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画板 1 拷贝
TECH-EXHI
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New Screw Cement Filler
2020.08.18

Summary:Through the analysis of the shortcomings of the existing cement filling machine, but also developed and designed a new type of spiral cement filling machine. Its technical parameters, structure, principle, characteristics and application effect, the filling machine is especially suitable for cement, fly ash, talcum powder and other loose powder measurement weighing and packaging.

At present, there are DGT type and BGY type series of cement filling system, after using, we think that the above technology has the following shortcomings.

(1) The above products all adopt the fan blade rotating type ash conveying method, when the fan blade is flapping, the ash and the wind exist at the same time, when loading the bag, the ash quality is loose, the gas accompanied by the ash powder overflows from the bag mouth, the pollution is very serious.

(2)Because of the loose ash in the bagging process, the ash powder in the bag extrusion is not real, for this reason, it not only affects the measurement, but also can't be tapped by hand.

(3)The ash discharge nozzle is easy to jam the gate. Ash powder fineness is not enough, clean up the gate task is heavy, time-consuming and laborious, affecting the work.

(4) measurement is not allowed, when the voltage peaks and valleys of large changes, the proximity switch sensitivity has a large change, the sensitivity is too high when the bag weight is reduced, and vice versa, the bag weight is too high.

(5) fan blade damage rate is very high, as long as the ash within the occurrence of debris such as nails, screws, iron segments and other things, the fan blade is bound to deformation.

(6) In the present cement filling system, the leakage of ash often occurs in the process of packing cement, and the method adopted is to plug the ash leakage with asbestos packing gland at the ash leakage place, but in this way, after the asbestos packing is worn out, it can't play the effect of anti-leakage, and its anti-leakage role of the anti-leakage gates set up externally, and this setup can't achieve the purpose of a good anti-leakage out of ash as well.

In order to overcome the shortcomings of the existing technology, we have developed and designed a fully automatic screw cement filling machine. Especially suitable for cement, fly ash, talcum powder and other loose powder measurement weighing and packaging.

1 Main technical parameters

Take single nozzle spiral cement automatic filling machine as an example, its main technical parameters are as follows.

(1) bag weight: 50sh 0.5Kg, bag weight qualification rate: 99%; (2) Hourly output: 20~25 tons / mouth; (3) Screw feeding motor: power 5.5 KW, model Y132S2-4; (4) gate motor: motor power 1.1 KW, model Y90S-4; (5) Vertical height of 1600 mm, front and rear length of 1320 mm, the left and right length of 600 mm. (6) Vertical height 1600 mm, front-back length 1320 mm, left-right length 600 mm. The above output is related to the powder temperature, fluidity and bag insertion speed.

2 Main structure and principle

Screw cement automatic filling machine is mainly composed of machine frame, conveying device, intermediate bin, weighing module, hanging plate clamping bag dropping mechanism, gate mechanism and so on.

2.1 Conveying device structure and working principle

The conveying device is mainly composed of pulley, main shaft, overflow valve plate, reamer, pump body, ash nozzle and so on. When the reamer rotates, the gate is closed, the pressurized powder through the overflow slot above the reamer top open overflow valve plate for overflow, the valve plate is open, close the mouth of the return of powder due to high speed, so that the valve plate below the formation of the screen wall, so that the powder into the mouth shall not fall, the formation of the inner cycle, when the discharge gate is open, the powder discharged out of the pump, the pump pressure drops, the overflow valve plate in the decompression and the warehouse pressure. After returning, the overflow slot mouth is blocked, so that the pressure of the pump increases so that the discharge speed is fast and does not block the mouth. The existence of overflow tank and overflow valve plate makes it possible to close the discharge gate without boring the machine.

2.2 Structure of the gate mechanism

Principle of operation of the gate mechanism of the gate motor 1 its output shaft inserted into the hollow three-claw mandrel 2 holes with key coupling, the mandrel of the three claws were floating with friction plate equipped with centrifugal block, centrifugal block of the outer set of steel wire ring, the mandrel through the rolling bearings and its shell, through the cover connection, the shell is fixed to hit the iron and toggle plate, the two sides of its respectively through the motor fixed to the bottom plate of the outer sleeve equipped with nylon buffer column and its buffer Cushion, bumping iron and nylon buffer column limit with the toggle plate is eccentrically fitted with rollers, the rollers and set in the guide sleeve of the long holes on the push-pull rod sliding with the push-pull rod is fixed on the top of the plate, the plate is fitted with a movable bumping rod above the plate and the gate hinged, the bumping rod and the hanging plate to clip off the bag mechanism of the plate with the impact of the machine. Insert the bag after the gate motor is energized, the motor rotates clockwise, the gate opens, to be 0.4 seconds after the motor rotates, the relay's delayed disconnect normally closed contact breaks, the contactor coil is de-energized, the motor stops rotating, and opens the gate completely. The conveying device discharges the powder, and when the bag weight reaches the requirement, the contactor coil is energized, the motor starts to rotate counterclockwise, and the gate is closed. The heavy bag falls down automatically and completes a cycle. Insert the bag again to start the next cycle.


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