JP2503226Y2 - Pressure detection device for whitening room of grain mill - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pressure detection device for a whitening chamber of a grain refiner capable of detecting the pressure of grains during whitening in a whitening chamber containing whitening rolls. .

[Prior Art] Conventionally, in a grain refiner constituted by installing a compression plate outside the outlet of a whitening chamber containing whitening rolls, as shown in FIG. Is provided with a compression plate 4 on one end side of a bell crank type supporting rod 8 pivotally supported at the center, and a weight 9 is movably mounted on the other end side of the supporting rod 8 so that the weight can be adjusted. 5 As shown in FIG.
While freely fitting the support arm 10 of the above into the fixed support rod 11,
It has a structure in which a pressure adjusting spring 13 which can be adjusted by a knob 12 which can be moved and adjusted is fitted to a support rod 11, and the pressure is adjusted by a compression plate 4 thereof, and the opening degree of a shutter provided on the entrance side of the polishing chamber 2 is adjusted. It became possible to adjust the flow rate by adjusting the flow rate.

[Problems to be Solved by the Invention] However, in such a pressure adjusting means,
In the case shown in the figure, from the weight of the weight and its mounting position, the initial setting value of the pressure before the start of operation can be easily known,
Even the pressure generated by the start of operation and the flow of grains cannot be detected, and in the case shown in FIG. 5, the deformation of the pressure adjusting spring is subtle, so that even the initial setting value cannot be determined, and the operation cannot be performed by the operator. It is done by experience and intuition, so
The precision of whitening was not always good and unstable, and it was difficult for an inexperienced person to perform a difficult work.

[Means for Solving the Problem] The present invention solves such a problem and facilitates the operation that can further improve the whitening accuracy. On the upper part of the supporting arm that can be integrally supported, a supporting rod orthogonal to the supporting arm is loosely fitted so as to be movable in the longitudinal direction, and the front part of the supporting rod that is on the front side of the supporting arm. Is provided with a pressure-adjusting spring that elastically presses the compression plate toward the discharge port side of the whitening chamber, and is interlocked with the longitudinal movement of the supporting rod in the vicinity of the portion of the supporting rod that is on the rear side of the supporting arm. It is also possible to arrange and configure a pressure measuring instrument that can be operated as well as visible from the outside, and that the pressure measuring instrument is a load cell directly connected to the rear portion of the support rod. thing Is.

[Operation] Therefore, when the compression plate elastically pressed by the compression spring is pressed by the grain flowing out from the outlet of the polishing chamber, the supporting rod moves in the axial direction which is the longitudinal direction of the compression rod. This allows the pressure gauge and load cell to operate accurately while detecting and displaying the internal pressure of the whitening chamber, and the operator can adjust the pressure adjustment spring at that position reliably and easily to obtain the optimum pressure. It will be possible to adjust.

[Embodiment] Next, an embodiment of the present invention shown in FIGS. 1 and 2 will be described.

FIG. 2 shows a cross-sectional view of a grain refiner with a part omitted, and a spiral is provided around the outer periphery inside the whitening chamber 2 having a discharge port 3 at one end side.
The whitening roll 1 having 1a or the like is mounted in a cantilever manner, and the drive shaft 14 and the motor 15 of the whitening roll 1 are power-coupled via a pulley belt 16 so as to be the opposite side of the discharge port 3. Above the other end of the chamber 2, a lower side of a supply hopper 18 having a shutter 17 interposed therein is connected in communication, and a compression plate 4 elastically pressed by a pressure adjusting spring 6 is provided outside the discharge port 3. Then, it is constructed similarly to the conventional structure.

A wall 19 and a stay 20 are provided above the discharge port 3 so that the horizontal support rod 7 can be moved only in the axial direction without rotating.
The support arm 5 having the compression plate 4 mounted on the lower part is loosely fitted on the support rod 7, and is attached to the tip of the projecting rod 21 extending above the support rod 7. A pressure-adjusting spring 6 of a compression spring type is interposed between the support arm 5 and an adjusting knob 22 that abuts the upper end portion of the support arm 5 and is screwed to a screw portion 7a on one end side of the support rod 7. A pressure detecting spring 6a of a compression spring type having a spring coefficient larger than that of the pressure adjusting spring 6 is provided between the adjusting knob 23 and the wall portion 19 which are screwed into a portion of the supporting rod 7 near the stay 20. It is configured by interposing.

Further, a linear cam 7b is integrally formed above the portion of the support rod 7 between the support arm 5 and the wall 19, and below the dial gauge type pressure measuring device A installed above the linear cam 7b. A roller 25 joined to the linear cam 7b is mounted on the lower part of the hanging spindle 24.

Therefore, when the adjusting knob 22 is tightened, the pressing plate 4 is pressed by the deformation of the pressure adjusting spring 6, and the restoring force of both springs is balanced while the supporting rod 7 is moved forward by the deformation of the pressure detecting spring 6a. It becomes stable, and the movement of the support rod 7 raises the spindle 24 in contact with the linear cam 7b, so that the initial set value of the force for pressing the compression plate 4 can be shown before the operation. Become.

At the start of operation, the pressure of the grain in the whitening chamber 2 rises,
When the pressure to push and open the compression plate 4 exceeds the pressing force of the pressure adjusting spring 6, the compression plate 4 is pushed open and grains are discharged, but the compression plate 4 is pushed open. Then, the pressure adjusting spring 6 is deformed and the restoring force is increased,
The compression plate 4 becomes stable at the position where the forces are balanced, and in that state, the external force to the pressure adjusting spring 6 becomes proportional to the pressure in the polishing chamber 2, which is the same as the state before the operation. , The dial gauge type pressure measuring device A can proportionally detect and display the pressure in the whitening chamber 2 during operation,
The operator, while watching it, will be able to adjust to the optimum pressure at that position.

Further, FIG. 3 shows another embodiment, part of which is substantially the same as the above-mentioned embodiment as shown by the same reference numeral, but a wire 26 for automatic adjustment is interlocked with the upper end of the support arm 5. One end side of the load cell a which is connected and has the strain gauge 27 has a wall portion.
19 is fixed via a bolt nut 28 to the wall portion 19, and the other end of the support rod 7 movably mounted on the wall 19 is fixed to the other end of the load cell a via a bolt nut 29 to be directly connected, Wall 19
Is a screw type stopper that can abut the load cell a.
It is configured by attaching 30.

Therefore, the external force applied to the pressure adjusting spring 6 is applied to the support rod 7.
Is transmitted to the load cell a through the load cell a, and strain is generated in the load cell a in proportion to the force, while the electric resistance of the strain gauge 27 is changed according to the strain and the current is changed to detect the current. As a result, the pressure in the polishing chamber 2 can be read as a current value proportional thereto, and the adjustment knob 22 can be operated to adjust the pressure to the optimum pressure.

[Effect of the Invention] As described above, the present invention has the pressure adjusting spring 6 for elastically pressing the compression plate 4.
The pressure inside the polishing chamber 2 can be accurately detected by the pressure measuring instrument A and the load cell a while moving the supporting rod 7 with the interposition of the support rod 7 in the axial direction, which is the longitudinal direction thereof. It is possible to adjust the optimum pressure surely and easily even by an inexperienced person without relying on the above, and it is possible to make a grain refiner with further improved whitening accuracy. Measuring instrument A
It has a feature that it is possible to perform an appropriate adjustment operation at that position while observing the load cell a and the load cell a, and it can be suitably implemented with a simple structure that can be surely operated and accurately detected.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention, FIG. 2 is a sectional view of a grain mill, FIG. 3 shows another embodiment, and FIGS. 4 and 5 are conventional examples. Shown respectively. 1 ... Whitening roll, 2 ... Whitening chamber 3 ... Discharge port, 4 ... Compression plate, 5 ... Support arm, 6 ... Pressure adjusting spring, 7 ... Support rod, A ... Pressure measuring device a ... Load cell

Claims (2)

(57) [Scope of utility model registration request] 1. A polishing room (2) containing a polishing roll (1) inside.
Of a support arm (5) that can be integrally supported by the compression plate (4) in a grain refiner that is constructed by installing a compression plate (4) outside the discharge port (3) of A support rod (7) orthogonal to the support arm (5) is movably fitted in the longitudinal direction of the support rod (5), and the front part of the support rod (7) on the front side of the support arm (5) is A support rod (7), which is located behind the support arm (5), which is provided with a pressure adjusting spring (6) for elastically pressing the compression plate (4) toward the discharge port (3) side of the whitening chamber (2). The pressure inside the whitening chamber of the grain mill which is equipped with a pressure measuring device (A) that can be operated in conjunction with the longitudinal movement of the supporting rod (7) and is visible from the outside in the vicinity of Detection device. 2. A pressure detecting device for a whitening chamber of a grain mill according to claim 1, wherein the pressure measuring device is a load cell (a) directly connected to a rear portion of the supporting rod (7).