CN206478005U - A kind of mechanical sealing structure for pump for conveying easy setting medium - Google Patents

A kind of mechanical sealing structure for pump for conveying easy setting medium Download PDF

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Publication number
CN206478005U
CN206478005U CN201720028487.3U CN201720028487U CN206478005U CN 206478005 U CN206478005 U CN 206478005U CN 201720028487 U CN201720028487 U CN 201720028487U CN 206478005 U CN206478005 U CN 206478005U
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CN
China
Prior art keywords
axle sleeve
ring
pump
mechanical sealing
cover
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Application number
CN201720028487.3U
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Chinese (zh)
Inventor
官志刚
陈建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU JIAN'AN PUMP INDUSTRY MANUFACTURING Co Ltd
Original Assignee
JIANGSU JIAN'AN PUMP INDUSTRY MANUFACTURING Co Ltd
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Priority to CN201720028487.3U priority Critical patent/CN206478005U/en
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Abstract

The utility model discloses a kind of mechanical sealing structure for pump for conveying easy setting medium, including the first mechanical sealing mechanism, is set in receiving space close to pump cover side, at the cooperation to seal pump cover and axle sleeve;Second mechanical sealing mechanism, is set in receiving space close to machine sealed cover side, at the cooperation of sealer sealed cover and axle sleeve;Pump cover is provided with the cavity for being used for disposing impeller, and end lateral surface of the axle sleeve close to impeller side is provided with thread groove, to produce the conveying power towards impeller side when axle sleeve rotates.The utility model axle sleeve is provided with thread groove, axle sleeve can send out the medium entered between axle sleeve and the first mechanical sealing mechanism fit clearance when rotating, it can effectively prevent medium from being solidified in the fit clearance of axle sleeve and the first mechanical sealing mechanism, have the advantages that fault rate is low, long lifespan.

Description

A kind of mechanical sealing structure for pump for conveying easy setting medium
Technical field
The utility model is related to No leakage chemical industry pump technical field, and in particular to a kind of pump machine of the easy setting medium of conveying Tool sealing structure.
Background technology
No leakage chemical pump field usually using mechanical seal to seal pumped (conveying) medium, prevent conveyed medium from letting out Reveal in air.
According to the difference of chemical pump institute pumped (conveying) medium, there is also difference for the structure of mechanical seal.In conventional application process It was found that, easy setting medium be mechanical seal structure than medium difficult to deal with, easy setting medium is particularly susceptible into impeller terminal In the fit clearance of tool sealing mechanism and axle sleeve, and solidified in the fit clearance of mechanical sealing mechanism and axle sleeve, cause machinery Rotating ring and seal ring of moving ring in sealing mechanism can not be along axle sleeve axial slips, and mechanical seal structure fault rate is high, short life.
Utility model content
The purpose of this utility model is to provide a kind of mechanical sealing structure for pump for conveying easy setting medium.
To realize above-mentioned utility model purpose, the utility model is adopted the following technical scheme that:
A kind of mechanical sealing structure for pump for conveying easy setting medium, including pump cover, machine sealed cover and axle sleeve, the pump cover Relative with the machine sealed cover to connect setting, axle sleeve is set through the pump cover and the machine sealed cover, axle sleeve and the pump cover, institute The machine sealed cover of stating surrounds to form a receiving space, in addition to the first mechanical sealing mechanism, close to described in the receiving space Pump cover side is set, at the cooperation to seal the pump cover and the axle sleeve;
Second mechanical sealing mechanism, is set in the receiving space close to the machine sealed cover side, described to seal At the cooperation of machine sealed cover and the axle sleeve;
First mechanical sealing mechanism include the first spring case, the first rotating ring, the first seal ring of moving ring, the first stationary ring, First stationary ring sealing ring, first rotating ring is arranged between first spring case and first stationary ring, first bullet Spring box one end is held on the annular projection that axle sleeve lateral surface is provided with, and the first rotating ring is held in described by the stretching of other end elasticity First stationary ring one end, so that first rotating ring has the free degree along the axle sleeve axial displacement, first stationary ring passes through Be connected parallel to the axially arranged alignment pin of the axle sleeve with the pump cover, the first stationary ring sealing ring support be arranged at it is described Between first stationary ring and the pump cover, first seal ring of moving ring, which is supported, is arranged at first rotating ring and first spring Between box;
The pump cover is provided with the cavity for being used for disposing impeller, and the axle sleeve is set on the end lateral surface of impeller side There is thread groove, to produce the conveying power towards impeller side when the axle sleeve rotates.
As the further improved technical scheme of the utility model, second mechanical sealing mechanism includes second spring Box, the second rotating ring, the second seal ring of moving ring, the second stationary ring, the second stationary ring sealing ring, second rotating ring are arranged at described second Between spring case and second stationary ring, described second spring box one end is held in the annular projection that axle sleeve lateral surface is provided with On, other end elasticity is stretched out is held in described second stationary ring one end by the second rotating ring, so that second rotating ring has along described The free degree of axle sleeve axial displacement, second stationary ring parallel to the axially arranged alignment pin of axle sleeve and machine sealed cover by connecting Connect, the second stationary ring sealing ring, which is supported, to be arranged between second stationary ring and the machine sealed cover, and second rotating ring is close Seal, which is supported, to be arranged between second rotating ring and the second spring box.
As the further improved technical scheme of the utility model, the pump cover is provided with flushing liquor import, the machine envelope Gland provided with flushing liquor export, the flushing liquor import and the flushing liquor outlet with the receiving space inside UNICOM, Will import or export the receiving space for the flushing liquor for lubricating and cooling down.
As the further improved technical scheme of the utility model, pump shaft, the pump shaft and institute are equipped with the axle sleeve State and rotary stopper is realized by keyway and key between axle sleeve, impeller is connected with pump shaft end.
As the further improved technical scheme of the utility model, the pump cover is docked at cooperation with the machine sealed cover Provided with pump cover sealing ring.
It is of the present utility model to have technical effect that relative to prior art:
The utility model axle sleeve is provided with thread groove, can will enter axle sleeve and the first mechanical sealing mechanism when axle sleeve rotates Medium between fit clearance is sent out, and can effectively prevent medium from being coagulated in the fit clearance of axle sleeve and the first mechanical sealing mechanism Gu, have the advantages that fault rate is low, long lifespan.
Brief description of the drawings
Fig. 1 is that a kind of structure for the mechanical sealing structure for pump for conveying easy setting medium is shown in the utility model embodiment It is intended to;
Fig. 2 is the close-up schematic view at the first mechanical sealing mechanism in the utility model embodiment;
Fig. 3 is the structural representation of the utility model embodiment bottom bracket axle.
Embodiment
The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party Formula is not intended to limit the utility model, structure that one of ordinary skill in the art is made according to these embodiments, method or Conversion functionally is all contained in protection domain of the present utility model.
A kind of embodiment of the present utility model presented below:
Refer to Fig. 1 to 3, a kind of mechanical sealing structure for pump for conveying easy setting medium, including pump cover 1, machine sealed cover 2 With axle sleeve 3, the pump cover 1 and the machine sealed cover 2 connect setting relatively, and axle sleeve 3 runs through the pump cover 1 and the machine sealed cover 2 Set, axle sleeve 3 and the pump cover 1, the machine sealed cover is 2-in-1 encloses to form a receiving space 4, in addition to the first mechanical seal machine Structure, is set in the receiving space 4 close to the side of pump cover 1, at the cooperation to seal the pump cover 1 and the axle sleeve 3;
Second mechanical sealing mechanism, is set in the receiving space 4 close to the side of machine sealed cover 2, to seal At the cooperation for stating machine sealed cover 2 and the axle sleeve 3;
First mechanical sealing mechanism includes the first spring case 51, the first rotating ring 52, the first seal ring of moving ring 53, first Stationary ring 54, the first stationary ring sealing ring 55, first rotating ring 52 are arranged at first spring case 51 and first stationary ring 54 Between, described one end of first spring case 51 is held on the annular projection 31 that the lateral surface of axle sleeve 3 is provided with, and other end elasticity is stretched out First rotating ring 52 is held in described one end of first stationary ring 54, so that first rotating ring 52 has along the axial position of the axle sleeve 3 The free degree of shifting, first stationary ring 54 parallel to the axially arranged alignment pin 10 of the axle sleeve 3 with the pump cover 1 by being connected (10 pair of first rotary stopper of stationary ring 54 of alignment pin), the first stationary ring sealing ring 55 support be arranged at first stationary ring 54 with Between the pump cover 1, first seal ring of moving ring 53, which is supported, is arranged at first rotating ring 52 and first spring case 51 Between;
The pump cover 1 is provided with the cavity 11 for being used for disposing impeller 6, and the axle sleeve 3 is on the outside of the end of the side of impeller 6 Face is provided with thread groove 32, to produce the conveying power towards the side of impeller 6 when the axle sleeve 3 rotates.
It should be noted that during the rotation of axle sleeve 3 mechanical sealing mechanism of axle sleeve 3 and first can will be entered by thread groove 32 Medium between fit clearance is sent out, and can effectively prevent medium in the fit clearance of the mechanical sealing mechanism of axle sleeve 3 and first Solidification, and then ensure that the first rotating ring 52 and the first seal ring of moving ring 53 can be swimmingly along the axial slips of axle sleeve 3.
In addition, as shown in figure 1, the fit clearance of impeller 6 and pump cover 1 is smaller, can prevent medium pour in axle sleeve 3 with In the fit clearance of first mechanical sealing mechanism.
Further, second mechanical sealing mechanism includes second spring box 71, the second rotating ring 72, the second ring seal The 73, second stationary ring 74, the second stationary ring sealing ring 75 are enclosed, second rotating ring 72 is arranged at the second spring box 71 and described the Between two stationary rings 74, described one end of second spring box 71 is held on the annular projection 31 that the lateral surface of axle sleeve 3 is provided with, the other end Elasticity is stretched out is held in described one end of second stationary ring 74 by the second rotating ring 72, so that second rotating ring 72 has along the axle sleeve The free degree of 3 axial displacements, second stationary ring 74 passes through parallel to the axially arranged alignment pin 10 of axle sleeve 3 and machine sealed cover 2 Connect (10 pair of second rotary stopper of stationary ring 74 of alignment pin), the second stationary ring sealing ring 75, which is supported, is arranged at second stationary ring Between 74 and the machine sealed cover 2, second seal ring of moving ring 73, which is supported, is arranged at second rotating ring 72 and described second Between spring case 71.
Further, the pump cover 1 is provided with flushing liquor import 12, and the machine sealed cover 2 exports 21 provided with flushing liquor, The flushing liquor import 12 and the flushing liquor outlet 21 with the inside UNICOM of receiving space 4, will be used for lubrication and it is cold But flushing liquor imports or exported the receiving space 4.Because medium easily solidifies, cooling and lubrication effect to mechanical seal structure It is really poor, mechanical seal structure is cooled down and lubricated using the external flushing liquor being passed through, can be with prolonged mechanical sealing structure Service life.
Further, pump shaft 8 is equipped with the axle sleeve 3, keyway and key are passed through between the pump shaft 8 and the axle sleeve 3 Rotary stopper is realized, impeller 6 is connected with the end of pump shaft 8.
Further, the pump cover 1 is provided with pump cover sealing ring 9 with docking for the machine sealed cover 2 at cooperation.
It is of the present utility model to have technical effect that relative to prior art:
The utility model axle sleeve is provided with thread groove, can will enter axle sleeve and the first mechanical sealing mechanism when axle sleeve rotates Medium between fit clearance is sent out, and can effectively prevent medium from being coagulated in the fit clearance of axle sleeve and the first mechanical sealing mechanism Gu, have the advantages that fault rate is low, long lifespan.
Finally it should be noted that:Embodiment of above is only limited to illustrate the technical solution of the utility model, rather than to it System;Although the utility model is described in detail with reference to aforementioned embodiments, one of ordinary skill in the art should Understand:It can still modify to the technical scheme described in foregoing each embodiment, or special to which part technology Levy carry out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from each reality of the utility model Apply the spirit and scope of mode technical scheme.

Claims (5)

1. a kind of mechanical sealing structure for pump for conveying easy setting medium, including pump cover, machine sealed cover and axle sleeve, the pump cover and The machine sealed cover is relative to connect settings, and axle sleeve is axle sleeve and the pump cover, described through the pump cover and machine sealed cover setting Machine sealed cover surrounds to form a receiving space, it is characterised in that also including the first mechanical sealing mechanism, in the receiving space Set close to the pump cover side, at the cooperation to seal the pump cover and the axle sleeve;
Second mechanical sealing mechanism, is set in the receiving space close to the machine sealed cover side, is sealed with sealing the machine At the cooperation of gland and the axle sleeve;
First mechanical sealing mechanism includes the first spring case, the first rotating ring, the first seal ring of moving ring, the first stationary ring, first Stationary ring sealing ring, first rotating ring is arranged between first spring case and first stationary ring, first spring case One end is held on the annular projection that axle sleeve lateral surface is provided with, and other end elasticity is stretched out is held in described first by the first rotating ring Stationary ring one end, so that first rotating ring has the free degree along the axle sleeve axial displacement, first stationary ring passes through parallel It is connected in the axially arranged alignment pin of the axle sleeve with the pump cover, the first stationary ring sealing ring, which is supported, is arranged at described first Between stationary ring and the pump cover, first seal ring of moving ring support be arranged at first rotating ring and first spring case it Between;
The pump cover is provided with the cavity for being used for disposing impeller, and end lateral surface of the axle sleeve close to impeller side is provided with spiral shell Groove, to produce the conveying power towards impeller side when the axle sleeve rotates.
2. a kind of mechanical sealing structure for pump for conveying easy setting medium according to claim 1, it is characterised in that described Second mechanical sealing mechanism includes second spring box, the second rotating ring, the second seal ring of moving ring, the second stationary ring, the sealing of the second stationary ring Circle, second rotating ring is arranged between the second spring box and second stationary ring, and described second spring box one end is supported In on the annular projection that axle sleeve lateral surface is provided with, the second rotating ring is held in second stationary ring one by other end elasticity stretching End, so that second rotating ring has the free degree along the axle sleeve axial displacement, second stationary ring passes through parallel to axle sleeve Axially arranged alignment pin is connected with machine sealed cover, the second stationary ring sealing ring support be arranged at second stationary ring with it is described Between machine sealed cover, second seal ring of moving ring, which is supported, to be arranged between second rotating ring and the second spring box.
3. a kind of mechanical sealing structure for pump for conveying easy setting medium according to claim 1, it is characterised in that described Pump cover is provided with flushing liquor import, and the machine sealed cover is exported provided with flushing liquor, the flushing liquor import and the flushing liquor Outlet with UNICOM inside the receiving space, will import or export for the flushing liquor that lubricates and cool down and described house empty Between.
4. a kind of mechanical sealing structure for pump for conveying easy setting medium according to claim 1, it is characterised in that described Pump shaft is equipped with axle sleeve, rotary stopper, impeller and pump shaft end are realized by keyway and key between the pump shaft and the axle sleeve Portion is connected.
5. a kind of mechanical sealing structure for pump for conveying easy setting medium according to claim 1, it is characterised in that described Pump cover is provided with pump cover sealing ring with docking for the machine sealed cover at cooperation.
CN201720028487.3U 2017-01-10 2017-01-10 A kind of mechanical sealing structure for pump for conveying easy setting medium Active CN206478005U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720028487.3U CN206478005U (en) 2017-01-10 2017-01-10 A kind of mechanical sealing structure for pump for conveying easy setting medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720028487.3U CN206478005U (en) 2017-01-10 2017-01-10 A kind of mechanical sealing structure for pump for conveying easy setting medium

Publications (1)

Publication Number Publication Date
CN206478005U true CN206478005U (en) 2017-09-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720028487.3U Active CN206478005U (en) 2017-01-10 2017-01-10 A kind of mechanical sealing structure for pump for conveying easy setting medium

Country Status (1)

Country Link
CN (1) CN206478005U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109139923A (en) * 2018-09-28 2019-01-04 安徽安密机械密封有限公司 A kind of split spring mechanical seal part and its preparation process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109139923A (en) * 2018-09-28 2019-01-04 安徽安密机械密封有限公司 A kind of split spring mechanical seal part and its preparation process

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