CN202867247U

CN202867247U - Water-turbine pump with double-impeller pump coaxially connected in series

Info

Publication number: CN202867247U
Application number: CN2012205433867U
Authority: CN
Inventors: 吴兴国; 肖方行
Original assignee: FUJIAN YOUXI LONG-WAVE HYDRAULIC MACHINERY Co Ltd
Current assignee: FUJIAN YOUXI LONG-WAVE HYDRAULIC MACHINERY Co Ltd
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2013-04-10
Anticipated expiration: 2022-10-19

Abstract

Provided is a turbine pump with a double-impeller pump coaxially connected in series. The turbine pump with the double-impeller pump coaxially connected in series comprises a pump body and a pump shaft, wherein the pump body comprises a pump cavity and a water-turbine cavity, and the pump shaft is divided into a first section shaft and a second section shaft. Two impellers are arranged on the first section shaft in a fixed mode. A first water inlet is formed above the pump body and a first water inlet is formed in the bottom of the pump cavity. A rotary wheel is fixed on the second section shaft in a fixed mode. A water guide seat is arranged on the pump body and corresponds to the rotary wheel. A second water outlet is formed in the pump body. A second water outlet is formed in the bottom end of the pump body. The rotary wheel is fixed in an inner shell of the water guide seat through a guide bearing. The material quality of an outer layer of the guide bearing is cast iron and the material quality of an inner layer of the guide bearing is abrasion resistant rubber. Due to the arrangement of the two impellers, the range of lift of the whole water-turbine pump is effectively increased. After water flow passes through a first impeller, the water flow flows into a second impeller and then collects in the pump shell and outputs, and therefore the range of lift is ensured. On the other hand, the guide bearing with the novel structure is convenient to disassemble and long in service life. The water-turbine pump with the double-impeller pump coaxially connected in series reduces loss of water flow, enlarges the water head ratio, improves utilization efficiency and is wide in range of application.

Description

The turbine pump of the coaxial series connection double-impeller pump of pump

Technical field

The utility model relates to water lifting machinery, relates in particular to a kind of turbine pump, and concrete is the turbine pump of the coaxial series connection double-impeller pump of pump.

Background technique

Turbine pump is a kind of water lift of environmental protection and energy saving. the water lift machine that it is comprised of by certain way water turbine and water pump, current with certain energy drive the abundant waterpower resourses of rotary wheel of water turbine utilization and carry out water lift, and not power consumption, oil consumption, turbine pump be not as important developing direction in the middle of people's farming, woods, animal husbandry production, the domestic water.

Thereby traditional turbine pump generally is to adopt an impeller to rotate the drive current to raise up, the driving force of an impeller is limited, so that the turbine pump lift of this structure is limited, if need to reach higher lift, even it also is of no avail having increased the rotating speed of impeller, therefore, the turbine pump of this structure also is not suitable with present market, on the other hand, whole pump shaft is rotating for it when being arranged on the pump housing, the damage of guide bearing occurs when long in service time easily, and the dismounting of traditional guide bearing is inconvenient.

The model utility content

The purpose of this utility model is to provide the turbine pump of the coaxial series connection double-impeller pump of pump of a kind of compact structure, practical and convenient, high-lift reduction agriculture, forestry, animal husbandry, fisheries cost of production.

For solving the problems of the technologies described above, the utility model provides the turbine pump of the coaxial series connection double-impeller pump of a kind of pump, comprise the pump housing and the rotating pump shaft that is arranged in the pump housing, the described pump housing comprises pump chamber and water wheels chamber, described pump chamber is positioned at the top in water wheels chamber, and pump shaft is divided into the first paragraph axle that is positioned at pump chamber and the second segment axle that is positioned at the water wheels chamber;

Be fixed with two impellers on the described first paragraph axle, be followed successively by the first impeller and the second impeller from top to bottom, be provided with stator on the inwall of corresponding the first impeller of described pump chamber, described stator is a plurality of, and the axis that centers on pump shaft is the radial setting of spiral;

The top of the described pump housing is provided with the first water intake that communicates for pump chamber, and the bottom of described pump chamber is provided with and makes the first water outlet of raising waterborne;

Be fixed with runner on described the second end axle, corresponding runner is provided with water guide stand on the described pump housing, and being provided with on the described pump housing supplies water flows into second water intake in water wheels chamber, and the bottom of the described pump housing is provided with the second water outlet;

Described runner is fixed on by guide bearing in the inner casing of water guide stand, and the outer material of described guide bearing is cast iron, and the internal layer material is abrasive rubber.

The utility model improves to be had, and offers groove on the inboard of described impeller, and corresponding two impeller locations offer keyway on the described main shaft, and described impeller and pump shaft are fastened to each other by key.

The utility model improves to be had, and the bore area of described guide bearing is provided with the groove that passes through for lubricated water.

The utility model improves to be had, and the top of the described pump housing is provided with bearing support, and an end of pump shaft is rotating to be arranged on the bearing support, and the outlet end of described pump shaft and bearing support is provided with oil sealing and spiral seal cover.

The utility model improves to be had, and the first water intake of the described pump housing is fixed with the filter screen that prevents that the pasture and water foreign material from entering.

The beneficial effects of the utility model are: by the setting of two impellers, effectively increase whole water wheels lift of pump, current flow to the second impeller and output after pump case compiles after by the first impeller, and lift is guaranteed, on the other hand, the guide bearing of new structure, convenient disassembly, long service life, said structure has reduced the current loss, increase head ratio, improved utilization ratio, applied widely.

Description of drawings

The structural representation of the turbine pump of the coaxial series connection double-impeller pump of a kind of pump that accompanying drawing 1 provides for the utility model.

Label declaration: the 1-pump housing; The 11-pump chamber; 111-the first water intake; 112-the first water outlet; 12-water wheels chamber; 121-the second water intake; 122-the second water outlet; The 13-water guide stand; The 2-pump shaft; 31-the first impeller; 32-the second impeller; The 4-stator; The 5-runner; The 6-guide bearing; The 7-bearing support; The 8-filter screen.

Embodiment

By describing technology contents of the present utility model, structure characteristics in detail, realized purpose and effect, below in conjunction with mode of execution and cooperate that accompanying drawing is detailed to give explanation.

See also Fig. 1, the turbine pump of the coaxial series connection double-impeller pump of a kind of pump that the utility model provides shown in the accompanying drawing, comprise the pump housing 1 and the rotating pump shaft 2 that is arranged in the pump housing 1, the described pump housing 1 comprises pump chamber 11 and water wheels chamber 12, described pump chamber 11 is positioned at the top in water wheels chamber 12, and pump shaft 2 is divided into the first paragraph axle that is positioned at pump chamber 11 and the second segment axle that is positioned at water wheels chamber 12;

Be fixed with two impellers on the described first paragraph axle, be followed successively by the first impeller 31 and the second impeller 32 from top to bottom, be provided with stator 4 on the inwall of described pump chamber 11 corresponding the first impellers 31, described stator 4 is a plurality of, and the axis that centers on pump shaft 2 is the radial setting of spiral;

The top of the described pump housing 1 is provided with the first water intake 111 that communicates for pump chamber 11, and the bottom of described pump chamber 11 is provided with and makes the first water outlet 112 of raising waterborne;

Be fixed with runner 5 on described the second end axle, corresponding runner 5 is provided with water guide stand 13 on the described pump housing 1, and being provided with on the described pump housing 1 supplies water flows into second water intake 121 in water wheels chamber 12, and the bottom of the described pump housing 1 is provided with the second water outlet 122;

Described runner 5 is fixed on by guide bearing 6 in the inner casing of water guide stand 13, and the outer material of described guide bearing 6 is cast iron, and the internal layer material is abrasive rubber.

In the present embodiment, water guide stand 13 is comprised of 16 fixed guide vanes 4, has several angle, makes current evenly flow into runner 5 by certain orientation.

In the present embodiment, see also Fig. 1, offer groove on the inboard of described impeller, corresponding two impeller 3 positions offer keyway on the described main shaft, described impeller and pump shaft 2 is fastened to each other by key, two impellers by the fixing cooperation that can effectively guarantee whole turbine pump of the mode of flat key firmly, certainly, in other embodiments, described flat key can also replace to the bond structure of round key or other shapes.

Described pump shaft 2 rotating being arranged on the pump housing 1, be specially, described pump shaft 2 is arranged on the pump housing 1 by bearing is rotating, wherein can bear axial force and the radial force that whole pump shaft 2 produces in running by deep groove ball bearing, certainly not limit the concrete structure of bearing in the present embodiment.

In the present embodiment, guide bearing 6 near runner 5, be installed in the endoporus of water guide shell, cylindrical adopts cast iron, internal diameter adopts the abrasive rubber compacting to form, so that the internal diameter of whole guide bearing 6 is more wear-resisting, has increased considerably the life-span of guide bearing 6, and adopt guide bearing 6 so that change, directly can change guide bearing 6 at the scene;

Further, the inwall of described guide bearing 6 is provided with the groove that lubricated water passes through, and greatly reduces the frictional force of whole guide bearing 6, has promoted the life-span of whole guide bearing 6.

In the present embodiment, see also Fig. 1, the top of the described pump housing 1 is provided with bearing support 7, and an end of pump shaft 2 is rotating to be arranged on the bearing support 7, described pump shaft 2 is provided with oil sealing and spiral seal cover with the outlet end of bearing support 7, prevents the leakage of lubricant oil and the impouring of silt.

In the present embodiment, see also Fig. 1, the first water intake 111 of the described pump housing 1 is fixed with the filter screen 8 that prevents that the pasture and water foreign material from entering.

During operation, at first the pump housing 1 is fixed on the place that need to move water, concrete, the hole that can the bottom surface by the pump housing 1 arranges again ordinatedly foot bolt fix, water is because action of gravitation afterwards, enter through blower inlet casing from second water-inlet cavity in water water wheels chamber 12 and to flow to runner 5, be provided with water guide stand 13 on the pump housing 1 of runner 5 correspondences, water guide stand 13 is to form by 16 fixed guide vanes 4 in the present embodiment, have several angle, namely form one and be the setting of spiral reflection shape around pump shaft 2 axis, the water of inflow can impact runner 5 along certain orientation, accelerated the rotation of runner 5, water can flow out by the second water outlet 122 afterwards;

After pump shaft 2 rotates, impeller is rotated, impeller is divided into first order impeller and second level impeller from bottom to up, water flows into from the first water intake 111, and the stator 4 by flow channel type enters first order impeller, and first order impeller begins to rotate, the centrifugal force that produces is delivered to water the water intake of second level impeller, and flow out from the first water outlet 112 after finally in the pump housing 1, converging, by the drive of sencond stage impeller, so that the final outflow water lift improves greatly.

Operating index such as the following table of concrete secondary turbine pump

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. the turbine pump of the coaxial series connection double-impeller pump of pump, it is characterized in that, comprise the pump housing and the rotating pump shaft that is arranged in the pump housing, the described pump housing comprises pump chamber and water wheels chamber, described pump chamber is positioned at the top in water wheels chamber, and pump shaft is divided into the first paragraph axle that is positioned at pump chamber and the second segment axle that is positioned at the water wheels chamber;

2. the turbine pump of the coaxial series connection double-impeller pump of pump according to claim 1 is characterized in that, offers groove on the inboard of described impeller, and corresponding two impeller locations offer keyway on the described main shaft, and described impeller and pump shaft are fastened to each other by key.

3. the turbine pump of the coaxial series connection double-impeller pump of pump according to claim 1 is characterized in that, the bore area of described guide bearing is provided with the groove that passes through for lubricated water.

4. the turbine pump of the coaxial series connection double-impeller pump of pump according to claim 1, it is characterized in that, the top of the described pump housing is provided with bearing support, and an end of pump shaft is rotating to be arranged on the bearing support, and the outlet end of described pump shaft and bearing support is provided with oil sealing and spiral seal cover.

5. the turbine pump of the coaxial series connection double-impeller pump of pump according to claim 1 is characterized in that, the first water intake of the described pump housing is fixed with the filter screen that prevents that the pasture and water foreign material from entering.