SU1603275A1 - Device for determining moisture content of loose materials - Google Patents

Abstract

The invention relates to a measurement technique, in particular, to devices for determining the moisture content of bulk materials. The purpose of the invention is to improve the accuracy of determining the humidity and reduce the power consumption of the device. The device contains a moisture meter with a sensor in the form of a flat condenser, a housing, at the entrance of which a hinged sash is installed, supporting with a rod with a spring. The sensor plates are cleaned from the material with a two-arm plate lever kinematically connected with the stem. The sensor body is adapted to be mounted on the mixing container window. 1 hp f-ly, 3 ill.

Description

The invention relates to a measuring technique and can be used in agricultural production for measuring the moisture content of bulk materials, as well as in the foundry industry for recording the moisture of a molding mixture during the mixing (preparation) process.

The aim of the invention is to improve the accuracy of determining the humidity and reduce the energy intensity of the device. FIG. 1 shows the proposed device, an axial section; in fig. 2 is a view A of FIG. 1, in FIG. 3 a section B-Bna of FIG. one.

The device comprises a housing 1 in which a dielectric insert 2 is installed. The inset has two flat parallel dielectric plates 3 with sensitive elements 4 (FIG. 2), the space between

The plates 3 is the working area filled with the bulk material under test 5.

The housing 1 is rigidly attached to the mixing tank 6, in which the blades 7 are located (the direction of rotation of the blades is shown by arrow B in Fig. 1).

In the p-working area perpendicular to the plane of the plates 3, the flap 8 is mounted rotatably on the hinge 9. The front surface of the flap 8 faces the mixing container window 6. From the rear surface, the flap is supported by the stem 10 with the spring 11 and the adjusting nut 12, the Stem 10 is articulated The structure of the fish 8 by means of a fork cracker 13, placed in the slot groove, made in the shape of a dovetail (Fig. 3). In the part opposite to the working area, the stock

00 ND (U1

has a protrusion 14. On the housing 1, also in the part opposite to the working area, the switching element 15 is fixed. In the mixing container 6 window next to the shutter 8 there is a double-arm plate lever consisting of plates 16 and 17 mounted on a hinge 18 parallel to the hinge 9. Plate 16 is supported by a spring 19 with a spring 20. Th. Ha 19 ends with a knee 21 facing the rod 10. Kinematic connection of the cable 19 with the plate 16 is similar to the connection for the rod

ten

to them material. At the same time, the living cross section of the material under study is reduced (by reducing the bore of the mixing tank), which leads to a decrease in the pressure force of the material on the flap 8. In connection with this, the rod 10 undergoes a return movement (left) under the action of the spring 11 contact with the knee 21 t g 19. The last under the action of the spring 20, returning, causes the clock to rotate the two shoulders lever 16-17. Plate

, - -. is -iriri I u I /. Irjidt. gina

10 CO sash 8 .. Plate 17 reversing, 517 is installed in the original set to the sash 8.tsie, freeing the passage into the working area

The device works as follows: bulk material, and operations

in a way.

Under the influence of rotating the lane through the adjusting nut

7, the granular material 5 flows through -2o12; the value is initially determined through the window of the mixing tank 6 into the working area of the device. From the action of the dynamic pressure of the bulk material 5 on. the flap 8 is last rotated on the hinge 9 clockwise. In this case, the rod 10 moves to the right, overcoming the resistance of the spring 11,

As the stem 10 moves, the material 5 is compacted by backing from the link section 8 - stem 10 - spring 11. At the moment when the protrusion 1 of the stem comes into contact with the switching element 15, the electronic registration unit humidity (not shown). Thus, the moisture measurement is made when the specified bulk density of the material under study is reached. With a further movement of the rod to the right, the protrusion 1 emerges from contact with the switching element 15, and the measurement process ends. At the same time, the rod 10 does not cease to move to the right (Fig. 1), which reaches the knee of 21 G of 19 and pushes it. A ha of 19 tons is not behind a plate of a two-armed lever, while the second lever arm, plate 17, turning around the hinge 18 counterclockwise, removes the material under investigation from the working area, thereby cleans the sensitive elements of the sensor from adhering

Press the spring 11 depending on the granulometric density of the material under study 5, the frequency of rotation of the blades 7, etc.

25

Formula

and 3 o b

rete n i

35

Claims (2)

1. Device for determining moisture. bulk materials containing. 3Q moisture meter with a sensor in the form of a flat capacitor, characterized in that, in order to improve the accuracy of determining and reducing energy intensity, it contains a body, a hinged flap, a second hinge, a rod with a spring and an adjusting nut, a switching element, a lamellar double-arm lever and a spring with a spring, with the Shtvr installed between the plates of the flat capacitor rotatably on the hinge and in contact with the rod, the plate double-arm lever is fixed on the second hinge parallel to g5 hinge of the leaf; and one of the plates of the lever is kinematically connected to the rod through the tube with the spring. i 40 50 2. The device according to claim 1, about tl and often because the stem with the sash and the stem with the lever are articulated with the help of a fork cracked in a groove made in the shape of a dovetail. to them material. At the same time, the living cross section of the material under study is reduced (by reducing the bore of the mixing tank), which leads to a decrease in the pressure force of the material on the flap 8. In connection with this, the rod 10 undergoes a return movement (left) under the action of the spring 11 contact with the knee 21 t g 19. After the action of the spring 20, returning, causes the two shoulders lever 16-17 to rotate clockwise. Plate -. is -iriri I u I /. Irjidt. gina 17 is established in the original positezie, freeing the passage into the working area Press the spring 11 depending on the granulometric density of the material under study 5, the frequency of rotation of the blades 7, etc. 25 Formula and 3 o b rete n i 1. Device for determining the moisture content of bulk materials. a moisture meter with a sensor in the form of a flat capacitor, characterized in that, in order to improve the accuracy of determining and reducing energy intensity, it contains a body, a hinge flap, a second hinge, a rod with a spring and an adjusting nut, a switching element, a lamellar double-arm lever and a spring with a spring, with the ShT-piece mounted between the plates of the flat capacitor rotatably on the hinge and in contact with the rod, the plate double-arm lever is fixed on the second hinge parallel to the hinge of the leaf, and one of the plates of the lever is kinematically connected with the rod through the bar with the spring. i 2. The device according to claim 1, about tl and often because the stem with the sash and the stem with the lever are articulated with the help of a fork cracked in a groove made in the shape of a dovetail. 119 20 Phi.1 In id FIG. 2 Compiler A.Popov M.Tsitkina Editor,. Tehred M. Khodanich Proofreader S. Cherni Order 3381 Circulation A b V1LFti of the State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 6-B (Increased) (tJ. FIG. Subscription