SU1392453A1 - Rotary viscometer - Google Patents

Description

(21) 4060390 / 31-25

(22) 04.24.86

(46) 04/30/88. Bul Number 16

(71) Odessa Technological Institute of Food Industry named after M.Lo Monosov

(72) V.Z. Geller, A.K. Pugach and M.B. Tulchenetsky

(53) 532.137 (088.8)

(56) USSR Copyright Certificate No. 575546, cl. G 01 N 11/14, 1976.

US patent No. 4445365, class. G 01 N 11/14, 1984.

(54) ROTATIONAL VISCOSIMETER

(57) The invention is intended to study the viscosity properties of liquids and pastes, can be used to measure the viscosity of liquid, puree- and paste-like food products at different temperatures and shear gradients. The goal is to improve the measurement accuracy by reducing the influence of the parasitic friction moment in the shaft supports of the inner cylinder. The electric motor is fixed in the suspension, perceiving the axial load of the weight of the electric motor and the elements fixed on it. This allows a radial gas bearing with a low supply air pressure and a low flow rate to be introduced as a support, which reduces the effect of friction in the supports on viscosity measurement. 2 sludge.

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The invention relates to a measurement technique and can be used to determine the rheological characteristics of liquid mashed potatoes and pasty food products.

Figure 1 shows a rotational 1) 1H viscometer, a general view; Fig. 2 shows a torque measurement circuit.

The rotational viscometer contains two COOOIO arranged cylinders; internal 1, driven in rotation and external 2 - motionless. The cylinders are placed in thermostat 3. The outer cylinder 2 is fixed on the main plate 4. The inner ring indr 1 is fastened with a thread with a connection on a flank 5 IKITO pa electroplating 6. Shaft 5 is located in the gas bearing 7. Figure i; -i shaft 5 between r-tsop m 1od 11i1n, -. ivf 7 and electromotor psm 6 installed E1le. and perforated. hgk 8 photoels: strontium tachometer. The disk 8 enters the slot of the photoelectric sensor 9, for

on the ocHornini i plate t. С Г Л-; / the disk disk 8, rotating, generates

the torus of the electric motor 6 is motionless behind the creil in the split hs. muto 10, with the suspension 1 1. At the opposite ends of the clamp 10, there is an installation of a counterweight 12 and a transmitting lever / n 13, the axis of which passes through the l-. the b axis of the electric motor. The emitting lever g 13 rests on the yripyi Hii element 14 of the strain gauge clamped on the tube 15, which is mounted on the rack 16. Underneath: ri 11 free lodsigene lia kaprotktnpy yarn 17, which is fixed and the lyric nnnte 18. lly bag of KpoHurrefiKbi nineteen.

Rotational viscometer growth, -, followed by.

The pipe 15 is moved to the first unit, / I

at the same time, INTEL CYLIT1L, p1Hiiii: kata from t (1 prostat 3. Pythus cm; substance is loaded into the outer lUflindr 2. In thermostat 3, h is formed; the given test temperature. The test item tpms Statusch-h and after This is for Elsk 1 rodstv lgg.CHE 6 -50

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give adjustable control voltage. The electric motor 6 develops revolutions, a braking torque occurs on the inner cylinder 1, which causes a reactive torque on the stator of the electric motor 6. A freely suspended electric motor 6 transfers the force to the elastic element 14 of the strain gauge through the transmitting rod 13. The electric motor suspension, perceiving the axial load of the electric motor weight and the elements attached to it, allows the radial gas head to be inserted as a support for the shaft of the inner cylinder and thus reduces the parasitic friction torque several hundred times, since the air pressure in n; viinikniki 4 atm and the flow rate of T1velika. According to the known length, ifi, the transverse angle and the magnitude of the force is determined by the moment of resistance on the cylinder 1. Perforator HP, iX (/ TO sensor electrical imiyj4.:M, whose frequency is proportional to hl;: t (1te rotation of the internal pidgpn. Pl.

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A horizontal viscometer containing two coaxially arranged cylinders, o; 1in of which is stationary, and the other railway is fixed on the motor shaft, the stator of which is fixed in -gro; 1 of fixing and torque, a body with a thermosp atom, attached to a rnGy, ae, ay, and ai and Ii with yy-n. th, with pon1,11: | 1. exactly C &11; cf (ray we decrease the influence of parts h-1G, -1-, ii of the friction monoton in the supports -, i, ii 1 of the inner h1n, iJindra and save-; 1l g (m) of hyosch and mL4HH.upoB, the stator electr (|; 1 nigatyl fixedly mounted in the opposite yoke collar, connection 1 OP 1 with a suspension, I n (1b ()), P o to the rack, 1i, the morning. the second ts.chindra raskjjiji.t .oii jb) UH.-, ibHoM G ayum g1OD1mpmnn; n |.

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Claims (1)

Claim A rotational viscometer containing two coaxially arranged cylinders, one of which is stationary and the other is rigidly fixed to the motor shaft, the stator of which is fixed in a torque fixing device, a housing with a thermostat, attached to the furnace, and the heater. and th with I'm heme. that, with the aim of increasing the accuracy of the inept-piya by reducing the influence of the chag. μ of the inner cylinder and maintaining radial gas bearing. I 3 924 53/6 15 Id Fi g. 1