A cylinder-driven large plunger hydraulic cylinder plunger surface oil collecting device

Abstract

The utility model discloses a large -scale plunger hydraulic cylinder plunger surface oil collecting device of cylinder motion belongs to mechanical design field. This oil collecting device sets up the rubber oil collecting ring with 120 degree inclined bench in the plunger bottom edge, and the oil collecting ring bottom is connected through the oil guide pipe and is communicated the oil collecting tank with the multiple functions of air collection filter, liquid level detection, clean sewage, and the oil collecting tank is also communicated through the oil pump and the main oil tank for the oil supply of hydraulic cylinder cylinder body, realizes the collection of plunger surface oil, and the repeated cyclic utilization of the collected oil is carried out, avoids the environmental pollution and the security hidden danger that oil drops to the ground brings to, greatly improves the utilization of hydraulic oil, and reduces the resource waste.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical design, specifically relating to an oil collection device on the surface of a cylinder-driven large plunger hydraulic cylinder. Background Technology

[0002] Piston-type hydraulic cylinders are core actuators in hydraulic systems, playing a dominant role, especially in applications requiring high thrust and long stroke. The main working cylinder of large forging equipment employs a piston-driven structure, where the piston extends and retracts while the cylinder body remains stationary. Since the piston cylinder is a single-acting hydraulic cylinder, its retraction requires the cooperation of another set of return piston cylinders. Furthermore, the piston surface is susceptible to wear, corrosion, and cavitation. Improper operation can easily lead to seal damage, component fatigue, and piston seizure. Therefore, return piston cylinders often adopt a cylinder-driven structure—the piston remains stationary while the cylinder body moves, achieving cyclic operation through the cooperation of the main working cylinder and the return piston cylinder.

[0003] As the service life of cylinder-driven hydraulic cylinder equipment increases, the lifespan of the seals in the plunger area gradually shortens. This not only makes it prone to large-scale oil leakage due to temperature differences during shutdown, but also causes oil leakage and waste when replacing the seals, resulting in many inconveniences for equipment maintenance personnel and on-site workers. The specific problems are as follows: 1) Environmental pollution: After oil drips onto the ground, equipment base, or other working environments, the area needs to be cleaned frequently, which increases maintenance costs and causes serious environmental pollution; 2) Resource waste: Hydraulic oil is expensive, and continuous oil dripping will cause a large amount of resource waste; 3) Safety hazards: The oil has lubricating properties, and if it is not cleaned in time, it can easily cause on-site workers to slip and fall, posing a great safety risk.

[0004] To solve the above problems, there is an urgent need for an oil collection device to collect hydraulic oil and recycle it. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a device for collecting oil on the surface of a cylinder-driven large plunger hydraulic cylinder. This device achieves the collection and repeated recycling of oil on the surface of the plunger by setting an oil collecting ring at the bottom of the plunger and connecting an oil collecting tank below the oil collecting ring. The oil collecting tank is connected to the main oil tank through an oil pump. The purpose of this utility model is achieved through the following technical solution: a plunger fixed to the ground and a hydraulic cylinder body slidably sleeved on the outer wall of the plunger. The upper end of the hydraulic cylinder body is connected to the moving parts of the equipment in a cylinder-driven manner. The inner wall of the hydraulic cylinder body is provided with a guide sleeve for limiting the position of the plunger. A sealing component for sliding sealing and fixing is provided between the plunger and the hydraulic cylinder body. An oil collecting ring for collecting oil on the surface of the plunger is sleeved on the bottom of the plunger. The oil collecting ring is also connected to an oil collection tank for collecting oil in the oil collecting ring.

[0006] Furthermore, the sealing assembly includes a sealing ring, a gland, and connecting bolts. The sealing ring is disposed between the plunger, the hydraulic cylinder body, and the guide sleeve, and is fixed to the end of the hydraulic cylinder body by the gland to achieve a limiting position. The gland and the hydraulic cylinder body are fixed together by connecting bolts.

[0007] Furthermore, the oil collecting ring is connected to the oil collecting tank via an oil guide pipe.

[0008] Furthermore, the oil collecting ring is fixed to the outer peripheral wall of the plunger by a clamp, and the edge of the oil collecting ring is provided with an inclined platform to facilitate the collection of oil.

[0009] Furthermore, the angle between the inclined platform and the horizontal plane is 120°.

[0010] Furthermore, the top of the oil collection tank is fixed with an air filter for balancing internal and external air pressure and isolating impurities in the air, and a drain hole is opened at the bottom. Inside, there is a magnetic rod for adsorbing ferromagnetic impurities in the oil, and the magnetic rod is detachably connected to the oil collection tank.

[0011] Furthermore, the magnetic rod includes a handle and an adsorption rod. The top of the oil collection tank has a threaded hole that matches the outer periphery of the handle, enabling a detachable connection between the magnetic rod and the oil collection tank. The adsorption rod is set along the height direction of the oil collection tank, and its length is less than the height of the oil collection tank.

[0012] Furthermore, a level switch for detecting the oil level is also provided on the top side of the oil collection tank, and an audible and visual alarm is provided on the top of the oil collection tank. The level switch and the audible and visual alarm are electrically connected and both are connected to a power source.

[0013] Furthermore, an oil pump is fixedly installed on the side of the oil collection tank. The oil collection tank is connected to the main oil tank for supplying hydraulic oil to the hydraulic cylinder body through the oil pump. The oil pump is electrically connected to the liquid level switch through a signal transmission line and is connected to the power supply.

[0014] Furthermore, a filter element for filtering impurities in the oil is installed between the oil collection tank and the oil pump.

[0015] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: 1) This utility model solves the problem of hydraulic oil leakage and waste caused by the aging of seals by setting an oil collecting ring at the bottom of the hydraulic cylinder plunger and connecting an oil collecting tank below the oil collecting ring. It can realize oil collection and reuse, and reduce resource waste. 2) This utility model can achieve air circulation and clean sewage discharge inside the oil collection tank by installing an air filter and opening a drain port on the oil collection tank; 3) This utility model is also equipped with an oil level detection alarm device and an oil pump. The oil pump receives the oil limit signal through the signal transmission line and transfers the oil in the oil collection tank to the main oil tank of the equipment, realizing the repeated recycling of hydraulic oil.

[0016] In summary, this invention effectively collects and reuses hydraulic oil dripping from the surface of a cylinder-driven plunger, avoiding environmental pollution and safety hazards caused by oil dripping onto the ground, greatly improving the utilization rate of hydraulic oil and reducing resource waste. Attached Figure Description

[0017] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the oil collection device of this utility model.

[0020] Wherein: 1 is the plunger; 2 is the hydraulic cylinder body; 3 is the guide sleeve; 4 is the sealing assembly; 41 is the sealing ring; 42 is the gland; 43 is the connecting bolt; 5 is the oil collecting ring; 6 is the oil collecting tank; 7 is the oil guide pipe; 8 is the air filter; 9 is the magnetic rod; 91 is the handle; 92 is the adsorption rod; 10 is the drain hole; 11 is the liquid level switch; 12 is the audible and visual alarm; 13 is the oil pump; 14 is the main oil tank; 15 is the filter element. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0023] See Figure 1As shown, a cylinder-driven large plunger hydraulic cylinder plunger surface oil collection device includes a plunger 1 fixed to the ground and a hydraulic cylinder body 2 slidably sleeved on the outer wall of the plunger 1. The upper end of the hydraulic cylinder body 2 forms a cylinder-driven connection with the moving parts of the equipment. Its inner wall is provided with a guide sleeve 3 for limiting the position of the plunger 1. A sealing component 4 for sliding sealing and fixing is provided between the plunger 1 and the hydraulic cylinder body 2. An oil collecting ring 5 for collecting oil on the surface of the plunger 1 is sleeved at the bottom of the plunger 1. The oil collecting ring 5 is also connected to an oil collecting tank 6 for collecting oil in the oil collecting ring 5.

[0024] Specifically, the sealing assembly 4 includes a sealing ring 41, a pressure cap 42, and a connecting bolt 43. The sealing ring 41 is disposed between the plunger 1, the hydraulic cylinder body 2, and the guide sleeve 3, and is fixed to the end of the hydraulic cylinder body 2 by the pressure cap 42 to achieve a limit. The pressure cap 42 is fixed to the hydraulic cylinder body 2 by the connecting bolt 43.

[0025] Specifically, the oil collecting ring 5 is connected to the oil collecting tank 6 through the oil guide pipe 7.

[0026] Specifically, the oil collecting ring 5 is fixed to the outer peripheral wall of the plunger 1 by a clamp, and the edge of the oil collecting ring 5 is provided with an inclined platform to facilitate the collection of oil.

[0027] Specifically, the angle between the inclined platform and the horizontal plane is 120°.

[0028] Specifically, the top of the oil collection tank 6 is fixed with an air filter 8 for balancing internal and external air pressure and isolating impurities in the air, and the bottom is provided with a drain hole 10. Inside, there is a magnetic rod 9 for adsorbing ferromagnetic impurities in the oil. The magnetic rod 9 is detachably connected to the oil collection tank 6.

[0029] Specifically, the magnetic rod 9 includes a handle 91 and an adsorption rod 92. The top of the oil collection tank 6 is provided with a threaded hole that is adapted to the periphery of the handle 91, so as to realize the detachable connection between the magnetic rod 9 and the oil collection tank 6. The adsorption rod 92 is set along the height direction of the oil collection tank 6, and its length is less than the height of the oil collection tank 6.

[0030] Specifically, the top side of the oil collection tank 6 is also equipped with a level switch 11 for detecting the oil level, and the top of the oil collection tank 6 is equipped with an audible and visual alarm 12. The level switch 11 and the audible and visual alarm 12 are electrically connected and both are connected to a power source.

[0031] Specifically, an oil pump 13 is fixedly installed on the side of the oil collection tank 6. The oil collection tank 6 is connected to the main oil tank 14, which is used to supply hydraulic oil to the hydraulic cylinder body 2, through the oil pump 13. The oil pump 13 is electrically connected to the liquid level switch 11 through a signal transmission line and is connected to the power supply.

[0032] Specifically, a filter element 15 for filtering impurities in the oil is also provided between the oil collection tank 6 and the oil pump 13.

[0033] In this embodiment, the oil collecting ring 5 is a rubber ring, which will not cause wear to the plunger 1, and at the same time can play a sealing role for the plunger 1, so that the oil will not drip along the inner ring of the oil collecting ring 5; the oil guide pipe 7 is a carbon steel pipe, which is not easy to deform or break, has better rigidity, and can reduce the risk of leakage; the drain hole 10 is used to periodically clean the dirt in the oil collection tank 6; the magnetic rod 9 is a permanent magnetic rod, which can be disassembled periodically to clean the iron filings and other ferromagnetic impurities adsorbed on the surface.

[0034] It should be noted that the oil level in the oil collection tank 6 is set to an upper limit. When the level exceeds the set value, the level switch 11 will trigger an alarm, the audible and visual alarm 12 will sound, and the signal will be transmitted to the oil pump 13. After receiving the signal, the oil pump 13 will start to draw oil from the oil collection tank 6 and transport it to the main oil tank 14. The main oil tank 14 continuously supplies oil to the hydraulic cylinder body 2, realizing the recycling of oil.

[0035] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0036] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A device for collecting oil from the surface of a large, cylinder-driven plunger hydraulic cylinder, characterized in that, The device includes a plunger (1) fixed to the ground and a hydraulic cylinder body (2) slidably sleeved on the outer wall of the plunger (1). The upper end of the hydraulic cylinder body (2) is connected to the moving parts of the device in a cylinder-driven manner. The inner wall of the hydraulic cylinder body (2) is provided with a guide sleeve (3) for limiting the position of the plunger (1). A sealing assembly (4) for sliding sealing and fixing is provided between the plunger (1) and the hydraulic cylinder body (2). An oil collecting ring (5) for collecting oil on the surface of the plunger (1) is sleeved on the bottom of the plunger (1). The oil collecting ring (5) is also connected to an oil collection tank (6) for collecting oil in the oil collecting ring (5).

2. The plunger surface oil collection device according to claim 1, characterized in that, The sealing assembly (4) includes a sealing ring (41), a pressure cap (42), and a connecting bolt (43). The sealing ring (41) is disposed between the plunger (1), the hydraulic cylinder body (2), and the guide sleeve (3), and is fixed to the end of the hydraulic cylinder body (2) by the pressure cap (42) to achieve a limit. The pressure cap (42) is fixed to the hydraulic cylinder body (2) by the connecting bolt (43).

3. The plunger surface oil collection device according to claim 1, characterized in that, The oil collecting ring (5) is connected to the oil collecting tank (6) through the oil guide pipe (7).

4. The plunger surface oil collection device according to claim 1, characterized in that, The oil collecting ring (5) is fixed to the outer peripheral wall of the plunger (1) by a clamp, and its edge is provided with an inclined platform to facilitate the collection of oil.

5. The plunger surface oil collection device according to claim 4, characterized in that, The inclined plane makes an angle of 120° with the horizontal plane.

6. The plunger surface oil collection device according to claim 1, characterized in that, The top of the oil collection tank (6) is fixed with an air filter (8) for balancing the internal and external air pressure and isolating impurities in the air. The bottom is provided with a drain hole (10). The inside is provided with a magnetic rod (9) for adsorbing ferromagnetic impurities in the oil. The magnetic rod (9) is detachably connected to the oil collection tank (6).

7. The plunger surface oil collection device according to claim 6, characterized in that, The magnetic rod (9) includes a handle (91) and an adsorption rod (92). The top of the oil collection tank (6) is provided with a threaded hole that is adapted to the outer periphery of the handle (91) to realize the detachable connection between the magnetic rod (9) and the oil collection tank (6). The adsorption rod (92) is arranged along the height direction of the oil collection tank (6), and its length is less than the height of the oil collection tank (6).

8. The plunger surface oil collection device according to claim 1, characterized in that, The top side of the oil collection tank (6) is also provided with a level switch (11) for detecting the oil level. The top of the oil collection tank (6) is provided with an audible and visual alarm (12). The level switch (11) and the audible and visual alarm (12) are electrically connected and both are connected to a power source.

9. The plunger surface oil collection device according to claim 8, characterized in that, An oil pump (13) is fixedly installed on the side of the oil collection tank (6). The oil collection tank (6) is connected to the main oil tank (14) for supplying hydraulic oil to the hydraulic cylinder body (2) through the oil pump (13). The oil pump (13) is electrically connected to the liquid level switch (11) through a signal transmission line. The oil pump (13) is connected to the power supply.

10. The plunger surface oil collection device according to claim 1, characterized in that, A filter element (15) for filtering impurities in the oil is also provided between the oil collection tank (6) and the oil pump (13).

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