CN218434899U

CN218434899U - Oil gas recovery pump cable connection structure and oil gas recovery pump and tanker aircraft

Info

Publication number: CN218434899U
Application number: CN202222196893.4U
Authority: CN
Inventors: 林喜彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-02-03
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses an oil gas recovery pump cable connection structure and oil gas recovery pump and tanker aircraft, the utility model discloses the scheme ingeniously through setting the connecting cable of driving motor to independent demountable installation's first cable and second cable for when breaking down with commercial power or other external power supply and controlling means connection's second cable, can conveniently remove the connection between first cable and the second cable, and need not the degree of depth again and dismantle the motor, this cable connection structure can make things convenient for the cable external connection cable of driving motor to change greatly, improves external connection cable (second cable) fault maintenance efficiency; in addition, on the structure of the roller of the oil gas recovery pump, the magnetic column assembly and the third shell are introduced to be packaged ingeniously, so that a radial repulsive force is formed between the rollers, the reliability of the attachment of the roller and the inner wall of the second shell is improved, the device is more reliable to use, stronger in durability, good in working performance continuity and guaranteed in service life.

Description

Oil gas recovery pump cable connection structure and oil gas recovery pump and tanker aircraft

Technical Field

The utility model relates to a cable connection structure, pump machine structure and vapor recovery pump technical field especially relate to vapor recovery pump cable connection structure and vapor recovery pump and tanker aircraft.

Background

The oil gas recovery of the oiling machine is taken as an energy-saving and environment-friendly subject of the oiling equipment which is hot at present, an oil gas recovery pipeline is arranged on an oil gun of the oiling machine, oil gas generated during oiling is absorbed and recovered by combining a negative pressure device, so that the oil gas overflow during oiling of the oiling gun is avoided, the air cleanliness of a gas station can be effectively improved on one hand, the potential safety hazard of large amount of oil gas dissipation can be eliminated on the other hand, and the loss of available energy is reduced, the oil gas recovery of the oiling machine mainly depends on the work of an oil gas recovery pump to provide reliable negative pressure, and the oil gas recovery pump is designed into a small size, so that the oil gas recovery pump is mostly installed in a relatively compact space, the work of the pump machine depends on external power supply and control signal access, and during long-term work, the work may stop due to cable failure, at the moment, the cable of the pump needs to be replaced, the traditional cable connection of the pump is mostly in a direct single-cable connection mode, when the cable is replaced, the pump needs to be deeply disassembled to install wires on the cable in one strand, under the condition, the work difficulty of replacing the cable is increased, time is consumed, equipment damage is easy to occur in the disassembling and assembling process, meanwhile, the process of returning the oiling machine to use is delayed, in addition, some pumps sold in the market at present can penetrate through explosion-proof pipes on the cable, the connection mode of the explosion-proof pipes is single, after the pumps are installed, certain inconvenience is caused in disassembling, the efficiency of replacing the cable with the pump failure is improved, and guarantee is provided for quick work recovery of the pump.

Besides, most of oil gas recovery pumps sold in the market at present have complex transmission structures, after the oil gas recovery pumps work for a long time, the equipment is often required to be maintained or replaced due to abrasion of parts, the traditional oil gas recovery pumps are complex in structure, and need complex matching work during installation, so that the installation efficiency of the equipment is influenced to a certain extent, the transmission structures of the traditional oil gas recovery pumps are easy to cause obvious negative pressure performance attenuation due to abrasion, therefore, the part structures of the oil gas recovery pumps are optimized, the working reliability and the stability are guaranteed, and the installation and disassembly efficiency is improved.

Disclosure of Invention

In view of this, the utility model aims at providing a dismouting is convenient and simple structure, with low costs and implement reliable vapor recovery pump cable connection structure and vapor recovery pump and tanker aircraft.

In order to realize the technical purpose, the utility model adopts the technical scheme that:

the utility model provides an oil gas recovery pump cable connection structure is connected and is used for the switch on with the driving motor of oil gas recovery pump, driving motor installs in first casing, the lower part of first casing is equipped with holding chamber and its bottom and is open structure, the bottom releasable connection of first casing has the bottom, the driving motor electricity is connected with first cable, and the holding intracavity is located to this first cable, and it has the first wire of stranded (a stranded promptly), oil gas recovery pump cable connection structure includes:

one end of the second cable penetrates into the accommodating cavity and is provided with a plurality of strands of second conducting wires which are in one-to-one correspondence with the first conducting wires, and the plurality of strands of second conducting wires are detachably connected with the plurality of strands of first conducting wires of the first cable in one-to-one correspondence through the wiring assembly;

the first connecting sleeve is a rigid tubular structure with external thread structures at two ends, one end of the first connecting sleeve is in threaded connection with the lower part of the first shell and is communicated with the accommodating cavity, and the other end of the first connecting sleeve vertically extends upwards;

the second connecting sleeve is a flexible connecting pipe, one end of the second connecting sleeve is provided with an internal thread structure and is in threaded connection with the other end of the first connecting sleeve, and the other end of the second cable sequentially penetrates through the first connecting sleeve and the second connecting sleeve to lead out the accommodating cavity and is used for being connected with an external power supply.

As a possible implementation manner, further, the wiring assembly in this scheme includes a first connector and a second connector, wherein the other end of the first cable is connected to the first connector, the first connector is provided with a plurality of connecting plates arranged at intervals, one side of the connecting plate is provided with a first conductive sheet, and a plurality of strands of first wires at the other end of the first cable are in one-to-one correspondence with and connected to the first conductive sheet; one end of the second cable is connected with the second connector, a connecting groove in one-to-one correspondence with the connecting plate on the first connector is arranged on the second connector, the second connector is detachably connected with the connecting plate of the first connector in an inserting mode through the connecting groove, a second conducting strip in one-to-one correspondence with the first conducting strip is arranged on one side of the connecting groove, and multiple strands of second wires at the other end of the second cable are in one-to-one correspondence with the second conducting strip and connected with the second conducting strip.

As a preferred implementation option, preferably, in this scheme the lower part of the first casing is correspondingly provided with a connecting portion matched with the first connecting sleeve, the connecting portion is provided with a connecting hole matched with one end of the first connecting sleeve, the upper end of the connecting hole is provided with an internal thread structure in threaded connection with one end of the first connecting sleeve, the connecting hole is further communicated with the accommodating cavity, the other end of the second cable penetrates through the connecting hole and the first connecting sleeve according to a sequence, and an explosion-proof ring is further sleeved on a portion of the second cable located in the connecting hole.

Based on above-mentioned cable connection structure, the utility model also provides an oil vapor recovery pump, its connection just is used for providing the required negative pressure of vapor recovery in the vapor recovery pipeline of tanker aircraft, and it includes the aforesaid vapor recovery pump cable connection structure.

As a preferred implementation choice, the scheme further includes:

the base is arranged on the upper end face of the first shell and is relatively and fixedly connected with the first shell;

the second shell is of a cylindrical structure with open upper and lower ends, and the lower end face of the second shell is fixed on the upper end face of the base;

the rotor is eccentrically arranged in the second shell, the lower end face of the rotor is attached to the upper end face of the base or a gap with the distance smaller than a preset value is formed, a first area and a second area which are communicated with each other are formed on two sides of the position with the maximum distance between the rotor and the inner wall of the second shell, and a plurality of arc-shaped movable grooves extending in the radial direction are formed in the peripheral side of the rotor;

the rollers are in a cylindrical structure, the number of the rollers is multiple, the rollers correspond to the arc-shaped movable grooves on the rotor one by one and are movably arranged in the arc-shaped movable grooves;

the connecting seat is fixedly connected with the upper end face of the second shell, a pair of air guide grooves which are oppositely arranged and are communicated with the first area and the second area in a one-to-one correspondence mode are formed in the end face, close to the second shell, of the connecting seat, and the upper end face of the rotor is attached to the lower end face of the connecting seat or a gap with the distance smaller than a preset value is formed between the upper end face of the rotor and the lower end face of the connecting seat;

the connecting joints are in a pair and are connected with the air guide grooves in a one-to-one correspondence manner;

the driving shaft of the driving motor rotatably penetrates through the first shell and the base and is fixedly connected with the rotor, the driving motor drives the rotor to rotate, the roller in the arc-shaped movable groove on the rotor rotates along with the rotor and is attached to the inner side wall of the second shell under the action of centrifugal force, gas in the first area is pushed to the second area and is output by the gas guide groove and the connecting joint corresponding to the second area, negative pressure is generated in the first area, or the gas in the second area is pushed to the first area and is output by the gas guide groove and the connecting joint corresponding to the first area, and negative pressure is generated in the second area.

As a preferred implementation choice, preferably, the present solution further includes a first gasket, the first gasket is fixedly disposed between the lower end face of the second casing and the upper end face of the base, the middle portion of the upper end face of the base is further provided with a buffer sinking groove corresponding to the profile of the rotor, and the depth of the buffer sinking groove is 0.02-3 mm.

As a preferred implementation option, the roller of the present invention preferably includes:

the third shell is of a tubular structure with one open end, and the open end of the third shell is provided with an internal thread structure;

the magnetic columns are in a pair in number and are axially and oppositely arranged in the third shell in a penetrating way, and the ends of the magnetic columns are opposite in opposite magnetic poles;

and the connecting cover is in threaded connection with the open end of the third shell, and the magnetic column is packaged in the third shell.

As a preferred implementation choice, preferably, the end portions of the magnetic pillars that are far away from each other are sleeved with a metal flux sleeve, and the metal flux sleeve may be formed by an iron material.

As a better implementation choice, preferably, the scheme further comprises a heat radiation sleeve, the heat radiation sleeve is fixedly sleeved on the outer peripheral side of the second shell, the lower part of the outer peripheral side of the second shell is provided with a lap joint part with an annular structure, the lower end of the heat radiation sleeve is abutted against the lap joint part, and the lower end of the heat radiation sleeve does not exceed the lower end face of the first shell;

the edge of the upper end face of the connecting seat penetrates through the connecting seat through a plurality of first bolt threads and is locked with the threads at the upper end of the heat dissipation sleeve;

the edge of the lower end face of the base penetrates through the base through a plurality of second bolt threads and is locked with the threads at the lower end of the heat dissipation sleeve, and the first shell is indirectly clamped and fixed between the connecting seat and the base.

As a better implementation choice, preferably, this scheme the connecting seat is equipped with the extension on keeping away from the terminal surface of second casing, and this extension is equipped with a pair of interface that penetrates in the air guide groove with the air guide groove one-to-one, and a pair of attach fitting and a pair of interface one-to-one and one end are pegged graft and are fixed in the interface, still be equipped with the fire stopping collar between interface bottom and the air guide groove.

As a better implementation choice, preferably, in this scheme the up end and the lower terminal surface of second casing all are equipped with first O type sealing washer, the connector is pegged graft and is fixed and be equipped with second O type sealing washer on the intraoral tip of grafting.

As a better implementation option, preferably, in the present scheme, the base is correspondingly provided with a penetrating hole through which a driving shaft of the driving motor passes, the penetrating hole is further provided with an oil seal matched with the driving shaft of the dc brushless driving motor, the penetrating hole is further provided with a bearing matched with the driving shaft, an outer ring of the bearing is fixedly connected with the penetrating hole, and a jump stopping snap spring is further arranged below the driving shaft corresponding to the bearing.

Based on above-mentioned vapor recovery pump structure, the utility model discloses still provide an oiling machine, it includes the aforesaid vapor recovery pump.

Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: the utility model discloses scheme ingeniously through setting the connecting cable of driving motor into independent demountable installation's first cable and second cable, and this comes demountable installation through the wiring subassembly, when making the second cable that is connected with commercial power or other external power supply and controlling means break down, can make things convenient for after dismantling the bottom of first casing, remove the connection between first cable and the second cable, and need not to dismantle the motor again and share the wire on the installation cable deeply, only need through the first cable of being connected new second cable and driving motor through the wiring subassembly reinstallation, rethread first adapter sleeve, the change of second cable can be accomplished through drawing forth of second adapter sleeve, this cable connection structure can make things convenient for driving motor's the external cable of cable to change greatly, improve external cable (second cable) trouble maintenance efficiency, when direct current brushless driving motor or oil gas recovery pump break down, also can be through the connection of contact wiring subassembly, come to dismantle driving motor or oil gas recovery pump alone, thereby need not to carry out the dismouting to the second cable, the flexibility of maintenance is improved; in addition, the scheme also comprises that a base and a connecting seat are matched with the upper end and the lower end of a second shell to form a relatively sealed cavity inside the second shell, an air guide groove is correspondingly arranged on the connecting seat, an extending part on the connecting seat is matched to connect a connecting joint for oil gas input and output, a rotor is ingeniously eccentrically arranged in the second shell, and an arc-shaped movable groove is arranged on the rotor to movably arrange a roller, so that when a driving motor is used as a power unit to drive the rotor to rotate, the roller can push air in the second shell to transfer and simultaneously form negative pressure in the second shell, the connecting joint used as an input end sucks oil gas into the second shell and outputs the oil gas in a one-way manner from the connecting joint used as an output end, and in the structure of the roller, magnetic column assembly is ingeniously introduced to be packaged in a third shell, make and form radial repulsion force between the roller, improve roller and second shells inner wall's laminating reliability, rotor during operation's heat production problem is still considered in this scheme, through set up the durability of first gasket in order to improve the rotor at second casing lower extreme, and simultaneously, base up end middle part still corresponds the rotor profile and is equipped with the heavy groove of buffering, through the setting of the heavy groove of buffering, can make the rotor when being heated, the effort that its self inflation produced promotes first gasket and takes place deformation, make it warp along the heavy groove direction of buffering, make the cooperation space increase of rotor, avoid the rotor when being heated, cause too big friction interference to first gasket, make the durability of the device of this scheme stronger, the working property continuity is good, life obtains effective assurance.

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 these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of a schematic structure of an embodiment of the present invention;

fig. 3 is a schematic bottom view of an embodiment of the present invention, wherein the bottom cover of the first housing is hidden;

FIG. 4 is an enlarged view of a portion of the structure at A in FIG. 3;

fig. 5 is a schematic view of a simple cutting view of an embodiment of the present invention;

fig. 6 is a schematic diagram of a state before a first cable and a second cable on a driving motor are installed through a wiring assembly according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a wiring cooperation principle of the wiring assembly proposed in the embodiment of the present invention;

FIG. 8 is a schematic view of a prior art wiring assembly;

FIG. 9 is a schematic illustration of the prior art wiring assembly of FIG. 8 in use in the inventive arrangements;

fig. 10 is a schematic top view of an embodiment of the present invention;

FIG. 11 isbase:Sub>A sectional view taken at A-A in FIG. 10;

FIG. 12 is an enlarged view of a portion of the structure at B in FIG. 11;

fig. 13 is one of the schematic exploded views of a schematic structural part of an embodiment of the present invention;

fig. 14 is a schematic exploded view of a part of the structure of an embodiment of the present invention;

fig. 15 is a schematic two-dimensional state diagram of the rotor, rollers and second housing in accordance with an embodiment of the present invention, with some parts hidden and not shown;

fig. 16 is a schematic three-dimensional state diagram of the rotor, rollers and second housing in accordance with an embodiment of the present invention, with some parts hidden and not shown;

FIG. 17 is a schematic exploded view of the structure shown in FIG. 16, with portions of the components hidden and not shown;

fig. 18 is an exploded view of one of the roller structures according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only some but not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

As shown in one of fig. 1 to 7, an oil vapor recovery pump cable connection structure according to an embodiment of the present invention is connected to a driving motor 1 (which may be a dc brushless motor) of an oil vapor recovery pump and used for connecting a power supply, the driving motor 1 is installed in a first housing 2, a receiving cavity 22 is formed in a lower portion of the first housing 2, a bottom of the first housing 2 is an open structure, a bottom cover 21 is detachably connected to a bottom of the first housing 2, the driving motor 1 is electrically connected to a first cable 11, the first cable 11 is installed in the receiving cavity 22 and has a plurality of first wires 1101, and the oil vapor recovery pump cable connection structure includes:

a second cable 3, one end of which penetrates into the accommodating cavity 22 and is provided with a plurality of strands of second conducting wires 301 corresponding to the first conducting wires 1101 one by one, wherein one end of the second cable 3 connects the plurality of strands of second conducting wires 301 with the plurality of strands of first conducting wires 1101 of the first cable in a detachable one-to-one correspondence manner through a wiring assembly 33;

the first connecting sleeve 31 is a rigid tubular structure with external thread structures at two ends, one end of the first connecting sleeve is in threaded connection with the lower part of the first shell 2 and communicated to the accommodating cavity 22, and the other end of the first connecting sleeve extends vertically upwards;

the second connecting sleeve 32 is a flexible connecting pipe (which may be an explosion-proof pipe), one end of the second connecting sleeve has an internal thread structure and is in threaded connection with the other end of the first connecting sleeve 31, and the other end of the second cable 3 sequentially passes through the first connecting sleeve 31 and the second connecting sleeve 32 to be led out of the accommodating cavity 22 and is used for being connected with an external power supply or a control device.

In order to conveniently disassemble and assemble the first cable 11 and the second cable 3, the wiring assembly 33 of the present disclosure includes a first connector 331 and a second connector 332, wherein the other end of the first cable 11 is connected to the first connector 331, a plurality of connection plates 3311 arranged at intervals are disposed on the first connector 331, a first conductive plate 3312 is disposed on one side of the connection plate 3311, and a plurality of first wires 1101 at the other end of the first cable 11 are in one-to-one correspondence with and connected to the first conductive plates 3312; one end of the second cable 3 is connected to the second connector 332, a connection groove 3321 corresponding to the connection plate 3311 of the first connector 331 one to one is formed in the second connector 332, the second connector 332 is detachably connected to the connection plate 3311 of the first connector 331 through the connection groove 3321 in an inserting manner, a second conductive sheet 3322 corresponding to the first conductive sheet 3312 one to one is formed on one side of the connection groove 3321, and the plurality of second wires 301 at the other end of the second cable 3 are corresponding to and connected to the second conductive sheet 3322 one to one.

After the second cable 3 and the first cable 11 are installed in a butt joint manner, in a using process, there may be abnormal problems such as peeling and breaking of a portion where the second cable 3 penetrates into the accommodating cavity 22 and loosening of a connection relationship between the first cable 11 and the second cable 3 due to the fact that the second cable 3 is dragged, and as a better implementation choice, preferably, in the present embodiment, the lower portion of the first housing 2 is correspondingly provided with a connecting portion 221 matched with the first connecting sleeve 31, the connecting portion 221 is provided with a connecting hole 23 matched with one end of the first connecting sleeve 31, the upper end of the connecting hole 23 is provided with an internal thread structure in threaded connection with one end of the first connecting sleeve 31, the connecting hole 23 is further communicated with the accommodating cavity 22, the other end of the second cable 3 sequentially penetrates through the connecting hole 23 and the first connecting sleeve 31, and the portion, located in the connecting hole 23, of the second cable 3 is further sleeved with an explosion-proof ring 34.

Under this structure, owing to have the traction of first adapter sleeve 31 and second adapter sleeve 32, can make the part that second cable 3 is close first cable 11 be in comparatively stable guard state, and simultaneously, the vertical drawing of second cable 3 has also made things convenient for driving motor 1 to install when the tanker aircraft lower part, can avoid the part that second cable 3 is close first cable 11 to appear subaerial scraping scheduling problem.

In addition to the above-mentioned structure of the wiring assembly, in combination with fig. 8 or fig. 9, the solution of the present embodiment can also directly use a commercially available small-volume wire quick-connection assembly to connect the first cable and the second cable, which is not limited to the foregoing structure.

Through the structure, when the second cable 3 breaks down and needs to be replaced, a maintainer only needs to disassemble the bottom cover 21, then directly removes the connection relationship between the first joint 331 and the second joint 332, so that the second cable 3 with the fault is removed, then sequentially detaches the first connecting sleeve 31 and the second connecting sleeve 32, so that the second cable 3 with the fault is taken out and detached and removed, then installs the newly replaced second cable 33 which is connected with the second connector 332 in advance, sequentially leads out the other end of the second cable 33 from the connecting hole 23, then installs the explosion-proof ring 34 on the second cable 3, sequentially penetrates the other end of the second cable 3 through the first connecting sleeve 31 and the second connecting sleeve 32 which are connected in advance, and finally, threadedly connects one end of the first connecting sleeve 31 with the connecting hole 23, so that the first cable 3 is installed in place, and the explosion-proof ring 34 is installed in place.

On the basis of the structure shown in one of fig. 1 to 9, further with reference to fig. 11 to 18, based on the cable connection structure, the present embodiment further provides an oil and gas recovery pump connected in an oil and gas recovery pipeline of a fuel dispenser and used for providing negative pressure required for oil and gas recovery, and on the basis of the structure, the present embodiment further includes:

the base 4 is arranged on the upper end face of the first shell 2 and is relatively and fixedly connected with the first shell;

the second shell 5 is a cylindrical structure with open upper and lower ends, and the lower end face of the second shell is fixed on the upper end face of the base 4;

the rotor 6 is eccentrically arranged in the second shell 5, the lower end face of the rotor is attached to the upper end face of the base 4 or a gap with a distance smaller than a preset value is formed, a first area 52 and a second area 53 which are communicated with each other are formed on two sides of the maximum distance position of the inner wall of the rotor 6 and the inner wall of the second shell 5, and a plurality of arc-shaped movable grooves 61 which extend in the radial direction are arranged on the peripheral side of the rotor 6, wherein the rotor can be made of stainless steel or other hard metals;

the rollers 7 are cylindrical, the number of the rollers is multiple, the rollers correspond to the arc-shaped movable grooves 61 on the rotor 6 one by one and are movably arranged in the arc-shaped movable grooves 61, the part, close to the radial center of the rotor 6, of each arc-shaped movable groove 61 is of a semicircular structure matched with the outer diameter of each roller 7, and the distance between the side walls of the part, far away from the radial center of the rotor 6, of each roller is 1.005-1.1 times of the diameter of each roller 7.

The connecting seat 8 is fixedly connected with the upper end face of the second shell 5, a pair of air guide grooves 84 which are oppositely arranged and are communicated with the first area 52 and the second area 53 in a one-to-one correspondence mode are arranged on the end face, close to the second shell 5, of the connecting seat 8, and the upper end face of the rotor 6 is attached to the lower end face of the connecting seat 8 or a gap with the distance smaller than a preset value is formed between the upper end face and the lower end face of the connecting seat 8;

the connecting joints 9 are a pair and are connected with the air guide grooves 84 in a one-to-one correspondence manner;

wherein, the driving shaft 12 of the driving motor 1 rotatably passes through the first housing 2 and the base 4 and is fixedly connected with the rotor 6 (which may be connected by a key or locked by a latch), the dc brushless driving motor 1 drives the rotor 6 to rotate, so that the rollers 7 in the arc-shaped movable groove 61 on the rotor 6 have the same magnetic repulsion effect and rotate with the same magnetic repulsion effect, and tightly adhere to the inner side wall of the second housing 5 under the centrifugal force effect, so that the gas in the first region 52 is pushed to the second region 53 and is output by the gas guide groove 84 and the connection joint 9 corresponding to the second region 53, and the negative pressure is generated in the first region 52 or the gas in the second region 53 is pushed to the first region 52 and is output by the gas guide groove 84 and the connection joint 9 corresponding to the first region 52, so that the negative pressure is generated in the second region 53; taking fig. 16 as an example, if the driving motor 1 drives the rotor 6 to rotate clockwise, the gas in the second region 53 is pushed to the first region 52, and since the volume of the space formed between the rollers 7 is reduced when the balls 7 move along with the rotor 6 in the first region 52, the gas in the first region is pushed into the gas guide groove 84 and the connecting joint 9 corresponding to the first region 52 for output, at this time, the connecting joint 9 corresponding to the first region 52 can be set as an output joint, and the gas in the second region 53 is pushed to the first region 52, at this time, the second region 53 forms a negative pressure, so as to pull the gas guide groove 84 and the connecting joint 9 corresponding to the second region 53 to attract the oil gas negative pressure to the second region 53, at this time, the connecting joint 9 corresponding to the second region 53 can be set as an input joint.

The scheme also comprises a first gasket 54, the first gasket 54 is fixedly arranged between the lower end face of the second shell 5 and the upper end face of the base 4, when the rotor 6 is driven to rotate by the driving motor 1, the gas in the second shell 5 can be compressed, and meanwhile, a certain friction force can be generated when the rotor 6 works to drive the roller 7 to contact with the inner wall of the second shell 5, so that a large amount of heat can be generated in the second shell 5 when the device works, because the device forms relatively precise assembly to a certain extent when being assembled, and the rotor 6 expands after being heated, at this time, if the device continues to work, the contact friction force between the rotor 6 and the first gasket 54 can be improved, so that the working resistance is increased, and meanwhile, the matching abrasion can be intensified, therefore, in the scheme, the middle part of the upper end face of the base 4 is also provided with a buffer sinking groove 41 corresponding to the outline of the rotor 6, as a size example, the depth of the buffer sinking groove 51 is 0.02-3 mm, but the scheme is not limited to the size, and through the arrangement of the buffer sinking groove 41, when the rotor 6 is heated, the acting force generated by the expansion of the rotor 6 can push the first gasket 54 to deform, so that the first gasket is deformed along the direction of the buffer sinking groove 41, the matching space of the rotor 6 is increased, and the rotor 6 is prevented from causing excessive friction interference to the first gasket 54 when being heated, if the friction interference is too large, the matching gap can be further enlarged after a cold machine, so that the negative pressure forming capability is influenced, and meanwhile, the scheme structure can also improve the service lives of the first gasket 54 and the rotor 6 and improve the work output efficiency of the driving motor 1; first gasket 54 adopts the wear-resisting gasket of elasticity, in addition, also can improve the cooperation reliability of rotor 6 up end and connecting seat 8 up end through setting up the second gasket that is similar to first gasket 54 between the up end of connecting seat 8 and rotor 6, and the second gasket structurally need be equipped with the mouth of dodging that adapts to with air guide groove 84.

Because the driving motor 1 drives the roller 7 to be attached to the inner wall of the second shell 5 by centrifugal force when working, in order to improve the attaching reliability of the roller 7 to the inner wall of the second shell 5, the roller 7 comprises:

a third housing 71 having a tubular structure with an open end, wherein the open end is provided with an internal thread structure;

the magnetic columns 72 are paired and axially oppositely penetrate through the third shell 71, and the ends of the magnetic columns 72 are opposite in opposite magnetic poles; preferably, the end portions of the magnetic pillars 72 far away from each other are sleeved with a metal flux sleeve 74, and the metal flux sleeve 74 may be formed by an iron material;

and a connection cap 73 screwed to the open end of the third housing 7 to enclose the magnetic cylinder 72 in the third housing 71.

In this structure, since the magnetic columns 72 in all the rollers 7 are opposite in like magnetic poles at the same position, they generate a magnetic repulsive force, so that the magnetic columns 72 are forced in a direction away from the radial center, and the rollers 7 are kept in contact with the inner wall of the second housing 5 by the centrifugal force of the rotor 6, thereby improving the negative pressure productivity.

In order to avoid damage to parts caused by overheating during operation, the heat dissipation sleeve 51 is further included, the heat dissipation sleeve 51 is fixedly sleeved on the outer peripheral side of the second shell 5, the lower portion of the outer peripheral side of the second shell 5 is provided with a lap joint portion 56 of an annular structure, the lower end of the heat dissipation sleeve 51 abuts against the lap joint portion 56, and the lower end of the heat dissipation sleeve does not exceed the lower end face of the first shell 2.

In structural installation, the edge of the upper end face of the connecting seat 8 penetrates through the connecting seat 8 through a plurality of first bolts 83 in a threaded manner and is locked with the upper end threads of the heat dissipation sleeve 51; the edge of the lower end face of the base 4 passes through the base 4 through the threads of a plurality of second bolts 42 and is locked with the threads of the lower end of the heat dissipation sleeve 51, so that the first shell 2 is indirectly clamped and fixed between the connecting seat 8 and the base 4.

In order to improve the safety and the sealing performance of the air inlet and the air outlet, as a better implementation choice, preferably, an extension part 82 is arranged on the end surface of the connecting seat 8 far away from the second shell 5, the extension part 82 is provided with a pair of insertion ports 81 which correspond to the air guide grooves 84 one by one and penetrate into the air guide grooves 84, a pair of connecting joints 9 corresponds to the pair of insertion ports 81 one by one, one ends of the connecting joints are inserted and fixed in the insertion ports, and a fire stopping ring 92 is further arranged between the bottom of the insertion ports and the air guide grooves 84; in addition, in the scheme, the upper end surface and the lower end surface of the second shell 5 are both provided with first O-shaped sealing rings 55, and the end part of the connecting joint 9 which is inserted and fixed in the inserting port is provided with a second O-shaped sealing ring 91; in addition, in order to improve the installation reliability of the connection joint 9, the connection joint 9 may be fixedly installed in the insertion opening 81 by an auxiliary installation plate 93 in cooperation with the locking bolt 85.

In the connection transition of the driving motor 1 and the rotor 6, the base 4 is correspondingly provided with a penetrating hole 43 through which the driving shaft 12 of the driving motor 1 penetrates, the penetrating hole 43 is further provided with an oil seal 13 matched with the driving shaft 12 of the driving motor 1, the penetrating hole 43 is further provided with a bearing 14 matched with the driving shaft 12, the outer ring of the bearing 14 is fixedly connected with the penetrating hole 43, and a fleeing-preventing snap spring 141 is further arranged below the driving shaft 12 corresponding to the bearing 14.

When the oil-gas recovery pump adopting the scheme is applied, only one connector of the connecting connector 9 is connected to an oil-gas output pipe of the fuel dispenser, the connecting connector 9 is set as an input connector (if the driving motor rotates clockwise as shown in fig. 16, the corresponding inner area of the second shell 5 is the second area 53), the other connecting connector 9 is connected to an oil-gas recovery pipe of the fuel dispenser, the pipe is connected to a device for storing oil gas, meanwhile, the connecting connector 9 is set as an output connector (the corresponding inner area of the second shell 5 is the first area 52), when the device of the scheme works, the driving motor 1 is used as a power unit to drive the rotor 6, the rotor 6 rotates clockwise as shown in fig. 16, so that gas in the second area 53 is pushed to the first area 52 and is output by the gas guide groove 84 corresponding to the first area 52 and the connecting connector 9 (namely the output connector), negative pressure is generated in the second area 53, and then gas is carried out on the oil-gas recovery pipe of the fuel dispenser through the input connector, so that oil-gas recovery pipe in the fuel gun is recovered and sucked.

The above only is the partial embodiment of the present invention, and not therefore the scope of protection of the present invention is limited, all the equivalent devices or equivalent processes made by the contents of the specification and the attached drawings are utilized, or directly or indirectly applied to other related technical fields, and all the same principles are included in the scope of protection of the patent of the present invention.

Claims

1. The utility model provides an oil gas recovery pump cable connection structure is connected and is used for the switch on with the driving motor of oil gas recovery pump, driving motor installs in first casing, the lower part of first casing is equipped with holding chamber and its bottom and is open structure, the bottom releasable connection of first casing has the bottom, the driving motor electricity is connected with first cable, and the holding intracavity is located to this first cable, and it has the first wire of stranded, its characterized in that, oil gas recovery pump cable connection structure includes:

2. The oil and gas recovery pump cable connection structure of claim 1, wherein the wiring assembly comprises a first connector and a second connector, wherein the other end of the first cable is connected with the first connector, the first connector is provided with a plurality of connecting plates arranged at intervals, one side of each connecting plate is provided with a first conducting strip, and a plurality of first wires at the other end of the first cable are in one-to-one correspondence with and connected with the first conducting strips; one end of the second cable is connected with the second connector, a connecting groove in one-to-one correspondence with the upper connecting plate of the first connector is arranged on the second connector, the second connector is detachably connected with the connecting plate of the first connector in an inserting mode through the connecting groove, a second conducting strip in one-to-one correspondence with the first conducting strip is arranged on one side of the connecting groove, and multiple second wires at the other end of the second cable are in one-to-one correspondence with the second conducting strip and connected with the second conducting strip.

3. The cable connection structure for an oil and gas recovery pump according to claim 2, wherein the lower portion of the first housing is correspondingly provided with a connection portion engaged with the first connection sleeve, the connection portion is provided with a connection hole engaged with one end of the first connection sleeve, an internal thread structure threadedly connected with one end of the first connection sleeve is provided at an upper end of the connection hole, the connection hole is further communicated with the accommodation cavity, the other end of the second cable sequentially passes through the connection hole and the first connection sleeve, and an explosion-proof ring is further sleeved on a portion of the second cable located in the connection hole.

4. An oil gas recovery pump connected in an oil gas recovery pipeline of a fuel dispenser and for providing a negative pressure required for oil gas recovery, characterized by comprising the oil gas recovery pump cable connection structure according to any one of claims 1 to 3.

5. The oil and gas recovery pump of claim 4, further comprising:

6. The oil and gas recovery pump according to claim 5, further comprising a first spacer fixedly disposed between the lower end surface of the second casing and the upper end surface of the base, wherein a buffer sink groove is further disposed in the middle of the upper end surface of the base corresponding to the contour of the rotor, and the depth of the buffer sink groove is 0.02-3 mm.

7. The oil and gas recovery pump of claim 5, wherein the rollers comprise:

the connecting cover is in threaded connection with the open end of the third shell and used for packaging the magnetic column in the third shell;

wherein, the end parts of the magnetic columns which are far away from each other are sleeved with metal magnetic conduction sleeves.

8. The oil and gas recovery pump according to claim 5, further comprising a heat radiation sleeve fixedly fitted around an outer peripheral side of the second casing, wherein a lower portion of the outer peripheral side of the second casing is provided with a lap joint portion of an annular structure, a lower end of the heat radiation sleeve abuts against the lap joint portion, and a lower end thereof does not exceed a lower end surface of the first casing;

9. The oil and gas recovery pump of claim 7, wherein the end surface of the connecting seat away from the second casing is provided with an extension part, the extension part is provided with a pair of insertion ports which correspond to the air guide grooves one by one and penetrate into the air guide grooves, a pair of connecting joints correspond to the pair of insertion ports one by one, one end of each connecting joint is inserted and fixed in the insertion ports, and a fire stopping ring is further arranged between the bottom of each insertion port and the air guide groove;

the upper end face and the lower end face of the second shell are respectively provided with a first O-shaped sealing ring, and the end part of the connecting joint, which is inserted and fixed in the inserting port, is provided with a second O-shaped sealing ring;

the base is correspondingly provided with a penetrating hole for the driving shaft of the driving motor to penetrate through, an oil seal matched with the driving shaft of the driving motor is further arranged on the penetrating hole, a bearing matched with the driving shaft is further arranged on the penetrating hole, the outer ring of the bearing is fixedly connected with the penetrating hole, and a fleeing-preventing snap spring is further arranged below the driving shaft corresponding to the bearing.

10. A fuel dispenser, characterized in that it comprises an oil and gas recovery pump according to any one of claims 5 to 9.