Sealing structure of vacuum dewatering box

Abstract

The invention provides a sealing structure of a vacuum dewatering box, and relates to the technical field of paperboard production. A taking and placing box opening is formed in the top of the pressure-resistant box body plate, a movable screwing ring is installed at the top of the taking and placing box opening, a pressure-resistant transparent sealing plate is fixedly installed at the top of the movable screwing ring through a bolt, and the contact portion of the pressure-resistant transparent sealing plate and the movable screwing ring is coated with sealant; a movable locking ratchet ring is installed outside the taking and placing box opening, and the top of the movable locking ratchet ring makes contact with the movable screwing ring. The movable locking ratchet ring is used for rotating, locking and fixing the movable screwing ring, the movable screwing ring is prevented from loosening, and the vacuum dehydration sealing effect of the rubber sealing ring on paperboards in the vacuum dehydration box is guaranteed. The problems that when the sealing structure of the vacuum dewatering box is used, a sealing component is prone to loosening, so that sealing is not tight, an operator needs to fix the sealing component again, and the using effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cardboard production, and particularly to a sealing structure of a vacuum dewatering tank. Background Art

[0002] With the booming development of the logistics and transportation industry, the annual consumption of cardboard shows a gradually increasing trend. The vacuum dewatering tank is an essential dewatering component in the cardboard production process and plays a very important role in the production process. The excess water in the cardboard is removed by the vacuum suction of the vacuum dewatering tank. In order to ensure the internal vacuum tightness of the vacuum dewatering tank, a special sealing structure needs to be equipped.

[0003] The sealing structure of the vacuum dewatering tank can refer to Patent No. CN103662375B, which includes a box body, a box cover covering the box body, and a sealing ring provided on the joint surface of the box body and the box cover. The box body and the box cover are matched by an annular groove and an annular flange. The sealing ring is placed in the annular groove, and the annular flange is tenoned in the annular groove and presses the sealing ring. The annular groove is provided on the box cover or the box body, and the annular flange is provided on the box body or the box cover. An annular protrusion for abutting against the bottom of the sealing ring is further provided on the annular flange, and the cross section of the annular protrusion is semi-circular; both the annular groove and the annular flange are provided with chamfers, and the bottom of the annular groove is arc-shaped; the sealing structure is simple and has good sealing performance.

[0004] When the existing sealing structure of the vacuum dewatering tank is in use, the opening and closing process of the sealing component is relatively cumbersome, and both hands need to be synchronized to cooperate to achieve the opening and closing of the sealing component, which takes a long time. Moreover, the sealing component is extremely prone to looseness during use, resulting in poor sealing, and the operator needs to re-fix the sealing component, and the use effect is poor. Summary of the Invention

[0005] In view of this, the present invention provides a sealing structure of a vacuum dewatering tank to solve the problems that when the existing sealing structure of the vacuum dewatering tank is in use, the opening and closing process of the sealing component is relatively cumbersome, both hands need to be synchronized to cooperate to achieve the opening and closing of the sealing component, which takes a long time, and the sealing component is extremely prone to looseness during use, resulting in poor sealing, and the operator needs to re-fix the sealing component, and the use effect is poor.

[0006] The present invention provides a sealing structure for a vacuum dewatering tank, which specifically includes: a pressure-resistant box body plate; a pick-and-place box opening is provided at the top of the pressure-resistant box body plate, and a movable tightening ring is installed at the top of the pick-and-place box opening. Moreover, a pressure-resistant transparent sealing plate is fixedly installed at the top of the movable tightening ring through bolts. A sealing glue is applied to the contact part between the pressure-resistant transparent sealing plate and the movable tightening ring; an active locking ratchet ring is installed outside the pick-and-place box opening, and the top of the active locking ratchet ring is in contact with the movable tightening ring; a pressure-sensitive piston is installed inside the pressure-resistant transparent sealing plate; a manual opening and closing frame, the manual opening and closing frame is located at the top of the movable tightening ring, the top of the manual opening and closing frame is in a ring shape, and the manual opening and closing frame is in contact with the active locking ratchet ring; the bottom of the manual opening and closing frame is connected with a driven opening ring, and the driven opening ring is in contact with the top of the movable tightening ring.

[0007] Further, the bottom of the movable tightening ring is inserted into the pick-and-place box opening. A rubber sealing ring is sleeved outside the bottom of the movable tightening ring. The top side of the rubber sealing ring is in contact with the movable tightening ring, and the outer side and the bottom side of the rubber sealing ring are in contact with the inner side of the pick-and-place box opening.

[0008] Further, force-receiving downward inclined blocks are provided in a surrounding shape on the inner side of the pick-and-place box opening, and force-receiving upward inclined blocks are provided in a surrounding shape on the outer side of the bottom of the movable tightening ring. The top inclined surface of the force-receiving upward inclined block provided on the movable tightening ring is in contact with the bottom inclined surface of the force-receiving downward inclined block provided on the pick-and-place box opening. After the bottom of the movable tightening ring is inserted into the pick-and-place box opening, rotate the movable tightening ring so that the top inclined surface of the force-receiving upward inclined block provided on the movable tightening ring is in contact with the bottom inclined surface of the force-receiving downward inclined block provided on the pick-and-place box opening, driving the movable tightening ring to move downward, and applying pressure to the rubber sealing ring through the movable tightening ring.

[0009] Further, the active locking ratchet ring is slidably connected to the outside of the pick-and-place box opening. Guide convex strips are provided in a surrounding shape on the outside of the pick-and-place box opening, and guide grooves are provided in a surrounding shape on the inner side of the active locking ratchet ring. The guide convex strips provided on the pick-and-place box opening are slidably connected to the guide grooves provided on the active locking ratchet ring. Through the sliding fit of the guide convex strips and the guide grooves, the guiding and limiting effect on the active locking ratchet ring is achieved.

[0010] Further, a fixed locking ratchet ring is provided on the outside of the movable tightening ring. The top inclined teeth of the active locking ratchet ring are meshed with the bottom inclined teeth of the fixed locking ratchet ring. A fixed magnetic ring is fixedly connected to the outside of the pick-and-place box opening, and a movable magnetic ring is fixedly connected to the bottom of the active locking ratchet ring. The movable magnetic ring is located above the fixed magnetic ring, and the bottom magnetic pole of the movable magnetic ring is the same as the top magnetic pole of the fixed magnetic ring. When the movable tightening ring is rotated and tightened, using the principle of like poles repelling each other, the movable magnetic ring drives the active locking ratchet ring to move upward, so that the top inclined teeth of the active locking ratchet ring are meshed with the bottom inclined teeth of the fixed locking ratchet ring.

[0011] Further, a pressure measuring activity chamber is provided inside the pressure-resistant transparent sealing plate. The bottom of the pressure measuring activity chamber is communicated with the access opening of the pick-and-place box, and the top of the pressure measuring activity chamber is communicated with the outside. A pressure-sensitive piston is slidably connected inside the pressure measuring activity chamber. A small sealing ring is installed in the outer groove of the pressure-sensitive piston, and the outer side of the small sealing ring is in sliding contact with the inner wall of the pressure measuring activity chamber.

[0012] Further, a piston rod is provided at the top of the pressure-sensitive piston. The top end of the piston rod is located outside the pressure measuring activity chamber. A pressure-sensitive spring is sleeved outside the piston rod. The top end of the pressure-sensitive spring is in contact with the top end of the piston rod, and the bottom end of the pressure-sensitive spring is in contact with the top side of the pressure-resistant transparent sealing plate. When the vacuum dehydration tank is in a negative pressure vacuum state, the pressure-sensitive piston moves to the lowest end of the pressure measuring activity chamber under the influence of the negative pressure vacuum, and the pressure-sensitive spring is in a compressed state. When the air pressure inside the vacuum dehydration tank is equal to the external atmospheric pressure, the pressure-sensitive piston moves to the topmost end of the pressure measuring activity chamber under the influence of the thrust of the pressure-sensitive spring, and the piston rod is in a protruding state.

[0013] Further, force-receiving convex blocks are provided in a surrounding shape on the outer side of the movable locking ratchet ring. The bottom of the manual opening and closing frame is in contact with the top side of the force-receiving convex blocks provided on the movable locking ratchet ring. Driving docking grooves are provided in a surrounding shape on the top of the movable tightening ring. Opening convex blocks are provided in a surrounding shape on the periphery of the driven opening ring. The positions of the opening convex blocks correspond to the positions of the driving docking grooves. The opening convex blocks provided on the driven opening ring are inserted into the driving docking grooves provided on the movable tightening ring.

[0014] Further, guiding sliding holes are provided in a surrounding shape on the top of the manual opening and closing frame. Guiding sliding rods are provided in a surrounding shape on the top side of the driven opening ring. The guiding sliding rods provided on the driven opening ring slidably penetrate through the guiding sliding holes provided on the manual opening and closing frame. A force-applying spring is sleeved outside the guiding sliding rods. The top end of the force-applying spring is in contact with the bottom side of the manual opening and closing frame, and the bottom end of the force-applying spring is in contact with the top side of the driven opening ring. Through the sliding fit of the guiding sliding rods and the guiding sliding holes, the manual opening and closing frame can drive the driven opening ring to rotate synchronously. When the bottom of the manual opening and closing frame is in contact with the top side of the force-receiving convex block, the force-applying spring applies a thrust to the top of the driven opening ring, and the opening convex block is inserted into the driving docking groove under the influence of the thrust of the force-applying spring. While pressing down the manual opening and closing frame and rotating it, the helical teeth at the top of the movable locking ratchet ring are separated from the helical teeth at the bottom of the fixed locking ratchet ring, and the manual opening and closing frame drives the driven opening ring to rotate, and the driven opening ring can drive the movable tightening ring to rotate in the reverse direction.

[0015] Further, closing convex blocks are provided in a surrounding shape on the top side of the manual opening and closing frame. The positions of the closing convex blocks correspond to the positions of the driving docking grooves. The closing convex blocks provided on the manual opening and closing frame are inserted into the driving docking grooves provided on the top of the movable tightening ring. When it is necessary to install the movable tightening ring on the top of the access opening of the pick-and-place box for sealing, turn the manual opening and closing frame over so that the top of the manual opening and closing frame faces downwards, and insert the closing convex blocks provided on the top of the manual opening and closing frame into the driving docking grooves, and drive the movable tightening ring to rotate through the manual opening and closing frame.

[0016] The beneficial effects are as follows: 1. After the bottom of the movable tightening ring is inserted into the access opening of the pick - and - place box in the present invention, rotate the movable tightening ring so that the top inclined surface of the force - receiving upper inclined block provided on the movable tightening ring contacts the bottom inclined surface of the force - receiving lower inclined block provided on the access opening of the pick - and - place box, driving the movable tightening ring to move downward. By applying pressure to the rubber sealing ring through the movable tightening ring, the rubber sealing ring is closely attached to the access opening of the pick - and - place box, ensuring the vacuum dehydration sealing effect of the cardboard inside the vacuum dehydration box. Through the sliding fit of the guiding convex strip and the guiding groove, it plays a guiding and limiting effect on the movable locking ratchet ring, enabling the movable locking ratchet ring to only slide up and down along the guiding convex strip, avoiding the rotation of the movable locking ratchet ring. When the movable tightening ring is rotated and tightened, using the principle of like - pole repulsion, the movable magnetic ring drives the movable locking ratchet ring to move upward, making the top inclined teeth of the movable locking ratchet ring engage with the bottom inclined teeth of the fixed locking ratchet ring. The movable locking ratchet ring locks and fixes the rotation of the movable tightening ring, ensuring the stability of the state of the movable tightening ring, and thus ensuring the vacuum dehydration sealing effect of the cardboard inside the vacuum dehydration box by the rubber sealing ring.

[0017] 2. When the vacuum dehydration box is in a negative - pressure vacuum state in the present invention, the pressure - sensitive piston moves to the lowest end of the pressure - measuring movable cavity under the influence of the negative - pressure vacuum, and the pressure - sensitive spring is in a compressed state. When the internal air pressure of the vacuum dehydration box is equal to the external atmospheric pressure, the pressure - sensitive piston moves to the topmost end of the pressure - measuring movable cavity under the influence of the thrust of the pressure - sensitive spring, and the piston rod protrudes. It is possible to determine the internal pressure state of the vacuum dehydration box according to whether the piston rod protrudes outward, so as to open it when the internal air pressure of the vacuum dehydration box is equal to the external atmospheric pressure. Through the sliding fit of the guiding slide rod and the guiding slide hole, the manual opening - closing frame can drive the driven opening ring to rotate synchronously. When the bottom of the manual opening - closing frame contacts the top side of the force - receiving convex block, the biasing spring applies a thrust to the top of the driven opening ring, and the opening convex block is inserted into the driving docking groove under the influence of the thrust of the biasing spring. While pressing down the manual opening - closing frame and rotating it, the top inclined teeth of the movable locking ratchet ring are separated from the bottom inclined teeth of the fixed locking ratchet ring. The manual opening - closing frame drives the driven opening ring to rotate, and the driven opening ring drives the movable tightening ring to rotate in the reverse direction. While the movable tightening ring rotates in the reverse direction, it moves upward, and the movable tightening ring can be disassembled from the top of the access opening of the pick - and - place box with one hand, which is more convenient to operate. When it is necessary to install the movable tightening ring on the top of the access opening of the pick - and - place box for sealing, turn the manual opening - closing frame over so that the top of the manual opening - closing frame faces downward, insert the closing convex block provided on the top of the manual opening - closing frame into the driving docking groove, and drive the movable tightening ring to rotate through the manual opening - closing frame, then the vacuum dehydration box sealing operation can be completed, which is convenient to operate.

[0018] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below.

[0020] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0021] In the accompanying drawings: Figure 1 It is a schematic diagram of the connection structure between the movable tightening ring and the driven opening ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection structure between the manual opening and closing frame and the movable tightening ring in the inverted state of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the sealed connection structure between the pressure-resistant box body plate and the movable tightening ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the sectional structure of the connection part between the pressure-resistant box body plate and the movable tightening ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the connection structure between the access box opening and the movable locking ratchet ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0027] Figure 7 It is an axonometric structure schematic diagram of the access box opening of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0028] Figure 8 It is a schematic diagram of the split structure between the movable tightening ring and the pressure-resistant transparent sealing plate of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0029] Figure 9 It is an axonometric structure schematic diagram of the bottom of the movable tightening ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0030] Figure 10 It is a schematic diagram of the connection structure between the manual opening and closing frame and the driven opening ring of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0031] Figure 11 It is an axonometric structure schematic diagram of the manual opening and closing frame of the sealing structure of the vacuum dewatering tank in the embodiment of the present invention.

[0032] Figure 12 It is a schematic side view of the driven opening ring shaft of the sealing structure of the vacuum dewatering tank according to an embodiment of the present invention.

[0033] List of reference numerals 1. Pressure-resistant box body plate; 101. Access opening; 1011. Stress inclined block; 1012. Guide rib; 2. Movable tightening ring; 201. Stress upper inclined block; 202. Fixed locking ratchet ring; 203. Driving docking groove; 3. Pressure-resistant transparent sealing plate; 301. Pressure measuring cavity; 4. Rubber sealing ring; 5. Movable locking ratchet ring; 501. Guide groove; 502. Stress convex block; 6. Fixed magnetic ring; 7. Movable magnetic ring; 8. Pressure-sensitive piston; 801. Piston rod; 9. Small sealing ring; 10. Pressure-sensitive spring; 11. Manual opening and closing frame; 1101. Guide sliding hole; 1102. Closing convex block; 12. Driven opening ring; 1201. Opening convex block; 1202. Guide sliding rod; 13. Force-applying spring. Detailed implementation mode

[0034] Embodiment 1: Please refer to Figures 1 to 12 as shown in The present invention provides a sealing structure for a vacuum dewatering tank, which includes a pressure-resistant box body plate 1 and a manual opening and closing frame 11; a pick-up and placement box opening 101 is provided at the top of the pressure-resistant box body plate 1, and a movable tightening ring 2 is installed at the top of the pick-up and placement box opening 101. A pressure-resistant transparent sealing plate 3 is fixedly installed at the top of the movable tightening ring 2 through bolts. A sealing glue is applied to the contact part between the pressure-resistant transparent sealing plate 3 and the movable tightening ring 2; the bottom of the movable tightening ring 2 is inserted into the pick-up and placement box opening 101, and a rubber sealing ring 4 is sleeved on the outer side of the bottom of the movable tightening ring 2. The top side of the rubber sealing ring 4 is in contact with the movable tightening ring 2, and the outer side and the bottom side of the rubber sealing ring 4 are in contact with the inner side of the pick-up and placement box opening 101; a force-receiving downward inclined block 1011 is provided in a surrounding shape on the inner side of the pick-up and placement box opening 101, and a force-receiving upward inclined block 201 is provided in a surrounding shape on the outer side of the bottom of the movable tightening ring 2. The top inclined surface of the force-receiving upward inclined block 201 provided on the movable tightening ring 2 is in contact with the bottom inclined surface of the force-receiving downward inclined block 1011 provided on the pick-up and placement box opening 101. After the bottom of the movable tightening ring 2 is inserted into the pick-up and placement box opening 101, the movable tightening ring 2 is rotated so that the top inclined surface of the force-receiving upward inclined block 201 provided on the movable tightening ring 2 is in contact with the bottom inclined surface of the force-receiving downward inclined block 1011 provided on the pick-up and placement box opening 101, driving the movable tightening ring 2 to move downward, applying pressure to the rubber sealing ring 4 through the movable tightening ring 2, so that the rubber sealing ring 4 is closely attached to the pick-up and placement box opening 101, ensuring the vacuum dehydration sealing effect of the cardboard inside the vacuum dewatering tank; a movable locking ratchet ring 5 is installed outside the pick-up and placement box opening 101, and the top of the movable locking ratchet ring 5 is in contact with the movable tightening ring 2; the movable locking ratchet ring 5 is slidably connected to the outside of the pick-up and placement box opening 101. A guiding convex strip 1012 is provided in a surrounding shape on the outside of the pick-up and placement box opening 101, and a guiding groove 501 is provided in a surrounding shape on the inner side of the movable locking ratchet ring 5. The guiding convex strip 1012 provided on the pick-up and placement box opening 101 is slidably connected to the guiding groove 501 provided on the movable locking ratchet ring 5. Through the sliding cooperation of the guiding convex strip 1012 and the guiding groove 501, the guiding and limiting effect on the movable locking ratchet ring 5 is achieved, so that the movable locking ratchet ring 5 can only slide up and down along the guiding convex strip 1012, avoiding the occurrence of the situation where the movable locking ratchet ring 5 rotates; a pressure-sensitive piston 8 is installed inside the pressure-resistant transparent sealing plate 3; the manual opening and closing frame 11 is located at the top of the movable tightening ring 2. The top of the manual opening and closing frame 11 is in a ring structure, and the manual opening and closing frame 11 is in contact with the movable locking ratchet ring 5; a driven opening ring 12 is connected to the bottom of the manual opening and closing frame 11, and the driven opening ring 12 is in contact with the top of the movable tightening ring 2.

[0035] Refer to the attached Figure 3 , Figure 4 and Figure 5As shown, a fixed locking ratchet ring 202 is provided outside the movable tightening ring 2. The top helical teeth of the movable locking ratchet ring 5 are engaged with the bottom helical teeth of the fixed locking ratchet ring 202. A fixed magnetic ring 6 is fixedly connected to the outside of the access opening 101 of the box. A movable magnetic ring 7 is fixedly connected to the bottom of the movable locking ratchet ring 5. The movable magnetic ring 7 is located above the fixed magnetic ring 6. The bottom magnetic pole of the movable magnetic ring 7 is the same as the top magnetic pole of the fixed magnetic ring 6. With the above technical solution, when the movable tightening ring 2 is rotated and tightened, using the principle of like poles repelling each other, the movable magnetic ring 7 drives the movable locking ratchet ring 5 to move upward, so that the top helical teeth of the movable locking ratchet ring 5 are engaged with the bottom helical teeth of the fixed locking ratchet ring 202. The movable tightening ring 2 is rotationally locked and fixed through the movable locking ratchet ring 5, ensuring the stability of the state of the movable tightening ring 2, thereby ensuring the vacuum dehydration sealing effect of the rubber sealing ring 4 on the cardboard inside the vacuum dehydration tank.

[0036] Refer to the appendix Figure 4 and Figure 7 As shown, a pressure measuring movable cavity 301 is provided inside the pressure-resistant transparent sealing plate 3. The bottom of the pressure measuring movable cavity 301 is communicated with the access opening 101 of the box. The top of the pressure measuring movable cavity 301 is communicated with the outside. A pressure sensing piston 8 is slidably connected inside the pressure measuring movable cavity 301. A small sealing ring 9 is installed in the groove outside the pressure sensing piston 8. The outside of the small sealing ring 9 is in sliding contact with the inner wall of the pressure measuring movable cavity 301. A piston rod 801 is provided at the top of the pressure sensing piston 8. The top end of the piston rod 801 is located outside the pressure measuring movable cavity 301. A pressure sensing spring 10 is sleeved outside the piston rod 801. The top end of the pressure sensing spring 10 is in contact with the top end of the piston rod 801. The bottom end of the pressure sensing spring 10 is in contact with the top side of the pressure-resistant transparent sealing plate 3. With the above technical solution, when the vacuum dehydration tank is in a negative pressure vacuum state, the pressure sensing piston 8 is affected by the negative pressure vacuum and moves to the lowest end of the pressure measuring movable cavity 301, and the pressure sensing spring 10 is in a compressed state. When the internal air pressure of the vacuum dehydration tank is equal to the external atmospheric pressure, the pressure sensing piston 8 is affected by the thrust of the pressure sensing spring 10 and moves to the topmost end of the pressure measuring movable cavity 301, and the piston rod 801 is in a protruding state. It is possible to determine the internal pressure state of the vacuum dehydration tank according to whether the piston rod 801 protrudes outward, so as to open when the internal air pressure of the vacuum dehydration tank is equal to the external atmospheric pressure.

[0037] Refer to the appendix Figure 1 、 Figure 9 and Figure 10As shown in the figure, force-bearing bumps 502 are arranged in a surrounding shape on the outer side of the movable locking ratchet ring 5. The bottom of the manual opening and closing frame 11 is in contact with the top side of the force-bearing bumps 502 provided on the movable locking ratchet ring 5. A driving docking groove 203 is arranged in a surrounding shape at the top of the movable tightening ring 2. Opening bumps 1201 are arranged in a surrounding shape on the periphery of the driven opening ring 12. The position of the opening bumps 1201 corresponds to the position of the driving docking groove 203. The opening bumps 1201 provided on the driven opening ring 12 are inserted into the driving docking groove 203 provided on the movable tightening ring 2. Guide sliding holes 1101 are arranged in a surrounding shape at the top of the manual opening and closing frame 11. Guide sliding rods 1202 are arranged in a surrounding shape on the top side of the driven opening ring 12. The guide sliding rods 1202 provided on the driven opening ring 12 slide through the guide sliding holes 1101 provided on the manual opening and closing frame 11. A force-applying spring 13 is sleeved outside the guide sliding rods 1202. The top end of the force-applying spring 13 is in contact with the bottom side of the manual opening and closing frame 11, and the bottom end of the force-applying spring 13 is in contact with the top side of the driven opening ring 12; With the above technical solution, through the sliding fit of the guide sliding rod 1202 and the guide sliding hole 1101, the manual opening and closing frame 11 can drive the driven opening ring 12 to rotate synchronously. When the bottom of the manual opening and closing frame 11 is in contact with the top side of the force-bearing bump 502, the force-applying spring 13 applies a thrust to the top of the driven opening ring 12. Affected by the thrust of the force-applying spring 13, the opening bump 1201 is inserted into the driving docking groove 203. While pressing down the manual opening and closing frame 11 and rotating it, the inclined teeth at the top of the movable locking ratchet ring 5 are separated from the inclined teeth at the bottom of the fixed locking ratchet ring 202. The manual opening and closing frame 11 drives the driven opening ring 12 to rotate, and the driven opening ring 12 drives the movable tightening ring 2 to rotate in the reverse direction. While the movable tightening ring 2 rotates in the reverse direction, it moves upward, and the movable tightening ring 2 can be disassembled from the top of the access opening 101 with one hand, and the operation is more convenient.

[0038] Embodiment 2: Refer to Figure 2 and Figure 11 As shown in the figure, closing bumps 1102 are arranged in a surrounding shape on the top side of the manual opening and closing frame 11. The position of the closing bumps 1102 corresponds to the position of the driving docking groove 203. The closing bumps 1102 provided on the manual opening and closing frame 11 are inserted into the driving docking groove 203 provided at the top of the movable tightening ring 2; With the above technical solution, when it is necessary to install the movable tightening ring 2 on the top of the access opening 101 for sealing, turn the manual opening and closing frame 11 over so that the top of the manual opening and closing frame 11 faces downward, insert the closing bumps 1102 provided on the top of the manual opening and closing frame 11 into the driving docking groove 203, and drive the movable tightening ring 2 to rotate through the manual opening and closing frame 11, and the vacuum dewatering tank sealing operation can be completed, which is convenient for operation.

[0039] Specific usage and functions of this embodiment: In the present invention, when it is necessary to seal the pick-and-place box opening 101, the staff inserts the bottom of the movable tightening ring 2 into the pick-and-place box opening 101. The force-receiving upper inclined block 201 is located at the interval between two adjacent force-receiving lower inclined blocks 1011. The manual opening and closing frame 11 is turned over so that the top of the manual opening and closing frame 11 faces downward, and the closing convex block 1102 provided at the top of the manual opening and closing frame 11 is inserted into the driving docking groove 203. By driving the movable tightening ring 2 to rotate through the manual opening and closing frame 11, the top inclined surface of the force-receiving upper inclined block 201 provided on the movable tightening ring 2 is brought into contact with the bottom inclined surface of the force-receiving lower inclined block 1011 provided on the pick-and-place box opening 101, driving the movable tightening ring 2 to move downward, and applying pressure to the rubber sealing ring 4 through the movable tightening ring 2, so that the rubber sealing ring 4 is closely attached to the pick-and-place box opening 101, realizing the vacuum dehydration sealing effect of the cardboard inside the vacuum dehydration box; after the movable tightening ring 2 is rotated and tightened, using the principle of like poles repelling each other, the movable magnetic ring 7 is repelled by the magnetic force of the fixed magnetic ring 6, and the movable magnetic ring 7 drives the movable locking ratchet ring 5 to move upward, so that the top inclined teeth of the movable locking ratchet ring 5 are engaged with the bottom inclined teeth of the fixed locking ratchet ring 202, and the movable tightening ring 2 is rotationally locked and fixed through the movable locking ratchet ring 5, preventing the movable tightening ring 2 from rotating and loosening; when the vacuum dehydration box is in a negative pressure vacuum state, the pressure-sensitive piston 8 moves to the lowest end of the pressure-measuring movable cavity 301 under the influence of the negative pressure vacuum, and the pressure-sensitive spring 10 is in a compressed state. When the internal air pressure of the vacuum dehydration box is equal to the external atmospheric pressure, the pressure-sensitive piston 8 moves to the topmost end of the pressure-measuring movable cavity 301 under the influence of the thrust of the pressure-sensitive spring 10, and the piston rod 801 is in a protruding state. Thus, it is possible to determine the internal pressure state of the vacuum dehydration box according to whether the piston rod 801 protrudes outward; through the sliding fit of the guiding slide rod 1202 and the guiding slide hole 1101, the manual opening and closing frame 11 can drive the driven opening ring 12 to rotate synchronously; when the cardboard inside the vacuum dehydration box needs to be taken out after the vacuum dehydration is completed, the internal air pressure of the vacuum dehydration box is equal to the external atmospheric pressure, the piston rod 801 is in a protruding state, the bottom of the manual opening and closing frame 11 is in contact with the top side of the force-receiving convex block 502, the biasing spring 13 applies a thrust to the top of the driven opening ring 12, and the opening convex block 1201 is inserted into the driving docking groove 203 under the influence of the thrust of the biasing spring 13. While pressing down the manual opening and closing frame 11 and rotating it, the top inclined teeth of the movable locking ratchet ring 5 are separated from the bottom inclined teeth of the fixed locking ratchet ring 202, and the movable locking ratchet ring 5 loses the locking effect on the movable tightening ring 2. The manual opening and closing frame 11 drives the driven opening ring 12 to rotate, the driven opening ring 12 drives the movable tightening ring 2 to rotate in the reverse direction, and while the movable tightening ring 2 rotates in the reverse direction, it moves upward, and thus the movable tightening ring 2 can be disassembled from the top of the pick-and-place box opening 101 with one hand.

Claims

1. The sealing structure of a vacuum dewatering tank, characterized in that, Comprising: A pressure-resistant box body plate (1); a placing and taking box opening (101) is provided at the top of the pressure-resistant box body plate (1), and a movable tightening ring (2) is installed at the top of the placing and taking box opening (101). Moreover, a pressure-resistant transparent sealing plate (3) is fixedly installed at the top of the movable tightening ring (2) through bolts, and a sealing glue is applied to the contact part between the pressure-resistant transparent sealing plate (3) and the movable tightening ring (2); an active locking ratchet ring (5) is installed outside the placing and taking box opening (101), and the top of the active locking ratchet ring (5) is in contact with the movable tightening ring (2); a pressure-sensitive piston (8) is installed inside the pressure-resistant transparent sealing plate (3); a manual opening and closing frame (11), the manual opening and closing frame (11) is located at the top of the movable tightening ring (2), the top of the manual opening and closing frame (11) is in a ring structure, and the manual opening and closing frame (11) is in contact with the active locking ratchet ring (5); the bottom of the manual opening and closing frame (11) is connected with a driven opening ring (12), and the driven opening ring (12) is in contact with the top of the movable tightening ring (2).

2. The sealing structure of the vacuum dewatering tank according to claim 1, wherein: The bottom of the movable tightening ring (2) is inserted into the placing and taking box opening (101), and a rubber sealing ring (4) is sleeved outside the bottom of the movable tightening ring (2). The top side of the rubber sealing ring (4) is in contact with the movable tightening ring (2), and the outer side and the bottom side of the rubber sealing ring (4) are in contact with the inner side of the placing and taking box opening (101).

3. The sealing structure of the vacuum dewatering tank according to claim 1, characterized in that: Force-receiving downward inclined blocks (1011) are arranged in a surrounding shape on the inner side of the placing and taking box opening (101), and force-receiving upward inclined blocks (201) are arranged in a surrounding shape on the outer side of the bottom of the movable tightening ring (2). The top inclined surface of the force-receiving upward inclined block (201) provided on the movable tightening ring (2) is in contact with the bottom inclined surface of the force-receiving downward inclined block (1011) provided on the placing and taking box opening (101).

4. The sealing structure of the vacuum dewatering tank according to claim 1, characterized in that: The active locking ratchet ring (5) is slidably connected to the outside of the placing and taking box opening (101). Guide convex strips (1012) are arranged in a surrounding shape on the outside of the placing and taking box opening (101), and guide grooves (501) are arranged in a surrounding shape on the inner side of the active locking ratchet ring (5). The guide convex strips (1012) provided on the placing and taking box opening (101) are slidably connected to the guide grooves (501) provided on the active locking ratchet ring (5).

5. The sealing structure of the vacuum dewatering tank according to claim 1, characterized in that: A fixed locking ratchet ring (202) is provided on the outside of the movable tightening ring (2). The top inclined teeth of the active locking ratchet ring (5) are meshed with the bottom inclined teeth of the fixed locking ratchet ring (202). A fixed magnetic ring (6) is fixedly connected to the outside of the placing and taking box opening (101), and an active magnetic ring (7) is fixedly connected to the bottom of the active locking ratchet ring (5). The active magnetic ring (7) is located above the fixed magnetic ring (6), and the bottom magnetic pole of the active magnetic ring (7) is the same as the top magnetic pole of the fixed magnetic ring (6).

6. The sealing structure of the vacuum dehydration tank according to claim 1, characterized in that: A pressure measurement active cavity (301) is provided inside the pressure-resistant transparent sealing plate (3). The bottom of the pressure measurement active cavity (301) is communicated with the placing and taking box opening (101), and the top of the pressure measurement active cavity (301) is communicated with the outside. The pressure-sensitive piston (8) is slidably connected to the pressure measurement active cavity (301). A small sealing ring (9) is installed in the outer groove of the pressure-sensitive piston (8), and the outer side of the small sealing ring (9) is in sliding contact with the inner wall of the pressure measurement active cavity (301).

7. The sealing structure of the vacuum dewatering tank according to claim 6, wherein: The top of the pressure-sensitive piston (8) is provided with a piston rod (801). The top end of the piston rod (801) is located outside the pressure-measuring activity chamber (301). A pressure-sensitive spring (10) is sleeved outside the piston rod (801). The top end of the pressure-sensitive spring (10) is in contact with the top end of the piston rod (801), and the bottom end of the pressure-sensitive spring (10) is in contact with the top side of the pressure-resistant transparent sealing plate (3).

8. The sealing structure of the vacuum dewatering tank according to claim 1, characterized in that: Force-receiving bumps (502) are provided in a surrounding shape on the outer side of the movable locking ratchet ring (5). The bottom of the manual opening and closing frame (11) is in contact with the top side of the force-receiving bumps (502) provided on the movable locking ratchet ring (5). Driving docking grooves (203) are provided in a surrounding shape on the top of the movable tightening ring (2). Opening bumps (1201) are provided in a surrounding shape on the periphery of the driven opening ring (12). The position of the opening bumps (1201) corresponds to the position of the driving docking grooves (203). The opening bumps (1201) provided on the driven opening ring (12) are inserted into the driving docking grooves (203) provided on the movable tightening ring (2).

9. The sealing structure of the vacuum dewatering tank according to claim 1, characterized in that: Guide sliding holes (1101) are provided in a surrounding shape on the top of the manual opening and closing frame (11). Guide sliding rods (1202) are provided in a surrounding shape on the top side of the driven opening ring (12). The guide sliding rods (1202) provided on the driven opening ring (12) slide through the guide sliding holes (1101) provided on the manual opening and closing frame (11). A force-applying spring (13) is sleeved outside the guide sliding rods (1202). The top end of the force-applying spring (13) is in contact with the bottom side of the manual opening and closing frame (11), and the bottom end of the force-applying spring (13) is in contact with the top side of the driven opening ring (12).

10. The sealing structure of the vacuum dewatering tank according to claim 8, characterized in that: Closing bumps (1102) are provided in a surrounding shape on the top side of the manual opening and closing frame (11). The position of the closing bumps (1102) corresponds to the position of the driving docking grooves (203). The closing bumps (1102) provided on the manual opening and closing frame (11) are inserted into the driving docking grooves (203) provided on the top of the movable tightening ring (2).

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