CN102011737B - Mechanical automatic protective centrifugal pump - Google Patents
Mechanical automatic protective centrifugal pump Download PDFInfo
- Publication number
- CN102011737B CN102011737B CN 201010601783 CN201010601783A CN102011737B CN 102011737 B CN102011737 B CN 102011737B CN 201010601783 CN201010601783 CN 201010601783 CN 201010601783 A CN201010601783 A CN 201010601783A CN 102011737 B CN102011737 B CN 102011737B
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- pump shaft
- centrifugal pump
- pump
- stuffing box
- beam barrel
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Abstract
The invention discloses a mechanical automatic protective centrifugal pump, which comprises a bearing box, a pump shell, a pump shaft and an impeller, wherein the pump shaft is in transmission fit with the impeller. The centrifugal pump also comprises an adaptive clutch device and an automatic power cut-off system; the pump shaft is in transmission fit with the impeller through the adaptive clutch device; the adaptive clutch device comprises an inner taper sleeve, an outer taper sleeve, an end face cam sleeve and a pressure spring; and the automatic power cut-off system comprises a revolutionspeed transducer and a processor. The mechanical adaptive clutch device and the automatic power cut-off system can disconnect an output transmission chain of a motor when the outlet of the pump exceeds the predetermined pressure and automatically stop the operation of the motor before over-current of the motor so as to avoid over-current of the motor, protect the motor from being damaged and savethe use and maintenance costs.
Description
Technical field
The present invention relates to a kind of compressor part, particularly a kind of oil-free lubrication reciprocal compressor sealed member.
Background technique
Centrifugal pump is widely used in chemical industry, the energy and life or the industrial field fed sheet of a media such as plumbing because convection cell character and installation precision are less demanding, particularly has the occasion of larger traffic requirement, has irreplaceable effect.
Centrifugal pump is that the effect by centrifugal force throws away liquid, when the impeller quick rotation, blade impels water to rotate very soon, the water that is rotating flies to from impeller under the effect of centrifugal force, after water in the pump was dished out, the core of impeller formed vacuum area, and liquid has been pressed onto in the intake pipe by pipe network under the effect of atmospheric pressure (or hydraulic pressure), form circulation, realize carrying continuously the purpose of liquid.The employing motor driving that centrifugal pump is comparatively general, when the operating parameters of centrifugal pump changes, such as because system problem increases suddenly pump discharge pressure, then motor then the overcurrent phenomenon can occur.In the prior art, motor can arrange Over Current Protection System, and when over current of motor, Over Current Protection System meeting automatic cut-off power makes centrifugal pump out of service, reaches the purpose of protection motor.But existing Over Current Protection System is pure electric induction type, and rate of fault is higher, the situation that often occurs in actual applications that overcurrent does not stop or stop when normally moving, and what impact was produced normally carries out, and perhaps motor is caused damage; And this protective system is in the situation that click the overcurrent starting protection, and concerning motor, the overcurrent of moment has caused the overcurrent infringement of motor, the working life of reducing motor.
Therefore, need a kind of automatic safety device of centrifugal pump, can be in the situation that the comparatively power output of sensitive disconnection motor of pump discharge superpressure; and motor is shut down; avoid motor the situation of overcurrent to occur, the protection motor is not damaged, saves use, maintenance cost.
Summary of the invention
In view of this, the purpose of this invention is to provide mechanical automatic protective centrifugal pump, can be in the situation that the comparatively power output of sensitive disconnection motor of pump discharge superpressure; and motor is shut down; avoid motor the situation of overcurrent to occur, the protection motor is not damaged, saves use, maintenance cost.
Mechanical automatic protective centrifugal pump of the present invention, comprise bearing housing, pump case, pump shaft and impeller, described pump shaft cooperates with the impeller transmission, also comprise self adaption engaging and disengaging gear and auto-power-off system, described pump shaft cooperates with the impeller transmission by the self adaption engaging and disengaging gear, described self adaption engaging and disengaging gear comprises inner conical drogue, external conical sleeve, end cam cover and holddown spring, described external conical sleeve is coated at pump shaft, inner conical drogue and the concentric setting of impeller and with its secure fit, the mode that described inner conical drogue is worked in coordination with the conical surface is coated at external conical sleeve; Described holddown spring be coated at pump shaft and externally the large end of tapered sleeve apply the pretightening force that the inner conical surface of the male cone (strobilus masculinus) that makes external conical sleeve and inner conical drogue fits tightly; The end cam cover is positioned at the little head end of external conical sleeve and is fixedly installed with pump shaft is concentric, and the external conical sleeve microcephaly holds the external conical sleeve end cam that meshes with the end cam transmission of end cam cover is set; The beam barrel that described inner conical drogue is wholely set the hermetically passing bearing housing and cooperates with its coaxial rotation, described pump shaft extend beam barrel and cooperate with the transmission of centrifugal pump motor rotor;
Described auto-power-off system comprises:
Speed probe is for detection of the rotating speed of beam barrel;
Processor be used for to receive the data-signal of speed probe and to the control circuit of the centrifugal pump motor signal of giving an order.
Further, described inner conical drogue microcephaly end forms inside annular protrusion, and end cam cover outer ring circularizes seam, and described annular protrusion embeds annular stopper and is slidingly matched with it;
Further, the surface that is slidingly matched of described annular stopper and annular protrusion arranges the water lubrication sliding bearing;
Further, by the first packing box seal, by the second packing box seal, described the second stuffing box is fixedly installed on beam barrel and cooperates with the pump shaft motive sealing between pump shaft and the beam barrel between described beam barrel and the pump case;
Further, the second stuffing box comprises stuffing box base, stuffing box cylindrical shell and stuffing box gland, and described stuffing box base, stuffing box cylindrical shell and stuffing box gland are connected as a single entity and are fixedly connected on beam barrel;
Further, described holddown spring one end withstands the large end of external conical sleeve, and the other end withstands by screw-thread fit and is spun on back-up ring on the pump shaft;
Further, described pump shaft extends the little head end of external conical sleeve and extended shaft part and end cam cover by screw-thread fit, and the outboard end of pump shaft is fixedly installed the block that prevents that the end cam cover from skidding off;
Further, described speed probe is Hall element, is oppositely arranged magnet steel with Hall element on the described beam barrel.
The invention has the beneficial effects as follows: mechanical automatic protective centrifugal pump of the present invention; adopt Adaptive Mechanical engaging and disengaging gear and auto-power-off system; can when surpassing predetermined pressure, pump discharge disconnect the output Transmitted chains of motor; and before over current of motor, automatically stop motor operation; avoid motor the situation of overcurrent to occur; the protection motor is not damaged, saves use, maintenance cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the external conical sleeve structure schematic diagram;
Fig. 3 is end cam nested structure schematic diagram;
Fig. 4 is Figure 1A place enlarged view.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the external conical sleeve structure schematic diagram, Fig. 3 is end cam nested structure schematic diagram, Fig. 4 is Figure 1A place enlarged view, as shown in the figure: the mechanical automatic protective centrifugal pump of the present embodiment, comprise bearing housing 9, pump case 2, pump shaft 8 and impeller 1, described pump shaft 8 cooperates with impeller 1 transmission, also comprise self adaption engaging and disengaging gear and auto-power-off system, described pump shaft 8 cooperates with impeller 1 transmission by the self adaption engaging and disengaging gear, described self adaption engaging and disengaging gear comprises inner conical drogue 24, external conical sleeve 23, end cam cover 19 and holddown spring 18, described external conical sleeve 23 is coated at pump shaft 8, inner conical drogue 24 and impeller 1 concentric setting and with its secure fit, the present embodiment impeller 1 and inner conical drogue 24 adopt the integral molding structure, easy for installation, in conjunction with firmly, improve reliability; The mode that described inner conical drogue 24 is worked in coordination with the conical surface is coated at external conical sleeve 23, and the inner conical surface tapering of the male cone (strobilus masculinus) of external conical sleeve 23 and inner conical drogue 24 is identical and all have certain roughness, this roughness with its normally transmission be as the criterion; Described holddown spring 18 be coated at pump shaft 8 and externally tapered sleeves 23 large ends apply the pretightening force that the inner conical surface of the male cone (strobilus masculinus) that makes external conical sleeve 23 and inner conical drogue 24 fits tightly; End cam cover 19 be positioned at external conical sleeve 23 little head ends and with pump shaft 8 concentric being fixedly installed, external conical sleeve 23 microcephalies hold the external conical sleeve end cam 23a that arranges with the end cam 19a transmission engagement of end cam cover 19; The beam barrel 10 that described inner conical drogue 24 is wholely set hermetically passing bearing housing 9 and cooperates with its coaxial rotation, as shown in the figure, beam barrel 10 is supported in bearing housing 9 by bearing 5 and bearing 11, guarantees the stable and firm of structure, thereby guarantees the normal operation of pump; Bearing housing 9 two ends (such as end cap 12 places) are sealed and matched respectively at beam barrel, can adopt such as conventional movable sealing structures such as oil sealings; Described pump shaft 8 extends beam barrel 10 and cooperates with the transmission of centrifugal pump motor rotor;
Described auto-power-off system comprises:
The present invention is in operation process, pump shaft 8 overlaps 19 with transmission of power to end cam, end cam cover 19 by its end cam 19a with transmission of power to external conical sleeve end cam 23a and be passed to external conical sleeve 23, because external conical sleeve 23 fits tightly inner conical drogue 24 under the effect of holddown spring 18, then transmission of power is to impeller 1 rear output; When impeller 1 delivery outlet superpressure; resistance increases; the resistance back transfer is to external conical sleeve 23; under the effect of end cam 19a; external conical sleeve 23 axial compression holddown springs 18; during impacting force that the axial thrust load that produces as the external tapered sleeve end cam of resistance 23a is set greater than holddown spring 18; holddown spring 18 is compressed; inner conical drogue 24 and external conical sleeve 23 break away from, and then Transmitted chains disconnects, and inner conical drogue 24 and impeller stop operating; beam barrel 10 stops synchronously; speed probe 6 is passed to processor 25 after collecting signal, and processor 25 signal of giving an order stops operating motor, reaches the protection effect.
In the present embodiment, described inner conical drogue 24 microcephaly ends form inside annular protrusion 24a, and end cam overlaps 19 outer rings and circularizes seam 19b, and described annular protrusion 24a embeds annular stopper 19b and is slidingly matched with it; Be used for the axial displacement of constraint inner conical drogue 24, make the centrifugal pump mounting structure firmly compact.
In the present embodiment, the surface that described annular stopper 19b and annular protrusion 24a are slidingly matched arranges water lubrication sliding bearing 22; Reduce the coefficient of sliding friction between annular stopper 19b and the annular protrusion 24a, reduce energy consumption.
In the present embodiment, by 3 sealings of the first stuffing box, as shown in the figure, the first stuffing box gland 4 is fixed in pump case 2, and filler is pressed in the first stuffing box 3, reaches preferably sealing effect between described beam barrel 10 and the pump case 2; By 13 sealings of the second stuffing box, described the second stuffing box 13 is fixedly installed on beam barrel 10 and cooperates with pump shaft 8 motive sealings between pump shaft 8 and the beam barrel 10; In conjunction with necessary static seal point, can guarantee the overall sealing performance of pump.
In the present embodiment, the second stuffing box 10 comprises stuffing box base 16, stuffing box cylindrical shell 15 and stuffing box gland 14, described stuffing box base 16, stuffing box cylindrical shell 15 and stuffing box gland 16 are connected as a single entity and are fixedly connected on beam barrel 10, as shown in the figure, stuffing box base 16, stuffing box cylindrical shell 15 and stuffing box gland 16 are bolted and are integrated; The second stuffing box adopts independently stuffing box structure, is convenient to installation and removal, and can guarantees sealability and processibility.
In the present embodiment, described holddown spring 18 1 ends withstand external conical sleeve 23 and hold greatly, and the other end withstands by screw-thread fit and is spun on back-up ring 17 on the pump shaft 8; By adjusting the axial position of back-up ring 17, can adjust the impacting force of holddown spring 18, thereby change the maximum output of pump.
In the present embodiment, described pump shaft 8 extends external conical sleeve 23 little head ends and extended shaft part and end cam cover 19 and passes through screw-thread fit, the outboard end of pump shaft 8 is fixedly installed and prevents end cam cover 19 blocks that skid off 21, and pump shaft 8 outboard end refer to that it extends the end of external conical sleeve 23 little head ends; As shown in the figure, block 21 is fixing by screw 20; This structure installing/dismounting is simply easy, improves the working efficiency of installing and keeping in repair.
In the present embodiment, described speed probe 6 is Hall element, is oppositely arranged magnet steel 7 with Hall element on the described beam barrel 10; Simple in structure, cost is low.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. mechanical automatic protective centrifugal pump, comprise bearing housing, pump case, pump shaft and impeller, described pump shaft cooperates with the impeller transmission, it is characterized in that: also comprise self adaption engaging and disengaging gear and auto-power-off system, described pump shaft cooperates with the impeller transmission by the self adaption engaging and disengaging gear, described self adaption engaging and disengaging gear comprises inner conical drogue, external conical sleeve, end cam cover and holddown spring, described external conical sleeve is coated at pump shaft, inner conical drogue and the concentric setting of impeller and with its secure fit, the mode that described inner conical drogue is worked in coordination with the conical surface is coated at external conical sleeve; Described holddown spring be coated at pump shaft and externally the large end of tapered sleeve apply the pretightening force that the inner conical surface of the male cone (strobilus masculinus) that makes external conical sleeve and inner conical drogue fits tightly; The end cam cover is positioned at the little head end of external conical sleeve and is fixedly installed with pump shaft is concentric, and the external conical sleeve microcephaly holds the external conical sleeve end cam that meshes with the end cam transmission of end cam cover is set; The beam barrel that described inner conical drogue is wholely set the hermetically passing bearing housing and cooperates with its coaxial rotation, described pump shaft extend beam barrel and cooperate with the transmission of centrifugal pump motor rotor;
Described auto-power-off system comprises:
Speed probe is for detection of the rotating speed of beam barrel;
Processor be used for to receive the data-signal of speed probe and to the control circuit of the centrifugal pump motor signal of giving an order.
2. mechanical automatic protective centrifugal pump according to claim 1, it is characterized in that: described inner conical drogue microcephaly end forms inside annular protrusion, and end cam cover outer ring circularizes seam, and described annular protrusion embeds annular stopper and is slidingly matched with it.
3. mechanical automatic protective centrifugal pump according to claim 2, it is characterized in that: the surface that described annular stopper and annular protrusion are slidingly matched arranges the water lubrication sliding bearing.
4. mechanical automatic protective centrifugal pump according to claim 3; it is characterized in that: pass through the first packing box seal between described beam barrel and the pump case; by the second packing box seal, described the second stuffing box is fixedly installed on beam barrel and cooperates with the pump shaft motive sealing between pump shaft and the beam barrel.
5. mechanical automatic protective centrifugal pump according to claim 4; it is characterized in that: the second stuffing box comprises stuffing box base, stuffing box cylindrical shell and stuffing box gland, and described stuffing box base, stuffing box cylindrical shell and stuffing box gland are connected as a single entity and are fixedly connected on beam barrel.
6. mechanical automatic protective centrifugal pump according to claim 5, it is characterized in that: described holddown spring one end withstands the large end of external conical sleeve, and the other end withstands by screw-thread fit and is spun on back-up ring on the pump shaft.
7. mechanical automatic protective centrifugal pump according to claim 6; it is characterized in that: described pump shaft extends the little head end of external conical sleeve and extended shaft part and end cam cover by screw-thread fit, and the outboard end of pump shaft is fixedly installed the block that prevents that the end cam cover from skidding off.
8. mechanical automatic protective centrifugal pump according to claim 7, it is characterized in that: described speed probe is Hall element, is oppositely arranged magnet steel with Hall element on the described beam barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010601783 CN102011737B (en) | 2010-12-22 | 2010-12-22 | Mechanical automatic protective centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010601783 CN102011737B (en) | 2010-12-22 | 2010-12-22 | Mechanical automatic protective centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102011737A CN102011737A (en) | 2011-04-13 |
| CN102011737B true CN102011737B (en) | 2013-09-18 |
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ID=43842029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010601783 Expired - Fee Related CN102011737B (en) | 2010-12-22 | 2010-12-22 | Mechanical automatic protective centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102011737B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295358A (en) * | 2014-10-20 | 2015-01-21 | 广西玉柴机器股份有限公司 | Water pump of engine |
| CN108553699B (en) * | 2018-01-02 | 2020-12-08 | 潍坊医学院附属医院 | Vacuum cupping device with pressure control capability |
| CN110450265A (en) * | 2019-08-08 | 2019-11-15 | 浙江科技学院 | A kind of centrifugal fiber high-performance Reactive Powder Concrete preparation facilities and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1026405A2 (en) * | 1999-02-03 | 2000-08-09 | Itt Manufacturing Enterprises, Inc. | Attaching means |
| WO2003083312A1 (en) * | 2002-04-03 | 2003-10-09 | Hydor Srl | Centrifugal pump with reverse rotation protection integrated on the impeller blade |
| CN2646431Y (en) * | 2003-05-13 | 2004-10-06 | 于海荣 | Protective device for shaft seal of multistage centrifugal pump |
| CN201433904Y (en) * | 2009-03-16 | 2010-03-31 | 广东凌霄泵业股份有限公司 | Vertical punching multilevel centrifugal pump adopting conical surface structure for fixing impeller |
-
2010
- 2010-12-22 CN CN 201010601783 patent/CN102011737B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1026405A2 (en) * | 1999-02-03 | 2000-08-09 | Itt Manufacturing Enterprises, Inc. | Attaching means |
| WO2003083312A1 (en) * | 2002-04-03 | 2003-10-09 | Hydor Srl | Centrifugal pump with reverse rotation protection integrated on the impeller blade |
| CN2646431Y (en) * | 2003-05-13 | 2004-10-06 | 于海荣 | Protective device for shaft seal of multistage centrifugal pump |
| CN201433904Y (en) * | 2009-03-16 | 2010-03-31 | 广东凌霄泵业股份有限公司 | Vertical punching multilevel centrifugal pump adopting conical surface structure for fixing impeller |
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| Publication number | Publication date |
|---|---|
| CN102011737A (en) | 2011-04-13 |
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Granted publication date: 20130918 Termination date: 20151222 |
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