CN208847392U - Bi-bellow differential pressure gauge - Google Patents

Abstract

The utility model discloses a kind of bi-bellow differential pressure gauges, its key points of the technical solution are that internal component includes pedestal, balance plate and two bellowss；Air inlet pipe there are two being also fixedly connected on pedestal, air inlet pipe and bellows communicate；Amplifier module is additionally provided on pedestal；Amplifier module includes setting fixed disk and rotation axis；Fixed disk side is fixedly connected with rectangular slab；The top of fixed disk is equipped with fanning strip, and fanning strip is fixedly connected with rotor plate close to one end of pedestal；Bolt has arc panel on the side wall of balance plate, and one end of arc panel is hinged with connecting plate, and one end of connecting plate and rotor plate are hinged；It is fixedly connected with rack gear on fanning strip, is fixedly connected with gear in rotation axis；The utility model solves the problem that pressure difference variation is too small, and pressure difference list index amplitude of variation is small, causes record measurement result inaccurate.By amplifier module, the pointer amplitude of variation of differential pressure indicator is made to become larger, it being capable of accurate log.

Description

Bi-bellow differential pressure gauge

Technical field

The utility model relates to pressure sensing arts, more specifically, it is related to a kind of bi-bellow differential pressure gauge.

Background technique

The technique stream that stainless steel bi-bellow differential pressure gauge is suitable for chemical industry, changes the industrial departments such as pricker, metallurgy, electric power, nuclear power The parameters such as differential pressure, the flow of various gas mediums are measured in journey.Instrument structure is all made of stainless steel, measurement system therein It unites (bi-bellow urgency connecting component), pressure guiding system (including connector, conduit etc.) is reasonable using unique construction design, technique is first Into, have many advantages, such as that small in size, light-weight, stability is good, long service life, novel appearance, adaptable.The company of instrument connector The form of connecing has run-in index (can directly connect with three valve groups) and two kinds of inclined, can adapt to the mating installation of different clients.

It now can refer to the Chinese utility model patent that Authorization Notice No. is CN202770584U, it discloses a kind of dual damascenes Pipe differential pressure gauge, the bi-bellow differential pressure gauge include pressure-sensitive connector, lock-screw, spring washer, pressure-sensitive bottom plate, bellows, lever Board group part, driver core, mounting post.Lever plate component and pressure-sensitive bottom plate form " I " fonts bracket, in lever plate component and sense Two bellowss are provided between press, in pressure-sensitive bottom plate and two bellows corresponding positions, driver core is located at lever board group The top of part, and be fixed in mounting post by lock-screw, built-in sector gear plectrum bar and transmission steel ball, pass on driver core Dynamic steel ball is in contact with sector gear driving lever.

But common bi-bellow differential pressure gauge, which is only applicable in differential pressure, changes bigger differential pressure, it is lesser changing to differential pressure When side is measured, because differential pressure variation is too small, then bi-bellow differential pressure gauge indicators turn amplitude is too small, can not observe difference well The variation of pressure causes to be easy to have recorded mistake when recording bi-bellow differential pressure gauge measurement result, obtains the measurement result of mistake.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of bi-bellow differential pressure gauge, The result of measurement can be amplified by amplifier module, keep the amplitude of variation of differential pressure indicator bigger, it, can when being recorded It is accurately recorded, achievees the purpose that accurate recording measurement result.

To achieve the above object, the utility model provides following technical solution: a kind of bi-bellow differential pressure gauge, and internal group Part includes pedestal, the balance plate above pedestal and two between pedestal and balance plate bellowss, two ripples Pipe is symmetrical arranged and is located at the both ends in base length direction；

The upper and lower ends of bellows are fixedly connected with pedestal and balance plate respectively；Also be fixedly connected on pedestal there are two into Tracheae, air inlet pipe and bellows communicate；Amplifier module is additionally provided on pedestal；

Amplifier module includes the fixed disk on pedestal and the rotation axis with fixed disk grafting, and rotation axis is located at admittedly At the center of price fixing, rotation axis can be rotated in fixed disk along its center line；

Fixed disk is fixedly connected with rectangular slab far from the side of balance plate；

The top of fixed disk is equipped with fanning strip, and fanning strip is fixedly connected with rotor plate close to one end of pedestal；

Bolt has vertical arc panel on the side wall of balance plate one end, and arc panel is hinged with connection far from one end of balance plate Plate, one end and rotor plate far from arc panel of connecting plate are hinged；

It is fixedly connected with rack gear on the periphery of fanning strip, is fixedly connected in rotation axis and rack gear meshed gears.

By using above-mentioned technical proposal, now common differential pressure indicator changes lesser situation for pressure difference and measures When, because the difference of pressure difference is too small, the variation of differential pressure indicator is unobvious, is easy to cause the result inaccuracy of measurement；Amplification group Part can will amplify the variation of pressure difference, and then it is more obvious to change the pointer of differential pressure indicator, improves the result of measurement；It surveys When amount, gas enters in bellows from two air inlet pipe simultaneously, because air pressure in two bellowss is different, then two bellowss Extended length it is also different, and then the height for causing the both ends of balance plate to rise is different, and then leads to balance plate run-off the straight, and The also run-off the straight of the hinged arc panel in balance plate one end, and then fanning strip rotation is pushed, fanning strip and rotation axis are closed by rack gear Gear meshes together, so rotation axis also rotates, and small pressure difference variation, is transmitted to by arc panel and connecting plate When on fanning strip, have been able to that fanning strip is made to rotate biggish angle, then rotation axis can rotate biggish angle, the finger of differential pressure indicator Needle meeting and rotation axis connection, so the pointer of differential pressure indicator can rotate biggish precision, the variation of differential pressure indicator is become apparent, and makes to measure Result it is more accurate.

The utility model is further arranged to: round bar is fixedly connected on rectangular slab, round bar passes through rotation straight up Plate, is fixedly connected with that there are two baffle rings on round bar, and two baffle rings are fitted in respectively on two surfaces of rotor plate.

By using above-mentioned technical proposal, round bar can be supported rotor plate, and rotor plate and connecting plate are hinged, when even When fishplate bar drives rotor plate movement, rotor plate can be rotated by the center of circle of round bar, then be fixedly connected with fanning strip with rotor plate It rotates with it, realizes the rotation of rotor plate and fanning strip, and the baffle ring on round bar, rotor plate can be limited, anti-rotation stop Movable plate is moved along the axis direction of round bar.

The utility model is further arranged to: the pedestal is fixedly connected there are two symmetrically setting on the side wall of fixed disk The convex block set is threadedly coupled on convex block there are two gag lever post, and the upper end of gag lever post is arranged close to balance plate lower surface but is got along well The following table face contact of balance plate.

By using above-mentioned technical proposal, if pressure difference variation is excessive, the inclined angle that will lead to balance plate becomes Must be bigger, then the arc panel connected with balance plate can move more strokes, and then the angle for causing connecting plate and fanning strip to rotate Degree is bigger, but fanning strip and the angle of connecting plate movement can not be infinitely great, so being easy to cause when pressure difference changes greatly The damage of connecting plate and fanning strip results in the need for replacement connecting plate and fanning strip, makes cost increase；Gag lever post can be to balance plate Inclined angle is defined, and then prevents the damage of connecting plate and fanning strip, reduces cost.

The utility model is further arranged to: the upper end of the gag lever post is fixedly connected with disk.

By using above-mentioned technical proposal, if the upper end of gag lever post does not have fixed disk, gag lever post and balance plate contact Area it is smaller, and then the pressure for causing balance plate to be subject to is larger, during balance plate and gag lever post collide, is easy flat Weighing apparatus plate damages, and influences the practical of balance plate；Fixed disk can increase the contact area of gag lever post and balance plate, and then prevent The breakage of balance plate enables balance plate normal use.

The utility model is further arranged to: base upper surface and balance plate lower surface between described two bellowss Be fixedly connected to link block, be equipped with elastic plate between two link blocks, the upper and lower ends of elastic plate respectively with two link blocks It is detachably connected.

By using above-mentioned technical proposal, gag lever post can only be defined the inclined angle of balance plate, if into wave The air pressure of line pipe is excessive, and the length that will lead to bellows becomes longer, and balance plate is made to do ascending motion, but balance plate and arc Plate is fixedly connected, and balance plate rises, and will drive arc panel rising, and then arc panel is caused to drive connecting plate movement, makes fanning strip Rotation, causes the indicator of bi-bellow differential pressure gauge to rotate, and causes the result inaccuracy of measurement；Elastic plate can be bent, therefore Elastic plate can prevent balance plate from rising, and will not hinder the inclination of balance plate, keep the result of measurement more accurate.

The utility model is further arranged to: the elastic plate is set far from the side of link block there are two fixed plate, fixed Uniform grafting is there are two the second bolt on plate, and the second bolt passes through elastic plate and link block is threadedly coupled.

By using above-mentioned technical proposal, the main function of elastic plate is the rising for preventing balance plate, so elastic plate meeting By biggish power, and elastic plate can also be bent, thus using the time it is longer after, will lead to the flexibility decrease of elastic plate, very Breakage can occur to elastic plate, so elastic plate needs timing to replace, elastic plate is fixed by the cooperation of bolt and fixed plate to be connected It connects on link block, is convenient for changing elastic plate, and elastic plate discord bolt directly contacts, and can prevent bolt from causing to elastic plate It squeezes, causes elastic plate damaged.

The utility model is further arranged to be socketed with whirlpool spring in the rotation axis, and whirlpool spring is in one end and the rotation in the center of circle Axis is fixedly connected, and the other end of whirlpool spring is fixedly connected with the surface of fixed disk.

By using above-mentioned technical proposal, when rotation axis Forced rotation, it can exert a force to whirlpool spring, so that whirlpool spring is stored power, rotating Axis no longer stress when, whirlpool spring release savings power, rotate rotation axis, and then pointer is made to automatically reset, need not rely on sector Plate can reset, and when rotation axis rotation, can also generate thrust to fanning strip, can increase the speed of fan-shaped sheet reset, therefore Whirlpool spring plays the role of auxiliary reset, can be improved the speed of bi-bellow differential pressure gauge reset.

The utility model is further arranged to: being fixedly connected with riser on the pedestal, is opened up in fixed disk there are two right The arcuate socket of title；

The first bolt is plugged in arcuate socket, the lower end of the first bolt and connecting plate are threadedly coupled；

The fixture nut being fitted in fixed panel surface is threaded on first bolt.

By using above-mentioned technical proposal, because fixed disk is round, the junction of rotor plate and fixed disk does not have Fixed position, then when processing the mounting hole of the first bolt of grafting on disk, it should be noted that the Working position of mounting hole, causes to add Work difficulty, is changed to arcuate socket for mounting hole, and it is very accurate not need to position the position of arcuate socket when processing, convenient for adding Work can be improved the speed of processing, when installing fixed disk, it is only necessary to which the position for regulating fixed disk passes through arcuate socket It can make the first bolt any position that fixed disk be fixed.

The utility model is further arranged to: the fixed disk is equipped with baffle, baffle and fixed disk far from the side of riser Between set there are two sleeve, one end of two sleeves is fitted in the lower surface of baffle, and the other end of two sleeves is bonded respectively In fixed disk and rotation plate surface；

Grafting is there are two screw on baffle, and screw passes through sleeve and fixed panel surface is threadedly coupled；Round bar upper end and baffle It is fixedly connected.

By using above-mentioned technical proposal, the center of rotation of round bar position rotor plate, and round bar is rotor plate and fanning strip Supporting point be easy to cause round bar run-off the straight, and then rotor plate and fanning strip can not so the power that round bar is subject to is larger Movement, baffle is fixed in fixed disk and rotor plate by the cooperation of sleeve and screw, and the upper end of round bar and baffle are fixed Connection, so baffle can be supported the upper end of round bar, prevents round bar stress run-off the straight, it is ensured that rotor plate and fanning strip It being capable of normal rotation.

In conclusion the utility model has the advantages that compared with the prior art

1. being fixedly connected on pedestal, there are two bellowss, and the upper end of wave father-in-law's pipe is fixedly connected with balance plate, bolts on balance plate Arc panel, be hinged with connecting plate on arc panel, rotor plate be hinged on connecting plate, is fixedly connected with fanning strip on rotor plate, Rack gear is fixedly connected on fanning strip, wave father-in-law can be managed in interior gas with rack gear meshed gears by being fixedly connected in rotation axis The pressure difference of body amplifies, and keeps the pointer amplitude of variation of differential pressure indicator bigger, convenient for accurately recording the result of measurement；

2. being fixedly connected on pedestal there are two convex block, it is threaded with gag lever post on convex block, gag lever post and balance plate are close One end be fixedly connected with disk, gag lever post can control the inclined angle of balance plate, to limit the measurement upper limit of differential pressure indicator, Prevent the excessive damage for leading to amplifier module of pressure difference.

Detailed description of the invention

Fig. 1 is the overall structure figure of embodiment；

Fig. 2 is the structure chart that internal component positional relationship is highlighted in embodiment；

Fig. 3 is the overall structure figure of internal component in embodiment；

Fig. 4 is the structure chart that amplifier module is highlighted in embodiment；

Fig. 5 is the structure chart that whirlpool spring positional relationship is highlighted in embodiment；

Fig. 6 is the structure chart that baffle and fixed disk and rectangular slab connection relationship are highlighted in embodiment.

In figure: 1, pedestal；11, riser；12, convex block；13, gag lever post；14, disk；2, balance plate；21, groove；22, arc Shape plate；23, connecting plate；3, bellows；31, cylinder；32, baffle ring；33, nut；34, air inlet pipe；4, amplifier module；41, fixed Disk；42, rectangular slab；43, arcuate socket；44, the first bolt；45, fixture nut；46, rotation axis；47, whirlpool spring；471, block；5, Fanning strip；51, rack gear；52, gear；53, rotor plate；54, through-hole；6, round bar；61, fixed ring；7, baffle；71, sleeve；72, Screw；8, link block；81, elastic plate；82, fixed plate；83, the second bolt；9, differential pressure watch case；10, internal component.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment: a kind of bi-bellow differential pressure gauge as depicted in figs. 1 and 2, including differential pressure watch case 9 and is set to poor table Internal component 10 in shell 9, shell 9 play the role of protection to internal component 10, prevent internal component 10 by external force shadow It rings and cannot work.

As shown in Figure 3 and Figure 4, internal component 10 includes pedestal 1 and the balance plate 2 above pedestal 1；Pedestal 1 with And two bellowss 3 are set between balance plate 2；The both ends of bellows 3 are detachably connected with pedestal 1 and balance plate 2 respectively；Bottom The side of seat 1 is equipped with amplifier module 4；Gas enters simultaneously in two bellowss 3, because there are pressure difference between gas, then gas Will lead to that the length that two bellowss 3 stretch is different, then the height that the both ends of balance plate 2 tilt is different, therefore balance plate 2 can because Pressure difference generates different gradients, and balance plate 2 is passed through by the difference of inclined angle so that pressure difference is passed to amplifier module 4 The amplification for crossing amplifier module 4 shows pressure difference by the pointer of differential pressure indicator, because pressure difference passes through the amplification of amplifier module, So the variation of pressure difference becomes apparent from, convenient for observation pressure difference, it is ensured that the correctness of the pressure difference of record.

As shown in figure 3, the both ends of bellows 3 are fixedly connected to cylinder 31, on the side wall of pedestal 1 and balance plate 2 The groove 21 that can accommodate cylinder 31 is offered, baffle ring 32 and nut 33 are threaded on cylinder 31；Baffle ring 32 is fitted in Pedestal 1 is close to the surface of balance plate 2 or balance plate 2 on the surface of pedestal 1；Nut 33 is fitted in pedestal 1 far from bellows 3 Or on surface of the balance plate 2 far from bellows 3；To be fixedly connected with air inlet pipe 34 in 31 lower end of cylinder on pedestal 1；Air inlet pipe 34 are used to connect the escape pipe of outflow measurement gas；After bellows 3 uses the time longer, it will lead to bellows 3 and breakage occur, it is close The problem of Feng Buyan causes the measurement result of bi-bellow differential pressure gauge inaccurate, therefore bellows 3 is detachably connected, convenient for reaching Poorly sealed bellows 3 is replaced, and the accuracy of bi-bellow differential pressure gauge measurement result is improved.

As shown in figure 4, amplifier module 4 includes the fixed disk 41 on pedestal 1 and is fixedly connected with fixed disk 41 Rectangular slab 42；The side of pedestal 1 is fixedly connected with vertical riser 11, is opened up in fixed disk 41 there are two symmetrically arranged arc Hole 43, and the center of circle of arcuate socket 43 and the center of circle of fixed disk 41 are overlapped；The first bolt 44, the first bolt are plugged in arcuate socket 43 44 pass through arcuate socket 43 and the threaded connection of riser 11；Fixture nut 45 is threadedly coupled on first bolt 44, fixture nut 45 is bonded On the surface of fixed disk 41；Turning fixture nut 45 can make fixed disk 41 and riser 11 be bonded or separate, and arcuate socket 43 Fixed disk 41 is adjusted when the convenient fixed disk 41 to installation.

As shown in Figure 3 and Figure 5, the center of circle of fixed disk 41 goes out to be plugged with rotation axis 46, and rotation axis 46 can be in fixed disk Along its axis rotation on 41；Fixed disk 41 is equipped with fanning strip 5, fixed company on the periphery of fanning strip 5 far from the side of pedestal 1 It is connected to rack gear 51, being fixedly connected in rotation axis 46 can be with 51 meshed gears 52 of rack gear；Fanning strip 5 is far from rotation axis 46 One end is fixedly connected with rotor plate 53；One end of balance plate 2 is fixedly connected with arc panel 22, and arc panel 22 is far from balance plate 2 One end is hinged with connecting plate 23；The one end of one end and rotor plate 53 far from fanning strip 5 of connecting plate 23 far from arc panel 22 is hinged； Round bar 6 is fixedly connected on rectangular slab 42, the upper end of round bar 6 passes through rotor plate 53, and rotor plate 53 can be 6 turns around round bar It is dynamic；It is fixedly connected on round bar 6 there are two fixed ring 61, fixed ring 61 is respectively on the side wall of rotor plate 53 (with reference to Fig. 4)；Gu Determining ring 61 can be when value rotor plate 53 is moved along the axis direction of round bar 6；Balance plate 2 because of pressure difference run-off the straight because Arc panel 22 is fixedly connected with balance plate 2, therefore arc panel 22 is moved with balance plate 2, is hinged with connecting plate 23 on arc panel 22, Connecting plate 23 is again and rotor plate 53 is hinged, so arc panel 22 will drive the movement of connecting plate 23, connecting plate 23 drives rotor plate 53 Movement, but rotor plate 53 is merely able to round bar 6 as center of circle rotation, therefore the meeting of rotor plate 53 turns because of the inclination of balance plate 2 The dynamic fanning strip 5 being fixedly connected with rotor plate 53 can be moved with the rotation of rotor plate 53, and the rack gear 51 on fanning strip 5 It is engaged with gear 52, therefore the rotation axis 46 being fixedly connected with gear 52 is pacified also with rotation by bi-bellow differential pressure gauge When dress, rotation axis 46 can be connected with the pointer of bi-bellow differential pressure gauge, so that indicators turn be made to show differential pressure value；And differential pressure passes through The transmitting for crossing arc panel 22, connecting plate 23, rotor plate 53 and fanning strip 5, differential pressure is exaggerated, to make throw of pointer Angle it is bigger, convenient for record experimental result, make record experimental result it is more accurate.

As shown in figure 5, whirlpool spring 47 is equipped at the center of fixed disk 41, the center of whirlpool spring 47 and the center weight of rotation axis 46 It closes, and whirlpool spring 47 be in the one end at center and is fixedly connected with rotation axis 46, the outer end of whirlpool spring 47 is fixedly connected with block 471, keeps off Block 471 is fixedly connected on the surface of fixed disk 41；It when rotation axis 46 rotates, can exert a force to whirlpool spring 47, whirlpool spring 47 is made to store power, When rotation axis 46 resets, the strength of the release savings of whirlpool spring 47 can be improved the speed of the reset of rotation axis 46.

As shown in Figure 5 and Figure 6, fanning strip 5 is equipped with baffle 7 far from the side of fixed disk 41, and baffle 7 is close to fixed disk 41 Side is set there are two sleeve 71, and the side wall fitting of one end of two sleeves 71 and baffle 7, the other end point of two sleeves 71 The fitting of the surface of other and fixed disk 41 and rotor plate 53；There are two screws 72, screw 72 to pass through 71 He of sleeve for grafting on baffle 7 Fixed disk 41 and rotor plate 53 are threadedly coupled；The upper end of rotation axis 46 passes through baffle 7, and rotation axis 46 can rotate；It is fan-shaped The through-hole 54 of ellipse is offered on plate 5；Sleeve 71 close to round bar 6 passes through through-hole 54；Baffle 7 passes through screw 72 and sleeve 71 Cooperation is fixed on fixed disk 41 and rotor plate 53, and the upper end of round bar 6 is fixedly connected with baffle 7, and round bar 6 is fanning strip 5 And the central axis that rotor plate 53 rotates, so round bar 6 will receive biggish power, if the one end of round bar 6 far from rotor plate 53 There is no limit then after overlong time, round bar 6 is easy to happen inclination, influences the rotation of fanning strip 5 and rotor plate 53,7 energy of baffle It is enough that one end of the separate rotor plate 53 of round bar 6 is defined, 6 run-off the straight of round bar is prevented, fanning strip 5 and rotor plate 53 are made Movement be unaffected；It is interfered when through-hole 54 on fanning strip 5 can prevent fanning strip 5 from rotating with sleeve 71, and The angle that sleeve 71 can also rotate fanning strip 5 is defined, and prevents rack gear 51 and gear 52 on fanning strip 5 from separating.

As shown in figure 5, pedestal 1 is fixedly connected on the side wall of fixed disk 41, there are two the symmetrical convex blocks 12 that this is, and Two convex blocks 12 are located at the both ends of 1 length direction of pedestal, gag lever post 13 are threaded on convex block 12, gag lever post 13 is far from pedestal 1 one end is close to balance plate 2 and discord balance plate 2 contacts, and gag lever post 13 is fixedly connected with disk 14 close to one end of balance plate 2； If pressure difference is excessive, the inclined angle of balance plate 2 will be very big, and the inclined angle of balance plate 2 is excessive, will fanning strip 5 with And the angle that rotor plate 53 rotates is excessive, but fanning strip 5 and 53 rotational angle of rotor plate have the upper limit, then balance plate 2 inclines When rake angle is excessive, it is easy to cause the damage of fanning strip 5 and rotor plate 53；Gag lever post 13 can rotate centainly in balance plate 2 2 lower surface of balance plate is abutted after angle, limits the angle that balance plate 2 rotates, therefore fanning strip 5 and rotation can be prevented The damage of plate 53；And disk 14 can increase the area that gag lever post 13 and balance plate 2 contact, and then reduce what balance plate 2 was subject to Pressure prevents gag lever post 13 from damaging to balance plate 2.

As shown in figure 3, being fixedly connected on balance plate 2 and pedestal 1 among two bellowss 3 surface close to each other There is link block 8, elastic plate 81, the side wall fitting of the side wall and link block 8 of elastic plate 81, elasticity are equipped between two link blocks 8 Plate 81 is set far from the side of link block 8 there are two fixed plate 82, and fixed plate 82 respectively corresponds two link blocks 8, fixed plate 82 It is fitted on elastic plate 81, there are two the second bolts 83, the second bolt 83 to pass through elastic plate 81 for equal grafting in each fixed plate 82 It is threadedly coupled with link block 8；Because can enter gas in two bellowss 3, the gas of entrance will lead to the stretching, extension of bellows 3, Therefore balance plate 2 can rise, the rising of balance plate 2 just will drive the movement of arc panel 22, and then rotor plate 53 and fanning strip 5 is caused to be transported Dynamic, so rotation axis 46 also can rotate, even if pressure difference is not present, only gas, which enters bellows 3, will lead to the fortune of balance plate 2 Dynamic, then the pointer of differential pressure indicator just can rotate, to obtain the result of mistake；Elastic plate 81 can carry out the movement of balance plate 2 It limits, and elastic plate 81 has elasticity, can be bent, therefore elastic plate 81 is merely able to balance plate 2 with 81 center line of elastic plate Run-off the straight can prevent the damage of rotor plate 53 and fanning strip 5 without rising.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (9)

1. a kind of bi-bellow differential pressure gauge, including differential pressure watch case (9) and the internal component being set in differential pressure watch case (9) (10), it is characterised in that: internal component (10) include pedestal (1), be set to pedestal (1) above balance plate (2) and be set to bottom Two bellowss (3) between seat (1) and balance plate (2), two bellowss (3) are symmetrical arranged and are located at pedestal (1) length side To both ends；

The upper and lower ends of bellows (3) are fixedly connected with pedestal (1) and balance plate (2) respectively；Pedestal is also fixedly connected on (1) There are two air inlet pipe (34), and air inlet pipe (34) and bellows (3) communicate；Amplifier module (4) are additionally provided on pedestal (1)；

Amplifier module (4) includes the fixed disk (41) on pedestal (1) and the rotation axis (46) with fixed disk (41) grafting, And rotation axis (46) is located at the center of fixed disk (41), rotation axis (46) can turn on fixed disk (41) along its center line It is dynamic；

Fixed disk (41) is fixedly connected with rectangular slab (42) far from the side of balance plate (2)；

The top of fixed disk (41) is equipped with fanning strip (5), and fanning strip (5) is fixedly connected with rotor plate close to the one end of pedestal (1) (53)；

There is vertical arc panel (22) bolt on the side wall of balance plate (2) one end, the one end of arc panel (22) far from balance plate (2) It is hinged with connecting plate (23), one end and rotor plate (53) far from arc panel (22) of connecting plate (23) are hinged；

It is fixedly connected on the periphery of fanning strip (5) rack gear (51), is fixedly connected in rotation axis (46) and is nibbled with rack gear (51) The gear (52) of conjunction.

2. bi-bellow differential pressure gauge according to claim 1, it is characterised in that: rectangular slab is fixedly connected with round bar on (42) (6), round bar (6) passes through rotor plate (53) straight up, is fixedly connected with that there are two baffle ring (32), and two gears on round bar (6) Ring (32) is fitted in respectively on two surfaces of rotor plate (53).

3. bi-bellow differential pressure gauge according to claim 1, it is characterised in that: the pedestal (1) is close to fixed disk (41) Side wall on be fixedly connected there are two symmetrically arranged convex block (12), be threadedly coupled on convex block (12) there are two gag lever post (13), The upper end of gag lever post (13) is arranged close to balance plate (2) lower surface but the following table face contact of discord balance plate (2).

4. bi-bellow differential pressure gauge according to claim 3, it is characterised in that: the upper end of the gag lever post (13) is fixed to be connected It is connected to disk (14).

5. bi-bellow differential pressure gauge according to claim 1, it is characterised in that: the bottom between described two bellowss (3) Seat (1) upper surface and balance plate (2) lower surface are fixedly connected to link block (8), and elasticity is equipped between two link blocks (8) Plate (81), the upper and lower ends of elastic plate (81) are detachably connected with two link blocks (8) respectively.

6. bi-bellow differential pressure gauge according to claim 5, it is characterised in that: the elastic plate (81) is far from link block (8) side is set there are two fixed plate (82), and there are two the second bolt (83), the second bolts for uniform grafting in fixed plate (82) (83) elastic plate (81) are passed through and link block (8) is threadedly coupled.

7. bi-bellow differential pressure gauge according to claim 1, it is characterised in that: be socketed with whirlpool spring on the rotation axis (46) (47), one end that whirlpool spring (47) is in the center of circle is fixedly connected with rotation axis (46), and the other end of whirlpool spring (47) is fixedly connected with Block (471), and block (471) is fixedly connected on fixed disk (41).

8. bi-bellow differential pressure gauge according to claim 1, it is characterised in that: be fixedly connected on the pedestal (1) perpendicular Plate (11), opens up that there are two symmetrical arcuate socket (43) in fixed disk (41)；

It is plugged with the first bolt (44) in arcuate socket (43), the lower end of the first bolt (44) and connecting plate (23) are threadedly coupled；

The fixture nut (45) (33) being fitted on fixed disk (41) surface is threaded on first bolt (44).

9. bi-bellow differential pressure gauge according to claim 8, it is characterised in that: the fixed disk (41) is far from riser (11) Side be equipped with baffle (7), set between baffle (7) and fixed disk (41) there are two sleeve (71), one end of two sleeves (71) It is fitted in the lower surface of baffle (7), the other end of two sleeves (71) is fitted in fixed disk (41) and rotor plate respectively (53) on surface；

Grafting is there are two screw (72) on baffle (7), and screw (72) passes through sleeve (71) and fixed disk (41) surface is threadedly coupled； Round bar (6) upper end is fixedly connected with baffle (7).