一种生物制药用高精度微流量调节阀

Abstract

本实用新型公开了一种生物制药用高精度微流量调节阀，包括阀体、与阀体连接的气缸体、与气缸体连接的气缸盖，气缸体上连接有气源接头，气缸盖、气缸体以及阀体中穿设有阀杆，阀杆上位于气缸盖中设置有活塞，还包括设于气缸盖上方的比例定位器，比例定位器内设置有位移传感器和电磁阀，比例定位器内设置有与阀杆连接的连接杆，比例定位器上设置有气道，气道和气源接头之间通过气管连接，阀杆位于阀体内的底部位于固定连接有波纹管密封调节锥。本实用新型结构设计合理，通过设置比例定位器以及在阀杆的底部设置波纹管密封调节锥，可实现对介质流量进行准确调节，实现高精度微流量的调节目的，满足生物制药中的精准度要求。

Claims

1. A high-precision micro-flow regulating valve for biopharmaceutical applications, comprising a valve body (1), a cylinder body (2) connected to the valve body (1), and a cylinder head (3) connected to the cylinder body (2), wherein a gas source connector (4) is connected to the cylinder body (2), a valve stem (5) is disposed in the cylinder head (3), the cylinder body (2), and the valve body (1), and a piston (6) is disposed on the valve stem (5) within the cylinder head (3), characterized in that, It also includes a proportional positioner (7) located above the cylinder head (3). The proportional positioner (7) is equipped with a displacement sensor (71) and a solenoid valve (72). The proportional positioner (7) is equipped with a connecting rod (73) connected to the valve stem (5). The proportional positioner (7) is equipped with an air passage (74). The air passage (74) and the air source connector (4) are connected by an air pipe (75). The bottom of the valve stem (5) is located inside the valve body (1) and is fixedly connected to a bellows sealing adjustment cone (8). The bellows sealing adjustment cone (8) includes a fixed or integrally formed cone part (81) and a bellows part (82). The upper end of the bellows part (82) is located on the inner wall of the valve body (1). A sealing gasket (83) is provided between the bellows sealing adjustment cone (8) and the valve stem (5).

2. The high-precision micro flow regulating valve for biopharmaceuticals according to claim 1, characterized in that, The lower end of the valve stem (5) is formed with a groove (51), the sealing gasket (83) is sleeved on the valve stem (5) and snapped into the groove (51), and a receiving groove (84) is provided in the center of the cone part (81), and the sealing gasket (83) is tightly fitted in the receiving groove (84).

3. A high-precision micro-flow regulating valve for biopharmaceutical applications according to claim 1 or 2, characterized in that, The upper end of the bellows section (82) is fixed or integrally provided with a mounting pad (85), and a stepped surface (11) is provided on the inner wall of the valve body (1), and the mounting pad (85) is abutted and installed on the stepped surface (11).

4. The high-precision micro flow regulating valve for biopharmaceuticals according to claim 3, characterized in that, The cylinder body (2) is inserted into the valve body (1) and there is a gap (9) between them. The bottom outer side of the cylinder body (2) is fixed or integrally provided with an annular stop (91). The annular stop is installed on the mounting pad (85). The cylinder body (2) is fitted with a union nut (92). The union nut (92) has an insertion part (93) that is inserted into the gap (9). The outer periphery of the insertion part (93) is threadedly connected to the inner wall of the valve body (1).

5. The high-precision micro flow regulating valve for biopharmaceuticals according to claim 4, characterized in that, An annular groove (21) is provided on the inner wall of the lower end of the cylinder body (2). An annular retaining ring (22) is provided in the annular groove (21). The valve stem (5) is located in the cylinder body (2) and is provided with a retaining ring washer (23) abutting against the annular retaining ring (22), a V-shaped lower washer (24) abutting against the retaining ring washer (23), a V-shaped middle washer (25) abutting against the V-shaped lower washer (24), a V-shaped upper washer (26) abutting against the V-shaped middle washer (25), and a spring washer (27) abutting against the V-shaped upper washer (26). A spring (28) is connected between the spring washer (27) and the upper end of the cylinder body (2). The V-shaped lower washer (24) and the V-shaped lower washer (24) are oriented in opposite directions.

6. The high-precision micro flow regulating valve for biopharmaceuticals according to claim 5, characterized in that The upper and lower sides of the V-shaped gasket (25) are provided with V-shaped openings (251), and the V-shaped openings (251) on the upper and lower sides are opposite. The V-shaped gasket (25) is provided with annular grooves (252) on the inner side of the valve stem (5) and the outer side of the cylinder body (2). O-rings (253) are provided in both annular grooves (252).

Images