Heat dissipating oil return filter
By introducing a reinforced inner cylinder, filter assembly body, metal outer cylinder, and heat dissipation plate cover into the oil return filter, the problem of heat dissipation difficulty in existing oil return filters is solved, achieving effective temperature reduction and shock protection, and improving the heat dissipation efficiency and stability of the filter.
Patent Information
- Application Number
- CN202522129730.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-09
AI Technical Summary
Existing return oil filters are unable to effectively dissipate heat and cool down the liquid oil entering the filter, affecting normal use.
A heat-dissipating return oil filter is designed, comprising a reinforced inner cylinder, a filter assembly body, a metal outer cylinder, a heat dissipation plate cover, and a finned body. Heat is discharged through the finned body, and combined with a flow damper to prevent impact, thus achieving heat dissipation and impact protection functions.
It effectively reduces the return oil temperature, prevents impact on the filter element assembly, and improves the heat dissipation efficiency and operational stability of the filter.
Smart Images

Figure CN224672262U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil return filtration technology, specifically a heat dissipation type oil return filter. Background Technology
[0002] When filtering liquid return oil, a return oil filter is required. Existing return oil filters only perform a filtration function and are insufficient for cooling the liquid oil entering the filter, affecting its normal operation. Therefore, designing a heat-dissipating return oil filter is crucial. For example: Chinese Patent Publication No. CN211144993U discloses a return oil filter, including a cylinder, a filter element, and a head cover. The cylinder has an oil inlet and an oil outlet. A pressure relief valve is installed between the filter element and the oil inlet. The pressure relief valve includes a connecting plate located at the opening of the filter element, with a pressure relief hole on the connecting plate. An abutment plate is located on the side of the connecting plate facing the oil outlet. A drive rod passes through the connecting plate, with one end connected to the abutment plate and the other end fitted with a spring. One end of the spring abuts against the side of the connecting plate away from the oil outlet, and the other end abuts against a spring seat on the drive rod. The spring drives the abutment plate to abut against the connecting plate, forming a seal with the pressure relief hole. The abutment plate has a sealing head aligned with the pressure relief hole, and the sealing head is triangular in shape. This structure provides a return oil filter with good sealing, avoiding oil waste and saving economic costs.
[0003] Based on existing solutions and actual production and processing applications, current heat-dissipating oil return filters still have some problems, such as: Existing return oil filters prevent oil waste, but it is difficult to cool down the liquid oil entering the filter, affecting its normal operation. Therefore, we propose a heat-dissipating return oil filter to solve the problems mentioned above. Utility Model Content
[0004] The purpose of this invention is to provide a heat-dissipating return oil filter to solve the problem mentioned in the background art that while existing return oil filters avoid oil waste, it is difficult to dissipate and cool down the liquid oil entering the return oil filter, thus affecting the normal use of the return oil filter.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation type oil return filter, including a reinforced inner cylinder, a filter assembly body is provided on the outside of the reinforced inner cylinder, and a metal outer cylinder is provided on the outside of the filter assembly body, a protective cover is installed on the left side of the metal outer cylinder, and a connecting seat is provided on the right side of the metal outer cylinder. Also includes: The pressure seat body is located inside the connecting seat, and an anti-impact structure is installed on the right end of the pressure seat body. A heat dissipation plate cover is provided on the right side of the connecting seat, and a limit hole is opened inside the heat dissipation plate cover, and a limit bolt is connected inside the limit hole. The fin body is located at the right end of the heat sink cover, and a positioning seat is installed at the left end of the heat sink cover.
[0006] Preferably, both the reinforced inner cylinder and the filter assembly body are cylindrical structures, and the diameter of the filter assembly body is larger than the diameter of the reinforced inner cylinder, and the reinforced inner cylinder is hollow.
[0007] Preferably, the metal outer cylinder has uniformly distributed connecting holes inside, and the metal outer cylinder is threadedly connected to the protective cover and the connecting seat.
[0008] Preferably, the pressure seat body is engaged with the reinforcing inner cylinder and the filter assembly body, and a reinforcing rib is provided on the right side of the pressure seat body, and the reinforcing rib is arranged at an equal angle about the center of the pressure seat body.
[0009] Preferably, the anti-impact structure includes a flow-damping plate body disposed at the right end of the pressure base body, and the flow-damping plate body has an arc-shaped structure, and a load-bearing frame is installed at the lower end of the flow-damping plate body.
[0010] Preferably, the load-bearing frame and the positioning seat are engaged and connected, and the positioning seat has a cylindrical structure.
[0011] Preferably, the limiting hole is set at an equal angle with respect to the center of the heat sink cover, and the limiting bolt passes through the interior of the limiting hole.
[0012] Preferably, the fin body has an "L" shaped structure, and the fin body is set at an equal angle with respect to the center of the heat sink cover.
[0013] Preferably, the upper end of the limiting bolt is welded to an oil inlet, and the inside of the oil inlet has positioning holes distributed at equal angles.
[0014] Preferably, the inner side of the protective cover is provided with a connecting seat, and the inner side of the connecting seat is threaded with a locking bolt, and the locking bolt passes through the interior of the spring body.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: the heat dissipation type return oil filter removes heat from the liquid oil through the return oil filter, effectively improving the temperature reduction of the return oil. At the same time, the internal flow buffer plate of the return oil filter changes the flow direction of the liquid oil, realizing the anti-impact function of the internal filter element assembly of the return oil filter. 1. It is equipped with a reinforced inner cylinder, a filter assembly body and a metal outer cylinder. First, the left end of the reinforced inner cylinder is engaged with the protective cover. Then, one end of the filter assembly body is aligned with the right end of the reinforced inner cylinder and pushed until the left end of the filter assembly body is engaged with the corresponding groove of the protective cover. The filter assembly body is nested inside the metal outer cylinder. The filter assembly body is designed as a split type, which facilitates timely replacement of the filter assembly in the heat dissipation type oil return filter. 2. It is equipped with a heat sink cover, fin body and limit bolt. The left end face of the heat sink cover contacts the right end face of the connecting seat. After the limit bolt is aligned with the limit hole, it is screwed. Under the action of the limit hole, the heat sink cover and the connecting seat are tightly connected. Both the heat sink cover and the fin body are made of metal. The fin body can dissipate the heat inside the oil return filter, which facilitates the oil return filter to dissipate heat from the oil return. At the same time, it is convenient to position and fasten the internal parts. 3. It is equipped with an oil inlet and a flow-damping plate body. By tightening bolts at the connection between the pipe end and the oil inlet, liquid oil enters the interior of the connecting seat through the oil inlet and contacts the upper end of the flow-damping plate body. The arc-shaped structure of the flow-damping plate body prevents direct impact on the filter element assembly inside the return oil filter, which facilitates the anti-impact function of the heat dissipation type return oil filter. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the overall structure connecting the load-bearing frame and the flow-retardant plate body of this utility model; Figure 4 This is a schematic diagram of the overall structure connecting the heat sink cover and the fin body of this utility model; Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0017] In the diagram: 1. Reinforced inner cylinder; 2. Filter assembly body; 3. Metal outer cylinder; 4. Connecting seat; 5. Pressure seat body; 6. Reinforcing rib; 7. Load-bearing frame; 8. Flow-damping plate body; 9. Positioning seat; 10. Heat sink cover; 11. Connecting plug; 12. Fin body; 13. Limiting hole; 14. Limiting bolt; 15. Oil inlet; 16. Nameplate; 17. Connecting hole; 18. Connecting seat; 19. Spring body; 20. Engaging plate; 21. Engaging bolt; 22. Positioning hole; 23. Protective cover. Detailed Implementation
[0018] 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, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] Please see Figure 1-5 The present invention provides the following technical solution: The heat dissipation type return oil filter includes: a reinforced inner cylinder 1, a filter assembly body 2, a metal outer cylinder 3, a connecting seat 4, a pressure seat body 5, a limit bolt 14, an oil inlet 15, a nameplate 16, a connecting hole 17, a connecting seat 18, a spring body 19, a locking plate 20, a locking bolt 21, a positioning hole 22, and a protective cover 23.
[0020] Specific examples Figure 1 , Figure 2 and Figure 5 As shown, first, place the reinforced inner cylinder 1 horizontally and the protective cover 23 vertically. Engage the left end of the reinforced inner cylinder 1 with the protective cover 23. Select a suitable filter assembly body 2 and place it horizontally. The filter assembly body 2 has a cylindrical structure. Align one end opening of the filter assembly body 2 with the right end of the reinforced inner cylinder 1 and push it until the left end of the filter assembly body 2 engages with the corresponding groove of the protective cover 23. Next, align the left end of the metal outer cylinder 3 with the right side of the filter assembly body 2 and push it. The filter assembly body 2 is nested inside the metal outer cylinder 3 until the left end of the metal outer cylinder 3 contacts the protective cover 23. Rotate the metal outer cylinder 3 to connect it to the protective cover 23 via threads until the metal outer cylinder 3 is fully engaged. The left end of the cylinder 3 extends into the interior of the protective cover 23. At this time, the reinforcing inner cylinder 1, the filter assembly body 2, and the metal outer cylinder 3 are arranged from the inside out. The right end of the metal outer cylinder 3 is threadedly connected to the connecting seat 4, so that the metal outer cylinder 3 is positioned between the protective cover 23 and the connecting seat 4. The inner end of the protective cover 23 is provided with a connecting seat 18, and the inner end of the connecting seat 18 is threadedly connected with a locking bolt 21. The right end of the locking bolt 21 passes through the spring body 19, and the right end of the spring body 19 engages with the locking plate 20. When the locking bolt 21 is turned, the spring body 19 drives the locking plate 20 to contact and fit the hole inside the connecting seat 18. The filter assembly body 2 is designed as a split type, which facilitates timely replacement of the filter assembly in the heat dissipation type return oil filter.
[0021] Specific examples Figure 1 , Figure 2 and Figure 4As shown, before assembling the connecting seat 4 with the metal outer cylinder 3, the pressure seat body 5 is placed vertically. The pressure seat body 5 is engaged with the reinforced inner cylinder 1 and the filter assembly body 2. A suitable-sized heat dissipation plate cover 10 is selected and placed vertically with the end of the heat dissipation plate cover 10 connected to the positioning seat 9 facing left. The positioning seat 9 has a cylindrical structure. The positioning seat 9 is aligned with the right end of the load-bearing frame 7 and pressed down. Friction occurs between the inner wall of the positioning seat 9 and the outer wall of the load-bearing frame 7, and the positioning seat 9 and the load-bearing frame 7 are slidably connected until the left end face of the positioning seat 9 contacts the load-bearing frame 7. At this time, the load-bearing frame 7 and the positioning seat 9 are engaged, and the left end face of the heat dissipation plate cover 10 contacts the right end face of the connecting seat 4. A limiting hole 13 is opened inside the heat dissipation plate cover 10. The limiting hole 13 is set at an equal angle about the center of the heat dissipation plate cover 10. The limiting bolt 14 is aligned with the limiting hole 13 and then screwed. The outer end is provided with a threaded structure. After the limiting hole 13 is turned, the connection gap between the heat sink cover 10 and the connecting seat 4 is shortened. Under the action of the limiting hole 13, the heat sink cover 10 and the connecting seat 4 are tightly connected. The right end of the heat sink cover 10 is provided with fin bodies 12 distributed at equal angles. The fin bodies 12 have an "L" shape structure and are evenly spaced on the heat sink cover 10. A connecting plug 11 is provided at the bottom of the connecting seat 4, and an oil inlet 15 is welded to the upper end of the connecting seat 4. A nameplate 16 is attached to the front end of the connecting seat 4. When the oil inlet 15 introduces return oil, the heat generated by the return oil is concentrated inside the connecting seat 4. The oil comes into contact with the left end face of the heat sink cover 10. Both the heat sink cover 10 and the fin bodies 12 are made of metal. The fin bodies 12 can discharge the heat inside the return oil filter, which facilitates the heat dissipation of the return oil by the return oil filter. At the same time, it is convenient to position and fasten the internal parts.
[0022] Specific examples Figure 1 and Figure 3As shown, a flow-damping plate body 8 with an arc-shaped structure is installed on the right end of the pressure base body 5. A load-bearing frame 7 is welded to the bottom end of the flow-damping plate body 8, which supports the flow-damping plate body 8. The load-bearing frame 7 is placed at an incline. Reinforcing ribs 6 distributed at equal angles are installed on the right end of the pressure base body 5, which reinforce the entire pressure base body 5. When using the heat dissipation type return oil filter, the return oil guide pipe is placed above the oil inlet 15, so that the pipe end contacts the upper surface of the oil inlet 15. A bolt is tightened at the connection between the pipe end and the oil inlet 15, and the bolt is aligned with the upper end of the positioning hole 22. The positioning hole 22 is set at an equal angle with respect to the center of the oil inlet 15. When the positioning hole 22 is tightened, the distance between the oil inlet 15 and the pipe end of the return oil guide pipe is increased. The connection gap is shortened, and under the action of the positioning hole 22, the oil inlet 15 and the oil return pipe end are tightly connected. When the liquid oil enters the interior of the connecting seat 4 through the oil inlet 15, it first contacts the upper end of the flow buffer body 8. The flow buffer body 8 has an arc-shaped structure. The flow buffer body 8 changes the flow direction of the contacting liquid oil to prevent direct impact on the filter element assembly inside the oil return filter. After the liquid oil enters the interior of the reinforced inner cylinder 1, it is filtered by the filter assembly body 2 after passing through the holes inside the reinforced inner cylinder 1. After the filter assembly body 2 filters the liquid oil, it flows out through the connecting hole 17 inside the metal outer cylinder 3, which facilitates the anti-impact function of the heat dissipation type oil return filter. This is the usage method of the heat dissipation type oil return filter.
[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A heat dissipation type oil return filter, including a reinforced inner cylinder (1), a filter assembly body (2) is provided on the outside of the reinforced inner cylinder (1), and a metal outer cylinder (3) is provided on the outside of the filter assembly body (2), a protective cover (23) is installed on the left side of the metal outer cylinder (3), and a connecting seat (4) is provided on the right side of the metal outer cylinder (3). Its features are, Also includes: The pressure seat body (5) is located inside the connecting seat (4), and an anti-impact structure is installed on the right end of the pressure seat body (5). A heat sink cover (10) is provided on the right side of the connecting seat (4), and a limit hole (13) is opened inside the heat sink cover (10), and a limit bolt (14) is connected inside the limit hole (13). The fin body (12) is located at the right end of the heat sink cover (10), and a positioning seat (9) is installed at the left end of the heat sink cover (10).
2. The heat-dissipating oil return filter according to claim 1, characterized in that: Both the reinforced inner cylinder (1) and the filter assembly body (2) are cylindrical structures, and the diameter of the filter assembly body (2) is larger than the diameter of the reinforced inner cylinder (1), and the reinforced inner cylinder (1) is hollow.
3. The heat-dissipating oil return filter according to claim 1, characterized in that: The metal outer cylinder (3) has uniformly distributed connecting holes (17) inside, and the metal outer cylinder (3) is threadedly connected to the protective cover (23) and the connecting seat (4).
4. The heat-dissipating oil return filter according to claim 1, characterized in that: The pressure seat body (5) is engaged with the reinforced inner cylinder (1) and the filter assembly body (2), and a reinforcing rib (6) is provided on the right side of the pressure seat body (5), and the reinforcing rib (6) is set at an equal angle with respect to the center of the pressure seat body (5).
5. The heat-dissipating oil return filter according to claim 1, characterized in that: The anti-impact structure includes a flow-retarding plate body (8) located at the right end of the pressure seat body (5), and the flow-retarding plate body (8) has an arc-shaped structure, and a load-bearing frame (7) is installed at the lower end of the flow-retarding plate body (8).
6. The heat-dissipating oil return filter according to claim 5, characterized in that: The load-bearing frame (7) is engaged with the positioning seat (9), and the positioning seat (9) has a cylindrical structure.
7. The heat-dissipating return oil filter according to claim 1, characterized in that: The limiting hole (13) is set at an equal angle to the center of the heat sink cover (10), and the limiting bolt (14) passes through the interior of the limiting hole (13).
8. The heat-dissipating oil return filter according to claim 1, characterized in that: The fin body (12) has an "L" shaped structure, and the fin body (12) is set at an equal angle with respect to the center of the heat sink cover (10).
9. The heat-dissipating oil return filter according to claim 1, characterized in that: The upper end of the limiting bolt (14) is welded to an oil inlet (15), and the inside of the oil inlet (15) is provided with positioning holes (22) distributed at equal angles.
10. The heat-dissipating oil return filter according to claim 1, characterized in that: The inner side of the protective cover (23) is provided with a connecting seat (18), and the inner side of the connecting seat (18) is threaded with a locking bolt (21), and the locking bolt (21) passes through the inside of the spring body (19).
Citation Information
Patent Citations
Oil return filter
CN211144993U