A central drive conveying device for the feed end of a rod mill

Abstract

The application discloses a center transmission conveying device for a rod mill feeding end and relates to the technical field of rod mills.The center transmission conveying device comprises a power shaft, a spiral conveying mechanism, a conveying shell and a solid material feeding mechanism, the tail end of the power shaft is connected with a driving mechanism, the other end of the power shaft is connected with a turbine connecting disc, a turbine assembly is fixed to the inner front side of the turbine connecting disc, a turbine shell is fixed to the rear side of the turbine connecting disc, and a plurality of material lifting shells are fixed in the turbine shell.The power shaft is connected with the driving mechanism at one end, the other end of the power shaft is directly connected with the turbine connecting disc, the turbine connecting disc is connected with the inner cylinder end cover of the mill, the power of the driving mechanism can be directly transmitted to the inner cylinder of the mill through the power shaft, thereby center transmission is realized, power loss is reduced, energy consumption is reduced, the spiral conveying mechanism for feeding the material is connected with the power shaft, feeding and driving can be realized at the same time, and power consumption is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of rod mill technology, and in particular relates to a central drive conveying device for the feed end of a rod mill. Background Technology

[0002] The power of the rod mill is mainly composed of a drive mechanism and a gear ring structure, which drives the inner cylinder to rotate. However, the gear ring drive in the transmission mechanism will cause some waste of power consumption, resulting in a large energy consumption problem. If the drive mechanism acts directly on the inner cylinder, energy consumption can be reduced.

[0003] Meanwhile, since the rod mill needs to input grinding materials and auxiliary materials (additives, water, etc.) into the inner cylinder during operation, and the grinding media steel rods will be worn out during the grinding process, it is necessary to frequently remove the fine steel rods that have been ground to a certain degree and add new steel rods. If the discharge section is used as the transmission end, then the feeding end needs to be disassembled every time steel rods are added or removed. The feeding section involves many sealing devices, and the sealing effect is greatly reduced every time it is disassembled and reassembled, causing the machine to become unusable. Therefore, designing a device at the material feeding end that can transmit power and ensure that the material enters the cylinder normally is a problem that needs to be solved by those skilled in the art.

[0004] For feeding grinding materials, liquid materials can be controlled simply by the pump body. However, for feeding solid materials, if the power shaft and material feeding are integrated, the grinding material will fall directly onto the power shaft, affecting its surface and stability. Similarly, the feeding speed and amount of grinding material need to be controlled; otherwise, problems such as inlet blockage or excessive pressure on the screw conveyor mechanism may occur, affecting the normal use of the equipment. Therefore, designing a highly stable and smooth solid material feeding mechanism for use in a central drive conveyor is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a central transmission conveying device for the feed end of a rod mill. By connecting one end of the power shaft to the drive mechanism and the other end of the power shaft directly to the turbine connecting plate, and connecting the turbine connecting plate to the inner cylinder end cover of the mill, the power of the drive mechanism can be directly transmitted from the power shaft to the inner cylinder of the mill, thereby realizing central transmission, reducing power loss and energy consumption. At the same time, by connecting the screw conveyor mechanism for material feeding to the power shaft, material feeding and driving can be carried out simultaneously, further reducing power consumption.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a central transmission conveying device for the feed end of a rod mill, comprising a power shaft, a screw conveying mechanism, a conveying housing, and a solid material feeding mechanism;

[0008] The tail end of the power shaft is connected to a drive mechanism, and the other end of the power shaft is connected to a turbine connecting plate. A turbine assembly is fixed to the front side of the turbine connecting plate, and a turbine housing is fixed to the rear side of the turbine connecting plate.

[0009] The turbine housing contains a plurality of material lifting shells, and the turbine connecting plate is provided with a plurality of rear discharge ports. The plurality of material lifting shells are respectively connected to the turbine assembly through the plurality of rear discharge ports.

[0010] The screw conveyor mechanism is located on the rear side of the turbine housing and fixed on the power shaft. The conveyor housing is sleeved on the outside of the screw conveyor mechanism, and both ends of the conveyor housing are rotatably connected to the turbine housing and the power shaft, respectively.

[0011] The conveying housing consists of an upper shell and a lower shell. The upper shell has a liquid inlet at the top and a fixed seat at the bottom. A 90-degree arc-shaped pipe is fixedly connected to the outer side of the tail end of the lower shell.

[0012] The solid material feeding mechanism includes a fixed frame and a buffer bin;

[0013] The fixing frame is set on the outside of the tail end of the conveying shell, the buffer bin is fixed on the top of the fixing frame, the bottom end of the buffer bin is connected to a constricted tube, and a telescopic tube is connected between the constricted tube and the arc-shaped tube.

[0014] An upper sealing plate is fixed in the middle of the buffer compartment. The upper sealing plate is a semi-circular plate. A lower sealing plate is fixed at the bottom of the buffer compartment.

[0015] A vertical cylinder is rotatably connected between the upper sealing plate and the lower sealing plate. Several partitions are fixed inside the vertical cylinder, and a fan-shaped cavity is formed between two adjacent partitions. A fan-shaped opening that matches the fan-shaped cavity is opened on the lower sealing plate. An infrared ranging sensor is embedded in the bottom surface of the upper sealing plate, and the infrared ranging sensor is located directly above the fan-shaped opening.

[0016] The buffer compartment is equipped with a rotary drive connected to the vertical cylinder transmission on its outer side.

[0017] Furthermore, the two ends of the vertical cylinder are rotatably connected to the buffer compartment via slewing bearings, a toothed ring is fixed on the circumferential side of the vertical cylinder, and a clearance opening is provided on the wall of the buffer compartment.

[0018] Furthermore, the rotary drive includes a geared motor, the output end of which is fixed with a gear. The geared motor is fixed to the outside of the buffer compartment, and the gear meshes with the gear ring after passing through the clearance opening.

[0019] Furthermore, a rear flange is provided at the edge of the turbine connecting plate, and a mill inner cylinder connecting flange is connected to the front side of the turbine connecting plate through the cylinder body. A shaft connecting part is provided at the center of the turbine connecting plate, and the end of the power shaft is fixed in the shaft connecting part.

[0020] Furthermore, the turbine housing includes an outer casing and an inner liner. The outer casing has an outer flange on its front side that connects to the rear flange. The inner liner is movably disposed inside the outer casing. An mounting plate is fixed on the front side of the inner liner. The mounting plate is fixed to the turbine connecting plate by fasteners. The inner liner is composed of four sub-shells with identical structural features. The mounting plate of each sub-shell is a fan-shaped plate. Several material lifting shells are respectively fixed inside the mounting plates of several sub-shells. A feed inlet is provided on the outer side of the material lifting shell away from the axis of the inner liner. A front discharge port connected to the rear discharge port is provided on the mounting plate of each sub-shell.

[0021] Furthermore, the drive mechanism includes a permanent magnet motor and a reducer, the reducer and the permanent magnet motor are linearly arranged on the rear side of the conveyor housing, the output end of the permanent magnet motor is connected to the input end of the reducer, a power connecting plate is fixed at the tail end of the power shaft, and the output end of the reducer is connected to the power connecting plate.

[0022] Furthermore, the turbine assembly includes an inner sleeve and an outer sleeve, with four impellers fixed between the inner sleeve and the outer sleeve. The outer sleeve is fixed to the inner wall of the cylinder, and the inner sleeve is fixed to the outer surface of the shaft connection.

[0023] Furthermore, a through-hole is provided on the rear side of the outer casing, and a front end shell is connected to the end of the conveying casing near the turbine casing via a flange. Rotary seals are provided between the front end shell and the through-hole, and between the tail end of the conveying casing and the power shaft.

[0024] Furthermore, the outer shell is composed of two half-shells. Each half-shell, the upper half-shell, and the lower half-shell has fastening edges on both sides. The fastening edges of the two half-shells are connected by fasteners. The upper half-shell and the lower half-shell are connected by fastening edges and fasteners.

[0025] Furthermore, the turbine connecting plate is provided with a number of preset holes, which are located between the rear flange and the cylinder. The mounting plate is fixed to the turbine connecting plate through the preset holes and fasteners.

[0026] The present invention has the following beneficial effects:

[0027] 1. This invention connects one end of the power shaft to the drive mechanism and the other end of the power shaft directly to the turbine connecting plate. The turbine connecting plate is then connected to the inner cylinder end cover of the mill. This allows the power of the drive mechanism to be directly transmitted from the power shaft to the inner cylinder of the mill, thereby achieving central transmission, reducing power loss and energy consumption. At the same time, connecting the screw conveyor mechanism for material feeding to the power shaft enables simultaneous feeding and driving, further reducing power consumption.

[0028] 2. This invention, through the design of a novel solid material feeding mechanism, places the feed inlet of the grinding material on the outer side of the lower half-shell tail end. The material will not impact the power shaft, thus preventing damage to the power shaft. At the same time, it can be directly connected to the tail end of the screw conveyor mechanism for linkage. The design of the rotatable vertical cylinder in the buffer bin enables continuous feeding of a constant material quantity, indirectly controlling the feeding speed and amount, ensuring the uniformity of material feeding, reducing the material transfer pressure on the screw conveyor mechanism, and avoiding the possibility of blockage. In addition, through the arrangement of the constricted tube, telescopic tube, and arc-shaped tube, the material will collide with the constricted tube, telescopic tube, and arc-shaped tube before feeding, thereby slowing down the initial feeding speed and reducing the impact on the conveyor shell and turbine conveyor mechanism. Overall, it ensures the stability and smoothness of the feeding of grinding materials.

[0029] 3. The present invention can be used for the installation of the buffer bin through the design of the fixed frame. At the same time, the weight of the materials in the buffer bin and the barrel is borne by the fixed frame. Furthermore, the connection between the arc-shaped tube and the constricted tube is made through the detachable telescopic tube, which will not transmit gravity and vibration to the conveying shell, thus ensuring the use and stability of the conveying shell.

[0030] 4. The present invention, through the design of the material lifting shell inside the turbine housing, can lift the material to the position of the turbine assembly for forced feeding, avoiding the problem that the material always accumulates at the bottom of the turbine housing due to gravity, and can actively transport the material to the turbine assembly to ensure feeding stability.

[0031] 5. This invention enables forced unloading through a turbine assembly and avoids material return, thus solving the problem of mutual conversion between axial and end-face material conveying.

[0032] 6. This invention designs the conveying housing and turbine housing as two detachable half-housings, facilitating online disassembly of the turbine housing and conveying housing, thereby enabling inspection and maintenance of the screw conveyor mechanism. At the same time, the inner liner is divided into four parts, allowing for quick disassembly and replacement of the four parts of the inner liner after the turbine housing is disassembled. It can also be quickly replaced online after excessive wear, ensuring the effectiveness of use.

[0033] 7. The arc-shaped tube designed in this invention is a 90-degree bend tube structure. After being installed in the lower half shell, the connection point with the lower half shell is close to being tangent to the lower half shell, which further reduces the initial feed velocity of the abrasive.

[0034] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a central drive conveying device for the feed end of a rod mill according to the present invention;

[0037] Figure 2 This is a front view of the structure of the present invention;

[0038] Figure 3 A schematic diagram of the solid material feeding mechanism and the lower shell;

[0039] Figure 4 A schematic diagram of the structure of the buffer bin after part of the bin wall has been removed;

[0040] Figure 5 This is a cross-sectional view of the cache repository structure;

[0041] Figure 6 A top-down view of the cache repository structure;

[0042] Figure 7 This is a structural diagram of the lower cover plate of the buffer compartment;

[0043] Figure 8 This is a schematic diagram of the turbine connecting disc.

[0044] Figure 9 A structural schematic diagram of the turbine connecting disc, turbine assembly, and turbine housing after partial removal from the cut-out section;

[0045] Figure 10 A structural schematic diagram of the turbine connecting disc, turbine assembly, and turbine housing after partial removal from the cut-out section;

[0046] Figure 11 This is a schematic diagram of the combined structure of the turbine connecting disc, turbine assembly, and three inner liner shells.

[0047] Figure 12 This is a side view of the structure of the present invention;

[0048] Figure 13 This is a schematic diagram of the spiral conveying mechanism and the conveying housing of the present invention;

[0049] The attached diagram lists the components represented by each number as follows:

[0050] 1-Turbine housing, 2-Turbine connecting plate, 3-Drive shaft, 4-Fixed material feeding mechanism, 5-Conveying housing, 6-Turbine assembly, 7-Drive mechanism, 8-Fixed frame, 9-Buffer bin, 10-Screw conveyor mechanism, 11-Rotary seal, 101-Outer protective shell, 102-Inner liner shell, 103-Outer flange, 104-Mounting plate, 105-Material lifting shell, 106-Inlet, 107-Front outlet, 201-Rear flange, 202-Cylinder body, 203-Mill inner cylinder connecting flange, 204-Rear outlet, 205-Shaft connection part, 206-Preset hole, 301-Drive connecting plate 501-Upper shell, 502-Lower shell, 503-Liquid inlet, 504-Fixed base, 505-Arc-shaped tube, 506-Front end shell, 601-Inner sleeve, 602-Outer sleeve, 603-Impeller, 701-Permanent magnet motor, 702-Reducer, 901-Constricted tube, 902-Telescopic tube, 903-Vertical cylinder, 904-Baffle plate, 905-Fan-shaped cavity, 906-Upper sealing plate, 907-Lower sealing plate, 908-Fan-shaped opening, 909-Infrared ranging sensor, 910-Reduced motor, 911-Gear, 912-Gear ring, 913-Slewing bearing, 914-Leaning port. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Please see Figure 1-10 As shown, the present invention is a central transmission conveying device for the feed end of a rod mill, comprising a power shaft 3, a screw conveying mechanism 10, a conveying housing 5, and a solid material feeding mechanism 4;

[0053] The drive shaft 3 is connected to a drive mechanism 7 at its tail end, and a turbine connecting plate 2 is connected to the other end of the drive shaft 3. A turbine assembly 6 is fixed to the front side of the turbine connecting plate 2, and a turbine housing 1 is fixed to the rear side of the turbine connecting plate 2.

[0054] A plurality of material lifting shells 105 are fixed inside the turbine housing 1. A plurality of rear discharge ports 204 are provided on the turbine connecting plate 2. The plurality of material lifting shells 105 are respectively connected to the turbine assembly 6 through the plurality of rear discharge ports 204.

[0055] The screw conveyor mechanism 10 is located behind the turbine housing 1 and fixed on the power shaft 3. The conveying housing 5 is sleeved on the outside of the screw conveyor mechanism 10, and the two ends of the conveying housing 5 are rotatably connected to the turbine housing 1 and the power shaft 3 respectively.

[0056] The conveying housing 5 is composed of an upper half-shell 501 and a lower half-shell 502. The upper half-shell 501 is provided with a liquid inlet 503 at the top, and the lower half-shell 502 is provided with a fixed seat 504 at the bottom. A 90-degree arc-shaped pipe 505 is fixedly connected to the outer side of the tail end of the lower half-shell 502.

[0057] The solid material feeding mechanism 4 includes a fixed frame 8 and a buffer bin 9;

[0058] The fixed frame 8 is set on the outside of the tail end of the conveyor housing 5, the buffer chamber 9 is fixed on the top of the fixed frame 8, the bottom end of the buffer chamber 9 is connected to the constriction tube 901, and the telescopic tube 902 is connected between the constriction tube 901 and the arc tube 505.

[0059] A top sealing plate 906 is fixed in the middle of the buffer compartment 9. The top sealing plate 906 is a semi-circular plate. A bottom sealing plate 907 is fixed in the bottom of the buffer compartment 9.

[0060] A vertical cylinder 903 is rotatably connected between the upper sealing plate 906 and the lower sealing plate 907. Several partitions 904 are fixed inside the vertical cylinder 903. A fan-shaped cavity 905 is formed between two adjacent partitions 904. A fan-shaped opening 908 that cooperates with the fan-shaped cavity 905 is opened on the lower sealing plate 907. An infrared ranging sensor 909 is embedded in the bottom surface of the upper sealing plate 906. The infrared ranging sensor 909 is located directly above the fan-shaped opening 908.

[0061] The outer side of the buffer compartment 9 is equipped with a rotary drive that is connected to the vertical cylinder 903.

[0062] Among them, such as Figure 1-7 As shown, the two ends of the vertical cylinder 903 are rotatably connected to the buffer compartment 9 via slewing bearings 913. A toothed ring 912 is fixed on the circumferential side of the vertical cylinder 903, and a clearance opening 914 is provided on the wall of the buffer compartment 9.

[0063] Among them, such as Figure 1-7 As shown, the rotary drive includes a geared motor 910, a gear 911 fixed at the output end of the geared motor 910, the geared motor 910 is fixed on the outside of the buffer compartment 9, and the gear 911 passes through the relief port 914 and meshes with the gear ring 912.

[0064] Among them, such as Figure 1-2 and Figure 8-12 As shown, a rear flange 201 is provided at the edge of the turbine connecting plate 2, and a mill inner cylinder connecting flange 203 is connected to the front side of the turbine connecting plate 2 via the cylinder 202. A shaft connecting part 205 is provided at the shaft center of the turbine connecting plate 2, and the end of the power shaft 3 is fixed in the shaft connecting part 205.

[0065] Among them, such as Figure 1-2 and Figure 9-12 As shown, the turbine housing 1 includes an outer shell 101 and an inner liner 102. The outer shell 101 has an outer flange 103 connected to the rear flange 201 on its front side. The inner liner 102 is movably disposed inside the outer shell 101. An mounting plate 104 is fixed to the front side of the inner liner 102. The mounting plate 104 is fixed to the turbine connecting plate 2 by fasteners. The inner liner 102 is composed of four sub-shells with the same structural features. The mounting plate 104 of the sub-shells is a fan-shaped plate. Several material lifting shells 105 are respectively fixed inside the mounting plates 104 of the sub-shells. The material lifting shells 105 have a feed inlet 106 on their outer side away from the axis of the inner liner 102. The mounting plate 104 of the sub-shells has a front discharge port 107 connected to the rear discharge port 204.

[0066] Among them, such as Figure 2 As shown, the drive mechanism 7 includes a permanent magnet motor 701 and a reducer 702. The reducer 702 and the permanent magnet motor 701 are linearly arranged on the rear side of the conveying housing 5. The output end of the permanent magnet motor 701 is connected to the input end of the reducer 702. A power connecting plate 301 is fixed at the tail end of the power shaft 3. The output end of the reducer 702 is connected to the power connecting plate 301.

[0067] Among them, such as Figure 9-10 and Figure 12 As shown, the turbine assembly 6 includes an inner sleeve 601 and an outer sleeve 602. Four impellers 603 are fixed between the inner sleeve 601 and the outer sleeve 602. The outer sleeve 602 is fixed to the inner wall of the cylinder 202, and the inner sleeve 601 is fixed to the outer surface of the shaft connection 205.

[0068] Among them, such as Figure 2 , Figure 9-11 and Figure 13 As shown, a through-hole is provided on the rear side of the outer casing 101. The front end shell 506 is connected to the end of the conveying casing 5 near the turbine casing 1 via a flange. Rotary seals 11 are provided between the front end shell 506 and the through-hole, and between the tail end of the conveying casing 5 and the power shaft 3.

[0069] Among them, such as Figure 1-2 and Figure 9-11 As shown, the outer shell 101 is composed of two half shells. The half shells, the upper half shell 501 and the lower half shell 502 are provided with fastening edges on both sides. The fastening edges of the two half shells are connected by fasteners. The upper half shell 501 and the lower half shell 502 are connected by fastening edges and fasteners.

[0070] Among them, such as Figure 1 and Figure 8-11 As shown, the turbine connecting plate 2 is provided with several preset holes 206. The preset holes 206 are located between the rear flange 201 and the cylinder 202. The mounting plate 104 is fixed to the turbine connecting plate 2 through the preset holes 206 and fasteners.

[0071] The working principle of this invention is as follows:

[0072] Transmission principle: The drive mechanism 7 starts and drives the power shaft 3 to rotate. The power shaft 3 drives the screw conveyor mechanism 10 to rotate. The power shaft 3 and the conveyor housing 5 are in a state of relative rotation. Both ends are sealed by the rotary seal 11. The power shaft 3 drives the turbine connecting plate 2 to rotate. The turbine connecting plate 2 is connected to the mill inner cylinder, thereby driving the mill inner cylinder to rotate. Similarly, the turbine connecting plate 2 drives the turbine assembly 6 and the turbine housing 1 to rotate.

[0073] The principle of the material conveying section:

[0074] Liquid material conveying: Additives or water can be input into the conveying housing 5 through the liquid material inlet 503. With the height difference between the conveying housing 5 and the turbine housing 1, the liquid flows into the turbine housing 1 by gravity. Through the cooperation of the material lifting shell 105 and the turbine assembly 6, the liquid can be discharged into the inner cylinder of the rod mill.

[0075] Solid material conveying: Solid materials such as coal blocks are pre-conveyed into the buffer bin 9 and are in a state of waiting to be fed. The material above the buffer bin 9 is transferred to the three fan-shaped cavities 905 with the top opening by the guide of the upper sealing plate 906. The material in the fan-shaped cavities 905 with the bottom of the upper sealing plate 906 opposite to the fan-shaped opening 908 is in a state of discharge. The material is guided by gravity through the constriction pipe 901, the telescopic pipe 902 and the arc pipe 505 to the bottom of the lower shell 502. Then, it is conveyed without interruption to the turbine housing 1 by the working screw conveyor 10 in the working state. Subsequently, it is forcibly output to the inner cylinder of the rod mill by the lifting of the material lifting shell 105 and the cooperation of the turbine assembly 6.

[0076] The infrared ranging sensor 909 can detect whether the material in the sector cavity 905 has finished discharging. After the material discharge is detected, the speed reduction motor 910 is immediately controlled to run. Through the cooperation of gear 911 and gear ring 912, the vertical cylinder 903 can be rotated at a certain angle, thereby switching to another sector cavity 905 for continuous material discharge without any interval.

[0077] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A central drive conveyor for a feed end of a rod mill, characterized by: Including power shaft (3), screw conveying mechanism (10), conveying shell (5) and solid material feeding mechanism (4); The tail end of the power shaft (3) is connected with a driving mechanism (7), and the other end of the power shaft (3) is connected with a turbine connecting disc (2), the front side of the turbine connecting disc (2) is fixed with a turbine assembly (6), and the rear side of the turbine connecting disc (2) is fixed with a turbine shell (1); A plurality of material lifting shells (105) are fixed in the turbine shell (1), a plurality of rear discharge ports (204) are arranged on the turbine connecting disc (2), and the plurality of material lifting shells (105) are respectively communicated with the turbine assembly (6) through the plurality of rear discharge ports (204). The screw conveying mechanism (10) is located at the rear side of the turbine shell (1) and is fixed on the power shaft (3), the conveying shell (5) is sleeved outside the screw conveying mechanism (10), and the two ends of the conveying shell (5) are respectively rotatably connected with the turbine shell (1) and the power shaft (3). The conveying shell (5) is composed of an upper half shell (501) and a lower half shell (502), the top of the upper half shell (501) is provided with a liquid material inlet (503), the bottom of the lower half shell (502) is provided with a fixing seat (504), and the tail end of the lower half shell (502) is fixed outside and communicated with a 90-degree arc-shaped pipe (505). The solid material feeding mechanism (4) comprises a fixing frame (8) and a buffer bin (9). The fixing frame (8) is arranged outside the tail end of the conveying shell (5), the buffer bin (9) is fixed on the top of the fixing frame (8), the bottom end of the buffer bin (9) is connected with a necked pipe (901), the necked pipe (901) and the arc-shaped pipe (505) are connected with a telescopic pipe (902), and the buffer bin (9) is fixed on the top of the fixing frame (8). A upper sealing plate (906) is fixed in the middle of the buffer bin (9), the upper sealing plate (906) is a semicircular plate, and a lower sealing plate (907) is fixed at the bottom end in the buffer bin (9). A vertical cylinder (903) is rotatably connected between the upper sealing plate (906) and the lower sealing plate (907), a plurality of partition plates (904) are fixed in the vertical cylinder (903), a sector-shaped cavity (905) is formed between adjacent two partition plates (904), a sector-shaped opening (908) matched with the sector-shaped cavity (905) is formed in the lower sealing plate (907), an infrared distance measuring sensor (909) is embedded and installed on the bottom surface of the upper sealing plate (906), and the infrared distance measuring sensor (909) is located directly above the sector-shaped opening (908). A rotary drive is arranged outside the buffer bin (9) and is in transmission connection with the vertical cylinder (903).

2. A central drive conveyor for the feed end of a rod mill as defined in claim 1, characterized in that Both ends of the vertical cylinder (903) are rotatably connected with the buffer bin (9) through rotary supports (913), a gear ring (912) is fixed on the lateral surface of the vertical cylinder (903), and a gap (914) is formed in the wall of the buffer bin (9).

3. A central drive conveyor for the feed end of a rod mill as defined in claim 2, wherein, The rotary drive comprises a speed reducer motor (910), a gear (911) is fixed to the output end of the speed reducer motor (910), the speed reducer motor (910) is fixed outside the buffer bin (9), and the gear (911) is engaged with the gear ring (912) after penetrating through the gap (914).

4. A central drive conveyor for the feed end of a rod mill as defined in claim 1, wherein, The turbine connecting disc (2) is provided with a rear flange (201) at the edge, and the front side of the turbine connecting disc (2) is connected with a mill inner cylinder connecting flange (203) through a cylinder (202), and the shaft connecting part (205) is arranged at the shaft center of the turbine connecting disc (2), and the power shaft (3) is fixed at the end of the shaft connecting part (205).

5. A central drive conveyor for the feed end of a rod mill as defined in claim 4, wherein, The turbine shell (1) comprises an outer shell (101) and an inner shell (102), the outer shell (101) is provided with an outer flange (103) connected with the rear flange (201) at the front side, the inner shell (102) is movably arranged in the outer shell (101), the inner shell (102) is fixed with a mounting plate (104) at the front side, the mounting plate (104) is fixed with the turbine connecting disc (2) through fasteners, the inner shell (102) is composed of four sub-shells with consistent structure, the mounting plate (104) of the sub-shell is a fan-shaped plate, a plurality of material lifting shells (105) are fixed on the inner side of the mounting plate (104) of the sub-shell, the material lifting shell (105) is provided with a feeding port (106) at the position away from the shaft center of the inner shell (102) on the outer side, and the mounting plate (104) of the sub-shell is provided with a front discharge port (107) connected with the rear discharge port (204).

6. A central drive conveyor for the feed end of a rod mill as defined in claim 1, wherein, The driving mechanism (7) comprises a permanent magnet motor (701) and a speed reducer (702), the speed reducer (702) and the permanent magnet motor (701) are linearly arranged at the rear side of the conveying shell (5), the output end of the permanent magnet motor (701) is connected with the input end of the speed reducer (702), and the tail end of the power shaft (3) is fixed with a power connecting disc (301), and the output end of the speed reducer (702) is connected with the power connecting disc (301).

7. A central drive conveyor for the feed end of a rod mill as defined in claim 4 wherein, The turbine assembly (6) comprises an inner sleeve (601) and an outer sleeve (602), four impellers (603) are fixed between the inner sleeve (601) and the outer sleeve (602), the outer sleeve (602) is fixed on the inner wall of the cylinder (202), and the inner sleeve (601) is fixed on the outer surface of the shaft connecting part (205).

8. A central drive conveyor for the feed end of a rod mill as defined in claim 5 wherein, The outer shell (101) is provided with a through hole at the rear side, one end of the conveying shell (5) close to the turbine shell (1) is connected with a front end shell (506) through a flange, and rotary seals (11) are arranged between the front end shell (506) and the through hole, and between the tail end of the conveying shell (5) and the power shaft (3).

9. A central drive conveyor for the feed end of a rod mill as defined in claim 5 wherein, The outer shell (101) is composed of two half shells, the half shells, the upper half shell (501) and the lower half shell (502) are provided with fastening edges on both sides, the fastening edges of the two half shells are connected through fasteners, and the upper half shell (501) and the lower half shell (502) are connected through the fastening edges and the fasteners.

10. A central drive conveyor for the feed end of a rod mill as defined in claim 5 wherein, The turbine connecting disc (2) is provided with a plurality of preset holes (206), the preset holes (206) are located between the rear flange (201) and the cylinder (202), and the mounting plate (104) is fixed with the turbine connecting disc (2) through the preset holes (206) and the fasteners.

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