CN2125133U

CN2125133U - Slowly opening door bucket metering installation

Info

Publication number: CN2125133U
Application number: CN 92225588
Authority: CN
Inventors: 杨增力
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-26
Filing date: 1992-06-26
Publication date: 1992-12-16

Abstract

The utility model discloses a slowly opening door bucket metering installation. The feeding is divided into two step which are the coarse feeding and the fine feed by the control of the slowly opening door bucket metering installation, raising the measuring accuracy. So fine static measuring is achieved by the complete set of the metering device, which is superior to various existing belt type metering device. The utility model is suitable for the material proportioning and measuring of cement, construction material, chemical industry, foodstuff, feedstuff, etc.

Description

Slowly opening door bucket metering installation

The utility model relates to a kind of powdery, the employing elbow joint open and close door of granular material batching and bucket type measuring apparatus of opening the door slowly of major and minor thallium platform balance structure of being used for.

In early days, in the batching and metering of powdery, granular material, once carry out a kind of bucket type measuring apparatus, can consult the instructions of the numerical control bucket type batching electronic scale of human relations religion electric equipment factory production.Its adopts the bin gate of electromagnet structure control hopper, is characterized in utilizing the adhesive of electromagnet, discharges the open and close of drawing bin gate, therefore has simple in structurely, and still, there is following shortcoming in the advantage of static weighing:

1, owing to rely on attractive force of electro-magnet to prop up the pressure of material when reinforced, so power is big, power consumption is high, otherwise electromagnet can not be with the bin gate adhesive of opening to the position of closing, and props up the pressure of material;

2, momentum is very big because action time of electromagnet is short, speed is fast, so open very strongly to the bump of hopper at closing time, has a strong impact on the precision of metering and the life-span of machinery.

This bucket type measuring apparatus owing to there is above-mentioned shortcoming, is therefore replaced by the belt-type measuring apparatus gradually.

Popular both at home and abroad at present belt-type measuring apparatus kind is more, and speed governing type, constant speed type and cantilevered are arranged, and cantilevered is divided into single swing arm type and double cantalever type again.Chinese patent CN86207515 is exactly a kind of double cantalever type belted electronic balance, and its characteristics all are to rely on load sensor, gather streams online weight when belt, so their deficiencies below common the existence.

1, the elasticity of balata belt makes the material on the operating belt produce vibration, and the vibration that the imbalance of mechanical driving part produces make the measuring accuracy of this class dynamic measurement mode have limitation, and maintenance capacity is big;

2, effectively load-bearing capacity is limited;

3, complex structure, the cost height.

The purpose of this utility model is to overcome the shortcoming of bucket type measuring apparatus, utilizes its advantage, avoids the deficiency of belt-type measuring apparatus, weeds out the old and bring forth the new and a kind of bucket type measuring apparatus of opening the door slowly is provided.

The utility model is made up of two major technique features:

One, the hopper that opens the door slowly of employing elbow joint switch door, it comprises hopper, bin gate and elbow joint door opening/closing apparatus.The elbow joint door opening/closing apparatus is by two constituting by arm crooked or that stretch of linking mutually, the other end of two arms is connected with power machine with bin gate respectively, with being connected of power machine is to pass through gear by the load-bearing tandem shafts, the length of two arms is by the distance and the open angle decision of bin gate of hopper and power machine, and the position of bin gate is located at the bottom of hopper or the side of hopper.

Its two, adopt the measuring apparatus of major-minor thallium structure, it comprises scale and scale thallium.The scale thallium is made up of main thallium and secondary thallium, and secondary thallium is attached on the main thallium.Mode of connection or soft binding, or movable the binding.

Accompanying drawing 1 is the structural drawing of the magazine attachment that opens the door slowly

Accompanying drawing 2 is the structural drawing of measuring apparatus

In conjunction with the accompanying drawings technical characterictic of the present utility model is described further.

As shown in Figure 1, magazine attachment is made up of hopper 1, bin gate 2, elbow joint door opening/closing apparatus 3, gear 4 and micromotor 5.Hopper 1 and micromotor 5 are fixed on the base 6, and shake machine 7 of feed electricity is reinforced usefulness.

Micromotor 5 drives one by galianconism and the long-armed elbow pass door opener 3 that constitutes after gear 4 slows down, thereby realizes the opening and closing of bin gate.When micromotor 5 was turned right, elbow joint was crooked and bin gate is slowly opened; When micromotor 5 turned left, elbow joint stretched and bin gate is slowly closed, and in reinforced process, the pressure of material passes to the load-bearing axle by the elbow joint that stretches.The pressure that elbow joint that so this device is dependence to be stretched and load-bearing axle prop up bin gate, rather than the power of dependence propulsion system props up the pressure of bin gate.

As shown in Figure 2, measuring apparatus is made up of scale 8, main thallium 9 and secondary thallium 10.Secondary thallium 10 is by carefully getting in touch on main thallium 9, and this is a kind of easy mode that is flexible coupling.Maybe can adopt the binding of manner.

The movable structure that links also can be taked various ways, as adopts a string nail to link by the center pit and the main thallium of secondary thallium.When main thallium rises, secondary thallium is mentioned with the string nail; When main thallium descended, the string nail broke away from secondary thallium.Maybe can adopt the structure of two barbs is up and down arranged on the secondary thallium.When main thallium rises, hang up the last barb of secondary thallium, secondary thallium is mentioned; When main thallium descends, the last barb of secondary thallium and the disengaging of main thallium, and the following barb of secondary thallium is placed on the fixing cross bar, avoid secondary thallium to break away from main thallium like this after, have at all with main thallium and to care for.

It is in order to realize the two-stage measure control that the utility model adopts major and minor thallium structure, improves the measuring accuracy of bucket type static weighing, and so-called two-stage measure control will be fed in raw material exactly and is divided into thick reinforced and thin reinforced two steps and carry out, and will be existing that process prescription is as follows:

After bin gate 2 is closed, the feed electricity machine 7 that shakes is reinforced to hopper 1 at full speed, be called thick reinforced, when weight of material reaches the weight of main thallium setting, platform balance lever balance below the magazine attachment, its scale 8 drives main thallium 9 and upwards rises, when being raised to certain altitude, main thallium 9 hangs up secondary thallium 10 with following fine rule tension, owing to added the weight of secondary thallium 10, make the lever out-of-balance condition, scale 8 and main thallium 9 just stop to rising, and at this moment, sensing device sends induced signal to control system, control system stops thick reinforced immediately, and transfers to thin reinforced immediately.

So-called thin reinforced is exactly that the feed electricity machine 7 that shakes adds the weight of replenishing by secondary thallium setting with very slow speed in hopper 1, when the thing weight of hopper 1 reaches the total weight of

main thallium

9 and 10 settings of secondary thallium, platform balance is lever balance again, scale 8 and main thallium 9 are hung secondary thallium 10 and are upwards being risen together, this moment, sensing device sent induced signal again to control system, and control system stops thin reinforced immediately.

If will further improve measuring accuracy, also can take multistage reinforced control.

The utility model has produced good actual effect owing to taked above-mentioned two technical measures, and the surface is aspect following two:

1, because this device is the pressure that relies on the elbow joint stretch and load-bearing axle to prop up bin gate, rather than rely on driving force to prop up the pressure of bin gate, so driving power is very little, and the action of switch door is very steady, without any bump and vibration.The perfect like this bucket type device of static weighing, not only simple in structure, cost is low, and energy-conservation, reduces maintenance, increases the service life, and it is newborn that the bucket type device is obtained.

2, because this device is taked the reinforced control of two-stage, the measuring accuracy of platform balance can be compared with the precision of electronic scales.

For general platform balance, has only a main thallium, because the inertia effect when main thallium is static, after reaching setting weight, scale and main thallium just slowly upwards rise, and will could produce induced signal through behind certain move distance, this hysteresis phenomenon, can not stop accurately immediately feeding in raw material, the weight of material in the hopper will exceed the weight of setting, and the error in dipping that brings like this is:

Error in dipping=(lag time * thick reinforced flow)/(material charge weight)

Though after adopting major and minor thallium, have hysteresis phenomenon equally, thin reinforced only for replenishing weight, its flow only be slightly feed in raw material 1/tens, error in dipping at this moment is:

Error in dipping=(lag time * carefully reinforced flow)/(all weight of material)

This shows that the reinforced control of two-stage can obtain higher measuring accuracy.

This device is widely used in the batching and the metering of industries such as cement, building materials, chemical industry, grain and feed.

Claims

1, a kind of magazine attachment that opens the door slowly of the bucket type measuring apparatus of opening the door slowly, form by hopper, bin gate and power machine, it is characterized in that also comprising an elbow joint door opening/closing apparatus, the elbow joint door opening/closing apparatus is made of two interconnective energy arms crooked or that stretch, the other end of two arms is connected with power machine with bin gate respectively, is to pass through gear by the load-bearing tandem shafts with being connected of power machine.

2, device according to claim 1 is characterized in that the position of bin gate is located at the bottom of hopper, or is located at the side of hopper.

3, device according to claim 1 and 2 is characterized in that power machine is a micromotor.

4, a kind of measuring apparatus of the bucket type measuring apparatus of opening the door slowly, form by scale and scale thallium, it is characterized in that the scale thallium comprises main thallium and secondary thallium, secondary thallium is attached on the main thallium, have only the weight of main thallium to work during thick feeding in raw material, when reaching the weight of setting when slightly feeding in raw material, main thallium rises to certain altitude and takes up secondary thallium.

5, device according to claim 4 it is characterized in that being connected or adopting soft binding of secondary thallium and main thallium, or the employing activity links.

6, device according to claim 5 is characterized in that soft binding is the easiest to adopt a fine rule that it is linked, and movable binding can adopt coupling type to link.

7, device according to claim 6, it is characterized in that coupling type links can to adopt at the center pit of secondary thallium wears a drift bolt and the binding of main thallium, or to adopt secondary thallium be the structure of double-deck barb, main thallium tangles the barb on upper strata when rising, major and minor thallium is linked, when main thallium descended, lower floor's barb of secondary thallium hung on the fixing spreader and throws off with main thallium.