JPH0970257A - Measurement of water content (roinnritsu) of picked-up leaves and equipment therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and equipment for measuring the proportion of the moisture to be lost as dew drops from picked tea leaves by centrifuging picked tea leaves having rain drops or morning dew drops on their surfaces and exactly and rapidly calculating the water proportion to be lost as dew drops from the difference in weight between before and after the centrifugation. SOLUTION: In this measurement of the proportion of the moisture to be lost as dew drops, a part of picked tea leaves are sampled and centrifuged to calculate the water proportion to be lost as dew drops from the weight difference between before and after the centrifugation. The centrifugal dehydration of tea leaves A can set the proportion to be lost to a certain value after centrifugation, regardless of the proportion to be lost when they are carried in, and the proportion to be lost when carried in can be inductively, exactly and promptly calculated from the weights of tea leaves before and after the centrifugation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for measuring the dew rate, which is the weight percentage of tea leaves in the total weight including water, when receiving plucked tea leaves having water such as raindrops and morning dew attached to the surface thereof in a tea factory or the like. The method and the device thereof.

[0002]

BACKGROUND OF THE INVENTION In a conventional tea factory or the like, when accepting plucked tea leaves on the surface of which water such as raindrops or morning dew adheres,
The dew rate is determined by the evaluator's feeling. For this reason, the evaluation is not reproducible, and the results of the evaluation may change greatly depending on the testimony of the assessor. Against this background, a device such as Japanese Patent Application Laid-Open No. 7-107909 “Measuring method for dew extraction of fresh tea leaves” has been proposed. This is to evaporate water such as raindrops and morning dew by blowing dry air onto plucked tea leaves that are wet with raindrops and morning dew, and calculate the dew ratio from the weight before and after drying. However, raindrops caused by blowing dry air,
Since it takes about 5 minutes to evaporate water such as morning dew, it takes several minutes to wait in line during the peak season such as the tea season or the rainy season, which shortens the dew rate measurement time. Was desired.

[0003]

Against this background, the present inventor shortens the hot air drying treatment time performed in the next stage by centrifugally dehydrating the plucked tea leaves on the surface of which water such as raindrops and morning dew adheres. However, the dew rate can be measured accurately and quickly from the change in the weight value before the centrifugal dehydration treatment and after the evaporation of the water adhering to the surface of the tea leaves by the hot air drying treatment. The technical problem is to develop a novel method for measuring the dew rate of plucked tea leaves and an apparatus therefor capable of accurately and rapidly calculating the dew rate from changes in weight values before and after.

[0004]

The method for measuring the dew rate of plucked tea leaves according to claim 1, wherein a part of the plucked tea leaves is taken out as a sample, and this sample is subjected to centrifugal dehydration to extract the dew rate from the sample weight before and after centrifugal dehydration. Is calculated. According to this invention, by centrifugally dehydrating tea leaves,
The dew rate of centrifugally dehydrated tea leaves can be set to a constant value regardless of the dew rate of tea leaves at the time of delivery, and the dew rate of plucked tea leaves at the time of delivery from the weight before and after centrifugal dehydration is inductive. It can be calculated accurately and quickly.

In addition to the above requirements, the method for measuring the dew rate of plucked tea leaves according to claim 2 is characterized in that the sample after centrifugal dehydration is dried with hot air, and the sample weight before centrifugal dehydration and the sample weight after hot air drying are used. The feature is that the dew rate is calculated. According to the present invention, by centrifuging the tea leaves, the dew rate after centrifugal dewatering can be set to a constant value regardless of the dew rate of the tea leaves at the time of being carried in. The time required for can be shortened.
As a result, the dew rate of the tea leaves at the time of loading can be accurately and quickly calculated directly from the weight of the tea leaves before centrifugal dehydration and the weight of the tea leaves after hot air drying.

Furthermore, in addition to the above-mentioned requirements, the method for measuring the dew rate of plucked tea leaves according to claim 3 is characterized in that, in the hot-air drying of the sample, the blowing direction of the hot air sent to the sample is changed at any time. And According to the present invention, the blowing direction of the hot air sent to the tea leaves is changed at any time, so that the tea leaves can be uniformly dried in a dispersed state without being stagnated in one place.

Further, the dew rate measuring device for plucked tea leaves according to claim 4 is: a centrifugal dehydrator having a dehydrating basket attached to a rotating shaft of a motor; and a hot air dryer having a burner and a fan.
And a weighing scale, and the working part of each of these devices is characterized by a structure for receiving a drainage basket. According to the present invention, the plucking tea leaf dew rate measuring device comprises a centrifugal dehydrator and a hot air dryer, so by removing water such as raindrops and morning dew by rotating the dehydration basket, the hot air dryer is used. The tea leaves can be dried in a short time. Further, since it has a weighing scale, it is possible to measure data for calculating the dew rate. Furthermore, since the action part of each device has a structure for receiving the drainage basket, the tea leaves can be transported while being placed in the drainage basket, and the dew rate measurement work can be performed smoothly.

Further, in the dew rate measuring device for plucked tea leaves according to claim 5, in addition to the requirement of claim 4, the hot air dryer is provided with an air guide part for the blowing part of the hot air chamber,
It is characterized in that it is provided with a drive mechanism for this air guide section. According to this invention, the hot air dryer is provided with the air guide portion for the blowout portion of the hot air chamber and the drive mechanism for the air guide portion. The blowing direction can be changed at any time, and the tea leaves can be uniformly dried in a dispersed state without being stagnated in one place.

Furthermore, the dew extraction rate measuring device for plucked tea leaves according to claim 6 is characterized in that, in addition to the requirements according to claim 4 or 5, a plurality of hot air dryers are installed side by side. According to the present invention, since a plurality of hot air dryers are provided side by side, the tea leaves taken out from the centrifugal dehydrator can be sequentially charged into the hot air dryer and efficiently processed. According to the inventions described in these claims, the above-mentioned problem is solved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A plucked tea leaf dew rate measuring device according to the present invention will be described below with reference to the drawings, and a method for measuring the plucked tea leaf dew rate according to the present invention will be described together with the operating state of the device. The dew rate measuring device 1 comprises a dehydrator main body 2, a weight scale 3 attached to the dehydrator main body 2, and an operation panel unit 4, and is installed at a carry-in place in a tea factory or the like as an example. When a part of the plucked tea leaves carried into the tea factory etc. is taken out as a sample and the sample tea leaves A are applied to the dew rate measuring device 1, the tea leaves A are handled while being stored in the drainage basket 5.

First, the dehydrator main body 2 will be described. In the case 10, this is one centrifugal dehydrator 11 as an example.
And four hot air dryers 12 are incorporated. The four hot air dryers 12 are used here because the time required for the treatment of the tea leaves A by the hot air dryer 12 is about four times the time required for the treatment by the centrifugal dehydrator 11. This is because it operates well. The centrifugal dehydrator 11 and the hot air dryer 12 will be described below.

The centrifugal dehydrator 11 is, as shown in FIG.
Attach the support plate 13a to the upper part of the machine frame F,
The motor M ₁ is attached to the support plate 13a in a suspended state. The support plate 13a is floatingly mounted on the upper surface of the support plate 13a via a shock absorber-shaped mount piece 14 so-called rubber mount.
b. Joint 1 for support plate 13b
6 is provided, and the motor M is provided at the lower end of the joint 16.
The rotating shaft ₁ is connected, and the dehydration basket 15 is connected to the upper end through a shaft 15c. Further, an outer box 17 is provided so as to surround the dehydration basket 15 and further divides the casing 10.

A drainage hole 1 is provided on the outer circumference of the dehydration basket 15.
5a is bored, and a flange 15 is provided on the upper part along the outer periphery.
b is provided. Furthermore, the drain port 1 is provided on the bottom of the outer box 17.
8 is provided, and a hose or the like is appropriately connected to guide water to an external drain. Furthermore, the outer lid 19 is provided so as to be openable and closable so as to close the opening above the outer box 17, that is, the opening on the upper surface of the housing 10. Incidentally, a limit switch for detecting that the outer lid 19 is closed may be provided so that the motor M ₁ cannot be started when the outer lid 19 is opened. Incidentally, in this embodiment, the diameter of the dehydration basket 15 is 230 m.
m, and the rotation speed of the motor M _{1 in} a steady state is 800 rpm.

The water draining basket 5 shown in FIGS. 3 to 5 will now be described. The drainage basket 5 has a cylindrical net 5 having a bottom portion with respect to a frame 51 in which a metal wire rod is formed in a substantially cylindrical cage form.
2 is stretched, and the frame 51 further comprises a circumferential flange 53 at the upper end portion. Further, the drainage basket 5 is provided with a lid 55, which has a net 57 stretched on the inner side of a circumferential lid frame 56, and a grip portion 58, a hinge 59 and a hook with respect to the lid frame 56. 59a is attached, and a stopper 59b that engages with the hook 59a is attached to the flange 53. The lid 55 is rotatably attached to the flange 53 by a hinge 59, and is fixed by a hook 59a so as to close the upper end portion of the drainage basket 5.

The drainage basket 5 for the centrifugal dehydrator 11
As a structure for receiving the above, as shown in an enlarged view in FIG. 4, with respect to the flange 15b provided at the upper end of the dehydration basket 15,
The flange 53 of the drainage basket 5 is locked. Incidentally, in the apparatus of this embodiment, the centrifugal dehydrator 11
Although the dehydration basket 15 and the drainage basket 5 in FIG. 1 rotate together, a proper engagement mechanism may be provided to prevent slippage of both.

Next, the hot air dryer 12 will be described. As shown in FIG. 5, this is equipped with a cylindrical drying tank 20 at the lower part of the opening provided on the upper surface of the housing 10, and further includes a drying tank 2
It comprises a hot air chamber 21 connected to the lower side of 0. A fan 22 is provided inside the hot air chamber 21, and a burner 23 is connected to one side of the hot air chamber 21.
A driven pulley 24a provided for the rotational axis of the fan 22, a drive pulley 24b provided for the shaft of the motor M ₂ is further provided separately winding a belt 24c between these drive pulley 24b and the driven pulley 24a Turn.

Further, as shown enlarged in FIG. 6, the hot air chamber 2
A baffle plate 25 serving as a baffle section is provided above the unit 1. For example, the baffle plate 25 is formed by obliquely raising side plates 25b from each side with respect to a square bottom plate 25a. The side plates 25b facing each other have the same shape, and the pair of side plates 25b is set longer than the other pair of side plates 25b. Side plate 25 on the shorter side
For b, the bracket 26 is fixed and the bracket 26 is fixed to the rotating shaft 27a. Rotating shaft 2
7a is supported by a bearing 27b provided at the bottom of the drying tank 20, and one end of the driven link 28a is fixed to the end. One end of a drive link 28b is rotatably connected to the other end of the driven link 28a, and the other end of the drive link 28b is connected to a pin provided in the vicinity of the outer circumference of a disk 29 mounted on the rotating shaft of the motor M _3. A crank mechanism is formed by being rotatably connected to the crank mechanism. Incidentally, instead of providing the motor M ₃ , a transmission may be appropriately connected to the motor M ₂ so as to serve as a drive source for the disc 29.

Then, the air in the hot air chamber 21 heated by the burner 23 is sent to the drying tank 20 by the fan 22. Incidentally, as the hot air dryer 12, various other known types can be used. Draining basket 5
As a structure for receiving the liquid, as shown in an enlarged view in FIG. 5, the edge of the casing 10 above the drying tank 20 or the drying tank 20
The flange 53 of the drainage basket 5 is engaged with a metal fitting or the like provided on the upper portion.

A mechanism for rotating the drainage basket 5 may be provided. As shown in FIG. 7, this mechanism has a shortened drying tank 20 and a cylindrical basket receiver 60 surrounded by a partition wall 20a on the upper portion thereof. An annular flange 61 is provided at the lower end of the car receiver 60, and a free pulley 62 and two driven pulleys 63 are attached to the partition wall 20a in a loosely fitted state with the flange 61 at approximately 120 ° intervals.
A pulley 64 is provided for each of the shafts of the two driven pulleys 63, a motor M ₄ is fixed to the inside of the partition wall 20a, and a pulley 65 and the pulley 64 provided for this output shaft. A belt 66 is stretched between and. Then, the car receiver 60 is rotated by driving the motor M ₄ . Incidentally, instead of providing the motor M ₄ , a drive may be used by appropriately connecting a transmission to the motor M ₂ or M ₃ . The flange 61 has an inner diameter smaller than that of the car receiver 60. When the water draining car 5 is put in the car receiver 60, the water draining car 5 is placed on the flange 61. It becomes a state. In addition to this, as a structure of the mechanism for rotating the drainage basket 5, an appropriate structure such as a turntable system which is made of a net or the like and has air permeability can be adopted.

A load cell 67 may be provided between the partition wall 20a and the casing 10 so that the weight change of the tea leaves A in the drainage basket 5 can be measured and this value can be transmitted to the microcomputer 40.

Next, the weight scale 3 provided along with the dehydrator main body 2 will be described. This is a box 3 as shown in FIG.
1, a load cell 32 is provided inside, and a rectangular mounting table 33, which stands up on all sides, is provided for this input section. The four sides of the mounting table 33 are set up in order to measure the total weight including the water droplets (water content) attached to the tea leaves A as described later. The output of the load cell 32 is connected to the input of the microcomputer 40 included in the operation panel unit 4 described later. Incidentally, the load cell 32 may be any other device as long as it is a converter that outputs an electric signal proportional to the load.

Next, the operation panel unit 4 will be described.
As shown in FIG. 1, this device has a microcomputer 40 inside a box 41, and further has a display 42 such as an LCD, a timer switch 43, and other appropriate switches for the board surface. The operation panel unit 4 is installed in a place where it is easy to operate the housing 10 as appropriate.

The plucked tea leaf dew rate measuring device 1 of the present invention has the above-mentioned configuration. A method for measuring the plucked tea leaf dew rate using this device will be described below. When accepting plucked tea leaves having water such as raindrops and morning dew on the surface at tea factories, a part of the plucked tea leaves (300 g as an example) is taken out as a sample, and this sample tea leaf A is put into a draining basket 5. , The hook 59a and the stopper 59b are engaged with each other so that the lid 55 closes the upper end of the drainage basket 5.

Next, this is placed on the placing table 33 in the weight scale 3, and the weight detection value of the water content and the tea leaf A, from which the weight of the drainage basket 5 at this point is subtracted, is set as the input weight α.
The value of this input weight α is the microcomputer 4 in the operation panel unit 4.
0. At this time, be careful not to spill the water adhering to the tea leaves A to any place other than the mounting table 33. In addition, in preparation for the next use, the mounting table 33 after use is thoroughly dried by wiping with a cloth.

Next, as shown in FIGS. 1 and 2, the drainage basket 5
Is inserted into the flange 15b provided at the upper end of the dehydration basket 15 of the centrifugal dehydrator 11 so that the flange 53 is locked, and the outer lid 19 is closed. Then, set the timer switch 43 in the operation panel unit 4 to an appropriate numerical value (2
(0 seconds to 40 seconds), when the motor M ₁ is driven to rotate the dehydration basket 15, water droplets adhering to the surface of the tea leaf A flow out from the drain hole 15a due to centrifugal force, and are discharged from the drain port 18 to the outside. Is discharged.

Next, after the set time has elapsed, the driving of the motor M ₁ is stopped, or a braking device is appropriately provided to positively stop the rotation of the dehydration basket 15, and then the outer lid 19 is opened to dehydrate the drainage basket 5. It is taken out of the car 15 and installed at the upper end of the drying tank 20 in the hot air dryer 12 so that the flange 53 of the drainage car 5 is locked. When the timer switch 43 in the operation panel unit 4 is set to an appropriate value (about 1 minute 30 seconds to 2 minutes 30 seconds), the burner 23 is ignited to supply hot air into the hot air chamber 21 and the motor M ₂ is driven. As a result, the fan 22 is rotated, and the motor M ₃ is driven to rotate the rotating shaft 27a within a range of 120 ° as an example. Therefore, the baffle plate 25 connected to the rotating shaft 27a is tilted at any time, The hot air in the hot air chamber 21 was sent into the drying tank 20 so that the blowing direction was changed at any time, and the tea leaves A in the drainage basket 5 installed in the drying tank 20 were dispersed without being stagnated in one place. Dry with hot air.

Thereafter, after the set time has elapsed, the motor M ₂ and the burner 23 are stopped, and then the draining basket 5 is placed in the hot air dryer 12
And remove it from the weighing platform 3 again.
3 and the detected value at this time, that is, the weight of the tea leaf A only after subtracting the weight of the draining basket 5 is taken as the tea leaf weight γ.
The value of this tea leaf weight γ is the microcomputer 4 in the operation panel unit 4.
0. The drying by the hot air dryer 12 means
This is performed in order to evaporate the water adhering to the surface of the tea leaf A, and it is preferable that the surface of the dried tea leaf A that has been plucked during fine weather is close to the unwetted state.

The input weight α and the tea leaf weight γ are processed by the microcomputer 40. The actually measured dew rate η of the tea leaf A can be obtained by the formula (tea leaf weight γ / input weight α) × 100 and is displayed on the display 42. Based on this value, the total weight of the plucked tea leaves to which the sample belongs excluding water adhering to the surface is calculated, and slip processing and the like are performed. For this reason, the operation panel unit 4 may be provided with a printer or the like to add a slip issuing function. By the way, the time required for the drying process by the hot air dryer 12 is the centrifugal dehydrator 11
5 minutes ~ compared to the case without centrifugal dehydration
It can be shortened by about 10 minutes, and the time required to measure the actually measured dew rate η is about 1 minute 50 seconds to 3 minutes 10 seconds, which is a short time.

Next, a method for measuring the dew rate of the plucked tea leaves using only the centrifugal dehydrator 11 and the weight scale 3 will be described. First, a part of plucked tea leaves (as an example, 3
00g) is taken out as a sample, the tea leaf A which is a sample is put into the draining basket 5, and the lid 55 closes the upper end of the draining basket 5 by the hook 59a.

Next, this is placed on the placing table 33 in the weight scale 3, and the weight detection value of the water content and the tea leaf A, which is obtained by subtracting the weight of the drainage basket 5 at this point, is set as the input weight α.
The value of this input weight α is the microcomputer 4 in the operation panel unit 4.
0. At this time, be careful not to spill the water adhering to the tea leaves A to any place other than the mounting table 33. In addition, in preparation for the next use, the mounting table 33 after use is thoroughly dried by wiping with a cloth.

Next, as shown in FIG. 3, the drainage basket 5 has a flange 15b provided at the upper end of the dehydration basket 15 in the centrifugal dehydrator 11 with respect to the flange 5 of the drainage basket 5.
3 is inserted so as to be locked, and the outer lid 19 is closed. Then, when the timer switch 43 in the operation panel unit 4 is set to an appropriate value (20 seconds to 40 seconds) and the motor M ₁ is driven to rotate the dehydration basket 15, water drops flow out from the drain hole 15a by centrifugal force. Is discharged to the outside through the discharge port 18. Next, after the lapse of a set time, after the driving of the motor M ₁ is stopped, or after a suitable braking device is provided to positively stop the rotation of the dehydration basket 15, the outer lid 19 is opened to remove the drainage basket 5 from the dehydration basket 15. The weight is taken out and placed on the mounting table 33 in the weight scale 3, and the detected value at this time, that is, the weight of the tea leaf A having a slight amount of water adhering to the surface after dehydration is taken as the dehydrated tea leaf weight β. The value of the dehydrated tea leaf weight β is set to be the value obtained by subtracting the weight of the drainage basket 5 and transmitted to the microcomputer 40 in the operation panel unit 4.

Here, the input weight α and the dehydrated tea leaf weight β
Will be described. Table 1 shows that the input weight α of 23 kinds of samples whose dew rates were 70%, 80%, 90%, 95%, and 99% by spraying water on the tea leaves A having no water on the surface. And the tea leaf weight γ, the dehydrated tea leaf weight β was measured, and the dew rate δ of the dehydrated tea leaf and the calculated dew rate ζ were calculated. Here, the tea leaf weight γ is used as basic data (reference data). The dew rate δ of dehydrated tea leaves is the dew rate of tea leaves A having a slight amount of water adhering to the surface after dehydration, and is expressed by the formula (tea weight γ /
Dehydrated tea leaf weight β) × 100, and as shown in Table 1, the average value of 23 kinds of samples is 96.9%.
Therefore, the value does not vary evenly regardless of the dew rate of the sample. Therefore, assuming that the dew rate δ of dehydrated tea leaves is 96.9%, the calculated tea leaf weight ε, which is the weight of the tea leaves A to which water is not attached, can be approximated by the formula dehydrated tea leaf weight β × 0.969. it can. Further, a dew rate calculation value ζ, which is an approximate value, can be obtained from the input weight α and the calculated tea leaf weight value ε by the formula (calculated tea leaf weight value ε / input weight α) × 100.

[0033]

[Table 1]

In Table 2, the calculated dew rate ζ and
The error from the measured dew rate η obtained from the input weight α and the tea leaf weight γ is highly accurate to about ± 3%, and the dew rate δ of dehydrated tea leaves is δ.
Indicates a constant value regardless of the dew rate. Further, by determining the value assumed as the dew rate δ of dehydrated tea leaves with more samples, a more accurate dew rate calculation value ζ can be obtained.

[0035]

[Table 2]

Then, the microcomputer 40 processes the measured value and displays it on the display 42, and based on this value, the total weight of the plucked tea leaf to which the sample tea leaf A belongs excluding water adhering to the entire surface is calculated. , Process slips, etc. Incidentally, in the centrifugal dehydrator 11 of the present embodiment, 300
When handling 10 g of tea leaf A, the dew rate δ of the dehydrated tea leaf can be set to 96.9% by operating for about 20 to 40 seconds, and even if the dehydration treatment is performed for a longer period of time, the moisture content is more than that. Removal cannot be expected. Thus, it takes only a very short time of about 1 minute to obtain the calculated dew rate ζ.

The actually measured dew rate η or the calculated dew rate ζ obtained as described above can also be used as control data in each process in the tea processing line, such as a fresh leaf management process and a steaming process.

In addition, since the definition of the dew rate is defined as the weight percentage of water in the total weight including water such as raindrops and morning dew, the calculation formula stored in the microcomputer 40 is appropriately changed in such an area. It shall be.

[0039]

Other Embodiments The dew rate measuring device 1 of the present invention has the above-described construction as a basic embodiment, but has the following modes based on the technical idea of the present invention. You can also First, the load cell 32 and the like may be provided below the housing 10 so that the weight change of the entire dew rate measuring device 1 can be measured. A load cell 32 or the like may be provided below each of the centrifugal dehydrator 11 or the hot air dryer 12 or the dehydration basket 15 or the drying tank 20 so that the weight change thereof can be measured.

Furthermore, the centrifugal dehydrator 11 and the hot air dryer 1
2 may be integrated with each other, and as an example, as shown in a skeleton in FIG. 8, the outer box 17 is placed in a horizontal state with the upper portion of the machine frame F of the centrifugal dehydrator 11 as a rotation axis. It is configured to be rotatable, and in this state, the drying tank 20 of the hot air dryer 12 is connected to the upper opening of the outer box 17. With such a configuration, it is possible to omit operations such as transferring the drainage basket 5.

As another form of the baffle plate 25,
A large number of flaps may be provided in a vertical state inside the rectangular frame, and an appropriate shape according to the flow path of the hot air formed in the drying tank 20 may be formed by inclining each flap from the vertical state. It can be taken.

As another form of the hot air dryer 12, hot air may be supplied to a plurality of drying tanks 20 from a single hot air chamber 21. A structure may be adopted in which the path is formed and the path is opened and closed as appropriate.

[0043]

According to the first aspect of the present invention, by centrifuging and dehydrating the tea leaves A, the dew rate after centrifugal dewatering is kept constant regardless of the dew rate of the tea leaves A at the time of loading. In addition, the dew rate of the tea leaves A at the time of being loaded from the weight before and after the centrifugal dehydration can be inductively measured accurately and quickly.

According to the invention of claim 2, the tea leaves A
By performing centrifugal dehydration, the dew rate after centrifugal dehydration can be made to be a constant value regardless of the dew rate of the tea leaves A at the time of being carried in, thus shortening the time required for the next hot-air drying step. be able to. As a result, the dew rate of the tea leaves A at the time of being carried in can be accurately and quickly measured directly from the weight of the tea leaves A before centrifugal dehydration and the weight of the tea leaves A after hot air drying.

According to the invention of claim 3, the tea leaves A
Since the blowing direction of the hot air sent to is changed from time to time, the tea leaves A can be uniformly dried in a dispersed state without being stagnated in one place. Therefore, the hot air drying process can be efficiently performed in a short time.

Further, according to the invention as set forth in claim 4, since the dew rate measuring device 1 for plucked tea leaves comprises a centrifugal dehydrator 11 and a hot air dryer 12, rotation of the dehydration basket 15 causes raindrops and morning dew. By removing water such as
The tea leaf A can be dried in a short time. Further, since the weighing machine 3 is provided, the data for calculating the dew rate can be measured. Furthermore, since the action part of each device has a structure for receiving the drainage basket 5, the tea leaves A can be conveyed while being put in the drainage basket 5, and the dew rate measurement work can be performed smoothly.

Further, according to the invention of claim 5, the hot air dryer 12 is provided with the air guide plate 25 with respect to the blowing portion of the hot air chamber 20.
Since it is equipped with a drive mechanism for this air guide section, the operating direction of the air guide plate 25 can be changed to change the air blowing direction of the hot air at any time, and the tea leaves A can be kept in one place. , Can be dried evenly in a dispersed state.

Further, according to the invention described in claim 6, since a plurality of hot air dryers 12 are provided side by side, the centrifugal dehydrator 1
The tea leaves A taken out from No. 1 can be sequentially charged into the hot air dryer 12 and efficiently treated.

As a result, raindrops in tea factories,
When receiving plucked tea leaves that have become wet with morning dew, the deliverers do not have to wait in line even during the peak season, such as the first tea season, or during the rainy season, and the workability of both the tea factory and the recipients (tea leaf farmers) is improved. Is improved.

[Brief description of drawings]

FIG. 1 is a front view showing a dew rate measuring device for plucked tea leaves according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a vertical sectional front view showing an enlarged centrifugal dehydrator.

FIG. 4 is a vertical cross-sectional side view showing the vicinity of the upper opening in a larger scale.

FIG. 5 is a vertical sectional front view showing an enlarged hot air dryer.

FIG. 6 is a vertical sectional front view showing the same air guide section and its drive mechanism, a vertical sectional front view showing an enlarged upper part of the figure, and a side view of the blower section.

7A and 7B are a plan view and a vertical sectional front view showing a rotating mechanism of a drainage basket in a hot air dryer.

FIG. 8 is a skeletal front view showing an example of a configuration in which a centrifugal dehydrator and a hot air dryer are integrated.

[Explanation of symbols]

1 Dew rate measuring device 2 Dehydrator main body 3 Weight scale 4 Operation panel unit 5 Draining basket 10 Casing 11 Centrifugal dehydrator 12 Hot air dryer 13a Support plate 13b Support plate 14 Mount piece 15 Dehydration basket 15a Drain hole 15b Flange 15c Shaft 16 Joint 17 Outer box 18 Discharge port 19 Outer lid 20 Drying tank 20a Partition wall 21 Hot air chamber 22 Fan 23 Burner 24a Driven pulley 24b Drive pulley 24c Belt 25 Baffle plate 25a Bottom plate 25b Side plate 26 Bracket 27a Rotating shaft 27b Bearing 28a Driven link 28b Drive link 29 Disc 31 Box body 32 Load cell 33 Mounting table 40 Microcomputer 41 Box body 42 Display 43 Timer switch 51 Frame 52 Net 53 Flange 55 Lid 56 Lid frame 57 Net 58 Grip 59 Hinge 5 a hook 59b clasp 60 car receives 61 the flange 62 free pulley 63 driven pulley 64 pulley 65 pulley 66 belt 67 load cell A tea M ₁ motor M ₂ motor M ₃ motor M ₄ Motor F machine frame

Claims (6)

[Claims] 1. A method for measuring the dew rate of plucked tea leaves, wherein a part of the plucked tea leaves is taken out as a sample, and this sample is subjected to centrifugal dehydration to calculate the dew rate from the sample weight before and after centrifugal dehydration. 2. The plucked tea leaves according to claim 1, wherein the sample after the centrifugal dehydration is dried with hot air, and the dew rate is calculated from the sample weight before centrifugal dehydration and the sample weight after hot air drying. Dew rate measurement method. 3. When hot-drying the sample,
The method for measuring the dew rate of plucked tea leaves according to claim 1 or 2, wherein the blowing direction of the hot air sent to the sample is changed at any time. 4. A centrifugal dehydrator in which a dehydrating basket is attached to a rotating shaft of a motor, a hot air dryer including a burner and a fan, and a weighing scale, and the operating portion of each of these devices has a structure for receiving a draining basket. An apparatus for measuring the dew rate of plucked tea leaves, which is characterized by being present. 5. The dew of plucked tea leaves according to claim 4, wherein the hot-air dryer is provided with an air guide part for the blowing part of the hot air chamber and a drive mechanism for the air guide part. Lead measuring device. 6. The dew rate measuring device for plucked tea leaves according to claim 4, wherein a plurality of hot air dryers are provided side by side.