CN210343690U - Claw type hydrogen circulating pump - Google Patents
Claw type hydrogen circulating pump Download PDFInfo
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- CN210343690U CN210343690U CN201921107515.6U CN201921107515U CN210343690U CN 210343690 U CN210343690 U CN 210343690U CN 201921107515 U CN201921107515 U CN 201921107515U CN 210343690 U CN210343690 U CN 210343690U
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Abstract
The utility model relates to a claw type hydrogen circulating pump, which comprises a first shell, a bearing end cover connected with the first shell, and a second shell connected with the bearing end cover; a gear chamber is formed between the first shell and the bearing end cover, two self-lubricating gears which are meshed with each other are arranged in the gear chamber, lubricating oil is not contained in the gear chamber, and the two self-lubricating gears are respectively connected with the driving shaft and the driven shaft; a rotor chamber is formed between the bearing end cover and the second shell, and two three-jaw rotors which are matched with each other are arranged in the rotor chamber. The synchronous gear of the rotor in the utility model adopts the new non-metal self-lubricating technology, has the characteristics of high temperature resistance and no need of lubrication, so that the lubricating oil does not need to be added in the gear chamber, the oil-free operation of the hydrogen circulating pump is realized, and the problem of lubricating oil leakage is solved fundamentally; moreover, the self-lubricating gear made of the non-metallic material also has the advantages of wear resistance and low noise, does not need the replacement and maintenance of lubricating oil, and is equivalent to the maintenance-free gear.
Description
Technical Field
The utility model relates to a claw formula hydrogen circulating pump.
Background
A hydrogen circulating pump in the prior art is mainly applied to the field of fuel cells, wherein a two-claw and two-blade Roots hydrogen circulating pump is mainly adopted, but rotors of the existing hydrogen circulating pump are all driven by synchronous gears which need to be lubricated by lubricating oil, so that a gear chamber needs to be designed, the lubricating oil is added into the gear chamber, the synchronous gears in the gear chamber are connected with a rotor shaft through connecting shafts, an oil sealing device needs to be designed between the gear chamber and the rotor chamber, but the hydrogen circulating pump still has the condition and hidden danger that the lubricating oil permeates or leaks from the gear chamber to the rotor chamber in the actual use process, and the lubricating oil can be contacted with hydrogen after entering the rotor chamber, so that the galvanic pile of the fuel cell is polluted; in addition, two male and female rotors of the existing two-claw hydrogen circulating pump are different, and the male and female rotors have difference which is not easy to be found by naked eyes, so that the error rate is high in actual processing and assembly, the male and female rotors cannot be exchanged and paired, or the male and female rotors can be exchanged only by extremely strict control tolerance, but the male and female rotors are defects and problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a claw type hydrogen circulating pump, which has reasonable structural design, the synchronous gear of the rotor adopts the novel non-metal self-lubricating technology, and has the characteristics of high temperature resistance and no need of lubrication, so that the hydrogen circulating pump can operate without oil without adding lubricating oil in a gear chamber, and the problem of lubricating oil leakage is fundamentally solved; moreover, the self-lubricating gear made of the non-metallic material also has the advantages of wear resistance and low noise, does not need the replacement and maintenance of lubricating oil, equivalently realizes the maintenance-free of the gear, and reduces the corresponding maintenance cost; in addition, the molded lines of the three-jaw rotors are optimized, so that the molded lines of the two three-jaw rotors are completely the same, complete interchange pairing can be realized, the error rate of processing and assembling of the two jaw rotors is greatly reduced, and the problems in the prior art are solved.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a claw-type hydrogen circulation pump comprising:
the bearing comprises a first shell, a bearing end cover connected with the first shell, and a second shell connected with the bearing end cover;
a gear chamber is formed between the first shell and the bearing end cover, two self-lubricating gears which are meshed with each other are arranged in the gear chamber, lubricating oil is not contained in the gear chamber, and the two self-lubricating gears are respectively connected with the driving shaft and the driven shaft;
a rotor chamber is formed between the bearing end cover and the second shell, two three-jaw rotors which are matched with each other are arranged in the rotor chamber, the second shell is provided with an air inlet and an air outlet, the two three-jaw rotors are matched and rotate to enable external air to enter the rotor chamber along the air inlet, and the air is compressed and then discharged from the air outlet.
Furthermore, be equipped with two first bearings that are suitable for and link to each other with driving shaft and driven shaft in the first casing, be equipped with two second bearings that are suitable for and link to each other with driving shaft and driven shaft in the bearing cap, first bearing and second bearing adopt self-lubricating bearing model.
Furthermore, one of the two three-jaw rotors is connected with the driving shaft to form a driving rotor, the other three-jaw rotor is a driven rotor, and the driving shaft is connected with the motor; the driving rotor rotates under the driving of the driving shaft, and the driven rotor is driven to rotate through the two self-lubricating gears, so that the driven rotor matched with the driving rotor rotates along with the driving rotor.
Furthermore, the driving rotor and the driven rotor are the same in shape, and the three-jaw molded lines of the driving rotor and the driven rotor are the same.
Further, the self-lubricating gear is a gear model with a self-lubricating function.
Further, the self-lubricating gear can be made of engineering plastics.
Further, the self-lubricating gear can be selected from PEEK model.
Further, the air inlet is arranged along the radial direction of the three-jaw rotor, and the air outlet is arranged along the axial direction of the three-jaw rotor.
Furthermore, the outer wall of the second shell is provided with reinforcing ribs to increase the strength and the heat dissipation performance of the second shell.
Further, the first bearing and the second bearing are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel and ceramic mixed bearings.
The utility model has the advantages that the structure is reasonable, the synchronous gear of the rotor adopts the new technology of nonmetal self-lubricating, and has the characteristics of high temperature resistance and no need of lubrication, so that the lubricating oil does not need to be added in the gear chamber, the oil-free operation of the hydrogen circulating pump is realized, and the problem of lubricating oil leakage is fundamentally solved; moreover, the self-lubricating gear made of the non-metallic material also has the advantages of wear resistance and low noise, does not need the replacement and maintenance of lubricating oil, equivalently realizes the maintenance-free of the gear, and reduces the corresponding maintenance cost; in addition, the molded lines of the three-jaw rotors are optimized, so that the molded lines of the two three-jaw rotors are completely the same, complete interchange pairing can be realized, and the error rate of processing and assembling of the two jaw rotors is greatly reduced.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic sectional view of the present invention.
Fig. 3 is a schematic structural diagram of the driving rotor and the driven rotor of the present invention.
In the figure, 1, a first housing; 101. an air inlet; 102. an air outlet; 2. a bearing end cap; 3. a second housing; 4. a gear chamber; 5. a self-lubricating gear; 6. a drive shaft; 7. a driven shaft; 8. a rotor chamber; 9. a three-jaw rotor; 901. a driving rotor; 902. a driven rotor; 10. a first bearing; 11. a second bearing; 12. And (5) reinforcing ribs.
Detailed Description
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.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1 to 3, a claw-type hydrogen circulation pump includes: a first shell 1, a bearing end cover 2 connected with the first shell 1, and a second shell 3 connected with the bearing end cover 2; a gear chamber 4 is formed between the first shell 1 and the bearing end cover 2, two self-lubricating gears 5 which are meshed with each other are arranged in the gear chamber 4, lubricating oil does not exist in the gear chamber 4, and the two self-lubricating gears 5 are respectively connected with a driving shaft 6 and a driven shaft 7; a rotor chamber 8 is formed between the bearing end cover 2 and the second shell 3, two three-jaw rotors 9 which are matched with each other are arranged in the rotor chamber 8, the second shell 3 is provided with an air inlet 301 and an air outlet 302, the two three-jaw rotors 9 are matched with each other to rotate so that external air enters the rotor chamber 8 along the air inlet 301, and the air is compressed and then discharged from the air outlet 302. The self-lubricating gear 5 connected with the three-jaw rotor 9 through the shaft adopts a novel non-metal self-lubricating technology, and has the characteristics of high temperature resistance and no need of lubrication, so that lubricating oil does not need to be added into the gear chamber 4, oil-free operation of the hydrogen circulating pump is realized, and the problem of lubricating oil leakage is fundamentally solved; moreover, the self-lubricating gear 5 made of the non-metallic material also has the advantages of wear resistance and low noise, does not need the replacement and maintenance of lubricating oil, equivalently realizes the maintenance-free of the gear, and reduces the corresponding maintenance cost.
In the preferred embodiment, two first bearings 10 suitable for being connected with the driving shaft 6 and the driven shaft 7 are arranged in the first shell 1, two second bearings 11 suitable for being connected with the driving shaft 6 and the driven shaft 7 are arranged in the bearing end cover 2, and the first bearings 10 and the second bearings 11 are of self-lubricating bearing types. Position fixing is carried out through first bearing 10 and second bearing 11 to driving shaft 6 and driven shaft 7, makes the rotation of driving shaft 6 and driven shaft 7 more steady, effectively transmits the moment of torsion of motor, adopts self-lubricating bearing model moreover, has further stopped the lubricating oil of bearing position, has thoroughly guaranteed the state of no lubricating oil, ensures that rotor chamber 8 is in hundred percent oil-free state, has solved the poisoned problem of fuel cell pile.
In the preferred embodiment, the driving rotor 901 is connected with the driving shaft 6 in the two three-jaw rotors 9, the driven rotor 902 is connected with the other three-jaw rotor 9, and the driving shaft 6 is connected with the motor; the driving rotor 901 is driven by the driving shaft 6 to rotate, and the driven rotor 902 is driven to rotate through the two self-lubricating gears 5, so that the driven rotor 902 matched with the driving rotor 901 rotates along with the driving rotor 901. The material type of the three-jaw rotor 9 is further limited, and engineering plastic types are selected, for example: the peek plastic material can satisfy the effect that the driving rotor 901 drives the driven rotor 902 to rotate, only needs the driving shaft 6 and the motor to be connected, the driving shaft 6 drives the driving rotor 901 to rotate under the driving of the motor, and the driving rotor 901 drives the driven rotor 902 matched with the driving rotor 901 to rotate along the driven shaft 7.
It should be noted that the three-jaw rotor 9 may be made of aluminum alloy or engineering plastic, and the type of the three-jaw rotor 9 is not limited.
In the preferred embodiment, the driving rotor 901 and the driven rotor 902 are identical in shape, and the three-jaw profile of both rotors is identical. By optimizing the molded lines of the three-jaw rotors 9, the molded lines of the two three-jaw rotors 9 are completely the same, complete interchange pairing can be realized, and the error rate of processing and assembling of the two three-jaw rotors 9 is greatly reduced.
In the preferred embodiment, the self-lubricating gear 5 is of a gear type having a self-lubricating function.
In the preferred embodiment, the self-lubricating gear 5 is of a technical plastic type. The self-lubricating gear 5 made of the engineering plastic material has excellent performance, does not need lubricating oil for lubrication, has good wear resistance and self-lubricating property, and is suitable for the self-lubricating gear 5 in the scheme.
In a preferred embodiment, the self-lubricating gear 5 is specifically chosen from PEEK models. Polyether-ether-ketone (PEEK) resin is a special engineering plastic with excellent performance, has more remarkable advantages compared with other special engineering plastics, and can be used for high-end science and technology such as machinery, nuclear engineering, aviation and the like due to the high temperature resistance of 260 ℃, excellent mechanical performance, good self-lubricating property, chemical corrosion resistance, flame retardance, peeling resistance, wear resistance, strong nitric acid resistance, concentrated sulfuric acid resistance and radiation resistance and super-strong mechanical performance.
In the preferred embodiment, the air inlet 301 is disposed in the radial direction of the three-jaw rotor 9, and the air outlet 302 is disposed in the axial direction of the three-jaw rotor 9. In the process of mutual rotation of the two three-jaw rotors 9, the radial directions of the two three-jaw rotors are matched with each other through the claw-shaped parts, so that the capture and acquisition of hydrogen are realized, external hydrogen smoothly enters the rotor chamber 8 along the air inlet 301, and is sent out from the air outlet 302 through the rotation of the two three-jaw rotors 9 so as to be used by a fuel cell.
In a preferred embodiment, the outer wall of the second housing 3 is provided with reinforcing ribs 12 to increase the strength and heat dissipation performance of the second housing 3. The unique design of strengthening rib has not only effectively improved the structural strength of second casing 3, has increased the heat dispersion of second casing 3 moreover, makes the heat that three-jaw rotor 9 produced at high-speed rotation in-process can scatter and disappear rapidly, guarantees the radiating effect.
In the preferred embodiment, the first bearing 10 and the second bearing 11 are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel ceramic hybrid bearings. The ceramic bearing has the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation resistance, oil-free self-lubrication, high rotating speed and the like. The material can be used in extremely severe environment and special working conditions, can be widely applied to the fields of aviation, aerospace, navigation, petroleum, chemical engineering, automobiles, electronic equipment, metallurgy, electric power, textile, pumps, medical instruments, scientific research, national defense and military and the like, and is a high-tech product applied to new materials. The ring and the rolling body of the ceramic bearing are made of all-ceramic materials, namely zirconium oxide (ZrO2), silicon nitride (Si3N4) and silicon carbide (Sic). The retainer is made of polytetrafluoroethylene, nylon 66, polyetherimide, zirconia, silicon nitride, stainless steel or special aviation aluminum, so that the application range of the ceramic bearing is expanded; self-lubricating stainless steel bearing and stainless steel ceramic hybrid bearing have above-mentioned ceramic bearing's advantage equally, can satisfy the oil-free design theory in this scheme, and the structural model of first bearing 10 and second bearing 11 does not do the restriction, can have simultaneously hydrogen corrosion prevention and hydrogen embrittlement's effect under the prerequisite that satisfies mechanical requirement.
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 (10)
1. A claw-type hydrogen circulation pump, comprising:
the bearing comprises a first shell, a bearing end cover connected with the first shell, and a second shell connected with the bearing end cover;
a gear chamber is formed between the first shell and the bearing end cover, two self-lubricating gears which are meshed with each other are arranged in the gear chamber, lubricating oil is not contained in the gear chamber, and the two self-lubricating gears are respectively connected with the driving shaft and the driven shaft;
a rotor chamber is formed between the bearing end cover and the second shell, two three-jaw rotors which are matched with each other are arranged in the rotor chamber, the second shell is provided with an air inlet and an air outlet, the two three-jaw rotors are matched and rotate to enable external air to enter the rotor chamber along the air inlet, and the air is compressed and then discharged from the air outlet.
2. The claw-type hydrogen circulation pump according to claim 1, wherein two first bearings adapted to be connected to the driving shaft and the driven shaft are provided in the first housing, two second bearings adapted to be connected to the driving shaft and the driven shaft are provided in the bearing cap, and the first bearings and the second bearings are of self-lubricating bearing type.
3. The claw-type hydrogen circulation pump according to claim 1 or 2, wherein one of the two three-claw rotors is connected with a driving shaft to form a driving rotor, the other three-claw rotor is connected with a driven rotor, and the driving shaft is connected with a motor; the driving rotor rotates under the driving of the driving shaft, and the driven rotor is driven to rotate through the two self-lubricating gears, so that the driven rotor matched with the driving rotor rotates along with the driving rotor.
4. The claw-type hydrogen circulation pump according to claim 3, wherein the driving rotor and the driven rotor have the same shape, and the three-claw profile of the driving rotor and the three-claw profile of the driven rotor are the same.
5. The claw-type hydrogen circulation pump according to claim 1, wherein the self-lubricating gear is a gear type having a self-lubricating function.
6. The claw-type hydrogen circulation pump according to claim 5, wherein the self-lubricating gear is made of engineering plastic.
7. A claw-type hydrogen circulation pump according to claim 6, wherein the self-lubricating gear is selected from PEEK model.
8. The claw-type hydrogen circulation pump according to claim 1, wherein the gas inlet is arranged in a radial direction of the three-claw rotor, and the gas outlet is arranged in an axial direction of the three-claw rotor.
9. The claw-type hydrogen circulation pump according to claim 1, wherein the outer wall of the second casing is provided with reinforcing ribs to increase the strength and the heat dissipation performance of the second casing.
10. The claw-type hydrogen circulation pump according to claim 2, wherein the first bearing and the second bearing are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel ceramic hybrid bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107515.6U CN210343690U (en) | 2019-07-15 | 2019-07-15 | Claw type hydrogen circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107515.6U CN210343690U (en) | 2019-07-15 | 2019-07-15 | Claw type hydrogen circulating pump |
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| Publication Number | Publication Date |
|---|---|
| CN210343690U true CN210343690U (en) | 2020-04-17 |
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|---|---|---|---|
| CN201921107515.6U Active CN210343690U (en) | 2019-07-15 | 2019-07-15 | Claw type hydrogen circulating pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319004A (en) * | 2019-07-15 | 2019-10-11 | 烟台菱辰能源有限公司 | A kind of claw hydrogen gas circulating pump |
-
2019
- 2019-07-15 CN CN201921107515.6U patent/CN210343690U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319004A (en) * | 2019-07-15 | 2019-10-11 | 烟台菱辰能源有限公司 | A kind of claw hydrogen gas circulating pump |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 264000 south of xingjiazhuang village, Tingkou Town, Qixia City, Yantai City, Shandong Province Patentee after: Yantai Dongde Hydrogen Energy Technology Co., Ltd Address before: Room 1201, 12th floor, Building C, Yida Zhihui Valley, 300 Changjiang Road, Yantai Economic and Technological Development Zone, Shandong Province, 264000 Patentee before: YANTAI LINGCHEN ENERGY Co.,Ltd. |
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| CP03 | "change of name, title or address" |