CN203534754U - Miniature low-pressure gauge - Google Patents

Miniature low-pressure gauge Download PDF

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Publication number
CN203534754U
CN203534754U CN201320661858.3U CN201320661858U CN203534754U CN 203534754 U CN203534754 U CN 203534754U CN 201320661858 U CN201320661858 U CN 201320661858U CN 203534754 U CN203534754 U CN 203534754U
Authority
CN
China
Prior art keywords
sector gear
housing
admission piece
miniature low
pressure gauge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320661858.3U
Other languages
Chinese (zh)
Inventor
钱晓吾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI CHENMING INDUSTRY Co Ltd
Original Assignee
JIANGXI CHENMING INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGXI CHENMING INDUSTRY Co Ltd filed Critical JIANGXI CHENMING INDUSTRY Co Ltd
Priority to CN201320661858.3U priority Critical patent/CN203534754U/en
Application granted granted Critical
Publication of CN203534754U publication Critical patent/CN203534754U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a miniature low-pressure gauge. The miniature low-pressure gauge comprises a housing, an indicating dial, a pointer and gauge glass. A lower end of the housing is provided with a housing air inlet nozzle. The miniature low-pressure gauge is characterized in that an air inlet joint is connected with the housing air inlet nozzle, and a silicone rubber bellows is disposed in the housing air inlet nozzle; and a push rod allows the silicone rubber bellows to be downwardly pressed on a sleeve base plate and an air outlet hole at the top of a joint air inlet nozzle to be blocked, the upper end of the push rod is hinged to a sector gear, sector teeth at the top of the sector gear are engaged with teeth of a central gear, and the pointer is installed at the front end of a central shaft. On the basis of a general pressure gauge, the miniature low-pressure gauge employs the silicone rubber bellows having the smaller size to be taken as a core pressure sensor; and, compared with other sensors having the same size and made of metal materials, the silicone rubber bellows can obtain relative larger variation of displacement under the same pressure difference change. The miniature low-pressure gauge has the advantages of smaller outline dimensions, the diameter of 25mm, the scale base of 10kPa and the simpler structure, and is suitable for being installed on portable instruments in environmental protection and medical industries.

Description

Miniature low voltage table
Technical field
The utility model relates to tensimeter, especially relates to a kind of Miniature low voltage table.
Background technology
The manometric outside dimension of the industry production such as current engineering machinery, equipment is all produced by national standard.The outside dimension of general common table is ¢ 60mm; ¢ 100mm; Tri-kinds of specifications of ¢ 150mm.On market, also there are some non-national standard tables, as ¢ 30mm external diameter, for flame snuffer and air compressor machine pressure gauge.What adopt due to most of table sensors in the market is bourdon tube (material is beryllium-bronze), and general purpose pressure gauge shows all at MPa level (more than 0.5MPa).Also have some low-pressure meters, core sensor also adopts beryllium-bronze, but due to processing technology, and its outside dimension is large (that 10kPa is 150mm) all, and feature is that precision is high, cost is high, corrosion-resistant poor.
After 1993, on market, start to have occurred some ¢ 60mm 10kPa (family use), ¢ 100mm 30kPa(engineering use) box-type low-pressure pressure meter for marsh gas, its sensor is to adopt corrosion resistant nitrile rubber diaphragm, and feature is the problems such as the demonstration that solved the in enormous quantities fragmentation of glass " U " type pipe content gauge in transportation, used after a period of time the pollution blackout due to water in glass tube to cause is unclear.Because the table body parts of methane pressure gage all adopt corrosion resistant plastics to make, its technique is relatively simple, cost is relatively low, substantially can meet rural subscribers' request for utilization.Because of its volume or bigger than normal, in some other application industries, still cannot install as pressure and show and use.
Summary of the invention
The purpose of this utility model is to provide that a kind of physical dimension is less, ¢ 25mm 10kPa, simple in structure, be arranged on the Miniature low voltage table on environmental protection and medical industry portable instrument.
The purpose of this utility model is achieved in that
A kind of Miniature low voltage table, comprise housing, display disc, pointer and watch glass, the lower end of housing is provided with housing admission piece, feature is: the outer wall at housing admission piece is processed with external thread, inlet suction port is comprised of the sleeve pipe of the top being connected as a single entity and the joint admission piece of below, joint admission piece is connected with measured medium wireway, and the inwall of the sleeve pipe of opening is processed with the internal thread matching with the external thread of housing admission piece up, and silicon rubber wave duct is placed in housing admission piece, after housing, on plate, be processed with central shaft base, speed adjuster strut, bar clamping plate upper supporting column, bar clamping plate lower supporting rod and sector gear pillar, the lower end of push rod is fixed on the centre above silicon rubber wave duct, push rod is squeezed on cover tube bottom plate downwards by silicon rubber wave duct and blocks the venthole on joint admission piece top, the upper end of push rod is hinged with the bottom of the fan handle of the sector gear of " L " shape, the sector on sector gear top and the engagement of the gear of central gear, speed regulator is arranged on speed adjuster strut by adjusting screw, one end of the spring of intermediate sleeve on bar clamping plate lower supporting rod props up speed regulator, the other end of spring hooks sector gear, the bar clamping plate of " L " shape are comprised of the vertical plywood being connected as a single entity and transverse splint, the top of vertical plywood is fixed on bar clamping plate upper supporting column, the bottom of vertical plywood is fixed on bar clamping plate lower supporting rod, the right-hand member of transverse splint is fixed on the top of sector gear pillar, the bottom of sector gear bearing pin is fixed on sector gear pillar, the middle part that the turn end of the fan handle of sector gear is enclosed within sector gear bearing pin can be rotated around sector gear bearing pin sector gear, the bottom of central shaft is fixed on central shaft base, the middle part that the central gear of vertical plywood below is enclosed within central shaft makes to rotate around sector gear bearing pin, the front end of central shaft is provided with pointer after being upward through the circular hole in the middle of vertical plywood.
Speed regulator be shaped as cam-like.
The external diameter of sleeve pipe be joint admission piece external diameter 3-6 doubly.
Principle of work: measured medium wireway jointing admission piece, medium is through measured medium wireway, joint admission piece enters into housing admission piece, the variation of pressure medium makes the silicon rubber wave duct in housing admission piece produce axial stretching change in displacement upwards, silicon rubber wave duct just promotes push rod and moves upward, push rod and then the rotation of promotion sector crop rotation circumference, sector gear and central gear mesh and drive the rotation of centre tooth crop rotation circumference, due to pointer being housed on central gear, when pressure reduction changes, pointer just indicates the pressure (kPa represents) that measured medium changes on display disc.Bar clamping plate are work mounting center of central gear and sector gear, and guarantee the correct engagement of central gear and sector gear.
The utility model is on the basis of ordinarily manometer, to adopt silicon rubber corrugated tube that volume is less as the pressure transducer of core, compare with the sensor of other same volume metal material manufactures, in the situation that same equal-pressure-difference changes, silicon rubber corrugated tube can obtain relatively large displacement variable.And the utility model has been cancelled in ordinarily manometer independently machine core board (bottom plate), driving member: push rod and sector gear are directly installed in housing, greatly reduces volume, physical dimension; ¢ 25mm * 15mm (thick), much smaller than the size of ordinarily manometer.Therefore, the utlity model has that physical dimension is less, ¢ 25mm 10kPa, the more simple advantage of structure, be applicable to being arranged on environmental protection and medical industry portable instrument.
accompanying drawing explanation
Fig. 1 is the schematic internal view of the utility model (without display disc, pointer and watch glass);
Fig. 2 is longitudinal sectional view of the present utility model.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
A kind of Miniature low voltage table, comprise housing 6, display disc 13, pointer 11 and watch glass 12, the lower end of housing 6 is provided with housing admission piece 7, outer wall at housing admission piece 7 is processed with external thread, inlet suction port 2 is comprised of the sleeve pipe 21 of the top being connected as a single entity and the joint admission piece 22 of below, joint admission piece 22 is connected with measured medium wireway, the inwall of the sleeve pipe 21 of opening is processed with the internal thread matching with the external thread of housing admission piece 7 up, and silicon rubber wave duct 1 is placed in housing admission piece 7, after housing, on plate 61, be processed with central shaft base 63, speed adjuster strut 66, bar clamping plate upper supporting column 62, bar clamping plate lower supporting rod 65 and sector gear pillar 64, the lower end of push rod 5 is fixed on silicon rubber wave duct 1 centre above, push rod 5 is squeezed on cover tube bottom plate 211 downwards by silicon rubber wave duct 1 and blocks the venthole 221 on joint admission piece 22 tops, the upper end of push rod 5 is hinged with the bottom of the fan handle 41 of the sector gear 4 of " L " shape, the sector on sector gear 4 tops and the engagement of the gear of central gear 3, speed regulator 9 is arranged on speed adjuster strut 66 by adjusting screw 91, one end of the spring 8 of intermediate sleeve on bar clamping plate lower supporting rod 65 props up speed regulator 9, the other end of spring 8 hooks sector gear 4, the bar clamping plate 10 of " L " shape are comprised of the vertical plywood 101 being connected as a single entity and transverse splint 102, the top of vertical plywood 101 is fixed on bar clamping plate upper supporting column 62, the bottom of vertical plywood 101 is fixed on bar clamping plate lower supporting rod 65, the right-hand member of transverse splint 102 is fixed on the top of sector gear pillar 64, the bottom of sector gear bearing pin 42 is fixed on sector gear pillar 64, the middle part that the turn end of the fan handle 41 of sector gear 4 is enclosed within sector gear bearing pin 42 can be rotated around sector gear bearing pin 42 sector gear 4, the bottom of central shaft 31 is fixed on central shaft base 63, the middle part that the central gear 3 of vertical plywood 10 belows is enclosed within central shaft 31 makes to rotate around sector gear bearing pin 42, the front end of central shaft 31 is provided with pointer 11 after being upward through the circular hole in the middle of vertical plywood 10.
Speed regulator 9 be shaped as cam-like.
The external diameter of sleeve pipe 21 be joint admission piece 7 external diameter 3-6 doubly.

Claims (3)

1. a Miniature low voltage table, comprise housing, display disc, pointer and watch glass, the lower end of housing is provided with housing admission piece, it is characterized in that: the outer wall at housing admission piece is processed with external thread, inlet suction port is comprised of the sleeve pipe of the top being connected as a single entity and the joint admission piece of below, joint admission piece is connected with measured medium wireway, and the inwall of the sleeve pipe of opening is processed with the internal thread matching with the external thread of housing admission piece up, and silicon rubber wave duct is placed in housing admission piece, after housing, on plate, be processed with central shaft base, speed adjuster strut, bar clamping plate upper supporting column, bar clamping plate lower supporting rod and sector gear pillar, the lower end of push rod is fixed on the centre above silicon rubber wave duct, push rod is squeezed on cover tube bottom plate downwards by silicon rubber wave duct and blocks the venthole on joint admission piece top, the upper end of push rod is hinged with the bottom of the fan handle of the sector gear of " L " shape, the sector on sector gear top and the engagement of the gear of central gear, speed regulator is arranged on speed adjuster strut by adjusting screw, one end of the spring of intermediate sleeve on bar clamping plate lower supporting rod props up speed regulator, the other end of spring hooks sector gear, the bar clamping plate of " L " shape are comprised of the vertical plywood being connected as a single entity and transverse splint, the top of vertical plywood is fixed on bar clamping plate upper supporting column, the bottom of vertical plywood is fixed on bar clamping plate lower supporting rod, the right-hand member of transverse splint is fixed on the top of sector gear pillar, the bottom of sector gear bearing pin is fixed on sector gear pillar, the middle part that the turn end of the fan handle of sector gear is enclosed within sector gear bearing pin can be rotated around sector gear bearing pin sector gear, the bottom of central shaft is fixed on central shaft base, the middle part that the central gear of vertical plywood below is enclosed within central shaft makes to rotate around sector gear bearing pin, the front end of central shaft is provided with pointer after being upward through the circular hole in the middle of vertical plywood.
2. Miniature low voltage table according to claim 1, is characterized in that: speed regulator be shaped as cam-like.
3. Miniature low voltage table according to claim 1 and 2, is characterized in that: the external diameter of sleeve pipe be joint admission piece external diameter 3-6 doubly.
CN201320661858.3U 2013-10-25 2013-10-25 Miniature low-pressure gauge Expired - Fee Related CN203534754U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320661858.3U CN203534754U (en) 2013-10-25 2013-10-25 Miniature low-pressure gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320661858.3U CN203534754U (en) 2013-10-25 2013-10-25 Miniature low-pressure gauge

Publications (1)

Publication Number Publication Date
CN203534754U true CN203534754U (en) 2014-04-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320661858.3U Expired - Fee Related CN203534754U (en) 2013-10-25 2013-10-25 Miniature low-pressure gauge

Country Status (1)

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CN (1) CN203534754U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105699006A (en) * 2015-09-15 2016-06-22 车惠英 Dial plate type micropressure pressure indicator
CN110132454A (en) * 2019-05-29 2019-08-16 南京元感微电子有限公司 Spring force snesor
CN110186596A (en) * 2019-05-29 2019-08-30 南京元感微电子有限公司 A kind of spring force snesor
CN111048354A (en) * 2019-12-06 2020-04-21 武汉航空仪表有限责任公司 Delay adjustable pressure switch
CN111964835A (en) * 2020-08-06 2020-11-20 王泽斌 High-sensitivity range controllable and adjustable vacuum gauge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105699006A (en) * 2015-09-15 2016-06-22 车惠英 Dial plate type micropressure pressure indicator
CN110132454A (en) * 2019-05-29 2019-08-16 南京元感微电子有限公司 Spring force snesor
CN110186596A (en) * 2019-05-29 2019-08-30 南京元感微电子有限公司 A kind of spring force snesor
CN111048354A (en) * 2019-12-06 2020-04-21 武汉航空仪表有限责任公司 Delay adjustable pressure switch
CN111048354B (en) * 2019-12-06 2022-03-11 武汉航空仪表有限责任公司 Delay adjustable pressure switch
CN111964835A (en) * 2020-08-06 2020-11-20 王泽斌 High-sensitivity range controllable and adjustable vacuum gauge
CN111964835B (en) * 2020-08-06 2021-07-30 苏州讯如电子科技有限公司 High-sensitivity range controllable and adjustable vacuum gauge

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140409

Termination date: 20201025