Multi-spring mechanical sealing structure

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a multi-spring mechanical sealing structure which comprises a shaft sleeve and a sealing assembly, the sealing assembly comprises a threaded piece, a mounting base, a fixing base, a push plate and a sealing component, the threaded piece is arranged in the shaft sleeve, and the sealing component is inserted into the shaft sleeve to rotate and aligned with a corresponding hole site to slide. When the sealing component slides to the bottom, the sealing component is rotated to be matched with the other set of hole grooves from bottom to top, then the mounting base slides upwards to be in threaded connection with the threaded piece, the bottom of the sealing component is limited through the fixing base, and otherwise, the sealing component is gradually taken out in a sliding mode to be replaced by rotating the mounting base and rotating by a corresponding angle; the problems that in the prior art, the performance of a spring is weakened after being used for a long time, the spring needs to be replaced to restore the performance to guarantee the working quality, but use is affected due to the fact that the spring is nested on a rotating shaft and inconvenient to detach are solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a multi-spring mechanical seal structure. Background Technology

[0002] Mechanical seals are devices that prevent fluid leakage. They consist of at least one pair of end faces perpendicular to the axis of rotation that are kept in contact and slide relative to each other under the action of fluid pressure, the elastic force (or magnetic force) of the compensation mechanism, and the cooperation of auxiliary seals. Existing mechanical seal devices have the characteristics of simple sealing structure and easy manufacturing and installation. However, they have problems such as slight relative movement between the sealing elements, resulting in poor sealing effect, easy leakage, and short service life.

[0003] The existing technology (CN212004264U) discloses a multi-spring single-end mechanical seal structure including a spring locking unit, a push ring, a moving ring, a stationary ring, and a first sealing ring. The spring locking unit includes a spring seat, and the right side wall of the spring seat has grooves evenly provided along the circumferential direction. The springs are all nested in the grooves provided in the right side wall of the spring seat. The push ring is located at the right end of the spring seat. The outer surface of the push ring has a stepped structure. The right side wall of the push ring has a convex ring. The moving ring is located at the right end of the push ring. The left side wall of the moving ring has a circular groove. The convex ring on the right side wall of the push ring is nested in the circular groove on the left side wall of the moving ring. The stationary ring is located at the right end of the moving ring and is fixed to the rotating shaft by a set screw. The springs nested in the right side wall of the spring seat can push the push ring to slide to the right, so that the convex ring on the right side wall of the push ring is nested in the circular groove on the left side wall of the moving ring. The push ring moves to the right to compress and seal the first sealing ring, resulting in a good sealing effect.

[0004] However, the performance of the spring in the above solution weakens after long-term use and needs to be replaced to restore its performance and ensure working quality. However, since the spring is nested on the shaft, it is not easy to disassemble, which affects its use. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-spring mechanical seal structure, which aims to solve the problem that in the existing multi-spring single-end mechanical seal structure, the performance of the spring weakens after long-term use and needs to be replaced to restore performance and ensure working quality. However, the spring is nested on the rotating shaft and is not easy to disassemble, which affects its use.

[0006] To achieve the above objectives, this utility model provides a multi-spring mechanical seal structure, including a bushing and a sealing assembly. The sealing assembly includes a threaded component, a mounting base, a fixed base, a push plate, and a sealing member. The threaded component is fixedly connected to the bushing and located on one side of the bushing. The mounting base is threadedly connected to the threaded component and located on one side of the threaded component. The fixed base is fixedly connected to the mounting base and located on one side of the mounting base. The push spring is fixedly connected to the fixed base and located on one side of the fixed base. The push plate is fixedly connected to the push spring and located on one side of the push spring. The sealing member is disposed on one side of the mounting base.

[0007] The sealing component includes a fixed post, a sliding post, a sealing spring, a sealing part, and a limiting part. The fixed post is fixedly connected to the mounting base and located on one side of the mounting base. The sealing spring is fixedly connected to the fixed post and located on one side of the fixed post. The sliding post is slidably connected to the fixed post and located on one side of the fixed post. One end of the sealing spring is fixedly connected to the fixed post, and the other end is fixedly connected to the sliding post and located on one side of the fixed post. The sealing part is located on one side of the sealing spring, and the limiting part is located on one side of the fixed post.

[0008] The sealing part includes a mounting plate and a sealing element. The mounting plate is fixedly connected to the sliding column and is located on one side of the sliding column. The sealing element is fixedly connected to the mounting plate and is located on one side of the mounting plate.

[0009] The limiting part includes a limiting member and a limiting ring. The limiting member is fixedly connected to the fixed post and is located on one side of the fixed post. The limiting ring is fixedly connected to the bushing and is located on one side of the bushing.

[0010] The sealing assembly further includes a rotating handle, which is fixedly connected to the mounting base and located at the bottom of the mounting base.

[0011] This utility model discloses a multi-spring mechanical seal structure. The bushing has a threaded component inside. The sealing component is inserted into the bushing and rotated, then aligns with the corresponding hole and slides. When sliding to the bottom, the sealing component rotates and engages with another set of holes from bottom to top. Subsequently, the mounting seat slides upward and connects with the threaded component, pushing the push plate upward. During the rotation of the mounting seat, the push spring extends and retracts, bringing the push plate into contact with the bottom of the sealing component. When the mounting seat is rotated and locked, the push spring also retracts and adjusts. The bottom of the sealing component is restricted by the fixing seat. Conversely, by rotating the mounting seat and rotating the corresponding angle, the sealing component can be gradually slid out for replacement. This solution solves the problem in existing multi-spring single-end mechanical seal structures where the spring performance weakens after long-term use, requiring replacement to restore performance and ensure working quality. However, because the spring is nested on the rotating shaft, it is inconvenient to disassemble, affecting its use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a structural schematic diagram of the entire utility model from another perspective.

[0015] Figure 3 This is a cross-sectional view of the entire utility model.

[0016] Figure 4 This is a front view of the entire utility model.

[0017] 101-Shaft sleeve, 102-Sealing assembly, 103-Threaded part, 104-Mounting base, 105-Fixed base, 106-Push plate, 107-Sealing component, 108-Fixed column, 109-Sliding column, 110-Sealing spring, 111-Sealing part, 112-Limiting part, 113-Mounting plate, 114-Sealing component, 115-Limiting component, 116-Limiting ring, 117-Rotating handle, 118-Groove, 119-Push spring. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please seeFigures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a structural schematic diagram of the entire utility model from another perspective. Figure 3 This is a cross-sectional view of the entire utility model. Figure 4 This is a front view of the entire utility model.

[0020] This utility model provides a multi-spring mechanical seal structure including a bushing 101 and a sealing assembly 102. The sealing assembly 102 includes a threaded part 103, a mounting base 104, a fixed base 105, a push plate 106, a sealing member 107, and a rotating handle 117. The sealing member 107 includes a fixed post 108, a sliding post 109, a sealing spring 110, a sealing part 111, and a limiting part 112. The sealing part 111 includes a mounting plate 113 and a sealing member 114. The limiting part 112 includes a limiting member 115 and a limiting ring 116. The aforementioned solution solves the problem that in the existing multi-spring single-end mechanical seal structure, the performance of the spring weakens after long-term use, requiring replacement to restore performance and ensure working quality. However, since the spring is nested on the rotating shaft, it is inconvenient to disassemble, which affects its use.

[0021] In this specific embodiment, the threaded component 103 is fixedly connected to the bushing 101 and located on one side of the bushing 101. The mounting base 104 is threadedly connected to the threaded component 103 and located on one side of the threaded component 103. The fixed base 105 is fixedly connected to the mounting base 104 and located on one side of the mounting base 104. The push spring 119 is fixedly connected to the fixed base 105 and located on one side of the fixed base 105. The push plate 106 is fixedly connected to the push spring 116 and located on one side of the push spring 116. The sealing component 107 is disposed on one side of the mounting base 104. The bushing 101 has the threaded component 103 inside. The sealing component 107 is inserted into the bushing 101 and rotated, then aligns with the corresponding slot 118 and slides. When sliding to the bottom, the sealing component 107 is rotated to engage with another set of slots from bottom to top. Then, the mounting base 104 is moved towards... The push plate 106 is slidably connected to the threaded part 103, pushing the push plate 106 upward. During the rotation of the mounting base 104, the push spring 119 extends and retracts, causing the push plate 106 to partially contact the bottom of the sealing member 107. Subsequently, when the mounting base 104 is rotated and locked, the push spring 119 also retracts and adjusts. The fixed base 105 drives the push plate 106 to restrict the bottom of the sealing member 107. During the restriction process, the spring rebounds to prevent excessive compression from causing deformation, thereby restricting the sealing member 107. Conversely, by rotating the mounting base 104 and rotating the corresponding angle, the sealing member 107 can be gradually slid out and replaced. The above solution solves the problem that in the existing multi-spring single-end mechanical seal structure, the performance of the spring weakens after long-term use and needs to be replaced to restore performance and ensure working quality. However, since the spring is nested on the rotating shaft, it is not easy to disassemble, which affects the use.

[0022] The fixed post 108 is fixedly connected to the mounting base 104 and located on one side of the mounting base 104. The sealing spring 110 is fixedly connected to the fixed post 108 and located on one side of the fixed post 108. The sliding post 109 is slidably connected to the fixed post 108 and located on one side of the fixed post 108. One end of the sealing spring 110 is fixedly connected to the fixed post 108, and the other end is fixedly connected to the sliding post 109 and located on one side of the fixed post 108. The sealing part 111 is disposed on one side of the sealing spring 110, and the limiting part 112 is disposed on one side of the fixed post 108. The limiting part 112 is inserted into the bushing 101 for corresponding rotational alignment. After sliding insertion and installation, the sealing spring 110 pushes the sliding post 109 to slide up and down on the fixed post 108. The sliding of the sliding post 109 will drive the sealing part 111 to support the side for sealing.

[0023] Secondly, the mounting plate 113 is fixedly connected to the sliding column 109 and located on one side of the sliding column 109. The sealing member 114 is fixedly connected to the mounting plate 113 and located on one side of the mounting plate 113. The mounting plate 113 is located at the top of the sliding column 109 and moves synchronously with the lifting and lowering of the sliding column 109. The sealing member 114 is located at the top of the mounting plate 113. The sealing member 114 can be driven to seal by the movement of the mounting plate 113.

[0024] Meanwhile, the limiting member 115 is fixedly connected to the fixing post 108 and located on one side of the fixing post 108. The limiting ring 116 is fixedly connected to the bushing 101 and located on one side of the bushing 101. The side of the fixing post 108 has a limiting member 115. The limiting member 115 can cooperate with the limiting ring 116 inside the bushing 101. The limiting ring 116 has three staggered slots 118. After aligning and sliding into the first slot 118, it needs to be rotated to align and slide with the staggered second slot 118. Then, it needs to be aligned from bottom to top and slide upwards again for a distance. Finally, the fixing seat 105 continues to restrict and prevent the limiting member 115 from moving, thereby achieving the effect of fixing.

[0025] In addition, the rotating handle 117 is fixedly connected to the mounting base 104 and is located at the bottom of the mounting base 104. The rotating handle 117 at the bottom of the mounting base 104 allows for faster and more convenient rotation of the mounting base 104 to continue disassembly or assembly.

[0026] When using this utility model, the bushing 101 has a threaded part 103 inside. The fixing post 108 is inserted into the bushing 101 and rotated. The side of the fixing post 108 has a limiting part 115. The limiting part 115 can cooperate with the limiting ring 116 inside the bushing 101. The limiting ring 116 has three staggered slots 118. After aligning and sliding into the first slot 118, it is necessary to rotate and align with the second staggered slot 118. Then, finally, it is necessary to align from bottom to top and slide upwards a certain distance. Then, the mounting base 104 is slid upward and threadedly connected to the threaded component 103. The bottom of the limiting component 115 is restricted by the fixing base 105. Conversely, the mounting base 104 is rotated, and the sealing component 107 is gradually slid out and replaced by rotating the corresponding angle. In order to improve the sealing performance, multiple components can be spliced ​​together. The above solution solves the problem that in the existing multi-spring single-end mechanical seal structure, the performance of the spring weakens after long-term use and needs to be replaced to restore performance and ensure working quality. However, since the spring is nested on the rotating shaft, it is not easy to disassemble, which affects the use.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A multi-spring mechanical seal structure, comprising a bushing, characterized in that, It also includes sealing components; The sealing assembly includes a threaded component, a mounting base, a fixed base, a push spring, a push plate, and a sealing member; The threaded component is fixedly connected to the bushing and located on one side of the bushing. The mounting base is threadedly connected to the threaded component and located on one side of the threaded component. The fixed base is fixedly connected to the mounting base and located on one side of the mounting base. The push spring is fixedly connected to the fixed base and located on one side of the fixed base. The push plate is fixedly connected to the push spring and located on one side of the push spring. The sealing member is disposed on one side of the mounting base.

2. The multi-spring mechanical seal structure as described in claim 1, characterized in that, The sealing component includes a fixed post, a sliding post, a sealing spring, a sealing part, and a limiting part. The fixed post is fixedly connected to the mounting base and located on one side of the mounting base. The sealing spring is fixedly connected to the fixed post and located on one side of the fixed post. The sliding post is slidably connected to the fixed post and located on one side of the fixed post. One end of the sealing spring is fixedly connected to the fixed post, and the other end is fixedly connected to the sliding post and located on one side of the fixed post. The sealing part is located on one side of the sealing spring, and the limiting part is located on one side of the fixed post.

3. The multi-spring mechanical seal structure as described in claim 2, characterized in that, The sealing part includes a mounting plate and a sealing element. The mounting plate is fixedly connected to the sliding column and is located on one side of the sliding column. The sealing element is fixedly connected to the mounting plate and is located on one side of the mounting plate.

4. The multi-spring mechanical seal structure as described in claim 3, characterized in that, The limiting part includes a limiting member and a limiting ring. The limiting member is fixedly connected to the fixed post and is located on one side of the fixed post. The limiting ring is fixedly connected to the bushing and is located on one side of the bushing.

5. The multi-spring mechanical seal structure as described in claim 4, characterized in that, The sealing assembly also includes a rotating handle, which is fixedly connected to the mounting base and located at the bottom of the mounting base.

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