CN207814031U - Centrifugal pump shaft head lobe wheel screw check structure - Google Patents
Centrifugal pump shaft head lobe wheel screw check structure Download PDFInfo
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- CN207814031U CN207814031U CN201721759425.6U CN201721759425U CN207814031U CN 207814031 U CN207814031 U CN 207814031U CN 201721759425 U CN201721759425 U CN 201721759425U CN 207814031 U CN207814031 U CN 207814031U
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- locking
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- resultant force
- pump shaft
- lock
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Abstract
The utility model discloses a kind of centrifugal pump shaft head lobe wheel screw check structures, it includes pump shaft, impeller and lock-screw, it is characterized in that being equipped with resultant force compresses locking plate and locking component, it is in cone that the resultant force, which compresses locking plate and locking component respectively, the locking component is that the locking-blade being equipped with by connection conical ring and connection conical ring miner diameter end circumference array is formed by fixedly connecting, the bigger diameter end of the locking component compresses locking plate miner diameter end with resultant force and is fixedly connected, the resultant force compresses locking disk center and is equipped with locking screw pit, the spiral shell hat side of the lock-screw is equipped with spanner the face of conjunction, after the lock-screw passes through the locking-blade of locking component to be threadedly coupled with resultant force compression locking plate, end is screwed with pump shaft and connect, with structure novel, it is fixed reliable, it is easy for installation, the advantages that preventing it from being inverted in termination of pumping.
Description
Technical field
The utility model is related to water conservancy machinery field of engineering technology, specifically a kind of centrifugal pump shaft head lobe wheel screw is anti-
Loose structure.
Background technology
It is well known that pump is mainly used to convey liquid to include water, oil, acid ＆ alkali liquid, emulsion, suspended emulsion and liquid metal
Deng, also can transport liquid, admixture of gas and the liquid containing suspended solids, effect industrially it is self-evident.From
Impeller is fixed on axis by heart pump by impeller nut, such as ZA series chemical process pumps, IS Series Centrifugals pump etc..With ZA systems
For row chemical flow-process pump, domestic and international nearly all producer is all to prevent impeller nut from loosening by steel-wire screw-socket.Steel wire
Swivel nut price is high, and specialized tool must be used by not only processing impeller nut, and process complexity, and required precision is also quite high.
Currently, there are some producers to be reluctant to inject capital into, any locking device is not increased on impeller nut, this results in impeller nut to pass through
Often there is a phenomenon where loosen.Staff must dismantle the pump housing and repair, and be continuing with after being tightened, and can also be led when serious
The damage of pump is caused, or even is directly scrapped, the service life of pump is substantially reduced.
In order to solve the above-mentioned technical problem, the applicant knows that office has applied for that patent name is on October 29th, 2012 to state
The utility model patent of impeller nut anti-loose structure comprising impeller, pump shaft and impeller nut, impeller are fixed on pump shaft, leaf
Wheel nut is threadedly coupled with pump shaft, and inconsistent with impeller, it is characterised in that is equipped with holding screw, the top of impeller nut is in
Mandrel shows positioning groove to Circle-Array, and the baseplane of positioning groove and the center line of impeller nut are perpendicular, positioning groove
Tapped through hole is vertically equipped on baseplane, impeller offsets contacting surface equipped with threaded hole, tapped through hole and threaded hole with impeller nut
It is corresponding, and center line is on the same axis, the substantive deficiency of this structure is：Centrifugal pump is during shutdown due to used
Property power effect impeller screw can be made to invert, the reversion of impeller screw can make it insufficient to the pretightning force of impeller and impeller is made to loosen,
Even sometimes the reversion of impeller screw can cause it to fall off, and then cause a series of more serious problems, as impeller loosens meeting
Cause pump vibration to become larger, impeller and pump housing friction, accelerates the abrasion etc. of impeller port ring and pump housing choma.
In addition, CN201891651U discloses a kind of utility model patent of Novel impeller nut locking structure comprising
Axis, the impeller being set on axis, impeller nut and stop washer, it is characterised in that：It is leaned on the lateral surface of the impeller nut
It is provided with a groove at impeller, is provided with a groove at impeller nut on the axis hole of impeller, is equipped between impeller nut and impeller
Stop washer, the interior stop foot on stop washer are caught in the groove on impeller nut, and outer stop foot is caught on impeller shaft hole
In groove, the substantive deficiency of this structure is：For the prodigious impeller of weight, the inertia of impeller is very big when due to rotation,
In the case that impeller inverts, stop washer is easy to be cut off, and leads to impeller loose or dislocation.
Invention content
Utility model aims to solve the deficiencies in the prior art, a kind of structure novel, fixed reliable, installation are provided
Centrifugal pump shaft head lobe wheel screw check structure that is convenient, preventing it from being inverted in termination of pumping.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of centrifugal pump shaft head lobe wheel screw check structure, including pump shaft, impeller and lock-screw, it is characterised in that be equipped with
Resultant force compresses locking plate and locking component, and it is in cone, the locking portion that the resultant force, which compresses locking plate and locking component respectively,
Part is that the locking-blade being equipped with by connection conical ring and connection conical ring miner diameter end circumference array is formed by fixedly connecting, the locking component
Bigger diameter end compress locking plate miner diameter end with resultant force and be fixedly connected, the resultant force compresses locking disk center and is equipped with locking screw pit,
The spiral shell hat side face of the lock-screw is equipped with spanner the face of conjunction, and the lock-screw passes through the locking-blade and resultant force of locking component
After compressing locking plate threaded connection, end is screwed with pump shaft and connect, and be preced with end face by the spiral shell of lock-screw compresses with resultant force
Locking plate is inconsistent, so that resultant force is compressed locking plate and impeller is fixed on pump shaft, then, by the locking around locking screw oncomelania hat
Blade all fits to locking screw oncomelania hat outer wall and spanner on conjunction face, when centrifugal pump during shutdown due to inertia force
Effect can make impeller screw invert, resultant force compress locking plate pretightning force is further acted on into impeller, to by impeller firmly
It is fixed on pump shaft, at this point, the clamping force that locking-blade acts on lock-screw also makes lock-screw compress locking plate with resultant force
There are identical steering and rotating speed, to prevent the reversion of the lock-screw in termination of pumping.
The utility model can be fixed with stop pin on pump shaft end face, and the resultant force compresses on the major diameter end face of locking plate
Equipped with anti-rotation pin hole, the resultant force compresses locking plate and is plugged with stop pin through anti-rotation pin hole, so that resultant force compresses locking plate and leads to
The stop pin that is fixed on pump shaft is crossed to limit the rotation of its circumferencial direction, further reaches easy for installation, fixed and reliable makees
With.
Structure novel, fixation is reliable, easy for installation, prevents it from stopping due to using the above structure, having for the utility model
The advantages that being inverted when pump.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the structural schematic diagram of locking component in Fig. 1.
Reference numeral：Lock-screw 1, resultant force compress 2 pump shaft 3 of locking plate, impeller 4, connection conical ring 5, locking-blade 6, pull
Hand handle closes face 7, spiral shell hat 8.
Specific implementation mode
The utility model is illustrated with reference to the accompanying drawings and examples.
As shown in the picture, a kind of centrifugal pump shaft head lobe wheel screw check structure, including pump shaft 3, impeller 4 and lock-screw 1,
It is characterized in that compressing locking plate 2 and locking component equipped with resultant force, it is in circle that the resultant force, which compresses locking plate 2 and locking component respectively,
Taper, the locking component are that the locking-blade 6 being equipped with by connection conical ring 5 and connection 5 miner diameter end circumference array of conical ring fixes company
It connects, bigger diameter end and the resultant force of the locking component compress 2 miner diameter end of locking plate and be fixedly connected, and the resultant force compresses locking plate
2 centers are equipped with locking screw pit, and the spiral shell hat side face of the lock-screw 1 is equipped with spanner face 7 is closed, and the lock-screw 1 passes through
After the locking-blade 6 of locking component is threadedly coupled with resultant force compression locking plate 2, end is screwed with pump shaft 3 and connect, and passes through lock
The spiral shell hat end face of tight screw 1 and resultant force compression locking plate 2 are inconsistent, so that resultant force is compressed locking plate 2 and impeller 4 is fixed on pump shaft 3
On, then, the locking-blade 6 that 1 spiral shell of lock-screw is preced with to surrounding all fits to 1 spiral shells of lock-screw, 8 outer walls of hat and spanners conjunction
On face 6, when centrifugal pump during shutdown due to the effect of inertia force can make impeller screw invert, resultant force compress locking plate into
Pretightning force is acted on impeller by one step, to which impeller to be securely fastened on pump shaft, at this point, locking-blade acts on lock-screw
Clamping force also make lock-screw with resultant force compress locking plate have identical steering and rotating speed, to prevent the locking screw in termination of pumping
The reversion of nail.
The utility model can be fixed with stop pin 5 on 3 end face of pump shaft, and the resultant force compresses the bigger diameter end of locking plate 2
Face is equipped with anti-rotation pin hole, and the resultant force compresses locking plate 2 and plugged through anti-rotation pin hole and stop pin 5, so that resultant force compresses lock
Tight disk 2 limits the rotation of its circumferencial direction by the stop pin 5 being fixed on pump shaft 3, further reaches easy for installation, fixed
Reliable effect.
Stop pin when mounted, is first fixed on pump shaft by the utility model, is then passed through resultant force compression locking plate anti-
It ships and resell on another market and leans against pump shaft and impeller end face, hand-held lock-screw passes through locking part centre to compress locking plate with resultant force and is threadedly coupled
Afterwards, end is screwed with pump shaft connect again, is preced with end face by the spiral shell of lock-screw and resultant force compression locking plate is inconsistent, resultant force
It compresses locking plate to withstand on impeller on pump shaft, after making resultant force compression locking plate that impeller to be fixed on pump shaft, finally by locking screw
Locking-blade around oncomelania hat all fits to locking screw oncomelania hat outer wall and spanner on conjunction face, mistake of the centrifugal pump in shutdown
When impeller screw can be made to invert due to the effect of inertia force in journey, the clamping force that locking-blade acts on lock-screw also makes locking
Screw compresses locking plate with resultant force identical steering and rotating speed, so that resultant force is compressed locking plate and pretightning force is further acted on leaf
Wheel to which impeller to be securely fastened on pump shaft, and then prevents the reversion of the lock-screw in termination of pumping.
Structure novel, fixation is reliable, easy for installation, prevents it from stopping due to using the above structure, having for the utility model
The advantages that being inverted when pump.
Claims (2)
1. a kind of centrifugal pump shaft head lobe wheel screw check structure, including pump shaft, impeller and lock-screw, it is characterised in that be equipped with and close
Tight locking plate and locking component are forced, it is in cone, the locking component that the resultant force, which compresses locking plate and locking component respectively,
It is that the locking-blade being equipped with by connection conical ring and connection conical ring miner diameter end circumference array is formed by fixedly connecting, the locking component
Bigger diameter end compresses locking plate miner diameter end with resultant force and is fixedly connected, and the resultant force compresses locking disk center and is equipped with locking screw pit, institute
The spiral shell hat side face for stating lock-screw is equipped with spanner conjunction face, and the lock-screw passes through the locking-blade of locking component to be pressed with resultant force
After tight locking plate is threadedly coupled, end is screwed with pump shaft and connect, and is preced with end face by the spiral shell of lock-screw and is compressed with resultant force and locks
Tight disk is inconsistent, so that resultant force is compressed locking plate and impeller is fixed on pump shaft, then, by the locking leaf around locking screw oncomelania hat
Piece all fits to locking screw oncomelania hat outer wall and spanner on conjunction face.
2. a kind of centrifugal pump shaft head lobe wheel screw check structure according to claim 1, it is characterised in that the pump shaft end
Stop pin is fixed on face, the major diameter end face that the resultant force compresses locking plate is equipped with anti-rotation pin hole, and the resultant force compresses lock
Tight disk is plugged through anti-rotation pin hole with stop pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721759425.6U CN207814031U (en) | 2017-12-16 | 2017-12-16 | Centrifugal pump shaft head lobe wheel screw check structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721759425.6U CN207814031U (en) | 2017-12-16 | 2017-12-16 | Centrifugal pump shaft head lobe wheel screw check structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814031U true CN207814031U (en) | 2018-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721759425.6U Active CN207814031U (en) | 2017-12-16 | 2017-12-16 | Centrifugal pump shaft head lobe wheel screw check structure |
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| Country | Link |
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| CN (1) | CN207814031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956737A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Low net positive suction head low-pressure fluctuation centrifugal pump |
-
2017
- 2017-12-16 CN CN201721759425.6U patent/CN207814031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956737A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Low net positive suction head low-pressure fluctuation centrifugal pump |
| CN107956737B (en) * | 2017-12-16 | 2024-06-18 | 山东双轮股份有限公司 | Low cavitation allowance low pressure pulsation centrifugal pump |
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