Rapid oil discharge device for water absorption filter element
By designing a fastening ring and tightening device for the oil discharge mechanism, the water-absorbing filter element can be quickly discharged and easily replaced, solving the problems of difficult oil discharge and environmental pollution during the hydraulic oil purification process, and improving purification efficiency and environmental friendliness.
Patent Information
- Application Number
- CN202520574262.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing water-absorbing filter elements have difficulty draining oil during the hydraulic oil purification process, which easily pollutes the operating environment. Furthermore, there is a risk of lubricating oil leakage during filter element replacement, affecting purification efficiency and environmental safety.
A quick oil discharge device for a water-absorbing filter element was designed. The oil discharge mechanism consists of a fastening ring and a tightening device. By changing the inner diameter of the fastening ring through the tightening structure, it moves along the moving guide rail to quickly discharge the oil in the filter element. Combined with the quick-release structure, it realizes convenient replacement of the filter element and recovery of the oil.
It improves purification efficiency, reduces filter replacement time, reduces lubricant consumption and environmental pollution risks, and ensures the safety and economy of the operating environment.
Smart Images

Figure CN223794415U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil purification technology, and in particular to a water-absorbing filter element for rapid oil discharge device. Background Technology
[0002] The continuous increase in water content during the use of hydraulic oil is one of the main reasons for the deterioration of oil quality. As the water content increases, the oil will gradually experience problems such as emulsification and decreased lubrication performance. In order to ensure the normal operation of hydraulic equipment, the deteriorated oil needs to be purified.
[0003] Currently, water-absorbing filter elements are widely used in the online purification process of hydraulic oil stations due to their excellent dehydration performance. However, while achieving significant dehydration effects, they also exhibit certain limitations in terms of filter element replacement and environmental safety. Existing online purification equipment requires timely replacement of the built-in filter element once it becomes saturated. After replacement, the hydraulic oil carried in the filter element must be drained before it can be transferred and disposed of according to local regulations. The removal of oil from the filter element is usually done by gravity settling, a time-consuming process that carries the risk of oil leakage. If leakage is not cleaned up promptly, it will cause environmental pollution. In short, the oil purification process suffers from problems such as difficulty in draining oil from water-absorbing filter elements and easy contamination of the operating environment.
[0004] Therefore, in view of the shortcomings of the above-mentioned solutions in actual production and implementation, modifications and improvements have been made. At the same time, in the spirit and concept of seeking excellence, and with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, a water-absorbing filter element rapid oil discharge device is specially provided to solve the technical problems of difficult oil discharge from water-absorbing filter elements and easy pollution of the operating environment during the oil purification process. Utility Model Content
[0005] The purpose of this utility model is to provide a rapid oil discharge device for water-absorbing filter elements, which solves the technical problems of difficult oil discharge and easy pollution of the operating environment during the oil purification process.
[0006] The technical solution of this utility model is implemented as follows:
[0007] A rapid oil discharge device for a water-absorbing filter element includes a filter element housing and a water-absorbing filter element disposed inside the filter element housing. The top and bottom of the filter element housing are respectively provided with an upper end cover and a lower end cover. The device includes an oil discharge mechanism, which includes a moving guide rail, a tightening device, and a fastening ring. The tightening device is used to adjust the diameter of the fastening ring. The moving guide rail is fixedly connected to the filter element housing, and a gap is provided between the moving guide rail and the filter element housing for the fastening ring to move longitudinally. The fastening ring cooperates with the tightening device, and the tightening device and the fastening ring are located between the filter element housing and the water-absorbing filter element. The fastening ring surrounds the outside of the water-absorbing filter element.
[0008] In a preferred embodiment, the top diameter of the fastening ring is larger than the bottom diameter, and the sidewall of the fastening ring is an inwardly inclined surface from top to bottom.
[0009] The fastening ring of the oil discharge mechanism designed in this scheme has an inclined structure. By tightening the structure, its inner diameter is changed, and the oil can be discharged quickly when it moves along the moving guide rail. The inclined structure of the fastening ring can avoid the filter material from adsorbing the oil again, thus ensuring the oil discharge efficiency.
[0010] In a preferred embodiment, the upper end cover and the lower end cover of the filter element fix the upper and lower ends of the moving guide rail respectively, and the oil discharge mechanism and the filter element housing together form a quick-release structure.
[0011] The oil draining mechanism is connected to the filter element housing via a moving guide rail and a fastening ring. The filter element housing, the upper end cover, and the lower end cover are sealed by the tensioning of the filter element housing. The oil draining mechanism and the filter element housing together form a quick-release structure. When the water-absorbing filter element is saturated, the filter element housing (skeleton) can be obtained through this quick-release structure.
[0012] In this design, fastening rings are arranged around the water-absorbing filter element. A tightening device is mounted on a moving guide rail, and the moving guide rail is secured to the filter element housing via the upper and lower end caps of the filter element. After the water-absorbing filter element reaches saturation, the tightening device is pre-tightened, and then moved along the moving guide rail. The movement of the tightening device is checked for impurities inside the moving guide rail that might affect its movement. The fastening rings are gradually tightened and moved along the moving guide rail to expel the oil carried by the water-absorbing filter element during the purification process. After the oil in the water-absorbing filter element is completely drained, the filter element is removed from the filter and placed in a designated area. The oil carried by the water-absorbing filter element can be returned to the oil tank through the purification equipment pipeline, further reducing losses.
[0013] Some structural and process-related descriptions:
[0014] The existing process involves rolling a metal outer skeleton and connecting it with a sealing strip to form the filter element shell, providing external support for the filter element.
[0015] In this solution, the (metal) moving guide rail is installed as follows: the sealing strip moves to both sides to provide space for the fastening ring to move. The original sealing strip position is replaced by the moving guide rail. The tightening device is installed on the moving guide rail. The fastening ring is located between the inner filter element and the outer frame. The diameter of the fastening ring can be changed by the tightening device, and it can be in close contact with the water-absorbing filter element. Pushing the tightening device on the moving guide rail causes the fastening ring to move along the surface of the filter element to achieve the purpose of oil drainage.
[0016] The main technical effects of this solution are: improved purification efficiency and greater environmental friendliness; it solves the technical problems of difficult oil discharge from water-absorbing filter elements and easy pollution of the operating environment during oil purification. Specifically, it is reflected in:
[0017] Regarding the ease of filter replacement, this device can quickly remove the lubricating oil carried in during the purification process from the water-absorbing filter, ensuring rapid filter replacement, shortening the purification time to a certain extent, improving purification efficiency, and reducing the technical difficulty of draining oil from the water-absorbing filter.
[0018] In terms of environmental protection and economic value, the current filter replacement method carries a high risk of lubricating oil dripping during filter removal, affecting the safety of the operating environment. Furthermore, the lubricating oil carried by the filter element after replacement cannot safely return to the lubricating oil tank, leading to a drop in the oil level and abnormal lubricating oil loss over time. The oil drainage mechanism mentioned in this design can drain the lubricating oil carried by the water-absorbing filter element during purification into the filter itself, and then return it to the oil tank through the purification equipment's pipeline. This reduces the environmental impact of filter replacement and abnormal lubricating oil loss, making it more environmentally friendly.
[0019] The device is cost-effective, the oil draining mechanism is inexpensive, the parts are easy to manufacture, and the internal structure is not changed during the use of the device. Only space needs to be reserved when installing the outer shell to realize the matching use of the oil draining mechanism and the water absorption filter element. At the same time, the filter element skeleton can still be retained for reuse after the filter element is saturated, further reducing control costs. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the oil discharge mechanism according to an embodiment of the present invention;
[0022] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present invention.
[0024] In the diagram, 1-moving guide rail; 2-fastening ring; 3-tightening device; 4-upper cover of filter element; 5-filter element housing; 6-water-absorbing filter element; 7-lower cover of filter element. Detailed Implementation
[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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0028] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it 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 a connection through an intermediate medium, or 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.
[0029] like Figures 1-3 As shown, a quick oil discharge device for a water-absorbing filter element includes a filter element housing 5 and a water-absorbing filter element 6 disposed inside the filter element housing 5. The top and bottom of the filter element housing 5 are respectively provided with an upper filter element cover 4 and a lower filter element cover 7. The device includes an oil discharge mechanism, which includes a moving guide rail 1, a tightening device 3, and a fastening ring 2. The tightening device 3 is used to adjust the diameter of the fastening ring 2. The moving guide rail 1 is fixedly connected to the filter element housing 5, and a gap is provided between the moving guide rail 1 and the filter element housing 5 for the fastening ring 2 to move longitudinally. The fastening ring 2 cooperates with the tightening device 3, and the tightening device 3 and the fastening ring 2 are located between the filter element housing 5 and the water-absorbing filter element 6. The fastening ring 2 surrounds the outside of the water-absorbing filter element 6.
[0030] The top diameter of the fastening ring 2 is larger than the bottom diameter, and the sidewall of the fastening ring 2 is an inclined surface that slopes inward from top to bottom.
[0031] The fastening ring 2 of the oil discharge mechanism designed in this scheme has an inclined structure. By tightening the structure, its inner diameter is changed, and the oil can be discharged quickly when it moves along the moving guide rail 1. The inclined structure of the fastening ring 2 can avoid the filter material from adsorbing the oil again, thus ensuring the oil discharge efficiency.
[0032] The upper end cover 4 and the lower end cover 7 of the filter element fix the upper and lower ends of the moving guide rail 1 respectively. The oil draining mechanism and the filter element housing 5 together form a quick-release structure.
[0033] in, Figure 3This is a schematic diagram of the internal structure of this utility model. The purpose is to show the relevant internal design and the relationship between the components in relation to the textual description of the structure. Therefore, the internal structure shown in the figure is presented in perspective to aid understanding and reference. The specific structure has been clearly explained in the text.
[0034] The oil draining mechanism is connected to the filter element housing 5 via the moving guide rail 1 and the fastening ring 2. The filter element housing 5, the filter element upper end cover 4, and the filter element lower end cover 7 are sealed by the tension of the filter element housing 5. The oil draining mechanism and the filter element housing 5 together form a quick-release structure. When the water-absorbing filter element 6 is saturated, the filter element housing 5 (skeleton) can be obtained through this quick-release structure.
[0035] In this design, the fastening ring 2 surrounds the water-absorbing filter element 6, and the tightening device 3 is installed on the moving guide rail 1. The moving guide rail 1 and the filter element housing 5 are fixed by the filter element upper end cover 4 and the filter element lower end cover 7. After the water-absorbing filter element 6 is saturated with adsorption capacity, the tightening device 3 is pre-tightened, and the tightening device 3 is pushed to move along the moving guide rail 1. The movement of the tightening device 3 is checked for impurities inside the moving guide rail 1 that may affect its movement. The fastening ring 2 is gradually tightened and moved along the moving guide rail 1 to discharge the oil carried by the water-absorbing filter element 6 during the purification process. After the oil in the water-absorbing filter element 6 is completely drained, the filter element is removed from the filter and placed in a designated area. The oil carried by the water-absorbing filter element 6 can be returned to the oil tank through the purification equipment pipeline to further reduce losses.
[0036] Some structural and process-related descriptions:
[0037] The existing process involves the metal outer skeleton being rolled up and connected to the sealing strip to form the filter element shell 5, providing external support for the filter element.
[0038] In this solution, the (metal) moving guide rail 1 is installed as follows: the sealing strip moves to both sides to provide space for the fastening ring 2 to move. The original sealing strip position is replaced by the moving guide rail 1. The tightening device 3 is installed on the moving guide rail 1. The fastening ring 2 is located between the inner filter element (water absorption filter element) and the outer frame (filter element shell). The diameter of the fastening ring 2 can be changed by the tightening device 3, and it can be in close contact with the water absorption filter element 6. Pushing the tightening device 3 on the moving guide rail 1 causes the fastening ring 2 to move along the surface of the filter element to achieve the purpose of oil drainage.
[0039] The main technical effects of this solution are: improved purification efficiency and greater environmental friendliness; it solves the technical problems of difficult oil discharge from water-absorbing filter elements and easy pollution of the operating environment during oil purification. Specifically, it is reflected in:
[0040] Regarding the ease of filter replacement, this device can quickly remove the lubricating oil carried in during the purification process from the water-absorbing filter, ensuring rapid filter replacement, shortening the purification time to a certain extent, improving purification efficiency, and reducing the technical difficulties of draining oil from the water-absorbing filter.
[0041] In terms of environmental protection and economic value, the current filter replacement method carries a high risk of lubricating oil dripping during filter removal, affecting the safety of the operating environment. Furthermore, the lubricating oil carried by the filter element after replacement cannot safely return to the lubricating oil tank, leading to a drop in the oil level and abnormal lubricating oil loss over time. The oil drainage mechanism mentioned in this design can drain the lubricating oil carried by the water-absorbing filter element during purification into the filter itself, and then return it to the oil tank through the purification equipment's pipeline. This reduces the environmental impact of filter replacement and abnormal lubricating oil loss, making it more environmentally friendly.
[0042] The device is cost-effective, the oil draining mechanism is inexpensive, the parts are easy to manufacture, and the internal structure is not changed during the use of the device. Only space needs to be reserved when installing the outer shell to realize the matching use of the oil draining mechanism and the water absorption filter element. At the same time, the filter element skeleton can still be retained for reuse after the filter element is saturated, further reducing control costs.
[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.
Claims
1. A water absorption filter core rapid oil discharge device, comprising a filter core shell and a water absorption filter core arranged inside the filter core shell, a filter core upper end cover and a filter core lower end cover are arranged at the top and bottom of the filter core shell respectively, characterized in that, The oil discharging mechanism comprises a moving guide rail, a screwing device and a fastening ring, the screwing device is used for adjusting the diameter of the fastening ring, the moving guide rail is fixedly connected with the filter core shell, and a gap for longitudinal movement of the fastening ring is arranged between the moving guide rail and the filter core shell, the fastening ring is matched with the screwing device, and the screwing device and the fastening ring are located between the filter core shell and the water absorption filter core, and the fastening ring surrounds the outside of the water absorption filter core.
2. The water-absorbing filter quick oil discharge device according to claim 1, characterized in that, The top diameter of the fastening ring is greater than the bottom diameter, and the side wall of the fastening ring is a slope that inclines inward from top to bottom.
3. The water-adsorbing filter element rapid oil discharge device according to claim 1, characterized in that, The filter core upper end cover and the filter core lower end cover are respectively fixed to the upper and lower ends of the moving guide rail, and the oil discharging mechanism and the filter core shell together constitute a quick release structure.