CN2459628Y - Magnetic coupling indication type bidirection warning flow switch - Google Patents

Abstract

The utility model relates to a magnetic coupling indication type bidirection warning flow switch, particularly the technical field of indicating instruments of the measurement of magnetic coupling flow quantity. The utility model is characterized in that the positions of horizontal inlets of T-shaped three-way pipe bodies are provided with baffle plates; the middle parts of the baffle plates are sheathed with driving magnet steel in a cylindrical shape; the driving magnet steel is coupled with driven magnetic steel which is installed in sealing output assemblies which are vertically arranged; the driven magnetic steel is sheathed on central shafts which are provided with gears; the gears are meshed with a central gear which is provided with fingers. Therefore, the flow quantity which passes through the baffle plates is transmitted to the fingers, and corresponding positions are provided with sealing rings. The utility model can provide indication and alarm and has the advantages of good sealing properties, little limit of installing positions, and stable and reliable operation. The utility model is the product having developing value in the field.

Description

Magnetic coupling indicator type bidirectional alarming flow switch

Magnetic coupling indicator type bidirectional alarming flow switch belongs to the flow measurement technology category, promptly relates to have magnetic-coupled flow measurement and index instrument structure designing technique.

As everyone knows, in metallurgy, electric power, petrochemical industry and other mechanical industry, in order to ensure the safe reliability of system, need the flow of the cooling in the mechanical hook-up, lubricating system is measured and reported to the police.At present, the normal flow switch that uses has relative merits separately: unidirectional (as lower limit) warning function is only arranged, signal is arranged but do not have indication; Or have a little less than indication and warning function, the signal, blow-by has leakage; Or can only level or vertically installation, unidirectional warning.According to the information that the inventor provides, still there is the defective of leakage in the bidirectional alarming flow switch of domestic employed a kind of external product at present.Know with regard to the applicant, it is public for society still not to have at present identical therewith technique device, does not also have therewith phase technical scheme roughly the same file an application or be announced to Patent Office of the People's Republic of China.

The design the purpose of this utility model is: for the flow measurement technology field provides a kind of bidirectional alarming that has, the installation site is unrestricted, the magnetic coupling indicator type bidirectional alarming flow switch of mechanical shaft good airproof performance.

The application's project technical scheme required for protection is as follows:

1. at the place, horizontal input port of flange T type threeway body (1) plate washer that has pan (14) that is square is housed, cylindrical active magnet steel (13) is housed in the middle; Middle and lower part at the central shaft (24) of the sealing output shaft assembly (10) that is arranged perpendicular is set with the passive magnet steel of annular (12), its central horizontal cross section and cylindrical active magnetic molten steel plane section overlaid; Passive magnetic steel sleeve is contained on the central shaft, and the latter's upper end is equipped with gear (21); It is meshed with central gear (7), and central gear is configured on the central shaft of meter dial; Pointer (3) is equipped with on top at the central shaft of central gear, in addition report to the police pointer (4) coaxial mounted with it, (5) and adjust button (6).

2. square plate washer (14) is serially connected between installing plate (15) and the loam cake (9) by threaded axle, is serially connected with back-moving spring (17) in its pan, and it is a helical torsion spring; Plate washer axle (18) is installed in the pan.

3. in the lower end of the vertical port of flange T type threeway body, the below of sealing output shaft assembly and plate washer disposes circular mounting plate (15); Above the vertical port of flange T type threeway body, be inlaid with disc type loam cake (9); Between it and installing plate, dispose sealing output shaft assembly; Erectting on installing plate has runner plate (19), and its inside surface is two off-centre operation shapes, and it is fixed on the installing plate by screw.

4. it is as follows to seal output shaft assembly included parts and structure thereof; Be set with the central shaft of round long column shape of being of the passive magnet steel of annular in the middle and lower part, central shaft inserts in the bearing (23), is positioned on the axis of sealing output shaft assembly; Its upper end is equipped with gear (21), and the latter's below is set with bearing (23), and the top of bearing is embedded with circular upper cover (22); The top of circular lower sealing cover (20) is inserted in the lower end of central shaft, and the latter's lateral surface is inlaid with the axle ring washer (25) of semicircular ring sheet; Middle part in lower sealing cover is surrounded by " O " shape rubber seal (11); On the upper rounded plane of lower sealing cover, be added with annular gland (26).

5. central gear, pointer, warning pointer have common central shaft.

6. on the vertical port of the flange T type threeway body anchor ring adjacent, be arranged in the circle of the vertical port of flange T type threeway body, be embedded with " O " shape rubber seal (2) with loam cake; Be embedded with " O " shape rubber seal (8) at the sealing output shaft assembly annulus adjacent with loam cake.

7. pointer, warning pointer and central gear are installed in the watchcase (16), and center, watchcase top is equipped with adjusts button (6).

With reference to the accompanying drawings and in conjunction with the embodiments the shape of this device and structure are remake further and describe:

Fig. 1 magnetic coupling indicator type bidirectional alarming flow switch longitudinal cross-section structural representation.

Fig. 2 is the A-A cut-open view of Fig. 1, has only marked the part parts in the vertical port scope of flange T type threeway body among the figure.

Fig. 3 is the B-B cut-open view of Fig. 1, has only marked pointer and warning pointer among the figure.

Fig. 4 seals output shaft modular construction synoptic diagram.

Each parts is defined as follows among the figure: 1---flange T type threeway body, be positioned at the bottom of instrument, and the vertical passage port in top is embedded with loam cake, is the pedestal and the measurement chamber of instrument.2---" O " shape rubber seal, be annular, be positioned at corresponding seal groove, constitute the interference fit of two adjacent elements, reach the purpose of sealing.3---pointer, the needle shape is positioned at the top in the axle center of central gear, with the axle center wringing fit, the function that has indication and stir the moving point of electric contact.4,5---the warning pointer, the needle shape, vertical curve shape is standard component.6---adjust button, two annulars have driving lever on the intermediate shaft, and two annulus are clamped on the axle center, and ring is shaped on external thread and internal thread respectively up and down, to adjust the location status of warning pointer.7---central gear is a kind of miniature gear, is positioned at the center of meter dial, with the press fit of centre bearing hole, transmits the plate washer corner information.8---" O " shape rubber seal is identical with label (2).9---loam cake, disc is positioned at the top of threeway body, is fastened on the threeway body by screw.10---the sealing output precision, it includes passive magnet steel, central shaft, gland, loam cake, bearing, gear, axle ring washer, O-ring seal etc.11---" O " shape rubber seal is identical with label (2).12---passive magnet steel, annular, the middle below of being inserted in central shaft connects with the central shaft rigidity, with the information that information translation is the vertical direction rotation that horizontally rotates of active magnet steel.13---magnet steel initiatively, cylindrical, be positioned at the middle part of plate washer,, carry out magnetic coupling by screw retention thereon with passive magnet steel.14---plate washer, be positioned at the lower right of loam cake, square, have pan, be serially connected between installing plate and the loam cake by threaded axle, be subjected to different flow promotion, form different corners, and and runner plate constitute corresponding circulating face.15---installing plate, circle is positioned at the below of sealing output precision and plate washer, vises sealing output shaft assembly and plate washer jointly also with loam cake, and is screwed.16---watchcase, truncated cone-shaped, last disc is big, and following disc is little, is furnished with double contact switch in the watchcase, and upper surface is equipped with glass and Biao Gai.17---back-moving spring, the helical torsion spring shape is positioned in the middle of the plate washer pan, is serially connected with in the plate washer with axle, when plate washer does not have fluid drag force, draws the commentaries on classics plate washer.18---the plate washer axle, cylindrical, its axis parallels with the axis of sealing output shaft assembly, is arranged in pan, and both are for movingly, and plate washer is the axle center rotation with it.19---runner plate, by the riser that two off-centre operations are formed, xsect is crescent, above installing plate, jointly forms variable circulation area with plate washer by screw retention.20---lower sealing cover, circle is positioned at the lower end of output shaft, with the shell endoporus of output shaft for movingly, form containment member jointly with " O " shape O-ring seal, and the centre of support axle.21---gear, miniature gear is positioned at the upper end of central shaft, and both are that rigidity connects, and transmit corner radian information.22---loam cake, circle is positioned at output shaft top, with the endoporus of output shaft shell movingly, form containment member jointly with " O " shape O-ring seal and output shaft.23---bearing, light-duty rolling bearing is a standard component, two, be assemblied in the upper and lower of central shaft respectively, and with its wringing fit.24---central shaft, the circular elongated axle is with parts such as central gear, lower sealing cover, gear, loam cake, bearing totally one axis.25---axle use ring washer, and the semicircle sheet is positioned at the outside of two bearings, utilizes its elasticity card to push down between bearing and two ring washers, is movingly with adjacent elements, is subjected to spool to retrain with ring washer, makes bearing can not produce axial displacement.Arrow---fluid flow direction.0,50,100---the flow scale value on the index dial.

Making according to such scheme, is an exemplary embodiments of the application's project.

The course of work of magnetic coupling indicator type bidirectional alarming flow switch is as follows: when fluid (is seen accompanying drawing 1) in the direction of arrows and flowed, plate washer (14) is by push-jump, on it fixing active magnet steel influence of magnetic field the passive magnet steel (12) in the sealing output precision (10) with commentaries on classics, vertical center axis passes to central gear (7) and pointer (3) with the corner of plate washer (14) and makes clockwise direction and rotate in the sealing output precision, when pointer (3) goes to and the pointer of reporting to the police (4) when overlapping, (3) upper pillar stand disconnects (4) upper contact, pointer (3) is rotated further with pointer and reports to the police (5) when overlapping, column disconnects warning pointer (5) contact, this moment, pipeline fluid was located into normal discharge (reporting to the police with two lower limits is example) state, when flow continued to increase, column still promoted the dextrorotation of the moving point of two contacts until reaching full scale.Break down or normal running when causing fluid flow to descend as pipe system, plate washer (14) is in its back-moving spring pulling turning down, pointer (3) is turned left, when pointer (3) and (5) when overlapping, warning pointer (5) junction closure sends first alerting signal, illustrate that flow reduced to uneasy total head, pointer (3) continue to warning pointer (4) when overlapping, warning pointer (4) upper contact closure, send second alerting signal, it informs that the operator should take immediate steps or signal sent into safety interlock system handle automatically.

This shows that the technical program can combine indication of the instantaneous delivery of flow switch and bidirectional traffics warning together; Utilize 90 ° of intersection magnetic coupling forms to solve the easy leakage problem of flow instrument output shaft effectively; Metering is provided with back-moving spring in the plate washer, so instrument is not subjected to the influence of installation site and setting angle, has changed the disadvantage that similar instrument setting angle influences work stability and reliability even cisco unity malfunction.

Compare with background technology, the beneficial effect that the utlity model has is; The indication of afflux amount and two-way newspaper Alert in one; Instrument can not be subjected to the restriction of installation site; Good seal performance, the work stable and reliable operation. Be Technical scheme that has very much exploitation to be worth in the industry.

Claims (7)

1. a magnetic lotus root is closed indicator type bidirectional alarming flow switch, it comprises flanged tee body, baffle plate, magnet steel, output shaft, pointer, it is characterized in that: the plate washer that has pan (14) that is square is equipped with at the place, horizontal input port at flange T type threeway body (1), and cylindrical active magnet steel (13) is housed in the middle; Middle and lower part at the central shaft (24) of the sealing output shaft assembly (10) that is arranged perpendicular is set with the passive magnet steel of annular (12), its central horizontal cross section and cylindrical active magnetic molten steel plane section overlaid; Passive magnetic steel sleeve is contained on the central shaft, and the latter's upper end is equipped with gear (21); It is meshed with central gear (7), and central gear is configured on the central shaft of meter dial; Pointer (3) is equipped with on top at the central shaft of central gear, in addition report to the police pointer (4) coaxial mounted with it, (5) and adjust button (6).

2. a kind of magnetic coupling indicator type bidirectional alarming flow switch according to claim 1, it is characterized in that square plate washer (14) is serially connected between installing plate (15) and the loam cake (9) by threaded axle, be serially connected with back-moving spring (17) in its pan, it is a helical torsion spring; Plate washer axle (18) is installed in the pan.

3. a kind of magnetic coupling indicator type bidirectional alarming flow switch according to claim 1 is characterized in that in the lower end of the vertical port of flange T type threeway body, and the below of sealing output shaft assembly and plate washer disposes circular mounting plate (15); Above the vertical port of flange T type threeway body, be inlaid with disc type loam cake (9); Between it and installing plate, dispose output seal shaft assembly; Erectting on installing plate has runner plate (19), and its inside surface is two off-centre operation shapes, and it is fixed on the installing plate by screw.

4. a kind of magnetic coupling indicator type bidirectional alarming flow switch according to claim 1, it is as follows to it is characterized in that sealing included parts of output shaft assembly and structure thereof: the central shaft that is set with round long column shape of being of the passive magnet steel of annular in the middle and lower part, central shaft inserts in the bearing (23), is positioned on the axis of sealing output shaft assembly; Its upper end is equipped with gear (21), and the latter's below is set with bearing (23), and the top of bearing is embedded with circular upper cover (22); The top of circular lower sealing cover (20) is inserted in the lower end of central shaft, and the latter's lateral surface is inlaid with the axle ring washer (25) of semicircular ring sheet; Middle part in lower sealing cover is surrounded by " O " shape rubber seal (11); On the upper rounded plane of lower sealing cover, be added with annular gland (26).

5. a kind of magnetic coupling indicator type bidirectional alarming flow switch according to claim 1 is characterized in that central gear, pointer, warning pointer have common central shaft.

6. a kind of magnetic coupling index type bidirectional alarming flow switch according to claim 1, it is characterized in that on the vertical port of the flange T type threeway body anchor ring adjacent with loam cake, be arranged in the circle of the vertical port of flange T type threeway body, be embedded with " O " shape rubber seal (2); Be embedded with " O " shape rubber seal (8) at the sealing output shaft assembly annulus adjacent with loam cake.

7. a kind of magnetic coupling indicator type bidirectional alarming flow switch according to claim 1 is characterized in that pointer, warning pointer and central gear are installed in the watchcase (16), and center, watchcase top is equipped with adjusts button (6).

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