CZ21393U1 - Double segment flap - Google Patents

Description

Double segmental flap

Technical field

The subject of the utility model relates to controlling the supply of bulk material, for example, to automatic weighing dosing scales.

BACKGROUND OF THE INVENTION

Material weighing is usually carried out in two power stages, rough and fine. The reason for this method is usually the requirement for precise weighing of the dose. The basic requirement is the adjustable power of the individual weighing phases.

A belt conveyor, vibrating feeder or auger feeder is used as a common principle of controlled material feed. All of these devices are generally electrically driven and require additional electronic circuits for control.

As a simple filling method, an adjustable butterfly flap is used in two stages, which uses a natural gradient of material from the container to feed the material. It is usually adjustable in two positions by pneumatic actuators. The disadvantage of the arrangement is, above all, the complicated operational positioning for low material flow performance and the complicated replacement of the damper itself as it passes through the material.

The essence of the technical solution

The disadvantages of this solution are eliminated by the material flow control devices, namely a double segment flap arranged with a pneumatic drive according to the utility model. The device consists of two independent segment dampers, the main dampers and the dampers for fine filling in a common body. Each damper is controlled by its own pneumatic cylinder. In the fine filling flap there is an opening with variable cross section adjustable by means of a slide. In the damper body there is also a shaft with an adjusting screw mechanism for reducing the material flow

Clarification of drawings

Figure 1 is a front elevational view of the double segment flap.

Figure 2 is a front elevational view of the double segment flap with the covers removed.

Figure 3 is a rear view of the double segment flap with the covers removed.

Example of technical solution

The double segment damper consists of a body 8 with two independent systems namely a main damper 1 driven by a pneumatic cylinder 2 and a damper 3 for fine filling driven by a symmetrical pneumatic cylinder 4. When both flaps 1 and 3 are opened, the material is conveyed with maximum power. If the fine filling flap 3 is closed, the filling performance is reduced. The amount of fine filling dosing capacity is adjustable by varying the position of the damper 7 located in the slot of the fine filling flap 3. To control the flow of the coarse fill, the trailer 5 is used, the working position of this trailer 5 being externally adjustable by the adjusting screw mechanism 6. When the main flap I closes, the material feed stops.

Industrial applicability

The device can be used in the field of industrial weighing. It realizes an element for regulating the dosing material, for example, into storage scales.

Claims (1)

PROTECTION REQUIREMENTS Double segmental flap, characterized in that it consists of a tubular body (8) with a main flap (1) driven by a cylinder (2) and a fine filling flap (3) driven by a cylinder (4), wherein in the fine filling flap (3) is a hole with a variable cross-section adjustable by means of a child's play (7) and furthermore in the body (8) of the trailer (5) with an adjusting screw mechanism (6) for reducing material flow.