CN2876383Y

CN2876383Y - Multiflow passage impeller centrifugal pump

Info

Publication number: CN2876383Y
Application number: CN200620090031.1U
Authority: CN
Inventors: 姜万芝
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-03-07
Anticipated expiration: 2016-03-28

Abstract

The utility model relates to a liquor pump, in particular a multi-channel impeller centrifugal pump and is a preferred liquor pump required for centrifugal pump location, consisting of a pump body, a pump bonnet and a pump shaft. The pump shaft is provided with an impeller with two channels inside. A sealing ring is provided between two exit ends of the two channels of the impeller on the inside of the pump cavity to prevent media from the two channels from mixing. Comparing with the prior art, introducing such technical measures as a multi-channel impeller and a sealing ring and so on with axial force balance proved through test, the utility model is characterized in small disk friction loss and high efficiency of pump, head of delivery of one impeller equivalent to that of several ones of the same specification, compactness, light weight, economization of raw and processed materials, significantly reduced cost of manufacture and operating cost.

Description

Multi-runner type vane centrifugal pump

Technical field:

The utility model relates to a kind of liquid pump, and particularly a kind of multi-runner type vane centrifugal pump is the liquid pump that needs centrifugal pump place first-selection.

Background technique:

Water pump is widely used in industry, agricultural and every field such as civilian, for development national economy had once been brought into play positive effect.But along with developing rapidly of science and technology, combination property to liquid pump requires also more and more higher, yet the impeller of centrifugar liquid pump in the past is the single channel formula, for satisfying the requirement of lift, a plurality of single channel formula impellers need be set in multistage pump, consequently the volume of pump increases, disc friction increases, and for the axial force of balance multistage pump, general pump efficiency will reduce 4-10%, for these reasons, centrifugal pump in the past has further improved necessity.

The model utility content:

The utility model provides a kind of compact structure reasonable at the technical problem that prior art exists, and volume is little, and is in light weight, and disc friction is little, and is stable and reliable for performance, the multi-runner type vane centrifugal pump that rate of fault is low.

The technological scheme of the utility model realization goal of the invention is made up of the pump housing, pump cover and pump shaft, at least be provided with an impeller that has at least two runners in it on its described pump shaft, the pump chamber of the pump housing inboard with per two the runner exit ends of impeller between corresponding position be provided with and prevent the mixed mutually casing ring of two runners outflow medium.

The inlet of the described pump housing communicates with impeller first flow inlet, the outlet of each last runner communicates with the inlet of back one runner by the stationary flowpath that is provided with on the pump housing and the pump cover in the impeller, and the outlet of last runner is outwards carried highly pressurised liquid by the outlet on the pump housing.

Each runner of described impeller is axially analysed and observe for parallel or arranged in a crossed manner, the cover plate outside of last runner is provided with the back blades of balancing axial thrust, the position of wheel hub presses closer on the invagination right angle of axle sleeve and end face that the pump shaft shaft shoulder combines, and opposite side is installed on the pump shaft by impeller nut.

In the Seal cage that described pump cover and axle sleeve are formed, be provided with mechanical sealing assembly, the outside is fixed by mechanical seal cover.

Described pump shaft rear portion is provided with bearing, and places on the bearing suspended rack assembly, and the bearing outside is provided with bearing gland.

The utility model compared with prior art, owing to adopted a series of technical measures such as multi-runner type vane and casing ring, and axial force balance is arranged through evidence, disc friction is little, the pump efficiency height, and an impeller is equivalent to the lift of a plurality of impellers of same specification in the past, and volume is little, in light weight, save material, obviously reduce manufacture cost and operating cost.

Description of drawings:

Fig. 1 is the main TV structure schematic representation of the two flow channel type impeller centrifugal pumps that be arranged in parallel of the utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the B-B sectional view of Fig. 1.

Fig. 4 is the main TV structure schematic representation of the three flow channel type impeller centrifugal pumps that be arranged in parallel of the utility model.

Fig. 5 is the main TV structure schematic representation of the four flow channel type impeller centrifugal pumps that be arranged in parallel of the utility model.

Fig. 6 is the C-C sectional view of Fig. 5.

Fig. 7 is the utility model two flow channel type impeller centrifugal pump master TV structure schematic representation arranged in a crossed manner.

Figure middle pump body 1, impeller nut 2, impeller 3, casing ring 4, back blades 5, pump cover 6, axle sleeve 7, mechanical seal cover 8, pump shaft 9, bearing 10, bearing suspended rack assembly 11.

Embodiment:

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, as Fig. 1, Fig. 4, Fig. 5, pump shaft 9 front portions shown in Figure 7 are set with axle sleeve 7, axle sleeve 7 front end invaginations meet at right angles and combine in case axial motion with the shaft shoulder of pump shaft 9, in be provided with multi-runner type vane 3 the wheel hub inboard withstand the front end that axle sleeve 7 is installed in pump shaft 9, and it is fixing by impeller nut 2, pump shaft 9 is loaded in the pump housing 1, pump cover 6 is installed on the pump housing 1, be provided with mechanical sealing assembly between its inner chamber and the axle sleeve 7, the outside is fixing by mechanical seal cover 8, bearing suspended rack assembly 11 is fixedlyed connected with pump cover 6, the bearing 10 at pump shaft 9 rear portions is loaded on the bearing suspended rack assembly 11, and bearing 10 outsides are provided with bearing gland.

Multithread road in the described impeller 3, wherein the inlet of first flow communicates with the inlet of the pump housing 1, and the outlet of each last runner, communicate with the inlet of back one runner by the pump housing 1 and pump cover 6 set stationary flowpaths, the outlet of last runner is outwards carried highly pressurised liquid by the outlet of the pump housing 1.Axially analysing and observe of impeller 3 each runner is parallel or arranged in a crossed manner, last flow passage cover plate outside is provided with the back blades 5 of balancing axial thrust, for the medium that prevents each runner exit end mixes mutually, the pump housing 1 inboard with impeller 3 per two runner exit ends between corresponding position be provided with casing ring 4.

Claims

1, multi-runner type vane centrifugal pump, form by the pump housing (1), pump cover (6) and pump shaft (9), it is characterized in that being provided with at least on the described pump shaft (9) impeller (3) that has at least two runners in it, the pump housing (1) pump chamber inboard with per two the runner exit ends of impeller (3) between corresponding position be provided with and prevent the mixed mutually casing ring (4) of two runners outflow medium.

2, multi-runner type vane centrifugal pump according to claim 1, the inlet that it is characterized in that the described pump housing (1) communicates with the first flow inlet of impeller (3), each last runner exit communicates with the inlet of back one runner by the pump housing (1) and the set stationary flowpath of pump cover (6) in the impeller (3), and last runner exit is outwards carried highly pressurised liquid by the pump housing (1) outlet.

3, multi-runner type vane centrifugal pump according to claim 1, it is characterized in that each runner of described impeller (3) axially analyses and observe for parallel or arranged in a crossed manner, the cover plate outside of last runner is provided with the back blades (5) of balancing axial thrust, the position of wheel hub presses closer on axle sleeve (7) invagination right angle and end face that pump shaft (9) shaft shoulder combines, and opposite side is installed on the pump shaft (9) by impeller nut (2).

4, multi-runner type vane centrifugal pump according to claim 1 is characterized in that being provided with mechanical sealing assembly in the Seal cage that described pump cover (6) and axle sleeve (7) form, and the outside is fixing by mechanical seal cover (8).

5, multi-runner type vane centrifugal pump according to claim 1 is characterized in that described pump shaft (9) rear portion is provided with bearing (10), and places on the bearing suspended rack assembly (11), and the bearing outside is provided with bearing gland.