CN216342806U

CN216342806U - New energy automobile electron vacuum pump velocity of flow test equipment

Info

Publication number: CN216342806U
Application number: CN202122529090.1U
Authority: CN
Inventors: 任城龙; 陈志强; 许王勇; 江波吟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-19
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a new energy automobile electronic vacuum pump flow rate testing device, belongs to the field of new energy automobile inspection, and solves the problems that in the prior art, dust particles and water molecules are fully distributed in an air environment in a detection workshop, so that not only is the detection result of a vacuum pump affected, but also the internal structure of the vacuum pump is abraded and corroded; this scheme is through the inlet end assembly at the vacuum pump a set of component of rejecting for dust, the hydrone in the air is rejected, thereby avoid the velocity of flow testing process of vacuum pump, receive the influence of dust, hydrone, in addition, this scheme detects the back that finishes at the vacuum pump, through the cooperation of interlock component with the component of removing dust, carries out the deashing to the collection dirt electrode plate in rejecting the component and handles, prepares for next work.

Description

New energy automobile electron vacuum pump velocity of flow test equipment

Technical Field

The utility model belongs to the field of detection of new energy automobiles, and particularly relates to a new energy automobile electronic vacuum pump flow velocity testing device.

Background

The electric automobile is driven by electric power, a traditional engine is omitted, a vacuum source is lost, namely, vacuum power cannot be provided for an automobile brake master cylinder, the electric vacuum pump is required to assist, when various performance indexes of the new energy automobile are tested, the flow rate test of the vacuum pump is also one of the tests, when various automobile parts, related detection equipment, engine oil cooling water and the like are generally piled in a detection workshop, dust particles and water molecules are distributed in the air environment in the detection workshop, the dust particles and the water molecules not only influence the detection result of the vacuum pump, but also cause abrasion and corrosion to the internal structure of the vacuum pump, and therefore the utility model provides the new energy automobile electronic vacuum pump flow rate test equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that dust particles and water molecules are fully distributed in the air environment in a detection workshop, the detection result of a vacuum pump is influenced, and the internal structure of the vacuum pump is abraded and corroded, the utility model provides the new energy automobile electronic vacuum pump flow velocity testing equipment.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a new energy automobile electron vacuum pump velocity of flow test equipment, including test platform, the last vacuum pump that installs of test platform, the inlet end of vacuum pump is provided with rejects the component, it is used for rejecting dust and the hydrone in the air at the vacuum pump in-process to reject the component, the end of giving vent to anger of rejecting the component is provided with the velocity of flow sensor who is used for detecting air flow rate, it still is provided with the dust removal component on the component to reject, the dust removal component is used for removing dust the processing to rejecting the component after the vacuum pump test finishes, be provided with the interlock component between the output of dust removal component and vacuum pump, the interlock component is used for ordering about dust removal component work.

As a further optimization of the present invention.

The removing component comprises a dust removing shell arranged on the test platform, the dust removing shell is of a shell structure with two open ends and is horizontally arranged, one side surface of the dust removing shell is provided with a connecting pipe a, the other side surface of the dust removing shell is provided with a connecting pipe b, the tail end of the connecting pipe b is provided with a filter plate, the tail end of the connecting pipe a is communicated with the air inlet end of the vacuum pump, two groups of net covers are axially arranged in the connecting pipe a, the part of the connecting pipe a, which is positioned between the two groups of net covers, is a drying area, and a drying agent is arranged in the drying area,

the flow velocity sensor is arranged on the connecting pipe a and is positioned between the drying area and the air inlet end of the vacuum pump;

the dust removal shell is internally provided with two groups of dust collecting electrode plates which are respectively positioned on the upper cavity wall and the lower cavity wall of the dust removal shell, and an electrostatic field for absorbing dust is formed between the two groups of dust collecting electrode plates.

As a further optimization of the present invention.

One open end of the dust removing shell is a dust discharging port, the other open end of the dust removing shell is a cleaning port, and the dust removing component comprises a sealing plate piece and a dust removing piece, wherein the sealing plate piece is arranged at the dust discharging port of the dust removing shell and used for opening or closing the dust discharging port, and the dust removing piece is arranged at the cleaning port of the dust removing shell and used for performing surface dust removing treatment on the dust collecting electrode plate.

As a further optimization of the present invention.

The upper end surface of the dust removing shell is provided with a support, the sealing plate piece comprises a guide rod b vertically and slidably mounted on the support, the top end of the guide rod b is provided with a limiting nut, the bottom end of the guide rod b is provided with a sealing plate, and the sealing plate closes a dust exhaust port of the dust removing shell in an initial state;

the spring b positioned between the sealing plate and the support is sleeved outside the guide rod b, the support is provided with an electromagnet, and the upper end face of the sealing plate is provided with a magnet.

As a further optimization of the present invention.

The dust removing piece comprises a guide rod a vertically arranged at the cleaning opening of the dust removing shell, a dust removing block is connected to the outer part of the guide rod a in a sliding manner, the upper end face of the dust removing block and the upper collecting electrode plate are positioned in the same horizontal plane, and the lower end face of the dust removing block and the lower collecting electrode plate are positioned in the same horizontal plane;

the outer portion of the guide rod a is sleeved with a spring a used for driving the dust removal block to move away from the sealing plate, and in an initial state, the linkage component overcomes the elastic force of the spring a to enable the dust removal block to be located in the dust removal shell and to be in contact with the sealing plate.

As a further optimization of the present invention.

The linkage component is arranged between the vacuum pump and the dust removal block and comprises a trigger part and a linkage part, the linkage part is used for overcoming the elasticity of the spring a to push the dust removal block into the dust removal shell and contact with the sealing plate, and the trigger part is used for drawing the linkage part to cancel the pushing of the dust removal block in the operation process of the vacuum pump.

As a further optimization of the present invention.

The linkage piece comprises a sliding rod which is horizontally arranged on the test platform and the guiding direction of the sliding rod is vertical to the extending direction of the inner cavity of the dust removal shell, the outer part of the sliding rod is connected with a transfer rod in a sliding mode, a spring c used for driving the transfer rod to move away from the dust removal block is sleeved on the outer part of the sliding rod, and the elastic coefficient of the spring c is larger than that of the spring a;

the linkage piece also comprises a linkage rod positioned on one side of the dust removal block, which is far away from the vacuum pump, the surface of the linkage rod, which faces the dust removal block, is a squeezing inclined plane, the squeezing inclined plane is contacted with the dust removal block, and the distance between the squeezing inclined plane and the dust removal block is gradually increased along the extension direction of the inner cavity of the dust removal shell and the direction from the dust removal port to the dust removal port;

the transmission rod is connected with the linkage rod through a connecting rod.

As a further optimization of the present invention.

The trigger part is arranged at the output end of the vacuum pump, the contact part comprises a lantern ring coaxially sleeved at the output end of the vacuum pump, the outer circular surface of the lantern ring is provided with centrifugal parts, and the centrifugal parts are arranged in a plurality of groups in an array manner along the circumferential direction of the lantern ring;

the centrifugal piece comprises a barrel shell, one end of the barrel shell is closed and connected with the lantern ring, the other end of the barrel shell is open and provided with a limiting step, a centrifugal rod is arranged in the barrel shell in a sliding mode, one end of the centrifugal rod is provided with a sliding step, the sliding step and the inner cavity of the barrel shell form a sliding guide fit, the other end of the centrifugal rod penetrates through the limiting step and extends out of the barrel shell, a centrifugal ball is arranged at the end of the centrifugal rod, the centrifugal ball is in contact with a transmission rod, and a spring d located between the sliding step and the limiting step is sleeved on the outer portion of the centrifugal rod.

As a further optimization of the present invention.

The testing platform is provided with a rotating shaft, the trigger piece is sleeved at the output end of the rotating shaft, and the output end of the vacuum pump is connected with the detachable power of the input end of the rotating shaft.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the scheme, a group of removing components are assembled at the air inlet end of the vacuum pump and are used for removing dust and water molecules in the air, so that the influence of the dust and the water molecules in the flow speed detection process of the vacuum pump is avoided;

2. this scheme detects the back that finishes at the vacuum pump, through the cooperation of interlock component with the component that removes dust, carries out the deashing to the collecting electrode board in rejecting the component and handles, for next work preparation, prevents that the dust accumulation is too much, influences the dust removal effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the vacuum pump and the rejection member of the present invention;

FIG. 3 is a schematic view of the rejection member of the present invention;

FIG. 4 is a cross-sectional view of a rejection member of the present invention;

FIG. 5 is a schematic structural view of a dust-removing member according to the present invention;

FIG. 6 is a schematic structural diagram of a closure member according to the present invention;

FIG. 7 is a schematic view of a linkage member according to the present invention;

fig. 8 is a schematic structural view of the trigger of the present invention.

Reference numerals:

10. a vacuum pump; 20. a rejecting member; 21. a dust removal shell; 22. a connecting pipe a; 23. a connecting pipe b; 24. filtering the plate; 25. a dust collecting electrode plate; 26. a mesh enclosure; 27. a flow rate sensor; 30. a dust removing member; 31. a guide rod a; 32. a dust removal block; 33. a spring a; 34. a support; 35. a guide rod b; 36. closing the plate; 37. a spring b; 38. an electromagnet; 39. a magnet; 40. a linking member; 41. a slide bar; 42. a transfer lever; 43. a spring c; 44. a linkage rod; 45. a connecting rod; 46. a collar; 47. a cartridge housing; 48. a centrifugal lever; 49. and a spring d.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, a new energy automobile electronic vacuum pump flow rate test device includes a test platform, a vacuum pump 10 is installed on the test platform, an air inlet end of the vacuum pump 10 is provided with a removing component 20, the removing component 20 is used for removing dust and water molecules in air in the air inlet process of the vacuum pump 10, an air outlet end of the removing component 20 is provided with a flow rate sensor 27 for detecting air flow rate, and the flow rate sensor 27 is realized by the prior art and is not described again.

The rejecting member 20 is further provided with a dust removing member 30, the dust removing member 30 is used for performing dust removing treatment on the rejecting member 20 after the vacuum pump 10 is tested, a linkage member 40 is arranged between the dust removing member 30 and the output end of the vacuum pump 10, and the linkage member 40 is used for driving the dust removing member 30 to work.

During operation, the vacuum pump 10 begins to operate, the centrifugal force that the high-speed rotation of vacuum pump 10 produced makes interlock component 40 keep away from and rejects component 20, then, the vacuum pump 10 sucks the air in-process, the air removes dust through rejecting component 20 in proper order, get into in the vacuum pump 10 after the drying process, avoid dust and more hydrone that contain in the air to cause the influence to the velocity of flow testing result and to lead to the fact the wearing and tearing corruption to the inner structure of vacuum pump 10, after the vacuum pump 10 detects and finishes, the vacuum pump 10 stops the operation, at this moment, interlock component 40 is under the driving of self inside spring force, remove dust to rejecting component 20 and handle, prepare for next detection of vacuum pump 10.

As shown in fig. 3 to 4, the removing member 20 includes a dust removing case 21 installed on the testing platform, the dust removing case 21 is a horizontally disposed case structure with two open ends, one side of the dust removing case 21 is provided with a connecting pipe a22, and the other side is provided with a connecting pipe b 23.

The tail end of the connecting pipe b23 is provided with a filter plate 24, the tail end of the connecting pipe a22 is communicated with the air inlet end of the vacuum pump 10, two groups of net covers 26 are axially arranged in the connecting pipe a22, the part of the connecting pipe a22, which is located between the two groups of net covers 26, is a drying area, and a drying agent is arranged in the drying area.

The flow rate sensor 27 is provided on the connection pipe a22 between the drying zone and the air intake end of the vacuum pump 10.

The dust collecting electrode plates 25 are arranged in the dust removing shell 21, two groups of the dust collecting electrode plates 25 are arranged and are respectively positioned on the upper cavity wall and the lower cavity wall of the dust removing shell 21, and an electrostatic field for adsorbing dust is formed between the two groups of the dust collecting electrode plates 25, which can be realized by the prior art and is not described again.

In the process that the vacuum pump 10 operates to enable air to enter the vacuum pump 10 after passing through the rejecting component 20, the air firstly passes through the filter plate 24 to filter relatively large air impurities and then enters the dust removing shell 21, when passing through an electrostatic field in the dust removing shell 21, dust is adsorbed on the surface of the collecting electrode plate 25, then the air passes through a drying area of the connecting pipe a22 and is dried by a drying agent, and then when the air enters the vacuum pump 10 through the connecting pipe a22, the air passes through the flow rate sensor 27 and detects the air flow rate through the flow rate sensor 27, namely, the flow rate of the vacuum pump 10 is detected.

As shown in fig. 3 and 5-6, one open end of the dust removing housing 21 is a dust discharging port, and the other open end is a cleaning port.

The dust removing member 30 includes a closing member disposed at the dust discharging port of the dust removing housing 21 for opening or closing the dust discharging port, and a dust removing member disposed at the cleaning port of the dust removing housing 21 for performing a surface ash removing process on the collecting electrode plate 25.

As shown in fig. 6, the upper end surface of the dust removing housing 21 is provided with a bracket 34, the sealing plate includes a guide rod b35 vertically slidably mounted on the bracket 34, a stop nut is provided at the top end of the guide rod b35, a sealing plate 36 is provided at the bottom end, and in an initial state, the sealing plate 36 closes the dust discharging port of the dust removing housing 21.

The guide rod b35 is externally sleeved with a spring b37 between the closing plate 36 and the bracket 34.

An electromagnet 38 is arranged on the bracket 34, and a magnet 39 is arranged on the upper end face of the closing plate 36.

When the electromagnet 38 is energized, the closing plate 36 moves upward by the magnetic attraction with the magnet 39 to open the dust discharge port of the dust removing case 21, and when the electromagnet 38 is de-energized, the closing plate 36 moves downward by the elastic force of the spring b37 to close the dust discharge port of the dust removing case 21.

As shown in fig. 3 and 5, the dust removing member includes a guide rod a31 vertically disposed at the cleaning opening of the dust removing housing 21, a dust removing block 32 is slidably connected to the outside of the guide rod a31, the upper end surface of the dust removing block 32 and the upper collecting electrode plate 25 are located in the same horizontal plane, and the lower end surface of the dust removing block 32 and the lower collecting electrode plate 25 are located in the same horizontal plane.

The guide rod a31 is externally sleeved with a spring a33 for driving the dust removing block 32 to move away from the sealing plate member, and in an initial state, the linkage member 40 overcomes the elastic force of the spring a33 to enable the dust removing block 32 to be located in the dust removing shell 21 and to be in contact with the sealing plate 36.

When the vacuum pump 10 operates, the centrifugal force generated by high-speed rotation drives the linkage member 40 to operate, the linkage member 40 operates to cancel the extrusion pushing on the dust removing block 32, the dust removing block 32 moves away from the sealing plate part under the action of the elastic force of the spring a33, and the dust removing block 32 is separated from the dust removing shell 21;

after the vacuum pump 10 is detected, the operation is stopped, and at this time, the linking member 40 pushes the dust removing block 32 under the action of the internal elastic force, so that the dust removing block 32 moves close to the plate until the dust removing block 32 contacts the sealing plate 36, and in this process, the dust removing block 32 contacts the surface of the collecting electrode plate 25 and wipes the dust, so that the dust is discharged through the dust discharging port of the dust removing housing 21.

As shown in fig. 7-8, the linking member 40 is disposed between the vacuum pump 10 and the dust removing block 32, the linking member 40 includes a triggering part and a linking part, the linking part is used for pushing the dust removing block 32 into the dust removing shell 21 and contacting the sealing plate 36 against the elastic force of the spring a33, and the triggering part is used for drawing the linking part to cancel the pushing of the dust removing block 32 during the operation of the vacuum pump 10.

As shown in fig. 7, the linkage includes a sliding rod 41 horizontally installed on the testing platform and having a guiding direction perpendicular to the extending direction of the inner cavity of the dust removing housing 21, a transmission rod 42 is slidably connected to the outside of the sliding rod 41, a spring c43 for driving the transmission rod 42 to move away from the dust removing block 32 is sleeved on the outside of the sliding rod 41, and the elastic coefficient of the spring c43 is greater than that of the spring a 33.

The linkage piece further comprises a linkage rod 44 positioned on one side of the dust removal block 32, which is away from the vacuum pump 10, the surface of the linkage rod 44, which faces the dust removal block 32, is a pushing inclined surface, the pushing inclined surface is in contact with the dust removal block 32, and the distance between the pushing inclined surface and the dust removal block 32 increases progressively along the extension direction of the inner cavity of the dust removal shell 21 and the direction from the dust removal port to the dust removal port.

The transmission rod 42 and the linkage rod 44 are connected through a connection rod 45.

When the vacuum pump 10 is not in operation, because the elastic coefficient of the spring c43 is greater than that of the spring a33, the elastic force of the spring c43 overcomes the elastic force of the spring a33 to drive the transmission rod 42 to move away from the dust removal block 32, the transmission rod 42 moves to pull the linkage rod 44 to move synchronously through the connecting rod 45, the dust removal block 32 is pushed through the pushing inclined plane, the dust removal block 32 is located in the dust removal shell 21 and contacts with the sealing plate 36, and the spring a33 is in a compressed state.

As shown in fig. 1 and 8, the trigger member is installed at the output end of the vacuum pump 10, the contact member includes a collar 46 coaxially sleeved at the output end of the vacuum pump 10, centrifugal members are arranged on the outer circumferential surface of the collar 46, and multiple groups of centrifugal members are arranged in an array along the circumferential direction of the collar 46.

The centrifugal part comprises a cylinder shell 47, one end of the cylinder shell 47 is closed and connected with the lantern ring 46, the other end of the cylinder shell 47 is open and provided with a limiting step, and a centrifugal rod 48 is arranged in the cylinder shell 47 in a sliding mode.

One end of the centrifugal rod 48 is provided with a sliding step which is matched with the inner cavity of the cylinder shell 47 in a sliding and guiding way, the other end of the centrifugal rod 48 penetrates through the limiting step and extends out of the cylinder shell 47, and the end is provided with a centrifugal ball which is contacted with the transmission rod 42.

The centrifugal rod 48 is externally sleeved with a spring d49 positioned between the sliding step and the limiting step.

When the vacuum pump 10 is running, the output end of the vacuum pump pulls the trigger to rotate at high speed synchronously, during the rotation process, under the action of centrifugal force, the centrifugal ball and the centrifugal rod 48 overcome the elastic forces of the spring d49 and the spring c43, drive the transmission rod 42 to move close to the dedusting block 32, further remove the squeezing of the squeezing inclined plane on the dedusting block 32, and under the action of the elastic force of the spring a33, move the dedusting block 32 away from the sealing plate, so that the dedusting block 32 is separated from the dedusting shell 21.

The working principle of the utility model is as follows:

firstly, the vacuum pump 10 starts to operate, the output end of the vacuum pump pulls the trigger piece to synchronously rotate at high speed, in the rotating process, under the action of centrifugal force, the centrifugal ball and the centrifugal rod 48 overcome the elastic forces of the spring d49 and the spring c43 to drive the transmission rod 42 to move close to the dedusting block 32, so that the extrusion pushing inclined plane cancels the extrusion pushing of the dedusting block 32, and under the action of the elastic force of the spring a33, the dedusting block 32 moves away from the sealing plate piece to separate the dedusting block 32 from the dedusting shell 21;

then, the air is sequentially filtered by the filter plate 24 to remove larger air impurities, adsorbed by the dust collecting electrode plate 25, dried by the drying agent, and tested by the flow velocity sensor 27 to enter the vacuum pump 10, so that the influence of the dust and more water molecules in the air on the flow velocity detection result and the abrasion and corrosion of the internal structure of the vacuum pump 10 are avoided;

after the vacuum pump 10 finishes detection, the vacuum pump 10 stops running, at this time, when the electromagnet 38 is powered on, the sealing plate 36 moves upwards through the magnetic attraction between the electromagnet 38 and the magnet 39, and then the dust exhaust port of the dust removal shell 21 is opened, meanwhile, because the elastic coefficient of the spring c43 is greater than that of the spring a33, the elastic force of the spring c43 overcomes the elastic force of the spring a33, the transmission rod 42 is driven to move away from the dust removal block 32, the transmission rod 42 moves to pull the linkage rod 44 to move synchronously through the connecting rod 45, the dust removal block 32 is pushed through the pushing inclined plane, the dust removal block 32 is located in the dust removal shell 21 and is in contact with the sealing plate 36, the spring a33 is in a compression state, and at this time, dust is wiped by the dust removal block 32 and exhausted through the dust exhaust port;

then, the electromagnet 38 is turned off, and the closing plate 36 is moved down by the elastic force of the spring b37, thereby closing the dust discharge port of the dust removing case 21.

The preferred embodiment, because when testing vacuum pump 10 at every turn, all need to establish the trigger cover outside the output of vacuum pump 10, it is comparatively loaded down with trivial details troublesome, consequently, can install a pivot on test platform, establish the output at the pivot with the trigger cover, when testing the speed to vacuum pump 10, with the output of vacuum pump 10 with the input power of pivot be connected can and both power connect compare the trigger cover establish the output outside of vacuum pump 10 comparatively simple and convenient.

In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed; the modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of the embodiment.

It will also be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.

Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote self-contained vehicular sound collection devices and do not denote any particular order.

Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.

Claims

1. The utility model provides a new energy automobile electron vacuum pump velocity of flow test equipment, includes test platform, test platform is last to install vacuum pump (10), a serial communication port, the inlet end of vacuum pump (10) is provided with rejects component (20), it is used for rejecting dust and the hydrone in the air at vacuum pump (10) in-process to reject component (20), the end of giving vent to anger of rejecting component (20) is provided with velocity of flow sensor (27) that are used for detecting air flow rate, it still is provided with dust removal component (30) on rejecting component (20), dust removal component (30) are used for removing dust to rejecting component (20) after vacuum pump (10) test finishes, be provided with interlock component (40) between the output of dust removal component (30) and vacuum pump (10), interlock component (40) are used for driving about dust removal component (30) to work.

2. The new energy automobile electronic vacuum pump flow rate test device according to claim 1, wherein the rejecting member (20) comprises a dust removing shell (21) installed on the test platform, the dust removing shell (21) is a shell structure with two open ends and arranged horizontally, a connecting pipe a (22) is arranged on one side surface of the dust removing shell (21), a connecting pipe b (23) is arranged on the other side surface of the dust removing shell, a filter plate (24) is arranged at the tail end of the connecting pipe b (23), the tail end of the connecting pipe a (22) is connected and communicated with the air inlet end of the vacuum pump (10), two sets of mesh enclosures (26) are axially arranged in the connecting pipe a (22), the part of the connecting pipe a (22) located between the two sets of mesh enclosures (26) is a drying area, and a drying agent is arranged in the drying area,

the flow rate sensor (27) is arranged on the connecting pipe a (22) and is positioned between the drying area and the air inlet end of the vacuum pump (10);

the dust removing device is characterized in that the dust removing shell (21) is internally provided with two groups of collecting electrode plates (25), the two groups of collecting electrode plates (25) are respectively positioned on the upper cavity wall and the lower cavity wall of the dust removing shell (21), and an electrostatic field for adsorbing dust is formed between the two groups of collecting electrode plates (25).

3. The new energy automobile electronic vacuum pump flow rate test device as claimed in claim 2, wherein one open end of the dust removing shell (21) is a dust exhaust port, and the other open end of the dust removing shell is a cleaning port, and the dust removing member (30) comprises a closing plate piece arranged at the dust exhaust port of the dust removing shell (21) and used for opening or closing the dust exhaust port, and a dust removing piece arranged at the cleaning port of the dust removing shell (21) and used for performing surface dust cleaning treatment on the dust collecting electrode plates (25).

4. The new energy automobile electronic vacuum pump flow rate testing device as claimed in claim 3, wherein a bracket (34) is arranged on an upper end surface of the dust removing shell (21), the sealing plate comprises a guide rod b (35) vertically slidably mounted on the bracket (34), a limit nut is arranged at a top end of the guide rod b (35), a sealing plate (36) is arranged at a bottom end of the guide rod b, and in an initial state, the sealing plate (36) closes a dust exhaust port of the dust removing shell (21);

the spring b (37) positioned between the sealing plate (36) and the bracket (34) is sleeved outside the guide rod b (35), the bracket (34) is provided with an electromagnet (38), and the upper end face of the sealing plate (36) is provided with a magnet (39).

5. The new energy automobile electronic vacuum pump flow rate test device as claimed in claim 4, wherein the dust removing member comprises a guide rod a (31) vertically arranged at the cleaning opening of the dust removing shell (21), a dust removing block (32) is slidably connected to the outside of the guide rod a (31), the upper end surface of the dust removing block (32) and the upper collecting electrode plate (25) are located in the same horizontal plane, and the lower end surface of the dust removing block (32) and the lower collecting electrode plate (25) are located in the same horizontal plane;

the outer part of the guide rod a (31) is sleeved with a spring a (33) for driving the dust removal block (32) to move away from the sealing plate part, and in an initial state, the linkage component (40) overcomes the elastic force of the spring a (33) to enable the dust removal block (32) to be located in the dust removal shell (21) and to be in contact with the sealing plate (36).

6. The new energy automobile electronic vacuum pump flow rate test device as claimed in claim 5, wherein the linkage member (40) is disposed between the vacuum pump (10) and the dust removal block (32), the linkage member (40) includes a trigger and a linkage, the linkage is configured to overcome the elastic force of the spring a (33) to push the dust removal block (32) into the dust removal housing (21) and contact the sealing plate (36), and the trigger is configured to pull the linkage to cancel the pushing of the dust removal block (32) during the operation of the vacuum pump (10).

7. The new energy automobile electronic vacuum pump flow rate test device as claimed in claim 6, wherein the linkage comprises a slide rod (41) horizontally installed on the test platform and having a guiding direction perpendicular to the extending direction of the inner cavity of the dust removal housing (21), the outside of the slide rod (41) is slidably connected with a transmission rod (42), a spring c (43) for driving the transmission rod (42) to move away from the dust removal block (32) is sleeved outside the slide rod (41), and the elastic coefficient of the spring c (43) is greater than that of the spring a (33);

the linkage piece further comprises a linkage rod (44) positioned on one side, away from the vacuum pump (10), of the dust removal block (32), the surface, facing the dust removal block (32), of the linkage rod (44) is a squeezing inclined plane, the squeezing inclined plane is in contact with the dust removal block (32), and the distance between the squeezing inclined plane and the dust removal block (32) is gradually increased along the extension direction of the inner cavity of the dust removal shell (21) and in the direction from the dust removal port to the dust removal port;

the transmission rod (42) is connected with the linkage rod (44) through a connecting rod (45).

8. The new energy automobile electronic vacuum pump flow rate testing device is characterized in that the trigger part is installed at the output end of the vacuum pump (10), the contact part comprises a sleeve ring (46) coaxially sleeved at the output end of the vacuum pump (10), centrifugal parts are arranged on the outer circumferential surface of the sleeve ring (46), and multiple groups of centrifugal parts are arranged in an array along the circumferential direction of the sleeve ring (46);

the centrifugal piece comprises a barrel shell (47), one end of the barrel shell (47) is closed and connected with a lantern ring (46), the other end of the barrel shell is open and provided with a limiting step, a centrifugal rod (48) is arranged in the barrel shell (47) in a sliding mode, one end of the centrifugal rod (48) is provided with a sliding step, the sliding step and the inner cavity of the barrel shell (47) form a sliding guide fit, the other end of the centrifugal rod (48) penetrates through the limiting step and extends out of the barrel shell (47), the centrifugal ball is arranged at the end of the centrifugal rod, the centrifugal ball is in contact with a transmission rod (42), and a spring d (49) located between the sliding step and the limiting step is sleeved on the outer portion of the centrifugal rod (48).

9. The new energy automobile electronic vacuum pump flow rate test equipment as claimed in claim 6, wherein a rotating shaft is mounted on the test platform, the trigger is sleeved at an output end of the rotating shaft, and an output end of the vacuum pump (10) is in detachable power connection with an input end of the rotating shaft.