TWI717524B - Grinding-type horizontal rice mill - Google Patents

Abstract

A grinding-type horizontal rice mill that can ensure good flowability of the rice grains and improve milling efficiency even when the supply of rice grains is increased and the degree of fullness of the polishing chamber is increased, wherein grooves for agitation that extend in the axial direction are formed on the circular external peripheral surface of the grinding roll, a plurality of blow holes are formed in each of these grooves, and air is blown from the blow holes while the polishing roll is rotationally driven, thereby polishing the rice grains in the polishing chamber.

Description

Grinding horizontal rice polishing machine

The invention relates to a grinding type horizontal rice polishing machine for whitening rice grains by using a grinding drum.

In the past, a polishing type horizontal rice polishing machine has been known in which rice grains are polished using a polishing drum with an abrasive grain layer formed on the outer peripheral surface (refer to Patent Documents 1 and 2).

FIG. 8 shows the grinding type horizontal rice polishing machine described in Patent Document 1. Patent Document 1 describes a rice polishing machine 1, in which a grinding rotor 18 is horizontally rotatably mounted, and a porous-walled bran-removing whitening drum 19 is arranged around the grinding rotor 18, and the grinding rotor 18 and the porous wall are removed A whitening chamber 20 is formed between the chaff white tubes 19, and a baffle 23 is provided on the side of the rice grain discharge port 21 of the whitening chamber 20.

According to the rice polishing machine described in Patent Document 1, the rice is polished by the following method: the rice grains entering the whitening chamber 20 contact the rotating grinding rotor 18 to slowly grind the surface, and the rice bran is removed from the porous wall The holes of the whitening tube 19 are removed, and the baffle 23 is pushed aside by the whitened rice grains, and discharged from the rice grain discharge port 21 to the outside.

However, in the rice polishing machine described in Patent Document 1, if the supply of rice grains is increased in order to improve the rice polishing efficiency and the filling degree of the rice grains in the whitening chamber is increased, the fluidity of the rice grains decreases, causing problems such as clogging.

Fig. 9 shows the grinding type horizontal rice polishing machine described in Patent Document 2. The grain rolling machine described in Patent Document 2 is composed of the following method: the emery drum 14 is installed in the wire net 6 in a freely rotatable manner, and the gap between the wire net 6 and the emery drum 14 becomes the whitening chamber 15, which is installed in Near the discharge port on one end side of the whitening chamber 15, a pressing cover 27 biased toward the whitening chamber 15 by the biasing force given by the weight 28 is provided on the inner surface of the wire net 6 and located in the whitening chamber 15 Multiple blocking claws 29.

According to the grain rolling machine described in Patent Document 2, the rice is polished by the following method: the brown rice sent to the polishing chamber 15 is polished by the emery drum 14 to remove the chaff layer, and the rice is polished before being transported to the discharge port. As a result, the rice grains that become polished rice resist the pressing cover 27 and are discharged out of the discharge port 26.

In addition, according to the grain rolling machine described in Patent Document 2, the angle of the blocking claw 29 provided in the whitening chamber 15 is changed to change the resistance to rice grains, thereby preventing uneven rolling and implementing whitening ability ( Fine whiteness) adjustment.

However, in the grain rolling machine described in Patent Document 2, if the supply of rice grains is increased in order to improve the efficiency of polished rice and the filling degree of the rice grains in the polishing chamber is increased, the fluidity of the rice grains will also decrease, causing clogging and other problems. . [Related Technical Documents] [Patent Documents]

Patent Document 1: Japanese Patent Publication No. 2-18138 Patent Document 2: Japanese Patent Publication No. 62-114633

[Problem to be solved by the present invention] Therefore, the object of the present invention is to provide a grinding type horizontal rice polishing machine, which can ensure the rice grains even when the supply of rice grains is increased and the filling degree of the rice grains in the whitening chamber is increased. Liquidity improves rice polishing efficiency. [Technical means to solve the problem]

In order to achieve the above-mentioned object, it is a grinding type horizontal rice polishing machine in one of the embodiments of the present invention, which has a polishing drum composed of a porous wall, and a grinding drum rotatably arranged in the polishing drum. A whitening chamber is formed between the whitening drum and the grinding drum, the rice grains supplied from one end of the whitening chamber are whitened in the whitening chamber, and the whitened rice is discharged from the other end of the whitening chamber, which is characterized by: On the outer circumferential surface of the grinding drum with a circular cross-section perpendicular to the axial direction, a groove for stirring extending in the axial direction is formed, and a plurality of air jet holes are formed in the groove, and the grinding drum is driven by rotation while the air jet The hole blows air to perform the whitening in the whitening room.

In the grinding type horizontal rice polishing machine of this embodiment, the grinding drum has a circular outer peripheral surface. A stirring groove extending in the axial direction is formed on the outer peripheral surface of the grinding drum, and a plurality of air jets are formed in the groove The hole can drive the grinding drum while rotating and blow air from the jet hole to perform the whitening in the whitening chamber, so together with the rice stirring effect produced by the stirring groove and the rice stirring effect produced by the air, And it can greatly improve the fluidity of rice grains in the white room.

According to another embodiment of the present invention, the grinding type horizontal rice polishing machine is preferably provided with a discharge port closed by a baffle giving a predetermined biasing pressure on the other end side of the polishing chamber, so that the polishing chamber is The rice grains are discharged from the discharge port provided at the other end side of the whitening chamber by pushing open the baffle.

Therefore, according to the grinding type horizontal rice polishing machine of this embodiment, even if the supply of rice grains is increased and the filling degree of the rice grains in the whitening chamber is increased, the fluidity of the rice grains can be ensured and the rice polishing efficiency can be improved.

In the polishing type horizontal rice polishing machine of another embodiment of the present invention, it is preferable that the air jet hole has an opening in the groove for blowing air toward the rear of the rotation direction of the polishing drum.

In the grinding type horizontal rice polishing machine of this embodiment, if the air jet hole has an opening for blowing air in the groove toward the rear of the rotation direction of the grinding drum, the air can agitate the rice grains, and the The rice bran produced in the whitening chamber is effectively discharged from the porous wall of the whitening tube.

In the grinding type horizontal rice polishing machine of another embodiment of the present invention, it is preferable that the air jet hole has an opening in the groove for blowing air toward the front of the rotation direction of the grinding drum.

In the grinding type horizontal rice polishing machine of this embodiment, if the air jet hole has an opening for blowing air in the groove toward the front of the rotation direction of the grinding drum, the air can effectively agitate the rice grains, and the The rice bran produced in the whitening chamber is discharged from the porous wall of the whitening cylinder.

In the grinding type horizontal rice polishing machine of another embodiment of the present invention, it is preferable that the air jet hole has an opening in the groove for blowing air toward the one end side of the whitening chamber.

In the grinding type horizontal rice polishing machine of this embodiment, if the air-jet hole has an opening for blowing air in the groove toward the one end side of the whitening chamber, the air can effectively agitate the rice grains.

In the grinding type horizontal rice polishing machine of another embodiment of the present invention, it is preferable that the air jet hole has an opening in the groove for blowing air toward the other end side of the whitening chamber.

In the grinding type horizontal rice polishing machine of this embodiment, if the air jet hole has an opening for blowing air in the groove toward the other end of the whitening chamber, the air can be used to agitate the rice grains, and the rice grains can be improved Its mobility in the conveying direction.

In the grinding type horizontal rice polishing machine of another embodiment of the present invention, it is preferable that the groove is formed with a gentle slope on the front side of the rotation direction of the grinding drum and the rear side is formed by a steep slope.

In the grinding type horizontal rice polishing machine of this embodiment, if the groove is formed with a gentle slope on the front side of the grinding drum in the rotation direction and the rear side is formed by a steep slope, the rice grains flowing into the groove from the gentle slope , It is forcedly eliminated by the steep slope, which can stir rice grains more effectively.

In the polishing type horizontal rice polishing machine according to another embodiment of the present invention, the polishing drum preferably has an outer peripheral surface on which a super-hard abrasive grain layer is formed.

The grinding type horizontal rice polishing machine of the present invention is effective in improving rice polishing efficiency if the polishing drum has an outer peripheral surface formed with a super-hard abrasive grain layer, the polishing ability of the polishing drum is improved.

In the grinding type horizontal rice polishing machine of another embodiment of the present invention, it is suitable to provide a blocking member that gives resistance to the rice grains moving in the polishing chamber on the inner surface of the polishing tube.

In the polishing type horizontal rice polishing machine of this embodiment, if a blocking member that gives resistance to the rice grains moving in the polishing chamber is provided on the inner surface of the polishing tube, the polishing type horizontal rice polishing machine described in Patent Document 2 In the machine, even if the supply of rice grains is increased and the filling degree of the rice grains in the whitening chamber is increased, the fluidity of the rice grains can still be ensured and the rice polishing efficiency can be improved.

In the grinding type horizontal rice polishing machine according to another embodiment of the present invention, it is preferable that the grinding drum is formed into a plurality of drums.

In the polishing type horizontal rice polishing machine of the present embodiment, if the polishing drum is formed to be divided into a plurality of drums, the combination or replacement becomes easy, and a single operator can perform operations such as combination. In addition, when a part of the abrasive grain layer of the grinding roller is worn, only the necessary rollers can be replaced, which is more cost-effective than replacing the entire grinding roller. [Effects of the invention]

By means of the present invention, a grinding type horizontal rice polishing machine can be provided. Even if the supply of rice grains is increased and the filling degree of the rice grains in the whitening chamber is increased, the fluidity of the rice grains can be ensured and the rice polishing efficiency can be improved.

The embodiments of the present invention are described based on the drawings. Fig. 1 shows a schematic cross-sectional view of a polishing type horizontal rice polishing machine according to an embodiment of the present invention. The grinding type horizontal rice polishing machine 100 according to the embodiment of the present invention includes a grain feeding part 110 and a whitening part 120. The grain feeding portion 110 has a cylindrical grain feeding drum 111 and a threaded drum 112 arranged in the grain feeding drum 111, and a grain feeding chamber for conveying rice grains is formed between the grain feeding drum 111 and the threaded drum 112 113. The grain feed barrel 111 has a raw material supply port 114 formed in the upper part of one end side, and the raw material supply barrel 115 is installed upright at the raw material supply port 114, and on the other hand, it is opened in the other end side end. In addition, the threaded roller 112 is installed on a main shaft 116 that is rotationally driven by a driving motor not shown.

The whitening part 120 has a cylindrical or polygonal tube-shaped whitening tube 121 composed of a porous wall such as a wire mesh, and a polishing drum 122 located in the whitening tube 121 and coaxially arranged with the threaded roller 112. A whitening chamber 123 for whitening rice grains is formed between the whitening cylinder 121 and the grinding drum 122. Here, the grinding drum 122 has a circular outer peripheral surface in a vertical section in the axial direction, and a super-hard abrasive grain layer is formed on the outer peripheral surface, which is formed by electrodeposition of super-hard abrasive grains composed of cBN abrasive grains or diamond abrasive grains. to make.

The whitening chamber 123 communicates with the grain delivery chamber 113 at one end. In the whitening chamber 123, the rice grains conveyed from the grain delivery chamber 113 are whitened. On the other hand, the whitening chamber is provided on the other end. The discharge port 124 through which the rice grains are discharged is closed by a baffle 125 which is adjusted by a weight or the like to give a predetermined biasing force.

The polishing drum 122 has a plurality of air injection holes 126 formed, and an air supply source (not shown) blows the air supplied into the polishing drum 122 through the air injection holes 126. A chaff collecting chamber 127 is provided around the whitening chamber 123, and the chaff collecting chamber 127 is in communication with a chaff collecting duct 128 arranged below.

In the grinding type horizontal rice polisher 100 according to the embodiment of the present invention, the raw material rice R supplied from the raw material supply cylinder 115 to the grain feeding chamber 113 through the raw material supply port 114 is sent to the whitening chamber by the threaded drum 112 123 side delivery. Then, the raw material rice R transported to the whitening chamber 123 is whitened by the grinding action of the grinding drum 122 and moved toward the discharge port 124, and the baffle 125 is pushed open and discharged.

In the whitening chamber 123, rice bran is produced due to the whitening of the raw material rice R, but the rice bran is blown from the hole of the whitening drum 121 through the chaff collecting chamber 127 by the air blown from the jet hole 126 formed in the grinding drum 122 It is discharged to the chaff collecting duct 128.

Fig. 2 shows an explanatory view of the grinding drum, and is a front view. In addition, FIG. 3 shows the left side view of FIG. 2. In the embodiment of the present invention, the circular outer peripheral surface of the polishing drum 122 is formed with a plurality of grooves 131 for stirring which extend in parallel with the central axis of the polishing drum 122 and linearly extend. The groove 131 has a V-shaped cross-section, and the air injection hole 126 is formed to open on the inclined surface of the groove 131 forming the V shape.

Fig. 4 shows a cross-sectional perspective view of Fig. 2. The grinding drum 122 has a hollow portion 132 inside. On the side of the discharge port 124 arranged in the whitening chamber 123, at the end of one end of the polishing drum 122, an air inlet 133 is provided for supplying air f1 from an air supply source not shown in the figure. The grinding drum 122 is introduced into the hollow portion 132.

Fig. 5 shows a perspective view of the cylindrical roller constituting the grinding roller. The polishing drum 122 is composed of a plurality of cylindrical drums 134. The cylindrical drum 134 has a mounting portion 135 for the main shaft 116 in the center, and a plurality of pillars 136 arranged in a radial shape on the mounting portion 135, and super hard abrasive grains are formed on the outer peripheral surface supported by the pillars 136 Layer of cylinder 137. In the polishing drum 122, the air blowing hole 126 opened on the inclined surface forming the V shape of the groove 131 communicates with the hollow portion 132, and the air f2 introduced into the hollow portion 132 of the polishing drum 122 from the air inlet 133 , The air f3 is sprayed from the opening in the groove 131 through the spray hole 126.

Fig. 6 shows a left side view of Fig. 2, which is an explanatory diagram of the operation of the polishing drum. In the embodiment of the present invention, the agitating groove 131 of the polishing drum 122 has an opening of the air jet hole 126 formed on the inclined surface located at the front side of the rotation direction A of the polishing drum 122.

In the embodiment of the present invention, the grinding drum 122 is rotationally driven and the air f3 is blown from the air jet hole 126, and the rice grains are refined in the whitening chamber 123, so that the grinding drum 122 is used for grinding in the whitening chamber 123 The white rice grains are stirred by the plurality of stirring grooves 131 and also stirred by the air blown from the jet holes 126, so the fluidity is greatly improved.

Therefore, according to the grinding type horizontal rice polishing machine 100 according to the embodiment of the present invention, even when the supply amount of rice grains is increased, the filling degree of the rice grains in the whitening chamber 123 is increased, compared with the conventional grinding type horizontal rice polishing machine. The rice polishing machine can still ensure the fluidity of the rice grains, so the rice polishing efficiency can be improved.

In addition, according to the polishing type horizontal rice polishing machine 100 according to the embodiment of the present invention, air is blown from the air injection hole 126 toward the rear of the rotation direction A of the polishing drum 122, and the generated in the polishing chamber 123 The rice bran is effectively discharged from the hole of the whitening drum 121.

Fig. 7 shows another operation explanatory diagram of the grinding drum, which is another embodiment of the present invention. In another embodiment of the present invention, the agitating groove 131 of the polishing drum 122 has an opening of the air jet hole 126 formed on the inclined surface located at the rear side of the rotation direction A of the polishing drum 122.

According to the polishing type horizontal rice polishing machine 100 according to another embodiment of the present invention, the air f3 is blown from the air jet hole 126 toward the front of the rotation direction A of the polishing drum 122, so that the air f3 is blown in the polishing chamber 123 by the The white rice grains by the grinding action of the grinding drum 122 are more effectively stirred by the air blown from the air jet hole 126.

Therefore, according to the grinding type horizontal rice polishing machine 100 according to another embodiment of the present invention, even when the supply amount of rice grains is increased, the filling degree of the rice grains in the whitening chamber 123 is increased, compared with the conventional grinding type The horizontal rice polishing machine can still ensure the fluidity of the rice grains, so the rice polishing efficiency can be further improved.

In the embodiment of the present invention, the air injection hole 126 may have an opening for blowing air toward the rice grain supply side of the whitening chamber 123. If the air jet hole 126 has an opening for blowing air toward the rice grain supply side of the whitening chamber 123, the rice grains can be stirred more effectively by the air.

In addition, in the embodiment of the present invention, the air jet hole 126 may also have an opening for blowing air from the whitening chamber 123 toward the rice grain discharge side. If the air jet hole 126 has an opening for blowing air from the whitening chamber 123 toward the rice grain discharge side, the air can be used to agitate the rice grains, and the fluidity of the rice grains in the conveying direction can be improved.

In the embodiment of the present invention, the stirring groove 131 may be formed by a gentle slope on the front side of the grinding drum 122 in the rotation direction, and may be formed by a steep slope on the back side in the rotation direction. If the groove 131 is formed by a gentle slope on the front side in the rotation direction of the grinding drum 122 and a steep slope on the rear side in the rotation direction, the rice grains flowing into the groove 131 from the gentle slope are forced by the steep slope. It can be discharged more effectively, and the rice grains can be stirred more effectively.

In the embodiment of the present invention, the grinding drum 122 is formed by combining a plurality of separable cylindrical drums 134, so the combination or replacement of the grinding drum 122 becomes easy, and a single operator can perform various operations. In addition, the polishing drum 122 only needs to replace the necessary cylindrical drum 134 when a part of the abrasive grain layer is worn out, which is more cost-effective than replacing the entire polishing drum.

In the above-mentioned embodiment of the present invention, although the case where the polishing type horizontal rice polishing machine 100 is not provided with blocking claws in the polishing chamber 123 is described as an example, the polishing type described in Patent Document 2 shown in FIG. The horizontal rice polishing machine is equipped with blocking claws that give resistance to the rice grains moving in the whitening room. Similarly, increasing the supply of rice grains and increasing the filling degree of the rice grains in the whitening room can ensure the flow of rice grains. Improve the efficiency of rice polishing.

The present invention is not limited to the above-mentioned embodiment, and it is naturally possible to appropriately change its configuration as long as it does not depart from the scope of the invention. [Industrial availability]

The grinding type horizontal rice polishing machine of the present invention can ensure the fluidity of the rice grains and improve the rice polishing efficiency even when the supply of rice grains is increased and the filling degree of the rice grains in the whitening chamber is improved, so it is extremely useful.

6‧‧‧Wire mesh 14‧‧‧Carborundum drum 15‧‧‧Whitening chamber 18‧‧‧Grinding rotor 19‧‧‧Porous wall bran removing white tube 20‧‧‧Whitening chamber 21‧‧‧Rice discharge outlet 23‧‧ ‧Baffle plate 26‧‧‧Exhaust port 27‧‧‧Pressure cover 28‧‧‧Weight 29‧‧‧Block claw 100‧‧‧Grinding type horizontal rice polisher 110‧‧‧Grain delivery department 111‧‧‧Grain delivery Barrel 112‧‧‧Threaded drum 113‧‧‧Grain delivery chamber 114‧‧‧Raw material supply port 115‧‧‧Raw material supply cylinder 116‧‧‧Spindle 120‧‧‧Whitening part 121‧‧‧Whitening cylinder 122‧‧grinding Drum 123‧‧‧Whitening room 124‧‧‧Exhaust outlet 125‧‧‧Baffle 126‧‧‧Air jet 127‧‧‧Branch collection chamber 128‧‧‧Bran collection duct 131‧‧‧Ditch 132‧‧‧Hollow part 133‧‧‧Air inlet 134‧‧‧Cylindrical drum 135‧‧‧Installation part 136‧‧Support 137‧‧‧Cylinder f2, f3‧‧‧Air R‧‧‧Raw material rice

Fig. 1 is a schematic cross-sectional view of a polishing horizontal rice polishing machine according to an embodiment of the present invention. Figure 2 is a front view of the grinding drum. Fig. 3 is a left side view of Fig. 2. Fig. 4 is a cross-sectional perspective view of Fig. 2. Figure 5 is a perspective view of a cylindrical drum. Fig. 6 is an explanatory diagram of the operation of the polishing drum. Fig. 7 is a diagram illustrating another operation of the polishing drum. Figure 8 is an explanatory diagram of a conventional grinding horizontal rice polishing machine. Figure 9 is an explanatory diagram of a conventional grinding horizontal rice polishing machine.

no

126‧‧‧Air jet

131‧‧‧ditch

134‧‧‧Cylindrical roller

135‧‧‧Installation Department

136‧‧‧Pillars

137‧‧‧Cylinder

f2, f3‧‧‧air

Claims (6)

A grinding type horizontal rice polishing machine, which has a polishing drum composed of porous walls and a polishing drum rotatably arranged in the polishing drum. A polishing chamber is formed between the polishing drum and the polishing drum, The rice grains supplied from one end side of the whitening chamber are refined in the whitening chamber, and the whitened rice particles are discharged from the other end side of the whitening chamber, characterized in that the grinding drum has a circular outer peripheral surface perpendicular to the axial direction. , On the circular outer peripheral surface of the grinding drum, a plurality of stirring grooves extending in the axial direction are formed, and a plurality of air jet holes are respectively formed in the plural stirring grooves, and the grinding drum is driven while rotating. Air is blown from the jet hole to perform fine whitening in the whitening chamber. The groove is formed by a gentle slope on the front side in the rotation direction of the polishing drum, and the rear side is formed by a steep slope. For example, the grinding type horizontal rice polishing machine of the first item of the scope of patent application, wherein the air jet hole has an opening in the groove for blowing air toward the rear of the rotation direction of the grinding drum. For example, the grinding type horizontal rice polishing machine of the first item of the scope of patent application, wherein the air jet hole has an opening in the groove for blowing air toward the front of the rotation direction of the grinding drum. For example, the grinding type horizontal rice polishing machine of any one of items 1 to 3 of the scope of patent application, wherein the grinding drum has an outer peripheral surface formed with a super-hard abrasive grain layer. For example, the grinding type horizontal rice polishing machine of any one of items 1 to 3 in the scope of the patent application, wherein a blocking member that gives resistance to the rice grains moving in the polishing chamber is provided on the inner surface of the polishing tube. For example, the grinding type horizontal rice polishing machine of any one of items 1 to 3 in the scope of patent application, wherein the grinding drum is formed to be divided into a plurality of drums.

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