Corrosion-resistant axial middle-opening double-suction centrifugal pump

Abstract

The utility model discloses a corrosion-resistant type axial middle-opening double-suction centrifugal pump, and relates to the field of centrifugal pumps, the corrosion-resistant type axial middle-opening double-suction centrifugal pump comprises a corrosion-resistant type centrifugal pump body and a pipeline, the corrosion-resistant type centrifugal pump body and the pipeline are provided with a connecting assembly used for conveniently disassembling and assembling the pipeline, and the connecting assembly comprises two connecting pipes fixedly connected to the two output ends of the corrosion-resistant type centrifugal pump body; through cooperative arrangement of structures such as a notch, a fixing rod and an L-shaped block, during use, a pipeline is inserted into a connecting pipe, then a clamping plate is pressed, the fixing rod is inserted into an inserting hole, meanwhile, a first spring is extruded, then the clamping plate is rotated, the two ends of the clamping plate are located below the L-shaped block correspondingly, the clamping plate abuts against the L-shaped block through rebounding of the first spring, and therefore the pipeline is connected to the connecting pipe; during dismounting, the clamping plate is pressed to rotate, the clamping plate is separated from the L-shaped block, and the problem that when dismounting is needed, a tool needs to be carried to rotate the bolt, and convenience is reduced is solved as much as possible.

Description

Technical Field

[0001] This application relates to the field of centrifugal pumps, and in particular to corrosion-resistant axially split double-suction centrifugal pumps. Background Technology

[0002] Double-suction centrifugal pumps are used to transport clean water or other liquids with physical and chemical properties similar to water. Depending on the user's needs, by changing the pump structure and materials, they can be used to transport muddy water or various corrosive liquids. This series of pumps is suitable for factories, mines, urban water supply and drainage, power stations, farmland irrigation and drainage, and various water conservancy projects.

[0003] The utility model patent with announcement number CN210218130U proposes an axial split double-suction centrifugal pump, including a centrifugal pump body. The two output ends of the centrifugal pump body are respectively fixedly connected to connecting flanges. The top and bottom ends of one side of the connecting flange are respectively fixedly installed with fixing blocks. One side of the interior of the two fixing blocks is respectively fixedly connected with a return spring. The other end of the two return springs is respectively fixedly connected with a movable plate. The top and bottom ends of one side of the connecting flange are respectively threaded with bolts. The other end of the two bolts is threaded with a pipe.

[0004] The aforementioned axial split-case double-suction centrifugal pump is connected and fixed to the pump body by rotating bolts. When disassembly is required, tools are needed to rotate the bolts, which reduces convenience. Utility Model Content

[0005] To address the aforementioned issues, this application provides a corrosion-resistant axially split double-suction centrifugal pump.

[0006] The corrosion-resistant axially split double-suction centrifugal pump provided in this application adopts the following technical solution:

[0007] A corrosion-resistant axially split double-suction centrifugal pump includes a corrosion-resistant centrifugal pump body and a pipeline. The corrosion-resistant centrifugal pump body and the pipeline are provided with a connecting assembly for easy assembly and disassembly of the pipeline. The connecting assembly includes two connecting pipes fixedly connected to the two output ends of the corrosion-resistant centrifugal pump body. The side wall of the connecting pipe has multiple annular array slots. A first spring is fixedly connected to each slot. A fixing rod is provided inside the first spring. One end of the fixing rod passes through the slot and is located inside the connecting pipe. The other end of the fixing rod is rotatably connected to a clamping plate. L-shaped blocks are fixedly connected to both sides of the side wall of the connecting pipe at the slots. One end of the pipeline has multiple insertion holes adapted to the fixing rod. The pipeline is inserted into the connecting pipe. A sealing assembly is provided on the connecting pipe.

[0008] By adopting the above technical solution, during use, the pipe is inserted into the connecting pipe, aligning the insertion holes with the fixing rods. Then, by pressing the clamping plate, the fixing rod is moved down and inserted into the insertion hole. Simultaneously, the first spring is squeezed, causing the clamping plate to fit against the connecting pipe. Then, the clamping plate is rotated so that both ends of the clamping plate are below the L-shaped block. The first spring rebounds, pressing the clamping plate against the L-shaped block, thus locking the fixing rod in the insertion hole. This connects the pipe to the corrosion-resistant centrifugal pump body. During disassembly, the clamping plate is pressed down and rotated to detach it from the L-shaped block. This minimizes the need to carry tools to turn the bolts when disassembly is required, thus reducing convenience.

[0009] Preferably, the sealing assembly includes a fixing ring fixedly connected inside the connecting pipe, and an elastic sealing gasket is fixedly connected to the side wall of the fixing ring near the pipe.

[0010] By adopting the above technical solution, when the pipe is inserted into the connecting pipe, one end of the pipe comes into contact with the elastic sealing gasket, and the elastic sealing gasket is squeezed, so that the pipe and the elastic sealing gasket are tightly connected, which can avoid the formation of gaps between the pipe and the connecting pipe and improve the connection sealing performance.

[0011] Preferably, the inner sidewall of the connecting pipe is provided with an annular positioning groove, and one end of the pipe is provided with a plurality of annular array mounting grooves. A second spring is fixedly connected in the mounting groove, and a positioning bead adapted to the annular positioning groove is rotatably connected to the top of the second spring.

[0012] By adopting the above technical solution, when the pipe is inserted into the connecting pipe and the elastic sealing gasket is squeezed, the positioning bead will squeeze the second spring when it comes into contact with the inner wall of the connecting pipe, so that the positioning bead is located in the installation groove. When the positioning bead moves to the annular positioning groove, the second spring rebounds and pushes the positioning bead into the annular positioning groove, which can position the insertion hole. Then, by rotating the pipe, the positioning bead can be rotated in the annular positioning groove, which makes it easy to align the insertion hole with the fixing rod.

[0013] Preferably, the lower surface of the L-shaped block is provided with a limiting groove that is adapted to the card plate above the card plate.

[0014] By adopting the above technical solution, after the card plate is moved under the L-shaped block through the limiting groove, the card plate can be locked into the limiting groove by the rebound of the first spring, which prevents the vibration generated during the operation of the corrosion-resistant centrifugal pump body from causing the card plate to shake and detach from under the L-shaped block.

[0015] Preferably, a U-shaped plate is fixedly connected to the top of the two L-shaped blocks, and a limiting rod is fixedly connected to the upper surface of the plate. The end of the limiting rod away from the plate passes through the U-shaped plate and forms a sliding arrangement.

[0016] By adopting the above technical solution, the U-shaped plate and the limiting rod can prevent the fixing rod from being pulled out of the first spring and falling off when not in use, thus preventing the fixing rod from being lost.

[0017] Preferably, a pressure plate is fixedly connected to the end of the first spring away from the slot. The pressure plate is sleeved on the fixed rod, and the pressure plate is located below the clamping plate and has a plurality of annularly arrayed balls rotatably connected to its upper surface.

[0018] By adopting the above technical solution, when the card plate is pressed down, the card plate presses down on the pressure plate and abuts against the ball bearings, preventing the first spring from abutting against the card plate. When the card plate is rotated, the first spring is twisted, causing the first spring to be damaged.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application utilizes the interlocking structure of slots, fixing rods, and L-shaped blocks. During use, the pipe is inserted into the connecting pipe, aligning the insertion holes with the fixing rods. Then, pressing the retaining plate lowers the fixing rods, inserting them into the insertion holes. Simultaneously, the first spring is compressed, causing the retaining plate to fit against the connecting pipe. The retaining plate is then rotated so that both ends are positioned below the L-shaped block. The first spring's rebound presses the retaining plate against the L-shaped block, locking the fixing rods in the insertion holes, thus connecting the pipe to the corrosion-resistant centrifugal pump body. Disassembly is achieved by pressing down on the retaining plate and rotating it to detach it from the L-shaped block. This minimizes the need for tools to turn bolts during disassembly, reducing convenience.

[0021] 2. When the pipe is inserted into the connecting pipe and the elastic sealing gasket is squeezed, the positioning bead will squeeze the second spring when it comes into contact with the inner wall of the connecting pipe, so that the positioning bead is located in the mounting groove. When the positioning bead moves to the annular positioning groove, the second spring rebounds and pushes the positioning bead into the annular positioning groove, which can position the insertion hole. Then, by rotating the pipe, the positioning bead can be rotated in the annular positioning groove, which makes it easy to align the insertion hole with the fixing rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the corrosion-resistant axial split double-suction centrifugal pump according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram illustrating the main connecting pipe structure in the embodiments of this application;

[0024] Figure 3 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region A in the middle;

[0025] Figure 4 The embodiments of this application mainly embody Figure 2A schematic diagram of the enlarged structure of region B in the middle.

[0026] Reference numerals in the attached drawings: 1. Corrosion-resistant centrifugal pump body; 2. Pipeline; 3. Connecting pipe; 4. Groove; 5. First spring; 6. Fixing rod; 7. Clamping plate; 8. L-shaped block; 9. Insertion hole; 10. Fixing ring; 11. Elastic sealing gasket; 12. Annular positioning groove; 13. Mounting groove; 14. Second spring; 15. Positioning ball; 16. Limiting groove; 17. U-shaped plate; 18. Limiting rod; 19. Pressure plate; 20. Ball bearing. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a corrosion-resistant axial split double-suction centrifugal pump.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A corrosion-resistant axial split double-suction centrifugal pump includes a corrosion-resistant centrifugal pump body 1 and a pipeline 2. The corrosion-resistant centrifugal pump body 1 and the pipeline 2 are provided with a connection assembly for easy disassembly and assembly of the pipeline 2. The connection assembly includes a connecting pipe 3, a slot 4, a first spring 5, a fixing rod 6, a clamping plate 7, an L-shaped block 8, and a socket 9.

[0030] Two connecting pipes 3 are fixedly connected to the two output ends of the corrosion-resistant centrifugal pump body 1. Multiple slots 4 are provided on the side wall of the connecting pipe 3 and arranged in a ring array. Multiple first springs 5 ​​are fixedly connected in the slots 4. Multiple fixing rods 6 are provided inside the first springs 5. One end of the fixing rod 6 passes through the slot 4 and is located inside the connecting pipe 3. The other end of the fixing rod 6 is rotatably connected to the lower surface of the clamping plate 7. Multiple sets of L-shaped blocks 8 are provided, with two in each set. Each set of L-shaped blocks 8 is fixedly connected to the side wall of the connecting pipe 3 and is located on both sides of the slot 4. Multiple insertion holes 9 are provided on one side wall of the pipe 2 and are adapted to the fixing rods 6. The pipe 2 is inserted into the connecting pipe 3. A sealing component is provided on the connecting pipe 3.

[0031] Reference Figure 1 and Figure 3 The sealing assembly includes a fixing ring 10 fixedly connected inside the connecting pipe 3. An elastic sealing gasket 11 is fixedly connected to the side wall of the fixing ring 10 near the pipe 2. When the pipe 2 is inserted into the connecting pipe 3, one end of the pipe 2 abuts against the elastic sealing gasket 11, squeezing the elastic sealing gasket 11 and making the pipe 2 and the elastic sealing gasket 11 tightly connected. This can prevent gaps from forming between the pipe 2 and the connecting pipe 3 and improve the connection sealing performance.

[0032] Reference Figure 1 and Figure 3 The inner side wall of the connecting pipe 3 is provided with an annular positioning groove 12, and the side wall of one end of the pipe 2 is provided with a plurality of annular array mounting grooves 13. A second spring 14 is fixedly connected in the mounting groove 13. The top of the second spring 14 is rotatably connected to a positioning bead 15 that is adapted to the annular positioning groove 12. When the pipe 2 is inserted into the connecting pipe 3 and the elastic sealing gasket 11 is squeezed, the positioning bead 15 will squeeze the second spring 14 when it abuts against the inner wall of the connecting pipe 3, so that the positioning bead 15 is located in the mounting groove 13. When the positioning bead 15 moves to the annular positioning groove 12, the second spring 14 rebounds and pushes the positioning bead 15 into the annular positioning groove 12, which can position the insertion hole 9. Then, by rotating the pipe 2, the positioning bead 15 can rotate in the annular positioning groove 12, which makes it easy to align the insertion hole 9 with the fixing rod 6.

[0033] Reference Figure 3 and Figure 4 The lower surface of the L-shaped block 8 is provided with a limiting groove 16 that is adapted to the clamping plate 7 above the clamping plate 7. After the clamping plate 7 is moved to the lower part of the L-shaped block 8, the first spring 5 rebounds and the clamping plate 7 can be locked into the limiting groove 16. This prevents the clamping plate 7 from shaking and falling off the lower part of the L-shaped block 8 due to the vibration generated when the corrosion-resistant centrifugal pump body 1 is running.

[0034] Reference Figure 1 and Figure 2 Two L-shaped blocks 8 are fixedly connected to the top of a U-shaped plate 17. A limit rod 18 is fixedly connected to the upper surface of the clamping plate 7. The end of the limit rod 18 away from the clamping plate 7 passes through the U-shaped plate 17 and forms a sliding setting. Through the U-shaped plate 17 and the limit rod 18, it can be prevented that the fixing rod 6 will be pulled out from the first spring 5 and fall off when not in use, thus preventing the fixing rod 6 from being lost.

[0035] Reference Figure 4 The end of the first spring 5 away from the slot 4 is fixedly connected to a pressure plate 19. The pressure plate 19 is sleeved on the fixed rod 6. The pressure plate 19 is located below the clamping plate 7 and its upper surface is rotatably connected to multiple annular arrays of balls 20. When the clamping plate 7 is pressed down, the clamping plate 7 presses down on the pressure plate 19 and abuts against the balls 20 to prevent the first spring 5 from abutting against the clamping plate 7. When the clamping plate 7 is rotated, the first spring 5 is twisted, which causes the first spring 5 to be damaged.

[0036] The implementation principle of the corrosion-resistant axial split double-suction centrifugal pump in this embodiment is as follows: During use, the pipe 2 is inserted into the connecting pipe 3, causing the positioning bead 15 to abut against the inner wall of the connecting pipe 3. This compresses the second spring 14, positioning the positioning bead 15 within the mounting groove 13. When the positioning bead 15 moves to the annular positioning groove 12, the second spring 14 rebounds, pushing the positioning bead 15 into the annular positioning groove 12, thus positioning the insertion hole 9. Then, by rotating the pipe 2, the positioning bead 15 rotates within the annular positioning groove 12, aligning the insertion hole 9 with the fixing rod 6. Next, by pressing the retaining plate 7, the fixing rod 6 is lowered and inserted into the insertion hole 9. Simultaneously, the first spring 5 is compressed, causing the retaining plate 7 to fit against the connecting pipe 3. Rotate the clamping plate 7 so that both ends of the clamping plate 7 are located below the L-shaped block 8. The first spring 5 rebounds and presses the clamping plate 7 against the L-shaped block 8, so that the fixing rod 6 is locked in the insertion hole 9. Connect the pipe 2 to the corrosion-resistant centrifugal pump body 1. When disassembling, press down on the clamping plate 7 and rotate it to release the clamping plate 7 from the L-shaped block 8. At the same time, when inserting the pipe 2 into the connecting pipe 3, make one end of the pipe 2 abut against the elastic sealing gasket 11 and squeeze the elastic sealing gasket 11 to make the pipe 2 and the elastic sealing gasket 11 tightly connected. This can avoid gaps between the pipe 2 and the connecting pipe 3, improve the connection sealing performance, and minimize the need to carry tools to turn the bolts when disassembly is required, which would reduce the convenience.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A corrosion-resistant axial split double-suction centrifugal pump, comprising a corrosion-resistant centrifugal pump body (1) and a pipeline (2), wherein the corrosion-resistant centrifugal pump body (1) and the pipeline (2) are provided with connecting components for easy disassembly and assembly of the pipeline (2), characterized in that: The connecting assembly includes two connecting pipes (3) fixedly connected to the two output ends of the corrosion-resistant centrifugal pump body (1). The side wall of the connecting pipe (3) is provided with a plurality of annular array slots (4). A first spring (5) is fixedly connected in the slot (4). A fixing rod (6) is provided in the first spring (5). One end of the fixing rod (6) passes through the slot (4) and is located inside the connecting pipe (3). The other end of the fixing rod (6) is rotatably connected to a clamping plate (7). L-shaped blocks (8) are fixedly connected to both sides of the side wall of the connecting pipe (3) located in the slot (4). A plurality of insertion holes (9) adapted to the fixing rod (6) are opened on the side wall of one end of the pipe (2). The pipe (2) is inserted into the connecting pipe (3). A sealing assembly is provided on the connecting pipe (3).

2. The corrosion-resistant axially split double-suction centrifugal pump according to claim 1, characterized in that: The sealing assembly includes a fixing ring (10) fixedly connected inside the connecting pipe (3), and an elastic sealing gasket (11) is fixedly connected to the side wall of the fixing ring (10) near the pipe (2).

3. The corrosion-resistant axially split double-suction centrifugal pump according to claim 2, characterized in that: The inner sidewall of the connecting pipe (3) is provided with an annular positioning groove (12), and the sidewall of one end of the pipe (2) is provided with a plurality of annular array mounting grooves (13). A second spring (14) is fixedly connected in the mounting groove (13), and a positioning bead (15) that is adapted to the annular positioning groove (12) is rotatably connected to the top of the second spring (14).

4. The corrosion-resistant axially split double-suction centrifugal pump according to claim 3, characterized in that: The lower surface of the L-shaped block (8) is provided with a limiting groove (16) that is adapted to the card plate (7) located above the card plate (7).

5. The corrosion-resistant axially split double-suction centrifugal pump according to claim 4, characterized in that: Two L-shaped blocks (8) are fixedly connected to a U-shaped plate (17) at their top ends. A limiting rod (18) is fixedly connected to the upper surface of the clamping plate (7). The end of the limiting rod (18) away from the clamping plate (7) passes through the U-shaped plate (17) and forms a sliding arrangement.

6. The corrosion-resistant axially split double-suction centrifugal pump according to claim 5, characterized in that: A pressure plate (19) is fixedly connected to the end of the first spring (5) away from the slot (4).

7. The corrosion-resistant axially split double-suction centrifugal pump according to claim 6, characterized in that: The pressure plate (19) is sleeved on the fixed rod (6). The pressure plate (19) is located below the clamping plate (7) and its upper surface is rotatably connected with a plurality of annular arrays of balls (20).

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