CN203548237U - Low-pressure centrifugal coal slurry pump - Google Patents
Low-pressure centrifugal coal slurry pump Download PDFInfo
- Publication number
- CN203548237U CN203548237U CN201320569042.8U CN201320569042U CN203548237U CN 203548237 U CN203548237 U CN 203548237U CN 201320569042 U CN201320569042 U CN 201320569042U CN 203548237 U CN203548237 U CN 203548237U
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- pump
- coal slurry
- envelope
- pressure centrifugal
- impeller
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Abstract
A low-pressure centrifugal coal slurry pump comprises a pump base, a water inlet elbow and a pump body. The pump body is arranged on the pump base and internally provided with a pump cover, a water discharging volute and a water discharging pipe are sequentially arranged at the left end of the pump cover, and the water inlet elbow, a short water inlet pipe and a water inlet pipe are sequentially arranged at the lower end of the pump cover ; the pump shaft penetrates a pump frame and the pump body with one end connected with an impeller in the pump cover and the other end supported through two sets of bearings. A mechanical seal is arranged between a sealing resistance guide vane and the bearings on the pump shaft in the pump frame and the pump body. The low-pressure centrifugal coal slurry pump is in accordance with an international standard of ISO28258 and a standard of API610 and used for delivering a medium containing about 65% of solid content, and the medium temperature is not more than 15 DEG C. New materials, new process and fine accessories are adopted in the complete set of a system, so that stability and reliability of system operation are guaranteed. The low-pressure centrifugal coal slurry pump has the advantages of low price, reasonable structure, large range of flow control, simple operation, convenience in assembling and disassembling and the like; delivery of coal slurry in coal chemical industry and condition use high in solid content in the chemical industry can be met.
Description
Technical field
The utility model relates to pump, particularly relates to a kind of low pressure centrifugal coal slurry pump.
Background technique
Along with " coal liquefaction " is in the fast development in the world, China takes the lead in having developed " coal liquefaction " direct liquefaction industrialized unit, and wherein coal slurry pump is one of equipment of a kind of key.Traditional coal slurry pump is applicable to carry the solidliquid mixture that abrasion is more intense, contain strong solid particle, as ore pulp, lime-ash, cement slurry, mortar, grit etc., the common content of above-mentioned impurity is between 3-5%, and in power plant desulfurization technique, carbon residue content can reach 30%.But the Environmental Conditions very severe of " coal liquefaction ", coal dust solid content is up to 48.3%, in order to adapt to use in this rugged environment, necessary development of new coal slurry pump, solution solid deposits and blocks the integrity problem of problem, sealing in certain region, just likely work normally, to traditional coal slurry pump, must be improved.Could meet the conveying of Coal Chemical Industry coal slurry, and chemical industry is used containing the high operating mode of solid content.
Summary of the invention
The purpose of this utility model will provide a kind of low pressure centrifugal coal slurry pump exactly, and it can overcome the deficiency that prior art exists.The purpose of this utility model is to realize like this, a kind of low pressure centrifugal coal slurry pump, comprise pump seat, water inlet bend pipe, pump cover, the pump housing, on pump seat, be provided with the pump housing, in the pump housing, be built-in with pump cover, the left end of pump cover is disposed with water outlet spiral case, outlet pipe, and lower end is disposed with into water bend pipe, water inlet short tube, intake pipe; Pump shaft is through pump bracket, the pump housing, and one end connects with the impeller in pump cover, and the other end, by two groups of bearings, is characterized in that: on the pump shaft in pump bracket, the pump housing, between resistance envelope stator and bearing, organic envelope is set.
What described machine envelope adopted is back-to-back double mechanical seal;
Between described machine envelope and impeller, be disposed with resistance block plate, resistance envelope stator, in the inner chamber forming, be provided with resistance envelope impeller between resistance block plate and resistance envelope stator;
Described machine envelope sealing liquid adopts No. 32 machine oil of 85% diesel oil+15%;
Impeller adopts the downward vertical structure of closed suction port, the buffer area between machine envelope and resistance envelope stator, and intermittence is injected micro-isolated water or is injected pressure-sustaining gas.
The utility model meets international standard ISO28258 and API610 standard, and for delivery of the medium containing certain impurity, in medium, solid content can reach 65% left and right, and fed sheet of a media temperature is not more than 150 ℃.Whole system adopts new material, new process and high-quality accessory, has guaranteed stability, the reliability of system works.Its performance can meet user's usage requirement completely, have cheap, rational in infrastructure, flow adjustment range is large, the feature such as simple to operate, easy to loading and unloading.The utility model meets the conveying of Coal Chemical Industry coal slurry, and chemical industry is used containing the high operating mode of solid content.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
1. pump seat, 2. water inlet bend pipe, 3. pump cover, the 4. pump housing, 5. impeller, 6. water outlet spiral case, 7. water outlet short tube, 8. outlet pipe, 9. resistance envelope impeller, 10. intake short tubes, 25 intake pipes of resistance block plate, 11. machine envelopes, 12. pump brackets, 13. block water plates, 14. lower bearing glands, 15. lower bearing boxes, 16. dust shield cases, 17. pump shafts, 18. upper bearing (metal) boxes, 19. upper bearing (metal) glands, 20. coupling parts, 21. electric machine supports, 22. vertical machines, 23. resistance envelope stators, 24..
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail;
A kind of low pressure centrifugal coal slurry pump, impeller adopts enclosed construction, forward and backward cover plate is equipped with resistance envelope impeller, cancelled impeller ring to reduce wear simultaneously, the resistance envelope impeller of front shroud can effectively reduce the part alluvial of coal slurry, resistance envelope impeller on back shroud can be use up maximum flow and be stoped coal slurry flow and reduce axle machine sealing position pressure to axle machine sealing position, simultaneously can balance portion axial force.After impeller, installed resistance envelope impeller additional, more effectively impeller and axle machine envelope have been isolated.
The axial seal of pump adopts back-to-back double mechanical seal, and handicapping envelope stator before interior terminal envelope, to coordinate resistance envelope impeller that coal slurry is thrown away.This container-type shaft completes end cap, tail-hood, machine envelope, axle sleeve and assemble and carry out disposablely after static pressure experiment being inserted in pump shaft assembling before being enclosed in and dispatching from the factory, entirety mounting or dismounting conveniently.This machine seals threaded pump and circulation seal liquid, can spring bearing beating with minimizing pump shaft.This bearing is cooling by oil sealing, and the cooling of oil sealing realized by cooling tube in Siphon pot.
Pump adopts the downward vertical structure of suction eye, buffer area between machine envelope and resistance envelope stator, intermittence is injected micro-isolated water or is injected pressure-sustaining gas, to improve the running environment of mechanical seal, make mechanical seal operation more reliable, the working life of prolonged mechanical sealing simultaneously.During concrete enforcement, the utility model comprises that the parts such as Double End unit loading type machine envelope and sealing liquid auxiliary system, elastic dowel pin shaft coupling, vertical adjustable frequency motor, pump seat, instrumentation and control system form.
The utility model medium, by radially sucking, is radially discharged.From coupling to pump direction, to see from the top down, pump is clockwise direction rotation.
The main parts size of pump has pump seat, pump bracket, pump cover, the pump housing, electric machine support, intake pipe, water inlet short tube, water inlet bend pipe, outlet pipe, water outlet short tube, water outlet spiral case, impeller, resistance envelope impeller, stator, resistance block plate, axle, mechanical seal parts and bearing part etc.Because the abrasion of medium is larger, pump cover, water outlet spiral case, stator and resistance block plate, impeller, sub-propeller are selected Ni-hard material, and the material of pump shaft is 3Cr13.
Consider the impact of concentration of medium inequality, pump adopts vertical structure.Impeller can upwards be dismantled together with pump bracket entirety, and pump import and export pipeline is motionless.This kind of structural design greatly facilitates maintenance.In order to prevent bearing running hot, thus at bearing support, be designed with cooling mechanism, in addition cooling.On intake pipe and outlet pipe, be provided with the screw that installs and measures instrument and apparatus.Impeller, resistance envelope impeller, pump shaft, coupling and single row angular contact ball bearing etc. are the rotor of pump, and bearing part is supporting the rotor part of pump, the axial force of rolling bearing bearing pump and radial force.
Pump is connected with motor by elastic dowel pin shaft coupling, by motor, is directly driven.The sealing liquid auxiliary system of machine envelope is pressed API682 standard flush plan53 arrangements.After the leak detection of the hot rainbow of TS2000 custom, add sealing liquid (insulating liquid) after scale liquid position, open charging valve, can open pump after being forced into 0.4Mpa.In the pressure reduction that sealing liquid produces while being rotated by the helical pump in the sealing of M7F/65 standard type and oil circulation, siphonage circulates.Sealing liquid adopts No. 32 machine oil of 85% diesel oil+15%.The whole system integrated installations such as pump, vertical type motor, sealing liquid auxiliary system, control system are on same shared pump seat, rationally distributed, greatly simplified the workload that device context is installed, to guarantee that mounting process, installation quality comply with relevant regulations.
To main pump inlet pressure gauge, delivery gauge, and the measuring instrument such as pressure gauge of sealing liquid auxiliary system, thermometer, level meter carries out system detection; Thermal siphon tank is established low liquid level fluid infusion warning, sealing liquid system is established the switching value signals such as low-pressure warning.Above-mentioned signal is passed to control cabinet by on-the-spot electrical junction box, can monitor and pumping system operation.The direct Access Control cabinet of outside 4-20mA analog signals is to regulate revolution speed.
Claims (5)
1. a low pressure centrifugal coal slurry pump, comprise pump seat, water inlet bend pipe, pump cover, the pump housing, on pump seat, be provided with the pump housing, in the pump housing, be built-in with pump cover, the left end of pump cover is disposed with water outlet spiral case, outlet pipe, and lower end is disposed with into water bend pipe, water inlet short tube, intake pipe; Pump shaft is through pump bracket, the pump housing, and one end connects with the impeller in pump cover, and the other end, by two groups of bearings, is characterized in that: on the pump shaft in pump bracket, the pump housing, between resistance envelope stator and bearing, organic envelope is set.
2. a kind of low pressure centrifugal coal slurry pump according to claim 1, is characterized in that: what described machine envelope adopted is back-to-back double mechanical seal.
3. a kind of low pressure centrifugal coal slurry pump according to claim 1, is characterized in that: between described machine envelope and impeller, be disposed with resistance block plate, resistance envelope stator, in the inner chamber forming, be provided with resistance envelope impeller between resistance block plate and resistance envelope stator.
4. a kind of low pressure centrifugal coal slurry pump according to claim 1, is characterized in that: impeller adopts the downward vertical structure of closed suction port.
5. according to a kind of low pressure centrifugal coal slurry pump described in claim 1 or 2 or 3, it is characterized in that: the buffer area between machine envelope and resistance envelope stator, intermittence is injected micro-isolated water or injected pressure-sustaining gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569042.8U CN203548237U (en) | 2013-09-14 | 2013-09-14 | Low-pressure centrifugal coal slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569042.8U CN203548237U (en) | 2013-09-14 | 2013-09-14 | Low-pressure centrifugal coal slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548237U true CN203548237U (en) | 2014-04-16 |
Family
ID=50466361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569042.8U Expired - Lifetime CN203548237U (en) | 2013-09-14 | 2013-09-14 | Low-pressure centrifugal coal slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511322A (en) * | 2013-09-14 | 2014-01-15 | 江苏飞跃机泵制造有限公司 | Low-pressure centrifugal coal slurry pump |
| CN104314835A (en) * | 2014-10-21 | 2015-01-28 | 吉首长潭泵业有限公司 | Upright pipeline mortar pump |
-
2013
- 2013-09-14 CN CN201320569042.8U patent/CN203548237U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511322A (en) * | 2013-09-14 | 2014-01-15 | 江苏飞跃机泵制造有限公司 | Low-pressure centrifugal coal slurry pump |
| CN104314835A (en) * | 2014-10-21 | 2015-01-28 | 吉首长潭泵业有限公司 | Upright pipeline mortar pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |