CN206942991U - A kind of case-hardened screw pump connecting shaft - Google Patents
A kind of case-hardened screw pump connecting shaft Download PDFInfo
- Publication number
- CN206942991U CN206942991U CN201720858007.6U CN201720858007U CN206942991U CN 206942991 U CN206942991 U CN 206942991U CN 201720858007 U CN201720858007 U CN 201720858007U CN 206942991 U CN206942991 U CN 206942991U
- Authority
- CN
- China
- Prior art keywords
- matrix
- spray
- connecting shaft
- screw pump
- case
- 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
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Coating By Spraying Or Casting (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of case-hardened screw pump connecting shaft, it belongs to screw pump mechanical equipment technical field, matrix including shaft-like, described matrix outer surface is provided with some grooves, described matrix surface is provided with spray-welding coating, mutual soluble layer is provided between the spray-welding coating and matrix, because spray-welding coating is the coating for the similar welded type for forming solid solubility metal dust in matrix surface after overweight melt, because there is the presence of mutual soluble layer with matrix, so the binding ability of spray-welding coating and matrix than more prominent, should not come off.
Description
Technical field
It the utility model is related to screw pump mechanical equipment technical field, and in particular to a kind of case-hardened screw pump connection
Axle.
Background technology
Screw pump is volume type rotor pump, be change by the volume of annular seal space formed by screw and bushing suck with
Discharge liquid.The characteristics of screw pump is flow trim, pressure fluctuation is small, have low suction capacity, noise, efficiency high, long lifespan,
Reliable operation；, can transfer of highly viscous and the advantages of its protrusion does not form vortex, to the sticky insensitive of medium when being pumped (conveying) medium
Medium, so becoming increasingly prevalent its application.
But screw rod processing is more difficult, and pump has two kinds of structures of single-suction and double-suction type, but single-screw (single screw) pump only has single-suction, due to
Single-screw (single screw) pump rotor is to do eccentric motion at work, and connecting shaft and packing seal are very with rotor in single-screw (single screw) pump
Easily it is worn, causes service life shorter, the reduction of work quality can be caused without changing, and changes new parts meeting
Cause to waste, be unfavorable for long-term work；Present screw pump connecting shaft is connecting frequently with the form of plating metal elemental chromium
One layer of electrodeposited coating is set on axle, but the release of H element is had during chromium plating, easily produces segmentation crack, and electrodeposited coating during use
Often too thin hardness is inadequate, and thicker chromium coating is harder, and shrinkage is bigger, and segmentation crack is bigger, easily comes off during use.
The content of the invention
For the problems of in the prior art, a kind of case-hardened screw pump connection provided by the utility model
Axle, it is possible to achieve spray-welding coating is set on connecting shaft surface, improves connecting shaft case hardness, shock resistance and decay resistance, increase
Connecting shaft service life, reduce maintenance times.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of case-hardened screw pump connecting shaft, including the matrix of shaft-like, described matrix outer surface is provided with some grooves,
Described matrix surface is provided with spray-welding coating, and mutual soluble layer is provided between the spray-welding coating and matrix, because spray-welding coating is by solid solubility gold
Belong to the coating for the similar welded type that powder is formed after overweight melt in matrix surface, because there is the presence of mutual soluble layer with matrix, institute
With the binding ability of spray-welding coating and matrix than more prominent, should not come off.
Preferably, described matrix uses nickel chromium stainless steel material.
Preferably, decorative pattern is uniformly provided with the groove, increases adhesive force.
Preferably, the spray-welding coating thickness can compensate reparation in 0.05-0.5mm to the mismachining tolerance of connecting shaft.
Preferably, the spray-welding coating surface roughness is Ra0.4-0.1 μm, and the surfacing layer surface is in mirror through grinding
Planar.
The beneficial effects of the utility model are shown：On connecting shaft surface, spray-welding coating is set, improve connecting shaft case hardness,
Shock resistance and decay resistance, increase connecting shaft service life, reduce maintenance times, heat treatment and electrodeposited chromium with respect to before
Hardness and impact resistance afterwards is significantly improved, more wear-resisting and anticorrosive, by setting groove to add combination on matrix
Ability, and the adhesive force of spray-welding coating is added by mutual soluble layer, it is difficult for drop-off and useless compared to plating caused by electroplating technology
Water, spray welding process pollution on the environment are small.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of case-hardened screw pump connecting shaft of the utility model；
Fig. 2 is structural representation after a kind of spray-welding coating of case-hardened screw pump connecting shaft of the utility model amplifies.
In figure：1- matrixes, 2- grooves, the mutual soluble layer of 3-, 4- spray-welding coatings.
Embodiment
For the ease of it will be appreciated by those skilled in the art that being further described below in conjunction with the accompanying drawings to the utility model.
A kind of case-hardened screw pump connecting shaft as shown in Figure 1-2, includes the matrix 1 of shaft-like, and described matrix 1 uses
Nickel chromium stainless steel material, can also use the materials such as low medium carbon steel, part-structure steel, and the outer surface of described matrix 1 is provided with some recessed
Groove 2, decorative pattern is uniformly provided with the groove 2, increases adhesive force, the surface of described matrix 1 is provided with spray-welding coating 4, the spray-welding coating 4 and
Mutual soluble layer 3 is provided between matrix 1, because spray-welding coating 4 is to form solid solubility metal dust in matrix surface after overweight melt
The coating of similar welded type, because there is the presence of mutual soluble layer 3 with matrix 1, spray-welding coating 4 is compared with the binding ability of matrix 1
It is prominent, it should not come off, the thickness of spray-welding coating 4 can compensate reparation, institute in 0.05-0.5mm to the mismachining tolerance of connecting shaft
The surface roughness of spray-welding coating 4 is stated as Ra0.4-0.1 μm, the surface of spray-welding coating 4 is in mirror-like through grinding.
Above content is only to structure example of the present utility model and explanation, the technology of affiliated the art
Personnel are made various modifications or supplement to described specific embodiment or substituted using similar mode, without departing from
The structure of utility model surmounts scope defined in the claims, all should belong to the scope of protection of the utility model.
Claims (5)
1. a kind of case-hardened screw pump connecting shaft, it is characterized in that, include the matrix of shaft-like, if described matrix outer surface is provided with
Dry groove, described matrix surface are provided with spray-welding coating, and mutual soluble layer is provided between the spray-welding coating and matrix.
2. a kind of case-hardened screw pump connecting shaft according to claim 1, it is characterized in that, described matrix uses nickel chromium triangle
Stainless steel material.
3. a kind of case-hardened screw pump connecting shaft according to claim 1, it is characterized in that, uniformly set in the groove
There is decorative pattern.
4. a kind of case-hardened screw pump connecting shaft according to claim 1, it is characterized in that, the spray-welding coating thickness exists
0.05-0.5mm。
5. a kind of case-hardened screw pump connecting shaft according to claim 1, it is characterized in that, the surfacing layer surface is thick
Rugosity is Ra0.4-0.1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720858007.6U CN206942991U (en) | 2017-07-15 | 2017-07-15 | A kind of case-hardened screw pump connecting shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720858007.6U CN206942991U (en) | 2017-07-15 | 2017-07-15 | A kind of case-hardened screw pump connecting shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206942991U true CN206942991U (en) | 2018-01-30 |
Family
ID=61368737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720858007.6U Active CN206942991U (en) | 2017-07-15 | 2017-07-15 | A kind of case-hardened screw pump connecting shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206942991U (en) |
-
2017
- 2017-07-15 CN CN201720858007.6U patent/CN206942991U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106837875A (en) | A kind of abrasion-proof slurry pump pump housing | |
| CN206942991U (en) | A kind of case-hardened screw pump connecting shaft | |
| CN203035752U (en) | Joint bearing | |
| CN107971698A (en) | A kind of pump housing manufacturing process | |
| CN206943001U (en) | A kind of flexible connection axle for submersible screw pump | |
| CN202280645U (en) | Novel high-molecular elastic body coating pump | |
| CN206889348U (en) | A kind of abrasion-proof slurry pump pump housing | |
| CN102588321A (en) | Wear-resisting pump body and pump cover | |
| CN210600180U (en) | Floating sealing pair of mineral framework cementing wear-resistant body | |
| CN204646649U (en) | A kind of two screw pump | |
| CN206320067U (en) | A kind of magnetic drive pump pump shaft of composite | |
| CN202520564U (en) | Abrasion-resistant and corrosion-resistant chemical centrifugal pump | |
| CN207673718U (en) | A kind of wear sleeve | |
| CN211715407U (en) | Corrosion-resistant silicon carbide ceramic feeding and discharging powder pump casing | |
| CN206478036U (en) | A kind of high sand content water pump choma with the Ni-based diamondite sprayed coating of nanometer | |
| CN203098395U (en) | Clamping installation type centrifugal pump volute | |
| CN202833188U (en) | Super anti-friction and anticorrosion combination pump | |
| CN201794780U (en) | Concrete conveying pump and discharge opening structure thereof | |
| CN207093578U (en) | A kind of spherical joint bearing inner race of surface with hard coat | |
| CN202182055U (en) | Wear-resisting corrosion-protection polymer based composite pump | |
| CN105201894A (en) | Slurry pump adopting novel abrasion-resistant structure | |
| CN201532143U (en) | Wide flow passage plate type heat exchanger heat exchanging plate | |
| CN205478349U (en) | Wear -resisting anticorrosive sediment stuff pump overflows piece | |
| CN202520616U (en) | Novel wear-resistant fan | |
| CN202756312U (en) | Section type abrasion-resisting multistage pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |