A motor for a pump body

Abstract

The utility model discloses a pump body motor, include: casing, fixed installation has stator in casing inside, and is equipped with the rotating rotor subassembly, is assembled with the end cover at casing end part, forms the complete protection structure, realizes the first seal by the cooperation of the annular groove of casing lateral wall and the main seal ring installed outside, completes the second seal through the embedding of the auxiliary seal ring of end cover top surface into the corresponding ring groove of casing, is connected to the flow guide duct of main seal ring side direction, and one end of the duct extends to the annular gap between seal ring and casing, and the valve is installed in the middle part of the duct, reduces the stagnation of corrosive medium, prolongs the service life of sealing element significantly, and through the arc surface on main baffle, the liquid is guided, further improves the waterproof effect in the casing, reduces the condition that the liquid enters to the casing inside.

Description

Technical Field

[0001] This utility model relates to the technical field of yarn tensioners for warp knitting machines, and in particular to a motor for a pump body. Background Technology

[0002] Traditional pump motors generally adopt a basic structure of "stator-rotor-end cover-sealing ring," and their sealing performance depends on the static compression of a single sealing ring with the end cover. This design has three technical defects: First, axial sealing is achieved only by pressing the end cover against the housing flange, which is prone to failure due to vibration after long-term operation; second, existing sealing rings lack a flow guiding structure, and liquid cannot be discharged in a directional manner after seepage, accelerating the corrosion of the sealing components; third, the baffle system is mostly of the planar contact type, which is difficult to adapt to the dynamic deformation caused by rotor sway.

[0003] Recent improvements, such as encapsulated single-bearing motors, simplify the structure but sacrifice sealing reliability; while electronic water pumps using double sealing rings face the problem of high assembly complexity. For example, the limiting groove stator mounting method shown in patent publication number CN222582165U improves maintainability but does not solve the problem of multi-directional fluid penetration. More advanced axial flux motors use a split roller bearing structure, but are costly and unsuitable for high-pressure pump environments. Utility Model Content

[0004] The purpose of this invention is to provide a motor for a pump body.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pump motor, comprising: a housing, a stator fixedly installed inside the housing, and a rotating rotor assembly.

[0006] End caps are fitted at the ends of the housing to form a complete protective structure;

[0007] The first seal is achieved by the annular groove on the top of the end cap engaging with the main sealing ring installed on the outside of the housing;

[0008] The second seal is achieved by embedding the auxiliary sealing ring on the top surface of the end cap into the corresponding annular groove of the housing;

[0009] A flow guide pipe is connected to the side of the main sealing ring. One end of the pipe extends to the annular gap between the sealing ring and the housing, and a valve is installed in the middle of the pipe.

[0010] Preferably, a main baffle is fixedly connected to the end cap, the side wall of which is in contact with the side wall of the main sealing ring, and a secondary baffle is fixedly connected to the housing, one end of which can be in contact with the top surface of the end cap.

[0011] Preferably, an L-shaped first baffle is fixedly connected to the end cap, one end of which can be in contact with the side wall of the main sealing ring, and a second baffle is fixedly connected to the side wall of the housing, which can be in contact with the top surface of the end cap.

[0012] Preferably, one side of the main baffle is provided with an arc surface.

[0013] Preferably, the top surface of the end cap is provided with an inclined surface.

[0014] Preferably, both the main sealing ring and the auxiliary sealing ring are fixedly connected with sealing rings, the sealing ring on the main sealing ring can fit into the annular groove, and the sealing ring on the auxiliary sealing ring can fit into the annular groove.

[0015] Preferably, a sealed bearing is fixedly connected to the center of the end cover, and the inner ring of the sealed bearing is connected to the side wall of the output shaft in the rotor assembly.

[0016] Preferably, the main sealing ring is internally threaded with a bolt, one end of which is threadedly connected to the inner wall of the annular groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the first sealing barrier is formed by the pressing of the main sealing ring and the annular groove of the shell, and the second line of defense is formed by the embedding of the auxiliary sealing ring and the end cap annular groove. The double sealing structure effectively disperses the bearing pressure of the traditional single sealing ring. The addition of the diversion pipe allows the seepage liquid to be discharged in a directional manner, reducing the retention of corrosive media and significantly extending the life of the seal. Furthermore, the arc surface on the main baffle guides the liquid, further improving the waterproof effect inside the shell and reducing the possibility of liquid entering the shell. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the shell in one embodiment of the present invention.

[0020] Reference numerals: 1. Housing; 2. Stator; 3. Rotor assembly; 4. End cover; 5. Annular groove; 6. Main sealing ring; 7. Auxiliary sealing ring; 8. Annular groove; 9. Guide pipe; 10. Valve; 11. Main baffle; 12. Secondary baffle; 13. First baffle; 14. Second baffle; 15. Arc surface; 16. Inclined surface; 17. Sealing ring; 18. Sealing bearing; 19. Bolt. Detailed Implementation

[0021] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0022] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0023] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0024] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figures 1 to 2 Example 1:

[0026] A pump motor includes: a housing 1, a stator 2 fixedly installed inside the housing 1, and a rotating rotor assembly 3, wherein the rotor assembly 3 is a rotor, and the rotor is rotatably connected inside the housing 1;

[0027] An end cap 4 is fitted at the end of the housing 1 to form a complete protective structure. The first seal is achieved by the annular groove 5 on the top of the end cap 4 cooperating with the main sealing ring 6 installed on the outside of the housing 1. The second seal is achieved by the auxiliary sealing ring 7 on the top surface of the end cap 4 being embedded in the corresponding annular groove 8 of the housing 1. The main sealing ring 6 and the auxiliary sealing ring 7 constitute a second layer of protection between the housing 1 and the end cap 4. This can both disperse the bearing pressure of the single sealing ring 17 and achieve waterproofing of the housing 1, further improving the waterproofing effect of the housing 1. The auxiliary sealing ring 7 is annular.

[0028] A flow guide pipe 9 is connected to the side of the main sealing ring 6. One end of the pipe extends to the annular gap between the sealing ring and the housing 1. A valve 10 is installed in the middle of the pipe. The flow guide pipe 9 is mainly used to discharge water in the annular gap. When the valve 10 is opened, the flow guide channel can discharge water.

[0029] Specifically, both the main sealing ring 6 and the auxiliary sealing ring 7 are fixedly connected with sealing rings 17. The sealing ring 17 on the main sealing ring 6 can fit into the annular groove 5, and the sealing ring 17 on the auxiliary sealing ring 7 can fit into the annular groove 8.

[0030] Specifically, a sealed bearing 18 is fixedly connected to the center of the circumference of the end cover 4. The inner ring of the sealed bearing 18 is connected to the side wall of the output shaft in the rotor assembly 3. By connecting the sealed bearing 18 to the side wall of the rotor output shaft, the rotation point between the rotor and the end cover 4 can be sealed, reducing the amount of water entering the housing 1 through the rotation point between the rotor and the end cover 4.

[0031] Specifically, the main sealing ring 6 is internally threaded with a bolt 19. One end of the bolt 19 is threaded to the inner wall of the annular groove 5. The bolt 19 is mainly used to fix the main sealing ring 6 in the annular groove 5, thereby indirectly fixing the housing 1 and the end cover 4.

[0032] Example 2:

[0033] A main baffle 11 is fixedly connected to the end cap 4. The side wall of the main baffle 11 is in contact with the side wall of the main sealing ring 6. A secondary baffle 12 is fixedly connected to the housing 1. One end of the secondary baffle 12 can be in contact with the top surface of the end cap 4. A first baffle 13 with an L-shape is fixedly connected to the end cap 4. One end of the first baffle 13 can be in contact with the side wall of the main sealing ring 6. A second baffle 14 is fixedly connected to the side wall of the housing 1. The second baffle 14 can be in contact with the top surface of the end cap 4. By staggering the main baffle 11, secondary baffle 12, first baffle 13 and second baffle 14, water can be further blocked, reducing the possibility of water entering the interior of the housing 1.

[0034] Specifically, one side of the main baffle 11 is provided with an arc surface 15, which is mainly used to guide water and reduce the possibility of water entering the housing 1. The top surface of the end cover 4 is provided with an inclined surface 16, which is also used to guide water and reduce the possibility of water entering the housing 1.

[0035] The principle of this invention: When the motor is running, the rotor rotates under the magnetic field generated by the stator 2, transmitting mechanical energy through the output shaft. The housing 1 and the end cover 4 adopt a double-layer sealing structure: the main sealing ring 6 is fixed in the annular groove 5 of the housing 1 by bolts 19, and its sealing ring 17 fits tightly with the groove to form the first waterproof barrier; the auxiliary sealing ring 7 is embedded in the annular groove 8 of the end cover 4, and the sealing ring 17 is pressed against the groove wall to form the second layer of protection. The two sealing rings form a stepped sealing surface, effectively dispersing the water pressure load.

[0036] When external liquid comes into contact with the sealed area, the staggered arrangement of the main baffle 11 and the secondary baffle 12 first changes the direction of water flow. The L-shaped first baffle 13 cooperates with the side wall of the housing 1 to form a labyrinthine barrier, while the second baffle 14 further prevents the liquid from penetrating laterally. The arc surface 15 of the main baffle 11 and the inclined surface 16 of the end cap 4 work together to guide the liquid to the outside for discharge. If the liquid breaks through the baffle system, the annular gap between the main sealing ring 6 and the housing 1 will temporarily trap the seeping liquid. At this time, the accumulated liquid can be discharged by opening the guide pipe 9 valve 10 to prevent pressure accumulation from damaging the seal.

[0037] The rotor shaft and end cover 4 are connected by a sealed bearing 18. The inner ring of the bearing tightly hugs the shaft to form a rotating sealing surface, preventing liquid from seeping in axially.

[0038] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A motor for a pump body, comprising: The housing (1) has a stator (2) fixedly installed inside it, and a rotating rotor assembly (3) is provided. Its characteristic is that... An end cap (4) is fitted at the end of the housing (1) to form a complete protective structure; The first seal is achieved by the annular groove (5) on the top of the end cap (4) cooperating with the main sealing ring (6) installed on the outside of the housing (1); The second seal is achieved by the auxiliary sealing ring (7) on the top surface of the end cap (4) being embedded into the corresponding annular groove (8) of the housing (1); A flow guide pipe (9) is connected to the side of the main sealing ring (6), one end of which extends to the annular gap between the sealing ring and the housing (1), and a valve (10) is installed in the middle of the pipe.

2. The pump motor according to claim 1, characterized in that, A main baffle (11) is fixedly connected to the end cap (4), and the side wall of the main baffle (11) is in contact with the side wall of the main sealing ring (6). A secondary baffle (12) is fixedly connected to the housing (1), and one end of the secondary baffle (12) can be in contact with the top surface of the end cap (4).

3. A pump motor according to claim 2, characterized in that, A first baffle (13) in an L-shape is fixedly connected to the end cap (4). One end of the first baffle (13) can be attached to the side wall of the main sealing ring (6). A second baffle (14) is fixedly connected to the side wall of the housing (1). The second baffle (14) can be attached to the top surface of the end cap (4).

4. A pump motor according to claim 3, characterized in that, One side of the main baffle (11) is provided with an arc surface (15).

5. A pump motor according to claim 2, characterized in that, The top surface of the end cap (4) is provided with a slope (16).

6. A pump motor according to claim 1, characterized in that, Both the main sealing ring (6) and the auxiliary sealing ring (7) are fixedly connected with sealing rings (17). The sealing ring (17) on the main sealing ring (6) can fit into the annular groove (5), and the sealing ring (17) on the auxiliary sealing ring (7) can fit into the annular groove (8).

7. A pump motor according to claim 1, characterized in that, A sealed bearing (18) is fixed at the center of the circumference of the end cap (4), and the inner ring of the sealed bearing (18) is connected to the side wall of the output shaft in the rotor assembly (3).

8. A pump motor according to claim 6, characterized in that, The main sealing ring (6) is internally threaded with a bolt (19), one end of which is threaded to the inner wall of the annular groove (5).

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