Hydraulic oil dewatering device

Abstract

A first-stage dryer, a second-stage dryer and an air filter are connected through air pipes, the first-stage dryer is connected with the air outlet end of a nitrogen source through a quick connector, the air outlet end of the air filter is connected with the air inlet end of an oil tank through a quick connector, and an exhaust port is formed in the top end of the oil tank. The first-stage dryer and the second-stage dryer adopt PC drying pipes, the left sides and the right sides of the PC drying pipes are symmetrically connected with filter screens, the space between the filter screens is filled with a silica gel drying agent, the top cover of the air filter is provided with an air outlet and a connecting rod, supporting rods are evenly distributed on the circumference of the outer side of the bottom end of the connecting rod, and the bottom end of the filter element is erected on the supporting rods; according to the device, clean and dry nitrogen is stably provided, the internal positive pressure of the oil tank of the hydraulic system is kept, external humid air is prevented from invading the oil tank, dissolved water in oil can be removed easily, and the modular design of the device enables installation and maintenance to be simpler, more convenient and faster.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic oil dehydration equipment, specifically a hydraulic oil dehydration device. Background Technology

[0002] In hydraulic systems, water is one of the most destructive contaminants. It not only reduces the lubrication performance of hydraulic oil but also causes internal corrosion and cavitation, leading to equipment damage. The presence of moisture in hydraulic oil is usually due to the introduction of moisture during mechanical operation or the penetration of water vapor from the atmosphere into the system. Moisture in the atmosphere enters the hydraulic oil tank through an air breather, especially when there are large temperature changes, where water vapor condenses into liquid water. Although this moisture is not easily detected in the early stages, it will gradually accumulate over time and affect the quality of the hydraulic oil. While an air breather can slow down the entry of moisture to some extent, it cannot completely prevent moisture intrusion, especially in high humidity environments. Utility Model Content

[0003] The purpose of this invention is to provide a hydraulic oil water removal device to address the problem that water is the most harmful and destructive contaminant in hydraulic systems. The sources of water pollution may be mechanical processes or atmospheric intrusion. Although air respirators provide some relief in hydraulic oil systems, they cannot completely prevent the intrusion of water from the atmosphere.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic oil dehydration device, comprising an oil tank, a primary dryer, a secondary dryer, an air filter, and a nitrogen source. The primary dryer, secondary dryer, and air filter are connected by air pipes. The primary dryer is connected to the outlet of the nitrogen source via a quick-connect fitting. The outlet of the air filter is connected to the inlet of the oil tank via a quick-connect fitting. An exhaust port is provided at the top of the oil tank, and the exhaust port is perpendicular to and staggered from the inlet.

[0005] Both the primary and secondary dryers are PC drying tubes. Filters are symmetrically connected to both the left and right ends of each dryer, with silica gel desiccant filling the spaces between the filters. End caps are threaded onto both the left and right ends of both dryers and are sealed by these caps. The end caps have holes for connecting to air pipes.

[0006] The air filter includes a filter canister, a filter element, and a top cover. The filter canister is a hollow shell with an upward-opening design. A detachable top cover is threaded to the top of the shell. An air outlet is provided on the top cover. A vertically downward-facing connecting rod is threaded to the center of the bottom of the top cover. Several support rods are evenly distributed on the outer circumference of the bottom end of the connecting rod. The support rods extend toward the inner wall of the filter canister. A filter element is provided between the support rod and the bottom end of the top cover, and is sleeved on the connecting rod. The bottom end of the filter element rests on the support rod, and its outer circumference is tightly fitted to the inner wall of the filter canister.

[0007] Preferably, the contact end between the end cap and the PC drying tube, and the contact end between the air tube and the end cap, are both connected with sealing rings.

[0008] Preferably, a sealing ring is connected to the contact end between the top cover and the filter barrel.

[0009] Preferably, it also includes a breather valve connected to the exhaust port of the fuel tank.

[0010] Preferably, the oil tank has an internal thread of M*. at one end of the pressure gauge, and the pressure gauge is threadedly connected to it.

[0011] Preferably, the bottom of the primary dryer and the secondary dryer are provided with several pipe support frames. The bottom of the pipe support frame is in contact with the ground, and the contact end with the primary dryer and the secondary dryer is arc-shaped, and the arc-shaped end abuts against the outer circumference of the primary dryer and the secondary dryer.

[0012] Preferably, a number of supports are evenly distributed at an angle on the outer circumference of the filter barrel, and the bottom end of the supports is in contact with the ground.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This equipment ensures a stable supply of clean, dry nitrogen gas, maintaining positive pressure within the hydraulic system's oil tank. This effectively prevents the intrusion of humid air from the outside, reducing the risk of moisture contamination of the hydraulic fluid. Simultaneously, this design helps to remove dissolved water from the oil, preventing it from affecting the hydraulic system's performance and extending the equipment's lifespan. Furthermore, the equipment's modular design simplifies and expedites installation and maintenance, reducing repair costs and downtime, and enhancing system reliability and efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the air handling module structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the interlocking structure of the filter element, connecting rod, and top cover of this utility model.

[0017] Figure 3This is a schematic diagram of the structure in which the end cap and the PC drying tube of this utility model cooperate.

[0018] Figure 4 This is a schematic diagram of the pipe support frame structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the workflow structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the installation and structure of this utility model.

[0021] In the diagram: 1. Quick-connect connector; 2. Filter screen; 3. Silica gel desiccant; 4. Air tube; 5. PC drying tube; 6. Filter canister; 7. Filter element; 8. End cap; 9. Pipe support frame. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1-6 This utility model provides an embodiment of a hydraulic oil dehydration device, comprising an oil tank, a primary dryer, a secondary dryer, an air filter, and a nitrogen source. The primary dryer, secondary dryer, and air filter are connected by air pipes 4. The primary dryer is connected to the outlet of the nitrogen source via a quick-connect fitting 1. The air source pressure is 0.5-0.8 MPa, and the maximum nitrogen flow rate is 100 L / min. The outlet of the air filter is connected to the inlet of the oil tank via the quick-connect fitting 1. The quick-connect fitting 1 is used to connect various devices to achieve airflow transmission. The quick-connect fitting 1 facilitates operation and maintenance and ensures the airflow connection is sealed to prevent gas leakage. The oil tank is used to store hydraulic oil and is divided into oil storage and air source sections. The area, along with clean nitrogen from the plant area, provides a stable gas source for the oil station, maintaining positive pressure inside the hydraulic system's oil tank to effectively prevent the intrusion of external humid air. An exhaust port is located at the top of the oil tank, connected to a protective cover. The cover is arc-shaped, with a gap between its arc end and the exhaust port via a vertically installed fixing rod. The protective cover extends circumferentially towards the top of the oil tank and includes a breather valve connected to the exhaust port. The breather valve regulates the internal pressure of the oil tank, preventing excessively high or low pressure and balancing gas flow. The breather valve design prevents damage to the oil tank due to pressure changes and facilitates gas flow. The exhaust port and air inlet are vertically aligned, with the air inlet located on the side of the oil tank. A 1 / 4″ internal thread is provided 100mm from the top of the fuel tank for connection with quick-connect fitting 1. The quick-connect fitting 1 mates with the internal thread. The air inlet is located in the fuel tank's air source area, perpendicular to and staggered from the exhaust port. The exhaust port and air inlet are perpendicular and staggered, reducing airflow resistance and promoting a more stable airflow. Both the primary and secondary dryers use PC drying tubes 5, each 50mm*260mm in size, used to remove moisture from the gas. The dryers are filled with silica gel desiccant 3, which absorbs moisture and ensures the drying of the gas. The two-stage drying process can improve drying efficiency through stage division of labor. Silica gel desiccant 3 has strong hygroscopic properties and a significant drying effect. The primary dryer... The first and second stage dryers are symmetrically connected to the left and right ends of the dryer. Silica gel desiccant 3 is placed between the filter screens 2 to ensure uniform airflow through the silica gel desiccant 3, increase the drying effect, perform preliminary filtration, and facilitate gas flow. The filter screens 2 are filled with silica gel desiccant 3. Both the first and second stage dryers are threadedly connected to end caps 8. The contact ends of the end caps 8 with the PC drying tube 5 and the contact ends of the air pipe 4 with the end caps 8 are connected to sealing rings. The end caps 8 are used to seal the interfaces of the PC drying tube 5 and the air pipe 4. At the same time, the sealing rings ensure that the gas does not leak when flowing in the dryer, and prevent external gas from entering the dryer. The end caps 8 are sealed and have holes for connecting to the air pipe 4.

[0027] The air filter includes a filtration accuracy of 1µm. The filter cartridge 6 and filter element 7 work together to effectively intercept particulate matter, removing impurities and particulate matter from the gas and ensuring gas quality. The filter cartridge 6 is a hollow shell with an upward-facing opening. A removable top cover is threaded to the top of the shell. The top cover has external threads, and a sealing ring connects the contact end between the top cover and the filter cartridge 6. An internal thread groove is formed on the shell, and the external and internal threads cooperate to facilitate installation and disassembly. The sealing ring forms a sealed shell inside the filter cartridge 6, preventing internal gas leakage and preventing external gas from entering the filter cartridge 6. The top cover has... The filter has an air outlet. A vertically downward-pointing connecting rod is threaded to the center of the bottom of the top cover. The external thread of the connecting rod mates with the internal thread groove of the top cover. During installation, the filter element 7 is fitted onto the connecting rod, with its bottom end resting on the support rod. The connecting rod is then screwed onto the top cover, and the top cover is connected to the filter cartridge 6. For maintenance, the top cover is screwed off and the connecting rod is unscrewed. The filter element 7 is then replaced. Several support rods are evenly distributed on the outer circumference of the bottom end of the connecting rod. These support rods support the bottom end of the filter element 7 and extend towards the inner wall of the filter cartridge 6. The filter element 7 is positioned between the support rod and the bottom end of the top cover. The outer circumference of the filter element 7 is tightly fitted against the inner wall of the filter cartridge 6, and its inner wall abuts against the outer circumference of the connecting rod. This allows the filter element 7 to effectively filter the gas inside the filter cartridge 6.

[0028] An M20*1.5 internal thread is provided at one end of the oil tank near the pressure gauge. Located 20mm from the top of the oil tank, the pressure gauge is threaded onto the oil tank and used to monitor the air pressure inside the tank, ensuring that the system operates within a safe pressure range. The pressure gauge facilitates real-time monitoring, ensuring stable system operation and simplifying installation and maintenance. Several pipe support brackets 9 are installed at the bottom of both the primary and secondary dryers. The bottom of the pipe support brackets 9 contacts the ground, supporting the pipes of the primary and secondary dryers. The arc-shaped design of the pipe support brackets 9 helps to distribute pressure, increase equipment stability, and prevent equipment damage caused by pressure changes. The contact ends with the primary and secondary dryers are arc-shaped, and the arc-shaped ends abut against the outer circumference of the primary and secondary dryers. Several supports are evenly distributed at an angle on the outer circumference of the filter cartridge 6, with the bottom of the supports contacting the ground. This contact effectively distributes the load and prevents the filter cartridge 6 from tilting or being damaged due to airflow changes.

[0029] During use, connect the primary dryer, secondary dryer, and air filter via air pipes, and seal the contact ends with sealing rings. Connect the primary dryer to the nitrogen source via quick-connect connector 1, and connect the air filter to the air inlet of the oil tank via quick-connect connector 1. Then, activate the valve on the air source. Nitrogen enters the primary and secondary dryers for preliminary filtration, and then enters the air filter for further filtration of impurities. After the nitrogen enters the oil tank, a positive pressure is formed in the top space of the hydraulic system oil tank. This not only prevents external humid air from entering the system, but also effectively absorbs the water dissolved in the oil, thereby achieving the purpose of water removal. During maintenance, unscrew the top cover of the filter barrel 6 via quick-connect connector 1, then unscrew the connecting rod, replace the filter element 7, and remove the end cover 8 to replace the filter screen 2 and silica gel desiccant 3.

[0030] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hydraulic oil dewatering device, characterized in that: The system includes an oil tank, a primary dryer, a secondary dryer, an air filter, and a nitrogen source. The primary dryer, secondary dryer, and air filter are connected by an air pipe (4). The primary dryer is connected to the outlet of the nitrogen source via a quick-connect fitting (1). The outlet of the air filter is connected to the inlet of the oil tank via a quick-connect fitting (1). An exhaust port is provided at the top of the oil tank. The exhaust port is perpendicular to the inlet and is staggered. Both the primary and secondary dryers are PC drying tubes (5). Filters (2) are symmetrically connected to the left and right ends of both the primary and secondary dryers. Silica gel desiccant (3) is filled between the filter screens (2). End caps (8) are threaded to the left and right ends of both the primary and secondary dryers and are sealed by the end caps (8). The end caps (8) have holes for connecting to the air pipes (4). The air filter includes a filter barrel (6), a filter element (7), and a top cover. The filter barrel (6) is a hollow shell with an upward opening. A detachable top cover is threaded to the top of the shell. An air outlet is provided on the top cover. A vertically downward connecting rod is threaded to the middle of the bottom end of the top cover. Several support rods are evenly distributed on the outer circumference of the bottom end of the connecting rod. The support rods extend toward the inner wall of the filter barrel (6). A filter element (7) is provided between the support rod and the bottom end of the top cover. It is sleeved on the connecting rod. The bottom end of the filter element (7) rests on the support rod. The outer circumference is tightly fitted to the inner wall of the filter barrel (6).

2. The hydraulic oil dewatering device according to claim 1, characterized in that: The end cap (8) and the contact end of the PC drying tube (5), and the air tube (4) and the end cap (8) are all connected with sealing rings.

3. The hydraulic oil dewatering device according to claim 2, characterized in that: The top cover is connected to the filter barrel (6) by a sealing ring at the contact end.

4. The hydraulic oil dewatering device according to claim 1, characterized in that: It also includes a breather valve, which is connected to the exhaust port of the fuel tank.

5. A hydraulic oil dewatering device according to claim 1, characterized in that: The oil tank has an M20*1.5 internal thread at one end of the pressure gauge, and the pressure gauge is connected to the thread.

6. The hydraulic oil dewatering device according to claim 1, characterized in that: The bottom of the primary dryer and the secondary dryer are provided with several pipe support frames (9). The bottom of the pipe support frame (9) is in contact with the ground and the contact end with the primary dryer and the secondary dryer is set in an arc shape, and the arc end is in contact with the outer circumference of the primary dryer and the secondary dryer.

7. A hydraulic oil dewatering device according to claim 1, characterized in that: The filter barrel (6) has several supports evenly distributed at an angle on its outer circumference, and the bottom of the supports is in contact with the ground.

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