CN206972600U - A kind of pump housing sealing structure - Google Patents

Abstract

It the utility model is related to a kind of pump housing sealing structure, the sealing structure is arranged between pump case and end cap, delivery chamber and suction room for separate pump, including sealing ring sealing structure and spring sealed structure, sealing ring sealing structure is the No.1 O-ring seal being arranged between pump case and end cap, spring sealed structure includes No. two O-ring seals and the spring being arranged between pump case and end cap, and No. two O-ring seals contact with pump case.Compared with prior art, the utility model sets up a kind of structure of spring encryption seal between delivery chamber and suction room, and spring is easy to dismount, and ring structure plays main seal redundancy.By preferred spring and sealing ring material, it is ensured that spring can effectively support ring structure under long term, while compensate part high temperature deformation amount；Ensure that sealing ring seals under long term not failing, and be easy to dismount.

Description

A kind of pump housing sealing structure

Technical field

It the utility model is related to pump technical field, and in particular to a kind of pump housing sealing structure.

Background technology

Sealing between pump case and end cap belongs to static seal structure, and the pump shaft end seal paid close attention to often different from people is (dynamic Sealing), the sealing importance at the structure is usually ignored by people.Sealed at this for pump delivery chamber (higher-pressure region) and pump suction chamber Isolation between (low-pressure area), the validity isolated at this directly affect the pump leakage extent of damage, and then the efficiency of pump is tight for isolated failure Decline again.During the conventional design of pump, generally structure configures O-ring sealing or configuration at pump case and end cap end is these Sheet gasket structure, without considering other excessive influences.But with pump at the scene long-play after, due to pump case with Extruding caused by end cap metal material expanded by heating etc., O-ring operating temperature is higher in addition, working environment rather harsh, at this The relatively easy aging of O-ring；Meanwhile pressure-bearing is relative so that sealing effectiveness declines between pump case and end cap.

Utility model content

The purpose of this utility model is exactly to provide a kind of sealing effectiveness the defects of overcoming above-mentioned prior art to exist Good, service life length pump housing sealing structure.

The purpose of this utility model can be achieved through the following technical solutions：A kind of pump housing sealing structure, the sealing knot Structure is arranged between pump case and end cap, and the delivery chamber and suction room, the sealing structure for separate pump seal including sealing ring Structure and spring sealed structure, the sealing ring sealing structure are the No.1 O-ring seal being arranged between pump case and end cap, institute State No. two O-ring seals and spring that spring sealed structure includes being arranged between pump case and end cap, No. two O-ring seals Contacted with pump case.

Sealing structure of the present utility model includes double sealing structure, and one of them is identical with existing sealing structure, separately One structure for adding spring using sealing ring, No. two O-ring seals can be pressed on pump case by spring, so, even if No. two O-shaped After sealing ring aging micro, it also can guarantee that No. two do not produce gap between O-ring seal and pump case, so as to ensure pump case and end cap Between seal degree.

Described end cap is provided with the shallow grooves for being used to place No.1 O-ring seal and for placing No. two O-shaped sealings The deep groove of circle and spring.

The depth of described shallow grooves is slightly less than the cross-sectional diameter of No.1 O-ring seal.It can so realize that No.1 is O-shaped Sealing ring is compressed when mounted, ensures sealing.

The depth of described deep groove is slightly less than the cross-sectional diameter and spring heights sum of No. two O-ring seals, initially During installation, the spring is in complete compressive state.It can so realize that No. two O-ring seals are compressed when mounted, Ensure sealing；And as pump longtime running, No. two O-ring seal agings, spring can be opened slowly, and offer two is O-shaped close The certain pressure of seal, it is that No. two O-ring seals are pressed with pump case all the time, ensures sealing.

Described shallow grooves are close to delivery chamber, and the deep groove is close to suction room.

Compared with prior art, the beneficial effects of the utility model are embodied in：

1. increasing simple structure on pump end cap, on the basis of pump end cap intensity is not changed, addition sealing redundancy, phase is used To relatively low cost and easily changeable structure, from the angle of Initiative Defense effectively reduce pump longtime running after O-ring aging bring Sealing property decline problem, strengthen pump operation reliability；

2. optimization processing technology, it is ensured that it is simple in construction and do not influence pump end cap dismounting, be easy to user's on-site maintenance etc. operate, And the structure is workable, the pump-type of a variety of different parameters can be efficiently applied to.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Wherein, 1 is pump case, and 2 be end cap, and 21 be shallow grooves, and 22 be deep groove, and 3 be delivery chamber, and 4 be suction room, and 5 be one Number O-ring seal, 6 be No. two O-ring seals, and 7 be spring.

Embodiment

Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before Put and implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited In following embodiments.

Embodiment 1

A kind of pump housing sealing structure, the sealing structure are arranged between pump case 1 and end cap 2, the delivery chamber 3 for separate pump With suction room 4, sealing structure includes sealing ring sealing structure and spring sealed structure, and sealing ring sealing structure is to be arranged on pump case No.1 O-ring seal 5 between 1 and end cap 2, spring sealed structure include be arranged between pump case 1 and end cap 2 No. two it is O-shaped Sealing ring 6 and spring 7, No. two O-ring seals 6 contact with pump case 1.

Sealing structure of the present utility model includes double sealing structure, and one of them is identical with existing sealing structure, separately No. two O-ring seals 6 can be pressed on pump case 1 by one structure for being added spring 7 using sealing ring, spring 7, so, even if two After number aging micro of O-ring seal 6, it also can guarantee that and do not produce gap between No. two O-ring seals 6 and pump case 1, so as to ensure pump Seal degree between shell 1 and end cap 2.

End cap 2 is provided with the shallow grooves 21 for being used to place No.1 O-ring seal 5 and for placing No. two O-ring seals 6 With the deep groove 22 of spring 7.

The depth of shallow grooves 21 is slightly less than the cross-sectional diameter of No.1 O-ring seal 5.It can so realize that No.1 is O-shaped close Seal 5 is compressed when mounted, ensures sealing.

The depth of deep groove 22 is slightly less than the cross-sectional diameter and the height sum of spring 7 of No. two O-ring seals 6, initial peace During dress, spring 7 is in complete compressive state.It can so realize that No. two O-ring seals 6 are compressed when mounted, ensure Sealing；And as pump longtime running, No. two agings of O-ring seal 6, spring 7 can be opened slowly, and No. two O-shaped sealings are provided 6 certain pressure are enclosed, are that No. two O-ring seals 6 are pressed with pump case 1 all the time, ensure sealing.

Shallow grooves 21 are close to delivery chamber 3, and deep groove 22 is close to suction room 4.

Claims (5)

1. a kind of pump housing sealing structure, the sealing structure are arranged between pump case and end cap, delivery chamber and suction for separate pump Enter the room, it is characterised in that the sealing structure includes sealing ring sealing structure and spring sealed structure, the sealing ring sealing knot Structure is the No.1 O-ring seal being arranged between pump case and end cap, and the spring sealed structure includes being arranged on pump case and end cap Between No. two O-ring seals and spring, No. two O-ring seals contacted with pump case.

2. a kind of pump housing sealing structure according to claim 1, it is characterised in that described end cap, which is provided with, to be used to place The shallow grooves of No.1 O-ring seal and the deep groove for placing No. two O-ring seals and spring.

3. a kind of pump housing sealing structure according to claim 2, it is characterised in that the depth of described shallow grooves is slightly less than The cross-sectional diameter of No.1 O-ring seal.

4. a kind of pump housing sealing structure according to claim 2, it is characterised in that the depth of described deep groove is slightly less than The cross-sectional diameter of No. two O-ring seals and spring heights sum, when initially installing, the spring is in complete compressive state.

5. according to a kind of any described pump housing sealing structure of claim 2~4, it is characterised in that described shallow grooves are close Delivery chamber, the deep groove is close to suction room.