JPH0714852Y2 - Tea leaf sampling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present application relates to a tea leaf sampling apparatus.

[Conventional technology]

As a tea leaf sampling device, for example, there is a device found in Japanese Patent Application Laid-Open No. 2-105035 developed by the present applicant in the past. This device has a rod (1) that moves intermittently in the reverse transport direction above the rear end of the take-out trough (3) during sampling.
By arranging 4), the bridge phenomenon of tea leaves is prevented.

[Problems to be solved by the device]

Then, as a result of the research conducted by the applicant, the following problem to be solved was found. That is, the sampling device is a device for supplying tea leaves to the measuring device for measuring the properties of the tea leaves. However, when the measuring device performs zero point correction, the supply of tea leaves must be temporarily stopped. I won't. Therefore, the 0-point correction is performed after the tea making process is completed and the tea leaves are taken out from the tea making machine until the next tea leaves are put in. However, the tea making machine such as a leaf making machine or a rough kneading machine that handles high moisture content. Then, since the tea leaves are easily attached to the measuring device, the 0 point is likely to change, and it may be necessary to correct the 0 point during the tea making process. In this case, when the sampling device is stopped, even if the tea leaves are placed on the portion of the sampling device that is inserted into the tea making machine, the tea leaves are not transferred. May be damaged. Although some tea leaves can be removed by the above-mentioned rod (14), it takes time to completely remove the tea leaves, and it becomes impossible to supply a stable sample until then.

Therefore, an object of the present application is to provide a sampling device capable of restarting sampling immediately after stopping sampling during a process.

[Means for Solving the Problems]

In the tea leaf sampling device of the present application, a take-out conveyor is inserted inside the tea making machine, and an opening / closing plate having a width almost equal to that of the taking-out conveyor is arranged above the taking-out conveyor. Attached and connected to the power shifter,
It is characterized in that the lower side of the opening / closing plate can be switched between a position in contact with the inner wall of the tea making machine and a position almost above the rear end of the take-out conveyor.

[Action]

During sampling, the lower side of the opening / closing plate is placed close to the inner wall of the tea making machine. At this time, the opening / closing plate does not hinder the sampling of tea leaves, and the tea leaves are placed on the take-out conveyor and taken out of the machine.

When sampling is stopped, the power shifter works to move the lower side of the open / close plate to a position almost above the rear end of the takeout conveyor. Then, the tea leaves are prevented from falling onto the take-out conveyor by the opening / closing plate, so that a large amount of tea leaves are not loaded on the take-out conveyor.

〔Example〕

An apparatus in which the present application is applied to a moisture meter of a tea making machine will be described below.

Reference numeral 1 is a conventionally known leaf cutter, 2 is a frame, 3 is a side plate, and 4 is a main shaft. Reference numeral 5 denotes a moisture meter arranged on one side of the leaf cutter 1, and has a takeout conveyor 6, a measurement conveyor 7, and a return conveyor 8. A vibrating conveyor is used for each of these conveyors 6, 7 and 8 as an example, and a trough 9 is supported on a hollow frame 11 by a leaf spring 10 and a vibrator 12 is connected to a rear end of the trough 9. It has substantially the same structure as the vibration conveyor disclosed in JP-A-2-67229.

The take-out conveyor 6 has its rear end inserted into the machine through the take-out hole 13 and is attached to the stay 14 fixed to the frame 2 by the stay 14
It is attached with a thumbscrew 16 through a long hole 15 formed in the. Therefore, when the thumbscrew 16 is loosened and the handle 17 attached to the vibrator 12 is pulled in the direction of arrow A, the entire take-out conveyor 6 is pulled out of the machine. This is a function to prevent the moisture meter from getting wet with water through the take-out conveyor when cleaning the inside of the machine.Furthermore, if the shutter 19 guided by the rail 18 is closed and the take-out hole 13 is closed, the waterproof effect will be perfect. become. 20 is a breathable shatterproof cover that covers the upper portion of the trough 9.

The portal frame 21 is attached to the hollow frame 11 'of the measuring conveyor 7, and the portal frame 21 is held by the load cell 22, and the weight of the whole is measured. An air cylinder 23 is attached to the rear end of the hollow frame 11 ', and the tip of its piston rod 24 is
Cleaning tool 25 having a width substantially equal to the width of the trough 9'of the measurement conveyor 7
Can be installed. When the piston rod 24 is shortened, the cleaning tool 25 is retracted to the outside of the transport path of the trough 9 ', and when the piston rod 24 is extended, the cleaning tool 25 approaches the transport path and cuts the transport path vertically, so that the trough 9' The tea leaves adhering to the transport surface are removed. In this example, the cleaning tool is a rectangular plastic material, but may be a brush. Numeral 26 is a cushioning cloth screwed to the trough 9'to reduce the impact when the tea leaves supplied from the take-out conveyor 6 fall to the trough 9'of the measuring conveyor 7.

Reference numerals 27 and 28 denote microwave transmitters and receivers, which are arranged to face each other with the trough 9'of the measurement conveyor interposed therebetween. The microwave transmitters / receivers 27 and 28 and the load cell 22 are held by a stand (not shown) independent of the leaf cutter 1 to prevent the precision of the leaf cutter 1 from being deteriorated due to vibration.

Reference numeral 29 denotes an opening / closing plate which is a characteristic structure of the present application, and is rotatably attached to the inner wall of the tea making machine above the trough 9 of the take-out conveyor by a hinge 30. The bracket 31 penetrates the side plate 2. Reference numeral 32 is an air cylinder as a power shifter, which is rotatably attached to the outer surface of the side plate by a stay 33, and the bracket 31 is rotatably attached to the tip of a piston rod 34 thereof.

Therefore, first, the zero point correction is performed before the tea leaves are put into the leaf-driving machine 1. That is, the initial weight G0 of the load cell 22 and the initial energy M0 of the microwave receiver 27 when tea leaves are not placed on the measurement conveyor are measured and stored. After that, the tea leaves are put into the leaf-driving machine 1 to perform the leaf-beating process, the piston rod 34 of the air cylinder 32 is reduced, and the vibrator 12 is operated while the opening / closing plate 29 is in contact with the inner wall, and the leaf is taken out. The conveyor 6, the measurement conveyor 7, and the return conveyor 8 are operated. Then, the tea leaves inside the machine fell to the rear end of the trough 6, were taken out of the machine, and were supplied to the measuring conveyor 7, where the weight g of the whole was measured by the load cell 22 and attenuated by the tea leaves. The microwave energy m is measured. The actual weight of tea leaves is (g-
G0), and the decrease amount of microwave energy is (M0
-M), these values are substituted into the following equation to obtain the water content W of tea leaves.

W = K1 x (M0-m) ÷ (g-G0) + K2 (where K1 and K2 are constants obtained by experiments) The water content W calculated by the above formula is used to adjust the hot air temperature and hot air volume. It

By the way, when the tea leaves adhere to the measurement conveyor, the zero point fluctuates, and the measurement accuracy passes. Therefore, in this example, the sampling device is stopped every 5 minutes to perform the zero point correction even during the leaf-beating process. To this end, first, the piston rod 34 of the air cylinder 32 is extended, and the lower end of the opening / closing plate 29 is switched to a position substantially above the rear end of the take-out conveyor 6 as shown by the chain double-dashed line in FIG. Then, the tea leaves are blocked by the opening / closing plate 29 and cannot fall onto the take-out conveyor 6.
After that, the take-out conveyor 6 and the measuring conveyor 7 are sequentially stopped, the piston rod 24 of the air cylinder 23 is expanded and contracted, and the tea leaves adhering to the conveyance surface of the trough 9'are removed by the cleaning tool 25. Then, only the measurement conveyor 7 is operated again and the zero point correction is performed in the same manner as described above. Note that the measurement conveyor 7 may be stopped during the zero point correction. When the 0 point correction is completed, the piston rod 34 of the air cylinder 32 is reduced again, and the opening / closing plate
If 29 is brought into contact with the inner wall and the take-out conveyor 6 is operated, sampling can be restarted immediately.

As the power shifter, a motor cylinder, a solenoid or the like can be used instead of the air cylinder.

〔effect〕

As described above, the tea leaf sampling device of the present application can prevent a large amount of tea leaves from being stacked on the take-out conveyor when sampling is stopped, and therefore, it is possible to restart sampling immediately after that, and also the device is damaged. Can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of the embodiment apparatus, and FIG. 2 is a side view of the same. 1 ... Tea making machine (leaf cutter), 6 ... Take-out conveyor, 29 ... Open / close plate, 32 ... Power shifter (air cylinder)

Claims (1)

[Scope of utility model registration request] 1. A tea take-out conveyor is inserted inside a tea making machine, and an opening / closing plate having a width substantially equal to that of the take-out conveyor is arranged above the take-out conveyor. A tea leaf sampling device that is connected to a shifter and can switch the lower side of the open / close plate between the position where it abuts the inner wall of the tea making machine and the position that is almost above the rear end of the take-out conveyor.