Microminiature one-way throttle valve

Abstract

The utility model relates to a microminiature one-way throttle valve, which comprises a valve body, a central channel is arranged in the middle of the valve body, a valve seat I and a valve seat II are arranged in the central channel, a valve core is arranged between the valve seat I and the valve seat II and comprises a frustum section and a cylindrical section, an annular conical surface is arranged in the valve seat II, and the valve seat I and the valve seat II are arranged on the frustum section. The valve body is provided with an annular conical surface, the annular conical surface is matched with the frustum section of the valve element, the bottom face of the cylindrical section is matched with the valve seat I, dovetail grooves are formed in the frustum section and the joint of the frustum section and the cylindrical section, a hydraulic oil channel A is formed in the portion, at the front end of the valve seat I, of the valve body, and a hydraulic oil channel B is formed in the portion, at the rear end of the valve seat II, of the valve body. The utility model has the advantages of simplicity, practicability, low processing cost and wide application range.

Description

Technical Field

[0001] This utility model relates to a valve, specifically a one-way throttle valve. Background Technology

[0002] In piston pump systems, relief valves (sometimes called safety valves) play an important role, mainly involving pressure control and system protection. The working principle of relief valves is as follows: the relief valve is set at a specific pressure value. Once the system pressure reaches or exceeds this preset value, the relief valve will open, allowing excess hydraulic oil to flow back to the oil tank or other low-pressure areas, thereby preventing the system pressure from rising further.

[0003] Existing miniature one-way throttle valves do not have a dovetail groove throttling function. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to overcome the shortcomings of the prior art and provide a simple, practical, low-cost, and widely applicable micro-sized one-way throttle valve.

[0005] Technical Solution: To solve the above-mentioned technical problems, the present invention provides a miniature one-way throttle valve, which includes a valve body with a central channel in the middle. A valve seat I and a valve seat II are located within the central channel. A valve core is located between the valve seat I and the valve seat II. The valve core includes a frustum section and a cylindrical section. An annular conical surface is provided within the valve seat II, which matches the frustum section of the valve core. The bottom surface of the cylindrical section matches the valve seat I. A dovetail groove is provided at the frustum section and at the connection between the frustum section and the cylindrical section. A hydraulic oil channel A is provided on the valve body at the front end of the valve seat I, and a hydraulic oil channel B is provided on the valve body at the rear end of the valve seat II.

[0006] Furthermore, the central channel is an internally threaded channel.

[0007] Furthermore, a plug is provided at one end of the central channel.

[0008] Furthermore, the valve core moves between valve seat I and valve seat II.

[0009] Furthermore, when the pressure in hydraulic oil passage A is greater than the pressure in hydraulic oil passage B, hydraulic oil enters from hydraulic oil passage A, pushing the valve core to fit against valve seat II. The frustum section of the valve core and the annular conical surface of valve seat II form a seal, and the hydraulic oil flows out from the dovetail groove, ensuring that the pressure in hydraulic oil passage B is stable.

[0010] Furthermore, when the pressure in hydraulic oil passage B is greater than the pressure in hydraulic oil passage A, the valve core retracts, and the bottom surface of the cylindrical section of the valve core fits against the valve seat I to prevent backflow.

[0011] Beneficial effects: Compared with the prior art, the significant advantages of this utility model are:

[0012] This product features a valve core, valve seat I, and valve seat II. The valve core's conical surface has a dovetail groove, employing an annular conical seal. The dovetail groove throttles the flow. When hydraulic oil enters through port A, it pushes the valve core, causing the conical surface of the valve core to fit against valve seat II, allowing the hydraulic oil to flow out through the dovetail groove, ensuring stable hydraulic oil pressure at port B. When the hydraulic oil pressure at port B exceeds that at port A, the valve core retracts, and its bottom surface fits against valve seat I, preventing backflow and stabilizing the pressure. This product uses a threaded installation design, making it simple, practical, low-cost, and widely applicable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1 As shown, the miniature one-way throttle valve of this utility model includes a valve body 1, a central channel 2 in the middle of the valve body 1, the central channel 2 being an internally threaded channel, a valve seat I 3 and a valve seat II 4 spirally arranged in the central channel 2, a valve core between the valve seat I 3 and the valve seat II 4, the valve core including a frustum section 5 and a cylindrical section 6, an annular conical surface in the valve seat II 4 matching the frustum section 5 of the valve core, the bottom surface of the cylindrical section 6 matching the valve seat I 3, a dovetail groove 7 at the connection between the frustum section 5 and the cylindrical section 6, a hydraulic oil channel A8 on the valve body 1 at the front end of the valve seat I 3, a hydraulic oil channel B9 on the valve body 1 at the rear end of the valve seat II 4, and a plug 10 at one end of the central channel 2.

[0016] The valve core moves between valve seat I3 and valve seat II4. When the pressure in hydraulic oil passage A8 is greater than the pressure in hydraulic oil passage B9, hydraulic oil enters from hydraulic oil passage A8, pushing the valve core to fit against valve seat II4. The frustum section 5 of the valve core and the annular conical surface of valve seat II4 form a seal, and the hydraulic oil flows out from the dovetail groove 7, ensuring that the pressure in hydraulic oil passage B9 is stable. When the pressure in hydraulic oil passage B9 is greater than the pressure in hydraulic oil passage A8, the valve core retracts, and the bottom surface of the cylindrical section 6 of the valve core fits against valve seat I3 to prevent backflow.

[0017] This product features a valve core, valve seat I, and valve seat II. The valve core's conical surface has a dovetail groove, employing an annular conical seal. The dovetail groove throttles the flow. When hydraulic oil enters through port A, it pushes the valve core, causing the conical surface of the valve core to fit against valve seat II, allowing the hydraulic oil to flow out through the dovetail groove, ensuring stable hydraulic oil pressure at port B. When the hydraulic oil pressure at port B exceeds that at port A, the valve core retracts, and its bottom surface fits against valve seat I, preventing backflow and stabilizing the pressure. This product uses a threaded installation design, making it simple, practical, low-cost, and widely applicable.

[0018] This utility model provides a concept and method. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model. These improvements and modifications should also be considered as the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A miniature one-way throttle valve, characterized in that: It includes a valve body (1), a central channel (2) in the middle of the valve body (1), a valve seat I (3) and a valve seat II (4) in the central channel (2), a valve core between the valve seat I (3) and the valve seat II (4), the valve core including a frustum section (5) and a cylindrical section (6), an annular conical surface in the valve seat II (4), the annular conical surface matching the frustum section (5) of the valve core, the bottom surface of the cylindrical section (6) matching the valve seat I (3), a dovetail groove (7) at the connection between the frustum section (5) and the cylindrical section (6), a hydraulic oil channel A (8) on the valve body (1) at the front end of the valve seat I (3), and a hydraulic oil channel B (9) on the valve body (1) at the rear end of the valve seat II (4).

2. The miniature one-way throttle valve according to claim 1, characterized in that: The central channel (2) is an internal thread channel.

3. The miniature one-way throttle valve according to claim 1, characterized in that: A plug (10) is provided at one end of the central channel (2).

4. The miniature one-way throttle valve according to claim 1, characterized in that: The valve core moves between valve seat I (3) and valve seat II (4).

5. The miniature one-way throttle valve according to claim 1, characterized in that: When the pressure in hydraulic oil channel A (8) is greater than the pressure in hydraulic oil channel B (9), hydraulic oil enters from hydraulic oil channel A (8), pushing the valve core to fit against valve seat II (4). The cone section (5) of the valve core and the annular cone surface of valve seat II (4) form a seal, and the hydraulic oil flows out from the dovetail groove (7), ensuring that the pressure in hydraulic oil channel B (9) is stable.

6. The miniature one-way throttle valve according to claim 1, characterized in that: When the pressure in hydraulic oil passage B (9) is greater than the pressure in hydraulic oil passage A (8), the valve core retracts, and the bottom surface of the cylindrical section (6) of the valve core fits against the valve seat I (3) to prevent backflow.

Images