JP7659829B2 - Horizontal pressing device - Google Patents

Description

The present invention relates to a horizontal pressing device.

As conventional pushing devices, a vertical pushing device (see, for example, Patent Document 1) and a horizontal pushing device shown in FIG. 4 are known. The horizontal pushing device 100 shown in FIG. 4 is equipped with a hopper 101 into which solid material W (see FIG. 5) such as cheese or butter with ultra-high viscosity is put, and a screw 102 extending in the horizontal direction (left-right direction in the figure) is provided at the bottom of the hopper 101. The base end (left side in the figure) of the screw 102 is attached to a gear box 103 shown in FIG. 4, and a motor 104 with a reducer is attached to the gear box 103. The tip end (right side in the figure) of the screw 102 is arranged on the rotary pump 105 side. As a result, when the motor 104 with a reducer is driven, the screw 102 rotates via the gear box 103, and the rotating screw 102 pushes the solid material W put into the hopper 101 into the rotary pump 105 and transfers it.

JP 2020-189657 A

As shown in Figure 4, the screw 102 of the horizontal pressing device 100 described above is composed of a shaft portion 102a and a blade portion 102b that is attached in a spiral shape to the outer circumferential surface of the shaft portion 102a. Although only one such screw 102 is shown in Figure 4, a pair of such screws 102 are arranged in line symmetry.

Thus, the solids W fed into the hopper 101 are pushed into the rotary pump 105 and transported by this pair of screws 102.

However, as shown in FIG. 5(a), when a block-shaped solid material W is put into the hopper 101, there is a high possibility that the solid material W will land on the pair of screws 102, as shown in FIG. 5(a). This causes a problem in that the solid material W cannot be pushed into the rotary pump 105 and transported by the pair of screws 102, even if the solid material W rotates on the pair of screws 102.

Therefore, in order to alleviate this situation, as shown in FIG. 5(b), a method is known in which the angle of the solid material W fed into the hopper 101 is adjusted so that the solid material W is caught between a pair of screws 102, or a load is applied from above using an auxiliary device (not shown).

However, this method not only makes the work extremely complicated, but also limits the types of solids W that can be used with auxiliary equipment (not shown), making it impossible to push the solids into the rotary pump 105 for transport, and does not adequately solve the problem.

In view of the above problems, the present invention aims to provide a horizontal pushing device that can easily push and transport various solid objects.

The above object of the present invention is achieved by the following means. Note that the parentheses indicate reference symbols of the embodiments described below, but the present invention is not limited to these.

According to the invention of claim 1, a hopper (101) into which a solid material (W) is introduced,
a screw (1) disposed at the bottom of the hopper (101) so as to be perpendicular to the hopper (101) and forcing the solid material (W) into a pump (rotary pump 105) for transport;
The screw (1)
A shaft portion (2),
and a blade portion (3) provided on an outer circumferential surface (2c) of the shaft portion (2),
The blade portion (3) includes a first blade portion (30) and a second blade portion (31),
The first blade portion (30) and the second blade portion (31) are not connected to each other and are provided with a gap (K1) therebetween,
The first blade portion (30) and/or the second blade portion (31) are characterized in that a protrusion (30b, 31b) is provided at the initial tip portion (30a, 31a) and no other protrusions are provided .

According to the invention of claim 2, in the horizontal pressing device of claim 1,
The blade portion (3) further includes a third blade portion (32),
The first blade portion (30) is provided at one end (right end 2b) of the shaft portion (2) on the pump (rotary pump 105) side,
The third blade portion (32) is provided at the other end (left end 2a) of the shaft portion (2) opposite to the pump (rotary pump 105) side,
the second blade portion (31) is provided between the first blade portion (30) and the third blade portion (32), and the second blade portion (31) and the third blade portion (32) are not connected to each other and are provided with a gap (K2) therebetween;
The first blade portion (30) is characterized in that it is formed so as to have a longer axial length (L1) relative to the shaft portion (2) than the third blade portion (32).

According to a third aspect of the present invention, in the horizontal pressing device according to the first or second aspect , the protrusions (30b, 31b) are provided so as to protrude outward .

Next, the effects of the present invention will be explained using reference symbols in the drawings. Note that the reference symbols in parentheses are those of the embodiments described below, but the present invention is not limited to these.

According to the invention of claim 1, even if a solid object (W) gets on the screw (1), the solid object (W) can be dropped into the gap (K1), and the solid object (W) dropped into the gap (K1) can be crushed by the protrusions (30b, 31b) provided on the initial tip portions (30a, 31a) of the first blade portion (30) and/or the second blade portion (31) .

Therefore, according to the present invention, even if a solid object (W) is placed on the screw (1), the screw (1) can crush the solid object (W), so that the solid object (W) can be pushed into the rotary pump (105) and transported. This makes it possible to simply and easily push and transport various solid objects (W).

According to the invention of claim 2, the first blade portion (30) is provided at one end (right end 2b) of the shaft portion (2) on the pump (rotary pump 105) side, and the third blade portion (32) is provided at the other end (left end 2a) of the shaft portion (2) on the opposite side to the pump (rotary pump 105) side. The first blade portion (30) is formed so that its axial length (L1) relative to the shaft portion (2) is longer than that of the third blade portion (32), so that no gap is generated at the one end (right end 2b) of the shaft portion (2) on the pump (rotary pump 105) side. This makes it possible to maintain the pushing force against the pump (rotary pump 105).

According to the third aspect of the present invention , the projections (30b, 31b) are provided so as to protrude outward , so that the solid matter (W) can be firmly bitten into.

FIG. 1 is a front perspective view showing a pair of screws according to an embodiment of the present invention, which are provided line-symmetrically. FIG. 11 is a simplified explanatory diagram showing a pair of screws according to the same embodiment arranged in a direction perpendicular to the hopper, in which (a) shows a state in which solid matter is placed on the pair of screws, and (b) shows a state in which the solid matter has fallen toward the pair of screws as the pair of screws rotate. FIG. 2A is a simplified explanatory diagram showing a state in which the solid matter falls further toward the pair of screws as a result of the pair of screws being further rotated from the state shown in FIG. 2B, and FIG. 2B is a simplified explanatory diagram showing an enlarged view of the area circled in FIG. 2A. FIG. 1 is a front view showing a conventional horizontal pressing device. FIG. 2A is a simplified explanatory diagram showing a state in which a solid material is placed on a pair of conventional screws, and FIG. 2B is a simplified explanatory diagram showing a state in which a solid material is wound between a pair of conventional screws.

One embodiment of the horizontal pressing device according to the present invention will be specifically described below with reference to the drawings. In the following description, when directions such as up, down, left, and right are indicated, they refer to up, down, left, and right when viewed from the front of the illustration. The same reference numerals are used for configurations that are the same as those of the conventional device, and descriptions thereof will be omitted.

The only difference between the horizontal pressing device according to this embodiment and the conventional horizontal pressing device 100 is the shape of the screw 102, and the rest is the same. Therefore, the screw of the horizontal pressing device according to this embodiment will be described in detail below.

<Screw description>
As shown in Fig. 1, a pair of screws 1 are provided so as to be symmetrical with respect to a straight line S shown in Fig. 1, similar to the conventional horizontal pushing device 100. Although not specifically shown, the pair of screws 1 are also arranged below a hopper 101 so as to be perpendicular to the hopper 101 (horizontal direction) like the conventional horizontal pushing device 100.

As shown in FIG. 1, such a screw 1 is composed of a shaft portion 2 and a blade portion 3. The shaft portion 2 is formed in a cylindrical shape extending in the left-right direction in the figure. The shaft portion 2 rotates around the axis O as a base point. Specifically, the left end portion 2a of the shaft portion 2 shown in FIG. 1 is attached to a gear box 103 shown in FIG. 4. As a result, when the motor with a reducer 104 (see FIG. 4) is driven, the shaft portion 2 rotates around the axis O via the gear box 103 (see FIG. 4). The right end portion 2b of the shaft portion 2 shown in FIG. 1 is disposed on the rotary pump 105 (see FIG. 4) side.

As shown in Figure 1, the blade portion 3 is attached and fixed in a spiral shape to the outer circumferential surface 2c of the shaft portion 2. Specifically, as shown in Figure 1, the blade portion 3 is composed of a first blade portion 30, a second blade portion 31, and a third blade portion 32. Note that the first blade portion 30, the second blade portion 31, and the third blade portion 32 are each formed separately and are attached and fixed to the outer circumferential surface 2c of the shaft portion 2 by welding or the like.

As shown in FIG. 1, the first wing 30 is attached and fixed by spirally wrapping around the outer circumferential surface 2c of the shaft 2 from the right end 2b of the shaft 2 to approximately the center of the shaft 2 along the axis O. A claw-shaped projection 30b is provided at the first tip 30a of the first wing 30 and projects outward (toward the left end 2a of the shaft 2).

On the other hand, as shown in FIG. 1, the second blade portion 31 is not connected to the first blade portion 30, but is attached and fixed to the first blade portion 30 with a gap K1 from the first tip portion 30a of the first blade portion 30 to the right in the figure, and is spirally wound around the outer circumferential surface 2c of the shaft portion 2 along the axis O toward the left end portion 2a of the shaft portion 2. In the figure, the number of turns of the first blade portion 30 is 1.5, and the number of turns of the second blade portion 31 is 2/3.

Furthermore, the second wing portion 31 has a claw-shaped protrusion 31b at the first tip portion 31a of the second wing portion 31 that protrudes outward (toward the left end portion 2a of the shaft portion 2).

On the other hand, as shown in FIG. 1, the third blade 32 is not connected to the second blade 31, but is attached and fixed by spirally winding around the outer circumferential surface 2c of the shaft 2 from the first tip 31a of the second blade 31 to the left end 2a of the shaft 2 along the axis O with a gap K2 to the right in the figure. Note that, in the figure, the number of turns of the first blade 30 is 1.5, and the number of turns of the third blade 32 is 2/3. Therefore, the axial length L1 of the first blade 30 is formed to be longer than the axial length L2 of the third blade 32.

Thus, as shown in FIG. 2, a pair of screws 1 configured in this manner are arranged at the bottom of the hopper 101 in a direction perpendicular to the hopper 101 (horizontal direction). In this case, as shown in FIG. 2(a), if a block-shaped solid material W is put into the hopper 101 and gets on the pair of screws 1, as described above, in the conventional case, the solid material W would only rotate on the pair of screws 1, and the pair of screws 1 would not be able to push the solid material W into the rotary pump 105 and transport it. However, in this embodiment, as described above, since the gaps K1 and K2 are provided, when the pair of screws 1 rotate inward (arrow Y1 direction) as shown in FIG. 2(a), the solid material W falls from the position shown in FIG. 2(a) to the pair of screws 1 by a height H1 due to the gaps K1 and K2, as shown in FIG. 2(b).

Furthermore, when the pair of screws 1 rotate inward (arrow Y1 direction) from the state shown in FIG. 2(b), the gaps K1 and K2 cause the solid material W to fall from the position shown in FIG. 2(b) by a height H2 toward the pair of screws 1 as shown in FIG. 3(a). At this time, as described above, the first tip 30a of the first blade portion 30 is provided with a protrusion 30b, and the first tip 31a of the second blade portion 31 is provided with a protrusion 31b, so that the protrusions 30b and 31b bite into the solid material W as shown in FIG. 3(b). This causes the solid material W to be crushed, and the solid material W can be caught in the pair of screws 1. Therefore, the solid material W crushed by the pair of screws 1 and caught in the pair of screws 1 is forced into the rotary pump 105 and transported.

Therefore, according to this embodiment, even if solid matter W is placed on the screw 1, the screw 1 can crush and entrain the solid matter W, so that it can be pushed into the rotary pump 105 and transported, making it possible to simply and easily push and transport a variety of solid matter W.

<Description of Modifications>
The shape of the screw 1 shown in this embodiment is merely an example, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. For example, in this embodiment, an example is shown in which the first blade portion 30 is provided with a protrusion 30b and the second blade portion 31 is provided with a protrusion 31b, but this is not limited to this, and a protrusion may be provided on only one of them. However, it is preferable to provide the protrusions 30b and 31b in the parts where the gaps K1 and K2 are provided, as in this embodiment. This is because the solid material W dropped into the screw 1 side can be crushed reliably.

In addition, in this embodiment, an example in which two gaps K1 and K2 are provided is shown, but this is not limited thereto, and one gap or three or more gaps may be provided, and may be changed as appropriate depending on the application. Also, the number of second blade portions 31 may be increased according to the number of gaps.

In addition, in this embodiment, an example is shown in which a protrusion 30b is provided on the initial tip 30a of the first blade portion 30 and a protrusion 31b is provided on the initial tip 31a of the second blade portion 31, but this is not limited to the above, and protrusions may be provided on other parts. However, it is preferable to provide a protrusion 30b on the initial tip 30a of the first blade portion 30 and a protrusion 31b on the initial tip 31a of the second blade portion 31. If the protrusions 30b, 31b are provided in these parts, the protrusions 30b, 31b can be firmly bitten into the block-shaped solid material W. Therefore, it is preferable to provide a protrusion 30b on the initial tip 30a of the first blade portion 30 and a protrusion 31b on the initial tip 31a of the second blade portion 31.

In addition, in this embodiment, the third blade 32 located on the left end 2a side of the shaft 2 does not have a protrusion 30b like the first blade 30 or a protrusion 31b like the second blade 31, but may have such a protrusion. However, since the left end 2a of the shaft 2 is the part that is attached to the gear box 103 (see Figure 4), even if a protrusion is provided, it will not come into contact with the solid object W, so it is meaningless to provide a protrusion, and it is therefore preferable not to provide one.

In addition, in this embodiment, the axial length L1 of the first blade portion 30 is formed to be longer than the length L2 in the direction of the third blade portion 32, but the axial length L1 of the first blade portion 30 may be shortened to be approximately the same as the axial length L2 of the third blade portion 32. However, it is preferable to form the axial length L1 of the first blade portion 30 to be longer than the length L2 in the direction of the third blade portion 32. That is, since the first blade portion 30 is attached to the right end portion 2b side of the shaft portion 2, the pushing force against the rotary pump 105 (see FIG. 4) is important. Therefore, if the axial length L1 of the first blade portion 30 is shortened and the gaps K1 and K2 as described above are provided on the right end portion 2b side of the shaft portion 2, the pushing force may be weakened. Therefore, in order to maintain the pushing force, it is preferable to form the axial length L1 of the first blade portion 30 to be longer than the length L2 in the direction of the third blade portion 32.

In addition, in this embodiment, the shape of the protrusions 30b and 31b is illustrated as being claw-like, but the shape is not limited to this and may be any shape, such as round or square.

In addition, in this embodiment, an example in which a pair of screws 1 are provided is shown, but the present invention is not limited to this, and a single screw or three or more screws may be provided.

1 Screw 2 Shaft portion 2a Left end portion (other end portion)
2b Right end (other end)
2c Outer circumferential surface 3 Blade portion 30 First blade portion 30a First tip portion (end portion)
30b Protrusion 31 Second blade portion 31a First tip portion (end portion)
31b Protrusion 32 Third blade portion 105 Rotary pump (pump)
K1, K2 Gap W Solid

Claims (3)

a hopper into which solids are fed;
A screw is disposed below the hopper so as to be perpendicular to the hopper, and the screw pushes the solid material into a pump to transport the solid material.
The screw is
A shaft portion,
A blade portion provided on an outer circumferential surface of the shaft portion,
The blade portion includes a first blade portion and a second blade portion,
The first blade portion and the second blade portion are not connected to each other and are provided with a gap therebetween,
A horizontal pressing device in which the first blade portion and/or the second blade portion have a protrusion at an initial tip portion and no protrusions are provided anywhere else . The blade portion further includes a third blade portion,
The first blade portion is provided at one end of the shaft portion on the pump side,
The third blade portion is provided at the other end of the shaft portion opposite to the pump side,
The second blade portion is provided between the first blade portion and the third blade portion, and the second blade portion and the third blade portion are not connected to each other and are provided with a gap therebetween,
The horizontal pressing device according to claim 1 , wherein the first blade portion is formed so as to have a longer axial length relative to the shaft portion than the third blade portion. 3. The horizontal pressing device according to claim 1 , wherein the projection is provided so as to protrude outward .

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