CN218062657U

CN218062657U - Hydrogen pump rotor with substrate processing groove for improving plastic-coated binding force

Info

Publication number: CN218062657U
Application number: CN202221041763.7U
Authority: CN
Inventors: 邢子义; 姜静; 徐丙振; 王升科
Original assignee: Yantai Dongde Industrial Co Ltd
Current assignee: Yantai Dongde Industrial Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-12-16
Anticipated expiration: 2032-04-29

Abstract

The utility model provides a base member processing slot improves hydrogen pump rotor of cohesion of moulding by contract, includes rotor body, rotor body's middle part is equipped with a mounting hole, rotor body adopts the metal to make, rotor body's the position that the terminal surface corresponds every blade is equipped with the terminal surface slot, rotor body's blade both sides surface is equipped with the side slot, rotor body's surface is equipped with integrative injection moulding's package and moulds the layer, terminal surface slot and the inside packing of side slot have with the package mould the integrative flute profile injection molding body that links to each other in layer. The binding force between the plastic-coated layer and the rotor body can be increased, and the plastic-coated layer is prevented from falling off; the plastic coating layer has certain elasticity and deformability, is effectively prevented from corrosion, is wear-resistant, has low friction coefficient, has the functions of wear reduction and the like, can be subjected to finish machining after the plastic coating layer is subjected to the integral injection molding on the surface of the rotor body, can reduce the problem of uneven film thickness caused by spraying, and improves the shape precision of the surface of the rotor body, thereby reducing the gap error of the rotor, reducing the assembly gap and improving the pneumatic efficiency.

Description

Hydrogen pump rotor with groove machined on substrate for improving plastic-coated binding force

The technical field is as follows:

the utility model relates to a hydrogen pump rotor with matrix processing grooves for improving plastic-coated binding force.

Background art:

the fuel cell generates electric energy through electrochemical reaction between combustible substances (hydrogen) and oxygen in air, wherein after the fuel cell reaction, discharged gas contains a large amount of hydrogen, and if the hydrogen is directly discharged into the atmosphere, the hydrogen is on one hand wasted energy, on the other hand pollutes the environment, and on the other hand, the hydrogen is flammable and combustible, so that danger is generated. Therefore, it is necessary to recover and reuse such hydrogen. At present, these hydrogen-containing mixed gases are generally recycled to the fuel cell by a hydrogen circulation pump for recycling.

The hydrogen circulating pump type is many, wherein, in roots's formula hydrogen circulating pump, is equipped with positive rotor and negative rotor in the booster, and now, positive rotor and negative rotor generally adopt the aluminum alloy to make, to hydrogenous mist pressure boost in-process, the aluminum alloy material is direct to contact with hydrogenous mist, is corroded by hydrogen and water vapour easily, leads to the clearance error increase, influences job stabilization nature and life. Later, a plastic rotor appears in the market, although the corrosion resistance is strong, the hydrogen pump shell is made of aluminum alloy generally, the plastic rotor is made of a material inconsistent with that of the hydrogen pump shell, the thermal deformation is inconsistent, the hydrogen pump shell is deformed by heating, but the plastic rotor is not deformed, and the situation of blocking and stopping is easy to occur. And in addition, the spraying coating layer is usually made of Teflon or polytetrafluoroethylene materials, so that the thermal expansion coefficient of the materials is large, and the coating layer is separated from the rotor under the condition of high temperature, so that the clearance of the pump is reduced, and the risk of abrasion and blocking is caused. The above problems of the male and female rotors have severely restricted the development of the field of hydrogen circulation pumps.

In summary, in the field of hydrogen circulation pumps, the above problems have become a technical problem to be solved urgently in the industry.

The utility model has the following contents:

the utility model discloses a remedy prior art not enough, provide a hydrogen pump rotor that cohesion was moulded to base member processing slot improvement package, solved the poor problem of aluminum alloy material rotor corrosion resistance in the past, solved the inconsistent problem of plastics rotor and hydrogen pump casing heat altered shape volume in the past, solved complicated, the with high costs of spraying rotor technology in the past, the coating easily drops and produces wearing and tearing, the dead problem of card.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

the utility model provides a matrix processing slot improves hydrogen pump rotor of cohesion of moulding by contract, includes rotor body, rotor body's middle part is equipped with an axle mounting hole, rotor body adopts the metal to make, rotor body's the position that the terminal surface corresponds every blade is equipped with the terminal surface slot, rotor body's blade both sides surface is equipped with the side slot, rotor body's surface is equipped with integrative injection moulding's package and moulds the layer, terminal surface slot and the inside packing of side slot have with the package mould the integrative continuous flute profile injection molding body in layer.

The end surface groove and the side surface groove are dovetail grooves, and the groove-shaped injection molding body is a dovetail-shaped injection molding body matched with the dovetail grooves in shape.

The thickness of the plastic coating layer on the outer surface of the rotor body is 0.1-2mm.

The number of the blades of the rotor body is 2-6.

The plastic coating layer and the groove-shaped injection molding body are made of PEEK, LCP or PFA plastics.

The rotor body is made of aluminum alloy or stainless steel or 45 steel.

And two ends of the end surface groove are respectively communicated with the side surface grooves on two sides.

The above technical scheme is adopted in the utility model, following advantage has:

(1) The end surface grooves are arranged at the positions, corresponding to each blade, of the end surface of the rotor body, the side surface grooves are arranged on the surfaces of the two sides of each blade of the rotor body, and the groove-shaped injection molding bodies in the end surface grooves and the side surface grooves are integrally connected with the plastic coating layer on the outer surface of the rotor body, so that the binding force between the plastic coating layer and the rotor body can be increased, and the plastic coating layer is prevented from falling off;

(2) The plastic-coated layer can be subjected to finish machining after the rotor body surface is subjected to integral injection molding, so that the problem of uneven film thickness caused by spraying can be reduced, and the shape precision of the rotor body surface is improved, so that the gap error of the rotor is reduced, the assembly gap can be reduced, and the pneumatic efficiency is improved;

(3) The plastic coating on the surface of the rotor body is different from a plastic rotor, so that the consistency of the rotor body and a hydrogen pump shell material can be ensured, and the influence of the thinner plastic coating thickness on the thermal deformation is smaller;

(4) The rotor body surface is coated with plastic materials including PEEK, LCP or PFA plastics, and the rotor body surface is made of hydrophobic materials, so that icing inside the hydrogen pump is reduced, and the ice breaking capacity of the hydrogen pump is improved;

(5) The plastic-coated layer has certain elasticity and deformability, so that the rotor cannot be jammed or the surface of the rotor cannot be damaged due to the fact that foreign matters enter gaps in the ice breaking process or when the foreign matters enter the rotor;

(6) The plastic coating layer has the functions of effective corrosion resistance, wear resistance, low friction coefficient, wear reduction and the like.

Description of the drawings:

fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic longitudinal sectional structure of the present invention.

In the figure, the rotor comprises a rotor body 1, a shaft mounting hole 2, a blade 3, an end surface groove 4, a side surface groove 5, a side surface groove 6, a plastic coating layer 7 and a groove-shaped injection molding body.

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. 1-2, a hydrogen pump rotor that cohesion is moulded to base member processing slot improvement package, including rotor body 1, rotor body 1's middle part is equipped with axle mounting hole 2, rotor body 1 adopts the metal to make, rotor body 1's the terminal surface corresponds every blade 3's position and is equipped with

terminal surface slot

4, 3 both sides surfaces of blade of rotor body 1 are equipped with side slot 5, rotor body 1's surface is equipped with integrative injection moulding's package and moulds layer 6,

terminal surface slot

4 and 5 inside packings of side slot have with the package mould the integrative flute profile injection molding 7 that links to each other of layer 6, and the multiplicable package of flute profile injection molding 7 moulds layer 6 and rotor body 1's cohesion, prevents that the package from moulding layer 6 and drop.

The end surface groove 4 and the side surface groove 5 are dovetail grooves, the groove-shaped injection molding body 7 is a dovetail-shaped injection molding body matched with the dovetail grooves in shape, and the injection molding body and the rotor body are combined more firmly through the dovetail-shaped design.

The thickness of the plastic coating layer 6 on the outer surface of the rotor body 1 is 0.1-2mm, fine machining can be performed, the problem of uneven film thickness caused by spraying can be reduced, the shape precision of the surface of the rotor is improved, accordingly, the gap error of the rotor is reduced, the assembly gap can be reduced, and the pneumatic efficiency is improved.

The number of the blades of the rotor body 1 is 2-6.

The plastic-coated layer 6 and the groove-shaped injection molding body 7 are made of PEEK, LCP or PFA plastics. Preferably, the LCP material is adopted in the utility model, because the LCP material has high fluidity and the injection temperature and the mould temperature are low, the LCP material is more suitable for injection molding; from the linear expansion coefficient, the flow direction and the transverse linear expansion coefficient are both smaller than 2.36 x 10-5 of the aluminum alloy 7075T651D, namely the packing force at high temperature is larger, extra measures such as drilling, groove milling and the like are not needed to be considered to increase the bonding force, the linear thermal expansion rate is close to that of a metal material, the gap change at high temperature is small, the wall thickness thinning strength is increased instead, the performance is improved, and the material consumption quota is reduced; and the LCP is low in price.

The rotor body 1 is made of aluminum alloy or stainless steel or 45 steel.

And two ends of the end surface groove 4 are respectively communicated with the side surface grooves 5 at two sides, so that the processing and injection molding filling are facilitated.

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 known to those skilled in the art.

Claims

1. The utility model provides a hydrogen pump rotor that cohesion is moulded to base member processing slot improvement package which characterized in that: the rotor comprises a rotor body, wherein a shaft mounting hole is formed in the middle of the rotor body, the rotor body is made of metal, end face grooves are formed in the positions, corresponding to each blade, of the end face of the rotor body, side face grooves are formed in the surfaces of the two sides of each blade of the rotor body, an integrated injection molding coating layer is arranged on the outer surface of the rotor body, and groove-shaped injection molding bodies which are integrally connected with the coating layer are filled in the end face grooves and the side face grooves.

2. The hydrogen pump rotor with the substrate processing groove for improving the plastic-coated bonding force according to claim 1, is characterized in that: the end surface groove and the side surface groove are dovetail grooves, and the groove-shaped injection molding body is a dovetail-shaped injection molding body matched with the dovetail grooves in shape.

3. The hydrogen pump rotor with the substrate provided with the grooves for improving the plastic-coated bonding force according to claim 1, wherein the hydrogen pump rotor is characterized in that: the thickness of the plastic coating layer on the outer surface of the rotor body is 0.1-2mm.

4. The hydrogen pump rotor with the substrate processing groove for improving the plastic-coated bonding force according to claim 1, is characterized in that: the number of the blades of the rotor body is 2-6.

5. The hydrogen pump rotor with the substrate processing groove for improving the plastic-coated bonding force according to claim 1, is characterized in that: the plastic-coated layer and the groove-shaped injection molding body are made of PEEK, LCP or PFA plastics.

6. The hydrogen pump rotor with the substrate provided with the grooves for improving the plastic-coated bonding force according to claim 1, wherein the hydrogen pump rotor is characterized in that: the rotor body is made of aluminum alloy or stainless steel or 45 steel.

7. The hydrogen pump rotor with the substrate provided with the grooves for improving the plastic-coated bonding force according to claim 1, wherein the hydrogen pump rotor is characterized in that: and two ends of the end surface groove are respectively communicated with the side surface grooves on two sides.