CN201027659Y - Serum recirculating pump used for single housing flue gas desulfurization - Google Patents
Serum recirculating pump used for single housing flue gas desulfurization Download PDFInfo
- Publication number
- CN201027659Y CN201027659Y CNU2007200663823U CN200720066382U CN201027659Y CN 201027659 Y CN201027659 Y CN 201027659Y CN U2007200663823 U CNU2007200663823 U CN U2007200663823U CN 200720066382 U CN200720066382 U CN 200720066382U CN 201027659 Y CN201027659 Y CN 201027659Y
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- Prior art keywords
- bearing
- pump
- mechanical seal
- impeller
- flue gas
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Abstract
The utility model relates to the circulating pump technical field, in particular to a slurry circulating pump for flue gas desulfurization of a mono shell, wherein, an impeller is arranged inside a pump body; a rear guard plate and a connecting plate are connected to the rear part of the pump body; a mechanical seal is arranged on the connecting plate through which a bearing body component is connected to the pump body; a bearing gland bush, a labyrinth gland, a shaft and a front and rear bearing are arranged on the bearing body component; a bracket body on which an adjusting bolt is arranged is connected with the lower end of the bearing body component; the mechanical seal adopts a packaging type mechanical seal provided with an interior flushing structure; flushing holes are arranged on the impeller. Compared with the prior art, the utility model solves the problems of chloride ion pitting corrosion, corrosion and abrasion; a pump set structure has the characteristics of after-disassembly maintenance, capacity of axial regulation, erosion resistance and wear resistance, thereby the problems of a prior rubber lined pump of tearing of internal linings, deformation of rubber parts, shedding of block rubbers, scoring of internal linings, difficulty in maintenance, etc. are solved; the flushing holes are designed; thereby, the working conditions of the mechanical seal are improved, and the service life of the mechanical seal is significantly prolonged.
Description
[technical field]
The utility model relates to the recycle pump technical field, designs a kind of recycle pump that the limestone-gypsum wet desulphurization device is carried slurries that is used for especially.
[background technique]
As purifying coal-burning power plant's tail gas, absorb SO
2, reduce sulfur method---the limestone-gypsum wet type desulfurizing technology that pollution of atmosphere is most widely used, need the slurry circulating pump of defeated slurries (limestone-gypsum mixed serum).
Now be applied to the slurry circulating pump of this tooling, axially mechanical seal short, well damage in working life; The rubber lined pump that is widely adopted (metal shell, elastometric lining), in use, often occur that liner is torn, phenomenons such as the distortion of glue spare, block rubber come off, liner scuffing, have a strong impact on the normal use of device, and the maintenance of rubber lined pump need dismantle the import and export pipeline, very inconvenient.
[summary of the invention]
Task of the present utility model provides a kind of metal mono-hull flue gas desulfurization pump of improved structure, the pump housing selects for use two phase stainless steel, impeller to select A49 (two-phase stainless white iron) material for use, wear-resistant forward and backward backplate is set, use A49 (two-phase stainless white iron) material, solve chlorion spot corrosion, burn into wear phenomenon; But tear the feature of maintenance axial adjustment, corrosion-resisting wear-proof after pump group structure has open, solved that existing rubber lined pump liner is torn, the distortion of glue spare, block rubber come off, problems such as liner scratches, maintenance difficult; The design flushing hole improves the mechanical seal applying working condition, improves the working life of mechanical seal greatly.
The technical solution of the utility model is as follows:
A kind of mono-hull flue gas desulfurization slurry circulating pump, comprise suction cover, impeller, the pump housing, mechanical seal, bearing body part, connecting plate, apron plate and back backplate, also comprise coupling parts and motor, impeller 2 is housed in the pump housing 4, the rear portion of the pump housing 4 connects back backplate 3 and connecting plate 6, mechanical seal is housed on the connecting plate, bearing body part 7 is connected on the pump housing 4 by connecting plate 6, bearing gland 12 is housed on the bearing part 7, labyrinth bush 13, axle 14 and front and back bearings, the bearing body part lower end connects pallet body 8, be equipped with on the pallet body 8 and regulate bolt 15, the integrated mechanical sealing with interior flushing structure is adopted in above-mentioned mechanical seal, and impeller 2 is provided with flushing hole 18.
Impeller, apron plate and back backplate have adopted A49 (two-phase stainless white iron) material to make, and the pump housing adopts high-grade duplex stainless steel to make.The fore bearing of pump end adopts tapered roller bearing, and the rear bearing of drive end adopts roller bearing.Pallet body lower end bolt attachment bracket.
Flue gas desulfurization pump of the present utility model has following characteristics:
1. pump is the one step single sucking horizontal centrifugal pump, and according to medium different in the difference of each position operation conditions of pump group and material technology, impeller, apron plate, back backplate have adopted A49 (two-phase stainless white iron) material of novel anticorrosive, wear-corrosion resistance; The pump housing then adopts high-grade duplex stainless steel, and two kinds of materials all are suitable for carrying the chloride ion-containing medium, guarantees the requirement of pump group corrosion-resisting wear-proof;
2. rotor is provided with the axial adjustment structure, impeller energy axial adjustment, and the convenient axial clearance that changes impeller and backplate makes pump be in efficient running state;
3. the pump step bearing adopts tapered roller bearing, and drive end bearing adopts roller bearing; Bearing adopts thin oil bath lubrication, has improved the operating conditions of bearing, has improved bearing working life greatly;
4. adopt to strengthen the oil sump design, make bearing lubrication abundant, bearing support is provided with heat radiation gusset and thermometric structure, is convenient to the bearing heat radiation and to the monitoring of bearing running temperature;
5. the integrated mechanical sealing with interior flushing structure, reliability height, long service life are adopted in mechanical seal;
6. design flushing hole is washed near the alluvial solid precipitation machine envelope working surface, and the improvement machine seals operating mode, improves the working life of mechanical seal greatly;
7. the pump group adopts pump pin master to support, and the support supplemental support is considered the asymmetric of volute shape, and the pump pin according to stressing conditions, is designed to arranged off-centre, makes entire pump group security of operation, steady, reduces vibration;
8. for convenient maintenance, tear formula after pump is designed to open, a whole set of rotor part can be pulled out from motor side, need not to dismantle motor, the pump housing and pipeline when dismounting impeller, mechanical seal and shaft assembly.
9. design has three kinds of transmissions and pump seat combining form, can be applicable to requirements different in the reality and field condition respectively.
[description of drawings]
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the axial adjustment structural representation;
Fig. 3 is that the mechanical seal rinsing hole is provided with schematic representation;
Fig. 4 is the pump group first example structure schematic representation (adopting speed reducer connection, split base);
Fig. 5 is the pump group second example structure schematic representation (adopting speed reducer connection, unsplit bedplate);
Fig. 6 is pump group the 3rd example structure schematic representation (adopting motor direct connection, unsplit bedplate);
Referring to Fig. 1 to Fig. 6,1 is suction cover, and 2 is impeller, and 3 is apron plate, 4 is the pump housing, and 5 is the back backplate, and 6 is connecting plate, and 7 is bearing body part, 8 is pallet body, and 9 is support, and 10 are mechanical seal, 11 is tapered roller bearing, and 12 is bearing gland, and 13 is labyrinth bush, 14 is axle, and 15 for regulating bolt, and 16 is nut, 17 is nut, and 18 are flushing hole, and 19 is roller bearing.
[specific embodiment]
Referring to Fig. 4 to Fig. 6, the utility model has three kinds of embodiments, and its main distinction is the Placement and the base setting type of motor and pump.As Fig. 4, connect with speed reducer, and pump head part and motor are separated base support; As shown in Figure 5, use speed reducer to connect, motor, speed reducer and pump head are arranged on the same common base; As shown in Figure 6, use slowspeed machine and pump head direct connection, be arranged on the same base.
As shown in Figure 1, the utility model is equipped with suction cover 1, impeller 2, the pump housing 4, apron plate 3 and back backplate 5 are installed in the front and rear part of the pump housing 4 respectively, mechanical seal 10 is contained on the connecting plate 6, bearing body part 7 is connected on the pump housing 4 by connecting plate 6, pallet body 8 and support 9 are connected by bolt, spring bearing body component 7, and realize axially locating and axial adjustment by the adjusting bolt 15 that is installed on the pallet body 8.
Bearing part 7 is equipped with bearing gland 12, labyrinth bush 13, axle 14 and front and back bearings combination.Bearing part axially uses labyrinth seal, has spill port on the labyrinth bush 13, and the lubricant oil of being convenient to reduce pressure step by step is back in maze trough in the bearing support, guarantees sealing effect.
As shown in Figure 2, in order to guarantee the efficient operation of pump, with regard to the necessary gap of in time regulating impeller and apron plate, the gap of this pump impeller and apron plate should be between 1～2mm, and regulating the gap is to move by adjusting bolt adjusting rotor axial to realize.The mechanical seal limiting board is screwed in the locating slot release mechanism sealing Cock screw; Unclamp the bolt of compression axis bearing assembly; Unclamp and regulate bolt and nut 16, nutting 17, the sense of rotation dish of pressing pump simultaneously moves rotor, till impeller and apron plate friction, fastening nut 16; Nut 17 is unclamped, nutting 16 is 3.5mm according to pitch again, rotates about 1/3 circle and gets final product.Tighten the mechanical seal Cock screw, the limiting stopper of outwarding winding.After the adjustment, before starting once more, must check whether wheel rotation is normal, whether the bearing unit hold-down bolt is tightened with the adjustment bolt, and then primer pump.
As shown in Figure 3, have flushing hole at back shroud of impeller near mechanical seal place, in the pump group running because differential pressure action, medium solution forms in flushing hole place and refluxes, can be to alluvial at cover plate and wheel hub, wash near near the solid matter the mechanical seal working surface, help the proper functioning of mechanical seal, working life that can the prolonged mechanical sealing.
Assembly process of the present utility model is as follows:
1, bracket portion
1) bearings at both ends all needs hot charging, and bearing hot charging temperature is no more than 120 ℃, guarantees that bearing is seated.
When 2) assembling, earlier drive end bearing inner ring, pump step bearing are contained on the axle; The drive end axle bearing outer-ring is packed in the bearing support; With axle and adorned bearing and packed in the bearing support; After bearing all assembles, the end cap at dress two ends, the oil-return groove on end cap and the end bracket enclosed pad should be towards direction straight down, and fastening end cap and bearing support with bolt; Load onto labyrinth bush; Lock washer on the pad is tightened stripped nut.Be placed on the pallet body together at last.
3) screw on and adjust nut on bolt and the hold-down bolt, but do not tighten, after whole pump assembled, when adjusting bearing support and axle and reaching the desired gap of regulation in the gap of the position on the carriage between impeller and apron plate, tighten again and adjust bolt and hold-down bolt upper cap nut.
4) charge of oil timestamp should be coated sealer earlier.
When 5) assembling and dismantling, stop to carry out the cruelty operation, in case collide with finished surface or damage bearing.
2, pump head part
1) joint plate is connected with pallet body, and loads onto back backplate sealing gasket;
2) dress impeller demolition ring notices that the stripping ring connecting bolt is too not tight, guarantees that end face is concordant;
3) dress axle sleeve;
4) installation tool sealing;
5) with the impeller dismantling device impeller level is sling, unclamp dismantling device after tightening impeller, tighten the stripping ring connecting bolt;
6) armored pump body;
7) apron plate is packed in the suction cover;
8) dress suction cover assembly;
9) regulate impeller and apron plate gap and be about 1-2mm;
10) tighten the Cock screw that machine is sealed up, limiting board is screwed out from locating slot and fix;
Working procedure of the present utility model is as follows:
After the correct installation of flue gas desulfurization pump, need guarantee that oil mass is moderate in the bearing support; With the moving rotor of tool shelf, guarantee that rotor rotation is no abnormal; Feed the lubricated cooling water of mechanical seal, regulate lubricated water to required flow and pressure; Whether turn to correct (being seen as clockwise from drive end) of pump checked in some starting; Should open inlet valve before starting, guarantee to be full of in the pump housing slurries or water medium, along with liquid level in the pump constantly raises, gas is discharged from the outlet valve that is installed on the export pipeline, treats that outlet valve arranged gas, closes the outlet gate valve, starts unit; After motor operates steadily, open the sluices again, regulate flow and lift to the range of operation that needs; Liquid medium is by filter screen at the bottom of the tower, and flow out from impeller radial circumference direction the suction side of flowing through, and through pump housing water conservancy diversion, arrives the fluid pipeline at last; During shutdown, should close outlet valve earlier and cut off the electricity supply again.
Claims (4)
1. mono-hull flue gas desulfurization slurry circulating pump, comprise suction cover, impeller, the pump housing, mechanical seal, bearing body part, connecting plate, apron plate and back backplate, impeller (2) is housed in the pump housing (4), the rear portion of the pump housing (4) connects back backplate (3) and connecting plate (6), mechanical seal is housed on the connecting plate, bearing body part (7) is connected on the pump housing (4) by connecting plate (6), bearing gland (12) is housed on the bearing part (7), labyrinth bush (13), axle (14) and front and back bearings, it is characterized in that: the bearing body part lower end connects pallet body (8), be equipped with on the pallet body (8) and regulate bolt (15), the integrated mechanical sealing with interior flushing structure is adopted in above-mentioned mechanical seal, and impeller (2) is provided with flushing hole (18).
2. a kind of mono-hull flue gas desulfurization slurry circulating pump as claimed in claim 1 is characterized in that: impeller, apron plate and back backplate have adopted two-phase stainless white iron material to make, and the pump housing adopts high-grade duplex stainless steel to make.
3. a kind of mono-hull flue gas desulfurization slurry circulating pump as claimed in claim 1 or 2 is characterized in that: the fore bearing of pump end adopts tapered roller bearing, and the rear bearing of drive end adopts roller bearing.
4. a kind of mono-hull flue gas desulfurization slurry circulating pump as claimed in claim 3 is characterized in that: pallet body lower end bolt attachment bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200663823U CN201027659Y (en) | 2007-01-17 | 2007-01-17 | Serum recirculating pump used for single housing flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200663823U CN201027659Y (en) | 2007-01-17 | 2007-01-17 | Serum recirculating pump used for single housing flue gas desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201027659Y true CN201027659Y (en) | 2008-02-27 |
Family
ID=39131866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200663823U Expired - Fee Related CN201027659Y (en) | 2007-01-17 | 2007-01-17 | Serum recirculating pump used for single housing flue gas desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201027659Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410128A (en) * | 2011-09-30 | 2012-04-11 | 东方电气集团东方电机有限公司 | Oil-mist-proof fuel tank cap |
| CN106286396A (en) * | 2016-08-30 | 2017-01-04 | 柳州市酸王泵阀制造有限公司 | A kind of split type desulfurization slurry pump pump housing |
| CN106468269A (en) * | 2016-08-11 | 2017-03-01 | 梁如松 | Using the stainless steel tube welding manufacture formula of falling cultivation liquid circulation pump |
| CN110630510A (en) * | 2019-09-27 | 2019-12-31 | 强大泵业集团行唐泵业有限公司 | Horizontal slurry pump |
-
2007
- 2007-01-17 CN CNU2007200663823U patent/CN201027659Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410128A (en) * | 2011-09-30 | 2012-04-11 | 东方电气集团东方电机有限公司 | Oil-mist-proof fuel tank cap |
| CN106468269A (en) * | 2016-08-11 | 2017-03-01 | 梁如松 | Using the stainless steel tube welding manufacture formula of falling cultivation liquid circulation pump |
| CN106286396A (en) * | 2016-08-30 | 2017-01-04 | 柳州市酸王泵阀制造有限公司 | A kind of split type desulfurization slurry pump pump housing |
| CN110630510A (en) * | 2019-09-27 | 2019-12-31 | 强大泵业集团行唐泵业有限公司 | Horizontal slurry pump |
| CN110630510B (en) * | 2019-09-27 | 2021-04-06 | 强大泵业集团行唐泵业有限公司 | Horizontal slurry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 |