CN210317751U - Wear-resistant screw rod for fillet type vacuum pump - Google Patents
Wear-resistant screw rod for fillet type vacuum pump Download PDFInfo
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- CN210317751U CN210317751U CN201821925535.XU CN201821925535U CN210317751U CN 210317751 U CN210317751 U CN 210317751U CN 201821925535 U CN201821925535 U CN 201821925535U CN 210317751 U CN210317751 U CN 210317751U
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Abstract
A wear-resistant screw for a fillet type vacuum pump comprises a rotor, wherein continuous spiral blades are arranged on the rotor along the axial direction of the rotor, and fillets are continuously arranged between the end surface and the outer edge surface of each spiral blade along the spiral direction; the spiral blades of the rotor, which are contacted with the spiral blades, are provided with pits, and the pits are arranged towards the end surface of the rotor; the overall mass of the screw is reduced through the pits on the helical blades, the air input of the screw is increased, and the efficiency of the screw is improved; the screw is subjected to dynamic balance check through the dynamic balance check hole on the screw, so that the performance of the screw is kept in a precise state, errors are reduced, and the precision of the screw is improved; the wear-resistant rotor screw has the advantages of being novel in structure, easy and convenient to operate and high in accuracy.
Description
The technical field is as follows:
the utility model relates to a fillet type wear-resisting screw rod for vacuum pump.
Background art:
the screw vacuum pump is an air pumping device which utilizes a pair of screws to synchronously rotate in a high speed and reverse direction in a pump shell to generate air suction and exhaust functions, is a renewal product of an oil seal type vacuum pump, can pump out gas occasions containing a large amount of water vapor and a small amount of dust, and is widely applied to the fields of enterprises with higher requirements on clean vacuum, such as domestic pharmacy, chemical industry, semiconductors and the like.
A pair of screws in the vacuum pump is a core component in the vacuum pump, and the structure and the shape of the screws can directly influence the performance of the vacuum pump.
The existing two screws are mostly directly installed in a vacuum pump shell in an intermeshing mode, and because no guide angle is arranged on the end face of the existing screw, the installation difficulty is high, the deviation of the angle is easy to occur, the abrasion speed of the screw is accelerated, and the accuracy of the screw is insufficient, so that the working efficiency of the vacuum pump is reduced.
The utility model has the following contents:
the utility model discloses a remedy prior art not enough, provide a wear-resisting screw rod for fillet type vacuum pump, can reduce the degree of wear of screw rod, keep the precision of screw rod, simple to operate has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a fillet type wear-resisting screw rod for vacuum pump, includes the rotor, is equipped with continuous helical blade on the rotor along rotor axial direction, be equipped with the fillet along the spiral direction in succession between helical blade's terminal surface and the outer fringe face.
And the spiral blades of the rotor, which are contacted with the spiral blades, are provided with pits, and the pits are arranged towards the end surface of the rotor.
The spiral blade is provided with a plurality of dynamic balance checking holes.
The dynamic balance checking holes are uniformly distributed on the outer edge surface of the helical blade in pairs.
The length of the inner diameter of the fillet is in the interval of 0.05mm to 2 mm.
Lantern rings are respectively arranged at the two ends of the rotor.
And the rotor at the outer side of each lantern ring is respectively provided with a wear-resistant sleeve.
The rotor and the spiral blades are coated with a coating.
The coating is made of Hastelloy, nickel or Teflon.
By adopting the structure, the utility model increases the wear resistance of the screw rod through the fillet between the end surface and the outer edge surface of the helical blade, and prolongs the service life of the screw rod; the overall mass of the screw is reduced through the pits on the helical blades, the air input of the screw is increased, and the efficiency of the screw is improved; the screw is subjected to dynamic balance check through the dynamic balance check hole on the screw, so that the performance of the screw is kept in a precise state, errors are reduced, and the precision of the screw is improved; the wear-resistant rotor screw has the advantages of being novel in structure, easy and convenient to operate and high in accuracy.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a perspective view of the present invention.
In the figure, 1, a rotor, 2, a helical blade, 3, a fillet, 4, a pit, 5, a dynamic balance checking hole, 6, a lantern ring, 7, a wear-resistant sleeve, 8, a coating, 9, an outer edge surface, 10 and an end surface.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1 to 3, a wear-resistant screw for a fillet type vacuum pump includes a rotor 1, a continuous spiral blade 2 is provided on the rotor 1 along an axial direction of the rotor 1, and a fillet 3 is provided continuously between an end surface and an outer peripheral surface of the spiral blade 2 along a spiral direction.
The spiral blade 2, which is contacted with the rotor 1 and the spiral blade 2, is provided with a pit 4, and the pit 4 is arranged towards the end surface of the rotor 1.
The helical blade 2 is provided with a plurality of dynamic balance checking holes 5.
The dynamic balance checking holes 5 are uniformly distributed on the outer edge surface of the helical blade 2 in pairs.
The length of the inner diameter of the fillet 3 is in the interval of 0.05mm to 2 mm.
The two ends of the rotor 1 are respectively provided with a lantern ring 6.
And a wear-resistant sleeve 7 is respectively arranged on the rotor 1 outside each lantern ring 6.
The rotor 1 and the helical blades 2 are coated with a coating 8.
The coating 8 is made of Hastelloy, nickel or Teflon.
When the vacuum pump is used, the contact area between the screws can be increased by the fillets 3 which are formed by the contact of the end surfaces 10 and the outer edge surfaces 9 of the two screws in the vacuum pump, the vacuum pump is convenient to install, the offset degree between the screws is reduced, and the abrasion degree of the screws is reduced; the dynamic balance checking hole 5 on the helical blade 2 can check the dynamic balance performance of the screw, and the pit 4 on the helical blade 2 can increase the air input of the vacuum pump and improve the working efficiency of the screw; the fillet 3 between the end face and the outer edge face of the spiral blade 2 can prevent the screw rod edges from colliding, even if the coating 8 on the spiral blade 2 has cracks, the cracks are not easily connected into a line, the relative positions of the two screw rods are kept, and the overall abrasion of the screw rods is reduced; the coating 8 on the rotor 1 and the helical blade 2 can prevent the screw from generating corrosion and prolong the service life of the screw.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (9)
1. The utility model provides a fillet type wear-resisting screw rod for vacuum pump which characterized in that: the rotor comprises a rotor, wherein continuous helical blades are arranged on the rotor in the axial direction of the rotor, and fillets are continuously arranged between the end face and the outer edge face of each helical blade in the helical direction.
2. The screw of claim 1, wherein: and the spiral blades of the rotor, which are contacted with the spiral blades, are provided with pits, and the pits are arranged towards the end surface of the rotor.
3. The screw of claim 1, wherein: the spiral blade is provided with a plurality of dynamic balance checking holes.
4. The screw of claim 3, wherein: the dynamic balance checking holes are uniformly distributed on the outer edge surface of the helical blade in pairs.
5. The screw of claim 1, wherein: the length of the inner diameter of the fillet is in the interval of 0.05mm to 2 mm.
6. The screw of claim 1, wherein: lantern rings are respectively arranged at the two ends of the rotor.
7. The screw of claim 6, wherein: and the rotor at the outer side of each lantern ring is respectively provided with a wear-resistant sleeve.
8. The screw of claim 1, wherein: the rotor and the spiral blades are coated with a coating.
9. The screw of claim 8, wherein: the coating is made of Hastelloy, nickel or Teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821925535.XU CN210317751U (en) | 2018-11-21 | 2018-11-21 | Wear-resistant screw rod for fillet type vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821925535.XU CN210317751U (en) | 2018-11-21 | 2018-11-21 | Wear-resistant screw rod for fillet type vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317751U true CN210317751U (en) | 2020-04-14 |
Family
ID=70121371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821925535.XU Active CN210317751U (en) | 2018-11-21 | 2018-11-21 | Wear-resistant screw rod for fillet type vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317751U (en) |
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2018
- 2018-11-21 CN CN201821925535.XU patent/CN210317751U/en active Active
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