SU1315716A1 - Feeder - Google Patents

Abstract

The invention relates to lubrication batch devices. The purpose of the invention is to increase the efficiency of a feeder by controlling the air supply and smoothly adjusting the lubricant dose. The feeder includes a housing with a spring-loaded plunger having a metering groove. In the process of moving the plunger switches the air supply channels, the metering chamber with the outlet channel. The feeder has a system for shutting off the air supply channel after a dose of lubricant has been dispensed, ensuring that the plunger returns to the middle position at which the air supply channel is closed. The overlap system is made in the form of an air channel connected by a choke with an air-capacity. The throttle provides adjustment of the response time. The power plunger is made of two parts, screwed to regulate the volume of the dispensed groove. 1 hp f-ly, 2 ill. from sl vj

Description

one

The invention relates to liquid portioning devices and can be used for remote labeling of products with liquid dyes, supplying a lubricant for lubricating pneumatic drives, various pneumatic devices, as well as other pneumatic controlled machines and mechanisms for supplying liquid for technological purposes.

The purpose of the invention is to increase efficiency by reducing air flow and adjusting the volume of the metering groove, which is achieved by controlling the supply of compressed air in the feeder and ensuring smooth control of the volume of the metering groove.

FIG. 1 shows the feeder; in fig. 2 shows a section A-A in FIG.

The compressed air feed portion feeder comprises a plunger body consisting of two parts 2 and 3, preloaded with spring 4, a throttle needle 5 with a seal 6, a handle 7 with a seal 8, an emphasis 9 with a channel 10 for supplying air. The housing 1 has a channel 11 for regulating the supply of compressed air, a channel 12 for creating backpressure, a channel 13 for supplying liquid, a pneumatic cavity 14, a boring 15 providing minimum clearance with the plunger and its axial movement, boring grooves 16-18, the output channel 19. In parts

The 2-plunger has a groove 20, into which a pin 21 is inserted, pressed in the housing 1 and allowing the plunger to move along the axis. In part 3 of the plunger made longitudinal grooves 22

and 23. The knob 7 interacts with the plunger part 3 through the groove 23 with a pin 24 pressed into the knob 7 and allowing the plunger to move freely in the axial direction. The handle 7 freely rotates in the housing 1 and is fastened thereto by screws 25 with the aid of a clamp 26.

The feeder works as follows.

The compressed air is supplied through the channel 10 into the cavity 27 of the bore 15 and, compressing the spring 4, displaces parts 2 and

3 plunger. During the movement of the plunger, first opens channel 12 and air, the passage through the gap formed by the end face 28 of channel 12 and the needle

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The cavity 14, then through the channel 29 and the groove 22 - into the cavity of the bore 15 of the spring-loaded end of the plunger. At the end of the plunger movement, the stop 30 on the part 2 of the plunger rests on the pin 21, and the dispensing groove 31 filled with liquid from the boring groove 16 moves into the boring groove 17. At the same time, the compressed air enters the boring groove 17, traps the liquid from the dispensing groove 31 and transports it via exit 19 to its destination. During this time, the air pressure on the spring-loaded end of the plunger reaches such a limit, when the force from the air pressure in the spring-loaded cavity of the plunger, together with the force of the spring 4, is greater than the force from the air pressure on the plunger in cavity 27 and it begins to move backwards.

With this, the engine and part 2 of the plunger first completely blocks the channel 11 and the supply of compressed air to the output channel 19 stops, and then, moving further, partially or completely blocks the channel 12 and stops, balanced by forces from the air pressure on the plunger on both sides, together with spring force 4. In this state, the plunger is until the pressure of compressed air is supplied to the channel 10. After relieving the pressure of compressed air in the channel 10, the spring 4 returns the plunger to its original position. The grooves 22 and 23 on the plunger interact with the groove 17 and the remaining air pressure in the spring-loaded cavity of the plunger is discharged into the outlet channel 19. The supply of compressed air for transporting fluid into the outlet channel 19 is controlled by the throttling needle 5 by closing the end 28 of the channel 12, and the number the liquid to be metered is adjusted by changing the width of the metering groove 31 of the plunger by screwing part 3 of the plunger onto part 2 with the handle 7.

When the next compressed air pulse is applied, the cycle repeats.

Claims (2)

1. A feeder comprising a housing with channels for supplying compressed air 313157 and a metered fluid, an outlet channel, an additional air supply channel connected to the output channel, and a bore in which a spring-loaded plunger is located with a dosing groove connecting at the extreme positions of the plunger with the liquid supply channel or the output channel; of air connected to the bore cavity on the side of the spring-loaded end of the plunger, which is connected at the extreme position of the plunger to the inlet of the additional air supply channel, due to the fact that, in order to increase the efficiency of the feeder, by reducing the air flow, the backpressure channel and pneumatic cavity are made in the housing connected through the throttle, on the plunger from the side of the spring-loaded end, longitudinal grooves are made, the back pressure channel and the pneumatic cavity are commuted with the bore, while the bore cavity is facing dive us five 0 five 164 a little end of the plunger is connected to the longitudinal nasaNiH in the extreme position of the plunger with the outlet channel, and in the middle position with the exit from the pneumatic cavity, the output of the backpressure channel in the bore is made before the exit of the additional channel for supplying air in the direction of the plunger stroke. 2. The feeder of claim 1, about tl, which is due to the fact that the plunger is made in two parts, which interact in a threaded connection with the possibility of adjusting the volume of the metering groove, a longitudinal groove is made in the spring-loaded part of the plunger, a pin is installed in the housing, In the longitudinal groove, on the side of the spring-loaded part of the plunger, the housing is provided with a handle that can be rotated, a pin is inserted in the handle, which is inserted into one of the longitudinal grooves of the spring-loaded part of the plunger. 27 25 / 7- / 7 18 22 3 2J 2928 1 5 6 9ig. I