Vacuum pressure regulating valve capable of achieving accurate positioning
A technology of vacuum pressure and precise positioning, which is applied to sliding valves, valve details, valve devices, etc., can solve the problems of short service life and low adjustment accuracy, and achieve the effects of long service life, improved control accuracy, and low wear and tear.
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Embodiment 1
[0036] Such as Figure 1-Figure 9 As shown, this embodiment provides a vacuum pressure regulating valve with precise positioning, including a housing 1, a valve port 15 is opened on the housing 1, a rotating motor 2 is installed on the housing 1, and the output shaft 12 of the rotating motor 2 is A swing arm 11 is connected, the end of the swing arm 11 is connected with a connecting shaft 9, an adjusting roller 10 is installed on the connecting shaft 9, the adjusting roller 10 is connected with a connecting plate 8, and an adjusting chute is opened on the connecting plate 8 along its width direction 81, the adjustment roller 10 is located in the adjustment chute 81 and can slide along the adjustment chute 81, the connecting plate 8 is connected with the spool 13, the top surface and the bottom surface of the spool 13 are connected with the valve plate 4, the two sides of the spool 13 Both sides are equipped with a sliding mechanism connected with the housing 1, and the valve c...
Embodiment 2
[0044] Such as Figure 1-Figure 9 As shown, on the basis of Embodiment 1, this embodiment provides the preferred structure of the sliding mechanism as follows: the sliding mechanism includes a guide rail 7 installed in the housing 1, a sliding roller 5 is installed on the side of the valve core 13, and the sliding roller 5 is in contact with the guide rail 7 and can slide along the guide rail 7.
[0045] In this embodiment: when the connecting plate 8 and the valve core 13 move along the length direction of the housing 1 under the push of the swing arm 11, the sliding rollers 5 installed on both sides of the valve core 13 will slide along the guide rail 7, so that The rolling contact between the valve core 13 and the housing 1 produces rolling friction, which can greatly reduce the wear on the valve core 13, thereby helping to improve the service life of the valve. The movement of the sliding roller 5 along the guide rail 7 The long-life rolling displacement effectively guara...
Embodiment 3
[0048] Such as Figure 1-Figure 10 As shown, on the basis of Embodiment 1, this embodiment provides a preferred structure that can further improve the position control accuracy of the valve plate 4 , that is, the output shaft 12 of the rotary motor 2 is also equipped with an angle encoder 14 .
[0049] A bottom plate 16 is also mounted on the housing 1 , an adapter plate 17 is installed on the bottom plate 16 , and the rotating motor 2 is installed on the adapter plate 17 . The bottom plate 16 can be directly welded on the housing 1. Bearings are installed on the bottom plate 16 and the adapter plate 17 to realize the fixed installation and axial positioning of the output shaft 12 and ensure the axial fixation of the output shaft 12. The adapter plate 17 It is used to fix the L-shaped rotating electrical machine 2, and at the same time, a sealing ring is provided on the adapter plate 17, so that the dynamic sealing of the output shaft 12 can be realized during the movement.
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