一种可调节流阀及组合阀

Abstract

本申请涉及一种可调节流阀，包括滑套，所述滑套内设有能够沿滑套内腔轴向移动的活动座，所述滑套上设有调节件，调节件能够沿滑套轴线方向移动，并在移动至滑套上任意位置后与滑套保持相对静止，所述调节件与活动座之间设有弹簧；其中，通过改变调节件在滑套上的相对位置，实现对弹簧压缩量的调节；本实用新型通过在滑套上设置轴向位置可调的调节件，使得在节流阀整体装配完成后，仍可通过改变调节件在滑套上的具体安装位置，灵活调整调节件与活动座之间的弹簧初始压缩量，从而满足节流阀在装配完成后的可调性，有助于实现不同批次产品在节流性能方面的高度一致性，满足系统对流量调控精度的要求。

Claims

1. An adjustable flow valve, characterized in that, Includes a sliding sleeve (1), inside which is provided a movable seat (4) that can move axially within the inner cavity of the sliding sleeve (1), and on the sliding sleeve (1) is provided an adjusting member (2), which can move along the axis of the sliding sleeve (1) and remain relatively stationary with the sliding sleeve (1) after moving to any position on the sliding sleeve (1), and a spring (3) is provided between the adjusting member (2) and the movable seat (4); wherein, by changing the relative position of the adjusting member (2) on the sliding sleeve (1), the compression of the spring (3) can be adjusted; The adjusting member (2) is located near the end of the inner cavity of the sliding sleeve (1), and the adjusting member (2) has a fitting part (202) that contacts and slides with the inner wall of the sliding sleeve (1).

2. An adjustable flow valve according to claim 1, wherein, The adjusting element (2) is threadedly connected to the sliding sleeve (1).

3. An adjustable flow valve according to claim 1, wherein, The adjusting component (2) is a disc-shaped structure or a shell structure, and a first flow channel (201) is provided on it. The first flow channel (201) connects the inner cavity of the sliding sleeve (1) with the outside.

4. An adjustable flow valve according to claim 3, wherein, The first flow channel (201) is a circular hole evenly opened at the end of the adjusting member (2).

5. An adjustable flow valve according to claim 1, characterized in that, The outer wall of the sliding sleeve (1) away from the adjusting member (2) is formed with a tapered part (101), and the sliding sleeve (1) is provided with a limiting structure for axially limiting the movable seat (4).

6. An adjustable flow valve according to claim 5, wherein, The sliding sleeve (1) has a throttling hole (104) formed at one end near the movable seat (4). A valve needle (5) is installed on the movable seat (4). The valve needle (5) can be inserted into the throttling hole (104) and the flow rate can be adjusted when the movable seat (4) moves. The limiting structure is a step (102) formed on the inner wall of the sliding sleeve (1). The end of the movable seat (4) can abut against the end face of the step (102) to achieve axial limiting of the movable seat (4).

7. An adjustable flow valve according to claim 6, wherein, The movable seat (4) is provided with a second flow channel (401), and the end of the sliding sleeve (1) is provided with a blind hole (103).

8. An adjustable flow valve according to claim 5, wherein, A valve needle (5) is fixed at one end of the sliding sleeve (1) near the movable seat (4). A throttling hole (104) is provided on the movable seat (4). The valve needle (5) can be inserted into the throttling hole (104) and the flow rate can be adjusted when the movable seat (4) moves. The limiting structure is a conical inner wall (105) formed on the inner wall of the sliding sleeve (1). The outer diameter end of the movable seat (4) is provided with a conical outer wall (402) with the same taper as the conical inner wall (105). The conical outer wall (402) can abut against the conical inner wall (105) to achieve axial limiting of the movable seat (4).

9. An adjustable flow valve according to claim 8, wherein, The sliding sleeve (1) has a third flow channel (106) at one end near the movable seat (4), which is used to connect the inner cavity of the sliding sleeve (1) with the outside.

10. A combination valve comprising an adjustable flow valve as claimed in any one of claims 1 to 9, characterized in that Also includes: The valve seat (8) has a through cavity inside, and a valve port (801) is provided at one end of the cavity. The valve sleeve (9) is fixedly connected to the valve seat (8) and close to the valve port (801) at one end. Its inner cavity is connected to the inner cavity of the valve seat (8). A liquid passage hole (901) is provided at the circumferential direction of the valve sleeve (9) and close to the valve port (801). The valve sleeve (9) is provided with a limiting structure that contacts the tapered part (101) of the sliding sleeve (1) at the other end away from the valve port (801). The throttle valve is movably installed in the inner cavity of the valve sleeve (9), and one end of the adjusting member (2) of the throttle valve is set in the direction close to the valve port (801). When the throttle valve moves axially and abuts against the valve port (801), the through cavity of the valve seat (8) is isolated from the liquid passage hole (901). When the throttle valve is separated from the valve port (801), the through cavity of the valve seat (8) is connected to the liquid passage hole (901).

11. A combination valve according to claim 10, wherein The valve seat (8) and the valve sleeve (9) are separate components. The valve sleeve (9) is integrally stamped. The limiting structure is a tapered hole structure set at the inner hole position of the end of the valve sleeve (9). The taper of the tapered hole structure matches the taper of the tapered part (101) of the sliding sleeve (1).

12. A combination valve according to claim 10, wherein, It also includes a valve tube (6), the integral structure formed by the valve seat (8) and the valve sleeve (9) is fixed inside the valve tube (6), and a fourth flow passage (10) is formed between the valve tube (6) and the valve sleeve (9).

13. A combination valve according to claim 12, wherein, The valve tube (6) has filter screens (7) installed at both ends inside.

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