Support structure in high-speed deep-well pump

Abstract

The utility model relates to the technical field of deep-well pump accessories, in particular to a support structure in a high-speed deep-well pump, which comprises a central sleeve, a cylinder and a connecting rib connected between the central sleeve and the cylinder. A water inlet is formed in the lower end of the cylinder, the inner wall of the cylinder and the inner wall of the water inlet are connected through a slope face, and the slope face inclines inwards and downwards in the radial direction. The slope surface is designed at the water inlet, and compared with a right-angle structure, the slope surface can increase the thickness of the position, so that the thickness of the position can be increased, the use strength can be improved, the inclination angle can be utilized to prevent sand and stones from depositing, the sand and stones can smoothly flow away, the phenomena of abrasion, breakage and the like of the middle bracket caused by high-speed rotation of the sand and stones are avoided, and the overall service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of deep well pump accessories technology, and in particular to a support structure for a high-speed deep well pump. Background Technology

[0002] The most distinctive feature of a deep well pump is that it integrates the electric motor and the water pump into one unit. It is a type of pump that is immersed in an underground well to draw and transport water, and it is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment.

[0003] The intermediate support structure is a crucial component in deep well pumps, serving to fix the impeller assembly and support and guide the pump shaft. Traditional intermediate support structures generally consist of a cylindrical body and a central sleeve located at the center of the cylindrical body's axis. The cylindrical body and the central sleeve are connected by three or four straight connecting ribs. The lower end of the cylindrical body is the water inlet. Rubber and ceramic bushings are installed inside the central sleeve to support the pump shaft. In this structure, the junction between the water inlet and the cylindrical body is usually set at a right angle. Since the water pumped by deep well pumps often contains silt, after a period of operation, sand accumulates at the right angle. As the impeller rotates, the water flow rotates accordingly, causing the sand to rotate repeatedly at the right angle, repeatedly rubbing against this location. Over time, this area is worn through, especially in high-speed pumps, where this drawback is more pronounced and severely affects the service life of the deep well pump. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide a support structure for a high-speed deep well pump, which reduces sand deposition and wear, has a long service life, and meets the needs of high-speed pump use.

[0005] The technical solution of this utility model is:

[0006] The present invention discloses a support structure for a high-speed deep well pump, comprising a central sleeve, a cylindrical body, and a connecting rib connecting the two, wherein the lower end of the cylindrical body forms a water inlet, characterized in that: the inner wall of the cylindrical body and the inner wall of the water inlet are connected by a sloping surface, the sloping surface being radially inward and downward.

[0007] In the above structure, this utility model designs a sloping surface at the water inlet position to replace the traditional right-angled plane. By using the sloping water inlet, the thickness is increased while reducing sand deposition, reducing wear, and extending service life.

[0008] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the angle between the inclined surface and the inner wall of the cylindrical body is 110°-120°. By reasonably designing the angle of the inclined surface, it helps the sand to flow out quickly and smoothly, and improves the sand-prevention effect.

[0009] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the inclined surface smoothly transitions with the inner wall of the cylindrical body and the inner wall of the inlet, ensuring that sand does not accumulate.

[0010] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the number of connecting ribs is 6 and they are evenly distributed around the central sleeve. Reasonably increasing the number of connecting ribs and arranging them evenly improves their load-bearing strength and stress uniformity, and prevents deformation.

[0011] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the end face of the connecting rib away from the inlet includes a first plane and a second plane arranged sequentially in a radially outward direction. The first plane is horizontal, and the second plane is radially outward and upward inclined, with the angle between the first plane and the second plane being 110°-120°. The design of the connecting rib with its bent and inclined upper end face strengthens the connection and support function, increases strength, and improves overall integrity and stability.

[0012] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the end face of the connecting rib near the water inlet is radially outward and downward, and the angle between it and the horizontal plane is 155°-165°. The lower end face of the connecting rib adopts an inclined outward expansion design, which also plays a role in enhancing the support.

[0013] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, a wear-resistant rubber bushing is concentrically fitted inside the central sleeve. Three anti-rotation protrusions are evenly distributed along the circumferential direction on the inner wall of the central sleeve, and three anti-rotation grooves are correspondingly provided on the outer wall of the wear-resistant rubber bushing. The anti-rotation protrusions are engaged in the anti-rotation grooves so that the central sleeve and the wear-resistant rubber bushing are circumferentially anti-rotated.

[0014] Furthermore, in the support structure of the high-speed deep well pump described in this utility model, the inner wall of the wear-resistant rubber bushing is recessed with multiple cooling grooves along the circumferential direction for water flow. The design of the cooling grooves can ensure that when the pump shaft and ceramic bushing are installed later, a certain water-cooling gap is left between the ceramic bushing and the rubber bushing, thereby improving the cooling effect and extending the service life.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model replaces the right-angle design with a sloping surface design between the water inlet and the cylindrical body. This not only increases the thickness at this location and improves the strength of the application, but also reduces the probability of sand and gravel deposition by using the inclined angle, which facilitates the smooth flow of sand and gravel and avoids wear and breakage of the support structure caused by sand and gravel under high-speed rotation, thus extending the overall service life.

[0017] 2. This utility model uses a design of six evenly distributed connecting ribs with bent and inclined structures to increase the supporting force and strength, effectively prevent deformation of the middle support, and fully meet the operating requirements of high-speed pumps.

[0018] 3. This utility model has three sets of raised groove anti-rotation structures evenly distributed on the contact surface between the center sleeve and the wear-resistant rubber bushing. With the help of triangular stability, it increases the anti-rotation performance and makes it easy to align the position. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the disassembled structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the present invention after the ceramic bushing has been installed. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings:

[0022] Reference Figure 1 , Figure 2 As shown in the figure, the support structure of a high-speed deep well pump described in this embodiment includes a concentrically fitted central sleeve 1, a cylindrical body 2, and a connecting rib 3 connecting the two. The lower end of the cylindrical body 2 forms an inlet 4. The inner wall of the cylindrical body 2 and the inner wall of the inlet 4 are connected by a ramp 5. The ramp 5 slopes radially inward and downward, and the angle between the ramp 5 and the inner wall of the cylindrical body 2 is 110°-120°. The ramp 5 smoothly transitions between the ramp 5 and the inner walls of the cylindrical body 2 and the inlet 4. This structure, through the design of the ramp 5, improves the inlet 4 into a thickened, angled inlet. Compared to the traditional right-angle structure, this not only increases the thickness and improves wear resistance, but also prevents sand from accumulating, reducing wear.

[0023] To improve the overall structural strength, this embodiment also optimizes and improves the connecting ribs 3. Specifically, there are six connecting ribs 3 evenly distributed around the central sleeve 1. The end face of the connecting rib 3 away from the inlet 4 includes a first plane 3a and a second plane 3b arranged sequentially in a radially outward direction. The first plane 3a is horizontal, and the second plane 3b is radially outward and upward, with an angle of 110°-120° between the first plane 3a and the second plane 3b. The end face of the connecting rib 3 near the inlet 4 is radially outward and downward, with an angle of 155°-165° with the horizontal plane. The above-mentioned connecting rib 3 structure can effectively increase strength and reduce deformation.

[0024] A wear-resistant rubber bushing 6 is concentrically fitted inside the central sleeve 1. Three anti-rotation protrusions 9 are evenly distributed along the circumferential direction on the inner wall of the central sleeve 1. Three corresponding anti-rotation grooves 7 are provided on the outer wall of the wear-resistant rubber bushing 6. The anti-rotation protrusions 9 are engaged within the anti-rotation grooves 7, ensuring a circumferential anti-rotation fit between the central sleeve 1 and the wear-resistant rubber bushing 6. This embodiment features three evenly distributed anti-rotation protrusions 9 on the central sleeve 1. This design not only leverages the high stability of a triangle, but also enhances anti-rotation performance compared to traditional structures relying on only two anti-rotation fits, making it more suitable for the operating conditions of high-speed pumps. Furthermore, it avoids the problem of inconsistent positional accuracy caused by an excessive number of protrusions, making it easier to align the positional accuracy and reducing the difficulty of machining and assembly.

[0025] In addition, the wear-resistant rubber bushing 6 described in this embodiment has multiple cooling grooves 8 recessed along the circumferential direction on its inner wall for water flow. Combined with... Figure 2 In this embodiment, during installation and use, a wear-resistant rubber bushing 6 is fixedly installed inside the central sleeve 1, and then a ceramic bushing 10 is installed inside it. The ceramic bushing 10 is fixed to the pump shaft and can be rotatably fitted with the wear-resistant rubber bushing 6. The water cooling effect is enhanced by the design of the cooling groove 8 between the two to avoid overheating damage and extend service life.

[0026] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model are still covered by the claims of this utility model.

Claims

1. A support structure for a high-speed deep well pump, comprising a concentrically fitted central sleeve, a cylindrical body, and a connecting rib connecting the two, wherein the lower end of the cylindrical body forms a water inlet, characterized in that: The inner wall of the cylinder is connected to the inner wall of the inlet by a sloping surface, which is radially inward and downward.

2. The support structure in the high-speed deep well pump according to claim 1, characterized in that: The angle between the inclined surface and the inner wall of the cylinder is 110°-120°.

3. The support structure in the high-speed deep well pump according to claim 1, characterized in that: The sloped surface smoothly transitions with the inner wall of the cylinder and the inner wall of the inlet.

4. The support structure in the high-speed deep well pump according to claim 1, characterized in that: The number of connecting ribs is 6, and they are evenly distributed around the central sleeve.

5. The support structure in the high-speed deep well pump according to claim 1, characterized in that: The end face of the connecting rib away from the water inlet includes a first plane and a second plane arranged sequentially in a radially outward direction. The first plane is horizontal, and the second plane is radially outward and upward, with the angle between the first plane and the second plane being 110°-120°.

6. The support structure in a high-speed deep well pump according to claim 1 or 5, characterized in that: The end face of the connecting rib near the water inlet is radially outward and downward, and the angle between it and the horizontal plane is 155°-165°.

7. The support structure in the high-speed deep well pump according to claim 1, characterized in that: The central sleeve is concentrically fitted with a wear-resistant rubber bushing. The inner wall of the central sleeve has three anti-rotation protrusions evenly distributed along the circumferential direction. The outer wall of the wear-resistant rubber bushing is provided with three corresponding anti-rotation grooves. The anti-rotation protrusions are engaged in the anti-rotation grooves to make the central sleeve and the wear-resistant rubber bushing circumferentially anti-rotate.

8. The support structure in the high-speed deep well pump according to claim 7, characterized in that: The wear-resistant rubber bushing has multiple cooling grooves recessed along the circumferential direction on its inner wall for water flow.

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