CN1558205A - Rheometer without power supply - Google Patents

Abstract

The invention relates to a rheometer without power supply, which is an important instrument for scientific research on fluid flow and deformation, and is a precise, complex and expensive instrument. It is not suitable for testing the rheological parameters of fluids in industrial production and concrete engineering. The measurement principle of the rheometer used in ordinary laboratories is: use a motor to rotate a stirrer, stir the fluid under test, measure the stirring torque and rotation speed, and calculate the rheological parameters of the fluid under test. The commonly used rheometer is hydraulic transmission, and the rotational torque is measured with a pressure gauge. Since the rotational torque cannot be kept constant, the parameters tested by the rheometer are imprecise. In the rheometer of the present invention, the fluid to be measured is installed in the gap between the two barrels, the inner barrel is fixed, and the outer barrel is rotated by a constant torque generated by the gravity of the weight, and the rotation speed is measured with a stopwatch to obtain accurate rheological parameters. Simple, no power supply, high measurement accuracy.

Description

The non-transformer flow graph

Affiliated technical field

The present invention relates to a kind of instrument of test fluid flow, particularly a kind of non-transformer flow graph that is applicable to commercial production, concrete works, test fluid flow rheological

Background technology

Flow graph is that the research fluid flows and the important scientific instrument that are out of shape (being rheology).The flow graph that scientific research is used is accurate, complicated, the higher instrument of price, is not suitable for the test of factory and the sex change of engineering fluid flow.The flow graph measuring principle that common lab is used is: rotate a stirrer with motor, stir tested fluid, measure mixing torque and velocity of rotation, calculate the rheological parameter of detected fluid.Flow graph commonly used is hydrostatic transmission, uses the gauge measurement rotating torque.The method of this dynamometry square is not accurate enough, and rotating torque can not remain unchanged, and therefore the parameter of this rheometer test is coarse.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structure, measuring accuracy is high, is applicable to the non-transformer flow graph of commercial production, concrete works and lab investigation fluid rheology.

The technical solution adopted in the present invention is: welding one horizontal steel plate 6 above the vertical support frame 1, steel plate 6 centers dress bearing 16, pack into bearing 16 the axle 15 upper ends disk 7 is arranged, lower end dress reel 5, there is square groove at the center of disk 7, there is square convex shoulder at circular outer barrel bottom center, can insert the groove of disk 7, enforcement is slidingly connected, and is porose on the feather edge of outer bucket 9, can insert pin 8, in the time of in the hole on the pin 8 lower ends insertion steel plate, outer bucket is fixed, and can not rotate, bucket 10 in the inverted circle of packing in the outer bucket 9, there is female screw in interior barrel 10 bottom centre, cantilever support part 13 and horizontal steel plate welding, supporting member 13 has female screw, and interior bucket 10 is connected with supporting member 13 usefulness screws 12, interior bucket 10 is concentric with outer barrel 9, the detected fluid of packing between two barrels, an end of reel 5 static lines 3, the other end of rope 3 is connected with counterweight 2 by leading block 4.

Test process: rotate outer bucket with hand, the reel lay winding wire ropes, the upper end of the referred support of counterweight, pin passes the hole of outer barrel edge and inserts in the hole of steel plate, pin outer bucket, detected fluid is packed between two barrels, extract pin, external barrel of moment that rotates of counterweight gravitate is rotated outer bucket, detecting counterweight with stopwatch falls the omnidistance required time, calculate outer bucket rotational angular and rotating torque, can be accurate to 0.1 second with manual time-keeping, counterweight is subjected to gravity to produce constant moment, therefore the present invention has simple in structure, without power supply, the measuring accuracy height can satisfy the test of factory and the sex change of engineering fluid flow.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a main cut-open view of the present invention.

Fig. 2 support, steel plate, support structure synoptic diagram.

Bucket longitudinal diagram in Fig. 3.

The outer bucket of Fig. 4 longitudinal diagram

Fig. 5 is the front view of Fig. 1 axis.

Fig. 6 is an A-A sectional view among Fig. 4.

The front view of Fig. 7 screw.

1. supports among the figure, 2. counterweight, 3. wire rope, 4. pulley, 5. reel, 6. steel plate, 7. disk, 8. pin, 9. outer bucket, 10. in bucket 11. nuts, 12. screws, 13. supporting members, 14. nuts, 15., 16. bearings

Embodiment

In Fig. 1 Fig. 2, four vertical steel tube supports (1) upper end weld horizontal steel plate (6), bearing (16) is equipped with at the center of steel plate (6), there is disk (7) interior axle (15) Fig. 5 upper end of the bearing (16) of packing into, lower end dress reel (5), there is square groove at the center of disk (7), there is square convex shoulder Fig. 4 Fig. 6 in the bottom centre of the outer bucket of steel circle (9), can insert in the square groove of disk (7), enforcement is slidingly connected, the larger skirt edge is arranged at the bottom of outer bucket (9), can make handwheel and rotate outer bucket (9), porose on the outer barrel edge, insert pin (8) in the hole, in the time of in the hole on the lower end insertion steel plate (6) of pin (8), outer bucket (9) can not be rotated, barrel (10) Fig. 3 in the inversion of the interior dress of outer bucket (9) steel is circular, there is female screw at interior bucket (a 10) base plate center, cantilever support part (13) and steel plate (6) welding, supporting member has female screw on (13), screw (12) Fig. 7 upper end is screwed into supporting member (13), there is nut (14) fastening, the lower end is connected with interior bucket (10) base plate, and nut (11) is fastening, and outer bucket (9) is concentric with interior bucket (10), can rotate around interior bucket (10), the detected fluid of between inside and outside bucket, packing into, reel (5) is an end of wire rope (3) fixedly, and the other end of restrict (3) is connected with counterweight (2) through pulley (4).

Claims (1)

1. The present invention relates to a rheometer, characterized in that: a horizontal steel plate 6 is welded on the vertical support 1, a bearing 16 is installed at the center of the steel plate, a disc 7 is arranged at the upper end of the shaft 15 loaded into the bearing 16, and a winding wheel is installed at the lower end 5. There is a square groove in the center of the disc 7, and there is a square shoulder in the center of the bottom of the circular outer barrel, which can be inserted into the groove of the disc 7 to implement a sliding connection. There is a hole on the bottom edge of the outer barrel 9, which can be inserted into the pin 8 , the outer barrel 9 is loaded with an inverted circular inner barrel 10, the bottom center of the inner barrel 10 has a female thread, the cantilever support 13 is welded with a horizontal steel plate, the support 13 has a female thread, the inner barrel 10 and the support 13 are connected by a screw 12, and the inner barrel 10 It is concentric with the outer barrel 9, the fluid to be tested is filled between the two barrels, one end of the rope 3 is fixed by the winding wheel 5, and the other end of the rope 3 is connected with the weight 2 through the guide pulley 4.

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