CN2473738Y - Automatic pneumatic switch for air compressor - Google Patents
Automatic pneumatic switch for air compressor Download PDFInfo
- Publication number
- CN2473738Y CN2473738Y CN 01220855 CN01220855U CN2473738Y CN 2473738 Y CN2473738 Y CN 2473738Y CN 01220855 CN01220855 CN 01220855 CN 01220855 U CN01220855 U CN 01220855U CN 2473738 Y CN2473738 Y CN 2473738Y
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- China
- Prior art keywords
- air compressor
- spring
- automatic pneumatic
- switch
- spring support
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Abstract
The utility model discloses an automatic pneumatic switch for air compressor, comprising a switch component, a shell and a bellows pressure sensor. The bellows pressure sensor is arranged under the shell, which is characterized in that: a spring bracket is provided within the shell, a bouncing plate is arranged below the spring bracket, the switch component is provided above the spring bracket, one side of the shell is provided with an unloading valve, and the extending ear of the bouncing plate is provided under the sealing thimble of the unloading valve. The utility model can realize that when the switch cuts off the power, at the same time, the air compressor can automatically release the pressure, so whenever starting the air compressor, the air compressor is in a state of no load.
Description
The utility model relates to a kind of automatic pneumatic switch for air compressor, is a kind of pump of special purpose or the parts or the annex of pumping system.
That Chinese patent once disclosed was a kind of " the single pressure controller of setting formula " (ZL90202817, stop), form by switch block, bellows pressure sensor, drive block, spring base, spring(-supported) mount, spring, limit base, collar nut etc., adopt bellows pressure sensor to drive the break-make of switch block, so can control the commentaries on classics of compressor stops, but the excessive gas system that does not relate to air compressor machine, if also just say and use it not take other measures that air compressor machine is lost heart, just may be in load condition when restarting.Chinese patent also once disclosed a kind of " air compressor machine baroswitch " (ZL92213905, stop), comprise base plate, support, gas spring, air pressure adjustment screw, air pressure top, springboard, unloading one-way valve, be positioned on the support of springboard avris manual off-load switch is housed, the miniature A.C. contactor of touch-type also is housed, and its contact is positioned at the springboard top, and it is by manually easily air compressor machine being carried out pressure release at any time.At present, the air compressor machine pressure controller of supplying on the market (air compressor machine baroswitch), its excessive gas system all adopts indirect mode, and design exists the not high defective of pressure release reliability on the structure.Because when cutting off the electricity supply, overbottom pressure in air compressor cylinder and the exhaust large copper pipe is not discharged, then overbottom pressure will be kept the long period in air compressor cylinder and the exhaust large copper pipe, and when people start air compressor machine behind a short time interval, there is certain air pressure toward contact in cylinder and the exhaust large copper pipe, thereby air compressor machine is restarted under the on-load situation, not only strengthen the startup power consumption of air compressor motor, and bigger starting current all can produce harmful effect to motor itself and near electric equipment, shorten air compressor machine useful life, increased maintenance load.
The purpose of this utility model is to overcome the defective that prior art exists, and a kind of automatic pneumatic switch for air compressor is provided, and to the air compressor machine releasing pressure automatically, air compressor machine is at any time started all be in no load condition when switch is cut off the electricity supply.
For achieving the above object, the solution that the utility model is taked is, a kind of automatic pneumatic switch for air compressor, comprise switch block, housing, bellows pressure sensor, bellows pressure sensor is contained under the housing, it is characterized in that having a spring support to be contained in the housing, adorn under the spring support springboard, on adorn switch block, housing one side is equipped with unloader, and springboard extends ear under the sealing thimble of unloader.
When using the utility model, the air accumulator of air compressor machine communicates with the porch of bellows pressure sensor of the present utility model, and the exhaust large copper pipe of the interface of unloader of the present utility model and air compressor machine joins.Behind the energize, air compressor machine work, pressure-relief valve compression seal.When the air accumulator internal gas pressure greater than a certain set point (as 12.3kg/cm
2) time, the displacement energy that bellows pressure sensor produces under this pressure condition makes springboard overcome elastic force and upwards takeoffs and make the switch block action power dump, air compressor machine quits work, meanwhile because springboard takeoffs its extend sealing thimble that ear will unload valve up jack-up promptly opened unloader the cylinder of air compressor machine and the pressure in the exhaust large copper pipe released.When the pressure of air accumulator is lower than a certain pressure (as 10.2kgf/cm
2) time, springboard resets and switch block is resetted, and power supply is connected automatically, and air compressor machine work is because the effect air compressor machine of unloader starts under uncharge situation.Therefore; the utility model compared with prior art; when being elevated to a set point or being reduced to a set point, the pressure of the output (air accumulator) of air compressor machine can control stopping or changeing of air compressor machine automatically; protect it not to be damaged; can self-braking the time, shed the overbottom pressure in air compressor cylinder and the exhaust large copper pipe again simultaneously; all be in no load condition when air compressor machine is at any time started reliably, reduce power consumption, prolong air compressor machine useful life.
Below in conjunction with embodiment and accompanying drawing thereof the good effect of the utility model and generation thereof is remake description.
Fig. 1 is the front view after present embodiment is cut housing and loam cake open.
Fig. 2 is the A-A cutaway view of Fig. 1.
In the accompanying drawings: 1, collar nut, 2, membrane cover, 3, the bellows hold-down screw, 4, film, 5, housing, 6, springboard extends ear, 7, the sealing thimble, 8, the unloader hold-down screw, 9, unloader, 10, unloader interface nut, 11, loam cake, 12, switch body, 13, voltage regulation screw, 14, the chucking packing ring, 15, the loam cake screw, 16, support plate, 17, spring bearer plate, 18, spring support, 19, the pressure reduction adjusting rod, 20, pressure spring, 21, dividing plate, 22, top flat, 23, spring sheet spring, 24, springboard, 25, the springboard fulcrum plate, 26, slide plate, 27, nylon binding tape, 28, extension spring, 29, lever plate, 30, earthing screw, 31, wire bushing, 32, L shaped fulcrum plate, 33, terminal screw, 34, right contact, 35, upper contact, 36, following touch panel tapping screw, 37, pin, 38, contact, a left side, 39, contact spring, 40, the switch body lid, 41, adjustment (adjusting) lever, 42, the sensor chip spring, 43, pallet, 44, the U-shaped top, 45, rivet, 46, cone shaped spring, 47, earthing screw.
Present embodiment is two groups of contacts of four lines single-pass formula automatic pneumatic switch for air compressor.
As depicted in figs. 1 and 2, a kind of automatic pneumatic switch for air compressor, comprise switch block, housing 5, bellows pressure sensor, bellows pressure sensor is contained in housing 5 times, it is characterized in that having a spring support 18 to be contained in the housing 2, spring support adorn for 18 times a springboard 24, on adorn switch block, housing 5 one sides are equipped with unloader 9, springboard extends ear 6 on the sealing thimble of unloader 97 times.
As shown in Figure 2, put a slice film 4 after putting cone shaped spring 46 on one membrane cover 2, put a pallet 43 on the film 4, live sensor chip spring 42 and U-shaped top 44 with rivet 45 rivetings on the pallet 43, it is 44 perpendicular that sensor chip spring 42 and U-shaped push up, with some bellows hold-down screws 3 membrane cover 2 is fixed on housing 5 times, has just formed an air chamber between membrane cover 2 and the film 4, constitute above-mentioned bellows pressure sensor.2 times order general formulas of membrane cover collar nut 1.Membrane cover 2 also can have single-pass joint or duplex fitting or three-way connection or four-way connection of one's own.These joints communicate with air accumulator, thereby the air pressure of air accumulator makes film 4 displacements make pallet 43 upper and lower displacements that springboard 24 is takeoff simultaneously or resets.
As depicted in figs. 1 and 2, also be provided with pressure regulating device in the spring support 18, one lever plate, 29 1 end bearings on the two side of spring support 18, fulcrum places pressure spring 20, middlely hangs an extension spring 28 in both sides in the bottom of spring support 18, above the other end, the other end of this extension spring 28 hangs on the springboard 24, place spring bearer plate 17 on the pressure spring 20, spring support 18 upper end fixed support plate 16, one voltage regulation screw 13 is arranged in the middle of the support plate 16, these voltage regulation screw 13 rotations make spring bearer plate 17 move up and down at spring support 18, constitute above-mentioned pressure regulating device.By turn voltage regulation screw 13, promptly adjust the degree of compression of pressure spring 20, again by lever plate 29 and on extension spring 28 make springboard 24 take-offs, also just say by pressure regulating device and can adjust the specified air pressure of automatic shutdown (as can be with the air pressure 12.3kgf/cm that shuts down automatically
2Adjust to the maximum air pressure of shutdown automatically 17.8kgf/cm
2), present embodiment has voltage regulation function, has enlarged the scope of application of product.
As shown in Figure 2, L shaped fulcrum plate 32 is placed on ground, the spring support 18 two sides supporting point, has had L shaped fulcrum plate 32 that lever plate 29 and springboard 24 are supported, and makes them fix on swing in the clear under the pressure one.
As depicted in figs. 1 and 2, also be provided with the pressure reduction governor motion on the spring support 18, riveting has an adjustment (adjusting) lever 41 on spring support 18 1 side inwalls, below springboard 24, this adjustment (adjusting) lever 41 is the fulcrum activity with the riveting point, spring support 18 homonymies are provided with a pressure reduction adjusting rod 19 and slide plate 26 outward, this slide plate 26 is controlled at by rotation pressure reduction adjusting rod 19 on the sidewall of spring support 18 and moves up and down in a determining deviation, and this slide plate 26 is pushed down an end of adjustment (adjusting) lever 41, constitutes above-mentioned pressure reduction governor motion.This enforcement has the pressure reduction regulatory function, can be at 2.1kgf/cm as pressure reduction
2And 4.4kgf/cm
2Between regulate, enlarged the product scope of application.
As shown in Figure 1, in order to regulate not malleable of back pressure reduction, be bundled on the sidewall of spring support 18 with a nylon binding tape 27 in pressure reduction adjusting rod 19 lower ends.
As shown in Figure 1, be difficult on the sidewall of spring support 18, coming off easily, also be welded with springboard fulcrum plate 25 in the sidewall of spring support 18 in order to make springboard 24.
As shown in Figure 2, one switch body, 12 attaching line screws 33 and with following touch panel tapping screw 36 fixing right contact 34 and left contacts 38, upper contact 35 is placed on the top flat 22 with pin 37 pinnings, top flat 22 is inserted in the switch body 12 and can moves up and down, place contact spring 39 on the upper contact 35, contact spring 39, one ends are in switch body lid 40, switch body lid 40 is fixed on the switch body 12, constitutes above-mentioned switch block.The switch block contact is in normally off, and after the energized, air compressor machine is worked immediately, and when the pressure of air accumulator during greater than set point, springboard 24 takeoffs top flat 22 is lived in the top, makes upper contact 35 leave right contact 34 and left contact 38, cuts off the electricity supply.When air accumulator air pressure was lower than a set point, springboard 24 resetted, and upper contact 35 resets under the effect of contact spring 39, and air compressor machine starts work again.
As depicted in figs. 1 and 2, in order to improve sensitivity, a spring sheet spring 23 is set on springboard 24.
As shown in Figure 2, do not sustain damage, wire bushing 31 is set at the incoming line of housing 5 in order to make electric wire enter housing 5 back insulating barriers.
As depicted in figs. 1 and 2, in order in the wiring process, not run into the part in the spring support 18, in housing 5, also be equipped with a dividing plate 21.
As shown in Figure 2, for safe in utilization, earthing screw 47 also is housed in housing 5 bottoms.
As shown in Figure 1, unloader 9 usefulness are unloaded valve hold-down screw 8 and are installed on the housing 5 one side extension boards.Configuration one unloader interface nut 10 is convenient to join with the exhaust large copper pipe of air compressor machine on the unloader 9.
As depicted in figs. 1 and 2, with a loam cake screw 15 loam cake 11 is fixed on the housing 5, this loam cake screw 15 blocked in the loam cake 11 that with a chucking packing ring 14 it is come off easily, be convenient to maintenance, this loam cake screw 15 cooperates with support plate 16 1 screws on the spring support 18.
Claims (15)
1, a kind of automatic pneumatic switch for air compressor, comprise switch block, housing (5), bellows pressure sensor, bellows pressure sensor is contained under the housing (5), it is characterized in that: have a spring support (18) to be contained in the housing (2), adorn under the spring support (18) springboard (24), on adorn switch block, housing (5) one sides are equipped with unloader (9), and springboard extends ear (6) under the sealing thimble (7) of unloader (9).
2, a kind of automatic pneumatic switch for air compressor according to claim 1, it is characterized in that: put a slice film (4) after putting cone shaped spring (46) on the membrane cover (2), put a pallet (43) on the film (4), pallet (43) is gone up with rivet (45) riveting and is lived sensor chip spring (42) and U-shaped top (44), sensor chip spring (42) and U-shaped top (44) are perpendicular, with some bellows hold-down screws (3) membrane cover (2) is fixed under the housing (5), just form an air chamber between membrane cover (2) and the film (4), constituted described bellows pressure sensor.
3, a kind of automatic pneumatic switch for air compressor according to claim 2 is characterized in that: membrane cover (2) is order general formula collar nut (1) down, and membrane cover (2) also can have single-pass joint or duplex fitting or three-way connection or four-way connection of one's own.
4, a kind of automatic pneumatic switch for air compressor according to claim 1, it is characterized in that: spring support also is provided with pressure regulating device in (18), one lever plate (29) one end bearings are on the two side of spring support (18), fulcrum is in the bottom of spring support (18), pressure spring (20) is placed on both sides above the other end, one extension spring (28) of middle extension, the other end of this extension spring (28) hangs on the springboard (24), pressure spring (20) is gone up and is placed spring bearer plate (17), spring support (18) upper end fixed support plate (16), one voltage regulation screw (13) is arranged in the middle of the support plate (16), this voltage regulation screw (13) rotation makes spring bearer plate (17) move up and down at spring support (18), constitutes described pressure regulating device.
5, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: L shaped fulcrum plate (32) is placed on ground, spring support (18) the two side supporting point.
6, a kind of automatic pneumatic switch for air compressor according to claim 1, it is characterized in that: spring support also is provided with the pressure reduction governor motion on (18), on spring support (18) one side inwalls, riveting has an adjustment (adjusting) lever (41) below springboard (24), this adjustment (adjusting) lever (41) is the fulcrum activity with the riveting point, spring support (18) homonymy is provided with a pressure reduction adjusting rod (19) and slide plate (26) outward, this slide plate (26) is controlled on the sidewall of spring support (18) by rotation pressure reduction adjusting rod (19) and moves up and down in a determining deviation, this slide plate (26) is pushed down an end of adjustment (adjusting) lever (41), constitutes described pressure reduction governor motion.
7, a kind of automatic pneumatic switch for air compressor according to claim 6 is characterized in that: be bundled on the sidewall of spring support (18) with a nylon binding tape (27) in pressure reduction adjusting rod (19) lower end.
8, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: also be welded with springboard fulcrum plate (25) in the sidewall of spring support (18).
9, a kind of automatic pneumatic switch for air compressor according to claim 1, it is characterized in that: a switch body (12) attaching line screw (33) and with the down fixing right contact (34) of touch panel tapping screw (36) and left contact (38), upper contact (35) is placed on top flat (22) and goes up with pin (37) pinning, top flat (22) is inserted in the switch body (12) and can moves up and down, upper contact (35) is gone up and is placed contact spring (39), contact spring (39), one end is in switch body lid (40), switch body lid (40) is fixed on the switch body (12), constitutes described switch block.
10, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: a spring sheet spring (23) is set on springboard (24).
11, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: the incoming line at housing (5) is provided with wire bushing (31).
12, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: also be equipped with a dividing plate (21) in housing (5).
13, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: in housing (5) bottom earthing screw (47) is housed also.
14, a kind of automatic pneumatic switch for air compressor according to claim 1 is characterized in that: unloader (9) is installed on housing (5) the one side extension boards with unloading valve hold-down screw (8).
15, according to claim 1 or 4 described a kind of automatic pneumatic switch for air compressor, it is characterized in that: loam cake (11) is fixed on the housing (5) with a loam cake screw (15), this loam cake screw (15) is blocked in the loam cake (11) with a chucking packing ring (14), this loam cake screw (15) cooperates with support plate (16) one screws on the spring support (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220855 CN2473738Y (en) | 2001-04-14 | 2001-04-14 | Automatic pneumatic switch for air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220855 CN2473738Y (en) | 2001-04-14 | 2001-04-14 | Automatic pneumatic switch for air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473738Y true CN2473738Y (en) | 2002-01-23 |
Family
ID=33638299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01220855 Expired - Lifetime CN2473738Y (en) | 2001-04-14 | 2001-04-14 | Automatic pneumatic switch for air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473738Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976631A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Pressure switch with load releasing function |
| CN101498294B (en) * | 2008-02-02 | 2011-04-06 | 詹奇峰 | Pressure control adjusting device of compressor |
| CN108493050A (en) * | 2018-05-29 | 2018-09-04 | 浙江力夫自控技术股份有限公司 | Pressure switch can be shut down manually |
-
2001
- 2001-04-14 CN CN 01220855 patent/CN2473738Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498294B (en) * | 2008-02-02 | 2011-04-06 | 詹奇峰 | Pressure control adjusting device of compressor |
| CN101976631A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Pressure switch with load releasing function |
| CN101976631B (en) * | 2010-10-15 | 2012-10-10 | 吴相民 | Pressure switch with load releasing function |
| CN108493050A (en) * | 2018-05-29 | 2018-09-04 | 浙江力夫自控技术股份有限公司 | Pressure switch can be shut down manually |
| CN108493050B (en) * | 2018-05-29 | 2023-11-24 | 浙江力夫自控技术股份有限公司 | Pressure switch capable of being manually turned off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110414 Granted publication date: 20020123 |