Water pump stator fixing structure

Abstract

The utility model discloses a water pump stator fixing structure, which belongs to the technical field of water pumps and comprises a bottom support, three equal-angle second positioning sleeves are fixedly mounted at the bottom end of the bottom support, three equal-angle first positioning sleeves are fixedly mounted at the top end of the bottom support, and three equal-angle arc-shaped sheets are fixedly mounted at the top end of the bottom support. A plurality of equal-angle limiting strips are fixedly installed at the top end of the circumferential inner wall of the bottom support, a positioning assembly is arranged in the middle of the top ends of the three arc-shaped pieces, and a rectangular opening is formed in the middle of the three arc-shaped pieces. When the stator is inserted between the bottom support and the movable sleeve, the movable sleeve is tightly attached to the outer wall of the stator through adjustment of the positioning assembly, then the stator is tightly fixed, the bottom end of the movable sleeve is fixedly provided with a plurality of plugging blocks with the same angle, and arc-shaped elastic pieces of the plugging blocks are changed into concave shapes from inward convex shapes under the action of elastic bodies. Therefore, the rubber sleeve of the plugging block protrudes, and the effect that the outer side of the circumference of the stator is tightly jacked by the protrusion on the outer side of the plugging block so as to reinforce fixation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a water pump stator fixing structure. Background Art

[0002] A water pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals, etc. It can also transport liquids, gas mixtures and liquids containing suspended solids. The water pump contains a rotor and a stator. During the assembly process of the water pump, the water pump housing and the stator need to be tightly and fixedly connected to prevent the stator from loosening radially and axially during operation, which may affect and damage the product.

[0003] After searching, the patent announcement number CN113555982A discloses a patent named "A stator fixing structure for an electronic water pump". The technical problem to be solved is that the gluing fixation has the disadvantages of complex process and high cost, and the interference fit will produce residual material resulting in poor cleanliness. The bottom and top ends of the stator are axially limited by the lower limit member arranged on the casing and the upper limit member arranged on the isolation sleeve, respectively, so as to realize the axial connection and fixation between the casing and the stator; at the same time, the circumferential and radial positioning connection of the stator, the isolation sleeve and the casing is realized by the plug-in fit of the positioning rib on the isolation sleeve and the anti-dislocation slot on the stator, and the plug-in fit of the positioning boss on the casing and the positioning groove on the isolation sleeve; but there are still the following disadvantages that need to be solved: the stator cannot be effectively fixed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a water pump stator fixing structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water pump stator fixing structure comprises a base, wherein three second positioning sleeves with equal angles are fixedly installed on the bottom end of the base, three first positioning sleeves with equal angles are fixedly installed on the top end of the base, three arc-shaped pieces with equal angles are fixedly installed on the top end of the base, a plurality of limit strips with equal angles are fixedly installed on the top end of the circular inner wall of the base, a positioning assembly is arranged in the middle of the top ends of the three arc-shaped pieces, a rectangular opening is opened in the middle of the three arc-shaped pieces, and a movable sleeve is slidably arranged between the three rectangular openings, and a plurality of plugging blocks with equal angles are fixedly installed on the bottom end of the movable sleeve.

[0007] Preferably, the three first positioning sleeves and the three second positioning sleeves are arranged alternately, and the second positioning sleeves in each column are located on the same straight line as the arc-shaped piece.

[0008] Preferably, the positioning assembly includes a guide sleeve, and the outer side of the guide sleeve is fixedly connected to the inner wall of the top end of the arc-shaped piece, a threaded positioning rod is rotatably installed inside the guide sleeve, a nut is fixedly connected to the top end of the threaded positioning rod, and a pressing platform is fixedly connected to the bottom end of the threaded positioning rod.

[0009] Preferably, the press platform is in the shape of a truncated cone which is narrow at the top and wide at the bottom, and the outer wall of the press platform is provided with a wear-resistant coating.

[0010] Preferably, three rectangular blocks with equal angles are fixedly provided on the circumferential outer wall of the movable sleeve, and the rectangular blocks in each row are slidably installed inside the rectangular opening.

[0011] Preferably, the plugging block is composed of an arc-shaped elastic sheet, a rubber sleeve and an elastomer, and the elastomer is located between the arc-shaped elastic sheet and the rubber sleeve, the arc-shaped elastic sheet is located inside the circumference of the moving sleeve, and the rubber sleeve is located outside the circumference of the moving sleeve.

[0012] Preferably, the outer wall of the arc-shaped elastic sheet and the outer wall of the rubber sleeve are both provided with a wear-resistant coating.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model proposes a water pump stator fixing structure, wherein three arc-shaped pieces with equal angles are fixedly installed on the top of a base, and a movable sleeve is slidably arranged between rectangular openings opened in the middle of the three arc-shaped pieces, and a positioning assembly is arranged in the middle of the tops of the three arc-shaped pieces. When the stator is inserted between the base and the movable sleeve, the movable sleeve is adjusted to be close to the outer wall of the stator through the positioning assembly, thereby tightly fixing the stator, and a plurality of plugging blocks with equal angles are fixedly installed on the bottom end of the movable sleeve, and the arc-shaped elastic piece of the plugging block is transformed from convex to concave under the action of the elastic body, thereby making the rubber sleeve of the plugging block bulge, so that the outer side of the plugging block bulges to tighten the outer side of the stator circumference and strengthen the fixation.

[0015] 2. The utility model proposes a water pump stator fixing structure, which includes a guide sleeve through a positioning component, and the outer side of the guide sleeve is fixedly connected to the inner wall of the top end of the arc-shaped sheet, a threaded positioning rod is rotatably installed inside the guide sleeve, a nut is fixedly connected to the top end of the threaded positioning rod, and a truncated cone-shaped pressing platform which is narrow at the top and wide at the bottom is fixedly connected to the bottom end of the threaded positioning rod. The threaded positioning rod can be moved up or down along the guide sleeve until three pressing platforms with equal angles fix the stator between the base and the movable sleeve, and the pressing platform, the outer wall of the arc-shaped elastic sheet and the outer wall of the rubber sleeve are all provided with a wear-resistant coating to reduce their wear, thereby reducing the influence on the fastening accuracy of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a water pump stator fixing structure proposed by the utility model;

[0017] Figure 2This is a schematic diagram of the bottom structure of a water pump stator fixing structure proposed by the utility model;

[0018] Figure 3 This is a schematic structural diagram of a protrusion of an arc-shaped elastic piece of a water pump stator fixing structure proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of the concave arc-shaped elastic piece of the water pump stator fixing structure.

[0020] In the figure: 1 base, 2 first positioning sleeve, 3 second positioning sleeve, 4 arc-shaped piece, 5 rectangular opening, 6 limit strip, 7 movable sleeve, 8 guide sleeve, 9 threaded positioning rod, 10 pressing table, 11 nut, 12 rectangular block, 13 plugging block, 14 arc-shaped elastic piece, 15 rubber sleeve, 16 elastic body. DETAILED DESCRIPTION

[0021] Reference Figure 1-4 A water pump stator fixing structure includes a base 1, three second positioning sleeves 3 with equal angles are fixedly installed on the bottom end of the base 1, three first positioning sleeves 2 with equal angles are fixedly installed on the top of the base 1, three arc-shaped pieces 4 with equal angles are fixedly installed on the top of the base 1, a plurality of limit strips 6 with equal angles are fixedly installed on the top of the circumferential inner wall of the base 1, a positioning component is arranged in the middle of the top of the three arc-shaped pieces 4, a rectangular opening 5 is opened in the middle of the three arc-shaped pieces 4, and a movable sleeve 7 is slidably arranged between the three rectangular openings 5, and a plurality of plugging blocks 13 with equal angles are fixedly installed on the bottom of the movable sleeve 7.

[0022] In the utility model, three first positioning sleeves 2 and three second positioning sleeves 3 are staggered, so that the bottom bracket 1 is evenly stressed after being fixed by bolts, and the second positioning sleeves 3 and the arc-shaped pieces 4 in each row are located on the same straight line;

[0023] The positioning assembly includes a guide sleeve 8, and the outer side of the guide sleeve 8 is fixedly connected to the inner wall of the top end of the arc-shaped piece 4, a threaded positioning rod 9 is rotatably installed inside the guide sleeve 8, a nut 11 is fixedly connected to the top end of the threaded positioning rod 9, and a pressing platform 10 is fixedly connected to the bottom end of the threaded positioning rod 9;

[0024] The press platform 10 is in the shape of a truncated cone that is narrow at the top and wide at the bottom, and the outer wall of the press platform 10 is provided with a wear-resistant coating;

[0025] The outer wall of the movable sleeve 7 is fixedly provided with three rectangular blocks 12 with equal angles, and each row of rectangular blocks 12 is slidably installed inside the rectangular opening 5;

[0026] The plugging block 13 is composed of an arc-shaped elastic sheet 14, a rubber sleeve 15 and an elastic body 16, and the elastic body 16 is located between the arc-shaped elastic sheet 14 and the rubber sleeve 15, the arc-shaped elastic sheet 14 is located on the inner side of the circumference of the moving sleeve 7, and the rubber sleeve 15 is located on the outer side of the circumference of the moving sleeve 7;

[0027] The outer wall of the arc-shaped elastic sheet 14 and the outer wall of the rubber sleeve 15 are both provided with a wear-resistant coating.

[0028] Working principle: three arc-shaped pieces 4 with equal angles are fixedly installed on the top of the base 1, and a moving sleeve 7 is slidably arranged between the rectangular openings 5 ​​opened in the middle of the three arc-shaped pieces 4, and a positioning component is arranged in the middle of the top of the three arc-shaped pieces 4. When the stator is inserted between the base 1 and the moving sleeve 7, the moving sleeve 7 is adjusted by the positioning component to make it close to the outer wall of the stator, thereby tightly fixing the stator, and a plurality of plugging blocks 13 with equal angles are fixedly installed on the bottom of the moving sleeve 7. The arc-shaped elastic piece 14 of the plugging block 13 changes from convex to concave under the action of the elastic body 16, thereby making the rubber sleeve 15 of the plugging block 13 bulge, so that the outer side of the plugging block 13 bulges to tighten the outer side of the stator circumference and strengthen the fixation effect;

[0029] The positioning component includes a guide sleeve 8, and the outer side of the guide sleeve 8 is fixedly connected to the inner wall of the top end of the arc-shaped piece 4. A threaded positioning rod 9 is rotatably installed inside the guide sleeve 8. A nut 11 is fixedly connected to the top of the threaded positioning rod 9. A truncated cone-shaped pressing platform 10 with a narrow top and a wide bottom is fixedly connected to the bottom of the threaded positioning rod 9. The threaded positioning rod 9 is rotated to move up or down along the guide sleeve 8 until three pressing platforms 10 at equal angles fix the stator between the base 1 and the movable sleeve 7. The pressing platform 10, the outer wall of the arc-shaped elastic piece 14 and the outer wall of the rubber sleeve 15 are all provided with a wear-resistant coating to reduce their wear, thereby reducing the impact on the fastening accuracy of the stator.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water pump stator fixing structure, comprising a base (1), characterized in that: The bottom end of the base (1) is fixedly mounted with three second positioning sleeves (3) at equal angles, the top end of the base (1) is fixedly mounted with three first positioning sleeves (2) at equal angles, the top end of the base (1) is fixedly mounted with three arc-shaped pieces (4) at equal angles, the top end of the circumferential inner wall of the base (1) is fixedly mounted with a plurality of limit strips (6) at equal angles, a positioning assembly is arranged in the middle of the top ends of the three arc-shaped pieces (4), a rectangular opening (5) is provided in the middle of the three arc-shaped pieces (4), and a movable sleeve (7) is slidably arranged between the three rectangular openings (5), and a plurality of plugging blocks (13) at equal angles are fixedly mounted on the bottom end of the movable sleeve (7).

2. A water pump stator fixing structure according to claim 1, characterized in that: The three first positioning sleeves (2) and the three second positioning sleeves (3) are arranged in a staggered manner, and the second positioning sleeves (3) and the arc-shaped pieces (4) in each row are located on the same straight line.

3. A water pump stator fixing structure according to claim 1, characterized in that: The positioning assembly comprises a guide sleeve (8), and the outer side of the guide sleeve (8) is fixedly connected to the inner wall of the top end of the arc-shaped sheet (4), a threaded positioning rod (9) is rotatably installed inside the guide sleeve (8), a nut (11) is fixedly connected to the top end of the threaded positioning rod (9), and a pressing platform (10) is fixedly connected to the bottom end of the threaded positioning rod (9).

4. A water pump stator fixing structure according to claim 3, characterized in that: The pressing platform (10) is in the shape of a truncated cone which is narrow at the top and wide at the bottom, and the outer wall of the pressing platform (10) is provided with a wear-resistant coating.

5. A water pump stator fixing structure according to claim 1, characterized in that: The outer circumferential wall of the movable sleeve (7) is fixedly provided with three rectangular blocks (12) with equal angles, and each row of rectangular blocks (12) is slidably installed inside the rectangular opening (5).

6. A water pump stator fixing structure according to claim 1, characterized in that: The plugging block (13) is composed of an arc-shaped elastic sheet (14), a rubber sleeve (15) and an elastic body (16), wherein the elastic body (16) is located between the arc-shaped elastic sheet (14) and the rubber sleeve (15), the arc-shaped elastic sheet (14) is located on the inner side of the circumference of the moving sleeve (7), and the rubber sleeve (15) is located on the outer side of the circumference of the moving sleeve (7).

7. A water pump stator fixing structure according to claim 6, characterized in that: The outer wall of the arc-shaped elastic sheet (14) and the outer wall of the rubber sleeve (15) are both provided with a wear-resistant coating.

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