A discharge butterfly valve
A butterfly valve and valve seat technology, applied in the field of powder medicine discharge valve, can solve the problems of easy opening, complex structure, unfavorable cleaning, etc., and achieve the effect of small braking resistance, meeting cleaning requirements, and simple structure
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Embodiment 1
[0019] Such as figure 1 , The present invention provides a discharge butterfly valve, comprising a valve seat 8, a valve core 9 located in the inner cavity of the valve seat 8, and a valve stem 5 fixedly connected to the valve core 9 at one end, and the free end of the valve stem 5 is located in the valve The outside of the seat 8 also includes a rod-shaped handle 1, a spring 3 and a slot seat 7. The free end of the valve stem 5 is provided with a strip groove, and the handle 1 is partially located in the strip groove, and the handle 1 and the valve stem 5 Through the hinged connection of the hinge nail 4 crossing the strip groove, the slot seat 7 is fixedly connected to the valve seat 8. The slot seat 7 is provided with a plurality of slot slots 6, and the handle 1 is partly located in any slot 6, so One end of the spring 3 is in contact with the handle 1 and is compressed between the valve seat 8 and the handle 1, and the hinge nail 4 is located between the spring 3 and the s...
Embodiment 2
[0022] This embodiment is further limited on the basis of embodiment 1: figure 1 , It also includes a follower block 2 fixed on the valve stem 5. The side surface of the free end of the slot seat 7 is also provided with an arc whose length is within one-third to one-half of the circumference of the slot seat 7 Notch, the card slots 6 are evenly distributed in the area outside the arc-shaped notch on the free end, and the follower block 2 is located in the arc-shaped notch. The above arrangement is convenient for arranging the card slot 6 at the end of the card slot seat 7 along the circumferential direction of the card slot seat 7. When the number of the provided card slots 6 is equal, the card slot seat 7 of the above structure form is compared with other structure forms. It has the characteristics of small size.
Embodiment 3
[0024] This embodiment is further limited on the basis of embodiment 2: figure 1 , It also includes a follower block 2 fixed on the valve stem 5. The side surface of the free end of the slot seat 7 is also provided with an arc whose length is within one-third to one-half of the circumference of the slot seat 7 Notch, the card slots 6 are evenly distributed in the area outside the arc-shaped notch on the free end, and the follower block 2 is located in the arc-shaped notch.
[0025] In order to make the spring 3 rotate at the same angular velocity with the valve stem 5 and avoid excessive distortion of the spring 3 when adjusting the opening of the butterfly valve, the two ends of the spring 3 are in contact with the follower block 2 and the handle 1 respectively.
[0026] The following block 2 is also provided with a blind hole, and the spring 3 is partially located in the blind hole.
[0027] The set follower block 2 is used to limit the rotation angle of the valve stem 5, and can ...
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