CN105570071A

CN105570071A - Energy-saving electromagnetic brake-assisting vacuum-pumping pump

Info

Publication number: CN105570071A
Application number: CN201610082805.4A
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 electromagnetic brake-assisting vacuum-pumping pump belongs to the field of vacuum servo of automobile hydraulic braking; an upper magnet and a lower magnet of the energy-saving electromagnetic brake-assisting vacuum-pumping 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; air passing sealing plates seal an air extraction channel of an air extraction cavity, and an air extraction channel of an air squeezing cavity; a fixed plug is fixed in a plug hole of the magnetic piston, and a sealing cap is mounted on an annular sealing surface of the magnetic piston. The energy-saving electromagnetic brake-assisting vacuum-pumping 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

Energy-conservation brake boost vacuumizes electromagnetic pump

Technical field

The present invention relates to a kind of energy-conservation brake boost for producing vacuum power to the vacuum booster of the brake master cylinder of automobile and vacuumize electromagnetic pump.

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 a kind of manufacture and the method thereof that vacuum energy-conservation brake boost vacuumizes electromagnetic pump in order to provide electromagnetic linear to pull piston movement to bleed.

For achieving the above object, energy-conservation brake boost of the present invention vacuumize electromagnetic pump mainly comprise protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, cross airtight shrouding, ball sealer or sealing cone, answer magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller, electronic remote controller; Or, mainly comprise protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, cross airtight shrouding, ball sealer or sealing cone, answer 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.

Airtight shrouding was installed in negative pressure shell, answered magnetic piston, fixed plug, and can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; In the upper end surface of the protrusion platform of answering the lower part of the consent in magnetic piston, airtight shrouding was installed, in consent, be provided with fixed plug limited displacement distance when airtight shrouding 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; Cross airtight shrouding and be arranged on can moving up and down of the annular sealing surface of the upper end of the protrusion platform of answering in magnetic piston above, the passage of bleeding of answering on magnetic piston can be closed when the sealing surface crossed below airtight shrouding coordinates with annular sealing surface and seals, when the sealing surface crossed below airtight shrouding separates with annular sealing surface, the passage of bleeding of answering on magnetic piston can be opened; Seal at the protrusion platform of the lower end that the inside lower part of negative pressure shell was provided with in airtight shrouding and negative pressure shell; Cross airtight shrouding coordinate with the annular sealing surface protruding platform and can seal or open the passage of bleeding 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; The material crossing airtight shrouding adopts 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 protrusion platform protruding upward at the middle part of the lower end in negative pressure shell, the upper end portion of protruding platform is annular sealing surface, the inside of protruding platform is bleeder hole, pumping chamber when airtight shrouding was not installed in the upper end portion of protruding platform in negative pressure shell communicates with bleeder hole, and the annular sealing surface protruding platform coordinates with one side below the airtight shrouding of mistake.

The upper-end surface of the protrusion platform of described annular sealing surface respectively in negative pressure shell and in the sealing neck upper-end surface of answering magnetic piston, be smooth, smooth planar annular, annular sealing surface coordinates with the sealing surface crossed below airtight shrouding.

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; 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.The cylindrical central portion position of described columniform iron core has penetration hole to run through the upper and lower end face of iron core, the lower part of described penetration hole is vent, upper part is consent, vent communicates with consent, the protrusion platform of annular protruding upward is had in the bottom of consent, the endoporus protruding platform part is the upper part of vent, protruding the groove having annular between the outside of platform and the consent protruding platform part, annular groove enters squish chamber disperse the passing hole through crossing on airtight shrouding after the air buffer memory entered from vent after; The upper-end surface of described protrusion platform is smooth annular sealing surface.Described vent is the via hole allowing air pass through, and below annular sealing surface, communicates with pumping chamber and consent; Described consent is the hole of installation and fixing fixed plug, on protrusion platform and outside protrusion platform, communicates fixed with receiving bore and squish chamber.

Described fixed plug be limit the distance that moves up of the airtight shrouding of mistake that is arranged on the protrusion platform upper end of answering in magnetic piston, 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 annular sealing surface is the sealing surface of the flat smooth of ring, and annular sealing surface is respectively answering the upper end of the protrusion platform in magnetic piston and coordinate with the sealing surface crossed below airtight shrouding in the upper end of the protrusion platform of negative pressure shell.

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, when having suction on ball sealer or sealing cone, can open by suction the passage that inner conical surface and sphere or male cone (strobilus masculinus) seal; 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.

The profile of 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; Gravity by self when the male cone (strobilus masculinus) of sealing cone and inner conical surface seal presses down and seals inner conical surface.

The profile of described ball sealer is spherosome or oval ball, and the surface of spherosome or oval ball is smooth spherical, and spherical is sealing surface; Gravity by self when the spherical of ball sealer and inner conical surface seal presses down and seals inner conical surface.

The airtight shrouding of described mistake is circular flat board, and the part that below dull and stereotyped, one side coordinates with the upper end portion of protruding platform is sealing surface, and the part beyond the dull and stereotyped upper end portion with protruding platform coordinates has passing hole; The sealing surface crossing airtight shrouding is used for coordinating with the annular sealing surface protruding platform upper end, and passing hole is used for allowing air pass through.

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 energy-conservation brake boost and vacuumize the normal work of electromagnetic pump and cut off the control circuit that energy-conservation brake boost vacuumizes electromagnetic 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, protruding the center portion of platform, bleeder hole communicates with the inner chamber of negative pressure shell.

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 energy-conservation brake boost vacuumizes electromagnetic 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 opened airtight shrouding of the suction of answering magnetic piston stroking upward to produce and the sealing of protruding platform and open the passage of bleeding, be arranged on and answer the airtight shrouding of the mistake on the annular sealing surface on magnetic piston automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation; When squish chamber exhaust, be arranged on that ball sealer on the internal taper hole of gas outlet valve or sealing cone utilize that the gravity of self makes ball sealer or the sealing automatic decline return of cone and the passage going out air of closing on gas outlet valve seals, answer magnetic descent of piston and make to produce pumping chamber in pressure and promote ball sealer or the up passage of bleeding entered in squish chamber of then opening is bored in sealing; When squish chamber goes out air, 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 air of gas outlet valve, be arranged on and answer the airtight shrouding of the mistake on the annular sealing surface on magnetic piston to utilize the gravity of self to make airtight shrouding decline return and close and answer the passage of bleeding on magnetic piston to seal automatically.

In order to ensure that energy-conservation brake boost vacuumizes electromagnetic pump and 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, be arranged on and answer the airtight shrouding of the mistake on the annular sealing surface in magnetic piston descending return and close the passage that air enters squish chamber under the effect of the gravity of 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, airtight shrouding was moved in pull of vacuum suction made airtight shrouding separate with the annular sealing surface protruding platform, air in vacuum tank to enter into through bleeder hole from exhaust tube and protrudes platform, then the passing hole of passing through on airtight shrouding 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 the airtight shrouding of mistake under the effect of self gravitation and in vacuum tank on the protrusion platform upper-end surface 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, having the air of pressure upwards to wash open from the annular sealing surface that the vent of answering in magnetic piston enters into the protrusion platform upper end of answering in magnetic piston continues up after the airtight shrouding of mistake sealed with annular sealing surface is shifted, enter in squish chamber after the passing hole on the airtight shrouding of mistake after the vent in fixed plug again.

Answer magnetic piston when the gravitation of the electromagnetic field that lower magnet produces pulls descending putting in place, be arranged on the airtight shrouding of mistake on the upper-end surface of the protrusion platform of answering in magnetic piston descending annular sealing surface is shut and make air not return pumping chamber under the effect of the gravity of self, 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.

Energy-conservation brake boost vacuumizes a manufacture method for electromagnetic pump, it 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; Cross the material manufacture that airtight shrouding adopts a type in metal, plastics, nylon and glass fibre reinforced plastics or 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 protrusion platform protruding upward, the upper end portion of protruding platform creates annular sealing surface, the inside of protruding platform creates bleeder hole, when airtight shrouding was not installed in the upper end portion of protruding platform, pumping chamber in negative pressure shell communicates with bleeder hole, and the annular sealing surface protruding platform coordinates with one side below the airtight shrouding of mistake.

Described annular sealing surface is manufactured on the upper-end surface of the protrusion platform in negative pressure shell respectively and is manufactured on the sealing neck upper-end surface of answering magnetic piston, creates smooth, smooth planar annular, and annular sealing surface coordinates with the sealing surface crossed below airtight shrouding.

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; 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 the penetration hole having the upper and lower end face running through iron core, the lower part of described penetration hole creates vent, upper part creates consent, the protrusion platform having annular protruding upward is manufactured in the bottom of consent, the endoporus protruding platform part manufactures the upper part of vent, protruding the groove manufacturing annular between the outside of platform and the consent protruding platform part, annular groove enters squish chamber disperse the passing hole through crossing on airtight shrouding after the air buffer memory entered from vent after; The upper-end surface of described protrusion platform creates smooth annular sealing surface.Described vent creates the via hole allowing air pass through, and is manufactured on below annular sealing surface, communicates with pumping chamber and consent; Described consent creates installation and the hole of fixing fixed plug, be manufactured on protrude platform above and protrude outside platform, communicate with receiving bore and squish chamber fixed.

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 that the airtight shrouding of mistake that is arranged on the protrusion platform upper end of answering in magnetic piston moves 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 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, when having suction on ball sealer or sealing cone, can open by suction the passage that inner conical surface and sphere or male cone (strobilus masculinus) seal; 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.

Sealing cone creates cone or cone cylinder, and the annular surface of cone or cone cylinder creates the male cone (strobilus masculinus) of tapering; Gravity by self when the male cone (strobilus masculinus) of sealing cone and inner conical surface seal presses down and seals inner conical surface.

The profile of ball sealer creates spherosome or oval ball, and the surface of spherosome or oval ball creates smooth spherical, and spherical is sealing surface; Gravity by self when the spherical of ball sealer and inner conical surface seal presses down and seals inner conical surface.

Cross airtight shrouding and create circular flat board, the part that below dull and stereotyped, one side coordinates with the upper end portion of protruding platform creates sealing surface, and the part beyond the dull and stereotyped upper end portion with protruding platform coordinates manufactures the passing hole allowing gas pass through; The sealing surface crossing airtight shrouding coordinates with the annular sealing surface protruding platform upper end.

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 and protrude the center portion of platform, bleeder hole communicates with the inner chamber of negative pressure shell.

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.

Airtight shrouding was installed in negative pressure shell, answered magnetic piston, fixed plug, and can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; In the upper end surface of the protrusion platform of answering the lower part of the consent in magnetic piston, airtight shrouding was installed, in consent, be provided with fixed plug limited displacement distance when airtight shrouding 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; Cross airtight shrouding and be arranged on can moving up and down of the annular sealing surface of the upper end of the protrusion platform of answering in magnetic piston above, the passage of bleeding of answering on magnetic piston can be closed when the sealing surface crossed below airtight shrouding coordinates with annular sealing surface and seals, when the sealing surface crossed below airtight shrouding separates with annular sealing surface, the passage of bleeding of answering on magnetic piston can be opened; Seal at the protrusion platform of the lower end that the inside lower part of negative pressure shell was provided with in airtight shrouding and negative pressure shell; Cross airtight shrouding coordinate with the annular sealing surface protruding platform and can seal or open the passage of bleeding 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 energy-conservation brake boost of the present invention vacuumize electromagnetic pump compact structure, 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 that energy-conservation brake boost vacuumizes electromagnetic 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, cross airtight shrouding 11, passing hole 12, upper magnet 13, consent 14, annular sealing surface 15, vent 16.

Embodiment

The energy-conservation brake boost of the present invention vacuumizes electromagnetic pump and mainly comprises protecting crust 1, upper magnet 13, lower magnet 6, negative pressure shell 4, bleeder hole, crosses airtight shrouding 1111, ball sealer 8 or sealing cone 8, answers magnetic piston 7, fixed plug 10, internal taper hole, vent 16, gas outlet valve, exhaust tube 3, field controller, electronic remote controller; Or, mainly comprise protecting crust 1, upper magnet 13, lower magnet 6, negative pressure shell 4, bleeder hole, cross airtight shrouding 1111, ball sealer 8 or sealing cone 8, 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.

Airtight shrouding 1111 was installed in negative pressure shell 4, answered 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 the upper end surface of the protrusion platform of the lower part of the consent 18 of answering in magnetic piston 7, airtight shrouding 1111 was installed, in consent 18, be provided with fixed plug 10 limited displacement distance when airtight shrouding 1111 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; Cross airtight shrouding 1111 and be arranged on can moving up and down of the annular sealing surface 15 of the upper end of the protrusion platform of answering in magnetic piston 7 above, the passage of bleeding of answering on magnetic piston 7 can be closed when the sealing surface crossed below airtight shrouding 1111 coordinates with annular sealing surface 15 and seals, when the sealing surface crossed below airtight shrouding 1111 separates with annular sealing surface 15, the passage of bleeding of answering on magnetic piston 7 can be opened; At the inside lower part of negative pressure shell 4, airtight shrouding 1111 was installed to seal with the protrusion platform of the lower end in negative pressure shell 4; Cross airtight shrouding 1111 coordinate with the annular sealing surface 15 protruding platform and can seal or open the passage of bleeding 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; Cross the material manufacture that airtight shrouding 1111 adopts 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 protrusion platform protruding upward, the upper end portion of protruding platform creates annular sealing surface 15, the inside of protruding platform creates bleeder hole, when airtight shrouding 1111 was not installed in the upper end portion of protruding platform, pumping chamber in negative pressure shell 4 communicates with bleeder hole, and the annular sealing surface 15 protruding platform coordinates with one side below the airtight shrouding 1111 of mistake.

Described annular sealing surface 15 is manufactured on the upper-end surface of the protrusion platform in negative pressure shell 4 respectively and is manufactured on the sealing neck upper-end surface of answering magnetic piston 7, create smooth, smooth planar annular, annular sealing surface 15 coordinates with the sealing surface crossed below airtight shrouding 1111.

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; 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 the penetration hole having the upper and lower end face running through iron core, the lower part of described penetration hole creates vent 16, upper part creates consent 18, the protrusion platform having annular protruding upward is manufactured in the bottom of consent 18, the endoporus protruding platform part manufactures the upper part of vent 16, protruding the groove manufacturing annular between the outside of platform and the consent 18 protruding platform part, the groove of annular is used for entering squish chamber after the passing hole 12 of disperseing after the air buffer memory that vent 16 enters through crossing airtight shrouding 1111, the upper-end surface of described protrusion platform creates smooth annular sealing surface 15.Described vent 16 creates the via hole allowing air pass through, and is manufactured on below annular sealing surface 15, communicates with pumping chamber and consent 18; Described consent 18 creates installation and the hole of fixing fixed plug 10, be manufactured on protrude platform above and protrude outside platform, communicate with receiving bore and squish chamber fixed.

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 that the airtight shrouding 1111 of mistake that is arranged on the protrusion platform upper end of answering in magnetic piston 7 moves 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 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, when having suction on ball sealer 8 or sealing cone 8, can open by suction the passage that inner conical surface and sphere or male cone (strobilus masculinus) seal; 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.

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; Gravity by self when the male cone (strobilus masculinus) of sealing cone 8 and inner conical surface seal presses down and seals inner conical surface.

The profile of ball sealer 8 creates spherosome or oval ball, and the surface of spherosome or oval ball creates smooth spherical, and spherical is sealing surface; Gravity by self when the spherical of ball sealer 8 and inner conical surface seal presses down and seals inner conical surface.

Cross airtight shrouding 1111 and create circular flat board, the part that below dull and stereotyped, one side coordinates with the upper end portion of protruding platform creates sealing surface, and the part beyond the dull and stereotyped upper end portion with protruding platform coordinates manufactures the passing hole 12 allowing gas pass through; The sealing surface crossing airtight shrouding 1111 coordinates with the annular sealing surface 15 protruding platform upper end.

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 and protrude the center portion of platform, bleeder hole communicates with the inner chamber of negative pressure shell 4.

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 energy-conservation brake boost vacuumizes electromagnetic 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 opened airtight shrouding 1111 of the suction of the up generation of magnetic piston 7 and the sealing of protruding platform and open the passage of bleeding, being arranged on and answering the airtight shrouding 1111 of the mistake on the annular sealing surface 15 on magnetic piston 7 automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation; 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 going out air of closing on gas outlet valve seals automatically, answers magnetic piston 7 descending and makes to produce pressure pumping chamber in and promote ball sealer 8 or seal the up passage of bleeding entered in squish chamber of then opening of cone 8; When squish chamber goes out air, 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 air of gas outlet valve, be arranged on and answer the airtight shrouding of mistake 1111 on the annular sealing surface 15 on magnetic piston 7 to utilize the gravity of self to make airtight shrouding 1111 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 descending return and close the passage that air enters squish chamber under the effect of the gravity of self of the airtight shrouding of mistake 1111 on the annular sealing surface 15 in magnetic piston 7; 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, airtight shrouding 1111 was moved in pull of vacuum suction made airtight shrouding 1111 separate with the annular sealing surface 15 protruding platform, air in vacuum tank to enter into through bleeder hole from exhaust tube 3 and protrudes platform, then the passing hole 12 of passing through on airtight shrouding 1111 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 the airtight shrouding of mistake 1111 under the effect of self gravitation and in vacuum tank on the protrusion platform upper-end surface 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, having the air of pressure upwards to wash open from the annular sealing surface 15 that the vent 16 of answering in magnetic piston 7 enters into the protrusion platform upper end of answering in magnetic piston 7 continues up after the airtight shrouding of mistake 1111 sealed with annular sealing surface 15 is shifted, enter in squish chamber after crossing the passing hole 12 on airtight shrouding 1111 after the vent 16 in fixed plug 10 again.

Answer magnetic piston 7 when the gravitation of the electromagnetic field that lower magnet 6 produces pulls descending putting in place, be arranged on the airtight shrouding of mistake 1111 on the upper-end surface of the protrusion platform of answering in magnetic piston 7 descending annular sealing surface 15 is shut and make air not return pumping chamber under the effect of the gravity of self, 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. energy-conservation brake boost vacuumizes an electromagnetic pump, it is characterized in that: described energy-conservation brake boost vacuumizes electromagnetic pump and comprises protecting crust, upper magnet, lower magnet, negative pressure shell, bleeder hole, crosses airtight shrouding, sealing cone, 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;

Airtight shrouding was installed in negative pressure shell, answered magnetic piston, fixed plug, and can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; In the upper end surface of the protrusion platform of answering the lower part of the consent in magnetic piston, airtight shrouding was installed, in consent, be provided with fixed plug limited displacement distance when airtight shrouding 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; Cross airtight shrouding and be arranged on can moving up and down of the annular sealing surface of the upper end of the protrusion platform of answering in magnetic piston above, the passage of bleeding of answering on magnetic piston can be closed when the sealing surface crossed below airtight shrouding coordinates with annular sealing surface and seals, when the sealing surface crossed below airtight shrouding separates with annular sealing surface, the passage of bleeding of answering on magnetic piston can be opened; Seal at the protrusion platform of the lower end that the inside lower part of negative pressure shell was provided with in airtight shrouding and negative pressure shell; Cross airtight shrouding coordinate with the annular sealing surface protruding platform and can seal or open the passage of bleeding 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 protrusion platform protruding upward at the middle part of the lower end in negative pressure shell, the upper end portion of protruding platform is annular sealing surface, the inside of protruding platform is bleeder hole, pumping chamber when airtight shrouding was not installed in the upper end portion of protruding platform in negative pressure shell communicates with bleeder hole, and the annular sealing surface protruding platform coordinates with one side below the airtight shrouding of mistake;

The upper-end surface of the protrusion platform of described annular sealing surface respectively in negative pressure shell and in the sealing neck upper-end surface of answering magnetic piston, be smooth, smooth planar annular, annular sealing surface coordinates with the sealing surface crossed below airtight shrouding;

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; 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; The cylindrical central portion position of described columniform iron core has penetration hole to run through the upper and lower end face of iron core, the lower part of described penetration hole is vent, upper part is consent, vent communicates with consent, the protrusion platform of annular protruding upward is had in the bottom of consent, the endoporus protruding platform part is the upper part of vent, protruding the groove having annular between the outside of platform and the consent protruding platform part, annular groove enters squish chamber disperse the passing hole through crossing on airtight shrouding after the air buffer memory entered from vent after; The upper-end surface of described protrusion platform is smooth annular sealing surface; Described vent is the via hole allowing air pass through, and below annular sealing surface, communicates with pumping chamber and consent; Described consent is the hole of installation and fixing fixed plug, on protrusion platform and outside protrusion platform, communicates fixed with receiving bore and squish chamber;

Described fixed plug be limit the distance that moves up of the airtight shrouding of mistake that is arranged on the protrusion platform upper end of answering in magnetic piston, 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 annular sealing surface is the sealing surface of the flat smooth of ring, and annular sealing surface is respectively answering the upper end of the protrusion platform in magnetic piston and coordinate with the sealing surface crossed below airtight shrouding in the upper end of the protrusion platform of negative pressure shell;

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, when having suction on sealing is bored, can open by suction the passage that inner conical surface and male cone (strobilus masculinus) seal; Sealing cone air pressure is above larger, and sealing cone is better with the gluing, sealing effect of inner conical surface;

The profile of 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; Gravity by self when the male cone (strobilus masculinus) of sealing cone and inner conical surface seal presses down and seals inner conical surface;

The airtight shrouding of described mistake is circular flat board, and the part that below dull and stereotyped, one side coordinates with the upper end portion of protruding platform is sealing surface, and the part beyond the dull and stereotyped upper end portion with protruding platform coordinates has passing hole; The sealing surface crossing airtight shrouding is used for coordinating with the annular sealing surface protruding platform upper end, and passing hole is used for allowing air pass through;

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, protruding the center portion of platform, bleeder hole communicates with the inner chamber of negative pressure shell;

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 energy-conservation brake boost vacuumizes electromagnetic 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 opened airtight shrouding of the suction of answering magnetic piston stroking upward to produce and the sealing of protruding platform and open the passage of bleeding, be arranged on and answer the airtight shrouding of the mistake on the annular sealing surface on magnetic piston automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation; When squish chamber exhaust, the sealing cone be arranged on the internal taper hole of gas outlet valve utilize the gravity of self to make automatic decline return is bored in sealing and the passage going out air of closing on gas outlet valve seals, answer magnetic descent of piston and make to produce pumping chamber in pressure and promote sealing and bore the up passage of bleeding entered in squish chamber of then opening; When squish chamber goes out air, under the effect of outlet pressure, promote sealing cone on the internal taper hole of gas outlet valve up and open the passage air of gas outlet valve, being arranged on and answering the airtight shrouding of the mistake on the annular sealing surface on magnetic piston to utilize the gravity of self to make airtight shrouding 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, be arranged on and answer the airtight shrouding of the mistake on the annular sealing surface in magnetic piston descending return and close the passage that air enters squish chamber under the effect of the gravity of 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, airtight shrouding was moved in pull of vacuum suction made airtight shrouding separate with the annular sealing surface protruding platform, air in vacuum tank to enter into through bleeder hole from exhaust tube and protrudes platform, then the passing hole of passing through on airtight shrouding 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 the airtight shrouding of mistake under the effect of self gravitation and in vacuum tank on the protrusion platform upper-end surface of lower end in negative pressure shell and close the bleed-off passage entering pumping chamber, sealing in gas outlet valve is bored descending return under the effect of the gravity of self and seals the inner conical surface of gas outlet valve, has 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, having the air of pressure upwards to wash open from the annular sealing surface that the vent of answering in magnetic piston enters into the protrusion platform upper end of answering in magnetic piston continues up after the airtight shrouding of mistake sealed with annular sealing surface is shifted, enter in squish chamber after the passing hole on the airtight shrouding of mistake after the vent in fixed plug again;

2. energy-conservation brake boost according to claim 1 vacuumizes electromagnetic pump, 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.

3. energy-conservation brake boost according to claim 1 vacuumizes electromagnetic pump, it 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.

4. energy-conservation brake boost according to claim 1 vacuumizes electromagnetic pump; it 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, in the inner chamber of protecting crust, manufacturing the skeleton having support.

5. energy-conservation brake boost according to claim 1 vacuumizes electromagnetic pump, it is characterized in that: described energy-conservation brake boost vacuumizes the compact structure of electromagnetic pump, it is little to vibrate, 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. energy-conservation brake boost vacuumizes a manufacture method for electromagnetic pump, it 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 protrusion platform protruding upward, the upper end portion of protruding platform creates annular sealing surface, the inside of protruding platform creates bleeder hole, when airtight shrouding was not installed in the upper end portion of protruding platform, pumping chamber in negative pressure shell communicates with bleeder hole, and the annular sealing surface protruding platform coordinates with one side below the airtight shrouding of mistake;

Described annular sealing surface is manufactured on the upper-end surface of the protrusion platform in negative pressure shell respectively and is manufactured on the sealing neck upper-end surface of answering magnetic piston, creates smooth, smooth planar annular, and annular sealing surface coordinates with the sealing surface crossed below airtight shrouding;

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; 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 the penetration hole having the upper and lower end face running through iron core, the lower part of described penetration hole creates vent, upper part creates consent, the protrusion platform having annular protruding upward is manufactured in the bottom of consent, the endoporus protruding platform part manufactures the upper part of vent, protruding the groove manufacturing annular between the outside of platform and the consent protruding platform part, annular groove enters squish chamber disperse the passing hole through crossing on airtight shrouding after the air buffer memory entered from vent after; The upper-end surface of described protrusion platform creates smooth annular sealing surface; Described vent creates the via hole allowing air pass through, and is manufactured on below annular sealing surface, communicates with pumping chamber and consent; Described consent creates installation and the hole of fixing fixed plug, be manufactured on protrude platform above and protrude outside platform, communicate with receiving bore and squish chamber fixed;

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 that the airtight shrouding of mistake that is arranged on the protrusion platform upper end of answering in magnetic piston moves 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 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, can open by suction the passage that inner conical surface and male cone (strobilus masculinus) seal when sealing and having suction above cone; Sealing cone air pressure is above larger, and sealing cone is better with the gluing, sealing effect of inner conical surface;

The profile of sealing cone creates cone or cone cylinder, and the annular surface of cone or cone cylinder creates the male cone (strobilus masculinus) of tapering; Gravity by self when the male cone (strobilus masculinus) of sealing cone and inner conical surface seal presses down and seals inner conical surface;

Cross airtight shrouding and create circular flat board, the part that below dull and stereotyped, one side coordinates with the upper end portion of protruding platform creates sealing surface, and the part beyond the dull and stereotyped upper end portion with protruding platform coordinates manufactures the passing hole allowing gas pass through; The sealing surface crossing airtight shrouding coordinates with the annular sealing surface protruding platform upper end;

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 and protrude the center portion of platform, bleeder hole communicates with the inner chamber of negative pressure shell;

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; Airtight shrouding was installed in negative pressure shell, answered magnetic piston, fixed plug, and can slide up and down in the inner chamber of answering magnetic piston to be arranged on negative pressure shell; In the upper end surface of the protrusion platform of answering the lower part of the consent in magnetic piston, airtight shrouding was installed, in consent, be provided with fixed plug limited displacement distance when airtight shrouding 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; Cross airtight shrouding and be arranged on can moving up and down of the annular sealing surface of the upper end of the protrusion platform of answering in magnetic piston above, the passage of bleeding of answering on magnetic piston can be closed when the sealing surface crossed below airtight shrouding coordinates with annular sealing surface and seals, when the sealing surface crossed below airtight shrouding separates with annular sealing surface, the passage of bleeding of answering on magnetic piston can be opened; Seal at the protrusion platform of the lower end that the inside lower part of negative pressure shell was provided with in airtight shrouding and negative pressure shell; Cross airtight shrouding coordinate with the annular sealing surface protruding platform and can seal or open the passage of bleeding 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.