CN208688588U - A kind of rotor assembly of graphite blade flowmeter - Google Patents

Abstract

The utility model discloses a kind of rotor assembly of graphite blade flowmeter, cylindrical core and a pair of of blade member including cylindrical shape, cylindrical core, including the through-hole being arranged along its central axes, interference fit has shaft in through-hole, shaft is equipped with two groups of perpendicular to one another and disjoint perforation, and cylindrical core respectively offers the notch of a rectangle at two mutually perpendicular both ends diametrically；Blade member, including quantity and the consistent connecting rod arranged in parallel of every group of the number of holes, connecting rod two end is connected separately with the graphite scraper plate of one piece of rectangular plate-like, and the graphite scraper plate can be free to slide in the notch；All graphite scraper plates are equipped with the thrust slot of recess in face of the side of fluid impact, and the thrust slot setting face on two graphite scraper plates of every piece of blade member is opposite.The rotor assembly of the graphite blade flowmeter goes slick, and the wearability of contact site is good, compact-sized, stable and reliable.

Description

A kind of rotor assembly of graphite blade flowmeter

Technical field

The utility model belongs to the rotor portions on blade flowmeter technical field more particularly to a kind of graphite blade flowmeter Part.

Background technique

Blade flowmeter is a kind of higher volumetric flowmeter of measuring accuracy, at present using it is relatively broad be using convex The metal scrape plate flow meter of wheel construction, but metal scrape plate flow meter measuring accuracy and stability are not so good as the essence of graphite blade flowmeter Degree is high, and graphite scraper plate is increasingly welcome by market due to its high-precision and high stability at present, as graphite scraper plate flow The rotor assembly of one of the core component of meter plays the important and pivotal role to the measuring accuracy of entire flowmeter, and current Graphite blade flowmeter rotor structure it is also unstable, flexibility and reliability is bad, and abrasion is big when rotating in measuring room cavity, It is easy to appear clamping stagnation.

Utility model content

Utility model aims to solve above-mentioned technical problems, provide a kind of rotor set of graphite blade flowmeter The rotor assembly of part, the graphite blade flowmeter goes slick, and the wearability of contact site is good, compact-sized, reliable and stable.

The technical solution of the utility model is as follows:

A kind of rotor assembly of graphite blade flowmeter, cylindrical core and a pair of of blade member including cylindrical shape, This is in be set in cylindrical core cross-shapedly, and each piece of blade member can be in cylindrical core along circle to blade member Column core radially slides；

Cylindrical core, including the through-hole being arranged along its central axes, interference fit has shaft in through-hole, and shaft is equipped with two groups Perpendicular to one another and disjoint perforation, cylindrical core respectively offer one at two mutually perpendicular both ends diametrically The notch of rectangle, the length direction two sides of the notch extend through the upper and lower end face of cylindrical core；

Blade member, including quantity and the consistent connecting rod arranged in parallel of every group of the number of holes, connecting rod two end difference It is connected with the graphite scraper plate of one piece of rectangular plate-like, the graphite scraper plate can be free to slide in the notch；All graphite scraper plates The thrust slot of recess is equipped in face of the side of fluid impact, face is arranged in the thrust slot on two graphite scraper plates of every piece of blade member On the contrary；

All connecting rods of every piece of blade member axially displaceably correspond in one group of perforation being matched therewith, with So that two pairs of blade members in be set in cylindrical core cross-shapedly and every piece of blade member can in cylindrical core edge Cylindrical core radially slides.

Further, mode is connected and fixed between the graphite scraper plate and connecting rod are as follows: width of the connecting rod along graphite scraper plate Direction is inserted through thrust slot, and the positioning ring end face that graphite scraper plate is arranged on the side of shaft and connecting rod connects, described to push away It is also fixedly inserted with locking pin on connecting rod in power slot, between the inner wall of the locking pin and thrust slot by positioning ring side The holddown spring that be locked pin and thrust slot inner wall press also is cased on connecting rod, so that graphite scraper plate is fixed on interlinking lever end.

Further, a loop graphite shaft is equipped in the cylindrical core at the both ends of each perforation of the shaft It holds, the loop graphite bearing is screwed in cylindrical core and is coaxially disposed with perforation, and the inner hole of loop graphite bearing is for connecting rod Along axially free sliding.

Further, it is screwed with locking nut and adjusting nut by the part of the graphite scraper plate in connecting rod at least one end, institute The wherein one end for stating adjusting nut, which connects away from a side end face of graphite scraper plate with the positioning ring and generates to graphite scraper plate, to be squeezed Pressure and realizing adjusts graphite scraper plate in the function of interlinking lever end installation site, the locking nut and adjusting nut close proximity with Realization is locked to adjusting nut and graphite scraper plate.

The utility model has the beneficial effects that rotor assembly documented by the utility model is being packed into graphite blade flowmeter After in measuring room cavity, due to connecting rod can in cylindrical core along the radial slippage of cylindrical core, in measuring room into After entering fluid media (medium) to be batched, under fluid impact to the impetus of graphite scraper plate, rotor assembly is started turning, and is cooperated Corresponding measuring room internal chamber wall, correspondingly realizes radial slippage, so that keeping always with cavity wall of cavity wall during rotation Good contact, graphite is smooth and wearability is good, can guarantee that its permanently effective between measuring room cavity inner wall contacts, connecting rod ten Font is staggeredly arranged, compact-sized and flexibility is good, it is often more important that the design of rotor thrust slot, increasing action is in blade member Thrust, especially using waist hole type as shown in drawings groove design when, can more fully utilize fluid thrust, more preferably Ground makes graphite scraper plate and the curve of measuring room cavity inner wall fit together, and guarantees measuring accuracy.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

Fig. 2 is the structural schematic diagram after two blade members and cylindrical core fractionation.

Fig. 3 is the top view of the utility model.

Fig. 4 is A-A cross-sectional view in Fig. 3.

Fig. 5 is that the utility model is mounted on a kind of indoor cross-sectional view of metering.

Component label instructions: cylindrical core 18, shaft 21, connecting rod 22, graphite scraper plate 23, locking pin 24, holddown spring 25, Thrust slot 26, loop graphite bearing 27, positioning ring 28, adjusting nut 29, rectangular notch 1801.

Specific embodiment

The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.

The utility model is described in further detail with reference to the accompanying drawings and examples:

As shown in Fig. 1-4, a kind of rotor assembly of graphite blade flowmeter, the cylindrical core 18 including cylindrical shape With a pair of of blade member, this is in be set in cylindrical core 18 cross-shapedly, and each piece of blade member is equal to blade member It can be radially slided in cylindrical core 18 along cylindrical core 18.

As shown in Fig. 1-2, cylindrical core 18 includes the through-hole along the setting of its central axes, and interference fit has shaft in through-hole 21, shaft 21 is equipped with two groups of perpendicular to one another and disjoint perforation, and cylindrical core 18 is mutually perpendicular diametrically at two Both ends at respectively offer the notch of a rectangle, the length direction two sides of the notch extend through the upper of cylindrical core 18 Lower end surface, so that weight can be mitigated significantly to enhance the service life of bearing using design empty in outer reality.

As shown in Fig. 2-3, blade member includes quantity and the consistent connecting rod arranged in parallel of every group of the number of holes 22,22 both ends of connecting rod are connected separately with the graphite scraper plate 23 of one piece of rectangular plate-like, and the graphite scraper plate 23 can be in the notch It is free to slide；All graphite scraper plates 23 are equipped with the thrust slot 26 of recess in face of the side of fluid impact, every piece of blade member Face is arranged on the contrary, the thrust slot 26 is preferably stretched under the cooperation of rectangular notch 1801 in thrust slot 26 on two graphite scraper plates 23 Out cylindrical core 18 and cater to the impact of fluid so that when scraper component rotates more reliably between metering chamber interior walls effectively Contact promotes measuring accuracy.

All connecting rods 22 of every piece of blade member axially displaceably correspond in one group of perforation being matched therewith, So that two pairs of blade members are in being set to cross-shapedly, cylindrical core 18 is interior and every piece of blade member can be in cylindrical core It is radially slided in 18 along cylindrical core 18.

After the rotor assembly that the present embodiment is recorded is in the measuring room cavity for being packed into graphite blade flowmeter, Fig. 5 is this turn A kind of use state diagram of sub-component.In conjunction with attached drawing it is found that since connecting rod 22 can be in cylindrical core 18 along cylindrical core The radial slippage of body 18, therefore, after entering fluid media (medium) to be batched in measuring room, in fluid impact to graphite scraper plate 23 Under impetus, rotor assembly is started turning, and cooperates corresponding measuring room internal chamber wall, correspondingly realizes radial slippage, so that It obtains and is well contacted with cavity wall of cavity wall holding always during rotation, graphite is smooth and wearability is good, can guarantee itself and metering Permanently effective contact between the cavity inner wall of room, 22 cross of connecting rod are staggeredly arranged, compact-sized and flexibility is good, prior It is the design of rotor thrust slot 26, increasing action is in the thrust of blade member, especially using waist hole type as shown in drawings When groove design, fluid thrust can be more fully utilized, the curve of graphite scraper plate 23 Yu measuring room cavity inner wall is preferably made It fits together, guarantees measuring accuracy.

Further, mode is connected and fixed between the graphite scraper plate 23 and connecting rod 22 are as follows: connecting rod 22 is along graphite scraper plate 23 width direction is inserted through thrust slot 26, the positioning ring that graphite scraper plate 23 is arranged on the side of shaft 21 and connecting rod 22 28 end faces connect, and are also fixedly inserted with locking pin 24 on the connecting rod 22 in the thrust slot 26, in the locking pin 24 and thrust Slot 26 is also cased with the pressure that be locked pin 24 and 26 inner wall of thrust slot press on the connecting rod 22 between the inner wall of 28 side of positioning ring Tight spring 25, so that graphite scraper plate 23 is fixed on 22 end of connecting rod, locking pin 24 cooperates with spring installs scraper plate with holding out against On connecting rod 22, want firm for general direct interference fit is fixed, this is because the material characteristic of graphite itself Unsuitable metal material using interference fit, is consolidated graphite scraper plate 23 in such a way that this locking spring is axially held out against like that It is scheduled on connecting rod 22 and efficiently avoids this problem, and convenient for assembly and disassembly maintenance.

Further, a loop stone is equipped in the cylindrical core 18 at the both ends of each perforation of the shaft 21 Black bearing 27, the loop graphite bearing 27 are screwed in cylindrical core 18 and are coaxially disposed with perforation, loop graphite bearing 27 For connecting rod 22 along axially free sliding, additional loop graphite bearing 27 is arranged can reduce for cylindrical core 18 inner hole Material requires and requirement on machining accuracy, when production, need to only consider that the material of loop graphite bearing 27 and machining accuracy are i.e. certifiable The flexibility and reliability that slides axially of connecting rod 22, to guarantee the working performance of blade member, and most important purpose is to borrow stone The lubrication and leakproofness of black bearing, so that the interspersed cooperation between connecting rod 22 and cylindrical core 18 will not be because (medium is in stone for leakage Flowing is permeated in the area of space encircled a city between black scraper plate 23 and metering chamber interior walls) and influence measuring accuracy.

Further, locking nut and adjusting nut are screwed with by the part of the graphite scraper plate 23 in at least one end of connecting rod 22 29, wherein one end of the adjusting nut connects away from a side end face of graphite scraper plate 23 with the positioning ring 28 and scrapes to graphite The generation of plate 23 squeezes and realizes and adjust graphite scraper plate 23 in the function of 22 end installation site of connecting rod, the locking nut and adjusting 29 close proximity of nut is to realize being locked to adjusting nut 29 and graphite scraper plate 23.The structure design primarily to It is needing to be the adjusting for carrying out entire scraper component length direction, is adjusting graphite scraper component by adjusting this to nut Length achievees the purpose that the gap for adjusting graphite scraper plate and shell inner cavity, to guarantee measuring accuracy.

The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.

Claims (4)

1. a kind of rotor assembly of graphite blade flowmeter, it is characterised in that: cylindrical core and a pair including cylindrical shape Blade member, this is in be set in cylindrical core cross-shapedly, and each piece of blade member can be in cylinder to blade member It is radially slided in core along cylindrical core；

Cylindrical core, including the through-hole being arranged along its central axes, interference fit has shaft in through-hole, and shaft is equipped with two groups each other Vertical and disjoint perforation, cylindrical core respectively offer a rectangle at two mutually perpendicular both ends diametrically Notch, the length direction two sides of the notch extend through the upper and lower end face of cylindrical core；

Blade member, including quantity and the consistent connecting rod arranged in parallel of every group of the number of holes, connecting rod two end is separately connected There is the graphite scraper plate of one piece of rectangular plate-like, the graphite scraper plate can be free to slide in the notch；All graphite scraper plates face The side of fluid impact is equipped with the thrust slot of recess, and face phase is arranged in the thrust slot on two graphite scraper plates of every piece of blade member Instead；

All connecting rods of every piece of blade member axially displaceably correspond in one group of perforation being matched therewith, so that Cylindrical core is interior and every piece of blade member can be in cylindrical core along cylinder in being set to cross-shapedly for two pairs of blade members Core radially slides.

2. the rotor assembly of graphite blade flowmeter according to claim 1, it is characterised in that: the graphite scraper plate and company Mode is connected and fixed between bar are as follows: connecting rod is inserted through thrust slot along the width direction of graphite scraper plate, and graphite scraper plate is by turning The positioning ring end face being arranged on the side of axis and connecting rod connects, and is also fixedly inserted with locking pin on the connecting rod in the thrust slot, Be locked pin and thrust slot inner wall are also cased on connecting rod between the inner wall of the locking pin and thrust slot by positioning ring side The holddown spring pressed, so that graphite scraper plate is fixed on interlinking lever end.

3. the rotor assembly of graphite blade flowmeter according to claim 2, it is characterised in that: in each of described shaft A loop graphite bearing is equipped in cylindrical core at the both ends of perforation, the loop graphite bearing is screwed in cylindrical core And be coaxially disposed with perforation, the inner hole of loop graphite bearing is for connecting rod along axially free sliding.

4. the rotor assembly of graphite blade flowmeter according to claim 3, it is characterised in that: leaned in connecting rod at least one end The part of the graphite scraper plate is screwed with locking nut and adjusting nut, and wherein one end of the adjusting nut and the positioning ring are carried on the back A side end face from graphite scraper plate, which connects and generates to graphite scraper plate, to be squeezed and realizes that adjust graphite scraper plate installs in interlinking lever end The function of position, the locking nut and adjusting nut close proximity are to realize that the locking to adjusting nut and graphite scraper plate is solid It is fixed.