CN205876644U - Electronic air pump of cylinder body miniature booster -type of direction - Google Patents

Electronic air pump of cylinder body miniature booster -type of direction Download PDF

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Publication number
CN205876644U
CN205876644U CN201620778062.XU CN201620778062U CN205876644U CN 205876644 U CN205876644 U CN 205876644U CN 201620778062 U CN201620778062 U CN 201620778062U CN 205876644 U CN205876644 U CN 205876644U
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CN
China
Prior art keywords
cylinder
level
valve
grades
check valve
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Application number
CN201620778062.XU
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Chinese (zh)
Inventor
黄智勇
刘忻
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北京康斯特仪表科技股份有限公司
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Priority to CN201620778062.XU priority Critical patent/CN205876644U/en
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Publication of CN205876644U publication Critical patent/CN205876644U/en

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Abstract

The utility model relates to an electronic air pump of cylinder body miniature booster -type of direction, including pump body seat, eccentric shaft, connecting rod, one -level cylinder body, the second -level cylinder body, piston rod, wherein the second -level cylinder body is small in the volume of one -level cylinder body, and a piston rod both ends head divides locates pipeline intercommunication between two cylinder bodies and two cylinder bodies. The utility model discloses electronic air pump can realize that the continuous pressure boost delivery pressure of two -stage is gaseous through the two -stage cylinder body, coordinates the direction between the piston and the second -level cylinder body, has improved the life of air pump, and gas piping, valve body etc. Are built -in the distribution in the pedestal all, and compact structure realizes design of whole miniaturation and automated control, is suitable for the atmospheric pressure source of inspection of conduct pressure instrument or the output of other pressure.

Description

A kind of cylinder body guide miniature booster-type electric air pump
Technical field
This utility model belongs to manometer inspection technology field, relates to a kind of electric air pump, and being specifically related to one can Produce pressed gas, miniature booster-type electric air pump for manometer.
Background technology
During using Portable pressure calibrating instrument device calibrating gas pressure instrument, need the pressure with certain pressure Contracting air examines and determine manometer as medium.The compressed air of traditional approach is originated mainly two ways: Portable manual gas Pump pressurizes or carries gas cylinder.Hand air pump is mainly used in Manual pressure instrument calibration device, normal in order to complete Verification process, operator need constantly to operate hand air pump and guarantee that verification process has enough compressed airs to produce, and this is one The muscle power work that item is heavy, has had a strong impact on the efficiency of calibration operation.Along with the raising of industrial automatization, occur in that gas Manometer automatic calibrator, uses gas cylinder to provide compressed air for assay device, but gas cylinder finite capacity, body Long-pending huge, it is difficult to carrying, brings inconvenience to the calibration operation of site pressure instrument, more cannot meet industry spot automatic The needs of calibrating manometer.Make a kind of trend that presses to subsequently with electric air pump, but existing electric air pump is industry stream greatly , there is the shortcomings such as volume is big, weight is big, power consumption is big, startability with pressure difference, it is impossible to meet pressure calibration industry to little in amount design Flow needs, and seriously governs portable or hand-held manometer automatic calibrator to automatization, miniaturization, Highgrade integration The direction of development.
It is therefore desirable to design a kind of Miniature electric air pump that pressure can be made to increase, to meet automatization, miniaturization, height Spend the demand of integrated manometer automatic calibrator.
Utility model content
The purpose of this utility model is to solve the problems referred to above, it is provided that a kind of compact conformation, volume are little, automaticity Cylinder body guide miniature booster-type electric air pump high, that gas pressure can be made to increase and increase the service life.
Above-mentioned purpose of the present utility model is realized by techniques below scheme:
A kind of cylinder body guide miniature booster-type electric air pump, the motor cabinet being connected with pump housing seat including pump housing seat and motor, The connecting rod, one-level cylinder body, the secondary cylinder body that are interlocked by the eccentric shaft of driven by motor and eccentric shaft, it is located in one-level cylinder body and two grades Piston rod synchronization-moving with connecting rod and be located at multiple check valves of two cylinder body outer ends, wherein among cylinder body:
The two ends of described pump housing seat (08) form one-level cylinder body (081) and secondary cylinder body supports seat (082), secondary cylinder body (06) be assemblied in secondary cylinder body support seat (082) inner side and with one-level cylinder body (081) coaxial line;Secondary cylinder body (06) volume is less than The volume of one-level cylinder body (081), and two grades of air-breathings of the one-level gas exhaust piping (17) of one-level cylinder body (081) and secondary cylinder body (06) Pipeline (20) connects;
Piston rod (10) two ends set piston one-level end (101) and two grades of ends (102) of piston, piston one-level end and one-level cylinder body (081) coordinating, two grades of ends of piston coordinate with secondary cylinder body in stretching into secondary cylinder body (06).
Cylinder body guide miniature booster-type electric air pump as mentioned above, described secondary cylinder body (06) is hollow cylinder, inner interior Surface is provided with First terrace (062), and the second combination seal (07) is assemblied in this First terrace (062) place, pump housing seat (08) this second combination seal (07) is supported in side.
Cylinder body guide miniature booster-type electric air pump as mentioned above, described First terrace (062) makes described secondary cylinder The inner surface of body (06) forms the first order through hole (061) and second level through hole (066), first order through hole (061) communicated with each other Diameter more than the diameter of second level through hole (066), the inner surface of first order through hole (061), First terrace (062) and live Two grades of end (102) outer surfaces of the piston of stopper rod (10) are collectively forming an annular groove, place the second combination close in this annular groove Sealing (07).Described First terrace is perpendicular to the axial of secondary cylinder body (06).
Cylinder body guide miniature booster-type electric air pump as mentioned above, pump housing seat (08) is provided with secondary cylinder body (06) junction A pair protuberance (083) the most corresponding is used for keeping out the second combination seal (07).
Cylinder body guide miniature booster-type electric air pump as mentioned above, the outer end outer surface of described secondary cylinder body (06) at least sets Having second step face (063), a sealing ring (28) to be connected to this second step face (063), this is supported in the side of motor cabinet (04) Sealing ring (28).
Or, the outer end outer surface of described secondary cylinder body (06) is provided with the 3rd step surface (064) and the 4th step surface (065) Two-stage step, sealing ring (28) is connected to the 3rd step surface (064), the side of motor cabinet (04) support this sealing ring (28) with And the 4th step surface (065).The central shaft distance of the 3rd step surface (064) distance secondary cylinder body (06) is less than the 4th step surface (065) distance of the central shaft of distance secondary cylinder body (06).
Cylinder body guide miniature booster-type electric air pump as mentioned above, the face area of piston one-level end (101) is more than piston The face area of two grades of ends (102), the axial cross section area of corresponding one-level cylinder body (081) is more than the axle of secondary cylinder body (06) To cross-sectional area.
One-level cylinder body (081) outer end is sequentially provided with the one-level breather cheek valve (15) and of cylinder body pad (12), reverse-fitting Level exhaust check valve (16) and end cap (13), one-level breather cheek valve (15) and one-level exhaust check valve (16) and one-level cylinder body (081) inner space, one-level suction line (14) on end cap (13) connect ambient atmos and with one-level breather cheek valve (15) Being connected, the one-level gas exhaust piping (17) on end cap (13) is connected with one-level exhaust check valve (16), and by a transition conduit Road (19) connects with two grades of suction line (20) of secondary cylinder body (06).
Secondary cylinder body (06) outer end is arranged with two grades of suction line (20) and secondary exhaust pipeline (22), two grades of suction line (20) two grades of breather cheek valves (21) for controlling air inlet, the one-level gas exhaust piping of one-level cylinder body (081) are installed before entrance (17) connected with two grades of suction line (20) by two grades of breather cheek valves (21) of a transition pipe (19) and this;Secondary exhaust Road (22) outlet is installed for controlling the secondary exhaust check valve (23) given vent to anger.
Cylinder body guide miniature booster-type electric air pump as mentioned above, also sets a pressing plate (18), and lid crimping is together in one-level cylinder body (081) end cap (13), pump housing seat (08) and motor cabinet (02) upper end by two grades of breather cheek valves of secondary cylinder body (06) (21) compress with secondary exhaust check valve (23);Described transition pipe (19) is built in pressing plate (18).
As mentioned above cylinder body guide miniature booster-type electric air pump, eccentric shaft (04) be provided with the groove coaxial with motor shaft with And the driving handle (041) of reverse disalignment, the motor shaft of motor (01) extend in this groove, and driving handle (041) connects water One end of the flat connecting rod (05) arranged;Connecting rod (05) other end is connected by the pin (09) of vertical setting the water of distance with it Square to piston rod (10).
One-level breather cheek valve (15) in this utility model, one-level exhaust check valve (16), two grades of breather cheek valves (21) and secondary exhaust check valve (23) is identical structure, this check valve includes check valve body (25) and check valve body screw thread Connect valve end cap (27), be arranged on the nonreturn valve core (24) within check valve body and between nonreturn valve core and valve end cap Spring (26), wherein, check valve body (25) is hollow cylinder, and upside is provided with the air inlet (29) for inputting gas, and lower end opens Mouth end is tightly connected valve end cap (27), and valve end cap is provided with venthole (30);In the inner chamber that check valve body and valve end cap are formed coaxially Leaving and install nonreturn valve core (24) with gap, nonreturn valve core is provided with the different portion that protrudes above (241) of outside diameter and lower protuberance (242), protrude above and between portion (241) and check valve body (25) inwall, install valve seals (31), lower protuberance (242), outward Side pocketed springs (26).Upper and lower protuberance outside diameter is different, is possible to prevent the anti-loaded direction of check valve.
Use technique scheme, of the present utility model have the technical effect that
First and second grade uses motionless sealing means between cylinder body and piston rod, improve the service life of sealing member;
The second, guiding is coordinated between piston with secondary cylinder body, when the low-pressure piston forward compression gas that sectional area is bigger, The high pressure cylinder and the high pressure piston that coordinate assembling become main axle, the guiding mechanism of hole cooperation, strong for low-pressure piston motion opposite direction System guides, and decreases the guiding abrasion of combination sealing;And when the piston compression compressed gas that sectional area is less, completely by piston And high pressure cylinder realizes guide function, reduce the guide function of seal member, substantially increase service life and the minimizing of air pump The abrasion of seal member;And
3rd, the one-level cylinder body of low pressure large volume connects with the secondary cylinder bromhidrosis road of high pressure small size, and gas is entering two Realizing a supercharging during level cylinder body, can realize secondary booster after piston compression pressurization gas, it is continuous that gas can produce two-stage Output pressure gas after supercharging;
4th, this utility model compact conformation, gas piping, valve body etc. are the most built-in to be distributed in pedestal, and electrodynamic pump is overall Miniaturized design, motor, eccentric shaft, connecting rod, piston rod interlock, it is easy to accomplish Automated condtrol.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the embodiment of cylinder body guide miniature booster-type electric air pump of the present utility model;
Fig. 2 is that this utility model electric air pump piston rod moves right working state schematic representation and (is in pressure on the right side of piston rod Contracting state;In the operating position of suction condition on the left of piston rod);
Fig. 3 is that this utility model electric air pump piston rod (is in pressure to left movement working state schematic representation on the left of piston rod Contracting state;In the operating position of suction condition on the right side of piston rod);
Fig. 4 is the cross-sectional view of two kinds of different structures of secondary cylinder body;
Fig. 5 is the cross-sectional view of one-way valve structures in this utility model.
In figure, reference is expressed as:
01: motor, 02: motor cabinet;
03: bearing pin, 04: eccentric shaft, driving handle 041,05: connecting rod;
06: secondary cylinder body, 061: first order through hole, 062: First terrace, 063: second step face, 064: the three step Face, 065: the four step surface, 066: second level through hole;
07: the second combination seal;
08: pump housing seat, 081: one-level cylinder body, 082: secondary cylinder body support seat, 083: protuberance;
09: pin, 10: piston rod, 101: piston one-level end, 102: two grades of ends of piston, 11: the first combination seals, 12: Cylinder body pad;
13: end cap, 14: one-level suction line, 15: one-level breather cheek valve, 16: one-level exhaust check valve, 17: one-level is arranged Air pipe;
18: pressing plate, 19: transition pipe;
20: two grades of suction line, 21: two grades of breather cheek valves, 22: secondary exhaust pipeline, 23: secondary exhaust check valve;
24: nonreturn valve core, 241: protrude above portion, 242: lower protuberance, 25: check valve body, 26: spring, 27: valve end cap, 29: air inlet, 30: venthole, 31: valve seals.
28: sealing ring.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, cylinder body guide miniature supercharging electric air pump of the present utility model is carried out in detail Describe in detail bright.
This utility model cylinder body guide miniature booster-type electric air pump concrete structure sees Fig. 1 to Fig. 3, including motor 01, Eccentric shaft 04, connecting rod 05, secondary cylinder body 06 and one-level cylinder body 081, piston rod 10, pin 09, pressing plate 18, pump housing seat 08, multiple Check valve and sealing ring and multiple pipeline, wherein:
Pump housing seat 08 is the connection member of this electric air pump, and motor 01 is fixed on pump housing seat 08 1 by motor cabinet 02 is vertical Side, eccentric shaft 04 is fixed on motor cabinet 02 bottom by bearing pin 03, and motor shaft extend in the vertical groove of eccentric shaft 04, logical Cross bearing pin 03 to position.
Eccentric shaft 04 lower end is provided with the driving handle 041 downwardly extending disalignment, and driving handle 041 is through horizontally disposed company One installing hole of bar 05 one end, the end of driving handle 041 is stretched out connecting rod 05 and fixes with nut;The pin 09 of vertical setting is worn Cross another installing hole that connecting rod 05 other end is provided with, connecting rod 05 be connected on the piston rod 10 of horizontal direction, connecting rod 05 with Piston rod 10 has distance, pin 09 stretch out the end of connecting rod 05 and stretch out the end of piston rod 10 and fix with nut respectively.
Piston rod 10 includes bar portion and the piston one-level end 101 being arranged on two ends, bar portion and two grades of ends 102 of piston, piston One-level end 101 and two grades of ends 102 of piston are respectively protruding in one-level cylinder body 081 and secondary cylinder body 06.The two ends of pump housing seat 08 are formed It is one-body molded that one-level cylinder body 081 and secondary cylinder body support seat 082, i.e. one-level cylinder body 081 and secondary cylinder body support seat 082.One-level Cylinder body 081 is used for accommodating low-pressure gas, is positioned at the far-end (" left " shown in figure is the far-end that connecting rod 05 moves) of connecting rod 05 motion, Piston one-level end 101 is assemblied in inside one-level cylinder body 081;Secondary cylinder body supports seat 082 and is used for assembling secondary cylinder body 06, secondary cylinder Body 06 is used for accommodating gases at high pressure, and two grades of ends 102 of piston are assemblied in the inner side of secondary cylinder body 06.Two grades of ends of described piston 102 are Cylinder, during piston rod 10 side-to-side movement, two grades of ends 102 of described piston stretch into secondary cylinder body 06 inside and secondary cylinder Body 06 cooperatively forms sealing.And during piston rod 10 side-to-side movement, the bar portion of piston rod 10 does not extends into described two The inside of level cylinder body 06.Piston rod 10 is by being arranged on the first combination seal 11 of piston one-level end 101 at one-level cylinder body 081 Interior formation seals, and the first combination seal 11 is hollow Bowl seal ring liner elastic packing bracing ring;Piston rod 10 is by setting Put the second combination seal 07 between the outer surface of secondary cylinder body 06 and piston rod 10 in secondary cylinder body 06, form sealing, Second combination seal 07 is applied in combination by conventional high abrasion stereosphere and overcoat elastic seal ring.Motor 01 drives eccentric shaft 04 rotates, and being swung by driving handle 041 drivening rod 05, (it is that it is relative to eccentric shaft 04 that connecting rod 05 swings terminal to the left Motion far-end, swinging to the right terminal is its motion near-end relative to eccentric shaft 04), and then drive piston rod 10 by pin 09 One-level cylinder body 081 and secondary cylinder body 06 move back and forth along about axis.The end face face of the piston one-level end 101 of piston rod 10 The long-pending face area more than described two grades of ends 102 of piston, correspondingly the axial cross section area of one-level cylinder body 081 is also greater than two grades The axial cross section area of cylinder body 06, so during piston rod 10 side-to-side movement, the stroke of piston rod 10 is identical, then and one After the gas of level cylinder body 081 controls to enter secondary cylinder body 06 by check valve after being compressed, volume-diminished is compressed the most further, Realize a supercharging of gas.
One-level cylinder body 081 outer end is sequentially provided with cylinder body pad 12, check valve (includes one-level breather cheek valve 15 and one-level aerofluxus Check valve 16) and end cap 13.Two passages, one-level breather cheek valve 15 and one-level exhaust check valve it is provided with on cylinder body pad 12 16 are connected with the inside of one-level cylinder body 06 by above-mentioned two passages.Two pipelines, respectively one-levels it are provided with on end cap 13 Suction line 14 and one-level gas exhaust piping 17.One-level suction line 14 is used for connecting outside air or compressed air line, and with One-level breather cheek valve 15 is connected.One-level gas exhaust piping 17 is connected with one-level exhaust check valve 16, for by one-level cylinder body Gas in 081 is discharged.
Secondary cylinder body 06 outer end connects motor cabinet 02, and motor cabinet 02 is internal offers two phases internal with secondary cylinder body 06 The pipeline (including two grades of suction line 20 and secondary exhaust pipeline 22) of connection, is provided with one before two grades of suction line 20 entrances and enters Gas check valve (two grades of breather cheek valves 21) is for one-way air inlet in secondary cylinder body 06.Two grades of row pipeline 22 outlets are provided with another One outgassing nonreturn valve (secondary exhaust check valve 23) is for discharging gas unidirectional in secondary cylinder body 06.One pressing plate 18 lid crimping is closed In end cap 13, pump housing seat 08 and motor cabinet 02 upper end, two grades of breather cheek valves 21 and secondary exhaust check valve 23 are compressed simultaneously; Pressing plate 18 offers built-in transition pipe 19, and transition pipe 19 one end is connected with one-level gas exhaust piping 17, and the other end connects Two grades of breather cheek valves 21.For making compact conformation, pressing plate 18, pump housing seat 08 and motor cabinet 02 can design with split but be connected as a single entity Form a pedestal, transition pipe 19 and other associated components such as eccentric shaft 04, connecting rod 05, secondary cylinder body 06, one-level cylinder body 081, each check valve and each gas circuit pipeline all can be built in this pedestal, it is achieved integrated design, it is easier to miniaturization, promote this The associative perception of electric air pump and the overall convenience using, changing.
In this utility model, secondary cylinder body 06 not only two grades of ends 102 of piston with piston rod 10 cooperatively form confined air Between to accommodate gases at high pressure, secondary cylinder body 06 and the one-level cylinder body 081 concentricity axle of para-position are arranged can also leading as piston rod 10 To device.Secondary cylinder body 06 is positioned at the end of two grades of sides of piston rod 10 as guider, is formed anti-ballistic to form, i.e. one-level During cylinder body 081 (low pressure (LP) cylinder) mesolow piston (piston one-level end 101) (in Fig. 1, a left side is front) compressed gas forward, coordinate assembling Secondary cylinder body 06 (high pressure cylinder) and high pressure piston (two grades of ends 102 of piston) become main axle, hole coordinate guiding mechanism, structure Upper for low-pressure piston motion opposite direction forced guiding.Structural reference Fig. 4 of secondary cylinder body 06, the figure (a) in Fig. 4 and figure (b) point Wei two kinds of different structure forms of secondary cylinder body 06.
As shown in the figure (a) in Fig. 4, secondary cylinder body 06 is hollow cylinder, and interior bone is provided with two-stage, respectively the first order Through hole 061 and second level through hole 066, two-stage through hole communicates with each other and the diameter of first order through hole 061 is more than second level through hole 066 Diameter, first order through hole 061 has First terrace 062, First terrace 062 be perpendicular to secondary cylinder body 06 axially and connect Connect first order through hole 061 and the inner surface of second level through hole 066.The internal diameter of second level through hole 066 and the piston two of piston rod 10 Level end 102 external diameter coupling forms matched in clearance, and the internal diameter of first order through hole 061 is more than two grades of ends 102 of piston of piston rod 10 External diameter, thus, two grades of end 102 appearances of the piston of the inner surface of first order through hole 061, First terrace 062 and piston rod 10 Face is collectively forming an annular groove, places the second combination seal 07 so that secondary cylinder body 06 and piston rod in this annular groove Formed between two grades of ends 102 of the piston of 10 and seal, prevent the gas within secondary cylinder body 06 from leaking at First terrace 062; Pump housing seat 08 is provided with a pair protuberance 083 that can close this annular groove opening the most corresponding and uses with secondary cylinder body 06 junction In keeping out the second combination seal 07.The outer surface of secondary cylinder body 06 is provided with an outer step, and this outer step is arranged on secondary cylinder Body 06 is adjacent to one end of motor cabinet 02, and this outer step makes the outer surface of secondary cylinder body 06 form two parts that external diameter varies in size. The outer steps face of outer step i.e. second step face 063 is perpendicular to the axial of secondary cylinder body 06.Second step face 063 connects two grades The two-part outer surface that the external diameter of cylinder body 06 is different, the outer surface that external diameter at secondary cylinder body 06 is less is provided with a sealing Circle 28, sealing ring 28 abuts second step face 063, and motor cabinet 02 is arranged on the outside of sealing ring 28, and motor cabinet 02 is by sealing ring 28 compress and then seal secondary cylinder body 06 abuts the side of motor cabinet 02 so that the gases at high pressure within secondary cylinder body 06 can only lead to Cross secondary exhaust check valve 23 to discharge.
With reference to the figure (b) in Fig. 4, for another version of secondary cylinder body 06, its structure phase with the figure (a) in Fig. 4 Seemingly, its difference is the difference of outer step structure of secondary cylinder body 06.In order to adjust sealing ring crush, secondary cylinder body 06 Outer step be provided with there is two-stage, it forms two between outer land terraces, and it is respectively the 3rd step surface 064 and the 4th step surface 065, 3rd step surface 064 apart from the central shaft distance of secondary cylinder body 06 less than the 4th step surface 065 apart from the center of secondary cylinder body 06 The distance of axle.Sealing ring 28 is provided only on the 3rd step surface 064, and the 3rd step surface 064 and the 4th step surface 065 are all and motor Seat 02 compression fit, motor cabinet 02 compresses the 4th step surface 065 and is prevented from secondary cylinder body 06 and produces because piston rod 10 moves Play (because elastic seal ring compress after there is likely to be stress continue deformation possibility);By adjusting secondary cylinder body 06 3rd step surface 064 and motor cabinet 02 against the spacing between the face of elastic sealing ring 28, can adjust sealing in the axial direction The decrement of circle 28.Motor cabinet 02 has a structure matching with above-mentioned two between outer land terrace/coincideing, on the one hand for fixing and Compress sealing ring 28, on the other hand motor cabinet 02 by the seal face that mate with the 4th between outer land terrace 065 also from axial by two Level cylinder body 06 is pressed on pump housing seat 08.
In this utility model, one-level breather cheek valve 15,16, two grades of breather cheek valves of one-level exhaust check valve 21, two grades Exhaust check valve 23 all can use the check valve of identical function existing structure.More excellent, it is possible to use the check valve shown in Fig. 5 Structure.As it is shown in figure 5, this check valve includes valve end cap 27 that check valve body 25 threadeds with check valve body 25, is arranged on list To the nonreturn valve core 24 within valve body 25 and the spring between nonreturn valve core 24 and valve end cap 27 26, wherein, check valve body 25 is hollow cylinder, and upside is provided with the air inlet 29 for inputting gas, and lower end opening end connects valve end cap 27, and seam is close Envelope, valve end cap 27 is provided with venthole 30;The inner chamber that check valve body 25 and valve end cap 27 are formed coaxially leaves list is installed with gap To spool 24, nonreturn valve core 24 is provided with the portion of protruding above 241 and lower protuberance 242, protrude above portion 241 and check valve body 25 inwall it Between install valve seals 31, lower protuberance 242 outer sheath shock mount 26;The cylindrical protruding above portion 241 and lower protuberance 242 is straight Footpath is different, is possible to prevent the anti-loaded direction of check valve.
The operation principle of check valve is: when gas enters via the air inlet 29 away from spring 26 side of check valve body 25 Time, gas applies a pressure and to nonreturn valve core 24 and promotes nonreturn valve core 24 to move to the direction of valve end cap 27, spring 26 quilt Compression increases the gap between nonreturn valve core 24 and check valve body 25 simultaneously, and valve seals 31 cannot effectively seal, gas Enter check valve body 25, and via the space between check valve body 25 and nonreturn valve core 24 from venthole 30 row of valve end cap 27 Go out.When not having gas to be not enough to compression spring 26 from the power that the gas that air inlet 29 enters or enters applies, compressed Spring 26 rebounds, and upwards applies a bounce and makes nonreturn valve core 24 move to air inlet 29 direction on check valve body 25 top, contracting Little gap between nonreturn valve core 24 and check valve body 25, nonreturn valve core 24 is oppressed valve seals 31 and is implemented to seal, when instead To when venthole 30 enters gas, sealing ring 31 is further compressed holding lasting seals, makes the gas cannot be from air inlet 29 Back through, thus realize one-way air inlet.
The beneficial effect of check valve: the first, compact conformation, it is possible to achieve volume miniaturization, saves space;The second, permissible It is manufactured separately, on the element that then plug-in mounting extremely needs, conveniently uses and replace;And the 3rd, change installation direction can realize Contrary opening direction, convenient use.
This utility model cylinder body guide miniature supercharging electric air pump is obtained by the assembling of above each parts.Its operation principle As follows:
In fig. 2, motor 10 drives eccentric shaft 04 to rotate, and drivening rod 05 and piston rod 10 move to the right and finally reach To the rightmost side.Now in the side of one-level cylinder body 081 (pump housing low-pressure section, low pressure (LP) cylinder), one-level breather cheek valve 15 is opened, and one Level exhaust check valve 16 is closed, and extraneous air enters via one-level suction line 14, and the space within one-level cylinder body 081 gradually increases Adduction reaches maximum;Meanwhile, in the side of secondary cylinder body 06 (high pressure cylinder), two grades of breather cheek valves 21 are closed, before from one The gas of level cylinder body 081 is compressed in secondary cylinder body 06 further, thus its pressure increases, it is achieved the two-stage supercharging mistake of gas Journey, now, the gas after discharging two-stage supercharging opened by secondary exhaust check valve 23.
In figure 3, motor 10 drives eccentric shaft 04 to rotate, and drivening rod 05 and piston rod 10 move to the left and finally reach To the leftmost side.Now in the side of one-level cylinder body 081, one-level breather cheek valve 15 is closed, and one-level exhaust check valve 16 is opened, and one Gas in level cylinder body 081 is via one-level gas exhaust piping 17,19 2 grades of breather cheek valves of transition pipe 21 and two grades of suction nozzles Road 20 enters secondary cylinder body 06;Now, secondary cylinder body 06 receives from the gas in one-level cylinder body 081, due to piston one-level end The area of 101 is more than the area of two grades of ends 102 of piston, and after the gas of one-level cylinder body 081 enters secondary cylinder body 06, volume is pressed Contracting, thus its pressure increases, it is achieved the one-level pressurization of gas.In the process, if the gas pressure in secondary cylinder body 06 During less than the pressure of the outlet side of secondary exhaust check valve 23, secondary exhaust check valve 23 still remains turned-off;If secondary cylinder body 06 When interior gas pressure is more than the pressure of the outlet side of secondary exhaust check valve 23, secondary exhaust check valve 23 is opened, secondary cylinder One-level pressurization gas in body 06 is expelled directly out by secondary exhaust pipeline 22.
Thus, extraneous gas is inhaled into one-level cylinder body 081 (such as Fig. 2), after being compressed (such as Fig. 3) in one-level cylinder body 081 Enter secondary cylinder body 06, the one-level supercharging that diminishes through volume in secondary cylinder body 06 and again compressed two grades of (such as Fig. 2) Supercharging, discharges via secondary exhaust pipeline 22.This utility model cylinder body guide miniature electric air pump so circulates work, it is achieved that The function of pressurization gas is persistently provided.
Of the present utility model anti-ballistic to having the beneficial effect that Miniature electric air pump realizes
(1) in secondary cylinder body 06 part, combination seal 07 is arranged on inner surface and the piston rod 10 of secondary cylinder body 06 The annular groove that limits of outer surface in, thus the dynamic seal (packing) between existing piston rod 10 and secondary cylinder body 06 is modified to Static sealing so that the life-span of combination seal 07 improves;
(2) secondary cylinder body 06 is positioned at two grades of ends 102 of piston of piston rod 10, and structure becomes axle, the Guiding machine of hole cooperation Being configured to carry the air pump of guide function, secondary cylinder body 06 coordinates distance longer with piston rod 10 so that piston rod 10 moves Stability improve, change employing sealing member as piston guide major part state, reduce sealing part abrasion;
(3) secondary cylinder body 06 uses wear-resisting, self-lubricating material to make, and decreases between secondary cylinder body 06 and piston rod 10 Frictional force, improves the electric air pump life-span;
(4) can be formed a kind of without glossy with self-lubricating from without lubricating oil between secondary cylinder body 06 and piston rod 10 Sliding supercharging electric air pump, decreases the pollution of electric air pump;And
(5) face area of described piston one-level end 101 is relatively big, piston rod 10 to left movement time, due to one-level cylinder body 081 pressure is less, and connecting rod 05 only needs to apply less power and can realize a large amount of gases in one-level cylinder body 081 to piston rod 10 Being discharged in secondary cylinder body 06, so, motor 01 the most only needs to provide less power to connecting rod, saves energy consumption;And piston two The face area of level end 102 is less, and the gas pressure of output can be the highest, and the power that piston rod 10 needs is less, therefore, is living When stopper rod 10 moves right, it is possible to achieve the gas in secondary cylinder body 06 is carried out supercharging, it is achieved that the two-stage supercharging mistake of gas Journey.
It will be appreciated by those skilled in the art that these embodiments or embodiment are merely to illustrate this utility model and do not limit Making scope of the present utility model, it is open interior that the various equivalent variations being made this utility model and amendment belong to this utility model Hold.

Claims (10)

1. a cylinder body guide miniature booster-type electric air pump, the motor cabinet being connected with pump housing seat including pump housing seat and motor, by Connecting rod, one-level cylinder body, secondary cylinder body that the eccentric shaft of driven by motor and eccentric shaft interlock, it is located in one-level cylinder body and secondary cylinder Piston rod synchronization-moving with connecting rod and be located at multiple check valves of two cylinder body outer ends among body, it is characterised in that:
The two ends of described pump housing seat (08) form one-level cylinder body (081) and secondary cylinder body supports seat (082), and secondary cylinder body (06) fills Be assigned in secondary cylinder body support seat (082) inner side and with one-level cylinder body (081) coaxial line;Secondary cylinder body (06) volume is less than first-stage cylinder The volume of body (081), and two grades of suction line of the one-level gas exhaust piping (17) of one-level cylinder body (081) and secondary cylinder body (06) (20) connection;
Piston rod (10) two ends set piston one-level end (101) and two grades of ends (102) of piston, piston one-level end and one-level cylinder body (081) coordinating, two grades of ends of piston coordinate with secondary cylinder body in stretching into secondary cylinder body (06).
Cylinder body guide miniature booster-type electric air pump the most according to claim 1, it is characterised in that: described secondary cylinder body (06) For hollow cylinder, inner inner surface is provided with and is perpendicular to the First terrace (062) that secondary cylinder body (06) is axial, the second combination sealing Part (07) is assemblied in this First terrace (062) place, and this second combination seal (07) is supported in the side of pump housing seat (08).
Cylinder body guide miniature booster-type electric air pump the most according to claim 2, it is characterised in that: described First terrace (062) inner surface making described secondary cylinder body (06) forms the first order through hole (061) and second level through hole communicated with each other (066), the diameter of first order through hole (061) more than the diameter of second level through hole (066), the inner surface of first order through hole (061), Two grades of end (102) outer surfaces of the piston of First terrace (062) and piston rod (10) are collectively forming an annular groove, this annular Groove is placed the second combination seal (07), pump housing seat (08) be provided with secondary cylinder body (06) junction a pair mutually the most corresponding Protuberance (083) is used for keeping out the second combination seal (07).
Cylinder body guide miniature booster-type electric air pump the most according to claim 3, it is characterised in that: described secondary cylinder body (06) Outer end outer surface at least provided with second step face (063), a sealing ring (28) is connected to this second step face (063), motor This sealing ring (28) is supported in the side of seat (04).
Cylinder body guide miniature booster-type electric air pump the most according to claim 4, it is characterised in that: described secondary cylinder body (06) Outer end outer surface be provided with the 3rd step surface (064) and the 4th step surface (065) two-stage step, the 3rd step surface (064) distance The central shaft distance of secondary cylinder body (06) is less than the distance of the central shaft of the 4th step surface (065) distance secondary cylinder body (06), close Seal (28) is connected to the 3rd step surface (064), and this sealing ring (28) and the 4th step are supported in the side of motor cabinet (04) Face (065).
6. according to the arbitrary described cylinder body guide miniature booster-type electric air pump of claim 1 to 5, it is characterised in that: piston one-level The face area of end (101) more than the face area of two grades of ends (102) of piston, corresponding one-level cylinder body (081) the most transversal Face area is more than the axial cross section area of secondary cylinder body (06).
Cylinder body guide miniature booster-type electric air pump the most according to claim 6, it is characterised in that: one-level cylinder body (081) is outward End is sequentially provided with cylinder body pad (12), the one-level breather cheek valve (15) of reverse-fitting and one-level exhaust check valve (16) and end cap (13), one-level breather cheek valve (15) and one-level exhaust check valve (16) and one-level cylinder body (081) inner space, on end cap (13) One-level suction line (14) connect ambient atmos being connected with one-level breather cheek valve (15), the one-level row on end cap (13) Air pipe (17) is connected with one-level exhaust check valve (16), and passes through two grades of a transition pipe (19) and secondary cylinder body (06) Suction line (20) connects.
Cylinder body guide miniature booster-type electric air pump the most according to claim 7, it is characterised in that: secondary cylinder body (06) outer end It is arranged with two grades of suction line (20) and secondary exhaust pipeline (22), is provided with for controlling before two grades of suction line (20) entrances Two grades of breather cheek valves (21) of air inlet, the one-level gas exhaust piping (17) of one-level cylinder body (081) by a transition pipe (19) and These two grades of breather cheek valves (21) connect with two grades of suction line (20);Secondary exhaust pipeline (22) outlet installation is used for controlling The secondary exhaust check valve (23) of gas.
Cylinder body guide miniature booster-type electric air pump the most according to claim 8, it is characterised in that: also set a pressing plate (18), Lid crimping is together in end cap (13), pump housing seat (08) and motor cabinet (02) upper end of one-level cylinder body (081) and by secondary cylinder body (06) Two grades of breather cheek valves (21) and secondary exhaust check valve (23) compress;Described transition pipe (19) is built in pressing plate (18) In.
Cylinder body guide miniature booster-type electric air pump the most according to claim 9, it is characterised in that: one-level breather cheek valve (15), one-level exhaust check valve (16), two grades of breather cheek valves (21) and secondary exhaust check valve (23) are identical structure, institute State valve end cap (27) that check valve includes that check valve body (25) threadeds with check valve body, be arranged within check valve body Nonreturn valve core (24) and the spring (26) between nonreturn valve core and valve end cap, wherein, check valve body (25) is hollow cylinder, Upside is provided with the air inlet (29) for inputting gas, and lower end opening end is tightly connected valve end cap (27), and valve end cap is provided with gives vent to anger Hole (30);Coaxially leaving in the inner chamber that check valve body and valve end cap are formed and install nonreturn valve core (24) with gap, nonreturn valve core sets There are the different portion that protrudes above (241) of outside diameter and lower protuberance (242), protrude above portion (241) and check valve body (25) inwall Between install valve seals (31), lower protuberance (242), outer sheath shock mount (26).
CN201620778062.XU 2016-07-22 2016-07-22 Electronic air pump of cylinder body miniature booster -type of direction CN205876644U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107100818A (en) * 2017-04-11 2017-08-29 上乘精密科技(苏州)有限公司 A kind of crank two-stage compression piston component
CN107269485A (en) * 2017-07-25 2017-10-20 北京斯贝克科技有限责任公司 A kind of high-pressure mini electric gas compressor
CN107642478A (en) * 2016-07-22 2018-01-30 北京康斯特仪表科技股份有限公司 A kind of cylinder body guide miniature booster-type electric air pump
US10976211B2 (en) 2016-07-22 2021-04-13 Beijing Const Instruments Technology Inc. Fully-automated handheld pressure calibrator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107642478A (en) * 2016-07-22 2018-01-30 北京康斯特仪表科技股份有限公司 A kind of cylinder body guide miniature booster-type electric air pump
US10976211B2 (en) 2016-07-22 2021-04-13 Beijing Const Instruments Technology Inc. Fully-automated handheld pressure calibrator
CN107100818A (en) * 2017-04-11 2017-08-29 上乘精密科技(苏州)有限公司 A kind of crank two-stage compression piston component
CN107269485A (en) * 2017-07-25 2017-10-20 北京斯贝克科技有限责任公司 A kind of high-pressure mini electric gas compressor

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