CN202091139U - High-pressure bidirectional miniature electric air pump - Google Patents
High-pressure bidirectional miniature electric air pump Download PDFInfo
- Publication number
- CN202091139U CN202091139U CN2011201717653U CN201120171765U CN202091139U CN 202091139 U CN202091139 U CN 202091139U CN 2011201717653 U CN2011201717653 U CN 2011201717653U CN 201120171765 U CN201120171765 U CN 201120171765U CN 202091139 U CN202091139 U CN 202091139U
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- cylinder
- miniature electric
- air pump
- piston rod
- check valve
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Abstract
The utility model relates to a high-pressure bidirectional miniature electric air pump, which comprises a motor, an eccentric shaft, a swing rod, a pump body, a left cylinder, a right cylinder, a piston rod, a unidirectional valve and cylinder covers. The unidirectional valve and the cylinder covers are connected with the two cylinders, the motor is fixed on the pump body, a motor shaft is connected with the eccentric shaft, a driving pin at one end of the eccentric shaft penetrates through a mounting hole of the swing rod, the swing rod is connected onto the piston rod arranged horizontally via a screw, two ends of the piston rod are provided with sealing rings and respectively extend into the left cylinder and the right cylinder, and the two cylinders are respectively mounted at two ends of the pump body. The electric air pump has the advantages of small volume, light weight, low power consumption, capability of generating high pressure, wide pressure range, fine pressure starting performance and the like, and can meet requirements of low flow and high pressure of the industry.
Description
Technical field
The utility model belongs to pressure instrument standard technique field, is specifically related to a kind ofly can produce gas pressure, is used for the electric air pump of the standard of pressure instrument.
Background technique
In the verification process of gas pressure instrument, the pressurized air that need have certain pressure is examined and determine instrument as medium.The pressurized air source of traditional approach mainly contains dual mode: hand air pump and gas cylinder.Hand air pump is mainly used in the Manual pressure instrument calibration device, in order to finish normal verification process, operator need constantly the operation hand air pump to guarantee that verification process has enough pressurized air, this is a heavy muscle power job, had a strong impact on the efficient of calibration operation, raising along with industrial automatization, gas pressure instrument automatic calibrator has appearred, use gas cylinder to provide pressurized air as calibrating installation, the gas cylinder finite capacity, bulky, be difficult for carrying, brought many constant to calibration operation, more can't satisfy the needs of industry spot automatic Verification pressure instrument, in order to address this problem, people's imagination replaces gas cylinder with electric air pump, but existing electric air pump exists volume big, weight is big, power consumption is big, the generation gas pressure is low, band is pressed shortcomings such as startability difference, can not satisfy industry small flow, the needs of high pressure, everything is seriously restricting gas pressure instrument automatic calibrator to automation, miniaturization, the direction of Highgrade integration development.
The model utility content
It is a kind of simple in structure that the utility model purpose is to provide, volume is little, is convenient to install, and easily is automated, miniaturization, be convenient in automatic calibrator highly integratedly, be convenient for carrying to the high-voltage bidirectional miniature electric air pump of the pressure instrument automatic calibration device at scene with formation.
A kind of high-voltage bidirectional miniature electric of the utility model air pump, comprise motor, eccentric shaft, fork, the pump housing, about two cylinder bodies, piston rod and the check valve body and the cylinder cap that are connected with two cylinder bodies, wherein: the pump housing is a connected element, motor is fixed on the pump housing, and motor shaft stretches into the pump housing and is connected with eccentric shaft; Eccentric shaft is cylindric, and an end has the drive pin that deviates from the axle center, passes a mounting hole of flat fork by drive pin; Fork is connected on the horizontally disposed piston rod by screw; Piston rod is cylindric, its two ends be equipped with seal ring and stretch into respectively about two cylinder bodies; Cylinder body is a cylinder-like structure, and two cylinder bodies are installed in the two ends of the pump housing respectively; Two cylinder body outer ends are installed check valve body and cylinder cap more successively, and check valve body is communicated with inner chamber of cylinder block, and are communicated with ambient air or compressed air line by the passage of cylinder cap.
In the above-mentioned high-voltage bidirectional miniature electric air pump, piston rod forms sealing by the seal ring that is installed in two ends at inboard wall of cylinder block; Fork swing drive piston rod in two cylinder bodies along the axis to-and-fro motion.
Screw adjusted is passed through in the gap of described fork and piston rod.
Two reverse check valve body are all installed at two ends, the cylinder body left and right sides, and one of them check valve body is communicated with ambient air, and another check valve body is communicated with compressed air line.
Described check valve body is assembled by cavity sealing, elasticity arm, metal gasket and seal ring, and wherein, elasticity arm is extended internally by the cavity sealing, and is connected the bottom fixed seal ring of metal gasket with the upper end of metal gasket.Described cavity is sealed into loop configuration, makes with elastic material.Described elasticity arm and cavity sealing are connected as a single entity, and for the list structure that extends internally, make with elastic material.Described metal gasket is discoid, and annular slot is established on top, and the elasticity arm termination is stuck in this draw-in groove.An annular groove is established in the bottom of described metal gasket, and seal ring is fixed in this groove.
Adopt above design, electric air pump of the present utility model is simplified traditional kind of drive on the structure, by placing piston relatively with one heart, from the aligning kind of drive driving mechanism of piston is oversimplified, and reaches miniaturization; Drive eccentric shaft by the motor rotation, thereby realize driving piston.The utility model electric air pump has characteristics such as volume is little, in light weight, power consumption is little, can produce high pressure, and pressure range is wide, and band pressure startability is good, can satisfy the needs of industry small flow, high pressure.
Description of drawings
Fig. 1 is the utility model electric air pump main structure figure (omission motor);
(left hand piston is in compressive state for the utility model electric air pump piston rod is moved to the left working state schematic representation for Fig. 2; Right hand piston is in the maximal work position of suction condition);
(right hand piston is in compressive state for working state schematic representation for the electric air pump piston rod moves right for Fig. 3; Left hand piston is in the maximal work position of suction condition);
Fig. 4 is a check valve body structural representation in the utility model.
Embodiment
The utility model high-voltage bidirectional miniature electric air pump concrete structure is referring to Fig. 1-shown in Figure 3, and wherein Fig. 1 has shown critical piece; Fig. 2 shows left hand piston in compressive state, and right hand piston is in the maximal work position of suction condition; Fig. 3 shows right hand piston in compressive state, and left hand piston is in the maximal work position of suction condition.
Referring to Fig. 1-Fig. 3, high-voltage bidirectional miniature electric air pump described in the utility model comprises motor 1, eccentric shaft 2, fork 3, the pump housing 4, left cylinder 5 and right cylinder body 5 ', check valve body 6, cylinder cap 7, cylinder pad 8, seal ring 9, piston rod 10 and screw 11, electric machine support 12, coupling 13.Wherein:
The pump housing 4 is the connected element of this electric air pump, and motor 1 is fixed on the pump housing 4 by electric machine support 12, and motor shaft stretches under the pump housing 4 by coupling 13 and links together with eccentric shaft 2.
Piston rod 10 two ends are stretched into left cylinder 5 and right cylinder body 5 ' respectively; Cylinder body is a cylinder-like structure, and two cylinder bodies 5 and 5 ' are installed in the two ends of the pump housing 4 respectively; Piston rod 10 forms sealing by the seal ring 9 that is installed in two ends at cylinder body 5 and 5 ' inwall; The cylinder body 5 at two ends and 5 ' symmetric double drive piston rod 10 along the axis to-and-fro motion during fork 3 swings after assembling, the seal ring 9 at two ends becomes piston rod 10 guide collar simultaneously, has realized on the structure having realized air pump transmission and sealing from the mode of aligning guiding; Two cylinder bodies 5 and 5 ' outer end are installed cylinder pad 8, check valve body 6 and cylinder cap 7 more successively, are fixedly mounted on the two ends of the pump housing 4; Two reverse check valve body 6 are installed at its middle pump body 4 two ends respectively, and check valve body 6 is communicated with cylinder body 5 and 5 ' inner chamber, and are communicated with ambient air or compressed air line by the passage of cylinder cap 7, and air inlet and outgassing direction are as Figure 1-3.
The check valve body 6 that is used for the utility model air pump can be used existing one-way valve, and using the patent No. especially is the check valve body structure of 201020598849.0 designs.This check valve body structure is referring to Fig. 4, it comprises cavity sealing 61, elasticity arm 62, metal gasket 63 and seal ring 64, wherein, cavity sealing 61 is a loop configuration, be the outer support and the sealing of total, be installed on the interplanar (between cylinder cap and the cylinder body) of two needs sealings, form seal chamber, also the sealing of structure is as a whole made with elastic material; Elasticity arm 62 utilizes the elasticity of its rubber to stretch for by cavity sealing 61 list structures that extend internally, and elasticity arm 62 bottoms contact with metal gasket 63 tops; Metal gasket 63 is shaped as discoidly, and the extending end that upper, annular draw-in groove 31 is used for inlaying elasticity arm 62 makes it be stuck in this draw-in groove 31 and makes and connects with metal gasket 63 tops below the elasticity arm 62; An annular groove 32 is established in the bottom of metal gasket 63, places seal ring 64 in it; Seal ring 64 is " O " RunddichtringO of standard, is fixed in the lower recess 32 of metal gasket 63.In the installation, the inlet, outlet direction of the airintake direction of check valve body 6, outgassing direction and the pump housing is consistent, form unidirectional air inlet: when pressurized gas are discharged (exhaust), Figure 2 shows that example, cylinder body 5 pistons 10 make the gas in the jar compression to left movement, be loaded on one-way valve 6 work of below, the metal gasket 63 that promotion studs with " O " RunddichtringO 64 1 sides moves (moving by Fig. 4 outgassing direction), seal ring also moves thereupon, check valve body 6 is in open mode, and the pressurized gas of compression are pushed in the pressurized gas output pipe by gas channel; In cylinder body 5 inner piston rods 10 return strokes, elasticity arm 62 drives metal gasket 63 reversing motions (pressing the reverse of Fig. 4 position airintake direction), compresses seal 64 makes it to produce plane sealing, and pressurized gas are closed in the needed cavity like this, has finished the requirement of sealing high pressure.When ambient air sucks (air-breathing), Figure 3 shows that example, cylinder body 5 pistons 10 move right and make gas in the jar form negative pressure, be loaded on one-way valve 6 work of top, the metal gasket 63 that promotion studs with " O " RunddichtringO 64 1 sides moves (moving by Fig. 4 outgassing direction), seal ring also moves thereupon, and check valve body 6 is in open mode, and ambient air is inhaled in the cylinder body 5 by gas channel; Pressurized gas and external environment condition are kept apart in cavity sealing 61 in whole process, elasticity arm 62 support metal pads 63 and the seal ring 64 by being attached thereto simultaneously, formation integral sealing.Because all have two check valve body 6 oppositely to install mutually at the pump housing 4 every ends, a control is air-breathing, another controls exhaust, forms direction motion of gas like this in the to-and-fro motion of piston 10, produces pressurized gas when gas is placed on confined space.
The utility model electric air pump is when work, and motor 1 drives eccentric shaft 2 and rotates, and the drive pin on the eccentric shaft 2 makes that by fork 3 and screw 11 pulling piston rods 10 piston rod 10 can to-and-fro motion.The seal ring 9 that piston rod 10 is installed by two ends forms sealing with cylinder body 5, partly be example with left hand cylinder among Fig. 2, the production process of pressurized gas is described: when piston rod 10 when move in the right, left side cylinder body 5 volume inside increase rapidly, in the cylinder body 5 inner negative pressure that form, make the check valve body 6 of left upper portion be in suction condition (oppositely placing nonreturn valve core opens), air outside is inhaled into cylinder body 5, fork 3 runs to this check valve body 6 of oppositely placing of right side limit position (as Fig. 3) and closes, and finishes breathing process; When piston rod 10 during to left movement, the sealing gas of cylinder body 5 inside, left side is compressed, pressure progressively raises, make the check valve body 6 of bottom, left side be in exhaust condition (forward is placed nonreturn valve core and opened), pressurized air is discharged, move to left side limit position (Fig. 2 left hand piston position), the check valve body 6 that this forward is placed is closed, and finishes exhaust (output high pressure compressed gas) process.Driven by motor eccentric shaft 2 drives piston rod 10 to-and-fro motion by fork 3 again, and breathing process and exhaust process constantly repeat, and gas constantly is compressed, and produces pressurized gas.And symmetric double to place cylinder 5 and 5 ' can in a circulation, finish suck from the external world for twice air with cylinder in pressurized gas discharge, also improved efficient.
The symmetric double that the utility model mainly solves drive part is to from the aligning drive mechanism, make piston rod along the axle center linear reciprocating motion, do not need to increase auxiliary guide mechanism, by the two ends elastic seal ring directly as guide structure, it also is adjusting play voluntarily that fork and piston rod connect, so this structure be one from aligning two-way floating drive mechanism mode, the swing of piston rod axis direction can not appear, farthest bring into play the Piston Compression space, make air pump compress the maximum efficient of performance at every turn, produce very high pressure, also can reach very little vacuum simultaneously, the model utility of this electric air pump has satisfied instrument and apparatus calibrating industry needs high pressure simultaneously, two kinds of requirements of rough vacuum, effectively utilize pressurized air to carry out the green calibration operation of instrument and apparatus, the utility model provides two-way pressurized air simultaneously, has improved working efficiency.
Claims (9)
1. a high-voltage bidirectional miniature electric air pump is characterized in that, comprise motor, eccentric shaft, fork, the pump housing, about two cylinder bodies, piston rod and the check valve body and the cylinder cap that are connected with two cylinder bodies, wherein:
The pump housing is a connected element, and motor is fixed on the pump housing, and motor shaft stretches into the pump housing and is connected with eccentric shaft;
Eccentric shaft is cylindric, and an end has the drive pin that deviates from the axle center, passes a mounting hole of flat fork by drive pin;
Fork is connected on the horizontally disposed piston rod by screw;
Piston rod is cylindric, its two ends be equipped with seal ring and stretch into respectively about two cylinder bodies;
Cylinder body is a cylinder-like structure, and two cylinder bodies are installed in the two ends of the pump housing respectively;
Two cylinder body outer ends are installed check valve body and cylinder cap more successively, and check valve body is communicated with inner chamber of cylinder block, and are communicated with ambient air or compressed air line by the passage of cylinder cap.
2. according to the described high-voltage bidirectional miniature electric of claim 1 air pump, it is characterized in that seal ring is installed at the piston rod two ends.
3. according to claim 1 or 2 described high-voltage bidirectional miniature electric air pumps, it is characterized in that screw adjusted is passed through in the gap of described fork and piston rod.
4. according to claim 1 or 2 described high-voltage bidirectional miniature electric air pumps, it is characterized in that two reverse check valve body are all installed at two ends, the cylinder body left and right sides, one of them check valve body is communicated with ambient air, and another check valve body is communicated with compressed air line.
5. according to the described high-voltage bidirectional miniature electric of claim 4 air pump, it is characterized in that, described check valve body is assembled by cavity sealing, elasticity arm, metal gasket and seal ring, wherein, elasticity arm is extended internally by the cavity sealing, and be connected the bottom fixed seal ring of metal gasket with the upper end of metal gasket.
6. according to the described high-voltage bidirectional miniature electric of claim 4 air pump, it is characterized in that described cavity is sealed into loop configuration, makes with elastic material.
7. according to the described high-voltage bidirectional miniature electric of claim 4 air pump, it is characterized in that described elasticity arm and cavity sealing are connected as a single entity, and for the list structure that extends internally, make with elastic material.
8. according to the described high-voltage bidirectional miniature electric of claim 4 air pump, it is characterized in that described metal gasket is discoid, annular slot is established on top, and the elasticity arm termination is stuck in this draw-in groove.
9. according to the described high-voltage bidirectional miniature electric of claim 4 air pump, it is characterized in that an annular groove is established in the bottom of described metal gasket, seal ring is fixed in this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201717653U CN202091139U (en) | 2011-05-26 | 2011-05-26 | High-pressure bidirectional miniature electric air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201717653U CN202091139U (en) | 2011-05-26 | 2011-05-26 | High-pressure bidirectional miniature electric air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091139U true CN202091139U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201717653U Expired - Lifetime CN202091139U (en) | 2011-05-26 | 2011-05-26 | High-pressure bidirectional miniature electric air pump |
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| Country | Link |
|---|---|
| CN (1) | CN202091139U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182665A (en) * | 2011-05-26 | 2011-09-14 | 北京康斯特仪表科技股份有限公司 | High-pressure bidirectional miniature power-driven air pump |
| CN108457842A (en) * | 2018-05-24 | 2018-08-28 | 吉林化工学院 | Medical compound plunger pump |
| CN109277653A (en) * | 2018-10-10 | 2019-01-29 | 南京工程学院 | One kind being based on the double cylinder vibration assistant electric arc milling spindle of positive/negative-pressure |
| WO2020253070A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Pressure vacuum control pump |
-
2011
- 2011-05-26 CN CN2011201717653U patent/CN202091139U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182665A (en) * | 2011-05-26 | 2011-09-14 | 北京康斯特仪表科技股份有限公司 | High-pressure bidirectional miniature power-driven air pump |
| CN108457842A (en) * | 2018-05-24 | 2018-08-28 | 吉林化工学院 | Medical compound plunger pump |
| CN108457842B (en) * | 2018-05-24 | 2023-06-23 | 吉林化工学院 | Medical composite plunger pump |
| CN109277653A (en) * | 2018-10-10 | 2019-01-29 | 南京工程学院 | One kind being based on the double cylinder vibration assistant electric arc milling spindle of positive/negative-pressure |
| WO2020253070A1 (en) * | 2019-06-18 | 2020-12-24 | 苏州思维医疗科技有限公司 | Pressure vacuum control pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111228 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |