Direct drive motor for vacuum pump

Abstract

The invention discloses a direct-drive motor for a vacuum pump. The direct-drive motor comprises a motor shell; the motor comprises a motor shell and a mounting shell connected with the motor shell, the mounting shell comprises an inner ring body and a mounting plate body, the inner ring body is arranged in the motor shell, the mounting plate body is located outside the motor shell and connected with the motor shell, and an assembly hole is formed in the mounting plate body; the stator part is arranged in the inner ring body; the rotor part is arranged in the stator part in a linkage manner; the coupling assembly comprises a transmission shaft body, a transmission shaft sleeve, a transmission shaft sleeve and a transmission shaft sleeve, wherein the transmission shaft body and the rotor part are coaxially arranged; the positioning ring body is arranged on the transmission shaft body in a sleeving manner, and the positioning ring body is attached to the end face of the rotor part; the locking ring body is arranged on the transmission shaft body in a sleeving manner, and the locking ring body and the positioning ring body are arranged in an attached manner. The rotor can be directly assembled on a vacuum pump shell for use, matching transmission can be achieved by inserting the rotor shaft, and meanwhile water-cooling heat dissipation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pump accessories, and in particular to a direct-drive motor for a vacuum pump. Background Art

[0002] A vacuum pump is a device that uses mechanical, physical, chemical or physicochemical methods to evacuate air from a container to obtain a vacuum. Common ones include screw vacuum pumps, Roots vacuum pumps, etc., which require a motor to drive the screw or rotor to rotate. For example, patent number CN117052675A discloses a screw vacuum pump and a method of using the same. The motor needs to be connected through intermediate parts such as couplings, which results in energy loss. Direct-drive motors on the market are not suitable for vacuum pump products. Therefore, it is necessary to develop a direct-drive motor suitable for vacuum pumps. Summary of the invention

[0003] The present invention aims to avoid the deficiencies of the prior art and provides a direct-drive motor suitable for a vacuum pump.

[0004] The present invention solves the technical problem by adopting the following technical solution: A direct drive motor for a vacuum pump, comprising:

[0005] a motor casing; and

[0006] a mounting housing connected to the motor housing, the mounting housing comprising an inner ring body and a mounting plate body, the inner ring body being arranged in the motor housing, the mounting plate body being located outside the motor housing and connected to the motor housing, and the mounting plate body being provided with an assembly hole; and

[0007] a stator portion disposed inside the inner ring body; and

[0008] a rotor portion disposed in linkage with the stator portion; and

[0009] A coupling assembly disposed on the rotor portion, the coupling assembly comprising:

[0010] A transmission shaft body coaxially arranged with the rotor portion;

[0011] A positioning ring body sleeved on the transmission shaft body, wherein the positioning ring body is arranged in close contact with the end surface of the rotor part;

[0012] A locking ring body is sleeved on the transmission shaft body, and the locking ring body is fitted with the positioning ring body.

[0013] In several embodiments, the motor housing includes a main housing and a sub-housing arranged on one side of the main housing, the main housing is used to accommodate the installation housing, the sub-housing is used to accommodate electrical components, the main housing is communicated with the sub-housing, and the sub-housing is detachably provided with multiple end covers.

[0014] In several embodiments, a water inlet pipe and a water outlet pipe are arranged in parallel on one side of the main shell, the water inlet pipe is used to input water, and the water outlet pipe is used to lead out water. There is a gap between the inner wall of the main shell and the outer wall of the mounting shell, and the gap is for water to flow.

[0015] In several embodiments, the transmission shaft body includes a main shaft body, a limiting plate is provided at one end of the main shaft body, the outer diameter of the limiting plate is larger than the outer diameter of the main shaft body, and the side curved surface of the main shaft body is provided with multiple grooves, which extend along the axial direction of the main shaft body.

[0016] In several embodiments, the positioning ring body includes a main ring body, a plurality of positioning pieces are arranged on the outside of the main ring body, and the positioning pieces can be deformed, and at least one snap-fit ​​piece is arranged on the inside of the main ring body, and the snap-fit ​​piece is inserted into the groove.

[0017] In several embodiments, a plurality of slots are provided on the side curved surface of the locking ring body, the positions of the slots correspond to the positions of the grooves, and the engaging piece is covered by the locking ring body.

[0018] In several embodiments, the positioning sheet can be folded over to be inserted into the card slot.

[0019] The effective effects of the present invention are:

[0020] The invention can be directly assembled on a vacuum pump housing for use, and matching transmission can be achieved by inserting a rotor shaft.

[0021] The present invention facilitates assembly and fixation with the rotor part through the structure of the connecting assembly, thereby achieving a stable positioning connection.

[0022] The present invention provides a water cooling function and achieves a heat dissipation effect by arranging a water inlet pipeline and a water outlet pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0024] Figure 1 The structure of the direct drive motor for the vacuum pump in this embodiment is schematically shown;

[0025] Figure 2 Schematically shows Figure 1 A structure in another perspective;

[0026] Figure 3 Schematically shows Figure 1 Partial explosion of structures;

[0027] Figure 4The cross-sectional structure of the direct-drive motor for the vacuum pump in this embodiment is schematically shown;

[0028] Figure 5 The enlarged structure of the coupling assembly in this embodiment is schematically shown;

[0029] Figure 6 Schematically shows Figure 5 Partial explosion of structures;

[0030] Figure 7 Schematically shows Figure 1 The enlarged structure of the motor housing;

[0031] Figure 8 Schematically shows Figure 7 Structure from another perspective. DETAILED DESCRIPTION

[0032] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 8 As shown, the direct-drive motor for the vacuum pump in this embodiment is mainly composed of a motor housing 10, a mounting shell 20 connected to the motor housing 10, a stator part 30 arranged inside the mounting shell 20, a rotor part 40 linked to the stator part 30, and a connecting assembly 50 arranged on the rotor part 40. The rotor part 30 cooperates with the connecting assembly 50 to be directly assembled and connected with the rotor shaft in the vacuum pump to realize direct drive transmission.

[0035] Specifically, the motor housing 10 includes a main housing 11 and a sub-housing 12 arranged on one side of the main housing 11. The main housing 11 is used to accommodate the installation housing 20, and the sub-housing 12 is used to accommodate electrical components. The main housing 11 is communicated with the sub-housing 12, and the sub-housing 12 is detachably provided with a plurality of end covers 121.

[0036] Among them, a water inlet pipe 61 and a water outlet pipe 62 are arranged in parallel on one side of the main shell 11. The water inlet pipe 61 is used to input water, and the water outlet pipe 62 is used to lead out water. There is a gap between the inner wall of the main shell 11 and the outer wall of the installation shell 20, and the gap is for water to flow, thereby forming water cooling.

[0037] In addition, the mounting shell 20 includes an inner ring body 21 and a mounting plate body 22, wherein the inner ring body 21 is arranged inside the motor housing 10, and the mounting plate body 22 is located outside the motor housing 10 and connected to the motor housing 10, and an eight-shaped assembly hole 221 is arranged on the mounting plate body 22, and the assembly hole 211 is for the rotor shaft to be inserted, and one end of the mounting plate body 22 is fixedly connected to the main housing 11 by bolts, and the other end can be assembled to the housing of the vacuum pump and fixedly connected by bolts.

[0038] In addition, the connecting assembly 50 includes a transmission shaft body 51 coaxially arranged with the rotor part 40, a positioning ring body 52 sleeved on the transmission shaft body 51, and a locking ring body 53 sleeved on the transmission shaft body 51. The positioning ring body 52 is arranged to fit the end face of the rotor part 40, and the locking ring body 53 is arranged to fit the positioning ring body 52.

[0039] The transmission shaft 51 comprises a main shaft 511 , one end of which is provided with a limiting plate 512 , the outer diameter of which is larger than the outer diameter of the main shaft 511 , and the side curved surface of the main shaft 511 is provided with a plurality of grooves 513 , which extend along the axial direction of the main shaft 511 .

[0040] The positioning ring body 52 comprises a main ring body 521 , a plurality of positioning pieces 522 are arranged on the outer side of the main ring body 521 , and the positioning pieces 522 can be deformed. At least one snap-fit ​​piece 523 is arranged on the inner side of the main ring body 521 , and the snap-fit ​​piece 523 is inserted into the groove 513 .

[0041] Among them, a plurality of slots 531 are arranged on the side curved surface of the locking ring body 53, and the positions of the slots 531 correspond to the positions of the grooves 513. The snap-fitting piece 523 is covered by the locking ring body 53, and the positioning piece 522 can be folded to be inserted into the slots 531 to achieve positioning connection.

[0042] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language (such as "for example") provided herein are merely to better illustrate the present invention and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be construed as indicating any essential factors for practicing the present invention that are not claimed.

[0043] The present invention describes preferred embodiments, including the best mode of carrying out the invention known to the inventors. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that the skilled artisan may use such variations as appropriate, and the inventors indicate that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all modifications encompassed by the spirit and scope of the invention as defined by the claims. Furthermore, unless otherwise stated or clearly contradictory in context, the present invention includes any of the above-described factors and all possible variations thereof.

Claims

1. A direct drive motor for a vacuum pump, characterized in that: include: a motor housing (10); and a mounting housing (20) connected to the motor housing (10), the mounting housing (20) comprising an inner ring (21) and a mounting plate (22), the inner ring (21) being arranged inside the motor housing (10), the mounting plate (22) being located outside the motor housing (10) and connected to the motor housing (10), and the mounting plate (22) being provided with an assembly hole (221); and a stator portion (30) disposed inside the inner ring body (21); and a rotor portion (40) arranged in linkage with the stator portion (30); and A coupling assembly (50) disposed on the rotor portion (40), the coupling assembly (50) comprising: A transmission shaft (51) coaxially arranged with the rotor portion (40); A positioning ring body (52) sleeved on the transmission shaft body (51), wherein the positioning ring body (52) is arranged in close contact with the end surface of the rotor part (40); A locking ring body (53) is sleeved on the transmission shaft body (51), and the locking ring body (53) is arranged in close contact with the positioning ring body (52).

2. A direct drive motor for a vacuum pump according to claim 1, characterized in that: The motor housing (10) comprises a main housing (11) and a secondary housing (12) arranged on one side of the main housing (11); the main housing (11) is used to accommodate a mounting housing (20); the secondary housing (12) is used to accommodate electrical components; the main housing (11) is connected to the secondary housing (12); and a plurality of end covers (121) are detachably arranged on the secondary housing (12).

3. A direct drive motor for a vacuum pump according to claim 1, characterized in that: A water inlet pipe (61) and a water outlet pipe (62) are arranged in parallel on one side of the main shell (11); the water inlet pipe (61) is used to input water, and the water outlet pipe (62) is used to lead out water; there is a gap between the inner wall of the main shell (11) and the outer wall of the mounting shell (20), and the gap allows water to flow.

4. A direct drive motor for a vacuum pump according to claim 1, characterized in that: The transmission shaft body (51) comprises a main shaft body (511), one end of the main shaft body (511) is provided with a limit plate (512), the outer diameter of the limit plate (512) is larger than the outer diameter of the main shaft body (511), and the side curved surface of the main shaft body (511) is provided with a plurality of grooves (513), and the grooves (513) extend along the axial direction of the main shaft body (511).

5. A direct drive motor for a vacuum pump according to claim 4, characterized in that: The positioning ring body (52) comprises a main ring body (521), a plurality of positioning pieces (522) are arranged on the outside of the main ring body (521), and the positioning pieces (522) can be deformed, and at least one snap-fit ​​piece (523) is arranged on the inside of the main ring body (521), and the snap-fit ​​piece (523) is inserted into the groove (513).

6. A direct drive motor for a vacuum pump according to claim 5, characterized in that: A plurality of slots (531) are provided on the side curved surface of the locking ring body (53); the positions of the slots (531) correspond to the positions of the grooves (513); and the engaging piece (523) is covered by the locking ring body (53).

7. A direct drive motor for a vacuum pump according to claim 6, characterized in that: The positioning piece (522) can be folded over and inserted into the card slot (531).

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