CN206972511U - The pump of bearing with trapped fuel - Google Patents

Abstract

The utility model provides a kind of pump of the bearing with trapped fuel, including a pump case, the pump case forms a suction side, an outlet side and the connection end with motor, the pump case internal package has transmission device, the transmission device passes through a jackshaft and motor connection, the jackshaft is set in bearing, and two ends of the bearing are fixed with packing ring, makes to form confined space between the bearing and the jackshaft.Use the pump with said structure, because bearing and jackshaft form confined space by packing ring, so when installing at the beginning, lubricant grease is added into packing ring, it is sealed in by packing ring in jackshaft and bearing, can Infinite Cyclic use, then without as in the prior art in addition set pump nozzle, reduce pump making technology difficulty and material cost.

Description

The pump of bearing with trapped fuel

Technical field

It the utility model is related to pump field, more particularly to a kind of pump of the bearing with trapped fuel fat.

Background technology

Screw pump is to engage spatial volume change and movement with what screw rod was formed to convey liquid or be allowed to by the pump housing The drum pump of supercharging.Screw pump is divided into single-screw (single screw) pump, Quimby pump and three screw pump etc. by screw rod number.When driving screw rod rotates When, drive the driven screw engaged to rotate together, the screw rod engagement spatial volume of suction chamber one end gradually increases, pressure drop It is low.Liquid enters engagement spatial volume under differential pressure action.When volume increases to maximum and forms an annular seal space, liquid just exists One by one continuously along axial movement in annular seal space, until discharge chamber one end.At this moment the screw rod engagement space for discharging chamber one end holds Product is gradually reduced, and liquid is discharged.The operation principle of screw pump is similar to gear pump, simply be instead of in structure with screw rod Gear, with flow trim, pressure fluctuation is small, has low suction capacity, noise, efficiency high, long lifespan, reliable operation, especially Vortex is not formed during pumped (conveying) medium, to the sticky insensitive of medium, can transfer of highly viscous medium, therefore obtained widely should With.

Fig. 1 is refer to, screw pump of the prior art, is followed successively by suction side, the spiral shell being wrapped in pump case 03 from bottom to top Bar portion position, outlet side, driving shaft 01 (being also jackshaft), screw rod and driving shaft 01 and motor connection in screw parts.Actively Axle 01 is typically provided power, is transmitted to driving shaft 01 by shaft coupling, then driven by shaft coupling and motor connection, motor Screw rod in pump case rotates, so that suction side starts to absorb liquid.

In general, one end that driving shaft 01 is connected with shaft coupling are provided with bearing 02, in use, it is necessary in bearing 02 top it is supporting setting pump nozzle 04, periodically by pump nozzle 04 into bearing 02 shot lubrication grease, maintain bearing 02 just Often running, this undoubtedly adds the technology difficulty and material cost when screw pump makes.

Utility model content

The utility model provides a kind of pump of the bearing with trapped fuel, for solving the above problems.

To reach above-mentioned purpose, the utility model provides a kind of pump of the bearing with trapped fuel, including a pump case, described Pump case, which forms a suction side, an outlet side and the connection end with motor, the pump case internal package, transmission device, the biography Dynamic device is set in bearing by a jackshaft and motor connection, the jackshaft, and two ends of the bearing are fixed with Packing ring, make to form confined space between the bearing and the jackshaft.

Preferably, the packing ring uses rubber.

Preferably, the bearing is rolling bearing.

Preferably, the packing ring is fixed on the bearing inner race.

Preferably, the internal diameter of the packing ring is equal to the external diameter of jackshaft, the external diameter of the packing ring is equal to the axle The external diameter of the inner ring held.

Preferably, the bearing is located in the pump case.

Compared with prior art, the beneficial effects of the utility model are：The utility model provides a kind of with trapped fuel The pump of bearing, including a pump case, the pump case form a suction side, an outlet side and the connection end with motor, the pump case Internal package has transmission device, and the transmission device is set in bearing by a jackshaft and motor connection, the jackshaft, Two ends of the bearing are fixed with packing ring, make to form confined space between the bearing and the jackshaft.Use tool There is the pump of said structure, because bearing and jackshaft form confined space by packing ring, then when installing at the beginning, in axle Lubricant grease is added into seal ring, is sealed in by packing ring in jackshaft and bearing, you can Infinite Cyclic uses, then without as existing Have in technology and pump nozzle is set in addition like that, reduce the technology difficulty and material cost of pump making.

Brief description of the drawings

Fig. 1 is sectional view at pump bearing of the prior art；

Fig. 2 is sectional view at pump bearing provided by the utility model.

In Fig. 1：01- driving shafts, 02- bearings, 03- pump cases, 04- pump nozzles；

In Fig. 2：10- jackshafts, 20- bearings, 21- inner rings, 30- pump cases, 40- packing rings.

Embodiment

To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this The embodiment of utility model is described in detail.

To reach above-mentioned purpose, the utility model provides a kind of pump of the bearing with trapped fuel, including a pump case 30, institute Stating one suction side of the formation of pump case 30, an outlet side and the connection end with motor, the internal package of pump case 30 has transmission device, The transmission device is set in bearing 20 by a jackshaft 10 and motor connection, the jackshaft 10, the present embodiment axis It is rolling bearing to hold 20, and rolling bearing is fixed on inside pump case 30, and jackshaft 10 passes out of bearing 20, passes through shaft coupling and electricity Machine connects.

Packing ring 40 is fixed with two ends of the bearing 20, makes shape between the bearing 20 and the jackshaft 10 Into confined space, it is preferred that packing ring 40 uses rubber, and packing ring 40 is fixed on the inner ring of the bearing 20, is Make to form confined space between bearing 20 and the jackshaft 10, the internal diameter of the packing ring 40 is equal to the outer of jackshaft 10 Footpath, the external diameter of the packing ring 40 is equal to the external diameter of the inner ring 21 of the bearing 20, so when mounted, in jackshaft 10 and axle Lubricant grease is injected between holding 20, lubricant grease is enclosed between jackshaft 10 and bearing 20 using packing ring 40, so lubricated Grease can Infinite Cyclic use, will not flow out outside jackshaft 10 and bearing 20.

The utility model provides a kind of pump of the bearing with trapped fuel, including a pump case 30, and the pump case 30 forms one Suction side, an outlet side and the connection end with motor, the internal package of pump case 30 have transmission device, and the transmission device leads to The connection of a jackshaft 10 and motor is crossed, the jackshaft 10 is set in bearing 20, and two ends of the bearing 20 are fixed There is packing ring 40, make to form confined space between the bearing 20 and the jackshaft 10.Using the pump with said structure, by Confined space is formd by packing ring 40 in bearing 20 and jackshaft 10, then when installing at the beginning, add in packing ring 40 Lubricant grease is added, is sealed in by packing ring 40 in jackshaft 10 and bearing 20, you can Infinite Cyclic uses, then without as existing Pump nozzle is set in addition like that in technology, reduces the technology difficulty and material cost of pump making.

Obviously, it is new without departing from this practicality can to carry out various changes and modification to utility model by those skilled in the art The spirit and scope of type.If these modifications and variations of the present utility model belong to the utility model claims and its equivalent technologies Within the scope of, then the utility model is also intended to including these changes and modification.

Claims (6)

1. a kind of pump of the bearing with trapped fuel, including a pump case, the pump case formed a suction side, an outlet side and with electricity The connection end of machine, the pump case internal package have a transmission device, and the transmission device is described by a jackshaft and motor connection Jackshaft is set in bearing, it is characterised in that two ends of the bearing are fixed with packing ring, make the bearing and described Confined space is formed between jackshaft.

2. the pump of the bearing with trapped fuel as claimed in claim 1, it is characterised in that the packing ring uses rubber.

3. the pump of the bearing with trapped fuel as claimed in claim 2, it is characterised in that the bearing is rolling bearing.

4. the pump of the bearing with trapped fuel as claimed in claim 3, it is characterised in that the packing ring is fixed on the bearing On inner ring.

5. the pump of the bearing with trapped fuel as claimed in claim 4, it is characterised in that the internal diameter of the packing ring is equal to centre The external diameter of axle, the external diameter of the packing ring are equal to the external diameter of the inner ring of the bearing.

6. the pump of the bearing with trapped fuel as claimed in claim 1, it is characterised in that the bearing is located in the pump case.