CN202558273U - Gear type variable pressure dry powder pump - Google Patents
Gear type variable pressure dry powder pump Download PDFInfo
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- CN202558273U CN202558273U CN2012201939189U CN201220193918U CN202558273U CN 202558273 U CN202558273 U CN 202558273U CN 2012201939189 U CN2012201939189 U CN 2012201939189U CN 201220193918 U CN201220193918 U CN 201220193918U CN 202558273 U CN202558273 U CN 202558273U
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Abstract
The utility model provides a gear type variable pressure dry powder pump. A powder inlet, a powder suction chamber, a gear chamber, a powder pressing chamber and a powder outlet are arranged on a pump body and sequentially connected with one another from top to bottom, a front end cover and a rear end cover are arranged on the front portion and the rear portion of the gear chamber and used for sealing the gear chamber, a driving gear and a driven gear which are horizontally parallel and are meshed with each other are arranged in the gear chamber, bosses are arranged on inner walls of the left side and the right side of the gear chamber, driving gear teeth on the driving gear are provided with structures which extend and withdraw along the radial direction of the gear, driving gear tooth extending and withdrawing pieces can withdraw along the radius direction of the gear when the driving gear teeth contact with the bosses, the driving gear tooth extending and withdrawing pieces extend to return to an original position when the driving gear teeth are disconnected with the bosses, and the structure of the driving gear is identical to that of the driven gear. The gear type variable pressure dry powder pump has the advantages of being safe, reliable, economical and particularly applicable to coal gasification devices and can be widely used in industries of energy resources, machinery, chemical engineering, steel, pharmacy and the like.
Description
Technical field
The utility model belongs to clean coal power generation and chemical field, relates to a kind of equipment of transformation delivery of dry powder.
Background technology
That the energy and the chemical system that turns to the basis with coal gas becoming is efficient in the world wide, cleaning, the hot spot technology and the important directions of development and utilization coal economically.High pressure concentrated phase strength is carried and is widely used in clean coal utilization and chemical field, and lock bucket system has been adopted in the processing of powder and conveying, comprises the systems such as transformation conveying, ash disposal and slagging-off of powder.
Powder lock bucket system schematic such as Fig. 5, in this system, powder normal pressure storehouse is a low-pressure system, and the powder feed hopper is a high-pressure system, and lock bucket jar is high pressure, low pressure alternate system.The powder entering normal pressure storehouse of handling well when material level is hanged down in jar demonstration of lock bucket, is closed material valve and pressure balance valve between locking bucket jar and the high pressure feed hopper, and is opened blow off valve and carry out exhaust; When the differential pressure of lock bucket jar to normal pressure, the material valve of opening between lock bucket jar and the normal pressure storehouse feeds in raw material; When lock bucket jar shows high charge level, close material valve and blow off valve between two jars, stop feed, and lock bucket jar is carried out pressurising with high pressure gas, when the pressure of lock bucket jar rises to pressure with the high pressure feed hopper when identical, stop pressurising.When the high pressure feed hopper shows low material level, open the pressure balance valve between lock bucket jar and the high pressure feed hopper, when treating that two pressure tanks are identical, the material valve between opening two jars, powder is from a lock bucket jar entering high pressure feed hopper; When the high pressure feed hopper shows high charge level, close material valve and pressure balance valve between two jars, stop feed.The pressure of high pressure feed hopper is remained unchanged by pressurising wind, and fluidized wind carries out fluidisation to the powder of high pressure feed hopper bottom, and the powder after the fluidisation gets into high-tension apparatus through transfer line.
In said system, because the operation of lock bucket jar is the process of a pressure alternation, operating conditions is more abominable; Failure frequency is higher, and lock bucket jar is easy to generate " bridge formation " phenomenon in the blanking process, cause blanking not smooth; Need repeatedly the blanking fully of broken bridge ability; Prolong the blanking time, increased the work load of operating personal, influenced high-tension apparatus safety, stable and failure-free operation.
The utility model content
Technical matters:The utility model is to lock bucket jar defective or the deficiency that exist in the prior art, provides a kind of and can carry out powder transformation, conveying, no dust pollution simultaneously, can substitute the lock bucket and jar realized the gear type transformation dry powder pump that transformation is carried.
Technical scheme:The gear type transformation dry powder pump of the utility model, the pump housing are provided with from top to bottom bonded assembly powder inlet, suction powder chamber, gear cavity, press-powder chamber and powder outlet successively, and the front and back of gear cavity are respectively arranged with front end cover and rear side housing, and gear cavity is sealed; Be provided with horizontal direction driving gear arranged side by side and intermeshing and driven gear in the gear cavity; The axle center of driving gear has been horizontally disposed with axle drive shaft; The axle center of driven gear has been horizontally disposed with driven gear shaft, and the rear and front end of axle drive shaft and driven gear shaft is installed on front end cover and the rear side housing respectively; Be respectively arranged with a boss on the inwall of the gear cavity left and right sides; The active gear teeth on the driving gear have along the structure of gear radial expansion; Initiatively gear teeth extensible member can shrink along the tooth radius direction when the active gear teeth contact with boss; Initiatively gear teeth extensible member stretches and resets when the active gear teeth and boss disengage, and driven gear is identical with the structure of driving gear.
In the utility model, initiatively the structure along the gear radial expansion of the gear teeth is: initiatively be inlaid with initiatively gear teeth extensible member and high pressure spring in the groove of gear teeth outboard end, the high pressure spring is arranged on bottom the active gear teeth extensible member and initiatively between the gear teeth body.
In the utility model, driving gear and driven gear are the number of teeth, modulus, the identical a pair of involute external meshing tooth of profile of tooth.
In the utility model, inhale powder chamber and press-powder chamber and separate by the point of engagement of driving gear and driven gear.
Beneficial effect:Compared with prior art, the utlity model has following advantage:
Jar compare with lock bucket in the existing lock bucket system, simple and compact for structure, easy for installation, volume is little, and is in light weight, and mounting arrangements does not receive the restriction in factory building space, and construction costs is low;
Hermetic type is carried, no dust pollution in the course of conveying;
Can substitute the lock bucket jar in the pump delivery system of storehouse, the work of the whole powder delivery system of effectively avoiding causing because of problem such as build bridge in the feed bin is interrupted, and improves the reliability of delivery system;
Can carry out powder transformation, course of conveying simultaneously.
Compare with existing gear type pump, the utlity model has following advantage:
Existing gear type pump belongs to a kind of of Hydraulic Pump, and general being fit to carried liquid, can the liquid positive delivery structurally can't be satisfied the requirement of delivery of dry powder, can not realize the positive delivery of dry material.The utility model has carried out improving design from structure, and a kind of gear type transformation dry powder pump rational in infrastructure, easy to use is provided.
The gear type transformation dry powder pump of the utility model has solved in clean coal power generation and the processes such as chemical industry, metallurgy, medicine and food processing in the lock bucket system problems such as transformation storehouse fluctuation of service, is applicable to the powder conveying in the industrial process such as extensive dry coal powder gasification, IGCC generating, machinery, chemical industry, metallurgy, pharmacy and food processing.
Description of drawings
Fig. 1 is the powder delivery system scheme drawing that has gear type transformation dry powder pump.
Fig. 2 is the gear type transformation dry powder pump vertical section structure scheme drawing of the utility model.
Fig. 3 is the gear type transformation dry powder pump cross-sectional structure scheme drawing of the utility model.
Fig. 4 is the driving wheel toothing scheme drawing of the gear type transformation dry powder pump of the utility model.
Fig. 5 is a powder lock bucket system schematic.
Have among the figure: powder inlet 1, the pump housing 2, driving gear 3, the active gear teeth 31, axle drive shaft 32, gear cavity 4; Front end cover 41, rear side housing 42, boss 43, powder outlet 5, driven gear 6; Driven gear shaft 61 is inhaled powder chamber 7, press-powder chamber 8, normal pressure feed bin 9, gear type transformation dry powder pump 10; High pressure feed hopper 11, active gear teeth extensible member 311, compression spring 312, groove 313, lock bucket jar 12.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
Fig. 1 is the powder delivery system that has gear type transformation dry powder pump, and powder adds powder delivery system from normal pressure feed bin 9 tops, be delivered to high pressure feed hopper 11 through gear type transformation dry powder pump 10 transformations.
Fig. 2 and Fig. 3 are the gear type transformation dry powder pumps of the utility model; The pump housing 2 is provided with from top to bottom bonded assembly powder inlet 1, suction powder chamber 7, gear cavity 4, press-powder chamber 8 and powder outlet 5 successively; The front and back of gear cavity 4 are respectively arranged with front end cover 41 and rear side housing 42, with gear cavity 4 sealings; Be provided with horizontal direction driving gear 3 arranged side by side and intermeshing and driven gear 6 in the gear cavity 4; Driving gear 3 is the number of teeth, modulus, the identical a pair of involute external meshing tooth of profile of tooth with driven gear 6, inhales powder chamber 7 and is separated by the point of engagement of driving gear 3 and driven gear 6 with press-powder chamber 8.The axle center of driving gear 3 has been horizontally disposed with axle drive shaft 32, and the axle center of driven gear 6 has been horizontally disposed with driven gear shaft 61, and the rear and front end of axle drive shaft 32 and driven gear shaft 61 is installed on front end cover 41 and the rear side housing 42 respectively; Be respectively arranged with a boss 43 on gear cavity 4 left and right sides inwalls, the arc radius of boss 43 equates that with the pitch circle radius its arc length equals the half the of pitch circle girth.The active gear teeth 31 on the driving gear 3 have along the structure of gear radial expansion; Initiatively be inlaid with initiatively gear teeth extensible member 311 and high pressure spring 312 in the groove 313 of the gear teeth 31 outboard end; High pressure spring 312 is arranged between active gear teeth extensible member 311 bottoms and the active gear teeth 31 bodies; Initiatively gear teeth extensible member 311 can shrink along the tooth radius direction when the active gear teeth 31 contact with boss 43; Initiatively 311 stretching, extensions of gear teeth extensible member reset when the active gear teeth 31 and boss 43 disengage, and driven gear 6 is identical with the structure of driving gear 3.
When the gear type transformation dry powder pump of the utility model is worked; The low pressure powder gets into through powder inlet 1 inhales powder chamber 7; Rotation with driving gear 3 and driven gear 6 gets into gear cavity 4; When the active gear teeth 31 contacted with boss 43, initiatively gear teeth extensible member 311 can shrink along the tooth radius direction, and form seal cavity between the active gear teeth 31 and the boss 43 this moment.Along with the rotation of intermeshing driving gear 3 and driven gear 6, powder gets into press-powder chamber 8 from inhaling powder chamber 7, arrives high pressure conditions from low-pressure state, after powder outlet 5 gets into high-pressure installation.When the active gear teeth 31 and boss 43 disengaged, initiatively gear teeth extensible member 311 can stretch and reset.Initiatively the course of action of the gear teeth 31 is identical on the course of action of the gear teeth and the driving gear 3 on the driven gear 6.Be equipped with pad between front end cover 41, rear side housing 42 and driving gear 3, driven gear 6 and the boss 21, to guarantee the sealing in the powder transformation course of conveying.
Fig. 4 is the driving wheel toothing scheme drawing of the gear type transformation dry powder pump of the utility model, when driving gear 31 contacts with boss 43, deforms after high pressure spring 312 is stressed, and initiatively gear teeth extensible member 311 shrinks along the tooth radius direction gradually, gets into groove 313.When initiatively the gear teeth 31 disengaged with boss 43, initiatively gear teeth extensible member 311 can stretch and reset.
When intermeshing driving gear 3 rotated according to direction shown in Figure 2 with driven gear 6, the gear of point of mesh upside withdrawed from engagement gradually, and the volume of inhaling powder chamber 7 increases gradually; Form local decompression's cavity; Powder from powder inlet 5 gets into suction powder chamber 7, the space between gear is full of, and along with the rotation of gear is carried downwards; The gear of point of engagement downside progresses into engagement, and powder rotates after be sent to powder outlet 5 behind the press-powder chamber 8 through gear.
Claims (4)
1. gear type transformation dry powder pump; It is characterized in that; The pump housing of this gear type pump (2) is provided with from top to bottom bonded assembly powder inlet (1), suction powder chamber (7), gear cavity (4), press-powder chamber (8) and powder outlet (5) successively; The front and back of said gear cavity (4) are respectively arranged with front end cover (41) and rear side housing (42), and gear cavity (4) is sealed;
Be provided with horizontal direction driving gear arranged side by side and intermeshing (3) and driven gear (6) in the said gear cavity (4); The axle center of said driving gear (3) has been horizontally disposed with axle drive shaft (32); The axle center of said driven gear (6) has been horizontally disposed with driven gear shaft (61), and the rear and front end of said axle drive shaft (32) and driven gear shaft (61) is installed on front end cover (41) and the rear side housing (42) respectively;
Be respectively arranged with a boss (43) on the inwall of said gear cavity (4) left and right sides; The arc radius of boss (43) equates with the pitch circle radius; Its arc length equals the half the of pitch circle girth; The active gear teeth (31) on the described driving gear (3) have along the structure of gear radial expansion; When the active gear teeth (31) and boss (43) when contacting initiatively gear teeth extensible members (311) can shrink along the tooth radius direction, when the active gear teeth (31) and boss (43) when disengaging initiatively gear teeth extensible members (311) stretch and reset, said driven gear (6) is identical with the structure of driving gear (3).
2. gear type transformation dry powder pump according to claim 1; It is characterized in that; The structure along the gear radial expansion of the said active gear teeth (31) is: initiatively be inlaid with initiatively gear teeth extensible members (311) and high pressure spring (312) in the groove (313) of the gear teeth (31) outboard end, said high pressure spring (312) is arranged between active gear teeth extensible members (311) bottom and the active gear teeth (31) body.
3. gear type transformation dry powder pump according to claim 1 is characterized in that, described driving gear (3) and driven gear (6) are the number of teeth, modulus, the identical a pair of involute external meshing tooth of profile of tooth.
4. gear type transformation dry powder pump according to claim 1 is characterized in that, described suction powder chamber (7) and press-powder chamber (8) are separated by the point of engagement of driving gear (3) and driven gear (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201939189U CN202558273U (en) | 2012-05-03 | 2012-05-03 | Gear type variable pressure dry powder pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201939189U CN202558273U (en) | 2012-05-03 | 2012-05-03 | Gear type variable pressure dry powder pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202558273U true CN202558273U (en) | 2012-11-28 |
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ID=47207958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201939189U Expired - Fee Related CN202558273U (en) | 2012-05-03 | 2012-05-03 | Gear type variable pressure dry powder pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202558273U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633123A (en) * | 2012-05-03 | 2012-08-15 | 东南大学 | Gear pump for conveying dry powder in transforming way |
| CN115261077A (en) * | 2021-04-30 | 2022-11-01 | 国家能源投资集团有限责任公司 | Powder feeder and coal gasification equipment |
-
2012
- 2012-05-03 CN CN2012201939189U patent/CN202558273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633123A (en) * | 2012-05-03 | 2012-08-15 | 东南大学 | Gear pump for conveying dry powder in transforming way |
| CN115261077A (en) * | 2021-04-30 | 2022-11-01 | 国家能源投资集团有限责任公司 | Powder feeder and coal gasification equipment |
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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: 20121128 Termination date: 20140503 |