Leakage-free hydraulic manifold block based on memory alloy

Abstract

The utility model relates to a non-leakage hydraulic manifold block based on memory alloy, which comprises an oil pressing port and an oil outlet which are used as main oil ways, at least one oil inlet and at least one oil return port which are communicated with a control element, and internal threads which can be screwed into the control element are arranged on the oil inlet and the oil return port. A sealing ring and a spring piece are sequentially arranged at the bottom of the oil inlet and the bottom of the oil return port respectively, the spring piece is a memory alloy spring piece which is in a compressed state when screwed into the control element and can reset when the sealing ring is provided with a notch, and dynamic compensation of the sealing ring is achieved. The defect that a traditional sealing ring is prone to sealing failure due to aging, abrasion or permanent compression deformation in the long-term use process is overcome.

Description

Technical Field

[0001] This application relates to the field of hydraulic mechanical component technology, specifically to the field of a leak-free hydraulic integrated block based on shape memory alloy. Background Technology

[0002] Traditional hydraulic manifolds typically rely on seals made of rubber, polytetrafluoroethylene (PTFE), or other synthetic materials to prevent oil leakage. While these materials meet basic sealing requirements, hydraulic manifolds are often used in high-pressure, high-temperature, or high-vibration environments. Over long-term use, factors such as material aging, wear, and temperature variations can cause the seals to deteriorate, leading to frequent leaks.

[0003] The aging and wear of seals not only affect the normal operation of the system, but in certain industries, hydraulic oil leaks can also cause environmental pollution and safety hazards. For example, in industries such as food processing and pharmaceuticals, leaks are particularly intolerable.

[0004] When in use, regular inspections can be performed to maintain its sealing performance. However, if the sealing of individual control components in the hydraulic integrated block becomes abnormal, it may not be able to withstand the maintenance cycle and may lead to local oil leakage. Summary of the Invention

[0005] To address the aforementioned issues, this application proposes a leak-free hydraulic manifold based on shape memory alloys. By utilizing the shape memory effect and superelastic properties of shape memory alloys, the sealing rings of the hydraulic manifold can be compensated after damage, thus maintaining their sealing effect.

[0006] To achieve the above objectives, the present application adopts the following technical solution:

[0007] A leak-free hydraulic integrated block based on shape memory alloy includes an oil pressure port and an oil outlet as the main oil circuit, and at least one oil inlet and oil return port communicating with the control element.

[0008] The oil inlet and oil outlet are provided with internal threads that allow control components to be screwed in, and the bottom of the oil inlet and oil outlet are respectively provided with a sealing ring and a spring plate.

[0009] The spring is a shape memory alloy spring that is compressed when screwed into the control element and can be reset when the sealing ring has a gap.

[0010] Thus, this application achieves dynamic compensation of the sealing ring through the application of a resettable shape memory alloy spring, overcoming the defect of traditional sealing rings that are prone to sealing failure due to aging, wear, or permanent compression deformation during long-term use. Furthermore, it can prevent the hydraulic manifold from affecting overall production due to localized oil leakage before the scheduled maintenance cycle.

[0011] In some possible implementations, the bottom of the oil inlet and oil outlet is provided with positioning grooves that can fit the sealing ring, which can prevent the sealing ring from shifting when a gap occurs.

[0012] In some preferred embodiments, the depth of the positioning groove is less than the height of the sealing ring.

[0013] In some preferred embodiments, in order to make the restoring force of the spring sheet on the sealing ring more uniform, the cross-sectional width of the spring sheet is not less than 0.5 times the cross-sectional width of the sealing ring.

[0014] In some preferred embodiments, the spring sheet has at least two turns.

[0015] In some preferred embodiments, the height of the spring sheet is no more than 0.25 times the height of the sealing ring.

[0016] In some possible implementations, the top of the sealing ring is provided with a concave wheel that can be fitted with the spring sheet.

[0017] In some possible implementations, the top of the sealing ring is provided with a V-shaped groove, and the spring sheet is a V-shaped structure that is bonded to the V-shaped groove, which can increase the contact area and improve the sealing effect. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the hydraulic integrated block of this application;

[0019] Figure 2 This is an exploded view of the hydraulic integrated block of this application;

[0020] Figure 3 This is a cross-sectional view of one embodiment of the hydraulic integrated block of this application;

[0021] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0022] Figure 5 This is a cross-sectional view of another embodiment of the hydraulic integrated block of this application;

[0023] Figure 6 yes Figure 5 A magnified view of a portion of point B in the middle. Detailed Implementation

[0024] The following examples further illustrate the features of this application and other related features in detail, so as to facilitate understanding by those skilled in the art:

[0025] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions in the attached diagrams, while the terms “bottom surface,” “top surface,” “inner,” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0026] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this case based on the specific circumstances.

[0027] Hydraulic manifolds, as key components in modern hydraulic systems, are widely used in industrial fields by integrating multiple hydraulic valves, channels, and other control elements into a compact structure.

[0028] It integrates multiple hydraulic valves, channels and other control elements into a compact structure, and can be used with various types of actuators (such as hydraulic cylinders and motors), sensors (such as pressure sensors and temperature sensors), and control valves (such as directional control valves and pressure control valves).

[0029] When hydraulic manifolds are used in industries such as food processing and pharmaceuticals, damage to the local seals can cause hydraulic oil leakage, impacting production. Therefore, when damage occurs, a compensatory mechanism is needed to ensure stable operation until the next maintenance cycle.

[0030] Please refer to Figure 1 and Figure 2 This application discloses a leak-free hydraulic integrated block based on shape memory alloy, comprising a pressure port 10 and an outlet port 20 serving as the main oil circuit, and an inlet port 1 and an outlet port 2 communicating with control elements. The number of inlet ports 1 and 2 can be determined according to the number of control elements to be connected; for clarity, only one is shown in the accompanying drawings, which communicates with the pressure port 10 and the outlet port 20 respectively.

[0031] The oil inlet 1 and oil outlet 2 are provided with internal threads for tightening control elements. In the accompanying drawings of this specification, only the internal thread is shown in the oil inlet 1 for comparison; in actual connection, the oil outlet 2 also has an internal thread. A sealing ring 3 and a spring plate 4 are respectively arranged at the bottom of the oil inlet 1 and oil outlet 2. The sealing ring 3 can be made of conventional sealing materials such as rubber, polytetrafluoroethylene (PTFE), or other synthetic materials, and its shape can be either an O-ring or a rubber ring.

[0032] The spring plate 4 is a shape memory alloy spring plate that is compressed when the control element is tightened and can reset when the sealing ring 3 has a notch. Shape memory alloys (such as NiTi) have shape memory effect and superelasticity. This means that they can return to their original shape or preset shape after deformation, which provides the sealing ring with self-healing ability.

[0033] This application utilizes the resettable characteristic of the shape memory alloy spring sheet as described above to achieve dynamic compensation of the sealing ring, overcoming the defect of traditional sealing rings that are prone to sealing failure due to aging, wear, or permanent deformation under compression during long-term use. Furthermore, it can prevent the hydraulic manifold from affecting overall production due to localized oil leakage before the scheduled maintenance cycle.

[0034] As described above, this application maintains the sealing effect and prevents hydraulic oil leakage by combining the sealing ring 3 and the spring plate 4, which can dynamically compensate for gaps in the sealing ring. It also illustrates the potential hazards of gaps in the locating ring 3 and the restoring force exerted by the spring plate 4. In some embodiments of this application, optimized solutions are provided for its stability under stress and its stress and compensation effects.

[0035] Please refer to the reference. Figure 1 and Figure 3 In some embodiments, the bottom of the oil inlet 1 and the oil return port 2 is provided with a positioning groove 31 for fitting the sealing ring 3. The positioning groove 31 can engage the sealing ring 3, preventing the sealing ring 3 from shifting when a gap occurs. That is, when the spring plate 4 applies a restoring force, it can prevent the sealing ring 3 from being forced and shifting. The accompanying drawings use the oil return port 2 as an example, and the oil inlet 1 is the same.

[0036] Furthermore, considering sealing performance, the depth of the positioning groove 31 is less than the height of the sealing ring 3. And considering that the spring plate 4 applies a more uniform restoring force, the cross-sectional width of the spring plate 4 is not less than 0.5 times the cross-sectional width of the sealing ring 3. Here, the cross-sectional width refers to the maximum cross-sectional width of the sealing body of the sealing ring 3 and the elastic body of the spring plate 4. That is, the spring plate 4 must cover at least half of the sealing ring 3 to ensure uniform force distribution.

[0037] Furthermore, to maintain a good seal and a strong restoring force, the spring plate 4 can be designed with a relatively low overall height and a strong restoring force. Therefore, it is preferable that the spring plate 4 has at least two turns. Moreover, the height of the spring plate 4 should not exceed 0.25 times the height of the sealing ring 3, thus maintaining the strength of the spring plate 4 while minimizing its impact on the sealing ring 3 itself.

[0038] As mentioned above, the presence of the spring plate 4 will affect the sealing effect of the sealing ring 3. Therefore, this application has taken effective measures to reduce the impact on the sealing ring 3.

[0039] As one example, please refer to Figure 3 and Figure 4 The top of the sealing ring 3 is provided with a concave wheel 32 that can be used to loop the spring sheet 4. The concave wheel 32 is integrally formed with the sealing ring 3. While it can hold the spring sheet 4 in place, its top will cover part of the spring sheet 4, which also reduces the impact on its restoring force.

[0040] As another embodiment, please refer to Figure 5 and Figure 6 The top of the sealing ring 3 is provided with a V-shaped groove 33, and the spring sheet 4 is a V-shaped structure that is bonded to the V-shaped groove 33, which can increase the contact area and improve the sealing effect.

[0041] As stated above, this application protects a leak-free hydraulic integrated block based on shape memory alloy, and all technical solutions that are the same as or similar to this application should be considered to fall within the protection scope of this application.

Claims

1. A leak-free hydraulic integrated block based on shape memory alloy, comprising an oil pressure port (10) and an oil outlet (20) serving as the main oil circuit, and at least one oil inlet (1) and an oil return port (2) communicating with a control element; Its features are, The oil inlet (1) and oil outlet (2) are provided with internal threads that allow control elements to be screwed in, and the bottom of the oil inlet (1) and oil outlet (2) are respectively provided with a sealing ring (3) and a spring plate (4); The spring sheet (4) is a shape memory alloy spring sheet that is in a compressed state when screwed into the control element and can be reset when the sealing ring (3) has a gap.

2. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 1, characterized in that, The bottom of the oil inlet (1) and the oil return port (2) are provided with positioning grooves (31) that can be fitted around the sealing ring (3).

3. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 2, characterized in that, The depth of the positioning groove (31) is less than the height of the sealing ring (3).

4. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 1, characterized in that, The cross-sectional width of the spring sheet (4) is not less than 0.5 times the cross-sectional width of the sealing ring (3).

5. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 1, characterized in that, The spring sheet (4) has at least 2 turns.

6. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 5, characterized in that, The height of the spring sheet (4) is no more than 0.25 times the height of the sealing ring (3).

7. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 1, characterized in that, The top of the sealing ring (3) is provided with a concave wheel (32) that can be fitted into the spring sheet (4).

8. The leak-free hydraulic integrated block based on shape memory alloy as described in claim 1, characterized in that, The top of the sealing ring (3) is provided with a V-shaped groove (33), and the spring sheet (4) is a V-shaped structure that is bonded to the V-shaped groove (33).

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