CN206495814U - Fluid pump pump shaft seal structure - Google Patents
Fluid pump pump shaft seal structure Download PDFInfo
- Publication number
- CN206495814U CN206495814U CN201620664822.4U CN201620664822U CN206495814U CN 206495814 U CN206495814 U CN 206495814U CN 201620664822 U CN201620664822 U CN 201620664822U CN 206495814 U CN206495814 U CN 206495814U
- Authority
- CN
- China
- Prior art keywords
- pump
- pump shaft
- seal
- impeller
- snap ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of fluid pump pump shaft seal structure, it includes pump shaft, the impeller on pump shaft, the pump cover installed in impeller periphery, the mechanical seal structure installed in impeller two ends and the bearing body for supporting pump shaft on the outside of mechanical seal structure；It is characterized in that the mechanical seal structure includes the seal snap ring positioned at impeller two ends, the outer end of the seal snap ring is provided with mechanical sealing member.The utility model can make up elimination wearing clearance in time using snap ring and sound ring structure.And without being threaded structure on snap ring and pump shaft, it is simple and convenient during installation.
Description
Technical field
The utility model is related to pump field, refers in particular to the sealing structure for fluid pump.
Background technology
In water pump or other pump class formations, it usually needs the structure being mounted on an axle is carried out by sealing structure close
Envelope.Mechanical seal structure is typically taken at the impeller two ends of fluid pump.General fluid pump structure is provided with impeller on pump shaft,
Impeller two ends are separately installed with mechanical seal structure, and bearing body is separately installed with mechanical seal structure two ends, in impeller periphery
Pump cover is installed.The mechanical seal structure used at impeller two ends is typically sealed using nut structure.Positioned at impeller two
Screw thread is opened up on the pump shaft at end, it is further fixed real by fixing device progress in screw lock top nut thereon, then at nut two ends
Existing mechanical seal.Using nut seal structure, it is necessary to open up screw thread in cutting ferrule and nut, while needing to open up correspondence on pump shaft
Screw thread.Although sealing effectiveness is relatively good, have the shortcomings that certain：Due to nut cutting ferrule and the non-helicitic texture of pump shaft,
When pump shaft is rotated, over time, nut cutting ferrule can be caused to be made a concession when rotated along spiral, be produced between nut cutting ferrule and impeller
Raw gap, causes to run jiggly bad phenomenon；Need to carry out screw thread process simultaneously, make processing and assemble all than relatively time-consuming.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of fluid pump between centers sealing structure, nut can be avoided close
The bad phenomenon that the rotation of seal structure is made a concession, improves sealing effectiveness.
In order to solve the above technical problems, the technical scheme that the utility model is provided is a kind of fluid pump pump shaft seal structure,
It includes pump shaft, the impeller on pump shaft, the pump cover installed in impeller periphery, the mechanical seal structure installed in impeller two ends
And the bearing body for supporting pump shaft on the outside of mechanical seal structure；It is characterized in that the mechanical seal structure includes
Seal snap ring positioned at impeller two ends, mechanical sealing member is provided with the outer end of the seal snap ring.
Be provided with the two ends pump shaft of the impeller on cutting ferrule, the hollow wall of described seal snap ring one end be provided with to
The abutting step of the tight cutting ferrule.
The mechanical sealing member includes dynamic and static ring construction machine seal and the machinery on the outside of the sound ring structure
Sealing fixture；The mechanical seal fixture is connected with the pump cover and the pump housing；The sound ring structure pushes against described
Seal snap ring outer end.The sound ring structure includes the static-ring structure being arranged on the pump shaft and by spring and the stationary ring
The movable ring structure of structure connection, the movable ring structure pushes against the seal snap ring.
Fluid pump between centers sealing structure of the present utility model, impeller is implemented in combination with using seal snap ring and dynamic and static ring sealing part
The between centers sealing device at two ends, when the end contact between seal snap ring, cutting ferrule, impeller produces abrasion, is driven by spring
Rotating ring pushes against seal snap ring, gap of the compensation contact end face caused by abrasion.It is simple in construction using seal snap ring, when mounted
Directly set is only needed between centers, makes, install all very convenient, shorten built-up time, improve assembling quality.
Brief description of the drawings
Fig. 1, the utility model structural representation.
Local A enlarged drawings schematic diagram in Fig. 2, Fig. 1.
Fig. 3, snap ring axial direction schematic cross-sectional view.
Fig. 4, snap ring transversary schematic diagram.
Embodiment
For above-mentioned technical proposal, now lift a preferred embodiment and be specifically described with reference to diagram.It is of the present utility model
Fluid pump between centers sealing structure, it mainly includes, the pump housing, pump shaft, impeller, between centers sealing structure, pump cover, bearing body, referring to Fig. 1
To Fig. 4, wherein.
The pump housing 1, with hollow accommodating cavity, is being provided with pump shaft 2, and impeller 3, impeller position are provided with pump shaft 2
In hollow accommodating cavity.Pump cover 4 is provided with above impeller.Between centers sealing structure is respectively arranged with the two ends of impeller.Between centers
Sealing structure includes cutting ferrule, snap ring, dynamic and static ring sealing structure and sealing fixture.The annular cylinder on the pump shaft of impeller one end
The cutting ferrule 5 of shape pushes against impeller one end.Side is provided with snap ring 6 outside cutting ferrule, and snap ring is the cylindrical-shaped structure of ring-type, in snap ring
Wall is provided with the keyway being connected with pump shaft, and abutting step 61 is provided with the hollow wall of the snap ring one end contacted with cutting ferrule,
Cutting ferrule one end is goed deep into the hollow wall of snap ring one end, and pushes against step to cutting ferrule and impeller positioning.In the outer end of snap ring
Side is provided with dynamic and static ring sealing structure 7.Dynamic and static ring sealing structure includes being arranged on the movable ring structure 71 of the outer side of snap ring and set
The movable ring structure of static-ring structure 72. on the outside of movable ring structure and quiet change between structure are connected by spring 73, movable ring structure with
Lead is provided between static-ring structure.Snap ring is connected by screw with rotating ring.In normal operating conditions, spring is in compression
State.Sealing fixture 8 is provided with the outside of dynamic and static ring sealing structure.Sealing fixture is located on pump shaft and pump cover and pump
Body is connected.Sealing fixture pushes against dynamic and static ring sealing structure and carries out axial restraint to dynamic and static ring sealing structure.In sealing fixture
Outside be provided with bearing body 9, be provided with bearing on bearing body 9, one end of pump shaft is provided with bearing body to be carried out to pump shaft
Supporting.Bearing body is bolted in sealing fixture.
The operation principle of between centers sealing structure of the present utility model is when in normal operating conditions, at dynamic and static ring spring
In compressive state, therefore movable ring structure pushes against snap ring and carries out between centers to impeller and fixes and seal always.When by working long hours
Afterwards, when the impeller of between centers, cutting ferrule, snap ring, movable ring structure contact with each other face produced after working long hours end wear produce
During gap, spring compresses movable ring structure and moved to impeller direction under spring force, makes up the gap that abrasion is produced, and eliminates axle
Between contact gap between each part, realize the even running between each part.The utility model is using snap ring and dynamic and static ring knot
Structure, elimination wearing clearance can be made up in time.And, it is simple and convenient during installation without being threaded structure on snap ring and pump shaft.
Claims (4)
1. a kind of fluid pump pump shaft seal structure, it includes the pump housing, the pump shaft being arranged on the pump housing, the leaf on pump shaft
Wheel, the pump cover installed in impeller periphery, the mechanical seal structure installed in impeller two ends and on the outside of the mechanical seal structure
The bearing body for supporting pump shaft；It is characterized in that the mechanical seal structure includes the seal snap ring positioned at impeller two ends,
The outer end of the seal snap ring is provided with mechanical sealing member.
2. fluid pump pump shaft seal structure according to claim 1, it is characterised in that on the two ends pump shaft of the impeller
It is provided with cutting ferrule, the hollow wall of described seal snap ring one end and is provided with the abutting step for pushing against the cutting ferrule.
3. fluid pump pump shaft seal structure according to claim 1, it is characterised in that the mechanical sealing member includes sound
Ring structure mechanical sealing member and the mechanical seal fixture on the outside of the sound ring structure；The mechanical seal fixture with
The pump cover and pump housing connection；The sound ring structure pushes against the seal snap ring outer end.
4. fluid pump pump shaft seal structure according to claim 3, it is characterised in that the sound ring structure includes setting
Static-ring structure on the pump shaft and the movable ring structure being connected by spring with the static-ring structure, the movable ring structure are pushed against
The seal snap ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620664822.4U CN206495814U (en) | 2016-06-30 | 2016-06-30 | Fluid pump pump shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620664822.4U CN206495814U (en) | 2016-06-30 | 2016-06-30 | Fluid pump pump shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206495814U true CN206495814U (en) | 2017-09-15 |
Family
ID=59799668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620664822.4U Active CN206495814U (en) | 2016-06-30 | 2016-06-30 | Fluid pump pump shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206495814U (en) |
-
2016
- 2016-06-30 CN CN201620664822.4U patent/CN206495814U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104061317B (en) | Gear reduction unit high speed shaft non-contacting seal device | |
| CN107420346B (en) | Anti-lock self-lubricating easy-maintenance centrifugal pump | |
| CN107605844B (en) | Rotary hydraulic cylinder | |
| CN203784244U (en) | Top driving device sealing structure | |
| CN106051162A (en) | Shaft lever floating sealing device and application method | |
| CN103775486B (en) | A kind of axial-radial shock-decreasing type rotary joint | |
| CN206495814U (en) | Fluid pump pump shaft seal structure | |
| CN207245650U (en) | High-pressure mechanical seal oil-well rig floating punch pipe assembly | |
| CN201896948U (en) | Rotary joint of rotor assembly outer pipe structure | |
| CN203500482U (en) | External ultra-thin labyrinth seal with positioning device | |
| CN105782450A (en) | Water sealing structure of raise boring machine | |
| CN214577737U (en) | Novel sectional assembly type shaft tubular pump device | |
| CN101463902A (en) | Mechanical seal stationary ring and rotating ring, and double-end mechanical seal composed of the same | |
| CN205824181U (en) | Axostylus axostyle floating seal device | |
| CN108105388B (en) | Improved sealing structure for hydraulic motor | |
| CN201396434Y (en) | Novel non-abrasion shaft oil seal | |
| CN2849344Y (en) | Mounting structure of rotation shaft mechanical seal | |
| CN216407729U (en) | Sealing mechanism for crusher | |
| CN201916632U (en) | Oil collection ring with seepage prevention function | |
| CN110966150A (en) | Oil slip ring of wind driven generator set | |
| CN210531582U (en) | Gap-adjustable spindle structure | |
| CN219733711U (en) | Wearing ring, coaxial self-adaptive structure and water pump | |
| CN211859788U (en) | Installation connection structure of motor on machine tool | |
| CN204677489U (en) | Mechanical seal device | |
| CN201925137U (en) | Screw pump direct-driving device used in eccentric well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |