CN105570067A

CN105570067A - Braking boosting energy-saving vacuum equipment

Info

Publication number: CN105570067A
Application number: CN201610082790.1A
Authority: CN
Inventors: 徐大钟
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-06
Filing date: 2016-02-06
Publication date: 2016-05-11

Abstract

The invention provides braking boosting energy-saving vacuum equipment, and belongs to the filed of automobile hydraulic braking vacuum boosting. An electromagnetic coil of the braking boosting energy-saving vacuum equipment is arranged outside a negative pressure case; a protection case is fixed on the negative pressure case; an air extraction pipe is fixed at the lower end of the negative pressure case; an air outlet valve is fixed in a center hole of the negative pressure case; an iron core spring and a magnetic induction piston are arranged in the negative pressure case; the iron core spring presses the magnetic induction piston; an air passing sealing plate seals an air extraction passage of an air extraction cavity; a sealing plate seals an air extraction passage of an air extrusion cavity; a fixing plug is fixed in a plug hole formed in the magnetic induction piston; and a sealing plate is arranged in a sealing hole of the magnetic induction piston. The braking boosting energy-saving vacuum equipment has the advantages that the structure is compact; the vibration is small; the electric energy utilization rate is high; the power is strong; the braking boosting energy-saving vacuum equipment is suitable to be used for installing vacuum boosting hydraulic braking electric automobiles and internal-combustion engine automobiles; after an internal-combustion engine stops operation, the vacuum can also be normally generated, and the vacuum boosting can be realized; the industrialization market prospects are good; the commercial value is high; and the manufacturing and the use are very convenient.

Description

Brake boost energy-saving vacuum equipment

Technical field

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

Background technique

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

Summary of the invention

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

For achieving the above object, brake boost energy-saving vacuum equipment of the present invention mainly comprise protecting crust, electromagnetic coil, negative pressure shell, bleeder hole, cross airtight shrouding, sealing plate, ball sealer or sealing cone, iron core spring, answer magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller, electronic remote controller; Or, mainly comprise protecting crust, electromagnetic coil, negative pressure shell, bleeder hole, cross airtight shrouding, sealing plate, ball sealer or sealing cone, iron core spring, answer magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller.

In protecting crust, be provided with electromagnetic coil, electromagnetic coil is fixed on the upper part outside negative pressure shell, and protecting crust is fixed on the outside protection electromagnetic coil on the top of negative pressure shell; 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.

The circuit connecting electromagnetic coil is connected with field controller, 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 the circuit connecting electromagnetic coil is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.

Airtight shrouding, iron core spring be installed in negative pressure shell, answered magnetic piston, sealing plate, fixed plug, iron core spring fitting is at the upper part of the inner chamber of negative pressure shell, magnetic piston is answered to be arranged on the lower part of the inner chamber of negative pressure shell, the top, upper end of iron core spring is pressed in the upper end of the inner chamber of negative pressure shell, lower end is pressed in the upper end portion of answering magnetic piston, answers magnetic piston can slide up and down in the inner chamber of negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; 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; The material that iron core spring adopts is the material of a type in metal and rubber or two types, and when adopting rubber material, iron core spring is the spring of hollow pipe-type, utilizes the elasticity of rubber and contractibility to realize the function of spring.

Described protecting crust is the hollow cavity of annular, hollow cavity there is string holes, the parts installed in field controller, electromagnetic coil and negative pressure shell and negative pressure shell are installed in hollow cavity, or, the parts installed in electronic remote controller, field controller, electromagnetic coil 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; Described annular sealing surface is the upper-end surface of protruding platform, is smooth, smooth planar annular, and the upper end of the protrusion platform in negative pressure shell 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, intermediate portion between vent and consent is closed hole, and closed hole communicates with vent and consent.Described vent is the via hole allowing air pass through, and below closed hole, communicates with pumping chamber and closed hole; Described consent is the hole of installation and fixing fixed plug, on closed hole, communicates with squish chamber and closed hole.

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

Described closed hole is the hole of shallow cylindrical or shallow cone cylindricality, the rank of one-level annular are formed with the bottom of consent between the vent of answering in magnetic piston and consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality be hold sealing plate inner headed face, the bottom surface of closed hole is annular sealing surface porose below.

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

Described field controller controls the controller that generates an electromagnetic field of electromagnetic coil, control time and the time length generated an electromagnetic field that electromagnetic field produces and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

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 the normal work of staff's brake activation assisting energy-saving vacuum equipment and cuts off the control circuit of brake boost energy-saving vacuum equipment; 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 brake boost energy-saving vacuum equipment 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 automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate in the closed hole on magnetic piston; When squish chamber exhaust, be arranged on that ball sealer on the internal taper hole of gas outlet valve or sealing cone utilize 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 sealing plate in the closed hole in magnetic piston to utilize the gravity of self to make sealing plate decline return and close and answer the passage of bleeding on magnetic piston to seal automatically.

In order to ensure that brake boost energy-saving vacuum equipment 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 electromagnetic coil 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, adopts iron core spring to answer magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as promotion.

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 electromagnetic coil generates an electromagnetic field, the attraction force that electromagnetic field produces pulls answers the pressure of magnetic piston overpowers iron core spring to move up, when answering magnetic piston to start up, be arranged on descending return under the effect of the gravity of answering the sealing plate in the closed hole in magnetic piston at self and close the passage that air enters squish chamber; 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.

Answer magnetic piston stroking upward move to the compression stage of compression iron core spring spacing time, the power-on circuit of field controller cutoff solenoid, electromagnetic field disappears, and answers magnetic piston descending under the promotion of iron core spring; 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, have the air of pressure to enter into from the vent of answering in magnetic piston to answer the closed hole in magnetic piston upwards to wash open to continue up after the sealing plate sealed with closed hole is shifted, enter after the vent in fixed plug in squish chamber.

Answer magnetic piston descending when putting in place under the promotion of iron core spring, be arranged on descending closed hole is shut under the effect of the gravity of answering the sealing plate in the closed hole in magnetic piston at self and make air not return pumping chamber, now, the power-on circuit that field controller connects again electromagnetic coil again generates an electromagnetic field and makes to answer magnetic piston stroking upward; The connection of circulation like this and cut off circuit, makes electromagnetic coil generate an electromagnetic field to pull to answer magnetic piston stroking upward and allow iron core spring promote to answer magnetic descent of piston, constantly the air in vacuum tank is extracted out and enter in air.

A manufacture method for brake boost energy-saving vacuum equipment, 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; Iron core spring adopts the material manufacture of a type in metal and rubber or two types, and when adopting rubber material to manufacture, iron core spring creates hollow tubular type spring, utilizes the elasticity of rubber and contractibility to realize the function of spring.

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, electromagnetic coil and negative pressure shell and negative pressure shell are installed in hollow cavity, or, the parts installed in electronic remote controller, field controller, electromagnetic coil 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, creates smooth, smooth planar annular, and the annular sealing surface protruding platform upper end 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, intermediate portion between vent and consent creates closed hole, and closed hole communicates with vent and consent.Described vent creates the via hole allowing air pass through, and is manufactured on below closed hole, communicates with pumping chamber and closed hole; Described consent creates the hole of installation and fixing fixed plug, is manufactured on above closed hole, communicates with squish chamber and closed hole.

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

Described closed hole creates the hole of circle or cone cylindricality, be manufactured on to answer between the vent in magnetic piston and consent and form the rank of one-level annular with the bottom of consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality create hold sealing plate inner headed face, the bottom surface of closed hole is annular sealing surface porose below.

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.

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

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 and controls the controller that generates an electromagnetic field of electromagnetic coil, control time that electromagnetic field produces and the time that generates an electromagnetic field length and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

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 electromagnetic coil, electromagnetic coil is fixed on the upper part outside negative pressure shell, and protecting crust is fixed on the outside protection electromagnetic coil on the top of negative pressure shell; 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.The circuit connecting electromagnetic coil is connected with field controller, 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 the circuit connecting electromagnetic coil is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.Airtight shrouding, iron core spring were installed in negative pressure shell, answered magnetic piston, ball sealer or sealing cone, fixed plug, iron core spring fitting is at the upper part of the inner chamber of negative pressure shell, magnetic piston is answered to be arranged on the lower part of the inner chamber of negative pressure shell, the top, upper end of iron core spring is pressed in the upper end of the inner chamber of negative pressure shell, lower end is pressed in the upper end portion of answering magnetic piston, answers magnetic piston can slide up and down in the inner chamber of negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; 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 compact structure of brake boost energy-saving vacuum equipment of the present invention, vibrate little, utilization rate of electrical is high, powerful, the electric vehicle and the internal-combustion engines vehicle that are applicable to the hydraulic braking of vacuum servo formula are installed and used, and also can produce vacuum normally and realize vacuum servo after internal-combustion engine shuts down; The market prospects of industrialization are good, commercial value is high, manufacture and use all very convenient.

Accompanying drawing explanation

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

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, iron core spring 6, answer magnetic piston 7, ball sealer 8 or sealing cone 8, fixed plug 10, cross airtight shrouding 11, passing hole 12, electromagnetic coil 13, annular sealing surface 14, sealing plate 15, vent 16, closed hole 17, consent 18.

Embodiment

Brake boost energy-saving vacuum equipment of the present invention mainly comprises protecting crust 1, electromagnetic coil 13, negative pressure shell 4, bleeder hole, crosses airtight shrouding 11, sealing plate 15, ball sealer 8 or seals cone 8, iron core spring 6, 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, electromagnetic coil 13, negative pressure shell 4, bleeder hole, cross airtight shrouding 11, sealing plate 15, ball sealer 8 or seal cone 8, iron core spring 6, answer magnetic piston 7, fixed plug 10, internal taper hole, vent 16, gas outlet valve, exhaust tube 3, field controller.

In protecting crust 1, be provided with electromagnetic coil 13, electromagnetic coil 13 is fixed on the upper part outside negative pressure shell 4, and protecting crust 1 is fixed on the outside protection electromagnetic coil 13 on the top of negative pressure shell 4; 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.

The circuit connecting electromagnetic coil 13 is connected with field controller, 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 the circuit connecting electromagnetic coil 13 is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust 1.

Airtight shrouding 11, iron core spring 6 were installed in negative pressure shell 4, answered magnetic piston 7, ball sealer 8 or sealing cone 8, fixed plug 10, iron core spring 6 is arranged on the upper part of the inner chamber of negative pressure shell 4, magnetic piston 7 is answered to be arranged on the lower part of the inner chamber of negative pressure shell 4, the top, upper end of iron core spring 6 is pressed in the upper end of the inner chamber of negative pressure shell 4, lower end is pressed in the upper end portion of answering magnetic piston 7, answers magnetic piston 7 can slide up and down in the inner chamber of negative pressure shell 4; In closed hole 17 below the consent 18 of answering in magnetic piston 7, sealing plate 15 is installed, sealing plate 15 can move up and down in closed hole 17, in consent 18, be provided with fixed plug 10 to limit displacement distance when sealing plate 15 moves up, the fixing employing interference fit of fixed plug 10 in consent 18 is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug 10 in consent 18; The passage of bleeding of answering on magnetic piston 7 can be closed when sealing surface below sealing plate 15 coordinates with the annular sealing surface 14 of closed hole 17 and seals, the passage of bleeding of answering on magnetic piston 7 when the sealing surface below sealing plate 15 separates with the annular sealing surface 14 of closed hole 17, can be opened; At the inside lower part of negative pressure shell 4, airtight shrouding 11 was installed to seal with the protrusion platform of the lower end in negative pressure shell 4; Cross airtight shrouding 11 coordinate with the annular sealing surface 14 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 11 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; Iron core spring 6 adopts the material manufacture of a type in metal and rubber or two types, and when adopting rubber material to manufacture, iron core spring 6 creates hollow tubular type spring, utilizes the elasticity of rubber and contractibility to realize the function of spring.

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, electromagnetic coil 13 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, electromagnetic coil 13 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 14, the inside of protruding platform creates bleeder hole, when airtight shrouding 11 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 14 protruding platform coordinates with one side below the airtight shrouding 11 of mistake; Described annular sealing surface 14 is manufactured on the upper-end surface of the protrusion platform in negative pressure shell 4, creates smooth, smooth planar annular, and the annular sealing surface 14 protruding platform upper end coordinates with the sealing surface crossed below airtight shrouding 11.

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, intermediate portion between vent 16 and consent 18 creates closed hole 17, and closed hole 17 communicates with vent 16 and consent 18.Described vent 16 creates the via hole allowing air pass through, and is manufactured on below closed hole 17, communicates with pumping chamber and closed hole 17; Described consent 18 creates the hole of installation and fixing fixed plug 10, is manufactured on above closed hole 17, communicates with squish chamber and closed hole 17.

Fixed plug 10 creates the plug that there is vent 16 centre, and described plug creates centre the cylinder of through hole or annular ring or jump ring circle, can limit the distance being arranged on and answering the sealing plate 15 in the closed hole 17 in magnetic piston 7 to move up; Fixed plug 10 creates centre when having a cylinder of through hole, and the fixing employing interference fit in consent 18 is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion cylinder in consent 18; When fixed plug 10 creates annular ring, the fixing employing interference fit in consent 18 is fixed or is adopted jump ring to be stuck in the two ends of the jump-ring slot internal fixtion annular ring in consent 18; When fixed plug 10 creates jump ring circle, directly jump ring is stuck in consent 18.

Described closed hole 17 creates the hole of shallow cylindrical or shallow cone cylindricality, be manufactured on to answer between the vent 16 in magnetic piston 7 and consent 18 and form the rank of one-level annular with the bottom of consent 18, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality creates the inner headed face holding sealing plate 15, and the bottom surface of closed hole 17 creates porose annular sealing surface 14 below.

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.

Sealing plate 15 creates circular flat board, and below dull and stereotyped, one side creates sealing surface, and sealing surface coordinates with the closed hole 17 of answering on magnetic piston 7.

Cross airtight shrouding 11 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 11 coordinates with the annular sealing surface 14 protruding platform upper end.

Field controller creates and controls the controller that generates an electromagnetic field of electromagnetic coil 13, control time that electromagnetic field produces and the time that generates an electromagnetic field length and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time.

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 electromagnetic coil 13 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, adopts iron core spring 6 to answer magnetic piston 7 to move down the power air in pumping chamber being clamp-oned squish chamber as promotion.

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 brake boost energy-saving vacuum equipment 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 11 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 automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate 15 in the closed hole 17 on magnetic piston 7; When squish chamber exhaust, being arranged on ball sealer 8 on the internal taper hole of gas outlet valve or sealing cone 8 utilizes the gravity of self to make ball sealer 8 or sealing cone 8 decline return and the passage 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 sealing plate 15 in the closed hole 17 in magnetic piston 7 to utilize the gravity of self to make sealing plate 15 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 electromagnetic coil 13 generates an electromagnetic field, the attraction force that electromagnetic field produces pulls the pressure of answering magnetic piston 7 to overcome iron core spring 6 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 sealing plate 15 in the closed hole 17 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 11 was moved in pull of vacuum suction made airtight shrouding 11 separate with the annular sealing surface 14 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 11 enters in the pumping chamber of answering below magnetic piston 7 in negative pressure shell 4.

When answering the up compression stage moving to compression iron core spring 6 of magnetic piston 7 spacing, the power-on circuit of field controller cutoff solenoid 13, electromagnetic field disappears, and answers magnetic piston 7 descending under the promotion of iron core spring 6; 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 11 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 to enter into from the vent 16 of answering in magnetic piston 7 answers the closed hole 17 in magnetic piston 7 upwards to wash open to continue after the sealing plate 15 sealed with closed hole 17 is shifted up, enters in squish chamber after the vent 16 in fixed plug 10.

Answer magnetic piston 7 descending when putting in place under the promotion of iron core spring 6, be arranged on and answer descending closed hole 17 is shut and make air not return pumping chamber under the effect of the gravity of self of the sealing plate 15 in the closed hole 17 in magnetic piston 7, now, the power-on circuit that field controller connects again electromagnetic coil 13 again generates an electromagnetic field and makes to answer magnetic piston 7 up; The connection of circulation like this and cut off circuit, makes electromagnetic coil 13 generate an electromagnetic field to pull to answer magnetic piston 7 up and allow iron core spring 6 promote to answer magnetic piston 7 descending, constantly the air in vacuum tank is extracted out and enter in air.

Claims

1. a brake boost energy-saving vacuum equipment, is characterized in that: described brake boost energy-saving vacuum equipment comprises protecting crust, electromagnetic coil, negative pressure shell, bleeder hole, crosses airtight shrouding, sealing plate, sealing cone, iron core spring, answer magnetic piston, fixed plug, internal taper hole, vent, gas outlet valve, exhaust tube, field controller;

In protecting crust, be provided with electromagnetic coil, electromagnetic coil is fixed on the upper part outside negative pressure shell, and protecting crust is fixed on the outside protection electromagnetic coil on the top of negative pressure shell; 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;

The circuit connecting electromagnetic coil is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust;

Airtight shrouding, iron core spring were installed in negative pressure shell, answered magnetic piston, sealing was bored, fixed plug, iron core spring fitting is at the upper part of the inner chamber of negative pressure shell, magnetic piston is answered to be arranged on the lower part of the inner chamber of negative pressure shell, the top, upper end of iron core spring is pressed in the upper end of the inner chamber of negative pressure shell, lower end is pressed in the upper end portion of answering magnetic piston, answers magnetic piston can slide up and down in the inner chamber of negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; 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, electromagnetic coil 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; Described annular sealing surface is the upper-end surface of protruding platform, is smooth, smooth planar annular, and the upper end of the protrusion platform in negative pressure shell 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, intermediate portion between vent and consent is closed hole, and closed hole communicates with vent and consent; Described vent is the via hole allowing air pass through, and below closed hole, communicates with pumping chamber and closed hole; Described consent is the hole of installation and fixing fixed plug, on closed hole, communicates with squish chamber and closed hole;

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

Described closed hole is the hole of shallow cylindrical or shallow cone cylindricality, the rank of one-level annular are formed with the bottom of consent between the vent of answering in magnetic piston and consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality be hold sealing plate inner headed face, the bottom surface of closed hole is annular sealing surface porose below;

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;

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

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 generates an electromagnetic field of electromagnetic coil, control time and the time length generated an electromagnetic field that electromagnetic field produces and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time;

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 brake boost energy-saving vacuum equipment 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 automatic decline return and close the passage of bleeding entered in squish chamber and seal under the effect of self gravitation of the sealing plate in the closed hole on magnetic piston; 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 sealing plate in the closed hole in magnetic piston to utilize the gravity of self to make sealing plate decline return and close and answer the passage of bleeding on magnetic piston to seal automatically;

During use, the power-on circuit of insulated electric conductor and field controller connected by teacher of the opening position key operation, the power-on circuit that field controller connects electromagnetic coil generates an electromagnetic field, the attraction force that electromagnetic field produces pulls answers the pressure of magnetic piston overpowers iron core spring to move up, when answering magnetic piston to start up, be arranged on descending return under the effect of the gravity of answering the sealing plate in the closed hole in magnetic piston at self and close the passage that air enters squish chamber; 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;

Answer magnetic piston stroking upward move to the compression stage of compression iron core spring spacing time, the power-on circuit of field controller cutoff solenoid, electromagnetic field disappears, and answers magnetic piston descending under the promotion of iron core spring; 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, have the air of pressure to enter into from the vent of answering in magnetic piston to answer the closed hole in magnetic piston upwards to wash open to continue up after the sealing plate sealed with closed hole is shifted, enter in squish chamber after the vent in fixed plug;

2. brake boost energy-saving vacuum equipment according to claim 1, it is characterized in that: the air in the pumping chamber promoting in negative pressure shell to enable to answer magnetic piston enters in squish chamber, adopts iron core spring to answer magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as promotion.

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

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

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

6. a manufacture method for brake boost energy-saving vacuum equipment, is characterized in that: during fabrication, answers magnetic piston 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; Iron core spring adopts the material manufacture of a type in metal and rubber or two types, and when adopting rubber material to manufacture, iron core spring creates hollow tubular type spring, utilizes the elasticity of rubber and contractibility to realize the function of spring;

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, electromagnetic coil 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, creates smooth, smooth planar annular, and the annular sealing surface protruding platform upper end 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, intermediate portion between vent and consent creates closed hole, and closed hole communicates with vent and consent; Described vent creates the via hole allowing air pass through, and is manufactured on below closed hole, communicates with pumping chamber and closed hole; Described consent creates the hole of installation and fixing fixed plug, is manufactured on above closed hole, communicates with squish chamber and closed hole;

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

Described closed hole creates the hole of shallow cylindrical or shallow cone cylindricality, be manufactured on to answer between the vent in magnetic piston and consent and form the rank of one-level annular with the bottom of consent, the face, hole in the hole of shallow columniform hole or shallow cone cylindricality create hold sealing plate inner headed face, the bottom surface of closed hole creates porose annular sealing surface below;

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;

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

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 and controls the controller that generates an electromagnetic field of electromagnetic coil, control time that electromagnetic field produces and the time that generates an electromagnetic field length and after generating an electromagnetic field at every turn to the interval time generated an electromagnetic field again for the second time;

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 electromagnetic coil 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, adopts iron core spring to answer magnetic piston to move down the power air in pumping chamber being clamp-oned squish chamber as promotion;

In protecting crust, be provided with electromagnetic coil, electromagnetic coil is fixed on the upper part outside negative pressure shell, and protecting crust is fixed on the outside protection electromagnetic coil on the top of negative pressure shell; 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; The circuit connecting electromagnetic coil is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust; Airtight shrouding, iron core spring were installed in negative pressure shell, answered magnetic piston, sealing was bored, fixed plug, iron core spring fitting is at the upper part of the inner chamber of negative pressure shell, magnetic piston is answered to be arranged on the lower part of the inner chamber of negative pressure shell, the top, upper end of iron core spring is pressed in the upper end of the inner chamber of negative pressure shell, lower end is pressed in the upper end portion of answering magnetic piston, answers magnetic piston can slide up and down in the inner chamber of negative pressure shell; Sealing plate is installed answering in the closed hole below the consent in magnetic piston, sealing plate can move up and down in closed hole, in consent, be provided with fixed plug to limit displacement distance when sealing plate moves up, the fixing employing interference fit of fixed plug in consent is fixed or screw-thread fit is fixed or adopt jump ring to be stuck in the two ends of the jump-ring slot internal fixtion fixed plug in consent; The passage of bleeding of answering on magnetic piston can be closed when sealing surface below sealing plate coordinates with the annular sealing surface of closed hole and seals, the passage of bleeding of answering on magnetic piston when the sealing surface below sealing plate separates with the annular sealing surface of closed hole, can be opened; 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.