CN204327507U - Tar pump - Google Patents
Tar pump Download PDFInfo
- Publication number
- CN204327507U CN204327507U CN201420699451.4U CN201420699451U CN204327507U CN 204327507 U CN204327507 U CN 204327507U CN 201420699451 U CN201420699451 U CN 201420699451U CN 204327507 U CN204327507 U CN 204327507U
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- pump
- block
- pump shaft
- bearing
- cover
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Abstract
Tar pump, be supported with pump shaft by fore bearing and rear bearing in bearing housing, there are pump cover and the pump housing in bearing housing front end, is provided with the unshrouded impeller being contained in pump shaft front end within it; Impeller rear portion pump shaft there is sub-propeller, between sub-propeller and impeller, has dividing plate; On rear side of sub-propeller, on pump shaft, cover has axle sleeve, pump cover is fixed with stuffing box gland, has the junction plane matched between stuffing box gland end face and axle sleeve; On front side of rear bearing, pump shaft is provided with controlling mechanism, comprise the fixed cover be installed on pump shaft, bearing pin is connected on front side of fixed cover, bearing pin is equipped with centrifugal-block, and the push and block cover be fixedly connected on pump shaft is sleeved on bearing pin, is furnished with nut in the termination of bearing pin, gap is had between nut and push and block overlap, be provided with return spring between centrifugal-block and pump shaft, bearing pin be set with pump shaft return spring, the outer side of centrifugal-block has the inclined-plane matched with push and block cover and fixed cover.This tar pump seal is effective, can cool in time in bearing housing, and entering foreign material in the pump housing can be sheared at any time, does not block.
Description
Technical field
The utility model relates to a kind of pump, particularly a kind of tar pump of tar conveying.
Background technique
Current tar pump adopts intermediate support mostly, single-stage cantilever structure, double shrouded wheel, packing seal, the external ring water-cooled of after the bearing box.When this kind of tar pump runs well, packing seal place has weeping, reason is that wire packing resistance to high temperature is unstable, and tar temperature about 300 DEG C, under worst hot case, filler is difficult to the operating pressure overcoming impeller cavity, the impacting force of filler is difficult to control to appropriate level in addition, and cross pine and can produce leakage, tension axle sleeve temperature is high, axle sleeve serious wear, air horsepower increases.When pump stops, owing to having certain media in pipeline, can be leaked out by filler place, not only not environmentally but also not energy-conservation.Impeller adopts front and back choma to add balanced hole structure mostly, although this structure efficiency is high, easily produces impeller eye blocking phenomenon in tar containing during fiber impurity, and pump stops after cooling, and tar residual in pump case solidifies, and is not easy to start next time.
Summary of the invention
The purpose of this utility model is to provide a kind of operation and seals, good sealing effect, do not leak, can cool in time in bearing housing, enters that foreign material in the pump housing can be sheared at any time, nonclogging tar pump with can automatically regulate when shutting down, and overcomes the deficiencies in the prior art.
Tar pump of the present utility model, comprises bearing housing, in bearing housing, be supported with pump shaft by fore bearing and rear bearing, and the front end of bearing housing is provided with pump cover and the pump housing, is provided with at the inside cavities of pump cover and the pump housing composition impeller being arranged on pump shaft front end; Described impeller is open type, the rear portion pump shaft of impeller is provided with sub-propeller, between sub-propeller and impeller, is provided with dividing plate; On rear side of sub-propeller, pump shaft is set with axle sleeve, pump cover is fixed with stuffing box gland, between the end face of stuffing box gland and described axle sleeve, have the junction plane matched;
The front side pump shaft of rear bearing is provided with controlling mechanism, described controlling mechanism comprises the fixed cover be fixedly set on pump shaft, the front side of fixed cover has been threaded bearing pin, bearing pin is set with centrifugal-block, the push and block cover be fixedly connected on pump shaft is sleeved on bearing pin, nut is furnished with in the termination of bearing pin, fixing pin is provided with between nut and bearing pin, gap is had between nut and push and block overlap, centrifugal-block return spring is provided with between described centrifugal-block and pump shaft, described bearing pin, centrifugal-block, centrifugal-block return spring is two groups and is symmetrical arranged, bearing pin is set with pump shaft return spring, the outer side of described centrifugal-block has the inclined-plane matched with push and block cover and fixed cover.
Described push and block cover is fixedly connected with briquetting by housing screw, and snap ring is pressed in the axial trough on pump shaft by briquetting.
The cooling coil connected with cooling system is provided with in described bearing housing.
Tar pump of the present utility model compared with prior art tool has the following advantages:
Former centrifugal pump basis is improved, increase regulator mechanism, when realizing pump startup, along with the raising of pump shaft rotating speed, the centrifugal-block of regulator opens gradually under centrifugal action, overlapped by slope driving push and block and drive pump shaft and on rotor part by setting value axial advancement, axle sleeve is separated with the junction plane of stuffing box gland, pump starts to run well, and due to the effect of sub-propeller, the pressure of Seal cage reduces gradually, until pressure balance, when realizing pump work, medium does not leak outside, air in leak, achieve dynamic balancing; When pump stops, in controlling mechanism, centrifugal-block is drawn close to axle center gradually under the effect of centrifugal-block return spring, and pump shaft and rotor part be displacement backward under the effect of pump shaft return spring, and axle sleeve and stuffing box gland are fitted gradually, No leakage when making shutdown;
Adopt unshrouded impeller to add sub-propeller structure, impure or fibrous medium can be pumped, simultaneously again can more effective balance portion axial force by sub-propeller, reduce bearing burden;
Sub-propeller is provided with fixed guide vane in chamber, eliminates sub-propeller light rear surface liquid and rotates, guarantee sub-propeller wheel hub pressure and sub-propeller maximum outside diameter place pressure roughly equal, improve the sealability of sub-propeller with this;
Sub-propeller outside dimension calculates according to actual conditions, guarantees the pressure balance when rated point operates of every platform pump, zero leakage;
Adopt cooling coil to force cooling to bearing housing lubricant oil, guarantee that front and back bearings can be lowered the temperature in sufficient lubrication, improve bearing life.
To sum up, tar pump of the present utility model seals, good sealing effect, does not leak, can cool in time in bearing housing, enters that foreign material in the pump housing can be sheared at any time, nonclogging advantage with having when shutting down automatically to regulate running.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A portion close-up schematic view shown in Fig. 1;
Fig. 3 is the B-B cross-sectional configuration schematic diagram shown in Fig. 2.
Embodiment
As shown in Figure 1: tar pump of the present utility model comprises bearing housing 5, in bearing housing 5, be supported with pump shaft 4 by fore bearing 6 and rear bearing 18, the front end of bearing housing 5 is bolted and is provided with pump cover 1 and the pump housing 15.
The inside cavities formed at pump cover 1 and the pump housing 15 is provided with the impeller 16 being arranged on pump shaft 4 front end.
Impeller 16 is open type.The rear portion pump shaft 4 of impeller 16 is provided with the sub-propeller 12 simultaneously rotated with pump shaft 4 and impeller 16, is provided with dividing plate 13 between sub-propeller 12 and impeller 16, dividing plate 13 is relative fixing with pump cover 1.
On rear side of sub-propeller 12, pump shaft 4 is set with axle sleeve 2; pump cover 1 is fixed with stuffing box gland 3; have the junction plane 17 matched between the end face of stuffing box gland 3 and axle sleeve 2, when namely shutting down, stuffing box gland 3 and axle sleeve 2 are close to junction plane 17 place is relative, and during operation, junction plane 17 is in separated position.
As shown in Figure 2,3: on the front side pump shaft 4 of rear bearing 18, be provided with controlling mechanism, controlling mechanism comprises the fixed cover 11 be fixedly set on pump shaft 4, and the inner ring of rear bearing 18 is fixedly set in outside fixed cover 18.The front side of fixed cover 11 is connected with the threaded one end of bearing pin 9, bearing pin 9 is set with centrifugal-block 10, the push and block cover 8 be fixedly connected on pump shaft 4 is sleeved on bearing pin 9, nut 20 is furnished with in the termination of bearing pin 9, be provided with between nut 20 and bearing pin 9 for fixing pin spacing with radial direction to axial, between nut 20 and push and block overlap 8, leave gap 7.Centrifugal-block return spring 25 is provided with between centrifugal-block 10 and pump shaft 4.Bearing pin 9, centrifugal-block 10, centrifugal-block return spring 25 are two groups and are symmetrical arranged (referring to Fig. 3).Bearing pin 9 is set with pump shaft return spring 26, and the outer side of centrifugal-block 10 has to overlap 8 and the inclined-plane 14 of symmetry that matches of fixed cover 11 with push and block.
Above-mentioned push and block cover 8 with the mode that is fixedly connected with of pump shaft is: push and block are overlapped 8 and are fixedly connected with briquetting 21 by housing screw 22, and snap ring 23 is pressed in the axial trough 24 on pump shaft 4 by briquetting 21, and snap ring 23 is two semi-ring compositions.
The cooling coil 19 connected with cooling system is provided with in bearing housing 5.
Pump housing periphery and pump cover cavity can arrange insulation jacket, after pump stops or before starting next time, connect high-temperature steam and are incubated, guarantee that tar melts after not solidifying or solidifying as early as possible, guarantee that pump normally can start running in insulation jacket.
Claims (3)
1. a tar pump, comprise bearing housing (5), pump shaft (4) is supported with by fore bearing (6) and rear bearing (18) in bearing housing (5), the front end of bearing housing (5) is provided with pump cover (1) and the pump housing (15), and the inside cavities formed at pump cover (1) and the pump housing (15) is provided with the impeller (16) being arranged on pump shaft (4) front end; It is characterized in that: described impeller (16) is open type, the rear portion pump shaft (4) of impeller (16) is provided with sub-propeller (12), between sub-propeller (12) and impeller (16), is provided with dividing plate (13); Sub-propeller (12) rear side pump shaft (4) is set with axle sleeve (2), pump cover (1) is fixed with stuffing box gland (3), between the end face of stuffing box gland (3) and described axle sleeve (2), has the junction plane (17) matched;
The front side pump shaft (4) of rear bearing (18) is provided with controlling mechanism, described controlling mechanism comprises the fixed cover (11) be fixedly set on pump shaft (4), the front side of fixed cover (11) has been threaded bearing pin (9), bearing pin (9) is set with centrifugal-block (10), the push and block cover (8) be fixedly connected on pump shaft (4) is sleeved on bearing pin (9), nut (20) is furnished with in the termination of bearing pin (9), fixing pin is provided with between nut (20) and bearing pin (9), gap (7) is had between nut (20) and push and block cover (8), centrifugal-block return spring (25) is provided with between described centrifugal-block (10) and pump shaft (4), described bearing pin (9), centrifugal-block (10), centrifugal-block return spring (25) is two groups and is symmetrical arranged, bearing pin (9) is set with pump shaft return spring (26), the outer side of described centrifugal-block (10) has the inclined-plane (14) matched with push and block cover (8) and fixed cover (11).
2. tar pump according to claim 1, is characterized in that: described push and block cover (8) is fixedly connected with briquetting (21) by housing screw (22), and snap ring (23) is pressed in the axial trough (24) on pump shaft (4) by briquetting (21).
3. tar pump according to claim 1 and 2, is characterized in that: be provided with the cooling coil (19) connected with cooling system in described bearing housing (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420699451.4U CN204327507U (en) | 2014-11-20 | 2014-11-20 | Tar pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420699451.4U CN204327507U (en) | 2014-11-20 | 2014-11-20 | Tar pump |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204327507U true CN204327507U (en) | 2015-05-13 |
Family
ID=53163874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201420699451.4U Active CN204327507U (en) | 2014-11-20 | 2014-11-20 | Tar pump |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN204327507U (en) |
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2014
- 2014-11-20 CN CN201420699451.4U patent/CN204327507U/en active Active
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Legal Events
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant |