Booster pump

Abstract

The present invention discloses a booster pump, comprising a turbine assembly and a driving mechanism, wherein the turbine assembly comprises a casing and blades, the blades are mounted on the casing, and the driving mechanism is connected to the turbine assembly; the driving mechanism comprises a protective shell and a driving mechanism, a containing cavity is arranged in the protective shell, the driving assembly is mounted in the containing cavity and is connected to the blades for driving the blades; the driving mechanism of the technical solution of the present invention is installed with a front bearing assembly and a rear bearing assembly, and the technical solution of the present invention is provided with an oil inlet passage in the driving mechanism, the oil inlet passage comprises a front oil circuit and a rear oil circuit, the front oil circuit is formed in the protective shell and is guided to the front bearing assembly for draining the lubricating oil to the front bearing assembly, the rear oil circuit is formed in the protective shell and the driving assembly, and is guided to the rear bearing assembly for draining the lubricating oil to the rear bearing assembly, both the front bearing assembly and the rear bearing assembly can form an oil film to avoid wear between various parts in the front bearing assembly and the rear bearing assembly, thereby ensuring stable operation of the booster pump.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a booster pump. Background Art

[0002] At present, booster pumps are used as power output in human production and life, and are mainly used to pressurize liquids or gases.

[0003] Most of the existing booster pumps use air bearings and shafts, and the number of starts is about 5,000 times, which is relatively low in usability. In order to increase utilization and extend service life, it is now planned to use booster pumps with oil bearings and shafts. However, booster pumps using oil bearings and shafts will cause mutual wear between the bearings and shafts, resulting in excessive damage to the internal parts of the booster pump, which shortens the service life of the booster pump. Therefore, it is necessary to solve the problems of wear and oil leakage between the oil bearings and shafts in order to expand the scope of application. Summary of the invention

[0004] The main purpose of the present invention is to provide a booster pump, aiming to solve the problems of wear and oil leakage of the oil-floating bearing and the shaft.

[0005] To achieve the above object, the booster pump proposed in the present invention includes a turbine assembly and a driving mechanism, wherein the turbine assembly includes a casing and blades, the blades are installed in the casing, and the driving mechanism is connected to the turbine assembly; the driving mechanism includes:

[0006] a protective shell, the protective shell being connected to the housing, and a receiving cavity being arranged in the protective shell; and

[0007] A driving assembly, the driving assembly is installed in the accommodating cavity and connected to the blade to drive the blade, the driving assembly is installed with a front bearing assembly and a rear bearing assembly;

[0008] The drive mechanism has an oil inlet passage, which includes a front oil circuit and a rear oil circuit. The front oil circuit is formed in the protective shell and guided to the front bearing assembly to drain the lubricating oil to the front bearing assembly. The rear oil circuit is formed in the protective shell and the drive assembly and guided to the rear bearing assembly to drain the lubricating oil to the rear bearing assembly.

[0009] Optionally, the driving assembly comprises:

[0010] A rotor assembly, wherein the rotor assembly is mounted in the accommodating cavity, and the front bearing assembly and the rear bearing assembly are respectively mounted at two ends of the rotor assembly;

[0011] a stator assembly mounted to the rotor assembly; and

[0012] An internal fixing member is arranged on the stator assembly.

[0013] Optionally, the rear oil circuit includes a through hole formed in the protective shell and a drainage channel formed in the internal fixing part, the through hole is installed with a rear oil nozzle, the drainage channel includes a fixed channel, a first forked flow channel and a second forked flow channel, the rear oil nozzle partial structure is plugged into the fixed channel, the first forked flow channel and the second forked flow channel are both connected to the fixed channel, so as to separately drain the lubricating oil flowing into the rear oil nozzle to the rear bearing assembly.

[0014] Optionally, the rear bearing assembly comprises:

[0015] a rear bearing, the rear bearing being mounted on one end of the rotor assembly;

[0016] a rear kit, the rear kit being sleeved on the rear bearing, the rear kit comprising a convex ring and a sleeve-fitting portion, the sleeve-fitting portion being sleeved on the rear bearing, the sleeve-fitting portion being penetrated by a first through hole, the convex ring being penetrated by a second through hole, the first bifurcated flow channel being connected to the first through hole, so as to guide the lubricating oil to the rear bearing; and

[0017] A thrust plate is mounted on the rotor assembly and abuts against the convex ring. The second bifurcated flow channel is connected to the second through hole to guide lubricating oil to the thrust plate.

[0018] Optionally, the thrust plate is provided with a guide hole, the guide hole is connected to the first through hole, the thrust plate includes an abutment surface and an inner surface, the guide hole is provided on the abutment surface and extends obliquely toward the inner surface.

[0019] Optionally, the front oil circuit includes a mounting channel and a guide channel formed in the protective shell, the mounting channel is connected with a front oil nozzle, and the guide channel is connected to the mounting channel for guiding the lubricating oil flowing into the front oil nozzle to the front bearing assembly.

[0020] Optionally, the front bearing assembly comprises:

[0021] a front bearing mounted on an end of the rotor assembly away from the rear bearing assembly; and

[0022] A front kit, wherein the front kit is sleeved on the front bearing, the front kit has a limiting hole, the guide channel extends obliquely toward the limiting hole and is connected with the limiting hole, and the limiting hole is used to guide the lubricating oil to the front bearing.

[0023] Optionally, the oil inlet channel further includes a bottom channel, which is formed in the protective shell and leads to the inner fixing member to guide the lubricating oil to the inner fixing member.

[0024] Optionally, the driving mechanism further includes an oil outlet channel, which is formed in the protective shell and communicates with the accommodating cavity to drain the lubricating oil in the accommodating cavity.

[0025] Optionally, the oil outlet channel is spaced apart from the rear oil passage, and the bottom channel is arranged on a side of the protective shell away from the oil outlet channel.

[0026] The driving mechanism of the technical solution of the present invention is equipped with a front bearing assembly and a rear bearing assembly. The technical solution of the present invention is to set an oil inlet channel in the driving mechanism, and the oil inlet channel includes a front oil circuit and a rear oil circuit. The front oil circuit is formed in the protective shell and guided to the front bearing assembly to drain the lubricating oil to the front bearing assembly. The rear oil circuit is formed in the protective shell and the driving assembly and guided to the rear bearing assembly to drain the lubricating oil to the rear bearing assembly. Both the front bearing assembly and the rear bearing assembly can form an oil film to avoid wear between the various parts in the front bearing assembly and the rear bearing assembly, thereby ensuring the stable operation of the boost pump and the continuous compression of the turbine assembly to perform work externally. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of another embodiment of the booster pump of the present invention;

[0029] Figure 2 A cross-sectional view of an embodiment of a booster pump of the present invention;

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 A cross-sectional view of an embodiment of the booster pump of the present invention in another direction;

[0032] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0033] Figure 6 It is a cross-sectional view of an embodiment of the booster pump of the present invention in other directions.

[0034] Description of Figure Numbers:

[0035]

[0036]

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; 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 elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides a booster pump 100. Figures 1 to 6 , Figure 1 It is a schematic diagram of the three-dimensional structure of another embodiment of the booster pump 100 of the present invention; Figure 2 A cross-sectional view of an embodiment of a booster pump 100 of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 is a cross-sectional view of an embodiment of the booster pump 100 of the present invention in another direction; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 FIG. 1 is a cross-sectional view of an embodiment of the booster pump 100 of the present invention in another direction.

[0043] In the embodiment of the present invention, Figures 1 to 6 As shown, the booster pump 100 proposed by the present invention includes a turbine assembly 10 and a driving mechanism 20. The turbine assembly 10 includes a casing 11 and blades 12. The blades 12 are installed in the casing 11. The driving mechanism 20 is connected to the turbine assembly 10. The driving mechanism 20 includes:

[0044] A protective shell 21, which is connected to the housing 11 and has a receiving cavity 210 disposed therein; and

[0045] A driving assembly 22, which is installed in the accommodating cavity 210 and connected to the blade 12 to drive the blade 12. The driving assembly 22 is installed with a front bearing assembly 25 and a rear bearing assembly 26;

[0046] The driving mechanism 20 has an oil inlet passage 23, which includes a front oil passage 230 and a rear oil passage 231. The front oil passage 230 is formed in the protective shell 21 and is guided to the front bearing assembly 25 to drain the lubricating oil to the front bearing assembly 25. The rear oil passage 231 is formed in the protective shell 21 and the driving assembly 22 and is guided to the rear bearing assembly 26 to drain the lubricating oil to the rear bearing assembly 26.

[0047] In one embodiment, the driving assembly 22 is used to drive the blade 12 to rotate. In order to install the driving assembly 22 on the protective shell 21 and enable it to rotate relative to the protective shell 21, the driving assembly 22 is installed with a front bearing assembly 25 and a rear bearing assembly 26, and the front bearing assembly 25 and the rear bearing assembly 26 are respectively located at two ends of the driving assembly 22.

[0048] The technical solution of the present invention is to set an oil inlet channel 23 in the driving mechanism 20, and the oil inlet channel 23 includes a front oil circuit 230 and a rear oil circuit 231. The front oil circuit 230 is formed in the protective shell 21 and guided to the front bearing assembly 25, so as to drain the lubricating oil to the front bearing assembly 25. The rear oil circuit 231 is formed in the protective shell 21 and the driving assembly 22, and guided to the rear bearing assembly 26, so as to drain the lubricating oil to the rear bearing assembly 26. Both the front bearing assembly 25 and the rear bearing assembly 26 can form an oil film to avoid wear between the various parts in the front bearing assembly 25 and the rear bearing assembly 26, thereby ensuring the stable operation of the boost pump 100 and the continuous compression of the turbine assembly 10 to perform work on the external air.

[0049] Specifically, a portion of the lubricating oil flows from the front oil passage 230 to the front bearing assembly 25, so that an oil film is formed on the surfaces of multiple parts of the front bearing assembly 25; another portion of the lubricating oil flows from the rear oil passage 231 to the rear bearing assembly 26, so that an oil film is formed on the surfaces of multiple parts of the rear bearing assembly 26. Both the front bearing assembly 25 and the rear bearing assembly 26 are lubricated by the lubricating oil, and an oil film can be formed on the inner and outer surfaces of each part. The driving assembly 22 can rotate between the front bearing assembly 25 or the rear bearing assembly 26, and is not easily worn, and the service life of the booster pump 100 is extended.

[0050] Furthermore, since the driving assembly 22 and the front bearing assembly 25 or the driving assembly 22 and the rear bearing assembly 26 are prone to rotational friction and heat generation, after the lubricating oil is added to the front oil circuit 230 and the rear oil circuit 231 of the present invention, the lubricating oil flows in the front oil circuit 230, the rear oil circuit 231, the front bearing assembly 25, the rear bearing assembly 26 and the accommodating cavity 210. The flowing lubricating oil can take away part of the heat to dissipate the heat for the front bearing assembly 25 and the rear bearing assembly 26.

[0051] The booster pump 100 of the present invention does not add cooling water, so the present invention does not need to perform the operation of separating cooling water and lubricating oil, and only needs to set the oil inlet channel 23 to add lubricating oil. In order to quickly lubricate the front bearing assembly 25 and the rear bearing assembly 26, the oil inlet channel 23 is provided with a front oil passage 230 and a rear oil passage 231. The lubricating oil enters from the front oil passage 230 and can quickly flow to the front bearing assembly 25 to lubricate the front bearing assembly 25; the lubricating oil enters from the rear oil passage 231 and can quickly flow to the rear bearing assembly 26 to lubricate the rear bearing assembly 26.

[0052] In addition, lubricating oil generally has anti-oxidation, anti-rust, anti-corrosion and other properties. After the front oil circuit 230 and the rear oil circuit 231 of the present invention are added with lubricating oil, the parts of the front bearing assembly 25 or the rear bearing assembly 26 are not easily corroded by the lubricating oil, and after the inner and outer surfaces of the parts are lubricated with the lubricating oil to form an oil film, the driving assembly 22 can rotate stably, thereby ensuring the working stability of the booster pump 100. In addition, the good fluidity of the lubricating oil also ensures that the lubricating oil can penetrate into the inner and outer surfaces of the parts of the front bearing assembly 25 or the rear bearing assembly 26 to a certain extent.

[0053] In order to prevent the booster pump 100 from being affected by the outside world and to ensure stable boosting operation, the drive assembly 22 includes:

[0054] A rotor assembly 221, the rotor assembly 221 is installed in the accommodating chamber 210, and a front bearing assembly 25 and a rear bearing assembly 26 are respectively installed at both ends of the rotor assembly 221;

[0055] a stator assembly 223 mounted on the rotor assembly 221; and

[0056] The inner fixing member 222 is disposed on the stator assembly 223 .

[0057] The existing booster pump 100 is driven by exhaust gas, which is easily affected by the external environment and works unstably. The booster pump 100 of the present invention is equipped with a drive assembly 22, which is a motor. The motor does not need to be driven by exhaust gas, is not affected by the external environment, and works stably.

[0058] The front bearing assembly 25 and the rear bearing assembly 26 are respectively installed at both ends of the rotor assembly 221 of the motor, the stator assembly 223 is installed on the outside of the rotor assembly 221, and the internal fixing member 222 is installed on the outside of the stator assembly 223. The internal fixing member 222 can be a radiator to dissipate the heat generated by the stator assembly 223 and the rotor assembly 221 to the accommodating cavity 210; the internal fixing member 222 can also be a motor inner shell to protect the stator assembly 223. The rotor assembly 221 and the front bearing assembly 25 can be connected in a sleeve connection, fixed connection or clamping manner.

[0059] Since the present invention does not use exhaust gas for driving, after the front bearing assembly 25 and the rear bearing assembly 26 of the present invention are lubricated with lubricating oil, the rotor assembly 221 can stably rotate on the front bearing assembly 25 and the rear bearing assembly 26, the boosting operation of the boosting pump 100 is more stable, and the service life of the boosting pump 100 is extended.

[0060] In order to allow the lubricating oil to flow quickly to the rear bearing assembly 26, the rear oil circuit 231 includes a through hole 2310 formed in the protective shell 21 and a drainage channel 2312 formed in the inner fixing part 222. The through hole 2310 is installed with a rear oil inlet nozzle 2311. The drainage channel 2312 includes a fixed channel 2313, a first forked flow channel 2314 and a second forked flow channel 2315. Part of the structure of the rear oil inlet nozzle 2311 is inserted into the fixed channel 2313. The first forked flow channel 2314 and the second forked flow channel 2315 are both connected to the fixed channel 2313, so as to separate the lubricating oil flowing into the rear oil inlet nozzle 2311 and drain it to the rear bearing assembly 26.

[0061] In one embodiment, the rear oil inlet nozzle 2311 passes through the through hole 2310 and is fixed in the fixed channel 2313. The lubricating oil enters from the rear oil inlet nozzle 2311 and is diverted to the first forked flow channel 2314 or the second forked flow channel 2315 so that the lubricating oil can quickly penetrate into the inner and outer surfaces of each part of the rear bearing assembly 26.

[0062] Since the rear bearing assembly 26 is connected to the inner fixing member 222, in order to guide the lubricating oil from the protective shell 21 to the rear bearing assembly 26, the inner fixing member 222 is provided with a first bifurcated flow channel 2314 and a second bifurcated flow channel 2315 for drainage, so as to avoid setting another pipeline in the accommodating chamber 210, resulting in a large space occupied by the pipeline and a large volume of the booster pump 100. Directly digging a groove on the inner fixing member 222 to set the first bifurcated flow channel 2314 and the second bifurcated flow channel 2315 for drainage saves space and makes the booster pump 100 more compact.

[0063] In one implementation, the housing 11 and the protective housing 21 are connected by screws. Specifically, the housing 11 and the protective housing 21 are provided with connection structures 13 respectively, and the screws penetrate the connection structures 13 to connect the housing 11 and the protective housing 21 together. The rear oil inlet nozzle 2311 is arranged to avoid the connection structure 13, the through hole 2310 deviates from the connection structure 13, and the fixed flow channel is inclined toward the rear bearing assembly 26, so that the rear oil inlet nozzle 2311 installed in the fixed flow channel is inclined relative to the connection structure 13.

[0064] In order to make the rotor assembly 221 rotate in the accommodating chamber 210 without shaking, the rear bearing assembly 26 includes:

[0065] A rear bearing 260 , wherein the rear bearing 260 is mounted on one end of the rotor assembly 221 ;

[0066] A rear sleeve 261, which is sleeved on the rear bearing 260. The rear sleeve 261 includes a convex ring 2610 and a sleeve-fitting portion 2612. The sleeve-fitting portion 2612 is sleeved on the rear bearing 260. The sleeve-fitting portion 2612 is penetrated by a first through hole 2613. The convex ring 2610 is penetrated by a second through hole 2611. The first bifurcated flow channel 2314 is connected to the first through hole 2613 to guide the lubricating oil to the rear bearing 260; and

[0067] The thrust plate 262 is mounted on the rotor assembly 221 and abuts against the convex ring 2610 . The second bifurcated flow channel 2315 is connected to the second through hole 2611 to guide the lubricating oil to the thrust plate 262 .

[0068] In one embodiment, the blade 12 is connected to the rotor assembly 221 and the inner fixing member 222. When the rear bearing 260 is installed on the rotor assembly 221, a gap is likely to appear between the blade 12 and the rotor assembly 221, and the rotor assembly 221 is likely to shake when rotating. In order to prevent the rotor assembly 221 from shaking when it rotates, the present invention is provided with a thrust plate 262, which is located between the rear bearing 260 and the blade 12, and the rear sleeve 261 is provided with a fitting portion 2612 and a convex ring 2610, the fitting portion 2612 is sleeved on the rear bearing 260 to fix the rear bearing 260, and the convex ring 2610 is protruding relative to the fitting portion 2612, and the convex ring 2610 is used to abut against the thrust plate 262, so that the thrust plate 262 is clamped by the rear bearing 260, the rear sleeve 261, the rotor assembly 221 and the blade 12, and the gap between the rear bearing 260 and the blade 12 is filled, so as to prevent the rotor assembly 221 from deviating or shaking toward the blade 12 when it rotates, resulting in unstable rotation of the rotor assembly 221. Furthermore, the thrust plate 262 can also block the rotor assembly 221 and the rear bearing 260 from being pushed toward the blade 12 , thereby ensuring that the rotor assembly 221 rotates in the accommodating cavity 210 without being deviated.

[0069] The lubricating oil flows from the first bifurcated flow channel 2314 through the first through hole and flows to the rear bearing 260, and an oil film is formed between the rear bearing 260 and the sleeve part 2612, so that the rear bearing 260 and the sleeve part 2612 are not easy to wear. The lubricating oil flows from the second bifurcated flow channel 2315 through the second through hole 2611 and flows to the thrust plate 262, and the lubricating oil wets the thrust plate 262 and the convex ring 2610, so that an oil film is formed between the thrust plate 262 and the convex ring 2610, and the thrust plate 262 and the convex ring 2610 are not easy to wear. The first bifurcated flow channel 2314 and the second bifurcated flow channel 2315 of the present invention can quickly divert the lubricating oil to the rear bearing 260 and the thrust plate 262, reduce the wear between the rotor assembly 221 and the rear bearing 260 or the thrust plate 262, and the rotor assembly 221 can stably rotate in the accommodating chamber 210, and the booster pump 100 works stably. The rear bearing 260 is provided with a receiving hole 253 which is communicated with the first through hole 2613 . Lubricating oil flows from the first through hole 2613 into the receiving hole 253 to lubricate the rear bearing 260 and the rotor assembly 221 . The rotor assembly 221 and the rear bearing 260 are not easily worn.

[0070] Specifically, the first bifurcated flow channel 2314 guides the lubricating oil to between the sleeve-fitting portion 2612 and the inner fixing member 222, then flows along the first through hole 2613 to between the sleeve-fitting portion 2612 and the rear bearing 260, and then flows along the accommodating hole 253 to the inner and outer surfaces of the rear bearing 260, so that the lubricating oil can quickly lubricate the sleeve-fitting portion 2612 and the rear bearing 260; the second bifurcated flow guides the lubricating oil to between the convex ring 2610 and the inner fixing member 222, and then flows along the second through hole 2611 to between the convex ring 2610 and the thrust plate 262, so that the lubricating oil can quickly lubricate the convex ring 2610 and the thrust plate 262. Afterwards, the lubricating oil continues to penetrate into each part of the rear bearing assembly 26, and the lubricating oil wets the inner and outer surfaces of each part of the rear bearing assembly 26.

[0071] Since the thrust plate 262 is in contact with the rotor assembly 221, the rear bearing assembly 26 and the blade 12, a guide hole 2620 is provided through the thrust plate 262, and the guide hole 2620 is connected to the first through hole 2613. The thrust plate 262 includes an abutment surface 2621 and an inner surface 2622. The guide hole 2620 is provided on the abutment surface 2621 and extends obliquely toward the inner surface 2622.

[0072] In one embodiment, in order to quickly lubricate the abutment surface 2621 and the inner surface 2622 of the thrust plate 262, the thrust plate 262 is provided with a guide hole 2620, and the lubricating oil flows to the abutment surface 2621 through the second forked flow channel 2315, and is then drained to the inner surface 2622 through the guide hole 2620, so that the abutment surface 2621 and the inner surface 2622 of the thrust plate 262 are both lubricated, and more lubricating oil continues to accumulate and penetrate in the thrust plate 262, and the gap between the thrust plate 262 and the blade 12 is filled with the lubricating oil, thereby forming an oil film between the thrust plate 262 and the rotor assembly 221, an oil film is also formed between the thrust plate 262 and the rear bearing assembly 26, and an oil film is formed between the thrust plate 262 and the blade 12.

[0073] In order to reduce the impact on the internal fixing part 222, the front oil circuit 230 includes an installation channel 2301 and a guide channel 2303 formed in the protective shell 21. The installation channel 2301 is plugged with a front oil nozzle 2302, and the guide channel 2303 is connected to the installation channel 2301 for guiding the lubricating oil flowing into the front oil nozzle 2302 to the front bearing assembly 25.

[0074] In one embodiment, in order to reduce the impact on the inner fixing member 222, the front oil passage 230 is arranged to avoid the fixing member. At the same time, in order to allow the lubricating oil to flow quickly to the front bearing assembly 25, the installation channel 2301 and the guide channel are arranged obliquely toward the direction of the front bearing assembly 25, and the lubricating oil flows in from the front oil nozzle 2302 and flows to the front bearing assembly 25 through the guide channel 2303, and the lubricating oil can quickly lubricate the front bearing assembly 25.

[0075] In order to ensure that the rotor assembly 221 rotates stably in the accommodating chamber 210, the front bearing assembly 25 includes:

[0076] A front bearing 250, which is mounted on an end of the rotor assembly 221 away from the rear bearing assembly 26; and

[0077] The front kit 251 is sleeved on the front bearing 250 . The front kit 251 has a limiting hole 252 . The guide channel 2303 extends obliquely toward the limiting hole 252 and is connected to the limiting hole 252 . The limiting hole 252 is used to guide the lubricating oil to the front bearing 250 .

[0078] In one embodiment, one end of the rotor assembly 221 is connected to the rear bearing assembly 26, and the other end is connected to the front bearing assembly 25. The front bearing assembly 25 is used to separate the protective shell 21 from the rotor assembly 221, and the front sleeve 251 limits the front bearing assembly 25 so that the front bearing 250 is installed on the rotor assembly 221 without deviation. The front sleeve 251 has a limiting hole 252, and the guide channel 2303 extends obliquely toward the limiting hole 252 and is connected to the limiting hole 252. The limiting hole 252 is used to guide the lubricating oil to the front bearing 250.

[0079] Among them, the front bearing 250 is also provided with a receiving hole 253, which is communicated with the limiting hole 252. The lubricating oil flows from the limiting hole 252 into the receiving hole 253 to lubricate the front bearing 250 and the rotor assembly 221, and the rotor assembly 221 and the front bearing 250 are not easy to wear. In addition, the front bearing assembly 25 and the rear bearing assembly 26 are both installed with an oil blocking ring 2623, which is installed between the rotor assembly 221 and the protective shell 21 and abuts against the front bearing 250 or the thrust plate 262. The oil blocking ring 2623 is used to prevent the lubricating oil from flowing out of the gap between the rotor assembly 221 and the protective shell 21. After the lubricating oil flows through the front bearing assembly 25 or the rear bearing assembly 26, it flows into the accommodating cavity 210, and will not flow out from the gap between the rotor assembly 221 and the protective shell 21.

[0080] In order to cool down and dissipate the heat of the driving assembly 22 , the oil inlet channel 23 further includes a bottom channel 232 . The bottom channel 232 is formed in the protective shell 21 and leads to the inner fixing member 222 to guide the lubricating oil to the inner fixing member 222 .

[0081] In order to dissipate heat from the given subassembly 223 and the inner fixing part 222, the present invention further provides a bottom channel 232, so that the lubricating oil flows in from the bottom channel 232 and flows to the inner fixing part 222. The flowing lubricating oil takes away the heat in the inner fixing part 222 or the accommodating cavity 210, so as to cool the driving assembly 22 and ensure the normal boosting work of the booster pump 100. The bottom channel 232 is provided at the bottom of the protective shell 21, and the lubricating oil enters the inner fixing part 222 and penetrates layer by layer, thereby playing the role of lubrication and heat dissipation layer by layer.

[0082] In addition, sometimes the lubricating oil flowing in the bottom channel 232 can also be returned out of the bottom channel 232 so as to collect back part of the lubricating oil.

[0083] In order to discharge the lubricating oil flowing into the accommodating chamber 210 , the driving mechanism 20 further includes an oil outlet channel 24 . The oil outlet channel 24 is formed in the protective shell 21 and communicates with the accommodating chamber 210 to drain the lubricating oil in the accommodating chamber 210 .

[0084] In one embodiment, the protective shell 21 is provided with an oil outlet nozzle, which is in communication with the accommodating chamber 210. After the lubricating oil flows in from the front oil path 230, the rear oil path 231 or the bottom channel 232, it flows to the accommodating chamber 210 through the front bearing assembly 25, the rear bearing assembly 26 or the inner fixing member 222, and then flows out from the oil outlet nozzle. The oil outlet channel 24 is arranged at the top of the protective shell 21, and the lubricating oil can penetrate the front bearing assembly 25 or the rear bearing assembly 26 layer by layer, and then flow out from the accommodating chamber 210. This greatly avoids the situation that when the oil outlet channel 24 is arranged at the bottom of the protective shell 21, the lubricating oil cannot completely wet the front bearing assembly 25, the rear bearing assembly 26, the inner fixing member 222 and other parts due to the influence of gravity, resulting in the occurrence of wear between the rotor assembly 221 and the front bearing assembly 25, the rear bearing assembly 26 or the inner fixing member 222, the booster pump 100 cannot work stably, and the service life of the booster pump 100 is shortened.

[0085] In order to prevent the rear oil passage 231 and the oil outlet channel 24 from interfering with the connection structure 13 , the oil outlet channel 24 and the rear oil passage 231 are spaced apart, and the bottom channel 232 is disposed on a side of the protective shell 21 away from the oil outlet channel 24 .

[0086] In one embodiment, the housing 11 and the protective shell 21 are provided with a connection structure 13 correspondingly, and the screws penetrate the connection structure 13 to connect the housing 11 and the protective shell 21 together. In order to prevent the rear oil circuit 231 and the oil outlet channel 24 from interfering with the connection structure 13, the oil outlet channel 24 and the rear oil circuit 231 are spaced apart relative to the connection structure 13. Among them, the present invention is provided with at least two oil outlet channels 24, each of which is equipped with an oil outlet nozzle, which is connected to the accommodating chamber 210, so that the lubricating oil that has lubricated the front bearing assembly 25, the rear bearing assembly 26 or the inner fixing member 222 flows out from the oil outlet nozzle via the accommodating chamber 210.

[0087] The front bearing assembly 25 and the rear bearing assembly 26 of the present invention are both lubricated with lubricating oil, and an oil film can be formed on the inner and outer surfaces of each part. After that, the excess lubricating oil flows into the accommodating cavity 210 and flows out from the oil outlet channel 24 through the accommodating cavity 210. After the front bearing assembly 25 and the rear bearing assembly 26 are lubricated, the driving assembly 22 can rotate between the front bearing assembly 25 or the rear bearing assembly 26, and is not easy to be worn, so that the service life of the booster pump 100 is extended.

[0088] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A booster pump, characterized in that: The invention comprises a turbine assembly and a driving mechanism, wherein the turbine assembly comprises a casing and blades, wherein the blades are installed in the casing, and the driving mechanism is connected to the turbine assembly; the driving mechanism comprises: a protective shell, the protective shell being connected to the housing, and a receiving cavity being arranged in the protective shell; and A driving assembly, the driving assembly is installed in the accommodating cavity and connected to the blade to drive the blade, the driving assembly is installed with a front bearing assembly and a rear bearing assembly; the driving assembly also includes a rotor assembly, a stator assembly and an internal fixing member, the rotor assembly is installed in the accommodating cavity, and the front bearing assembly and the rear bearing assembly are respectively installed at both ends of the rotor assembly, the stator assembly is installed on the rotor assembly, the internal fixing member is arranged on the stator assembly, and the inner surface of the internal fixing member is formed with a first bifurcated flow channel and a second bifurcated flow channel; The rear bearing assembly comprises: a rear bearing, the rear bearing being mounted on one end of the rotor assembly; A rear set, the rear set is sleeved on the rear bearing, the rear set comprises a convex ring and a sleeve-fitting portion, the sleeve-fitting portion is sleeved on the rear bearing, the sleeve-fitting portion is penetrated by a first through hole, and the convex ring is penetrated by a second through hole; and A thrust plate, the thrust plate is mounted on the rotor assembly and abuts against the convex ring; the thrust plate is provided with a guide hole, the guide hole is connected to the first through hole, the thrust plate includes an abutting surface and an inner surface, the guide hole is provided on the abutting surface and extends obliquely toward the inner surface; The drive mechanism has an oil inlet passage, and the oil inlet passage includes a front oil passage and a rear oil passage, the front oil passage is formed in the protective shell and is guided to the front bearing assembly to guide the lubricating oil to the front bearing assembly, and the rear oil passage is formed in the protective shell and the drive assembly and is guided to the rear bearing assembly to guide the lubricating oil to the rear bearing assembly; The first bifurcated flow channel is connected to the first through hole to guide the lubricating oil to the rear bearing, and the second bifurcated flow channel is connected to the second through hole to guide the lubricating oil to the thrust plate.

2. The booster pump according to claim 1, characterized in that: The rear oil circuit includes a through hole formed in the protective shell and a drainage channel formed in the inner fixing part, the through hole is installed with a rear oil nozzle, the drainage channel includes a fixed channel, a first forked flow channel and a second forked flow channel, the rear oil nozzle partial structure is plugged into the fixed channel, the first forked flow channel and the second forked flow channel are both connected to the fixed channel, so as to separately drain the lubricating oil flowing into the rear oil nozzle to the rear bearing assembly.

3. The booster pump according to claim 1, characterized in that: The front oil circuit includes a mounting channel and a guide channel formed in the protective shell, the mounting channel is plugged with a front oil nozzle, and the guide channel is connected to the mounting channel for guiding the lubricating oil flowing into the front oil nozzle to the front bearing assembly.

4. The booster pump according to claim 3, characterized in that: The front bearing assembly comprises: a front bearing mounted on an end of the rotor assembly away from the rear bearing assembly; and A front kit, wherein the front kit is sleeved on the front bearing, the front kit has a limiting hole, the guide channel extends obliquely toward the limiting hole and is connected with the limiting hole, and the limiting hole is used to guide the lubricating oil to the front bearing.

5. The booster pump according to any one of claims 1 to 4, characterized in that: The oil inlet passage also includes a bottom passage formed in the protective shell and leading to the inner fixing member for guiding the lubricating oil to the inner fixing member.

6. The booster pump according to claim 5, characterized in that: The driving mechanism further includes an oil outlet passage, which is formed in the protective shell and communicates with the accommodating cavity for draining the lubricating oil in the accommodating cavity.

7. The booster pump according to claim 6, characterized in that: The oil outlet channel is spaced apart from the rear oil passage, and the bottom channel is arranged on a side of the protective shell away from the oil outlet channel.

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