Vertical submersible pump

Abstract

The utility model belongs to the technical field of submersible pump, concretely relates to a vertical submersible pump, and aims at the deficiency that the stator of the vertical submersible pump with stainless steel motor shell can be displaced, and the utility model adopts the following technical scheme: a vertical submersible pump, the vertical submersible pump includes motor, and the motor includes: stainless steel shell, lower bearing seat, upper bearing seat, stator, insulation support piece, wherein, the stator and stainless steel shell interference fit, wherein, the both ends of stainless steel shell are sealedly connected with lower bearing seat and upper bearing seat, and insulation support piece is located between stator and lower bearing seat.The beneficial effects of the vertical submersible pump of the utility model are as follows: the motor adopts stainless steel shell, compared with foundry shell, has many advantages such as light weight, stable quality and the like; insulation support piece is arranged between the stator and the lower bearing seat below the stator, reliably supports the stator, prevents the stator from descending relative to the stainless steel shell and simultaneously ensures the insulation between the stator and the lower bearing seat.

Description

Technical Field

[0001] This utility model belongs to the field of submersible pump technology, specifically relating to a vertical submersible pump. Background Technology

[0002] Submersible pumps are important equipment for lifting water. When in use, the entire unit is submerged in water and can be used for domestic water supply, mine rescue, industrial cooling, farmland irrigation, seawater lifting, and fountain landscaping.

[0003] The motor is a crucial component of a submersible pump. Submersible pump motors often use cast iron housings. However, submersible pumps with cast iron housing motors have several drawbacks: The casting process inevitably generates dust, exhaust gas, and slag; submersible pump motors operate underwater, requiring high sealing performance of the housing, and defects such as porosity, sand holes, shrinkage cavities, and microcracks from the casting process are difficult to completely eliminate; the thickness of the motor housing parts is limited by the blank forming process, resulting in a heavy housing that doesn't meet users' demands for portability; the chemical properties of cast iron mean that cast iron housing motors have poor corrosion resistance, limiting the pump's application range and lifespan; the appearance of castings is significantly worse than rolled or polished materials, limiting aesthetic improvements and creating a poor first impression; the casting production process involves many uncertainties, resulting in poor timely batch delivery capabilities and difficulty meeting the market demands for rapid, high-volume production; and considering environmental protection, quality stability, material consumption, appearance, and batch delivery, castings are generally more expensive.

[0004] Submersible pumps using stainless steel stamped housings can solve the above problems. For example, Chinese utility model patent CN214063310U discloses a submersible pump with a motor featuring a stainless steel stamped housing. However, in this type of vertical submersible pump (vertical meaning the motor is axially upright), the stator and stainless steel housing are tightly fitted together. During use, the stator may descend relative to the stainless steel housing due to the lack of support. Summary of the Invention

[0005] This invention addresses the issue of potential stator displacement in existing vertical submersible pumps with stainless steel motor housings by providing a vertical submersible pump that supports the stator and prevents stator displacement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vertical submersible pump, wherein the vertical submersible pump includes a motor, and the motor includes:

[0007] Stainless steel casing;

[0008] Lower bearing housing;

[0009] Upper bearing housing;

[0010] stator;

[0011] Insulating support components;

[0012] The stator and the stainless steel housing are interference-fitted.

[0013] The stainless steel outer shell is sealed to the lower bearing housing and the upper bearing housing at both ends, respectively, and the insulating support is located between the stator and the lower bearing housing.

[0014] The vertical submersible pump of this utility model has a stainless steel housing for its motor, which has many advantages such as light weight and stable quality compared with the cast housing. An insulating support is provided between the stator and the lower bearing seat below it to reliably support the stator and prevent the stator from falling relative to the stainless steel housing (normally the stator will not rise relative to the stainless steel housing due to gravity). At the same time, it ensures insulation between the stator and the lower bearing seat.

[0015] As an improvement, the insulating support is circular in shape.

[0016] As an improvement, an annular groove is formed at the lower edge of the stator, and the insulating support is located in the annular groove.

[0017] As an improvement, the cross-section of the annular groove is a right trapezoid with a larger bottom and a smaller top.

[0018] As an improvement, the stainless steel casing is generally circular.

[0019] As an improvement, the stainless steel casing includes a middle section, a lower section, and an upper section, with the middle section being thicker than the lower and upper sections; the stainless steel casing is symmetrical from top to bottom.

[0020] As an improvement, two first sealing rings are provided axially distributed between the stainless steel housing and the lower bearing housing; and two second sealing rings are provided axially distributed between the stainless steel housing and the upper bearing housing.

[0021] As an improvement, the lower bearing housing has a first protrusion with a first sealing groove and a first sealing ring located in the first sealing groove, and the lower end of the insulating support abuts against the first protrusion; the upper bearing housing has a second protrusion with a second sealing groove and a second sealing ring located in the second sealing groove.

[0022] As an improvement, the lower bearing housing and the upper bearing housing are fixedly connected by a threaded connection assembly.

[0023] As an improvement, a lower bearing is provided in the lower bearing housing; an upper bearing is provided in the upper bearing housing; the vertical submersible pump includes, from bottom to top, a base, a mesh cover, a pump body, a cylinder cover, a motor, and a handle. The pump body and the cylinder cover form a conveying chamber, and an impeller is provided in the conveying chamber.

[0024] The beneficial effects of this utility model of vertical submersible pump are: the motor adopts a stainless steel shell, which has many advantages such as light weight and stable quality compared with the cast shell; an insulating support is provided between the stator and the lower bearing seat below it to reliably support the stator and prevent the stator from falling relative to the stainless steel shell (usually the stator will not rise relative to the stainless steel shell due to gravity), while ensuring insulation between the stator and the lower bearing seat. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the vertical submersible pump according to Embodiment 1 of this utility model.

[0026] Figure 2 This is a front view of the vertical submersible pump according to Embodiment 1 of this utility model.

[0027] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0028] Figure 4 This is a three-dimensional structural diagram of the stainless steel casing of the vertical submersible pump according to Embodiment 1 of this utility model.

[0029] In the picture, 1. Base

[0030] 2. Netting;

[0031] 3. Pump body;

[0032] 4. Oil cylinder cover;

[0033] 5. Motor; 51. Stainless steel housing; 511. Middle section; 512. Lower section; 513. Upper section; 52. Lower bearing housing; 521. First protrusion; 53. Upper bearing housing; 54. Stator; 541. Annular groove; 55. Insulating support component;

[0034] 6. Top cover;

[0035] 7. Handle;

[0036] 8. Impeller;

[0037] 9. Threaded connection assembly. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0039] See Figures 1 to 4A vertical submersible pump according to an embodiment of the present invention includes a motor, the motor comprising:

[0040] Stainless steel casing;

[0041] Lower bearing housing;

[0042] Upper bearing housing;

[0043] stator;

[0044] Insulating support components;

[0045] The stator and the stainless steel housing are interference-fitted.

[0046] The stainless steel outer shell is sealed to the lower bearing housing and the upper bearing housing at both ends, respectively, and the insulating support is located between the stator and the lower bearing housing.

[0047] The vertical submersible pump of this utility model uses a stainless steel housing for its motor, which has many advantages such as light weight and stable quality compared to a cast housing. An insulating support is provided between the stator and the lower bearing seat below it to reliably support the stator and prevent the stator from falling relative to the stainless steel housing (normally the stator will not rise relative to the stainless steel housing due to gravity). At the same time, it ensures insulation between the stator and the lower bearing seat.

[0048] Example 1

[0049] See Figures 1 to 4 This utility model discloses a vertical submersible pump, which includes, from bottom to top, a base 1, a mesh cover 2, a pump body 3, a cylinder cover 4, a motor 5, and a handle 7. The pump body 3 and the cylinder cover 4 form a conveying chamber, in which an impeller 8 is provided. The motor 5 includes:

[0050] Stainless steel casing 51;

[0051] Lower bearing housing 52;

[0052] Upper bearing housing 53;

[0053] Stator 54;

[0054] Insulating support 55;

[0055] Among them, the stator 54 and the stainless steel housing 51 are interference fit;

[0056] The stainless steel outer shell 51 is sealed to the lower bearing seat 52 and the upper bearing seat 53 at both ends, and the insulating support 55 is located between the stator 54 and the lower bearing seat 52.

[0057] In this embodiment, the stator 54 and / or the stainless steel housing 51 are insulated.

[0058] In this embodiment, the output shaft of the motor 5 and the shaft of the impeller 8 are the same integrally formed shaft.

[0059] In this embodiment, the insulating support 55 is annular in shape. The insulating support 55 has a uniform thickness.

[0060] In this embodiment, an annular groove 541 is formed at the lower edge of the stator 54, and the insulating support member 55 is located in the annular groove 541.

[0061] In this embodiment, the cross-section of the annular groove 541 is a right trapezoid with a larger bottom and a smaller top.

[0062] In this embodiment, the stainless steel outer shell 51 is generally circular.

[0063] In this embodiment, the stainless steel housing 51 includes a middle section 511, a lower section 512, and an upper section 513, with the thickness of the middle section 511 being greater than that of the lower section 512 and the upper section 513. The two ends of the stainless steel housing 51 are respectively press-fitted with the lower bearing seat 52 and the upper bearing seat 53. The inner diameter of the middle section 511 of the stainless steel housing 51 is adapted to the stator 54, the inner diameter of the lower section 512 of the stainless steel housing 51 is adapted to the first protrusion 521 of the lower bearing seat 52, and the inner diameter of the upper section 513 of the stainless steel housing 51 is adapted to the second protrusion of the upper bearing seat 53.

[0064] In this embodiment, the stainless steel outer shell 51 is symmetrical from top to bottom, so there is no need to distinguish between the top and bottom directions during assembly.

[0065] In this embodiment, the stainless steel outer shell 51 is formed by stamping.

[0066] In this embodiment, two first sealing rings are provided axially distributed between the stainless steel outer shell 51 and the lower bearing seat 52; two second sealing rings are provided axially distributed between the stainless steel outer shell 51 and the upper bearing seat 53. All four sealing rings are identical.

[0067] In this embodiment, the lower bearing seat 52 has a first protrusion 521, the first protrusion 521 has a first sealing groove, the first sealing ring is located in the first sealing groove, and the lower end of the insulating support member 55 abuts against the first protrusion 521; the upper bearing seat 53 has a second protrusion, the second protrusion has a second sealing groove, and the second sealing ring is located in the second sealing groove.

[0068] In this embodiment, the lower bearing housing 52 and the upper bearing housing 53 are fixedly connected by a threaded connection assembly 9. There are multiple sets of threaded connection assemblies 9, which are evenly distributed circumferentially.

[0069] In this embodiment, the lower bearing housing 52 is provided with a lower bearing; the upper bearing housing 53 is provided with an upper bearing.

[0070] In this embodiment, the pump body 3 is provided with a water outlet, which is vertically arranged. The lower end of the pump body 3 forms the water outlet, which is located in the mesh cover 2. The base 1 and the mesh cover 2 filter large particles.

[0071] In this embodiment, the vertical submersible pump is a centrifugal pump.

[0072] The beneficial effects of the vertical submersible pump in Embodiment 1 of this utility model are as follows: the motor 5 adopts a stainless steel shell 51, which has many advantages such as light weight and stable quality compared with the cast shell; an insulating support 55 is provided between the stator 54 and the lower bearing seat 52 below it to reliably support the stator 54 and prevent the stator 54 from falling relative to the stainless steel shell 51 (usually due to the effect of gravity, the stator 54 will not rise relative to the stainless steel shell 51), and at the same time, to ensure insulation between the stator 54 and the lower bearing seat 52; the stainless steel shell 51 and the lower bearing seat 52 and the upper bearing seat 53 are sealed by two sealing rings respectively.

[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A vertical submersible pump, characterized in that: The vertical submersible pump includes a motor (5), and the motor (5) includes: Stainless steel casing (51); Lower bearing housing (52); Upper bearing housing (53); Stator (54); Insulating support (55); The stator (54) and the stainless steel housing (51) are interference fit; The stainless steel outer shell (51) is sealed to the lower bearing housing (52) and the upper bearing housing (53) at both ends, and the insulating support (55) is located between the stator (54) and the lower bearing housing (52).

2. A vertical submersible pump according to claim 1, characterized in that: The insulating support (55) is in the shape of a ring.

3. A vertical submersible pump according to claim 2, characterized in that: An annular groove (541) is formed at the lower edge of the stator (54), and the insulating support (55) is located in the annular groove (541).

4. A vertical submersible pump according to claim 3, characterized in that: The cross-section of the annular groove (541) is a right trapezoid with a larger bottom and a smaller top.

5. A vertical submersible pump according to any one of claims 1 to 4, characterized in that: The stainless steel casing (51) is generally circular.

6. A vertical submersible pump according to claim 5, characterized in that: The stainless steel casing (51) includes a middle section (511), a lower section (512), and an upper section (513), wherein the thickness of the middle section (511) is greater than that of the lower section (512) and the upper section (513); and / or, The stainless steel casing (51) is symmetrical from top to bottom; and / or, The stainless steel casing (51) is formed by stamping.

7. A vertical submersible pump according to any one of claims 1 to 4, characterized in that: Two first sealing rings are provided axially between the stainless steel housing (51) and the lower bearing housing (52); two second sealing rings are provided axially between the stainless steel housing (51) and the upper bearing housing (53).

8. A vertical submersible pump according to claim 7, characterized in that: The lower bearing housing (52) has a first protrusion (521), the first protrusion (521) has a first sealing groove, the first sealing ring is located in the first sealing groove, and the lower end of the insulating support (55) abuts against the first protrusion (521); the upper bearing housing (53) has a second protrusion, the second protrusion has a second sealing groove, and the second sealing ring is located in the second sealing groove.

9. A vertical submersible pump according to claim 1, characterized in that: The lower bearing housing (52) and the upper bearing housing (53) are fixedly connected by a threaded connection assembly (9).

10. A vertical submersible pump according to claim 1, characterized in that: A lower bearing is provided in the lower bearing housing (52); The upper bearing is provided in the upper bearing housing (53); the vertical submersible pump includes, from bottom to top, a base (1), a screen (2), a pump body (3), a cylinder cover (4), a motor (5) and a handle (7). The pump body (3) and the cylinder cover (4) form a conveying chamber, and an impeller (8) is provided in the conveying chamber.

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