mechanism (6), an imitation cone-shaped leakage screen (4) is installed, and an imitation-cone-shaped leakage screen (4 ) The arc surface is smooth and transitional, and the outlet diameter of the imitation cone-shaped leakage screen (4) is equal to the inner diameter of the empty hub one (61). 4. The fish-friendly shaft hollow axial flow pump according to claim 1, characterized in that it also includes an integrated bracket (8) and bolts (9), supporting the transition sleeve (3) and the integrated bracket (8) through An integrated structure is formed by welding, and the water outlet elbow (10) is installed on the integrated bracket (8) and fixed by bolts (9). The connecting part of the integrated bracket (8) and the water outlet elbow (10) is a ring structure, Through the integrated bracket (8) and the supporting transition sleeve (3), the shaft hollow axial flow impeller mechanism (6) and the shaft hollow guide vane mechanism (7) of the shaft hollow axial flow pump are double positioned, and the motor (14) is fixed and installed on the integrated bracket (8). 5. The fish-friendly shaft hollow axial flow pump according to claim 1, characterized in that the supporting transition sleeve (3) and the shaft hollow axial flow impeller mechanism (6), the shaft hollow axial flow impeller mechanism (6) and the shaft The connection between the empty guide vane mechanism (7), the shaft-empty guide vane mechanism (7) and the water outlet elbow (10) adopts a double sealing ring structure. 6. The fish-friendly shaft-empty axial-flow pump according to claim 1, characterized in that the radius of the shaft-empty part of the shaft-empty axial-flow impeller mechanism (6) and the shaft-empty guide vane mechanism (7) is equal to 1 to 2 times The maximum wall thickness of the wheel hubs is equal, and the inner diameters of the hollow shaft parts of the hollow shaft hub one (61) and the hollow shaft hub two (71) are equal.