Watermelon ripeness tester
A kind of device that is used to detect the watermelon maturity and don't damages watermelon.
Existing watermelon proving installation has:
1, in the utility model patent of on Dec 5th, 1 bulletin, be the watermelon tester apparatus (number of patent application: be to constitute 86206727) of the good design of the Xing Zhong of packaged food mechanical investigations institute of Beijing electromechanics Research Institute by acoustical-electrical transducer, recognizer, display, it is the utilization electronic technology, the harmless quality of differentiating watermelon.
2, Shanghai City
semiconductor 21 factories and basic courses department of Shanghai Agricultural College cooperation research and development success a kind of " portable melon and fruit not damaged sugariness analyzer " (being reported on the Wen Hui Daily on August 18th, 1) it be developed into according to phytobiology principle and electronic technology principle.
3, scientist of Japan has developed a kind of watermelon analyzer (report being arranged on July 22nd, 1 " technical market newspaper ") it has been the situation according to sonic propagation, is indicated the sweet ripe degree of watermelon exactly by the electronics display instrument.
Though above-mentioned three kinds of watermelon proving installations all are the sweet ripe degree of nondestructive measurement watermelon, all there is the apparatus structure complexity in they, the problem that cost is high.
The purpose of this utility model provides a kind of maturity that can the nondestructive measurement watermelon, is again measurement mechanism simple in structure, easy to use, with low cost.
The utility model is to develop according to phytobiology principle and physical technique principle.It is by the shell as water container, has faucet, faucet place that the transparent graduated cylinder that has scale is arranged on the shell wall and constitutes as the ripe digital watch of looking into that shows the melon maturity.
Said shell, container that is used for being filled with water exactly, measured watermelon is exactly a water of putting into this container, utilizes the water discharge of watermelon different situations, detects the maturity of watermelon from look into ripe digital watch.Shell is the main body of this maturity detector thus.It can make cylindrical, rectangle or square, and the material of making can adopt fiberglass, plastics, metal, rubber, glass, fluid-tight cloth, wood or bamboo.
Said faucet, it is out perhaps to be arranged on the upper end of shell wall on the wall of shell, perhaps is arranged at the lower end of shell wall.
When faucet is arranged on the lower end of shell wall, be connected with the graduated cylinder of a transparent tubule formula that has scale with a flexible pipe such as plastic tube or rubber tube endpiece faucet, this graduated cylinder places and is parallel to shell perpendicular to horizontal direction, and the upper end of shell wall is fixed in the upper end of graduated cylinder with retaining element.This similar is in linker, and we are referred to as to be communicated with the watermelon maturity detector of type.The tubule of graduated cylinder can adopt the good plastic tube of transparency of transparent glass tube, plexi-glass tubular or hard.
When faucet was arranged on the upper end of shell wall, it was equivalent to the gole in the reservoir, so we claim that it is the spilling water mouth.When in a single day water level exceeded rolling off the production line of this spilling water mouth, water just flowed out from the spilling water mouth.The outlet of spilling water mouth is downward, places a transparent graduated cylinder that has scale in its exit.Graduated cylinder herein preferably adopt bigbore or hydraucone formula this be all to take in graduated cylinder for the ease of the water that will overflow, be unlikely because of water is splashed to the outside, cause measuring error.
In order to see the position of liquid level in the tubule graduated cylinder clearly, have on the surface of scale at it, put the upper and lower transportable magnifier of a slice, reduce measuring error with it.
Saidly look into ripe digital watch.This is the key component of this maturity detector.Show more than 900 numeral on the table, the part that surfaces when having watermelon freely to float in water is called long-pending more than 780 numerals of ball cylinder body.When utilize the said equipment measure each watermelon in water the segment volume and the weight of itself, utilize and to look into ripe digital watch, can learn this watermelon cooking level at once.
What produce looks into ripe digital watch, be attached on the wall of shell, or be embedded on the lid of shell, or stamp is on hardboard.For anti-water-soaked, numeral is fuzzy, is coated with the moistureproof transparent membrane of last layer on the surface of digital watch.Be embedded on the shell lid and stamp on a hardboard, in use, can be hand held in, facilitate consultation.
The utility model has the advantages that:
1, do not damage watermelon, can measure the ripe living degree of watermelon exactly.
2, measurement mechanism is simple in structure, and is with low cost.
3, easy and simple to handle, easy to use, be convenient to promote.
Description of drawings:
The synoptic diagram of Fig. 1, connection type watermelon maturity detector.
1-water (clear tap water), the 2-shell,
3-looks into ripe digital watch, the 4-lid,
The 5-set collar, 6-tubule formula weight tube,
The 7-magnifier, the 8-flexible pipe,
The 9-faucet.
Fig. 2, the watermelon maturity detector synoptic diagram of spilling water mouth is arranged.
10-spilling water mouth, the graduated cylinder of 11-hydraucone formula.
Subordinate list, look into ripe digital watch.(making) according to statistical law.
As shown in Figure 1,
shell 2 is cylindrical watertight containers made of plastic, pours the peace and
quiet tap water 1 of 4000CC into, and the liquid level that tubule formula weight tube is 6 li is raised to scale 4000CC.
(1) No. 1 determined watermelon is put into water, water level rises at once, the liquid level of tubule formula weight tube is raised to scale 7072CC place, subtracts each other for twice: 7072(CC)-4000(CC)=3072(CC) because the proportion of water is 1, the weight that records watermelon so is 3072 grams.
(2) with pointing the part that watermelon is surfaced, promptly be called the segment volume and duck in drink, water level rises again in the shell, and liquid level rises to scale 7210CC place in the tubule formula weight tube, and current liquid level rises to only:
7210(CC)-7072(CC)=138(CC)
Then the segment volume of watermelon is 138(CC)
(3) check ripe digital watch, the first column weight range is played on a left side, see that from top to bottom melon weighs 3072 grams between the
22nd row 3051~3100 grams, sees from left to right at this journey, the second lattice numeral is 138, just the segment volume 138(CC that meets planar survey), look up, see that gauge outfit second row learns that this No. 1 melon is 2 class melons along second lattice, first rower at table is bright, and 2 class melons are wilfully.
Measure the cooking level of No. 2 watermelons, use the watermelon maturity detector of connected vessels type shown in Figure 1 equally, repeat above-mentioned steps:
(1) record the weight 6775(CC of watermelon)-4000(CC)=the 2775(gram)
(2) the segment volume is: 207(CC)=6982(CC)-6775(CC)
(3) check that ripe digital watch melon weighs 2775 grams at the 16th row.Between 2751 grams~2800 grams, in this walked crosswise,
segment volume 207 to the nine
lattice 200 that record are big by 7, and were littler by 7 than the
tenth lattice 214, as seen between two numbers, upwards found second row along nine, ten liang of lattice, learnt that these No. 2 watermelons belong to the melon of nine, ten classes, were ripe.
With the ripe device of survey shown in Figure 2.
(1) tested watermelon is used earlier scale, the good weight of scale.For example No. 3 watermelons that scale is good weigh 2525 grams, put into the shell that is filled with water.
(2) continue to inject clear water in shell, tangent up to the circle of the water surface and spilling
water mouth 10, promptly lucky surface level arrives the lower edge of spilling water mouth, and water will flow and not flow out.
(3) with finger the segment volume is partly ducked in drink, water level raises in the shell, and water flows out from the spilling water mouth, collects the water of outflow with graduated
cylinder 11, learns from the scale of graduated cylinder and flows out 173(CC) water, Here it is, and the segment volume is 173(CC).
(4) check ripe digital watch, melon weighs 2525 grams, first hurdle the
11st row 2501 in table and restrains between~2550 grams, and 173 numeral learns that then No. 3 melons belong to eight, nine class melons between the
8th lattice 171 and 181 liang of numbers of the 9th lattice, be ripe melon.
Measure watermelon again No. 4, use the measuring equipment of Fig. 2 equally, repeat above-mentioned steps, scale gets No. 4 watermelons and weighs 3580 grams in advance, and recording the segment volume is 340(CC), from looking between ripe digital watch the 32nd row 3551~3600 grams, checking in No. 4 melons and belong to 13 classes, is overdone melon.