Vertical centrifugal pump sealing structure

Abstract

The utility model relates to the technical field of vertical centrifugal pump sealing, and discloses a vertical centrifugal pump sealing structure which comprises a pump body, a pipeline and a connecting pipe, flow guide blocks are assembled on the upper side edge and the lower side edge of the inner wall of the pipeline, a waterproof rubber layer is fixed to the side edge of a vertical plate, and a rubber sealing gasket is connected to the side edge of the waterproof rubber layer. The guide blocks are assembled at the upper position and the lower position of the side edge of the extension pipe, so that when the extension pipe is connected into the pipeline, the balls are embedded into the embedding grooves, and when the extension pipe is assembled, the certain smooth guide capacity can be improved in the rolling process of the extension pipe, and meanwhile, the vertical plates are assembled at the upper position and the lower position of the inner wall of the pipeline; the side edge of the vertical plate is connected with the rubber sealing gasket in a bonding mode through the waterproof glue layer, so that when the extension pipe reaches the interior of the pipeline to be connected, the side edge of the extension pipe makes contact with the rubber sealing gasket to form extrusion sealing, and the overall sealing effect is well improved in the working process.

Description

Technical Field

[0001] This utility model relates to the field of vertical centrifugal pump sealing technology, specifically a vertical centrifugal pump sealing structure. Background Technology

[0002] Vertical centrifugal pumps are a type of centrifugal pump. The pump body of a vertical centrifugal pump is installed vertically, and the motor and the pump body are on the same vertical center line. Therefore, vertical centrifugal pumps occupy a small area and are easy to install and maintain. They are often used in occasions that require vertical installation. The flow rate, head, efficiency and power of vertical centrifugal pumps are important factors to consider when selecting and using them.

[0003] Vertical centrifugal pumps are mostly used to transport liquid media. They usually include facilities such as inlet pipes and outlet pipes. When materials enter or exit, external pipelines are usually required. If the sealing effect of the external pipeline is not good, leakage problems can easily occur at the connection point, which can directly affect the conveying effect of the vertical centrifugal pump. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing structure for a vertical centrifugal pump to solve the problem mentioned in the background art that when materials enter and exit, external pipes are mostly required. If the sealing effect is not good when connecting the external pipes, leakage is likely to occur at the connection point, which directly affects the conveying effect of the vertical centrifugal pump.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertical centrifugal pump sealing structure, comprising a pump body, a pipe, and a connecting pipe. Guide blocks are installed on the upper and lower sides of the inner wall of the pipe. An extension pipe is connected to the side of the connecting pipe. Guide blocks are installed at the upper and lower positions of the side of the extension pipe. A groove is formed within the guide block, and a ball bearing is embedded in the groove. A vertical plate is fixed at the upper and lower positions of the inner wall of the pipe. A waterproof adhesive layer is fixed to the side of the vertical plate, and a rubber sealing gasket is connected to the side of the waterproof adhesive layer.

[0006] As a further technical solution of this utility model, the flow guide blocks are symmetrically distributed about the central axis of the pipe, the height of the middle part of the flow guide blocks is greater than the height of the two sides, and the outer wall of the flow guide blocks is coated with a waterproof layer.

[0007] As a further technical solution of this utility model, the vertical plates are symmetrically distributed about the central axis of the pipe, and the rubber sealing gasket and the waterproof adhesive layer form an adhesive connection.

[0008] As a further technical solution of this utility model, the guide blocks are symmetrically distributed about the central axis of the extension tube, and the grooves are evenly distributed within the guide blocks.

[0009] As a further technical solution of this utility model, a second flange ring is assembled on the side of the pipe, a first flange ring is assembled on the side of the connecting pipe, and a connecting bolt is assembled between the first flange ring and the second flange ring.

[0010] As a further technical solution of this utility model, a hollow groove is provided at the middle position of the first flange ring and the second flange ring, and a rubber ring is installed on the side of both the first flange ring and the second flange ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this vertical centrifugal pump sealing structure not only improves the sealing effect, but also improves the connection ability and protection ability of the vertical centrifugal pump sealing structure.

[0012] (1) By assembling the guide block at the upper and lower positions on the side of the extension pipe, when the extension pipe is connected to the pipe, the guide block has a groove and a ball is embedded in it. Therefore, when the extension pipe is assembled, the smooth guiding ability is improved during its rolling process. At the same time, vertical plates are assembled at the upper and lower positions on the inner wall of the pipe. The side of the vertical plate is bonded to the rubber gasket using a waterproof adhesive layer. Therefore, when the extension pipe is connected to the pipe, the side of the extension pipe is made to contact the rubber gasket to form a compression seal, thereby improving the overall sealing effect during the operation.

[0013] (2) By assembling the second flange ring on the side of the pipe and then assembling the first flange ring on the side of the connecting pipe, part of the extension pipe is located inside the pipe. At the same time, when the connecting pipe is connected to the pipe, the first flange ring and the second flange ring are connected by a connecting bolt and a rubber ring is used to form a sealed connection, thereby improving the overall connection capability during operation.

[0014] (3) By installing and fixing the flow guide block on the upper and lower positions of the inner wall of the pipe, and the middle position of the flow guide block is higher than the two sides, the purpose of flow guidance and buffering is achieved. At the same time, a waterproof layer is coated on the outer wall of the flow guide block, so the overall protection capability is better improved during the operation of the medium transportation. Attached Figure Description

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

[0016] Figure 2 This is a side view of the first flange ring structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the guide block of this utility model;

[0018] Figure 4 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle.

[0019] In the diagram: 1. Pump body; 2. Pipeline; 3. Guide block; 4. Extension pipe; 5. Connecting pipe; 6. First flange ring; 7. Second flange ring; 8. Hollow groove; 9. Connecting bolt; 10. Rubber ring; 11. Waterproof layer; 12. Guide block; 13. Groove; 14. Ball bearing; 15. Vertical plate; 16. Rubber sealing gasket; 17. Waterproof adhesive layer. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 An embodiment of this utility model provides a vertical centrifugal pump sealing structure, including a pump body 1, a pipe 2, and a connecting pipe 5. Guide blocks 3 are installed on the upper and lower sides of the inner wall of the pipe 2. An extension pipe 4 is connected to the side of the connecting pipe 5. Guide blocks 12 are installed at the upper and lower positions of the side of the extension pipe 4. A groove 13 is opened in the guide block 12, and a ball bearing 14 is embedded in the groove 13. A vertical plate 15 is fixed at the upper and lower positions of the inner wall of the pipe 2. A waterproof adhesive layer 17 is fixed to the side of the vertical plate 15, and a rubber sealing gasket 16 is connected to the side of the waterproof adhesive layer 17.

[0022] As a further technical solution of this utility model, the flow guide block 3 is symmetrically distributed about the central axis of the pipe 2, the height of the middle part of the flow guide block 3 is greater than the height of the two sides, and the outer wall of the flow guide block 3 is coated with a waterproof layer 11.

[0023] As a further technical solution of this utility model, the vertical plate 15 is symmetrically distributed about the central axis of the pipe 2, and the rubber sealing gasket 16 and the waterproof adhesive layer 17 are bonded together.

[0024] As a further technical solution of this utility model, the guide blocks 12 are symmetrically distributed about the central axis of the extension tube 4, and the grooves 13 are evenly distributed within the guide blocks 12.

[0025] As a further technical solution of this utility model, a second flange ring 7 is assembled on the side of the pipe 2, a first flange ring 6 is assembled on the side of the connecting pipe 5, and a connecting bolt 9 is assembled between the first flange ring 6 and the second flange ring 7.

[0026] As a further technical solution of this utility model, a hollow groove 8 is provided in the middle position of the first flange ring 6 and the second flange ring 7, and a rubber ring 10 is installed on the side of both the first flange ring 6 and the second flange ring 7.

[0027] Furthermore, a portion of the extension pipe 4 is located inside the pipe 2, so the first flange ring 6 is not assembled at the tail end of the connecting pipe 5, but rather at the outer wall of the connecting pipe 5 near the tail end.

[0028] Furthermore, based on the above conditions, the outer diameter of the connecting pipe 5 is compatible with the inner diameter of the hollow groove 8, so the two can be assembled together.

[0029] Working principle: First, during operation, the flow guide block 3 is installed and fixed at the upper and lower positions of the inner wall of the pipe 2, with the middle position of the flow guide block 3 being higher than the two sides, thus serving the purpose of flow guidance and buffering. The waterproof layer 11 is coated on the outer wall of the flow guide block 3, and the first flange ring 6 is assembled on the side of the connecting pipe 5. A part of the extension pipe 4 is located inside the pipe 2. When the extension pipe 4 reaches the inside of the pipe 2 and is ready to be connected, the side of the extension pipe 4 is made to contact the rubber sealing gasket 16 to form a compression seal. The first flange ring 6 and the second flange ring 7 are connected by a connecting bolt 9, and a sealing connection is formed by using a rubber ring 10.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A sealing structure for a vertical centrifugal pump, comprising a pump body (1), a pipeline (2), and a connecting pipe (5), characterized in that: The inner wall of the pipe (2) is equipped with flow guide blocks (3) on the upper and lower sides. The side of the connecting pipe (5) is connected to the extension pipe (4). The upper and lower sides of the extension pipe (4) are equipped with guide blocks (12). The guide blocks (12) have grooves (13) and ball bearings (14) are embedded in the grooves (13). The upper and lower sides of the inner wall of the pipe (2) are fixed with upright plates (15). The side of the upright plates (15) is fixed with a waterproof adhesive layer (17). The side of the waterproof adhesive layer (17) is connected with a rubber sealing gasket (16).

2. The sealing structure of a vertical centrifugal pump according to claim 1, characterized in that: The flow guide blocks (3) are symmetrically distributed about the central axis of the pipe (2). The height of the middle part of the flow guide blocks (3) is greater than the height of the two sides. The outer wall of the flow guide blocks (3) is coated with a waterproof layer (11).

3. The sealing structure of a vertical centrifugal pump according to claim 1, characterized in that: The vertical plate (15) is symmetrically distributed about the central axis of the pipe (2), and the rubber sealing gasket (16) and the waterproof adhesive layer (17) are bonded together.

4. The sealing structure of a vertical centrifugal pump according to claim 1, characterized in that: The guide blocks (12) are symmetrically distributed about the central axis of the extension tube (4), and the grooves (13) are evenly distributed within the guide blocks (12).

5. The sealing structure of a vertical centrifugal pump according to claim 1, characterized in that: The side of the pipe (2) is fitted with a second flange ring (7), the side of the connecting pipe (5) is fitted with a first flange ring (6), and a connecting bolt (9) is fitted between the first flange ring (6) and the second flange ring (7).

6. The sealing structure of a vertical centrifugal pump according to claim 5, characterized in that: A hollow groove (8) is provided in the middle position of the first flange ring (6) and the second flange ring (7), and a rubber ring (10) is installed on the side of both the first flange ring (6) and the second flange ring (7).

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