Magnetic vertical type submerged slurry pump capable of being used for conveying titanium tetrachloride

Abstract

The utility model discloses a magnetic vertical submerged slurry pump for conveying titanium tetrachloride, which comprises a pump body, a support tube, a bearing box, a motor seat and a motor which are sequentially connected from bottom to top, a pump shaft is rotatably mounted in the pump body, the support tube and the bearing box, and an impeller positioned in the pump body is mounted at the lower end of the pump shaft. A pump cover separating the pump body from the supporting pipe is installed at the upper end of the pump body, the middle of the pump shaft rotationally penetrates through a butt joint seam of the supporting pipe and the bearing box through a power sealing assembly, and an inner magnetic rotor located in the motor base is fixedly arranged at the upper end of the pump shaft. An isolation sleeve covering the outer part of the inner magnetic rotor and an outer magnetic rotor covering the peripheral side of the isolation sleeve are arranged in the motor base, the inner magnetic rotor and the outer magnetic rotor are coaxially arranged, and an outer magnetic shaft sleeve at the top of the outer magnetic rotor is fixedly arranged on a motor output shaft of the motor. The floor area is small, the structure is compact, operation is stable, noise is low, and idling can be achieved; excellent lasting full-sealing performance is realized; the device is suitable for conveying corrosive, flammable, explosive and toxic media containing impurity particles.

Description

Technical Field

[0001] This utility model relates to the field of conveying pump technology, specifically to a magnetic vertical submersible slurry pump that can be used to convey titanium tetrachloride. Background Technology

[0002] A pump is a machine that changes the pressure of a fluid within a volume or transports fluid. It is an energy conversion device controlled by a prime mover, driving the movement of the medium and converting the energy output by the prime mover into the pressure energy of the medium. Pumps come in many types and are widely used in various industries. In particular, pipeline pumps used in industries such as petroleum, chemical, metallurgy, power, papermaking, food, and pharmaceuticals for transporting flammable, explosive, highly toxic, and corrosive media require persistent, strong, and leak-free sealing.

[0003] Traditional vertical centrifugal pumps (i.e., submersible pumps) are mainly suitable for conveying fluid media without solid components. However, when used to convey fluid media containing solid components, the solid matter in the fluid can enter the gaps in the bearing assembly, causing abnormal bearing rotation, high noise, and rapid wear. This leads to a sharp decline in the sealing performance of the vertical centrifugal pump, and a significant increase in the frequency of maintenance and replacement of components within the pump body, resulting in a shorter overall service life. Furthermore, due to their poor sealing, traditional vertical centrifugal pumps cannot be used to convey highly reactive materials, such as titanium tetrachloride. Therefore, this invention proposes a magnetically driven vertical submersible slurry pump for conveying titanium tetrachloride, aiming to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It has a small footprint, compact structure, stable operation, low noise, and can run dry. The magnetic drive assembly is installed at the upper end, and the pump body is installed at the lower end. A pump cover is installed at the upper end of the pump body to separate the inner cavity of the pump body from the inner cavity of the support pipe. A dynamic sealing assembly is provided in the middle of the pump shaft. When the impeller located in the inner cavity of the pump body rotates with the pump shaft to convey material, the pump cover acts as the first static seal, allowing the material to pass through the inner cavity of the pump body without flowing into the inner cavity of the support pipe. Simultaneously, the dynamic sealing assembly acts as a second dynamic seal when rotating with the pump shaft, isolating and sealing volatile gases that have escaped into the inner cavity of the support pipe within the support pipe. The design effectively prevents volatile gases from entering the magnetic drive assembly or escaping to the outside of the pump body, eliminating cavitation in the magnetic drive assembly and ensuring excellent, long-lasting, fully sealed performance for the magnetic vertical submersible slurry pump for conveying titanium tetrachloride. Because the magnetic drive assembly is located at the top, when conveying slurry containing solid components, the solid components are isolated from the pump body cavity by the first static seal of the pump cover, preventing them from entering the dynamic sealing assembly. This significantly reduces the maintenance frequency of both the dynamic sealing assembly and the magnetic drive assembly, ensuring that the magnetic vertical submersible slurry pump for conveying titanium tetrachloride is suitable for materials containing solid components and volatile components, with a long service life and high safety and reliability.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a magnetic vertical submersible slurry pump for conveying titanium tetrachloride, comprising a pump body, a support pipe, a bearing housing, a motor base, and a motor connected sequentially from bottom to top. A pump shaft is rotatably mounted inside the pump body, the support pipe, and the bearing housing. An impeller is installed at the lower end of the pump shaft in the inner cavity of the pump body. A pump cover is installed at the upper end of the pump body to separate the inner cavity of the pump body from the inner cavity of the support pipe. The middle part of the pump shaft rotatably passes through the joint between the support pipe and the bearing housing via a dynamic sealing assembly. The upper end of the pump shaft rotatably passes through the top of the bearing housing and is fixedly mounted with an inner magnetic rotor in the inner cavity of the motor base. An isolation sleeve covering the inner magnetic rotor and an outer magnetic rotor covering the outer periphery of the isolation sleeve are also installed in the inner cavity of the motor base. The inner magnetic rotor and the outer magnetic rotor are coaxially arranged. An outer magnetic shaft sleeve fixed above the top of the outer magnetic rotor is sleeved and fixed to the motor output shaft extending into the inner cavity of the motor base.

[0006] This utility model discloses a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It features a small footprint, compact structure, stable operation, low noise, and the ability to run dry. The magnetic drive assembly is installed at the top, and the pump body at the bottom. A pump cover is installed at the top of the pump body to separate the pump body's internal cavity from the support pipe's internal cavity. A dynamic sealing assembly is located in the middle of the pump shaft. When the impeller in the pump body's internal cavity rotates with the pump shaft to convey material, the pump cover provides the first static seal, allowing material to pass through the pump body's internal cavity without flowing into the support pipe's internal cavity. Simultaneously, the dynamic sealing assembly provides the second dynamic seal as it rotates with the pump shaft, isolating and sealing volatile gases that may escape into the support pipe's internal cavity, effectively preventing volatile gases from entering the support pipe. The solid component enters the magnetic drive assembly or escapes to the outside of the pump body, preventing cavitation in the magnetic drive assembly and ensuring excellent, long-lasting, fully sealed performance of the magnetic vertical submersible slurry pump for conveying titanium tetrachloride. Because the magnetic drive assembly is located at the top, when conveying slurry containing solid components, the solid components are isolated from the pump body cavity by the first static seal of the pump cover, preventing them from entering the dynamic sealing assembly. This significantly reduces the maintenance frequency of both the dynamic sealing assembly and the magnetic drive assembly, ensuring that the magnetic vertical submersible slurry pump for conveying titanium tetrachloride is suitable for materials containing solid components and materials containing volatile components, with a long service life and high safety and reliability.

[0007] The preferred technical solution is that, from bottom to top, the pump shaft is fitted with a pressure cover three, a guide vane, a pressure cover two, and a bearing one. The bearing housing has a bearing mounting groove with its opening facing downward at the bottom. The outer periphery of the upper end face of the pressure cover two is provided with an annular protrusion one for abutting against the lower end face of the outer ring of the bearing one. The bearing one is pressed and installed inside the bearing mounting groove by the pressure cover two. The outer periphery of the pressure cover three and the outer periphery of the pressure cover two are fixedly connected to the threaded blind hole opened at the bottom of the bearing housing by screws passing through the corresponding mounting holes on them. The guide vane is sleeved and fixed on the pump shaft, and the guide vane is located inside the annular cavity formed by the mating of the pressure cover three and the pressure cover two. The pressure cover three, the guide vane, the pressure cover two, and the bearing one constitute the dynamic sealing assembly. The dynamic sealing assembly has a clever and reasonable structural design. The guide vane plays a dynamic sealing role as it rotates with the pump shaft, thereby sealing the volatile gas that escapes from the gap between the pump cover and the upper port of the pump body into the support pipe. This ensures that the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, has an excellent sealing effect.

[0008] A further preferred technical solution includes an annular support plate located horizontally on the upper end of the inner wall of the support tube. The pump shaft also has a first bushing located below the guide vane and a second bushing located above the guide vane. The upper end of the second bushing passes through the central hole of the pressure cap and abuts against the lower end face of the inner ring of the first bearing, while its lower end abuts against the upper end face of the inner periphery of the guide vane. The upper end of the first bushing abuts against the lower end face of the inner periphery of the guide vane, while its lower end passes through the central hole of the annular support plate. A bushing cap is also fitted and fixed to the middle of the pump shaft to axially press the first bushing, guide vane, second bushing, and the inner ring of the first bearing together. The middle of the pump shaft is rotatably mounted at the joint between the upper end of the support tube and the bearing housing via the first bushing, guide vane, second bushing, first bearing, and bushing cap. This simple structural design ensures excellent stability during operation of the magnetic vertical submersible slurry pump for conveying titanium tetrachloride.

[0009] A further preferred technical solution includes an annular stepped groove 1 with an opening facing upwards and the inner circumference of the inner wall surface of the central hole of the annular support plate, and an annular stepped groove 2 with an opening facing downwards and the inner circumference of the inner wall surface of the central hole of the pressure cap 2. A sealing ring 1, sleeved on the outer circumference of the pump shaft, is embedded and fixed inside the annular stepped groove 1, and a sealing ring 2, sleeved on the outer circumference of the pump shaft, is embedded and fixed inside the annular stepped groove 2. The sealing ring 1 and sealing ring 2 are located on the upper and lower sides of the guide vane respectively, and both have good wear resistance, which helps to further improve the dynamic sealing effect of the dynamic sealing assembly when it rotates with the pump shaft.

[0010] A further preferred technical solution is that the sealing ring one is pressed and embedded inside the annular stepped groove one by a pressure cap fixed to the upper end of the central hole of the annular support plate, and the lower end of the inner peripheral wall of the annular stepped groove two is provided with an annular groove, and the sealing ring two is pressed and embedded inside the annular stepped groove two by a retaining ring embedded inside the annular groove.

[0011] A further preferred technical solution includes an air injection port on the side wall of the support pipe located below the annular support plate, with a nitrogen pipe connected to the air injection port; an oil injection pipe is installed on the side wall of the bearing housing, and an oil injection hole communicating with the bearing mounting groove is opened at the bottom of the bearing housing. The inner end of the oil injection pipe is connected to the oil injection hole, and the outer end extends to the outside of the bearing housing and is fitted with a sealing cap. When the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, is not in operation, nitrogen gas with a certain pressure can be connected to the nitrogen pipe, thereby filling the internal cavity of the support pipe located below the annular support plate with nitrogen gas at a certain pressure. This effectively prevents volatile gases escaping from the material inside the pump body from entering the power sealing assembly or magnetic drive assembly, ensuring that the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, has a long-lasting sealing performance and helps to extend the service life of the pump.

[0012] A further preferred technical solution includes a pump body with a downward-facing inlet and an outlet facing horizontally. An upward-extending outlet pipe is connected to the outlet. The pump also includes a horizontal support plate. The lower end of the bearing housing, the upper end of the outlet pipe, and the free end of the nitrogen pipe are all inserted and fixed into through holes in the horizontal support plate. The upper surface of the horizontal support plate is further provided with an outlet pipe connector connected to the upper end of the outlet pipe and a nitrogen pipe connector connected to the nitrogen pipe. The inlet is located at the lowest point of this magnetic vertical submersible slurry pump for conveying titanium tetrachloride, facilitating the timely removal of accumulated material within the pump body, ensuring rapid and unobstructed flow within the pump cavity, and helping to reduce the probability of pump blockage.

[0013] A further preferred technical solution includes a bearing housing with an upward-facing opening installed at the center of the top of the bearing housing, which is fitted onto the upper shoulder of the pump shaft. Inside the bearing housing is a second bearing fitted onto the pump shaft. A bearing cap is also fitted onto the upper end of the pump shaft, pressing and limiting the inner ring of the second bearing onto the upper shoulder of the pump shaft. A pressure cover four is also included, with an annular protrusion two on its lower end face. The pressure cover four is embedded in the upper port of the bearing housing through the annular protrusion two. The bearing cap is embedded in the central hole of the pressure cover four. The inner magnetic rotor is fitted onto the upper end of the pump shaft. A gasket is also laid on the inner ring of the upper end face of the inner magnetic rotor. A locking bolt passes through the central hole of the gasket and is screwed into the threaded blind hole on the upper end face of the pump shaft. The inner magnetic rotor is fixedly connected to the upper end of the pump shaft through the gasket and the locking bolt. The magnetic drive assembly structure is ingeniously and reasonably designed, ensuring the successful preparation and implementation of this utility model for a magnetic vertical submersible slurry pump for conveying titanium tetrachloride.

[0014] A further preferred technical solution includes: the lower end of the bearing housing is provided with a second flange plate extending outwards and a plug-in section located below the second flange plate; the upper end of the liquid outlet pipe is provided with a second flange plate extending outwards and a plug-in section located above the second flange plate; the lower end of the liquid outlet pipe head is provided with a second flange plate extending outwards and a plug-in section located below the second flange plate; the upper end of the nitrogen pipe is provided with a second flange plate extending outwards and a plug-in section located above the second flange plate; the lower end of the nitrogen pipe head is provided with a second flange plate extending outwards and a plug-in section located below the second flange plate. The lower end of the bearing housing, the upper end of the liquid outlet pipe, the lower end of the liquid outlet connector, the upper end of the nitrogen pipe, and the lower end of the nitrogen connector are respectively inserted into the through holes of the horizontal support plate through corresponding plug sections. The lower end of the bearing housing, the upper end of the liquid outlet pipe, the lower end of the liquid outlet connector, the upper end of the nitrogen pipe, and the lower end of the nitrogen connector are also fixedly connected to the horizontal support plate through bolt assemblies passing through corresponding mounting holes on the flange plate and the horizontal support plate. Furthermore, the upper end of the liquid outlet pipe and the lower end of the liquid outlet connector are located on the upper and lower sides of the same through hole on the horizontal support plate, and the free end of the nitrogen pipe and the lower end of the nitrogen connector are also located on the upper and lower sides of the same through hole on the horizontal support plate. When this utility model is used in a magnetic vertical submersible slurry pump for conveying titanium tetrachloride, installed inside a tank or other container, the horizontal support plate acts as a sealing cover, ensuring the convenience of placement and use of the submersible slurry pump, as well as its ease of movement and high efficiency.

[0015] A further preferred technical solution is that the upper end of the support tube is provided with a flange plate extending outward, and the lower end face of the lower end insertion section of the bearing housing is provided with a number of threaded blind holes spaced circumferentially. The upper end of the support tube and the lower end of the bearing housing are fixedly connected together by screws that pass through the mounting holes on the flange plate and the corresponding threaded blind holes on the lower end face of the insertion section.

[0016] The lower end of the isolation sleeve is provided with a flange plate extending outward to the periphery. The outer periphery of the upper surface of the bearing housing is provided with a number of threaded blind holes spaced apart in a circumferential manner. It also includes a pressure ring coaxially pressed onto the upper surface of the flange plate on the isolation sleeve. The outer periphery of the pressure ring is provided with a number of mounting holes spaced apart in a circumferential manner. The pressure ring is fixedly connected to the threaded blind holes on the top of the bearing housing by screws passing through the mounting holes.

[0017] Sealing rings are installed on the following seams: the upper end face of the flange plate at the upper end of the support pipe and the lower end face of the insertion section at the lower end of the bearing housing; the lower end face of the insertion section at the lower end of the bearing housing and the upper end face of the pressure cap; the lower end face of the pressure cap and the upper end face of the pressure cap; the lower end face of the flange plate at the lower end of the bearing housing and the upper end face of the horizontal support plate; the lower end face of the flange plate and the outer periphery of the top upper end face of the bearing housing; and the seam between the upper end face of the insertion section on the outlet pipe and the lower end face of the insertion section on the outlet pipe head. Sealing rings are installed at the seams of each component, thereby further improving the sealing performance of the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride.

[0018] The advantages and beneficial effects of this utility model are as follows:

[0019] 1. This utility model discloses a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It has a small footprint, compact structure, stable operation, low noise, and can run dry. The magnetic drive assembly is installed at the upper end, and the pump body is installed at the lower end. A pump cover is installed at the upper end of the pump body to separate the inner cavity of the pump body from the inner cavity of the support pipe. A dynamic sealing assembly is located in the middle of the pump shaft. When the impeller in the inner cavity of the pump body rotates with the pump shaft to convey material, the pump cover acts as the first static seal, allowing the material to pass through the inner cavity of the pump body without flowing into the inner cavity of the support pipe. Simultaneously, the dynamic sealing assembly acts as a second dynamic seal when rotating with the pump shaft, isolating and sealing volatile gases that have escaped into the inner cavity of the support pipe, effectively preventing volatile gases from entering the inner cavity of the support pipe. Gas enters the magnetic drive assembly or escapes to the outside of the pump body through the venting channel, preventing cavitation of the magnetic drive assembly and ensuring that the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, has excellent and long-lasting fully sealed performance. Since the magnetic drive assembly is located at the top, when transporting slurry containing solid components, the solid components are isolated in the pump body cavity by the first static seal of the pump cover, so that the solid components will not enter the dynamic sealing assembly. This greatly reduces the maintenance frequency of the dynamic sealing assembly and the magnetic drive assembly, ensuring that the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, is also suitable for materials containing solid components and materials containing volatile components, with a long service life and good safety and reliability.

[0020] 2. The dynamic sealing component has a clever and reasonable structural design. The guide vane plays a dynamic sealing role during the rotation of the pump shaft, thereby sealing the volatile gas that escapes into the support pipe from the gap between the pump cover and the upper port of the pump body. This ensures that the magnetic vertical submersible slurry pump of this utility model, which can be used to transport titanium tetrachloride, has an excellent sealing effect.

[0021] 3. The pump shaft is rotatably mounted at the joint between the upper end of the support pipe and the bearing box via shaft sleeve one, guide vane two, bearing one and shaft sleeve cap. The simple structural design ensures that the magnetic vertical submersible slurry pump of this utility model, which can be used to transport titanium tetrachloride, has excellent stability during operation.

[0022] 4. Sealing ring one and sealing ring two are located on the upper and lower sides of the guide vane respectively, and both have good wear resistance, which helps to further improve the dynamic sealing effect of the dynamic sealing assembly when it rotates with the pump shaft.

[0023] 5. When the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, is not in operation, nitrogen gas with a certain pressure can be connected to the nitrogen pipe. This will fill the internal cavity of the support pipe located on the lower side of the annular support plate with nitrogen gas at a certain pressure, thereby effectively preventing volatile gases from escaping from the material inside the pump body from entering the power sealing assembly or the magnetic drive assembly. This ensures that the magnetic vertical submersible slurry pump of this invention, which can be used to transport titanium tetrachloride, has a long-lasting sealing performance and helps to extend the service life of the pump.

[0024] 6. The inlet is located at the lowest position of the magnetic vertical submersible slurry pump that can be used to transport titanium tetrachloride, which facilitates the timely removal of materials accumulated in the pump body, ensures rapid unobstructed flow in the pump body cavity, and helps reduce the probability of material blockage in the pump body. Attached Figure Description

[0025] Figure 1 This is a front view of a magnetic vertical submersible slurry pump that can be used to transport titanium tetrachloride according to this utility model.

[0026] Figure 2 This is a longitudinal sectional view of a magnetic vertical submersible slurry pump that can be used to transport titanium tetrachloride according to this utility model.

[0027] Figure 3 yes Figure 2 A magnified view of a section at point S in the middle;

[0028] Figure 4 yes Figure 2 A magnified view of the middle T section;

[0029] Figure 5 yes Figure 2 A magnified view of the area at point W in the middle;

[0030] Figure 6 yes Figure 2 A magnified view of the area at point Z in the middle.

[0031] In the diagram: 1. Pump body; 2. Support pipe; 3. Bearing housing; 4. Motor base; 5. Motor; 6. Discharge pipe; 7. Horizontal support plate; 8. Discharge pipe connector; 9. Pump shaft; 10. Impeller; 11. Pump cover; 12. Shaft sleeve one; 13. Sealing ring one; 14. Pressure gland one; 15. Bearing one; 16. Sealing ring two; 17. Snap ring; 18. Shaft sleeve two; 19. Pressure gland two; 20. Guide vane; 21. Pressure gland three; 22. Oil injection pipe; 23. Bearing housing; 24. Bearing two; 25. Bearing cap; 26. Pressure gland four; 27. Internal magnetic rotor; 28. Isolation. 29. Fitting ring; 30. External magnetic rotor; 31. Gasket; 32. Locking bolt; 33. Nitrogen pipe; 34. Nitrogen pipe connector; 1-1. Liquid inlet; 1-2. Liquid outlet; 2-1. Annular support plate; 2-2. Annular stepped groove one; 3-1. Bearing mounting groove; 5-1. Motor output shaft; 12-1. Shaft sleeve cap; 19-1. Annular convex flange one; 19-2. Annular stepped groove two; 22-1. Sealing cap; 28-1. Flanged plate; 30-1. External magnetic shaft sleeve; a. Flange plate one; b. Flange plate two; c. Sealing ring; d. Insertion section. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0033] Example

[0034] like Figures 1-6 As shown, this utility model is a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It includes a pump body 1, a support pipe 2, a bearing housing 3, a motor base 4, and a motor 5 connected sequentially from bottom to top. A pump shaft 9 is rotatably mounted inside the pump body 1, support pipe 2, and bearing housing 3. An impeller 10 is installed at the lower end of the pump shaft 9, located within the inner cavity of the pump body 1. A pump cover 11 is installed at the upper end of the pump body 1, separating the inner cavity of the pump body 1 from the inner cavity of the support pipe 2. The middle portion of the pump shaft 9 rotatably passes through the support pipe 2 and the bearing housing via a dynamic sealing assembly. At the joint of 3, the upper end of the pump shaft 9 rotates through the top of the bearing housing 3 and is fixedly installed with an inner magnetic rotor 27 located in the inner cavity of the motor base 4. The inner cavity of the motor base 4 is also equipped with an isolation sleeve 28 covering the inner magnetic rotor 27 and an outer magnetic rotor 30 covering the outer periphery of the isolation sleeve 28. The inner magnetic rotor 27 and the outer magnetic rotor 30 are coaxially arranged. The outer magnetic bushing 30-1 fixed above the top of the outer magnetic rotor 30 is sleeved and fixed on the motor output shaft 5-1 of the motor 5 extending into the inner cavity of the motor base 4.

[0035] Preferably, the pump shaft 9 is fitted with a pressure cover 21, a guide vane 20, a pressure cover 19, and a bearing 15 sequentially from bottom to top in the middle. The bearing housing 3 has a bearing mounting groove 3-1 with the opening facing downward at the bottom. The outer periphery of the upper end face of the pressure cover 19 is provided with an annular protrusion 19-1 for abutting against the lower end face of the outer ring of the bearing 15. The bearing 15 is pressed and installed inside the bearing mounting groove 3-1 by the pressure cover 19. The outer periphery of the pressure cover 21 and the outer periphery of the pressure cover 19 are fixedly connected to the threaded blind hole at the bottom of the bearing housing 3 by screws passing through the corresponding mounting holes on them. The guide vane 20 is fitted and fixed on the pump shaft 9, and the guide vane 20 is located inside the annular cavity formed by the mating of the pressure cover 21 and the pressure cover 19. The pressure cover 21, the guide vane 20, the pressure cover 19, and the bearing 15 constitute the power sealing assembly.

[0036] More preferably, the upper end of the inner wall of the support tube 2 is provided with an annular support plate 2-1 in the horizontal direction. The pump shaft 9 is also sleeved with a bushing 12 located below the guide vane 20 and a bushing 28 located above the guide vane 20. The upper end of the bushing 218 passes through the center hole of the pressure cap 29 and abuts against the lower end surface of the inner ring of the bearing 15, and the lower end abuts against the upper end surface of the inner periphery of the guide vane 20. The upper end of the bushing 12 abuts against the lower end surface of the inner periphery of the guide vane 20, and the lower end passes through the center hole of the annular support plate 2-1. The pump shaft 9 is also sleeved and fixed with a bushing cap 12-1 for axially pressing the bushing 12, the guide vane 20, the bushing 218 and the inner ring of the bearing 15.

[0037] More preferably, the inner wall surface of the central hole of the annular support plate 2-1 is provided with an annular stepped groove 2-2 with an opening facing upward and inner circumferentially, and the inner wall surface of the central hole of the pressure cap 19 is provided with an annular stepped groove 19-2 with an opening facing downward and inner circumferentially. A sealing ring 13 fitted onto the outer circumferentially of the pump shaft 9 is embedded and fixed inside the annular stepped groove 2-2, and a sealing ring 16 fitted onto the outer circumferentially of the pump shaft 9 is embedded and fixed inside the annular stepped groove 19-2.

[0038] More preferably, the sealing ring 13 is pressed and embedded in the annular stepped groove 2-2 by a cap 14 fixed to the upper end of the center hole of the annular support plate 2-1. The lower end of the inner peripheral wall of the annular stepped groove 19-2 is provided with an annular groove. The sealing ring 16 is pressed and embedded in the annular stepped groove 19-2 by a retaining ring 17 embedded in the annular groove.

[0039] More preferably, the support tube 2 has an air injection port on the side wall below the annular support plate 2-1, and the air injection port is connected to a nitrogen pipe 33; an oil injection pipe 22 is provided on the side wall of the bearing housing 3, and an oil injection hole communicating with the bearing mounting groove 3-1 is provided at the bottom of the bearing housing 3. The inner end of the oil injection pipe 22 is connected to the oil injection hole, and the outer end extends to the outside of the bearing housing 3 and is equipped with a sealing cap 22-1.

[0040] More preferably, the pump body 1 has a downward-facing inlet 1-1 and an outlet 1-2 with its opening facing horizontally. An upward-extending outlet pipe 6 is connected to the outlet 1-2. The pump body 1 also includes a horizontal support plate 7. The lower end of the bearing housing 3, the upper end of the outlet pipe 6, and the free end of the nitrogen pipe 33 are all inserted and fixed inside the through holes opened on the horizontal support plate 7. The upper surface of the horizontal support plate 7 is also provided with an outlet pipe head 8 that is connected to the upper end of the outlet pipe 6 and a nitrogen pipe head 34 that is connected to the nitrogen pipe 33.

[0041] More preferably, the bearing housing 3 has an upward-facing opening mounted on the top center of the bearing box 23, which is fitted onto the upper shoulder of the pump shaft 9. The bearing box 23 contains a bearing 24 fitted onto the pump shaft 9. The upper end of the pump shaft 9 is also fitted with a bearing cap 25 that presses and limits the inner ring of the bearing 24 onto the upper shoulder of the pump shaft 9. The bearing housing 26 also includes a pressure cover 26. The lower end face of the pressure cover 26 has an annular protrusion. The pressure cover 26 is fitted into the upper port of the bearing box 23 via the annular protrusion. The bearing cap 25 is fitted into the center hole of the pressure cover 26. The inner magnetic rotor 27 is fitted onto the upper end of the pump shaft 9. A gasket 31 is also laid on the inner ring of the upper end face of the inner magnetic rotor 27. A locking bolt 32 passes through the center hole of the gasket 31 and is screwed into the threaded blind hole on the upper end face of the pump shaft 9. The inner magnetic rotor 27 is fixedly connected to the upper end of the pump shaft 9 via the gasket 31 and the locking bolt 32.

[0042] More preferably, the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the upper end of the liquid outlet pipe 6 is provided with a flange plate 2b extending outward and a plug section d located above the flange plate 2b; the lower end of the liquid outlet pipe head 8 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the upper end of the nitrogen pipe 33 is provided with a flange plate 2b extending outward and a plug section d located above the flange plate 2b; the lower end of the nitrogen pipe head 34 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b. The upper end of the liquid outlet pipe 6, the lower end of the liquid outlet connector 8, the upper end of the nitrogen pipe 33, and the lower end of the nitrogen connector 34 are respectively inserted into the through holes on the horizontal support plate 7 through corresponding insertion sections d. The lower end of the bearing housing 3, the upper end of the liquid outlet pipe 6, the lower end of the liquid outlet connector 8, the upper end of the nitrogen pipe 33, and the lower end of the nitrogen connector 34 are also fixedly connected to the horizontal support plate 7 through bolt assemblies that pass through the flange plate 2b and the corresponding mounting holes on the horizontal support plate 7. The upper end of the liquid outlet pipe 6 and the lower end of the liquid outlet connector 8 are located on the upper and lower sides of the same through hole on the horizontal support plate 7, and the free end of the nitrogen pipe 33 and the lower end of the nitrogen connector 34 are located on the upper and lower sides of the same through hole on the horizontal support plate 7.

[0043] More preferably, the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the upper end of the liquid outlet pipe 6 is provided with a flange plate 2b extending outward and a plug section d located above the flange plate 2b; the lower end of the liquid outlet pipe head 8 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the upper end of the nitrogen pipe 33 is provided with a flange plate 2b extending outward and a plug section d located above the flange plate 2b; the lower end of the nitrogen pipe head 34 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b; the lower end of the bearing housing 3 is provided with a flange plate 2b extending outward and a plug section d located below the flange plate 2b. The upper end of the liquid outlet pipe 6, the lower end of the liquid outlet connector 8, the upper end of the nitrogen pipe 33, and the lower end of the nitrogen connector 34 are respectively inserted into the through holes on the horizontal support plate 7 through corresponding insertion sections d. The lower end of the bearing housing 3, the upper end of the liquid outlet pipe 6, the lower end of the liquid outlet connector 8, the upper end of the nitrogen pipe 33, and the lower end of the nitrogen connector 34 are also fixedly connected to the horizontal support plate 7 through bolt assemblies that pass through the flange plate 2b and the corresponding mounting holes on the horizontal support plate 7. The upper end of the liquid outlet pipe 6 and the lower end of the liquid outlet connector 8 are located on the upper and lower sides of the same through hole on the horizontal support plate 7, and the free end of the nitrogen pipe 33 and the lower end of the nitrogen connector 34 are located on the upper and lower sides of the same through hole on the horizontal support plate 7.

[0044] More preferably, the upper end of the support tube 2 is provided with a flange plate a extending outward, and the lower end face of the insertion section d of the bearing housing 3 is provided with a plurality of threaded blind holes spaced in a circumferential manner. The upper end of the support tube 2 and the lower end of the bearing housing 3 are fixedly connected together by screws that pass through the mounting holes on the flange plate a and the corresponding threaded blind holes on the lower end face of the insertion section d.

[0045] The lower end of the isolation sleeve 28 is provided with a flange plate 28-1 extending outward. The outer periphery of the upper surface of the bearing housing 3 is provided with a number of threaded blind holes spaced apart. It also includes a pressure ring 29 coaxially pressed onto the upper surface of the flange plate 28-1 on the isolation sleeve 28. The outer periphery of the pressure ring 29 is provided with a number of mounting holes spaced apart. The pressure ring 29 is fixedly connected to the threaded blind holes on the top of the bearing housing 3 by screws passing through the mounting holes.

[0046] Sealing rings c are respectively installed on the following seams: the upper end face of flange plate a at the upper end of the support pipe 2 and the lower end face of insertion section d at the lower end of the bearing housing 3; the lower end face of insertion section d at the lower end of the bearing housing 3 and the upper end face of pressure cap 19; the lower end face of pressure cap 19 and the upper end face of pressure cap 21; the lower end face of flange plate b at the lower end of the bearing housing 3 and the upper end face of horizontal support plate 7; the lower end face of flange plate 28-1 and the outer periphery of the top upper end face of bearing housing 3; and the seam between the upper end face of insertion section d on liquid outlet pipe 6 and the lower end face of insertion section d on liquid outlet pipe head 8. Specifically, flange plates extending outward are provided at the upper end of the liquid outlet pipe 8, the upper end of the nitrogen outlet pipe 34, the lower end of the liquid outlet pipe 6, the upper part of the liquid outlet 1-2, the top of the bearing housing 3, and the lower end of the motor base 4, in order to improve the convenience of connecting and using the various pipes.

[0047] This utility model discloses a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It features a small footprint, compact structure, stable operation, low noise, and the ability to run dry. The magnetic drive assembly is installed at the top, and the pump body at the bottom. A pump cover is installed at the top of the pump body to separate the pump body's internal cavity from the support pipe's internal cavity. A dynamic sealing assembly is located in the middle of the pump shaft. When the impeller in the pump body's internal cavity rotates with the pump shaft to convey material, the pump cover provides the first static seal, allowing material to pass through the pump body's internal cavity without flowing into the support pipe's internal cavity. Simultaneously, the dynamic sealing assembly provides the second dynamic seal as it rotates with the pump shaft, isolating and sealing volatile gases that may escape into the support pipe's internal cavity, effectively preventing volatile gases from entering the support pipe. The solid component enters the magnetic drive assembly or escapes to the outside of the pump body, preventing cavitation in the magnetic drive assembly and ensuring excellent, long-lasting, fully sealed performance of the magnetic vertical submersible slurry pump for conveying titanium tetrachloride. Because the magnetic drive assembly is located at the top, when conveying slurry containing solid components, the solid components are isolated from the pump body cavity by the first static seal of the pump cover, preventing them from entering the dynamic sealing assembly. This significantly reduces the maintenance frequency of both the dynamic sealing assembly and the magnetic drive assembly, ensuring that the magnetic vertical submersible slurry pump for conveying titanium tetrachloride is suitable for materials containing solid components and materials containing volatile components, with a long service life and high safety and reliability.

[0048] This utility model discloses a magnetic vertical submersible slurry pump for conveying titanium tetrachloride. It utilizes a coupled transmission system with inner and outer magnetic rotors. The outer magnetic rotor is directly connected to a motor, while an isolation sleeve seals the inner magnetic rotor within the pump cavity. This combination of magnetic drive and sealing technology results in a fully sealed, leak-free, pollution-free, wear-resistant, safe, reliable, and long-lasting pump. It fundamentally solves the transportation problems of media containing solid particles and easily vaporized materials. This pump is a typical submersible magnetic pump capable of conveying media containing solid particles, and is suitable for conveying media containing impurities, corrosive, flammable, explosive, and toxic substances. It can be widely used in industries such as power, metallurgy, pharmaceuticals, and petrochemicals.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A magnetic vertical submersible slurry pump for conveying titanium tetrachloride, characterized in that, The system includes, from bottom to top, a pump body (1), a support pipe (2), a bearing housing (3), a motor base (4), and a motor (5), which are connected in sequence. A pump shaft (9) is rotatably mounted inside the pump body (1), the support pipe (2), and the bearing housing (3). An impeller (10) is installed at the lower end of the pump shaft (9) in the inner cavity of the pump body (1). A pump cover (11) is installed at the upper end of the pump body (1) to separate the inner cavity of the pump body (1) from the inner cavity of the support pipe (2). The middle part of the pump shaft (9) rotatably passes through the joint between the support pipe (2) and the bearing housing (3) via a dynamic sealing assembly. The upper end of the bearing housing (3) is rotated through the top and fixedly installed with an inner magnetic rotor (27) located in the inner cavity of the motor base (4). The inner cavity of the motor base (4) is also equipped with an isolation sleeve (28) covering the inner magnetic rotor (27) and an outer magnetic rotor (30) covering the outer periphery of the isolation sleeve (28). The inner magnetic rotor (27) and the outer magnetic rotor (30) are coaxially arranged. The outer magnetic bushing (30-1) fixed above the top of the outer magnetic rotor (30) is sleeved and fixed on the motor output shaft (5-1) of the motor (5) extending into the inner cavity of the motor base (4).

2. The magnetic vertical submersible slurry pump as described in claim 1, characterized in that, The pump shaft (9) is fitted with a pressure cap three (21), a guide vane (20), a pressure cap two (19), and a bearing one (15) sequentially from bottom to top in the middle. The bearing housing (3) has a bearing mounting groove (3-1) with its opening facing downwards at the bottom. The outer periphery of the upper end face of the pressure cap two (19) is provided with an annular protrusion one (19-1) for abutting against the lower end face of the outer ring of the bearing one (15). The bearing one (15) is press-fitted into the bearing mounting groove (3-1) by the pressure cap two (19). The outer periphery of the pressure cap three (21) and the outer periphery of the pressure cap two (19) are fixedly connected to the threaded blind hole at the bottom of the bearing housing (3) by screws passing through the corresponding mounting holes on the two. The guide vane (20) is sleeved and fixed on the pump shaft (9), and the guide vane (20) is located inside the annular cavity formed by the mating between the pressure cap three (21) and the pressure cap two (19). The pressure cap three (21), the guide vane (20), the pressure cap two (19) and the bearing one (15) constitute the dynamic sealing assembly.

3. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 2, characterized in that, The upper end of the inner wall of the support tube (2) is provided with an annular support plate (2-1) in the horizontal direction. The pump shaft (9) is also fitted with a bushing one (12) located on the lower side of the guide vane (20) and a bushing two (18) located on the upper side of the guide vane (20). The upper end of the bushing two (18) passes through the center hole of the pressure cap two (19) and abuts against the lower end surface of the inner ring of the bearing one (15), and the lower end abuts against the upper end surface of the inner periphery of the guide vane (20). The upper end of the bushing one (12) abuts against the lower end surface of the inner periphery of the guide vane (20), and the lower end passes through the center hole of the annular support plate (2-1). The pump shaft (9) is also fitted with a bushing cap (12-1) for axially pressing the inner ring of the bushing one (12), the guide vane (20), the bushing two (18) and the bearing one (15).

4. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 3, characterized in that, The inner wall of the central hole of the annular support plate (2-1) is provided with an annular stepped groove 1 (2-2) with an opening facing upward and inner circumferential side. The inner wall of the central hole of the pressure cap 2 (19) is provided with an annular stepped groove 2 (19-2) with an opening facing downward and inner circumferential side. The annular stepped groove 1 (2-2) is fitted with a sealing ring 1 (13) that is sleeved on the outer circumferential side of the pump shaft (9). The annular stepped groove 2 (19-2) is fitted with a sealing ring 2 (16) that is sleeved on the outer circumferential side of the pump shaft (9).

5. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 4, characterized in that, The sealing ring one (13) is pressed and embedded in the annular stepped groove one (2-2) by a pressure cap one (14) fixed to the upper end of the center hole of the annular support plate (2-1). The lower end of the inner circumferential wall of the annular stepped groove two (19-2) is provided with an annular groove. The sealing ring two (16) is pressed and embedded in the annular stepped groove two (19-2) by a retaining ring (17) embedded in the annular groove.

6. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 5, characterized in that, The support tube (2) is provided with an air injection port on the side wall below the annular support plate (2-1), and the air injection port is connected to a nitrogen pipe (33). The bearing housing (3) is provided with an oil injection pipe (22) on its side wall. The bearing housing (3) has an oil injection hole at its bottom that communicates with the bearing mounting groove (3-1). The inner end of the oil injection pipe (22) is connected to the oil injection hole, and the outer end extends to the outside of the bearing housing (3) and is fitted with a sealing cap (22-1).

7. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 6, characterized in that, The pump body (1) has a downward-facing inlet (1-1) and an outlet (1-2) facing the horizontal direction. An upward-extending outlet pipe (6) is installed on the outlet (1-2). The pump body (1) also includes a horizontal support plate (7). The lower end of the bearing housing (3), the upper end of the outlet pipe (6), and the free end of the nitrogen pipe (33) are all inserted and fixed inside the through hole opened on the horizontal support plate (7). The upper surface of the horizontal support plate (7) is also provided with an outlet pipe head (8) connected to the upper end of the outlet pipe (6) and a nitrogen pipe head (34) connected to the nitrogen pipe (33).

8. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 7, characterized in that, The bearing housing (3) has an opening facing upwards and is fitted onto the upper shoulder of the pump shaft (9). Inside the bearing housing (23) is a bearing two (24) fitted onto the pump shaft (9). The upper end of the pump shaft (9) is also fitted with a bearing cap (25) that presses and limits the inner ring of the bearing two (24) onto the upper shoulder of the pump shaft (9). The bearing housing (26) also includes a pressure cover four (26). The lower end face of the pressure cover four (26) is provided with an annular protrusion two. The pressure cover four (26) is embedded through the annular protrusion two. At the upper port of the bearing housing (23), the bearing cap (25) is embedded in the center hole of the pressure cover (26). The inner magnetic rotor (27) is sleeved on the upper end of the pump shaft (9). A gasket (31) is also laid on the inner ring of the upper end face of the inner magnetic rotor (27). The locking bolt (32) passes through the center hole of the gasket (31) and is screwed into the threaded blind hole on the upper end face of the pump shaft (9). The inner magnetic rotor (27) is fixedly connected to the upper end of the pump shaft (9) through the gasket (31) and the locking bolt (32).

9. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 8, characterized in that, The bearing housing (3) has a flange plate two (b) extending outward and a plug section (d) below the flange plate two (b) at its lower end. The liquid outlet pipe (6) has a flange plate two (b) extending outward and a plug section (d) above the flange plate two (b) at its upper end. The liquid outlet pipe head (8) has a flange plate two (b) extending outward and a plug section (d) below the flange plate two (b) at its lower end. The nitrogen pipe (33) has a flange plate two (b) extending outward and a plug section (d) above the flange plate two (b) at its upper end. The nitrogen pipe head (34) has a flange plate two (b) extending outward and a plug section (d) below the flange plate two (b) at its lower end. The bearing housing (3) has a flange plate two (b) extending outward and a plug section (d) below the flange plate two (b) at its lower end. The upper end of the liquid outlet pipe (6), the lower end of the liquid outlet connector (8), the upper end of the nitrogen pipe (33), and the lower end of the nitrogen connector (34) are respectively inserted into the through holes on the horizontal support plate (7) through corresponding plug sections (d). The lower end of the bearing box (3), the upper end of the liquid outlet pipe (6), the lower end of the liquid outlet connector (8), the upper end of the nitrogen pipe (33), and the lower end of the nitrogen connector (34) are also fixedly connected to the horizontal support plate (7) through bolt assemblies that pass through the flange plate (b) and the corresponding mounting holes on the horizontal support plate (7). The upper end of the liquid outlet pipe (6) and the lower end of the liquid outlet connector (8) are located on the upper and lower sides of the same through hole on the horizontal support plate (7), and the free end of the nitrogen pipe (33) and the lower end of the nitrogen connector (34) are located on the upper and lower sides of the same through hole on the horizontal support plate (7).

10. The magnetic vertical submersible slurry pump for conveying titanium tetrachloride as described in claim 9, characterized in that, The upper end of the support tube (2) is provided with a flange plate (a) extending outward to the periphery. The lower end of the insertion section (d) of the bearing box (3) is provided with a number of threaded blind holes spaced around the circumference. The upper end of the support tube (2) and the lower end of the bearing box (3) are fixedly connected together by screws that pass through the mounting holes on the upper flange plate (a) and the corresponding threaded blind holes on the lower end of the insertion section (d). The lower end of the isolation sleeve (28) is provided with a flange plate (28-1) extending outward. The outer periphery of the top surface of the bearing housing (3) is provided with a number of threaded blind holes spaced apart. It also includes a pressure ring (29) coaxially pressed onto the upper surface of the flange plate (28-1) of the isolation sleeve (28). The outer periphery of the pressure ring (29) is provided with a number of mounting holes spaced apart. The pressure ring (29) is fixedly connected to the threaded blind holes on the top of the bearing housing (3) by screws passing through the mounting holes. Sealing rings (c) are respectively installed on the butt joint between the upper end face of the flange plate (a) at the upper end of the support pipe (2) and the lower end face of the insertion section (d) at the lower end of the bearing housing (3), the butt joint between the lower end face of the insertion section (d) at the lower end of the bearing housing (3) and the upper end face of the pressure cap (19), the butt joint between the lower end face of the pressure cap (19) and the upper end face of the pressure cap (21), the butt joint between the lower end face of the flange plate (b) at the lower end of the bearing housing (3) and the upper end face of the horizontal support plate (7), the butt joint between the lower end face of the flange plate (28-1) and the outer periphery of the top upper end face of the bearing housing (3), and the butt joint between the upper end face of the insertion section (d) on the liquid outlet pipe (6) and the lower end face of the insertion section (d) on the liquid outlet pipe head (8).

Images