CN206738571U - Roller picker floating shaft end sealing device - Google Patents

Abstract

The utility model category roller picker shaft end seal technical field, more particularly to a kind of roller picker floating shaft end sealing device, including box plate（2）, screen axis backplate（3）, sealed chassis（4）, sealing clamp（6）, rocker piece（9）, contraction spring（8）, sealing felt collar（10）And screen axis axle sleeve（12）；The box plate（2）, screen axis backplate（3）, sealed chassis（4）And sealing clamp（6）It is parallel respectively successively to be fixedly connected；In the sealed chassis（4）With sealing clamp（6）Between be provided with annular seal groove（11）；The sealing felt collar（10）, rocker piece（9）And contraction spring（8）Annular seal groove is inserted successively（11）It is interior；The sealing felt collar（10）With screen axis axle sleeve（12）Socket.The utility model good sealing effect, service life length is applied widely, and screen axis shaft end can be avoided gap occur, and sealing felt collar both effectively can prevent powder from leaking shaft sleeve lubricating again.

Description

Roller picker floating shaft end sealing device

Technical field

The utility model category roller picker shaft end seal technical field, more particularly to a kind of floating type shaft end seal dress of roller picker Put.

Background technology

Roller picker is the screening plant generally used in thermal power plant coal handling system, and it is mainly by casing, sieve, sieve Axle, bearing block and power part grade composition.Screen axis both ends are outside casing, by the bearing seat supports of both sides.Casing at shaft Plate, sealing device are upper and lower split dock structure.During work, fire coal is entered in roller picker casing by coal spout, respectively Screen axis and sieve rotate in same direction carry out screening operation.Because defeated coal flow is big, drop is high, the rolling of the impact air-flow and fire coal of whereabouts It is dynamic, produced in casing and assemble a large amount of dust, and be in barotropic state.Roller picker screen axis quantity is more, stream time length, It is the major source of dust pollution to leak coal caused by casing shaft end seal is not tight, dust.Not only destroy surrounding environment, exposed coal Powder is also easy to enter adjacent bearing block, bearing premature abrasion is failed, and has a strong impact on that equipment is run.Roller picker shaft end seal one It is directly one of difficult point of coal handling system treating flour dust.

At present, roller picker shaft end seal is most is fixedly welded on box plate using sealed chassis, and sealing felt collar is by sealing Gland, which is bolted, to be clamped in groove.Outside roller picker screen axis bearing block installation casing, box plate, shaft end seal Device is upper and lower split docking structure again, along with status of equipment and the factors such as installation accuracy is poor so that axle sleeve and seal felt Gap between circle unavoidably be present；In addition, in the course of the work, mutually rubbed between the axle sleeve of rotation and the sealing felt collar being fixedly clamped Wipe, along with the entrance of coal dust, exacerbate both abrasions, quickly form increasing gap, cause to leak coal, dust.Rolling The a large amount of dust of axle sieve surrounding space is essentially from the shaft end of its both sides.

Utility model content

The utility model is intended to provide a kind of good sealing effect in place of overcome the deficiencies in the prior art, service life length, Roller picker floating shaft end sealing device applied widely.

In order to solve the above technical problems, what the utility model was realized in.

Roller picker floating shaft end sealing device, including box plate, screen axis backplate, sealed chassis, sealing clamp, floating Block, contraction spring, sealing felt collar and screen axis axle sleeve；The box plate, screen axis backplate, sealed chassis and sealing clamp are distinguished successively It is parallel to be fixedly connected；Annular seal groove is provided between the sealed chassis and sealing clamp；It is described sealing felt collar, rocker piece and Contraction spring is inserted in annular seal groove successively；The sealing felt collar is socketed with screen axis axle sleeve.

As a kind of preferred scheme, rocker piece described in the utility model uses the circular disk knot that six decile arc plates are formed Structure；The rocker piece can slide up and down along annular seal groove longitudinal wall；The internal diameter of the rocker piece is outer slightly larger than screen axis axle sleeve Footpath.

Further, the utility model is provided with arc groove in the outer surface of the rocker piece；The contraction spring is placed in In arc groove.

Further, the cross section of annular seal groove described in the utility model is divided into inside and outside two parts, and inside is trapezoidal sections, Outside is rectangular section；The sealing felt collar is placed in trapezoidal sections；The rocker piece and contraction spring are placed in rectangular section.

Further, contraction spring described in the utility model uses exoskeletal rubber oil sea spring.

Further, screen axis backplate, sealed chassis and sealing clamp described in the utility model use two-piece unit to binding Structure.

The utility model good sealing effect, service life length are applied widely.The utility model roller picker floating sealing Device by using screen axis backplate, sealed chassis, contraction spring, rocker piece, sealing the combining structure such as felt collar and sealing gland, In groove between sealed chassis and sealing gland, adjustable spring compresses rocker piece, and sealing felt collar is cylindrical by six sections of rocker pieces Radial compression, its radial load can make sealing felt collar to axle sleeve shrink, remain it and be bonded with screen axis sleeve outer circle, and with Its radial floating.If screen axis axle sleeve deforms or circular runout, sealing felt collar, rocker piece can also float therewith, and contraction spring is therewith Deformation, be not in gap between axle sleeve and sealing felt collar endoporus, ensure sealing effectiveness.Worn when between the two, can be real Existing random back-off, avoids screen axis shaft end and gap occurs.Sealing felt collar contains lubricating oil, and both shaft sleeve lubricating can effectively can be hindered again Only powder leaks.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and detailed description.Protection model of the present utility model Enclose the statement for being not only limited to following content.

Fig. 1 is sectional view of the present utility model.

Fig. 2 is the utility model Figure 1A-A to sectional view.

Fig. 3 is the utility model floating block structure schematic diagram.

Fig. 4 is the utility model rocker piece B-B direction sectional view.

In figure：1st, sieve；2nd, box plate；201st, upper box plate；202nd, lower box plate；3rd, screen axis backplate；301st, upper screen axis Backplate；302nd, lower screen axis backplate；4th, sealed chassis；5th, connecting bolt；6th, sealing clamp；7th, screen axis；8th, contraction spring；9th, float Block；10th, felt collar is sealed；11st, annular seal groove；12nd, screen axis axle sleeve；13rd, arc groove；14th, follower bolt.

Embodiment

As illustrated, roller picker floating shaft end sealing device, including it is box plate 2, screen axis backplate 3, sealed chassis 4, close Seal pressing plate 6, rocker piece 9, contraction spring 8, sealing felt collar 10 and screen axis axle sleeve 12；The box plate 2, screen axis backplate 3, sealing bottom Disk 4 and sealing clamp 6 is parallel respectively successively is fixedly connected；Ring packing is provided between the sealed chassis 4 and sealing clamp 6 Groove 11；Sealing felt collar 10, rocker piece 9 and the contraction spring 8 are inserted in annular seal groove 11 successively；It is described sealing felt collar 10 with Screen axis axle sleeve 12 is socketed.

The circular disk structure that rocker piece 9 described in the utility model is formed using six decile arc plates；The rocker piece 9 can Slided up and down along the longitudinal wall of annular seal groove 11；The internal diameter of the rocker piece 9 is slightly larger than the external diameter of screen axis axle sleeve 12.

The utility model is provided with arc groove 13 in the outer surface of the rocker piece 9；The contraction spring 8 is placed in circular arc ditch In groove 13.

The cross section of annular seal groove 11 described in the utility model is divided into inside and outside two parts, and inside is trapezoidal sections, and outside is Rectangular section；The sealing felt collar 10 is placed in trapezoidal sections；The rocker piece 9 and contraction spring 8 are placed in rectangular section.

Contraction spring 8 described in the utility model uses exoskeletal rubber oil sea spring.Screen axis shield described in the utility model Plate 3, sealed chassis 4 and sealing clamp 6 use two-piece unit docking structure.

Referring to shown in Fig. 1 and Fig. 2, the utility model is mainly by screen axis backplate 3, sealed chassis 4, sealing clamp 6, rocker piece 9th, contraction spring 8 and sealing felt collar 10 form, and wherein screen axis backplate 3, sealed chassis 4 and sealing clamp 6 are with box plate 2 Upper and lower split docking structure.Screen axis backplate 3 is corresponding to be welded on upper box plate 201 and lower box plate 202.The company of sealed chassis 4 Connecting bolt 5 is separately fixed on screen axis backplate 3；Sealing clamp 6 is positioned by seam, is fixed on sealing bottom with follower bolt 14 respectively On disk 4.After fixation, annular seal groove 11 is formed between the two；The annular circle that the rocker piece 9 is formed using six decile arc plates Dish structure, see Fig. 3 and Fig. 4, its thickness is slightly less than the width of annular seal groove rectangular section, and internal diameter is outer slightly larger than screen axis axle sleeve 12 Footpath, its outer surface are machined with arc groove 13, are easy to contraction spring 8 to position；Contraction spring 8 uses exoskeletal rubber oil sea bullet Spring；Sealing felt collar 10 is quality wool felt rug, and thickness is the trapezoidal sections mean breadth of annular seal groove 11, highly slightly larger than trapezoidal sections Highly, length is sleeve outer circle girth, immersion oil.During installation, first sealed chassis 4 is fixed, is put into sealing felt rug 10（Around screen axis Axle sleeve 12 cylindrical one weeks）, refill rocker piece 9 and then put contraction spring circle 8, finally cover sealing clamp 6, use follower bolt 14 are fixed and clamped（As shown in Figure 2）.

The utility model in the annular seal groove rectangular section of the device, contraction spring 8 by rocker piece 9 arc groove 13 Positioning, it, which shrinks, produces radial load, rocker piece 9 is compressed to axle center.

Six sections of arc plates of the utility model rocker piece 9, thickness are slightly less than the rectangular section width of annular seal groove 11, can be in groove Inside move radially.Under the effect of contraction spring 8, sealing felt collar 10 is compressed to axle center.When the 12 cylindrical deformation of screen axis axle sleeve or appearance During circular runout, six sections of rocker pieces 9 can distinguish radial floating therewith.

The utility model seals felt collar 10 in the trapezoidal sections of annular seal groove 11, and its thickness is dovetail groove mean breadth, Containing lubricating oil, there can be a certain amount of radial expansion in groove.

The utility model seals the cylindrical radial compression by six sections of rocker pieces of felt collar 10, and there is dovetail groove side both sides again Radial component, its inner circle is set to be bonded all the time with the cylindrical of screen axis axle sleeve 12.It is close with both abrasions in running Seal felt collar 10 can radial contraction, complete compensation；If screen axis axle sleeve 12 deforms or circular runout, it also can therewith float, be not in Gap, ensure sealing effectiveness.

In description of the present utility model, it is to be understood that the orientation or position relationship indicated in term is based on attached Orientation or position relationship shown in figure, it is for only for ease of and describes the utility model and simplify to describe, rather than instruction or hint Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The limitation of utility model.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (6)

1. roller picker floating shaft end sealing device, it is characterised in that including box plate（2）, screen axis backplate（3）, sealed chassis （4）, sealing clamp（6）, rocker piece（9）, contraction spring（8）, sealing felt collar（10）And screen axis axle sleeve（12）；The box plate （2）, screen axis backplate（3）, sealed chassis（4）And sealing clamp（6）It is parallel respectively successively to be fixedly connected；In the sealed chassis （4）With sealing clamp（6）Between be provided with annular seal groove（11）；The sealing felt collar（10）, rocker piece（9）And contraction spring （8）Annular seal groove is inserted successively（11）It is interior；The sealing felt collar（10）With screen axis axle sleeve（12）Socket.

2. roller picker floating shaft end sealing device according to claim 1, it is characterised in that：The rocker piece（9）Adopt The circular disk structure formed with six decile arc plates；The rocker piece（9）Can be along annular seal groove（11）Glided in longitudinal wall It is dynamic；The rocker piece（9）Internal diameter be slightly larger than screen axis axle sleeve（12）External diameter.

3. roller picker floating shaft end sealing device according to claim 2, it is characterised in that：In the rocker piece（9） Outer surface be provided with arc groove（13）；The contraction spring（8）It is placed in arc groove（13）It is interior.

4. roller picker floating shaft end sealing device according to claim 3, it is characterised in that：The annular seal groove （11）Cross section be divided into inside and outside two parts, inside is trapezoidal sections, and outside is rectangular section；The sealing felt collar（10）It is placed in trapezoidal In section；The rocker piece（9）And contraction spring（8）It is placed in rectangular section.

5. roller picker floating shaft end sealing device according to claim 4, it is characterised in that：The contraction spring（8） Using exoskeletal rubber oil sea spring.

6. roller picker floating shaft end sealing device according to claim 5, it is characterised in that：The screen axis backplate（3）、 Sealed chassis（4）And sealing clamp（6）Using two-piece unit docking structure.