Full-split mechanical seal for industrial circulating water

Abstract

The utility model relates to mechanical seal technical field, and disclose a kind of full split formula mechanical seal for industrial circulating water, including sealing flange, dynamic ring seat, static ring seat and elastic component;The side of sealing flange is detachably installed with static ring seat by elastic component, dynamic ring seat is rotatably installed in sealing flange, the inboard of dynamic ring seat is installed with dynamic ring body and circular sealing ring, the inboard of static ring seat is installed with static ring body, and static ring seat is elastically pressed by the elastic component and makes static ring body and dynamic ring body closely cooperate.The utility model proposes a kind of full split formula mechanical seal for industrial circulating water, realizes static ring and dynamic ring wear automatic compensation sealing by elastic component, built-in pressure sensor real-time early warning, limiting portion can be designed to facilitate quickly replacing static ring and spring, without disassembling sealing flange, it is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a fully split mechanical seal for industrial circulating water. Background Technology

[0002] In industrial circulating water conveying systems, mechanical seals, as a type of shaft end sealing device, are widely used in the sealing process of rotating equipment such as pumps and agitators. They are mainly composed of flanges, dynamic ring seats, and static ring seats. The dynamic ring seat is connected to the rotating shaft of the equipment through a shaft tube and rotates synchronously with it. The dynamic ring and static ring are a pair of mating friction components, which are installed in the dynamic ring seat and static ring seat respectively, thereby achieving dynamic sealing in the rotating state.

[0003] In traditional mechanical seal structures, the friction pair consisting of the rotating ring and the stationary ring relies on the initial preload and medium pressure to achieve end face contact. However, under continuous operating conditions, wear on the end faces of the rotating ring and the stationary ring leads to an irreversible increase in the sealing gap. As a result, the sealing surface gap increases and an effective sealing state cannot be rebuilt, thus causing leakage problems. Existing mechanical seals lack structures to enhance the tight connection between the stationary ring and the rotating ring.

[0004] To address the aforementioned issues, this application proposes a fully split mechanical seal for industrial circulating water. Utility Model Content

[0005] Based on the technical problems existing in the background art, this utility model proposes a fully split mechanical seal for industrial circulating water.

[0006] This utility model proposes a fully split mechanical seal for industrial circulating water, including a sealing flange, a dynamic ring seat, a static ring seat, and an elastic component;

[0007] A stationary ring seat is detachably installed on the side of the sealing flange via an elastic component. A rotating ring seat is rotatably installed inside the sealing flange. A rotating ring body and a circular sealing ring are installed on the inner side of the rotating ring seat. A stationary ring body is installed on the inner side of the stationary ring seat. The stationary ring seat is subjected to elastic pressure from the elastic component, which makes the stationary ring body and the rotating ring body fit tightly together.

[0008] Preferably, the elastic component includes a limiting rod, a spring, and a limiting part. The limiting rod is installed on the side of the sealing flange, and the stationary ring seat is slidably sleeved on the limiting rod. The spring is sleeved on the limiting rod, and the limiting part is detachably installed on the limiting rod and applies pressure to the spring to abut against the stationary ring seat, so that the stationary ring seat and the sealing flange are tightly fitted.

[0009] Preferably, the limiting part includes a protective sleeve and a nut. The protective sleeve is sleeved on the limiting rod and the spring, and the nut is threaded onto the limiting rod to apply pressure to the protective sleeve so that the spring is compressed and pressed against the stationary ring seat.

[0010] Preferably, a pressure sensor is installed on the side of the stationary ring seat near the spring, and the spring abuts against the pressure sensor.

[0011] Preferably, a stationary ring sealing ring is fitted between the stationary ring seat and the stationary ring body, and a dynamic ring sealing ring is fitted between the dynamic ring seat and the dynamic ring body.

[0012] Preferably, the sealing flange has a cooling chamber arranged around the moving ring seat, and the bottom side of the sealing flange is connected to an air inlet communicating with the cooling chamber, and the top side is connected to an air outlet communicating with the cooling chamber.

[0013] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0014] 1. In use, connect the rotating equipment's circulating water shaft to the rotating ring seat inside the sealing flange. The rotating ring body and the circular sealing ring inside the rotating ring seat are fitted onto the shaft. Circulating water can enter the shaft through the stationary ring seat. When the shaft rotates, it can drive the rotating ring seat and the rotating ring body and the circular sealing ring inside to rotate simultaneously. When the rotating ring body rotates, it is in close contact with the stationary ring body inside the stationary ring seat. In order to ensure the close contact between the stationary ring body and the rotating ring body, an elastic component is installed on the side of the sealing flange to press against the stationary ring seat. This component applies a force to the stationary ring seat in the direction of the sealing flange. The above design continuously applies axial pressure to the stationary ring seat through the elastic component, so that the stationary ring body and the rotating ring body always remain in close contact during rotation, which can effectively compensate for the gap caused by wear.

[0015] 2. In practical use, the elastic component consists of a limiting rod, a spring, and a limiting part. The limiting rod is installed on the side of the sealing flange, and the stationary ring seat is sleeved on the limiting rod. The spring is sleeved on the limiting rod to press against the stationary ring seat. The limiting part is detachably sleeved on the limiting rod. Applying pressure to the spring causes it to deform, increasing the tightness of the connection between the stationary ring seat and the sealing flange. When wear occurs between the stationary ring body and the moving ring body inside the stationary ring seat, the spring can make the stationary ring body and the moving ring body fit tightly together. In order to detect the deformation of the spring, a pressure sensor is installed between the stationary ring seat and the spring. When the pressure applied by the spring to the pressure sensor changes, it can promptly notify the staff. The spring designed above can automatically compensate for the gap caused by wear between the stationary ring bodies, keep the sealing surfaces in contact, and the pressure sensor can monitor the change of clamping force in real time, providing early warning of wear conditions, facilitating early maintenance, and avoiding sudden leakage.

[0016] 3. When the stationary ring inside the stationary ring seat is severely worn, the limiting part can be removed from the limiting rod, and the spring can be removed from the limiting rod to release the pressure on the stationary ring seat. The stationary ring seat can then be removed from the limiting rod, thus disassembling the stationary ring seat. The above design makes the disassembly and replacement of the spring and the stationary ring seat simple, without the need to disassemble the entire sealing flange. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a fully split mechanical seal for industrial circulating water proposed in this utility model.

[0018] Figure 2 This utility model Figure 1 A magnified view of A in the middle.

[0019] Reference numerals: 1. Sealing flange; 101. Air inlet; 102. Air outlet; 103. Cooling chamber; 2. Moving ring seat; 21. Moving ring body; 22. Circular sealing ring; 23. Moving ring sealing ring; 3. Stationary ring seat; 31. Stationary ring body; 32. Stationary ring sealing ring; 33. Pressure sensor; 4. Elastic component; 41. Limiting rod; 42. Spring; 43. Limiting part; 431. Protective sleeve; 432. Nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0021] like Figure 1 and Figure 2 As shown, the present invention proposes a fully split mechanical seal for industrial circulating water, including a sealing flange 1, a dynamic ring seat 2, a stationary ring seat 3, and an elastic component 4.

[0022] A stationary ring seat 3 is detachably installed on the side of the sealing flange 1 via an elastic component 4. A rotating ring seat 2 is rotatably installed inside the sealing flange 1. A rotating ring body 21 and a circular sealing ring 22 are installed on the inner side of the rotating ring seat 2. A stationary ring body 31 is installed on the inner side of the stationary ring seat 3. The stationary ring seat 3 is subjected to elastic pressure from the elastic component 4, which makes the stationary ring body 31 and the rotating ring body 21 fit tightly together.

[0023] In the process of industrial circulating water transportation, the circulating water shaft of the rotating equipment is first connected to the rotating ring seat 2 inside the sealing flange 1. The rotating ring body 21 and the circular sealing ring 22 inside the rotating ring seat 2 are fitted onto the outside of the shaft. Circulating water can enter the shaft through the stationary ring seat 3. When the equipment is started and the shaft starts to rotate, it will drive the rotating ring seat 2, as well as the rotating ring body 21 and the circular sealing ring 22 inside it to rotate together. At this time, under the elastic pressure of the elastic component 4, the stationary ring seat 3 will drive the stationary ring body 31 inside to always keep it tightly fitted with the rotating rotating ring body 21, forming a dynamic sealing surface in the rotating state. The circular sealing ring 22 can help enhance the sealing between the rotating ring seat 2 and the shaft, preventing circulating water from leaking from the connection gap between the two. The above-mentioned continuous pressure of the elastic component 4 compensates for the wear gap generated by the long-term friction between the rotating ring body 21 and the stationary ring 31, and maintains the effective fit of the sealing surface.

[0024] In a specific embodiment, the elastic component 4 includes a limiting rod 41, a spring 42, and a limiting part 43. The limiting rod 41 is installed on the side of the sealing flange 1, and the stationary ring seat 3 is slidably sleeved on the limiting rod 41. The spring 42 is sleeved on the limiting rod 41, and the limiting part 43 is detachably installed on the limiting rod 41 and applies pressure to the spring 42 to abut against the stationary ring seat 3, so that the stationary ring seat 3 and the sealing flange 1 are tightly fitted.

[0025] In use, the stationary ring seat 3 is fitted onto the limiting rod 41, and the spring 42 is fitted onto the limiting rod 41. The spring 42 abuts against the stationary ring seat 3. The limiting part 43 is detachably installed at the end of the limiting rod 41. By adjusting the limiting part 43, a pre-tightening pressure can be applied to the spring 42, causing the spring 42 to undergo axial compression deformation, thereby transmitting the elastic force to the stationary ring seat 3, pushing the stationary ring seat 3 to move towards the sealing flange 1, and finally allowing the stationary ring body 31 to fit tightly with the moving ring body 21. When the sealing end faces of the moving ring body 21 and the stationary ring body 31 wear, the spring 42 will release elastic potential energy, pushing the stationary ring seat 3 to continue moving forward, compensating for the gap caused by wear, and always maintaining the contact state of the sealing surfaces.

[0026] In a specific embodiment, the limiting part 43 includes a protective sleeve 431 and a nut 432. The protective sleeve 431 is sleeved on the limiting rod 41 and the spring 42. The nut 432 is threaded onto the limiting rod 41 and is used to apply pressure to the protective sleeve 431 so that the spring 42 is compressed and pressed against the stationary ring seat 3.

[0027] In use, the protective sleeve 431 is simultaneously fitted onto the outside of the limiting rod 41 and the spring 42. Then, the nut 432 is threaded onto the limiting rod 41. The operator can adjust its axial position on the limiting rod 41 by rotating the nut 432. When the nut 432 is screwed into the sealing flange 1, it will squeeze the protective sleeve 431, thereby forming axial pressure on the spring 42, causing the spring 42 to undergo compression deformation and transmit the elastic force to the stationary ring seat 3, thereby adjusting the tightness of the fit between the stationary ring body 31 and the moving ring body 21.

[0028] It should be noted that when the stationary ring 31 inside the stationary ring seat 3 is severely worn, the nut 432 can be unscrewed from the limit rod 41, and the spring 42 and the protective sleeve 431 can be removed from the limit rod 41 to release the pressure on the stationary ring seat 3. The stationary ring seat 3 can then be removed from the limit rod 41, thus disassembling the stationary ring seat 3. The above design makes the disassembly and replacement of the spring 42 and the stationary ring seat 3 simple, without the need to completely disassemble the sealing flange 1.

[0029] In a specific embodiment, a pressure sensor 33 is installed on the side of the stationary ring seat 3 near the spring 42, and the spring 42 abuts against the pressure sensor 33, and the pressure sensor 33 is connected to an external control system.

[0030] After the elastic component 4 is installed and the protective sleeve 431 comes into contact with the pressure sensor 33, the pressure sensor 33 will record the initial pressure value at this time. This value corresponds to the initial tightness of the contact between the stationary ring 31 and the moving ring 21. When the sealing end faces of the moving ring 21 and the stationary ring 31 are worn, the spring 42 will undergo elastic deformation due to the gap, and the pressure it applies to the pressure sensor 33 will change accordingly. The pressure sensor 33 can monitor this pressure change in real time and transmit the data to the external control system. When the pressure value drops to the preset threshold, the system will issue a warning signal to the staff, indicating that the wear of the sealing surface has reached the level that requires maintenance.

[0031] In a specific embodiment, a stationary ring sealing ring 32 is fitted between the stationary ring seat 3 and the stationary ring body 31, and a dynamic ring sealing ring 23 is fitted between the dynamic ring seat 2 and the dynamic ring body 21.

[0032] The stationary ring seal 32 is installed at the mating gap between the stationary ring seat 3 and the stationary ring body 31. Under its own elasticity, it fills the connection gap between the two. On the one hand, it can prevent industrial circulating water from leaking from the gap between the stationary ring seat 3 and the stationary ring body 31. On the other hand, it can enhance the tightness of the stationary ring body 31 in the stationary ring seat 3 and prevent the stationary ring body 31 from loosening or shifting. The rotating ring seal 23 is installed at the mating gap between the rotating ring seat 2 and the rotating ring body 21. During the rotation of the rotating ring seat 2 with the shaft tube, the rotating ring seal 23 can tightly fit the contact surface of the rotating ring seat 2 and the rotating ring body 21. It can not only prevent circulating water from leaking from the gap between the two, but also buffer the vibration generated by the rotating friction of the rotating ring body 21, and ensure the rotational coaxiality of the rotating ring body 21.

[0033] In a specific embodiment, a cooling chamber 103 is provided inside the sealing flange 1 and surrounds the moving ring seat 2. An air inlet 101 communicating with the cooling chamber 103 is connected to the bottom side of the sealing flange 1, and an air outlet 102 communicating with the cooling chamber 103 is connected to the top side of the sealing flange 1.

[0034] It should be noted that during the operation of the sealing device, the sealing end faces of the moving ring 21 and the stationary ring 31 will generate a large amount of frictional heat due to high-speed rotation. If the heat accumulates, the temperature of the sealing surface will be too high, which will accelerate the wear and aging of the sealing components and cause sealing failure. The cooling chamber 103 is arranged around the moving ring seat 2. Cooling gas can be introduced into the chamber through the air inlet 101. When the cooling gas flows in the cooling chamber 103, it will exchange heat with the chamber wall of the sealing flange 1, and carry away the frictional heat transferred from the moving ring seat 2. The gas that has completed the heat exchange is discharged through the air outlet 102.

[0035] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model, and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A fully split mechanical seal for industrial circulating water, characterized in that, Includes a sealing flange (1), a dynamic ring seat (2), a static ring seat (3), and an elastic component (4); The side of the sealing flange (1) is detachably mounted with a stationary ring seat (3) via an elastic component (4). A rotating ring seat (2) is rotatably mounted inside the sealing flange (1). A rotating ring body (21) and a circular sealing ring (22) are mounted on the inner side of the rotating ring seat (2). A stationary ring body (31) is mounted on the inner side of the stationary ring seat (3). The stationary ring seat (3) is subjected to elastic pressure from the elastic component (4) to ensure that the stationary ring body (31) and the rotating ring body (21) fit tightly together.

2. The fully split mechanical seal for industrial circulating water according to claim 1, characterized in that, The elastic component (4) includes a limiting rod (41), a spring (42) and a limiting part (43). The limiting rod (41) is installed on the side of the sealing flange (1), and the stationary ring seat (3) is slidably sleeved on the limiting rod (41). The spring (42) is sleeved on the limiting rod (41). The limiting part (43) is detachably installed on the limiting rod (41) and applies pressure to the spring (42) to abut against the stationary ring seat (3), so that the stationary ring seat (3) and the sealing flange (1) are tightly fitted.

3. The fully split mechanical seal for industrial circulating water according to claim 2, characterized in that, The limiting part (43) includes a protective sleeve (431) and a nut (432). The protective sleeve (431) is sleeved on the limiting rod (41) and the spring (42). The nut (432) is threaded onto the limiting rod (41) and is used to apply pressure to the protective sleeve (431) so that the spring (42) is compressed and pressed against the stationary ring seat (3).

4. The fully split mechanical seal for industrial circulating water according to claim 3, characterized in that, A pressure sensor (33) is installed on the side of the stationary ring seat (3) near the spring (42), and the spring (42) abuts against the pressure sensor (33).

5. The fully split mechanical seal for industrial circulating water according to claim 1, characterized in that, A stationary ring seal (32) is fitted between the stationary ring seat (3) and the stationary ring body (31), and a moving ring seal (23) is fitted between the moving ring seat (2) and the moving ring body (21).

6. The fully split mechanical seal for industrial circulating water according to claim 1, characterized in that, The sealing flange (1) has a cooling chamber (103) arranged around the moving ring seat (2). The bottom side of the sealing flange (1) is connected to an air inlet (101) that communicates with the cooling chamber (103), and the top side is connected to an air outlet (102) that communicates with the cooling chamber (103).

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