SU1300298A1 - Electrocontact level gauge - Google Patents

Description

The invention relates to instrument making and can be used in feed mixing plants as a level indicator for viscous and sticking materials.

The aim of the invention is to enhance the functionality of the device by ensuring operability in viscous and adhering materials.

FIG. 1 shows the sensor, common iid; in fig. 2 is a view A of FIG. 1} in FIG. 3 is a view of B in FIG. one; figure 4 - electrodes and blades with knife edges.

Inside the case of the electrocontact level sensor there is a drive consisting of two bevel gears 2 and 3, the first of which is the driving gear and the second is known. The drive gear 2 is mounted on the shaft 4, which is connected to the electric motor 5 through the half couplings 6 and 7. The electric motor 5 is attached to the housing 1 on the uprights 8. The shaft 4 of the gear 2 is located in the textolite sleeve 9, which is pressed into the key 10. The shaft 4 with the sleeve 9 form a sliding bearing. The housing 1 is fastened to the wall of the mixer tank 12 with bolts 13 by means of a flange 11. A textolite sleeve 14 is pressed into the flange 11, which, with driven gear 3, forms another sliding bearing. A gear 15 is pressed into gear 3, the hole in which serves as a guide for movable slide 16. On the side of the slide, 16 through the axis 17 is hingedly connected to one end of the rocker arm 18. Sleeve 19 and axis 17 form a slip bag. The other end of the yoke 18 forms with a cylindrical protrusion 20 on the shaft 4 a hinge located with eccentricity e with respect to the axis of gear 2 Thus, the leading gear 2 transmits simultaneously two types of movement from the electric motor 5: rotary to gear 3 and reciprocating to a slide 16 .

At the end of the slide 16, an electrode 21 is installed. The blades 22 are attached to the end of the textolite sleeve 15. The electrode 21 and the blades 22 are located inside the container 12. Inside the slide 16, a hole is made in which the wire 23 is placed, connected to the electrode 21, the stroke length of the electrode 21

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corresponds to the length of the working knife edge 24 of the blade IG 22. To the flange 1 1, the second electrode 25 is mounted coaxially to the movable electrode 21 in the form of a ring.

Each blade 22, in addition to the knife edges 24, has other knife edges 26 along the electrode 25. The blades 22 are insulated from the electrodes 21 and 25, since they are fastened via a textolite ring 27 to a textolite sleeve 15.

To improve the cleaning of the sticking layer at the electrode 21, the knife edges can be made in the form of two sawtooth teeth 28 and 29 (Fig. 4).

The sensor electrodes are connected to a circuit that provides some trigger delay.

The device works as follows.

With the start of the mixer loading, the sensor is turned on. Rotation from. electric motor 5 is transmitted through bevel gears 2 and 3 blades m 22, and (simultaneously) reciprocating movement through a crank-and-crank system, including a rocker 18, a sliding bearing 17 and 19 and a slider 16, is transmitted to the moving electrode 21. Knife edges 24 located along the electrode 21, rotating, they cut off and clean off the sticking particles of the feed material from the 5th genus 21. The electrode 21 itself, moving progressively, pushes the stuck or dried mass. The knife edges 26 cut off and clean the sticking particles of the feed material from the working plane of the electrode ring 25. Cleaning the electrodes 21 and 25 blades 22 occurs when the material level has not reached a predetermined value, and bursts of the feed mixture from the working body of the mixer hit the electrodes.

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When the material reaches the level of both electrodes, the space between them is filled, a conductive layer is formed, and the circuit, which includes the electrodes, closes.

During interruptions in operation, a crust of adhering material may form along the walls of the capacitance-ff of the semi-dry. In this case, the sawtooth protrusions of the knife edges cut the material along the base, and then the material is removed by the movable electrode 21.

31300298

Thus, the proposed sensor allows controlling a given lump of material of the most varied content, including liquid mixtures and various components.

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formula of invention

Claims (2)

1. An electrocontact level sensor, containing two electrodes placed in the capacitance, the first movable one being connected to a reciprocating drive, which is due to the fact that, with the aim of expanding the functionality by viscous and adhesion materials, it is provided with rotating blades connected to the drive, having knife edges and located diametrically with respect to the with The second electrode is made in the form of a ring mounted on the container coaxially with the movable electrode, some blade edges of the blades are located along the movable electrode, and others along the plane of the ring electrode, while the drive is made in the form of an electric motor connected to a crank-connecting rod system equipped with a pair bevel gears with mutually perpendicular axes of rotation, with the leading crank connected to the motor mounted on it connected to the electric motor, and the knowledge to the blades. with 2. Electrocontact level sensor according to claim 1, characterized in that the blade edges of the blades facing the moving electrode have saw-like protrusions. Vida 23 fi. Z In id 5 fie.Z Editor K. Voloshchuk Order 1140/39 Circulation 694 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Compiled by A. Kurochkin Tehred N.Gluschenko Proofreader S.Cherni