A dry process cement production line

Abstract

This application relates to the field of cement production technology and discloses a dry-process cement production line, including a jaw crusher and a powder grinding mill fixedly placed on the floor of a cement production workshop, and a feeding mechanism hoisted and fixed inside the cement production workshop. A discharge pipe is fixedly installed on the right side of the jaw crusher, and a feed hopper is fixedly installed on the top of the powder grinding mill. The feeding mechanism includes a crossbeam, an electric guide rail, an electric slide, a mounting plate, a winch, a wire rope, a conveying cylinder, a discharge pipe, and cement raw material conveying components. This application has the following advantages and effects: it can control the automated translation and lifting of the conveying cylinder between the jaw crusher and the powder grinding mill, so as to transfer the crushed cement raw materials from the jaw crusher evenly to the powder grinding mill, eliminating the need for manual transfer of the crushed cement raw materials, reducing manual intervention, lowering labor costs, effectively reducing material leakage, and improving work efficiency.

Description

Technical Field

[0001] This application relates to the field of cement production technology, and in particular to a dry process cement production line. Background Technology

[0002] A dry process cement production line mainly consists of processes such as raw material crushing, grinding and pulverizing and pre-homogenization, raw meal preparation and homogenization, preheating and decomposition, cement clinker calcination, and cement grinding and packaging. In the dry process cement production, raw material crushing and grinding are key pre-processing steps that directly affect the subsequent clinker calcination and the quality of the finished cement product.

[0003] In traditional dry-process cement production lines, after jaw crushers crush raw materials such as limestone, the crushed materials are usually transferred to grinding mills for further processing via manual handling or conveyor belt transport. However, these traditional transfer methods have many limitations: manual handling is not only labor-intensive and inefficient, but also prone to material spillage during the transfer process, leading to waste and a dirty workshop environment. Although ordinary conveyor belt conveying achieves a certain degree of automation, material leakage is prone to occur at the junction of the conveyor belt and the jaw crusher or grinding mill, which can easily generate dust and material spillage. In addition, conveyor belts occupy a large amount of floor space, which is not conducive to the compact layout of workshop equipment.

[0004] Therefore, we propose a dry process cement production line to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a dry process cement production line that facilitates the transfer and even feeding of cement raw materials crushed by a jaw crusher into a powder grinding mill, eliminating the need for manual handling of the crushed cement raw materials, reducing manual intervention, lowering labor costs, effectively reducing material leakage, and improving work efficiency.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a dry process cement production line, comprising a jaw crusher and a powder grinding mill fixedly placed on the ground of a cement production workshop, and a feeding mechanism hoisted and fixed inside the cement production workshop. A discharge pipe is fixedly installed on the right side of the jaw crusher, and a feed hopper is fixedly installed on the top of the powder grinding mill. The feeding mechanism includes a crossbeam, an electric guide rail, an electric slide block, a mounting plate, a winch, a wire rope, a conveying cylinder, a discharge pipe, and a cement raw material conveying assembly. The electric guide rail is fixedly installed... At the bottom of the crossbeam, an electric slide block is slidably mounted on an electric guide rail. A mounting plate is fixedly mounted on the bottom of the electric slide block. A winch is fixedly mounted on the bottom of the mounting plate. A wire rope is wound around the winch. A conveying cylinder is hoisted and fixed at the bottom end of the wire rope and located between the jaw crusher and the powder grinding mill. A feed inlet is opened on the top left side of the conveying cylinder. A discharge pipe is fixedly connected to the center of the bottom of the conveying cylinder. A cement raw material conveying assembly is set at the bottom of the conveying cylinder. The cement raw material conveying assembly is used to convey the crushed cement raw material into the powder grinding mill.

[0007] A further provision of this application is that a U-shaped frame is fixedly installed on the top of the conveying cylinder, and the bottom end of the wire rope is fixedly connected to the top of the U-shaped frame.

[0008] A further configuration of this application is as follows: the cement raw material conveying assembly includes a conveying pipe, a baffle plate, and an electric telescopic rod. The conveying pipe is slidably sleeved on the discharge pipe, the baffle plate is fixedly sleeved on the conveying pipe, the electric telescopic rod is fixedly installed at the bottom of the conveying cylinder, the output shaft end of the electric telescopic rod is fixedly connected to the top of the baffle plate, and an electromagnetic discharge valve is fixedly installed at the bottom end of the conveying pipe.

[0009] A further feature of this application is that a wear-resistant sealing ring is fixedly sleeved on the outer wall of the feed pipe, and the outer ring of the wear-resistant sealing ring slides and seals against the inner wall of the guide pipe.

[0010] A further feature of this application is that the diameter of the baffle plate is larger than the outer diameter of the feed hopper.

[0011] A further feature of this application is that four pads are fixedly installed at the bottom of the material conveying cylinder in pairs, arranged symmetrically.

[0012] A further feature of this application is that a motor is fixedly installed at the top of the conveying cylinder, the output shaft of the motor extends into the conveying cylinder and a spiral conveying shaft is fixedly installed thereon, and the bottom end of the spiral conveying shaft passes through the discharge pipe and extends into the guide pipe.

[0013] A further feature of this application is that the bottom inner wall of the conveying cylinder is an inclined surface structure with a concave center, and a scraper is fixedly installed on one side of the spiral conveying shaft. The scraper includes a vertical part and an inclined part. The vertical part slides against the inner wall of the conveying cylinder, and the inclined part slides against the bottom inner wall of the conveying cylinder.

[0014] A further feature of this application is that a plurality of hangers are fixedly installed on the top of the crossbeam, and the plurality of hangers are evenly distributed.

[0015] This application includes at least one of the following beneficial technical effects:

[0016] 1. This application utilizes a feeding mechanism to control the automated translation and lifting of the conveying cylinder between the jaw crusher and the powder grinding mill, so as to transfer the crushed cement raw materials from the jaw crusher to the powder grinding mill evenly. This eliminates the need for manual transfer of the crushed cement raw materials, reduces manual intervention, lowers labor costs, effectively reduces material leakage, and improves work efficiency.

[0017] 2. This application utilizes a baffle plate to ensure complete sealing of the top opening of the feed hopper, preventing cement raw materials from splashing out and ensuring a clean feeding process.

[0018] 3. This application utilizes a scraper to clean the inner wall and bottom of the material conveying cylinder, avoiding cement raw material residue, ensuring the integrity of each feeding, reducing cement raw material waste, and further improving feeding efficiency. Attached Figure Description

[0019] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0020] Figure 2 This is a front-view three-dimensional structural diagram of the feeding mechanism.

[0021] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the material conveying cylinder.

[0022] Figure 4 This is a three-dimensional structural diagram of the screw conveyor shaft and scraper.

[0023] In the diagram, 1. Jaw crusher; 2. Powder grinder; 3. Feeding mechanism; 31. Crossbeam; 32. Electric guide rail; 33. Electric slide; 34. Mounting plate; 35. Winch; 36. Wire rope; 37. Conveying cylinder; 38. U-shaped frame; 39. Discharge pipe; 310. Guide pipe; 311. Baffle plate; 312. Electric telescopic rod; 313. Wear-resistant sealing ring; 314. Pad; 315. Motor; 316. Screw conveyor shaft; 317. Scraper; 318. Feed inlet; 319. Hanger; 320. Electromagnetic discharge valve. Detailed Implementation

[0024] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a dry process cement production line, including a jaw crusher 1 and a powder grinding mill 2 fixedly placed on the ground of a cement production workshop, and a feeding mechanism 3 hoisted and fixed inside the cement production workshop. A discharge pipe is fixedly installed on the right side of the jaw crusher 1. The jaw crusher 1 is used to crush the raw materials (such as limestone) for cement production. The discharge pipe is used to discharge the crushed cement raw materials. The powder grinding mill 2 is used to grind the crushed cement raw materials into powdered cement raw materials. A feed hopper is fixedly installed on the top of the powder grinding mill 2. The feed hopper is used to guide the crushed cement raw materials into the powder grinding mill 2. The jaw crusher 1 and the powder grinding mill 2 are commercially available. The structure and working principle of the jaw crusher 1 and the powder grinding mill 2 are mature technologies in this field and have been fully disclosed. Therefore, they will not be described in detail here.

[0026] In this embodiment, the feeding mechanism 3 is used to uniformly feed the crushed cement raw materials into the powder grinding mill 2. The feeding mechanism 3 includes a crossbeam 31, an electric guide rail 32, an electric slide block 33, a mounting plate 34, a winch 35, a wire rope 36, a conveying cylinder 37, a discharge pipe 39, and a cement raw material conveying assembly. The electric guide rail 32 is fixedly installed at the bottom of the crossbeam 31, the electric slide block 33 is slidably installed on the electric guide rail 32, the mounting plate 34 is fixedly installed at the bottom of the electric slide block 33, the winch 35 is fixedly installed at the bottom of the mounting plate 34, the wire rope 36 is wound on the winch 35, and the conveying cylinder 37 is hoisted and fixed at the bottom end of the wire rope 36 and located between the jaw crusher 1 and the powder grinding mill. Between the jaw crusher 1 and the grinding mill 2, a feed inlet 318 is provided on the top left side of the conveying cylinder 37. The discharge pipe 39 is fixedly connected to the bottom center of the conveying cylinder 37. The cement raw material guiding component is set at the bottom of the conveying cylinder 37. The cement raw material guiding component is used to guide the crushed cement raw material into the powder grinding mill 2. By using the sliding connection of the electric slide 33 on the electric guide rail 32, the conveying cylinder 37 can be automatically moved between the jaw crusher 1 and the powder grinding mill 2. The hoist 35 is used to run and unwind the wire rope 36 to control the lifting and lowering of the conveying cylinder 37. There is no need for manual transfer of crushed cement raw material, which reduces manual intervention, lowers labor costs, and improves work efficiency.

[0027] In this embodiment, a U-shaped frame 38 is fixedly installed on the top of the material conveying cylinder 37, and the bottom end of the wire rope 36 is fixedly connected to the top of the U-shaped frame 38.

[0028] In this embodiment, the cement raw material conveying assembly includes a conveying pipe 310, a baffle plate 311, and an electric telescopic rod 312. The conveying pipe 310 is slidably sleeved on the feeding pipe 39, the baffle plate 311 is fixedly sleeved on the conveying pipe 310, and the electric telescopic rod 312 is fixedly installed at the bottom of the conveying cylinder 37. The output shaft end of the electric telescopic rod 312 is fixedly connected to the top of the baffle plate 311. An electromagnetic discharge valve 320 is fixedly installed at the bottom end of the conveying pipe 310. The electric telescopic rod 312 can drive the conveying pipe 310 to slide vertically along the feeding pipe 39, which facilitates the adjustment of the extension length of the conveying pipe 310 according to the height of the top feed hopper of the powder grinding mill 2, ensuring that the crushed cement raw material falls accurately into the feed hopper and reducing dust and cement raw material spillage.

[0029] In this embodiment, a wear-resistant sealing ring 313 is fixedly sleeved on the outer wall of the feeding pipe 39. The outer ring of the wear-resistant sealing ring 313 slides and seals against the inner wall of the guide pipe 310. The design of the wear-resistant sealing ring 313 can prevent cement raw materials from remaining in the gap between the feeding pipe 39 and the guide pipe 310, thereby improving the sealing and stability of the feeding.

[0030] In this embodiment, the diameter of the baffle 311 is larger than the outer diameter of the feed hopper, which ensures that the baffle 311 completely covers the top opening of the feed hopper, preventing cement raw materials from splashing out and ensuring a clean feeding process.

[0031] In this embodiment, four symmetrical pads 314 are fixedly installed at the bottom of the conveying cylinder 37. The design of the four pads 314 can stably support the conveying cylinder 37 on the ground at a suitable height, thereby ensuring that the conveying cylinder 37 can stably receive the crushed cement raw materials discharged from the discharge pipe of the jaw crusher 1.

[0032] In this embodiment, a motor 315 is fixedly installed on the top of the conveying cylinder 37. The output shaft end of the motor 315 extends into the conveying cylinder 37 and a spiral conveying shaft 316 is fixedly installed thereon. The bottom end of the spiral conveying shaft 316 passes through the discharge pipe 39 and extends into the guide pipe 310. By using the motor 315 to drive the spiral conveying shaft 316 to rotate, the crushed cement raw materials in the conveying cylinder 37 can be efficiently conveyed to the discharge pipe 39 and the guide pipe 310, and finally enter the powder grinding mill 2 through the guide pipe 310.

[0033] In this embodiment, the bottom inner wall of the conveying cylinder 37 is a concave inclined surface structure. A scraper 317 is fixedly installed on one side of the spiral conveying shaft 316. The scraper 317 includes a vertical part and an inclined part. The vertical part slides against the inner side wall of the conveying cylinder 37, and the inclined part slides against the bottom inner wall of the conveying cylinder 37. The scraper 317 can be used to clean the inner wall and bottom of the conveying cylinder 37, avoid cement raw material residue, ensure the integrity of a single feeding, reduce cement raw material waste, and further improve feeding efficiency.

[0034] In this embodiment, multiple hangers 319 are fixedly installed on the top of the crossbeam 31, and the multiple hangers 319 are evenly distributed.

[0035] In this embodiment, it should be noted that the circuit connection and control methods of the electric guide rail 32, electric slide block 33, winch 35, electric telescopic rod 312, motor 315 and electromagnetic discharge valve 320 are mature technologies in this field, and therefore will not be described in detail here.

[0036] With the above structure, the working principle of the dry process cement production line provided in this application is as follows:

[0037] When producing cement, firstly, the electric slide 33 is controlled to slide to the left on the electric guide rail 32. The electric slide 33 drives the mounting plate 34, winch 35 and conveying cylinder 37 to move to the left. At the same time, the winch 35 is controlled to release the wire rope 36, so that the conveying cylinder 37 is lowered. The conveying cylinder 37 can be adjusted to be below the discharge pipe of the jaw crusher 1, and the four pads 314 at the bottom of the conveying cylinder 37 are supported on the ground to ensure that the conveying cylinder 37 can stably receive raw materials. Then, the jaw crusher 1 can be used to crush cement raw materials such as limestone. The crushed cement raw materials are discharged through the discharge pipe on its right side. The crushed cement raw materials enter the cylinder from the feed port 318 on the top left side of the conveying cylinder 37 through the discharge pipe, and can then be received.

[0038] After the material is received in the feeding cylinder 37, the winch 35 is controlled to run and retract the wire rope 36. The feeding cylinder 37 is lifted by the U-shaped frame 38. At the same time, the electric slide block 33 is controlled to slide to the right along the electric guide rail 32, which drives the feeding cylinder 37 to move horizontally above the feed hopper of the powder grinding mill 2. Then, the winch 35 is controlled again to run and adjust the length of the wire rope 36 so that the feeding cylinder 37 is lowered to a suitable height for subsequent feeding.

[0039] After adjusting the conveying cylinder 37 to a suitable height above the feed hopper of the powder grinding mill 2, control the electric telescopic rod 312 to extend. Its output shaft pushes the baffle 311 and the guide pipe 310 to slide downwards along the discharge pipe 39. Adjust the extension length of the guide pipe 310 to align it with the feed hopper of the powder grinding mill 2 until the baffle 311 touches the top of the feed hopper. Stop the operation of the electric telescopic rod 312. Since the diameter of the baffle 311 is larger than the outer diameter of the feed hopper, it can completely cover the opening of the feed hopper to prevent raw materials from splashing out. Open the electromagnetic discharge valve 320, and then control the motor 315 to run, driving the screw conveyor shaft 316 to rotate. The raw materials in the conveying cylinder 37 are pushed by the screw conveyor shaft 316 and discharged. Pipe 39 enters the guide pipe 310, and finally falls into the feed hopper and enters the powder grinding mill 2. During this process, the inclined surface structure of the bottom inner wall of the conveying cylinder 37 guides the raw material to gather towards the center. The scraper 317 on one side of the spiral conveying shaft 316 (the vertical part is attached to the cylinder wall and the inclined part is attached to the bottom inner wall) rotates to clean up the residual raw material and ensure that the feeding is thorough. After the feeding is completed, the motor 315 is stopped, the electromagnetic discharge valve 320 is closed, and the electric telescopic rod 312 is controlled to retract and reset, so that the baffle 311 and the guide pipe 310 rise back to their original positions. Then, the electric slide 33 is controlled to slide to the left along the electric guide rail 32 again. By following the above steps, the crushed cement raw material can continue to be transferred and transported to the powder grinding mill 2.

Claims

1. A dry process cement production line characterized in that, The system includes a jaw crusher (1) and a powder grinding mill (2) fixedly placed on the floor of the cement production workshop, and a feeding mechanism (3) hoisted and fixed inside the cement production workshop. A discharge pipe is fixedly installed on the right side of the jaw crusher (1), and a feed hopper is fixedly installed on the top of the powder grinding mill (2). The feeding mechanism (3) includes a crossbeam (31), an electric guide rail (32), an electric slide (33), a mounting plate (34), a winch (35), a wire rope (36), a conveying cylinder (37), a discharge pipe (39), and a cement raw material conveying assembly. The electric guide rail (32) is fixedly installed at the bottom of the crossbeam (31), and the electric slide (33) is slidably installed on the electric guide rail (32). The mounting plate (34) is fixedly installed at the bottom of the electric slide (33), the winch (35) is fixedly installed at the bottom of the mounting plate (34), the wire rope (36) is wound on the winch (35), the conveying cylinder (37) is hoisted and fixed at the bottom end of the wire rope (36) and located between the jaw crusher (1) and the powder grinding mill (2), the top left side of the conveying cylinder (37) is provided with a feed inlet (318), the discharge pipe (39) is fixedly connected to the bottom center of the conveying cylinder (37), the cement raw material guiding component is set at the bottom of the conveying cylinder (37), and the cement raw material guiding component is used to guide the crushed cement raw material into the powder grinding mill (2).

2. Dry process cement production line according to claim 1, characterized in that: A U-shaped frame (38) is fixedly installed on the top of the material conveying cylinder (37), and the bottom end of the wire rope (36) is fixedly connected to the top of the U-shaped frame (38).

3. The dry process cement production line according to claim 1, characterized in that: The cement raw material conveying assembly includes a conveying pipe (310), a baffle plate (311), and an electric telescopic rod (312). The conveying pipe (310) is slidably sleeved on the discharge pipe (39). The baffle plate (311) is fixedly sleeved on the conveying pipe (310). The electric telescopic rod (312) is fixedly installed at the bottom of the conveying cylinder (37). The output shaft end of the electric telescopic rod (312) is fixedly connected to the top of the baffle plate (311). An electromagnetic discharge valve (320) is fixedly installed at the bottom end of the conveying pipe (310).

4. The dry process cement production line according to claim 3, characterized in that: A wear-resistant sealing ring (313) is fixedly sleeved on the outer wall of the feed pipe (39), and the outer ring of the wear-resistant sealing ring (313) slides and seals against the inner wall of the guide pipe (310).

5. The dry process cement production line according to claim 3, characterized in that: The diameter of the baffle (311) is larger than the outer diameter of the feed hopper.

6. The dry process cement production line according to claim 1, characterized in that: The bottom of the material conveying cylinder (37) is fixedly installed with four pads (314) arranged symmetrically in pairs.

7. The dry process cement production line according to claim 3, characterized in that: A motor (315) is fixedly installed on the top of the conveying cylinder (37). The output shaft end of the motor (315) extends into the conveying cylinder (37) and a spiral conveying shaft (316) is fixedly installed thereon. The bottom end of the spiral conveying shaft (316) passes through the feed pipe (39) and extends into the guide pipe (310).

8. The dry process cement production line according to claim 7, characterized in that: The bottom inner wall of the conveying cylinder (37) is a concave inclined surface structure. A scraper (317) is fixedly installed on one side of the spiral conveying shaft (316). The scraper (317) includes a vertical part and an inclined part. The vertical part slides against the inner wall of the conveying cylinder (37), and the inclined part slides against the bottom inner wall of the conveying cylinder (37).

9. The dry process cement production line according to claim 1, characterized in that: Multiple hangers (319) are fixedly installed on the top of the crossbeam (31), and the multiple hangers (319) are evenly distributed.

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