CN105570075A

CN105570075A - Energy-saving vacuum-pumping brake-assisting pump

Info

Publication number: CN105570075A
Application number: CN201610082835.5A
Authority: CN
Inventors: 刘孟孟
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-06
Filing date: 2016-02-06
Publication date: 2016-05-11

Abstract

An energy-saving vacuum-pumping brake-assisting pump belongs to the field of vacuum servo of automobile hydraulic braking; an upper magnet and a lower magnet of the energy-saving vacuum-pumping brake-assisting pump are located on an upper surface and a lower surface of the housing of a negative pressure shell, respectively, a protecting shell is fixed on the negative pressure shell, and an air extraction tube is fixed on a lower end of the negative pressure shell; an air outlet valve is fixed in a center hole of the negative pressure shell, and a magnetic piston is arranged in the negative pressure shell; sealing plates seal an air extraction channel of an air extraction cavity, and an air extraction channel of an air squeezing cavity, respectively; a fixed plug is fixed in a plug hole of the magnetic piston, a sealing ball or a sealing cone is mounted in an inner taper hole in the same, and an accommodating hole is formed in a lower end of the magnetic piston. The energy-saving vacuum-pumping brake-assisting pump is compact in structure, low in vibration, high in electric energy utilization rate, strong in power, suitable for mounting and use in a vacuum servo type hydraulic braking electric automobile and internal combustion engine automobile, and capable of normally generating vacuum and realizing vacuum servo even after the internal combustion engine automobile stops running; moreover, such a pump is favorable in industrialization market prospect, high in commercial value, and convenient to both manufacture and use.

Description

Extracting vacuum brake boost energy-saving pump

Technical field

The present invention relates to a kind of extracting vacuum brake boost energy-saving pump for producing vacuum power to the vacuum booster of the brake master cylinder of automobile.

Background technique

The vacuum pump that traditional automobile uses adopts bias to lay eggs formula, lays eggs to produce suction when rotated and carry out bleeding and vacuum.

Summary of the invention

The object that the present invention relates to is to provide a kind of electromagnetic linear to pull piston movement to bleed and the manufacture of vacuum extracting vacuum brake boost energy-saving pump and method thereof.

For achieving the above object, extracting vacuum brake boost energy-saving pump of the present invention mainly comprises protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, sealing plate, ball sealer or sealing cone, limits cap, answers magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller, electronic remote controller;

Or described extracting vacuum brake boost energy-saving pump mainly comprises protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, sealing plate, ball sealer or sealing cone, limits cap, answers magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller.

In protecting crust, be provided with upper magnet and lower magnet, upper magnet is fixed on the upper part outside negative pressure shell, and lower magnet is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the outside protection upper magnet of negative pressure shell and the coil of lower magnet; Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile.

Connect upper magnet to be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receiver of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust; Or connect upper magnet and be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.

Be provided with in negative pressure shell sealing plate, limit cap, answer magnetic piston, fixed plug, can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; Be provided with sealing plate in closed hole in the sealing neck of the lower end in negative pressure shell, restriction cap is fixed on the outside of sealing neck by screw thread or jump ring, and when restriction cap is in the receiving bore of answering the lower end of magnetic piston upwards to cave in, restriction cap and receiving bore have gap; Sealing plate coordinates with the closed hole in sealing neck and can seal or open the passage of bleeding of the pumping chamber entered in negative pressure shell; When answering magnetic piston stroking upward, the inner chamber part of answering the negative pressure shell of magnetic piston lower part is pumping chamber; When answering magnetic descent of piston, the inner chamber part of the negative pressure shell of magnetic piston upper part is answered to be squish chamber.Be fixed with exhaust tube at the bleeder hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with bleeder hole and vacuum tank; Be provided with gas outlet valve in the upper end of negative pressure shell, the lower part of gas outlet valve is fixed in the center hole of the overlying one end of negative pressure shell, and the upper-end surface of negative pressure shell is exposed in the upper end of gas outlet valve.

The material of described protecting crust is the material of a type in metal, plastics, nylon, glass fibre reinforced plastics or several types; A type in material employing metal, plastics, nylon and the glass fibre reinforced plastics of hollow valve body and negative pressure shell or the material of several types; A type in material employing metal, plastics, nylon and the rubber of ball sealer or sealing cone or the material of several types; Sealing plate material adopt the material of a type in metal, plastics, nylon and glass fibre reinforced plastics or several types; The material of magnetic piston is answered to be can the material of hard to bear magnetic field suction; The material of fixed plug is the material of a type in metal, plastics, nylon, glass fibre reinforced plastics, rubber or several types.

Described protecting crust is the hollow cavity of annular, hollow cavity there is string holes, the parts installed in field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell are installed in hollow cavity, or, the parts installed in electronic remote controller, field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell are installed in hollow cavity; String holes is the hole allowing insulated electric conductor pass; The inner of the annular housing of hollow cavity is fixed on negative pressure shell.

For the ease of protecting crust processing and be convenient to accessory to load in protecting crust, described protecting crust is the assemblying body after segmentation, and after the annular position of protecting crust is divided into two parts, recombinant is together.

The inner chamber of described negative pressure shell is circular cylindrical cavity, and the cylndrical surface of columniform cavity is smooth curved surface; Upper end on the center line of inner chamber has that center hole passes negative pressure shell, lower end has bleeder hole to pass negative pressure shell; There is sealing neck protruding upward at the middle part of the lower end in negative pressure shell, the upper part of the inside of sealing neck is closed hole, lower part is bleeder hole, the time in of not installing sealing plate in closed hole, closed hole communicates with bleeder hole, closed hole and sealing plate below one side coordinate.

Described gas outlet valve comprises hollow valve body and ball sealer or sealing and bores, and hollow valve body is hollow tubular, and internal taper hole is in the middle part of the inner chamber of hollow tubular or middle and lower part, and the internal diameter of the upper part of the internal taper hole in hollow tubular internal diameter that is large, lower part is little; There is return-air sealed end the lower end of hollow valve body, the lower end surface of return-air sealed end in the lower end of hollow valve body, upper-end surface is internal taper hole, the large end of internal taper hole communicates with the upper end of gas outlet valve, small end communicates with the lower end of gas outlet valve, and the inner conical surface of internal taper hole is provided with ball sealer or sealing cone.Described internal taper hole is the circular hole having tapering, and the face of circular hole is inner conical surface; The small end of internal taper hole under, hold upper greatly, the sphere of inner conical surface and ball sealer or seal the male cone (strobilus masculinus) of boring and coordinate, can inner conical surface be sealed under the effect of the gravity of ball sealer or sealing cone self, inner conical surface and ball sealer can be opened by suction when having suction on ball sealer or sealing cone or seal the passage of boring and sealing; The air pressure that ball sealer or sealing are bored above is larger, and the gluing, sealing effect of ball sealer or sealing cone and inner conical surface is better; Inner conical surface and ball sealer can be opened when being with the air of pressure from the endoporus of hollow valve body lower end or seal the sealing of boring and form passage.

For the ease of negative pressure shell processing and be convenient to accessory to load in negative pressure shell, described negative pressure shell is the assemblying body after segmentation; The upper end of the circular cylindrical cavity part in negative pressure shell is divided into two sections, the main body that the upper part of segmentation place is pump cover, lower part is negative pressure shell, center hole is on pump cover, and bleeder hole is at the middle part of the main body lower end of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity; Or, the lower end of the circular cylindrical cavity part in negative pressure shell is divided into two sections, the main body that the lower part of segmentation place is pump cover, upper part is negative pressure shell, bleeder hole is at the middle part of pump cover, center hole is at the middle part of the upper end of the main body of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity.

Described magnetic piston of answering is columniform iron core, and the periphery of columniform iron core is smooth periphery, and smooth periphery has the annular groove of depression, and annular groove is embedded with seal ring; Described periphery coordinates with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide in the inner chamber of negative pressure shell.There are penetration hole and receiving bore in the cylindrical central portion position of described columniform iron core, receiving bore runs through the lower end surface of iron core, and penetration hole runs through above iron core, and receiving bore is below penetration hole, receiving bore communicates with penetration hole and pumping chamber, and penetration hole communicates with squish chamber and receiving bore.The top that the upper part of described penetration hole runs through the upper-end surface of iron core, lower part runs through the receiving bore of iron core lower part, the lower part of penetration hole is vent, the upper part of penetration hole is consent, and the intermediate portion between vent and consent is closed hole.The receiving bore of depression on the lower end of columniform iron core is oriented, the circular hole that described receiving bore communicates with vent, upwards cave in, when answering the lower end in magnetic piston arrives negative pressure shell, receiving bore is for holding restriction cap and making restriction cap not collide with answering magnetic piston; Being vent on receiving bore, is closed hole above vent, is consent above closed hole.Described vent is the via hole allowing air pass through, and communicates with receiving bore and consent; Described consent is the hole of installation and fixing fixed plug, communicates with receiving bore and squish chamber.

Described fixed plug be restriction be arranged on the distance of answering the sealing plate in the closed hole in magnetic piston to move up, centre has the plug of vent, described plug to be that centre has the cylinder of through hole or annular ring or jump ring circle; Fixed plug is centre when having a cylinder of through hole, and the fixing employing interference fit in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion cylinder in consent; When fixed plug is annular ring, the fixing employing interference fit in consent is fixed or is adopted jump ring to be stuck in the two ends of the jump-ring slot internal fixtion annular ring in consent; When fixed plug is jump ring circle, directly jump ring is stuck in consent.

Described closed hole is the hole of shallow cylindrical or shallow cone cylindricality, above bleeder hole in the sealing neck of the lower end respectively in negative pressure shell and the upper-end surface of sealing neck forms one-level rank and form the rank of one-level annular with consent between the vent of answering in magnetic piston and consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality be hold sealing plate inner headed face or internal conical surface, the bottom surface of closed hole is annular sealing surface porose below.

Described sealing cone is cone or cone cylinder, and the annular surface of cone or cone cylinder is the male cone (strobilus masculinus) having tapering; The male cone (strobilus masculinus) of sealing cone and inner conical surface press down by sealing the gravity of boring self and seal inner conical surface when sealing.

Described ball sealer is spherosome or oval ball, and the surface of spherosome or oval ball is sealing surface, and sealing surface is smooth sphere; Gravity by ball sealer when the sphere of ball sealer and inner conical surface seal presses down and seals inner conical surface.

Described sealing plate is circular flat board, and below dull and stereotyped, one side is sealing surface, and sealing surface coordinates with the closed hole in sealing neck and coordinates with the closed hole of answering on magnetic piston respectively.

Described restriction cap is calotte, and the crown of calotte part has the air passing hole allowing gas pass through, and the hatband partial fixing of calotte can limit the distance of moving on the sealing plate installed in sealing neck on sealing neck.

Described field controller controls the controller that upper magnet and lower magnet generate an electromagnetic field, control time and the time length generated an electromagnetic field that upper magnet and lower magnet generate an electromagnetic field and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

Described upper magnet and lower magnet are the electromagnetic coils that can generate an electromagnetic field.

In order to prevent robber from stealing automobile easily, making robber not have vacuum servo when driving a car and stopping stealing garage is adopt installing remote device between teacher position key operation and field controller to connect and cut off the power-on circuit generated an electromagnetic field; Described electronic remote controller is the circuit switch of connecting and cutting off field controller, and comprise the switch sections and electronic telecontrol part that switch on or off circuit, electronic telecontrol part comprises remote controller switch and electronic signal receiver; Remote controller switch is used for staff and carries with, and is convenient to staff and handles the normal work of extracting vacuum brake boost energy-saving pump and cut off the control circuit of extracting vacuum brake boost energy-saving pump; Described electronic remote controller can have in the present invention, also can not have.

Described exhaust tube connects the bleeder hole of negative pressure shell and the hollow tubular of vacuum tank.

Described bleeder hole be air enter the inner chamber of negative pressure shell through air passing hole, at the lower part in center portion of sealing neck; The time in of not installing sealing plate in closed hole, the closed hole on the sealing neck of protecting crust lower end communicates with bleeder hole.

The air extracted in vacuum tank is laid in and is waited to press in pumping chamber, extrudes air and produce air pressure and discharge outside negative pressure shell in squish chamber; In squish chamber during exhaust, pumping chamber communicates with squish chamber; When discharging air in squish chamber, pumping chamber is by ball sealer or sealing cone and answer the internal taper hole in magnetic piston to seal and disconnect the passage of bleeding entering squish chamber.

Described extracting vacuum brake boost energy-saving pump in the process of exhaust, control bleed-off passage and go out air passageways one-way check valve in there is no return spring; When pumping chamber exhaust, the suction of answering magnetic piston stroking upward to produce is opened sealing plate and is opened the passage of bleeding with the sealing of the closed hole in the sealing neck of the lower end in negative pressure shell, is arranged on and answers the automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate on the closed hole in magnetic piston; When squish chamber exhaust, be arranged on that ball sealer on the internal taper hole of gas outlet valve or sealing cone utilize the gravity of self to make ball sealer or the sealing automatic decline return of cone and the passage of closing the discharge on gas outlet valve seals, answer magnetic descent of piston and make to produce pumping chamber in pressure promotion and be arranged on and answer the up passage of bleeding entered in squish chamber of then opening of the sealing plate on the closed hole in magnetic piston; When discharging air in squish chamber, under the effect of outlet pressure, promote ball sealer on the internal taper hole of gas outlet valve or sealing cone up and open the passage of giving vent to anger of gas outlet valve, be arranged on and answer the sealing plate on the closed hole in magnetic piston to utilize the gravity of self to make sealing plate decline return and close and answer the passage of bleeding on magnetic piston to seal automatically.

In order to ensure that extracting vacuum brake boost energy-saving pump can normally work, adopt connection and the cut-out of the connecting circuit of the teacher position key operation controlling magnetic field controller connected with insulated electric conductor; Or, adopt connection and the cut-out of the connecting circuit of teacher position key operation and the electronic remote controller co-controlling field controller connected with insulated electric conductor.

Keeping the shape of protecting crust to ensure protecting crust that the coil of upper magnet and lower magnet can be protected not to be damaged, in the inner chamber of protecting crust, manufacturing the skeleton having support.

Air in the pumping chamber promoting in negative pressure shell to enable to answer magnetic piston enters in squish chamber, and the electromagnetic field adopting lower magnet to produce answers magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as pulling.

During use, the power-on circuit of insulated electric conductor and field controller directly connected by teacher of the opening position key operation, or, the starting button of remote controller switch pressed by teacher of the opening position key after connecting the power-on circuit of electronic remote controller, the circuit of electronic remote controller and field controller connected by electronic signal receiver after receiving activating signal; The power-on circuit that field controller connects circulation connection upper magnet and lower magnet generates an electromagnetic field, when upper magnet generates an electromagnetic field, the attraction force of electromagnetic field pulls answers magnetic piston to move up, when answering magnetic piston to start up, descending and close the passage of bleeding that air enters squish chamber under being arranged on the effect of the gravity of answering the sealing plate on the closed hole in magnetic piston at self; When answering magnetic piston stroking upward, answer the up of magnetic piston and make the air in squish chamber create pressure, have the air of pressure from the endoporus of the sealed end of gas outlet valve lower end enter into internal taper hole in gas outlet valve promote ball sealer or sealing cone up and open the sealing channel of gas outlet valve, the air in squish chamber is entered in air after gas outlet valve; Answer magnetic piston when up, magnetic piston is answered also to make to create pull of vacuum in pumping chamber, pull of vacuum is inhaled motive sealing plate and sealing plate is separated with the sealing surface of closed hole, air in vacuum tank enters into closed hole from exhaust tube through bleeder hole, then the air passing hole on restriction cap enters in the pumping chamber of answering below magnetic piston in negative pressure shell.

When answering magnetic piston stroking upward to move into place, field controller connects the power-on circuit of lower magnet after disconnecting the power-on circuit of upper magnet, and the electromagnetic field of upper magnet disappears, and the electromagnetic field that lower magnet produces pulls answers magnetic descent of piston; When answering magnetic piston to start descending, be arranged on descending return under the effect of the negative pressure of vacuum of sealing plate under the effect of self gravitation and in vacuum tank of the negative pressure shell lower end in the sealing neck of lower end in negative pressure shell and close the bleed-off passage entering pumping chamber, ball sealer in gas outlet valve or sealing are bored descending return under the effect of the gravity of self and seal the inner conical surface of gas outlet valve, have cut off the outlet passageway in squish chamber; Answer magnetic piston when descending, the air of answering magnetic piston to promote to enter in pumping chamber and make air produce internal pressure, have the air of pressure from the vent of answering in magnetic piston enter into answer the closed hole in magnetic piston upwards wash open sealing plate with closed hole sealing and make sealing plate be shifted after continue up, enter after the vent in fixed plug in squish chamber.

Answer magnetic piston when the gravitation of the electromagnetic field that lower magnet produces pulls descending putting in place, be arranged on descending closed hole is shut under the effect of the gravity of answering the sealing plate on the closed hole in magnetic piston at self and make air not return pumping chamber, now, the power-on circuit that field controller connects again magnet again generates an electromagnetic field and pulls and answers magnetic piston stroking upward; The connection of circulation like this and cut off circuit, the electromagnetic field that upper magnet is produced pulls answers magnetic piston stroking upward and the electromagnetic field that allows lower magnet produce to pull to answer magnetic descent of piston, constantly the air extraction in vacuum tank is entered in air.

A manufacture method for extracting vacuum brake boost energy-saving pump, is characterized in that:

During fabrication, the type in protecting crust employing metal, plastics, nylon, glass fibre reinforced plastics or the material manufacture of several types; Hollow valve body and negative pressure shell adopt the material manufacture of a type in metal, plastics, nylon and glass fibre reinforced plastics or several types; The material manufacture of ball sealer or the type sealed in cone employing metal, plastics, nylon and rubber or several types; A type in sealing plate employing metal, plastics, nylon and glass fibre reinforced plastics or the material manufacture of several types; Magnetic piston is answered to adopt the material manufacture of the hard to bear magnetic field suction of energy; A type in fixed plug employing metal, plastics, nylon, glass fibre reinforced plastics, rubber or the material manufacture of several types.

Protecting crust creates the hollow cavity of annular, and hollow cavity manufactures string holes, and string holes creates the hole allowing insulated electric conductor pass; The parts installed in field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell are installed in hollow cavity, or, the parts installed in electronic remote controller, field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell are installed in hollow cavity; The inner of the annular housing of hollow cavity is fixed on negative pressure shell.

Conveniently assemble, during fabrication, after protecting crust is divided into two-part manufacture from annular position, recombinant together for protecting crust.

The inner chamber of negative pressure shell creates columniform cavity, and the periphery of columniform cavity creates smooth curved surface; Upper end on the center line of inner chamber manufacture have through negative pressure shell center hole, lower end manufactures has bleeder hole to pass negative pressure shell; The middle part of the lower end in negative pressure shell manufactures sealing neck protruding upward, the inside of sealing neck upper part creates closed hole, lower part creates bleeder hole, closed hole communicates with bleeder hole, closed hole and sealing plate below simultaneously coordinate.

Gas outlet valve creates hollow valve body and ball sealer or sealing and bores two-part, hollow valve body creates hollow tubular, internal taper hole is manufactured on middle part or the middle and lower part of the inner chamber of hollow tubular, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow tubular manufactures is large, lower part manufactures is little; The lower end of hollow valve body manufactures return-air sealed end, the lower end surface of return-air sealed end is manufactured on the lower end of hollow valve body, upper-end surface creates internal taper hole, the large end of internal taper hole communicates with the upper end of gas outlet valve, small end communicates with the lower end of gas outlet valve, and the inner conical surface of internal taper hole is provided with ball sealer or sealing cone.Described internal taper hole creates the circular hole of tapering, and the face of circular hole creates inner conical surface; The small end of internal taper hole under, hold upper greatly, can inner conical surface be sealed under the effect of the gravity of ball sealer or sealing cone self, inner conical surface and ball sealer can be opened by suction when having suction on ball sealer or sealing cone or seal the passage of boring and sealing; The air pressure that ball sealer or sealing are bored above is larger, and the gluing, sealing effect of ball sealer or sealing cone and inner conical surface is better; Inner conical surface and ball sealer can be opened when being with the air of pressure from the endoporus of hollow valve body lower end or seal the sealing of boring and form passage.

For the ease of negative pressure shell processing and be convenient to accessory to load in negative pressure shell, described negative pressure shell create segmentation processing manufacture after assemblying body; The upper end of the circular cylindrical cavity part in negative pressure shell is divided into two sections of manufactures, the main body that upper part creates pump cover, lower part creates negative pressure shell of segmentation place, center hole is manufactured on pump cover, bleeder hole is manufactured on the middle part of the main body lower end of negative pressure shell, and being combined into after the main body after pump cover and negative pressure shell manufactures is a composite entity; Or, the lower end of the circular cylindrical cavity part in negative pressure shell is divided into two sections of manufactures, the main body that lower part creates pump cover, upper part creates negative pressure shell of segmentation place, bleeder hole is manufactured on the middle part of pump cover, center hole is manufactured on the middle part of the upper end of the main body of negative pressure shell, and being combined into after the main body of pump cover and negative pressure shell manufactures is a composite entity.

Answer magnetic piston to create columniform iron core, the periphery of columniform iron core creates smooth periphery, and smooth periphery manufactures the annular groove having depression, and annular groove is embedded with seal ring; Described periphery coordinates with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide in the inner chamber of negative pressure shell.The cylindrical central portion position of described columniform iron core manufactures penetration hole and receiving bore, receiving bore runs through the lower end surface of iron core, and penetration hole runs through above iron core, and receiving bore is manufactured on below penetration hole, receiving bore communicates with penetration hole and pumping chamber, and penetration hole communicates with squish chamber and receiving bore.Described penetration hole creates the top that upper part runs through the upper-end surface of iron core, lower part runs through the receiving bore of iron core lower part, the lower part of penetration hole creates vent, the upper part of penetration hole creates consent, and the intermediate portion between vent and consent creates closed hole.The receiving bore of depression on the manufacture of the lower end of columniform iron core is oriented, described receiving bore creates circular hole that communicate with vent, that upwards cave in, when answering the lower end in magnetic piston arrives negative pressure shell, receiving bore can hold restriction cap and restriction cap is not collided with answering magnetic piston.Manufacture on receiving bore and have vent, manufacturing above of vent has closed hole, and manufacturing above of closed hole has consent; Described vent creates the via hole allowing air pass through, and communicates with receiving bore and consent; Described consent creates the hole of installation and fixing fixed plug, communicates with receiving bore and squish chamber.

Fixed plug creates the plug that there is vent centre, and described plug creates centre the cylinder of through hole or annular ring or jump ring circle, can limit the distance being arranged on and answering the sealing plate in the closed hole in magnetic piston to move up; Fixed plug creates centre when having a cylinder of through hole, and the fixing employing interference fit in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion cylinder in consent; When fixed plug creates annular ring, the fixing employing interference fit in consent is fixed or is adopted jump ring to be stuck in the two ends of the jump-ring slot internal fixtion annular ring in consent; When fixed plug creates jump ring circle, directly jump ring is stuck in consent.

Described closed hole creates the hole of shallow cylindrical or shallow cone cylindricality, be manufactured on respectively the bleeder hole in the sealing neck of the lower end in negative pressure shell above and the upper-end surface of sealing neck form one-level rank and be manufactured on the rank of answering and forming one-level annular between the vent in magnetic piston and consent with consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality create hold sealing plate inner headed face or internal conical surface, the bottom surface of closed hole creates porose annular sealing surface below.

Sealing cone creates cone or cone cylinder, and the annular surface of cone or cone cylinder creates the male cone (strobilus masculinus) of tapering; The male cone (strobilus masculinus) of sealing cone and inner conical surface press down by sealing the gravity of boring self and seal inner conical surface when sealing.

Ball sealer creates spherosome or oval ball, and the surface of spherosome or oval ball creates sealing surface, and sealing surface creates smooth sphere; Self gravitation by ball sealer when the sphere of ball sealer and inner conical surface seal presses down and seals inner conical surface.

Sealing plate creates circular flat board, and below dull and stereotyped, one side creates sealing surface, and sealing surface coordinates with the closed hole in sealing neck and coordinates with the closed hole of answering on magnetic piston respectively.

Restriction cap creates calotte, and the crown of calotte part manufactures the air passing hole allowing gas pass through, and the hatband partial fixing of calotte can limit the distance of moving on the sealing plate installed in sealing neck on sealing neck.

Field controller creates the controller controlling upper magnet and lower magnet and generate an electromagnetic field, control time and the time length generated an electromagnetic field that upper magnet and lower magnet generate an electromagnetic field and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

Upper magnet and lower magnet create the electromagnetic coil that can generate an electromagnetic field.

In order to prevent robber from stealing automobile easily, making robber not have vacuum servo when driving a car and stopping stealing garage is adopt installing remote device between teacher position key operation and field controller to connect and cut off the power-on circuit generated an electromagnetic field; Described electronic remote controller creates the circuit switch connected and cut off field controller, and comprise the switch sections and electronic telecontrol part that switch on or off circuit, electronic telecontrol part comprises remote controller switch and electronic signal receiver; Described electronic remote controller can have in the present invention, also can not have.

Exhaust tube creates and connects the bleeder hole of negative pressure shell and the hollow tubular of vacuum tank.

Bleeder hole create air enter the inner chamber of negative pressure shell through via hole, be manufactured on the lower part in center portion of sealing neck; The time in of not installing sealing plate in closed hole, the closed hole on the sealing neck of protecting crust lower end communicates with bleeder hole.

In protecting crust, be provided with upper magnet and lower magnet, upper magnet is fixed on the upper part outside negative pressure shell, and lower magnet is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the outside protection upper magnet of negative pressure shell and the coil of lower magnet; Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile.Connect upper magnet to be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receiver of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust; Or connect upper magnet and be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.Be provided with in negative pressure shell sealing plate, limit cap, answer magnetic piston, fixed plug, can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; Be provided with sealing plate in closed hole in the sealing neck of the lower end in negative pressure shell, restriction cap is fixed on the outside of sealing neck by screw thread or jump ring, and when restriction cap is in the receiving bore of answering the lower end of magnetic piston upwards to cave in, restriction cap and receiving bore have gap; Sealing plate coordinates with the closed hole in sealing neck and can seal or open the passage of bleeding of the pumping chamber entered in negative pressure shell; When answering magnetic piston stroking upward, the inner chamber part of answering the negative pressure shell of magnetic piston lower part is pumping chamber; When answering magnetic descent of piston, the inner chamber part of the negative pressure shell of magnetic piston upper part is answered to be squish chamber.Be fixed with exhaust tube at the bleeder hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with bleeder hole and vacuum tank; Be provided with gas outlet valve in the upper end of negative pressure shell, the lower part of gas outlet valve is fixed in the center hole of the overlying one end of negative pressure shell, and the upper-end surface of negative pressure shell is exposed in the upper end of gas outlet valve.

The compact structure of extracting vacuum brake boost energy-saving pump of the present invention, vibrate little, utilization rate of electrical is high, powerful, the electric vehicle and the internal-combustion engines vehicle that are applicable to the hydraulic braking of vacuum servo formula are installed and used, and also can produce vacuum normally and realize vacuum servo after internal-combustion engine shuts down; The market prospects of industrialization are good, commercial value is high, manufacture and use all very convenient.

Accompanying drawing explanation

Fig. 1 and Fig. 2 is the structural representation of extracting vacuum brake boost energy-saving pump;

Fig. 3 is the structural representation of answering magnetic piston;

Fig. 4 is the schematic appearance of the plan view of answering magnetic piston;

Shown in figure: protecting crust 1, foot rest 2, exhaust tube 3, negative pressure shell 4, hollow valve body 5, lower magnet 6, answer magnetic piston 7, ball sealer 8 or sealing cone 8, fixed plug 10, restriction cap 11, air passing hole 12, upper magnet 13, sealing plate 14, receiving bore 15, vent 16, closed hole 17, consent 18, annular sealing surface 19.

Embodiment

Extracting vacuum brake boost energy-saving pump of the present invention mainly comprises protecting crust 1, upper magnet 13, lower magnet 6, negative pressure shell 4, bleeder hole, sealing plate 14, ball sealer 8 or sealing cone 8, restriction cap 11, answers magnetic piston 7, fixed plug 10, internal taper hole, vent 16, gas outlet valve, exhaust tube 3, field controller, electronic remote controller; Or comprise protecting crust 1, upper magnet 13, lower magnet 6, negative pressure shell 4, bleeder hole, sealing plate 14, ball sealer 8 or sealing cone 8, restriction cap 11, answer magnetic piston 7, fixed plug 10, internal taper hole, vent 16, gas outlet valve, exhaust tube 3, field controller.

Upper magnet 13 and lower magnet 6 are installed in protecting crust 1, upper magnet 13 is fixed on the upper part outside negative pressure shell 4, lower magnet 6 is fixed on the lower part outside negative pressure shell 4, and protecting crust 1 is fixed on the outside protection upper magnet 13 of negative pressure shell 4 and the coil of lower magnet 6; Below the outside of protecting crust 1, one side is fixed with foot rest 2, and the lower end of foot rest 2 protects exhaust tube 3 not oppressed lower than negative pressure shell 4 lower end, and the lower end of foot rest 2 is fixed on the vehicle frame of automobile.

Connect upper magnet 13 to be connected with the circuit of field controller with the circuit of lower magnet 6, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receiver of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust 1; Or connect upper magnet 13 and be connected with the circuit of field controller with the circuit of lower magnet 6, the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust 1.

Sealing plate 14, restriction cap 11 are installed in negative pressure shell 4, answer magnetic piston 7, fixed plug 10, can slide up and down in the inner chamber of answering magnetic piston 7 to be arranged on negative pressure shell 4; In closed hole 17 below the consent 18 of answering in magnetic piston 7, sealing plate 14 is installed, sealing plate 14 can move up and down in closed hole 17, in consent 18, be provided with fixed plug 10 to limit displacement distance when sealing plate 14 moves up, the fixing employing interference fit of fixed plug 10 in consent 18 is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug 10 in consent 18; The passage of bleeding of answering on magnetic piston 7 can be closed when sealing surface below sealing plate 14 coordinates with the annular sealing surface 19 of closed hole 17 and seals, the passage of bleeding of answering on magnetic piston 7 when the sealing surface below sealing plate 14 separates with the annular sealing surface 19 of closed hole 17, can be opened; In closed hole 17 in the sealing neck of the lower end in negative pressure shell 4, sealing plate 14 is installed, restriction cap 11 is fixed on the outside of sealing neck by screw thread or jump ring, when restriction cap 11 is in the receiving bore 15 of answering the lower end of magnetic piston 7 upwards to cave in, restriction cap 11 has gap with receiving bore 15; Sealing plate 14 coordinates with the closed hole 17 in sealing neck and can seal or open the passage of bleeding of the pumping chamber entered in negative pressure shell 4; When answering magnetic piston 7 up, the inner chamber part of answering the negative pressure shell 4 of magnetic piston 7 lower part is pumping chamber; When answering magnetic piston 7 descending, the inner chamber part of the negative pressure shell 4 of magnetic piston 7 upper part is answered to be squish chamber.Be fixed with exhaust tube 3 at the bleeder hole place of the lower end of negative pressure shell 4, the other end of exhaust tube 3 is connected with vacuum tank, and the endoporus of exhaust tube 3 communicates with bleeder hole and vacuum tank; Be provided with gas outlet valve in the upper end of negative pressure shell 4, the lower part of gas outlet valve is fixed in the center hole of the overlying one end of negative pressure shell 4, and the upper-end surface of negative pressure shell 4 is exposed in the upper end of gas outlet valve.

During fabrication, protecting crust 1 adopts the material manufacture of a type in metal, plastics, nylon, glass fibre reinforced plastics, rubber or several types, when protecting crust 1 when adopting rubber material to manufacture or after manufacture shaping is soft-shell, it is made to float on gas face will first in use the inflation of the inner chamber of protecting crust 1; Hollow valve body 5 and negative pressure shell 4 adopt the material manufacture of a type in metal, plastics, nylon and glass fibre reinforced plastics or several types; Ball sealer 8 or sealing cone 8 adopt the material manufacture of a type in metal, plastics, nylon and rubber or several types; Sealing plate 14 adopts the material manufacture of a type in metal, plastics, nylon and glass fibre reinforced plastics or several types; Magnetic piston 7 is answered to adopt the material manufacture of the hard to bear magnetic field suction of energy; Fixed plug 10 adopts the material manufacture of a type in metal, plastics, nylon, glass fibre reinforced plastics, rubber or several types.

Protecting crust 1 creates the hollow cavity of annular, and hollow cavity manufactures string holes, and string holes creates the hole allowing insulated electric conductor pass; The parts installed in field controller, upper magnet 13, lower magnet 6 and negative pressure shell 4 and negative pressure shell 4 are installed in hollow cavity, or, the parts installed in electronic remote controller, field controller, upper magnet 13, lower magnet 6 and negative pressure shell 4 and negative pressure shell 4 are installed in hollow cavity; The inner of the annular housing of hollow cavity is fixed on negative pressure shell 4.

Conveniently assemble, during fabrication, after protecting crust 1 is divided into two-part manufacture from annular position, recombinant together for protecting crust 1.

The inner chamber of negative pressure shell 4 creates columniform cavity, and the periphery of columniform cavity creates smooth curved surface; Upper end on the center line of inner chamber manufacture have through negative pressure shell 4 center hole, lower end manufactures has bleeder hole to pass negative pressure shell 4; The middle part of the lower end in negative pressure shell 4 manufactures sealing neck protruding upward, the upper part of the inside of sealing neck creates closed hole 17, lower part creates bleeder hole, closed hole 17 communicates with bleeder hole, and closed hole 17 coordinates with one side below sealing plate 14.

Gas outlet valve creates hollow valve body 5 and ball sealer 8 or seals cone 8 two-part, hollow valve body 5 creates hollow tubular, internal taper hole is manufactured on middle part or the middle and lower part of the inner chamber of hollow tubular, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow tubular manufactures is large, lower part manufactures is little; The lower end of hollow valve body 5 manufactures return-air sealed end, the lower end surface of return-air sealed end is manufactured on the lower end of hollow valve body 5, upper-end surface creates internal taper hole, the large end of internal taper hole communicates with the upper end of gas outlet valve, small end communicates with the lower end of gas outlet valve, and the inner conical surface of internal taper hole is provided with ball sealer 8 or sealing cone 8.Described internal taper hole creates the circular hole of tapering, and the face of circular hole creates inner conical surface; The small end of internal taper hole under, hold upper greatly, can inner conical surface be sealed under the effect of the gravity of ball sealer 8 or sealing cone 8 self, inner conical surface and ball sealer 8 can be opened by suction when having suction on ball sealer 8 or sealing cone 8 or seal the passage that cone 8 seals; Air pressure above ball sealer 8 or sealing cone 8 is larger, and the gluing, sealing effect of ball sealer 8 or sealing cone 8 and inner conical surface is better; Inner conical surface and ball sealer 8 can be opened when being with the air of pressure from the endoporus of hollow valve body 5 lower end or sealing the sealing of cone 8 and form passage.

For the ease of negative pressure shell 4 processing and be convenient to accessory to load in negative pressure shell 4, described negative pressure shell 4 create segmentation processing manufacture after assemblying body; The upper end of the circular cylindrical cavity part in negative pressure shell 4 is divided into two sections of manufactures, the main body that the upper part of segmentation place creates pump cover, lower part creates negative pressure shell 4, center hole is manufactured on pump cover, bleeder hole is manufactured on the middle part of the main body lower end of negative pressure shell 4, and being combined into after the main body after pump cover and negative pressure shell 4 manufactures is a composite entity; Or, the lower end of the circular cylindrical cavity part in negative pressure shell 4 is divided into two sections of manufactures, the main body that the lower part of segmentation place creates pump cover, upper part creates negative pressure shell 4, bleeder hole is manufactured on the middle part of pump cover, center hole is manufactured on the middle part of the upper end of the main body of negative pressure shell 4, and being combined into after the main body of pump cover and negative pressure shell 4 manufactures is a composite entity.

Answer magnetic piston 7 to create columniform iron core, the periphery of columniform iron core creates smooth periphery, and smooth periphery manufactures the annular groove having depression, and annular groove is embedded with seal ring; Described periphery coordinates with the inner chamber of negative pressure shell 4 can the inner chamber of sealed negative-pressure shell 4, and can slide in the inner chamber of negative pressure shell 4.The cylindrical central portion position of described columniform iron core manufactures penetration hole and receiving bore 15, receiving bore 15 runs through the lower end surface of iron core, penetration hole runs through above iron core, receiving bore 15 is manufactured on below penetration hole, receiving bore 15 communicates with penetration hole and pumping chamber, and penetration hole communicates with squish chamber and receiving bore 15.Described penetration hole creates the top that upper part runs through the upper-end surface of iron core, lower part runs through the receiving bore 15 of iron core lower part, the lower part of penetration hole creates vent 16, the upper part of penetration hole creates consent 18, and the intermediate portion between vent 16 and consent 18 creates closed hole 17.The receiving bore 15 of depression on the manufacture of the lower end of columniform iron core is oriented, described receiving bore 15 creates circular hole that communicate with vent 16, that upwards cave in, when the lower end of answering magnetic piston 7 to arrive in negative pressure shell 4, receiving bore 15 can hold restriction cap 11 and restriction cap 11 is not collided with answering magnetic piston 7.Manufacture on receiving bore 15 and have vent 16, manufacturing above of vent 16 has closed hole 17, and manufacturing above of closed hole 17 has consent 18; Described vent 16 creates the via hole allowing air pass through, and communicates with receiving bore 15 and consent 18; Described consent 18 creates the hole of installation and fixing fixed plug 10, communicates with receiving bore 15 and squish chamber.

Fixed plug 10 creates the plug that there is vent 16 centre, and described plug creates centre the cylinder of through hole or annular ring or jump ring circle, can limit the distance being arranged on and answering the sealing plate 14 in the closed hole 17 in magnetic piston 7 to move up; Fixed plug 10 creates centre when having a cylinder of through hole, and the fixing employing interference fit in consent 18 is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion cylinder in consent 18; When fixed plug 10 creates annular ring, the fixing employing interference fit in consent 18 is fixed or is adopted jump ring to be stuck in the two ends of the jump-ring slot internal fixtion annular ring in consent 18; When fixed plug 10 creates jump ring circle, directly jump ring is stuck in consent 18.

Described closed hole 17 creates the hole of shallow cylindrical or shallow cone cylindricality, be manufactured on respectively the bleeder hole in the sealing neck of the lower end in negative pressure shell 4 above and the upper-end surface of sealing neck form one-level rank and be manufactured on the rank of answering and forming one-level annular between the vent 16 in magnetic piston 7 and consent 18 with consent 18, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality creates the inner headed face or internal conical surface that hold sealing plate 14, and the bottom surface of closed hole 17 creates porose annular sealing surface 19 below.

Sealing cone 8 creates cone or cone cylinder, and the annular surface of cone or cone cylinder creates the male cone (strobilus masculinus) of tapering; The male cone (strobilus masculinus) of sealing cone 8 and inner conical surface press down by the gravity sealing cone 8 self and seal inner conical surface when sealing.

Ball sealer 8 creates spherosome or oval ball, and the surface of spherosome or oval ball creates sealing surface, and sealing surface creates smooth sphere; Self gravitation by ball sealer 8 when the sphere of ball sealer 8 and inner conical surface seal presses down and seals inner conical surface.

Sealing plate 14 creates circular flat board, and below dull and stereotyped, one side creates sealing surface, and sealing surface coordinates with the closed hole 17 in sealing neck and coordinates with the closed hole 17 of answering on magnetic piston 7 respectively.

Restriction cap 11 creates calotte, and the crown of calotte part manufactures the air passing hole 12 allowing gas pass through, and the hatband partial fixing of calotte can limit the distance that the sealing plate 14 installed in sealing neck moves on sealing neck.

Field controller creates the controller controlling upper magnet 13 and lower magnet 6 and generate an electromagnetic field, control time and the time length generated an electromagnetic field that upper magnet 13 and lower magnet 6 generate an electromagnetic field and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

Upper magnet 13 and lower magnet 6 create the electromagnetic coil that can generate an electromagnetic field.

Exhaust tube 3 creates and connects the bleeder hole of negative pressure shell 4 and the hollow tubular of vacuum tank.

Bleeder hole create air enter the inner chamber of negative pressure shell 4 through via hole, be manufactured on the lower part in center portion of sealing neck; When not installing sealing plate 14 in closed hole 17, the closed hole 17 on the sealing neck of protecting crust 1 lower end communicates with bleeder hole.

Keeping the shape of protecting crust 1 to ensure protecting crust 1 that the coil of upper magnet 13 and lower magnet 6 can be protected not to be damaged, in the inner chamber of protecting crust 1, manufacturing the skeleton having support.

Air in the pumping chamber that can promote in negative pressure shell 4 to make to answer magnetic piston 7 enters in squish chamber, and the electromagnetic field adopting lower magnet 6 to produce answers magnetic piston 7 to move down the power air in pumping chamber being clamp-oned squish chamber as pulling.

The air extracted in vacuum tank is laid in and is waited to press in pumping chamber, extrudes air and produce air pressure and discharge outside negative pressure shell in squish chamber; In squish chamber during exhaust, pumping chamber communicates with squish chamber; When discharging air in squish chamber, pumping chamber is by ball sealer 8 or sealing cone 8 and answer the internal taper hole in magnetic piston 7 to seal and disconnect the passage of bleeding entering squish chamber.

Described extracting vacuum brake boost energy-saving pump in the process of exhaust, control bleed-off passage and go out air passageways one-way check valve in there is no return spring; When pumping chamber exhaust, answer the suction of the up generation of magnetic piston 7 open sealing plate 14 and the sealing of the closed hole 17 in the sealing neck of the lower end in negative pressure shell 4 and open the passage of bleeding, be arranged on and answer the automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate 14 on the closed hole 17 in magnetic piston 7; When squish chamber exhaust, being arranged on ball sealer 8 on the internal taper hole of gas outlet valve or sealing cone 8 utilizes the gravity of self to make ball sealer 8 or sealing cone 8 decline return and the passage of closing the discharge on gas outlet valve seals automatically, answers magnetic piston 7 descending and makes to produce pumping chamber in pressure promotion and be arranged on and answer the up passage of bleeding entered in squish chamber of then opening of the sealing plate 14 on the closed hole 17 in magnetic piston 7; When discharging air in squish chamber, under the effect of outlet pressure, promote ball sealer 8 on the internal taper hole of gas outlet valve or sealing cone 8 up and open the passage of giving vent to anger of gas outlet valve, be arranged on and answer the sealing plate 14 on the closed hole 17 in magnetic piston 7 to utilize the gravity of self to make sealing plate 14 decline return and close and answer the passage of bleeding on magnetic piston 7 to seal automatically.

During use, the power-on circuit of insulated electric conductor and field controller directly connected by teacher of the opening position key operation, or, the starting button of remote controller switch pressed by teacher of the opening position key after connecting the power-on circuit of electronic remote controller, the circuit of electronic remote controller and field controller connected by electronic signal receiver after receiving activating signal; The power-on circuit that field controller connects circulation connection upper magnet 13 and lower magnet 6 generates an electromagnetic field, when upper magnet 13 generates an electromagnetic field, the attraction force of electromagnetic field pulls answers magnetic piston 7 to move up, when answering magnetic piston 7 to start up, be arranged on and answer the sealing plate 14 on the closed hole 17 in magnetic piston 7 descending and close the passage of bleeding that air enters squish chamber under the effect of the gravity of self; When answering magnetic piston 7 up, answer the up of magnetic piston 7 and make the air in squish chamber create pressure, have the air of pressure from the endoporus of the sealed end of gas outlet valve lower end enter into internal taper hole in gas outlet valve promote ball sealer 8 or sealing cone 8 up and open the sealing channel of gas outlet valve, the air in squish chamber is entered in air after gas outlet valve; Answer magnetic piston 7 when up, magnetic piston 7 is answered also to make to create pull of vacuum in pumping chamber, pull of vacuum is inhaled motive sealing plate 14 and sealing plate 14 and the sealing surface of closed hole 17 is separated, air in vacuum tank enters into closed hole 17 from exhaust tube 3 through bleeder hole, then the air passing hole 12 on restriction cap 11 enters in the pumping chamber of answering below magnetic piston 7 in negative pressure shell 4.

When answering that magnetic piston 7 is up to be moved into place, field controller connects the power-on circuit of lower magnet 6 after disconnecting the power-on circuit of upper magnet 13, and the electromagnetic field of upper magnet 13 disappears, and the electromagnetic field that lower magnet 6 produces pulls answers magnetic piston 7 descending; When answering magnetic piston 7 to start descending, be arranged on descending return under the effect of the negative pressure of vacuum of sealing plate 14 under the effect of self gravitation and in vacuum tank of negative pressure shell 4 lower end in the sealing neck of lower end in negative pressure shell 4 and close the bleed-off passage entering pumping chamber, ball sealer 8 in gas outlet valve or sealing cone 8 descending return and seal the inner conical surface of gas outlet valve under the effect of the gravity of self, has cut off the outlet passageway in squish chamber; Answer magnetic piston 7 when descending, the air of answering magnetic piston 7 to promote to enter in pumping chamber and make air produce internal pressure, there is the air of pressure to enter into from the vent 16 of answering in magnetic piston 7 to answer the closed hole 17 in magnetic piston 7 upwards to wash sealing plate 14 and the sealing of closed hole 17 open and continue up after sealing plate 14 is shifted, enter after the vent 16 in fixed plug 10 in squish chamber.

Answer magnetic piston 7 when the gravitation of the electromagnetic field that lower magnet 6 produces pulls descending putting in place, be arranged on and answer descending closed hole 17 is shut and make air not return pumping chamber under the effect of the gravity of self of the sealing plate 14 on the closed hole 17 in magnetic piston 7, now, the power-on circuit that field controller connects again magnet again generates an electromagnetic field and pulls and answers magnetic piston 7 up; The connection of circulation like this and cut off circuit, the electromagnetic field that upper magnet 13 is produced pulls answers magnetic piston 7 electromagnetic field that is up and that allow lower magnet 6 produce to pull to answer magnetic piston 7 descending, constantly the air extraction in vacuum tank is entered in air.

Claims

1. an extracting vacuum brake boost energy-saving pump, is characterized in that: described extracting vacuum brake boost energy-saving pump comprises protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, sealing plate, sealing cone, limits cap, answers magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller;

In protecting crust, be provided with upper magnet and lower magnet, upper magnet is fixed on the upper part outside negative pressure shell, and lower magnet is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the outside protection upper magnet of negative pressure shell and the coil of lower magnet; Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile;

Connect upper magnet to be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust;

Be provided with in negative pressure shell sealing plate, limit cap, answer magnetic piston, fixed plug, can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; Be provided with sealing plate in closed hole in the sealing neck of the lower end in negative pressure shell, restriction cap is fixed on the outside of sealing neck by screw thread or jump ring, and when restriction cap is in the receiving bore of answering the lower end of magnetic piston upwards to cave in, restriction cap and receiving bore have gap; Sealing plate coordinates with the closed hole in sealing neck and can seal or open the passage of bleeding of the pumping chamber entered in negative pressure shell; When answering magnetic piston stroking upward, the inner chamber part of answering the negative pressure shell of magnetic piston lower part is pumping chamber; When answering magnetic descent of piston, the inner chamber part of the negative pressure shell of magnetic piston upper part is answered to be squish chamber; Be fixed with exhaust tube at the bleeder hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with bleeder hole and vacuum tank; Be provided with gas outlet valve in the upper end of negative pressure shell, the lower part of gas outlet valve is fixed in the center hole of the overlying one end of negative pressure shell, and the upper-end surface of negative pressure shell is exposed in the upper end of gas outlet valve;

Described protecting crust is the hollow cavity of annular, and hollow cavity has string holes, and be provided with the parts installed in field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell in hollow cavity, string holes is the hole allowing insulated electric conductor pass; The inner of the annular housing of hollow cavity is fixed on negative pressure shell;

For the ease of protecting crust processing and be convenient to accessory to load in protecting crust, described protecting crust is the assemblying body after segmentation, and after the annular position of protecting crust is divided into two parts, recombinant is together;

The inner chamber of described negative pressure shell is circular cylindrical cavity, and the cylndrical surface of columniform cavity is smooth curved surface; Upper end on the center line of inner chamber has that center hole passes negative pressure shell, lower end has bleeder hole to pass negative pressure shell; There is sealing neck protruding upward at the middle part of the lower end in negative pressure shell, the upper part of the inside of sealing neck is closed hole, lower part is bleeder hole, the time in of not installing sealing plate in closed hole, closed hole communicates with bleeder hole, closed hole and sealing plate below one side coordinate;

Described gas outlet valve comprises hollow valve body and sealing cone, and hollow valve body is hollow tubular, and internal taper hole is in the middle part of the inner chamber of hollow tubular or middle and lower part, and the internal diameter of the upper part of the internal taper hole in hollow tubular internal diameter that is large, lower part is little; There is return-air sealed end the lower end of hollow valve body, the lower end surface of return-air sealed end in the lower end of hollow valve body, upper-end surface is internal taper hole, the large end of internal taper hole communicates with the upper end of gas outlet valve, small end communicates with the lower end of gas outlet valve, and the inner conical surface of internal taper hole is provided with sealing cone; Described internal taper hole is the circular hole having tapering, and the face of circular hole is inner conical surface; The small end of internal taper hole under, hold upper greatly, inner conical surface with seal the male cone (strobilus masculinus) of bore and coordinate, can inner conical surface be sealed under the effect of the gravity of sealing cone self, inner conical surface can be opened when sealing and having suction above cone by suction and seal and bore the passage sealed; Sealing cone air pressure is above larger, and sealing cone is better with the gluing, sealing effect of inner conical surface; Inner conical surface can be opened when being with the air of pressure from the endoporus of hollow valve body lower end and form passage with sealing the sealing of boring;

For the ease of negative pressure shell processing and be convenient to accessory to load in negative pressure shell, described negative pressure shell is the assemblying body after segmentation; The upper end of the circular cylindrical cavity part in negative pressure shell is divided into two sections, the main body that the upper part of segmentation place is pump cover, lower part is negative pressure shell, center hole is on pump cover, and bleeder hole is at the middle part of the main body lower end of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity; Or, the lower end of the circular cylindrical cavity part in negative pressure shell is divided into two sections, the main body that the lower part of segmentation place is pump cover, upper part is negative pressure shell, bleeder hole is at the middle part of pump cover, center hole is at the middle part of the upper end of the main body of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity;

Described magnetic piston of answering is columniform iron core, and the periphery of columniform iron core is smooth periphery, and smooth periphery has the annular groove of depression, and annular groove is embedded with seal ring; Described periphery coordinates with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide in the inner chamber of negative pressure shell; There are penetration hole and receiving bore in the cylindrical central portion position of described columniform iron core, receiving bore runs through the lower end surface of iron core, and penetration hole runs through above iron core, and receiving bore is below penetration hole, receiving bore communicates with penetration hole and pumping chamber, and penetration hole communicates with squish chamber and receiving bore; The top that the upper part of described penetration hole runs through the upper-end surface of iron core, lower part runs through the receiving bore of iron core lower part, the lower part of penetration hole is vent, the upper part of penetration hole is consent, and the intermediate portion between vent and consent is closed hole; The receiving bore of depression on the lower end of columniform iron core is oriented, the circular hole that described receiving bore communicates with vent, upwards cave in, when answering the lower end in magnetic piston arrives negative pressure shell, receiving bore is for holding restriction cap and making restriction cap not collide with answering magnetic piston; Being vent on receiving bore, is closed hole above vent, is consent above closed hole; Described vent is the via hole allowing air pass through, and communicates with receiving bore and consent; Described consent is the hole of installation and fixing fixed plug, communicates with receiving bore and squish chamber;

Described fixed plug be restriction be arranged on the distance of answering the sealing plate in the closed hole in magnetic piston to move up, centre has the plug of vent, described plug to be that centre has the cylinder of through hole or annular ring or jump ring circle; Fixed plug is centre when having a cylinder of through hole, and the fixing employing interference fit in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion cylinder in consent; When fixed plug is annular ring, the fixing employing interference fit in consent is fixed or is adopted jump ring to be stuck in the two ends of the jump-ring slot internal fixtion annular ring in consent; When fixed plug is jump ring circle, directly jump ring is stuck in consent;

Described closed hole is the hole of shallow cylindrical or shallow cone cylindricality, above bleeder hole in the sealing neck of the lower end respectively in negative pressure shell and the upper-end surface of sealing neck forms one-level rank and form the rank of one-level annular with consent between the vent of answering in magnetic piston and consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality be hold sealing plate inner headed face or internal conical surface, the bottom surface of closed hole is annular sealing surface porose below;

Described sealing cone is cone or cone cylinder, and the annular surface of cone or cone cylinder is the male cone (strobilus masculinus) having tapering; The male cone (strobilus masculinus) of sealing cone and inner conical surface press down by sealing the gravity of boring self and seal inner conical surface when sealing;

Described sealing plate is circular flat board, and below dull and stereotyped, one side is sealing surface, and sealing surface coordinates with the closed hole in sealing neck and coordinates with the closed hole of answering on magnetic piston respectively;

Described restriction cap is calotte, and the crown of calotte part has the air passing hole allowing gas pass through, and the hatband partial fixing of calotte can limit the distance of moving on the sealing plate installed in sealing neck on sealing neck;

Described field controller controls the controller that upper magnet and lower magnet generate an electromagnetic field, control time and the time length generated an electromagnetic field that upper magnet and lower magnet generate an electromagnetic field and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time;

Described upper magnet and lower magnet are the electromagnetic coils that can generate an electromagnetic field;

Described exhaust tube connects the bleeder hole of negative pressure shell and the hollow tubular of vacuum tank;

Described bleeder hole be air enter the inner chamber of negative pressure shell through air passing hole, at the lower part in center portion of sealing neck; The time in of not installing sealing plate in closed hole, the closed hole on the sealing neck of protecting crust lower end communicates with bleeder hole;

The air extracted in vacuum tank is laid in and is waited to press in pumping chamber, extrudes air and produce air pressure and discharge outside negative pressure shell in squish chamber; In squish chamber during exhaust, pumping chamber communicates with squish chamber; When discharging air in squish chamber, pumping chamber is by sealing cone and answer the internal taper hole in magnetic piston seal and disconnect the passage of bleeding entering squish chamber;

Described extracting vacuum brake boost energy-saving pump in the process of exhaust, control bleed-off passage and go out air passageways one-way check valve in there is no return spring; When pumping chamber exhaust, the suction of answering magnetic piston stroking upward to produce is opened sealing plate and is opened the passage of bleeding with the sealing of the closed hole in the sealing neck of the lower end in negative pressure shell, is arranged on and answers the automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate on the closed hole in magnetic piston; When squish chamber exhaust, the passage that the sealing cone be arranged on the internal taper hole of gas outlet valve utilizes the gravity of self to make sealing bore automatic decline return and closes the discharge on gas outlet valve seals, and answers magnetic descent of piston and makes to produce pumping chamber in pressure promotion and be arranged on and answer the up passage of bleeding entered in squish chamber of then opening of the sealing plate on the closed hole in magnetic piston; When discharging air in squish chamber, under the effect of outlet pressure, promote sealing cone on the internal taper hole of gas outlet valve up and open the passage of giving vent to anger of gas outlet valve, being arranged on and answering the sealing plate on the closed hole in magnetic piston to utilize the gravity of self to make sealing plate decline return and close and answer the passage of bleeding on magnetic piston to seal automatically;

During use, the power-on circuit of insulated electric conductor and field controller connected by teacher of the opening position key operation, the power-on circuit that field controller connects circulation connection upper magnet and lower magnet generates an electromagnetic field, when upper magnet generates an electromagnetic field, the attraction force of electromagnetic field pulls answers magnetic piston to move up, when answering magnetic piston to start up, descending and close the passage of bleeding that air enters squish chamber under being arranged on the effect of the gravity of answering the sealing plate on the closed hole in magnetic piston at self; When answering magnetic piston stroking upward, answer the up of magnetic piston and make the air in squish chamber create pressure, having the air of pressure to enter into internal taper hole in gas outlet valve from the endoporus of the sealed end of gas outlet valve lower end, to promote sealing cone up and open the sealing channel of gas outlet valve, and the air in squish chamber is entered in air after gas outlet valve; Answer magnetic piston when up, magnetic piston is answered also to make to create pull of vacuum in pumping chamber, pull of vacuum is inhaled motive sealing plate and sealing plate is separated with the sealing surface of closed hole, air in vacuum tank enters into closed hole from exhaust tube through bleeder hole, then the air passing hole on restriction cap enters in the pumping chamber of answering below magnetic piston in negative pressure shell;

When answering magnetic piston stroking upward to move into place, field controller connects the power-on circuit of lower magnet after disconnecting the power-on circuit of upper magnet, and the electromagnetic field of upper magnet disappears, and the electromagnetic field that lower magnet produces pulls answers magnetic descent of piston; When answering magnetic piston to start descending, be arranged on descending return under the effect of the negative pressure of vacuum of sealing plate under the effect of self gravitation and in vacuum tank of the negative pressure shell lower end in the sealing neck of lower end in negative pressure shell and close the bleed-off passage entering pumping chamber, ball sealer in gas outlet valve or sealing are bored descending return under the effect of the gravity of self and seal the inner conical surface of gas outlet valve, have cut off the outlet passageway in squish chamber; Answer magnetic piston when descending, the air of answering magnetic piston to promote to enter in pumping chamber and make air produce internal pressure, have the air of pressure from the vent of answering in magnetic piston enter into answer the closed hole in magnetic piston upwards wash open sealing plate with closed hole sealing and make sealing plate be shifted after continue up, enter in squish chamber after the vent in fixed plug;

2. extracting vacuum brake boost energy-saving pump according to claim 1, is characterized in that: keep the shape of protecting crust to ensure protecting crust that the coil of upper magnet and lower magnet can be protected not to be damaged, and manufactures the skeleton having support in the inner chamber of protecting crust.

3. extracting vacuum brake boost energy-saving pump according to claim 1, it is characterized in that: the air in the pumping chamber promoting in negative pressure shell to enable to answer magnetic piston enters in squish chamber, and the electromagnetic field adopting lower magnet to produce answers magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as pulling.

4. extracting vacuum brake boost energy-saving pump according to claim 1, is characterized in that: adopt the teacher position key operation be connected with insulated electric conductor to come connection and the cut-out of the connecting circuit of controlling magnetic field controller.

5. extracting vacuum brake boost energy-saving pump according to claim 1, it is characterized in that: the compact structure of described extracting vacuum brake boost energy-saving pump, vibrate little, utilization rate of electrical is high, powerful, the electric vehicle and the internal-combustion engines vehicle that are applicable to the hydraulic braking of vacuum servo formula are installed and used, and also can produce vacuum normally and realize vacuum servo after internal-combustion engine shuts down; The market prospects of industrialization are good, commercial value is high, manufacture and use all very convenient.

6. a manufacture method for extracting vacuum brake boost energy-saving pump, is characterized in that: during fabrication, and protecting crust creates the hollow cavity of annular, and hollow cavity manufactures string holes, and string holes creates the hole allowing insulated electric conductor pass; Be provided with the parts installed in field controller, upper magnet, lower magnet and negative pressure shell and negative pressure shell in hollow cavity, the inner of the annular housing of hollow cavity is fixed on negative pressure shell;

Conveniently assemble, during fabrication, after protecting crust is divided into two-part manufacture from annular position, recombinant together for protecting crust;

The inner chamber of negative pressure shell creates columniform cavity, and the periphery of columniform cavity creates smooth curved surface; Upper end on the center line of inner chamber manufacture have through negative pressure shell center hole, lower end manufactures has bleeder hole to pass negative pressure shell; The middle part of the lower end in negative pressure shell manufactures sealing neck protruding upward, the inside of sealing neck upper part creates closed hole, lower part creates bleeder hole, closed hole communicates with bleeder hole, closed hole and sealing plate below simultaneously coordinate;

Gas outlet valve creates hollow valve body and sealing cone two-part, hollow valve body creates hollow tubular, internal taper hole is manufactured on middle part or the middle and lower part of the inner chamber of hollow tubular, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow tubular manufactures is large, lower part manufactures is little; The lower end of hollow valve body manufactures return-air sealed end, the lower end surface of return-air sealed end is manufactured on the lower end of hollow valve body, upper-end surface creates internal taper hole, the large end of internal taper hole communicates with the upper end of gas outlet valve, small end communicates with the lower end of gas outlet valve, and the inner conical surface of internal taper hole is provided with sealing cone; Described internal taper hole creates the circular hole of tapering, and the face of circular hole creates inner conical surface; The small end of internal taper hole under, hold upper greatly, can inner conical surface be sealed under the effect of the gravity of sealing cone self, inner conical surface can be opened with sealing by suction when cone has suction above and bore the passage sealed sealing; Sealing cone air pressure is above larger, and sealing cone is better with the gluing, sealing effect of inner conical surface; Inner conical surface can be opened when being with the air of pressure from the endoporus of hollow valve body lower end and form passage with sealing the sealing of boring;

For the ease of negative pressure shell processing and be convenient to accessory to load in negative pressure shell, described negative pressure shell create segmentation processing manufacture after assemblying body; The upper end of the circular cylindrical cavity part in negative pressure shell is divided into two sections of manufactures, the main body that upper part creates pump cover, lower part creates negative pressure shell of segmentation place, center hole is manufactured on pump cover, bleeder hole is manufactured on the middle part of the main body lower end of negative pressure shell, and being combined into after the main body after pump cover and negative pressure shell manufactures is a composite entity; Or, the lower end of the circular cylindrical cavity part in negative pressure shell is divided into two sections of manufactures, the main body that lower part creates pump cover, upper part creates negative pressure shell of segmentation place, bleeder hole is manufactured on the middle part of pump cover, center hole is manufactured on the middle part of the upper end of the main body of negative pressure shell, and being combined into after the main body of pump cover and negative pressure shell manufactures is a composite entity;

Answer magnetic piston to create columniform iron core, the periphery of columniform iron core creates smooth periphery, and smooth periphery manufactures the annular groove having depression, and annular groove is embedded with seal ring; Described periphery coordinates with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide in the inner chamber of negative pressure shell; The cylindrical central portion position of described columniform iron core manufactures penetration hole and receiving bore, receiving bore runs through the lower end surface of iron core, and penetration hole runs through above iron core, and receiving bore is manufactured on below penetration hole, receiving bore communicates with penetration hole and pumping chamber, and penetration hole communicates with squish chamber and receiving bore; Described penetration hole creates the top that upper part runs through the upper-end surface of iron core, lower part runs through the receiving bore of iron core lower part, the lower part of penetration hole creates vent, the upper part of penetration hole creates consent, and the intermediate portion between vent and consent creates closed hole; The receiving bore of depression on the manufacture of the lower end of columniform iron core is oriented, described receiving bore creates circular hole that communicate with vent, that upwards cave in, when answering the lower end in magnetic piston arrives negative pressure shell, receiving bore can hold restriction cap and restriction cap is not collided with answering magnetic piston; Manufacture on receiving bore and have vent, manufacturing above of vent has closed hole, and manufacturing above of closed hole has consent; Described vent creates the via hole allowing air pass through, and communicates with receiving bore and consent; Described consent creates the hole of installation and fixing fixed plug, communicates with receiving bore and squish chamber;

Described closed hole creates the hole of shallow cylindrical or shallow cone cylindricality, be manufactured on respectively the bleeder hole in the sealing neck of the lower end in negative pressure shell above and the upper-end surface of sealing neck form one-level rank and be manufactured on the rank of answering and forming one-level annular between the vent in magnetic piston and consent with consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality create hold sealing plate inner headed face or internal conical surface, the bottom surface of closed hole creates porose annular sealing surface below;

Sealing cone creates cone or cone cylinder, and the annular surface of cone or cone cylinder creates the male cone (strobilus masculinus) of tapering; The male cone (strobilus masculinus) of sealing cone and inner conical surface press down by sealing the gravity of boring self and seal inner conical surface when sealing;

Sealing plate creates circular flat board, and below dull and stereotyped, one side creates sealing surface, and sealing surface coordinates with the closed hole in sealing neck and coordinates with the closed hole of answering on magnetic piston respectively;

Restriction cap creates calotte, and the crown of calotte part manufactures the air passing hole allowing gas pass through, and the hatband partial fixing of calotte can limit the distance of moving on the sealing plate installed in sealing neck on sealing neck;

Field controller creates the controller controlling upper magnet and lower magnet and generate an electromagnetic field, control time and the time length generated an electromagnetic field that upper magnet and lower magnet generate an electromagnetic field and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time;

Upper magnet and lower magnet create the electromagnetic coil that can generate an electromagnetic field;

Exhaust tube creates and connects the bleeder hole of negative pressure shell and the hollow tubular of vacuum tank;

Bleeder hole create air enter the inner chamber of negative pressure shell through via hole, be manufactured on the lower part in center portion of sealing neck; The time in of not installing sealing plate in closed hole, the closed hole on the sealing neck of protecting crust lower end communicates with bleeder hole;

Keeping the shape of protecting crust to ensure protecting crust that the coil of upper magnet and lower magnet can be protected not to be damaged, in the inner chamber of protecting crust, manufacturing the skeleton having support;

Air in the pumping chamber promoting in negative pressure shell to enable to answer magnetic piston enters in squish chamber, and the electromagnetic field adopting lower magnet to produce answers magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as pulling;

In protecting crust, be provided with upper magnet and lower magnet, upper magnet is fixed on the upper part outside negative pressure shell, and lower magnet is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the outside protection upper magnet of negative pressure shell and the coil of lower magnet; Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile; Connect upper magnet to be connected with the circuit of field controller with the circuit of lower magnet, the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust; Be provided with in negative pressure shell sealing plate, limit cap, answer magnetic piston, fixed plug, can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; Be provided with sealing plate in closed hole in the sealing neck of the lower end in negative pressure shell, restriction cap is fixed on the outside of sealing neck by screw thread or jump ring, and when restriction cap is in the receiving bore of answering the lower end of magnetic piston upwards to cave in, restriction cap and receiving bore have gap; Sealing plate coordinates with the closed hole in sealing neck and can seal or open the passage of bleeding of the pumping chamber entered in negative pressure shell; When answering magnetic piston stroking upward, the inner chamber part of answering the negative pressure shell of magnetic piston lower part is pumping chamber; When answering magnetic descent of piston, the inner chamber part of the negative pressure shell of magnetic piston upper part is answered to be squish chamber; Be fixed with exhaust tube at the bleeder hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with bleeder hole and vacuum tank; Be provided with gas outlet valve in the upper end of negative pressure shell, the lower part of gas outlet valve is fixed in the center hole of the overlying one end of negative pressure shell, and the upper-end surface of negative pressure shell is exposed in the upper end of gas outlet valve.