CN215058165U

CN215058165U - Novel oil injection screw rod all-in-one machine

Info

Publication number: CN215058165U
Application number: CN202120613378.4U
Authority: CN
Inventors: 王立光; 邬剑波; 周武彬
Original assignee: Ningbo Baosi Energy Equipment Co Ltd
Current assignee: Ningbo Baosi Energy Equipment Co Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-12-07
Anticipated expiration: 2031-03-25

Abstract

The utility model provides a novel oil spout screw rod all-in-one, this structure is including setting up in oil spout screw rod host computer (1) of one end, permanent-magnet machine (2) that are located the other end of being connected with oil spout screw rod host computer (1), the output axle (1.1) of motor rotor (2.1) and oil spout screw rod host computer (1) be connected, realize the compression with positive rotor (1.2) rotation that drives screw rod host computer (1) to the air, its characterized in that: the output shaft (1.1) is provided with a sealing part (3) for forming gap sealing, the inner side wall of the permanent magnet motor (2) is provided with a glue pouring seal (4), and the glue pouring seal (4) wraps a motor stator (2.2) of the permanent magnet motor (2). The structure of this application has that sealing performance is good, guarantees also can normal operating under the inside oily condition of motor, can not cause the advantage of influence to motor stator because of the oil leak.

Description

Novel oil injection screw rod all-in-one machine

Technical Field

The application relates to oil injection screw rod all-in-one machine technical field, and concretely relates to novel oil injection screw rod all-in-one machine.

Background

At present, the all-in-one machine of the screw rod host and the motor is more and more popular in the market. As shown in the attached drawing 1, the all-in-one machine with the structure comprises an oil injection screw rod host 1 arranged at one end and a permanent magnet motor 2 connected with the oil injection screw rod host 1 and positioned at the other end, wherein a motor rotor of the permanent magnet motor 2 is connected with an output shaft 1.1 of the oil injection screw rod host 1, so that a male rotor of the screw rod host 1 is driven to rotate to compress air; the oil injection screw rod all-in-one machine with the structure needs to well seal the position between the output shaft of the main machine and the motor, because the screw rod main machine is always in an oil injection working state, if the sealing is not good, oil can enter the permanent magnet motor, and the operation of the motor is influenced; at present, the main machine output shaft seal of the all-in-one machine with the structure is mainly ensured by a framework seal a, as shown in figure 1, the framework seal a is arranged at a gap position between a male rotor 1.2 and the main machine, because the motor rotor is heavier (the rotor of the motor and the male rotor of a screw rod are arranged on the motor rotor), and the influence of factors such as concentricity is added, the damage and oil leakage of the framework seal can be easily caused in the long-term operation and running process, and once the oil leakage condition occurs, the oil can directly leak into the motor due to the structure of the integrated design of the main machine and the motor, and the influence is caused on the stator and the rotor of the motor; moreover, the replacement of the framework seal is troublesome, the whole equipment needs to be disassembled and assembled, and great trouble is caused to after-sale work.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art's the aforesaid, provides a sealing performance good, ensures also can normal operating under the inside oily condition of motor, can not cause the novel oil spout screw rod all-in-one of influence to motor stator because of the oil leak.

In order to solve the technical problem, the technical scheme adopted by the application is as follows: a novel oil injection screw integrated machine comprises an oil injection screw host arranged at one end and a permanent magnet motor connected with the oil injection screw host and positioned at the other end, wherein a motor rotor of the permanent magnet motor is connected with an output shaft of the oil injection screw host so as to drive a male rotor of the oil injection screw host to rotate to compress air; the output shaft is provided with a sealing component for forming gap sealing, the inner side wall of the permanent magnet motor is provided with a glue pouring seal, and the glue pouring seal wraps the stator of the permanent magnet motor.

By adopting the structure, the traditional skeleton seal positioned at the output shaft position of the main engine is cancelled, and the gap seal is adopted for replacement, so that the phenomena of damage and oil leakage of the skeleton seal caused by long-term operation and running of the rotor can be avoided; the clearance seals in long-term operation, the adjacent structure of rotation process is noncontacting, consequently, reduce the friction between the structure, but in long-term high-speed operation process from the inevitable trace or a small amount of oil infiltration to the motor in the clearance position, because be provided with the encapsulating on the motor inside wall and seal, the encapsulating is sealed forms the parcel to permanent magnet machine's stator, form totally enclosed encapsulating in the motor like this, guarantee also can normal operating under the inside condition of having oil of motor, can not cause the influence to motor stator because of the oil leak, encapsulated being provided with of encapsulating simultaneously does benefit to the inside whole heat dissipation of motor.

Preferably, the glue pouring seal extends along the inner side wall of the permanent magnet motor shaft side and along the inner side wall of the oil injection screw main body on the opposite side. Adopt above-mentioned structure, can guarantee the inside wall of the abundant cladding motor of encapsulating, realize the sealed mode of totally enclosed encapsulating to realize better protection to motor inside, also can normal operating under the inside oily condition of motor, can not lead to the fact the influence to motor stator because of the oil leak, be favorable to the inside whole heat dissipation of motor simultaneously.

Further preferably, the thickness of the glue pouring seal extending along the inner side wall of the permanent magnet motor shaft side is not less than the radial thickness of the motor stator; by adopting the structure, the radial full sealing of the stator of the permanent magnet motor can be ensured by glue pouring sealing, and the interference of oil leakage to the stator is prevented.

Further preferably, the thickness of the glue pouring seal extending along the inner side wall on the opposite side of the screw main machine is smaller than that of the glue pouring seal extending along the inner side wall on the permanent magnet motor shaft side; by adopting the structure, the using amount of the sealant can be effectively saved, and meanwhile, the comprehensive sealing effect on the interior of the motor can be realized.

Preferably, the bottom of the permanent magnet motor is provided with an oil return hole; by adopting the structure, even if a small amount of oil leaks in the motor, the oil can be collected to the oil return hole and then discharged from the oil return hole, the internal space of the permanent magnet motor is purified, and the oil leakage is not reserved.

Preferably, the discharge end of the oil return hole is communicated with an air inlet of the screw main machine; adopt this structure, even there is a small amount of oil leakage inside the motor, also can get back to screw rod host computer inside, recycle through this hole at the negative pressure state of host computer department of admitting air, simultaneously can also be timely with the oil leak removal in the motor.

Furthermore, the oil return hole is a through hole extending along the radial direction of the side wall of the permanent magnet motor; by adopting the structure, the oil leakage can be discharged more quickly and timely.

Furthermore, a one-way valve is arranged on a pipeline, wherein the discharge end of the oil return hole is communicated with an air inlet of the screw main machine, and the running direction of the one-way valve is from the oil return hole to the air inlet of the screw main machine; adopt above-mentioned structure, set up the check valve on the oil gallery of this application and the host computer connecting tube, guarantee that oil is only from motor to host computer, the oil in the host computer can not reverse the entering motor, guarantees the timely clearance of the oil impregnate in the motor.

Drawings

Fig. 1 is a schematic structural view of a cross-sectional view of a conventional oil injection screw integrated machine adopting framework sealing.

Fig. 2 is a detailed enlarged structural view of the sealing position of the framework in fig. 1.

Fig. 3 is a schematic structural diagram of the oil injection screw integrated machine of the present application.

Fig. 4 is a schematic structural view of a cross-sectional view of the oil injection screw all-in-one machine of the application.

As shown in the attached drawings: 1. the oil injection screw rod main machine comprises an oil injection screw rod main machine 1.1, an output shaft 1.2, a male rotor 2, a permanent magnet motor 2.1, a motor rotor 2.2, a motor stator (a permanent magnet motor stator) 3, a sealing part 4, a glue pouring seal 5 and an oil return hole.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present invention;

further, it is to be noted that: when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by way of the intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The encapsulating that this application mentioned forms the parcel to permanent-magnet machine stator 2.2, and the parcel can be whole parcel or partial parcel, and in this embodiment, the encapsulating is partial parcel to permanent-magnet machine stator's parcel, and is specific to realize the parcel at the both ends of permanent-magnet machine stator shaft side direction, and permanent-magnet machine stator does not wrap up with the adjacent face of electric motor rotor radial direction to effectively maintain the effort between the stator and the rotor.

The motor that the embodiment part of this application relates to can refer to the permanent-magnet machine of this application, and the host computer can refer to the oil spout screw host computer of this application.

As shown in fig. 3-4, the novel oil injection screw integrated machine of the present application comprises an oil injection screw host 1 arranged at one end, and a permanent magnet motor 2 connected with the oil injection screw host 1 and located at the other end, wherein a motor rotor 2.1 of the permanent magnet motor 2 is connected with an output shaft 1.1 of the oil injection screw host 1 to drive a male rotor 1.2 of the oil injection screw host 1 to rotate to compress air; a sealing component 3 for forming gap sealing is arranged on the output shaft 1.1, a glue pouring seal 4 is arranged on the inner side wall of the permanent magnet motor 2, and the glue pouring seal 4 wraps the permanent magnet motor stator 2.2; the main innovation point of the oil injection screw rod main machine is that the structures of the oil injection screw rod main machine and the permanent magnet motor are the structures adopted by the industry at present, and the structures of the parts are not modified, and the main innovation point of the oil injection screw rod main machine is that the glue pouring sealing structure and the gap sealing structure are respectively arranged in the permanent magnet motor 2 and the position where the sealing between the output shaft 1.1 of the oil injection screw rod main machine 1 and the motor is required to be realized, so that the existing framework sealing structure is replaced; the permanent magnet motor comprises a shell, a stator positioned on the shell, and a rotor positioned at the central axial position, wherein the rotor is connected with an output shaft (namely an output shaft) of a male rotor of an oil injection screw host, so that the male rotor is driven to rotate through the rotation of the rotor, and then mutual rotation meshing of screws in the whole screw host and air compression are realized.

By adopting the structure, the traditional skeleton seal positioned at the output shaft position of the main engine is cancelled, and the gap seal is adopted for replacement, so that the phenomena of damage and oil leakage of the skeleton seal caused by long-term operation and running of the rotor can be avoided; the gap seal is in long-term operation, adjacent structural members are not in contact in the rotating process, so that friction among the structural members is reduced, but trace or a small amount of oil inevitably seeps into the motor from the gap position in the long-term high-speed operation process, and the inner side wall of the motor is provided with the glue pouring seal which wraps the stator of the permanent magnet motor, so that totally-enclosed glue pouring is formed in the motor, the normal operation can be ensured under the condition that oil exists in the motor, the influence on the motor stator due to oil leakage is avoided, and meanwhile, the arrangement of the glue pouring seal is beneficial to the integral heat dissipation in the motor; this application is considered to the inside sealed problem of motor for the first time, through wholeness encapsulating operation on the inner wall of motor shaft side direction and the inner wall of one end, has realized the sealing treatment of inner wall shaft side and one end wall, the effectual contact probability that reduces stator and oil leak, improvement motor operating stability.

As shown in fig. 3 and 4, the potting compound 4 described in this application extends along the inner sidewall (i.e., the motor circumferential sidewall) of the axial side of the permanent magnet motor 2 and along the inner sidewall of the opposite side of the injection screw main body 1 (i.e., the potting compound provided in this application covers the position from the axial sidewall of the motor to the top end, which is the top end opposite to the injection screw main body, and the sealing of the connection end with the injection screw main body is realized by using a sealing member, i.e., a gap sealing structure). By adopting the structure, the inner side wall of the motor can be fully coated by glue filling and sealing, and a fully-closed glue filling sealing mode is realized, so that the interior of the motor is well protected, the motor can normally run under the condition that oil exists in the motor, the influence on a motor stator due to oil leakage is avoided, and the integral heat dissipation in the motor is facilitated; in addition, set up the encapsulating on permanent-magnet machine's axle side and one end inner wall and seal, and adopt clearance seal with oil spout screw rod host computer link, encapsulating sealing construction is convenient like this, and clearance seal's the position that sets up does not receive holistic encapsulating sealed dragging, then more do benefit to the connection convenient assembling between permanent-magnet machine and the oil spout host computer.

As shown in fig. 4, the thickness of the potting compound 4 extending along the inner sidewall of the permanent magnet motor 2 on the shaft side is not less than the radial thickness of the motor stator 2.2; the radial thickness of the stator 2.2 is ideally equal to that of the motor stator, and as can be seen from the attached drawings, the glue filling sealing at the position of the motor stator 2.2 is formed by sealing from the two ends of the stator, and the side surface parts of the stator, which are close to the rotor, are sealed by glue filling, so that the working interface of the stator and the rotor in the conventional permanent magnet motor is still maintained; by adopting the structure, the radial full sealing of the stator of the permanent magnet motor can be ensured by glue pouring sealing, and the interference of oil leakage to the stator is prevented.

As shown in fig. 4, the thickness of the glue-pouring seal extending along the inner side wall of the permanent magnet motor on the opposite side of the oil injection screw main body 1 is smaller than that of the glue-pouring seal extending along the inner side wall of the permanent magnet motor on the shaft side; by adopting the structure, the using amount of the sealant can be effectively saved, and meanwhile, the comprehensive sealing effect on the interior of the motor can be realized.

As shown in fig. 4, an oil return hole 5 is formed in the bottom of the permanent magnet motor 2, and a discharge end of the oil return hole 5 can be communicated with an air inlet of an oil injection screw main unit 1 (the oil injection screw main unit is an oil injection screw air compressor, and is provided with an air inlet and an air outlet, so that atmospheric air enters, and after compression, air pressurization is realized; adopt this structure, this application is the first time from the inside condition that has the oil leak of motor, how the angle of effectual discharge oil leak considers, set up the oil gallery on the casing of the bottom position at the motor, and communicate the oil gallery with the air inlet of oil spout screw rod host computer, even there is a small amount of oil leakage like this in the motor, also can remove the oil leak in the motor through this oil gallery is timely at the negative pressure state of host computer department of admitting air, can also get back to inside the screw rod host computer simultaneously, recycle.

As shown in fig. 4, the oil return hole 5 is a through hole extending along the radial direction of the side wall (housing) of the permanent magnet motor 2; by adopting the structure, the leaked oil can be discharged more quickly and timely; the discharge end of concrete this application's oil gallery 5 is linked together with the air inlet of screw rod host computer 1, can adopt the pipeline mode to communicate, is provided with the check valve in addition on this pipeline, the traffic direction of medium be from the oil gallery end to the air inlet end direction of screw rod host computer in the check valve to prevent oil or gas in the oil spout screw rod host computer from getting into to the motor, cause the influence to the motor operation.

The oil return holes can be single or multiple, and are specifically adjusted according to the actual oil leakage condition and working condition requirement in the running process without limiting the specific number; the specific size structure of the oil return hole can be adjusted according to working conditions; the sealing element of the application can be prepared by adopting sealing materials commonly used in the industry, such as rubber and the like.

Claims

1. The utility model provides a novel oil spout screw rod all-in-one, this structure is including setting up in oil spout screw rod host computer (1) of one end, permanent-magnet machine (2) that are located the other end of being connected with oil spout screw rod host computer (1), the output axle (1.1) of motor rotor (2.1) and oil spout screw rod host computer (1) be connected, realize the compression with positive rotor (1.2) rotation that drives screw rod host computer (1) to the air, its characterized in that: the output shaft (1.1) is provided with a sealing part (3) for forming gap sealing, the inner side wall of the permanent magnet motor (2) is provided with a glue pouring seal (4), and the glue pouring seal (4) wraps a motor stator (2.2) of the permanent magnet motor (2).

2. The novel oil-injection screw all-in-one machine is characterized in that: the glue pouring seal (4) extends along the inner side wall of the shaft side of the permanent magnet motor (2) and along the inner side wall of the side opposite to the oil injection screw main machine (1).

3. The novel oil-injection screw all-in-one machine is characterized in that: the thickness of the glue pouring seal (4) extending along the inner side wall of the shaft side of the permanent magnet motor (2) is not less than the radial thickness of the motor stator (2.2).

4. The novel oil-injection screw all-in-one machine is characterized in that: the thickness of the glue pouring seal (4) extending along the inner side wall on the opposite side of the oil injection screw main machine (1) is smaller than that of the glue pouring seal (4) extending along the inner side wall on the shaft side of the permanent magnet motor (2).

5. The novel oil-injection screw all-in-one machine is characterized in that: and an oil return hole (5) is formed in the bottom of the permanent magnet motor (2).

6. The novel oil-injection screw all-in-one machine is characterized in that: the discharge end of the oil return hole (5) is communicated with the air inlet of the screw main machine (1).

7. A novel oil injection screw integrated machine as claimed in any one of claims 5-5, characterized in that: the oil return hole (5) is a through hole which radially extends along the side wall of the permanent magnet motor (2).

8. The novel oil-injection screw all-in-one machine is characterized in that: and a one-way valve is arranged on a pipeline, which is communicated with the air inlet of the screw main machine (1) at the discharge end of the oil return hole (5), and the running direction of the one-way valve is from the oil return hole to the air inlet of the screw main machine.