CN2270968Y

CN2270968Y - Single diaphragm type pressure gage

Info

Publication number: CN2270968Y
Application number: CN 96218573
Authority: CN
Inventors: 周秋松
Original assignee: QINRUI INDUSTRY Co Ltd
Current assignee: QINRUI INDUSTRY Co Ltd
Priority date: 1996-08-27
Filing date: 1996-08-27
Publication date: 1997-12-17
Anticipated expiration: 2006-08-27

Abstract

The utility model provides a single diaphragm type pressure gage, which comprises a base with an air inlet tube. A diaphragm is arranged on the base, and the diaphragm is compacted by a gage shell which is contained with the base; the center of the diaphragm in the gage shell is axially provided with a spring which is sheathed with a shaft rod, a deflector rod which is butted with the spring is fixed with the shaft rod; a coil spring is arranged at the upper section of the shaft rod, and a gage needle which is linked with the external extending end of the shaft rod is arranged on the top surface of the gage shell. The utility model is characterized in that a pad is arranged between the annular edge of the base and the metal diaphragm, and the lower part of the gage shell with the same thickness is provided with an annular ring hoop with a star-shaped cross section; the base, the pad and the metal diaphragm are inlaid and clamped together by the ring hoop with a star-shaped cross section; the shaft rod is movably inserted in a cylinder seat which is fixed with the metal diaphragm.

Description

A kind of tensimeter of monofilm chip

The utility model relates to a kind of manometer, particularly a kind of tensimeter of monofilm chip.

Tensimeter is a kind of Common Instrument in industry and the daily life, its structure as shown in Figure 1, on ring disc-shaped base 16, be provided with protruding draft tube 25, in the ring dish 15 of ring disc-shaped base 16, put secondary diaphragm 14 from bottom to top successively, spill gasket ring 12, the following ring edge 111 of primary diaphragm 13 and watchcase 11, secondary diaphragm 14, spill gasket ring 12, the ring dish 15 of the following ring cause base of primary diaphragm 13 and watchcase is folded the thickness direction clip that falls along it and is sealed, top, center cementation one volute spring 18 of the primary diaphragm 13 in watchcase 11, spring 18 axial movable plug-in mounting one axostylus axostyles 20, axostylus axostyle 20 circumferentially is horizontally set with one and touches the dead man of dialling 19 mutually with spring, one end is housed and the watchcase inwall fixes at axostylus axostyle 20 epimeres, the wind spring 24 that the other end and axostylus axostyle epimere fix, be fixed with a dial plate 21 at door shape watchcase 11 end faces, dial plate top have one with axostylus axostyle 20 sections of the leaning out indicator 23 of interlock mutually, be provided with one and plug corresponding to connecting spring 18 places in primary diaphragm 13 bottoms with the 12 center pit activities of spill gasket ring, and the push rod 17 with primary diaphragm 13 contacts mutually is inserted with fixed head 22 above the section of leaning out of axostylus axostyle 20.The shortcoming that this wirking pressure table exists is as follows: first, because the last bulge loop dish 15 of base 16 is the part of equal thickness not, and the quantity of parts that is positioned at it is more, therefore, the thickness deviation of its accumulative total and gap cumulative amount change also just greatly, so it is very difficult wanting to make in above-mentioned each parts ring dish 15 that caulked goes into to be difficult to be out of shape easily, and, also be difficult to reach compressing fully and positiver sealing along thickness direction, and can't compress fully and well sealing along thickness direction, then can cause leaking gas or diaphragm loosening, the displacement distortion that causes its back that is stressed to be produced finally causes the pointer index error bigger.Not only influenced pointing accuracy, but also easily caused equipment breakdown, and also can cause casualties sometimes.The second, because of volute spring and primary diaphragm 13 adopts bonding way, and both are one hard one soft moving link, and therefore, very easy taking off split and caused connecting and lost efficacy.The 3rd, owing to pressure indicator move pendulum be to rely on secondary diaphragm 14 bottoms charge into the pressure sensitive of gas and successively the pressure transmission reach, because transferring elements is many, thereby, the transmission decay of power, deviation are big, both be unfavorable for accurately debugging before the product export,, and therefore caused the decline of measuring accuracy again easily in use because of reasons such as component wear, distortion cause accumulated error.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of prior art, and provide a kind of simple in structure, component number is few, be easy to press the embedding sealing and have the tensimeter of a kind of monofilm chip of higher pointing accuracy.

The purpose of this utility model is to realize by following technical scheme:

The utility model has a base that has an air admission hole, on base, be placed with a diaphragm, one watchcase contains mutually with base and diaphragm is compressed, diaphragm central shaft in watchcase to be provided with one with the axostylus axostyle volute spring of fit mutually, what contact mutually with volute spring is a driving lever that fixes with axostylus axostyle, the axostylus axostyle epimere is provided with to hold one by one with axostylus axostyle and links to each other, the wind spring that the other end links to each other with watchcase, the watchcase end face be provided with one with axostylus axostyle outside visit the end indicator of interlock mutually, the last fixed head of the outer spy of axostylus axostyle, it is characterized in that: between the ring edge of base and metallic membrane a pad is arranged, the bottom of the watchcase of equal thickness is a ring-type; The hoop of tee section,

The hoop of tee section is clipped together base, pad and metallic membrane embedding, and axostylus axostyle is that movable dress is inserted in the cylinder base that fixes with metallic membrane.

Therefore: remarkable result of the present utility model is as follows:

The first because body and the hoop of watchcase is equal thickness, therefore, when pressing, its each partly distortion consistent and can be easily, the clamping diaphragm that coincide, make pad, metallic membrane, base ring edge and watchcase hoop along thickness direction closely pressing easily seal.The second, because number of components reduces, and links together cylinder base and metallic membrane by screw, thereby, be difficult for taking off and split and connect more reliable.The 3rd, because metallic membrane is the disk body with big ring-type fold and pressurized acting surface, therefore, the air chamber of diaphragm bottom is bigger, and its acting force is big and directly, and can pass to spring by diaphragm and convert the indicator rotation to, therefore, its error is little, precision is high, be active in one's movements.The 4th, because component number reduces, make that decay is little in the force transmission process, deviation is little, be easy to the debugging before the product export, also easily guarantee service precision.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing:

Fig. 1 is existing manometric structural drawing.

Fig. 2 is a structural drawing of the present utility model.

Be described in detail below in conjunction with 2 pairs of concrete structures of the present utility model of accompanying drawing:

The utility model has a base 16 that has a draft tube 25, with base 16 mutually pressing be the watchcase 11 of hollow.Between base 16 and watchcase 11 pressings place, a diaphragm 13 is arranged, diaphragm 13 central upper connect an axostylus axostyle 20, be with spring 18 on the axostylus axostyle 20, what contact mutually with spring 18 is a driving lever 19 that fixes with axostylus axostyle 20, axostylus axostyle 20 epimeres are visited and are stretched out watchcase 11 roofs and be connected with an indicator 23 with its commentaries on classics pendulum, be fixed with a dial plate 21 on watchcase 11 roof tops, dial plate 21 by fixed head 22 clampings on watchcase 11 roofs, axostylus axostyle 20 epimeres in watchcase 11 are provided with to hold one by one with axostylus axostyle 20 and link to each other, the wind spring 24 that the other end links to each other with watchcase 11 inwalls, it is characterized in that: between the ring edge 161 of base 16 and metallic membrane 13 surface of contact a pad 26 is arranged, a ring-type is arranged at watchcase 11 bottoms of equal thickness

The hoop 112 of tee section, The hoop 112 of tee section closes ring edge 161, annular gasket 26 and metallic membrane 13 three's embedding crampings of T shape base 16 and is sealed, the bottom of metallic membrane 13 has constituted one directly and the air chamber 30 that connects of draft tube 25 with the inboard pit of the ring edge 161 of T shape base 16, the axostylus axostyle 20 of metallic membrane 13 central upper is that activity inserts in periphery and is with in cylinder base 27 slotted eyes 31 of spring 18, and cylinder base 27 fixes with metallic membrane 13 centers.Referring to Fig. 2.

Wearing stubborn screw 28 from bottom to top by one between cylinder base 27 and metallic membrane 13 centers is connected and fixed.Referring to Fig. 2.

At screw 28 and offer between the bottom, center of metallic membrane 13 of annular corrugations 131 and be folded with a sealing gasket 29, a boss 271 is arranged at cylinder base 27 bottoms, has the slotted eye 31 with the movable plug-in mounting of axostylus axostyle 20 hypomeres on the cylinder base 27.Referring to Fig. 2.

The utility model principle of work as shown in Figure 2.

After air pressure charges into air chamber 30 by draft tube 25, pressure will produce directly upwards expulsive force to the metallic membrane 13 of its top, this expulsive force will be by attachment screw 28, pad 29 the effect that is connected and fixed acting force is passed to the cylinder base 27 and the spring 18 of diaphragm opposite side, spring 18 is produced with driving lever 19 contacts and drive indicator 23 rotations.

Claims

1: a kind of tensimeter of monofilm chip, one base (16) that has draft tube (25) is arranged, with base (16) mutually pressing be the watchcase (11) of hollow, between base (16) and watchcase (11) pressing place, a diaphragm (13) is arranged, diaphragm (13) central upper connects an axostylus axostyle (20), be with spring (18) on the axostylus axostyle (20), what contact mutually with spring (18) is a driving lever (19) that fixes with axostylus axostyle (20), axostylus axostyle (20) epimere is visited and is stretched out watchcase (11) roof and be connected with an indicator (23) with its commentaries on classics pendulum, be fixed with a dial plate (21) on watchcase (11) roof top, dial plate (21) by fixed head (22) clamping on watchcase (11) roof, axostylus axostyle (20) epimere in watchcase (11) is provided with one by one, and end links to each other with axostylus axostyle (20), the wind spring (24) that the other end links to each other with watchcase (11) inwall, it is characterized in that: between the ring edge (161) of base (16) and metallic membrane (13) surface of contact a pad (26) is arranged, a ring-type is arranged at the watchcase of equal thickness (11) bottom The hoop of tee section (112), The hoop of tee section (112) closes ring edge (161), annular gasket (26) and metallic membrane (13) three's embedding cramping of T shape base (16) and is sealed, the bottom of metallic membrane (13) has constituted one directly and the air chamber (30) that connects of draft tube (25) with the inboard pit of the ring edge (161) of T shape base (16), the axostylus axostyle (20) of metallic membrane (13) central upper is that activity inserts in periphery and is with in cylinder base (27) slotted eye (31) of spring (18), and cylinder base (27) fixes with metallic membrane (13) center.

2: the tensimeter according to the described a kind of monofilm chip of claim 1 is characterized in that: wear stubborn screw (28) from bottom to top by one between cylinder base (27) and metallic membrane (13) center and be connected and fixed.

3: according to the tensimeter of the described a kind of monofilm chip of claim 2, it is characterized in that: at screw (28) and offer between the bottom, center of metallic membrane (13) of annular corrugations (131) and be folded with a sealing gasket (29), one boss (271) is arranged at cylinder base (27) bottom, has the slotted eye (31) with the movable plug-in mounting of axostylus axostyle (20) hypomere on the cylinder base (27).