CN2107013U - Automatic liquid weighing apparatus - Google Patents

Abstract

The utility model discloses an automatic liquid weighing device which has a simple structure, uses no electricity and can continuously weigh. The rotary supporting point position of a lever balance is fixedly connected with a weighing rod which is perpendicular to the balance and has a certain height and weight. A pair of weighing containers with automatic overturn devices is arranged on the symmetrical positions of both ends of the lever balance. A liquid diverter controlled by the swinging direction of the balance is arranged on the center of the upper direction of the pair of weighing containers. The device utilizes a defined torque generated by the way that the gravity center deviates from the rotary supporting point after the weighing rod swings. The divider divides the liquid into a weighing container in an opposite side to generate an opposite torque for weighing.

Description

Automatic liquid weighing apparatus

The utility model relates to a kind of liquid machine poidometer, especially a kind of beam balance poidometer.

Present known a kind of liquid poidometer, comprise the liquid deposit box, pound claims, be placed on this pound and deserve to be called the container that is used for weighing liquid, a catheter is housed, liquid is imported weighing in the container by this pipe in this deposit box bottom, feed opening at catheter is equipped with a blanking solenoid valve, at container bottom another discharging solenoid valve is housed, these two solenoid valves are by a controller control that has a delay circuit, control the switching of each solenoid valve according to being installed in telltale on pound weighing lever.During weighing, earlier pound is claimed to set set-point, opening controller then, at this moment, the blanking solenoid valve is opened and the discharging closed electromagnetic valve, and liquid flows into container through feed opening, when reaching setting value weight, pound claims the weighing lever action, and telltale is passed to controller with this signal, closes the blanking solenoid valve, open the discharging solenoid valve simultaneously, delay circuit time-delay reasonable time, treat that liquid is unsnatched from container after, close discharge valve again, open baiting valve simultaneously, carry out the next round weighing, the automatic weighing overall process of liquid is promptly finished in circulation so repeatedly.The shortcoming of this device is: (1) control structure complexity; (2) can not consecutive weighings; (3) need electrification during weighing.

The purpose of this utility model provide a kind of control structure simple, can consecutive weighings, do not need the liquid poidometer of electricity consumption.

For achieving the above object, the utility model adopts one and shoulders the bar balance as meausring apparatus, one of fixed installation is perpendicular to lever and have certain altitude and the weighing bar of weight on the rotating fulcrum position of this beam balance, this bar can swing together along with beam balance, when swinging to the left side or the right, the deviation of gravity center rotating fulcrum of weighing bar has produced a moment, utilizes the just automatic weighing liquid of energy of this moment.Concrete method is provided with an energy liquid is diverted to the liquid cyclone on beam balance both sides respectively above beam balance, this shunt is subjected to the control of beam balance swing, when being flapped toward the left side, with separating liquid to the right, otherwise be diverted to the left side; But the both sides on the beam balance are provided with the container of a pair of overturning symmetrically, are used for weighing liquid, when swinging to the left side or the right, just in time are correspondingly positioned at the shunt left side or the right shunting feed opening below; The two ends, the left and right sides of weighing bar swing route are provided with a pair of amplitude modulation apparatus that limits and regulate the amplitude of oscillation symmetrically, and the swing route end of two overturning containers is provided with a device that is used for overturning respectively, and the below of overturning container overturned position disposes a funnel respectively.This device is to finish automatic weighing work like this; During weighing, earlier balance is tilted to the left side or the right, weighing this moment bar is flapped toward the left side or the right, the deviation of gravity center rotating fulcrum of this bar, produce a definite moment with it, the shunt this moment that is subjected to beam balance control with separating liquid to one side opposite, along with the also corresponding increase of this moment of continuous increase of liquid, when being increased to when equating with the moment of weighing bar with swaying direction, it yaw center, because the swing action of inertia, the weighing bar will pass through mid point, is flapped toward another side, when the overturning container that liquid is housed is put end, by being located at terminal tilting device with this container tipping, liquid flowed in the funnel of below, when the weighing bar was put mid point, shunt again with separating liquid in the another side container, repeat said process, so repeatedly, just finished the overall process of the automatic weighing of liquid.

Separating liquid can adopt the shunting of cylinder T-valve, also can adopt the shunting of ∧ shape splitter box.Use latter's shunting, need this splitter box is fixed on the weighing bar, swing with this bar, in addition, the liquid feed opening should be located at the balance rotating fulcrum directly over.The effect one of amplitude modulation apparatus is the amplitude of oscillation of weighing quantity fixing bar, the 2nd, the amplitude of oscillation of regulating the weighing bar, regulate the amplitude of oscillation and just can adjust the weighing error of alleged weight and both sides weighing container, this amplitude modulation apparatus is easier with the lead screw that adopts a pair of symmetry parallel with balance.The tilting device of weighing container can take to adorn at the back of container a vertical bar, on the swing route of this bar, a barrier is set, utilize this barrier to hinder this bar motion, with the container tipping, this barrier is easier with the straight-bar parallel with balance that adopts a pair of symmetry.

In order to obtain higher weighing precision, the error of weighing before and after reducing, the stable of liquid level is vital in the maintenance liquid deposit box.Therefore, the constant device of liquid level should be set in case, what the utility model adopted is the constant valve of fly rod liquid level, and this constant valve is simple and practical.In addition, a center of gravity hammer that can move up and down is installed on the weighing bar, by moving up and down the position of this center of gravity hammer, the weight of the alleged liquid of adjustment that just can be by a relatively large margin.

The advantage of the utility model liquid poidometer is: (1) need not use baroque electric equipments such as solenoid valve, adopts devices such as simple beam balance, just can finish the automatic weighing work of liquid; (2) weighing liquid continuously; (3) do not need electrification; (4) weighing precision can reach 1%.

Below in conjunction with accompanying drawing the utility model liquid poidometer is described in further detail.

Fig. 1 is the structural representation of facing of the utility model embodiment 1.

Fig. 2 is the left side TV structure synoptic diagram of the utility model embodiment 1.

Fig. 3 is the structural representation of facing of the utility model embodiment 2.

Fig. 4 is the left side TV structure synoptic diagram of the utility model embodiment 2.

By Fig. 1,2 as can be known, the beam balance ［ 1 ］ of the utility model liquid poidometer embodiment 1 is placed on the brace table ［ 2 ］, and weighing bar ［ 3 ］ is fixedly connected on beam balance rotating fulcrum ［ 23 ］ position, and perpendicular to beam balance.A center of gravity hammer ［ 4 ］ that can move up and down is fixed in activity on the weighing bar, but the weighing cup ［ 5 ］ ［ 6 ］ of a pair of tipping is set symmetrically at the two ends, the left and right sides of beam balance, vertically be equipped with one respectively at the rear side of each weighing cup and turn over bar ［ 7 ］ ［ 8 ］, end at the swing route that respectively turns over bar is respectively equipped with a straight-bar ［ 9 ］ ［ 10 ］ that hinders this bar swing, this straight-bar is parallel with beam balance, is respectively equipped with a funnel ［ 11 ］ ［ 12 ］ below each weighing cup tipping position.What liquid cyclone adopted is a cylinder T-valve ［ 13 ］, be fixed on the perpendicular of beam balance rotating fulcrum, be connected on the diverting valve by one, the crank connecting link ［ 14 ］ of one head-clamp on the weighing bar is with its rotation, adopt the shunting of threeway principle, liquid after the shunting is drawn by left shunt pipe ［ 15 ］ or right isocon ［ 16 ］ respectively, and the feed opening of each isocon just in time lays respectively at the top, top of the weighing cup swing position that cooperates with it; The amplitude modulation apparatus of weighing bar adopts the lead screw ［ 17 ］ ［ 18 ］ parallel with balance of a pair of symmetry, is fixed on the two ends, the left and right sides of weighing bar swing route respectively; Liquid deposit box ［ 19 ］ is arranged on the top of diverting valve, and catheter ［ 20 ］ is drawn from this case bottom, communicates with diverting valve, and a blanking valve ［ 21 ］ is housed; The constant valve of fly rod liquid level ［ 22 ］ is installed in the top of deposit box.This device is to finish the automatic weighing process of liquid like this: at first the weighing bar is flapped toward on one side, the left side for example, open baiting valve then, because swing, crank connecting link drives diverting valve and rotates counterclockwise, and to right isocon, this moment, right weighing cup was just in time put the feed opening below of this pipe with separating liquid, caught the liquid that flows down, weighing begins to carry out.When the right moment that produces when the liquid weight that connect reached the left moment that produces with the weighing bar and equates, balance began to swing to the right, and one to move be out of trim, put till the right can not swing always.When putting right-hand member, the bar that turns over of right weighing cup back is run into right straight-bar, and the weighing cup is by tipping, and liquid is poured in the funnel of bottom right.When the weighing bar was put to the right, crank connecting link drove diverting valve again and clockwise rotates, when putting right-hand member, just in time with separating liquid in the left shunt pipe, repeat above-mentioned weighing process, so repeatedly, just finished the overall process of the automatic weighing of liquid.Regulate alleged weight as need, the position of up-down adjustment center of gravity hammer just can be finished, and as the alleged liquid weight in both sides error is arranged, and can appoint and regulate the correction of the screw position of amplitude modulation on one side.The constant valve of fly rod liquid level makes the liquid level in the deposit box keep constant, with the error of avoiding weighing successively to produce.

Fig. 3, Fig. 4 are the embodiment 2 of the utility model liquid poidometer, comparison diagram 1,2 and Fig. 3,4 as can be known: embodiment 2 adopts ∧ shape splitter box ［ 23 ］ except liquid cyclone, and weighing container adopts outside the tipping bucket, and all the other structures are identical with embodiment 1.∧ shape splitter box is fixedlyed connected with the weighing bar, swing with bar, both sides shuntings feed opening left-right symmetric, be positioned at the tipping bucket that is mated directly over, the feed opening of the catheter of drawing from the deposit box bottom is positioned on the perpendicular of beam balance rotating fulcrum, directly over the splitter box top.As shown in Figure 3, when mid point was put at the top of this splitter box, liquid dropped on the opposite branch flume on one side with swaying direction, thereby has finished shunting work.This embodiment is except that shunting principle is different from embodiment 1, and all the other principle of work are identical with it.

Claims (3)

1, a kind of liquid poidometer, comprise the liquid deposit box, be connected the catheter of this lower box part, be contained in the valve on the catheter, be positioned at the beam balance of deposit box below, it is characterized in that: connect one perpendicular to beam balance and have certain altitude and the weighing bar of weight [3] in this beam balance rotating fulcrum stationkeeping, two ends, the left and right sides at this bar swing route are provided with a pair of amplitude modulation apparatus [17] [18] symmetrically, one liquid cyclone [13] is set between beam balance and deposit box, but the right and left on beam balance is provided with the weighing container [5] [6] of a pair of tipping symmetrically, on this swing route, a tipping unit [9] [10] is set respectively, below the tipping position, disposes a funnel [11] [12] respectively weighing container.

2, liquid poidometer according to claim 1, it is characterized in that: this amplitude modulation apparatus is a pair of lead screw parallel with beam balance ［ 17 ］ ［ 18 ］, this liquid cyclone is one to be fixedly connected on the ∧ shape splitter box ［ 23 ］ on the weighing bar, this weighing container is the tipping bucket ［ 24 ］ ［ 25 ］ of a pair of tipping direction perpendicular to swaying direction, its rear wall respectively is equipped with vertical with this a wall bar ［ 7 ］ ［ 8 ］ that turns over, and the tipping unit of Pei Heing is the straight-bar ［ 9 ］ ［ 10 ］ parallel with beam balance of a pair of symmetry with it.

3, liquid poidometer according to claim 1 and 2 is characterized in that: be provided with a constant valve of fly rod liquid level ［ 22 ］ in the liquid deposit box, a center of gravity hammer moving up and down ［ 4 ］ is fixed in activity on the weighing bar.

Images