CN2608724Y

CN2608724Y - Balanced cam rotor pump

Info

Publication number: CN2608724Y
Application number: CN 03226741
Authority: CN
Inventors: 郭松林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-10
Filing date: 2003-01-10
Publication date: 2004-03-31
Anticipated expiration: 2013-01-10

Abstract

The utility model discloses a balance type lobed rotor pump which comprises a shell, a stator, a rotor and a principle axle. The utility model is characterized in that; the stator is a ring, the lobed rotor that is designed symmetrically along the axial direction and the outside diameter of the lobed rotor are correspondingly installed in the inner hole of the stator, two movable clap boards are symmetrically arranged in the radial groove of the stator and divide the cavity formed by the inner hole and the lobed rotor in the stator into an intaking room and an exhaust room, the stator is also provided with a corresponding channel that communicates the exit and the intaking and exhaust rooms of the fluid. The utility model has the advantages of radial axial pressure balance property, high efficiency, stable output, low degree of noises, vibration and friction and integrates the advantages of the displacement pump and impeller pump. The utility model can adopt the working status of the fluid, gas and solid particles phase flow.

Description

Balancing type cam rotor pump

The utility model relates to a kind of rotor pump of conveyance fluid.It can be in wide field such as oil, chemical industry, machinery, traffic, pipe network, fire-fighting, environmental protection, fluid foods, as the feedway of Oil, Water, Gas or flowing mediums such as steam, chemical industry liquid material.

Current China is many to use centrifugal pump, screw pump, vane pump, eccentric rotarypump person in above-mentioned field.But in use there is some deficiency in these pumps, briefly are summarized as follows:

Centrifugal pump exists efficient lower, and inlet outlet pressure differential is little, and the inlet suction ability is low, need draw liquid during startup in advance, will lose pump function under liquid gas intermittent current operating mode.Be used for the low pressure and mass flow operating mode more.

The screw pump volume is big, noise big, make difficulty, rotating shaft and bearing will bear the huge axial and radial load that is produced by hydrodynamic pressure, and bearing life is short, inefficiency.

Vane pump easily leak, and blade is killed easily because lobe numbers is many.So use under the occasion of only suitable mesohigh, small flow, pure fluid.

Eccentric rotarypump produces strong vibration and noise because off-centre causes that the pump discharge pressure fluctuation is big, and main shaft will bear huge unbalanced force, and the bending deflection of axle is big during work.Only be adapted at using under the small flow low pressure operating mode.

Summary is got up, and the subject matter that above-mentioned prior art exists is: because the dynamic fluid pressure imbalance, rotor, main shaft, bearing will bear bigger radial and axial power, and cause the efficient of pump to reduce, and vibration and noise are bigger.

The utility model purpose will provide a kind of balancing type cam rotor pump that can overcome above-mentioned prior art deficiency exactly.

The technical solution of the utility model is as follows: balancing type cam rotor pump contains shell 1, stator 2, rotor 3, end cap, main shaft 5 and bearing thereof, fluid enters, discharge interface, rotor 3 is assemblied on the main shaft 5 with key connecting, main shaft arrives front and rear cover 8 by Bearing Installation, on 6, shell, end cap, stator is concentric and relative positioning with main shaft, and guarantee that corresponding junction plane and cavity are fixedly connected hermetically and be integral, it is characterized in that stator 2 integral body are the ring-type symplex structure, symmetric design form the cam follower 3 that high arc section and low arc section constitute by the relative arc surface in two relative cylndrical surface respectively with two, cooperate the endoporus that places stationary torus 2 with its cylndrical surface, two moving dividing plate 4 radial symmetric are arranged on the stationary torus 2 in the two corresponding notches, by respective action power (spring force as shown), the inner termination of moving dividing plate 4 keeps fitting tightly with the cam face of cam follower constantly, and will be separated into fluid suction chamber d and fluid discharge chamber e by the corresponding chambers that stationary torus endoporus and cam follower are surrounded, corresponding site in two moving dividing plate 4 notch both sides on the stationary torus is symmetrically arranged with two axial arc-shaped through-hole b, the port of arc-shaped through-hole b enters interface 10 with the rotor pump fluid that axially is provided with and is communicated with, close moving dividing plate position on the stationary torus 2, also be symmetrically arranged with the duct c that is communicated with suction chamber d and arc-shaped through-hole b, with the duct f of connection discharge chamber e with the ring cavity g that is formed by shell and stationary torus, ring cavity g discharges interface with the fluid of pump and is communicated with.Ring cavity g is used to compile the fluid of discharging from pump chamber, and the effect of steady output flow and pressure pulsation is arranged.

The pump core body that the utility model is made of stationary torus and cam follower, the both has the full symmetrical configuration design characteristic, therefore, the suction chamber d of stationary torus, cam follower and moving dividing plate and formation thereof and discharge chamber e, all be in radially dynamically symmetrical in twos form in any moment, the hydrodynamic pressure that is produced is the mutual balance of benchmark with the axle center, promptly is not subjected to radial and axial load on the main shaft, main shaft and bearing thereof promptly are similar to operation under the unloaded state with the pure state of turning round.Like this, main shaft is with regard to radially deflection deformation of unlikely generation, vibration, noise and additional friction, and when being used for liquid medium, cam follower turns round under liquid film, and rotor pump is operated in perfect condition, and pump performance and quality more can be promoted.

In specific embodiment, take corresponding measure the utility model that above-mentioned excellent results is not only arranged, also can have displacement pump good seal performance, volumetric efficiency height concurrently, the inlet suction ability is strong.Wide and the wing pump stability of rotation of outlet pressure scope, rate of discharge and pressure pulsation are little, noise is low, high both advantage of mechanical efficiency.And can adapt to and contain liquid phase, gas phase, solid particle multiphase flow working state, as the feedway of multiphase flow.

Description of drawings

Fig. 1 balancing type cam rotor pump structure diagram (N-N sectional view).

Fig. 2 balancing type cam rotor pump double pump series connection structure sketch (M-O-M longitudinal sectional view.)

Fig. 3, Fig. 4 cam follower structure and blowdown ditch artwork.

Below in conjunction with accompanying drawing illustrated embodiment is described further

The embodiment of double pump series connection structure shown in the accompanying drawing 2 not only has all advantages of aforementioned the utility model, can eliminate the zero output transient state of single pump structure again, makes superior effect of the present utility model perform to ultimate attainment.The double pump series connection structure adopts two covers core component of the present utility model, spacer ring 7 in therebetween setting up, two cam followers are then with the phase difference an angle of 90 degrees, the front and back string is loaded on the same main shaft 5, and with other corresponding spare parts such as shell, front and rear cover, in aggregates by the assembling of screw rod serial connection, the fluid inlet place also is provided with cowling 9.

For pump can be worked under the multiphase flow state, the present embodiment design has the many measures that prevent solid particle damage pump surface of the work.

1) is provided with gill tooth s at the tubaeform inner chamber inlet position of entrance sleeve 10 expansions, flow velocity reduces during fluid process gill tooth s section, the heavier bigger solid particle of a part will fall at the bottom of the gill teeth groove, and then the chute u that makes along gill tooth bottom is collected in entrance sleeve 10 inner chambers bottom with the circular groove y of loudspeaker large port adjacency.And can from corresponding bottom tap hole k, get rid of in good time.

2) adjacent rotor outside dimension position is provided with a plurality of dirty well j that deposit on protecgulum 8, bonnet 6, middle spacer ring 7 and end face that cam follower contacts.When fluid flow through suction chamber d and discharges chamber e, most of solid particle often flowed out with fluid, and the minority particulate will flow with the intersection of protecgulum 8, bonnet 6, middle spacer ring 7 along cam follower 3.

Because the centrifugal force that produces during cam follower 3 rotations will make particle flow to outer radius along the cam face of cam follower 3, particle will fall into deposits dirty well j.Thereby reduce damage parts working surface.

3) on the first half cylndrical surface of two sections relative peripheries of cam follower 3 and switching intermediate location place have a plurality of blowdown groove p, be used for retaining or discharging solid particle.

Because above-mentioned measure, the ability of anti-solid particle damage of the present utility model is strengthened, and makes it have the ability of carrying the multiphase flow that contains solid particle.

Claims

1, a kind of balancing type cam rotor pump, contain shell (1), stator (2) rotor (3), end cap, main shaft (5) and bearing thereof, fluid enters, discharge interface, rotor (3) is assemblied on the main shaft (5) with key connecting, main shaft arrives front and rear cover (8 by Bearing Installation, 6) on, shell, end cap, stator is concentric and relative positioning with main shaft, and guarantee that corresponding junction plane and cavity are fixedly connected hermetically and be integral, it is characterized in that stator (2) integral body is the ring-type symplex structure, symmetric design form the cam follower (3) that high arc section and low arc section constitute by the relative arc surface in two relative cylndrical surface respectively with two, cooperate the endoporus that places stationary torus (2) with its cylndrical surface, two moving dividing plate (4) radial symmetric are arranged in stationary torus (2) the last two corresponding notches, under the corresponding force effect, the inner termination of moving dividing plate (4) keeps fitting tightly with the cam face of cam follower constantly, and will be separated into fluid suction chamber (d) and fluid discharge chamber (e) by the corresponding chambers that stationary torus endoporus and cam follower are surrounded, corresponding site in two moving dividing plate (4) notch both sides on the stationary torus is symmetrically arranged with two axial arc-shaped through-holes (b), one port of arc-shaped through-hole (b) enters interface (10) with the rotor pump fluid that axially is provided with and is communicated with, stationary torus (2) is gone up near moving dividing plate position, also be symmetrically arranged with the duct (c) that is communicated with suction chamber (d) and arc-shaped through-hole (b), with the duct (f) of connection discharge chamber (e) with the ring cavity (g) that is formed by shell and stationary torus, ring cavity (g) is discharged interface with the fluid of pump and is communicated with.

2, by the said balancing type cam rotor pump of claim 1, it is characterized in that: the pump core body that constitutes by stator and cam follower, therebetween set up middle spacer ring (7), wherein two cam followers (3) are then with the phase difference an angle of 90 degrees, the front and back string is loaded on the same main shaft (5), and with shell, front and rear cover etc. by screw rod be connected in series the assembling in aggregates, the fluid inlet place also is provided with cowling (9).

3, by claim 1,2 said balancing type cam rotor pumps, it is characterized in that:

1) is provided with gill tooth (s) at the tubaeform inner chamber inlet position of entrance sleeve (10) expansion, be manufactured with chute (u) along gill tooth bottom, be shaped on circular groove (y) with loudspeaker large port adjoiner in entrance sleeve (10) inner chamber, corresponding particulate tap hole (k) is arranged at circular groove (y) bottom;

2) adjacent rotor outside dimension position is provided with a plurality of dirty wells (j) of depositing on protecgulum (8), bonnet (6), middle spacer ring (7) and end face that cam follower contacts;

3) on the first half cylndrical surface of two sections relative peripheries of cam follower (3) and switching intermediate location place have a plurality of blowdown grooves (p).