CN203404121U - Slurry pump provided with sealing assembly - Google Patents
Slurry pump provided with sealing assembly Download PDFInfo
- Publication number
- CN203404121U CN203404121U CN201320482733.4U CN201320482733U CN203404121U CN 203404121 U CN203404121 U CN 203404121U CN 201320482733 U CN201320482733 U CN 201320482733U CN 203404121 U CN203404121 U CN 203404121U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- outer cover
- live axle
- slag stock
- felt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a slurry pump provided with a sealing assembly. The sealing assembly is installed at the position in contact with a pump body of a drive shaft in the slurry pump and comprises an outer cover provided with a radial screw hole, a stuffing box installed in the outer cover and an adjusting bolt installed in the radial screw hole of the outer cover and used for adjusting a distance between the stuffing box and the drive shaft, wherein a gland is installed on the outer surface of the outer cover. The distance between the stuffing box and the drive shaft can be adjusted through the adjusting bolt in the sealing assembly, the sealing problem can be solved under the condition that the density of the stuffing box is not changed, accordingly the edge abrasion of the stuffing box can be prevented, and the service life of the slurry pump can be prolonged.
Description
Technical field
the utility model relates to a kind of slag stock pump that black box is installed.
Background technique
slag stock pump of the prior art is by the pump housing with by the bearing housing of bracket support, and by driven by motor through bearing housing and extend to live axle in the pump housing and be arranged on that the impeller of pump housing inner end forms, on the pump housing wherein, be provided with suction port and delivery outlet.Single-stage or Multi-stage slag-slurry pump are mainly used for carrying abrasion or corrosivity slag slurry, are widely used in the numerous areas such as electric power, metallurgy, mine, coal, building materials, chemical industry.Because slag stock pump is in the process of conveying slag slurry, its liquid of carrying high concentration medium or solid particle mixture or containing the particle that is corrosive very easily penetrates on live axle, so that live axle is worn and damaged, thereby can reduce the working life of slag stock pump.
in the prior art, the black box of slag stock pump live axle generally includes an outer cover and is arranged on the stuffing box consisting of felt or similar articles in this outer cover, and for stuffing box compacting being made itself and live axle energy close contact to realize the axial gland of sealing.Due to the black box of this kind of structure be utilize axial gland along the mode of axially stuffing box being exerted pressure of live axle force stuffing box can with live axle close contact, in case grouting liquid enters in live axle.Yet, because stuffing box is to cause its density to increase to also pushing stuffing box in external diameter expansion being subject to radially larger pressure, its density increases can hinder drive shaft turns, and when extruding stuffing box, only can be from experience or feel to determine the degree of close contact between stuffing box and live axle, under normal conditions, generally believe the more closely better of both combinations, and both are closely in conjunction with causing the density of stuffing box further to increase, and also accelerate its wearing and tearing, so the mode of this kind of adjustment stuffing box also can directly affect its working life; In addition, because of stuffing box be squeezed after expansion scope be just confined in the elastic limit of himself, so, after wearing and tearing after stuffing box uses for the first time, rethink by axial gland adjustment stuffing box and have larger difficulty, this point is also to cause sealing assembly short main cause in working life." Wear-resisting shaft packing ring " of No. 2122978 bulletins of Chinese patent is exactly the structure that adopts an opening rubber ring and be contained in the wear-resisting ring set in this rubber ring, its meaning is to want to adjust shrinkage amplitude radially by the opening on insertion ring, and then improves its sealing effect and solve short problem of life-span.But, because this kind of insertion ring can only be its radial contraction amplitude of disposable adjustment, and need to be by means of adjusting as the parts of outer cover or special use, so this kind of insertion ring can not fundamentally solve existing problem in prior art.And " a kind of seal arrangement " of No. 2654953, Chinese patent bulletin adopt, be double sealing structure, comprise the end plate, Sealing, gland and the bearing support that are arranged on successively on running shaft.Its meaning is to want that the existing first layer of a cause for gossip that utilizes Sealing to compress into end plate seals, and realizes second layer sealing by the mode of gland compression filler.Although adopt the structure of two-layer sealing to there is sealing effect relatively preferably,, because felt still adopts stationary structure, can not arbitrarily adjust, so this patented technology can not fundamentally solve problems of the prior art.
Summary of the invention
task of the present utility model is to propose a kind of slag stock pump that black box is installed that utilizes the mode of adjusting distance between stuffing box and live axle to solve live axle problem easy to wear.
the slag stock pump that black box is installed that the utility model proposes, this slag stock pump comprises and is provided with the pump housing of suction port and delivery outlet and by the bearing housing of bracket support, and passing bearing housing and extending to the live axle in the pump housing by driven by motor, the end of this live axle in the pump housing is provided with the assembly of impeller, the position that described live axle contacts with the pump housing is provided with black box, sealing assembly comprises and is provided with the outer cover of screw radially and is arranged on the stuffing box in outer cover, and be arranged on outer cover radially in screw for adjusting the adjustment bolt of distance between stuffing box and live axle, on the outer surface of outer cover, gland is installed.
the semicircle rigid disk that is separated with certain distance between two is installed between the internal surface of described outer cover and stuffing box outer surface, on semicircle rigid disk, is provided with the radial projection that at least one prevents that stuffing box from rotating.
described stuffing box comprises two the first ring felts that are axially affixed and the second ring felt, and on gland, is provided with the convex for preventing that felt from rotating that can insert in felt.
the opening part of described the first ring felt along being radially provided with spigot and socket type step, and the opening part of the second ring felt along being axially provided with spigot and socket type step.
adjustment bolt in the slag stock pump that black box is installed that the utility model proposes can be adjusted distance between stuffing box and live axle, in the situation that not changing stuffing box density, can solve sealing problem, thereby can prevent the wearing and tearing of stuffing box limit portion, can extend the working life of slag stock pump.
Accompanying drawing explanation
accompanying drawing 1 is the embodiment's of slag stock pump that black box is installed that proposes of the utility model outward appearance cross-sectional view;
accompanying drawing 2 is surface structure decomposing schematic representations of black box in Fig. 1.
embodiment:
referring to Fig. 1, this figure provides the surface structure that the utility model proposes to be provided with an embodiment of slag stock pump of black box.This slag stock pump comprises the pump housing 1, bearing housing 2, live axle 3, impeller 4, bracket 5 and black box.The pump housing 1 is wherein provided with suction port 11 and delivery outlet 12, bearing housing 2 is arranged on the top of bracket 5, by bracket 5, supported, live axle 3 passes bearing housing 2 and extends in the pump housing 1, the end of the live axle 3 in the pump housing 1 is provided with impeller 4, the end that described live axle 3 extends bearing housing 2 is connected with the output shaft 6 of motor (not providing in figure), can drive live axle 3 and impeller 4 to rotate when electric machine rotation.
referring to Fig. 2, this figure provides the surface structure schematic diagram of black box 7.Sealing assembly 7 is mainly comprised of outer cover 7, adjustment component, stuffing box 8, rigid disk 72 and gland 9.Wherein, outer cover 7 the present embodiment provide be a hollow and with the structure of the cylinder of a sealing surface 71, in the central region of sealing surface 71, be provided with the through hole 73 that allows live axle to pass.To be external diameters identical with the internal diameter shape of outer cover 7 or akin two ring felts form for stuffing box 8, region division has the hole 81 that allows live axle to pass in the middle, two ends at the first ring felt are respectively arranged with radially spigot and socket type step 82, be used for hindering in slurry stream hand-hole 81, and in two ends of the second ring felt along being axially provided with spigot and socket type step 84, being used for hindering slurries infiltrates in live axle, step 82 and 84 the spacing that can radially adjust easily between itself and live axle is set, also can prevent that slurries from axially and radially infiltrating simultaneously.While in the early stage stuffing box 8 being installed, between spigot and socket type step 82 and 84 transverse section, can leave respectively gap, and after the internal diameter 83 of stuffing box 8 weares and teares, by adjustment component, push rigid disk 72 and can will between the internal diameter of stuffing box 8 83 and the external diameter of live axle, adjust to suitable position.Gland 9 is the parts for closed cover 7 another faces, at the internal surface of gland 9, is provided with the convex that can be inserted in stuffing box 8, to prevent that stuffing box 8 or felt from rotating when the work.Two semicircle rigid disks 72 that dock are also installed between the internal surface of outer cover 7 and the outer surface of stuffing box 8, and this rigid disk 72 is mainly used for adjusting easily the distance between stuffing box 8 and live axle.In order to prevent that rigid disk 72 is along with drive shaft turns, at the middle part of each rigid disk 72, be provided with a radial projection 74.Between two semicircle rigid disks 72, can adopt bayonet joint or between to leave intended distance.Adjustment component is that adjustment component can adopt various structures for directly adjusting the parts of distance between stuffing box 8 and live axle, its objective is for pushing tow rigid disk 72 radially.What in the present embodiment, adopt is by the radial direction through hole 75 and the structure that is screwed in the adjustment bolt 76 in radial direction through hole 75 that are arranged on outer cover 7.Radial direction through hole 75 is radially provided with four equally spacedly along outer cover 7, and each radial direction through hole 75 is all provided with an adjustment bolt 76.When adjusting, as long as screw adjustment bolt 76, can in turn promote rigid disk 72 and stuffing box 8, to realize the object of adjustment.
Claims (4)
1. the slag stock pump of black box is installed, this slag stock pump comprises and is provided with the pump housing of suction port and delivery outlet and by the bearing housing of bracket support, and passing bearing housing and extending to the live axle in the pump housing by driven by motor, the end of this live axle in the pump housing is provided with the assembly of impeller, it is characterized in that: the position that described live axle contacts with the pump housing is provided with black box, sealing assembly comprises and is provided with the outer cover of screw radially and is arranged on the stuffing box in outer cover, and be arranged on outer cover radially in screw for adjusting the adjustment bolt of distance between stuffing box and live axle, on the outer surface of outer cover, gland is installed.
2. slag stock pump according to claim 1, it is characterized in that: the semicircle rigid disk that is separated with certain distance between two is installed between the internal surface of described outer cover and stuffing box outer surface, on semicircle rigid disk, is provided with the radial projection that at least one prevents that stuffing box from rotating.
3. slag stock pump according to claim 1, is characterized in that: described stuffing box comprises two the first ring felts that are axially affixed and the second ring felt, and on gland, is provided with the convex for preventing that felt from rotating that can insert in felt.
4. slag stock pump according to claim 3, is characterized in that: the opening part of described the first ring felt along being radially provided with spigot and socket type step, and the opening part of the second ring felt along being axially provided with spigot and socket type step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482733.4U CN203404121U (en) | 2013-08-08 | 2013-08-08 | Slurry pump provided with sealing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482733.4U CN203404121U (en) | 2013-08-08 | 2013-08-08 | Slurry pump provided with sealing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404121U true CN203404121U (en) | 2014-01-22 |
Family
ID=49940060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482733.4U Expired - Fee Related CN203404121U (en) | 2013-08-08 | 2013-08-08 | Slurry pump provided with sealing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404121U (en) |
-
2013
- 2013-08-08 CN CN201320482733.4U patent/CN203404121U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |