JP3347924B2 - Milling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling room for grinding grain supplied from a receiving port while transporting the grain to an outlet, and a suction ventilation means for sucking bran separated from the grain in the grinding room. The present invention relates to a grain mill provided with the above.

[0002]

2. Description of the Related Art In such a grain mill, when grain is milled in a milling room, the temperature of the grain rises due to frictional heat or the like. If the temperature of the grain is too high (for example, if the temperature is higher than the outside air temperature +20 to 25 ° C.), the quality of the grain may be reduced. By passing the air through, the kernels were cooled in parallel with the suction of the bran.

[0003]

However, in the ventilation of the grain cooling air by the suction ventilation means, since the pressure loss is large, the temperature of the grain is reduced to a temperature at which the quality does not deteriorate (for example, the outside air temperature + 20 ° C.). Lower temperature) may not be able to obtain the volume of the grain cooling air just enough to reduce it to
The present invention, which has been desired to be improved, has been made in view of such circumstances, and a purpose of the present invention is to provide a grain refiner capable of reliably preventing the quality deterioration of grains caused by an increase in temperature during milling. To provide.

[0004]

According to a first feature of the present invention, the milling room is characterized in that the milling chamber conveys the grains supplied from the lower receiving port to the upper discharging port. The milling chamber casing forming the milling chamber is constituted by a cylindrical drum screen and a cylindrical body connected in a vertical direction, and is disposed inside the cylindrical portion, and the cylindrical portion is provided. A bran collection chamber is formed between the milling chamber casing and a portion of the cylindrical portion facing the drum screen is formed of a transparent member, and a cylindrical portion with a flange having an upper opening as the discharge port.
But the lower flange is located inside the upper end of the cylindrical part.
Provided from the bran collection chamber to the outside.
The vent hole that opens with the flange of the cylindrical part with flange
A bran discharge chute is provided between the cylindrical portion and the lower end of the cylindrical portion, and a suction port of the suction ventilation unit is provided for the bran discharge chute. The milling room is provided with a pressure-feeding ventilation means for pressure-feeding the gas for cooling the grain to the milling room, and the flow rate of the gas for cooling the grain sucked by the suction-ventilation means is pressure-fed by the pressure-feeding ventilation means. The flow rate is larger than the flow rate of the grain cooling gas.

[0005] A second characteristic configuration is that it communicates with the milling room.
A gas reservoir is provided, and
To supply gas for rejection to the gas reservoir.
The point is that it is composed .

[0006] A third characteristic configuration is that a rotating body for polishing is rotatably provided in the polishing chamber casing so that an axis thereof is vertically oriented, and a ventilation hole is formed in the polishing chamber casing. In the rotating body for, located in the inside, while forming a ventilation path for flowing gas, a ventilation hole that opens to the outer peripheral portion from the ventilation path is formed,
The suction ventilation unit is configured to perform a suction action on an outer peripheral portion of the milling chamber casing, and the pressure ventilation unit is configured to supply a gas for cooling kernels to the ventilation path . There is in the point.

[0007] A fourth characteristic configuration is that a cylindrical shaft portion having a ventilation hole that opens from the inside of the cylinder to the outer periphery is formed on the opposite side to the discharge port side of the grinding rotary body. A shaft casing that is coaxially rotatable integrally with the rotating body and is provided so that the inside of the tube communicates with the ventilation path , and a shaft casing that covers the cylindrical shaft portion is provided; The point is that it is configured to supply the gas for cooling the grain into the inside of the casing.

[0008] A fifth characteristic structure is that an end of the cylindrical shaft portion is provided.
The feature is that a lid for opening and closing the opening is provided so as to be openable and closable .

[0009]

[0010]

[0011]

According to the first feature, the suction ventilation means is provided.
In parallel with the suction action on the milling room.
Ventilation means pressurizes the grain cooling gas into the milling room.
You. In other words, the cooperation of the suction ventilation means and the pressure ventilation ventilation means
And let the cooling gas flow through the milling room. Therefore,
Increasing the flow rate of the grain cooling gas flowing through the semen
Can be. Also, for cooling kernels sucked by suction ventilation means
For cooling the grain whose gas flow rate is pumped by the pumping ventilation means
Since the flow rate is larger than the gas flow rate, the milling chamber was kept at a negative pressure.
It is. In addition, due to the suction effect of the suction ventilation means, the air holes pass through.
As a result, air is sucked in from the outside.

According to a second characteristic configuration, a grain cooling gas
Once to the gas reservoir and then to the milling room.
In the gas reservoir, increase the pressure of the grain cooling gas
And suppresses pulsation of the grain cooling gas
can do.

According to a third characteristic configuration, a grain cooling gas
Is milled through a ventilation hole from the ventilation passage inside the milling rotary body.
And flowed across the grain layer of the milling room.
Later, it flows out of the milling room through the ventilation holes in the milling room casing
I do. In other words, the gas for cooling the grain is applied to the grain layer in the milling room.
Flow through as short a path as possible, reducing pressure loss
Can be done.

According to a fourth feature, a shaft casing is provided.
The kernel cooling gas supplied to the inside of the
It flows into the cylinder from the hole and vents through the cylinder and the rotating body for polishing.
Through the road and into the milling room through the vents of the rotating body for milling
I do. In other words, in the fixedly installed shaft casing
By supplying the gas for cooling the grain to the section,
Gas is supplied to the ventilation passage of the rotating body for milling
can do. Furthermore, the inside of the shaft casing is
It can function as a reservoir .

According to the fifth characteristic configuration, the rotating body for milling is
Grain that has entered the ventilation path of the milling rotary body through the ventilation holes
Can be taken out by opening the lid.

[0016]

[0017]

[0018]

According to the first characteristic configuration, it flows through the milling room.
To increase the flow rate of the grain cooling gas
Maintain the grain temperature at a level that does not cause quality degradation
To prevent grain quality degradation
Now you can do it. Also, the flow of gas for cooling the grain
Even if there is a gap in the route that leads to the outside,
Can be prevented from escaping outside.
I came to be able to. In addition, air from outside through the vent
As it is sucked in and flows along the inner surface of the cylindrical part,
Prevent the transparent part of the cylindrical part from fogging by bran
Is now available.

According to the second characteristic configuration, the gas storage portion
Can increase the pressure of the grain cooling gas
To further increase the flow rate of the grain cooling gas flowing through the milling room
Can be increased well. Also, the pulse of grain cooling gas
Pulsation of the grain cooling gas
The speed of grain transport in the milling room
Control, resulting in stable milling performance
Variance in the state of grain milling (eg, degree of whitening)
The key can now be reduced.

According to a third characteristic configuration, a grain cooling gas
Pressure loss when flowing through the grain bed of the milling room
Can reduce the temperature of the grains during milling
Suction and pressure ventilation while maintaining the temperature not to come
The output of the stage can be reduced,
Running costs can be reduced
Was.

According to the fourth characteristic configuration, the pressure sending ventilation means
Of gas for cooling the grain in the shaft casing
Can be connected in a fixed state to the
Since there is no need to form a new reservoir,
It can be simplified. By the way, grain
Cooling gas is supplied directly to the ventilation path of the rotating body for polishing.
It is assumed that the configuration is as follows. However, this
In this case, the discharge port of the pressure ventilation system is rotated for milling.
In the ventilation path of the rotating body for polishing in a sliding state that allows the body to rotate
Since communication must be established, the connection configuration must be complicated.
Become.

According to the fifth characteristic configuration, the rotating body for milling is
The work of removing grains that have entered the ventilation path has been simplified.

[0023]

[0024]

[0025]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the grain crushing apparatus supplies a grain to be milled to a supply section A, and while the grain supplied from the lower receiving port 1 by the supply section A is conveyed to an upper discharge port 2. A milling section B having a milling chamber 3 for milling, a resistance applying section E which flows through the milling chamber 3 and gives resistance to the grains discharged from the outlet 2, and discharges the grains milled in the milling section B. The main part is a discharge part D, and a ventilation part F that ventilates air for sucking the bran separated from the grains in the milling room 3 and cooling the grains.

The milling section B will be described with reference to FIG. The milling section B is configured such that a milling rotary member R is rotatably provided in a milling room casing K1. A description will be given of the polishing room casing K1. A cylindrical drum screen 5 and a cylindrical body 6 which are connected to each other in the up-down direction are disposed coaxially with the cylindrical portion 4a inside the cylindrical portion 4a for forming the milling portion of the base frame 4. The polishing chamber 3 is formed inside the cylindrical body 6 and a bran collecting chamber 7 is formed outside the drum screen 5 and the cylindrical body 6. The portion of the cylindrical portion 4a facing the drum screen 5 is:
It is formed of a transparent member, and is configured so that the bran collection chamber 7 can be seen through from the outside. On the drum screen 5,
Although details will be described later, a large number of ventilation holes 13a are formed. Therefore, the polishing room casing K1 is constituted by the drum screen 5 and the cylindrical body 6.

A flanged cylindrical portion 4b of the base frame 4 is connected to the upper end of the cylindrical portion 4a.
The upper opening of b is a discharge port 2, and a receiving port 1 is formed on the peripheral wall of the cylindrical body 6. At the fitting portion between the flange of the flanged cylindrical portion 4b and the cylindrical portion 4a, a ventilation hole 15 that opens from the bran collection chamber 7 to the outside is formed. That is,
The cylindrical part 4b with a flange is connected to the lower part of the cylindrical part 4b.
a, and the vent hole 15 is
Between the flange of the cylindrical portion 4b and the cylindrical portion 4a.
It is formed between them. A bran discharging chute 4f of the base frame 4 is provided in communication with the lower end of the cylindrical portion 4a.

Next, the rotating body R for polishing will be described. Using a pair of bearings 9, a cylindrical shaft portion 8 having a large number of ventilation holes 8a opening from the inside of the tube to the outer peripheral portion is formed.
The shaft support cylindrical portion 4c of the base frame 4 is provided rotatably around a vertical axis. The cylindrical polishing roll 10 and the cylindrical transport screw 11 are connected so that the inside of the cylinder communicates. Although details will be described later, the milling roll 10 has a large number of ventilation holes 16a that open from the inside of the cylinder to the outer periphery. With the milling roll 10 and the conveying screw 11 connected to each other, with the milling roll 10 positioned at the top and positioned in the milling chamber casing K1, the conveying screw 11 is connected to the cylindrical shaft portion 8 such that the insides of the cylinders communicate with each other. It is connected with. Thus, the milling roll 10, the conveying screw 11, and the cylindrical shaft 8 are provided so as to be integrally rotatable around the same vertical axis. And the electric motor for milling M
At 2, the milling roll 10, the conveying screw 11, and the cylindrical shaft 8 are configured to be driven to rotate around the same axis. A bolt 34 is screwed into the opening at the lower end of the cylindrical shaft 8, and the opening at the lower end of the cylindrical shaft 8 is opened and closed by attaching and detaching the bolt 34. That is, the bolt 34 functions as a lid that opens and closes the opening at the lower end of the cylindrical shaft 8.

That is, the milling roll 10 and the conveying screw 11 constitute a milling rotary member R, and the milling rotary member R is rotatably provided in the milling chamber casing K1. Further, a passage formed by connecting the inside of each of the milling roll 10, the conveying screw 11, and the cylindrical shaft portion 8 in series is configured to function as an air passage H. Base 4
Is configured to function as a shaft casing K2 that covers the cylindrical shaft portion 8. Further, a space is formed between the cylindrical portion 4c for supporting the shaft and the cylindrical shaft portion 8 so as to be air-tightly partitioned by a pair of bearings 9, and this space functions as an air reservoir 33 described later. It is configured as follows.

As shown in FIGS. 2 and 3, the drum screen 5 is provided with a plurality of grooved frames 12 extending inward at equal intervals in the circumferential direction, and provided so as to close gaps between the grooved frames 12. A plurality of screen members 13 and a plurality of whetstones 14 provided along the inside of the groove of each groove type frame 12.
It consists of: The screen member 13 is provided with a large number of ventilation holes 13a for discharging the bran peeled off from the grains during the polishing to the bran collection chamber 7.

The milling roll 10 is, as shown in FIG.
A roll body 16 having a closed upper end;
And two grindstones 17 respectively provided in grooves formed on the outer peripheral surface at equal intervals in the circumferential direction. In each of the portions of the roll body 16 corresponding to the positions between the grindstones 17, a large number of ventilation holes 16a opening from the inside of the cylinder (air passage H) to the outer peripheral portion are formed in a vertically arranged row. .

Next, the supply section A will be described with reference to FIG. The supply section A is connected to the grain supply path 18 that is connected to the receiving port 1, a transverse feed screw 19 rotatably supported in the grain supply path 18, and rotationally drives the transverse feed screw 19. It comprises an electric motor M1 for supply, a hopper 20 connected to the grain supply path 18, and a shutter 21 interposed at an outlet of the hopper 20. The supply electric motor M <b> 1 is configured to rotate at a predetermined constant rotational speed, and to adjust the amount of grain supplied to the receiving port 1 by adjusting the opening of the shutter 21.

Next, the discharge section D will be described with reference to FIG. The discharge part D forms a discharge chamber 22 inside the cylindrical part 4d for forming a discharge chamber of the base frame 4 connected to the upper part of the flanged cylindrical part 4b, and the discharge chute 23 communicates with the cylindrical part 4d. Connected and configured.

Next, the resistance applying section E will be described with reference to FIGS. The resistance imparting portion E is directed to the support frame guide portion 4e of the base frame 4 connected to the upper portion of the cylindrical portion 4d, the flow direction of the grain flowing from the inside of the milling chamber 3 toward the discharge port 2, that is, A support frame 24 provided so as to be reciprocally movable up and down, a resistor 25 provided so as to be reciprocally movable up and down with respect to the support frame 24, and the resistor 25 , That is, a spring body 26 provided to the support frame 24 so as to urge it downward.
An electric motor M3 for adjusting the spring pressure for driving the support frame 24 to reciprocate up and down is provided.

The support frame 24 is formed in a cylindrical shape, and is provided so as to be vertically reciprocally movable with respect to the support frame guide 4e in a state where the axis thereof is oriented vertically. The resistor 25 is composed of a resistance board 25a and a round bar body 25b vertically provided on the upper surface of the resistance board 25a.
b is slidably fitted inside the support frame 24. The spring body 26 is mounted on the resistance plate 2
5a and the support frame 24. A rack gear 27 is fixed to the outer peripheral surface of the support frame 24, and the rack gear 27
Is meshed with a pinion gear 28 fixed to the output shaft of the spring-pressure adjusting electric motor M3, and the support frame 24 is vertically reciprocated by the forward and reverse rotation of the spring-pressure adjusting electric motor M3. It is configured to do so. In other words, by adjusting the relative positional relationship between the resistor 25 and the support frame 24 by the operation of the spring pressure adjusting electric motor M3, the length of the spring body 26 is adjusted to adjust the urging force, and the grain size is adjusted. It is configured to adjust the degree of milling.

Next, the ventilation section F will be described with reference to FIG. The suction port of the suction fan 29 is connected to the bran discharge chute 4f. Further, an air supply passage 30 is connected to the shaft support cylindrical portion 4c, and an outlet of the pressure feeding fan 31 is connected to the air supply passage 30. In the air supply passage 30,
Damper 32 for adjusting the amount of air to be pumped by the pumping fan 31
Is interposed.

When the suction fan 29 and the pressure-feeding fan 31 are operated, the suction fan 29 and the pressure-feeding fan 31 cooperate with each other, as shown by solid arrows in FIGS. 1 and 2. The air that was released
0, the air reservoir 33, the vent 8a, the vent H, the vent 16a, the milling chamber 3, the vent 13a, the bran collection chamber 7, and the bran discharge chute 4f sequentially flow from the outlet of the suction fan 29. It is discharged to the outside, and at the same time, the milling room 3
The bran separated from the grains is discharged along with the milling.
In addition, by the suction action of the suction fan 29, air is sucked in from the outside through the vent hole 15 and flows along the inner surface of the cylindrical portion 4a to prevent the transparent portion of the cylindrical portion 4a from being clouded by bran or the like. It is configured to prevent this. Damper 3
By the adjustment of 2, the air volume sucked by the suction fan 29 is adjusted so as to be larger than the air volume fed by the pressure feeding fan 31, and the inside of the milling chamber 3 is maintained at a negative pressure. is there. Since air is also sucked in from the ventilation holes 15 and other gaps, specifically, the amount of air suctioned by the suction fan 29 is set to about 1.3 times the amount of air blown by the pressure feeding fan 31.

By the cooperation of the suction fan 29 and the pressure-feeding fan 31, the air for cooling the grain flows through the milling chamber 3 to increase the flow rate of the air for cooling the grain flowing through the milling chamber 3. At the same time, by increasing the flow velocity, the flow state and posture of the grains flowing upward in the milling chamber 3 are disturbed, so that the milling is performed more favorably.

Accordingly, the suction fan 29 corresponds to a suction ventilation means for sucking the bran separated from the grains in the milling room 3, and the pumping fan 31 sends the gas for cooling the grains to the milling room 3. It corresponds to a pressure-feeding ventilation means. In addition, suction ventilation means 2
Numeral 9 is configured to exert a suction action on the outer peripheral portion of the polishing room casing K1. Further, the pressure-feeding ventilation means 31 is configured to supply the air for cooling the kernel to the inside of the shaft casing K2 functioning as the air reservoir 33.

Another Embodiment Next, another embodiment will be described. In the above-described embodiment, the case where the inside of the shaft portion casing K2 is configured to function as the air reservoir 33 is illustrated, but the air reservoir 33 may be separately provided. The amount of air suctioned by the suction fan 29 and the amount of air blown by the pressure feeding fan 31 can be appropriately changed in a state where the amount of suction air is larger than the amount of air sent by pressure. The location where the air for cooling the grain is supplied by the pressurized ventilation means 31 can be variously changed in addition to the inside of the shaft casing K2 exemplified in the above embodiment, and may be, for example, an opening at the lower end of the cylindrical shaft portion 8. . In the above embodiment,
Milling roll 10 and conveying screw 11 connected coaxially
Although the case where the present invention is applied to a so-called vertical grain mill in which the cylindrical shaft portion 8 is provided with the axis thereof oriented in the vertical direction has been exemplified, the present invention is not limited to this, and various other types of refiners may be used. Applicable in grain equipment. For example, the present invention can be applied to a rice polishing type grain mill having a brush instead of the grindstone 17.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a grain mill.

Fig. 2 Cross-sectional plan view of the milling room of the grain mill

Fig. 3 Side view of the main part of the milling room of the grain mill

FIG. 4 is a longitudinal sectional front view of a resistance applying unit of the grain mill.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Milling room 4a Cylindrical part 4f Bran discharge chute part 5 Drum screen 6 Cylindrical body 7 Bran collecting chamber 8 Cylindrical shaft part 8a Vent 13a Vent 15 Vent 16a Vent 29 Suction ventilation means 31 Pressurized ventilation means 33 Gas reservoir 34 Lid K1 Milling room casing K2 Shaft casing H Vent R Rotating body for milling

Continued on the front page (72) Inventor Takuichi Komine 64 Ishizukita-cho, Sakai-shi, Osaka Inside the Kubota Sakai Works Co., Ltd. (72) Inventor Yasuo 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Manufacturing Co., Ltd. In-house (56) References JP-A-4-118060 (JP, A) JP-A-6-114279 (JP, A) JP-A-60-61042 (JP, A) JP-A-1-127705 (JP, A) JP-A-6-400 (JP, A) JP-A-6-399 (JP, A) Japanese Utility Model Application Sho 62-72142 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B02B 7/00 B02B 3/06

Claims (5)

(57) [Claims] 1. A milling room (3) for milling while transporting grains supplied from a receiving port (1) to an outlet (2), and bran separated from the grains in the milling room (3). A milling machine provided with suction ventilation means (29) for sucking grains, wherein the milling chamber (3) is configured to transfer the grains supplied from the lower receiving port (1) to the upper discharging port (2). ), Which is configured to be polished while being transported to the crushing chamber casing (K1) which forms the crushing chamber (3).
Is composed of a cylindrical drum screen (5) and a cylindrical body (6) connected in the vertical direction, and the cylindrical portion (4)
a), the cylindrical portion (4a) and the milling chamber casing (K1)
A portion of the cylindrical portion (4a) facing the drum screen (5) is formed of a transparent member, and an upper opening is formed in the discharge port (2). Cylindrical part with flange
(4b) attaches the lower flange to the cylindrical portion (4a).
A ventilation hole provided to be located inside the upper end portion and open to the outside from the bran collection chamber (7);
(15) is the flange of the cylindrical portion (4b) with a flange.
A bran discharging chute (4f) is provided between the cylindrical portion (4a) and communicates with the lower end of the cylindrical portion (4a), and the bran discharging chute (4f) is provided. A suction port of the suction ventilation unit (29) is connected to the grinding room (3); and a pressure ventilation unit (31) for pressure-feeding a gas for cooling kernels is provided in the milling chamber (3). The grain refiner in which the flow rate of the gas for cooling the grain sucked in the step (1) is larger than the flow rate of the gas for cooling the grain pumped by the pressure-feeding ventilation means (31). 2. A gas reservoir (33) communicating with the milling chamber (3) is provided, and the pressure-feeding ventilation means (31) sends a gas for cooling a grain to the gas reservoir (33). The grain milling apparatus according to claim 1, configured to supply. 3. A rotating body (R) for polishing is provided in the polishing chamber casing (K1) so as to be rotatable with its axis centered vertically, and a ventilation hole (13a) is provided in the polishing chamber casing (K1). ) Is formed, a ventilation path (H) for allowing gas to flow therethrough is formed in the milling rotary body (R), and is formed from the ventilation path (H) to the outer peripheral portion. A ventilation hole (16a) that opens to the outside is formed, and the suction ventilation means (29) is configured to perform a suction action on an outer peripheral portion of the milling chamber casing (K1), and the pressure sending ventilation means (31). The grain milling device according to claim 1 or 2, wherein the device is configured to supply a gas for cooling grain to the ventilation path (H). 4. A cylindrical shaft portion having a ventilation hole (8a) opened from the inside of the cylinder to the outer periphery on the side opposite to the discharge port (2) side of the polishing rotary body (R). (8)
Is provided so as to be rotatable integrally and coaxially with the milling rotary body (R), and the inside of the cylinder is communicated with the ventilation path (H), and the shaft covering the cylindrical shaft (8) is provided. A casing (K2) is provided, and the pressurized ventilation unit (31) includes the shaft casing (K2).
4. The grain milling device according to claim 3, wherein a gas for cooling the grain is supplied to the inside of (2). 5. A lid (34) for opening and closing an opening at an end of the cylindrical shaft (8) is provided to be openable and closable.
A milling device as described.