CN204961328U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
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- CN204961328U CN204961328U CN201520688645.9U CN201520688645U CN204961328U CN 204961328 U CN204961328 U CN 204961328U CN 201520688645 U CN201520688645 U CN 201520688645U CN 204961328 U CN204961328 U CN 204961328U
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- liquid level
- control unit
- central control
- level sensor
- centrifugal pump
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- 239000007788 liquid Substances 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims description 29
- 230000006698 induction Effects 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000002687 intercalation Effects 0.000 claims description 5
- 238000009830 intercalation Methods 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a water pump field, the utility model discloses a centrifugal pump, preceding closing cap (1) and back closing cap (2) lock form pump chamber (1 -2), machinery bearing seal (5) is including expansion ring (51), swivel becket (52), fixed loop (53) and fixed loop seat (54), the fixed loop seat can be dismantled with back closing cap rear side and be connected, impeller (10) and pivot (4) key -type connection, the expansion ring front end is fixed with the impeller buckle, the expansion ring rear end is fixed with the swivel becket buckle, swivel becket and fixed loop sliding seal, the fixed loop is fixed with fixed loop seat buckle, the expansion ring is passed in proper order in the pivot, the swivel becket, fixed loop and fixed loop seat are connected fixedly with motor shaft (31), temperature sensor (6) are inlayed and are inserted in the fixed loop, and level sensor (7) are used for detecting the liquid level in the pump chamber. This centrifugal pump can measure and control the frictional heat of dynamic seal face, avoids mechanical bearing seal and damages mechanical bearing seal because the frictional heat of dynamic seal face is too high to the operational situation of detectable motor.
Description
Technical field
The utility model relates to water pump field, particularly a kind of centrifugal pump.
Background technique
Current centrifugal pump generally adopts contact-type liquid lubrication mechanical shaft seal, and the fundamental composition element of mechanical shaft seal is swivel becket and retaining ring, and swivel becket is the dynamic sealing surface vertical with rotating shaft with the surface of contact of retaining ring.Swivel becket is a part for front gland seal assembly, and fixing ring seat and retaining ring form rear shaft seal, and they form the complete seal device of centrifugal pump jointly.In the centrifugal pump of contact seal, along with rotating shaft starts to rotate, the very thin liquid film of one deck can be formed at above-mentioned dynamic sealing surface place, and be attended by frictional heat generation.The heat that dynamic sealing surface place produces must remove, and avoids being transferred liquid flashes or carbonization.If frictional heat can not remove, also can cause damage to mechanical shaft seal, and then cause the damage of centrifugal pump.
In the centrifugal pump used at present, the frictional heat that dynamic Contact face produces does not have way and measures.Therefore, if centrifugal pump is damaged, can not learn that the end makes mechanical shaft seal damage because frictional heat is too high or in pump, liquid level is low or causes due to other reason at once, more can not stop or opening running by intelligent control centrifugal pump, and find the reason damaged and will spend a large amount of time.
Model utility content
Model utility object: for problems of the prior art, the utility model provides a kind of centrifugal pump, can measure and reduce the frictional heat on dynamic sealing surface, avoid mechanical shaft seal in centrifugal pump due to the frictional heat of dynamic sealing surface too high and damage.
Technological scheme: the utility model provides a kind of centrifugal pump, comprise front capping, rear seal-cover, motor, impeller, rotating shaft, mechanical shaft seal, temperature transducer and liquid level sensor, described front capping and described rear seal-cover fasten and form pump chamber, described mechanical shaft seal comprises expansion ring, swivel becket, retaining ring and fixing ring seat, described expansion ring is positioned at described pump chamber, the rear openings of described fixing ring seat and described rear seal-cover removably connects, described swivel becket and described retaining ring are positioned at described fixing ring seat, rear end and the described swivel becket buckle of described expansion ring are fixed, the rear side of described swivel becket and the front side slipper seal of described retaining ring, described retaining ring and described fixing ring seat buckle are fixed, described impeller is positioned at described pump chamber, and the front end buckle of described impeller and described expansion ring is fixed, the front end of described rotating shaft is connected with described impeller key, the rear end of described rotating shaft is successively through described expansion ring, described swivel becket, described retaining ring is fixedly connected with the motor drive shaft of described motor with after described fixing ring seat, the induction end intercalation of described temperature transducer is in described retaining ring, and described liquid level sensor is for detecting the liquid level in described pump chamber.
Further, the induction end of described temperature transducer is inner at described retaining ring through intercalation after the sidewall of described fixing ring seat, and the handheld terminal of described temperature transducer is positioned at the outside of described fixing ring seat.The handheld terminal of temperature transducer is exposed and makes it possible to manually take out replacing at any time.
Further, described liquid level sensor is contact-type liquid level sensor, contactless liquid level sensor or proximity detector; Described temperature transducer is thermocouple type, platinum resistor type or thermoelectricity resistance type temperature transducer.
Preferably, described liquid level sensor is the liquid level sensor that liquid level data can be converted to electrical signal; Described temperature transducer is the temperature transducer that temperature data can be converted to electrical signal.Electrical signal can be converted to and just can realize long-distance monitor and control.
Further, described centrifugal pump also comprises central control unit, and described central control unit is all connected by signal cable line signal with described temperature transducer and described liquid level sensor, and described central control unit is electrically connected with described motor; Described temperature transducer is transferred to described central control unit after converting the temperature data of the described sliding sealing surface measured to electrical signal, described liquid level sensor is transferred to described central control unit after converting the liquid level data in the described pump chamber measured to electrical signal, and described Electric signal processing becomes control signal to control described motor by described central control unit.In the utility model, central control unit can the electrical signal that sent by temperature transducer and liquid level sensor of long-range reception, and then the preset data that prestores of the data of to carry electrical signal and its inside is compared and is processed, and then converts the electrical signal to according to processing result the unlatching or out of service that control signal controls motor.
Further, if described temperature data is greater than the preset temperature preset in described central control unit, and/or described liquid level data is less than in described central control unit the default liquid level preset, then motor No starting and/or operation described in described central controller controls; If described temperature data is less than described preset temperature and described liquid level data is more than or equal to described default liquid level, then described in described central controller controls, motor normally starts and/or runs.Namely temperature and any one factor of liquid level do not satisfy condition, and central control unit all can control motor to be forbidden or out of service, just control motor operation when only having two factors to meet the condition preset simultaneously; Central control unit set up the frictional heat that the utility model can be made under the prerequisite of not taking centrifugal pump apart can not only to judge sliding sealing surface, motor can also be automatically controlled out of service when the frictional heat of sliding sealing surface is higher, automatically control motor to restart to run when the frictional heat of sliding sealing surface is lower, effectively avoid slipper seal surface temperature too high and damage mechanical bearing, also can realize unmanned telecontrol.
Beneficial effect: be provided with temperature transducer and/or liquid level sensor in this centrifugal pump, temperature transducer can measure the temperature in retaining ring, and the sliding sealing surface of retaining ring and swivel becket is dynamic sealing surface, so temperature sensor measurement to temperature indirectly reflect the frictional heat of above-mentioned sliding sealing surface, liquid level sensor can measure the liquid level in pump chamber, the frictional heat of sliding sealing surface at that time just clearly can be known by temperature transducer user, just can judge whether the liquid level in pump chamber at that time can be reduced to preset level by the frictional heat on dynamic sealing surface by liquid level sensor, whether the centrifugal pump of this structure need not take the temperature just can knowing dynamic sealing surface apart normal or too high, just can judge that whether the damage of centrifugal pump is that machine bearing failure that is that cause causes because the frictional heat of sliding sealing surface is too high, greatly save the time of maintenance, save human cost.
Accompanying drawing explanation
Fig. 1 is centrifugal pump external structure schematic diagram;
Fig. 2 is centrifugal pump part-structure explosive view;
Fig. 3 is the sectional view in Fig. 2 after each several part combination;
Fig. 4 is the explosive view of Each part in mechanical shaft seal;
Fig. 5 is the sectional view in Fig. 4 after each several part combination;
Fig. 6 is centrifugal pump internal structure schematic diagram;
Fig. 7 is the heat flow schematic diagram in sliding friction surface.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
Mode of execution 1:
Present embodiments provide for a kind of centrifugal pump, as shown in Fig. 1 ~ Fig. 6, be made up of front capping 1, rear seal-cover 2, impeller 10, motor 3, rotating shaft 4, mechanical shaft seal 5, temperature transducer 6 and liquid level sensor 7, before mechanical shaft seal 5 is made up of expansion ring 51 and swivel becket 52, shaft seal and the rear shaft seal that is made up of retaining ring 53 and fixing ring seat 54 form, the rear end of expansion ring 51 and the front end buckle of swivel becket 52 are fixed, the rear side of swivel becket 52 and the front side slipper seal of retaining ring 53 form sliding sealing surface 52-53, and retaining ring 53 and fixing ring seat 54 buckle are fixed, front capping 1 and rear seal-cover 2 fasten the pump chamber 1-2 of rear formation centrifugal pump, rear seal-cover 2 rear end has opening, fixing ring seat 54 is detachably fixed with the rear openings of rear seal-cover 2, expansion ring 51 is positioned at pump chamber 1-2, swivel becket 52 and retaining ring 53 are positioned at fixing ring seat 54, impeller 10 is fixed with the front end buckle of expansion ring 51, the front end of rotating shaft 4 is connected with impeller 10 key, the rear end of rotating shaft 4 is successively through expansion ring 51, swivel becket 52, retaining ring 53 is fixedly connected with the motor drive shaft 31 of motor 3 with after fixing ring seat 54, the induction end 61 of temperature transducer 6 is inner at retaining ring 53 through intercalation after the sidewall of fixing ring seat 54, it is outside that handheld terminal reaches fixing ring seat 54, liquid level sensor 7 is for detecting the liquid level in pump chamber 1-2, can be fixed on front capping 1 or rear seal-cover 2 sidewall, also any position that can measure liquid level in pump chamber 1-2 such as pump intake or pump discharge place can be fixed on, consider the convenience of rationality and use, in present embodiment, liquid level sensor 7 is fixed on the rear side outer wall of rear seal-cover 2.
After opening motor 3, motor drive shaft 31 drives rotating shaft 4 to rotate, the rotation impeller 10 of rotating shaft 4 is rotated, liquid just pumps into from pump intake by the rotation of impeller 10 to pump from pump discharge, impeller 10 rotates and drives expansion ring 51 to rotate, and then drive swivel becket 52 to rotate, and then swivel becket 52 produces sliding friction with retaining ring 53, sliding sealing surface 52-53 between swivel becket 52 and retaining ring 53 is dynamic sealing surface, the rotation of swivel becket 52 makes above-mentioned sliding sealing surface 52-53 can produce certain frictional heat, temperature transducer 6 can measure the temperature of retaining ring 53 inside, be illustrated in figure 7 the heat flow schematic diagram on sliding friction surface 52-53, because sliding sealing surface 52-53 is the surface of contact between retaining ring 53 and swivel becket 52, when swivel becket 52 rotates, sliding friction surface 52-53 produce frictional heat according to arrow direction to swivel becket 52 and retaining ring 53 internal delivery, so the temperature of retaining ring 53 inside that temperature transducer 6 measures can reflect the frictional heat on sliding sealing surface 52-53 indirectly, liquid level sensor 7 is fixed on outer wall on rear side of rear seal-cover 2, can be measured the liquid level in pump chamber 1-2 by the liquid in induction pump chamber 1-2, generally, if the temperature that temperature transducer 6 measures is lower than preset temperature, and the liquid level that liquid level sensor 7 measures is when being equal to or higher than default liquid level, sliding sealing surface 52-53 generally can not damage because frictional heat is too high, these temperature and the data of liquid level can be connected a display device and show, or clearing lamp or alarm bell can be set up, such as when temperature is within the scope of 80 ~ 100 DEG C, early-warning lamp shines or pre-alarm bell sends early warning sound, after temperature is higher than 100 DEG C, warning light flicker or alarm bell sound the alarm, when temperature lower than 70 DEG C and liquid level higher than default liquid level time, tutorial light extinguishes or alarm bell is not reported to the police, a foundation investigating fault is provided as user, save the time of maintenance.
Said temperature sensor 6 can select thermocouple type, platinum resistor type or thermoelectricity resistance type temperature transducer, and above-mentioned liquid level sensor 7 can select contact-type, contactless liquid level sensor or proximity detector.
Mode of execution 2:
Present embodiment is the further improvement of mode of execution 1, main improvements are, centrifugal pump in mode of execution 1 can only monitor the liquid level in the temperature of sliding sealing surface 52-53 and pump chamber 1-2, to the foundation of user's failure judgement, can not liquid level in the temperature of sliding sealing surface 52-53 in too high or pump chamber 1-2 too low time protect mechanical shaft seal 5 not to be damaged in time, and in present embodiment, motor 3 in centrifugal pump can liquid level in the frictional heat of sliding sealing surface 52-53 in too high or pump chamber 1-2 too low time out of service or No starting, be not damaged to protect mechanical shaft seal 5, long-range unmanned manipulation can also be carried out.
Specifically, central control unit 8 is also comprised in centrifugal pump in present embodiment, this central control unit 8 is connected respectively by temperature signal elastic cable paper 91 and liquid level signal elastic cable paper 92 signal with temperature transducer 6 and liquid level sensor 7, be electrically connected by motor cable line 11 with motor 3, temperature transducer 6 in present embodiment is the temperature transducers that temperature data can be converted to electrical signal, liquid level sensor 7 is the liquid level sensors that liquid level data can be converted to electrical signal, temperature transducer 6 sends to central control unit 8 after the temperature data recorded is converted to electrical signal, liquid level sensor 7 also sends to central control unit 8 after the liquid level data recorded is converted to electrical signal, central control unit 8 converts the electrical signal received to temperature data and liquid level data again, and said temperature data and the preset temperature preset are compared, above-mentioned liquid level data and the default liquid level preset are compared, when the result compared be temperature data be greater than preset temperature and/or liquid level data be less than default liquid level time, the results conversion compared can to become control signal to control the out of service or No starting of motor 3 by central control unit 8, mechanical shaft seal 5 is prevented to be damaged because the frictional heat on sliding sealing surface 52-53 continues to raise, protection centrifugal pump, after motor 3 is too high and out of service because of frictional heat, because temperature transducer 6 and liquid level sensor 7 are Real-Time Monitorings, so when the result detected is that temperature data is less than preset temperature and liquid level data is greater than default liquid level, then the results conversion compared can become control signal to restart operation to control motor 3 again by central control unit 8 again.
So can say that the centrifugal pump in present embodiment has overheat protective function, effectively avoid the temperature due to sliding sealing surface 52-53 too high and mechanical bearing 5 that is that cause damages the generation of event, in the working life of effective this centrifugal pump of prolongation, this centrifugal pump unmanned can be controlled by long-range; Can also by central control unit 8 and computer networking, real time record centrifugal pump working states' data, for malfunction elimination and unmanned provide basic data.
In addition; it is worth mentioning that; the running parameters such as the operating voltage of all right Real-Time Monitoring motor 3 of central control unit 8 in present embodiment and electric current; if there is overtension or too low or overcurrent phenomenon, central control unit 8 also can control motor 3 power-off automatically; it is stoped to continue to run, the trouble free service of available protecting centrifugal pump.
Above-mentioned mode of execution, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the utility model Spirit Essence or modification, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. a centrifugal pump, it is characterized in that, comprise front capping (1), rear seal-cover (2), motor (3), impeller (10), rotating shaft (4), mechanical shaft seal (5), temperature transducer (6) and liquid level sensor (7), described front capping (1) and described rear seal-cover (2) fasten and form pump chamber (1-2), described mechanical shaft seal (5) comprises expansion ring (51), swivel becket (52), retaining ring (53) and fixing ring seat (54), described expansion ring (51) is positioned at described pump chamber (1-2), described fixing ring seat (54) removably connects with the rear openings of described rear seal-cover (2), described swivel becket (52) and described retaining ring (53) are positioned at described fixing ring seat (54), rear end and described swivel becket (52) buckle of described expansion ring (51) are fixed, the rear side of described swivel becket (52) and the front side slipper seal of described retaining ring (53), described retaining ring (53) and described fixing ring seat (54) buckle are fixed, described impeller (10) is positioned at described pump chamber (1-2), and described impeller (10) is fixed with the front end buckle of described expansion ring (51), the front end of described rotating shaft (4) is connected with described impeller (10) key, the rear end of described rotating shaft (4) is successively through described expansion ring (51), described swivel becket (52), described retaining ring (53) is fixedly connected with the motor drive shaft (31) of described motor (3) afterwards with described fixing ring seat (54), induction end (61) intercalation of described temperature transducer (6) is in described retaining ring (53), and described liquid level sensor (7) is for detecting the liquid level in described pump chamber (1-2).
2. centrifugal pump according to claim 1, it is characterized in that, the induction end (61) of described temperature transducer (6) is through intercalation after the sidewall of described fixing ring seat (54) in described retaining ring (53), and the handheld terminal (62) of described temperature transducer (6) is positioned at the outside of described fixing ring seat (54).
3. centrifugal pump according to claim 1, is characterized in that, described liquid level sensor (7) is contact-type liquid level sensor, contactless liquid level sensor or proximity detector; Described temperature transducer (6) is thermocouple, platinum resistor or thermal resistor.
4. centrifugal pump according to any one of claim 1 to 3, is characterized in that, described liquid level sensor (7) is the liquid level sensor that liquid level data can be converted to electrical signal; Described temperature transducer (6) is the temperature transducer that temperature data can be converted to electrical signal.
5. centrifugal pump according to claim 4, it is characterized in that, also comprise central control unit (8), described central control unit (8) is all connected by signal cable line (9) signal with described temperature transducer (6) and described liquid level sensor (7), and described central control unit (8) is electrically connected with described motor (3); Described temperature transducer (6) is transferred to described central control unit (8) after converting the temperature data of the described sliding sealing surface (52-53) measured to electrical signal, described liquid level sensor (7) is transferred to described central control unit (8) after converting the liquid level data in the described pump chamber (1-2) measured to electrical signal, and described Electric signal processing becomes control signal to control described motor (3) by described central control unit (8).
6. centrifugal pump according to claim 5, it is characterized in that, if described temperature data is greater than the preset temperature preset in described central control unit (8), and/or, described liquid level data is less than the default liquid level preset in described central control unit (8), then described central control unit (8) controls described motor (3) No starting and/or operation; If described temperature data is less than described preset temperature and described liquid level data is more than or equal to described default liquid level, then described central control unit (8) controls described motor (3) normally startup and/or operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520688645.9U CN204961328U (en) | 2015-08-31 | 2015-08-31 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520688645.9U CN204961328U (en) | 2015-08-31 | 2015-08-31 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961328U true CN204961328U (en) | 2016-01-13 |
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ID=55056398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520688645.9U Active CN204961328U (en) | 2015-08-31 | 2015-08-31 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185176A (en) * | 2018-10-22 | 2019-01-11 | 广州小乙科技有限公司 | A kind of sustainable water plug of draining based on lift automatic adjustment |
-
2015
- 2015-08-31 CN CN201520688645.9U patent/CN204961328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185176A (en) * | 2018-10-22 | 2019-01-11 | 广州小乙科技有限公司 | A kind of sustainable water plug of draining based on lift automatic adjustment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200519 Address after: 215103 No.20, nanguandu Road, Yuexi street, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU COINKEY INTELLIGENT PUMP INDUSTRY Co.,Ltd. Address before: 9 Xinzheng street, Makou Town, Hanchuan City, Hubei Province Patentee before: Wan Mingxia |