CN107524625B - Oil mass automatic regulating device and oil circuit system - Google Patents

Abstract

The invention discloses an automatic oil quantity adjusting device and an oil circuit system. The oil quantity automatic regulating device comprises a shell (1), wherein the shell (1) comprises an oil inlet (2) and an oil outlet (3), the shell (1) is provided with a cavity communicated with the oil inlet (2) and the oil outlet (3), and a flow regulating unit used for regulating the flow of the oil outlet (3) according to the flow of the oil inlet (2) is arranged in the cavity. According to the oil quantity automatic regulating device, the oil quantity entering the bearing can be ensured to be always in a reasonable range.

Description

Oil mass automatic regulating device and oil circuit system

Technical Field

The invention relates to the technical field of compressors, in particular to an automatic oil quantity adjusting device and an oil circuit system.

Background

In conventional centrifugal compressors, an oil circuit system is an indispensable auxiliary system. It is generally composed of an oil pump, an oil filter, a low-level oil tank, a high-level oil tank, a bearing, a connecting pipe, etc.

In the centrifugal compressors of the prior art, a fixed-frequency oil pump is generally used for cost and mechanical reliability. When the oil pump is set up from the factory, the pressure of the high-level oil tank is enabled to be P1, the pressure of the low-level oil tank is enabled to be P2 through adjusting the pressure regulating valve of the oil pump, and at the moment, the oil pressure difference delta P=P1-P2. Because of the fixed-frequency oil pump, the oil pressure difference is set to be a fixed value. However, the areas of the users are different, so that the running environments of the centrifugal compressors are different, and even in the same area, the climates of the centrifugal compressors are different all the year round, and at the moment, the oil pressure difference of the centrifugal compressors, which is set by the factory, cannot be changed along with the environments. When the outside air temperature is reduced, the temperature of chilled water is reduced, the evaporation pressure is reduced, the pressure of an oil tank is reduced, the oil pressure difference is increased, the flow rate of lubricating oil entering the bearing is increased, a dynamic pressure oil film of the bearing is easily damaged, and the inner wall of the bearing is washed by excessive flow rate to cause damage. Conversely, when the external temperature rises, the oil pressure difference is reduced, the flow of the lubricating oil entering the bearing is reduced, the oil supply is insufficient easily, the bearing is dry rubbed, and even the bearing is burned.

Therefore, there is a lack of the prior art to automatically adjust the oil supply to the bearing so that the amount of oil entering the bearing can be kept within a reasonable range.

Disclosure of Invention

The embodiment of the invention provides an automatic oil quantity adjusting device and an oil circuit system, which can ensure that the oil quantity entering a bearing is always in a reasonable range.

In order to achieve the above purpose, the embodiment of the invention provides an automatic oil quantity adjusting device, which comprises a shell, wherein the shell comprises an oil inlet and an oil outlet, the shell is provided with a cavity communicated with the oil inlet and the oil outlet, and a flow adjusting unit for adjusting the flow of the oil outlet according to the flow of the oil inlet is arranged in the cavity.

Preferably, the inner wall of the shell is provided with a first regulating flow passage communicated with the oil inlet and a second regulating flow passage communicated with the oil outlet, the flow regulating unit comprises a first regulating block and a second regulating block, the first regulating block is matched with the first regulating flow passage to regulate the flow of the first regulating flow passage, and the second regulating block is matched with the second regulating flow passage to regulate the flow of the second regulating flow passage.

Preferably, the first regulating block and the second regulating block synchronously slide in the shell between the oil inlet and the oil outlet.

Preferably, a guide block is arranged in the shell, an adjusting rod is arranged on the guide block in a sliding mode, a first adjusting block is arranged at the first end of the adjusting rod, a second adjusting block is arranged at the second end of the adjusting rod, the first adjusting block is located at the first side of the guide block, the second adjusting block is located at the second side, opposite to the first side, of the guide block, and a first oil hole which is communicated with the first side and the second side oil way is formed in the guide block.

Preferably, an elastic piece is arranged between the first adjusting block and the guide block, and the elastic piece provides elastic acting force for blocking the oil inlet for the adjusting rod.

Preferably, the guide block is fixedly provided with a guide bearing, and the adjusting rod is arranged in the guide bearing in a sliding manner.

Preferably, one end of the adjusting rod, which faces the oil inlet, is provided with a conical guide head.

Preferably, the first oil hole is provided near an inner wall surface of the housing.

Preferably, the second adjusting block is provided with a second oil hole for communicating oil paths at two ends of the second adjusting block.

Preferably, the second oil hole is provided near the center axis of the second regulating block.

Preferably, the housing has an outer wall matching the shape of the first and second regulating flow channels.

Preferably, the outlet of the second regulating flow passage is led to the oil outlet by an inclined guiding wall, the inclination angle of which is 45 °.

Preferably, the first regulating block is disposed at the inlet of the first regulating flow passage, and the relationship between the length L2 of the first regulating block and the inlet width L1 of the first regulating flow passage satisfies l2= (1.1-1.3) L1.

Preferably, the adjusting rod is opposite to the oil inlet, and the relation between the diameter M1 of the front end shaft section of the adjusting rod and the diameter phi D1 of the oil inlet meets M1>1.5 phi D1.

Preferably, the effective deformation length L3 of the elastic member is greater than the inlet width L4 of the second regulation flow path.

Preferably, the outer circumferential surface of the guide bearing on the first side of the guide block and the outer circumferential surface of the guide bearing on the second side of the guide block are arc surfaces with decreasing cross-sectional sizes along the direction away from the guide block.

Preferably, the inner circumferential surface of the guide bearing, which engages with the adjusting rod, is coated with graphite or a babbitt metal, the coating thickness of which is greater than 1mm.

Preferably, the relationship between the inlet width L1 of the first regulating flow passage and the inlet width L4 of the second regulating flow passage satisfies L4 > 1.15L1.

Preferably, the first regulating flow channel and/or the second regulating flow channel is/are annular flow channels.

According to another aspect of the present invention, there is provided an oil path system including a low-level oil tank, an oil pump, a connection pipe, a high-level oil tank, an automatic oil amount adjusting device, and a bearing, the low-level oil tank, the oil pump, the high-level oil tank, the automatic oil amount adjusting device, and the bearing being sequentially connected through the connection pipe to form an oil path cycle, the automatic oil amount adjusting device being the automatic oil amount adjusting device described above.

Preferably, an oil filter is provided on the connection pipe between the oil pump and the high-level oil tank.

By applying the technical scheme of the invention, the oil quantity automatic regulating device comprises a shell, wherein the shell comprises an oil inlet and an oil outlet, the shell is provided with a cavity communicated with the oil inlet and the oil outlet, and a flow regulating unit for regulating the flow of the oil outlet according to the flow of the oil inlet is arranged in the cavity. The automatic oil quantity adjusting device can adjust the flow of the oil outlet through the flow adjusting unit according to the flow of the oil inlet, so that the automatic adjustment of the flow of the fixed-frequency oil pump can be realized, stable oil supply under different working conditions is met, the stability of a rotor system is improved, the oil quantity finally entering the bearing is always kept within a proper oil quantity range, damage to the bearing caused by overlarge or small oil quantity is avoided, and the service life of the bearing is prolonged.

Drawings

FIG. 1 is a perspective sectional view of an automatic oil amount adjusting apparatus according to an embodiment of the present invention;

FIG. 2 is a sectional view of the oil quantity automatic adjusting device according to the embodiment of the present invention;

FIG. 3 is a schematic diagram of the operation of the automatic oil quantity adjusting device according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an oil passage system according to an embodiment of the present invention.

Reference numerals illustrate: 1. a housing; 2. an oil inlet; 3. an oil outlet; 4. a first regulating flow passage; 5. a second regulating flow passage; 6. a first adjustment block; 7. a second adjustment block; 8. a guide block; 9. an adjusting rod; 10. a first oil hole; 11. an elastic member; 12. a guide bearing; 13. a conical guide head; 14. a second oil hole; 15. a sloped guide wall; 16. a low-level oil tank; 17. an oil pump; 18. a connecting pipe; 19. a high-level oil tank; 20. a bearing; 21. an oil filter.

Detailed Description

The invention will now be described in further detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Referring to fig. 1 to 4 in combination, according to an embodiment of the present invention, an automatic oil amount adjusting device includes a housing 1, the housing 1 including an oil inlet 2 and an oil outlet 3, the housing 1 having a cavity communicating the oil inlet 2 and the oil outlet 3, a flow amount adjusting unit being provided in the cavity for adjusting a flow amount of the oil outlet 3 according to a flow amount of the oil inlet 2.

This oil mass automatic regulating apparatus can be through the lubricating oil flow of flow control unit according to the lubricating oil flow control oil-out 3 of oil inlet 2, consequently can realize the automatically regulated of fixed frequency oil pump flow, satisfies the stable fuel feeding under the different operating modes, improves rotor system's stability for finally get into the oil mass of bearing and remain in suitable oil mass within range all the time, avoid the oil mass too big or too little to cause the damage to the bearing, improve the life of bearing.

In this embodiment, the housing 1 has a rotary structure, a cylindrical appearance, and a cavity is formed in the housing 1. The main function of the housing 1 is to provide a fixing function and a mounting position for the flow regulating unit. Specifically, the housing 1 includes two half cylinders that are fixedly connected together to form the completed housing 1. The two half cylinders are identical in structure and symmetrical about the central axis of the housing 1.

Preferably, a first adjusting flow passage 4 communicated with the oil inlet 2 and a second adjusting flow passage 5 communicated with the oil outlet 3 are arranged on the inner wall of the shell 1, the flow adjusting unit comprises a first adjusting block 6 and a second adjusting block 7, the first adjusting block 6 is matched with the first adjusting flow passage 4 to adjust the flow of the first adjusting flow passage 4, and the second adjusting block 7 is matched with the second adjusting flow passage 5 to adjust the flow of the second adjusting flow passage 5. Through adjusting the flow of the first adjusting flow channel 4 and the second adjusting flow channel 5, the flow of the lubricating oil entering from the oil inlet 2 flowing out of the oil outlet 3 can be conveniently adjusted, and the outflow of the lubricating oil can be ensured to meet the use requirement.

Through setting the first adjusting block 6 and the second adjusting block 7 reasonably, the relation between the first adjusting flow channel 4 and the second adjusting flow channel 5 can be adjusted according to the lubricating oil flow rate of the oil inlet 2, when the lubricating oil flow rate of the oil inlet 2 is smaller, the first adjusting flow channel 4 is smaller, and the second adjusting flow channel 5 can be larger, so that lubricating oil can flow out from the second adjusting flow channel 5 to the oil outlet 3 more conveniently, and lubricating oil can flow out from the oil outlet 3 conveniently; when the flow of the lubricating oil of the oil inlet 2 is large, the flow of the first regulating flow passage 4 is large, and the flow of the second regulating flow passage 5 is small, so that the lubricating oil can smoothly flow to the second regulating flow passage 5 through the first regulating flow passage 4, and flow to the oil outlet 3 at a small flow under the regulating action of the second regulating flow passage 5, the lubricating oil quantity flowing out of the oil outlet 3 is limited, the lubricating oil quantity can be regulated all the time according to the oil quantity of the oil inlet 2, and the oil quantity flowing out of the oil outlet 3 is always kept in a reasonable range.

Preferably, the first adjusting block 6 and the second adjusting block 7 slide synchronously in the housing 1 between the oil inlet 2 and the oil outlet 3. Because the first regulating block 6 is used for regulating the flow of the first regulating flow channel 4, the second regulating block 7 is used for regulating the flow of the second regulating flow channel 5, when the first regulating block 6 and the second regulating block 7 slide synchronously, when the first regulating block 6 enlarges the flow of the first regulating flow channel 4, the second regulating block 7 correspondingly moves towards the direction for reducing the flow of the second regulating flow channel 5, when the first regulating block 6 reduces the flow of the first regulating flow channel 4, the second regulating block 7 correspondingly moves towards the direction for increasing the flow of the second regulating flow channel 5, so that the flow of the oil outlet 3 can be regulated according to the oil quantity of the oil inlet 2 all the time, the flow of the oil outlet 3 is kept unchanged or is changed less, and damage to a bearing is avoided.

Preferably, a guide block 8 is arranged in the shell 1, an adjusting rod 9 is slidably arranged on the guide block 8, a first adjusting block 6 is arranged at a first end of the adjusting rod 9, a second adjusting block 7 is arranged at a second end of the adjusting rod 9, the first adjusting block 6 is positioned at a first side of the guide block 8, the second adjusting block 7 is positioned at a second side, opposite to the first side, of the guide block 8, and a first oil hole 10 for communicating the first side with a second side oil way is arranged on the guide block 8. The guide block 8 is used for supporting and guiding the adjusting rod 9, so that the adjusting rod 9 can move along the axial direction of the shell 1, and the first adjusting block 6 and the second adjusting block 7 are driven to move along the axial direction of the shell 1, so that the flow adjustment of the first adjusting flow channel 4 and the second adjusting flow channel 5 is realized. The first oil hole 10 can enable lubricating oil to smoothly flow from the first adjusting flow channel 4 to the second adjusting flow channel 5, so that the obstruction of the guide block 8 to the flow of the lubricating oil is avoided, and the lubricating oil can be ensured to flow out of the oil outlet 3 timely and rapidly.

The adjusting rod 9 is a solid shaft part and plays a role in axial movement and support. The rear end structure of the adjusting rod 9 forms a second adjusting block 7, and the second adjusting block 7 is integrally formed with the adjusting rod 9 and is matched with the annular groove of the second adjusting flow channel 5 to play a role in adjusting flow. A second oil hole 14 is provided in the rear shaft section of the adjusting lever 9, from which lubricating oil enters the annular groove of the second adjusting flow channel 5.

The first regulating block 6 is an annular column, the outer diameter of the annular column is matched with the diameter of the sliding hole of the shell 1, so that sealing fit is formed between the outer periphery of the first regulating block 6 and the inner peripheral wall of the shell 1, and lubricating oil leakage at the fit position of the first regulating block 6 and the shell 1 is avoided, and flow regulation on the oil outlet 3 is affected.

Preferably, an elastic piece 11 is arranged between the first adjusting block 6 and the guide block 8, and the elastic piece 11 provides elastic acting force for blocking the oil inlet 2 for the adjusting rod 9. The elastic member 11 can provide elastic restoring force for the adjusting lever 9, so that when no lubricating oil flows, the adjusting lever 9 is driven to move towards the initial position, and meanwhile, automatic telescopic movement of the adjusting lever 9 is realized. The elastic member 11 is, for example, a cylindrical coil spring.

The first adjusting block 6 is used for being matched with the first adjusting flow channel 4, and plays a role in adjusting the flow of the first adjusting flow channel 4. For convenient assembly and adjustment, the first adjusting block 6 is provided with a threaded hole, and is in threaded connection with the adjusting rod 9, and during assembly, the effective length of the spring is L3 by rotating the first adjusting block 6. The outer diameter of the first regulating block 6 is in clearance fit with the inner cavity of the shell 1, and the clearance tolerance is generally H7/g6, so that the first regulating block 6 and the shell 1 form axial precise sliding.

Preferably, the guide block 8 is fixedly provided with a guide bearing 12, and the adjusting rod 9 is slidably arranged in the guide bearing 12. The guide bearing 12 is used for guiding and supporting the adjusting rod 9, in general, the thickness of the guide block 8 is smaller, and the supporting strength is insufficient, so if the adjusting rod 9 is guided and supported only by the guide block 8, the guide block 8 can not well realize the guiding of the adjusting rod 9, and the accuracy and the reliability of the movement of the adjusting rod 9 are affected. The guide bearing 12 has a longer length and a smaller diameter relative to the guide block 8, so that the guide and support length of the adjusting rod 9 can be increased, the effectiveness of the guide and support of the adjusting rod 9 is ensured, and the accuracy of the movement of the adjusting rod 9 is improved.

Preferably, the inner circumferential surface of the guide bearing 12, which cooperates with the adjusting rod 9, is coated with graphite or a babbitt alloy, the coating thickness of which is greater than 1mm. By providing the above-described wear-resistant layer, the wear resistance of the inner peripheral surface of the guide bearing 12 can be improved, and the service life of the guide bearing 12 can be prolonged.

Preferably, the end of the adjusting rod 9 facing the oil inlet 2 is provided with a conical guide head 13. The conical guide head 13 can play a role in diversion and diversion, and meanwhile, the oil pressure loss at the oil inlet 2 can be reduced. When lubricating oil enters the cavity of the shell 1 from the oil inlet 2, the adjusting rod 9 is opposite to the oil inlet 2, the lubricating oil directly impacts the adjusting rod 9, transition can be effectively formed through the guiding and shunting effect of the conical guide head 13 of the adjusting rod 9, impact loss of the lubricating oil is reduced, and impact effect on the adjusting rod 9 is reduced. Preferably, the taper angle of the tapered guide head 13 is 90 degrees. Preferably, the head of the conical guide head 13 has a circular arc-shaped structure.

Preferably, the second adjusting block 7 is provided with a second oil hole 14 for communicating oil paths at both ends of the second adjusting block 7. The second oil hole 14 is used for communicating oil ways at two ends of the second adjusting block 7, so that the oil way between the oil inlet 2 and the oil outlet 3 can be kept smooth, and lubricating oil can be ensured to smoothly flow out from the oil outlet 3.

Preferably, the housing 1 has an outer wall matching the shape of the first and second regulating channels 4, 5. Because the first adjusting flow channel 4 and the second adjusting flow channel 5 are both arranged on the inner wall of the shell 1, the structural strength of the shell 1 can be reduced, the shell 1 is provided with the outer wall matched with the shapes of the first adjusting flow channel 4 and the second adjusting flow channel 5, the wall thickness allowance brought by the first adjusting flow channel 4 and the second adjusting flow channel 5 can be increased, and the structural strength of the shell 1 can be improved.

In this embodiment, the first adjusting flow channel 4 and the second adjusting flow channel 5 are arc grooves, and are symmetrically provided with 4 arc bosses on the side surface of the casing 1, which have the same function as the reinforcing ribs, and can play a role in reinforcing the wall thickness of the casing 1. The arc-shaped bosses are positioned on the outer circumferences of the first adjusting flow channel 4 and the second adjusting flow channel 5, which is helpful for increasing the wall thickness allowance caused by the arc-shaped grooves. In order to improve the compactness and the assembly rationality, 4 screw through holes are formed in the arc-shaped boss and are used for fixedly connecting the two semi-cylinders together through screws.

Preferably, the outlet of the second regulating flow passage 5 is guided to the oil outlet 3 by the inclined guide wall 15, the inclination angle of the inclined guide wall 15 is 45 degrees, the lubricating oil can be guided, and the oil pressure loss at the oil outlet 3 is reduced. The inclined guide wall 15 forms a conical guide surface, and the generatrix of the conical guide surface is a straight line segment and is matched with the outlet of the second regulating flow passage 5, so that a more effective flow guiding effect can be formed.

Preferably, the first regulating block 6 is disposed at the inlet of the first regulating flow passage 4, and the relationship between the length L2 of the first regulating block 6 and the inlet width L1 of the first regulating flow passage 4 satisfies l2= (1.1-1.3) L1. In order to ensure the effective adjustment length of the first adjustment block 6, the length L2 of the first adjustment block 6 should be greater than the inlet width L1 of the first adjustment flow passage 4, and the relationship between L2 and L1 is set to the above relationship in consideration of the clearance fit length.

Preferably, the adjusting rod 9 is opposite to the oil inlet 2, the relation between the diameter M1 of the front end shaft section of the adjusting rod 9 and the diameter phi D1 of the oil inlet 2 meets M1>1.5 phi D1, when the oil circuit system stops working, the adjusting rod 9 can be contacted with the oil inlet 2 under the action of lubricating oil backflow to form linear seal, lubricating oil cannot circulate, and accordingly lubricating oil backflow is effectively prevented.

Preferably, the effective deformation length L3 of the elastic member 11 is greater than the inlet width L4 of the second adjusting flow channel 5, and the inlet width L4 of the second adjusting flow channel 5 cannot be completely closed under the pressure of the lubricating oil, so that the deformation length of the elastic member 11 is always smaller than L4, thereby effectively avoiding the collision between the first adjusting block 6 and the guide bearing 12.

The spring rate k of the spring is determined according to the following spring force formula, flow rate and pressure difference relation:

the elasticity calculation formula: f=λk, where λ is the amount of spring deflection and F is the spring force;

flow and differential pressure relationship: Δp= (Q/(uA)) 2 ρ/2.

Δp is differential pressure, Q is lubricant flow, ρ is lubricant density, a is lubricant flow area, and u is flow coefficient.

Preferably, the outer circumferential surface of the guide bearing 12 on the first side of the guide block 8 and the outer circumferential surface of the guide bearing 12 on the second side of the guide block 8 are arc surfaces with decreasing cross-sectional sizes in the direction away from the guide block 8. The two arc surfaces can play an effective drainage role and reduce the impact loss of lubricating oil. Preferably, there is an interference fit between the guide bearing 12 and the guide block 8.

Preferably, the relationship between the inlet width L1 of the first accommodating flow channel 4 and the inlet width L4 of the second accommodating flow channel 5 satisfies L4 > 1.15L1. In the working process, the flow regulation of the oil outlet 3 is mainly realized by the second regulating flow passage 5, so that L4 is larger than 1.15L1, the second regulating flow passage 5 can more reasonably regulate the flow of the oil outlet 3, and the flow regulation range of the oil outlet 3 can be increased.

Preferably, the first regulating flow channel 4 and/or the second regulating flow channel 5 are annular flow channels. The first adjusting flow passage 4 and the second adjusting flow passage 5 are characterized by annular oil grooves, and consist of 4 annular oil grooves in total. The first regulating flow passage 4 is composed of two annular oil grooves symmetrically arranged around the central axis of the housing 1, an outer annular radius R1, an inner annular radius R2, and an inlet width L1 of the annular oil grooves. Similarly, the second regulating flow passage 5 is also composed of two annular oil grooves symmetrically arranged around the central axis of the housing 1, an outer annular radius R3, an inner annular radius R4, and an inlet width L4 of the annular oil grooves.

According to the embodiment of the invention, the oil circuit system comprises a low-level oil tank 16, an oil pump 17, a connecting pipe 18, a high-level oil tank 19, an oil quantity automatic regulating device and a bearing 20, wherein the low-level oil tank 16, the oil pump 17, the high-level oil tank 19, the oil quantity automatic regulating device and the bearing 20 are sequentially connected through the connecting pipe 18 to form an oil circuit circulation, and the oil quantity automatic regulating device is the oil quantity automatic regulating device.

In the embodiment, the oil inlet 2 and the oil outlet 3 are through holes with the diameter phi D1, the oil inlet 2 is the only passage for lubricating oil to enter the oil quantity automatic regulating device, and the outside of the oil inlet 2 is connected with a high-level oil tank 19 through a connecting pipe 18; the oil outlet 3 is the only passage of the lubricating oil leaving the oil quantity automatic regulating device, and the outside of the oil outlet is sequentially connected with the bearing 20 and the low-level oil tank 16 through the connecting pipe 18. For the case of less disassembly and assembly, the assembly mode of the oil inlet 2, the oil outlet 3 and the connecting pipe 18 can be welding, and for the case of frequent disassembly and assembly, the oil inlet 2, the oil outlet 3 and the connecting pipe 18 can be assembled through flanges.

Preferably, an oil filter 21 is provided on the connection pipe 18 between the oil pump 17 and the high-level oil tank 19.

When the machine is stopped, the oil pump 17 stops working, the pressure of the high-level oil tank 19 is larger than that of the low-level oil tank 16, and lubricating oil flows from the oil quantity automatic regulating device and the high-level oil tank 19 to the oil filter 21 and the low-level oil tank 16 to form backward flow. The reverse flushing is caused to the filter screen of the oil filter 21 by the reverse flushing, so that on one hand, the meshes of the filter are easily enlarged, and the filtering effect is reduced; on the other hand, causes impurities on the oil filter to wash back the oil pump 17, causing clogging of the oil pump 17. Therefore, the diameter M1 of the front end shaft section of the adjusting rod 9 is required to be larger than the oil inlet phi D1, and M1 is preferably larger than 1.5 phi D1. When the machine is stopped, if the lubricating oil starts to flow backward, the lubricating oil pushes the adjusting rod 9 to move towards the oil inlet 2, finally the conical guide head 13 is in contact with the inner wall of the oil inlet 1 to perform linear sealing, and the lubricating oil cannot flow to the oil filter 21, so that the lubricating oil can be effectively prevented from flowing backward.

The working principle of the automatic adjusting structure will be described with reference to fig. 3.

During operation, the pressure of the lubricating oil in the high-level oil tank 19 is P1, the pressure of the lubricating oil in the low-level oil tank 16 is P2, and the lubricating oil enters the oil inlet 2 under the action of the oil pressure difference Δp (Δp=p1-P2) and is accumulated in a cavity between the first regulating block 6 and the oil inlet 2. When the pressure difference of the lubricating oil is larger than the set elastic force of the spring, the lubricating oil pushes the first regulating block 6 to move right, after the lubricating oil is stabilized, the width of the first regulating flow channel 4 is L5, and the lubricating oil sequentially enters the first cavity among the first regulating flow channel 4, the guide block 8 and the first regulating block 6. The first chamber also has integrated therein springs and guide bearings 12 so that lubricating oil can lubricate them. In the process, the lubricating oil can improve the lubrication degree of the guide bearing 12 and reduce the abrasion of the guide bearing 12; avoiding rust of the spring and the guide bearing 12; and impurities generated by sliding friction are timely taken away, so that accumulated impurities and the like are avoided.

The lubricating oil of the first cavity enters the second cavity between the guide block 8 and the second regulating block 7 through the first oil hole 10, and similarly, the lubricating oil of the second cavity enters the second regulating flow passage 5 through the second oil hole 14. The first oil hole 10 is a through hole feature of the guide block 8, and has an opening near the inner wall surface of the housing 1, which is useful for reducing the amount of lubricating oil accumulated in the first cavity. The second oil hole 14 is a through hole feature of the second adjusting block 7, and the position of the opening is close to the axis of the adjusting rod 9, which is beneficial to accumulating lubricating oil in the second cavity, avoiding the lubricating oil from directly entering the second adjusting flow channel 5, and reducing the automatic adjusting function.

In stable operation, the inlet width of the second regulating flow passage 5 is L6, and the flow rate of the lubricating oil is limited. Finally, the lubricating oil reaches the oil outlet 3 through the second regulating flow passage 5, and the bearing is supplied with oil.

When the external environment changes, after the oil pressure difference DeltaP becomes large, the lubricating oil overcomes the elasticity to do work and further pushes the first regulating block 6 to move right, at the moment, the width L5 of the first regulating flow channel 4 becomes large, the lubricating oil flow rate is increased, the width L6 of the second regulating flow channel 5 becomes small, and the lubricating oil flow rate is reduced, so that balance is achieved, and the lubricating oil flow rate is kept unchanged or is changed less. Similarly, when the external environment changes, the oil pressure difference Δp becomes smaller, the balance is achieved by complementing the width change of the first adjusting flow channel 4 and the width change of the second adjusting flow channel 5.

Of course, the above is a preferred embodiment of the present invention. It should be noted that it will be apparent to those skilled in the art that several modifications and adaptations can be made without departing from the general principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (20)

1. The automatic oil quantity adjusting device is characterized by comprising a shell (1), wherein the shell (1) comprises an oil inlet (2) and an oil outlet (3), the shell (1) is provided with a cavity communicated with the oil inlet (2) and the oil outlet (3), and a flow adjusting unit for adjusting the flow of the oil outlet (3) according to the flow of the oil inlet (2) is arranged in the cavity; be provided with on the inner wall of casing (1) with first regulation runner (4) of oil inlet (2) intercommunication, and with second regulation runner (5) of oil-out (3) intercommunication, flow control unit includes first regulating block (6) and second regulating block (7), first regulating block (6) with first regulation runner (4) cooperate in order to adjust first regulation runner (4) flow, second regulating block (7) with second regulation runner (5) cooperate in order to adjust second regulation runner (5) flow.

2. An automatic oil quantity adjusting device according to claim 1, characterized in that the first adjusting block (6) and the second adjusting block (7) slide synchronously in the housing (1) between the oil inlet (2) and the oil outlet (3).

3. The oil mass automatic regulating device according to claim 2, characterized in that a guide block (8) is arranged in the shell (1), an adjusting rod (9) is slidably arranged on the guide block (8), the first regulating block (6) is arranged at a first end of the adjusting rod (9), the second regulating block (7) is arranged at a second end of the adjusting rod (9), the first regulating block (6) is positioned at a first side of the guide block (8), the second regulating block (7) is positioned at a second side, opposite to the first side, of the guide block (8), and a first oil hole (10) for communicating the first side with a second side oil way is arranged on the guide block (8).

4. An automatic oil quantity adjusting device according to claim 3, characterized in that an elastic member (11) is arranged between the first adjusting block (6) and the guide block (8), and the elastic member (11) provides an elastic force for sealing the oil inlet (2) to the adjusting rod (9).

5. An automatic oil quantity adjusting device according to claim 3, characterized in that a guide bearing (12) is fixedly arranged on the guide block (8), and the adjusting rod (9) is slidably arranged in the guide bearing (12).

6. An automatic oil quantity adjusting device according to claim 3, characterized in that one end of the adjusting rod (9) facing the oil inlet (2) is provided with a conical guide head (13).

7. An oil amount automatic adjusting device according to claim 3, characterized in that the first oil hole (10) is provided near an inner wall surface of the housing (1).

8. The oil amount automatic regulating apparatus according to claim 2, wherein the second regulating block (7) is provided with a second oil hole (14) for communicating oil passages at both ends of the second regulating block (7).

9. An oil amount automatic adjusting device according to claim 8, characterized in that the second oil hole (14) is provided near the center axis of the second adjusting block (7).

10. An automatic oil quantity adjusting device according to claim 1, characterized in that the housing (1) has an outer wall matching the shape of the first and second adjusting flow passages (4, 5).

11. An automatic oil quantity adjusting device according to claim 1, characterized in that the outlet of the second adjusting flow passage (5) is led to the oil outlet (3) by means of a slanted guiding wall (15), the slanted guiding wall (15) having an inclination of 45 °.

12. An automatic oil quantity adjusting device according to claim 1, characterized in that the first adjusting block (6) is provided at the inlet of the first adjusting flow passage (4), and the relation between the length L2 of the first adjusting block (6) and the inlet width L1 of the first adjusting flow passage (4) satisfies l2= (1.1-1.3) L1.

13. An oil quantity automatic regulating apparatus according to claim 3, characterized in that the regulating rod (9) is opposite to the oil inlet (2), and the relation between the diameter M1 of the front end shaft section of the regulating rod (9) and the diameter phid 1 of the oil inlet (2) satisfies M1>1.5 phid 1.

14. An automatic oil quantity adjusting device according to claim 4, characterized in that the effective deformation length L3 of the elastic member (11) is larger than the inlet width L4 of the second adjusting flow passage (5).

15. The oil amount automatic adjusting device according to claim 5, characterized in that the outer peripheral surface of the guide bearing (12) on the first side of the guide block (8) and the outer peripheral surface of the guide bearing (12) on the second side of the guide block (8) are arc surfaces of decreasing cross-sectional size in a direction away from the guide block (8).

16. An automatic oil quantity adjusting device according to claim 5, characterized in that the inner peripheral surface of the guide bearing (12) cooperating with the adjusting rod (9) is coated with graphite or a babbitt, the coating thickness of which is greater than 1mm.

17. An automatic oil quantity adjusting device according to claim 1, characterized in that the relation between the inlet width L1 of the first adjusting flow passage (4) and the inlet width L4 of the second adjusting flow passage (5) satisfies L4 > 1.15L1.

18. An automatic oil quantity adjusting device according to claim 1, characterized in that the first adjusting flow channel (4) and/or the second adjusting flow channel (5) are annular flow channels.

19. An oil circuit system, which is characterized by comprising a low-level oil tank (16), an oil pump (17), a connecting pipe (18), a high-level oil tank (19), an oil quantity automatic regulating device and a bearing (20), wherein the low-level oil tank (16), the oil pump (17), the high-level oil tank (19), the oil quantity automatic regulating device and the bearing (20) are sequentially connected through the connecting pipe (18) to form an oil circuit, and the oil quantity automatic regulating device is the oil quantity automatic regulating device according to any one of claims 1 to 18.

20. -oil circuit system according to claim 19, characterised in that an oil filter (21) is provided on the connection pipe (18) between the oil pump (17) and the high-level oil tank (19).