Portable auxiliary oil suction supercharging device

Abstract

A portable auxiliary oil absorption supercharging device is characterized in that a copper rotor (1b) of a magnetic coupler (1) is located on the outer side of a packaging box body (3a) of a 3D printing integrated packaging supercharging pipeline (3) and connected with a motor through a key groove (1a), a permanent magnet rotor (1c) is located on the inner side of the packaging box body (3) and connected with a flat key (4b) of a centrifugal supercharging rotor system (4) through a key groove (1d), a main shaft (4a) is installed in a reserved shaft hole (2f) of a centrifugal rear end cover (2), and the main shaft (4a) is connected with the motor through a magnetic coupler (1). A double-row angular contact ball bearing (4e) is installed in a bearing seat (2e), a pressurizing centrifugal impeller (4f) is fixed on a main shaft (4a) and located in a pressurizing centrifugal volute (3i), a cap nut (4i) is installed at the right end of the main shaft (4a) to fix a centrifugal twisted impeller (4f), and a motor drives a magnetic coupler (1) to drive a centrifugal pressurizing rotor system (4) to rotate and work. The pressurizing main pipeline (3) is connected with a pressurizing centrifugal volute rear end cover flange (3b) of the 3D printing integrated packaging pressurizing pipeline (3) through a flange, an O-shaped sealing ring (2c) is used for sealing, and the 3D printing integrated packaging pressurizing pipeline (3) is directly connected with a hydraulic system through a pressurizing main pipeline outlet flange (3d) and a pressurizing main pipeline inlet flange (3k).

Description

Technical Field

[0001] The invention relates to an integrated boosting unit, in particular to a portable auxiliary oil suction boosting technology. Background Art

[0002] In various industrial fields such as aerospace, automobile manufacturing, and large-scale mechanical equipment, the use of pre-suction and boosting devices can greatly improve the volumetric efficiency of high-power and high-speed hydraulic pumps, increase oil absorption, and reduce flow pulsation, vibration, and noise. At present, the technology is mainly concentrated on traditional boosting devices composed of multiple independent components, including centrifugal pumps, various pipeline connection components, and complex sealing structures, such as the pre-boosting centrifugal pump series hydraulic pump developed by Lanzhou University of Technology. With the development of hydraulic technology, in hydraulic systems with constantly changing flow requirements, an integrated boosting device has emerged, such as a non-positive displacement pump combined with a boosting motor pump (CN117989145A), an internal meshing high-pressure gear pump group (CN1 17345613A), the scheme includes two gear pumps and a main pump body. The gear pumps are connected in series through the pump shaft to form a pump group to form a continuous oil supply path. The gear pumps in series form greatly increase the pump oil pressure and improve the pump oil efficiency. A multi-stage parallel internal meshing gear pump (CN203321817U) is provided with a mutually parallel and symmetrical I-stage driving shaft and a II-stage driving shaft in structure, and the I and II-stage inner and outer rotors are connected at the corresponding positions respectively; when working, the transmission shaft drives the other two driving shafts to rotate synchronously through the synchronous gear, and then the driving shaft drives the internal and external gears to mesh, and the medium is pressurized by the multi-stage gears in turn, thereby achieving an inlet and outlet pressure difference higher than that of a single-stage pump, overcoming the disadvantage of low pressure of a single-stage pump and realizing high-pressure delivery. The inventions designed in the above patents can meet the requirements of pre-suction oil pressurization of the hydraulic system and improve the volumetric efficiency of the pump.

[0003] To summarize the shortcomings of the above technologies: 1. Complex structure. Involving many parts / components, occupying a large space, not compact, and cumbersome assembly process; 2. The pressure loss is large and the efficiency improvement is limited; 3. Increased vibration and noise. The connection parts are prone to loosening due to vibration, temperature changes and other factors, affecting the smooth operation of the pump unit and making processing difficult; 4. There is a potential risk of external leakage at the sealing point, which may pollute the environment; 5. The built-in supercharging device cannot meet high-power conditions; 6. The coupling is rigidly connected. If it encounters an overload, the coupling cannot automatically cut off the power transmission, which may cause damage to the motor, reducer and other equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a portable auxiliary oil suction and pressure boosting device.

[0005] The purpose of the present invention is to solve the following problems existing in the hydraulic power unit and the booster device in the prior art: a. Insufficient oil absorption at high speed; b. Low efficiency; c. The structure of the booster device is not compact; d. Poor sealing performance; e. Low safety performance; f. The installation is complicated.

[0006] The present invention is a portable auxiliary oil suction and boosting device, comprising a magnetic coupler 1, a boosting centrifugal rear end cover 2, a 3D printed integrated packaged boosting pipeline 3, and a centrifugal boosting rotor system 4, wherein the 3D printed integrated packaged boosting pipeline 3 has a centrifugal boosting pipeline 3c, the copper rotor 1b of the magnetic coupler 1 is located outside the packaging box 3a of the 3D printed integrated packaged boosting pipeline 3, and is connected to the motor through a keyway 1a, the permanent magnet rotor 1c is located inside the packaging box 3, and is connected to the flat key 4b of the centrifugal boosting rotor system 4 through a keyway 1d, the main shaft 4a is installed in the reserved shaft hole 2f of the centrifugal rear end cover 2, the axis of the main shaft 4a is parallel to the boosting pipeline shunt pipeline 3h of the 3D printed integrated packaged boosting pipeline 3, the hole elastic retaining ring 4c is installed in the elastic retaining ring groove 2a, and the skeleton oil seal 4d is tightly attached to the hole elastic retaining ring 4c. On the right side of the retaining ring 4c, it is installed in the oil seal installation groove 2d to seal the 3D printed one-piece packaged boost pipeline 3, the double-row angular contact ball bearing 4e is installed in the bearing seat 2e, the boost centrifugal impeller 4f is fixed on the main shaft 4a, and is located in the boost centrifugal volute 3i. The cap nut 4i is installed on the right end of the main shaft 4a to fix the centrifugal twisted impeller 4f, and the magnetic coupler 1 is driven by the motor to drive the centrifugal boost rotor system 4 to rotate. Four screw holes of the same size are provided around the centrifugal rear end cover 2 for flange connection, which is connected to the boost centrifugal volute rear end cover flange 3b of the 3D printed one-piece packaged boost pipeline 3 through the flange, and is sealed with an O-ring 2c. The 3D printed one-piece packaged boost pipeline 3 is directly connected to the hydraulic system through the boost main line outlet flange 3d and the boost main line inlet flange 3k.

[0007] The invention is beneficial in that: the portable auxiliary oil suction and pressure boosting device has the following advantages: 1. High efficiency: a. The oil is pressurized and accelerated by a booster centrifugal pump. The oil is injected into the hydraulic system pipeline through the centrifugal booster pipeline. The jet flow rate and pressure are higher than the oil in the hydraulic system pipeline, which can drive the oil in the hydraulic system pipeline to accelerate and assist in boosting and filling the hydraulic system. Even at a higher speed, it can ensure that the oil is fully absorbed; b. The displacement can be adjusted in a wide range. The motor is used to drive the booster centrifugal pump. By adjusting the speed of the centrifugal pump, the energy conversion efficiency is high and the high power adaptability is good; c. Use 3D printing to build an integrated booster pipeline to achieve a seamless transition between the centrifugal booster pipeline and the main pipeline. The inner wall of the flow channel is smooth and continuous, and the 40-degree streamlined pipeline design allows the fluid to flow in an almost ideal streamlined manner without connection gaps and bosses, reducing turbulence and vortices and reducing pressure loss; 2. No leakage, long life: a. Use 3D printing to build an integrated booster pipeline, abandoning the shortcomings of traditional connection sealing, and no additional sealing components such as rubber sealing rings, metal gaskets, etc. are required, completely avoiding leakage; b. Using magnetic coupling, the equipment can be packaged without the need to reserve additional coupling holes, avoiding leakage and without direct contact with oil; c. The magnetic coupling significantly reduces the vibration transmission between devices and extends the service life of the equipment; 3. High precision and high convenience a. Using 3D printing to build an integrated packaged booster pipeline avoids assembly accuracy problems such as coaxiality and verticality caused by the assembly of many connecting parts, and reduces the complexity of manufacturing and assembly; b. No need to modify the original system on a large scale, pressurization can be achieved by standard connection method, plug and play; 4. High reliability and high applicability a. Using magnetic couplings instead of couplings does not require regular mechanical component replacement and maintenance. Couplings are usually rigid connections. If overloaded, the couplings cannot automatically cut off power transmission, causing damage to motors and other equipment. The overload protection function of the magnetic coupling can effectively reduce equipment maintenance costs and downtime, and improve the reliability of the entire system; b. 3D printing and integrated structure enable the device to maintain stable boost pressure under complex working conditions; c. The main pipeline can be directly connected to the hydraulic system for independent pressurization, which is highly versatile; d. Applicable to a variety of media, in addition to conventional hydraulic oil, it can be used for low-viscosity media such as water. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 is a cross-sectional view of the magnetic coupler of the present invention, Figure 3 This is a cross-sectional view of the supercharged centrifugal rear end cover of the present invention. Figure 4 This is a cross-sectional view of the 3D printed integrated package boost pipeline of the present invention. Figure 5It is a cross-sectional view of the centrifugal supercharged rotor system of the present invention; the reference numerals and corresponding names are: magnetic coupler 1, supercharged centrifugal rear end cover 2, 3D printed integrated package supercharged pipeline 3, centrifugal supercharged rotor system 4, keyway 1a, copper rotor 1b, permanent magnet rotor 1c, keyway 1d, elastic retaining ring groove 2a, screw hole 2b, O-ring 2c, oil seal installation groove 2d, bearing seat 2e, reserved shaft hole 2f, including packaging box 3a, supercharged centrifugal volute rear end cover flange 3b, Centrifugal boost pipeline 3c, boost main pipeline outlet flange 3d, boost main pipeline outlet 3e, centrifugal boost pipeline outlet 3f, boost main pipeline 3g, boost pipeline shunt pipeline 3h, boost centrifugal volute 3i, boost main pipeline inlet 3j, boost main pipeline inlet flange 3k, main shaft 4a, flat key 4b, hole elastic retaining ring 4c, skeleton oil seal 4d, double row angular contact ball bearing 4e, boost centrifugal twisted impeller 4f, flat key 4g, washer 4h, cap nut 4i; DETAILED DESCRIPTION

[0009] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0010] like Figures 1 to 5As shown, the present invention is a portable auxiliary oil suction and boosting device, comprising a magnetic coupler 1, a boosting centrifugal rear end cover 2, a 3D printed integrated packaged boosting pipeline 3, and a centrifugal boosting rotor system 4, characterized in that the copper rotor 1b of the magnetic coupler 1 is located on the outside of the packaging box 3a of the 3D printed integrated packaged boosting pipeline 3, and is connected to the motor through a key slot 1a, the permanent magnet rotor 1c is located on the inside of the packaging box 3, and is connected to the flat key 4b of the centrifugal boosting rotor system 4 through a key slot 1d, the main shaft 4a is installed in the reserved shaft hole 2f of the centrifugal rear end cover 2, the axis of the main shaft 4a is parallel to the boosting pipeline shunt pipeline 3h of the 3D printed integrated packaged boosting pipeline 3, the hole elastic retaining ring 4c is installed in the elastic retaining ring groove 2a, the skeleton oil seal 4d is close to the right side of the hole elastic retaining ring 4c, and is installed. The 3D printed one-piece packaged boost pipeline 3 is sealed in the oil seal installation groove 2d, the double-row angular contact ball bearing 4e is installed in the bearing seat 2e, the boost centrifugal impeller 4f is fixed on the main shaft 4a, and is located in the boost centrifugal volute 3i. The cap nut 4i is installed on the right end of the main shaft 4a to fix the centrifugal twisted impeller 4f. The centrifugal boost rotor system 4 is driven by the motor to drive the magnetic coupler 1 to rotate. Four screw holes of the same size are provided around the centrifugal rear end cover 2 for flange connection. The flange is connected to the boost centrifugal volute rear end cover flange 3b of the 3D printed one-piece packaged boost pipeline 3, and an O-ring 2c is used for sealing. The 3D printed one-piece packaged boost pipeline 3 is directly connected to the hydraulic system through the boost main line outlet flange 3d and the boost main line inlet flange 3k.

[0011] The 3D printed integrated packaged boost pipeline 3 includes a packaging box 3a, a boost centrifugal volute rear end cover flange 3b, a centrifugal boost pipeline 3c, a boost main pipeline flange 3d, a boost main pipeline outlet 3e, a centrifugal boost pipeline outlet 3f, a boost main pipeline 3g, a boost pipeline shunt pipeline 3h, a boost centrifugal volute 3i, a boost main pipeline inlet 3j, and a boost main pipeline inlet flange 3k, all of which are integrated structures; the packaging box 3a includes a boost centrifugal volute rear end cover flange 3b, a boost centrifugal volute 3i, and part of the centrifugal boost pipeline 3c and the boost pipeline shunt pipeline 3h.

[0012] The centrifugal boost pipeline 3c extends into the boost main pipeline 3g, and its axis is streamlined at 40 degrees with the axis of the boost main pipeline 3g; the outlet end of the centrifugal boost pipeline 3c is nozzle-shaped; the boost main pipeline outlet 3e is parallel to the centrifugal boost pipeline outlet 3f; the axis of the centrifugal boost pipeline 3c outlet section is parallel to the axis of the boost main pipeline 3g; the axis of the boost pipeline shunt pipeline 3h is parallel to the axis of the main shaft 4a.

[0013] The centrifugal booster rotor system 4 includes a main shaft 4a, a flat key 4b, an elastic retaining ring 4c for a hole, a skeleton oil seal 4d, a double-row angular contact ball bearing 4e, a booster centrifugal impeller 4f, a flat key 4g, a washer 4h, and a cap nut 4i; the booster centrifugal impeller 4f is a 6-blade twisted impeller.

[0014] The outer side where the main shaft 4a cooperates with the double-row angular contact ball bearing 4e is provided with a skeleton oil seal 4d and an elastic retaining ring 4c; the outer side where the main shaft 4a cooperates with the booster centrifugal impeller 4f is provided with a washer 4h and a cap nut 4i.

[0015] The magnetic coupler 1 comprises a keyway 1a, a copper rotor 1b, a permanent magnet rotor 1c, and a keyway 1d; the copper rotor 1b and the permanent magnet rotor 1c can be respectively connected to the motor and the main shaft 4a through two flat keys.

[0016] The boost centrifugal rear end cover 2 comprises an elastic retaining ring groove 2a, a screw hole 2b, an O-ring 2c, an oil seal mounting groove 2d, and a bearing seat 2e; an O-ring 2c is provided at the joint between the boost centrifugal rear end cover 2 and the boost centrifugal volute 3i for sealing.

[0017] The working process of the present invention is as follows: the portable auxiliary oil suction and boosting device is directly connected to the hydraulic system pipeline through the boosting main pipeline flange 3d and the boosting main pipeline inlet flange 3k, the magnetic coupler copper rotor 1b is connected to the motor through a flat key, the magnetic coupler permanent magnet rotor 1c is connected to the main shaft 4a through a flat key 4b, the motor drives the magnetic coupler 1 to rotate, thereby driving the centrifugal boosting rotor system 4 to work, and the oil is sucked from the boosting pipeline shunt pipeline 3h into the boosting centrifugal volute 3i, and centrifugally accelerated by the boosting centrifugal impeller 4f, and then the boosted and accelerated oil is injected into the hydraulic system pipeline through the centrifugal boosting pipeline outlet 3f, driving the oil in the hydraulic system oil circuit to accelerate and flow into the hydraulic pump.

[0018] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable auxiliary oil suction boosting device, comprising a magnetic coupler (1), a boosting centrifugal rear end cover (2), a 3D printed integrated package boosting pipeline (3), and a centrifugal boosting rotor system (4), wherein the 3D printed integrated package boosting pipeline (3) has a centrifugal boosting pipeline (3c), characterized in that The copper rotor (1b) of the magnetic coupler (1) is located outside the packaging box (3a) of the 3D printed integrated packaged boost pipeline (3) and is connected to the motor via a keyway (1a). The permanent magnet rotor (1c) is located inside the packaging box (3) and is connected to the flat key (4b) of the centrifugal boost rotor system (4) via a keyway (1d). The main shaft (4a) is installed in the reserved shaft hole (2f) of the centrifugal rear end cover (2). The axis of the main shaft (4a) is parallel to the boost pipeline shunt pipeline (3h) of the 3D printed integrated packaged boost pipeline (3). The hole elastic retaining ring (4c) is installed in the elastic retaining ring groove (2a). The skeleton oil seal (4d) is tightly attached to the right side of the hole elastic retaining ring (4c) and is installed in the oil seal installation groove (2d) to seal the 3D printed integrated packaged boost pipeline (3). The double-row angular contact ball bearing (4e) is installed in the bearing seat (2e). The booster centrifugal impeller (4f) is fixed on the main shaft (4a) and is located in the booster centrifugal volute (3i). The right end of the main shaft (4a) is installed with a cap nut (4i) to fix the centrifugal twisted impeller (4f). The centrifugal booster rotor system (4) is driven to rotate by the motor-driven magnetic coupling (1). Four screw holes of the same size are provided around the centrifugal rear end cover (2) for flange connection. The flange is connected to the booster centrifugal volute rear end cover flange (3b) of the 3D printed integrated package booster pipeline (3). An O-ring (2c) is used for sealing. The 3D printed integrated package booster pipeline (3) is directly connected to the hydraulic system through the booster main pipeline outlet flange (3d) and the booster main pipeline inlet flange (3k).

2. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: The 3D printed integrated packaged boost pipeline (3) comprises a packaging box (3a), a boost centrifugal volute rear end cover flange (3b), a centrifugal boost pipeline (3c), a boost main pipeline flange (3d), a boost main pipeline outlet (3e), a centrifugal boost pipeline outlet (3f), a boost main pipeline (3g), a boost pipeline shunt pipeline (3h), a boost centrifugal volute (3i), a boost main pipeline inlet (3j), and a boost main pipeline inlet flange (3k), all of which are integrated structures; the packaging box (3a) comprises a boost centrifugal volute rear end cover flange (3b), a boost centrifugal volute (3i), and part of the centrifugal boost pipeline (3c) and the boost pipeline shunt pipeline (3h).

3. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: The axis of the centrifugal supercharging pipeline (3c) and the axis of the supercharging main pipeline (3g) are streamlined at 40 degrees; the outlet end of the centrifugal supercharging pipeline (3c) is nozzle-shaped; the outlet of the supercharging main pipeline (3e) is parallel to the outlet of the centrifugal supercharging pipeline (3f); the axis of the outlet section of the centrifugal supercharging pipeline (3c) is parallel to the axis of the supercharging main pipeline (3g); and the axis of the supercharging pipeline shunt pipeline (3h) is parallel to the axis of the main shaft (4a).

4. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: The centrifugal booster rotor system (4) comprises a main shaft (4a), a flat key (4b), a hole elastic retaining ring (4c), a skeleton oil seal (4d), a double-row angular contact ball bearing (4e), a booster centrifugal impeller (4f), a flat key (4g), a washer (4h), and a cap nut (4i); the booster centrifugal impeller (4f) is a 6-blade twisted impeller.

5. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: A skeleton oil seal (4d) and an elastic retaining ring (4c) are provided on the outer side where the main shaft (4a) cooperates with the double-row angular contact ball bearing (4e); a washer (4h) and a cap nut (4i) are provided on the outer side where the main shaft (4a) cooperates with the booster centrifugal impeller (4f).

6. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: The magnetic coupler (1) comprises a keyway (1a), a copper rotor (1b), a permanent magnet rotor (1c), and a keyway (1d); the copper rotor (b) and the permanent magnet rotor (1c) can be respectively connected to the motor and the main shaft (4a) via two flat keys.

7. The portable auxiliary oil suction and pressure boosting device according to claim 1 is characterized in that: The boost centrifugal rear end cover (2) comprises an elastic retaining ring groove (2a), a screw hole (2b), an O-ring (2c), an oil seal installation groove (2d), a bearing seat (2e), and a reserved shaft hole (2f); an O-ring (2c) is provided at the mating position between the boost centrifugal rear end cover (2) and the boost centrifugal volute (3i).

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