Plastic package permanent magnet rotor structure for pump

Abstract

The utility model belongs to the technical field of rotor structures, and particularly relates to a plastic package permanent magnet rotor structure for a pump. The rotating shaft comprises a rotating shaft, a first alloy shaft and a second alloy shaft are respectively sleeved outside the middle part of the rotating shaft, a first plastic package and a second plastic package are respectively sleeved outside the first alloy shaft and the second alloy shaft, through hole parts are arranged in the first plastic package and the second plastic package, and clamping piece blocks are fixedly connected on the inner walls of the through hole parts. A first plastic package and a second plastic package are arranged on the first alloy shaft, clamping piece blocks are arranged on the first plastic package and the second alloy shaft, clamping groove parts are arranged on the side faces of the first alloy shaft and the second alloy shaft, the clamping groove parts and the clamping piece blocks are alternately matched, and meanwhile ferrites are arranged in the first plastic package and the second plastic package. The ferrite magnet ring is more conveniently assembled on the rotor shaft by adopting a splicing mode, so that the length of the magnet ring is increased, the production difficulty of the long magnet ring is reduced, and the die cost is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotor structures and relates to a plastic-sealed permanent magnet rotor structure for a pump. Background Art

[0002] The motor rotor is also a rotating component in the motor. The motor consists of two parts: the rotor and the stator. It is a device used to convert electrical energy into mechanical energy and vice versa. Motor rotors are divided into motor rotors and generator rotors. Existing plastic-encapsulated permanent magnet rotor structures are manufactured entirely from a mold, with the outer shell being a single ring. This makes it difficult to assemble the ferrite magnet ring onto the rotor shaft. Furthermore, the magnet ring is relatively short, making the production of longer magnet rings more difficult and increasing mold costs. Therefore, to address these issues, a plastic-encapsulated permanent magnet rotor structure for pumps was proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a plastic-sealed permanent magnet rotor structure for a pump in order to solve the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A plastic-encapsulated permanent magnet rotor structure for a pump includes a rotating shaft, wherein a first alloy shaft and a second alloy shaft are respectively sleeved on both sides of the middle portion of the rotating shaft, and the first alloy shaft and the second alloy shaft are the same size; the first alloy shaft is outer-circuited with a first plastic seal, and a clamping block is provided inside the first plastic seal; the second alloy shaft is outer-circuited with a second plastic seal, and a clamping block is provided inside the second plastic seal, and the clamping blocks are inserted into the side surfaces of the first alloy shaft and the second alloy shaft; stop blocks are provided in both the first plastic seal and the second plastic seal, and the stop blocks are respectively placed on the inner sides of the first alloy shaft and the second alloy shaft; a circle of ferrite is provided in the first plastic seal and the second plastic seal.

[0006] In the above-mentioned plastic-encapsulated permanent magnet rotor structure for a pump, the middle part of the rotating shaft is respectively sleeved with a first alloy shaft and a second alloy shaft for fixed connection, and there is a distance between the first alloy shaft and the second alloy shaft. The side surfaces of the first alloy shaft and the second alloy shaft are both provided with a plurality of slots, and the plurality of slots equally divide the side surfaces of the first alloy shaft and the second alloy shaft.

[0007] In the above-mentioned plastic-encapsulated permanent magnet rotor structure for a pump, through-hole portions are provided in both the first plastic encapsulation and the second plastic encapsulation, and the inner side of the first plastic encapsulation is tightly fitted with the inner side of the second plastic encapsulation. At the same time, the through-hole portions on both sides are on the same center line and are connected.

[0008] In the above-mentioned plastic-encapsulated permanent magnet rotor structure for a pump, first step portions are provided at both ends of the middle portion of the first plastic encapsulation, and the through hole portion is located in the middle of the first step portion; second step portions are provided at both ends of the middle portion of the second plastic encapsulation, and the through hole portion is located in the middle of the second step portion.

[0009] In the above-mentioned plastic-encapsulated permanent magnet rotor structure for a pump, a built-in space is opened inside the first plastic encapsulation and the second plastic encapsulation, and the inner circle of the built-in space is respectively spaced apart from the first step portion and the second step portion, and the ferrite is fixedly connected in the built-in space.

[0010] In the above-mentioned plastic-encapsulated permanent magnet rotor structure for a pump, the first step portion and the second step portion are of the same size, and the first step portion and the inner side of the second step portion fit tightly together.

[0011] In the above-mentioned plastic-sealed permanent magnet rotor structure for a pump, a plurality of clamping blocks are fixedly connected to the inner side wall of the through hole portion, and the plurality of clamping blocks equally divide the inner side wall of the through hole portion.

[0012] In the above-mentioned plastic-sealed permanent magnet rotor structure for a pump, the clamping block corresponds to the clamping slot portion, and the clamping block is inserted into the fixed connection clamping slot portion, while the first alloy shaft side surface and the second alloy shaft side surface are tightly fitted with the inner wall of the through hole portion.

[0013] In the above-mentioned plastic-sealed permanent magnet rotor structure for a pump, a plurality of blocking blocks are fixedly connected to the inner circle of the through-hole portion, and the blocking blocks equally divide the inner circle of the through-hole portion.

[0014] In the above-mentioned plastic-sealed permanent magnet rotor structure for a pump, the side surfaces of the stopper block are closely fitted with the inner sides of the first alloy shaft and the second alloy shaft.

[0015] Compared with the existing technology, the advantages of this utility model are:

[0016] The utility model is characterized in that a first alloy shaft and a second alloy shaft are respectively sleeved on the outside of the middle portion of the rotating shaft, a first plastic seal and a second plastic seal are respectively sleeved on the outside of the first alloy shaft and the second alloy shaft, a through hole portion is provided in the first plastic seal and the second plastic seal, and a clamping block is fixedly connected on the inner wall of the through hole portion, a clamping groove portion is provided on the side of the first alloy shaft and the second alloy shaft, and the clamping groove portion and the clamping block are alternately matched, and ferrite is provided in both the first plastic seal and the second plastic seal, and the first alloy shaft is divided into two parts by the first plastic seal and the first alloy shaft on one side and the second plastic seal and the second alloy shaft on the other side. The ferrite magnetic ring can be more conveniently assembled on the rotor shaft by adopting a splicing mode, thereby increasing the length of the magnetic ring, reducing the production difficulty of the long magnetic ring, and reducing the mold cost.

[0017] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the overall schematic diagrams of the utility model;

[0019] Figure 2 It is one of the overall schematic diagrams of the utility model;

[0020] Figure 3 It is a schematic side view of the entirety of the present invention;

[0021] Figure 4 It is a schematic side sectional view of the entirety of the present invention;

[0022] Figure 5 This is a schematic diagram of the first plastic sealing structure of the present utility model.

[0023] In the figure: 1. rotating shaft; 2. first plastic package; 201. first step portion; 3. second plastic package; 301. second step portion; 4. first alloy shaft; 5. second alloy shaft; 6. ferrite; 7. clamping block; 8. stopper block; 9. built-in space; 10. through hole portion; 11. slot portion. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-5 As shown, a plastic-sealed permanent magnet rotor structure for a pump includes a rotating shaft 1, a first alloy shaft 4 and a second alloy shaft 5 are respectively sleeved on both sides of the middle of the rotating shaft 1, and the first alloy shaft 4 and the second alloy shaft 5 are the same size, the first alloy shaft 4 is provided with a first plastic seal 2, and a clamping block 7 is provided inside the first plastic seal 2, the second alloy shaft 5 is provided with a second plastic seal 3, and a clamping block 7 is provided inside the second plastic seal 3, and the clamping block 7 is inserted into the side surface of the first alloy shaft 4 and the side surface of the second alloy shaft 5, the first plastic seal 2 and the second plastic seal 3 are both provided with a stopper block 8, and the stopper blocks 8 are respectively placed on the inner side of the first alloy shaft 4 and the second alloy shaft 5, and a circle of ferrite 6 is provided in the first plastic seal 2 and the second plastic seal 3.

[0026] The first alloy shaft 4 and the second alloy shaft 5 are respectively sleeved and fixedly connected through the middle of the rotating shaft 1, and there is a distance between the first alloy shaft 4 and the second alloy shaft 5. Multiple slots 11 are opened on the sides of the first alloy shaft 4 and the second alloy shaft 5, and the multiple slots 11 equally divide the side surfaces of the first alloy shaft 4 and the second alloy shaft 5.

[0027] The first alloy shaft 4 and the second alloy shaft 5 are respectively sleeved outside the middle of the rotating shaft 1. When the rotating shaft 1 rotates, the first alloy shaft 4 and the second alloy shaft 5 can rotate together, and the external connection structures of the first alloy shaft 4 and the second alloy shaft 5 can be merged.

[0028] Through holes 10 are provided in both the first plastic package 2 and the second plastic package 3 , and the inner side of the first plastic package 2 is tightly fitted with the inner side of the second plastic package 3 . The two through holes 10 are on the same center line and are connected.

[0029] Furthermore, first step portions 201 are formed at both ends of the middle of the first plastic package 2, and the through hole portion 10 is located in the middle of the first step portion 201; second step portions 301 are formed at both ends of the middle of the second plastic package 3, and the through hole portion 10 is located in the middle of the second step portion 301.

[0030] A through hole portion 10 is provided in the first step portion 201 in the first plastic package 2 and the second step portion 301 in the second plastic package 3. After the rotating shaft 1, the first alloy shaft 4 and the second alloy shaft 5 are inserted into the through hole portion 10, the first plastic package 2, the second plastic package 3 and the rotating shaft 1 are connected into one body. At the same time, the first plastic package 2 and the second plastic package 3 are combined into one body to cover the rotating shaft 1, the first alloy shaft 4 and the second alloy shaft 5.

[0031] An internal space 9 is defined by a circle inside the first plastic package 2 and the second plastic package 3 , and the inner circle of the internal space 9 is spaced apart from the first step portion 201 and the second step portion 301 . Meanwhile, a ferrite 6 is fixedly connected to the internal space 9 .

[0032] The ferrite 6 provided in both the first plastic package 2 and the second plastic package 3 is also coated on the outside of the rotating shaft 1, the first alloy shaft 4 and the second alloy shaft 5, thus forming a complete rotor.

[0033] The first step portion 201 and the second step portion 301 are of the same size, and the inner sides of the first step portion 201 and the second step portion 301 fit tightly together.

[0034] Furthermore, a plurality of clamping blocks 7 are fixedly connected to the inner side wall of the through hole portion 10 , and the plurality of clamping blocks 7 divide the inner side wall of the through hole portion 10 into equal parts.

[0035] Furthermore, the clamping block 7 corresponds to the clamping slot 11 , and the clamping block 7 is inserted into the fixed connection clamping slot 11 , while the side surfaces of the first alloy shaft 4 and the second alloy shaft 5 are tightly fitted with the inner wall of the through hole 10 .

[0036] After the clamping block 7 provided in the through hole portion 10 is inserted into the clamping groove portion 11 on the side of the first alloy shaft 4 and the second alloy shaft 5, the first plastic package 2 is fixed to the first alloy shaft 4, and the second plastic package 3 is fixed to the second alloy shaft 5 due to the alternation of the clamping block 7 and the clamping groove portion 11.

[0037] A plurality of blocking blocks 8 are fixedly connected through a circle on the inner side of the through hole portion 10 , and the blocking blocks 8 divide the circle on the inner side of the through hole portion 10 into equal parts.

[0038] Furthermore, the side surfaces of the stopper block 8 are closely fitted to the inner sides of the first alloy shaft 4 and the second alloy shaft 5 .

[0039] A stopper block 8 is provided on the inner side of the through hole portion 10 to block the first alloy shaft 4 and the second alloy shaft 5 respectively, and prevent the first alloy shaft 4 and the second alloy shaft 5 from moving inward during operation.

[0040] Working principle:

[0041] The first alloy shaft 4 and the second alloy shaft 5 are respectively sleeved on the outside of the middle part of the rotating shaft 1, so that the rotating shaft 1 will cause the first alloy shaft 4 and the second alloy shaft 5 to rotate simultaneously under the drive of the external force, and the first plastic package 2 and the second plastic package 3 are respectively sleeved on the outside of the first alloy shaft 4 and the second alloy shaft 5, and the clamping block 7 is fixedly connected to the inner wall of the through hole portion 10 provided in the first plastic package 2 and the second plastic package 3, so that the clamping block 7 and the clamping groove portion 11 provided on the side of the first alloy shaft 4 and the second alloy shaft 5 are alternately inserted and matched, so that the first alloy shaft 4 is tightly fixed to the first plastic package 2, and the second alloy shaft 5 is tightly fixed to the second plastic package 3. At the same time, the inner side of the first plastic package 2 and the inner side of the second plastic package 3 will be tightly fitted together, and the first plastic package 2 and the second plastic package 3 form a whole. At the same time, ferrite 6 is provided in the first plastic package 2 and the second plastic package 3. In this way, the rotating shaft 1, the first plastic package 2, the first alloy shaft 4, the second plastic package 3, the second alloy shaft 5 and the ferrite 6 form a complete rotor.

[0042] In addition, since the first plastic package 2 and the first alloy shaft 4 are divided into two parts and the second plastic package 3 and the second alloy shaft 5 are divided into two parts, a splicing method is formed, which reduces the cost during mold production.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0044] Although this document frequently uses terms such as 1. rotating shaft; 2. first plastic package; 201. first step; 3. second plastic package; 301. second step; 4. first alloy shaft; 5. second alloy shaft; 6. ferrite; 7. clamping block; 8. stopper block; 9. built-in space; 10. through-hole; and 11. slot, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention. Interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A plastic-encapsulated permanent magnet rotor structure for a pump, comprising a rotating shaft (1), characterized in that: The first alloy shaft (4) and the second alloy shaft (5) are respectively sleeved on both sides of the middle of the rotating shaft (1), and the first alloy shaft (4) and the second alloy shaft (5) are of the same size. The first alloy shaft (4) is provided with a first plastic seal (2) on its outer sleeve, and a clamping block (7) is provided inside the first plastic seal (2). The second alloy shaft (5) is provided with a second plastic seal (3) on its outer sleeve, and a clamping block (7) is provided inside the second plastic seal (3). At the same time, the clamping block (7) is inserted into the side surface of the first alloy shaft (4) and the side surface of the second alloy shaft (5). The first plastic seal (2) and the second plastic seal (3) are both provided with a stopper block (8), and the stopper block (8) is respectively placed on the inner side of the first alloy shaft (4) and the second alloy shaft (5). A circle of ferrite (6) is provided in the first plastic seal (2) and the second plastic seal (3).

2. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 1, characterized in that: The middle portion of the rotating shaft (1) is respectively sleeved with a first alloy shaft (4) and a second alloy shaft (5) for fixed connection, and a distance is provided between the first alloy shaft (4) and the second alloy shaft (5). The side surfaces of the first alloy shaft (4) and the second alloy shaft (5) are both provided with a plurality of slots (11), and the plurality of slots (11) equally divide the side surfaces of the first alloy shaft (4) and the second alloy shaft (5).

3. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 2, characterized in that: The first plastic seal (2) and the second plastic seal (3) are both provided with through-hole portions (10), and the inner side of the first plastic seal (2) and the inner side of the second plastic seal (3) are tightly fitted, and the through-hole portions (10) on both sides are on the same center line, and the through-hole portions (10) on both sides are connected.

4. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 3, characterized in that: The first plastic package (2) has first step portions (201) at both ends of its middle portion, and the through hole portion (10) is located in the middle of the first step portion (201); the second plastic package (3) has second step portions (301) at both ends of its middle portion, and the through hole portion (10) is located in the middle of the second step portion (301).

5. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 4, characterized in that: A built-in space (9) is provided inside the first plastic package (2) and the second plastic package (3), and the inner circle of the built-in space (9) is respectively spaced apart from the first step portion (201) and the second step portion (301), and a ferrite (6) is fixedly connected inside the built-in space (9).

6. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 5, characterized in that: The first step portion (201) and the second step portion (301) are of the same size, and the first step portion (201) and the second step portion (301) are tightly fitted to each other.

7. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 6, characterized in that: A plurality of clamping blocks (7) are fixedly connected to the inner side wall of the through hole portion (10), and the plurality of clamping blocks (7) equally divide the inner side wall of the through hole portion (10).

8. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 7, characterized in that: The clamping block (7) corresponds to the clamping slot portion (11), and the clamping block (7) is inserted into the fixedly connected clamping slot portion (11), while the side surfaces of the first alloy shaft (4) and the second alloy shaft (5) are both tightly fitted to the inner wall of the through hole portion (10).

9. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 8, characterized in that: A plurality of blocking blocks (8) are fixedly connected to the inner side of the through hole portion (10), and the blocking blocks (8) divide the inner side of the through hole portion (10) into equal parts.

10. The plastic-encapsulated permanent magnet rotor structure for a pump according to claim 9, characterized in that: The side surfaces of the stopper block (8) are respectively tightly fitted with the inner side of the first alloy shaft (4) and the inner side of the second alloy shaft (5).

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