CN206092974U - Seal structure of water pump - Google Patents

Abstract

The utility model discloses a seal structure of water pump, the pump cover in the pivot outside is located including pivot and cover, be equipped with the packing cavity between pivot and the pump cover, the both ends of packing cavity are equipped with first solid packing and second solid packing, be equipped with the liquid packing between first solid packing and the second solid packing, the cooperation is sealed with pivot and pump cover respectively in the inside and outside both sides of first solid packing and second solid packing, be equipped with the feed liquor hole with the packing cavity intercommunication on the pump cover, feed liquor hole department is equipped with control flap. The utility model discloses its sealed more reliable that can realize letting between pivot and the pump cover also makes seal structure's the life longer and maintain convenience more in addition.

Description

A kind of seal structure of water pump

Technical field

The present invention relates to a kind of water pump structure, more particularly to a kind of seal structure of water pump.

Background technology

Water pump is the machinery for conveying liquid or making liquid supercharging.It transmits the mechanical energy of prime mover or other external energies Liquid, increases liquid energy, is mainly used to convey liquid including water, oil, acid ＆ alkali liquid, emulsion, suspended emulsion and liquid gold Category etc., can also convey liquid, admixture of gas and the liquid containing suspended solids, and it widely applies to Chemical Manufacture, combustion In the fields such as gas generating, bio-pharmaceuticals.

In prior art, sealing structure is generally provided with water pump, as shown in figure 1, it includes rotating shaft 10 and be sheathed on to turn The pump cover 20 in the outside of axle 10, is provided with solid packing 30 between rotating shaft 10 and pump cover 20, and by packing gland 50 solid disk is compressed Root causes solid packing 30 to deform to hold cooperation tightly with rotating shaft, meanwhile, in order to cool down packing and prevent air from leaking in pump, typically Water seal cup is housed between packing, a small amount of water under high pressure is flowed between packing, with reality by the tank groove on pump cover during pump working Now cooling and effectively sealing, but this sealing structure is due to the abrasion of packing and aging, and leakage occurs after time length Situation.Meanwhile, the tank of water pump cannot be realized and isolation of system during pump working, that is, cause in pump working process In the sealing structure cannot be safeguarded so that safeguarding very inconvenient.

Utility model content

In order to solve at least one of above-mentioned technical problem, this application provides a kind of seal structure of water pump, it can be real The sealing now allowed between rotating shaft and pump cover is more reliable, also causes the service life of sealing structure longer in addition and safeguards more Convenience.

In order to reach the application purpose, this application provides a kind of seal structure of water pump, including rotating shaft and rotating shaft is sheathed on The pump cover in outside, is provided with packing cavity between the rotating shaft and pump cover, the two ends in described filler chamber are provided with the first solid packing and the Two solid packings, are provided with liquid packing between the first solid packing and the second solid packing, the first solid packing and Coordinate with rotating shaft and pump cover sealing respectively inside and outside second solid packing, the pump cover is provided with entering of connecting with packing cavity Fluid apertures, at the inlet opening control valve is provided with.

Alternatively, the liquid packing is CMS2000 fillers.

Alternatively, the first solid packing and the second solid packing are high water base packing or macromolecular material packing.

Alternatively, the spacing preiection for propping up the first solid packing is convexly equipped with the pump cover, the second solid packing Outside is provided with packing gland, and the packing gland is connected with pump cover.

Alternatively, the packing gland includes the pressure section offseted with the second solid packing and is connected with pump cover Connecting portion, the connecting portion is connected with pump cover by locking member.

Alternatively, the rotating shaft includes axis body and axle sleeve, and the axle sleeve fixed cover is located at the outside of axis body, the axle sleeve Outside coordinates with the inner seal of the first solid packing and the second solid packing.

Compared with prior art, the seal structure of water pump that this utility model is provided, by using liquid packing, may be implemented in During pump working, friction area is just formed between liquid packing, rather than between liquid packing and rotating shaft, i.e., will not Countershaft causes abrasion, while the coefficient of friction between liquid packing is low, the captivation between molecule is less, and rotating shaft is in motion Larger sealing force need not be overcome, extra power consumption can be reduced, while frictional heat is also less, it may not be necessary to using cold But water system, you can avoid the leakage of cooling water.In addition, when injection or liquid make-up packing is needed, control valve can be opened, By High Pressure Gun injection or liquid make-up packing, after the completion of turn off control valve, to avoid liquid packing from letting out by inlet opening Dew, in this utility model, can carry out the supplement of liquid packing during pump working, it is to avoid termination of pumping maintenance, therefore in fact Also greatly improved with property.

Other features and advantage will be illustrated in the following description, also, the partly change from description Obtain it is clear that or being understood by implementing the application.The purpose of the application and other advantages can be by description, rights Specifically noted structure is realizing and obtain in claim and accompanying drawing.

Description of the drawings

Accompanying drawing is used for providing further understanding technical scheme, and constitutes a part for description, with this The embodiment of application is used to explain the technical scheme of the application together, does not constitute the restriction to technical scheme.

Fig. 1 is the structural representation of seal structure of water pump in prior art；

Fig. 2 is the structural representation of seal structure of water pump in the embodiment of this utility model one.

Wherein, the corresponding relation in Fig. 1 to Fig. 2 between reference and component names is：

10- rotating shafts；11- axis bodies；12- axle sleeves；20- pump covers；21- inlet openings；22- spacing preiections；30- solid packings；31- First solid packing；32 second solid packings；33- liquid packings；40- control valves；50- packing glands；51- pressure sections；52- Connecting portion.

Specific embodiment

Purpose, technical scheme and advantage to make the application becomes more apparent, below in conjunction with accompanying drawing to the application Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application Feature can mutual combination in any.

Many details are elaborated in the following description in order to fully understand the application, but, the application may be used also Implemented with being different from mode described here using other, therefore, the protection domain of the application does not receive following public tool The restriction of body embodiment.

The seal structure of water pump of some embodiments of the application is described below in conjunction with the accompanying drawings.

The seal structure of water pump that the application is provided, as shown in Fig. 2 including rotating shaft 10 and the pump cover being sheathed on the outside of rotating shaft 10 20, packing cavity is provided between the rotating shaft 10 and pump cover 20, the two ends in described filler chamber are provided with the first solid packing 31 and second Solid packing 32, is provided with liquid packing 33, first solid between the first solid packing 31 and the second solid packing 32 Seal with rotating shaft 10 and pump cover 20 respectively inside and outside the solid packing 32 of packing 31 and second and coordinate, the pump cover 20 is provided with The inlet opening 21 connected with packing cavity, is provided with control valve 40 at the inlet opening 21.In the present embodiment, by using liquid disk Root 33, during may be implemented in pump working, friction area is just formed between liquid packing 33, rather than in liquid packing 33 Between rotating shaft 10, i.e., will not countershaft 10 cause abrasion, while the coefficient of friction between liquid packing 33 is low, between molecule Captivation is less, and rotating shaft 10 need not overcome larger sealing force in motion, can reduce extra power consumption, while friction Heat is also less, it may not be necessary to adopt cooling water system, you can avoid the leakage of cooling water.In addition, when needs injection or supplementing During liquid packing 33, control valve 40 (control valve 40 preferably adopts ball valve) can be opened, by High Pressure Gun injection or replenisher Body disc root 40, after the completion of turn off control valve 40, to avoid liquid packing 33 from revealing by inlet opening 21, this utility model In, the supplement of liquid packing 33 can be carried out during pump working, it is to avoid termination of pumping maintenance, therefore its practicality is also carried significantly It is high.

Meanwhile, in the present embodiment, the rotating shaft 10 includes axis body 11 and axle sleeve 12, and the fixed cover of the axle sleeve 12 is located at axle Match somebody with somebody with the inner seal of the first solid packing 31 and the second solid packing 32 in the outside of body 11, the outside of the axle sleeve 12 Close.By being arranged axle sleeve 12 in the outside of axis body 11, it is capable of achieving to protect axis body 11, it is to avoid the first solid packing 31 and the Two solid packings 32 wear and tear axis body 11, so as to ensure that water pump has longer service life.

Meanwhile, in the present embodiment, the liquid packing is preferably CMS2000 fillers, CSM2000 fillers by homozygosis into The material mixing such as KEVLAR fibers, high-purity graphite, PTFE (politef), organic encapsulant are constituted, and form a kind of random The dark gum that lattice are limited, its intermolecular captivation very little, coefficient of friction very little, rotating shaft 10 need not overcome in motion Larger sealing force, can reduce extra power consumption, while frictional heat is also less, it may not be necessary to adopt cooling water system, The leakage of cooling water can be avoided.Meanwhile, the first solid packing 31 and the second solid packing 32 are high water base packing or height Molecular material packing, its sealing between on the one hand can realizing and rotating shaft 10 and pump cover 20 between coordinates, and on the other hand also makes Obtain frictional resistance also relatively small.

Meanwhile, in the present embodiment, the spacing preiection 22 for propping up the first solid packing 31 is convexly equipped with the pump cover 20, it is described The outside of the second solid packing 32 is provided with packing gland 50, and the packing gland 50 is connected with pump cover 20.Pump cover 20, rotating shaft 10, Described filler chamber, the first solid packing 31, the second solid packing 32 and liquid are defined between spacing preiection 22 and packing gland 50 In the packing cavity, in assembling process, be initially charged with the first solid packing 31 makes it offset with spacing preiection 22 to body disc root 33, The second solid packing 32 and packing gland 50 are sequentially loaded into again, and now pump cover 20, rotating shaft 10, the first solid packing 31 and second are solid Body disc root 32 defines the containing cavity of liquid packing 33, liquid packing 33 can be injected in the containing cavity by inlet opening 21, i.e., It is capable of achieving the assembling of whole seal structure of water pump.Meanwhile, the packing gland 50 includes being offseted with the second solid packing 32 Pressure section 51 and the connecting portion 52 that is connected with pump cover 20, the connecting portion 52 is connected by locking member with pump cover 20, locked Part is preferably screw.

In assembling process, first dress watch packing cavity is smooth for this utility model, cleans or change axle sleeve, cutting two The first solid packing and the second solid packing that individual high water base packing or macromolecular material do, installed in the two ends of packing cavity；Separately Outward, brill-diameter is about the aperture of 15mm in the middle of pump cover before constructing, and the control valve (ball valve) installed in aperture, As the special purpose interface of liquid packing；Liquid packing handss are packed into into packing cavity, per layer should equably use tools for loading plate pressure Tightly, pump case outer end is filled to always；Packing gland on the outside of installation as packing gland using high water base packing (if note connecing Upward, installation must be smooth for mouth, allows the pressure section of packing gland to enter filler intracavity 3mm)；By the locking member on packing gland Loosen (such as enclose locking member loosened screw three), now packing gland loosens, and high pressure injection gun is connected into the interface of control valve, Open control valve high pressure injection gun liquid packing (CMS2000 fillers) is pressed in stuffing box, until packing gland stress Till cannot moving；Ball valve is closed again, and high pressure injection gun is removed；The intake gate of water pump is opened, is starting the same of water pump When the water valve that goes out of water pump is opened, and observe the leakage situation of encapsulant, start to observe that gland has sometimes minimum Heat aggregation, but should not adjust packing gland or injection liquid packing, maintain this state 15-20 minute, the such as leakage of water pump Amount is excessive, allows water pump to continue to remain on and again with high pressure injection gun by control valve interface press-in liquid packing two to three It is secondary, there can be the gap of 5 minutes in injection every time, until leakage rate is reduced or is disappeared.

In the description of the present application, term " installation ", " connected ", " connection ", " fixation " etc. all should be interpreted broadly, example Such as, " connection " can be fixedly connected, or be detachably connected, or be integrally connected；Can be joined directly together, it is also possible to It is indirectly connected to by intermediary.For the ordinary skill in the art, above-mentioned art can as the case may be understood Language concrete meaning in this application.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that the specific features, structure, material or the feature that describe with reference to the embodiment or example are contained at least one reality of the application In applying example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term Example.And, the specific features of description, structure, material or feature can in any one or more embodiments or example with Suitable mode is combined.

Although the embodiment disclosed by the application is as above, described content is only to readily appreciate the application and adopt Embodiment, is not limited to the application.Technical staff in any the application art, is being taken off without departing from the application On the premise of the spirit and scope of dew, any modification and change, but the application can be carried out in the form and details implemented Scope of patent protection, still must be defined by the scope of which is defined in the appended claims.

Claims (6)

1. a kind of seal structure of water pump, including rotating shaft and the pump cover being sheathed on the outside of rotating shaft, are provided between the rotating shaft and pump cover Packing cavity, it is characterised in that the two ends in described filler chamber are provided with the first solid packing and the second solid packing, first solid Liquid packing is provided between packing and the second solid packing, is divided inside and outside the first solid packing and the second solid packing Do not coordinate with rotating shaft and pump cover sealing, the pump cover is provided with the inlet opening connected with packing cavity, control is provided with the inlet opening Valve processed.

2. seal structure of water pump according to claim 1, it is characterised in that the liquid packing is CMS2000 fillers.

3. seal structure of water pump according to claim 1, it is characterised in that the first solid packing and the second solid disk Root is high water base packing or macromolecular material packing.

4. seal structure of water pump according to any one of claim 1 to 3, it is characterised in that be convexly equipped with the pump cover Prop up the spacing preiection of the first solid packing, be provided with packing gland on the outside of the second solid packing, the packing gland with Pump cover is connected.

5. seal structure of water pump according to claim 4, it is characterised in that the packing gland includes solid with described second Pressure section that body disc root offsets and the connecting portion being connected with pump cover, the connecting portion is connected with pump cover by locking member.

6. seal structure of water pump according to any one of claim 1 to 3, it is characterised in that the rotating shaft includes axis body And axle sleeve, the axle sleeve fixed cover is located at the outside of axis body, and the outside of the axle sleeve is solid with the first solid packing and second The inner seal of body disc root coordinates.