High temperature vertical pump

Abstract

The utility model relates to centrifugal pump technical field, especially a kind of high-temperature vertical pump, including motor, pump body and mounting plate, the top circumference of mounting plate is uniformly distributed and fixed with multiple heat insulation columns for connecting motor, bottom is fixed with the pressure relief pipe for sealing connection pump body;Pressure relief pipe is equipped with the rotating shaft of driving pump body;The output end of motor is connected with rotating shaft by coupling, coupling is located above mounting plate;Coupling includes two bolted connecting sleeves, heat insulation pad is equipped between two connecting sleeves, the end face of two described connecting sleeves is away from each other and is equipped with multiple circumferentially distributed guide vanes. Through the guide vane on coupling, the function of fan heat dissipation can be played;Part of heat can be blocked by heat insulation column and transferred to motor;To reduce the temperature when motor operates, ensure that the whole is stable in 150 DEG C high-temperature strong alkali solution environment and operates.

Description

Technical Field

[0001] This utility model relates to the field of vertical pump technology, and in particular to a high-temperature vertical pump. Background Technology

[0002] Currently, semiconductor silicon wafers and mobile phone glass screens require cleaning with strong acids. However, strong acids severely pollute the environment, so high-temperature (150°C) strong alkaline solutions are used for related operations. Currently, these strong acid and alkaline solutions are transported using horizontal magnetic pumps. However, due to the high-temperature environment, horizontal magnetic pumps are prone to damage during use, and they are custom-made products with long lead times and high prices.

[0003] Compared to lower-priced vertical pumps, Chinese utility model patent CN215566696U provides a reinforced acid and alkali resistant vertical pump, including a vertical pump body. A motor is fixedly connected to the top of the pump body, and a mounting plate is provided at the bottom. A fixing box, reinforcing ring, and vertical reinforcing plate are provided on the surface of the pump body. A connecting plate is fixedly connected to the surface of the reinforcing ring, and reinforcing ribs are fixedly connected to the top and bottom of the connecting plate. The outer sides of the reinforcing ribs are fixedly connected to the inner wall of the fixing box. This patent increases the overall strength of the vertical pump body by setting up reinforcing rings, vertical reinforcing plates, and fixing plates. The connecting plate, reinforcing ribs, and fixing box can protect and support the vertical pump body through the reinforcing ring, improving the service life of existing acid and alkali resistant vertical pumps. However, in a strong alkaline solution environment at 150℃, the motor at the top of the vertical pump body is easily damaged due to excessive temperature.

[0004] Therefore, it is urgent to modify existing acid and alkali resistant vertical pumps to stably transport strong alkaline solutions at 150℃. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects and deficiencies in the existing technology. To this end, this utility model provides a high-temperature vertical pump that can insulate and dissipate heat from the motor, ensuring stable overall operation.

[0006] To achieve the above objectives, this utility model provides a high-temperature vertical pump, including a motor, a pump body, and a mounting plate. The top circumference of the mounting plate is uniformly fixed with multiple heat-insulating columns for connecting the motor, and the bottom is fixed with a pressure-isolating pipe for sealing and connecting the pump body. The pressure-isolating pipe contains a rotating shaft that drives the pump body. The output end of the motor is connected to the rotating shaft via a coupling located above the mounting plate. The coupling includes two bolted connecting sleeves, with a heat-insulating pad between the two connecting sleeves. The opposing end faces of the two connecting sleeves each have multiple circumferentially distributed guide plates.

[0007] Furthermore, the heat insulation column includes a support column, and the outer wall of the support column is provided with a plurality of coaxial heat insulation discs evenly distributed along the axial direction.

[0008] Furthermore, a baffle plate is provided above the coupling, and multiple slots are provided on the circumference of the baffle plate, the slots being embedded between two corresponding heat insulation discs.

[0009] Furthermore, a protective mesh cylinder is provided between the motor and the mounting plate, and the protective mesh cylinder is coaxially and slidably sleeved with the outer wall of the heat insulation plate.

[0010] Furthermore, the bottom of the rotating shaft is rotatably fitted with a first sealing ring fixed on the pump housing, and the top is rotatably fitted with a second sealing ring fixed on the mounting plate. The bottom of the pressure diaphragm pipe is provided with an overflow port.

[0011] Furthermore, cylindrical fixing shells are fixed to the top of the pump casing and the bottom of the mounting plate, and the opposite end faces of the two fixing shells are open. The first sealing ring and the second sealing ring are both interference-fitted into the corresponding fixing shells.

[0012] Furthermore, a heat-insulating cone is fixed to the top of the rotating shaft, with the small end of the heat-insulating cone facing upwards; the bottom end of the heat-insulating cone is located above the mounting plate, and the top end overlaps with the plane of the coupling; the outer wall of the heat-insulating cone has multiple annular cavities.

[0013] Furthermore, the pump body includes a pump casing with a liquid outlet on the side wall, and the pump casing is cylindrical; a cover plate is sealed and bolted to the bottom end of the pump casing, and a liquid inlet is provided in the middle of the cover plate; an impeller is coaxially provided inside the pump casing, and the impeller is coaxially fixed to the bottom of the rotating shaft; the pump casing is integrally welded to the pressure diaphragm pipe.

[0014] Furthermore, the outlet of the pump housing is sealed with an outlet pipe, the other end of which passes vertically through the mounting plate; a protective mesh box is fixed at the bottom of the inlet of the cover plate.

[0015] Furthermore, the rotating shaft is provided with a heat insulation cavity, which communicates with the top end of the rotating shaft.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the heat insulation column can prevent heat from being transferred to the motor while supporting the motor installation; the multiple guide plates on the coupling can accelerate the airflow under the motor, which can play a role in heat dissipation of the fan blades, reducing the overall manufacturing cost and the operating temperature of the motor; the heat insulation pad on the coupling can isolate some of the heat; thus, the high-temperature vertical pump provided by this utility model can operate stably in a strong alkaline solution environment at 150℃, extending its overall service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram showing the installation position of the heat insulation column in this utility model; Figure 4 This is a schematic diagram showing the matching position of the heat insulation column and the baffle plate in this utility model; Figure 5 This is a schematic diagram of the structure of the rotating shaft in this utility model; Figure 6 This is a schematic diagram of the coupling structure in this utility model; Figure 7 This is a schematic diagram of the impeller structure in this utility model.

[0018] The components are as follows: 1. Motor; 2. Pump body; 3. Mounting plate; 4. Pressure diaphragm pipe; 5. Discharge pipe; 6. Protective mesh cylinder; 7. Coupling; 11. Insulation column; 12. Support column; 13. Insulation plate; 14. Baffle plate; 15. Slot; 21. Pump casing; 22. Cover plate; 23. Impeller; 24. First sealing ring; 25. Rotating shaft; 26. Insulation cavity; 27. Insulation cone; 28. Protective mesh box; 29. ​​Annular cavity; 31. Second sealing ring; 41. Overflow port; 71. Connecting sleeve; 72. Insulation pad; 73. Guide plate. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example Please see Figures 1 to 7This utility model provides a high-temperature vertical pump, including a motor 1, a pump body 2, and a mounting plate 3. The top circumference of the mounting plate 3 is evenly distributed with multiple heat-insulating columns 11 for connecting the motor 1, and the bottom is fixed with a pressure-isolating pipe 4 for sealing and connecting the pump body 2. The pressure-isolating pipe 4 contains a rotating shaft 25 for driving the pump body 2. The output end of the motor 1 is connected to the rotating shaft 25 through a coupling 7, which is located above the mounting plate 3. The coupling 7 includes two bolted connecting sleeves 71, with a heat-insulating pad 72 between the two connecting sleeves 71. The opposite end faces of the two connecting sleeves 71 are each provided with multiple circumferentially distributed guide plates 73.

[0022] During use, the rotation of the guide plate 73 can accelerate the airflow under the motor 1 and promote the heat dissipation process; secondly, the pressure isolation tube 4 can protect the operation of the rotating shaft 25 and play a certain role in heat insulation; while the heat insulation column 11 can not only support the motor 1, but also isolate some heat from being transferred to the motor 1; thus, the motor 1 can be heat-insulated and dissipated, and is suitable for strong alkaline solution environment at a high temperature of 150℃, and the whole system can operate stably.

[0023] Specifically, the aforementioned heat insulation column 11 includes a support column 12, and the outer wall of the support column 12 is provided with multiple coaxial heat insulation discs 13 evenly distributed along the axial direction to isolate part of the heat, ensure the normal operation of the motor 1, and improve its service life.

[0024] As one embodiment of this utility model, a baffle plate 14 is provided above the coupling 7, and multiple slots 15 are provided on the circumference of the baffle plate 14. The slots 15 are embedded between two corresponding heat insulation plates 13. During use, the space where the coupling 7 is located is a high-temperature zone, and the space between the top of the coupling 7 and the motor 1 is a low-temperature zone. The baffle plate 14 can separate the high-temperature zone and the low-temperature zone, thereby playing a heat insulation role.

[0025] Specifically, a protective mesh cylinder 6 is provided between the motor 1 and the mounting plate 3. The protective mesh cylinder 6 is coaxially and slidably sleeved with the outer wall of the heat insulation plate 13 to protect the output end of the motor 1 and the coupling 7.

[0026] A heat insulation cavity 26 may be provided inside the rotating shaft 25, and the heat insulation cavity 26 communicates with the top end of the rotating shaft 25. The heat insulation cavity 26 serves a heat insulation function, which will not be described in detail here.

[0027] In one embodiment of this utility model, a first sealing ring 24 fixed to the pump housing 21 is rotatably sleeved at the bottom of the rotating shaft 25, and a second sealing ring 31 fixed to the mounting plate 3 is rotatably sleeved at the top. An overflow port 41 is provided at the bottom of the pressure diaphragm pipe 4. The gaps between the first sealing ring 24, the second sealing ring 31 and the rotating shaft 25 are all between 0.5mm and 1.0mm, which can prevent the rotating shaft 25 from wobbling and also prevent the backflow of liquid in the pump body 2.

[0028] Specifically, cylindrical fixed shells are fixed to the top of the pump housing 21 and the bottom of the mounting plate 3. The opposite ends of the two fixed shells are open. The first sealing ring 24 and the second sealing ring 31 are embedded into the corresponding fixed shells by an interference fit to facilitate the installation of the first sealing ring 24 and the second sealing ring 31.

[0029] During use, the liquid level of the strong alkaline solution needs to be higher than the overflow port 41 to isolate the position of the first sealing ring 24 from external pressure and prevent the formation of strong alkaline crystals at the first sealing ring 24, which would corrode the rotating shaft 25.

[0030] As an embodiment of the present invention, a heat-insulating cone 27 is fixedly provided on the top of the rotating shaft 25, with the small end of the heat-insulating cone 27 facing upward; the bottom end of the heat-insulating cone 27 is located above the mounting plate 3, and the top end overlaps with the plane of the coupling 7; the outer wall of the heat-insulating cone 27 is provided with a plurality of annular cavities 29 to prevent heat from being transferred to the motor 1 through the rotating shaft 25.

[0031] As an embodiment of the present invention, the pump body 2 includes a pump casing 21 with a liquid outlet on the side wall, and the pump casing 21 is cylindrical; a cover plate 22 is sealed and bolted to the bottom end of the pump casing 21, and a liquid inlet is provided in the middle of the cover plate 22; an impeller 23 is coaxially provided inside the pump casing 21, and the impeller 23 is coaxially fixed to the bottom of the rotating shaft 25; the pump casing 21 is integrally welded to the pressure diaphragm pipe 4.

[0032] The cylindrical pump casing 21 eliminates the need for the volute flow channel used in existing vertical pumps, reducing the unbalanced effect of liquid pressure inside the casing 21 on the impeller 23 and ensuring that the shaft 25 does not wobble during operation.

[0033] In addition, the outlet of the pump casing 21 can be sealed with an outlet pipe 5, the other end of which passes vertically through the mounting plate 3; a protective mesh box 28 is fixedly installed at the bottom of the inlet of the cover plate 22. Both the protective mesh cylinder 6 and the protective mesh box 28 are made of perforated plate.

[0034] It should be noted that the fixing methods used in this utility model include bolt connection, interference fit and welding, etc., and the specific method is selected according to the production process requirements, which will not be elaborated further.

[0035] This utility model can be summarized in other specific forms that do not depart from the spirit or main features of this utility model. Therefore, in all respects, the above embodiments of this utility model should only be considered as descriptions of this utility model and not as limitations thereof. The claims specify the scope of this utility model, while the above description does not specify the scope of this utility model. Therefore, any changes within the meaning and scope equivalent to the claims of this utility model should be considered as included within the scope of the claims of this utility model.

Claims

1. A high-temperature vertical pump, comprising a motor (1), a pump body (2), and a mounting plate (3), characterized in that, The mounting plate (3) has multiple heat-insulating columns (11) for connecting the motor (1) evenly distributed around its top circumference, and a pressure-isolating pipe (4) for sealing and connecting the pump body (2) is fixed at its bottom. The pressure-isolating pipe (4) contains a rotating shaft (25) for driving the pump body (2). The output end of the motor (1) is connected to the rotating shaft (25) via a coupling (7), which is located above the mounting plate (3). The coupling (7) includes two bolted connecting sleeves (71), with a heat-insulating pad (72) between the two connecting sleeves (71). The opposite ends of the two connecting sleeves (71) are each provided with multiple circumferentially distributed guide plates (73).

2. The high-temperature vertical pump according to claim 1, characterized in that, The heat insulation column (11) includes a support column (12), and the outer wall of the support column (12) is provided with a plurality of coaxial heat insulation discs (13) evenly distributed along the axial direction.

3. The high-temperature vertical pump according to claim 2, characterized in that, A baffle plate (14) is provided above the coupling (7), and a plurality of slots (15) are provided on the circumference of the baffle plate (14), and the slots (15) are embedded between the corresponding two heat insulation plates (13).

4. The high-temperature vertical pump according to claim 3, characterized in that, A protective mesh cylinder (6) is provided between the motor (1) and the mounting plate (3), and the protective mesh cylinder (6) is coaxially and slidably sleeved with the outer wall of the heat insulation plate (13).

5. The high-temperature vertical pump according to claim 1, characterized in that, The bottom of the rotating shaft (25) is fitted with a first sealing ring (24) fixed on the pump housing (21), and the top is fitted with a second sealing ring (31) fixed on the mounting plate (3). The bottom of the pressure diaphragm pipe (4) is provided with an overflow port (41).

6. The high-temperature vertical pump according to claim 5, characterized in that, The top of the pump housing (21) and the bottom of the mounting plate (3) are both fixed with cylindrical fixed shells. The opposite ends of the two fixed shells are open. The first sealing ring (24) and the second sealing ring (31) are both interference-fitted into the corresponding fixed shells.

7. The high-temperature vertical pump according to claim 5, characterized in that, The top of the rotating shaft (25) is fixed with a heat-insulating cone (27), with the small end of the heat-insulating cone (27) facing upward; the bottom end of the heat-insulating cone (27) is located above the mounting plate (3), and the top end overlaps with the plane of the coupling (7); the outer wall of the heat-insulating cone (27) is provided with multiple annular cavities (29).

8. The high-temperature vertical pump according to any one of claims 1 to 7, characterized in that, The pump body (2) includes a pump casing (21) with a liquid outlet on the side wall, and the pump casing (21) is cylindrical; a cover plate (22) is sealed and bolted to the bottom of the pump casing (21), and a liquid inlet is provided in the middle of the cover plate (22); an impeller (23) is coaxially provided inside the pump casing (21), and the impeller (23) is coaxially fixed to the bottom of the rotating shaft (25); the pump casing (21) is integrally welded with the pressure diaphragm pipe (4).

9. The high-temperature vertical pump according to claim 8, characterized in that, The outlet of the pump housing (21) is sealed with an outlet pipe (5), and the other end of the outlet pipe (5) passes vertically through the mounting plate (3); a protective mesh box (28) is fixed at the bottom of the inlet of the cover plate (22).

10. The high-temperature vertical pump according to claim 8, characterized in that, The rotating shaft (25) is provided with a heat insulation cavity (26), which is connected to the top of the rotating shaft (25).

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