CN2443172Y - External circulation rotor thickened oil pump - Google Patents

Abstract

The utility model relates to an external circulation rotor thick oil pump, which comprises a valve body, a pump body, a bearing case body, rotors and a driving mechanism which are fixed into a whole, wherein, the rotors and the driving mechanism are assembled in the bearing case body; synchronous gears which are engaged mutually are arranged on a driving shaft and a driven shaft which are respectively fixed with the rotors; the outer margins of wheel blades of the two rotors are staggered for distribution and respectively matched with the surface of the cylindrical cavity wall of each pump body; the outer circumference of the wheel blade of one of the rotors is matched with the partition curved surface on the wall of the other rotor; an inlet and an outlet of the pump body are respectively connected with a path of a pressure control device. The utility model has the advantages of reasonable configuration of members, stable running, high safety, low noise, large flow capacity, obvious improvement of pump efficiency, and long service life of the external circulation rotor thick oil pump.

Description

Outside circulation rotor thick oil pump

The utility model relates to a kind of cam rotor type displacement pump, particularly a kind of outside circulation rotor thick oil pump that is suitable for carrying sticky material and high viscosity fluid.

As everyone knows, carry the displacement pump of various media accurate, good from absorption because of its flow, thus be widely used, as gear pump, sliding vane pump, screw pump etc.But these pumps are subjected to the influence of factors such as fed sheet of a media viscosity, and versatility is relatively poor.Low because of easily damaged parts life-spans such as its component manufacturing process complexity, especially piston ring, valve seat, valve blocks in addition, need often to change, more increased maintenance load, reduced working efficiency, strengthened cost.

The purpose of this utility model provides a kind of outside circulation rotor thick oil pump, the preparation of its member rationally, effectively overcome the shortcoming of low, versatility difference of the easily damaged parts life-span that prior art exists, widened the application area of pump, it operates steadily, safe and reliable, noise is little, flow is big, obviously improves the working life of pump efficiency and pump.

The purpose of this utility model is achieved in that this device comprises affixed all-in-one-piece valve body, the pump housing, bearing housing and assembles its interior rotor and driving mechanism, wherein install respectively on the driving shaft, driven shaft of rotor intermeshing synchromesh gear is arranged, the wheel blade excircle of two rotors is interspersed, and match with pump housing cylindrical cavity wall surface separately respectively, partition curved surface on a rotor wheel blade excircle and another rotor wall matches, and the import and export of the pump housing are joined with the passage of pressure control device respectively.

Because the utility model adopts synchromesh gear to drive master and slave moving axis rotation, thus compare with crank drive, vibrate little, noise is low.The rotor that is packed on the master and slave moving axis distributes different with the rotor of other transfer pump, two rotor excircles are interspersed, not directly engagement contact, but match with the cylindrical cavity of the pump housing separately wall surface that excircle matches respectively, and match with partition curved surface on another rotor wall by rotor wheel blade excircle, form the continuous generating period variation of the endoceliac working chamber volume of pump, suck continuously and discharge, finish the conveying task thereby will be transferred medium.Join with the passage of pressure control device respectively because of the import and export of the pump housing,,, realize safe and reliable job requirement to guarantee pump in smooth running so can adjust to the working pressure of pump.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a kind of concrete structure schematic representation of the utility model.

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

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

Describe concrete structure of the present utility model and working condition in detail according to Fig. 1-3.This device comprises the pump housing 5 that has inlet/outlet and two circular cylindrical cavities, bearing housing 6, and end cap 10 installs the driving shaft 11 and the parts such as driven shaft 13 and pressure control device of the driving mechanism of rotor 4 and synchromesh gear 12 respectively.Its middle pump body 5 and flow passage components etc. be transferred the contacted parts of medium, should determine the material (as cast iron, carbon steel, stainless steel), the seal form (conventional seals, sylphon seal) that adopt according to operating modes such as the temperature of medium, pressure, viscosity, corrosivity.The rotor 4 that has wheel blade is fixed on driving shaft 11 with axle head gland 3 respectively, the axle head of driven shaft 13.Diaxon supports by rolling bearing respectively, and carries out axially locating with axle sleeve 7, thrust bearing 8, locking nut 9, utilizes the seal arrangement sealing, with anti-leak.Above a pair of intermeshing synchromesh gear 12 of bearing housing 6, lubricating cup is set, be used for this independently lubricated outboard bearing group and gear 12 is lubricated.Wheel blade on the rotor 4 can be provided with single leaf, double leaf or leafy according to actual needs, and present embodiment adopts two lobe rotor.The wheel blade excircle of two rotors 4 is interspersed, and does not promptly mesh contact each other.Each wheel blade excircle matches with pump housing cylindrical cavity wall surface separately respectively, and the partition curved surface 16 on one of them rotor wheel blade excircle and another rotor wall matches.The matching surface that utilization matches plays a part separate pump low pressure suction chamber and high pressure discharge side in the pump housing 5.Rotor 4 constantly rotates, and makes the continuous generating period variation of working chamber volume, thereby fluid is constantly sucked and discharges, and finishes whole suction process.Each rotor 4 forms outside circulation so this device is referred to as outside circulation rotor thick oil pump in rotation process.Because of not directly engagement between rotor, so both helped improving the working life of pump, can widen the application area of pump again, the dielectric viscosity scope that can carry is big, can also carry the medium that contains granulometric impurity or suspended solid.For guaranteeing the steadily various media of conveying of pump, pressure control device is set at the inlet/outlet place of the pump housing 5 comprises valve body 2, valve seat 18, safety valve 1, spring seat 19, cluster spring 21, push rod 20, adjust parts such as screw rod 22, protective hat 23 in addition.Wherein the safety valve 1 of pressure control device utilizes push rod 20, two spring seats 19 and cluster spring 21 thereof and adjusts screw rod 22 and is assembled on the valve seat 18.Valve body 2 inner chambers are separated into two chambeies by safety valve 1, and utilize passage that two chambeies are connected with the inlet/outlet of the pump housing 5 respectively, at any time pumping pressure is adjusted, the assurance pump is worked safely and reliably, and this pressure control device can be arranged to unidirectional control and two kinds of forms of two-way control.Two safety valves 1 and matching parts thereof are promptly adopted in two-way control.Working principle and unidirectional control are basic identical.On the valve body 2 of pressure control device, the insulation jacket 14 that communicates with thermal medium can also be set, and in insulation jacket 14, feed thermal medium (as deep fat, hot steam etc.) by connection nipple 15.When the pump housing is worked, import thermal medium and can reduce solidifying and bond in the pump housing 5 such as sticky material medium.The usefulness bolt is affixed is integral for the valve body 2 of this device and the pump housing 5, bearing housing 6.The inlet/outlet of the pump housing 6 can be provided with as required, and inlet/outlet both can be positioned on the same axis, and the flow direction that is transferred medium can be put down and into be cleared or the end is advanced to eject; Inlet/outlet also can be positioned on the mutual vertical axis, is transferred medium and equals form such as into eject.

During use, power is passed to a pair of synchromesh gear 12 by driving shaft 11, drives driven shaft 13 and rotates synchronously, meanwhile, drives the rotor 4 that is packed on the axle separately and does poor bit synchronization rotation.Surperficial buffer action that rotor 4 utilizes and the pump housing 5 inner chambers match in rotor 4 continuous rotating process, makes the continuous generating period variation of pump work chamber volume, thereby medium is constantly sucked and discharges.Because this revolution speed is lower, suction capacity is strong, makes the relatively poor high-viscous media of mobile performance have sufficient time and speed to be full of cavity, so be very suitable for carrying high-viscous media.Due to the rotor special construction, pump internal insulation sealing surface is big, in let out less, so the pump efficiency height can reach the high-pressure delivery medium.In addition, to carrying rarer medium that good adaptability is also arranged.

Claims (4)

1, a kind of outside circulation rotor thick oil pump, comprise affixed all-in-one-piece valve body, the pump housing, bearing housing and assemble its interior rotor and driving mechanism, it is characterized in that installing respectively the driving shaft of rotor, intermeshing synchromesh gear is arranged on the driven shaft, the wheel blade excircle of two rotors is interspersed, and match with pump housing cylindrical cavity wall surface separately respectively, partition curved surface on a rotor wheel blade excircle and another rotor wall matches, and the import and export of the pump housing are joined with the passage of pressure control device respectively.

2, reciprocating pump according to claim 1 is characterized in that the safety valve of pressure control device utilizes push rod, spring seat and adjustment screw rod group to be contained on the valve seat.

3, reciprocating pump according to claim 1 is characterized in that on the valve body of pressure control device the insulation jacket that communicates with thermal medium being arranged.

4, reciprocating pump according to claim 1, the inlet/outlet that it is characterized in that the pump housing are positioned on the same axis or mutually on the vertical axis.

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