A valve structure based on a Tesla valve

Abstract

The utility model discloses a valve structure based on Tesla valve belongs to valve technical field. The structure includes Tesla valve, filter component A and filter assembly B, filter component A is located in the positive output end of Tesla valve, filter assembly B is located in the positive input end of Tesla valve. When the hydraulic oil is in Tesla valve and flows positively, intercepts the metal chippings and other impurities in the hydraulic oil through filter assembly B, avoids the big granule impurities to enter the inside flow channel of Tesla valve, when the hydraulic oil is in Tesla valve and flows reversely under the low pressure state, intercepts the metal chippings and other impurities in the hydraulic oil through filter component A, avoids the big granule impurities to enter the inside flow channel of Tesla valve, thereby avoids the inside flow channel of Tesla valve to be caused flow channel blockage by a large number of impurities to enter the inside flow channel of Tesla valve, ensures that the jar can long -term normal operation.

Description

Technical Field

[0001] This utility model relates to a valve structure based on a Tesla valve, belonging to the field of valve technology. Background Technology

[0002] The Tesla valve is a cleverly designed passive check valve. It has no moving parts and relies entirely on fluid dynamics principles to achieve unidirectional fluid flow. When fluid flows in the designed direction (low-resistance direction), it tends to choose the path of least resistance. In this direction, the bifurcation point guides the main flow directly along a relatively straight path with minimal curvature. The fluid does not generate strong collisions or large-scale eddies at the bifurcation point, resulting in relatively small energy loss and a smooth, direct overall flow path. However, when the fluid attempts to flow in the opposite direction, the asymmetry of the channel begins to act as a barrier. At the bifurcation point, the fluid is guided towards the sidewalls or directly impacts the protrusions in the channel. This impact leads to strong turbulence and eddies, a significantly longer flow path, and momentum loss. These effects combined generate flow resistance much higher than in the downstream direction.

[0003] However, the reverse flow characteristics of a Tesla valve under low pressure differ significantly from those under high pressure or high-speed flow, primarily manifested as decreased resistance, increased leakage, and reduced energy dissipation efficiency. Equipment such as shock absorbers requires switching between high and low pressure during operation. Therefore, if a Tesla valve is applied to the hydraulic circuit of such equipment, the forward or reverse flow of hydraulic oil within the Tesla valve will inevitably carry metal debris and other impurities generated by the friction and wear of internal shock absorber components into the valve's flow channel. Over time, this can easily cause blockage of the Tesla valve's internal flow channel, thus affecting the normal operation of the shock absorber. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a valve structure based on a Tesla valve.

[0005] This utility model is achieved through the following technical solution:

[0006] A valve structure based on a Tesla valve includes a Tesla valve, a filter element A, and a filter assembly B. The filter element A is disposed at the positive output end of the Tesla valve, and the filter assembly B is disposed within the positive input end of the Tesla valve.

[0007] The filter component A includes a filter assembly A and a limiting sleeve. The filter assembly A is located inside the Tesla valve, and the limiting sleeve is connected to the Tesla valve and limits the movement of the filter assembly A.

[0008] The outer diameter of the limiting sleeve is the same as the outer diameter of the Tesla valve, and the limiting sleeve extends into the housing of the Tesla valve and is clearance-fitted with the housing of the Tesla valve.

[0009] One end of the limiting sleeve that extends into the Tesla valve housing cooperates with the step inside the Tesla valve housing to axially limit the filter assembly A.

[0010] The filter assembly A extends into the limiting sleeve and is fitted with the limiting sleeve with a clearance, so that the filter assembly A is radially limited by the inner circular surface of the limiting sleeve and the inner circular surface of the Tesla valve housing.

[0011] The filter component A is a sintered filter element, and the sintered filter element covers the positive outlet of all flow channels inside the Tesla valve.

[0012] The filter component B is a filter screen, and the filter screen covers the forward inlet of all flow channels inside the Tesla valve.

[0013] The filter screen includes a disc and multiple filter holes formed on the disc.

[0014] The Tesla valve has a sealing sleeve at its positive input end. The outer diameter of the sealing sleeve is the same as that of the Tesla valve, and several grooves are formed on the outer circumferential surface of the sealing sleeve.

[0015] The sealing sleeve has a threaded sleeve at the end away from the Tesla valve.

[0016] The beneficial effects of this invention are as follows: when the hydraulic oil flows forward in the Tesla valve, the filter component B intercepts metal debris and other impurities in the hydraulic oil, preventing large particles of impurities from entering the internal flow channel of the Tesla valve; under low pressure, when the hydraulic oil flows backward in the Tesla valve, the filter component A intercepts metal debris and other impurities in the hydraulic oil, preventing large particles of impurities from entering the internal flow channel of the Tesla valve; thus, a large number of impurities are prevented from entering the internal flow channel of the Tesla valve and causing blockage, ensuring that the shock absorber can operate normally for a long time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a front view of the filter component B of this utility model.

[0019] In the diagram: 1-Filter component A, 10-Limit sleeve, 11-Filter assembly A, 2-Tesla valve, 3-Filter assembly B, 31-Disc, 32-Filter hole, 4-Sealing sleeve, 40-Groove, 5-Threaded sleeve. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figure 1 and Figure 2 As shown, the valve structure based on a Tesla valve according to this utility model includes a Tesla valve 2, a filter component A1, and a filter assembly B3. The filter component A1 is located at the forward output end of the Tesla valve 2, and the filter assembly B3 is located at the forward input end of the Tesla valve 2. When hydraulic oil flows forward within the Tesla valve 2, the filter assembly B3 intercepts metal debris and other impurities in the hydraulic oil, preventing large particles from entering the internal flow channel of the Tesla valve 2. Under low pressure, when the hydraulic oil flows backward within the Tesla valve 2, the filter component A1 intercepts metal debris and other impurities in the hydraulic oil, preventing large particles from entering the internal flow channel of the Tesla valve 2. This prevents a large amount of impurities from entering the internal flow channel of the Tesla valve 2 and causing blockage, ensuring the shock absorber can operate normally for a long time.

[0022] The filter component A1 includes a filter assembly A11 and a limiting sleeve 10. The filter assembly A11 is located inside the Tesla valve 2, and the limiting sleeve 10 is connected to the Tesla valve 2 and limits the filter assembly A11.

[0023] The outer diameter of the limiting sleeve 10 is the same as the outer diameter of the Tesla valve 2, and the limiting sleeve 10 extends into the housing of the Tesla valve 2 and is clearance-fitted with the housing of the Tesla valve 2. In use, the limiting sleeve 10 is welded to the housing of the Tesla valve 2; the clearance fit between the limiting sleeve 10 and the housing of the Tesla valve 2 ensures that the two are arranged coaxially.

[0024] One end of the limiting sleeve 10 that extends into the housing of the Tesla valve 2 cooperates with the step inside the housing of the Tesla valve 2 to axially limit the filter assembly A11.

[0025] The filter assembly A11 extends into the limiting sleeve 10 and is clearance-fitted with the limiting sleeve 10, so that the inner circular surface of the limiting sleeve 10 and the inner circular surface of the Tesla valve 2 housing together radially limit the filter assembly A11. In use, the end of the limiting sleeve 10 that extends into the Tesla valve 2 housing engages with the step inside the Tesla valve 2 housing to axially limit the flange of the sintered filter element. After the limiting sleeve 10 is welded to the Tesla valve 2 housing, the limiting sleeve 10 presses the flange of the sintered filter element firmly.

[0026] The filter assembly A11 is a sintered filter element, and the sintered filter element covers the positive outlet of all flow channels inside the Tesla valve 2. In use, the sintered filter element is arranged close to the positive outlet of the internal flow channels of the Tesla valve 2.

[0027] The filter assembly B3 is a filter screen, and the filter screen covers the forward inlet of all flow channels inside the Tesla valve 2. In use, the filter screen is welded and fixed inside the Tesla valve 2, and the filter screen is arranged close to the forward inlet of the internal flow channels of the Tesla valve 2.

[0028] The filter screen includes a disc 31 and a plurality of filter holes 32 formed on the disc 31.

[0029] The Tesla valve 2 has a sealing sleeve 4 at its positive input end. The outer diameter of the sealing sleeve 4 is the same as that of the Tesla valve 2, and multiple grooves 40 are formed circumferentially on the outer surface of the sealing sleeve 4. In use, the sealing sleeve 4 is welded to the housing of the Tesla valve 2; a portion of the sealing sleeve 4 extends into the housing of the Tesla valve 2 and is clearance-fitted with the housing to ensure that the sealing sleeve 4 and the Tesla valve 2 are coaxially arranged. The grooves 40 are used to install sealing rings.

[0030] A threaded sleeve 5 is provided at the end of the sealing sleeve 4 away from the Tesla valve 2. In use, the threaded sleeve 5 is threadedly connected to the sealing sleeve 4 via a pipe thread. The threaded sleeve 5 also has an internal thread, which facilitates the connection of the valve to other hydraulic components.

Claims

1. A valve structure based on a Tesla valve, characterized in that: It includes a Tesla valve (2), a filter component A (1) and a filter assembly B (3), wherein the filter component A (1) is located at the positive output end of the Tesla valve (2) and the filter assembly B (3) is located inside the positive input end of the Tesla valve (2).

2. The valve structure based on a Tesla valve as described in claim 1, characterized in that: The filter component A (1) includes a filter assembly A (11) and a limiting sleeve (10). The filter assembly A (11) is located inside the Tesla valve (2), and the limiting sleeve (10) is connected to the Tesla valve (2) and limits the filter assembly A (11).

3. The valve structure based on the Tesla valve as described in claim 2, characterized in that: The outer diameter of the limiting sleeve (10) is the same as the outer diameter of the Tesla valve (2), and the limiting sleeve (10) extends into the housing of the Tesla valve (2) and is clearance-fitted with the housing of the Tesla valve (2).

4. The valve structure based on a Tesla valve as described in claim 3, characterized in that: One end of the limiting sleeve (10) that extends into the housing of the Tesla valve (2) cooperates with the step inside the housing of the Tesla valve (2) to axially limit the filter assembly A (11); The filter assembly A (11) extends into the limiting sleeve (10) and is clearance-fitted with the limiting sleeve (10) so that the filter assembly A (11) is radially limited by the inner circular surface of the limiting sleeve (10) and the inner circular surface of the Tesla valve (2) housing.

5. The valve structure based on a Tesla valve as described in claim 2, 3, or 4, characterized in that: The filter assembly A (11) is a sintered filter element, and the sintered filter element covers the positive outlet of all flow channels inside the Tesla valve (2).

6. The valve structure based on a Tesla valve as described in claim 1, characterized in that: The filter component B (3) is a filter screen, and the filter screen covers the positive inlet of all flow channels inside the Tesla valve (2).

7. The valve structure based on a Tesla valve as described in claim 6, characterized in that: The filter screen includes a disc (31) and a plurality of filter holes (32) formed on the disc (31).

8. The valve structure based on a Tesla valve as described in claim 1, characterized in that: The positive input end of the Tesla valve (2) is provided with a sealing sleeve (4), the outer diameter of the sealing sleeve (4) is consistent with the outer diameter of the Tesla valve (2), and a number of grooves (40) are provided on the outer circular surface of the sealing sleeve (4) along the circumferential direction.

9. The valve structure based on a Tesla valve as described in claim 8, characterized in that: A threaded sleeve (5) is provided at the end of the sealing sleeve (4) away from the Tesla valve (2).

Images