CN2193541Y

CN2193541Y - Bag-form balance

Info

Publication number: CN2193541Y
Application number: CN 93221840
Authority: CN
Inventors: 张林军
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-13
Filing date: 1993-08-13
Publication date: 1995-03-29
Anticipated expiration: 2003-08-13

Abstract

The utility model discloses a balance unit which is made according to gas equation of state, the principle of liquid internal pressure conduction, and the Pascal law. The utility model is characterized in that the utility model uses equiareal plates arranged on two same liquid sacs to convert the equal weight of the objects on two scale pans to equal pressure and transmit the equal pressure to the colored liquid in the liquid sac, the two liquid sacs are connected through an elongated transparent flexible pipe, an air sac is connected to the middle, a switching device and a balance adjusting device are attached, and most of the length of two thin pipes are mutually closed and adhered into a flat ribbon shape. The surfaces of the two liquid columns in the thin pipes are at the same level when the balance has no load, and whether the weight of the objects on two dishes is equal can be judged through observing whether the two surfaces of the liquid columns are at the same level.

Description

Bag-form balance

The utility model relates to a kind of device of weighing object quality.

At present, known widely used cross beam type physical balance because complex structure, the member measure of precision is high and fragile, influence weighing accuracy and serviceable life, and carry, accumulating inconvenience all.

The purpose of this utility model provides a kind of brand-new balance, its structure is very simple, no high precision member, whole balance made by organic material, adopt folding box structure, not only volume is little, in light weight, and sound construction, be easy to carry, also have characteristics such as weighing accuracy is high and cheap.

The purpose of this utility model is achieved in that in the folding box body, two scales pan are positioned over respectively on the two equal hard equivalance plates of area, the equivalance plate adhere to separate respectively and two round pie liquid capsules that every physical parameter height equates on, two liquid capsules are drawn an isometric organic flexible pipe in transparent thin footpath respectively, the two flexible pipe other ends connect conducting by an air bag, near two thin diameter tube places air bag are provided with a switchgear, connect a balance regulator near a side liquid capsule tubule exit.Transparent thin diameter tube closes up bonding near the length the air bag switchgear mutually and is flat belt-like near liquid capsule exit, and edge-on coiling adheres to the lid inboard.Fill an amount of colored liquid in the liquid capsule, its amount so that in the side pipe on lid two fluid column faces equal and be near the position starting end.During use, open switch earlier, the adjustment device, make the interior two fluid column faces of tubule equal, off switch adds thing or counterweight on two scales pan then, after two fluid column faces in the tubule are roughly equal, open switchgear, accurately adjust two dishes according to the equal principle of fluid column face again and go up amount.The used counterweight of balance increases by 1.1,1.2,1.2 on the original basis, 1.5(unit: four counterweights gram).The weighing accuracy key of capsule formula balance depends on whether two equivalance plate areas highly equate and whether two thin diameter tube internal diameters are highly equal.

Owing to adopt such scheme, make the utlity model has structure novel, be easy to carry, advantages such as weighing accuracy height, low cost of manufacture.

The utility model is described in further detail below in conjunction with drawings and Examples.Dimensional units is " mm " (millimeter) in the accompanying drawing.

Fig. 1 be remove the scale pan, be open shape assist formula balance front elevation.

Fig. 2 assists formula balance A-A cut-open view.

Fig. 3 is the main box front elevation of removing behind the panel.

Fig. 4 is main box panel front elevation.

Fig. 5 is a lid I-I cut-open view.

1 left liquid is assisted among the figure, 2 right liquid are assisted, 3 equivalance plates, 4 scales pan, 5 balance adjustment chambeies, 6 balance knobs, 8 nitre rubbers pipes (band compressing tablet), 9 gas are assisted, 10 main boxes, 11 lids, 12 panels, 13 thin diameter tubes, 14 locating racks, 15 screw holes, 16 rodding eyes, 17 hinges, 18 organic thin bars, 7 switching knobs.

Be connected with hinge (17) between lid (1) and main box (10) in the embodiment of Fig. 1-shown in Figure 5, main box panel (12) is screwed on main box (10).Box body selects for use rigid plastic to make.The scale pan (4) can be gone up from equivalance plate (3) and freely pick and place, equivalance plate (3) adheres to liquid and assists on the flat upper surface of (1), (2), and liquid assists (1), (2) mouth respectively to draw the transparent PVC flexible pipe (13) that an internal diameter is 0.5mm, external diameter 1.5mm, long 2000mm.Assist (1) to link to each other with the tubule main body by a balance adjustment chamber (5) at left liquid, on the panel (12) directly over balance adjustment chamber (5), be provided with balance adjustment knob (6), available screwdriver turn from the tubule at exit 30mm place.Regulate chamber (5) and make, and adhere at the bottom of the box in the locating rack (14) by the hard transparent organic glass.Liquid assists (1) to be made by gentle matter, thin-walled organic material that tensile strength is big.The other end of two long tubules closes up and respectively connects the nitre rubber pipe (8) of a segment length 20mm, and panel (12) is provided with switching knob (7) directly over the nitre rubber pipe compressing tablet (8), and available hand-screw is moving.Two nitre rubbers pipe (8) other end respectively assists (9) to be connected by the tubule of a segment length 300mm with gas, fill air in gas is assisted, volume 20 * 10 ³Mm ³, by making than the hard organic material.Liquid is assisted in (1), (2) and is filled an amount of colored liquid, and two fluid column faces when its amount should make balance unloaded on the display board are equal and be near the position starting end.Tubule closes up bonding, edge-on coiling mutually and adheres in the lid (11) then the formation display board to leaving from balance adjustment chamber (5) 100mm in the length of closing device nitre rubber pipe (8) 150mm.The used counterweight of balance is in original 1,2,2,5,10,20,20,50,100(unit in the present embodiment: increase by 1.1,1.2,1.2 on basis gram) again, 1.5(unit: four counterweights gram).Its weighing range is 200 grams, and precision 0.1 gram can be estimated 0.01 gram.The weighing accuracy key of capsule formula balance depends on whether two equivalance plate (3) areas are highly equal, and the difference of two equivalance board diameters requires to be not more than 0.005mm in the present embodiment.Before the use, open switching knob (7) earlier, adjustment adjusting knob (6), make in the display board tubule two fluid column faces equal, off switch knob (7) then, on two scales pan (4), add thing or counterweight, after two fluid column faces on the display board are roughly equal, open switching knob (7), go up amount according to careful levelling two dishes of the equal principle of fluid column face again.Weighing finishes back off switch knob (7) and lid (11).

Claims

1, capsule formula balance, it is characterized in that: two pans of a steelyard are positioned over respectively on the two equal hard equivalance plates of area, the equivalance plate adheres to respectively on the two equal liquid capsules of every physical parameter, two round pie liquid capsules are drawn an isometric organic flexible pipe in transparent thin footpath respectively, the two flexible pipe other ends connect conducting by an air bag, be provided with switchgear near two thin diameter tubes the air bag, wherein be connected with a balance regulator near the side liquid capsule thin diameter tube exit, more than device all adheres on the collapsible box body.

2, capsule formula balance according to claim 1 is characterized in that: thin diameter tube near liquid capsule exit near the length the air bag mutually bonding be flat belt-like, edge-on coiling and adhere to the lid inboard.

3, capsule formula balance according to claim 1 and 2, it is characterized in that: the liquid capsule is made by the thin-walled organic material of gentle matter, stretch-proof, in fill an amount of colored liquid, but its amount so that balance when unloaded tubule fluid column face on the lid be in the appropriate location and two fluid column face leveling are as the criterion.

4, according to claim 1, the described capsule formula of claim 2 or claim 3 balance is characterized in that: the used counterweight of balance increases by 1.1,1.2,1.2 on the original basis, 1.5(unit: four counterweights gram).