Raw material mixing device for refractory production

Abstract

The application relates to the technical field of mixing equipment, and particularly discloses a raw material mixing device for refractory material production, which comprises a tank body, a plurality of bulk material boxes are arranged in the tank body and can rotate in the tank body, each bulk material box is composed of a frame body and a sieve plate, the sieve plate is fixedly installed at the bottom of the frame body and is used for uniformly feeding materials, a baffle is arranged in the frame body, can slide in the frame body to change an inclination angle and is used for shielding the sieve plate, and a mesh plate is arranged between two adjacent frame bodies; the raw material mixing device for refractory material production can uniformly feed raw materials into the tank body through the rotation of the bulk material boxes, the proportion of the feeding rates of different bulk material boxes can be kept consistent with the proportion of raw materials through the adjustment of the discharging flow of the bulk material boxes, and then the bulk material boxes can preliminarily mix a plurality of materials in a relatively uniform manner in the discharging stage.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and more specifically to a raw material mixing device for refractory material production. Background Technology

[0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness of not less than 1580℃. They have the characteristics of high temperature resistance, thermal shock resistance, and chemical corrosion resistance. They are widely used in high-temperature industrial fields such as metallurgy, building materials, power, and chemical industry. In the production of refractory materials, it is necessary to use mixing equipment to uniformly mix various raw materials in a specific ratio.

[0003] In existing refractory material mixing equipment, raw materials are mostly added at fixed locations in a single operation. After addition, the raw materials are unevenly distributed inside the equipment, and the concentration difference between different areas is too large. This easily leads to stratification and accumulation of raw materials after addition, resulting in a longer subsequent mixing cycle. Furthermore, the mixing components are mostly in fixed positions during raw material mixing, resulting in fixed mixing height and position. This leads to large dead zones in the mixing process, and the raw materials can only be stirred at a fixed height. The turning effect between upper and lower layers of raw materials is poor, and the stratification phenomenon is more serious, affecting the mixing efficiency and quality of the raw materials. Summary of the Invention

[0004] This invention provides a raw material mixing device for refractory material production, aiming to solve the problems in related technologies where raw materials are mostly added at a fixed position at one time, resulting in uneven distribution of raw materials inside the equipment, and the mixing height and position of the mixing components are fixed during raw material mixing, leading to poor turning effect between upper and lower layers of raw materials.

[0005] The raw material mixing device for refractory material production of the present invention includes a tank body, a plurality of bulk material boxes are provided in the tank body, and the bulk material boxes are rotatable in the tank body. Each bulk material box is composed of a frame and a sluice plate. The sluice plate is fixedly installed at the bottom of the frame body for dispersing and feeding materials. A baffle is provided in the frame body, which can slide and change the tilt angle in the frame body to block the sluice plate. A mesh plate is provided between two adjacent frames.

[0006] The tank has a rotating central shaft inside, on which a connecting cylinder is fixedly installed. The connecting cylinder can rotate with the central shaft inside the tank. The top of the connecting cylinder passes through the mesh plate and extends above it. The connecting cylinder is equipped with an auger conveyor shaft inside, which can rotate with the movement of the connecting cylinder and push the material inside the connecting cylinder to rise.

[0007] A stirring frame is slidably mounted on the outside of the connecting cylinder, which can slide up and down on the outside of the connecting cylinder as it rotates. The stirring frame is equipped with a stirring shaft, which can stir the material as the auger conveyor shaft rotates.

[0008] Preferably, the mesh plate is provided with an installation shaft, and the installation shaft can rotate relative to the mesh plate. A bevel gear is fixedly installed at one end of the installation shaft, and a bevel gear ring that meshes with the bevel gear is coaxially fixed on the auger conveyor shaft. A transmission gear is fixedly installed at the other end of the installation shaft, and a transmission gear ring that meshes with the transmission gear is coaxially fixed on the inner wall of the tank.

[0009] Preferably, the stirring rack consists of a ring and crossbars. The ring is slidably mounted on the outside of the connecting cylinder, and the crossbars are horizontally fixed to the side wall of the ring.

[0010] Preferably, a connecting rod is fixedly installed on the ring sleeve, a sliding shaft is fixedly installed at the end of the connecting rod, a guide ring is fixedly installed on the inner wall of the tank, an undulating groove is opened in the guide ring, and the end of the sliding shaft is slidably disposed in the undulating groove.

[0011] Preferably, the stirring shaft consists of a main shaft and side rods. The main shaft is rotatably mounted on the end of the crossbar. The top end of the main shaft passes through the mesh plate and extends above it, and can slide up and down inside the mesh plate. The side rods are located inside the tank and fixed to the main shaft.

[0012] Preferably, a gear shaft is fixedly installed at the top end of the main shaft, and a drive gear that meshes with the gear shaft is coaxially fixedly installed at the top end of the auger conveyor shaft, and the thickness of the gear shaft is greater than the thickness of the drive gear.

[0013] Preferably, the upper and lower ends of the baffle are respectively rotatably equipped with an upper slider and a lower slider, the inner wall of the frame is provided with a vertical groove, the upper slider is slidably assembled inside the vertical groove, the slug plate is provided with a horizontal groove, the lower slider is slidably assembled inside the horizontal groove, and the slug plate is also provided with multiple sets of slug holes.

[0014] Preferably, a side plate located on the side of the transverse groove is fixedly installed at the bottom of the sluice plate, and a screw is rotatably mounted on the side plate. A sliding sleeve is threadedly connected to the screw, and the sliding sleeve is fixed to the lower slider.

[0015] Preferably, the top of the tank is provided with a top plate, and multiple storage boxes are provided on the top plate. Each storage box corresponds to a multiple bulk material box. Each storage box is provided with a solenoid valve, which can be opened when the corresponding bulk material box moves below it and closed when the bulk material box moves away from the storage box.

[0016] Preferably, the bottom of the tank is provided with a discharge trough, and a partition plate inserted into the tank is provided above the discharge trough.

[0017] Beneficial effects:

[0018] In use, this invention utilizes a rotating bulk material bin to evenly distribute raw materials into the tank. By adjusting the flow rate of the bulk material bins, the feeding rate ratio between different bins is kept consistent with the raw material proportions. This allows for relatively uniform initial mixing of various materials during the feeding stage, effectively preventing uneven distribution, excessive concentration differences in different areas, and stratification within the tank. This results in more efficient and faster mixing. Furthermore, the combination of top-and-bottom tumbling and moving undulating agitation during mixing ensures that lower layers of material are effectively tumbled to the upper layers, and that different layers of material are effectively mixed. This increases the mixing coverage area, reduces dead zones, effectively prevents stratification, improves the mixing effect, and significantly shortens the overall mixing cycle. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 This is the present invention. Figure 2 A magnified structural diagram of point A in the middle.

[0022] Figure 4 This is the present invention. Figure 2 A magnified structural diagram at point B in the middle.

[0023] Figure 5 This is a perspective view of the bulk material box inside the tank of the present invention.

[0024] Figure 6 This is the present invention. Figure 5 Top view.

[0025] Figure 7 This is a cross-sectional view of the bulk material box of the present invention.

[0026] Figure 8 This is a perspective view of the stirring rack and stirring shaft of the present invention.

[0027] Figure label:

[0028] 10. Tank body; 11. Top plate; 12. Storage bin; 13. Discharge chute; 14. Baffle plate; 20. Bulk bin; 21. Frame; 211. Vertical chute; 22. Slot plate; 221. Slot; 222. Horizontal chute; 23. Mesh plate; 231. Support base; 30. Mixing assembly; 31. Central shaft; 311. Push plate; 32. Connecting cylinder; 321. Notch; 322. Screw conveyor shaft; 323. Drive gear; 33. Mixing frame; 331. Ring sleeve; 332. Crossbar; 3 4. Stirring shaft; 341. Main shaft; 342. Side rod; 343. Gear shaft; 40. Lifting mechanism; 41. Connecting rod; 42. Guide ring; 421. Undulated groove; 43. Sliding shaft; 50. Transmission assembly; 51. Mounting shaft; 52. Bevel gear; 53. Bevel gear ring; 54. Transmission gear; 55. Transmission gear ring; 60. Flow regulating mechanism; 61. Baffle; 62. Upper slider; 63. Lower slider; 70. Pushing assembly; 71. Side plate; 72. Screw; 73. Sliding sleeve. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figures 1 to 8 As shown, the raw material mixing device for refractory material production of the present invention includes a tank 10, a bulk material box 20, a stirring assembly 30, a lifting mechanism 40, a transmission assembly 50, a flow regulating mechanism 60, and a pushing assembly 70. Multiple bulk material boxes 20 are arranged inside the tank 10 and can rotate to discharge materials inside the tank 10. The discharge flow rate of the bulk material box 20 can be adjusted by the pushing assembly 70 in conjunction with the flow regulating mechanism 60 so that the dispersing rate of different materials can be kept consistent with the proportion of raw materials and evenly dispersed into the tank 10 for preliminary mixing. The stirring assembly 30 is arranged inside the tank 10 and can move and undulate to stir the materials with the cooperation of the transmission assembly 50, while turning the materials in the upper and lower layers.

[0031] refer to Figure 1 and Figure 2The top of the tank 10 is provided with a top plate 11, on which multiple storage boxes 12 are provided for storing raw materials. The multiple storage boxes 12 correspond one-to-one with multiple bulk material boxes 20. Each storage box 12 is provided with a solenoid valve, which can be opened when the corresponding bulk material box 20 moves below it to fill the material, and can be closed when the bulk material box 20 moves away from the storage box 12 to stop the material discharge. The bottom of the tank 10 is provided with a discharge chute 13, and a partition 14 is provided above the discharge chute 13 and inserted into the tank 10 to close the discharge chute 13. By pulling the partition 14 out of the tank 10, the closure of the discharge chute 13 can be released, and then the material can be discharged.

[0032] refer to Figure 2 , Figure 5 , Figure 6 as well as Figure 7 The bulk material box 20 consists of a frame 21 and a sluice plate 22. The sluice plate 22 is fixedly installed at the bottom of the frame 21, and multiple sets of sluice holes 221 are opened inside the sluice plate 22 so that the material entering the frame 21 can be dispersed into the tank 10 through the sluice holes 221 of the sluice plate 22 to complete the feeding. A mesh plate 23 is fixedly installed between two adjacent frames 21 to disperse the material during the turning process.

[0033] refer to Figures 5-7 The flow regulating mechanism 60 includes a baffle 61, an upper slider 62, and a lower slider 63. The baffle 61 is inclinedly disposed inside the frame 21, with its upper end close to the inner wall of the frame 21 and its lower end close to the drain plate 22. The upper slider 62 and the lower slider 63 are rotatably connected to the upper and lower ends of the baffle 61, respectively. A vertical groove 211 is provided on the inner wall of the frame 21, and the upper slider 62 is slidably assembled inside the vertical groove 211. A horizontal groove 222 is provided inside the drain plate 22, and the lower slider 63 is slidably assembled inside the horizontal groove 222. By sliding the lower slider 63 in the horizontal groove 222, the bottom end of the baffle 61 moves on the drain plate 22, while the upper slider 62 slides in the vertical groove 211, causing the inclination angle of the baffle 61 to change, thereby changing the area of ​​the baffle 61 covering the drain hole 221, and thus regulating the material discharge flow rate.

[0034] refer to Figure 6 and Figure 7The pushing component 70 includes a side plate 71, a screw 72, and a sliding sleeve 73. The side plate 71 is fixedly installed at the bottom of the slot 22 and located on the side of the transverse groove 222. The screw 72 is rotatably mounted on the side plate 71. The sliding sleeve 73 is threaded to the outside of the screw 72 and fixed to the lower slider 63, so that when the screw 72 rotates, it can push the sliding sleeve 73 to move the lower slider 63, thereby changing the tilt angle of the baffle 61 and adjusting the discharge flow of the bulk material box 20. An adjusting motor is provided at the end of the screw 72, which can drive the screw 72 to rotate and adjust the discharge flow. An adjusting motor is provided at the end of the screw 72 and fixed on the side plate 71, which can drive the screw 72 to rotate and thereby adjust the tilt angle of the baffle 61.

[0035] refer to Figure 2 and Figure 8 The mixing assembly 30 includes a central shaft 31, a connecting cylinder 32, a mixing frame 33, and a mixing shaft 34. The central shaft 31 is coaxially rotatably mounted inside the tank 10. The connecting cylinder 32 is vertically fixed on the central shaft 31, and its top end is open. The mixing frame 33 is slidably mounted on the connecting cylinder 32. The mixing shaft 34 is mounted on the mixing frame 33. The rotation of the central shaft 31 drives the connecting cylinder 32 to move inside the tank 10. The connecting cylinder 32 drives the mixing frame 33 and the mixing shaft 34 to move inside the tank 10, thereby agitating and mixing the material. A drive motor is installed at the top of the central shaft 31 above the top plate 11 to drive the rotation of the central shaft 31. A push plate 311 is also fixedly installed on the central shaft 31. The push plate 311 is set close to the bottom wall of the tank 10 and can push the material into the discharge trough 13 during discharge.

[0036] refer to Figure 2 , Figure 5 as well as Figure 8 The top of the connecting cylinder 32 passes through the mesh plate 23 and extends above it. A notch 321 is provided on the side wall of the connecting cylinder 32 so that the connecting cylinder 32 is connected to the tank 10, allowing the material to enter the interior of the connecting cylinder 32. The connecting cylinder 32 is equipped with a rotating auger conveyor shaft 322. When the connecting cylinder 32 rotates with the central shaft 31, the auger conveyor shaft 322 rotates inside the connecting cylinder 32, thereby conveying the material entering the connecting cylinder 32 upward and discharging it from the top of the connecting cylinder 32 to the top of the mesh plate 23, thus effectively turning the material in the tank 10 between the upper and lower layers.

[0037] refer to Figure 2 and Figure 8 The stirring frame 33 is composed of a ring 331 and a crossbar 332. The ring 331 is slidably mounted on the outside of the connecting cylinder 32, and the crossbar 332 has multiple transverse fixed to the side wall of the ring 331.

[0038] refer to Figure 2 and Figure 8The stirring shaft 34 consists of a main shaft 341 and a side rod 342. The main shaft 341 is rotatably mounted on the end of the crossbar 332. The top end of the main shaft 341 passes through the mesh plate 23 and extends above it, and can slide up and down inside the mesh plate 23. The side rod 342 is located inside the tank 10 and is fixed to the main shaft 341, so that when the stirring shaft 34 rotates, the side rod 342 can stir and mix the material.

[0039] refer to Figure 3 , Figure 5 as well as Figure 8 A gear shaft 343 is fixedly installed at the top of the main shaft 341, and a drive gear 323 that meshes with the gear shaft 343 is coaxially fixedly installed at the top of the auger conveyor shaft 322. The thickness of the gear shaft 343 is greater than that of the drive gear 323, so that when the auger conveyor shaft 322 rotates, the drive gear 323 can drive the gear shaft 343 to rotate, thereby causing the main shaft 341 to rotate. Furthermore, during the lifting and lowering of the main shaft 341, the gear shaft 343 can always remain meshed with the drive gear 323, without affecting the rotation of the main shaft 341.

[0040] refer to Figure 4 and Figure 8 The lifting mechanism 40 includes a connecting rod 41, a guide ring 42, and a sliding shaft 43. The connecting rod 41 is fixedly installed on the ring sleeve 331, and the guide ring 42 is fixedly installed on the inner wall of the tank 10. A wave-shaped undulating groove 421 is provided in the guide ring 42. The end of the sliding shaft 43 is slidably disposed in the undulating groove 421, and the other end of the sliding shaft 43 is fixed to the connecting rod 41. When the stirring frame 33 moves with the connecting cylinder 32, the connecting rod 41 can slide the sliding shaft 43 in the undulating groove 421. The undulating groove 421 guides the sliding shaft 43 to rise and fall, thereby driving the connecting rod 41 and the stirring frame 33 to rise and fall. This allows the stirring shaft 34 to perform better undulating stirring in the tank 10, increasing the stirring range and reducing the stirring dead angle.

[0041] refer to Figure 3 , Figure 5 as well as Figure 6The transmission assembly 50 includes a mounting shaft 51, a bevel gear 52, a bevel gear ring 53, a transmission gear 54, and a transmission gear ring 55. The mounting shaft 51 is arranged on the mesh plate 23 along the radial direction of the tank body 10 and can rotate relative to the mesh plate 23. The bevel gear 52 is fixedly mounted on the end of the mounting shaft 51. The bevel gear ring 53 is coaxially fixed on the auger conveyor shaft 322 and meshes with the bevel gear 52. The transmission gear 54 is fixedly mounted on the end of the mounting shaft 51 away from the bevel gear 52. The transmission gear ring 55 is coaxially fixed to the inner wall of the tank 10 and meshes with the transmission gear 54, so that when the connecting cylinder 32 pushes the screen plate 23 to move, the transmission gear 54 can be driven to rotate by the transmission gear ring 55, so that the mounting shaft 51 rotates on the screen plate 23, and the bevel gear 52 pushes the bevel gear ring 53 to make the auger conveyor shaft 322 rotate synchronously, and then the conveyed material is lifted in the connecting cylinder 32 to complete the turning. A support seat 231 is fixedly installed on the screen plate 23, and the mounting shaft 51 is rotatably assembled in the support seat 231.

[0042] Working principle: By rotating the screw 72, the sliding sleeve 73 is pushed to move the lower slider 63. The lower slider 63 slides in the horizontal groove 222, causing the bottom end of the baffle 61 to move on the sluice plate 22. At the same time, the upper slider 62 slides in the vertical groove 211, which changes the tilt angle of the baffle 61, thereby changing the area of ​​the baffle 61 blocking the sluice hole 221, and thus adjusting the material discharge flow rate. In this way, the discharge flow rate of multiple bulk material boxes 20 is adjusted according to the mixing ratio of different materials. Then, when the bulk material box 20 moves to the bottom of the corresponding storage box 12, the solenoid valve opens to fill the bulk material box 20 with material.

[0043] The drive shaft 31 rotates, causing the connecting cylinder 32 to rotate within the tank 10. This pushes the mesh plate 23, causing the bulk material box 20 to rotate and discharge materials. This allows various materials to be evenly discharged according to the mixing ratio. Simultaneously, the transmission gear ring 55 drives the transmission gear 54, which moves with the connecting cylinder 32, to rotate. This causes the mounting shaft 51 to rotate on the mesh plate 23. The bevel gear 52 pushes the bevel gear ring 53 to rotate the auger conveyor shaft 322 synchronously. This, in turn, pushes the material entering the connecting cylinder 32 to rise, allowing the material to be discharged from the top of the connecting cylinder 32 onto the mesh plate 23 and then dispersed onto the upper layer of materials, thus completing the turning of materials between the upper and lower layers.

[0044] While the auger conveyor shaft 322 rotates, the drive gear 323 drives the gear shaft 343 to rotate, so that the main shaft 341 rotates. The side rod 342 rotates to stir the material, which effectively moves and stirs the material in the tank 10. At the same time, when the stirring frame 33 moves with the connecting cylinder 32, the connecting rod 41 can slide the sliding shaft 43 in the undulating groove 421. The undulating groove 421 guides the sliding shaft 43 to rise and fall, which in turn drives the connecting rod 41 and the stirring frame 33 to rise and fall. This causes the stirring shaft 34 to rise and fall while stirring the material, so that the side rod 342 can stir in an undulating manner.

[0045] In this invention, the rotating material hopper 20 distributes the raw materials evenly into the tank 10. By adjusting the discharge flow rate of the material hopper 20, the ratio of the discharge rates between different material hoppers 20 is kept consistent with the proportion of the raw materials. This allows for relatively uniform initial mixing of various materials during the discharge stage, effectively preventing uneven distribution, excessive concentration differences in different areas, and stratification within the tank 10. This makes the mixing of materials more efficient and faster. Furthermore, the combination of top-and-bottom turning and moving undulating stirring during the mixing process allows the lower layer of material to be turned upwards effectively, and different layers of material can be effectively stirred. This increases the stirring coverage area, reduces dead zones, effectively prevents stratification, improves the mixing effect, and significantly shortens the overall mixing cycle.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A raw material mixing device for refractory material production, comprising a tank (10), characterized in that, Multiple bulk material boxes (20) are provided inside the tank (10), and the bulk material boxes (20) can rotate inside the tank (10). Each bulk material box (20) is composed of a frame (21) and a sluice plate (22). The sluice plate (22) is fixedly installed at the bottom of the frame (21) for dispersing and feeding materials. A baffle (61) is provided inside the frame (21), which can slide inside the frame (21) to change the tilt angle and is used to block the sluice plate (22). A mesh plate (23) is provided between two adjacent frames (21). The tank body (10) is equipped with a central shaft (31) for rotation. A connecting cylinder (32) is fixedly installed on the central shaft (31) and can rotate with the central shaft (31) inside the tank body (10). The top of the connecting cylinder (32) passes through the mesh plate (23) and extends above it. An auger conveyor shaft (322) is provided inside the connecting cylinder (32) and can rotate with the movement of the connecting cylinder (32) to push the material inside the connecting cylinder (32) to rise. A stirring frame (33) is slidably mounted on the outside of the connecting cylinder (32), which can slide up and down on the outside of the connecting cylinder (32) as the connecting cylinder (32) rotates. A stirring shaft (34) is provided on the stirring frame (33), which can stir the material as the auger conveyor shaft (322) rotates. The stirring rack (33) is composed of a ring (331) and a crossbar (332). The ring (331) is slidably mounted on the outside of the connecting cylinder (32), and the crossbar (332) has multiple transversely fixed to the side wall of the ring (331). A connecting rod (41) is fixedly installed on the ring (331), and a sliding shaft (43) is fixedly installed at the end of the connecting rod (41). A guide ring (42) is fixedly installed on the inner wall of the tank (10), and an undulating groove (421) is opened in the guide ring (42). The end of the sliding shaft (43) is slidably arranged in the undulating groove (421). The stirring shaft (34) consists of a main shaft (341) and a side rod (342). The main shaft (341) is rotatably mounted on the end of the cross rod (332). The top end of the main shaft (341) passes through the mesh plate (23) and extends above it, and can slide up and down inside the mesh plate (23). The side rod (342) is located inside the tank (10) and is fixed to the main shaft (341). A gear shaft (343) is fixedly installed at the top end of the main shaft (341), and a drive gear (323) that meshes with the gear shaft (343) is fixedly installed coaxially at the top end of the auger conveyor shaft (322), and the thickness of the gear shaft (343) is greater than the thickness of the drive gear (323). The upper and lower ends of the baffle (61) are respectively rotatably equipped with an upper slider (62) and a lower slider (63). A vertical groove (211) is provided on the inner wall of the frame (21). The upper slider (62) is slidably assembled inside the vertical groove (211). A horizontal groove (222) is provided inside the sluice plate (22). The lower slider (63) is slidably assembled inside the horizontal groove (222). Multiple sets of sluice holes (221) are also provided inside the sluice plate (22). The top of the tank (10) is provided with a top plate (11), and multiple storage boxes (12) are provided on the top plate (11). The multiple storage boxes (12) correspond one-to-one with multiple bulk material boxes (20). Each storage box (12) is provided with a solenoid valve. The solenoid valve can be opened when the corresponding bulk material box (20) moves below it and closed after the bulk material box (20) moves away from the storage box (12).

2. The raw material mixing device for refractory material production according to claim 1, characterized in that, The mesh plate (23) is provided with an installation shaft (51), and the installation shaft (51) can rotate relative to the mesh plate (23). A bevel gear (52) is fixedly installed at the end of the installation shaft (51). A bevel gear ring (53) that meshes with the bevel gear (52) is coaxially fixed on the auger conveyor shaft (322). A transmission gear (54) is fixedly installed at the other end of the installation shaft (51). A transmission gear ring (55) that meshes with the transmission gear (54) is coaxially fixed on the inner wall of the tank (10).

3. The raw material mixing device for refractory material production according to claim 1, characterized in that, The bottom of the sluice plate (22) is fixedly installed with a side plate (71) located on the side of the transverse groove (222). A screw (72) is rotatably mounted on the side plate (71). A sliding sleeve (73) is threadedly connected to the screw (72), and the sliding sleeve (73) is fixed to the lower slider (63).

4. The raw material mixing apparatus for refractory material production according to any one of claims 1-3, characterized in that, The bottom of the tank (10) is provided with a discharge trough (13), and a partition (14) inserted into the tank (10) is provided above the discharge trough (13).

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