CN210371158U

CN210371158U - Air inlet and outlet structure of claw-type hydrogen circulating pump

Info

Publication number: CN210371158U
Application number: CN201921106028.8U
Authority: CN
Inventors: 邢子义; 王升科; 谢元豪; 田帅; 张勤宇; 王明
Original assignee: Yantai Dongde Industrial Co Ltd
Current assignee: Yantai Dongde Industrial Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-04-21
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a gas inlet and outlet structure of a claw-type hydrogen circulating pump, which comprises a pump body and an end cover, wherein a driving shaft and a driven shaft are arranged in the pump body; the end cover is connected with the pump body, a driving rotor and a driven rotor which are respectively connected with the driving shaft and the driven shaft are arranged in the end cover, and the driving rotor and the driven rotor are provided with three claw-shaped blades which are matched with each other; the end cover is provided with an air inlet corresponding to the radial intersection position of the driving rotor and the driven rotor, and an air outlet corresponding to the axial position of the driving rotor and the driven rotor. The utility model has reasonable structural design, the air inlet is arranged along the radial intersection of the driving rotor and the driven rotor, and smooth air inlet is ensured; the air outlet is arranged at the axial position of the driving rotor and the driven rotor and is arranged in a biased way relative to the middle position of the axial line of the driving rotor and the axial line of the driven rotor, so that the air outlet just corresponds to the separation position of the claw-shaped blades matched with the driving rotor and the driven rotor, and the shape of the air outlet is uniquely designed according to the claw shape of the rotor, thereby ensuring smooth air outlet.

Description

Air inlet and outlet structure of claw-type hydrogen circulating pump

Technical Field

The utility model relates to a business turn over gas port structure of claw formula hydrogen circulating pump.

Background

The hydrogen circulating pump in the prior art is mainly applied to the field of fuel cells, the hydrogen circulating pump mainly comprises two types of claw type hydrogen circulating pumps and roots type hydrogen circulating pumps at present, the two types of hydrogen circulating pumps are mainly characterized in that the two types of hydrogen circulating pumps are in an internal rotor structure form, wherein rotors inside the claw type hydrogen circulating pumps are in claw type structures, the number of claw type blades of claw type rotors inside the claw type hydrogen circulating pumps in the mainstream at present is two, namely the two claw type hydrogen circulating pumps, but along with the rapid development of the field of fuel cells in recent years, the two claw type hydrogen circulating pumps are limited by the structures of self rotors, the efficiency of conveying hydrogen is lower, and the fuel cell system with larger demand on hydrogen quantity is difficult to meet, so that an inventor carries out structural improvement on the claw type hydrogen circulating pumps, the number of the claw type blades of the internal rotors is increased, the hydrogen circulating pumps are designed into three claw type hydrogen circulating pumps according to demands, but the structures of, can cause the hindrance to the flow of gas, influence business turn over gas efficiency, reduce hydrogen circulating pump's result of use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas inlet and outlet structure of a claw type hydrogen circulating pump, which has reasonable structural design, and the gas inlet is arranged along the radial intersection of a driving rotor and a driven rotor to ensure smooth gas inlet; the gas outlet is arranged at the axial position of the driving rotor and the driven rotor and is arranged in a biased way relative to the middle position of the axial line of the driving rotor and the axial line of the driven rotor, so that the gas outlet just corresponds to the separation position of the claw-shaped blades matched with the driving rotor and the driven rotor, and the shape of the gas outlet is uniquely designed according to the claw shape of the rotor, thereby ensuring smooth gas outlet and solving the problems existing in the prior art.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: an air inlet and outlet structure of a claw-type hydrogen circulation pump, comprising:

the pump body is internally provided with a driving shaft and a driven shaft;

the end cover is connected with the pump body, a driving rotor and a driven rotor which are respectively connected with a driving shaft and a driven shaft are arranged in the end cover, and three claw-shaped blades which are matched with each other are arranged on the driving rotor and the driven rotor; the end cover is provided with an air inlet corresponding to the radial intersection position of the driving rotor and the driven rotor, an air outlet corresponding to the axial position of the driving rotor and the axial position of the driven rotor is arranged on the end cover, and the air outlet is arranged corresponding to the separation position of the claw-shaped blades of the driving rotor and the driven rotor.

Furthermore, the air outlet is arranged in a biased mode along the middle position of the axis of the driving rotor and the axis of the driven rotor, and the air outlet is of a triangular structure.

Furthermore, the outer wall of the end cover corresponding to the air inlet and the air outlet is provided with an air duct.

Furthermore, the outer wall of the end cover is provided with a plurality of reinforcing ribs, and the two guide pipes are connected with the reinforcing ribs at corresponding positions.

Further, the driving rotor and the driven rotor are set to be of the same structure, and the three claw-shaped blades of the driving rotor and the driven rotor are set to be of the same structure.

Furthermore, the reinforcing ribs are in an intercrossing structure.

Furthermore, two rotor cavities which are symmetrical to each other and are arranged along a circumferential track are arranged in the end cover, the two rotor cavities are communicated with each other, an air inlet plane is arranged at the intersection of the two rotor cavities at the corresponding positions of the air inlets, and the two rotor cavities close to the air outlets are arranged in a normal intersecting mode along the middle position.

The utility model has the advantages that the structure is reasonable, the air inlet is arranged along the radial intersection of the driving rotor and the driven rotor, and smooth air inlet is ensured; the air outlet is arranged at the axial position of the driving rotor and the driven rotor and is arranged in a biased way relative to the middle position of the axial line of the driving rotor and the axial line of the driven rotor, so that the air outlet just corresponds to the separation position of the claw-shaped blades matched with the driving rotor and the driven rotor, and the shape of the air outlet is uniquely designed according to the claw shape of the rotor, thereby ensuring smooth air outlet.

Drawings

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

Fig. 2 is a schematic side view of the end cap of the present invention.

Fig. 3 is a schematic view of the structure of the gas inlet and outlet of the two rotors of the present invention.

Fig. 4 is a schematic view of the profile structure of the rotor according to the present invention.

In the figure, 1, a pump body; 2. an end cap; 201. a rotor cavity; 3. a drive shaft; 4. a driven shaft; 5. a driving rotor; 6. a driven rotor; 7. a claw-shaped blade; 8. an air inlet; 9. an air outlet; 10. an air duct; 11. reinforcing ribs; 12. and (4) an air inlet plane.

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. 1-4, an air inlet and outlet structure of a claw-type hydrogen circulation pump comprises a pump body 1 and an end cover 2, wherein a driving shaft 3 and a driven shaft 4 are arranged in the pump body 1, the end cover 2 is connected with the pump body 1, a driving rotor 5 and a driven rotor 6 which are respectively connected with the driving shaft 3 and the driven shaft 4 are arranged in the end cover 2, and three claw-shaped blades 7 which are matched with each other are arranged on the driving rotor 5 and the driven rotor 6; the end cover 2 is provided with an air inlet 8 corresponding to the radial intersection position of the driving rotor 5 and the driven rotor 6, the end cover 2 is provided with an air outlet 9 corresponding to the axial position of the driving rotor 5 and the driven rotor 6, and the air outlet 9 is arranged corresponding to the separation position of the claw-shaped blades 7 of the driving rotor 5 and the driven rotor 6. When the air inlet device is used, the driving motor drives the driving shaft 3 to rotate, the driving rotor 5 connected with the driving shaft 3 drives the driven rotor 6 to rotate, and the air inlet 8 is arranged along the radial intersection of the driving rotor 5 and the driven rotor to ensure smooth air inlet; the air outlet 9 is arranged at the axial position of the driving rotor 5 and the driven rotor 6 and is arranged in a bias way relative to the middle position of the axial line of the driving rotor 5 and the axial line of the driven rotor 6, so that the air outlet 9 just corresponds to the separation position of the claw-shaped blades 7 matched with the driving rotor 5 and the driven rotor 6, and the shape of the air outlet 9 is uniquely designed according to the molded lines of the claw-shaped blades 7 of the rotors, thereby ensuring smooth air outlet.

In the preferred embodiment, the air outlets 9 are offset along the axial center of the driving rotor 5 and the driven rotor 6, and the air outlets 9 are arranged in a triangular configuration. As shown in fig. 3-4, the position and shape of the air outlet 9 are arranged according to the claw-shaped blade line type of the driving rotor 5 and the driven rotor 6, which is in accordance with the actual use situation and ensures smooth air outlet.

In the preferred embodiment, the outer wall of the end cap 2 corresponding to the air inlet 8 and the air outlet 9 is provided with an air duct 10. In order to reinforce and protect the air inlet 8 and the air outlet 9, an air duct 10 structure is arranged, and meanwhile, the air duct is conveniently connected with an external pipeline.

In the preferred embodiment, the outer wall of the end cap 2 is provided with a plurality of ribs 11, and two guide tubes 10 are connected with the corresponding ribs 11. The structural strength of the end cover 2 is increased through the reinforcing ribs 11, and meanwhile, the two guide pipes 10 are reinforced, so that the structural strength of the air inlet 8 and the air outlet 9 is increased equivalently.

In the preferred embodiment, the driving rotor 5 and the driven rotor 6 are provided with the same structure, and the three claw blades 7 of the driving rotor 5 and the driven rotor 6 are provided with the same structure. The driving rotor 5 and the driven rotor 6 are convenient to install and match, can be freely exchanged and installed, and are convenient to manufacture, process and assemble.

In the preferred embodiment, the ribs 11 are provided in an interdigitated configuration. The mutually crossed reinforcing ribs 11 further improve the structural strength of the end cap 2 and the air duct 10.

In a preferred embodiment, two symmetrical rotor cavities 201 are arranged in the end cover 2 along a circumferential track, the two rotor cavities 201 are communicated with each other, an air inlet plane 12 is arranged at the intersection of the two rotor cavities 201 at the position corresponding to the air inlet 8, and the two rotor cavities 201 at the position close to the air outlet 9 are arranged along the middle position and are normally intersected with each other. In order to obtain the biggest efficiency of admitting air and giving vent to anger efficiency, rotor chamber 201 in to end cover 2 carries out reasonable design according to claw shape blade 7's molded lines structure, and air inlet 8 sets up in air intake plane 12 position, and gas outlet 9 sets up in two rotor chamber 201 below normal intersection position one side, and air intake plane 12's design makes the claw shape blade 7 transition of initiative rotor 5 and driven rotor 6 more level and smooth, has bigger area of admitting air, admits air more steadily.

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

1. The utility model provides an business turn over gas port structure of claw formula hydrogen circulating pump which characterized in that includes:

the pump body is internally provided with a driving shaft and a driven shaft;

2. The gas inlet and outlet structure of a claw-type hydrogen circulation pump according to claim 1, wherein the gas outlet is offset along the middle position of the axes of the driving rotor and the driven rotor, and the gas outlet is triangular.

3. The air inlet and outlet structure of the claw-type hydrogen circulating pump according to claim 1 or 2, wherein air ducts are arranged on the outer walls of the end covers corresponding to the air inlet and the air outlet.

4. The air inlet and outlet structure of a claw-type hydrogen circulation pump according to claim 3, wherein the outer wall of the end cover is provided with a plurality of reinforcing ribs, and two guide pipes are connected with the reinforcing ribs at corresponding positions.

5. An inlet/outlet structure of a claw-type hydrogen circulation pump according to claim 1, wherein the driving rotor and the driven rotor are provided with the same structure, and the three claw-shaped blades of the driving rotor and the driven rotor are provided with the same structure.

6. An inlet and outlet structure for a claw-type hydrogen circulation pump according to claim 4, wherein said reinforcing ribs are provided in an interdigitated configuration.

7. An air inlet and outlet structure of a claw-type hydrogen circulation pump according to claim 1 or 5, wherein two symmetrical rotor cavities are arranged in the end cover along a circumferential track, the two rotor cavities are communicated with each other, an air inlet plane is arranged at the intersection of the two rotor cavities at the position corresponding to the air inlet, and the two rotor cavities near the air outlet are arranged to normally intersect with each other along a middle position.