Mechanical seal bellows type elastic sealing device

Abstract

The utility model provides a kind of mechanical seal bellows type elastic sealing device, it is related to mechanical seal bellows field, including mechanical seal bellows, the both ends of mechanical seal bellows are respectively fixedly connected with transmission shaft ring and installation dynamic ring, the inside fixedly connected with inner sleeve of mechanical seal bellows, the outside rotation of installation dynamic ring is installed with installation static ring, the outside of installation static ring is provided with quick -mounting mechanism.The application is provided with quick-mounting ring, metal reed, control sliding cylinder and reset spring etc., staff can complete the quick disassembly and assembly work of device by pressing control sliding cylinder, control sliding cylinder is extruded metal reed, so that pump shell pipeline can be inserted into sealing element, by canceling extrusion, metal reed can be clamped and fixed to pump shell pipeline, greatly reduce the working strength of staff disassembly and assembly sealing element, provide convenience for regular maintenance sealing element, improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to an elastic sealing device, specifically a mechanical seal bellows type elastic sealing device, belonging to the field of mechanical seal bellows technology. Background Technology

[0002] Mechanical seals are devices that solve the sealing problem between a rotating shaft and a machine body. Bellows-type elastic seals are one specific form of such seals. They consist of a bellows-shaped metal tube, usually made of materials such as stainless steel, and are widely used in various types of pumps and reactors to connect the rotating shaft to the pump casing and reduce the risk of media leakage at the connection point.

[0003] According to patent CN220540319U, a bellows gas sealing device is disclosed, including a valve body. An actuation unit is provided on the top of the valve body. The valve body also includes a first outer shell. A second outer shell is connected to the top of the first outer shell by bolt thread. A flow chamber is opened in the inner cavity of the first outer shell. A valve core is provided in the inner cavity of the flow chamber.

[0004] The above-mentioned solution has wear-resistant and corrosion-resistant properties, which can effectively reduce the number of times the seals need to be replaced. However, during the installation process, it is inconvenient to achieve a quick connection between the seals and the pump casing, which increases the difficulty for staff to regularly inspect the seals. To address this issue, we provide a mechanical seal bellows-type elastic sealing device. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical seal bellows type elastic sealing device to solve the above-mentioned problems, thereby addressing the issues of high installation difficulty and low efficiency when installing the seal onto the pump casing in the prior art.

[0006] This utility model is achieved through the following technical solution: a mechanical seal bellows type elastic sealing device, including a mechanical seal bellows, with a drive shaft ring and a mounting ring fixedly connected to both ends of the mechanical seal bellows, an inner sleeve fixedly connected inside the mechanical seal bellows, a mounting stationary ring rotatably mounted outside the mounting stationary ring, and a quick-release mechanism provided outside the mounting stationary ring, the quick-release mechanism including a quick-release ring fixedly connected to the mounting stationary ring, the quick-release ring having a slot inside, and a metal spring fixedly connected to the inner wall of the slot.

[0007] Preferably, the quick-release ring has a control slide cylinder internally slidably connected, the control slide cylinder being adapted to the metal spring, and the control slide cylinder serving to limit the movement of the metal spring.

[0008] Preferably, a set of return springs is fixedly connected to the outer surface of the control slide, and the end of each return spring away from the control slide is fixedly connected to the quick-release ring. The return springs provide power for the reset and stabilization of the control slide.

[0009] Preferably, a first sealing ring is fixedly installed inside the mounting ring. The first sealing ring is used to seal the gap between the mounting ring and the mounting stationary ring, and the first sealing ring serves to prevent media leakage.

[0010] Preferably, a second sealing ring is fixedly installed inside the mounting stationary ring. The second sealing ring is used to seal the gap between the mounting stationary ring and the quick-release ring, and the second sealing ring is used to enhance the sealing effect of the device.

[0011] Preferably, the transmission shaft ring has a set of internal threaded holes, and each internal threaded hole is threaded with a fastening bolt, which serves to fix the transmission shaft ring and the rotating shaft.

[0012] This utility model provides a mechanical seal bellows type elastic sealing device, which has the following beneficial effects:

[0013] 1. This application incorporates components such as a quick-release ring, metal spring, control slide, and return spring. Workers can quickly disassemble and assemble the device by pressing the control slide. The control slide compresses the metal spring, allowing the pump casing and pipeline to be inserted into the seal. Releasing the compression allows the metal spring to clamp and fix the pump casing and pipeline, greatly reducing the workload of workers disassembling and assembling the seal, facilitating regular maintenance of the seal, and improving maintenance efficiency.

[0014] 2. This application, through the setting of components such as mechanical seal bellows, drive shaft ring, mounting ring and inner sleeve, enables the device to connect the rotating shaft and pump casing, and adapts to the rotation of the shaft and the changes in the mechanical seal interface during the rotation of the rotating shaft. It can effectively reduce the impact of vibration and offset generated during the rotation of the rotating shaft on the pump casing and extend the service life of the pump body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is an exploded view of part of the structure of this utility model;

[0018] Figure 4 This is an exploded view of the quick-assembly mechanism of this utility model.

[0019] [Explanation of Key Component Symbols]

[0020] 1. Mechanical seal bellows; 2. Drive shaft collar; 3. Install the rotating ring; 4. Inner sleeve; 5. Install the stationary ring;

[0021] 6. Quick-release mechanism; 601. Quick-release ring; 602. Empty slot; 603. Metal spring; 604. Control slide; 605. Return spring;

[0022] 7. First sealing ring; 8. Second sealing ring; 9. Internal threaded hole; 10. Fastening bolt. Detailed Implementation

[0023] This utility model provides a mechanically sealed bellows-type elastic sealing device.

[0024] Please see Figure 1 , Figure 2 and Figure 3 The system includes a mechanical seal bellows 1, which is made of stainless steel and other materials. It has a certain degree of elasticity and extensibility. After connecting the rotating shaft to the pump casing, it can rotate together with the rotating shaft and adapt to the rotation of the shaft and the changes in the mechanical seal interface during the rotation. This can effectively reduce the impact of vibration and offset generated during the rotation of the rotating shaft on the pump casing and extend the service life of the pump body. The structural structures of each component shown in the accompanying drawings of this application are all illustrative examples. The specific real-time method should be combined with the functional requirements, assembly conditions and process limitations in the actual application scenario, and the structural parameters, size specifications and connection methods should be adaptively adjusted and optimized.

[0025] The mechanical seal bellows 1 is internally fixedly connected with an inner sleeve 4. The inner sleeve 4 can remain fixed when the mechanical seal bellows 1 expands and contracts, avoiding excessive contact between the liquid flow and the mechanical seal bellows 1, which would cause turbulence. It also prevents sediment in the pipeline from accumulating in the groove of the mechanical seal bellows 1, thus affecting the normal operation of the mechanical seal bellows 1. The medium inflow end of the inner sleeve 4 is welded to the inner wall of the mechanical seal bellows 1, while the outflow end is in a free state, to ensure that the mechanical seal bellows 1 can expand and contract normally and prevent motion interference.

[0026] Please refer to it again. Figure 1 , Figure 2 and Figure 3 The mechanical seal bellows 1 is fixedly connected to a drive shaft ring 2 and a mounting ring 3 at both ends. A mounting stationary ring 5 is rotatably mounted on the outside of the mounting ring 3. When the drive shaft ring 2 drives the mechanical seal bellows 1 to rotate with the rotating shaft, the mounting ring 3 will also rotate. Since the mounting ring 3 and the mounting stationary ring 5 are rotatably connected, the mounting stationary ring 5, which is fixedly connected to the pump casing, will not rotate with the mounting ring 3, thereby avoiding motion interference between the pump casing and the rotating shaft.

[0027] The transmission shaft ring 2 has a set of internal threaded holes 9 inside, and each internal threaded hole 9 is threaded with a fastening bolt 10. Through the setting of the internal threaded holes 9 and the fastening bolts 10, the transmission shaft ring 2 can be fixedly connected to the rotating shaft and the connection between the two can be guaranteed to be stable. This allows the mechanical seal bellows 1 to rotate with the rotation of the rotating shaft, providing a stable connection between the rotating shaft and the pump housing and playing the role of elastic sealing.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The first sealing ring 7 is fixedly installed inside the rotating ring 3. The first sealing ring 7 is used to seal the gap between the rotating ring 3 and the stationary ring 5. The first sealing ring 7 is supported by ceramic sealing material, which has the advantages of high hardness, strong wear resistance and excellent sealing performance. It can prevent the conveyed medium from leaking through the gap between the rotating ring 3 and the stationary ring 5, and improve the sealing performance of the device.

[0029] Please see Figure 1 , Figure 2 and Figure 4 The external installation of the stationary ring 5 is provided with a quick-connect mechanism 6. The quick-connect mechanism 6 includes a quick-connect ring 601 that is fixedly connected to the stationary ring 5. The quick-connect mechanism 6 can realize the quick connection between the device and the pump casing through the setting of the metal spring 603 and the control slide 604, which greatly reduces the workload of the staff in disassembling and assembling the device, provides convenience for the regular maintenance of the seals, and improves the maintenance efficiency.

[0030] The second sealing ring 8 is fixedly installed inside the stationary ring 5. The second sealing ring 8 is used to seal the gap between the stationary ring 5 and the quick-connect ring 601. When the operator inserts the conveying pipeline on the pump casing into the quick-connect ring 601, the metal spring 603 can clamp the pipeline to fix it. The second sealing ring 8 prevents the conveyed medium from leaking through the gap between the stationary ring 5 and the quick-connect ring 601, and ensures the sealing performance between the stationary ring 5 and the pipeline, thus preventing leakage of the conveyed medium and improving the sealing performance of the device.

[0031] The quick-release ring 601 has an internal slot 602, and a metal spring 603 is fixedly connected to the inner wall of the slot 602. The metal spring 603 is made of high-quality carbon steel, alloy steel or stainless steel. It is a part that can store energy and deform when subjected to external force. The metal spring 603 has strong elastic potential energy. When the metal spring 603 is opened by the control slide 604, the delivery pipeline can be inserted into the device. When the control slide 604 is reset, the metal spring 603 will reset under the action of its own elastic potential energy, thereby stably clamping and fixing the delivery pipeline, effectively improving the efficiency and convenience of device installation and disassembly.

[0032] The quick-release ring 601 has a control slide 604 internally connected. The control slide 604 is adapted to the metal spring 603. The end of the control slide 604 has a certain tilt angle. When the end of the control slide 604 is pressed, the other end of the control slide 604 will slide inside the quick-release ring 601. When the tilted surface of the end of the quick-release ring 601 slides into the metal spring 603, its tilted end will fit against the pipeline and insert between the metal spring 603 and the pipeline, thereby opening the metal spring 603. As the control slide 604 is continuously inserted, the metal spring 603 will gradually lose contact with the pipeline, thereby eliminating the clamping and fixing of the delivery pipeline by the metal spring 603, making it convenient to disassemble the device from the pump casing for maintenance.

[0033] A set of return springs 605 are fixedly connected to the outer surface of the control slide 604. The end of each return spring 605 away from the control slide 604 is fixedly connected to the quick-release ring 601. There are a large number of return springs 605, and they all have a certain elastic potential energy, which can play a role in supporting the stability of the control slide 604. This ensures that when the control slide 604 is not subjected to external force, it will not affect the fixed state of the metal spring 603 clamping the delivery pipeline, thus ensuring the installation stability between the quick-release mechanism 6 and the pump casing pipeline.

[0034] Working principle: In use, the operator first inserts the rotating shaft into the transmission shaft ring 2 and fixes the transmission shaft ring 2 to the surface of the rotating shaft with the fastening bolt 10. Then, the pump casing delivery pipeline is inserted into the quick-release ring 601, and the control slide 604 is continuously pressed during insertion. After the pipeline is inserted into the appropriate position, the operator releases the control slide 604. At this time, the control slide 604 will be reset under the elastic potential energy of the return spring 605. After the control slide 604 slides to a certain position, its end bevel will disengage from the metal spring 603. At this time, the metal spring 603 will clamp the delivery pipeline under its own elastic potential energy, thereby completing the installation work between the device and the pump casing. When the operator needs to inspect the seals, they only need to press the control slide 604 again to remove the device from the pump casing, which greatly reduces the difficulty of disassembling and assembling the device and provides convenience for the inspection of the seals.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical seal bellows type elastic sealing device, comprising a mechanical seal bellows (1), characterized in that: The mechanical seal bellows (1) is fixedly connected to a drive shaft ring (2) and a mounting ring (3) at both ends respectively. The mechanical seal bellows (1) is fixedly connected to an inner sleeve (4). The mounting ring (3) is rotatably mounted on the outside of the mounting ring (3). The mounting ring (5) is provided with a quick-installation mechanism (6) on the outside of the mounting ring (5). The quick-release mechanism (6) includes a quick-release ring (601) fixedly connected to the mounting stationary ring (5). The quick-release ring (601) has a slot (602) inside, and a metal spring (603) is fixedly connected to the inner wall of the slot (602).

2. The mechanical seal bellows type elastic sealing device according to claim 1, characterized in that: The quick-release ring (601) is internally slidably connected to a control slide (604), which is adapted to a metal spring (603).

3. The mechanical seal bellows type elastic sealing device according to claim 2, characterized in that: A set of return springs (605) are fixedly connected to the outer surface of the control slide (604), and the end of each return spring (605) away from the control slide (604) is fixedly connected to the quick-release ring (601).

4. The mechanical seal bellows type elastic sealing device according to claim 1, characterized in that: The first sealing ring (7) is fixedly installed inside the mounting ring (3). The first sealing ring (7) is used to seal the gap between the mounting ring (3) and the mounting stationary ring (5).

5. A mechanical seal bellows type elastic sealing device according to claim 1, characterized in that: The mounting stationary ring (5) is internally fixedly installed with a second sealing ring (8), which is used to seal the gap between the mounting stationary ring (5) and the quick-release ring (601).

6. The mechanical seal bellows type elastic sealing device according to claim 1, characterized in that: The transmission shaft ring (2) has a set of internal threaded holes (9) inside, and each internal threaded hole (9) is threaded with a fastening bolt (10).

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