Sealing cover and sealing container

Abstract

This disclosure provides a sealing cover, belonging to the technical field of sealing containers. The sealing cover comprises: a cover body provided with a through hole; a knob, rotatably arranged on one side of the cover body and provided with protrusion parts; a bottom plate, movably arranged on the other side of the cover body and able to move close to or away from the cover body, the bottom plate being provided with a linkage part, the linkage part passing through the through hole, spiral grooves being formed in a peripheral surface of the linkage part, the protrusion parts being connected to the spiral grooves and able to move along the spiral grooves; and a seal ring arranged between the bottom plate and the cover body. Further provided is a sealing container, comprising a sealing cover and a container body, wherein a cover body of the sealing cover is fitted to cover the container body. This disclosure has the beneficial effects as follows: the knob is rotated to drive the bottom plate to move close to or away from the cover body. When the bottom plate is close to the cover body, the seal ring can be squeezed and deformed to open outward, so that the seal ring pushes against and is connected to the inner wall of the container to achieve the sealing effect, and the operation is simple and convenient.

1 . A sealing cover comprising:
 a cover body provided with a through hole;   a knob, rotatably arranged on one side of the cover body and provided with protrusion parts;   a bottom plate, movably arranged on the other side of the cover body and able to move close to or away from the cover body, the bottom plate being provided with a linkage part, the linkage part passing through the through hole, spiral grooves being formed in a peripheral surface of the linkage part, the protrusion parts being connected to the spiral grooves and able to move along the spiral grooves, and when the knob is rotated, the bottom plate being driven through the protrusion parts to move close to the cover body or away from the cover body; and   a seal ring arranged between the bottom plate and the cover body, the seal ring being pressed and deformed to open outward when the bottom plate is close to the cover body.   
     
     
         2 . The sealing cover according to  claim 1 , wherein each said spiral groove is internally provided with a stroke limit block, the knob is further provided with an elastic sheet part, the protrusion parts are arranged on the elastic sheet part, and the protrusion parts can pass over the stroke limit blocks through the deformation of the elastic sheet part to separate the bottom plate from the knob. 
     
     
         3 . The sealing cover according to  claim 2 , wherein the cover body is provided with a limit bump located at an edge of the through hole, and the protrusion parts are connected to the limit bump by way of pushing against the limit bump after passing over the stroke limit blocks. 
     
     
         4 . The sealing cover according to  claim 1 , wherein the cover body is provided with a recess part recessed toward the bottom plate, the through hole is located in the recess part, and the knob is arranged on the recess part and aligned with the through hole. 
     
     
         5 . The sealing cover according to  claim 1 , wherein the bottom plate is provided with a guide column extending in the movement direction of the bottom plate, the knob is provided with a guide sleeve, and the guide column is inserted in the guide sleeve and can guide the movement of the bottom plate. 
     
     
         6 . The sealing cover according to  claim 5 , wherein the cover body is provided with a limit groove extending in the movement direction of the bottom plate, a lower end of the seal ring is fixedly connected to the bottom plate, and an upper end of the seal ring is mounted in the limit groove. 
     
     
         7 . The sealing cover according to  claim 1 , wherein at least two spiral grooves and at least two protrusion parts are provided, and the protrusion parts are connected to the corresponding spiral grooves, respectively. 
     
     
         8 . The sealing cover according to  claim 1 , wherein the bottom plate is provided with reinforcing ribs. 
     
     
         9 . A sealing container comprising:
 the sealing cover according to  claim 1 ; and   a container body, wherein a cover body of the sealing cover is fitted to cover the container body, and the seal ring of the sealing cover is connected to an inner wall of the container body by way of pushing against the inner wall of the container body when deformed to open outward.