A bag type one-way throttle valve

Abstract

This utility model discloses a capsule-type one-way throttle valve, comprising a valve body, a bracket, a lock nut, and a damping body. The valve body has a cylindrical structure with internal threads at both ends of its inner wall, and a valve hole formed by a narrowing diameter in the middle. A conical surface is provided on one side of the valve hole. The bracket includes a disc and a sleeve coaxial with the valve body. One end of the sleeve rests on the conical surface inside the valve body, and the other end is fixedly connected to the disc. The lock nut is located on the side of the disc opposite to the sleeve, pressing the disc and engaging with the valve body through threads. Flow holes are distributed on both the disc surface and the side wall of the sleeve. The damping body is an annular shape coaxial with the valve body and slidably installed inside the sleeve. The diameter of the central hole of the damping body is smaller than the diameter of the valve hole. This utility model integrates the functions of a one-way valve and a bypass throttle valve through an annular damping body, greatly reducing the complexity of the one-way throttle valve structure, reducing both the size and manufacturing cost of the one-way throttle valve.

Description

Technical Field

[0001] This utility model relates to a bladder-type one-way throttle valve with simple structure, small size and low cost, belonging to the field of valve technology. Background Technology

[0002] In hydraulic technology, one-way throttle valves are mainly used to adjust the movement speed of actuators in hydraulic systems. Generally, a combination of one-way valve and bypass throttle valve is used to achieve the purpose of one-way throttling. Since the existing one-way throttle valve is a combination of two components, it increases the complexity of the structure, as well as the size and manufacturing cost of the components. Therefore, it is necessary to improve it. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a swivel-type one-way throttle valve, thereby reducing the size and manufacturing cost of the one-way throttle valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A swivel-type one-way throttle valve includes a valve body, a bracket, a lock nut, and a damping body. The valve body has a cylindrical structure with internal threads at both ends of its inner wall, and a valve hole formed by a narrowing diameter in the middle. A conical surface is provided on one side of the valve hole. The bracket includes a disc and a sleeve coaxial with the valve body. The outer diameter of the sleeve is smaller than the inner diameter of the valve body, and the inner diameter of the sleeve is larger than the diameter of the valve hole. One end of the sleeve rests on the conical surface inside the valve body, and the other end is fixedly connected to the disc. The lock nut is located on the side of the disc opposite to the sleeve. The lock nut presses against the disc and engages with the valve body through threads. Flow holes are distributed on both the disc surface and the side wall of the sleeve. The damping body is an annular structure coaxial with the valve body and slidably installed inside the sleeve. The diameter of the central hole of the damping body is smaller than the diameter of the valve hole.

[0005] In the above-mentioned sluice-type one-way throttle valve, the damping body is an annular air bladder, and an air nozzle is provided on the side wall of the valve body. The air nozzle is connected to the inner cavity of the damping body through an air pipe, and an axial sliding groove corresponding to the air pipe is provided on the side wall of the sleeve.

[0006] The aforementioned swivel-type one-way throttle valve has a through threaded hole on the side wall of the valve body that matches the air nozzle, and the air nozzle is fixedly connected to the side wall of the valve body through the threaded hole.

[0007] In the aforementioned swivel-type one-way throttle valve, the damping body is made of elastic rubber.

[0008] In the aforementioned swivel-type one-way throttle valve, the cross-section of the damping body is elliptical.

[0009] This invention integrates the functions of a one-way valve and a bypass throttle valve through a ring-shaped damping body, which greatly reduces the complexity of the one-way throttle valve structure, thereby reducing not only the size of the one-way throttle valve but also its manufacturing cost. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the support structure of this utility model, wherein... Figure 2 (a) is the front view. Figure 2 (b) is the right view; Figure 3 This is a schematic diagram of the damping body structure of this utility model, wherein... Figure 3 (a) is the front view. Figure 3 (b) is the left view; Figure 4 This is a schematic diagram of the valve body structure of this utility model; The following are the labels in the diagram: 1. Lock nut, 2. Bracket, 3. Air nozzle, 4. Damping body, 5. Valve body; 2-1, disc; 2-2, sleeve; 2-3, flow hole; 2-4, groove; 4-1. Throttling orifice; 5-1, Valve hole; 5-2, Conical surface; 5-3, Internal thread; 5-4, Threaded hole. Detailed Implementation

[0012] This utility model addresses the shortcomings of existing technologies by providing a bladder-type one-way throttle valve. By designing a bladder-type damping body, the throttle orifice can be adjusted. Furthermore, it integrates the functions of a one-way valve and a bypass throttle valve, achieving structural simplification and solving the problems existing in the background technology.

[0013] See Figures 1-4 This utility model mainly includes a lock nut 1, a bracket 2, an air nozzle 3, a damping body 4, and a valve body 5.

[0014] The valve body 5 is a cylindrical structure and serves as the main supporting component. The exterior of the valve body 5 is cylindrical, and the inner walls at both ends are provided with internal threads 5-3. The diameter of the middle part of the inner wall of the valve body 5 decreases to form a valve hole 5-1. A conical surface 5-2 is provided on one side of the valve hole 5-1. A through threaded hole 5-4 for installing the air nozzle 3 is provided on the side wall of the valve body 5. The threaded hole 5-4 is located at the root of the conical surface 5-2.

[0015] The bracket 2 is installed inside the valve body 5 and consists of two parts: a disc 2-1 and a sleeve 2-2, which are coaxial with the valve body 5. The disc 2-1 is slidably installed inside the valve body 5. The outer diameter of the sleeve 2-2 is smaller than the inner diameter of the valve body 5, and the inner diameter of the sleeve 2-2 is larger than the diameter of the valve hole 5-1. One end of the sleeve 2-2 rests on the conical surface 5-2 inside the valve body 5, and the other end is fixedly connected to the disc 2-1. The lock nut 1 is annular, and its outer edge is provided with an external thread that matches the internal thread 5-3 of the valve body 5. The lock nut 1 is located on the side of the disc 2-1 away from the sleeve 2-2. The lock nut 1 abuts against the disc 2-1, and its external thread mates with the internal thread 5-3 of the valve body 5, pressing the disc 2-1 and fixing the bracket 2 inside the valve body 5. Flow holes 2-3 are distributed on the disc surface of the disc 2-1 and the side wall of the sleeve 2-2 for the flow of fluid media.

[0016] The damping body 4 is an annular airbag made of elastic rubber, with its central hole forming a throttling orifice 4-1. The diameter of the throttling orifice 4-1 is smaller than the diameter of the valve orifice 5-1. By controlling the internal air pressure, the damping body expands or contracts, thereby adjusting the diameter of the throttling orifice 4-1. The damping body 4 is coaxially and slidably installed inside the sleeve 2-2 with the valve body 5. It can slide axially along the inner wall of the sleeve 2-2 under external force and can cooperate with the conical surface 5-2 to form a local sealing structure. The cross-section of the damping body 4 is elliptical, which ensures that the damping body 4 remains coaxial with the valve body 5 when sliding axially along the inner wall of the sleeve 2-2.

[0017] The air nozzle 3 is threaded onto the side of the valve body 5 and connected to the inner cavity of the damping body 4 via an air pipe, used to adjust the pressure within the damping body 4. Figure 2 (b) It can be seen that an axial groove 2-4 is provided on the side wall of the sleeve 2-2. The air pipe connecting the air nozzle 3 and the damping body 4 passes through the groove 2-4 and can slide through the groove 2-4, so that the air pipe does not affect the damping body 4 from sliding axially along the inner wall of the sleeve 2-2.

[0018] In use, the damper 4 is inflated or deflated via the air nozzle 3 to adjust the internal pressure of the damper 4, thereby adjusting the diameter of the throttling orifice 4-1 to meet the usage requirements. Figure 1 In the process, when the fluid flows from left to right, the damper 4 moves to the right under the force of the fluid and adheres to the conical surface 5-2, forming a local sealing structure. The fluid can only flow through the throttling hole 4-1 in the middle of the damper 4, thus achieving the effect of throttling. When the fluid flows from right to left, the damper 4 moves to the left under the force of the fluid and leaves the conical surface 5-2, releasing the local seal. After the fluid passes through the valve hole 5-1 of the valve body 5, it flows to the left through the throttling hole 4-1 and the flow passage hole 2-3 on the support 2. The fluid resistance is reduced, the throttling effect is released, and thus unidirectional throttling is achieved.

[0019] An embodiment of this utility model is as follows: Locknut 1: M27; Bracket 2: Maximum diameter 24mm, length 13mm; Air nozzle 3: Pointed inflation head, M3 thread; Damping element 4: outer diameter 16mm, inner diameter 5mm, height 4mm; Valve body 5: outer diameter 30mm, length 35mm; Internal thread 5-3: M27 thread.

[0020] The beneficial effects of this utility model are that it achieves the integration of throttling branch and unidirectional branch through hollow capsule damping body, reducing the complexity of unidirectional throttling valve structure, and the size of throttling orifice can be effectively adjusted by controlling the air pressure inside the damping body. Therefore, this utility model is not only simple in structure and low in cost, but also convenient to adjust and has strong applicability.

Claims

1. A bag type one-way choke valve, characterized by, The system includes a valve body (5), a bracket (2), a lock nut (1), and a damping body (4). The valve body (5) is a cylindrical structure with internal threads (5-3) at both ends of its inner wall. The diameter of the middle part decreases to form a valve hole (5-1). A conical surface (5-2) is provided on one side of the valve hole (5-1). The bracket (2) includes a disc (2-1) and a sleeve (2-2) coaxial with the valve body (5). The outer diameter of the sleeve (2-2) is smaller than the inner diameter of the valve body (5), and the inner diameter of the sleeve (2-2) is larger than the diameter of the valve hole (5-1). One end of the sleeve (2-2) rests against the valve body (5). On the conical surface (5-2) inside the valve body (5), the other end is fixedly connected to the disc (2-1). The lock nut (1) is located on the side of the disc (2-1) away from the sleeve (2-2). The lock nut (1) presses the disc (2-1) and is engaged with the valve body (5) by threads. There are flow holes (2-3) distributed on the disc surface of the disc (2-1) and the side wall of the sleeve (2-2). The damping body (4) is an annular shape coaxial with the valve body (5) and is slidably installed inside the sleeve (2-2). The diameter of the central hole of the damping body (4) is smaller than the diameter of the valve hole (5-1).

2. A bag-type one-way choke valve according to claim 1, wherein The damping body (4) is an annular air bladder. An air nozzle (3) is provided on the side wall of the valve body (5). The air nozzle (3) is connected to the inner cavity of the damping body (4) through an air pipe. An axial sliding groove (2-4) corresponding to the air pipe is provided on the side wall of the sleeve (2-2).

3. A swivel-type one-way throttle valve according to claim 2, characterized in that, in The valve body (5) has a through threaded hole (5-4) on its side wall that matches the air nozzle (3). The air nozzle (3) is fixedly connected to the side wall of the valve body (5) through the threaded hole (5-4).

4. A sluice-type one-way throttle valve according to any one of claims 1-3, characterized in that, The cross-section of the damping body (4) is elliptical.

5. A swivel-type one-way throttle valve according to claim 4, characterized in that, The damping body (4) is made of elastic rubber.

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