CN210799264U - Reciprocating oilless piston miniature air pump - Google Patents
Reciprocating oilless piston miniature air pump Download PDFInfo
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- CN210799264U CN210799264U CN201921601800.3U CN201921601800U CN210799264U CN 210799264 U CN210799264 U CN 210799264U CN 201921601800 U CN201921601800 U CN 201921601800U CN 210799264 U CN210799264 U CN 210799264U
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Abstract
The utility model relates to a reciprocating type does not have miniature air pump of oil piston, the mounting panel comprises a mounting plate, be provided with the motor on the mounting panel, be provided with drive mechanism below the mounting panel, the output shaft of drive mechanism one end and motor, the drive mechanism other end is provided with the eccentric shaft, be provided with first bearing on the eccentric shaft, be equipped with reciprocal connecting rod in flange bearing periphery cover, be provided with first piston in reciprocal connecting rod one end, the reciprocal connecting rod other end is provided with the second piston, first piston periphery cover is equipped with first sealed cylinder liner, second piston periphery cover is equipped with the sealed cylinder liner of second, there is one-way air inlet unit at first sealed cylinder liner end seal connection, there is one-way air outlet means at the sealed cylinder liner end seal of second, be provided with the connecting pipe between one-. The utility model discloses rational in infrastructure, easy and simple to handle, sealing performance is good, and gaseous transmission efficiency is high simultaneously, the low power dissipation.
Description
Technical Field
The utility model relates to a reciprocating type does not have miniature air pump of oil piston.
Background
"SF 6 gas density relay" is used to monitor and control the density of shielding gas SF6 within a high voltage electrical power apparatus. The high-voltage transformer is widely applied to high-voltage circuit breakers, medium-voltage switches, gas insulated equipment (GIS), high-voltage cables, transformers and transformers, and can adapt to outdoor severe environment spare parts. An alarm signal, a locking signal or an overpressure signal is sent out in time aiming at the leakage condition of SF6 gas in electrical equipment, so that the safe operation of the electrical equipment is ensured, and therefore, the pressure verification of an SF6 gas density relay is required. The pressure medium of the calibration equipment does not contain moisture, oil or other gas components, and the calibration equipment which is used for pressure calibration of the SF6 gas density relay is pure SF6 gas. Ordinary SF6 density relay check gauge equipment adopts external steel bottle to provide SF6 pressure air supply, but it is inconvenient to carry external steel bottle during actual use, and the use is complicated, and SF6 gas directly discharges to the atmosphere, causes unrecoverable environmental pollution. Therefore, the SF6 density relay calibrator should have the capability of cyclically utilizing SF6 gas to perform pressure calibration on the SF6 gas density relay, and usually, the SF6 density relay calibrator adopts a piston air pump to drive SF6 gas to perform cyclic pressure calibration, and the requirement on the piston air pump must meet the requirements of no leakage and no oil.
The existing oil-free piston air pump needs a motor with larger power, so that the oil-free piston air pump is large in size, large in power and heavy in weight, cannot meet the portable requirement, is difficult to simultaneously meet the functions of inflating high pressure and vacuumizing, and is low in air conveying efficiency.
Disclosure of Invention
In view of this, the utility model aims at providing a reciprocating type does not have miniature air pump of oil piston, rational in infrastructure, easy and simple to handle, sealing performance is good, and gaseous transmission efficiency is high simultaneously, the low power dissipation.
The technical scheme of the utility model is that: a reciprocating oilless piston micro air pump comprises a mounting plate, a motor is arranged on the mounting plate, a transmission mechanism is arranged below the mounting plate, one end of the transmission mechanism is connected with an output shaft of the motor, an eccentric shaft is arranged at the other end of the transmission mechanism, a first bearing is arranged at the upper end of the eccentric shaft, a reciprocating connecting rod is sleeved on the periphery of the flange bearing, a first piston is arranged at one end of the reciprocating connecting rod, a second piston is arranged at the other end of the reciprocating connecting rod, a first sealing cylinder sleeve is sleeved on the periphery of the first piston, a second sealing cylinder sleeve is sleeved on the periphery of the second piston, the diameter of the first piston is larger than that of the second piston, the diameter of the first sealing cylinder sleeve is larger than that of the second sealing cylinder sleeve, the end part of the first sealing cylinder sleeve is connected with a one-way air inlet device in a sealing way, the end part of the second sealing cylinder sleeve is connected with a one-way air outlet device in a sealing way, and a connecting pipe is arranged between the one-way air inlet device and the one-way air outlet device.
Furthermore, the one-way air inlet device comprises a first shell, a first air inlet connector and a first air outlet connector are arranged at the upper end of the first shell, a first air channel used for communicating the first air inlet connector with the inner cavity of the first sealing cylinder sleeve is arranged in the first shell, a second air channel used for communicating the first air outlet connector with the inner cavity of the first sealing cylinder sleeve is further arranged in the first shell, a first one-way valve only allowing air to flow from the first air inlet connector to the inner cavity of the first sealing cylinder sleeve is arranged on the first air channel, and a second one-way valve only allowing air to flow from the inner cavity of the first sealing cylinder sleeve to the first air outlet connector is arranged on the second air channel.
Furthermore, the one-way air outlet device comprises a second shell, a second air inlet connector and a second air outlet connector are arranged at the upper end of the second shell, a third air channel used for communicating the second air inlet connector with an inner cavity of the second sealing cylinder sleeve is arranged in the second shell, a fourth air channel used for communicating the second air outlet connector with the inner cavity of the second sealing cylinder sleeve is further arranged in the second shell, a third one-way valve only allowing air to flow from the second air inlet connector to the inner cavity of the second sealing cylinder sleeve is arranged on the third air channel, and a fourth one-way valve only allowing air to flow from the inner cavity of the second sealing cylinder sleeve to the second air outlet connector is arranged on the fourth air channel.
Furthermore, one end of the connecting pipe is connected with the first air outlet joint, and the other end of the connecting pipe is connected with the second air inlet joint.
Furthermore, drive mechanism is synchronous belt drive mechanism, and synchronous belt drive mechanism includes first synchronous pulley, second synchronous pulley and driving belt, and first synchronous pulley's diameter is less than the diameter of second synchronous pulley, and first synchronous pulley is fixed in on the output shaft of motor.
Further, the first bearing is a flange bearing.
Furthermore, the periphery of the first sealing cylinder sleeve and the second sealing cylinder sleeve is sleeved with a fixing seat used for respectively fixedly pressing the first sealing cylinder sleeve and the second sealing cylinder sleeve on the one-way air inlet device and the one-way air outlet device.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses rational in infrastructure, easy and simple to handle, sealing performance is good, and gaseous transmission efficiency is high simultaneously, the low power dissipation.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a schematic structural view of an eccentric shaft according to an embodiment of the present invention;
FIG. 4 is a front view of the unidirectional air inlet device according to the embodiment of the present invention;
FIG. 5 is a left side view of the unidirectional air inlet device according to the embodiment of the present invention;
FIG. 6 is a front view of the one-way air outlet device according to the embodiment of the present invention;
fig. 7 is a left side view of the unidirectional air outlet device according to the embodiment of the present invention;
fig. 8 is a schematic view illustrating the installation of the first piston and the second piston according to the embodiment of the present invention;
in the figure: 100-a mounting plate; 110-a motor; 120-a transmission mechanism; 130-an eccentric shaft; 131-a first bearing; 200-a reciprocating connecting rod; 210-a first piston; 220-a second piston; 300-a first sealing cylinder liner; 400-a second sealing cylinder liner; 500-one-way air intake device; 510-a first housing; 520-a first air intake joint; 530-a first outlet connector; 540-first gas channel; 541-a first one-way valve; 550-a second gas channel; 551-a second one-way valve; 600-one-way air outlet device; 610-a second housing; 620-second air intake joint; 630-a second outlet connector; 640-a third gas channel; 641-a third one-way valve; 650-a fourth gas channel; 651-fourth one-way valve; 700-connecting pipe; 800-fixed seat.
Detailed Description
As shown in fig. 1 to 8, a reciprocating oil-free piston micro air pump includes a mounting plate 100, a motor 110 is disposed on the mounting plate 100, a transmission mechanism 120 is disposed below the mounting plate 100, one end of the transmission mechanism 120 is connected to an output shaft of the motor 110, the other end of the transmission mechanism 120 is provided with an eccentric shaft 130, the upper end of the eccentric shaft 130 is provided with a first bearing 131, a reciprocating connecting rod 200 is sleeved on the periphery of the flange bearing, one end of the reciprocating connecting rod 200 is provided with a first piston 210, the other end of the reciprocating connecting rod 200 is provided with a second piston 220, the periphery of the first piston 210 is sleeved with a first sealing cylinder sleeve 300, the periphery of the second piston 220 is sleeved with a second sealing cylinder sleeve 400, the diameter of the first piston 210 is larger than that of the second piston 220, the diameter of the first sealing cylinder sleeve 300 is larger than that of the second sealing cylinder sleeve 400, an, the end of the second sealing cylinder sleeve 400 is connected with a one-way air outlet device 600 in a sealing manner, and a connecting pipe 700 is arranged between the one-way air inlet device 500 and the one-way air outlet device 600. The motor 110 is fixedly installed on the installation plate 100, an output shaft of the motor 110 penetrates through the installation plate 100 and extends downwards, the eccentric shaft 130 penetrates through the installation plate 100, the lower end of the eccentric shaft 130 is connected with the output shaft of the motor 110 through the transmission mechanism 120, the fixing seat 800 is fixed on the upper end surface of the installation plate 100, the first sealing cylinder sleeve 300, the second sealing cylinder sleeve 400, the one-way air outlet device 600 and the one-way air inlet device 500 are all fixed on the fixing seat 800, the first piston 210 extends into the first sealing cylinder sleeve 300, the second piston 220 extends into the second sealing cylinder sleeve 400, the first piston 210 and the second piston 220 are respectively and fixedly installed on two sides of the reciprocating connecting rod 200, the first bearing 131 is fixedly sleeved at the upper end of the eccentric shaft 130, the reciprocating connecting rod 200 is sleeved on the periphery of the first bearing 131, and the reciprocating; the diameter of the first piston 210 is set to be larger than that of the second piston 220, so that the diameter of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, and further the volume of the inner cavity of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, when the first piston 210 and the second piston 220 move leftwards simultaneously, because the displacements of the first piston 210 and the second piston 220 are consistent, but because the diameter of the inner cavity of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, when the first piston 210 and the second piston 220 move to the leftmost end, all the gas in the first seal cylinder sleeve 300 is compressed into the second seal cylinder sleeve 400, because the volume of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, all the gas can be in a compressed state after entering the second seal cylinder sleeve 400, and the compressed gas can generate a certain thrust force on the fourth one-way valve 651, the fourth check valve 651 tends to be opened, so that the resistance of the second piston 220 to move rightwards is reduced, and the resistance of the motor 110 is reduced.
In this embodiment, the unidirectional air intake device 500 includes a first housing 510, a first air intake joint 520 and a first air outlet joint 530 are disposed at an upper end of the first housing 510, a first air passage 540 for communicating the first air intake joint 520 and an inner cavity of the first seal cylinder 300 is disposed in the first housing 510, a second air passage 550 for communicating the first air outlet joint 530 and an inner cavity of the first seal cylinder 300 is further disposed in the first housing 510, a first unidirectional valve 541 for allowing air to flow from the first air intake joint 520 to the inner cavity of the first seal cylinder 300 only is disposed in the first air passage 540, and a second unidirectional valve for allowing air to flow from the inner cavity of the first seal cylinder 300 to the first air outlet joint 530 only is disposed in the second air passage 550. The gas in the unidirectional gas inlet device 500 flows only through the first gas inlet joint 520, then enters the inner cavity of the first sealing cylinder sleeve 300 through the first gas channel 540, and then is discharged through the second gas channel 550 and the first gas outlet joint 530.
In this embodiment, the one-way gas outlet device 600 includes a second housing 610, a second gas inlet joint 620 and a second gas outlet joint 630 are disposed at an upper end of the second housing 610, a third gas channel 640 for communicating the second gas inlet joint 620 with an inner cavity of the second seal cylinder sleeve 400 is disposed in the second housing 610, a fourth gas channel 650 for communicating the second gas outlet joint 630 with an inner cavity of the second seal cylinder sleeve 400 is further disposed in the second housing 610, a third one-way valve 641 for allowing gas to flow from the second gas inlet joint 620 to the inner cavity of the second seal cylinder sleeve 400 only is disposed on the third gas channel 640, and a fourth one-way valve 651 for allowing gas to flow from the inner cavity of the second seal cylinder sleeve 400 to the second gas outlet joint 630 only is disposed on the fourth gas channel 650. The gas in the one-way gas outlet device 600 can only be introduced through the second gas inlet joint 620, then enters the inner cavity of the second sealing cylinder sleeve 400 through the third gas channel 640, and then is discharged through the fourth gas channel 650 and the second gas outlet joint 630.
In this embodiment, one end of the connection tube 700 is connected to the first air outlet connector 530, and the other end of the connection tube 700 is connected to the second air inlet connector 620.
In this embodiment, the transmission mechanism 120 is a synchronous belt transmission mechanism 120, the synchronous belt transmission mechanism includes a first synchronous pulley, a second synchronous pulley and a transmission belt, a diameter of the first synchronous pulley is smaller than a diameter of the second synchronous pulley, and the first synchronous pulley is fixed on an output shaft of the motor. The transmission mechanism transmits the power of the motor to the eccentric wheel, and the diameter of the first synchronous belt wheel is smaller than that of the second synchronous belt wheel, so that when the transmission mechanism transmits the power to the eccentric shaft, the torque can be increased, and the output power of the motor can be reduced.
In this embodiment, the first bearing 131 is a flange bearing.
In this embodiment, the mounting plate 100 is further provided with a fixing seat 800. The first sealing cylinder sleeve 300 and the second sealing cylinder sleeve 400 are fixed on the inner side of the fixed seat 800, and the one-way air inlet device 500 and the one-way air outlet device 600 are fixed on the outer side of the fixed seat 800.
The specific implementation process comprises the following steps: when the reciprocating piston rod mechanism works, the motor 110 is started, the motor 110 rotates to drive the transmission mechanism 120 to rotate, the transmission mechanism 120 drives the eccentric shaft 130 to rotate, the eccentric shaft 130 rotates to drive the reciprocating connecting rod 200 to move left and right, and the reciprocating connecting rod 200 moves left and right to drive the first piston 210 and the second piston 220 to move left and right simultaneously; when the first piston 210 and the second piston 220 move rightward simultaneously, negative pressure is formed in the inner cavity of the first seal cylinder 300, and at this time, external positive pressure gas flows into the first seal cylinder 300 from a passage communicated with the inner cavity of the first seal cylinder 300, because the second gas passage 550 is provided with the second one-way valve 551 only allowing gas to flow from the inner cavity of the first seal cylinder 300 to the first gas outlet connector 530, the external gas can only enter the first gas passage 540 from the first gas inlet connector 520 and then enter the first seal cylinder 300, and at the same time, positive pressure is formed in the second seal cylinder 400, and at this time, positive pressure gas in the inner cavity of the second seal cylinder 400 can only flow from a passage communicated with the inner cavity of the second seal cylinder 400, and because the third gas passage 640 is provided with the third one-way valve 641 only allowing gas to flow from the second gas inlet connector 620 to the inner cavity of the second seal cylinder 400, high pressure gas in the second seal cylinder 400 can only pass through the fourth gas passage 650, flows out of the second outlet joint 630; when the first piston 210 and the second piston 220 move leftward simultaneously, a positive pressure is formed in the inner cavity of the first seal cylinder 300, and at this time, a positive pressure gas in the first seal cylinder 300 flows out from a passage communicating with the inner cavity of the first seal cylinder 300, because the first gas passage 540 is provided with the first check valve 541 which only allows a gas to flow from the first gas inlet joint 520 to the inner cavity of the first seal cylinder 300, the gas in the first seal cylinder 300 can only flow out from the first gas outlet joint 530 through the second gas passage 550 and flow into the connecting pipe 700, and a negative pressure is formed in the second seal cylinder 400, at this time, a positive pressure gas outside the second seal cylinder 400 flows in from a passage communicating with the inner cavity of the second seal cylinder 400, and because the fourth gas passage 650 is provided with the fourth check valve 651 which only allows a gas to flow from the inner cavity of the second seal cylinder 400 to the second gas outlet joint 630, the gas outside the second seal cylinder 400 can only flow into the second seal cylinder 400 from the third gas passage 640, at the moment, the pressure in the connecting pipe 700 is positive, the gas flows through the second gas inlet joint 620 from the connecting pipe 700, then flows into the third gas channel 640, and finally flows into the second seal cylinder sleeve 400, when the first piston 210 moves to the leftmost end, the gas in the first seal cylinder sleeve 300 is completely introduced into the second seal cylinder sleeve 400, because the diameter of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, the volume of the inner cavity of the first seal cylinder sleeve 300 is larger than that of the second seal cylinder sleeve 400, at the moment, the gas in the second seal cylinder sleeve 400 is already in a compressed state, and when the second piston 220 moves to the right, the fourth one-way valve 651 can be quickly and easily pushed open, and the output power of the motor 110 is reduced.
Above-mentioned operation flow and software and hardware configuration only do as the preferred embodiment of the utility model discloses a not therefore restrict the patent scope of the utility model, all utilize the utility model discloses the equivalent transform of doing of description and attached drawing content, or directly or indirectly use in relevant technical field, all the same reason is included in the patent protection scope of the utility model.
Claims (7)
1. A reciprocating oil-free piston micro air pump is characterized in that: comprises a mounting plate, a motor is arranged on the mounting plate, a transmission mechanism is arranged below the mounting plate, one end of the transmission mechanism is connected with an output shaft of the motor, an eccentric shaft is arranged at the other end of the transmission mechanism, a first bearing is arranged at the upper end of the eccentric shaft, a reciprocating connecting rod is sleeved on the periphery of the flange bearing, a first piston is arranged at one end of the reciprocating connecting rod, a second piston is arranged at the other end of the reciprocating connecting rod, a first sealing cylinder sleeve is sleeved on the periphery of the first piston, a second sealing cylinder sleeve is sleeved on the periphery of the second piston, the diameter of the first piston is larger than that of the second piston, the diameter of the first sealing cylinder sleeve is larger than that of the second sealing cylinder sleeve, the end part of the first sealing cylinder sleeve is connected with a one-way air inlet device in a sealing way, the end part of the second sealing cylinder sleeve is connected with a one-way air outlet device in a sealing way, and a connecting pipe is arranged between the one-way air inlet device and the one-way air outlet device.
2. The micro air pump of reciprocating oil-free piston of claim 1, wherein: the one-way air inlet device comprises a first shell, a first air inlet connector and a first air outlet connector are arranged at the upper end of the first shell, a first air channel used for communicating the first air inlet connector with an inner cavity of the first sealing cylinder sleeve is arranged in the first shell, a second air channel used for communicating the first air outlet connector with the inner cavity of the first sealing cylinder sleeve is further arranged in the first shell, a first one-way valve only allowing air to flow from the first air inlet connector to the inner cavity of the first sealing cylinder sleeve is arranged on the first air channel, and a second one-way valve only allowing air to flow from the inner cavity of the first sealing cylinder sleeve to the first air outlet connector is arranged on the second air channel.
3. The micro air pump of reciprocating oil-free piston of claim 2, wherein: the one-way air outlet device comprises a second shell, a second air inlet connector and a second air outlet connector are arranged at the upper end of the second shell, a third air channel used for communicating the second air inlet connector with an inner cavity of a second sealing cylinder sleeve is arranged in the second shell, a fourth air channel used for communicating the second air outlet connector with the inner cavity of the second sealing cylinder sleeve is further arranged in the second shell, a third one-way valve only allowing air to flow from the second air inlet connector to the inner cavity of the second sealing cylinder sleeve is arranged on the third air channel, and a fourth one-way valve only allowing air to flow from the inner cavity of the second sealing cylinder sleeve to the second air outlet connector is arranged on the fourth air channel.
4. The micro air pump of reciprocating oil-free piston of claim 3, wherein: one end of the connecting pipe is connected with the first air outlet joint, and the other end of the connecting pipe is connected with the second air inlet joint.
5. The micro air pump of reciprocating oil-free piston of claim 1, wherein: the transmission mechanism is a synchronous belt transmission mechanism, the synchronous belt transmission mechanism comprises a first synchronous belt wheel, a second synchronous belt wheel and a transmission belt, the diameter of the first synchronous belt wheel is smaller than that of the second synchronous belt wheel, and the first synchronous belt wheel is fixed on an output shaft of the motor.
6. The micro air pump of reciprocating oil-free piston of claim 1, wherein: the first bearing is a flange bearing.
7. The micro air pump of reciprocating oil-free piston of claim 1, wherein: the periphery of the first sealing cylinder sleeve and the periphery of the second sealing cylinder sleeve are sleeved with fixing seats used for respectively fixedly pressing the first sealing cylinder sleeve and the second sealing cylinder sleeve on the one-way air inlet device and the one-way air outlet device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601800.3U CN210799264U (en) | 2019-09-25 | 2019-09-25 | Reciprocating oilless piston miniature air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601800.3U CN210799264U (en) | 2019-09-25 | 2019-09-25 | Reciprocating oilless piston miniature air pump |
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| Publication Number | Publication Date |
|---|---|
| CN210799264U true CN210799264U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921601800.3U Active CN210799264U (en) | 2019-09-25 | 2019-09-25 | Reciprocating oilless piston miniature air pump |
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| Country | Link |
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| CN (1) | CN210799264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529361A (en) * | 2019-09-25 | 2019-12-03 | 厦门加华电力科技有限公司 | Reciprocating no oil piston micro air pump and its working method |
-
2019
- 2019-09-25 CN CN201921601800.3U patent/CN210799264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529361A (en) * | 2019-09-25 | 2019-12-03 | 厦门加华电力科技有限公司 | Reciprocating no oil piston micro air pump and its working method |
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Address after: Room 505, Chuangye building, Chuangye Park, torch hi tech Zone, Huli District, Xiamen City, Fujian Province Patentee after: XIAMEN JIAHUA ELECTRICAL TECHNOLOGY Co.,Ltd. Address before: 350026 Room 505, Pioneer Building, Pioneer Park, Torch High-tech Zone, Xiangan District, Xiamen City, Fujian Province Patentee before: XIAMEN JIAHUA ELECTRICAL TECHNOLOGY Co.,Ltd. |
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