A safety interlock device for a quick-opening pressure vessel

Abstract

The present invention discloses a safety interlock device for a quick-opening pressure vessel, belonging to the technical field of safety locks. A safety interlock device for a quick-opening pressure vessel includes a base and a container body fixedly installed above it. A plurality of side wing plates are fixedly installed on the top surface of the container body, and a detachable blind plate cover is arranged on the top surface of the container body. Fixed plates with the same number as the side wing plates are fixedly installed on the side surface of the blind plate cover. For this safety interlock device for a quick-opening pressure vessel, compared with traditional safety locks, this safety interlock is interrelated with the pressure relief valve. When there is pressure in the container body, the safety interlock locks the blind plate cover on the surface of the container body. When the internal pressure of the container body is released, the safety interlock is opened, enabling the blind plate cover to be removed from the surface of the container body, ensuring the safety of the staff, enhancing the safety performance of this pressure vessel equipment, and realizing the opening and closing of the safety interlock through the internal air pressure, reducing the labor intensity of the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of safety locks, and more specifically, to a safety interlock device for a quick-opening pressure vessel. Background Art

[0002] The safety lock of a pressure vessel is a key safety device used to ensure the safety and reliability of the pressure vessel during use. The safety interlock device can be divided into three types: mechanical, electric, and combined. The safety lock ensures the normal operation of the pressure vessel.

[0003] Chinese Patent Application No. CN201811006256.8 discloses an automatic control door system, a door control method, and a sterilizer, belonging to the technical field of pressure vessels. The automatic control door system includes a door locking device for driving a rotating device installed on the pressure vessel cylinder to rotate, and turning the locking tongue provided on the rotating device into or out of the card slot on the pressure vessel cover to lock or unlock the pressure vessel cover; a safety lock device connected to the door locking device for controlling the rotation of the rotating device. After the pressure vessel is locked, the safety lock device performs a safety action to limit the rotation of the rotating device. Before the pressure vessel is unlocked, the safety lock device releases the safety action to release the rotation limit of the rotating device; and a door opening and closing device respectively connected to the pressure vessel cylinder and the pressure vessel cover for controlling the pressure vessel cover to rotate upward to open or downward to close.

[0004] In the above technical solution, by installing a safety lock on the pressure vessel, the airtightness of the door is ensured, and thus the high safety of the pressure vessel during use is ensured. However, some traditional safety locks use a combination of sensors and mechanical locks to lock the pressure vessel. However, the pressure sensor is an electronic device and is easily damaged by environmental factors, resulting in inaccurate air pressure detection. At this time, if a person opens the safety lock, it will cause harm to the staff, and manually adjusting the safety lock also increases the labor intensity of the operator. Summary of the Invention

[0005] The purpose of the present invention is to provide a safety interlock device for a quick-opening pressure vessel to solve the problems raised in the above background art:

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A safety interlock device for a quick-opening pressure vessel, comprising a base and a container body fixedly installed above it. A plurality of side wing plates are fixedly installed on the top surface of the container body. A detachable blind plate cover is provided on the top end surface of the container body. A fixing plate with the same number as the side wing plates is fixedly installed on the side surface of the blind plate cover. A through-type first lock hole and a second lock hole are respectively formed inside the fixing plate and the side wing plate. A through-type pressure relief valve is fixedly installed on the surface of the blind plate cover. A sliding column that can slide vertically up and down is arranged inside the pressure relief valve. A plurality of fixing rods are fixedly installed on the surface of the sliding column. One end surface of any one of the fixing rods is rotatably connected to a rotating rod. A pulley device is arranged on one end surface of the rotating rod. A plurality of through-type sliding rods are slidably connected to the surface of the container body. An inclined seat is fixedly installed on one end surface of the sliding rod. A trapezoidal block is fixedly installed on the other end surface of the sliding rod. An arc track is fixedly installed on the bottom surface of the trapezoidal block. A slot and a connecting slot are respectively formed on the surface of the arc track. The connecting slot communicates with the bottom of the arc track. A guide ring is fixedly installed below any one of the side wing plates. A lock rod for locking the first lock hole and the second lock hole is slidably connected inside the guide ring.

[0008] By adopting the above technical solution, after the clamping plate is aligned with the clamping slot, the blind plate cover is rotated clockwise. At this time, the clamping plate rotates and is initially fixed on the surface of the container body. The fixing plate and the side wing plate are in corresponding positions, and the first lock hole and the second lock hole are vertically corresponding. When the pressure inside the container body increases, the floating ball moves upward, driving the sliding column to move upward and compress the third spring. At this time, the fixing rod, the rotating rod, and the pulley device move upward following the sliding column. When the pulley device moves upward and passes through the connecting slot to squeeze the inclined surface of the trapezoidal block, at this time, the trapezoidal block moves, driving the sliding rod and the inclined seat to move and compress the second spring. The lock rod is squeezed upward by the inclined seat to lock the first lock hole and the second lock hole. Compared with the traditional safety lock, this safety interlock is interrelated with the pressure relief valve. When there is pressure inside the container body, this safety interlock locks the blind plate cover on the surface of the container body. When the pressure inside the container body is released, this safety interlock is opened, and the blind plate cover can be removed from the surface of the container body, ensuring the safety of the staff. At the same time, the safety performance of this pressure vessel equipment is improved. The opening and closing of the safety interlock are realized through the internal air pressure, reducing the labor intensity of the operator.

[0009] Preferably, the number of the side wing plates, the fixing plates, the fixing rods, the rotating rods, the pulley devices, and the arc tracks is the same. When the blind plate cover is installed on the container body, the pulley device is lowered into the arc track through the slot. After the blind plate cover is installed on the top end of the container body, the first lock hole and the second lock hole are vertically corresponding.

[0010] By adopting the above technical solution, the setting of the slot prevents the pulley device from being blocked when it is lowered into the arc track.

[0011] Preferably, gears are fixedly installed on the surfaces of any of the rotating rods, and arc-shaped toothed plates meshing with the gears are fixedly installed on the bottom surfaces of any of the arc-shaped tracks. The pulley device is in contact with the inner wall of the arc-shaped track, and the pulley device is rotationally connected to the fixed rod through the rotating rod.

[0012] By adopting the above technical solution, the gears and the arc-shaped toothed plates are designed to match each other. During the meshing process of the gears and the arc-shaped toothed plates, only the pulley device is allowed to rotate by 90 degrees.

[0013] Preferably, a fixing frame is arranged between the side wing plates and the guide ring. The guide ring is fixedly connected to the bottom surface of the side wing plate through the fixing frame. A ball head is arranged on the bottom surface of the locking rod, and the ball head is in contact with the surface of the inclined seat. A first spring for resetting the locking rod is sleeved on the surface of the locking rod.

[0014] By adopting the above technical solution, under the action of the self-elastic force of the first spring, the locking rod is disengaged from the first locking hole and the second locking hole, thereby realizing the opening of the safety interlock.

[0015] Preferably, one end of the first spring is fixedly connected to the bottom surface of the guide ring, and the other end of the first spring is fixedly connected to the surface of the ball head. The ball head is elastically connected to the guide ring through the first spring.

[0016] By adopting the above technical solution, the first spring is used for the reset movement of the locking rod.

[0017] Preferably, a second spring is sleeved on the surface of any of the sliding rods. One end of the second spring is fixedly connected to the surface of the trapezoidal block, and the other end of the second spring is fixedly connected to the inner wall of the container body. The trapezoidal block is elastically connected to the container body through the second spring.

[0018] By adopting the above technical solution, the second spring is used for the movement reset of the trapezoidal block.

[0019] Preferably, a floating ball is fixedly installed on the bottom surface of the sliding column. When the air pressure inside the container body increases, the floating ball moves upward and drives the sliding column to slide upward.

[0020] Preferably, a plurality of clamping plates for clamping the container body are fixedly installed on the bottom surface of the blind plate cover. A plurality of card slots equal in number to the clamping plates are formed on the top surface of the container body. A limiting block for limiting the clamping plates is arranged on one side of any of the side wing plates. Handles are fixedly installed on the surfaces of two of the fixing plates.

[0021] By adopting the above technical solution, the limiting block is used for limiting the clamping plates. When the clamping plates are limited, the first locking hole and the second locking hole are vertically corresponding.

[0022] Preferably, an expansion chamber is provided inside the pressure relief valve. A first seal and a second seal for sealing the inner wall of the pressure relief valve are fixedly installed corresponding to the surface of the sliding column. A third spring is elastically connected between the sliding column and the pressure relief valve. One end of the third spring is fixedly connected to the inner wall of the pressure relief valve, and the other end of the third spring is fixedly connected to the top end of the sliding column. A plurality of exhaust holes communicating with the expansion chamber are formed on the surface of the pressure relief valve.

[0023] By adopting the above technical solution, when the pressure inside the container body increases, the floating ball moves upward, driving the sliding column to move upward and compress the third spring. The upward movement of the sliding column drives the first seal and the second seal to move out of alignment with the inner wall of the pressure relief valve, realizing the communication between the container body, the expansion chamber and the exhaust holes. At this time, the high-pressure air pressure is discharged through the expansion chamber and the exhaust holes, reducing the pressure inside the container body, ensuring the release of the pressure inside the container body, and preventing damage to the container body caused by excessive pressure.

[0024] Preferably, an arc-shaped groove is formed on the surface of any one of the side wing plates, and an arc-shaped block matching the arc-shaped groove is fixedly installed on the bottom surface of any one of the fixing plates. When the arc-shaped block is inserted into the arc-shaped groove in a matching manner, the positions of the first lock hole and the second lock hole are corresponding up and down.

[0025] By adopting the above technical solution, when the blind plate cover is rotated clockwise, at this time, the arc-shaped block moves into the arc-shaped groove. Through the insertion and matching of the arc-shaped block and the arc-shaped groove, and in addition, the pulley device rolls along the inner wall of the arc-shaped track, it is convenient for the clamping plate to rotate and be initially fixed on the surface of the container body, making it more convenient and fast to initially fix the blind plate cover on the surface of the container body.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1) When the quick-opening pressure vessel safety interlock device of the present invention is in use, compared with the traditional safety lock, the safety interlock and the pressure relief valve are interrelated. When there is pressure in the container body, the safety interlock locks the blind plate cover on the surface of the container body. When the pressure inside the container body is released, the safety interlock is opened, realizing the removal of the blind plate cover from the surface of the container body, ensuring the safety of the staff, and at the same time increasing the safety performance of the pressure vessel equipment. The opening and closing of the safety interlock are realized through the internal air pressure, reducing the labor intensity of the operator.

[0028] 2) When the safety interlock device for this quick-opening pressure vessel is in use, when the pressure inside the container body increases, the floating ball moves upward, driving the sliding column to move upward and compress the third spring. The upward movement of the sliding column drives the first seal and the second seal to move out of alignment with the inner wall of the pressure relief valve, enabling the container body, the expansion chamber, and the exhaust hole to communicate. At this time, the high-pressure air is discharged through the expansion chamber and the exhaust hole, reducing the pressure inside the container body, ensuring the release of the pressure inside the container body, and preventing damage to the container body caused by excessive pressure.

[0029] 3) When the safety interlock device for this quick-opening pressure vessel is in use, rotate the blind plate cover clockwise. At this time, the arc-shaped block moves and inserts into the arc-shaped groove. Through the insertion and matching of the arc-shaped block and the arc-shaped groove, and in addition, the pulley device rolls along the inner wall of the arc-shaped track, facilitating the rotation of the clamping plate to be initially fixed on the surface of the container body, making it more convenient and fast to initially fix the blind plate cover on the surface of the container body. Brief Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is the internal structural schematic diagram of the container body of the present invention;

[0032] Figure 3 is the structural schematic diagram of the positions of the sliding column and the floating ball of the present invention;

[0033] Figure 4 is the structural schematic diagram of the positions of the arc-shaped track, the arc-shaped toothed plate, and the guide ring of the present invention;

[0034] Figure 5 is the structural schematic diagram of the positions of the trapezoidal block and the arc-shaped track of the present invention;

[0035] Figure 6 is the structural schematic diagram of the positions of the arc-shaped track and the arc-shaped toothed plate of the present invention;

[0036] Figure 7 is the structural schematic diagram of the position of the side wing plate of the present invention;

[0037] Figure 8 of the present invention Figure 7 partial enlarged view of part A;

[0038] Figure 9 is the structural schematic diagram of the positions of the arc-shaped block and the second locking hole of the present invention;

[0039] Figure 10 is the internal structural schematic diagram of the pressure relief valve of the present invention.

[0040] Description of reference numerals in the figure: 1. Base; 2. Container body; 3. Flanking plate; 4. Blind plate cover; 5. Fixed plate; 6. First lock hole; 7. Pressure relief valve; 8. Sliding column; 9. Fixed rod; 10. Rotating rod; 11. Pulley device; 12. Gear; 13. Slide bar; 14. Oblique seat; 15. Trapezoidal block; 16. Arc track; 17. Arc-shaped toothed plate; 18. Guide ring; 19. Lock rod; 20. Groove; 21. Connecting groove; 22. First spring; 23. Fixed bracket; 24. Ball head; 25. Second spring; 26. Suspension ball; 27. Clamping plate; 28. Card slot; 29. Limit block; 30. Arc groove; 31. Arc-shaped block; 32. Second lock hole; 33. First seal; 34. Second seal; 35. Third spring; 36. Exhaust hole; 37. Handle; 38. Expansion cavity. Detailed implementation manner

[0041] Example 1: Please refer to Figure 1 - Figure 10, A safety interlock device for a quick-opening pressure vessel, including a base 1 and a container body 2 fixedly installed above it. The container body 2 is a conventional pressure vessel device in the prior art. A number of side wing plates 3 are fixedly installed on the top surface of the container body 2. The side wing plates 3 are conventional side wing plates 3 in the prior art. A first lock hole 6 for locking the blind plate cover 4 is provided on the side wing plate 3. A detachable blind plate cover 4 is provided on the top end surface of the container body 2. The blind plate cover 4 is used to seal the container body 2. Fixed plates 5 with the same number as the side wing plates 3 are fixedly installed on the side surface of the blind plate cover 4. Through-type first lock holes 6 and second lock holes 32 are respectively formed inside the fixed plates 5 and the side wing plates 3. The first lock hole 6 and the second lock hole 32 are combined with a lock rod 19 to form a safety interlock, locking the blind plate cover 4 on the container body 2. A through-type pressure relief valve 7 is fixedly installed on the surface of the blind plate cover 4. The pressure relief valve 7 is a device for releasing pressure in the prior art. The pressure relief valve 7 is fixedly installed in the middle of the blind plate cover 4, and the pressure relief valve 7 and the center point of the container body 2 are on the same vertical line. A sliding column 8 that can slide vertically up and down is provided inside the pressure relief valve 7. A number of fixed rods 9 are fixedly installed on the surface of the sliding column 8. One end surface of any one of the fixed rods 9 is rotatably connected to a rotating rod 10. A pulley device 11 is provided on one end surface of the rotating rod 10. The pulley device 11 is a conventional pulley device in the prior art. The pulley device 11 rolls on the inner wall of the arc track 16, facilitating the rotary installation of the blind plate cover 4. When the pulley device 11 rolls on the surface of the trapezoidal block 15, it facilitates the movement of the lock rod 19 to lock the first lock hole 6 and the second lock hole 32. A number of through-type sliding rods 13 are slidably connected to the surface of the container body 2. The sliding rods 13 are used to guide the movement of the trapezoidal block 15. An inclined seat 14 is fixedly installed on one end surface of the sliding rod 13. A trapezoidal block 15 is fixedly installed on the other end surface of the sliding rod 13. An arc track 16 is fixedly installed on the bottom surface of the trapezoidal block 15. The arc track 16 is set according to the concentric circle of the container body 2. Slots 20 and connecting slots 21 are respectively formed on the surface of the arc track 16. The trapezoidal block 15 is divided into an inclined surface and a vertical plane. The connecting slot 21 is connected to the inclined surface, ensuring that the pulley device 11 smoothly and steadily moves onto the inclined surface of the trapezoidal block 15. The connecting slot 21 communicates with the bottom of the arc track 16. A guide ring 18 is fixedly installed below any one of the side wing plates 3. A lock rod 19 for locking the first lock hole 6 and the second lock hole 32 is slidably connected inside the guide ring 18. After aligning the clamping plate 27 with the clamping slot 28, the blind plate cover 4 is rotated clockwise. At this time, the clamping plate 27 rotates and is initially fixed on the surface of the container body 2. The fixed plate 5 and the side wing plate 3 are in corresponding positions, and the first lock hole 6 and the second lock hole 32 are in corresponding positions up and down. When the pressure inside the container body 2 increases, the floating ball 26 moves upward, driving the sliding column 8 to move upward and compress the third spring 35. At this time, the fixed rods 9, the rotating rod 10, and the pulley device 11 move upward following the sliding column 8. When the pulley device 11 moves upward and passes through the connecting slot 21 and presses the inclined surface of the trapezoidal block 15, at this time, the trapezoidal block 15 moves, driving the sliding rod 13 and the inclined seat 14 to move and compress the second spring 25,The locking rod 19 moves upward under the extrusion of the inclined seat 14 to lock the first lock hole 6 and the second lock hole 32. Compared with traditional safety locks, this safety interlock is interrelated with the pressure relief valve 7. When there is pressure in the container body 2, this safety interlock locks the blind flange cover 4 on the surface of the container body 2. When the internal pressure of the container body 2 is released, this safety interlock is opened to remove the blind flange cover 4 from the surface of the container body 2, ensuring the safety of the staff and improving the safety performance of this pressure vessel equipment. The opening and closing of the safety interlock are realized through the internal air pressure, reducing the labor intensity of the operator.

[0042] The number of the side wing plates 3, the fixing plates 5, the fixing rods 9, the rotating rods 10, the pulley devices 11 and the arc tracks 16 is the same. The multiple designs of the side wing plates 3 and the fixing plates 5 increase the stability and safety of installing the blind flange cover 4 onto the container body 2. When the blind flange cover 4 is installed onto the container body 2, the pulley devices 11 are lowered into the arc tracks 16 through the slots 20. After the blind flange cover 4 is installed at the top of the container body 2, the positions of the first lock hole 6 and the second lock hole 32 correspond up and down. The setting of the slots 20 prevents the pulley devices 11 from being blocked when lowered into the arc tracks 16.

[0043] A gear 12 is fixedly installed on the surface of any one of the rotating rods 10, and an arc-shaped tooth plate 17 meshing with the gear 12 is fixedly installed on the bottom surface of any one of the arc tracks 16. The pulley device 11 contacts the inner wall of the arc track 16. The design space of the arc track 16 is large enough not to block the rotation of the pulley device 11 by 90 degrees. The pulley device 11 is rotationally connected to the fixing rod 9 through the rotating rod 10. The gear 12 and the arc-shaped tooth plate 17 are designed to match each other. During the meshing process of the gear 12 and the arc-shaped tooth plate 17, only the pulley device 11 is allowed to rotate by 90 degrees.

[0044] A fixing frame 23 is arranged between the side wing plate 3 and the guide ring 18. The guide ring 18 is fixedly connected to the bottom surface of the side wing plate 3 through the fixing frame 23. A ball head 24 is arranged on the bottom surface of the locking rod 19, and the ball head 24 contacts the surface of the inclined seat 14. A first spring 22 for its reset is sleeved on the surface of the locking rod 19. Under the action of the self-elastic force of the first spring 22, the locking rod 19 is disengaged from the first lock hole 6 and the second lock hole 32, thereby realizing the opening of the safety interlock.

[0045] One end of the first spring 22 is fixedly connected to the bottom surface of the guide ring 18, and the other end of the first spring 22 is fixedly connected to the surface of the ball head 24. The ball head 24 is elastically connected to the guide ring 18 through the first spring 22. The first spring 22 is used for the reset of the locking rod 19.

[0046] A second spring 25 is sleeved on the surface of any one of the sliding rods 13. One end of the second spring 25 is fixedly connected to the surface of the trapezoidal block 15, and the other end of the second spring 25 is fixedly connected to the inner wall of the container body 2. The trapezoidal block 15 is elastically connected to the container body 2 through the second spring 25, and the second spring 25 is used for the movement reset of the trapezoidal block 15.

[0047] A suspension ball 26 is fixedly installed on the bottom surface of the sliding column 8. The suspension ball 26 is a conventional suspension ball 26 in the prior art. When the pressure inside the container body 2 increases, the suspension ball 26 moves upward, driving the sliding column 8 to move upward and compress the third spring 35. At this time, the fixed rod 9, the rotating rod 10, and the pulley device 11 move upward following the sliding column 8.

[0048] A plurality of clamping plates 27 for clamping the container body 2 are fixedly installed on the bottom surface of the blind plate cover 4. The top surface of the container body 2 is provided with a plurality of clamping grooves 28 having the same number as the clamping plates 27. A boundary plate is provided on the top surface of the container body 2 for locking the clamping plates 27. A limiting block 29 for limiting the clamping plates 27 is provided on one side of any one of the wing plates 3. Handles 37 are fixedly installed on the surfaces of two fixing plates 5. The limiting block 29 is used for limiting the clamping plates 27. When the clamping plates 27 are limited, the positions of the first lock hole 6 and the second lock hole 32 are vertically corresponding.

[0049] An expansion cavity 38 is provided inside the pressure relief valve 7. A first seal 33 and a second seal 34 for sealing the inner wall of the pressure relief valve 7 are fixedly installed corresponding to the surface of the sliding column 8. A third spring 35 is elastically connected between the sliding column 8 and the pressure relief valve 7. One end of the third spring 35 is fixedly connected to the inner wall of the pressure relief valve 7, and the other end of the third spring 35 is fixedly connected to the top end of the sliding column 8. A plurality of exhaust holes 36 communicating with the expansion cavity 38 are provided on the surface of the pressure relief valve 7.

[0050] When the pressure inside the container body 2 increases, the suspension ball 26 moves upward, driving the sliding column 8 to move upward and compress the third spring 35. The upward movement of the sliding column 8 drives the first seal 33 and the second seal 34 to move out of alignment with the inner wall of the pressure relief valve 7, realizing the communication between the container body 2, the expansion cavity 38, and the exhaust holes 36. At this time, the high-pressure air is discharged through the expansion cavity 38 and the exhaust holes 36, reducing the pressure inside the container body 2, ensuring the release of the pressure inside the container body 2, preventing damage to the container body 2 due to excessive pressure, and at the same time ensuring that personnel will not be injured when opening the blind plate cover 4.

[0051] Usage steps of the present invention: When the quick-opening pressure vessel safety interlock device is in use, manually lift the handle 37, align the clamping plate 27 with the clamping groove 28, and lower the blind plate cover 4. At this time, the pressure relief valve 7, the sliding column 8, the floating ball 26, the fixed rod 9, the rotating rod 10, and the pulley device 11 are lowered into the container body 2. During the lowering process of the pulley device 11, the pulley device 11 is lowered into the arc track 16 through the slot 20, and the pulley device 11 contacts the inner wall of the arc track 16. Rotate the blind plate cover 4 clockwise. At this time, the clamping plate 27 rotates and is fixed on the surface of the container body 2. During the rotation of the blind plate cover 4, when the clamping plate 27 is limited by the limiting block 29, at this time, the fixing plate 5 matches the side wing plate 3, and the positions of the first lock hole 6 and the second lock hole 32 are corresponding up and down. During the rotation of the blind plate cover 4, it drives the pressure relief valve 7, the sliding column 8, the floating ball 26, the fixed rod 9, the rotating rod 10, and the pulley device 11 to rotate. When the pulley device 11 rotates along the inner wall of the arc track 16, when the gear 12 meshes with the arc-shaped tooth plate 17, as the pulley device 11 continues to rotate along the inner wall of the arc track 16, at this time, the rotating rod 10 drives the pulley device 11 to rotate (note that during the meshing process of the gear 12 and the arc-shaped tooth plate 17, only the pulley device 11 is allowed to rotate 90 degrees). At this time, the pulley device 11 is parallel to the connecting groove 21. When the pressure inside the container body 2 increases, the floating ball 26 moves upward, driving the sliding column 8 to move upward and squeeze the third spring 35. At this time, the fixed rod 9, the rotating rod 10, and the pulley device 11 move upward following the sliding column 8. When the pulley device 11 moves upward and passes through the connecting groove 21 to squeeze the inclined surface of the trapezoidal block 15, at this time, the trapezoidal block 15 moves, driving the sliding rod 13 and the inclined seat 14 to move and squeeze the second spring 25. The inclined seat 14 moves to squeeze the ball head 24, causing the locking rod 19 to move upward to lock the first lock hole 6 and the second lock hole 32. When the air pressure inside the container body 2 is discharged through the pressure relief valve 7, at this time, the sliding column 8 resets under the action of the third spring 35, and the fixed rod 9, the rotating rod 10, and the pulley device 11 rotate and follow the sliding column 8 to reset. At this time, the locking rod 19 resets under the action of the first spring 22. At this time, the first lock hole 6 and the second lock hole 32 are opened. Then rotate the blind plate cover 4 counterclockwise, and the pulley device 11 and the rotating rod 10 reset under the matching of the gear 12 and the arc-shaped tooth plate 17, causing the pulley device 11 to roll along the inner wall of the arc track 16. When the clamping plate 27 aligns with the clamping groove 28, lift the blind plate cover 4 upward. At this time, the pulley device 11 is lifted through the slot 20, thereby separating the blind plate cover 4 from the container body 2. This solution, after the clamping plate 27 aligns with the clamping groove 28, rotates the blind plate cover 4 clockwise. At this time, the clamping plate 27 rotates and is initially fixed on the surface of the container body 2. The positions of the fixing plate 5 and the side wing plate 3 correspond, and the positions of the first lock hole 6 and the second lock hole 32 are corresponding up and down. When the pressure inside the container body 2 increases, the floating ball 26 moves upward, driving the sliding column 8 to move upward and squeeze the third spring 35. At this time, the fixed rod 9, the rotating rod 10, and the pulley device 11 move upward following the sliding column 8.When the pulley device 11 moves upward and passes through the connecting groove 21 to squeeze the inclined surface of the trapezoidal block 15, at this time, the trapezoidal block 15 moves to drive the slide bar 13 and the inclined seat 14 to move and squeeze the second spring 25. The locking rod 19 is squeezed by the inclined seat 14 and moves upward to lock the first lock hole 6 and the second lock hole 32. When the air pressure inside the container body 2 is discharged through the pressure relief valve 7, at this time, the sliding column 8 is reset under the action of the third spring 35, and the fixing rod 9, the rotating rod 10 and the pulley device 11 rotate and follow the sliding column 8 to reset. At this time, the locking rod 19 is reset under the action of the first spring 22, and at this time, the first lock hole 6 and the second lock hole 32 are opened. Then, the blind plate cover 4 is rotated counterclockwise to separate the blind plate cover 4 from the container body 2. Compared with the traditional safety lock, this safety interlock is interrelated with the pressure relief valve 7. When there is pressure in the container body 2, this safety interlock realizes locking the blind plate cover 4 on the surface of the container body 2. When the internal pressure of the container body 2 is released, this safety interlock is opened, realizing the removal of the blind plate cover 4 from the surface of the container body 2, ensuring the safety of the staff, and at the same time increasing the safety performance of this pressure vessel equipment. The opening and closing of the safety interlock are realized through the internal air pressure, reducing the labor intensity of the operator.

[0052] Embodiment 2: Please refer to Figure 1 - Figure 10 , the difference based on Embodiment 1 is that an arc groove 30 is provided on the surface of any one of the wing plates 3, and an arc block 31 matching the arc groove 30 is fixedly installed on the bottom surface of any one of the fixing plates 5. When the arc block 31 is inserted into the arc groove 30 in a matching manner, the positions of the first lock hole 6 and the second lock hole 32 are vertically corresponding. When the blind plate cover 4 is rotated clockwise, at this time, the arc block 31 moves into the arc groove 30. Through the insertion and matching of the arc block 31 and the arc groove 30, plus the pulley device 11 rolling along the inner wall of the arc track 16, it is convenient for the clamping plate 27 to rotate and be initially fixed on the surface of the container body 2, making it more convenient and fast to initially fix the blind plate cover 4 on the surface of the container body 2.

[0053] The using steps of the present invention: When this quick-opening pressure vessel safety interlock device is in use, the blind plate cover 4 is rotated clockwise. At this time, the arc block 31 moves into the arc groove 30. Through the insertion and matching of the arc block 31 and the arc groove 30, plus the pulley device 11 rolling along the inner wall of the arc track 16, it is convenient for the clamping plate 27 to rotate and be initially fixed on the surface of the container body 2, making it more convenient and fast to initially fix the blind plate cover 4 on the surface of the container body 2. And when the arc block 31 is inserted into the arc groove 30 in a matching manner, the positions of the first lock hole 6 and the second lock hole 32 are vertically corresponding.

[0054] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention, which are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A safety interlock device for a quick-opening pressure vessel, comprising a base (1) and a container body (2) fixedly mounted thereon, characterized in that: A plurality of side wing plates (3) are fixedly mounted on the top surface of the container body (2); a detachable blind plate cover (4) is provided on the top surface of the container body (2); a fixing plate (5) having the same number as the side wing plates (3) is fixedly mounted on the side surface of the blind plate cover (4); a through-type first lock hole (6) and a second lock hole (32) are respectively provided inside the side wing plates (3) and the fixing plate (5); a through-type pressure relief valve (7) is fixedly mounted on the surface of the blind plate cover (4); a sliding column (8) capable of vertically sliding up and down is provided inside the pressure relief valve (7); a plurality of fixing rods (9) are fixedly mounted on the surface of the sliding column (8); a rotating rod (10) is rotatably connected to the surface of one end of any one of the fixing rods (9); the rotating rod (10) is rotatably connected to the surface of the fixing rod (9); and the rotating rod (10) is rotatably connected to the surface of the fixing rod (9). ) is provided with a pulley device (11), a plurality of through-type slide rods (13) are slidably connected to the surface of the container body (2), an inclined seat (14) is fixedly installed on one end surface of the slide rod (13), a trapezoidal block (15) is fixedly installed on the other end surface of the slide rod (13), an arc track (16) is fixedly installed on the bottom surface of the trapezoidal block (15), a groove (20) and a connecting groove (21) are respectively provided on the surface of the arc track (16), and the connecting groove (21) is connected to the bottom of the arc track (16), a guide ring (18) is fixedly installed below any one of the side wing plates (3), and a locking rod (19) for locking the first locking hole (6) and the second locking hole (32) is slidably connected inside the guide ring (18).

2. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: The side wing plates (3), the fixing plates (5), the fixing rods (9), the rotating rods (10), the pulley devices (11) and the arc track (16) are of the same number. When the blind plate cover (4) is mounted on the container body (2), the pulley device (11) is lowered into the arc track (16) through the slot (20). After the blind plate cover (4) is mounted on the top of the container body (2), the first locking hole (6) and the second locking hole (32) correspond in position up and down.

3. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A gear (12) is fixedly mounted on the surface of any one of the rotating rods (10), an arc-shaped toothed plate (17) meshing with the gear (12) is fixedly mounted on the bottom surface of any one of the arc-shaped tracks (16), the pulley device (11) is in contact with the inner wall of the arc-shaped track (16), and the pulley device (11) is rotatably connected to the fixed rod (9) via the rotating rod (10).

4. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A fixing frame (23) is provided between the side wing plate (3) and the guide ring (18); the guide ring (18) is fixedly connected to the bottom surface of the side wing plate (3) via the fixing frame (23); a ball head (24) is provided on the bottom surface of the locking rod (19); the ball head (24) contacts the surface of the inclined seat (14); and a first spring (22) for resetting the locking rod (19) is sleeved on the surface of the locking rod (19).

5. A safety interlock device for a quick-opening pressure vessel according to claim 4, characterized in that: One end of the first spring (22) is fixedly connected to the bottom surface of the guide ring (18), and the other end of the first spring (22) is fixedly connected to the surface of the ball head (24); the ball head (24) is elastically connected to the guide ring (18) via the first spring (22).

6. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A second spring (25) is sleeved on the surface of any one of the slide bars (13); one end of the second spring (25) is fixedly connected to the surface of the trapezoidal block (15); the other end of the second spring (25) is fixedly connected to the inner wall of the container body (2); and the trapezoidal block (15) is elastically connected to the container body (2) via the second spring (25).

7. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A suspension ball (26) is fixedly mounted on the bottom surface of the sliding column (8); when the air pressure inside the container body (2) increases, the suspension ball (26) moves upward and slides the sliding column (8) upward.

8. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A plurality of clamping plates (27) for clamping the container body (2) are fixedly mounted on the bottom surface of the blind plate cover (4); the top surface of the container body (2) is provided with clamping grooves (28) the same number as the clamping plates (27); a limiting block (29) for limiting the position of the clamping plates (27) is provided on one side of any of the side wing plates (3); and handles (37) are fixedly mounted on the surfaces of the two fixed plates (5).

9. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: An expansion chamber (38) is provided inside the pressure relief valve (7); a first seal (33) and a second seal (34) for sealing the inner wall of the pressure relief valve (7) are fixedly mounted on the surface of the sliding column (8); a third spring (35) is elastically connected between the sliding column (8) and the pressure relief valve (7); one end of the third spring (35) is fixedly connected to the inner wall of the pressure relief valve (7); the other end of the third spring (35) is fixedly connected to the top end of the sliding column (8); and a plurality of exhaust holes (36) communicating with the expansion chamber (38) are provided on the surface of the pressure relief valve (7).

10. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: The surface of any of the side wing plates (3) is provided with an arc-shaped groove (30), and the bottom surface of any of the fixed plates (5) is fixedly mounted with an arc-shaped block (31) matching the arc-shaped groove (30). When the arc-shaped block (31) is matched and plugged into the arc-shaped groove (30), the first locking hole (6) and the second locking hole (32) correspond in position up and down.

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