Cement grinding head sealing structure
By designing a cement grinding head sealing structure including sealing rubber rings, limiting parts and felt strips, the problem of poor sealing between the grinding head and the cutting slip in cement production is solved, and effective sealing of cement powder and improved production efficiency is achieved.
Patent Information
- Application Number
- CN202421307734.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the cement production process, poor sealing is likely to occur between the grinding head of the ball mill and the stripper, causing the cement raw material powder to leak out from the gap, affecting production efficiency.
A cement grinding head sealing structure is designed, including a cutting slip, grinding head body, sealing assembly and connecting assembly. The sealing assembly consists of a sealing rubber ring, a limiting member and a felt strip. It is fixedly connected to the sealing ring and the sealing rubber ring, the sliding connection between the sealing rubber ring and the cutting slip, and the setting of the limiting member and the pressurized spring to reduce the damage to the sealing assembly by vibration when the grinding head rotates.
Effectively prevent cement raw material powder from leaking out from the gap between the grinding head and the cutting slip, improve the efficiency of cement production and extend the service life of sealing components.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cement production and processing, and in particular to a cement grinding head sealing structure. Background Art
[0002] Ball mill is the key equipment for crushing materials after they are broken. This type of grinding mill is a mill that is loaded with a certain number of steel balls as grinding media. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal beneficiation, glass and ceramics and other production industries, for dry or wet grinding of various ores and other grindable materials.
[0003] The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. The cylinder is a long cylinder with grinding bodies inside. The cylinder is made of steel plates and is fixed to the cylinder by steel linings. The grinding bodies are generally steel balls and are loaded into the cylinder according to different diameters and a certain proportion. The grinding bodies can also be made of steel segments, which are selected according to the particle size of the grinding materials. The materials are loaded into the cylinder through the hollow shaft at the feeding end of the ball mill. When the cylinder of the ball mill rotates, the grinding bodies are attached to the cylinder linings and are carried away by the cylinder due to inertia, centrifugal force, and friction. When they are brought to a certain height, they are thrown down due to their own gravity. The falling grinding bodies crush the materials in the cylinder like projectiles.
[0004] At the end of the ball mill, there is usually a feed chute that is rotatably connected to the grinding head. In the cement production industry, cement raw materials enter the ball mill from the feed chute, and the ball mill rotates to crush the cement raw materials. During operation, poor sealing is likely to occur between the grinding head and the feed chute, and cement raw material powder leaks out from the gap between the feed chute and the grinding head, affecting cement production efficiency. Utility Model Content
[0005] In order to improve the production efficiency of cement, the present application provides a cement grinding head sealing structure.
[0006] The cement grinding head sealing structure provided in this application adopts the following technical solution:
[0007] A cement grinding head sealing structure comprises a material discharge chute, a grinding head body, a sealing assembly and a connecting assembly; one end of the material discharge chute is connected to a transportation pipeline of cement raw materials, and the other end is inserted into an end cavity of the grinding head body;
[0008] The connecting assembly comprises a sealing ring, which is coaxially sleeved on the unloading chute and fixedly connected to the grinding head body;
[0009] The sealing assembly includes a sealing rubber ring and a limiting member, wherein the sealing rubber ring is coaxially sleeved on the material discharge chute, and the sealing rubber ring is installed on the side of the sealing ring away from the grinding head body, the sealing rubber ring is coaxially fixedly connected with the sealing ring, and the sealing rubber ring is slidably connected with the material discharge chute;
[0010] The limiting member is installed on the unloading chute, and the limiting member abuts against an end of the sealing rubber ring away from the sealing ring.
[0011] By adopting the above technical solution, a cement grinding head sealing mechanism is designed, and a connecting component is arranged between the sealing rubber ring and the grinding head body, thereby realizing a fixed connection between the sealing rubber ring and the grinding head body, and the sealing rubber ring is rotatably connected to the discharge chute. The dust of the cement raw material is blocked by the second sealing ring, thereby preventing cement powder from scattering during the processing of the cement grinding head, thereby facilitating improving the production efficiency of cement; at the same time, the set limiter is convenient for reducing the damage to the sealing rubber ring caused by the vibration of the grinding head body during rotation, thereby facilitating preventing cement from leaking from the gap between the sealing rubber ring and the discharge chute.
[0012] In a specific feasible implementation scheme, the limiting member includes a first limiting ring and a first pressure spring, the first limiting ring is coaxially sleeved on one end of the discharge chute extending out of the grinding head body, and the first limiting ring is fixedly connected to the tube wall of the discharge chute; the first pressure spring is coaxially sleeved on the discharge chute, and one end of the first pressure spring abuts against the first limiting ring, and the other end abuts against the sealing rubber ring.
[0013] By adopting the above technical solution, a limiting member is set, and the first limiting ring is fixedly set on the discharge chute to support the first pressure spring. The first pressure spring is abutted between the first limiting ring and the sealing rubber ring. The external force exerted on the sealing rubber ring and the discharge chute is converted into elastic deformation of the first pressure spring, so as to avoid vibration of the grinding head body during rotation and damage to the sealing rubber ring, thereby preventing cement from leaking out of the gap between the sealing rubber ring and the discharge chute.
[0014] In a specific feasible implementation scheme, the limiting member includes a second limiting ring and a plurality of second pressure springs, the second limiting ring is sleeved on one end of the discharge chute extending out of the grinding head body, and the second limiting ring is fixedly connected to the tube wall of the discharge chute; the plurality of second pressure springs are evenly distributed along the circumferential direction of the second limiting ring, and one end of the second pressure spring is fixedly connected to the second limiting ring, and the other end abuts against the sealing rubber ring.
[0015] By adopting the above technical solution, a limiting member is set, and a second limiting ring is fixedly set on the discharge chute to support multiple second pressure springs. Multiple second pressure springs are set between the first limiting ring and the sealing rubber ring. Multiple second pressure springs share the external force exerted on the sealing rubber ring and the discharge chute and convert it into elastic deformation, so as to prevent the vibration of the grinding head body during rotation and damage the sealing rubber ring, thereby preventing cement from leaking out of the gap between the sealing rubber ring and the discharge chute.
[0016] In a specific implementation scheme, the limiting member includes a first adjustment ring, a first adjustment screw, a third limiting ring and a third pressure spring;
[0017] The first adjustment ring is coaxially sleeved on one end of the material discharge chute extending out of the grinding head body, and the first adjustment ring is fixedly connected to the material discharge chute;
[0018] The third limiting ring is coaxially sleeved on one end of the material discharge chute extending out of the grinding head body, the third limiting ring is located between the first adjustment ring and the grinding head body, and the third limiting ring is slidably connected to the material discharge chute;
[0019] There are multiple first adjusting screws, and the multiple first adjusting screws are evenly distributed along the circumferential direction of the first adjusting ring. One end of the first adjusting screw passes through the first adjusting ring and is rotatably connected to the third limiting ring, and the first adjusting screw is threadedly connected to the first adjusting ring.
[0020] The third pressure spring is coaxially sleeved on the unloading chute, one end of the third pressure spring abuts against the third limiting ring, and the other end abuts against the sealing rubber ring.
[0021] By adopting the above technical scheme, a limit piece is set, the first adjustment ring is fixedly set on the discharge chute, multiple first adjustment screws pass through the first adjustment ring and are rotatably connected with the third limit ring, and a third pressure spring is arranged between the third limit ring and the sealing rubber ring. By changing the length of the first adjusting screw extending out of the first adjustment ring, it is convenient to change the deformation of the third pressure spring between the third limit ring and the sealing rubber ring, thereby improving the shock-absorbing effect of the third pressure spring on the sealing rubber ring, avoiding the vibration of the grinding head body during rotation and causing damage to the sealing rubber ring, thereby facilitating preventing cement from leaking from the gap between the sealing rubber ring and the discharge chute.
[0022] In a specific possible implementation scheme, the limiting member includes a second adjustment ring, a second adjustment screw, a fourth limiting ring and a plurality of fourth pressure springs;
[0023] The second adjustment ring is coaxially sleeved on one end of the material discharge chute extending from the grinding head body, and the second adjustment ring is fixedly connected to the material discharge chute;
[0024] The second adjustment ring is coaxially sleeved on the side wall of the material discharge chute, and the second adjustment ring is slidably connected to the side wall of the material discharge chute;
[0025] The fourth limiting ring is coaxially sleeved on one end of the material discharge chute extending from the grinding head body, the fourth limiting ring is located between the second adjustment ring and the grinding head body, and the fourth limiting ring is slidably connected to the material discharge chute;
[0026] The second adjusting screw is provided with a plurality of them, and the plurality of the second adjusting screws are evenly distributed along the circumferential direction of the second adjusting ring, one end of the second adjusting screw passes through the second adjusting ring and is rotatably connected to the fourth limiting ring, and the second adjusting screw is threadedly connected to the second adjusting ring;
[0027] A plurality of fourth pressure springs are evenly distributed along the circumferential direction of the fourth limiting ring, and one end of the fourth pressure spring abuts against the fourth limiting ring, and the other end abuts against the sealing rubber ring.
[0028] By adopting the above technical scheme, a limit piece is set, and the second adjustment ring is fixedly set on the discharge chute. Multiple second adjusting screws pass through the second adjusting ring and are rotatably connected with the fourth limit ring. A fourth pressure spring is arranged between the fourth limit ring and the sealing rubber ring. By changing the length of the second adjusting screw extending out of the second adjusting ring, it is convenient to change the deformation of the fourth pressure spring between the fourth limit ring and the sealing rubber ring, thereby improving the shock-absorbing effect of the fourth pressure spring on the sealing rubber ring. At the same time, multiple fourth pressure springs share the external force on the sealing rubber ring, thereby preventing the grinding head body from vibrating during rotation and causing damage to the sealing rubber ring, thereby facilitating preventing cement from leaking from the gap between the sealing rubber ring and the discharge chute.
[0029] In a specific possible implementation scheme, it also includes a sealing booster ring, one end of which is provided with an annular groove, the sealing booster ring is coaxially sleeved on the discharge chute, and the sealing booster ring is slidingly connected to the discharge chute, the first pressure spring, the second pressure spring, the third pressure spring or the fourth pressure spring has one end close to the sealing rubber ring embedded in the annular groove, and the other end of the sealing booster ring is in contact with the sealing rubber ring.
[0030] By adopting the above-mentioned technical scheme, a sealing boosting ring is set, and the first pressure spring, the second pressure spring, the third pressure spring or the fourth pressure spring are embedded in the annular groove of the sealing boosting ring, so that the first pressure spring, the second pressure spring, the third pressure spring or the fourth pressure spring can stably abut the sealing rubber ring, thereby improving the shock-absorbing effect of the sealing rubber ring.
[0031] In a specific feasible implementation manner, the sealing boost ring is inclined at a side close to the sealing rubber ring, and the thickness of the sealing boost ring gradually increases from the side close to the central axis of the discharge chute to the side away from the central axis of the discharge chute, and the inclined side wall of the sealing boost ring abuts against the sealing rubber ring.
[0032] By adopting the above technical solution, the inclined side wall arranged on the sealing booster ring abuts against the sealing rubber ring, so that when the grinding head body rotates, the sealing rubber ring is subjected to more concentrated force, which facilitates improving the shock-absorbing quality of the sealing rubber ring.
[0033] In a specific possible implementation manner, the sealing assembly further comprises a felt strip, the felt strip is wrapped around a side wall of one end of the discharge chute extending into the grinding head body, and the felt strip is located between the discharge chute and the grinding head body.
[0034] By adopting the above technical solution, the felt strips are arranged to seal the gap between the grinding head body and the feeding chute when the grinding head body rotates, so as to prevent cement powder from escaping from the gap and improve the cement production efficiency.
[0035] In a specific embodiment, the felt strip is coated with a butter layer.
[0036] By adopting the above technical solution and setting the butter layer, the friction between the cement grinding head and the felt strip can be reduced when the cement grinding head rotates, thereby reducing the wear of the felt strip and increasing the service life of the felt strip.
[0037] In summary, the present application includes at least one of the following beneficial technical effects:
[0038] 1. The designed cement grinding head sealing mechanism, the sealing component is arranged between the feeding chute and the grinding head body, which enhances the sealing effect between the feeding chute and the grinding head; when the cement raw materials are crushed, it is convenient to prevent the cement raw material powder from leaking from the gap between the feeding chute and the grinding head, thereby facilitating the improvement of cement production efficiency.
[0039] 2. The limiter is provided to reduce the vibration of the grinding head body during rotation, thereby reducing the damage to the sealing rubber ring and preventing cement from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] Figure 1 It is a schematic diagram of the overall structure of a cement grinding head sealing structure in Example 1.
[0041] Figure 2 It is a partial view of a cement grinding head sealing mechanism of Example 1, which is intended to illustrate the sealing component and the connecting component.
[0042] Figure 3It is a partial view of a cement grinding head sealing mechanism of Example 2, which is intended to illustrate the sealing component and the connecting component.
[0043] Figure 4 It is a partial view of a cement grinding head sealing mechanism of Example 3, which is intended to illustrate the sealing component and the connecting component.
[0044] Figure 5 It is a partial view of a cement grinding head sealing mechanism of Example 4, which is intended to illustrate the sealing component and the connecting component.
[0045] Description of the drawings: 1. Feeding chute; 2. Grinding head body; 3. Sealing assembly; 31. Sealing rubber ring; 32. Limiting piece; 32A. First limiting ring; 32B. First pressure spring; 32C. Second limiting ring; 32D. Second pressure spring; 32E. First adjusting ring; 32F. First adjusting screw; 32G. Third limiting ring; 32H. Third pressure spring; 32I. Second adjusting ring; 32J. Second adjusting screw; 32K. Fourth limiting ring; 32L. Fourth pressure spring; 33. Sealing boosting ring; 331. Annular groove; 34. Felt strip; 341. Butter layer; 4. Connecting assembly; 41. Sealing ring. DETAILED DESCRIPTION
[0046] The following is combined with Figure 1-5 This application is described in further detail.
[0047] The embodiment of the present application discloses a cement grinding head sealing structure.
[0048] Embodiment 1:
[0049] Reference Figure 1 and Figure 2 A cement grinding head sealing structure includes a discharge chute 11, a grinding head body 2, a sealing assembly 3 and a connecting assembly 4; the grinding head body 2 is placed horizontally, one end of the discharge chute 1 is inserted into the end cavity of the grinding head body 22, the connecting assembly 4 is arranged at one end of the grinding head body 2 close to the discharge chute 1, the sealing assembly 3 is sleeved on the discharge chute 1, and the sealing assembly 3 is fixedly connected to the grinding head body 2; the connecting assembly 4 includes a sealing ring 41, the sealing ring 41 is bolted to the end face of the grinding head body 2 close to the discharge chute 1, and the sealing ring 41 is coaxially sleeved on the discharge chute 1.
[0050] Reference Figure 1 and Figure 2The sealing assembly 3 includes a sealing rubber ring 31, a stopper 32, a felt strip 42 and a sealing booster ring 5. The sealing rubber ring 31 is coaxially sleeved on the material discharge chute 1, and the sealing rubber ring 31 is installed on the side of the sealing ring 41 away from the grinding head body 2. The sealing rubber ring 31 is coaxially fixedly connected with the sealing ring 41, and the sealing rubber ring 31 is slidingly connected with the material discharge chute 1; the sealing booster ring 5 is coaxially sleeved on the material discharge chute 1, the sealing booster ring 5 is arranged between the stopper 32 and the sealing rubber ring 31, and the sealing booster ring 5 is slidingly connected with the material discharge chute 1. An annular embedding groove 51 is provided at one end of the sealing booster ring 5 away from the grinding head body 2, and the sealing booster ring 5 is inclined on the side close to the grinding head body 2. It is arranged obliquely, and the thickness of the sealing boost ring 5 gradually increases from the side close to the central axis of the material discharge chute 1 to the side away from the central axis of the material discharge chute 1, and the inclined side wall of the sealing boost ring 5 abuts against the sealing rubber ring 31; the limiter 32 is installed on the material discharge chute 1, and one end of the limiter 32 is embedded in the annular groove 51 of the sealing boost ring 5; the felt strip 42 is wound around the side wall of one end of the material discharge chute 1 extending into the grinding head body 2, and the felt strip 42 is located in the gap between the material discharge chute 1 and the grinding head body 2, and the side of the felt strip 42 in contact with the grinding head body 2 is coated with a butter layer 421 to reduce the friction between the grinding head body 2 and the material discharge chute 1, thereby increasing the service life of the felt strip 42;
[0051] Reference Figure 2 The limiting member 32 includes a first limiting ring 32A and a first pressure spring 32B. The first limiting ring 32A is coaxially sleeved on one end of the discharge chute 1 extending out of the grinding head body 2, and the first limiting ring 32A is fixedly connected to the tube wall of the discharge chute 1; the first pressure spring 32B is coaxially sleeved on the discharge chute 1, and one end of the first pressure spring 32B is in contact with the first limiting ring 32A, and the other end is embedded in the annular groove 51 of the sealing boosting ring 5.
[0052] The implementation principle of a cement grinding head sealing structure in Example 1 of the present application is as follows: when crushing cement raw materials, first, the cement raw materials enter the grinding head body 2 from the discharge chute 1, the grinding head body 2 rotates, and the steel balls inside the grinding head body 2 crush the cement raw materials. During operation, a connecting component 4 is arranged between the grinding head body 2 and the discharge chute 1, and a sealing ring 41 fixes the grinding head body 2 and the sealing component 3. The sealing component 3 is sleeved on the discharge chute 1, and a sealing rubber ring 31 and a felt strip 42 seal the gap between the discharge chute 1 and the grinding head body 2 to prevent the cement raw material powder from flowing out of the gap. At the same time, a limiting member 32 is arranged. When the grinding head body 2 is running, the first limiting ring 32A supports the first pressure spring 32B. One end of the first pressure spring 32B abuts against the first limiting ring 32A, and the other end Embedded in the embedding groove of the sealing boost ring 5, the sealing boost ring 5 abuts against the sealing rubber ring 31. When the grinding head body 2 vibrates, the sealing rubber ring 31 is deformed by the force. The sealing boost ring 5 transfers the external force to the first pressure spring 32B by abutting against the sealing rubber ring 31. The first pressure spring 32B produces elastic deformation, which reduces the external force on the sealing rubber ring 31, thereby reducing wear and preventing cement dust from leaking from the gap between the unloading chute 1 and the sealing rubber ring 31; at the same time, the felt strip 42 is provided to seal the gap between the unloading chute 1 and the grinding head body 2 to prevent cement dust from leaking from the gap between the unloading chute 1 and the grinding head body 2. The butter layer 421 coated on the contact surface between the felt strip 42 and the grinding head body 2 reduces the friction between the felt strip 42 and the grinding head body 2, thereby increasing the service life of the felt strip 42.
[0053] Embodiment 2:
[0054] Reference Figure 3 The difference between this embodiment 2 and embodiment 1 is that the limit member 32 includes a second limit ring 32C and a plurality of second pressure springs 32D. The second limit ring 32C is sleeved on the end of the unloading chute 1 extending out of the grinding head body 2, and the second limit ring 32C is fixedly connected to the tube wall of the unloading chute 1; the plurality of second pressure springs 32D are evenly distributed along the circumferential direction of the second limit ring 32C close to the end of the grinding head body 2, and one end of the second pressure spring 32D is fixedly connected to the second limit ring 32C, and the other end is embedded in the annular groove 51 of the sealing boost ring 5. The second pressure springs 32D can be two, three, or four, as long as the shock absorbing of the sealing rubber ring 31 is achieved. The present application is provided with four second pressure springs 32D.
[0055] The implementation principle of a cement grinding head sealing structure in Example 2 of the present application is as follows: when crushing cement raw materials, first, the cement raw materials enter the grinding head body 2 from the discharge chute 1, the grinding head body 2 rotates, and the steel balls inside the grinding head body 2 crush the cement raw materials. During operation, a connecting component 4 is arranged between the grinding head body 2 and the discharge chute 1, and a sealing ring 41 fixes the grinding head body 2 and the sealing component 3. The sealing component 3 is sleeved on the discharge chute 1, and the sealing rubber ring 31 and the felt strip 42 seal the gap between the discharge chute 1 and the grinding head body 2 to prevent the cement raw material powder from flowing out of the gap. At the same time, a limiting member 32 is arranged. When the grinding head body 2 is running, the second limiting ring 32C supports the multiple second pressure springs 32D. One end of the multiple second pressure springs 32D is fixedly connected to the first limiting ring 32A, and the other end of the multiple second pressure springs 32D is fixedly connected to the first limiting ring 32A. One end is embedded in the embedding groove of the sealing boost ring 5, and the sealing boost ring 5 is in contact with the sealing rubber ring 31. When the grinding head body 2 vibrates, the sealing rubber ring 31 is deformed by the force. The sealing boost ring 5 transfers the external force to the second pressure spring 32D by abutting against the sealing rubber ring 31. The second pressure spring 32D produces elastic deformation, which reduces the external force on the sealing rubber ring 31, thereby reducing wear and preventing cement dust from leaking from the gap between the unloading chute 1 and the sealing rubber ring 31; at the same time, the felt strip 42 is provided to seal the gap between the unloading chute 1 and the grinding head body 2 to prevent cement dust from leaking from the gap between the unloading chute 1 and the grinding head body 2. The butter layer 421 coated on the contact surface of the felt strip 42 and the grinding head body 2 reduces the friction between the felt strip 42 and the grinding head body 2, thereby increasing the service life of the felt strip 42.
[0056] Embodiment 3:
[0057] Reference Figure 4 , the difference between this embodiment 3 and embodiments 1 and 2 is that the limiting member 32 includes a first adjusting ring 32E, a first adjusting screw 32F, a third limiting ring 32G and a third pressure spring 32H; the first adjusting ring 32E is coaxially sleeved on the end of the material discharge chute 1 extending out of the grinding head body 2, and the first adjusting ring 32E is fixedly connected to the material discharge chute 1; the third limiting ring 32G is coaxially sleeved on the end of the material discharge chute 1 extending out of the grinding head body 2, the third limiting ring 32G is located between the first adjusting ring 32E and the grinding head body 2, and the third limiting ring 32G is fixedly connected to the material discharge chute 1. The chute 1 is slidably connected; a plurality of first adjusting screws 32F are provided, and the plurality of first adjusting screws 32F are evenly distributed along the circumferential direction of the first adjusting ring 32E close to one end of the grinding head body 2, one end of the first adjusting screw 32F passes through the first adjusting ring 32E and is rotatably connected to the third limiting ring 32G, and the first adjusting screw 32F is threadedly connected to the first adjusting ring 32E; the third pressure spring 32H is coaxially sleeved on the unloading chute 1, one end of the third pressure spring 32H is in contact with the third limiting ring 32G, and the other end is embedded in the annular groove 51 of the sealing boost ring 5.
[0058] The implementation principle of a cement grinding head sealing structure in Example 3 of the present application is as follows: when crushing the cement raw material, first, the cement raw material enters the grinding head body 2 from the discharge chute 1, the grinding head body 2 rotates, and the steel balls inside the grinding head body 2 crush the cement raw material. During operation, a connecting component 4 is arranged between the grinding head body 2 and the discharge chute 1, and a sealing ring 41 fixes the grinding head body 2 and the sealing component 3. The sealing component 3 is sleeved on the discharge chute 1, and the sealing rubber ring 31 and the felt strip 42 seal the gap between the discharge chute 1 and the grinding head body 2 to prevent the cement raw material powder from flowing out of the gap. At the same time, a limiting member 32 is arranged, and a first adjusting ring 32E is fixedly arranged on the discharge chute 1. A plurality of first adjusting screws 32F pass through the first adjusting ring 32E and are rotatably connected to the third limiting ring 32G. A third boosting ring 32G is arranged between the third limiting ring 32G and the sealing boosting ring 5. The compression spring 32H, the sealing boost ring 5 and the sealing rubber ring 31 are abutted. By changing the length of the first adjusting screw 32F extending out of the first adjusting ring 32E, it is convenient to change the deformation of the third pressure spring 32H between the third limit ring 32G and the sealing boost ring 5, thereby improving the shock-absorbing effect of the third pressure spring 32H on the sealing rubber ring 31, avoiding the vibration of the grinding head body 2 during rotation to damage the sealing rubber ring 31, and thus facilitating the prevention of cement from leaking out of the gap between the sealing rubber ring 31 and the feeding chute 1; at the same time, the set felt strip 42 seals the gap between the feeding chute 1 and the grinding head body 2 to avoid cement dust from leaking out of the gap between the feeding chute 1 and the grinding head body 2, and the butter layer 421 coated on the contact surface between the felt strip 42 and the grinding head body 2 reduces the friction between the felt strip 42 and the grinding head body 2, thereby improving the service life of the felt strip 42.
[0059] Embodiment 4:
[0060] Reference Figure 5, the difference between this embodiment 4 and embodiment 1, embodiment 2 and embodiment 3 is that the limiting member 32 includes a second adjusting ring 32I, a second adjusting screw 32J, a fourth limiting ring 32K and a plurality of fourth pressure springs 32L; the second adjusting ring 32I is coaxially sleeved on the end of the unloading chute 1 extending out of the grinding head body 2, and the second adjusting ring 32I is fixedly connected to the unloading chute 1; the fourth limiting ring 32K is coaxially sleeved on the end of the unloading chute 1 extending out of the grinding head body 2, the fourth limiting ring 32K is located between the second adjusting ring 32I and the grinding head body 2, and the fourth limiting ring 32K is slidably connected to the unloading chute 1; a plurality of second adjusting screws 32J are provided, and the plurality of second adjusting screws 32J are arranged along the first The second adjustment ring 32I is distributed in the circumferential direction near one end of the grinding head body 2, one end of the second adjustment screw 32J passes through the second adjustment ring 32I and is rotatably connected to the fourth limiting ring 32K, and the second adjustment screw 32J is threadedly connected to the second adjustment ring 32I; multiple fourth pressure springs 32L are evenly distributed along the circumferential direction of the fourth limiting ring 32K near one end of the grinding head body 2, and one end of the fourth pressure spring 32L is fixedly connected to the fourth limiting ring 32K, and the other end is embedded in the annular groove 51 of the sealing boost ring 5. The fourth pressure springs 32L can be two, three, or four, as long as the shock absorbing of the sealing rubber ring 31 is achieved. The present application is provided with four fourth pressure springs 32L.
[0061] The implementation principle of a cement grinding head sealing structure in Example 4 of the present application is as follows: when crushing the cement raw material, first, the cement raw material enters the grinding head body 2 from the discharge chute 1, the grinding head body 2 rotates, and the steel balls inside the grinding head body 2 crush the cement raw material. During operation, a connecting component 4 is arranged between the grinding head body 2 and the discharge chute 1, and a sealing ring 41 fixes the grinding head body 2 and the sealing component 3. The sealing component 3 is sleeved on the discharge chute 1, and the sealing rubber ring 31 and the felt strip 42 seal the gap between the discharge chute 1 and the grinding head body 2 to prevent the cement raw material powder from flowing out of the gap. At the same time, a limiting member 32 is arranged, and a second adjusting ring 32I is fixedly arranged on the discharge chute 1. A plurality of second adjusting screws 32J pass through the second adjusting ring 32I and are rotatably connected to the fourth limiting ring 32K. A fourth pressure spring 32L is arranged between the fourth limiting ring 32K and the sealing rubber ring 31. By changing the length of the second adjusting screw 32J extending out of the second adjusting ring 32I, it is convenient to change the deformation of the fourth pressure spring 32L between the fourth limit ring 32K and the sealing boost ring 5, thereby improving the shock-absorbing effect of the fourth pressure spring 32L on the sealing rubber ring 31. Multiple fourth pressure springs 32L share the external force on the sealing rubber ring 31 to prevent the grinding head body 2 from vibrating during rotation and causing damage to the sealing rubber ring 31, thereby preventing cement from leaking out of the gap between the sealing rubber ring 31 and the feeding chute 1; at the same time, the set felt strip 42 seals the gap between the feeding chute 1 and the grinding head body 2 to prevent cement dust from leaking out of the gap between the feeding chute 1 and the grinding head body 2. The butter layer 421 coated on the contact surface of the felt strip 42 and the grinding head body 2 reduces the friction between the felt strip 42 and the grinding head body 2, thereby improving the service life of the felt strip 42.
[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cement grinding head sealing structure, characterized in that: It comprises a material discharge chute (1), a grinding head body (2), a sealing component (3) and a connecting component (4); one end of the material discharge chute (1) is connected to a transportation pipeline for cement raw materials, and the other end is inserted into the end cavity of the grinding head body (2); The connecting assembly (4) comprises a sealing ring (41), the sealing ring (41) is coaxially sleeved on the unloading chute (1), and the sealing ring (41) is fixedly connected to the grinding head body (2); The sealing assembly (3) comprises a sealing rubber ring (31) and a stopper (32); the sealing rubber ring (31) is coaxially sleeved on the material discharge chute (1), and the sealing rubber ring (31) is installed on the side of the sealing ring (41) away from the grinding head body (2); the sealing rubber ring (31) is coaxially fixedly connected with the sealing ring (41), and the sealing rubber ring (31) is slidably connected with the material discharge chute (1); The limiting member (32) is mounted on the unloading chute (1), and the limiting member (32) abuts against an end of the sealing rubber ring (31) away from the sealing ring (41).
2. A cement grinding head sealing structure according to claim 1, characterized in that: The limiting member (32) includes a first limiting ring (32A) and a first pressure spring (32B), wherein the first limiting ring (32A) is coaxially sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), and the first limiting ring (32A) is fixedly connected to the tube wall of the material discharge chute (1); the first pressure spring (32B) is coaxially sleeved on the material discharge chute (1), and one end of the first pressure spring (32B) is in contact with the first limiting ring (32A), and the other end is in contact with the sealing rubber ring (31).
3. A cement grinding head sealing structure according to claim 2, characterized in that: The limiting member (32) comprises a second limiting ring (32C) and a plurality of second pressure springs (32D), wherein the second limiting ring (32C) is sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), and the second limiting ring (32C) is fixedly connected to the tube wall of the material discharge chute (1); the plurality of second pressure springs (32D) are evenly distributed along the circumferential direction of the second limiting ring (32C), and one end of the second pressure spring (32D) is fixedly connected to the second limiting ring (32C), and the other end is in contact with the sealing rubber ring (31).
4. A cement grinding head sealing structure according to claim 3, characterized in that: The limiting member (32) comprises a first adjusting ring (32E), a first adjusting screw rod (32F), a third limiting ring (32G) and a third pressure spring (32H); The first adjustment ring (32E) is coaxially sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), and the first adjustment ring (32E) is fixedly connected to the material discharge chute (1); The third limiting ring (32G) is coaxially sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), the third limiting ring (32G) is located between the first adjustment ring (32E) and the grinding head body (2), and the third limiting ring (32G) is slidably connected to the material discharge chute (1); A plurality of the first adjusting screws (32F) are provided, and the plurality of the first adjusting screws (32F) are evenly distributed along the circumferential direction of the first adjusting ring (32E); one end of the first adjusting screw (32F) passes through the first adjusting ring (32E) and is rotatably connected to the third limiting ring (32G), and the first adjusting screw (32F) is threadedly connected to the first adjusting ring (32E); The third pressure spring (32H) is coaxially sleeved on the unloading chute (1); one end of the third pressure spring (32H) abuts against the third limiting ring (32G), and the other end abuts against the sealing rubber ring (31).
5. A cement grinding head sealing structure according to claim 4, characterized in that: The limiting member (32) comprises a second adjusting ring (32I), a second adjusting screw rod (32J), a fourth limiting ring (32K) and a plurality of fourth pressure springs (32L); The second adjustment ring (32I) is coaxially sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), and the second adjustment ring (32I) is fixedly connected to the material discharge chute (1); The second adjustment ring (32I) is coaxially sleeved on the side wall of the material discharge chute (1), and the second adjustment ring (32I) is slidably connected to the side wall of the material discharge chute (1); The fourth limiting ring (32K) is coaxially sleeved on one end of the material discharge chute (1) extending out of the grinding head body (2), the fourth limiting ring (32K) is located between the second adjustment ring (32I) and the grinding head body (2), and the fourth limiting ring (32K) is slidably connected to the material discharge chute (1); A plurality of the second adjusting screws (32J) are provided, and the plurality of the second adjusting screws (32J) are evenly distributed along the circumferential direction of the second adjusting ring (32I); one end of the second adjusting screw (32J) passes through the second adjusting ring (32I) and is rotatably connected to the fourth limiting ring (32K), and the second adjusting screw (32J) is threadedly connected to the second adjusting ring (32I); A plurality of fourth pressure springs (32L) are evenly distributed along the circumferential direction of the fourth limiting ring (32K), and one end of the fourth pressure spring (32L) abuts against the fourth limiting ring (32K), and the other end abuts against the sealing rubber ring (31).
6. A cement grinding head sealing structure according to claim 5, characterized in that: It also includes a sealing boost ring (33), one end of which is provided with an annular groove (331), the sealing boost ring (33) is coaxially sleeved on the discharge chute (1), and the sealing boost ring (33) is slidably connected to the discharge chute (1), the first pressure spring (32B), the second pressure spring (32D), the third pressure spring (32H) or the fourth pressure spring (32L) is embedded in the annular groove (331) near one end of the sealing rubber ring (31), and the other end of the sealing boost ring (33) is in contact with the sealing rubber ring (31).
7. A cement grinding head sealing structure according to claim 6, characterized in that: The sealing boost ring (33) is arranged obliquely on a side close to the sealing rubber ring (31), and the thickness of the sealing boost ring (33) gradually increases from a side close to the central axis of the material discharge chute (1) to a side away from the central axis of the material discharge chute (1), and the inclined side wall of the sealing boost ring (33) abuts against the sealing rubber ring (31).
8. A cement grinding head sealing structure according to claim 1, characterized in that: The sealing assembly (3) further comprises a felt strip (34), wherein the felt strip (34) is wound around the side wall of one end of the material discharge chute (1) extending into the grinding head body (2), and the felt strip (34) is located between the material discharge chute (1) and the grinding head body (2).
9. A cement grinding head sealing structure according to claim 8, characterized in that: The felt strip (34) is coated with a butter layer (341).