Multistage magnetic drive side channel pump

Abstract

The embodiment of the utility model provides a multistage magnetic drive side channel pump which comprises an inner core, the inner core comprises a first water inlet section, a centrifugal impeller, an inner shell front section, vortex open type blades, an inner shell rear section, a main shaft, a first water outlet section and a penetrating lever, one end of the main shaft is connected with a magnetic rotor component, and the inner core is connected with an outer shell. The inner core is located in the outer shell, the outer shell comprises a second water inlet section and a second water outlet section, and the second water inlet section and the second water outlet section are both communicated with the inner core. The outer shell is arranged outside the inner core, even if the inner core leaks, leaked conveying media are located in the outer shell, so that double-layer sealing is achieved, and the problem that an existing multi-stage magnetic drive side channel pump has the leakage risk is solved.

Description

Technical Field

[0001] The present application relates to the field of magnetic pumps, and in particular, to a multi-stage magnetic drive side-channel pump. Background Art

[0002] Magnetic pumps belong to a branch of the water pump field. They are products that apply the working principle of permanent magnet couplings to centrifugal pumps and are composed of a pump, a magnetic drive, and an electric motor. The magnetic drive consists of an outer magnetic rotor, an inner magnetic rotor, and a non-magnetic isolation sleeve. When the electric motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic substances, driving the inner magnetic rotor connected to the impeller to rotate synchronously, realizing the non-contact synchronous transmission of power.

[0003] Current multi-stage magnetic drive side-channel pumps, such as Figure 1 shown, use an existing through-bar 8 to connect components such as an existing front housing section 4, an existing vortex open vane 5, and an existing rear housing section 6 in series, and gaskets are used to seal between the front and rear housings of each stage.

[0004] However, since there is no protective measure outside the housing, after running for a period of time, as each component wears, the conveyed medium may flow out between the existing front housing section 4 and the existing rear housing section 6, posing a risk of leakage. Especially for the conveyance of some dangerous media, once leakage occurs, it poses a greater threat to the safety of on-site workers and environmental pollution. Utility Model Content

[0005] The embodiments of the present application provide a multi-stage magnetic drive side-channel pump, which solves the problem of the lack of protective measures outside the housing of the current structure and the risk of leakage through a double-seal structure.

[0006] The embodiments of the present application provide a multi-stage magnetic drive side-channel pump, including a core. The core includes a first water inlet section, a centrifugal impeller, a front inner housing section, a vortex open vane, a rear inner housing section, a main shaft, a first water outlet section, and a through-bar. One end of the main shaft is connected to a magnetic rotor component. The core is connected to an outer housing, the core is located inside the outer housing, the outer housing includes a second water inlet section and a second water outlet section, and both the second water inlet section and the second water outlet section are in communication with the core.

[0007] In a feasible implementation manner, the outer housing is barrel-shaped, the open end of the outer housing faces the magnetic rotor component, the magnetic rotor component is located outside the core, and the open end of the outer housing is connected to the outer edge of the end of the first water outlet section facing the magnetic rotor component;

[0008] The second water inlet section is provided at the other end of the outer housing, the second water inlet section is in communication with the first water inlet section, the second water outlet section is provided on the outer periphery of the open end of the outer housing, and the second water outlet section is in communication with the first water outlet section.

[0009] In a feasible implementation, a static gasket is provided between the open end of the outer housing and the outer edge of the end of the first water outlet section facing the magnetic rotor component.

[0010] In a feasible implementation, the open end of the outer housing, the static gasket and the outer edge of the end of the first water outlet section facing the magnetic rotor component are connected by bolts.

[0011] In a feasible implementation, a radial guide vane is fixedly installed on one side of the centrifugal impeller facing the magnetic rotor component.

[0012] In a feasible implementation, the other end of the main shaft passes through the first water outlet section, the rear section of the inner housing, the front section of the inner housing and the first water inlet section and then fixedly installs the centrifugal impeller. The vortex open vane is fixedly installed on the main shaft, and the vortex open vane is located between the centrifugal impeller and the first water outlet section.

[0013] In a feasible implementation, the vortex open vane is located between the rear section of the inner housing and the front section of the inner housing.

[0014] In a feasible implementation, the number of the vortex open vanes is 2 - 4.

[0015] In a feasible implementation, the through-bar connects the first water inlet section and the first water outlet section by threads.

[0016] In a feasible implementation, the number of the through-bars is at least two.

[0017] A multistage magnetic drive side-channel pump provided by an embodiment of the present application has an outer housing arranged outside the inner core. Even if the inner core leaks, the leaked conveying medium is located inside the outer housing, thereby achieving double sealing and solving the problem of leakage risk existing in the existing multistage magnetic drive side-channel pump. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a multistage magnetic drive side-channel pump in the prior art;

[0019] Figure 2 is a schematic structural diagram of a multistage magnetic drive side-channel pump provided by an embodiment of the present application.

[0020] Description of the Reference Numerals:

[0021] 1 - Existing water inlet section; 2 - Existing centrifugal impeller; 3 - Existing diverter vane; 4 - Existing front housing section; 5 - Existing volute open vane; 6 - Existing rear housing section; 7 - Existing shaft; 8 - Existing through-bar; 9 - Existing water outlet section; 10 - Existing magnetic rotor component;

[0022] 21 - First water inlet section; 22 - Centrifugal impeller; 23 - Inner front housing section; 24 - Volute open vane; 25 - Inner rear housing section; 26 - Main shaft; 27 First water outlet section; 28 - Through-bar;

[0023] 30 - Magnetic rotor component; 41 - Outer housing; 42 - Second water inlet section; 43 - Second water outlet section; 44 - Radial guide vane. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0025] Figure 1 It is a schematic structural diagram of a multi-stage magnetic drive side-channel pump in the prior art. Referring to Figure 1 As shown, the existing multi-stage magnetic drive side-channel pump includes an existing water inlet section 1, an existing centrifugal impeller 2, an existing diverter vane 3, an existing front housing section 4, an existing volute open vane 5, an existing rear housing section 6, an existing shaft 7, an existing through-bar 8, an existing water outlet section 9, and an existing magnetic rotor component 10. The existing through-bar 8 connects the existing water inlet section 1 and the existing water outlet section 9. The existing magnetic rotor component 10 is arranged outside and connected to the existing water outlet section 9. The output end of the existing magnetic rotor component 10 is also connected to the input end of the existing shaft 7. The existing centrifugal impeller 2 and the existing volute open vane 5 are arranged on the existing shaft 7. The existing diverter vane 3 is arranged on the back of the existing centrifugal impeller 2, that is, on the side of the existing centrifugal impeller 2 away from the existing water inlet section 1. Multiple existing front housing sections 4 and multiple existing rear housing sections 6 are arranged alternately.

[0026] During its use, the rotation of the existing centrifugal impeller 2 will generate vibrations, resulting in wear between the existing front housing section 4 and the existing rear housing section 6. After long-term use, the transported medium may leak. Since multi-stage magnetic drive side-channel pumps are mostly used to transport dangerous media, once leakage occurs, it will pose a greater threat to the safety of on-site workers and environmental pollution.

[0027] To solve the above problems, the present application provides a multi-stage magnetic drive side-channel pump. The multi-stage magnetic drive side-channel pump provided by the present application will be described below in conjunction with embodiments.

[0028] Figure 2 It is a schematic structural diagram of a multi-stage magnetic drive side-channel pump provided by an embodiment of the present application. Refer to Figure 2 As shown, the embodiment of the present application provides a multi-stage magnetic drive side-channel pump, including an inner core. The inner core includes a first water inlet section 21, a centrifugal impeller 22, a front inner housing section 23, a vortex open vane 24, a rear inner housing section 25, a main shaft 26, a first water outlet section 27, and a through-bar 28. One end of the main shaft 26 is connected to a magnetic rotor component 30. The inner core is connected to an outer housing 41. The inner core is located inside the outer housing 41. The outer housing 41 includes a second water inlet section 42 and a second water outlet section 43. Both the second water inlet section 42 and the second water outlet section 43 are communicated with the inner core.

[0029] It is easy to understand that the inner core is the existing multi-stage magnetic drive side-channel pump, but the component sizes are adjusted. For example, when the material stiffness and strength of the through-bar 28 are satisfied, its diameter is minimized as much as possible. Another example is to reduce the internal space of the first water inlet section 21, etc., so that the inner core structure is more compact, reducing material costs and processing costs.

[0030] In some examples, the outer housing 41 is barrel-shaped, the open end of the outer housing 41 faces the magnetic rotor component 30. The magnetic rotor component 30 is located outside the inner core. The open end of the outer housing 41 is connected to the outer edge of the end of the first water outlet section 27 facing the magnetic rotor component 30;

[0031] The second water inlet section 42 is arranged at the other end of the outer housing 41. The second water inlet section 42 is communicated with the first water inlet section 21. The second water outlet section 43 is arranged on the outer periphery of the open end of the outer housing 41. The second water outlet section 43 is communicated with the first water outlet section 27.

[0032] In the above embodiment, the inner core is wrapped by the barrel-shaped outer housing 41 to achieve secondary sealing, and the sealing effect is better. Even if the transported medium leaks, the leaked medium is located inside the outer housing 41. Moreover, the second water inlet section 42 of the outer housing 41 is communicated with the first water inlet section 21 of the inner core. The leaked medium inside the outer housing 41 can be transported again through the first water inlet section 21 and will not flow to the outside. The pressure inside the outer housing 41 will not be too high, thus avoiding damage to the outer housing 41 and further ensuring the safety of on-site workers and the environment.

[0033] And it is easy to understand that since the problem of medium leakage has been solved, there is no need to set a gasket between the front section 23 and the rear section 25 of the inner housing, nor to pay attention to the problem of medium leakage caused by whether the gasket is balanced, or the problem of medium leakage caused by the failure of the gasket during long-term operation.

[0034] In some examples, a static gasket is provided between the open end of the outer housing 41 and the outer edge of the end of the first water outlet section 27 facing the magnetic rotor component 30. Among them, the static gasket is not shown in the figure.

[0035] In some examples, the open end of the outer housing 41, the static gasket and the outer edge of the end of the first water outlet section 27 facing the magnetic rotor component 30 are connected by bolts.

[0036] In the above embodiment, the sealing performance between the outer housing 41 and the first water outlet section 27 is enhanced by the static gasket to prevent the medium in the outer housing 41 from leaking through here.

[0037] In some examples, a radial guide vane 44 is fixedly installed on one side of the centrifugal impeller 22 facing the magnetic rotor component 30.

[0038] In the above embodiment, the existing diversion vane 3 in the prior art is replaced by the radial guide vane 44. The radial guide vane 44 has a smaller size and can introduce the medium more evenly into the vortex open vane 24, with a better diversion effect, which improves the medium in terms of hydraulic loss, and also has certain improvements in vibration, noise, and the radial force of the sliding bearing, etc.

[0039] In some examples, the other end of the main shaft 26 passes through the first water outlet section 27, the rear section 25 of the inner housing, the front section 23 of the inner housing and the first water inlet section 21 and then the centrifugal impeller 22 is fixedly installed. The vortex open vane 24 is fixedly installed on the main shaft 26, and the vortex open vane 24 is located between the centrifugal impeller 22 and the first water outlet section 27.

[0040] In some examples, the vortex open vane 24 is located between the rear section 25 of the inner housing and the front section 23 of the inner housing.

[0041] In some examples, the number of the vortex open vanes 24 is 2 - 4.

[0042] In some examples, the through-bar 28 connects the first water inlet section 21 and the first water outlet section 27 by threads.

[0043] In some examples, the number of the through-bars 28 is at least two.

[0044] In the above embodiments, the inner core is fixed by multiple through bars 28 to enhance the connection tightness and stability between the components of the inner core.

[0045] From the above content, it can be seen that the multi-stage magnetic drive side-channel pump provided by the embodiments of the present application solves the leakage problem through double-layer sealing. The radial guide vane 44 cooperates with the centrifugal impeller 22 to evenly introduce the conveying medium into the first water inlet section 21, and then cooperates with the vortex open vane 24 to convey it to the first water outlet section 27, and finally conveys it out through the second water outlet section 43. It can solve the problems of liquid shortage, damage to the bearing caused by excessive local turbulence, or vibration and excessive noise. The overall structure assembly is relatively simple, and it is of great significance in the application of high-lift working conditions, petroleum, chemical and other fields.

[0046] It is easy to understand that those skilled in the art can combine, split, and recombine the embodiments of the present application based on several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0047] The above specific implementation manners further elaborate on the purpose, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above are only the specific implementation manners of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A multi-stage magnetically driven side channel pump, characterized in that: The invention comprises an inner core, wherein the inner core comprises a first water inlet section (21), a centrifugal impeller (22), a front section of an inner casing (23), vortex open blades (24), a rear section of an inner casing (25), a main shaft (26), a first water outlet section (27) and a through rod (28), one end of the main shaft (26) being connected to a magnetic rotor component (30), and is characterized in that: the inner core is connected to an outer casing (41), the inner core is located inside the outer casing (41), the outer casing (41) comprises a second water inlet section (42) and a second water outlet section (43), and the second water inlet section (42) and the second water outlet section (43) are both connected to the inner core.

2. The multi-stage magnetically driven side channel pump according to claim 1, characterized in that: The outer shell (41) is barrel-shaped, the open end of the outer shell (41) faces the magnetic rotor component (30), the magnetic rotor component (30) is located outside the inner core, and the open end of the outer shell (41) is connected to the outer edge of the end of the first water outlet section (27) facing the magnetic rotor component (30); The second water inlet section (42) is arranged at the other end of the outer shell (41), and the second water inlet section (42) is communicated with the first water inlet section (21). The second water outlet section (43) is arranged at the periphery of the open end of the outer shell (41), and the second water outlet section (43) is communicated with the first water outlet section (27).

3. The multi-stage magnetically driven side channel pump according to claim 1, characterized in that: A static sealing gasket is provided between the open end of the outer shell (41) and the outer edge of the end of the first water outlet section (27) facing the magnetic rotor component (30).

4. The multi-stage magnetically driven side channel pump according to claim 3, characterized in that: The open end of the outer shell (41), the static sealing gasket and the outer edge of the end of the first water outlet section (27) facing the magnetic rotor component (30) are connected by bolts.

5. The multi-stage magnetically driven side channel pump according to any one of claims 1 to 4, characterized in that: A radial guide vane (44) is fixedly mounted on a side of the centrifugal impeller (22) facing the magnetic rotor component (30).

6. The multi-stage magnetically driven side channel pump according to any one of claims 1 to 4, characterized in that: The other end of the main shaft (26) passes through the first water outlet section (27), the inner casing rear section (25), the inner casing front section (23) and the first water inlet section (21), and then the centrifugal impeller (22) is fixedly mounted thereon; the vortex open blades (24) are fixedly mounted on the main shaft (26), and the vortex open blades (24) are located between the centrifugal impeller (22) and the first water outlet section (27).

7. The multi-stage magnetically driven side channel pump according to claim 6, characterized in that: The swirl open blade (24) is located between the inner casing rear section (25) and the inner casing front section (23).

8. The multi-stage magnetically driven side channel pump according to claim 7, characterized in that: The number of the vortex open blades (24) is 2-4.

9. The multi-stage magnetically driven side channel pump according to any one of claims 1 to 4, characterized in that: The through rod (28) connects the first water inlet section (21) and the first water outlet section (27) via threads.

10. The multi-stage magnetically driven side channel pump according to claim 9, characterized in that: The number of the piercing bars (28) is at least two.

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