Hydraulic device with leakage-proof protection function

Abstract

The invention discloses a hydraulic device with a leakage-proof protection function, and belongs to the technical field of hydraulic devices, the hydraulic device comprises a plunger hydraulic pump main body, one end of the plunger hydraulic pump main body is movably connected with a plunger, a protection mechanism is arranged outside the plunger, and the protection mechanism comprises a protection shell, a sheath assembly and a leakage-proof assembly. The protective shell is fixed to one end face of the plunger hydraulic pump body, and the leakage-proof assembly is also fixed to one end face of the plunger hydraulic pump body. According to the plunger hydraulic pump, through the arrangement of the sheath assembly and the leakage-proof assembly, an arranged oil filtering core can suck and filter redundant oil, and the sealing effect of a first oil sealing pad and a second oil sealing pad is matched, so that a good sealing effect is achieved on the joint of the plunger hydraulic pump body, oil leakage during working is effectively prevented, the durability and safety of the device are enhanced, and the service life of the plunger hydraulic pump is prolonged. The fixing sleeve seat and the buffering sleeve shell are matched to form an oil leakage prevention channel, and the buffering sleeve shell is provided with a liquid leakage detection sensor which can detect the oil leakage condition.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic devices, and in particular relates to a hydraulic device with anti-leakage protection. Background Art

[0002] The traditional piston pump sealing structure often adopts a single sealing ring or sealing ring. This structure is prone to sealing failure when running for a long time or being subjected to large pressure fluctuations, resulting in hydraulic oil leakage, affecting the performance and reliability of the pump. At present, during the operation of the existing hydraulic piston pump, the plunger of the hydraulic piston pump will cause the vibration amplitude of the hydraulic cylinder to increase due to the continuous repetitive work and contact with the machine. In this way, the hydraulic oil leakage is prone to occur during the extension and retraction process of the plunger, which reduces the working efficiency of the hydraulic cylinder and even causes the hydraulic cylinder to malfunction. In addition, the plunger is prone to corrosion damage when working in a dusty environment for a long time, and dust and corrosive substances can easily enter the interior of the plunger hydraulic pump when the plunger reciprocates, causing damage to the entire pump. In addition, long-term operation can easily cause the plunger temperature to be too high, resulting in abnormal working. Therefore, a hydraulic device with leakage protection is needed to solve the problems existing in the prior art. Summary of the invention

[0003] The object of the present invention is to provide a hydraulic device with anti-leakage protection to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydraulic device with anti-leakage protection, comprising a plunger hydraulic pump body, one end of the plunger hydraulic pump body is movably connected to a plunger, a protective mechanism is arranged on the outside of the plunger, the protective mechanism comprises a protective shell, a sheath assembly and an anti-leakage assembly, the protective shell is fixed on one end face of the plunger hydraulic pump body, the anti-leakage assembly is also fixed on one end face of the plunger hydraulic pump body, and the sheath assembly is arranged on one side of the anti-leakage assembly.

[0005] It should be noted in the scheme that the leakage prevention component includes a fixed sleeve and an oil filter core, the fixed sleeve is fixed on one end face of the plunger hydraulic pump body, the oil filter core is embedded and fixed in the inner cavity of the fixed sleeve, a receiving groove is provided between the fixed sleeve and the oil filter core, a first oil seal is fixed in the receiving groove on one side of the oil filter core, a second oil seal is fixed in the receiving groove on the other side of the oil filter core, and a telescopic through-hole is opened inside the oil filter core.

[0006] It is further worth explaining that the sheath assembly includes a buffer shell and a leakage detection sensor, the leakage detection sensor is fixed to the lower part of the side surface of the buffer shell, the detection end of the leakage detection sensor extends into the buffer shell, a telescopic slide is fixed to the side surface of the buffer shell, a telescopic guide hole is opened on one end surface of the telescopic slide, a telescopic guide rod is fixed to one end surface of the plunger hydraulic pump body, and a buffer spring is arranged on one side of the telescopic slide.

[0007] It should be further explained that a reciprocating push plate is fixed to one end of the plunger, one end of the buffer spring is fixed to the telescopic slide, the other end of the buffer spring is fixed to the end face of the reciprocating push plate, the telescopic guide rod is slidably connected to the telescopic guide hole of the telescopic slide, and the telescopic guide rod slides through the reciprocating push plate.

[0008] As a preferred embodiment, a cooling water trough is provided inside the protective shell, a translation groove is provided on the inner wall of the protective shell, a translation slider is fixed to one end of the reciprocating push plate, and the translation slider is slidably connected in the translation groove of the protective shell.

[0009] As a preferred embodiment, an air cooling mechanism is arranged above the protective shell, and the air cooling mechanism includes a fan assembly shell, a heat dissipation fan and a heat-conducting pin. The fan assembly shell is fixed at the upper end surface of the protective shell, the heat dissipation fan is fixed at the upper part of the fan assembly shell, and the heat-conducting pin is fixed on the inner top wall of the fan assembly shell.

[0010] As a preferred embodiment, the sleeve of the heat dissipation fan is connected to the fan assembly shell, the lower end of the heat-conducting plug extends into the cooling water tank of the protective shell, the upper end surface of the protective shell is provided with a sealing through hole, and the heat-conducting plug is inserted into the sealing through hole of the protective shell.

[0011] As a preferred embodiment, a connecting duct is fixed to the side of the protective shell, one end of the connecting duct is provided on one side of the reciprocating push plate, the other side of the connecting duct is provided on the reciprocating push plate, and a water outlet is provided between the reciprocating push plate and the inner top wall of the protective shell.

[0012] As a preferred embodiment, a liquid inlet port is provided in the middle of one end surface of the protective shell, and a sealing plug is threadedly connected to the liquid inlet port of the protective shell.

[0013] As a preferred embodiment, one end of the buffer shell is fixed to the inner end wall of the protective shell, and the buffer shell and the fixing sleeve are butt-jointed and fixed.

[0014] Compared with the prior art, the hydraulic device with anti-leakage protection provided by the present invention has at least the following beneficial effects: By means of the protective mechanism, the plunger is in a relatively sealed double-layer isolation space during operation, thereby reducing the trouble of the plunger being contaminated by external dirt and the dirt entering the interior of the plunger hydraulic pump body during the reciprocating piston sliding process.

[0015] Through the set sheath assembly and anti-leakage assembly, the set oil filter element can absorb and filter excess oil and cooperate with the sealing effect of the first oil seal gasket and the second oil seal gasket, so as to perform a good sealing effect on the connection of the plunger hydraulic pump body, effectively prevent oil leakage during operation, enhance the durability and safety of the device, and the fixed sleeve and the buffer sleeve shell cooperate to form an anti-leakage channel for oil leakage, and a leakage detection sensor is provided on the buffer sleeve shell to detect oil leakage.

[0016] Through the air cooling mechanism and reciprocating push plate, the filled coolant can cool the reciprocating plunger, and the pushing effect of the reciprocating push plate can promote the fluidity of the coolant and enhance the heat dissipation to cooperate with the rapid heat conduction of the thermal conductive plug. The heat dissipation fan absorbs air from the thermal conductive plug to further improve the thermal environment inside the protective shell, thereby ensuring that the plunger has a good and efficient cooling and maintenance effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional diagram of the cross-sectional structure of the protective housing of the present invention; Figure 3 A three-dimensional diagram of the plunger structure of the present invention; Figure 4 It is a three-dimensional diagram of the structure of the leak-proof component of the present invention; Figure 5 It is a three-dimensional diagram of the reciprocating push plate structure of the present invention; Figure 6 It is a three-dimensional diagram of the structure of the sheath assembly of the present invention; Figure 7 It is a three-dimensional diagram of the buffer spring structure of the present invention; Figure 8 It is a three-dimensional diagram of the buffer shell structure of the present invention; Fig. 9 It is a three-dimensional diagram of the cross-sectional structure of the fixing sleeve of the present invention; Fig.10 It is a three-dimensional diagram of the air cooling mechanism structure of the present invention; Fig.11 It is a three-dimensional diagram of the protective shell structure of the present invention.

[0018] In the figure: 1. plunger hydraulic pump body; 2. plunger; 3. protection mechanism; 4. protection shell; 5. sleeve assembly; 6. anti-leakage assembly; 7. fixed sleeve; 8. oil filter core; 9. receiving groove; 10. first oil seal; 11. second oil seal; 12. telescopic perforation; 13. buffer sleeve; 14. telescopic slide; 15. telescopic guide hole; 16. telescopic guide rod; 17. buffer spring; 18. leakage detection sensor; 19. reciprocating push plate; 20. cooling water trough; 21. translation slide; 22. translation slide; 23. connecting duct; 24. sealing plug; 25. liquid inlet port; 26. air cooling mechanism; 27. fan assembly shell; 28. heat dissipation fan; 29. ​​thermal conductive plug; 30. sealing perforation. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Specific embodiment 1 See also Figure 1-11 The present invention provides a hydraulic device with leakage protection, including a plunger hydraulic pump body 1, one end of the plunger hydraulic pump body 1 is movably connected with a plunger 2, a protection mechanism 3 is arranged outside the plunger 2, the protection mechanism 3 includes a protection shell 4, a sheath assembly 5 and a leakage prevention assembly 6, the protection shell 4 is fixed on one end surface of the plunger hydraulic pump body 1, the leakage prevention assembly 6 is also fixed on one end surface of the plunger hydraulic pump body 1, and the sheath assembly 5 is arranged on one side of the leakage prevention assembly 6.

[0021] It is worth to explain in detail that one end of the buffer shell 13 is fixed on the inner end wall of the protective shell 4 , and the buffer shell 13 and the fixed sleeve 7 are butt-jointed and fixed.

[0022] Working principle of the plunger hydraulic pump: When the plunger pump is working, the plunger will be forced to make up and down reciprocating motion under the action of the cam on the injection pump camshaft and the plunger spring, thereby completing the oil pumping task. The oil pumping process can be divided into two stages: the oil inlet process and the oil return process. When the plunger is pulled outward, the pressure in the working chamber decreases and the outlet valve is closed. When it is lower than the inlet pressure, the inlet valve opens and the liquid enters; when the plunger is pushed inward, the pressure in the working chamber increases and the inlet valve closes. When it is higher than the outlet pressure, the outlet valve opens and the liquid is discharged. When the transmission shaft drives the cylinder body to rotate, the swash plate pulls the plunger out of the cylinder body or pushes it back to complete the oil suction and discharge process. The oil in the working chamber composed of the plunger and the cylinder hole is connected to the suction and discharge chambers of the pump through the oil distribution plate. The variable mechanism is used to change the inclination angle of the swash plate. The displacement of the pump can be changed by adjusting the inclination angle of the swash plate.

[0023] This solution has the following working process: when in use, the fixed sleeve 7 and the buffer sleeve 13 are covered on the outside of the plunger 2, and the protective shell 4 is covered on the outside of the fixed sleeve 7 and the buffer sleeve 13, so that the plunger 2 is in a relatively sealed double-layer isolation space during operation, thereby reducing the trouble of the plunger 2 being contaminated by external stains and causing the stains to enter the inside of the plunger hydraulic pump body 1 during the reciprocating piston sliding process.

[0024] According to the above working process, it can be known that the plunger 2 is in a relatively sealed double-layer isolation space during operation, thereby reducing the trouble of the plunger 2 being contaminated by external stains and causing the stains to enter the interior of the plunger hydraulic pump body 1 during the reciprocating piston sliding process. Specific embodiment 2 See also Figure 1-11 The present invention provides a hydraulic device with leakage protection, including a plunger hydraulic pump body 1, one end of the plunger hydraulic pump body 1 is movably connected with a plunger 2, a protection mechanism 3 is arranged outside the plunger 2, the protection mechanism 3 includes a protection shell 4, a sheath assembly 5 and a leakage prevention assembly 6, the protection shell 4 is fixed on one end surface of the plunger hydraulic pump body 1, the leakage prevention assembly 6 is also fixed on one end surface of the plunger hydraulic pump body 1, and the sheath assembly 5 is arranged on one side of the leakage prevention assembly 6.

[0026] It is worth explaining in detail that the leakage prevention component 6 includes a fixed sleeve 7 and an oil filter core 8. The fixed sleeve 7 is fixed on one end face of the plunger hydraulic pump body 1. The oil filter core 8 is embedded and fixed in the inner cavity of the fixed sleeve 7. A receiving groove 9 is provided between the fixed sleeve 7 and the oil filter core 8. A first oil seal 10 is fixed in the receiving groove 9 on one side of the oil filter core 8, and a second oil seal 11 is fixed in the receiving groove 9 on the other side of the oil filter core 8. A telescopic through-hole 12 is provided inside the oil filter core 8.

[0027] It is worth explaining in detail that the sheath assembly 5 includes a buffer shell 13 and a leakage detection sensor 18. The leakage detection sensor 18 is fixed to the lower part of the side surface of the buffer shell 13. The detection end of the leakage detection sensor 18 extends into the buffer shell 13. A telescopic slide 14 is fixed to the side surface of the buffer shell 13. A telescopic guide hole 15 is opened on one end face of the telescopic slide 14. A telescopic guide rod 16 is fixed to one end face of the plunger hydraulic pump body 1, and a buffer spring 17 is arranged on one side of the telescopic slide 14.

[0028] This scheme has the following working process: when the plunger 2 is running, a fixed sleeve 7 is provided in the telescopic area of ​​the plunger 2, and an oil filter core 8 with an oil absorption function and a first oil seal gasket 10 and a second oil seal gasket 11 for preventing leakage at the front and rear are arranged in the fixed sleeve 7. The set oil filter core 8 can absorb and filter excess oil and cooperate with the sealing effect of the first oil seal gasket 10 and the second oil seal gasket 11, so that a good sealing effect is performed on the connection of the plunger hydraulic pump body 1, which effectively prevents oil leakage during operation and enhances the durability and safety of the device. In addition, the fixed sleeve 7 and the buffer sleeve 13 cooperate to form an anti-leakage channel for oil leakage, and a leakage detection sensor 18 is provided on the buffer sleeve 13 to detect oil leakage.

[0029] According to the above working process, it can be known that the set oil filter element 8 can absorb and filter excess oil and cooperate with the sealing effect of the first oil seal gasket 10 and the second oil seal gasket 11, so as to perform a good sealing effect on the connection of the plunger hydraulic pump body 1, effectively prevent oil leakage during operation, enhance the durability and safety of the device, and the fixed sleeve 7 and the buffer sleeve shell 13 cooperate to form an anti-leakage channel for oil leakage, and the buffer sleeve shell 13 is provided with a leakage detection sensor 18 to detect oil leakage. Specific embodiment 3 See also Figure 1-11 The present invention provides a hydraulic device with leakage protection, including a plunger hydraulic pump body 1, one end of the plunger hydraulic pump body 1 is movably connected with a plunger 2, a protection mechanism 3 is arranged outside the plunger 2, the protection mechanism 3 includes a protection shell 4, a sheath assembly 5 and a leakage prevention assembly 6, the protection shell 4 is fixed on one end surface of the plunger hydraulic pump body 1, the leakage prevention assembly 6 is also fixed on one end surface of the plunger hydraulic pump body 1, and the sheath assembly 5 is arranged on one side of the leakage prevention assembly 6.

[0031] It is worth explaining in detail that a reciprocating push plate 19 is fixed to one end of the plunger 2, one end of the buffer spring 17 is fixed to the telescopic slide 14, the other end of the buffer spring 17 is fixed to the end face of the reciprocating push plate 19, the telescopic guide rod 16 is slidably connected to the telescopic guide hole 15 of the telescopic slide 14, and the telescopic guide rod 16 slides through the reciprocating push plate 19.

[0032] It is worth mentioning that a cooling water trough 20 is provided inside the protective shell 4, a translation groove 21 is provided on the inner wall of the protective shell 4, a translation slider 22 is fixed to one end of the reciprocating push plate 19, and the translation slider 22 is slidably connected in the translation groove 21 of the protective shell 4.

[0033] It is worth mentioning that an air cooling mechanism 26 is arranged above the protective shell 4, and the air cooling mechanism 26 includes a fan assembly shell 27, a heat dissipation fan 28 and a heat conductive plug 29. The fan assembly shell 27 is fixed at the upper end surface of the protective shell 4, the heat dissipation fan 28 is fixed at the upper part of the fan assembly shell 27, and the heat conductive plug 29 is fixed on the inner top wall of the fan assembly shell 27.

[0034] It is worth mentioning that the sleeve of the heat dissipation fan 28 is connected to the fan assembly shell 27, the lower end of the heat-conducting pin 29 extends into the cooling water tank 20 of the protective shell 4, and the upper end surface of the protective shell 4 is provided with a sealing through hole 30, and the heat-conducting pin 29 is inserted into the sealing through hole 30 of the protective shell 4.

[0035] It is worth mentioning that a connecting duct 23 is fixed to the side of the protective shell 4, one end of the connecting duct 23 is provided on one side of the reciprocating push plate 19, and the other side of the reciprocating push plate 19 is provided on the connecting duct 23, and a water outlet is provided between the reciprocating push plate 19 and the inner top wall of the protective shell 4.

[0036] It is worth to explain in detail that a liquid inlet port 25 is opened in the middle of one end surface of the protective shell 4 , and a sealing cock 24 is threadedly connected in the liquid inlet port 25 of the protective shell 4 .

[0037] This solution has the following working process: during use, a reciprocating push plate 19 is provided at one end of the plunger 2. The reciprocating push plate 19 cooperates with the coolant filled in the protective shell 4 to push the coolant back and forth. The filled coolant can cool the reciprocating plunger 2, and the pushing effect of the reciprocating push plate 19 can promote the fluidity of the coolant and enhance the heat dissipation to cooperate with the rapid heat conduction of the heat-conducting plug 29. The heat dissipation fan 28 also absorbs air from the heat-conducting plug 29 to draw out heat, which can further improve the thermal environment inside the protective shell 4, thereby ensuring that the plunger 2 has a good and efficient cooling and maintenance effect.

[0038] According to the above working process, it can be known that the filled coolant can cool the reciprocating plunger 2, and the pushing effect of the reciprocating push plate 19 can promote the fluidity of the coolant and enhance the heat dissipation to cooperate with the rapid heat conduction of the heat-conducting pin 29. In addition, the heat dissipation fan 28 absorbs air from the heat-conducting pin 29 to draw out heat, which can further improve the thermal environment inside the protective shell 4, thereby ensuring that the plunger 2 has a good and efficient cooling and maintenance effect.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Although the embodiments of the present invention have been shown and described, the patent scope of the present invention is not limited thereby. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention. Regarding the contents of the embodiments of the present invention, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic device with anti-leakage protection, comprising a plunger hydraulic pump body (1), characterized in that: One end of the plunger hydraulic pump body (1) is movably connected to a plunger (2); a protective mechanism (3) is arranged outside the plunger (2); the protective mechanism (3) comprises a protective shell (4), a sheath assembly (5) and a leak-proof assembly (6); the protective shell (4) is fixed to one end surface of the plunger hydraulic pump body (1); the leak-proof assembly (6) is also fixed to one end surface of the plunger hydraulic pump body (1); and the sheath assembly (5) is arranged on one side of the leak-proof assembly (6).

2. A hydraulic device with leakage protection according to claim 1, characterized in that: The anti-leakage component (6) comprises a fixed sleeve (7) and an oil filter core (8); the fixed sleeve (7) is fixed on one end surface of a plunger hydraulic pump body (1); the oil filter core (8) is embedded and fixed in an inner cavity of the fixed sleeve (7); a receiving groove (9) is provided between the fixed sleeve (7) and the oil filter core (8); a first oil seal (10) is fixed in the receiving groove (9) on one side of the oil filter core (8); a second oil seal (11) is fixed in the receiving groove (9) on the other side of the oil filter core (8); and a telescopic through hole (12) is provided inside the oil filter core (8).

3. A hydraulic device with leakage protection according to claim 2, characterized in that: The sheath assembly (5) comprises a buffer shell (13) and a liquid leakage detection sensor (18), wherein the liquid leakage detection sensor (18) is fixed to the lower part of the side surface of the buffer shell (13), and the detection end of the liquid leakage detection sensor (18) extends into the buffer shell (13). A telescopic slide (14) is fixed to the side surface of the buffer shell (13), and a telescopic guide hole (15) is provided on one end surface of the telescopic slide (14). A telescopic guide rod (16) is fixed to one end surface of the plunger hydraulic pump body (1), and a buffer spring (17) is provided on one side of the telescopic slide (14).

4. A hydraulic device with leakage protection according to claim 3, characterized in that: A reciprocating push plate (19) is fixed to one end of the plunger (2), one end of the buffer spring (17) is fixed to the telescopic slide (14), the other end of the buffer spring (17) is fixed to the end surface of the reciprocating push plate (19), the telescopic guide rod (16) is slidably connected to the telescopic guide hole (15) of the telescopic slide (14), and the telescopic guide rod (16) slidably passes through the reciprocating push plate (19).

5. A hydraulic device with anti-leakage protection according to claim 4, characterized in that: A cooling water trough (20) is provided inside the protective shell (4), a translation slide groove (21) is provided on the inner wall of the protective shell (4), a translation slider (22) is fixed to one end of the reciprocating push plate (19), and the translation slider (22) is slidably connected in the translation slide groove (21) of the protective shell (4).

6. A hydraulic device with anti-leakage protection according to claim 5, characterized in that: An air cooling mechanism (26) is arranged above the protective shell (4), and the air cooling mechanism (26) comprises a fan assembly shell (27), a heat dissipation fan (28) and a heat-conducting plug post (29); the fan assembly shell (27) is fixed to the upper end surface of the protective shell (4), the heat dissipation fan (28) is fixed to the upper part of the fan assembly shell (27), and the heat-conducting plug post (29) is fixed to the inner top wall of the fan assembly shell (27).

7. A hydraulic device with leakage protection according to claim 6, characterized in that: The sleeve of the heat dissipation fan (28) is connected to the fan assembly shell (27), the lower end of the heat-conducting plug post (29) extends into the cooling water tank (20) of the protective shell (4), the upper end surface of the protective shell (4) is provided with a sealing through hole (30), and the heat-conducting plug post (29) is inserted into the sealing through hole (30) of the protective shell (4).

8. A hydraulic device with leakage protection according to claim 7, characterized in that: A connecting conduit (23) is fixed to the side of the protective shell (4), one end of the connecting conduit (23) is provided on one side of the reciprocating push plate (19), the other side of the connecting conduit (23) is provided on the reciprocating push plate (19), and a water outlet is provided between the reciprocating push plate (19) and the inner top wall of the protective shell (4).

9. A hydraulic device with leakage protection according to claim 8, characterized in that: A liquid inlet port (25) is provided in the middle of one end surface of the protective shell (4), and a sealing cock (24) is threadedly connected to the liquid inlet port (25) of the protective shell (4).

10. A hydraulic device with anti-leakage protection according to claim 9, characterized in that: One end of the buffer shell (13) is fixed to the inner end wall of the protective shell (4), and the buffer shell (13) and the fixing sleeve (7) are butt-jointed and fixed.

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