供气流量控制阀

Abstract

本实用新型属于阀门技术领域，尤其涉及供气流量控制阀，其包括：手轮、阀杆、阀套、阀芯和阀体；手轮的下部内壁与阀体的上部外壁转动连接，内部与阀杆固定连接，阀杆的下部与阀芯上部螺纹连接；且阀杆的下部和阀芯的上部外侧设有阀套；阀套与阀体固定连接，且阀套的内腔与阀体内部的空腔连通；空腔自上而下包括置物腔和密封腔，密封腔的直径小于置物腔的直径，置物腔与出气口连通，密封腔与进气口连通；阀芯包括自上而下包括内螺纹部、密封部和调节部；内螺纹部与阀杆下部的外螺纹螺纹连接，密封部位于置物腔内，调节部的截面呈上宽下窄的锥形，且其宽端直径与密封腔的直径相等。本实用新型通过控制流通截面的大小进而调节控制阀内的气体流量。

Claims

1. A gas flow control valve characterized by: It includes: A handwheel (1), a valve stem (2), a valve sleeve (3), a valve core (4) and a valve body (5); the lower inner wall of the handwheel (1) is rotationally connected to the upper outer wall of the valve body (5), and the inside is fixedly connected to the valve stem (2), and the lower part of the valve stem (2) is threadedly connected to the upper part of the valve core (4); and a valve sleeve (3) is provided on the lower part of the valve stem (2) and the outer side of the upper part of the valve core (4), the valve stem (2) is rotationally connected to the valve sleeve (3), and the valve core (4) is slidably connected to the valve sleeve (3) up and down; The valve sleeve (3) is fixedly connected to the valve body (5), and the inner cavity (6) of the valve sleeve (3) is communicated with the cavity inside the valve body (5); the cavity includes a storage cavity (7) and a sealing cavity (8) from top to bottom, the diameter of the sealing cavity (8) is smaller than the diameter of the storage cavity (7), the storage cavity (7) is communicated with the air outlet (9), and the sealing cavity (8) is communicated with the air inlet (10); The valve core (4) includes an internal thread part (4-1), a sealing part (4-2) and an adjusting part (4-3) from top to bottom; the internal thread part (4-1) is threadedly connected to the external thread at the lower part of the valve stem (2), the sealing part (4-2) is located in the storage cavity (7), the cross section of the adjusting part (4-3) is a cone with a wider upper part and a narrower lower part, and the diameter of its wide end is equal to the diameter of the sealing cavity (8).

2. The gas supply flow control valve according to claim 1, characterized by: A groove is provided at the lower part of the sealing part (4-2), and a sealing block (4-4) is provided in the groove; the upper part of the adjusting part (4-3) passes through the sealing block (4-4) and is connected to the sealing part (4-2).

3. The gas supply flow control valve of claim 1, wherein: The storage cavity (7) includes a first cavity and a second cavity (7-1) from top to bottom, and the diameter of the first cavity is smaller than the diameter of the second cavity (7-1); The inner wall of the first cavity is fixedly connected to the lower outer part of the valve sleeve (3), the second cavity (7-1) internally has the sealing part (4-2), and the lower diameter of the sealing part (4-2) is larger than the diameter of the inner cavity (6) of the valve sleeve (3).

4. The gas supply flow control valve according to claim 1, characterized in that: A clamping groove (4-5) is provided on the side wall of the internal thread part (4-1), the clamping groove (4-5) contacts the inner cavity (6) of the valve sleeve (3), and a sealing ring (11) is provided on the clamping groove (4-5).

5. The gas supply flow control valve of claim 1, wherein: A fixing plate (1-1) is provided in the middle of the handwheel (1), and the lower part of the fixing plate (1-1) is fixedly connected to the valve stem (2).

6. The gas supply flow control valve of claim 5, wherein: A positioning sleeve (12) is provided at the lower part of the fixing rod, a positioning clip (13) is provided at the lower part of the positioning sleeve (12), and the lower part of the positioning clip (13) contacts the upper part of the valve sleeve (3).

7. The gas supply flow control valve of claim 1, wherein: A wall plate (14) is sleeved on the upper outer part of the valve body (5), the cross section of the wall plate (14) is two symmetric "冂" shapes, and a rubber pad (15) is provided inside it; A limiting plate (16) is sleeved on the middle outer part of the valve body (5), and an upward positioning bolt (17) is provided inside the limiting plate (16); The wall plate (14) and the limiting plate (16) are used to fix the valve body (5) on the workbench (18).

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