Mixing equipment, construction system for monolithic refractories, construction method for monolithic refractories

Abstract

This method involves installing the mixing equipment closer to the construction site, compared to using mixing equipment that cannot be disassembled with tools. [Solution] The mixing device comprises a hopper in which mixing blades are installed inside that rotate to mix amorphous refractory material and liquid, and a frame which is arranged in the same direction as the hopper and is detachable from the hopper, and to which a motor is attached that provides rotational force to the mixing blades.

Description

Technical Field

[0001] The present disclosure relates to a kneading device, a construction system for monolithic refractories, and a construction method for monolithic refractories.

Background Art

[0002] In the dredged soil classification system using a pneumatic conveying system described in Patent Document 1, the dredged soft mud-like soil is pneumatically conveyed, and the formation and collapse of a soil plug are repeated in the soil conveying pipe, and the soil plug conveyed in a turbulent state is introduced into an inverted conical cyclone body. Using the centrifugal force caused by its velocity energy and the weight difference of the object to be treated, two-phase separation is performed into fine particles and coarse particles. The lower end opening of the overflow discharge pipe provided at the axial center of the cyclone body is positioned in the region of the fine particles. Further, the soil in this region of the fine particles is discharged from the overflow discharge pipe using the pressure of the high-pressure air for soil conveyance.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventionally, for constructing monolithic refractories, vibration pouring construction may be used. In vibration pouring construction, it is necessary to manually transport the monolithic refractory (powder) to the kneading device (mixer), and knead the transported monolithic refractory and liquid with the kneading device to obtain a kneaded material. In particular, when the entrance to the construction site is narrow and the kneading device cannot be transported to the construction site, in such a case, the kneading device is installed at a position away from the construction site, and the kneaded material kneaded by the kneading device must be manually transported to the construction site. Here, the conventional kneading device has a structure that cannot be disassembled using tools to a size that can enter the entrance to the construction site.

[0005] The problem addressed by this disclosure is to install a mixing device closer to the construction site, compared to the case where a mixing device that cannot be disassembled using tools is used. [Means for solving the problem]

[0006] The mixing apparatus according to the first embodiment comprises a hopper in which mixing blades are installed inside that rotate to mix amorphous refractory material and liquid, and a frame which is arranged in the same direction as the hopper and is detachable from the hopper, and to which a motor is attached that provides rotational force to the mixing blades.

[0007] According to the above embodiment, the hopper, which has mixing blades installed inside, and the frame to which the motor is installed are arranged side by side in one direction. Furthermore, the hopper and the frame are detachable. This allows the mixing device to be installed closer to the construction site by passing it through a narrow entrance to the construction site, compared to the case where a mixing device that cannot be disassembled with tools is used.

[0008] The kneading apparatus according to the second embodiment is the kneading apparatus according to the first embodiment, further comprising a plurality of other components that are detachable from the hopper or the frame, and in the disassembled state, the hopper, the frame, and the plurality of other components are capable of passing through an entrance to a construction site inside a furnace with a diameter of 600 mm.

[0009] According to the above embodiment, each disassembled component is capable of passing through an opening with a diameter of 600 mm. This allows the mixing device to be installed closer to the construction site by allowing the components to pass through a 600 mm diameter opening, compared to the case where a mixing device that cannot be disassembled using tools is used.

[0010] The kneading apparatus according to the third embodiment is the kneading apparatus according to the first or second embodiment, wherein the rotation shaft of the kneading blade and the output shaft of the motor extend in the direction in which the hopper and the frame are aligned.

[0011] According to the above embodiment, the driving force of the motor can be transmitted to the kneading blade with a simpler configuration compared to the case where the rotating shaft and the output shaft extend in different directions.

[0012] The kneading apparatus according to the fourth embodiment is the kneading apparatus according to any one of the first to third embodiments, wherein the rotating shaft and the output shaft are arranged on the same straight line.

[0013] According to the above embodiment, the driving force of the motor can be transmitted to the kneading blade with a simpler configuration compared to the case where the rotating shaft and the output shaft are arranged in parallel.

[0014] The kneading apparatus according to the fifth embodiment is the kneading apparatus according to the first or second embodiment, wherein the rotation shaft of the kneading blade and the output shaft of the motor extend in a direction that intersects with respect to the direction in which the hopper and the frame are aligned.

[0015] According to the above embodiment, the driving force of the motor can be transmitted to the kneading blade with a simpler configuration compared to the case where the rotating shaft and the output shaft extend in different directions.

[0016] In the sixth embodiment, the kneading apparatus is configured such that the rotating shaft and the output shaft are arranged parallel to each other, as described in the first, second, and fifth embodiments.

[0017] According to the above embodiment, the axial size of the mixing device can be reduced compared to the case where the output shaft and the rotation shaft extend in the same straight line.

[0018] The construction system for monomorphic refractories according to the seventh embodiment comprises an airflow conveying device for conveying monomorphic refractories by airflow conveying method, and a mixing device described in any one of the first to sixth embodiments for mixing the monomorphic refractories conveyed by the airflow conveying device with a liquid.

[0019] According to the above configuration, compared to the case where a mixing device is installed near the construction site and the unshaped refractory material is transported to the mixing device by hand, the amount of work required to transport the unshaped refractory material to the mixing device can be reduced.

[0020] The construction system for the amorphous refractory according to the eighth aspect is the construction system for the amorphous refractory described in the seventh aspect, wherein the air conveyance device is disposed above the kneading device and includes a cyclone that adds a liquid to the air-conveyed amorphous refractory and supplies it to the kneading device.

[0021] According to the above aspect, it is possible to suppress the amorphous refractory from flying as dust as compared with the case where the amorphous refractory is directly supplied to the kneading device.

[0022] The construction method for the amorphous refractory according to the ninth aspect is to install the kneading device described in any one of the first to sixth aspects near the construction location in the furnace, convey the amorphous refractory by air using the air conveyance method, knead the amorphous refractory that is air-conveyed and to which a liquid is added by the kneading device, and pour the kneaded material kneaded by the kneading device into the mold at the construction location to construct the amorphous refractory.

[0023] According to the above aspect, it is possible to reduce the man-hours for transporting the amorphous refractory to the kneading device as compared with the case of transporting the amorphous refractory manually to the kneading device after installing the kneading device near the construction location.

[0024] The construction method for the amorphous refractory according to the tenth aspect is the construction method for the amorphous refractory described in the ninth aspect, wherein the amorphous refractory is transported above the kneading device by the air conveyance method, a liquid is added to the amorphous refractory transported above the kneading device, and the amorphous refractory to which the liquid is added is supplied to the kneading device below.

[0025] According to the above aspect, it is possible to suppress the amorphous refractory from flying as dust as compared with the case where the amorphous refractory is directly supplied to the kneading device.

[0026] The construction method of the monolithic refractory according to the 11th aspect is the construction method of the monolithic refractory described in the 9th or 10th aspect, wherein the entrance to the construction location is 600 mm in diameter, and the kneading device is passed through the entrance in a disassembled state and assembled in the furnace to install the kneading device near the construction location.

[0027] According to the above aspect, compared with the case of using a kneading device that cannot be disassembled using tools, the kneading device can be installed near the construction location by passing through an entrance with a diameter of 600 mm.

Effect of the Invention

[0028] According to the present disclosure, compared with the case of using a kneading device that cannot be disassembled using tools, the kneading device can be installed near the construction location.

Brief Description of the Drawings

[0029] [Figure 1] It is a perspective view showing a kneading device according to the first embodiment of the present disclosure. [Figure 2] It is an exploded perspective view showing a kneading device according to the first embodiment of the present disclosure. [Figure 3] It is a perspective view showing a hopper provided in the kneading device according to the first embodiment of the present disclosure. [Figure 4] It is a plan view showing kneading blades arranged inside a hopper provided in the kneading device according to the first embodiment of the present disclosure. [Figure 5] (A)(B) It is a perspective view showing a chute and a hopper leg provided in the kneading device according to the first embodiment of the present disclosure. [Figure 6] It is a perspective view showing a lifting hopper provided in the kneading device according to the first embodiment of the present disclosure. [Figure 7] It is a perspective view showing a motor pedestal provided in the kneading device according to the first embodiment of the present disclosure. [Figure 8] (A)(B) It is a perspective view showing a pedestal leg and a motor cover provided in the kneading device according to the first embodiment of the present disclosure. [Figure 9] This is an explanatory diagram used to illustrate the construction system for monolithic refractories and the construction method for monolithic refractories according to the first embodiment of this disclosure. [Figure 10] This is a cross-sectional perspective view showing a cyclone provided in a refractory construction system according to the first embodiment of this disclosure. [Figure 11] (A)(B)(C) These are front views showing modified configurations of the entrance to a construction site through which the mixing apparatus according to the first embodiment of this disclosure can pass. [Figure 12] This is an exploded perspective view showing a kneading apparatus according to a second embodiment of the present disclosure. [Figure 13] This is a side view showing a kneading apparatus according to a second embodiment of the present disclosure. [Modes for carrying out the invention]

[0030] <First Embodiment> An example of a mixing apparatus, a construction system for monolithic refractories, and a construction method for monolithic refractories according to the first embodiment of this disclosure will be described with reference to Figures 1 to 11. The arrow H shown in each figure indicates the vertical direction of the mixing apparatus. The arrow W shown in each figure is perpendicular to arrow H and indicates the width direction of the mixing apparatus. The arrow D shown in each figure is perpendicular to arrows H and W and indicates the depth direction of the mixing apparatus. First, the mixing apparatus will be described, and then the construction system for monolithic refractories and the construction method for monolithic refractories will be described.

[0031] (Mixing device 10) The mixing device 10 is a device that mixes monolithic refractory material with liquid water to produce a compounding material. Here, monolithic refractory material is a material made by blending several to dozens of types of granular or powdered raw materials according to its intended use, and is formed into monolithic refractory material at the construction site by adding water and spraying, hammering, or pouring it into a formwork or mold using compressed air.

[0032] As shown in Figures 1 and 2, the mixing device 10 has a symmetrical shape with respect to the center of the width when viewed from the depth direction. The mixing device 10 includes a hopper 12 in which mixing blades 20 are installed, and a chute 30 which constitutes a discharge passage for the mixed material discharged from the hopper 12. The mixing device 10 also includes hopper legs 40 that support the hopper 12, and a raised hopper 50 to which a safety cover 46 is attached.

[0033] Furthermore, the kneading device 10 includes a motor 60 that provides rotational force to the kneading blades 20, and a motor stand 70 to which the motor 60 is mounted. The kneading device 10 also includes stand legs 80 that support the motor stand 70, and a motor cover 90.

[0034] Furthermore, the hopper 12, which has the mixing blades 20 installed inside, the chute 30, the hopper legs 40, the raised hopper 50 to which the safety cover 46 is attached, the motor stand 70 to which the motor 60 is attached, the stand legs 80, and the motor cover 90 are all designed to be disassembled.

[0035] Here, "disassemblable" means that in a configuration where one component is attached to another component by fasteners such as bolts using a tool, the two components can be separated by loosening the fasteners and detaching them.

[0036] Each component, when disassembled, is sized to pass through a manhole 202a (see Figure 9) with a diameter of 600 mm. The manhole size that the disassembled components can pass through is 600 mm in diameter, 500 mm is even better, and 450 mm is ideal. In this embodiment, each component, when disassembled, is sized to pass through a manhole with a diameter of 450 mm. Manhole 202a is an example of an entrance to the construction site 210 (see Figure 9).

[0037] [Hopper 12, Mixing blade 20] -Hopper 12- As shown in Figure 3, the hopper 12 has a main body portion 14a with a U-shaped cross-section extending in the depth direction, a closing plate 14b that closes the front end (left side in the figure) of the main body portion 14a in the depth direction, and a closing plate 14c that closes the rear end (right side in the figure) of the main body portion 14a in the depth direction. Furthermore, the hopper 12 has a pair of flange plates 16 connected to both ends of the main body portion 14a in the width direction, with the plate thickness direction being vertical, and a pair of support portions 18 attached to both sides of the main body portion 14a in the width direction.

[0038] The closure plate 14b has an outlet 15a through which the kneading material is discharged, and a through hole 15b that supports the rotation shaft 22 of the kneading blade 20. The closure plate 14c also has a through hole 15c (see Figure 4) that supports the rotation shaft 22 of the kneading blade 20. Furthermore, the outer edge of the closure plate 14c is widened outward from the main body 14a, and this widened portion of the closure plate 14c has multiple mounting holes 15d that penetrate in the depth direction.

[0039] The flange plates 16 are provided in pairs and, when viewed from above, are rectangular in shape extending in the depth direction. Furthermore, the flange plates 16 have multiple mounting holes 16a that are aligned in the depth direction and penetrate in the vertical direction.

[0040] A pair of support portions 18 are provided, extending downward from the flange plate 16. A mounting plate 19 is provided at the lower end of each support portion 18, with its thickness oriented vertically. Furthermore, a mounting hole 19a is formed in the mounting plate 19, penetrating in the vertical direction.

[0041] -Mixing blade 20- As shown in Figures 3 and 4, the kneading blade 20 is located inside the hopper 12 and comprises a rotating shaft 22 extending in the depth direction, a support portion 24 whose base end is attached to the rotating shaft 22 and which extends radially to the rotating shaft 22, and a blade portion 26 attached to the tip of the support portion 24.

[0042] The rotating shaft 22 is cylindrical and is supported by through holes 15b and 15c of the hopper 12 via a bearing member (not shown). The rotating shaft 22 also protrudes from the closing plate 14c of the hopper 12 towards the back in the depth direction, and a connection part 22a for connecting to the output shaft 62 of the motor 60 (see Figure 7) is provided at the protruding end of the rotating shaft 22.

[0043] As shown in Figure 4, the support parts 24 are provided at five locations spaced apart in the depth direction. In the following description, they will be referred to as support parts 24a, 24b, 24c, 24d, and 24e, starting from the front in the depth direction and moving towards the back in the depth direction. The wing part 26 attached to support part 24a will be referred to as wing part 26a, the wing part 26 attached to support part 24b will be referred to as wing part 26b, the wing part 26 attached to support part 24c will be referred to as wing part 26c, the wing part 26 attached to support part 24d will be referred to as wing part 26d, and the wing part 26 attached to support part 24e will be referred to as wing part 26e.

[0044] The support parts 24a are provided in pairs on either side of the rotating shaft 22, and the wing parts 26a attached to the tips of the support parts 24a are each inclined to one side with respect to the axial direction of the rotating shaft 22.

[0045] A pair of support parts 24b are provided on either side of the rotating shaft 22, and the mounting angle of the support parts 24b is different from the mounting angle of the support part 24a. The blade part 26b attached to the tip of one support part 24b is inclined to the other side with respect to the axial direction of the rotating shaft 22, and the blade part 26b attached to the tip of the other support part 24b extends along the axial direction of the rotating shaft 22.

[0046] One support portion 24c is provided, and the mounting angle of the support portion 24c is the same as the mounting angle of the support portion 24a. The wing portion 26c attached to the tip of the support portion 24c is inclined to the other side with respect to the axial direction of the rotation axis 22.

[0047] A pair of support parts 24d are provided on either side of the rotating shaft 22, and the mounting angle of the support parts 24d is the same as that of the support parts 24b. The blade part 26d attached to the tip of one support part 24d extends along the axial direction of the rotating shaft 22, while the blade part 26d attached to the tip of the other support part 24d is inclined to the other side with respect to the axial direction of the rotating shaft 22.

[0048] A pair of support parts 24e are provided on either side of the rotating shaft 22, and the mounting angle of the support parts 24e is the same as that of the support part 24a. The wing parts 26e attached to the tips of the support parts 24e are each inclined to one side with respect to the axial direction of the rotating shaft 22.

[0049] [Shoot 30, Hopper Legs 40] -Shoot 30- As shown in Figures 1 and 2, the chute 30 forms a discharge passage for the kneaded material discharged from the discharge port 15a of the hopper 12. As shown in Figure 5(A), the chute 30 extends with an incline such that the front portion in the depth direction is lower than the rear portion. The chute 30 has a main body portion 32 with a U-shaped cross-section that extends in the direction of inclination, and an attachment portion 34 that extends from the rear end of the main body portion 32 in the depth direction to the rear in the depth direction.

[0050] The mounting portion 34 is plate-shaped with its thickness in the vertical direction, and when viewed from above, it has a rectangular shape extending in the width direction. Mounting holes 34a that penetrate vertically are formed at both ends of the mounting portion 34 in the width direction.

[0051] In this configuration, a bolt 98a, which is a fastening tool, is inserted into the mounting hole 34a from below and tightened onto a nut (not shown), which is the fastening target component provided on the hopper 12. This attaches the chute 30 to the hopper 12. The chute 30 can also be removed from the hopper 12 by loosening the bolt 98a and detaching it from the nut. Thus, the chute 30 and the hopper 12 are designed to be detachable.

[0052] -Hopper Legs 40- As shown in Figures 1 and 2, the hopper legs 40 are legs that support the hopper 12 from below. As shown in Figure 5(B), the hopper legs 40 are U-shaped when viewed from the depth direction. At both ends of the hopper legs 40 in the width direction, there are leg members 40a that extend in the vertical direction.

[0053] Furthermore, a mounting plate 42 is positioned at the upper end of each leg member 40a, with the plate thickness direction oriented vertically. In addition, a mounting hole 42a is formed in the mounting plate 42, which penetrates in the vertical direction.

[0054] In this configuration, as shown in Figure 3, a bolt 98a, which is a fastener, is inserted from above into the mounting hole 19a of the support portion 18 of the hopper 12. Furthermore, the bolt 98a inserted into the mounting hole 19a is inserted into the mounting hole 42a of the hopper leg portion 40 shown in Figure 5(B). A nut 98b is then tightened onto the bolt 98a (see Figure 3) inserted into the mounting hole 42a. This attaches the hopper leg portion 40 to the hopper 12. The hopper leg portion 40 can also be removed from the hopper 12 by loosening the bolt 98a and detaching it from the nut 98b. Thus, the hopper leg portion 40 and the hopper 12 are designed to be detachable.

[0055] [Raised hopper 50, safety cover 46] The riser hopper 50 is attached to the upper side of the hopper 12, as shown in Figures 1 and 2. The amorphous refractory material to which water has been added is supplied to the hopper 12 through the riser hopper 50, and the riser hopper 50 is designed to suppress the generation of dust.

[0056] As shown in Figure 6, the raised hopper 50 has a main body portion 52 which is a rectangular frame shape that penetrates in the vertical direction, and a pair of flange plates 54 which are connected to both ends of the main body portion 52 in the width direction and whose thickness direction is vertical.

[0057] The main body 52 is formed using a plate material with its thickness direction oriented horizontally. The pair of flange plates 54 extend outward in the width direction from the lower end of the side plate 52a of the main body 52, whose thickness direction oriented is the width direction.

[0058] The flange plate 54 is rectangular in shape, extending in the depth direction when viewed from above. Furthermore, the flange plate 54 has multiple mounting holes 54a that are aligned in the depth direction and penetrate through in the vertical direction.

[0059] The safety cover 46 is installed inside the main body 52 of the raised hopper 50 and has a grid-like structure. This safety cover 46 prevents large foreign objects from being supplied into the hopper 12 (see Figure 1).

[0060] In this configuration, as shown in Figure 6, a bolt 98a, which is a fastening device, is inserted from above into the mounting hole 54a of the raised hopper 50. Furthermore, the bolt 98a inserted into the mounting hole 54a is inserted into the mounting hole 16a of the hopper 12 shown in Figure 3. Also, a nut 98b is tightened onto the bolt 98a (see Figure 6) inserted into the mounting hole 16a. This attaches the raised hopper 50 to the hopper 12. The raised hopper 50 can be removed from the hopper 12 by loosening the bolt 98a and detaching it from the nut 98b. In this way, the raised hopper 50 with the safety cover 46 attached and the hopper 12 are designed to be detachable.

[0061] [Motor mount 70, motor 60] -Motor mount 70- As shown in Figures 1 and 2, the motor stand 70 is mounted on the rear side in the depth direction of the hopper 12 and is a stand that supports the motor 60. The motor stand 70 is positioned alongside the hopper 12 in the depth direction (horizontal direction). As shown in Figure 7, the motor stand 70 has a main body 72 that extends in the depth direction and a mounting frame 76. The horizontal direction is just one example of a direction. The motor stand 70 is just one example of a stand.

[0062] The main body 72 is ladder-shaped when viewed from above and extends in the depth direction, and has a pair of support frames 72a that are spaced apart in the width direction and extend in the depth direction. Furthermore, the main body 72 has three auxiliary frames 72b that are stretched across the pair of support frames 72a and are spaced apart in the depth direction.

[0063] Furthermore, a mounting hole 78 is formed in the central part of the support frame 72a in the depth direction, and it penetrates vertically.

[0064] Furthermore, the auxiliary frame 72b, positioned furthest forward in the depth direction, has mounting sections 75 on the underside of both ends in the width direction, each having a mounting plate 74 with its thickness oriented vertically. The mounting plate 74 also has mounting holes 74a that penetrate vertically. Similarly, the auxiliary frame 72b, positioned furthest in the depth direction, also has mounting sections 75 with mounting plates 74 having mounting holes 74a.

[0065] Furthermore, a pair of mounting frames 76 are provided, with their base ends attached to both ends in the width direction of the auxiliary frame 72b, which is positioned furthest forward in the depth direction, and extending upward. Each mounting frame 76 also has a pair of mounting holes 76a that are spaced apart in the vertical direction and penetrate through in the depth direction.

[0066] -Motor 60- As shown in Figures 1 and 2, the motor 60 is attached to the auxiliary frame 72b (see Figure 7) of the motor mount 70 using fasteners (not shown). As shown in Figure 7, the output shaft 62 of the motor 60 extends from the main body 60a of the motor 60 toward the front in the depth direction. The output shaft 62 and the rotation shaft 22 of the kneading blade 20 (see Figure 3) are arranged on the same straight line. Furthermore, a connecting part 62a is provided at the tip of the output shaft 62 for connecting to the connecting part 22a of the rotation shaft 22 of the kneading blade 20 shown in Figure 3. Note that the connecting part 62a and the connecting part 22a are designed to be detachable.

[0067] In this configuration, as shown in Figure 7, a bolt 98a, which is a fastener, is inserted into the mounting hole 76a of the mounting frame 76 of the motor stand 70 from the rear side in the depth direction. Furthermore, the bolt 98a inserted into the mounting hole 76a is inserted into the mounting hole 15d of the hopper 12 shown in Figure 3. Also, a nut 98b is tightened onto the bolt 98a (see Figure 7) inserted into the mounting hole 15d. Furthermore, the connection part 62a of the output shaft 62 of the motor 60 is connected to the connection part 22a of the rotating shaft 22 of the kneading blade 20.

[0068] In this state, the rotational force of the motor 60 is transmitted to the mixing blade 20, causing the mixing blade 20 shown in Figure 4 to rotate alternately clockwise and counterclockwise. As a result, the amorphous refractory material, which is supplied to the hopper 12 through the raised hopper 50 shown in Figure 1 and to which water has been added, is mixed by the rotating mixing blade 20 (see Figure 4). The mixed material is then discharged from the discharge port 15a of the hopper 12 and flows through the chute 30.

[0069] On the other hand, by loosening the bolt 98a and detaching it from the nut 98b, and by detaching the connecting part 62a from the connecting part 22a, the motor frame 70 can be removed from the hopper 12. In this way, the motor frame 70 to which the motor 60 is attached and the hopper 12 are designed to be detachable.

[0070] [Mounting base legs 80, motor cover 90] -Base leg section 80- As shown in Figure 8(A), the frame leg portion 80 has a rectangular frame-shaped base portion 80a that extends in the depth direction and penetrates vertically, and a plurality of leg portions 80b that extend upward from each of the four corners of the base portion 80a. In addition, a mounting plate 82 is provided at the upper end of each leg portion 80b, with the thickness direction of the plate being vertical. Furthermore, a mounting hole 82a that penetrates vertically is formed in each mounting plate 82.

[0071] In this configuration, as shown in Figure 7, a bolt 98a, which is a fastener, is inserted from above into the mounting hole 74a of the motor base 70. Furthermore, the bolt 98a inserted into the mounting hole 74a is inserted into the mounting hole 82a of the base leg 80 shown in Figure 8(A). A nut 98b is then tightened onto the bolt 98a (see Figure 7) inserted into the mounting hole 82a. This attaches the base leg 80 to the motor base 70. The base leg 80 can be removed from the motor base 70 by loosening the bolt 98a and detaching it from the nut 98b. In this way, the motor base 70 to which the motor 60 is attached and the base leg 80 are designed to be detachable.

[0072] -Motor cover 90- As shown in Figure 8(B), the motor cover 90 has a main body portion 92 that extends in the depth direction and has a U-shaped cross-section with an open bottom, and mounting plates 94 attached to both ends of the main body portion 92 in the width direction.

[0073] The mounting plate 94 has its thickness oriented vertically and is rectangular when viewed from above. Each mounting plate 94 also has a mounting hole 94a that penetrates through in the vertical direction.

[0074] In this configuration, as shown in Figure 8(B), a bolt 98a, which is a fastener, is inserted from above into the mounting hole 94a of the motor cover 90. Furthermore, the bolt 98a inserted into the mounting hole 94a is inserted into the mounting hole 78 of the motor base 70 shown in Figure 7. Also, a nut 98b is tightened onto the bolt 98a inserted into the mounting hole 78 (see Figure 8(B)). This attaches the motor cover 90 to the motor base 70. The motor cover 90 can be removed from the motor base 70 by loosening the bolt 98a and detaching it from the nut 98b. In this way, the motor base 70 to which the motor 60 is attached and the motor cover 90 are designed to be detachable.

[0075] (Construction system for unshaped refractory materials 100) Next, the construction system 100 for monolithic refractories (hereinafter simply referred to as "construction system 100") will be described using Figures 9 and 10. As shown in Figure 9, the construction system 100 comprises a mixing device 10, an airflow conveying device 110, and a control unit 142 that controls each part. The airflow conveying device 110 also comprises a spraying machine 112, a water pump 122, and a cyclone 132, and conveys monolithic refractories by an airflow conveying method. Here, the airflow conveying method is a method of conveying monolithic refractories using compressed air.

[0076] [Spraying machine 112] The spraying machine 112 is equipped with an air compressor and uses compressed air pressure to transport the amorphous refractory material through the transport pipe 116 to the cyclone 132.

[0077] [Water pump 122] The water pump 122 is equipped with an impeller, and the centrifugal force generated by the rotation of the impeller transports water through the hose 126 to the cyclone 132. Furthermore, the water pump 122 transports a small amount of water through the hose 128 to the transport pipe 116 just before the cyclone 132.

[0078] [Cyclone 132] As shown in Figure 9, the cyclone 132 is positioned above the mixing device 10. As shown in Figure 10, the cyclone 132 comprises a hollow body 134 and a through pipe 136 that extends vertically through the top plate 134a of the body 134.

[0079] The main body 134 is funnel-shaped, narrowing at the bottom, with an outlet 134b formed at its lower end. Furthermore, the end of the transport pipe 116 is connected to the upper part of the main body 134, and the end of the hose 126 is connected to the lower part of the main body 134.

[0080] In this configuration, the amorphous refractory material, transported to the cyclone 132 by the spraying machine 112 (see Figure 9), flows spirally inside the main body 134, separating from the air. The separated air flows upward through the through-pipe 136 and is released into the atmosphere. Only the amorphous refractory material then falls and is discharged from the outlet 134b, and is supplied to the hopper 12 through the raised hopper 50 of the mixing device 10 (see Figure 9).

[0081] Here, water from hose 126 is blown out from the periphery of outlet 134b and added to the amorphous refractory material discharged from outlet 134b. This suppresses the amorphous refractory material discharged from outlet 134b from becoming dust, and the amorphous refractory material with added water is supplied to the mixing device 10.

[0082] [Control Unit 142] The control unit 142 shown in Figure 9 controls the water pump 122 based on the type of monolithic refractory material conveyed by the spraying machine 112 and the amount of monolithic refractory material conveyed, adjusting the amount of water added to the monolithic refractory material through the hose 128 and the amount of water supplied to the outlet 134b of the cyclone 132 through the hose 126.

[0083] Furthermore, the control unit 142 controls the motor 60 (see Figure 7) of the kneading device 10 and adjusts the rotation direction, speed, and rotation time of the kneading blade 20 shown in Figure 4 based on the amount of amorphous refractory material to which water has been added, supplied from the discharge port 132b of the cyclone 132.

[0084] (Construction methods for unshaped refractories) Next, a method for constructing monolithic refractories using the monolithic refractory construction system 100 will be described. Note that each component is operated or deactivated by the control unit 142.

[0085] In this embodiment, as shown in Figure 9, a construction method will be described, as an example, for constructing a refractory wall 206 inside a furnace 202 at a high elevation in a structure 200 that houses a furnace, using amorphous refractory material. The refractory wall 206 is a wall constructed by the method for constructing amorphous refractory material, and is constructed by pouring a mixed material, mixed by a mixing device 10, into a formwork 210a at the construction site 210.

[0086] Here, furnace 202 refers to furnaces in industrial facilities, boiler facilities, incineration facilities, steelmaking facilities, petroleum and chemical facilities, cement manufacturing facilities, etc.

[0087] The fire-resistant wall 206 is constructed by vibrating the mixed material, which has been mixed by the mixing device 10, with a vibrator to make it fluid, and then pouring it into the formwork 210a (vibration pouring construction). The entrance to the construction area 210 inside the furnace 202 is a manhole 202a with a diameter of 600 mm. In addition, other parts of the structure 200 that houses the furnace also have manholes 218a of a similar shape that serve as entrances to the furnace (see Figure 9).

[0088] First, the mixing device 10 is installed inside the furnace 202. Here, the manhole 202a, which is the entrance to the construction site 210, is a manhole 202a with a diameter of 600 mm. Therefore, the assembled mixing device 10 cannot pass through the manhole 202a. So, the mixing device 10 is disassembled into its individual components as shown in Figure 2. Then, each of the disassembled components is passed through the 600 mm diameter manhole 202a and transported into the furnace 202.

[0089] Furthermore, by assembling the components brought into the furnace 202, the mixing device 10 is installed near the construction site 210 inside the furnace 202. In this way, the mixing device 10 is installed near the construction site 210 (installation process). The spraying machine 112 and the water pump 122 are installed on the ground level (GL). Here, "near the construction site 210" means being closer to the construction site 210 than the entrance to the construction site 210 if the entrance to the construction site 210 is narrow.

[0090] Next, the control unit 142 operates the spraying machine 112 and the water pump 122. As a result, the spraying machine 112 air-transports the amorphous refractory material to the cyclone 132, and the water pump 122 transports water to the cyclone 132 (transportation process).

[0091] The amorphous refractory material, which has been air-conveyed to the cyclone 132, is separated from the air inside the main body 134 of the cyclone 132, and only the amorphous refractory material falls and is discharged from the outlet 134b. At this point, water from the hose 126 is blown out from the periphery of the outlet 134b and added to the amorphous refractory material being discharged from the outlet 134b. As a result, the amorphous refractory material with added water is supplied to the hopper 12 through the raised hopper 50 of the mixing device 10 (see Figure 9) (supply process).

[0092] Furthermore, the control unit 142 operates the mixing device 10. As a result, the rotational force of the motor 60 shown in Figure 1 is transmitted to the mixing blades 20 (see Figure 4), causing the mixing blades 20 to rotate alternately clockwise and counterclockwise. The amorphous refractory material to which water has been added is then mixed by the rotating mixing blades 20 (mixing process).

[0093] Furthermore, the mixed material is discharged from the discharge port 15a of the hopper 12 shown in Figure 1 and flows through the chute 30. The mixed material discharged from the discharge port 15a is poured into the formwork 210a of the fire-resistant wall 206 (pouring process). Then, as the mixed material poured into the formwork 210a hardens, the fire-resistant wall 206 is constructed.

[0094] (summary) As explained above, in the mixing device 10, the hopper 12, which has the mixing blades 20 installed inside, and the motor stand 70, to which the motor 60 is mounted, are arranged side by side in the depth direction. Furthermore, the hopper 12 and the motor stand 70 are designed to be detachable. This allows the disassembled mixing device 10 to be passed through a narrow entrance to the construction site 210, compared to using a mixing device that cannot be disassembled with tools, and thus the mixing device 10 can be installed closer to the construction site 210.

[0095] Furthermore, the kneading device 10 includes a chute 30 that can be disassembled relative to the hopper 12 or motor stand 70, hopper legs 40, a raised hopper 50 with a safety cover 46 attached, stand legs 80, and a motor cover 90. The chute 30, hopper legs 40, raised hopper 50 with safety cover 46 attached, stand legs 80, and motor cover 90 are examples of multiple other components.

[0096] Furthermore, each disassembled component is designed to pass through a manhole 202a with a diameter of 600 mm. This allows the disassembled mixing device 10 to be placed near the construction site 210 by passing it through the 600 mm diameter manhole 202a, compared to using a mixing device that cannot be disassembled with tools.

[0097] Furthermore, in the kneading device 10, the rotation shaft 22 of the kneading blade 20 and the output shaft 62 of the motor 60 extend in the depth direction, which is the direction in which the hopper 12 and the motor stand 70 are aligned. This allows the driving force of the motor 60 to be transmitted to the kneading blade 20 with a simpler configuration compared to the case where the rotation shaft and the output shaft extend in different directions.

[0098] Furthermore, in the kneading device 10, the rotating shaft 22 and the output shaft 62 are arranged on the same straight line. This allows the driving force of the motor 60 to be transmitted to the kneading blades 20 with a simpler configuration compared to the case where the rotating shaft and the output shaft are arranged parallel to each other.

[0099] Furthermore, according to the monolithic refractory construction system 100, the mixing device 10 mixes the monolithic refractory transported by the airflow conveying device 110 with water. This reduces the amount of work required to transport the monolithic refractory to the mixing device 10 compared to installing the mixing device 10 near the construction site 210 and transporting the monolithic refractory to the mixing device manually.

[0100] Furthermore, according to the monolithic refractory construction system 100, the airflow conveying device 110 is positioned above the mixing device 10 and includes a cyclone 132 that adds water to the pneumatically conveyed monolithic refractory and supplies it to the mixing device 10. This suppresses the scattering of the monolithic refractory as dust compared to when the monolithic refractory is supplied directly to the mixing device.

[0101] Furthermore, according to the construction method for monolithic refractories, a disassemblable mixing device 10 is installed near the construction site 210. This reduces the amount of work required to transport the monolithic refractories to the mixing device 10 compared to the case where the mixing device 10 is installed near the construction site 210 and the monolithic refractories are transported to the mixing device manually.

[0102] Furthermore, according to the method for constructing monomorphic refractories, water is added to the monomorphic refractories that have been transported to the top of the mixing device 10, and the monomorphic refractories with added water are supplied to the mixing device 10 below. This suppresses the scattering of monomorphic refractories as dust compared to when the monomorphic refractories are supplied directly to the mixing device.

[0103] Furthermore, according to the construction method for amorphous refractory materials, each disassembled component can be passed through a manhole 202a with a diameter of 600 mm, and a mixing device 10 can be installed near the construction site 210.

[0104] <Second Embodiment> Next, an example of a mixing apparatus, a refractory construction system, and a refractory construction method according to the second embodiment of this disclosure will be described with reference to Figures 12 and 13. The second embodiment will primarily describe the differences from the first embodiment.

[0105] As shown in Figure 12, the kneading apparatus 310 according to the second embodiment includes a hopper 312 in which kneading blades 20 are installed inside, and a chute 30 which constitutes a discharge passage for the kneading material discharged from the hopper 312.

[0106] Furthermore, the kneading device 310 includes a motor 360 that provides rotational force to the kneading blades 20, and a motor stand 340 that supports the hopper 312 and to which the motor 360 is mounted. In addition, the kneading device 310 includes a raised hopper 50 to which a safety cover 46 is attached. The motor stand 340 is an example of a stand.

[0107] Furthermore, the hopper 312, which has the mixing blades 20 installed inside, the chute 30, the motor stand 340 to which the motor 360 is mounted, and the raised hopper 50 to which the safety cover 46 is attached are all designed to be disassembled.

[0108] [Hopper 312, Mixing blade 20] -Hopper 312- As shown in Figure 12, the hopper 312 has a main body 14a, a closing plate 14b that closes the front end of the main body 14a in the depth direction, and a closing plate 314c that closes the rear (right side in the figure) end of the main body 14a in the depth direction. Furthermore, the hopper 312 has a pair of flange plates 16. In addition, the hopper 312 has two pairs of support parts 18 attached to both sides of the main body 14a in the width direction, arranged in the depth direction.

[0109] The closing plate 314c has a through hole (not shown) that supports the rotation shaft 22 of the kneading blade 20. Two support parts 18 are arranged on the front side in the depth direction, and two support parts 18 are arranged on the back side in the depth direction.

[0110] -Mixing blade 20- As shown in Figure 12, the kneading blade 20 is located inside the hopper 312, and the rotating shaft 22 of the kneading blade 20 protrudes from the closing plate 314c of the hopper 12 towards the back in the depth direction. A pulley 322a is provided at the protruding end of the rotating shaft 22, which can be connected to the output shaft 362 of the motor 360 via a pulley belt 380 (see Figure 13). The depth direction is an example of a crossing direction.

[0111] [Motor frame 340, motor 360] -Motor mount 340- As shown in Figure 12, the motor mount 340 has a rectangular frame-shaped base 340a that penetrates vertically and extends in the depth direction, and a plurality of legs 340b that extend upward from each of the four corners of the base 340a. Mounting plates 342 are provided at the upper end of each leg 340b, with the thickness direction of the plate being vertical. Furthermore, mounting holes 342a that penetrate vertically are formed in each mounting plate 342. The motor mount 340 also has a mounting frame 344 that is supported by the frame-shaped base 340a and to which the motor 360 is attached.

[0112] -Motor 360- The motor 360 is attached to the mounting frame 344 of the motor stand 340 using fasteners (not shown). The output shaft 362 of the motor 360 extends from the main body 360a of the motor 360 toward the rear in the depth direction. The output shaft 362 of the motor 360 and the rotation shaft 22 of the kneading blade 20 are arranged in parallel. Furthermore, a pulley 362a is provided at the tip of the output shaft 362, which can be connected to the rotation shaft 22 of the kneading blade 20 via a pulley belt 380 (see Figure 13). In this way, the pulley 362a, the pulley belt 380, and the pulley 322a function as transmission members that transmit the rotational force of the motor 360 to the kneading blade 20.

[0113] Furthermore, the hopper 312, in which the kneading blades 20 are located, and the motor stand 340, to which the motor 360 is mounted, are arranged side by side in the vertical direction, as shown in Figure 13. In other words, the kneading blades 20 and the motor 360 are arranged side by side in the vertical direction. The vertical direction is just one example of a direction.

[0114] In this configuration, a bolt 98a, which is a fastening device, is inserted from above into the mounting hole 19a of the hopper 312 shown in Figure 12. Furthermore, the bolt 98a inserted into the mounting hole 19a is inserted into the mounting hole 342a of the motor base 340. Then, a nut 98b is tightened onto the bolt 98a inserted into the mounting hole 342a. This attaches the hopper 312 to the motor base 340. The hopper 312 can be removed from the motor base 340 by loosening the bolt 98a and detaching it from the nut 98b. In this way, the motor base 340 to which the motor 360 is attached and the hopper 312 are designed to be detachable.

[0115] (summary) As explained above, in the kneading device 310, the rotation shaft 22 of the kneading blade 20 and the output shaft 362 of the motor 360 extend in the depth direction (intersecting direction) that intersects with the vertical direction (alignment direction) of the hopper 312 and the motor stand 340. This allows the driving force of the motor 360 to be transmitted to the kneading blade 20 with a simpler configuration compared to the case where the rotation shaft and the output shaft extend in different directions.

[0116] Furthermore, in the kneading device 310, the output shaft 362 of the motor 360 and the rotation shaft 22 of the kneading blade 20 are arranged in parallel. This makes it possible to reduce the size of the kneading device 310 in the depth direction (axial direction) compared to the case where the output shaft and the rotation shaft extend in the same straight line.

[0117] Although this disclosure has described in detail a particular embodiment, this disclosure is not limited to this embodiment, and it will be apparent to those skilled in the art that various other embodiments can be taken within the scope of this disclosure. For example, in the above embodiment, the manhole 202a, which is the entrance to the construction site 210 of the furnace 202, is circular with a diameter a1 of 600 mm, as shown in Figure 11(A). However, the entrance may be an elongated hole with a dimension a1 of 600 mm for the entrance 220a, as shown in Figure 11(B), or a rectangle (square, rectangle) with a dimension a1 of 600 mm for the entrance 230a, as shown in Figure 11(C). Each disassembled component can pass through the manhole 202a with a diameter of 600 mm, thereby allowing passage through the entrance shown in Figures 11(B) and 11(C).

[0118] In other words, the fact that each disassembled component can pass through a manhole 202a with a diameter of 600 mm in this embodiment does not limit the shape of the manhole that serves as the entrance to the construction site. The fact that each disassembled component can pass through a manhole 202a with a diameter of 600 mm means that it can also pass through entrances such as those shown in Figures 11(B) and 11(C).

[0119] Furthermore, although the above embodiment described a construction method in which the refractory wall 206 inside the furnace 202 in the high-altitude portion of the structure 200 housing the furnace is constructed using amorphous refractory material, it may also be a refractory wall inside the furnace in a low-altitude portion or other portion, and is not limited to the high-altitude portion. Moreover, it may be a construction target other than a refractory wall.

[0120] Furthermore, in the second embodiment described above, a pulley 362a, a pulley belt 380, and a pulley 322a were used as transmission members to transmit the rotational force of the motor 360 to the kneading blade 20, but multiple gears or the like may be used as transmission members. [Explanation of symbols]

[0121] 10 Mixing device 12 hoppers 20 kneading blades 22 Rotation axis 30. Chute (an example of other components) 40 Hopper leg section (an example of other components) 50. Raised hopper (an example of other components) 60 motor 62 Output shaft 70 Motor mount (an example of a mount) 80. Base legs (an example of other components) 90 Motor cover (an example of other components) 100 Construction system for unshaped refractories 110 Airflow conveying device 132 Cyclone 202 Furnace 202a Manhole (Example of an entrance) 206 Fireproof wall 210 Construction Sites 210a formwork 310 Mixing device 340 Motor mount (an example of a mount) 360 motor 362 Output shaft

Claims

1. A hopper with mixing blades installed inside that rotate to mix amorphous refractory material and liquid, The system comprises a frame positioned in the same direction as the hopper and detachable from the hopper, and to which a motor is attached that provides rotational force to the kneading blades, The rotation axis of the kneading blade and the output shaft of the motor extend in the same direction and are arranged on the same straight line. The rotation shaft of the kneading blade and the output shaft of the motor are designed to be detachable. Mixing device.

2. The hopper or the frame comprises several other components that are detachable from it, In its disassembled state, the hopper, the frame, and the multiple other components are designed to pass through a 600 mm diameter inlet to a construction site inside a furnace of industrial equipment, boiler equipment, incineration equipment, steelmaking equipment, petroleum / chemical equipment, or cement manufacturing equipment. The kneading apparatus according to claim 1.

3. A hopper with mixing blades installed inside that rotate to mix amorphous refractory material and liquid, The system comprises a frame positioned in the same direction as the hopper and detachable from the hopper, and to which a motor is attached that provides rotational force to the kneading blades, The rotation axis of the kneading blade and the output shaft of the motor extend in a direction that intersects with respect to the aforementioned one direction and are arranged parallel to each other. In the aforementioned intersecting direction, the motor and the kneading blade overlap, The rotation shaft of the kneading blade and the output shaft of the motor are connected via a transmission member that transmits the rotational force of the motor to the kneading blade. Mixing device.

4. comprising a plurality of other members that are detachable from the hopper or the frame, In its disassembled state, the hopper, the frame, and the multiple other components are designed to pass through a 600 mm diameter inlet to a construction site inside a furnace of industrial equipment, boiler equipment, incineration equipment, steelmaking equipment, petroleum / chemical equipment, or cement manufacturing equipment. The kneading apparatus according to claim 3.

5. A pulley belt is used as the transmission member, The kneading apparatus according to claim 3.

6. An airflow conveying device that uses airflow to convey irregularly shaped refractory materials, A kneading apparatus according to any one of claims 1 to 5 for kneading an amorphous refractory material and a liquid conveyed by the airflow conveying device, A construction system for amorphous refractory materials.

7. The airflow conveying device is positioned above the mixing device and includes a cyclone that adds liquid to the air-conveyed amorphous refractory material and supplies it to the mixing device. A construction system for amorphous refractory materials according to claim 6.

8. The mixing apparatus described in any one of Claims 1 to 5 is installed near the construction site inside the furnace of an industrial facility, boiler facility, incineration facility, steelmaking facility, petroleum / chemical facility, or cement manufacturing facility. Unshaped refractory materials are transported by air using an airflow conveying method. The amorphous refractory material, which is conveyed by air using an airflow conveying method and to which liquid has been added, is mixed in the aforementioned mixing device. A method for constructing an unshaped refractory material, comprising pouring the mixed material, which has been mixed in the aforementioned mixing device, into a formwork at the construction site to construct the unshaped refractory material.

9. The amorphous refractory material is transported to the top of the mixing apparatus by an airflow transport method. A liquid is added to the amorphous refractory material that has been transported to the upper part of the mixing device, and the amorphous refractory material with the added liquid is supplied to the mixing device below. A method for constructing an amorphous refractory material according to claim 8.

10. The entrance to the aforementioned construction site is said to have a diameter of 600 mm. The kneading device is disassembled and passed through the inlet, and then assembled inside the furnace, thereby allowing the kneading device to be installed near the construction site. A method for constructing an amorphous refractory material according to claim 8.

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