CN206397747U - A kind of Pulp pump for wet desulfurization system - Google Patents
A kind of Pulp pump for wet desulfurization system Download PDFInfo
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- CN206397747U CN206397747U CN201621483684.6U CN201621483684U CN206397747U CN 206397747 U CN206397747 U CN 206397747U CN 201621483684 U CN201621483684 U CN 201621483684U CN 206397747 U CN206397747 U CN 206397747U
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- bearing
- pump shaft
- pallet body
- impeller
- spiral case
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Abstract
The utility model discloses a kind of Pulp pump for wet desulfurization system, including pump shaft, spiral case, pallet body, mechanical seal；Impeller is set in the spiral case, backplate includes vertical section and bending segment after backplate after being set at the rear of impeller, rear backplate, and vertical section coordinates with impeller clearance, the top of vertical section is coordinated with spiral case by 5 ° of the conical surface, and the end of the bending segment is bolted in mechanical seal；The cavity passed through inside the pallet body provided with pump shaft, the pallet body open top covers at its open top and is provided with bay cover；Pump shaft is fixedly connected through pallet body, with the impeller inside spiral case, fore bearing group and rear bearing group is respectively arranged with the contact position at pallet body and pump shaft two ends, pump shaft is rotatably installed in fore bearing group and rear bearing group.The utility model compact conformation, convenient disassembly, transfer efficiency are high, and difficulty of processing and manufacturing cost reduction, and part installation accuracy is high, and its service life is greatly prolonged.
Description
Technical field
The utility model is related to a kind of Pulp pump for wet desulfurization system, belongs to centrifugation pump technical field.
Background technology
With pay attention to day by day of the society to environmental protection, control of the country to fume emission is more and more stricter, in flue gas
Sulfur dioxide (SO2) emissions can form acid rain into air, and very big harm is produced to environment, it then becomes necessary to carry out desulfurization to flue gas.
At present, the most frequently used sulfur removal technology is divided into wet desulphurization and dry desulfurization, and many slurries with lime stone or lime of wet desulphurization are made
For desulfurizing agent, spray washing is carried out to flue gas in absorption tower.
It is generally common mono-hull Pulp pump to be presently used for conveying lime stone or the circulating pump of lime slurry, with impeller and pair
Impeller provides power, uses packing seal.But, this Pulp pump is complicated, assembly precision is low, prepares cost height, conveying
Efficiency is low, it is impossible to fully meet the demand of conveying lime stone or lime slurry.
Utility model content
To solve the above mentioned problem that prior art is present, the purpose of this utility model be to provide a kind of difficulty of processing it is low,
The Pulp pump for wet desulfurization system that machining accuracy is high, transfer efficiency is high.
In order to solve the above technical problems, the technical scheme that the utility model is used is：
A kind of Pulp pump for wet desulfurization system, including pump shaft, spiral case, pallet body, the machine being arranged on the outside of pump shaft
Tool is sealed；Impeller is set in the spiral case, the rear backplate coordinated with its gap is set at the rear of impeller, the rear backplate includes
Vertical section and bending segment, vertical section coordinate with impeller clearance, and top and the spiral case of vertical section are coordinated by 5 ° of the conical surface, institute
The end for stating bending segment is bolted in mechanical seal；
The cavity passed through inside the pallet body provided with pump shaft, the pallet body open top, the lid at its open top
Conjunction is provided with bay cover；Pump shaft is fixedly connected through pallet body, with the impeller inside spiral case, in pallet body and pump shaft two ends
Contact position be respectively arranged with fore bearing group and rear bearing group, pump shaft is rotatably installed in fore bearing group and rear bearing group；
The fore bearing group includes fore bearing, front axle pressure cap, preceding labyrinth seal set, the fore bearing, preceding labyrinth seal
Set is set in pump shaft surface and is rotatably assorted with pump shaft side by side, and bay cover is abutted on the outside of fore bearing；The front side of the fore bearing is also
Front axle pressure cap is set, and front axle pressure cap is fixed by screws on bay cover；Maze trough is provided with the front axle pressure cap,
And be located by connecting by maze trough with preceding labyrinth big envelope；
The rear bearing group includes rear bearing housing, rear bearing gland, rear interstage sleeve and rear bearing；The rear bearing housing passes through spiral shell
Nail is fixed with bay cover, and gap coordinates between its axial outer end face and bay cover；Bearing after being set in rear bearing housing, in rear axle
Bearing gland after the rear side setting of case is held, rear interstage sleeve is additionally provided between rear bearing gland and pump shaft；Bearing passes through rear interstage sleeve afterwards
Location sealing is realized with rear bearing gland.
Further improvement of the utility model is：In 20 ° of cone angles between the bending segment and pump shaft of the rear backplate.
Further improvement of the utility model is：The rear of the spiral case is additionally provided with tailstock, the tailstock and bracket
Positioned, be bolted by seam between body, between tailstock and rear backplate, between tailstock and spiral case.
Further improvement of the utility model is：The pallet body and bay cover are between horizontal middle open type, both
Pad, which is provided with, is used for sealed pad.
Further improvement of the utility model is：The front axle pressure cap, the inside of rear bearing gland are provided with bone
Frame oil sealing.
Further improvement of the utility model is：Before being additionally provided between the front axle pressure cap and preceding labyrinth seal set
Sealing ring, is provided with rear sealing ring between rear bearing gland and rear interstage sleeve.
Further improvement of the utility model is：The preceding sealing ring is set to one, and rear sealing ring is set to side by side
Pad is provided with after two, two set between sealing ring.
Further improvement of the utility model is：It is between the bearing housing and pallet body, bearing housing and bay cover
Gap coordinates, and is sealed using O-ring.
Further improvement of the utility model is：Suit is additionally provided between the mechanical seal and preceding labyrinth seal set
In the stripping ring on pump shaft, mutually it is locked between stripping ring and preceding labyrinth seal set.
Further improvement of the utility model is：The basic circle of the spiral case hydraulic model and the ratio of impeller outer diameter are little
Axial spacing ratio between axial spacing, fore bearing and the impeller between 1.08, the fore bearing and rear bearing is not less than
1.15.By adopting the above-described technical solution, the technological progress that the utility model is obtained is：
The utility model discloses a kind of Pulp pump for wet desulfurization system, using new structural shape, structure
Compact, convenient disassembly, transfer efficiency is high, can fully meet the use requirement of wet desulfurization system, and difficulty of processing and system
This reduction is caused, the processing of part and installation accuracy are improved, so as to substantially prolongs the service life of Pulp pump.
The utility model further defines the external diameter ratio no more than 1.08 of the basic circle of model and impeller in spiral case water, so that
Significantly improve the transfer efficiency of Pulp pump；Between axial spacing, fore bearing and impeller between restriction fore bearing and rear bearing
Axial spacing ratio be not less than 1.15, so as to ensure that the stability of Pulp pump operation process, the conveying capacity of Pulp pump is kept
It is constant.
The bending segment of backplate is conducive to cooling and the lubrication of integrated mechanical sealing, machine in 20 ° of cone angles after the utility model
Tool sealing is not susceptible to abrasion, and lubricating oil is difficult leakage, and its service life is greatly prolonged.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is close-up schematic view of the present utility model；
Wherein, 1, pump shaft, 2, spiral case, 21, impeller, 22, rear backplate, 23, tailstock, 3, pallet body, 4, bay cover, 5, machinery
Sealing, 61, fore bearing, 62, front axle pressure cap, 63, preceding labyrinth seal set, 64, preceding sealing ring, 71, rear bearing housing, 72, rear axle
Pressure cap, 73, rear interstage sleeve, 74, rear bearing, 75, rear sealing ring, 8, stripping ring.
Embodiment
Describe the utility model in detail below with reference to the accompanying drawings.
A kind of Pulp pump for wet desulfurization system, as shown in Figure 1 and Figure 2, including pump shaft 1, spiral case 2 and a support are made
Pallet body 3, the external stability of pump shaft 1 sets mechanical seal 5.
Impeller 21 is provided with the spiral case 2, the front end of impeller 21 and pump shaft 1 is fixed by T-shaped screw thread.In impeller
21 rear sets the rear backplate 22 coordinated with its gap, and the rear backplate 22 includes vertical section and bending segment, vertical section and leaf
Take turns and coordinated at the top of the cooperation of 21 gaps, vertical section with spiral case 2 by 5 ° of the conical surface；It is in 20 ° between the bending segment and pump shaft 1
Cone angle, the end of bending segment is bolted in mechanical seal 5.The mechanical seal 5 is integrated mechanical sealing.It is described
The rear of spiral case 2 is additionally provided with the tailstock 23 being bolted with it, fixed by seam between the tailstock 23 and pallet body 3
Position, be bolted；Positioned, be bolted by seam between tailstock 23 and rear backplate 22.
The cavity that the inside of pallet body 3 is passed through provided with pump shaft 1.The open top of pallet body 3, at its open top
Cover and bay cover 4 is installed.The pallet body 3 and bay cover 4 are that pad is provided with for sealed between horizontal middle open type, both
Fish paper pad.Pump shaft 1 is fixedly connected through pallet body 3, with the impeller 21 inside spiral case 2, in pallet body 3 and pump shaft 1
The contact position at two ends is respectively arranged with the fore bearing group and rear bearing group of thin oil lubricant form, and pump shaft 1 is rotatably installed in fore bearing
In group and rear bearing group.
The fore bearing group includes fore bearing 61, front axle pressure cap 62, preceding labyrinth seal set 63.The fore bearing 61 it is interior
Side is rotatably assorted with pump shaft 1, and its outside abuts bay cover 4, and the preceding labyrinth seal set 63 is arranged on the surface of pump shaft 1, fore bearing
61 front side.The front side of the fore bearing 61 also sets up front axle pressure cap 62, and front axle pressure cap 62 is fixed by screws in bracket
On lid 4.Maze trough is provided with the front axle pressure cap 62, and positioning, sealing are realized by maze trough and preceding labyrinth big envelope 63
Connection.Outside framework oil seal is additionally provided with inside the front axle pressure cap 62, between front axle pressure cap 62 and preceding labyrinth seal set 63 also
Sealing ring 64 before being provided with.
The rear bearing group includes rear bearing housing 71, rear bearing gland 72, rear interstage sleeve 73 and rear bearing 74.The rear bearing
Case 71 is fixed by screw with bay cover 4, and gap coordinates between its axial outer end face and bay cover 4.The rear side of bearing housing 71 afterwards
Bearing gland 72 after setting, the rear inside of bearing gland 72 sets outside framework oil seal；Also set between the rear bearing gland 72 and pump shaft 1
It is equipped with rear interstage sleeve 73.Bearing 74 after being provided between rear bearing housing 71 and pump shaft 1, rear bearing gland 72 and rear interstage sleeve 73 it
Between be provided with rear sealing ring 75, rear sealing ring 75 is abutted against with rear bearing 74；The rear sealing ring 75 is set to two.After described
It is that gap coordinates between bearing housing 71 and pallet body 3, bay cover 4, and is sealed using O-ring.The rear bearing 74 leads to
Later interstage sleeve 73 and rear bearing gland 72 are realized positioning and sealed.
The stripping ring 8 being set on pump shaft 1 is additionally provided between mechanical seal 5 and preceding the labyrinth seal set 63, is dismantled
Mutually it is locked between ring 8 and preceding labyrinth seal set 63.The stripping ring 8 is a point half formula structure, and two semi-rings pass through bolt
It is combined into complete stripping ring.
The basic circle of the hydraulic model of spiral case 2 and the ratio of the external diameter of impeller 21 are not more than 1.08, it is ensured that Pulp pump have compared with
High efficiency；The axial spacing between axial spacing, fore bearing 61 and impeller 21 between the fore bearing 61 and rear bearing 74
Ratio is not less than 1.15, it is ensured that the stability of Pulp pump operating.
The foregoing is only preferred embodiment of the present utility model, it is all according to present utility model application the scope of the claims done it is equal
Deng change and modification, it should all belong to covering scope of the present utility model.
Claims (10)
1. a kind of Pulp pump for wet desulfurization system, it is characterised in that：Including pump shaft（1）, spiral case（2）, pallet body（3）、
It is arranged on pump shaft（1）The mechanical seal in outside（5）；The spiral case（2）Interior setting impeller（21）, in impeller（21）Rear set
The rear backplate coordinated with its gap（22）, the rear backplate（22）Including vertical section and bending segment, vertical section and impeller（21）Between
Gap coordinates, the top of vertical section and spiral case（2）The conical surface by 5 ° is coordinated, and the end of the bending segment is bolted
In mechanical seal（5）On；
The pallet body（3）Inside is provided with pump shaft（1）The cavity passed through, the pallet body（3）Open top, in its open top
Place, which is covered, is provided with bay cover（4）；Pump shaft（1）Through pallet body（3）And positioned at spiral case（2）Internal impeller（21）It is fixed to connect
Connect, in pallet body（3）And pump shaft（1）The contact position at two ends is respectively arranged with fore bearing group and rear bearing group, pump shaft（1）Rotate peace
In fore bearing group and rear bearing group；
The fore bearing group includes fore bearing（61）, front axle pressure cap（62）, preceding labyrinth seal set（63）, the fore bearing
（61）, preceding labyrinth seal set（63）It is set in pump shaft side by side（1）Surface and and pump shaft（1）It is rotatably assorted, fore bearing（61）Outside
Abut bay cover（4）；The fore bearing（61）Front side also set up front axle pressure cap（62）, front axle pressure cap（62）Pass through screw
It is fixed on bay cover（4）On；The front axle pressure cap（62）On be provided with maze trough, and pass through maze trough and preceding labyrinth big envelope
（63）It is located by connecting；
The rear bearing group includes rear bearing housing（71）, rear bearing gland（72）, rear interstage sleeve（73）With rear bearing（74）；After described
Bearing housing（71）Pass through screw and bay cover（4）It is fixed, its axial outer end face and bay cover（4）Between gap coordinate；In rear axle
Hold case（71）Bearing after middle setting（74）, in rear bearing housing（71）Rear side set after bearing gland（72）, rear bearing gland
（72）With pump shaft（1）Between be additionally provided with rear interstage sleeve（73）；Bearing afterwards（74）Pass through rear interstage sleeve（73）With rear bearing gland（72）
Realize location sealing.
2. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The rear backplate
（22）Bending segment and pump shaft（1）Between in 20 ° of cone angles.
3. a kind of Pulp pump for wet desulfurization system according to claim 2, it is characterised in that：The spiral case（2）
Rear be additionally provided with tailstock（23）, the tailstock（23）With pallet body（3）Between, tailstock（23）With rear backplate（22）Between,
Tailstock（23）With spiral case（2）Between positioned, be bolted by seam.
4. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The pallet body
（3）And bay cover（4）For horizontal middle open type, pallet body（3）And bay cover（4）Between be provided be used for sealed pad.
5. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The front axle pressure-bearing
Lid（62）, rear bearing gland（72）Inside be provided with outside framework oil seal.
6. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The front axle pressure-bearing
Lid（62）With preceding labyrinth seal set（63）Between be additionally provided with preceding sealing ring（64）, rear bearing gland（72）With rear interstage sleeve（73）It
Between be provided with rear sealing ring（75）.
7. a kind of Pulp pump for wet desulfurization system according to claim 6, it is characterised in that：The preceding sealing ring
（64）It is set to one, rear sealing ring（75）It is set to sealing ring after two be arranged side by side, two（75）Between be provided with pad.
8. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The bearing housing
（71）With pallet body（3）, bearing housing（71）With bay cover（4）Between be that gap coordinates, and sealed using O-ring.
9. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The mechanical seal
（5）With preceding labyrinth seal set（63）Between be additionally provided with and be set in pump shaft（1）On stripping ring（8）, stripping ring（8）With preceding labyrinth
Sealing shroud（63）Between be mutually locked.
10. a kind of Pulp pump for wet desulfurization system according to claim 1, it is characterised in that：The spiral case（2）
The basic circle and impeller of hydraulic model（21）The ratio of external diameter is not more than 1.08, the fore bearing（61）With rear bearing（74）Between
Axial spacing, fore bearing（61）With impeller（21）Between axial spacing ratio be not less than 1.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621483684.6U CN206397747U (en) | 2016-12-30 | 2016-12-30 | A kind of Pulp pump for wet desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621483684.6U CN206397747U (en) | 2016-12-30 | 2016-12-30 | A kind of Pulp pump for wet desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397747U true CN206397747U (en) | 2017-08-11 |
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ID=59517182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621483684.6U Active CN206397747U (en) | 2016-12-30 | 2016-12-30 | A kind of Pulp pump for wet desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206397747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269590A (en) * | 2017-08-22 | 2017-10-20 | 河北万泉泵业制造有限公司 | A kind of laterally opened double suction centrifugal pump of split |
-
2016
- 2016-12-30 CN CN201621483684.6U patent/CN206397747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269590A (en) * | 2017-08-22 | 2017-10-20 | 河北万泉泵业制造有限公司 | A kind of laterally opened double suction centrifugal pump of split |
| CN107269590B (en) * | 2017-08-22 | 2023-08-22 | 河北万泉泵业制造有限公司 | Split side-open type double-suction centrifugal pump |
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