Electromagnetic pressure relief type lubricant supply device

Abstract

The utility model relates to an electromagnetic pressure relief type lubricant supply device which comprises a main valve body. A pump core assembly is arranged in a liquid path inner cavity of the main valve body; an oil bag communicated with the liquid path inner cavity is arranged on the main valve body; the upper end of the liquid path inner cavity is communicated with an oil inlet hole E which is connected with the lower end of the oil bag; a working inner cavity is formed in one side of the transversely arranged liquid path inner cavity; a pump core driving part is arranged in the working inner cavity and used for driving the pump core assembly to conduct or cut off the liquid path inner cavity. The device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricant supply for lubrication systems, in particular to an electromagnetic pressure relief type lubricant supply device. Background Art

[0002] At present, the lubrication supply device is generally a pump structure, or a combination of a pump and a pilot valve to achieve quantitative supply. It requires external auxiliary units, such as a one-way valve, a pressure relief valve, a safety valve and a drive mechanism, and then connects them through pipelines. The problems are that it occupies a large area, has a large pressure loss, has many parts, and is inconvenient to disassemble and assemble.

[0003] How to provide an oil supply device with flexible action, compact structure, high integration and good sealing performance has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The technical problem to be solved by the utility model is generally to provide an electromagnetic pressure relief lubricant supply device.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] In order to realize integrated supply, an electromagnetic pressure relief lubricant supply device includes a main valve body; a pump core assembly is arranged in the liquid path inner cavity of the main valve body; an oil bag connected with the liquid path inner cavity is arranged on the main valve body;

[0007] The upper end of the inner cavity of the liquid path is connected to an oil inlet hole E, and the oil inlet hole E is connected to the lower end of the oil bag;

[0008] A working inner cavity is arranged on one side of the transversely arranged liquid path inner cavity; a pump core driving part is arranged in the working inner cavity for driving the pump core component to open or close the liquid path inner cavity;

[0009] The inner cavity of the liquid path is divided into three paths, the first path is connected to the output channel; the second path is connected to the overflow channel; and the third path is connected to the pressure-limiting channel;

[0010] The overflow channel is connected to the inner cavity of the liquid path or the oil bag through the safety valve assembly;

[0011] The pressure limiting channel is connected to the inner cavity of the liquid path or the oil bag through the solenoid valve group.

[0012] As a further improvement of the above technical solution:

[0013] In order to save space, the working cavity is arranged horizontally and longitudinally; the overflow channel and the pressure-limiting channel are zigzag pipelines; the output channel is arranged vertically;

[0014] In order to achieve blocking, a reset check valve is provided between the output channel and the inner cavity of the liquid path;

[0015] An oil outlet hole H is connected to the lower end of the output channel.

[0016] In order to realize the grease output, the pump core assembly includes a guide valve sleeve sealed in the hydraulic inner cavity; a main valve channel is arranged in the guide valve sleeve, and a guide valve core is arranged in the main valve channel;

[0017] An annular groove corresponding to the oil inlet hole E is arranged on the outer side wall of the guide valve sleeve, and a liquid inlet cavity is formed between the annular groove and the inner side wall of the hydraulic cavity;

[0018] A process through hole is provided on the guide valve sleeve for connecting the liquid inlet cavity with the main valve channel;

[0019] An oil outlet cavity is connected at the outlet of the main valve channel;

[0020] The reset check valve is in the oil outlet cavity and is used for elastically abutting against the outlet of the main valve channel.

[0021] In order to drive the oil supply, the pump core driving part includes a motor reducer assembly arranged in the working inner cavity;

[0022] The shaft end of the motor reducer assembly is connected to an eccentric wheel;

[0023] A tightening valve cap is arranged at the outer end of the guide valve core; a spring portion is arranged between the tightening valve cap and the guide valve sleeve so that the tightening valve cap is in pressure contact with the side of the eccentric wheel;

[0024] The lower part of the liquid inlet cavity is connected with an oil return hole F.

[0025] In order to realize electromagnetic pressure relief, the electromagnetic valve group includes a control board arranged in the working inner cavity and an electromagnetic component electrically connected to the control board;

[0026] The electromagnetic component has a core A which is moved by electromagnetic drive and reset by a spring;

[0027] A reversing lever is hinged in the working inner cavity;

[0028] The pressure limiting passage includes a longitudinal passage having one end connected to the oil return hole F;

[0029] A guide sleeve is connected to the other end of the longitudinal channel;

[0030] A conducting valve core is slidably arranged at the center hole of the guide sleeve;

[0031] There is an overflow hole on the left side of the conduction valve core;

[0032] The oil outlet hole H is connected to a pressure relief valve hole N;

[0033] The conducting valve core slides in the longitudinal channel to achieve communication or cutoff between the overflow hole and the pressure relief valve hole N;

[0034] A process plug is provided at the end of the overflow hole;

[0035] The control board is connected with connecting wires.

[0036] In order to achieve safety and prevent overflow, the overflow channel is connected to the liquid path cavity or the oil bag through the safety valve assembly.

[0037] In order to achieve precise and effort-saving control, the reversing lever is a labor-saving lever structure.

[0038] In order to facilitate installation, a connecting sleeve is provided between the main valve body and the oil bag;

[0039] In order to facilitate installation, a mounting back plate is provided on the main valve body.

[0040] In order to improve the oil circuit, the safety valve assembly is in the longitudinal channel, one end of the safety valve assembly is communicated with the oil outlet hole H and the other end is communicated with the oil return hole F.

[0041] The oil outlet portion H is also connected to a main outlet;

[0042] In order to achieve protection, an oil bag shield is arranged on the main valve body and covers the oil bag;

[0043] In order to facilitate the expansion of multiple channels or the installation of accessories such as pressure gauges, an oil outlet process plug is provided below the oil outlet hole H.

[0044] The main valve body of the utility model is a carrier, the pump core assembly realizes the reversing lubricant, which can be oil or grease, the control board realizes circuit control, the electromagnetic component realizes electromagnetic drive, the reversing lever uses the lever principle to cleverly utilize the force arm and the full utilization of force, the eccentric wheel realizes driving, the oil bag shield realizes protection, the connecting line realizes circuit conduction, the guide sleeve realizes guidance, as an accessory, it protects the valve body, the connecting sleeve realizes transition compatible connection, the mounting back plate realizes fixation, the oil bag stores lubricant, the safety valve assembly realizes automatic protection barrier for the valve body, and the total outlet realizes output The motor reducer assembly realizes electric drive, the main valve channel realizes precise supply, the liquid inlet cavity realizes lubricant feeding, the oil outlet cavity realizes precise supply, the process through hole realizes communication, the reset one-way valve realizes cut-off, the overflow hole realizes conduction pressure relief or closure, the process plug realizes manual pressure relief, the longitudinal channel realizes the arrangement of the pressure relief channel, realizes the concentration of various accessories of the valve body, the guide valve core realizes the pushing of lubricant; the tightening valve cap realizes abutment feeding; the guide valve sleeve realizes matching to avoid wear; the core A realizes electromagnetic drive; the oil outlet process plug can be an accessory or a conduction.

[0045] The utility model has the advantages of reasonable design, low cost, firmness and durability, safety and reliability, simple operation, time-saving, labor-saving, money-saving, compact structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1It is a schematic diagram of the appearance and usage structure of the lubrication device of the utility model.

[0047] Figure 2 yes Figure 1 Schematic diagram of the internal structure of AA.

[0048] Figure 3 yes Figure 1 Schematic diagram of the BB view structure.

[0049] Figure 4 yes Figure 1 Schematic diagram of the DD view structure.

[0050] Figure 5 yes Figure 1 Schematic diagram of the CC view structure.

[0051] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0052] Among them: 1. Main valve body; 2. Pump core assembly; 3. Control board; 4. Electromagnetic component; 5. Reversing lever; 6. Eccentric wheel; 7. Oil bag shield; 8. Connecting wire; 9. Guide sleeve; 10. Connecting sleeve; 11. Mounting back plate; 12. Oil bag; 13. Safety valve assembly; 14. Main outlet; 15. Motor reducer assembly; 16. Oil outlet cavity; 17. Liquid inlet cavity; 18. Main valve channel; 19. Process through hole; 20. Reset one-way valve; 21. Overflow hole; 22. Conducting valve core; 23. Process plug; 24. Longitudinal channel; 25. Guide valve core; 26. Tightening valve cap; 27. Guide valve sleeve; 28. Core A; 29. ​​Oil outlet process plug. DETAILED DESCRIPTION

[0053] like Figure 1-6 As shown, the electromagnetic pressure relief lubricant supply device of this embodiment includes a main valve body 1, which, as a carrier, can be a conventional structure such as a square or a columnar shape; a pump core assembly 2 is arranged in the inner cavity of the liquid path of the main valve body 1, such as Figure 1-6 , its left and right movements realize quantitative oil supply; an oil bag 12 connected to the inner cavity of the liquid path is provided on the main valve body 1, which can have accordion folds, so as to realize pressure supply and oil supply;

[0054] The upper end of the inner cavity of the liquid path is connected to an oil inlet hole E, and the oil inlet hole E is connected to the lower end of the oil bag 12, so that the oil is supplied by gravity and vacuum is avoided.

[0055] In order to make full use of the space of the valve block, it is arranged horizontally and vertically, and a working inner cavity is arranged on one side of the horizontally arranged liquid path inner cavity; a pump core driving part is arranged in the working inner cavity, which is used to drive the pump core assembly 2 to conduct or cut off the liquid path inner cavity, thereby achieving conduction or cutoff;

[0056] In order to optimize the pipeline, the valve block is arranged in different heights and in a horizontal and vertical manner. The inner cavity of the liquid path is divided into three paths. The first path is connected to the output channel; the second path is connected to the overflow channel; and the third path is connected to the pressure-limiting channel. The interconnected settings realize integration.

[0057] As a specific illustration, the overflow channel is connected to the fluid path cavity or the oil bag 12 through the safety valve assembly 13;

[0058] The pressure limiting channel is connected to the inner cavity of the fluid path or the oil bag 12 through the electromagnetic valve group.

[0059] The working inner cavity is arranged horizontally and longitudinally; the overflow channel and the pressure-limiting channel are zigzag pipelines, which are arranged reasonably, reducing the pressure loss and distance of normal oil supply. By returning the oil through the zigzag line, the pressure loss can be utilized to reduce the pressure;

[0060] The output channel is set vertically to achieve fast output;

[0061] A reset check valve 20 is provided between the output channel and the inner cavity of the liquid path, thereby achieving one-way cutoff and preventing backflow;

[0062] The lower end of the output channel is connected with an oil outlet hole H, which can realize the integration and reasonable arrangement of oil supply and internal oil distribution.

[0063] like Figure 1-6 The core assembly includes a guide valve sleeve 27 sealed in the hydraulic inner cavity; a main valve channel 18 is provided in the guide valve sleeve 27, and a guide valve core 25 is provided in the main valve channel 18; compared with the solution directly installed in the hydraulic inner cavity, this solution increases the integration, reduces the difficulty of valve body processing, and improves assembly efficiency. Its control is more precise, the output lubricant is precisely quantitative, the pressure is high, and the blockage of the oil nozzle is avoided.

[0064] A process through hole 19 is provided on the guide valve sleeve 27 for connecting the liquid inlet cavity 17 with the main valve channel 18; an annular groove corresponding to the oil inlet hole E is provided on the outer wall of the guide valve sleeve 27, and a liquid inlet cavity 17 is formed between the annular groove and the inner wall of the hydraulic cavity; thereby achieving smoother supply of lubricant.

[0065] The outlet of the main valve channel 18 is connected to the oil outlet cavity 16; the reset check valve 20 is in the oil outlet cavity 16, which is used to elastically abut the outlet of the main valve channel 18, thereby realizing one-way oil supply and forming negative pressure to automatically draw lubricant into the hydraulic cavity.

[0066] In order to achieve better power output, the pump core driving part includes a motor reducer assembly 15 arranged in the working inner cavity; the shaft end of the motor reducer assembly 15 is transmission-connected with the eccentric wheel 6; thereby achieving smooth circulation oil supply.

[0067] A tightening valve cap 26 is arranged at the outer end of the guide valve core 25 to achieve abutment; a spring portion is arranged between the tightening valve cap 26 and the guide valve sleeve 27, so that the tightening valve cap 26 is in pressure contact with the side of the eccentric wheel 6, and elastic reset and eccentric wheel 6 (cam) drive to achieve smooth movement;

[0068] The lower part of the liquid inlet cavity 17 is connected with an oil return hole F. This innovation greatly simplifies the oil circuit and realizes the connection of the pressure limiting and / or safety channel.

[0069] As an improvement of the pressure limiting part, the solenoid valve group includes a control board 3 arranged in the working inner cavity and an electromagnetic component 4 electrically connected to the control board 3; through electromagnetic drive, the action is flexible and the response is sensitive.

[0070] The electromagnetic component 4 has a core A28 that is electromagnetically driven to move and reset by a spring; it is a solenoid valve core, and in order to distinguish it from other valve cores and describe its position, it is simply referred to as the core A28, which may be magnetic or non-magnetic.

[0071] A reversing lever 5 is hinged in the working inner cavity; the improvement lies in that the use of upper and lower spaces is realized, the integration is high, the volume is reduced, and the transmission linkage of the spatial position of the force is realized by using the connecting rod.

[0072] As described, the pressure limiting passage includes a longitudinal passage 24 having one end connected to the oil return hole F, thereby avoiding the oil outlet;

[0073] The other end of the longitudinal channel 24 is connected to a guide sleeve 9, which is arranged at intervals to reduce the wear of the valve body cavity and extend the service life; a guide valve core 22 slides at the center hole of the guide sleeve 9.

[0074] An overflow hole 21 is provided on the left side of the conducting valve core 22;

[0075] The oil outlet hole H is connected to a pressure relief valve hole N;

[0076] The overflow hole 21 is connected to the inner cavity of the liquid path or the oil bag 12 through the safety valve assembly 13. The conducting valve core 22 slides in the longitudinal channel 24 to realize the connection or cutoff of the overflow hole 21 with the pressure relief valve hole N; through the clever reciprocating setting of the channel, space is saved, and at the same time, the channel with pressure loss is applied to the overflow, so as to realize the return of oil through the safety valve or pressure limiting channel connected in the middle. When the pressure is greater than the set threshold, the control board 3 controls the electromagnetic part to drive the pressure limiting part to conduct, thereby realizing pressure relief and ensuring the safety of the valve body. When the valve body pressure continues to increase, the safety valve body pressure relief is started, and the pressure relief can also be carried out by manually opening the valve.

[0077] A process plug 23 is provided at the end of the overflow hole 21. When a failure occurs in the pressure limiting channel, the plug is opened to manually clean and release the pressure.

[0078] The control board 3 is connected with a connecting wire 8 to realize circuit connection.

[0079] The reversing lever 5 is a force-saving lever structure, so that less electromagnetic force is used to drive the action. At the same time, the stroke of the conducting valve core 22 is lengthened to improve the accuracy.

[0080] A connecting sleeve 10 is provided between the main valve body 1 and the oil bag 12 to improve compatibility and facilitate connection.

[0081] A mounting back plate 11 is provided on the main valve body 1 to facilitate connection and fixation.

[0082] The safety valve assembly 13 is on the longitudinal channel 24, one end of the safety valve assembly 13 is communicated with the oil outlet hole H and the other end is communicated with the oil return hole F, thereby ensuring normal pressure stabilization in the valve body.

[0083] The oil outlet portion H is also connected to a main outlet 14 to discharge a lubricant, which may be lubricating oil or lubricating grease.

[0084] An oil bag shield 7 of the oil bag 12 which covers the oil bag 12 is arranged on the main valve body 1 to realize protection and fixation.

[0085] An oil outlet process plug 29 is provided below the oil outlet hole H, which can be used as an accessory or as a port for other oil circuits.

[0086] Description of the installation process: the connecting sleeve 10 is arranged on the top of the main valve body 1, and the oil bag 12 and the oil bag 12 shield are arranged on the top of the connecting sleeve 10; the mounting back plate 11, the control board 3 and the electromagnetic component 4 are arranged on the main valve body 1; the electromagnetic component 4, the motor reducer assembly 15, the cable of the connecting line 8 and the control board 3 are connected; the eccentric wheel 6 is arranged on the output shaft of the motor reducer assembly 15, and is arranged on the main valve body 1 as a whole; the reversing lever 5 is arranged between the electromagnetic component 4 and the guide sleeve 9; the main valve body 1 is provided with a pump core assembly 2, a guide sleeve 9, and a safety valve assembly 13; the oil bag 12 is connected to the oil inlet and return holes of the pump core assembly 2 through the oil inlet hole E; the total outlet 14, the oil outlet hole H, the oil outlet hole M and the oil outlet hole of the pump core assembly 2 are connected; the oil return hole F and the oil outlet hole M can be preferably arranged between the oil inlet and return holes of the pump core assembly 2 and the oil inlet of the safety valve assembly 13;

[0087] The pressure relief valve hole N is arranged between the oil outlet of the pump core assembly 2, the oil inlet of the guide sleeve 9, and the oil inlet of the safety valve assembly 13;

[0088] Description of working process:

[0089] When the power supply and external oil pressure signal enter the control board 3 through the connecting line 8, the motor reducer assembly 15 starts, driving the eccentric wheel 6 to rotate; at the same time, it drives the piston on the pump core assembly 2 to make a reciprocating movement; the lubricant inside the oil bag 12 passes through the oil inlet hole E and is discharged from the outlet of the pump core assembly 2;

[0090] A one-way valve is provided at the outlet of the pump core assembly 2 to prevent the lubricant from flowing back;

[0091] The pumped lubricant enters the inlet of the safety valve assembly 13 through the oil outlet hole H, and is discharged from the main outlet 14 through the oil outlet hole M. This action is repeated, and the lubricant is continuously discharged.

[0092] In this process, the control board 3 controls the electromagnetic component 4 to be energized, and according to the lever principle, the reversing lever 5 keeps the reversing piston in the guide sleeve 9 in a closed state;

[0093] When the external oil pressure signal jumps, the signal enters the control board 3 through the connecting line 8. At this time, the control board 3 controls the motor reducer assembly 15 to cut off the power and the electromagnetic component 4 to lose power. The spring drives the reversing lever 5 to move the reversing piston in the guide sleeve 9, and the oil return hole of the guide sleeve 9 opens; the pressurized lubricant returns to the oil bag 12 through the pressure relief valve hole N, the oil return hole F, and the oil return hole of the longitudinal channel 24. At this time, the pressure of the total outlet 14 is relieved; when the pressure of the total outlet 14 cannot be relieved and continues to increase, the safety valve assembly 13 opens, and the lubricant returns to the oil bag 12 through the oil return hole F and the oil return hole G to protect the safety of the supply device.

[0094] The present invention is fully described for a clearer disclosure, and the prior art will not be listed one by one.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the utility model. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An electromagnetic pressure relief lubricant supply device, characterized in that: It comprises a main valve body (1); a pump core assembly (2) is arranged in the inner cavity of the liquid path of the main valve body (1); and an oil bag (12) is arranged on the main valve body (1) and is in communication with the inner cavity of the liquid path; The upper end of the inner cavity of the liquid path is connected to an oil inlet hole E, and the oil inlet hole E is connected to the lower end of the oil bag (12); A working inner cavity is arranged on one side of the transversely arranged liquid path inner cavity; a pump core driving part is arranged in the working inner cavity for driving the pump core assembly (2) to open or close the liquid path inner cavity; The inner cavity of the liquid path is divided into three paths, the first path is connected to the output channel; The second path is connected to an overflow channel; the third path is connected to a pressure limiting channel; The overflow channel is connected to the inner cavity of the fluid path or the oil bag (12) through the safety valve assembly (13); The pressure limiting channel is connected to the inner cavity of the fluid path or the oil bag (12) through the electromagnetic valve group.

2. The electromagnetic pressure relief lubricant supply device according to claim 1, characterized in that: The working inner cavity is arranged horizontally and longitudinally; the overflow channel and the pressure limiting channel are broken line pipelines; Output channel vertical setting; A reset check valve (20) is provided between the output channel and the inner cavity of the liquid path; An oil outlet hole H is connected to the lower end of the output channel.

3. The electromagnetic pressure relief lubricant supply device according to claim 1, characterized in that: The pump core assembly (2) comprises a guide valve sleeve (27) which is sealed and arranged in a hydraulic inner cavity; a main valve channel (18) is arranged in the guide valve sleeve (27), and a guide valve core (25) is arranged in the main valve channel (18); An annular groove corresponding to the oil inlet hole E is provided on the outer wall of the guide valve sleeve (27), and a liquid inlet cavity (17) is formed between the annular groove and the inner wall of the hydraulic cavity; A process through hole (19) is provided on the guide valve sleeve (27) for connecting the liquid inlet cavity (17) with the main valve channel (18); The outlet of the main valve passage (18) is connected to an oil outlet cavity (16); The reset check valve (20) is in the oil outlet inner cavity (16) and is used to elastically abut against the outlet of the main valve channel (18).

4. The electromagnetic pressure relief lubricant supply device according to claim 3 is characterized in that: The pump core driving part comprises a motor reducer assembly (15) arranged in the working inner cavity; The shaft end of the motor reducer assembly (15) is drivingly connected to an eccentric wheel (6); A tightening valve cap (26) is arranged at the outer end of the guide valve core (25); a spring portion is arranged between the tightening valve cap (26) and the guide valve sleeve (27), so that the tightening valve cap (26) is in pressure contact with the side of the eccentric wheel (6); The lower part of the liquid inlet cavity (17) is connected with an oil return hole F.

5. The electromagnetic pressure relief lubricant supply device according to claim 3, characterized in that: The solenoid valve assembly comprises a control board (3) arranged in a working inner cavity and an electromagnetic component (4) electrically connected to the control board (3); The electromagnetic component (4) has a core A (28) which is moved by electromagnetic drive and reset by a spring; A reversing lever (5) is hingedly connected in the working inner cavity; The pressure limiting passage includes a longitudinal passage (24) whose one end is connected to the oil return hole F; A guide sleeve (9) is connected to the other end of the longitudinal channel (24); A conducting valve core (22) is slidably disposed at the center hole of the guide sleeve (9); The left end of the conducting valve core (22) is provided with an overflow hole (21); The oil outlet hole H is connected to a pressure relief valve hole N; The conducting valve core (22) slides in the longitudinal channel (24) to achieve communication or cutoff between the overflow hole (21) and the pressure relief valve hole N; A process plug (23) is provided at the end of the overflow hole (21); The control panel (3) is connected with a connecting line (8).

6. The electromagnetic pressure relief lubricant supply device according to claim 3, characterized in that: The reversing lever (5) is a labor-saving lever structure.

7. The electromagnetic pressure relief lubricant supply device according to claim 3, characterized in that: A connecting sleeve (10) is provided between the main valve body (1) and the oil bag (12); A mounting back plate (11) is arranged on the main valve body (1).

8. The electromagnetic pressure relief lubricant supply device according to claim 5, characterized in that: The safety valve assembly (13) is on the longitudinal passage (24), one end of the safety valve assembly (13) is in communication with the oil outlet hole H and the other end is in communication with the oil return hole F.

9. The electromagnetic pressure relief lubricant supply device according to claim 8, characterized in that: The oil outlet portion H is also connected to a main outlet (14); An oil bag shield (7) is provided on the main valve body (1) and is buckled on the oil bag (12); An oil outlet process plug (29) is arranged below the oil outlet hole H.

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