Solid material dynamic sealing mechanism of rotary equipment

Abstract

This utility model provides a dynamic sealing mechanism for solid materials in a rotating device, including a first support ring, a sealing panel, and a first sealing ring. The first support ring is fixedly sleeved on the outer wall of the rotating housing. The sealing panel is generally annular and is fixed against the outer wall of the fixed housing, with one end face of the sealing panel extending close to the first support ring. At least one annular sealing filler groove is provided on the inner circular surface of the first sealing ring, and each groove is filled with sealing filler. The first sealing ring is sleeved on the outer circular surface of the sealing panel, and its end face is fixed against the end face of the first support ring. A clamp is fitted on the outer circular surface of the first sealing ring, which holds the first sealing ring tightly against the sealing panel, ensuring a tight seal between the sealing filler and the sealing panel. This dynamic sealing mechanism can seal the gap between the rotating housing and the fixed housing of the rotating device, providing good sealing performance and a long service life.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically to a dynamic sealing mechanism for solid materials in rotating equipment. Background Technology

[0002] Rotary equipment can be used for mixing and grinding solid materials. Because the fixed and rotating housings of this equipment are rotatably connected, a gap exists between them. If this gap is not sealed, solid materials can leak out, contaminating the production environment and wasting the materials. Therefore, a sealing mechanism is typically required to seal the gap between the fixed and rotating housings. Furthermore, rotating equipment usually contains air pressure, requiring the sealing mechanism to not only provide a good seal for the solid materials but also to have a long service life. Summary of the Invention

[0003] This utility model provides a dynamic sealing mechanism for solid materials in rotating equipment, which seals the gap between the rotating shell and the fixed shell of the rotating equipment, and has a good sealing effect and a long service life.

[0004] The technical solution adopted to achieve the above-mentioned objectives of this utility model is as follows: A dynamic sealing mechanism for solid materials in a rotating device, the rotating device comprising a fixed housing and a rotating housing connected to each other, the fixed housing and the rotating housing rotating relative to each other, the gap at the connection between the fixed housing and the rotating housing forming a sealing cavity, the dynamic sealing mechanism for solid materials in the rotating device being mounted on the fixed housing and the rotating housing and sealing the sealing cavity, the dynamic sealing mechanism for solid materials in the rotating device comprising: The first support ring is fixedly sleeved on the outer wall of the rotating shell; The sealing panel is generally annular and is fixed to the outer wall of the fixed housing, with one end of the sealing panel extending close to the first support ring; The first sealing ring has at least one annular sealing filler groove on its inner circular surface, and the sealing filler groove is filled with sealing filler. The first sealing ring is sleeved on the outer circular surface of the sealing panel, and the end face of the first sealing ring is abutted and fixed to the end face of the first support ring. A clamp is sleeved on the outer circular surface of the first sealing ring, which clamps the first sealing ring tightly on the sealing panel and makes the sealing filler and the sealing panel in close contact for sealing.

[0005] The rotating equipment solid material dynamic sealing mechanism also includes a second sealing ring, which is sleeved on the rotating equipment. One end face of the second sealing ring is pressed against the end face of the first support ring, and the outer circular surface of the second sealing ring is pressed against the inner circular surface of the sealing panel, thereby sealing the gap between the first support ring and the sealing panel.

[0006] The second sealing ring is pressed against the first support ring and the sealing panel by a pressure plate.

[0007] The second sealing ring is made of packing.

[0008] A second support ring is provided between the first support ring and the first sealing ring. The cross-section of the second support ring is "I" shaped, including two first connecting rings that are fixed to the first support ring and the first sealing ring, and a second connecting ring that is connected between the two first connecting rings. The second connecting ring is provided with a grease injection hole that communicates with the outside and the sealing cavity.

[0009] The rotating device is fitted with an integrally annular storage shell, the end face of which is fixed to the end face of the first support ring, and both the sealing panel and the first sealing ring are located inside the storage shell.

[0010] A fixing ring is provided on the outer circumference of the first sealing ring near the first support ring. The fixing ring and the first sealing ring are connected as an integral structure. The fixing ring is fixed to the end face of the first support ring by a pressure plate, so that the first sealing ring is fixed to the first support ring.

[0011] The sealing packing is packing.

[0012] The outer circumference of the first sealing ring is provided with an annular clamping groove, and the clamps are installed in the clamping groove; the number and position of the clamps correspond to the number and position of the sealing filler grooves on the first sealing ring.

[0013] Both the fixed housing and the rotating housing are equipped with equipment flanges at their connecting ends. The fixed housing and the rotating housing are rotatably connected through the equipment flanges. A connecting flange is fixed to the inner circular surface of the sealing panel. The connecting flange is fixedly connected to the equipment flange on the fixed housing, so that the sealing panel is tightly against the outer wall of the equipment flange.

[0014] Compared with the prior art, the rotary equipment solid material dynamic sealing mechanism provided by this utility model has the following advantages: 1. In this utility model, the solid material dynamic sealing mechanism of the rotating equipment seals the gap between the rotating shell and the fixed shell of the rotating equipment through the first sealing ring and the second sealing ring. The double sealing ensures the sealing effect and effectively avoids the leakage of solid materials.

[0015] 2. The first support ring and sealing panel in this utility model facilitate the installation of the first sealing ring and make the sealing mechanism easy to install and maintain; at the same time, the entire sealing mechanism is installed stably and reliably.

[0016] 3. In this utility model, the grease injection hole on the second support ring allows lubricating grease to be injected from the outside to lubricate the sealing packing and the second sealing ring on the first sealing ring, reducing the wear of the sealing packing and the second sealing ring on the solid material entering the sealing cavity, and extending the service life of the sealing mechanism.

[0017] 4. In this utility model, the storage shell can collect and store leaked solid materials, thus preventing solid materials from leaking directly into the processing environment when the sealing mechanism fails. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the dynamic sealing mechanism for solid materials in a rotating device provided by this utility model; In the diagram: 1-Fixed housing, 2-Rotating housing, 3-Sealing cavity, 4-Equipment flange, 5-First support ring, 6-Sealing panel, 7-First sealing ring, 8-Second sealing ring, 9-Connecting flange, 10-Bolt, 11-Sealing packing, 12-Clamp, 13-First connecting ring, 14-Second connecting ring, 15-Grease injection hole, 16-Fixing ring, 17-Pressure plate, 18-Storage housing, 19-Storage bin. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] In this embodiment, the rotating device includes a fixed housing 1 and a rotating housing 2 connected to each other, and the fixed housing and the rotating housing rotate relative to each other. The gap at the connection between the fixed housing and the rotating housing is a sealing cavity 3. Specifically, both the fixed housing and the rotating housing are provided with equipment flanges 4 at their connecting ends. The fixed housing and the rotating housing are rotatably connected through the equipment flanges, and the sealing cavity is the gap between the two equipment flanges. Figure 1 As shown. The solid material dynamic sealing mechanism of the rotating equipment is installed on the fixed housing and the rotating housing, and seals the sealing cavity to prevent solid material leakage inside the rotating equipment.

[0021] The rotating equipment solid material dynamic sealing mechanism provided in this embodiment includes a first support ring 5, a sealing panel 6, a first sealing ring 7, and a second sealing ring 8, the structure of which is shown in [reference needed]. Figure 1 .

[0022] The first support ring is fixedly sleeved on the outer wall of the rotating shell. Specifically, the first support ring can be fixed to the rotating shell by welding, screw connection or other means, and the first support ring rotates with the rotating shell.

[0023] The sealing panel is ring-shaped and fixed to the outer wall of the fixed housing. One end of the sealing panel extends close to the first support ring. Only the gap between the first support ring and the sealing panel needs to be sealed to prevent solid material from leaking from the gap between the fixed housing and the rotating housing. In this embodiment, a connecting flange 9 is fixed to the inner circular surface of the sealing panel. The connecting flange is fixedly connected to the equipment flange on the fixed housing, ensuring the sealing panel is tightly against the outer wall of the equipment flange. Specifically, the connecting flange is vertically welded to the inner circular surface of the sealing panel, and the connecting flange is placed against the end face of the equipment flange and fixed together with bolts 10, thus ensuring the sealing panel is tightly against the outer wall of the equipment flange.

[0024] The second sealing ring is fitted onto the rotating equipment. One end face of the second sealing ring is pressed against the end face of the first support ring, and the outer circular surface of the second sealing ring is pressed against the inner circular surface of the sealing panel, thereby sealing the gap between the first support ring and the sealing panel. In this embodiment, the second sealing ring provides the first seal, and the first sealing ring provides the second seal. Specifically, the second sealing ring is pressed onto the first support ring and the sealing panel by a pressure plate. Further, the second sealing ring is made of packing.

[0025] The inner circular surface of the first sealing ring has two annular sealing packing grooves, each filled with sealing packing 11. The first sealing ring is fitted onto the outer circular surface of the sealing panel, with its end face abutting and fixed to the end face of the first support ring. A clamp 12 is fitted onto the outer circular surface of the first sealing ring, which holds the first sealing ring tightly against the sealing panel and ensures a tight seal between the sealing packing and the sealing panel. Specifically, the outer circular surface of the first sealing ring has an annular clamp groove, and the clamp is installed within the clamp groove. The number and position of the clamps correspond to the number and position of the sealing packing grooves on the first sealing ring; that is, two clamps are also provided, each clamping the corresponding position of one of the two sealing packings, ensuring a tight seal between the two sealing packings and the sealing panel, thus guaranteeing a reliable seal. Further, the sealing packing is packing.

[0026] In this embodiment, a second support ring is provided between the first support ring and the first sealing ring. The cross-section of the second support ring is "I" shaped, including two first connecting rings 13 that are fixed to the first support ring and the first sealing ring, and a second connecting ring 14 that connects the two first connecting rings. That is, the first support ring and the first sealing ring are fixed together by the second support ring. The second connecting ring is provided with a grease injection hole 15 that communicates with the outside and the sealing cavity. Lubricating grease is injected through the grease injection hole to lubricate the sealing structure.

[0027] In this embodiment, a fixing ring 16 extends from the outer circumference of the first sealing ring near the first support ring. The fixing ring and the first sealing ring are connected as an integral structure. The fixing ring is fixed to the end face of the first support ring by a pressure plate 17 and bolts, thereby fixing the first sealing ring to the first support ring. In this embodiment, a second support ring is provided. Therefore, the fixing ring is fixed to one of the first connecting rings of the second support ring by a pressure plate and bolts, and the first support ring is fixed to the other first connecting ring of the second support ring by bolts, thereby fixing the first sealing ring to the first support ring.

[0028] In this embodiment, a ring-shaped storage shell 18 is fitted onto the rotating device. The end face of the storage shell is fixed to the end face of the first support ring, and both the sealing panel and the first sealing ring are located inside the storage shell. The space between the storage shell, the first sealing ring, and the rotating device is the storage bin 19. Even if the sealing mechanism fails, leaked solid material can be stored in the storage bin, preventing direct leakage. In the figure, the storage shell is fixed to the pressure plate. Since the pressure plate is fixedly connected to the second and first support rings, it is essentially fixed to the first support ring. In actual installation, the outer diameter of the first support ring can be increased to directly fix the storage shell to the first support ring.

Claims

1. A dynamic sealing mechanism for solid materials in a rotating device, the rotating device comprising a fixed housing and a rotating housing connected to each other, the fixed housing and the rotating housing rotating relative to each other, the gap at the connection between the fixed housing and the rotating housing forming a sealing cavity, the dynamic sealing mechanism for solid materials in the rotating device being installed on the fixed housing and the rotating housing and sealing the sealing cavity, characterized in that: The rotating equipment's solid material dynamic sealing mechanism includes: The first support ring is fixedly sleeved on the outer wall of the rotating shell; The sealing panel is generally annular and is fixed to the outer wall of the fixed housing, with one end of the sealing panel extending close to the first support ring; The first sealing ring has at least one annular sealing filler groove on its inner circular surface, and the sealing filler groove is filled with sealing filler. The first sealing ring is sleeved on the outer circular surface of the sealing panel, and the end face of the first sealing ring is abutted and fixed to the end face of the first support ring. A clamp is sleeved on the outer circular surface of the first sealing ring, which clamps the first sealing ring tightly on the sealing panel and makes the sealing filler and the sealing panel in close contact for sealing.

2. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: The rotating equipment solid material dynamic sealing mechanism also includes a second sealing ring, which is sleeved on the rotating equipment. One end face of the second sealing ring is pressed against the end face of the first support ring, and the outer circular surface of the second sealing ring is pressed against the inner circular surface of the sealing panel, thereby sealing the gap between the first support ring and the sealing panel.

3. The dynamic sealing mechanism for solid materials in a rotating device according to claim 2, characterized in that: The second sealing ring is pressed against the first support ring and the sealing panel by a pressure plate.

4. The dynamic sealing mechanism for solid materials in a rotating device according to claim 2, characterized in that: The second sealing ring is made of packing.

5. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: A second support ring is provided between the first support ring and the first sealing ring. The cross-section of the second support ring is "I" shaped, including two first connecting rings that are fixed to the first support ring and the first sealing ring, and a second connecting ring that is connected between the two first connecting rings. The second connecting ring is provided with a grease injection hole that communicates with the outside and the sealing cavity.

6. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: The rotating device is fitted with an integrally annular storage shell, the end face of which is fixed to the end face of the first support ring, and both the sealing panel and the first sealing ring are located inside the storage shell.

7. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: A fixing ring is provided on the outer circumference of the first sealing ring near the first support ring. The fixing ring and the first sealing ring are connected as an integral structure. The fixing ring is fixed to the end face of the first support ring by a pressure plate, so that the first sealing ring is fixed to the first support ring.

8. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: The sealing packing is packing.

9. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: The outer circumference of the first sealing ring is provided with an annular clamping groove, and the clamps are installed in the clamping groove; the number and position of the clamps correspond to the number and position of the sealing filler grooves on the first sealing ring.

10. The dynamic sealing mechanism for solid materials in a rotating device according to claim 1, characterized in that: Both the fixed housing and the rotating housing are equipped with equipment flanges at their connecting ends. The fixed housing and the rotating housing are rotatably connected through the equipment flanges. A connecting flange is fixed to the inner circular surface of the sealing panel. The connecting flange is fixedly connected to the equipment flange on the fixed housing, so that the sealing panel is tightly against the outer wall of the equipment flange.

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