CN208203642U

CN208203642U - A kind of vertical pump

Info

Publication number: CN208203642U
Application number: CN201820768683.9U
Authority: CN
Inventors: 杨荣霞; 孙国政; 杭正飞; 冯飞翔; 马军令
Original assignee: Sanlian Pump Industry Co Ltd
Current assignee: Sanlian Pump Industry Co Ltd
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2018-12-07
Anticipated expiration: 2028-05-22

Abstract

The utility model discloses a kind of vertical pumps, including pump shaft, the lower end outer wall of pump shaft is disposed with lower bearing, pump shaft periphery wall is equipped with axle sleeve, is connected with impeller on pump shaft axle body, the pump shaft lower end is fixed with pump shaft suction casing, the suction casing includes the pod for being connected to pump shaft lower end, the pod outer peripheral surface is streamlined, has the big blade of circumferentially uniform intervals arrangement on the outer peripheral surface of pod, is disposed with vanelets between two adjacent big blades.The wheel hub of suction casing is connected with shell by size two distinct types of blade, simultaneously supporting wheel hub and shell and an equal amount of space is formed with hub shell, the space is that pumped (conveying) medium passes through space, two kinds of spacing with blades are uniformly distributed in wheel hub, on shell, symmetrical arrangement can more make medium is axisymmetric to enter impeller, performance is high, and energy consumption is small.

Description

A kind of vertical pump

Technical field

The utility model relates to a kind of pumps, and in particular to a kind of vertical pump.

Background technique

Currently, with the rapid development of the national economy, China is faced with huge energy demand and severe Energy situation, For pumping this universal machine, its performance is improved, is had great importance to energy saving.

Make designed pump function admirable, the impeller of only function admirable is inadequate, it is necessary to have and be matched therewith Components integrally can be only achieved best effect.Studies have shown that impeller blade suction surface is minimum close to entry zone pressure, have When will appear negative value, which is possible to that cavitation corrosion will occur.Under certain relative case, control blade or impeller inlet can be passed through Velocity of medium controls its inlet pressure, and so as to improve cavitation erosion, cavitation phenomenon, and to have rotation simultaneously existing for the fluid for entering impeller As at once this phenomenon causes fluid not flow by the situation of anticipation when entering blade, to bring energy consumption.Inlet whirl is adjusted Technology is adjusted at the beginning of the fifties in last century applied to wind energy conversion system operating condition, achieves preferable regulating effect.After the eighties in last century Phase, domestic scholars also set about studying from this direction, for a long time, have one for the racemization aspect of impeller of pump inlet fluid Fixed breakthrough.Spatial guide blade has many advantages, such as that radial dimension is small, can cooperate with impellers streamline smoothnesses such as mixed-flow pump or Pump for well, just As a kind of common water distributor.The mentality of designing is mainly to solve the above two large problems as starting point, for impeller of pump The rotation of inlet fluid and the control of flow velocity have certain improvement, but ineffective.

Summary of the invention

To solve the above-mentioned problems, the utility model provides a kind of vertical pump, and performance is high, and energy consumption is small.

To achieve the goals above, the utility model uses following technical scheme: a kind of vertical pump, including pump shaft, pump shaft Lower end outer wall be disposed with lower bearing, pump shaft periphery wall is equipped with axle sleeve, and impeller is connected on pump shaft axle body, and the pump shaft lower end is solid It is connected with pump shaft suction casing, the suction casing includes the pod for being connected to pump shaft lower end, and the pod outer peripheral surface is in streamline Type has the big blade of circumferentially uniform intervals arrangement on the outer peripheral surface of pod, is disposed with leaflet between two adjacent big blades Piece.

The utility model bring have the beneficial effect that by the two distinct types of blade of size by the wheel hub of suction casing with Shell connects, while supporting wheel hub and shell and forming an equal amount of space with hub shell, which is to convey Medium by space, two kinds of spacing with blades are uniformly distributed in wheel hub, on shell, and symmetrical arrangement more can make medium axisymmetric Into impeller, performance is high, and energy consumption is small.

Detailed description of the invention

Fig. 1 is the cross-sectional view of the utility model；

Fig. 2 is the big and small blade schematic diagram of the utility model；

Fig. 3 is the utility model suction casing schematic diagram.

Specific embodiment

As shown in Figs. 1-2, a kind of vertical pump, including pump shaft 10, the lower end outer wall of pump shaft 10 are disposed with lower bearing 2, pump shaft 10 periphery walls are equipped with axle sleeve, are connected with impeller 1 on 10 axle body of pump shaft, 10 lower end of pump shaft is fixed with pump shaft suction casing, described Suction casing include the pod 20 for being connected to 10 lower end of pump shaft, 20 outer peripheral surface of pod is streamlined, pod 20 There is the big blade 21 of circumferentially uniform intervals arrangement on outer peripheral surface, is disposed with vanelets 22 between two adjacent big blades 21.Institute The big blade 21 stated is 4, and the vanelets 22 are 4.

Further, the pod 20 is bowl-shape in what Open Side Down, and pod 20 connects by the way that bolt and pump shaft are fixed It connects.

The wheel hub of suction casing is connected with shell by size two distinct types of blade, while support both of them is simultaneously Formed eight an equal amount of spaces, the space are pumped (conveying) medium by space, and two kinds of spacing with blades are uniformly distributed In on wheel hub, shell, symmetrical arrangement can more make medium is axisymmetric to enter impeller.

The circumferential uniformly alternate arrangement of big and small blade, the medium for entering the part is separated, runoff is situated between during the space Reduction of the non axial rotation speed in gradually smaller fluid space as early as possible existing for matter itself, as shown in figure 3, being cut from M-M When surface current to the section N-N, it is ensured that the medium flowed out from each small space has equal or similar flow velocity, reduces conveying and is situated between Due to the shock energy consumption of the flow velocity brings such as not when matter is met, and the part is simple prismatic blade, and outlet blade angle is 90 °, The entrance impeller of the certifiable medium for leaving blade without spin, the effect of as its racemization embody, and equally, racemization removes and plays guarantee Except in the case of pumped (conveying) medium flowing more adapts to impeller blade, also acting as is reduced when pumped (conveying) medium meets since flow velocity is not brought not etc. Shock energy consumption effect.

Further, the big blade 21, vanelets 22 are prismatic blade, and leaf top is arc-shaped, and nock is inwardly. The application could be used without the prismatic blade of any distortion, can reach the condition of expectation state in the media flow that guarantee enters impeller Under, the manufacture of blade and difficulty of processing in production process greatly reduces, while improving economy.

Further, the access 201 of conveying oil is offered on the pod 20, oil is delivered to bearing 2 from access 201 With the junction of pump shaft 10.So that the medium of impeller inlet is entered bearing portion, plays lubrication, cooling.

As shown in figure 3, further, the thickness of the blade root section of the big blade 21 is greater than the thickness of leaf top section, described Vanelets 22 blade root section thickness be greater than leaf top section thickness.It is gradually thinning from the section M-M to N-N section blades, in this way A small spreading morphology is formd in overall structure, is more advantageous to conversion of the pumped (conveying) medium energy from kinetic energy to pressure energy, Impeller or vane inlet speed can be controlled as certain value, for reality, control and ensure that a certain extent the cavitation erosion of pump. The thinning trend of blade more makes the medium flowed out from each space have smaller shock when being detached from blade, reduces energy and disappears A possibility that consumption.

The characteristics of basic principles and main features and the utility model of the utility model have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these changes and improvements are both fallen in the range of claimed invention.This is practical new The claimed range of type is defined by the appending claims and its equivalent thereof.

Claims

1. a kind of vertical pump, including pump shaft (10), the lower end outer wall of pump shaft (10) are disposed with lower bearing (2), pump shaft (10) periphery Wall is equipped with axle sleeve, is connected with impeller (1) on pump shaft (10) axle body, and the pump shaft (10) lower end is fixed with pump shaft suction casing, special Sign is: the suction casing includes the pod (20) for being connected to pump shaft (10) lower end, and pod (20) outer peripheral surface is in It is streamlined, there are the big blade (21) of circumferentially uniform intervals arrangement, two adjacent big blades on the outer peripheral surface of pod (20) (21) vanelets (22) are disposed between.

2. vertical pump according to claim 1, it is characterised in that: the big blade (21), vanelets (22) are straight Blade, leaf top are arc-shaped, and nock is inwardly.

3. vertical pump according to claim 2, it is characterised in that: the big blade (21) is 4, the vanelets It (22) is 4.

4. vertical pump according to claim 3, it is characterised in that: the pod (20) is bowl-shape in what Open Side Down, Pod (20) is fixedly connected by bolt with pump shaft.

5. vertical pump according to claim 3, it is characterised in that: offer the logical of conveying oil on the pod (20) Road (201), oil are delivered to the junction of bearing (2) Yu pump shaft (10) from access (201).

6. -5 any vertical pump according to claim 1, it is characterised in that: the thickness of the blade root section of the big blade (21) Degree is greater than the thickness of leaf top section, and the thickness of the blade root section of the vanelets (22) is greater than the thickness of leaf top section.