Middle-opening double-suction centrifugal pump

Abstract

The utility model relates to the technical field of centrifugal pumps, and discloses a middle-opening double-suction type centrifugal pump which comprises a centrifugal pump body and further comprises an adjustable base assembly, the adjustable base assembly comprises a lower fixing base and an upper installation base, the lower fixing base is installed on a cement base, the centrifugal pump body is installed on the upper installation base, and the lower fixing base is installed on the upper installation base. The adjusting chamber is located at the top end of the lower fixing base, and the lifting assembly and the rotating assembly are installed in the adjusting chamber and connected with the upper installation base. According to the middle-opening double-suction type centrifugal pump, the position of the centrifugal pump body can be flexibly adjusted through the lifting assembly and the rotating assembly, and therefore the middle-opening double-suction type centrifugal pump can be better connected with paired pipelines. After the lower fixing base is installed on the cement base, the lifting assembly and the rotating assembly which are located in the adjusting chamber are adjusted, so that the position of the centrifugal pump body installed on the upper installing base is adjusted, the height of the centrifugal pump body can be adjusted through the lifting assembly, and the orientation of the centrifugal pump body can be finely adjusted through the rotating assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a split-case double-suction centrifugal pump. Background Art

[0002] A centrifugal pump works by creating centrifugal motion in the water caused by the rotation of the impeller. Before starting the pump, the pump casing and suction pipe must be filled with water. Then, the motor is started, causing the pump shaft to drive the impeller and water into high-speed rotation. This centrifugal motion causes the water to be thrown toward the outer edge of the impeller and flow through the flow channel of the volute pump casing into the pump's pressure water pipeline.

[0003] Chinese patent CN219139141 U discloses a split-case double-suction centrifugal pump, comprising a pump shaft and an impeller mounted on the pump shaft, wherein the pump shaft also includes a positioning ring, the pump shaft includes a positioning platform, the positioning ring is clamped on the pump shaft, one end face of the impeller is in contact with the positioning platform, and the other end face of the impeller is in contact with the positioning ring; the application sets a positioning platform on the pump shaft so that after the impeller is mounted on the pump shaft, one axial end face of the impeller is in contact with the positioning platform, and the application also includes a positioning ring, which can be fixedly clamped on the pump shaft, and the other axial end face of the impeller is in contact with the positioning ring, so that the impeller is positioned between the positioning platform and the positioning ring, realizing the independent positioning function of the impeller on the pump shaft, that is, the impeller is not affected by the axial installation position of the shaft sleeve, and can effectively ensure the assembly centering position of the impeller, the pump body and the pump cover, thereby improving the utilization efficiency of the split-case double-suction centrifugal pump. When installing a centrifugal pump, it is usually rigidly connected to the cement base through the base. This requires that the height design of the cement base strictly comply with the requirements of the design drawings. Otherwise, it is easy for the matching pipes to not be properly connected during on-site installation. Utility Model Content

[0004] In order to improve the above problems, the utility model discloses a split-case double-suction centrifugal pump, including a centrifugal pump body and an adjustable base assembly, the adjustable base assembly including a lower fixed base and an upper mounting seat, the lower fixed base is installed on a cement base, the centrifugal pump body is installed on the upper mounting seat, the adjustment chamber is located at the top of the lower fixed base, the lifting assembly and the rotating assembly are installed in the adjustment chamber and are respectively connected to the upper mounting seat.

[0005] Preferably, the lifting assembly includes:

[0006] A double-ended screw rod, two double-ended screw rods arranged in parallel are rotatably installed in the adjustment chamber, one end of one of the double-ended screw rods is fixedly installed with an adjustment block 1, and the adjustment block 1 is rotatably installed on the inner wall of the adjustment chamber and extends out of the side end of the lower fixed base;

[0007] Screw sleeves: Each double-ended screw rod is provided with two screw sleeves, one of which is provided on the forward-rotating thread, and the other is provided on the reverse-rotating thread;

[0008] The lower circular table is fixedly mounted at the center of the bottom end of the upper mounting seat, and two fan-shaped clamping plates are symmetrically mounted on the edge ends of the lower circular table. Two flip rods are symmetrically mounted on each fan-shaped clamping plate, and the flip rods are rotatably connected to the screw sleeves of each double-headed screw rod away from the fan-shaped clamping plate end;

[0009] Sprockets: each double-ended screw is equipped with a sprocket, and the chain belt is sleeved on the two sprockets.

[0010] Preferably, a central through hole for accommodating the rotating assembly is provided at the central end of the lower truncated table.

[0011] Preferably, the rotating assembly comprises:

[0012] Spline shaft, the spline shaft is rotatably installed at the bottom center of the adjustment chamber;

[0013] Worm gear, the worm gear is mounted on the spline shaft;

[0014] A spline sleeve is mounted on the spline shaft, the spline sleeve passes through a central through hole, and is fixedly connected to the bottom end of the upper mounting seat;

[0015] The worm is connected with the worm wheel, the worm is coaxially installed with the side rotating rod, and the side rotating rod is installed with an adjusting block 2 away from the worm end. The adjusting block 2 is rotatably installed on the inner wall of the adjusting chamber and extends out of the side end of the lower fixed base.

[0016] Preferably, the side rotation rod is located parallel to and between the two double-ended screw rods.

[0017] Preferably, a mounting bracket rotatably connected to the flip rod is reserved on the fan-shaped card plate.

[0018] Preferably, the gap between the lower fixed base and the upper mounting seat is filled with cement.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] This utility model provides a split-case, double-suction centrifugal pump. The position of the centrifugal pump body can be flexibly adjusted through a lifting assembly and a rotating assembly, thereby better achieving connection with the matching pipeline. After the lower fixed base is mounted on the cement base, the lifting assembly and rotating assembly located in the adjustment chamber are adjusted to adjust the position of the centrifugal pump body mounted on the upper mounting base. The lifting assembly can adjust the height of the centrifugal pump body, and the rotating assembly can fine-tune the orientation of the centrifugal pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the installation of the utility model;

[0023] Figure 2 This is a top view of the adjustable base assembly of the utility model;

[0024] Figure 3 for Figure 2 Cross-sectional view at AA;

[0025] Figure 4 for Figure 2 Cross-sectional view at BB;

[0026] Figure 5 This is a top view of the lower fixed base of the utility model;

[0027] Figure 6 This is a bottom view of the upper mounting seat of the present utility model.

[0028] In the figure: 1. Cement base; 10. Centrifugal pump body; 11. Adjustable base assembly; 12. Lower fixed base; 13. Upper mounting seat; 14. Adjustment chamber; 15. Lifting assembly; 16. Rotating assembly; 17. Double-ended screw; 18. Adjustment block 1; 19. Screw sleeve; 20. Flip rod; 21. Sprocket; 22. Chain belt; 23. Fan-shaped clamping plate; 24. Lower round table; 25. Spline shaft; 26. Worm gear; 27. Spline sleeve; 28. Worm; 29. ​​Side swivel rod; 30. Adjustment block 2; 31. Mounting bracket; 32. Center through hole. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] like Figures 1 to 6 As shown, this embodiment provides a split-case double-suction centrifugal pump, comprising a centrifugal pump body 10, and further comprising:

[0033] Adjustable base assembly 11, the adjustable base assembly 11 includes a lower fixed base 12 and an upper mounting base 13, the lower fixed base 12 is installed on the cement base 1, the centrifugal pump body 10 is installed on the upper mounting base 13, the regulating chamber 14 is located at the top of the lower fixed base 12, the lifting assembly 15 and the rotating assembly 16 are installed in the regulating chamber 14 and are respectively connected to the upper mounting base 13.

[0034] The working principle and beneficial effects of the above technical solution are:

[0035] The utility model discloses a split-center double-suction centrifugal pump. After the lower fixed base 12 is mounted on the cement base 1, the lifting assembly 15 and the rotating assembly 16 located in the regulating chamber 14 are adjusted to adjust the position of the centrifugal pump body 10 mounted on the upper mounting base 13. Specifically, the lifting assembly 15 can adjust the height of the centrifugal pump body 10, and the rotating assembly 16 can fine-tune the orientation of the centrifugal pump body 10. The utility model provides a split-center double-suction centrifugal pump. The position of the centrifugal pump body 10 can be flexibly adjusted by the lifting assembly 15 and the rotating assembly 16, thereby better achieving connection with the matching pipeline.

[0036] In one embodiment, the lifting assembly 15 includes:

[0037] Two double-ended screw rods 17 are rotatably mounted in the adjustment chamber 14, and one end of one of the double-ended screw rods 17 is fixedly mounted with an adjustment block 18. The adjustment block 18 is rotatably mounted on the inner wall of the adjustment chamber 14 and extends out of the side end of the lower fixed base 12.

[0038] Screw sleeves 19, each double-ended screw rod 17 is sleeved with two screw sleeves 19, one screw sleeve 19 is sleeved on the forward-rotating thread, and the other screw sleeve 19 is sleeved on the reverse-rotating thread;

[0039] The lower circular platform 24 is fixedly mounted at the bottom center of the upper mounting seat 13. Two sector-shaped clamping plates 23 are symmetrically mounted on the edge ends of the lower circular platform 24. Two flip rods 20 are symmetrically mounted on each sector clamping plate 23. The flip rod 20 is rotatably connected to the screw sleeve 19 of each double-headed screw rod 17 at the end away from the sector clamping plate 23.

[0040] Sprocket 21 , each double-ended screw rod 17 is equipped with a sprocket 21 , and a chain belt 22 is sleeved on the two sprockets 21 .

[0041] The working principle and beneficial effects of the above technical solution are:

[0042] Use a specific tool to rotate the adjustment block 18, thereby driving one of the double-headed screw rods 17 connected to the adjustment block 18 to rotate, and the two double-headed screw rods 17 rotate synchronously with the cooperation of the sprocket 21 and the chain belt 22, thereby driving the two screw sleeves 19 mounted on the double-headed screw rod 17 to move synchronously toward or away from each other. When the two screw sleeves 19 move toward each other, the screw sleeves 19 are lifted through the flip rod 20, the fan-shaped clamping plate 23 connected to the flip rod 20, the lower circular table 24 connected to the fan-shaped clamping plate 23, and the upper mounting seat 13 connected to the lower circular table 24, thereby realizing the height adjustment of the centrifugal pump body 10 installed on the upper mounting seat 13.

[0043] In one embodiment, a central through hole 32 is defined at the center end of the lower truncated platform 24 for accommodating the rotating assembly 16 .

[0044] The beneficial effects of the above technical solution are:

[0045] The central through hole 32 is provided to facilitate the connection of the rotating assembly 16 to the bottom center of the upper mounting seat 13 .

[0046] In one embodiment, the rotating assembly 16 includes:

[0047] The spline shaft 25 is rotatably mounted at the bottom center of the regulating chamber 14;

[0048] The worm gear 26 is mounted on the spline shaft 25;

[0049] The spline sleeve 27 is sleeved on the spline shaft 25, and the spline sleeve 27 passes through a central through hole 32 and is fixedly connected to the bottom end of the upper mounting seat 13;

[0050] The worm 28 is connected to the worm wheel 26, and the worm 28 is coaxially installed with the side rotating rod 29. The side rotating rod 29 is installed with an adjusting block 2 30 at the end away from the worm 28. The adjusting block 2 30 is rotatably installed on the inner wall of the adjusting chamber 14 and extends out of the side end of the lower fixed base 12.

[0051] The working principle and beneficial effects of the above technical solution are:

[0052] The adjusting block 2 30 is rotated by using a specific tool, thereby driving the side rotating rod 29 connected to the adjusting block 2 30 and the worm 28 connected to the side rotating rod 29 to rotate, and the worm 28 drives the worm gear 26 connected thereto to rotate, thereby driving the spline shaft 25 connected to the worm gear 26, the spline sleeve 27 connected to the spline shaft 25, and the upper mounting seat 13 connected to the spline sleeve 27 to rotate on the fan-shaped clamping plate 23, thereby achieving fine adjustment of the orientation of the centrifugal pump body 10 installed on the upper mounting seat 13.

[0053] In one embodiment, the side rotation rod 29 is located parallel to and between the two double-ended screw rods 17 .

[0054] In one embodiment, a mounting bracket 31 rotatably connected to the flip rod 20 is reserved on the sector-shaped clamping plate 23 .

[0055] The beneficial effects of the above technical solution are:

[0056] The installation of the mounting bracket 31 facilitates the rotatable connection between the flip rod 20 and the sector-shaped clamping plate 23 .

[0057] In one embodiment, the gap between the lower fixing base 12 and the upper mounting base 13 is filled with cement.

[0058] The beneficial effects of the above technical solution are:

[0059] After the position adjustment is completed, the gap between the lower fixed base 12 and the upper mounting base 13 may be filled with cement to seal the adjustment chamber 14 .

[0060] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A split-center double-suction centrifugal pump, comprising a centrifugal pump body (10), characterized in that: Also includes: An adjustable base assembly (11) includes a lower fixed base (12) and an upper mounting base (13), wherein the lower fixed base (12) is mounted on a cement base (1), the centrifugal pump body (10) is mounted on the upper mounting base (13), the regulating chamber (14) is located at the top of the lower fixed base (12), and the lifting assembly (15) and the rotating assembly (16) are mounted in the regulating chamber (14) and are respectively connected to the upper mounting base (13).

2. A split case double suction centrifugal pump according to claim 1, characterized in that: The lifting assembly (15) comprises: two double-ended screw rods (17) rotatably mounted in the regulating chamber (14) and arranged in parallel, one end of which is fixedly mounted with an adjusting block (18), and the adjusting block (18) is rotatably mounted on the inner wall of the regulating chamber (14) and extends out of the side end of the lower fixed base (12); each double-ended screw rod (17) is provided with two screw sleeves (19), one of which is provided on the positive thread, and the other screw sleeve (19) is provided on the positive thread. On the counter-rotating thread; the lower truncated cone (24) is fixedly mounted at the bottom center of the upper mounting seat (13), and two fan-shaped card plates (23) are symmetrically mounted on the edge ends of the lower truncated cone (24). Two flip rods (20) are symmetrically mounted on each fan-shaped card plate (23), and the flip rod (20) is rotatably connected to the screw sleeve (19) of each double-headed screw rod (17) at the end away from the fan-shaped card plate (23); a sprocket (21) is mounted on each double-headed screw rod (17), and a chain belt (22) is sleeved on the two sprockets (21).

3. A split case double suction centrifugal pump according to claim 2, characterized in that: A central through hole (32) for circumventing the rotating assembly (16) is provided at the central end of the lower truncated table (24).

4. A split case double-suction centrifugal pump according to claim 3, characterized in that: The rotating assembly (16) includes: a spline shaft (25) rotatably mounted at the center position of the bottom of the regulating chamber (14); a worm wheel (26) mounted on the spline shaft (25); a spline sleeve (27) sleeved on the spline shaft (25), the spline sleeve (27) passing through a center through hole (32) and fixedly connected to the bottom end of the upper mounting seat (13); a worm (28) and the worm wheel (26) are matched and connected, the worm (28) and the side rotating rod (29) are coaxially mounted, and an adjusting block 2 (30) is mounted on the end of the side rotating rod (29) away from the worm (28), and the adjusting block 2 (30) is rotatably mounted on the inner wall of the regulating chamber (14) and extends out of the side end of the lower fixed base (12).

5. A split case double suction centrifugal pump according to claim 4, characterized in that: The side turning rod (29) is located parallel to the two double-ended screw rods (17).

6. A split case double-suction centrifugal pump according to claim 2, characterized in that: A mounting frame (31) is reserved on the fan-shaped card plate (23) and is rotatably connected to the flip rod (20).

7. A split case double suction centrifugal pump according to claim 1, characterized in that: The gap between the lower fixed base (12) and the upper mounting base (13) is filled with cement.

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