CN202326209U - Gear pump - Google Patents

Abstract

The utility model discloses a gear pump. The gear pump comprises a pump body, as well as a front pump cover and a rear pump cover which are connected with the pump body, wherein the end faces of the front pump cover and the rear pump cover are provided with chamfer angles. According to the gear pump, the oil permeation between compressive plates and gears is facilitated, thus the compressive plates and the gears are fully lubricated, and the service life of the gear pump is prolonged.

Description

A kind of gear pump

Technical field

The utility model relates to a kind of gear pump.

Background technique

Gear pump is through being meshing with each other of driving gear in the pump housing and driven gear, and is divided into two independent parts, i.e. suction chamber and discharge side to the whole active chamber of the pump housing.Gear pump in the running; Driving gear drives the driven gear rotation, when gear is thrown off from being engaged to, produces vacuum in suction chamber one side; Make fluid under the atmospheric pressure effect, get into suction chamber; The fluid that is inhaled into is full of each tooth paddy of gear, and discharge side one side is made it to produce high pressure because gear engagement and fluid constantly bring into simultaneously, and fluid is squeezed in the pipeline through exhaust port under the high pressure effect.

Existing gear pump generally includes the pump housing, gear, front pump cover and rear pump cover; When high-speed gear turns round, have a small amount of fluid and overflow, existing gear pump through spill port; The end face of its front pump cover and rear pump cover is not provided with chamfering; The fluid that overflows is not easy to be penetrated between pressing plate and the gear, makes between pressing plate and the gear and can not get sufficient lubrication, has reduced the working life of gear pump.

The model utility content

For solving the problems of the technologies described above, the utility model provides a kind of gear pump, can make fluid be penetrated into pressing plate and gear easily, make between pressing plate and the gear and obtain sufficient lubrication, prolonged the working life of gear pump.

For achieving the above object, the technological scheme of the utility model is following: a kind of gear pump, comprise the pump housing, and front pump cover that is connected with the pump housing and rear pump cover, wherein the end face of front pump cover and rear pump cover all is provided with chamfering.

Pass through technique scheme; The utility model is provided with chamfering at the front pump cover of gear pump and the end face of rear pump cover; The fluid that helps the spill port backflow is penetrated between pressing plate and the gear, makes between pressing plate and the gear and obtains sufficient lubrication, prolongs the working life of gear pump.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below.

Fig. 1 is the sectional view of the disclosed a kind of gear pump body of the utility model embodiment.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment will be carried out clear, intactly description.

Like Fig. 1, the utility model provides a kind of gear pump, comprises the pump housing 1, and the front pump cover 3 and rear pump cover 4 that are connected with the pump housing 1, and front pump cover 3, and all is provided with chamfering 6 on the end face of rear pump cover 4.In the front pump cover 3 and the pump housing 1 between the built-in gear 2, and be provided with pressing plate 5 between the built-in gear 2 in the rear pump cover and the pump housing 1; Wherein, chamfering 6 just is located on front pump cover 3 and the end face that pressing plate 5 contacts, and on rear pump cover 4 and the end face that pressing plate 5 contacts.Because chamfering 6 makes the end face of front pump cover 3 and rear pump cover 4 have certain gradient, be penetrated between pressing plate and the gear so help the fluid of spill port backflow, make between pressing plate and the gear and obtain sufficient lubrication, prolong the working life of gear pump.

It should be noted that the size that does not limit chamfering in this enforcement row, also can design the chamfering size according to actual conditions; In addition, the chamfering of mentioning in this enforcement row can also be made as fillet, and the size of same fillet can design according to actual conditions.

To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (1)

1. a gear pump comprises the pump housing, and the front pump cover and the rear pump cover that are connected with the said pump housing, and it is characterized in that: the end face of said front pump cover and said rear pump cover all is provided with chamfering.

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