Feed mill extension rod seal

Abstract

The utility model discloses a raw material mill draws the sealing structure of stretch rod relates to stretch rod sealing technical field, including the sealing ring main body with sealing box, the sealing ring main body is connected to the sealing box top outside, and the sealing ring main body is provided with three groups. This raw material mill draws the sealing structure of stretch rod, and the redundancy of sealing is enhanced through the setting three groups sealing ring main body, reduces the leakage risk caused by single group sealing ring main body failure, and three groups sealing ring main body have increased the sealing ring self weight, utilize the gravitational potential energy and enhance the axial movement stability, and then reduce the deviation caused by equipment vibration, and through the cooperation of no. The labyrinth seal structure is formed with no. 2 labyrinth sleeve, and then the sealing performance of raw material mill draws the stretch rod of stretch rod, prevents the phenomenon that raw material mill draws the stretch rod and appears the air leakage and the material leakage, thereby when raw material mill draws the stretch rod of stretch rod sealing structure, play the role of preventing the material leakage of convenient guaranteeing the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of tension rod sealing technology, specifically a sealing structure for a raw material mill tension rod. Background Technology

[0002] A raw material mill tension rod, also known as a raw material mill tie rod, is a rod used to connect and transmit force. It is commonly used in equipment such as raw material mills, and the tension rod is a key component of the raw material mill. Its main function is to transmit power to the grinding disc or other components to achieve the grinding and processing of raw materials. The tension rod sealing structure is a very common auxiliary tool in the use of the tension rod, mainly used to prevent material leakage.

[0003] In the operation of related equipment, the sealing performance of the tension rod is crucial. The tension rod is usually sealed with packing. This sealing method uses packing made of soft, woven thread as packing to fill the sealing cavity. Then, a certain pressure is applied to the packing to make it come into close contact with the tension rod surface to achieve a seal. However, although this tension rod sealing structure can achieve a certain sealing function, in the packing seal, because the packing is in direct contact with the shaft or shaft sleeve and rotates relative to it, a lot of friction will be generated during operation. This will lead to rapid wear of the packing, and a greater risk of air and material leakage, thus affecting the normal operation of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for a raw material grinding tension rod to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a raw material grinding stretching rod, comprising a sealing box and a sealing ring body. The sealing ring body is connected to the outer side of the top of the sealing box, and the sealing ring body is provided with three sets. A sealing ring pressure plate is connected to the top of the sealing ring body. A first labyrinth sleeve is welded to the middle of the top of the sealing ring pressure plate, and a second labyrinth sleeve is connected to the outer wall of the first labyrinth sleeve. The first labyrinth sleeve and the second labyrinth sleeve cooperate with each other to form a sealing structure.

[0006] Preferably, a base is welded to the bottom of the sealed box, and a limiting pin is welded to the middle of the bottom of the base. The base and the limiting pin form a "U" shape, and the limiting pin can be inserted into a preset limiting hole.

[0007] Preferably, the base has a threaded pin connected to the inner side of the base, and the threaded pin is distributed in a "+" shape, and the threaded pin can fix the sealing box.

[0008] Preferably, a fixing seat is attached to the inner wall of the sealing ring body, and the bottom end of the fixing seat is welded to the top of the sealing box. The fixing seats are distributed at equal angles and can limit the sealing ring body to prevent it from moving horizontally.

[0009] Preferably, the bottom end of the inner wall of the first maze sleeve is connected to a first limiting seat, and the bottom end of the outer wall of the second maze sleeve is connected to a second limiting seat. The bottom ends of both the first and second limiting seats are welded to the sealing ring pressure plate. The first and second limiting seats are both distributed in an equilateral triangle.

[0010] Preferably, the sealing ring body is a modular sealing assembly, and the sealing ring body is made of wear-resistant material.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When the sealing structure of the raw material mill stretching rod is used, the redundancy of the seal is enhanced by setting three sets of sealing ring bodies, reducing the risk of leakage caused by the failure of a single set of sealing ring bodies. In addition, the three sets of sealing ring bodies increase the weight of the sealing rings themselves, and enhance the axial movement stability by utilizing gravitational potential energy, thereby reducing the offset caused by equipment vibration. Furthermore, the labyrinth seal structure is formed by the cooperation of the first labyrinth sleeve and the second labyrinth sleeve, which improves the sealing performance of the raw material mill stretching rod and prevents air leakage and material leakage from the raw material mill stretching rod. Thus, when the sealing structure of the raw material mill stretching rod is used, it plays a role in ensuring the sealing effect and preventing material leakage. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model viewed from below;

[0014] Figure 3 This is a top-view three-dimensional structural diagram of the No. 1 maze sleeve of this utility model;

[0015] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the sealing ring body of this utility model;

[0017] Figure 6 This is a three-dimensional structural diagram of the fixing base of this utility model.

[0018] In the diagram: 1. Sealing box; 2. Sealing ring body; 3. Sealing ring pressure plate; 4. No. 1 labyrinth sleeve; 5. No. 2 labyrinth sleeve; 6. Base; 7. Limiting pin; 8. Threaded pin; 9. Fixed seat; 10. No. 1 limiting seat; 11. No. 2 limiting seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-6 This utility model provides a technical solution: a sealing structure for a raw material grinding stretching rod, including a sealing box 1 and a sealing ring body 2. The sealing ring body 2 is connected to the outer side of the top of the sealing box 1, and the sealing ring body 2 is provided with three sets. A sealing ring pressure plate 3 is connected to the top of the sealing ring body 2. A first labyrinth sleeve 4 is welded to the middle of the top of the sealing ring pressure plate 3, and a second labyrinth sleeve 5 is connected to the outer wall of the first labyrinth sleeve 4. The first labyrinth sleeve 4 and the second labyrinth sleeve 5 cooperate with each other to form a sealing structure. A base 6 is welded to the bottom of the sealing box 1, and a limiting pin 7 is welded to the middle of the bottom of the base 6. The base 6 and the limiting pin 7 have a "U" shaped structure, and the limiting pin 7 can be inserted into a preset limiting hole. Threaded pins 8 are threadedly connected to the inner side of the base 6, and the threaded pins 8 are distributed in a "+" shape. The sealing box 1 can be fixed; the inner wall of the sealing ring body 2 is fitted with a fixing seat 9, and the bottom end of the fixing seat 9 is welded to the top of the sealing box 1. The fixing seats 9 are distributed at equal angles, and the fixing seats 9 can limit the sealing ring body 2 to prevent it from moving horizontally; the bottom end of the inner wall of the first labyrinth sleeve 4 is connected to the first limiting seat 10, and the bottom end of the outer wall of the second labyrinth sleeve 5 is connected to the second limiting seat 11. The bottom ends of the first limiting seat 10 and the second limiting seat 11 are both welded to the sealing ring pressure plate 3. The first limiting seat 10 and the second limiting seat 11 are both distributed in an equilateral triangle; the sealing ring body 2 is a modular sealing component, and the sealing ring body 2 is made of wear-resistant material; by increasing the weight of the sealing ring body 2, it can run more smoothly during up and down movement due to the more stable gravity, effectively avoiding jamming.

[0021] In specific implementation, during the process of preventing leakage of the sealing structure assisting the material grinding and stretching rod, since the bottom end of the sealing box 1 is connected to the base 6, and the bottom end of the base 6 is connected to the limiting pin 7, the sealing box 1 is first moved so that the base 6 is connected to the table surface. At this time, the limiting pin 7 is inserted into the working interior, thereby limiting the sealing box 1 to prevent it from rotating freely. Since the base 6 and the threaded pin 8 are threadedly connected, the threaded pin 8 is then rotated downwards to insert it into the working interior, thereby fixing the sealing box 1 to ensure that it is installed firmly and that its level meets the requirements. Since the top center of the sealing box 1 is connected to the fixed seat 9, the sealing ring body 2 is then moved so that its inner wall fits against the outer wall of the fixed seat 9, thereby assisting in limiting the sealing ring body 2 to prevent it from moving horizontally. Then, the three sets of sealing ring bodies 2 are installed in sequence.

[0022] Because the top of the sealing ring pressure plate 3 is welded with a first limiting seat 10 and a second limiting seat 11 with equal included angles, the first labyrinth sleeve 4 is then moved so that its inner wall fits against the outer wall of the first limiting seat 10, and then the second limiting seat 11 is moved so that its outer wall fits against the second limiting seat 11, thereby limiting the first labyrinth sleeve 4 and the second labyrinth sleeve 5 to prevent them from rotating. Then the first labyrinth sleeve 4 and the second labyrinth sleeve 5 are welded and installed to prevent the first labyrinth sleeve 4 and the second labyrinth sleeve 5 from moving arbitrarily and affecting the installation.

[0023] At this point, the redundancy and reliability of the seal are enhanced by three sets of sealing ring bodies 2. The redundancy design significantly improves the fault tolerance of the sealing system and reduces the risk of leakage caused by the failure of a single set of sealing ring bodies 2. In addition, the three sets of sealing ring bodies 2 increase the weight of the sealing rings themselves, so that they can run more smoothly during up and down movement with the help of more stable gravity, effectively avoiding jamming. Furthermore, the gravitational potential energy enhances the axial movement stability, which can reduce the offset caused by equipment vibration, thereby ensuring the continuity and stability of equipment operation.

[0024] Since the No. 1 labyrinth sleeve 4 and the No. 2 labyrinth sleeve 5 work together to form a labyrinth sealing structure, a multi-stage labyrinth sealing system can be formed by upgrading the performance of the sealing ring and designing the upper and lower sleeves together. This significantly improves the sealing performance of the raw material mill tension rod, thereby preventing air and material leakage from the raw material mill tension rod. When the sealing structure of the raw material mill tension rod is used, it plays a role in ensuring the sealing effect and preventing material leakage.

[0025] In summary, when this material mill tension rod sealing structure is used, the redundancy of the seal is enhanced by setting three sets of sealing ring bodies 2, reducing the risk of leakage caused by the failure of a single set of sealing ring bodies 2. In addition, the three sets of sealing ring bodies 2 increase the weight of the sealing rings themselves, and enhance the axial movement stability by utilizing gravitational potential energy, thereby reducing the offset caused by equipment vibration. Furthermore, the labyrinth seal structure is formed by the first labyrinth sleeve 4 and the second labyrinth sleeve 5, which improves the sealing performance of the material mill tension rod and prevents air leakage and material leakage from the material mill tension rod. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing structure for a raw material grinding tension rod, comprising a sealing box (1) and a sealing ring body (2), characterized in that: The sealing box (1) is connected to a sealing ring body (2) on the outer side of its top, and the sealing ring body (2) is provided with three sets. The sealing ring body (2) is connected to a sealing ring pressure plate (3) at its top. A first labyrinth sleeve (4) is welded to the middle of the top of the sealing ring pressure plate (3), and a second labyrinth sleeve (5) is connected to the outer wall of the first labyrinth sleeve (4). The first labyrinth sleeve (4) and the second labyrinth sleeve (5) cooperate with each other to form a sealing structure.

2. The sealing structure for the raw material mill tension rod according to claim 1, characterized in that: The sealing box (1) has a base (6) welded to its bottom end, and a limiting pin (7) is welded to the middle of the bottom end of the base (6). The base (6) and the limiting pin (7) form a "U" shape, and the limiting pin (7) can be inserted into a preset limiting hole.

3. The sealing structure for the raw material mill tension rod according to claim 2, characterized in that: The base (6) has a threaded pin (8) on its outer side and internally threaded, and the threaded pin (8) is distributed in a "+" shape, and the threaded pin (8) can fix the sealing box (1).

4. The sealing structure for the raw material mill tension rod according to claim 3, characterized in that: The inner wall of the sealing ring body (2) is fitted with a fixing seat (9), and the bottom end of the fixing seat (9) is welded to the top of the sealing box (1). The fixing seats (9) are distributed at equal angles, and the fixing seats (9) can limit the sealing ring body (2) to prevent it from moving horizontally.

5. The sealing structure for the raw material mill tension rod according to claim 4, characterized in that: The bottom of the inner wall of the first maze sleeve (4) is connected to the first limiting seat (10), and the bottom of the outer wall of the second maze sleeve (5) is connected to the second limiting seat (11). The bottom ends of the first limiting seat (10) and the second limiting seat (11) are both welded to the sealing ring pressure plate (3). The first limiting seat (10) and the second limiting seat (11) are both arranged in an equilateral triangle.

6. The sealing structure for the raw material mill tension rod according to claim 1, characterized in that: The sealing ring body (2) is a modular sealing assembly, and the sealing ring body (2) is made of wear-resistant material.

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