SU1217324A2 - Laboratory sprayer - Google Patents

Description

. 2. The duster according to item i, about t l and, they drink with the fact that the output

one

The invention relates to laboratory dusting agents and can be used to study the efficacy of powdered preparations on living test objects.

The purpose of the invention is to simplify the design, reduce the size, improve the conditions of service and expand technological capabilities.

The drawing depicts a laboratory opativatel and a bulk material feed mechanism.

The laboratory duster includes a bulk material supply mechanism 1; a dispenser 2, a housing 3 rigidly attached to the base 4, a vertical stand 5 rigidly attached to the base 4, a table 6 mounted on rolling bearings on the rack 5, a cap 7 mounted on the landing table 6, a removable tray 8, holders 9 containers 10. The table drive consists of a gear motor 11 and a gear 12; the spray gun 2 is driven by an individual electric motor 13. The holders 9 are permanently provided. These magnets, with the help of which they are held on the shafts 14 which at the other end have friction rollers 15 rolling on the surface of the copier 16, the bearing housings of the shafts 14 are pivotally connected to the table 6 and the spring 17 is constantly pressed against the copier 16 until the rollers 15 its surface 18. The bulk material feed mechanism 1 is designed for continuous supply of the drug to the rotating nozzle 2 and consists of a funnel 19, a seat 20, a spring 21 and a nut 22. The floor of the funnel 19 in the upper part is equipped with a spherical protrusion q, horizontal urtom S, and the bottom of the guide cone B. In the working position mechanism 1 poda- chi particulate material is attached to the cover 7 so that the bottom of the channel 19 enters the funnel konit

part of the hole of the funnel is made with the extension.

Comb needle 23 rigidly attached to the base of the atomizer 2 eccentric to the axis of the atomizer. The surface of the needle is in constant contact with the surface of the canal of the funnel 19. The spring 21 constantly presses the funnel 19 to the cylindrical protrusion of the seat 20. The electrical circuit provides the possibility of adjusting the rotational speed of the sprayer 2,

The laboratory opiate works in the following way.

A given number of living test objects (insects), such as weevils, is placed in each iO tank and placed in holders 9. The gearmotor 11 is switched on, which, through the gear train G2, rotates table 6 around the central axis. Since the spring 17 constantly presses the rollers 15 to the surface of the copier 16, when the table 6 rotates, the shafts 14 also rotate around their axes under the action of friction and along with them the containers 10 rotate. Thus, the containers with the test objects rotate around their axis and planetary movement around the central axis. At the same time, the electric motor 13 is turned on, on whose shaft the spray gun 2 is fixed. When the spray gun 2 rotates, the needle 23 attached to its base rotates eccentrically to the axis of the spray gun and acts with its outer surface on the inner surface 2 of the funnel channel 19, driving it in an oscillatory circular motion relative to the support spherical surface a. In this way, the constant vibration of the funnel 19 is ensured.

The prescribed dose of the pulverized drug is poured into the funnel 19, and as a result of its vibration, the drug constantly spills into the annular gap, forming between the inner surface g of the funnel channel 19 and the outer surface of the conical needle 23.

3

The size of the slit, and therefore, the flow rate of the pulverized product entering the base of the spreader 2, is controlled by lowering (or raising) the bulk material supply mechanism 1 relative to the cap 7 by means of their threaded connection. Due to the conical shape of the needle, when the mechanism 1 is lowered, this is reduced, and when it is raised, it increases.

As a result of the mesh design of the cylindrical part of the nebulizer 2, under the action of centrifugal force, a uniform, fluid-like cloud is formed, which settles on the inner surface of the containers 10.

 At the end of the dusting, all the drives are turned off, the cap 7 is removed, the containers 10 with the treated insects are tied up with a base cloth and placed in a thermostat for aging. After a certain exposure time in a thermostat, the number of dead insects is counted and the results are compared with the same number of experiments performed on a fresh (reference) preparation. According to the results of the comparison, after statistical processing of the results of the runs, a conclusion is drawn on the degree of toxicity of the studied drug by the biological method.

Editor fl. Kishtulinets

Compiled by N.Evseev

Tehred A.AchCorrector L.Patay

Order 1020/3 Circulation 679 Subscription

VNIITI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, RaushskA emb., 4/5

Branch PPP Patent, Uzhgorod, Proektna St., 4

to

15

173244

Due to the fact that the funnel 19 is in a constant intense vibration, the adhesion of the preparation to the surfaces of the funnel 5 and the needle 23, i.e. full discharging of the preparation from the funnel is ensured. Because the pulverized material supply mechanism 1 is mounted on the cap, the preparation time of the fitter is significantly reduced, since removing the cap is not associated with additional operations. Significantly improved service conditions. The possibility of a vertical movement of the feed mechanism of the pshevidnogo material relative to the cap has provided the possibility of a wide range of control of the flow rate of the supplied drug. The eccentric position of the needle 23 relative to the axis of the nebulizer 2 provides the required amplitude of oscillation of the funnel 19, and the possibility of changing the rotational speed of the nebulizer provides the necessary duration for the preparation to spill onto the base of the nebulizer 2. Due to the fact that the lower part of the funnel channel is made over the cross section of the truncated cone, a convenient cap is provided. fixed on it by the feed mechanism to (Binder.

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Claims (2)

1. LABORATORY SPRAYER by ed. St. No. 1033104, characterized in that in order to simplify the design, reduce the dimensions, improve service conditions and expand technological capabilities, the sprayer is equipped with a conical needle eccentrically mounted on its base, located in the outlet of the funnel, which is mounted on the cap with the possibility of vertical movement and spring-loaded. SU, .., 1217324 '41217324. 2. The pollinator is in accordance with π. о, it is easy to understand that the outlet part of the funnel opening is made with expansion.