Dynamic seal assembly of slurry pump

Abstract

The utility model discloses a dynamic seal assembly of a slurry pump, which relates to the technical field of slurry pumps and comprises a power shaft, a moving part is sleeved on the outer side of the power shaft, a first convex ring and a second convex ring are fixedly connected on the front side of the surface of the moving part from outside to inside in one step, and a static shell is arranged on the front side of the moving part. A sinking groove is formed in the rear side of the surface of the static shell, a first annular groove and a second annular groove are formed in the inner surface of the sinking groove from outside to inside at a time, a coating sleeve is fixedly connected to the surface of the power shaft, and the surface of the coating sleeve is fixedly sleeved with the moving part; the first convex ring and the second convex ring are matched with the first annular groove and the second annular groove in shape and size respectively, and the first convex ring and the second convex ring are inserted into and meshed with the first annular groove and the second annular groove respectively. Compared with an existing dynamic sealing assembly of a common slurry pump, the dynamic sealing assembly of the slurry pump not only enables the whole dynamic sealing piece to be installed more conveniently, but also ensures the sealing effect of the dynamic sealing piece.

Description

Technical Field

[0001] This utility model relates to the field of slurry pump technology, specifically to a dynamic sealing assembly for a slurry pump. Background Technology

[0002] Dynamic seals refer to the seals between relatively moving parts in machinery or equipment, often referring to the seals between moving and stationary parts. Dynamic seals require both good sealing performance and minimal motion resistance. Therefore, dynamic seals are more complex and difficult to achieve than static seals between two stationary parts.

[0003] The existing dynamic sealing components of slurry pumps use a radially protruding annular part and a radially opened groove for contact sealing at the connection between the stationary and moving parts. This radially nested sealing method is relatively complex to install and difficult to assemble. Furthermore, after installation, since the annular part is set radially, the gap between the annular part and the groove is formed axially. The axially formed gap is the same as the liquid movement trajectory, which may lead to liquid flow and leakage along the same trajectory, affecting the sealing effect.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a dynamic sealing component for a slurry pump. Utility Model Content

[0005] The purpose of this invention is to provide a dynamic sealing assembly for a slurry pump to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dynamic sealing assembly for a slurry pump, comprising a power shaft, a moving component sleeved on the outer side of the power shaft, a first convex ring and a second convex ring fixedly connected from the outside to the inside on the front side of the moving component, a stationary shell provided on the front side of the moving component, a settling groove provided on the rear side of the surface of the stationary shell, and a first annular groove and a second annular groove provided from the outside to the inside on the inner surface of the settling groove.

[0007] Preferably, a cover sleeve is fixedly connected to the surface of the power shaft, and the moving part is fixedly sleeved on the surface of the cover sleeve.

[0008] Preferably, the shape and size of the first convex ring and the second convex ring are respectively matched with the size of the first annular groove and the second annular groove, and the first convex ring and the second convex ring are respectively inserted into and engaged with the inside of the first annular groove and the second annular groove.

[0009] Preferably, the gap between the first and second convex rings is filled with a lubricant, and the lubricant can adhere to the inner wall of the tank after the ring body is connected to the tank body.

[0010] Preferably, the stationary shell is fitted onto the surface of the covering sleeve, and the stationary shell is fixedly connected to the equipment using bolts and corresponding screw holes.

[0011] Preferably, the front side plate of the moving part is inserted into the sink, and the front side plate of the moving part and the rear surface of the stationary shell form a complete plane.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the arrangement of a moving component, a first convex ring, a second convex ring, a stationary shell, a recess, a first annular groove, and a second annular groove, allows the front part of the moving component to be inserted into the recess for installation and positioning during installation. Simultaneously, the first and second convex rings are respectively inserted into the first and second annular grooves, connecting the stationary shell and the moving component, thus completing the assembly. After connection, the first and second convex rings, obstructed by the sidewalls of the first and second annular grooves, form a tortuous, minute gap. The fluid then moves along the axial direction of the power shaft, while the gap is distributed radially and maintains a tortuous distribution. This not only makes the installation of the entire dynamic seal more convenient but also ensures the sealing effect of the dynamic seal. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the static shell removal structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the rear view of the stationary shell structure of this utility model.

[0017] In the figure: 1. Drive shaft; 2. Cover sleeve; 3. Moving part; 4. First convex ring; 5. Second convex ring; 6. Stationary shell; 7. Sinking groove; 8. First annular groove; 9. Second annular groove. Detailed Implementation

[0018] 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.

[0019] like Figures 1-3As shown, a dynamic sealing assembly for a slurry pump includes a power shaft 1, a moving part 3 is sleeved on the outer side of the power shaft 1, a first convex ring 4 and a second convex ring 5 are fixedly connected from the outside to the inside on the front side of the surface of the moving part 3, a stationary shell 6 is provided on the front side of the moving part 3, a groove 7 is provided on the rear side of the surface of the stationary shell 6, and a first annular groove 8 and a second annular groove 9 are provided from the outside to the inside on the inner surface of the groove 7.

[0020] By adopting the above technical solution, the front part of the moving part 3 can be inserted into the recess 7 for installation and positioning. At the same time, the first convex ring 4 and the second convex ring 5 will be inserted into the first ring groove 8 and the second ring groove 9 respectively, so that the stationary shell 6 and the moving part 3 can be connected, thus completing the assembly.

[0021] Furthermore, a cover sleeve 2 is fixedly connected to the surface of the power shaft 1, and the moving part 3 is fixedly sleeved on the surface of the cover sleeve 2.

[0022] By adopting the above technical solution, the power shaft 1 causes the cover sleeve 2 to rotate, so that the cover sleeve 2 can also drive the moving part 3 to rotate, ensuring the motion effect of the moving part.

[0023] Furthermore, the shape and size of the first convex ring 4 and the second convex ring 5 are respectively matched with the size of the first annular groove 8 and the second annular groove 9, and the first convex ring 4 and the second convex ring 5 are respectively inserted into and engaged with the interior of the first annular groove 8 and the second annular groove 9.

[0024] By adopting the above technical solution, the first convex ring 4 and the second convex ring 5 form a tortuous and minute gap under the obstruction of the sidewalls of the first annular groove 8 and the second annular groove 9. The fluid will move along the axial position of the power shaft 1, while the gap is distributed in the radial position and maintains a tortuous distribution, thereby improving the sealing effect.

[0025] Furthermore, the gap between the first convex ring 4 and the second convex ring 5 is filled with a lubricant, and the lubricant can adhere to the inner wall of the tank after the ring body is connected to the tank body.

[0026] By adopting the above technical solution, the lubricant can reduce the wear between the moving part 3 and the stationary shell 6 when rotating.

[0027] Furthermore, the stationary shell 6 is fitted onto the surface of the covering sleeve 2, and the stationary shell 6 is fixedly connected to the equipment using bolts and corresponding screw holes.

[0028] By adopting the above technical solution, the stationary shell 6 is fixed and can be stably sleeved on the front side of the moving part 3, so that the first convex ring 4 and the second convex ring 5 are more tightly inserted into the first ring groove 8 and the second ring groove 9.

[0029] Furthermore, the front plate of the moving part 3 is inserted into the sink 7, and the front plate of the moving part 3 and the rear surface of the stationary shell 6 form a complete plane.

[0030] By adopting the above technical solution, the rear side of the moving part 3 plate and the rear surface of the stationary shell 6 form a plane, making the entire dynamic sealing assembly more neat after installation and assembly.

[0031] Working principle: When using the dynamic sealing assembly of this slurry pump, firstly, during installation, the front part of the moving part 3 can be inserted into the settling groove 7 for installation and positioning. At the same time, the first convex ring 4 and the second convex ring 5 will also be inserted into the first annular groove 8 and the second annular groove 9 respectively, thus connecting the stationary shell 6 to the moving part 3. Then, the stationary shell 6 is fixed with bolts and corresponding screw holes. After connection, the first convex ring 4 and the second convex ring 5 form a tortuous and minute gap under the obstruction of the side walls of the first annular groove 8 and the second annular groove 9. At this time, the fluid will move along the axial position of the power shaft 1, while the gap is distributed in the radial position and maintains a tortuous distribution, thereby improving the radial position sealing performance in the fluid direction. This is the working principle of the dynamic sealing assembly of the slurry pump.

Claims

1. A dynamic sealing assembly for a slurry pump, comprising a drive shaft (1), characterized in that, A moving part (3) is sleeved on the outside of the power shaft (1). A first protruding ring (4) and a second protruding ring (5) are fixedly connected from the outside to the inside on the front side of the surface of the moving part (3). A stationary shell (6) is provided on the front side of the moving part (3). A groove (7) is opened on the rear side of the surface of the stationary shell (6). A first annular groove (8) and a second annular groove (9) are opened from the outside to the inside on the inner surface of the groove (7).

2. The dynamic sealing assembly of a slurry pump according to claim 1, characterized in that, The surface of the power shaft (1) is fixedly connected to a cover sleeve (2), and the moving part (3) is fixedly sleeved on the surface of the cover sleeve (2).

3. The dynamic sealing assembly of a slurry pump according to claim 1, characterized in that, The shape and size of the first convex ring (4) and the second convex ring (5) are respectively matched with the size of the first ring groove (8) and the second ring groove (9), and the first convex ring (4) and the second convex ring (5) are respectively inserted into and engaged with the inside of the first ring groove (8) and the second ring groove (9).

4. The dynamic sealing assembly of a slurry pump according to claim 1, characterized in that, The gap between the first convex ring (4) and the second convex ring (5) is filled with a lubricant, and the lubricant can adhere to the inner wall of the tank after the ring body is connected to the tank body.

5. The dynamic sealing assembly of a slurry pump according to claim 1, characterized in that, The stationary shell (6) is fitted onto the surface of the covering sleeve (2), and the stationary shell (6) is fixedly connected to the equipment using bolts and corresponding screw holes.

6. The dynamic sealing assembly of a slurry pump according to claim 1, characterized in that, The front plate of the moving part (3) is inserted into the sink (7), and the front plate of the moving part (3) and the rear surface of the stationary shell (6) form a complete plane.

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