A multi-stage cement clinker grinding device

Abstract

The utility model discloses a kind of cement clinker blending devices of multistage grinding, including metering platform, the metering platform inside is provided with belt scale and rotor scale, the left side of belt scale is provided rotor scale, the upper end of metering platform is close to left rear and is fixedly set with first inlet pipe, the lower end of metering platform is close to left front and is fixedly set with first discharge pipe, the upper end of metering platform is close to right front and is fixedly set with second inlet pipe, the lower end of metering platform is close to right rear and is fixedly set with second discharge pipe, the lower end center of metering platform is fixedly connected with rotating shaft, cement clinker and other difficult grinding materials pass a kind of bin, under the action of corresponding second feed pipe structure, output through first inlet pipe and fall on belt scale quantitative weighing, fall into first mixing tank and mix through first discharge pipe, fly ash and other easy grinding materials pass two kinds of bins, under the action of corresponding first feed pipe structure, output through second inlet pipe and fall into rotor scale and carry out quantitative weighing.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, specifically to a multi-stage grinding cement clinker blending device. Background Technology

[0002] The common grinding configuration in current cement production processes involves multi-stage grinding of cement clinker using a combination of roller press and ball mill, namely primary grinding and final grinding stages. The cement clinker blending device in the multi-stage grinding system is one of the core control links of the entire grinding process. Its goal is to stably and efficiently mix cement clinker, gypsum powder, and various admixtures (such as slag and fly ash) in a set ratio at different grinding stages of multi-stage grinding. Among these, because granular or lumpy materials such as cement clinker and slag are relatively difficult to grind, they usually need to be processed by multi-stage grinding through roller press and ball mill. However, fly ash and gypsum powder are easy to grind. If they are mixed together with cement clinker and fed into the primary grinding and then processed by the final grinding, over-grinding can easily affect the final result. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the above and / or existing multi-stage grinding cement clinker blending devices, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a multi-stage grinding cement clinker blending device. Difficult-to-grind materials such as cement clinker are fed through a first-class silo and, under the action of a corresponding second conveying pipe structure, are output through a first inlet pipe and fall onto a belt scale for quantitative weighing. They then fall into a first mixing tank through a first outlet pipe for mixing. Easily-grindable materials such as fly ash are fed through a second-class silo and, under the action of a corresponding first conveying pipe structure, are output through a second inlet pipe and fall into a rotor scale for quantitative weighing. They then fall into a second mixing tank through a second outlet pipe for mixing. This separates and feeds difficult-to-grind and easily-grindable materials for grinding.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A multi-stage grinding cement clinker mixing device includes a metering platform. A belt scale and a rotor scale are installed inside the metering platform. The belt scale is located to the left of the rotor scale. A first feed pipe is fixedly installed at the upper end of the metering platform near the left rear. A first discharge pipe is fixedly installed at the lower end of the metering platform near the left front. A second feed pipe is fixedly installed at the upper end of the metering platform near the right front. A second discharge pipe is fixedly installed at the lower end of the metering platform near the right rear. A rotating shaft is fixedly connected to the center of the lower end of the metering platform. A sprocket is fixedly installed through the outer ring of the rotating shaft near the bottom. The rotating shaft is connected to the output shaft of a reduction gearbox via the sprocket, chain, and the input shaft of the reduction gearbox. The input shaft of the reduction gearbox is connected to the output shaft of a first drive mechanism. A first connecting pipe is fixedly connected below the first discharge pipe. A second connecting pipe is fixedly connected below the second discharge pipe. Both the second and first connecting pipes are fixedly connected to an annular cover. The annular cover is slidably connected to a first mixing tank and a second mixing tank via an arc-shaped groove. The arc-shaped groove is respectively opened at the upper end of the first and second mixing tanks.

[0007] As a preferred embodiment of the multi-stage grinding cement clinker blending device of this utility model, a first type of silo is provided on the left rear side of the metering platform, a second type of silo is provided on the right front side of the metering platform, a first conveying pipe structure is fixedly connected below the second type of silo, a pneumatic butterfly valve is installed on the first conveying pipe structure, and the end of the first conveying pipe structure is located above the second inlet pipe.

[0008] As a preferred embodiment of the multi-stage grinding cement clinker blending device of this utility model, a second conveying pipe structure is fixedly connected to the lower part of the first type of silo, a pneumatic knife gate valve is installed on the second conveying pipe structure, and the end of the second conveying pipe structure is located above the first inlet pipe.

[0009] As a preferred embodiment of the multi-stage grinding cement clinker mixing device of this utility model, the first mixing tank includes a first drive shaft that is rotatably connected through the right side of the first mixing tank. A first worm gear is fixedly connected to the left end of the first drive shaft. The left side of the first worm gear is disposed through a first support guide frame. The first support guide frame is fixedly disposed on the inner wall of the first mixing tank.

[0010] In a preferred embodiment of the multi-stage grinding cement clinker mixing device of this utility model, the first worm gear is meshed with a first turbine, the first turbine is fixedly and penetrates the outer ring of the first stirring shaft, the first stirring shaft is rotatably connected to the bottom of the first support guide frame, and the outer ring of the first stirring shaft is fixedly provided with a first spiral blade and a first stirring blade.

[0011] In a preferred embodiment of the multi-stage grinding cement clinker mixing device of this utility model, a second drive shaft is rotatably connected to the front side of the second mixing tank, a second worm is fixedly connected to the rear end of the second drive shaft, the rear end of the second worm is disposed through a second support guide frame, and the second support guide frame is fixedly disposed on the inner wall of the second mixing tank.

[0012] In a preferred embodiment of the multi-stage grinding cement clinker mixing device of this utility model, the second worm gear is meshed with a second turbine, the second turbine is fixedly and through the outer ring of the second stirring shaft, the second stirring shaft is rotatably connected to the bottom of the second support guide frame, and the outer ring of the second stirring shaft is fixedly provided with a second spiral blade and a second stirring blade.

[0013] In a preferred embodiment of the multi-stage grinding cement clinker mixing device of this utility model, the right end of the first drive shaft passes through the drive frame and is connected to the rotating shaft via a bevel gear set. The drive frame is fixedly connected to the right side of the first mixing tank and the front side of the second mixing tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Difficult-to-grind materials such as cement clinker are fed through a first-class silo, and under the action of the corresponding second conveying pipe structure, they are output through the first inlet pipe and fall onto the belt scale for quantitative weighing. They then fall into the first mixing tank through the first outlet pipe for mixing. Easily grindable materials such as fly ash are fed through a second-class silo, and under the action of the corresponding first conveying pipe structure, they are output through the second inlet pipe and fall into the rotor scale for quantitative weighing. They then fall into the second mixing tank through the second outlet pipe for mixing. This separates the difficult-to-grind and easily grindable materials for mixing and separate feeding and grinding. Under the action of the first drive mechanism, the metering platform is driven to rotate through the reduction gearbox, chain, and rotating shaft for quantitative weighing of materials discharged from the first and second-class silos in other directions. The first outlet pipe, through the first connecting pipe, and the second outlet pipe, through the second connecting pipe, drive the annular cover to slide and adjust within the arc-shaped groove. The positions of the first and second connecting pipes change during rotation, but the incoming material can still fall into the corresponding mixing tank through the arc-shaped groove. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the structure of a first-class hopper, a second conveying pipe, and a pneumatic knife gate valve of this utility model; Figure 3 This is a schematic diagram of the structure of the first connecting pipe, the second connecting pipe, the annular cover, the first mixing tank, and the second mixing tank of this utility model; Figure 4 This is a schematic diagram of the arc-shaped trough, the first mixing tank, and the second mixing tank of this utility model; Figure 5 This is a schematic cross-sectional view of the first mixing tank of this utility model; Figure 6 This is a schematic cross-sectional view of the second mixing tank of this utility model.

[0016] In the diagram: 1. Metering platform; 2. First feed pipe; 3. First discharge pipe; 4. Second feed pipe; 5. Second discharge pipe; 6. Rotating shaft; 7. Type I silo; 8. Type II silo; 9. First conveying pipe structure; 10. Pneumatic butterfly valve; 11. Second conveying pipe structure; 12. Pneumatic knife gate valve; 13. First connecting pipe; 14. Second connecting pipe; 15. Annular cover; 16. Arc-shaped groove; 17. First mixing tank; 1701. First drive shaft; 1702. First worm gear. 1703. Rod; 1704. First support guide frame; 1705. First turbine; 1706. First stirring shaft; 1707. First stirring blade; 18. Second mixing tank; 1801. Second worm gear; 1802. Second support guide frame; 1803. Second turbine; 1804. Second stirring shaft; 1805. Second helical blade; 1806. Second stirring blade; 19. Transmission frame; 20. Bevel gear set; 21. Rotary shaft. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] This utility model provides a multi-stage grinding cement clinker mixing device. Difficult-to-grind materials such as cement clinker are fed through a first-class silo and, under the action of a corresponding second conveying pipe structure, are output through a first inlet pipe and fall onto a belt scale for quantitative weighing. They then fall into a first mixing tank through a first outlet pipe for mixing. Easily-grindable materials such as fly ash are fed through a second-class silo and, under the action of a corresponding first conveying pipe structure, are output through a second inlet pipe and fall into a rotor scale for quantitative weighing. They then fall into a second mixing tank through a second outlet pipe for mixing. This separates and feeds difficult-to-grind and easily-grindable materials for grinding.

[0021] Figures 1-6 The diagram shown is an overall structural schematic of one embodiment of a multi-stage grinding cement clinker blending device according to this utility model. Please refer to [link / reference]. Figures 1-6 This embodiment of a multi-stage grinding cement clinker blending device includes a metering platform 1. A belt scale and a rotor scale are installed inside the metering platform 1. The belt scale is located to the left of the rotor scale. A first feed pipe 2 is fixedly installed at the upper end of the metering platform 1 near the left rear. A first discharge pipe 3 is fixedly installed at the lower end of the metering platform 1 near the left front. A second feed pipe 4 is fixedly installed at the upper end of the metering platform 1 near the right front. A second discharge pipe 5 is fixedly installed at the lower end of the metering platform 1 near the right rear. A rotating shaft 6 is fixedly connected to the center of the lower end of the metering platform 1. The outer ring of the rotating shaft 6 is fixed near the lower part of the metering platform 1. A sprocket is installed through the shaft. The rotating shaft 6 is connected to the output shaft of the reduction gearbox via the sprocket, chain, and reduction gearbox. The input shaft of the reduction gearbox is connected to the output shaft of the first drive mechanism. A first connecting pipe 13 is fixedly connected below the first discharge pipe 3, and a second connecting pipe 14 is fixedly connected below the second discharge pipe 5. Both the second connecting pipe 14 and the first connecting pipe 13 are fixedly connected to an annular cover 15 below. The annular cover 15 is slidably connected to the first mixing tank 17 and the second mixing tank 18 via an arc groove 16. The arc groove 16 is respectively opened at the upper end of the first mixing tank 17 and the second mixing tank 18.

[0022] Under the action of the first drive mechanism, the metering platform 1 is driven to rotate via the reduction gearbox, chain, and rotating shaft 6. This is used for quantitative weighing of materials discharged from Class I silos 7 and Class II silos 8 in other directions. The first discharge pipe 3, through the first connecting pipe 13 and the second discharge pipe 5, through the second connecting pipe 14, drives the annular cover 15 to slide and adjust within the arc-shaped groove 16. The positions of the first connecting pipe 13 and the second connecting pipe 14 change during rotation, but the incoming material can still fall into the corresponding mixing tank through the arc-shaped groove 16. The first drive mechanism, reduction gearbox, and chain are not shown in this patent. An external support is fixedly installed between the first mixing tank 17 and the second mixing tank 18. The rotating shaft 6 and the external support are rotatably connected. The belt scale and rotor scale installed inside the metering platform 1 are existing technologies. Difficult-to-grind materials fall into the belt scale inside the metering platform 1 through the first inlet pipe 2. The material is placed in a specific spatial position, falls onto the belt scale, and is dynamically weighed by the belt scale. After weighing, the material is conveyed and falls through the first discharge pipe 3 into the first connecting pipe 13. Furthermore, to ensure that the material falls accurately onto the belt scale, the lower end of the first inlet pipe 2 extends into the internal space of the metering platform 1, at an appropriate distance from the belt scale, so that the material falls accurately onto the belt scale for dynamic conveying and weighing, avoiding scattering around when falling. Abrasive materials fall into the rotor scale through the second inlet pipe 4, are weighed by the rotor scale, and are discharged through the second discharge pipe 5 into the second connecting pipe 14. Furthermore, the lower end of the second inlet pipe 4 extends into the internal space of the metering platform 1, close to the inlet of the rotor scale. The inner diameter area of ​​the inlet is larger than that of the inner diameter area of ​​the second inlet pipe 4. The outlet of the rotor scale is close to the second outlet pipe 5, and the inner diameter area of ​​the outlet is smaller than that of the inner diameter area of ​​the second outlet pipe 5.

[0023] A first-class hopper 7 is provided on the left rear side of the metering platform 1, and a second-class hopper 8 is provided on the right front side of the metering platform 1. A first conveying pipe structure 9 is fixedly connected below the second-class hopper 8. A pneumatic butterfly valve 10 is installed on the first conveying pipe structure 9. The end of the first conveying pipe structure 9 is located above the second inlet pipe 4. A second conveying pipe structure 11 is fixedly connected below the first-class hopper 7. A pneumatic knife gate valve 12 is installed on the second conveying pipe structure 11. The end of the second conveying pipe structure 11 is located above the first inlet pipe 2.

[0024] The first type of silo 7 stores difficult-to-grind materials, and the second type of silo 8 stores easily-grind materials. The first type of silo 7 conveys materials to the first feed pipe 2 through the second conveying pipe structure 11, mainly by vibratory feeding, which is an existing technology structure. The second type of silo 8 conveys materials to the second feed pipe 4 through the first conveying pipe structure 9, mainly by pneumatic conveying or shaftless auger conveying, which is also an existing technology structure. During material feeding, two-stage speed control is used. In the coarse adjustment stage, the material is fed at full speed. When the material feeding value is close to 90%-95%, the fine adjustment stage is entered, and the material is fed at low speed to reduce overshoot. When the material feeding value is reached, the second conveying pipe structure 11 cuts off the material feeding by closing the pneumatic knife gate valve 12, and the first conveying pipe structure 9 cuts off the material feeding by closing the pneumatic butterfly valve 10. In order to improve the control accuracy, the existing technology also uses intelligent pre-closing point calculation. The pre-closing point is calculated by a dynamic prediction algorithm. This part is a relevant method for controlling material feeding in the existing technology and is not a novel part of this patent application, so it will not be described in detail here.

[0025] The first mixing tank 17 includes a first drive shaft 1701 that is rotatably connected through the right side of the first mixing tank 17. A first worm gear 1702 is fixedly connected to the left end of the first drive shaft 1701. The left side of the first worm gear 1702 is disposed through the first support guide frame 1703. The first support guide frame 1703 is fixedly disposed on the inner wall of the first mixing tank 17. The first worm gear 1702 is meshed with a first turbine 1704. The first turbine 1704 is fixedly disposed through the outer ring of the first stirring shaft 1705. The first stirring shaft 1705 is rotatably connected through the bottom of the first support guide frame 1703. A first spiral blade 1706 and a first stirring blade 1707 are fixedly disposed on the outer ring of the first stirring shaft 1705.

[0026] Under external driving force, the first drive shaft 1701 drives the first turbine 1704 to rotate via the first worm gear 1702, thereby driving the first spiral blade 1706 and the first stirring blade 1707 on the first stirring shaft 1705 to rotate and mix the difficult-to-grind material. The first spiral blade 1706 is located below the first support guide frame 1703. The connection between the first stirring blade 1707 and the first stirring shaft 1705 is located between the upper and lower blades of the first spiral blade 1706. The upper end surface of the first support guide frame 1703 is inclined on both sides to prevent material from accumulating on top. A belt conveyor, chain bucket / plate chain elevator or screw conveyor is set below the discharge pipe at the lower end of the first mixing tank 17 as needed to transport the mixed difficult-to-grind material to the roller press for preliminary grinding.

[0027] A second drive shaft is rotatably connected to the front side of the second mixing tank 18. A second worm gear 1801 is fixedly connected to the rear end of the second drive shaft. The rear end of the second worm gear 1801 is inserted into the second support guide frame 1802. The second support guide frame 1802 is fixedly installed on the inner wall of the second mixing tank 18. The second worm gear 1801 is meshed with a second turbine 1803. The second turbine 1803 is fixedly inserted into the outer ring of the second stirring shaft 1804. The second stirring shaft 1804 is rotatably connected to the bottom of the second support guide frame 1802. A second spiral blade 1805 and a second stirring blade 1806 are fixedly installed on the outer ring of the second stirring shaft 1804.

[0028] Under external driving force, the second drive shaft drives the second turbine 1803 to rotate via the second worm gear 1801, thereby driving the second spiral blade 1805 and the second stirring blade 1806 on the second stirring shaft 1804 to rotate. The easily ground materials are mixed and stirred by the second spiral blade 1805 and the second stirring blade 1806. The second spiral blade 1805 is located below the second support guide frame 1802. The connection between the second stirring blade 1806 and the second stirring shaft 1804 is located between the upper and lower blades of the second stirring blade 1806. The upper end face of the second support guide frame 1802 is also provided with two inclined surfaces. A belt conveyor, chain bucket / plate chain elevator or screw conveyor is set below the discharge pipe at the lower end of the second mixing tank 18 as needed to transport the easily ground materials to the ball mill for final grinding.

[0029] The right end of the first drive shaft 1701 passes through the drive frame 19 and is connected to the rotating shaft 21 via the bevel gear set 20. The drive frame 19 is fixedly connected to the right side of the first mixing tank 17 and the front side of the second mixing tank 18.

[0030] The bevel gear set 20 consists of three meshing bevel gears. The lower bevel gear is connected to the output shaft of the second drive mechanism via the rotating shaft 21. The other two bevel gears are connected to the first drive shaft 1701 and the second drive shaft, respectively. The first drive shaft 1701 and the second drive shaft are driven to rotate through the second drive mechanism, the rotating shaft 21 and the bevel gear set 20. The second drive mechanism is not shown in this patent.

[0031] Combination Figures 1-6This embodiment of a multi-stage grinding cement clinker blending device operates as follows: A primary silo 7 stores difficult-to-grind materials, and a secondary silo 8 stores easily-grind materials. The primary silo 7 conveys materials to the first feed pipe 2 via a second conveying pipe structure 11, and the secondary silo 8 conveys materials to the second feed pipe 4 via a first conveying pipe structure 9. Under the action of a first driving mechanism, a metering table 1 rotates via a reduction gearbox, chain, and rotating shaft 6, used for quantitative weighing of materials discharged from the primary silos 7 and secondary silos 8 in other directions. The first discharge pipe 3, through a first connecting pipe 13, and the second discharge pipe 5, through a second connecting pipe 14, drive the annular cover 15 to slide and adjust within the arc-shaped groove 16. The positions of the first connecting pipe 13 and the second connecting pipe 14 change during rotation, but the incoming materials can still pass through. The material falls into the corresponding mixing tank through the arc-shaped groove 16. Under external driving action, the first drive shaft 1701 drives the first turbine 1704 to rotate through the first worm 1702, thereby driving the first spiral blade 1706 and the first stirring blade 1707 on the first stirring shaft 1705 to rotate and mix the difficult-to-grind material. Under external driving action, the second drive shaft drives the second turbine 1803 to rotate through the second worm 1801, thereby driving the second spiral blade 1805 and the second stirring blade 1806 on the second stirring shaft 1804 to rotate and mix the easy-to-grind material through the second spiral blade 1805 and the second stirring blade 1806. The device is equipped with a controller, and the controller model is Siemens S7-1500CPU1518F-4PN / DP.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-stage grinding cement clinker blending device, comprising a metering table (1), characterized in that: The metering platform (1) is equipped with a belt scale and a rotor scale. The belt scale is located to the left of the rotor scale. A first feed pipe (2) is fixedly installed at the upper end of the metering platform (1) near the left rear. A first discharge pipe (3) is fixedly installed at the lower end of the metering platform (1) near the left front. A second feed pipe (4) is fixedly installed at the upper end of the metering platform (1) near the right front. A second discharge pipe (5) is fixedly installed at the lower end of the metering platform (1) near the right rear. A rotating shaft (6) is fixedly connected to the center of the lower end of the metering platform (1). A sprocket is fixedly installed through the outer ring of the rotating shaft (6) near the bottom. The rotating shaft (6) passes through... The output shaft of the gearbox is connected to the sprocket, chain and reduction gearbox. The input shaft of the reduction gearbox is connected to the output shaft of the first drive mechanism. A first connecting pipe (13) is fixedly connected below the first discharge pipe (3). A second connecting pipe (14) is fixedly connected below the second discharge pipe (5). The second connecting pipe (14) and the first connecting pipe (13) are both fixedly connected to an annular cover (15). The annular cover (15) is slidably connected to the first mixing tank (17) and the second mixing tank (18) through an arc groove (16). The arc groove (16) is respectively opened at the upper end of the first mixing tank (17) and the second mixing tank (18).

2. The cement clinker blending device according to claim 1, characterized in that: A first type of silo (7) is provided on the left rear side of the metering platform (1), and a second type of silo (8) is provided on the right front side of the metering platform (1). A first conveying pipe structure (9) is fixedly connected below the second type of silo (8). A pneumatic butterfly valve (10) is installed on the first conveying pipe structure (9). The end of the first conveying pipe structure (9) is located above the second inlet pipe (4).

3. The cement clinker blending device for multi-stage grinding according to claim 2, characterized in that: A second conveying pipe structure (11) is fixedly connected to the lower part of the first type of silo (7). A pneumatic knife gate valve (12) is installed on the second conveying pipe structure (11). The end of the second conveying pipe structure (11) is located above the first inlet pipe (2).

4. The cement clinker blending device for multi-stage grinding according to claim 1, characterized in that: The first mixing tank (17) includes a first drive shaft (1701) that is rotatably connected through the right side of the first mixing tank (17). A first worm gear (1702) is fixedly connected to the left end of the first drive shaft (1701). The left side of the first worm gear (1702) is disposed inside a first support guide frame (1703). The first support guide frame (1703) is fixedly disposed on the inner wall of the first mixing tank (17).

5. A cement clinker blending device for multi-stage grinding according to claim 4, characterized in that: The first worm (1702) is meshed with a first turbine (1704), the first turbine (1704) is fixedly disposed on the outer ring of the first stirring shaft (1705), the first stirring shaft (1705) is rotatably connected to the bottom of the first support guide frame (1703), and the outer ring of the first stirring shaft (1705) is fixedly disposed with a first spiral blade (1706) and a first stirring blade (1707).

6. The cement clinker blending device according to claim 1, characterized in that: The front side of the second mixing tank (18) is rotatably connected to a second drive shaft, and the rear end of the second drive shaft is fixedly connected to a second worm gear (1801). The rear end of the second worm gear (1801) is disposed inside a second support guide frame (1802), and the second support guide frame (1802) is fixedly disposed on the inner wall of the second mixing tank (18).

7. A cement clinker blending device for multi-stage grinding according to claim 6, characterized in that: The second worm (1801) is meshed with a second turbine (1803), the second turbine (1803) is fixedly installed on the outer ring of the second stirring shaft (1804), the second stirring shaft (1804) is rotatably connected to the bottom of the second support guide frame (1802), and the outer ring of the second stirring shaft (1804) is fixedly provided with a second spiral blade (1805) and a second stirring blade (1806).

8. A multi-stage grinding cement clinker blending device according to claim 4, characterized in that: The right end of the first drive shaft (1701) passes through the drive frame (19) and is connected to the rotating shaft (21) via the bevel gear set (20). The drive frame (19) is fixedly connected to the right side of the first mixing tank (17) and the front side of the second mixing tank (18).

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