CN206145317U - Wet ball mill feeding sealing device and sealing system thereof - Google Patents

Abstract

The utility model provides a wet ball mill feeding sealing device and sealing system thereof includes in proper order in the the device axial that efflux seat, sealed pad, the efflux body and maze pressure are blue, efflux seat fixed connection is on the inlet pipe, the toroidal cavity that the efflux body is connected, is just formed between the two through connecting piece and efflux seat is the collecting chamber, sealing gasket connection is between the efflux seat and the efflux body, the maze is pressed the orchid to cup joint and is being penetrated the fluidic tip, and is being connected with at least twice axial O type sealing washer between the two. The utility model discloses the sealed scheme of taking the thick liquid part of efflux formula non -contact can play the sealed effect of better bistrique, utilizes the triple seal to guarantee wet ball mill bistrique sealing device's zero leakage effectively, and real freshly ground does not have at first inlet pipe position the leakage, and this scheme of while is transformed in former system simply, the transformation expense is lower, can satisfy healthy operation of mill's equipment and safe and civilized production requirement, easily popularizes and applies on the wet process ball mill.

Description

A kind of feeding sealing device of wet type ball mill and its sealing system

Technical field

This utility model is related to wet ball-milling machine equipment, particularly a kind of sealing device.

Background technology

In order to prevent serosity in grinding machine from spilling between feed pipe and screw-casing, wet ball mill typically takes gasket seal Sealing, as shown in Figure 1：This sealing device is connected between feed pipe 14 and screw-casing 15, shown in Figure 2, including sealing Pad 16, sealing gasket differential 18 and sealing gasket fastening bolt 17, belong to axial seal, and the principle of the sealing is by screwing hermetic pad Fastening bolt 17 promotes sealing gasket differential 18 and then gasket seal 16 is pressed on securely the sealing on screw-casing 15, after compression Pad 16 is filled in screw-casing endoporus and reaches the purpose of sealing with feed pipe space.

This sealing is mainly characterized by：Suitable static seal, is such as used for dynamic sealing, does not require nothing more than sealing circumference filling gap Uniformly（Gap uniformity i.e. between feed pipe and screw-casing endoporus）, and the screw-casing endoporus for rotating and charging pipe outer wall sealing gasket The surface smoothness of junction, deviation from circular from and concentricity accuracy class require higher, so just can guarantee that relative Preferable sealing effectiveness.And specific to on-site actual situations, analyze first from mill feeding pipe：General wet ball mill feed Pipe belongs to cast steel moulding by casting, and outer surface is not machined out process, and surface smoothness is poor, when causing wet ball mill to operate, Not only wear and tear during the sealing gasket contact rougher feed pipe of outer surface when screw-casing rotates aggravation；Simultaneously because tube wall is concavo-convex not Flat, the liquid containing stereoplasm being ceaselessly dropped in charging pipe outer wall forms " rotated flowing liquid " with the operating of screw-casing, along charging tube wall Recess " climb into " sealing gasket with charging pipe outer wall gap, the liquid containing stereoplasm for climbing into exacerbates the mill of charging pipe outer wall and sealing gasket Damage, the gap for producing of wearing and tearing causes the position serosity leakage increasing, to change and can repeat said process again after sealing gasket, and With the increasing of feed pipe wear extent, sealing gasket cannot fill up the gap of feed pipe and screw-casing, wet ball mill bistrique spillage Frequency more and more higher, not only affect enterprise security to carry out production strictly in line with rules and regulations level, more seriously from the serosity meeting of position leakage As the grease chamber of bistrique bearing shell is penetrated in the operating of grinding machine, bistrique axle journal faces with bearing shell and damages the substantial equipment risk stopped transport.

In order to eliminate wet ball mill inlet spillage failure, business equipment health and safe and civilized production level are improved, one A little enterprises are transformed mill entrance spillage position part, now with the solution of so several transformations：

Firstth, using axial packing seal mode：According to mill feeding pipe size design, manufacture filler chamber, with water pump, stir The filler chamber, filler and differential unlike Ban Qi kind equipments filler chamber is installed in the wet grinding screw-casing of rotation（Or taper sheath） On, non-water sealed ring in filler room.Bistrique seals to be compressed by differential and is filled in the filler of feed pipe and filler chamber and reaches axial direction The purpose of sealing.

Secondth, radial direction mechanical seal mode is taken：According to mill feeding pipe size, design, manufacture mechanical seal, by machine The face pressure of tool sealing dynamic and static ring setting is reaching the purpose of sealing.

3rd, drainage way is taken：Flushing water spray is installed above wet ball mill feed pipe and screw-casing junction Head, then installs get water bucket below bistrique, the serosity that wet ball mill feed mouth is leaked is poured in get water bucket, by water receiving Arrange outside drainage tube below bucket.

Due to some odjective causes, using first method can only proper extension bistrique spillage cycle, main cause is This kind of sealing device adopts similar sealing means to sealing gasket, i.e., reach by the method in extruding elimination sound work surface gap The purpose for avoiding serosity from leaking, and it is have enough lubrications that the crush seal for being used for sound work surface needs the subject matter for solving Liquid cooling fluid（Typically using clear water as metalworking coolant for filler）To take away heat and the reduction sound that friction is produced The abrasion of work surface, but due to the filler chamber and the grinding mill barrel that rotation is installed on unlike the filler chamber being applied on water pump On, it is impossible to cooling lubricated water is accessed between filler and feed pipe, so that this dry friction inevitably accelerates filler and enters The abrasion of expects pipe outer wall, the sound gathering throat for producing that weares and teares can become more overstriking by the filling of liquid containing stereoplasm in grinding mill barrel It is rough, the abrasion of work surface can be more accelerated after coefficient of friction increase；Secondly, for gyration, the concentricity of sound part is to protect Card contact site reduces one of essential condition of abrasion, and for wet ball mill, feed pipe is operated in material and constantly impacts Working environment in, its unordered vibration causes feed pipe ceaselessly to deviate spiral tube hub, between charging pipe outer wall and filler Because the eccentric abrasion for producing is also that the method cannot solve the main cause of bistrique spillage.Therefore, the method energy proper extension mill The main cause in head spillage cycle is that the method by increasing filler chamber's thickness, and then can increase the contact surface of sound work surface Product, caused by playing the sealing function of " multiple sealing gaskets ".

And second method, from the point of view of using effect, although improvement expenses is larger, but expected using effect is unable to reach, Main cause is that grinding machine stationary seat needs to be installed after the positioning of scene first, and dynamic and static ring faces parallel error is difficult control in relatively low water It is flat；Secondly because mill feeding pipe is operated in the working environment that material constantly impacts, its unordered vibration causes feed pipe not Deviate spiral tube hub with stopping, namely dynamic and static ring end face be disorderly operated in bottom subtended angle-closure-again subtended angle, be closed again ... Environment in, there is lower subtended angle and just illustrates that mechanical seal is failed in dynamic and static ring, while this unordered closure vibration can cause sound Ring is damaged；Again mechanical seal requirement axial movement value is typically required within 0.3mm, and for wet ball mill, in order to mend Repay because temperature affects to make the axial movement value that grinding mill barrel length changes and controls be far longer than 0.3mm, therefore machine is sealed Dynamic and static ring face pressure amplitude of variation is larger, dynamic and static ring continuous firing face pressure it is larger-environment without face pressure in, I.e. dynamic and static ring end face is operated in the state of pressurization abrasion-seal failure, is also just unable to reach expected sealing effectiveness；Add The mechanical seal diameter is typically greater than 400mm, causes improvement expenses higher.

The third drainage method, is practically without fundamentally solving the leakage sealed problem of bistrique feed end, and is only Serosity to leaking out carries out dredging drain, and the defect is not thoroughly effected a radical cure.

Utility model content

The purpose of this utility model is to provide a kind of feeding sealing device of wet type ball mill and its sealing system, to solve to pass System sealing device sealing effectiveness is poor, service life is short and has the technical problem of abrasion to machine.

For achieving the above object, this utility model is adopted the following technical scheme that：

A kind of feeding sealing device of wet type ball mill, includes successively jet seat, sealing gasket, jet body and labyrinth pressure on axial direction It is blue；The jet seat is fixedly connected on feed pipe；The jet body is connected and shape between the two by connector with jet seat Into toroidal cavity be collecting chamber；The sealing gasket is connected between jet seat and jet body；The labyrinth differential is socketed in be penetrated The end of fluid and be connected between the two at least twice axial direction O-ring seal.

The labyrinth differential is ring plate, and annular groove is provided with along its axial direction on its inner ring, in each annular groove Correspondence connects axial O-ring seal together, and both gaps coordinate.

The jet seat is overall machine-tooled component, including annular slab and be vertically positioned at that annular slab is outer peripheral to be arranged circumferentially Flange connector, the top of the flange connector is concordant with annular slab upper surface, bottom exceedes the lower surface of annular slab, connects convex Uniform intervals ring is provided with jet seat flange hole on edge；Jet seat inlet opening is provided with the annular slab.

The jet seat inlet opening at least two, be uniformly arranged on the upper of annular slab, the inlet opening be screwed hole and It is threadedly coupled with admitting pipe joint.

The jet body includes annular slab, is vertically positioned at the outer peripheral connection chimb being arranged circumferentially of annular slab and vertical position In the annular collar of annular slab inward flange, the connection chimb and annular collar respectively positioned at the both sides of annular slab, wherein connecting It is concordant with the lower surface of annular slab that the top of chimb exceedes the upper surface of annular slab, end, the top of annular collar and annular slab Upper surface is concordant, the lower surface that end exceedes annular slab；Uniform intervals ring is provided with jet body flange on the connection chimb Hole, the jet body flange hole and jet seat flange hole are correspondingly arranged and are connected by connector.

The flange connector is also provided with two jet seat pin holes and each two jet seat pin hole is one group of company of being oppositely arranged on The offside of flange is connect, and each jet seat pin hole position is between two jet seat flange holes；Also it is provided with the connection chimb and penetrates Fluid pin-and-hole, the jet body pin-and-hole is correspondingly arranged with jet seat pin hole, and both are connected by bearing pin.

The axial O-ring seal is tightly sleeved in the annular collar end of jet body, correspondence labyrinth differential position.

A kind of sealing system using described feeding sealing device of wet type ball mill, including screw-casing, feed pipe and company Sealing device between the two is connected on, wherein jet seat is fixedly connected on the outer wall of feed pipe；The annular neck of the jet body The end of circle is located in screw-casing endoporus and less than the inner surface of screw-casing；The labyrinth differential is located at the appearance of screw-casing Face and both by securing member connect；The annular slab of the jet seat, the flange connector of jet seat, the connection chimb of jet body, Collecting chamber is formed between the annular slab of jet body and the outer wall of feed pipe.

Radial seal pad is connected between the labyrinth differential and the outer surface of screw-casing.

Compared with prior art this utility model has the characteristics that and beneficial effect：

Jet body and jet seat are designed with wet milk slurry liquid contacts region, both coordinate, between feed pipe and screw-casing Collecting chamber and injection runner are formed, the serosity being dropped in grinding machine using the high-velocity flow of injection stream road outgoing in charging pipe outer wall Pour inside grinding machine, while the vacuum produced using high-velocity flow at injection runner, by screw-casing endoporus and the external wall of jet column In fluid suction jet area between gap, flow in grinding mill barrel together with jet.And devise in the outer face of screw-casing Labyrinth differential, radial seal pad and axial O-ring seal can be sealed to the fluid for not being completely introduced into vacuum area, San Chongmi Envelope is effectively guaranteed the zero leakage of wet ball mill bistrique sealing device, realizes bistrique feed pipe position No leakage, it is ensured that The key health steady running of wet ball mill and the safe and civilized production level of factory.

This utility model compares with existing wet ball mill bistrique Sealing Technology, has the following advantages：

1st, the characteristics of making full use of wet ball mill inside to introduce current, after the watermeter scale of bistrique water material proportioning Fluidic seal water is introduced, on the basis of former grinder system water material balance is not destroyed bistrique sealing device is designed.

2nd, non-contacting seal is carried out to bistrique serosity using the vacuum produced near injection runner high-velocity flow and current, Equipment part is without abrasion, long service life.

3rd, the characteristics of making full use of feed pipe to be vibrated by material impact, effectively eliminates between jet body and feed pipe gap The possibility of fouling and clogging, foreign matters from being blocked.

4th, the labyrinth differential of design and axial O-ring seal, ensure that be introduced in jet flow negative pressure region to greatest extent Current along jet gun outer wall leak.

To sum up, it is close that the jetting type non-contact seals scheme that this utility model is taken serum portion can play preferable bistrique Envelope effect, at the same the program transform on original system simply, improvement expenses it is relatively low, shop equipment health can be met and operated and safely Carry out production strictly in line with rules and regulations requirement, it is easy to the popularization and application on ball mill by wet process.

Description of the drawings

Below in conjunction with the accompanying drawings the utility model is described in more detail.

Fig. 1 is the structural representation of existing sealing device.

Fig. 2 is the partial enlargement structural representation in the I portions of Fig. 1.

Fig. 3 is structural representation of the present utility model.

Fig. 4 is the partial enlargement structural representation in the II portions of Fig. 3.

Fig. 5 is the structural representation of jet seat of the present utility model.

Fig. 6 is the cross-sectional view of jet seat of the present utility model.

Fig. 7 is the structural representation of jet body of the present utility model.

Fig. 8 is the cross-sectional view of jet body of the present utility model.

Fig. 9 is the structural representation of this utility model labyrinth differential.

Figure 10 is the cross-sectional view of this utility model labyrinth differential.

Figure 11 is the partial enlargement structural representation in III portions in Figure 10.

Reference：The axial O-ring seal of 1- screw-casings, 2- labyrinths differential, 3- radial seal pads, 4- first, 5- second Axial O-ring seal, 6- jet bodies, 61- jet body flange holes, 62- jet body pin-and-holes, 7- securing members, 8- jet seats, 81- are penetrated Stream seat flange hole, 82- jet seat pins hole, 83- jet seats inlet opening, 9- connectors, 10- admitting pipe joints, 11- feed pipes, 12- Collecting chamber, 13- sealing gaskets, 14- feed pipes, 15- screw-casings, 16- gasket seals, 17- sealing gasket fastening bolts, 18- sealing gaskets Differential.

Specific embodiment

Embodiment is shown in Figure 1, this wet ball mill bistrique jet flow sealing device, including jet seat 8, jet body 6, The sealing member such as labyrinth differential 2, water system and sealing ring, sealing gasket.

Shown in Figure 3, the jet seat 8 is overall machine-tooled component, the outside of feed pipe 11 is socketed in, referring to Fig. 6 Shown, the jet seat 8 includes annular slab and is vertically positioned at the outer peripheral flange connector being arranged circumferentially of annular slab, the connection The top of flange is concordant with annular slab upper surface, bottom exceedes the lower surface of annular slab, shown in Figure 5, on flange connector Even interval ring is provided with jet seat flange hole 81；Jet seat pin hole 82 is also provided with flange connector, the jet seat pin hole 82 has Two, be oppositely arranged on the offside of flange connector, and each jet seat pin hole 82 is located between two jet seat flange holes 81；Institute State and be provided with annular slab jet seat inlet opening 83, the jet seat inlet opening 83 there are two or more, is uniformly arranged on annular slab Reference circle on, the inlet opening be screwed hole, be threadedly coupled with admitting pipe joint 10, and by admitting pipe joint 10 with enter Water pipe connects.

Shown in Figure 3, the jet body 6 is overall machine-tooled component, the outside for being socketed in feed pipe 11 and and jet Seat 8 is connected by connector 9, and wherein connector 9 is flange bolt, shown in Figure 8, and the jet body 6 includes annular Plate, it is vertically positioned at the outer peripheral connection chimb being arranged circumferentially of annular slab and is vertically positioned at the annular collar of annular slab inward flange, The connection chimb and annular collar are respectively positioned at the both sides of annular slab, wherein the top of connection chimb exceedes the upper table of annular slab Face, end are concordant with the lower surface of annular slab, and the top of annular collar is concordant with the upper surface of annular slab, end exceedes annular slab Lower surface, the end of the annular collar is located in screw-casing 1 hole site and less than the inner surface of screw-casing 1, annular neck The end of circle is also socketed with labyrinth differential 2.

The labyrinth differential 2 be located at screw-casing outer surface side, both connected by securing member 7, the securing member 7 is Fastening bolt, shown in Figure 9, ring is provided with a circle through the connecting hole of securing member 7 on labyrinth differential 2, referring to Figure 10, Figure 11 It is shown, on the inner ring of the labyrinth differential 2 along its it is axially at least parallel be provided with twice annular groove, correspondence in each annular groove One axial O-ring seal of connection, it is parallel on the inner ring of labyrinth differential 2 to be connected to the first axial He of O-ring seal 4 in this example Second axial O-ring seal 5, wherein the axial O-ring seal of the first axial O-ring seal 4 and second with annular groove gap Coordinate, thus multiple tracks axial direction O-ring seal operationally form labyrinth seal, be effectively prevented fluid along the outer wall of jet body 6 with The endoporus slot leakage of screw-casing 1, while being also associated with sealing gasket 3 between labyrinth differential 2 and screw-casing, can be effectively prevented stream Body is leaked along screw-casing outer surface.

Shown in Figure 7, uniform intervals ring is provided with jet body flange hole 61, the jet body flange hole on connection chimb 61 and jet seat flange hole 81 be correspondingly arranged and connected by connector 9；Jet body pin-and-hole 62 is also provided with connection chimb, it is described Jet body pin-and-hole 62 is correspondingly arranged with jet seat pin hole 82, and both are connected by bearing pin, play a part of positioning, afterwards by company Fitting 9 is fixedly connected jet seat 8 with jet body 6.

It is shown in Figure 3, the connection chimb docking of the flange connector of the jet seat 8 and jet body 6 and connect between the two It is connected to sealing gasket 13, after the flange connector of jet seat 8 and the connection chimb docking of jet body 6, the annular slab of jet seat 8, penetrates The flange connector of stream seat 8, the connection chimb of jet body 6, formation collection between the annular slab of jet body 6 and the outer wall of feed pipe 11 Flow chamber 12, the Main Function of collecting chamber 12 is to ensure stablizing for jet body rate of discharge and pressure.

Shown in Figure 4, operation principle of the present utility model is：Fluidic seal water enters collecting chamber 12 by water inlet pipe, Fluidic seal water after the voltage stabilizing of collecting chamber 12, into the injection runner that formed of annular collar and feed pipe 11 of jet body 6, referring to The direction of arrow, sprays at the endoporus of screw-casing 1, and fluidic seal water is dropped in outside feed pipe 11 when wet ball mill is operated Liquid containing stereoplasm on wall is rinsed in grinding mill barrel；Simultaneously because the high-velocity flow in the exit of jet body 6 can be near current side Produce negative pressure, make along the inner surface k of screw-casing 1 splash down landing between the inwall c and the outer wall of jet body 6 of the endoporus of screw-casing 1 Fluid near the m of gap is inhaled in jet area, is flowed into together with jet in grinding mill barrel, is to eliminate not by negative pressure region The clean fluid of suction is leaked along the outer wall of jet body 6 with the gap m of the inwall c of screw-casing endoporus, in the outer surface of screw-casing 1 Labyrinth differential 2 is mounted with, the endoporus of the labyrinth differential 2 arranges multiple tracks annular groove is used for the axial O-ring seal of correspondence connection, by Gap is designed as in annular groove and axial O-ring seal to coordinate, therefore annular groove and tight beam are in the axle of the outer wall of jet body 6 To O-ring seal operationally, crisscross motion, formation labyrinth seal between axial O-ring seal, is effectively prevented fluid edge and penetrates The outer wall of fluid 6 is leaked with the gap m of screw-casing endoporus.

This utility model jet seat, the method for designing of jet body, comprise the following steps that：

Step one, checks the circularity of the external diameter of the horizontal component of feed pipe 11, the such as deviation from circular from of feed pipe 11 exceedes 0.1mm, need to be machined out to feed pipe horizontal component external diameter and reach the technical specification.Then according to the external diameter processing of feed pipe Make jet seat 8 and jet body 6, the several technical problems that should be noted during manufacture：

Firstth, to ensure jet seat, jet body installation strength, the thickness of annular slab is not less than 8mm.

Secondth, jet seat, jet body flange hole need to be processed with rig.

3rd, jet seat, the pin-and-hole of jet body need to be matched and scrape pin, and preferably be arranged symmetrically.

4th, the internal diameter of jet seat annular slab（Feed pipe external diameter E）By gap fit tolerance（H）Processing.

5th, the internal diameter D of jet body looping pit circle need to be more than the 0.5mm～0.8mm of feed pipe external diameter E.

6th, the external diameter C of jet body looping pit circle need to be less than the 0.8mm～1mm of screw-casing bore inner diameter c.

7th, standard pipe thread is preferably processed in the inlet opening processed on jet seat, with by silk and admitting pipe joint phase Even.For ensure inflow in afflux room it is balanced with it is stable, preferably process 2 or more inlet openings and be arranged symmetrically.Water inlet Bore dia is according to " each water inlet bore sectional area sum is more than the ring cross-section product that jet body internal diameter D and feed pipe external diameter E is constituted Difference " determine.The radial position of inlet opening, it is ensured that inlet opening sectional area can fully enter collecting chamber 12 and should reserve screw thread with The installation dimension of feed pipe.

8th, jet body length should be controlled on the basis of the thickness sum of screw-casing endoporus thickness+labyrinth differential 2, then is added The installation dimension of upper 200mm.

The method for designing of labyrinth differential 2 of the present utility model：Grinding machine screw-casing original feeding seal differential pitch-row, hole are surveyed and drawn first Footpath, the pore of labyrinth differential 2 is processed away from reference to thickness, the annular of the true labyrinth differential 2 of on-site actual situations according to the pitch-row The quantity of groove, groove width and groove depth, the thickness of labyrinth differential 2 is 20mm, has twice annular groove, each annular in the present embodiment The groove width and groove depth of groove is designed by 4mm.

The installation method of sealing device of the present utility model, comprises the following steps that：

Step one, according to screw-casing axial displacement n during mill working load operation, to jet seat 8 axially position is carried out： Description is consulted first or by screw-casing axial displacement n during measurement mill working load operation, jet seat axially position chi On the basis of the very little inner surface k by screw-casing 1, on the basis of screw-casing axial displacement n, jet body height and jet body are added , in the axial location of feed pipe, jet seat is by weldering for the thickness of gasket seal between jet seat, as jet seat inner side end Connect mode or alternate manner is fixed on the outer wall of feed pipe, during side end face and the feed pipe for control jet seat is noted during welding The error of perpendicularity of heart line is not less than 0.1mm.

Step 2, axial O-ring seal is imbedded in the annular groove of labyrinth differential 2.

Step 3, is installed the labyrinth differential for being provided with axial O-ring seal with clearance gauge or other sheet instrument order On jet body 6：Jet body neck ring external diameter C is should be less than when wherein O-ring seal is selected, it is O-shaped close to ensure the axial direction after installing The tight beam of seal energy is on the outer wall of jet body.

Step 4, installs jet body 6, will be equipped with the jet body of labyrinth differential by two straight pins with jet seat distribution It is bolted after radial positioning, to prevent the water in collecting chamber 12 from leaking from composition surface, in jet body and jet during installation Sealing gasket 13 is installed additional between seat.

Step 5, installs feed pipe 11, carries out installation centering to feed pipe, centering precision should meet jet body external diameter C with The gap m circumference errors of the inwall c of the endoporus of screw-casing 1 are less than 0.3m.

Step 6, fixed labyrinth differential 2, is pushed axially labyrinth differential 2 and radial direction O-ring seal 3 is adjacent to screw-casing End face, fastens after mounting flange bolt.

Step 7, connection sealing water lines, after bistrique water measurement table two-way water source is taken, and is connect by water inlet connection 10 Water inlet on incident flow seat, should respectively install valve additional on two-way water supply line, so far, complete the installation of sealing device, start Come into operation.

Before grinding machine puts into operation, two-way water source sealing penstock is opened；Because the sealing water source is taken at bistrique water measurement meter Afterwards, so, the water yield grinds systematic water balance on original and does not produce impact；After grinding machine is stopped transport, two road water sources sealing penstock is closed.

Claims (10)

1. a kind of feeding sealing device of wet type ball mill, it is characterised in that：Include jet seat on axial direction successively（8）, sealing gasket （13）, jet body（6）With labyrinth differential（2）；

The jet seat（8）By connector（9）With jet body（6）The toroidal cavity for connecting and being formed between the two is afflux Room（12）；

The sealing gasket（13）It is connected to jet seat（8）With jet body（6）Between；

The labyrinth differential（2）It is sleeved on jet body（6）End and be connected with least twice axially O-shaped sealing between the two Circle.

2. feeding sealing device of wet type ball mill according to claim 1, it is characterised in that：The labyrinth differential（2）For Ring plate, annular groove is provided with its inner ring along its axial direction, correspondence connection axially O-shaped sealing together in each annular groove Circle, and both gaps cooperations.

3. feeding sealing device of wet type ball mill according to claim 1, it is characterised in that：The jet seat（8）For whole Body machine-tooled component, including annular slab and the outer peripheral flange connector being arranged circumferentially of annular slab is vertically positioned at, the connection is convex The top of edge is concordant with annular slab upper surface, bottom exceed annular slab lower surface, uniform intervals ring is provided with flange connector Jet seat flange hole（81）；Jet seat inlet opening is provided with the annular slab（83）.

4. feeding sealing device of wet type ball mill according to claim 3, it is characterised in that：The jet seat inlet opening （83）At least two, be uniformly arranged on annular slab, the inlet opening is screwed hole and and admitting pipe joint（10）Screw thread connects Connect.

5. the feeding sealing device of wet type ball mill according to claim 3 or 4, it is characterised in that：The jet body（6）Bag Include annular slab, be vertically positioned at the outer peripheral connection chimb being arranged circumferentially of annular slab and the annular for being vertically positioned at annular slab inward flange Neck ring, the connection chimb and annular collar are respectively positioned at the both sides of annular slab, wherein the top of connection chimb exceedes annular slab Upper surface, end it is concordant with the lower surface of annular slab, the top of annular collar is concordant with the upper surface of annular slab, end exceedes The lower surface of annular slab；Uniform intervals ring is provided with jet body flange hole on the connection chimb（61）, the jet body flange Hole（61）With jet seat flange hole（81）It is correspondingly arranged and by connector（9）Connection.

6. feeding sealing device of wet type ball mill according to claim 5, it is characterised in that：The flange connector is also provided with At least two jet seat pin holes（82）And each two jet seat pin hole（82）For one group of offside for being oppositely arranged on flange connector, And each jet seat pin hole（82）Positioned at two jet seat flange holes（81）Between.

7. feeding sealing device of wet type ball mill according to claim 6, it is characterised in that：Also open on the connection chimb There is jet body pin-and-hole（62）, the jet body pin-and-hole（62）With jet seat pin hole（82）It is correspondingly arranged, both are connected by bearing pin.

8. feeding sealing device of wet type ball mill according to claim 7, it is characterised in that：The axial O-ring seal It is tightly sleeved in jet body（6）Annular collar terminal part.

9. a kind of sealing system of the feeding sealing device of wet type ball mill described in application claim 8, including screw-casing（1）、 Feed pipe（11）With connection sealing device therebetween, it is characterised in that：Wherein jet seat（8）It is fixedly connected on feed pipe （11）Outer wall on；

The jet body（6）Annular collar end be located at screw-casing（1）In endoporus and less than screw-casing（1）Interior table Face；

The labyrinth differential（2）Positioned at screw-casing outer surface and both pass through securing member（7）Connection；

The jet seat（8）Annular slab, jet seat（8）Flange connector, jet body（6）Connection chimb, jet body（6）'s Annular slab and feed pipe（11）Outer wall between form collecting chamber（12）.

10. sealing system according to claim 9, it is characterised in that：The labyrinth differential（2）With the outer surface of screw-casing Between be connected with radial seal pad（3）.