A TBD tank bottom valve

Abstract

The invention relates to the field of tank bottom valves, in particular to a TBD tank bottom valve, comprising a driving structure, a transmission structure, a backwashing structure, a TBD tank bottom valve body, a sealing structure, an opening and closing structure, a limiting structure and a linkage structure; the sealing structure is connected to the limiting structure, and when the sealing performance between the sealing structure and a reactor is poor or the sealing structure is damaged, the transmission structure is limited by the limiting structure, so that the driving structure and its transmission structure cannot work, so that the sealing performance between the sealing structure and the reactor can be judged by whether the driving structure can be driven, and the phenomenon of leakage caused by adding a reaction solution into the reactor is effectively avoided, so that the sealing performance between the TBD tank bottom valve body and the reactor is more convenient to control, and the linkage structure is driven by the transmission structure, so that the linkage structure drives the backwashing structure to control the opening and closing of the TBD tank bottom valve body, and the interior of the TBD tank bottom valve body is convenient to be backwashed, so that the cleaning of the TBD tank bottom valve body is more convenient and quick.

Description

Technical Field

[0001] The invention relates to the field of tank bottom valves, in particular to a TBD tank bottom valve. Background Art

[0002] Tank bottom valves are used for discharging materials from reaction vessels in clean industries such as pharmaceuticals, biology, fine chemicals, and food. The valve has the advantages of no dead angle, no residue, no leakage, and good sealing performance when discharging materials. When the valve is opened, the valve disc extends into the reactor or pipeline; the valve body has a large flow channel and good flow capacity; the valve core can break the condensate at the bottom of the reactor; the opening stroke is short and the overall length is short; the stroke is fixed, and the valve length will not change due to changes in the penetration length, especially when a single-acting pneumatic actuator is used, it will not be limited by the penetration length.

[0003] However, when the traditional TBD tank bottom valve is installed at the bottom end of the reactor body, it is not easy to control the resistance between the TBD tank bottom valve and the reactor body. When the resistance is too large, it is easy to cause the bolts to slip. When the TBD tank bottom valve and the reactor body are not sealed, continuing to use the TBD tank bottom valve may easily cause the reaction solution to leak. At the same time, the length of the guide block of the TBD tank bottom valve is fixed. When the guide block is worn, it cannot continue to resist and clean the port of the TBD tank bottom valve. At the same time, when the butterfly disc is damaged, the reactor cannot be sealed, which makes it difficult to control the discharge of the solution inside the reactor and to clean the inside of the TBD tank bottom valve. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a TBD tank bottom valve.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a TBD tank bottom valve, including a driving structure, a transmission structure, a backwashing structure, a TBD tank bottom valve body, a sealing structure, an opening and closing structure, a limiting structure and a linkage structure; the bottom end of the TBD tank bottom valve body is provided with the driving structure for driving, the driving structure is connected to the transmission structure, the transmission structure is connected to the opening and closing structure for sealing the TBD tank bottom valve body, and the opening and closing structure is rotatably connected with the TBD tank bottom valve body; the top of the TBD tank bottom valve body is provided with the sealing structure for connecting to the reactor; the limiting structure for limiting the transmission structure is arranged inside the driving structure, and the sealing structure is connected to the limiting structure; the backwashing structure for cavity sealing and backwashing is arranged inside the TBD tank bottom valve body, the backwashing structure is connected to the linkage structure inside the driving structure, and the transmission structure abuts against the linkage structure.

[0006] Specifically, the driving structure includes a rotating wheel, a driving rod, a storage sleeve, a supporting sleeve, a rack, a gear and a guide rail. The supporting sleeve is arranged at the bottom end of the TBD tank bottom valve body, the bottom end of the supporting sleeve is provided with the storing sleeve, the guide rail is fixed inside the storing sleeve, the guide rail is provided with the slidably connected rack, the driving rod is connected through the storing sleeve and the rack, the driving rod is rotatably connected to the storing sleeve, the driving rod is threadedly connected to the rack, the rotating wheel is provided at the end of the driving rod away from the rack, the rack is meshed with the gear, and the thickness of the gear is greater than the thickness of the rack.

[0007] Specifically, the transmission structure includes a transmission rod, an indicator block and a transmission ring. The transmission rod passes through the storage sleeve and the support sleeve. The transmission rod and the support sleeve are threadedly connected. The bottom end of the transmission rod is provided with the transmission ring in the form of a circular ring. The gear is fixed to the end of the transmission rod. The end of the transmission rod is away from the storage sleeve is provided with the indicator block slidably connected to the support sleeve. The transmission rod and the indicator block are rotationally connected, and a plurality of through holes are provided in a circular array on the transmission ring.

[0008] Specifically, the opening and closing structure includes a disc, a valve stem, a guide piece, a sealing ring, a scraper and a first return spring. One end of the valve stem is fixed to the transmission rod. The valve stem is rotatably and slidably connected to the TBD tank bottom valve body. The guide piece and the disc are provided at one end of the valve stem away from the transmission rod. The guide piece abuts against the disc. The disc has a truncated cone structure. The disc is provided with a circular sealing ring that abuts against the TBD tank bottom valve body. The scraper is slidably connected inside the guide piece. The end of the scraper away from the guide piece is trapezoidal. The first return spring is provided between the guide piece and the scraper.

[0009] Specifically, the sealing structure includes a sealing ring, a receiving groove and a second air pipe. The top end of the TBD tank bottom valve body is provided with a sealing ring with an arc-shaped cross-section at the end. The sealing ring is sleeved with the TBD tank bottom valve body. The interior of the sealing ring is provided with an annular receiving groove. One end of the second air pipe passes through the TBD tank bottom valve body and is connected to the receiving groove inside the sealing ring.

[0010] Specifically, the limiting structure includes a second return spring, a sleeve, a slider, a third return spring and a block. The sleeve is fixed to the interior of the storage sleeve. The interior of the sleeve is provided with a slider with an L-shaped cross-section and a sliding connection. The second return spring is provided between the slider and the sleeve. The other end of the second air pipe is connected to the space enclosed by the slider and the sleeve. The slider is connected to the block. The third return spring is provided between the block and the slider. The transmission ring is provided at the top of the block.

[0011] Specifically, the linkage structure includes a boost block, a boost sleeve and a fourth return spring. The boost sleeve of the semi-annular structure is fixed to the storage sleeve, the center of the gear and the center of the boost sleeve are at the same position, the semi-annular boost block and the boost sleeve are slidingly connected, the fourth return spring is arranged between the boost block and the boost sleeve, and the transmission ring is in contact with the boost block.

[0012] Specifically, the backwashing structure includes a water pipe, a sealing plug, a through hole, a sliding sleeve, a boosting plug and a first air pipe. The sealing plug is slidably connected to the TBD tank bottom valve body, the sliding sleeve is provided at the end of the sealing plug, the boosting plug is slidably connected to the sliding sleeve, one end of the first air pipe is fixed to the boosting plug and communicates with the accommodating cavity between the boosting plug and the sliding sleeve, the other end of the first air pipe is communicated with the accommodating cavity between the boosting block and the boosting sleeve, an accommodating cavity is provided inside the end of the sealing plug away from the sliding sleeve, the sealing plug is provided with two through holes, and the water pipe is fixed to the sealing plug and communicates with the through holes.

[0013] Beneficial effects of the present invention: In the TBD tank bottom valve described in the present invention, a driving structure for driving is provided at the bottom end of the TBD tank bottom valve body, the driving structure is connected to the transmission structure, the transmission structure is connected to the opening and closing structure for sealing the TBD tank bottom valve body, and the opening and closing structure is rotatably connected to the TBD tank bottom valve body, so that it is convenient to drive the transmission structure through the driving structure, so that the transmission structure drives the opening and closing structure to rotate and rise inside the TBD tank bottom valve body to control the opening and closing of the TBD tank bottom valve body. The setting of the driving structure makes the operation more labor-saving, and it has an automatic limit function, which makes the discharge speed of the TBD tank bottom valve body more convenient The opening and closing structure can be used to clean the end of the TBD tank bottom valve body, effectively preventing the reaction materials from adhering to the inside of the TBD tank bottom valve body, thereby greatly improving the sealing between the opening and closing structure and the TBD tank bottom valve body, that is, when the TBD tank bottom valve body needs to be opened and closed, the rotation direction of the rotary wheel is controlled, and the rotation of the rotary wheel drives the driving rod to rotate, and the driving rod rotates the thread to drive the rack to slide inside the guide rail, and the driving rod thread drives the rack to slide. The principle of the screw slider is adopted, and thus it has an automatic limit function, which makes the speed of controlling the discharge of the TBD tank bottom valve body more accurate and stable, and at the same time, the use of the rotary wheel makes the operation more convenient. It is more labor-saving. When the rack drives the gear to rotate, the gear drives the threaded connection between the transmission rod and the support sleeve, so that the transmission rod drives the lifting and lowering of the valve stem spiral. The lifting and lowering of the valve stem spiral drives the distance between the truncated cone-shaped disc and the TBD tank bottom valve body to change. At the same time, the gear slides between the rack and the transmission rod and the support sleeve are threadedly connected, driving the indicator block on the transmission rod to slide between the support sleeve, so that it is convenient to intuitively judge the size of the flow inside the TBD tank bottom valve body according to the position of the indicator block from the bottom end of the support sleeve, thereby making the flow adjustment more convenient and quick. The setting of the guide piece makes it easier to support the disc, so that the disc is more stressed. The guide piece rotates while driving the scraper with a trapezoidal structure at the end to slide between the TBD tank bottom valve body, taking out the solution bonded to the TBD tank bottom valve body, avoiding the solution from bonding to the TBD tank bottom valve body, making the sealing between the disc and the TBD tank bottom valve body better, and at the same time, the end of the scraper is trapezoidal and has a guiding function, which is convenient for sliding at different parts of the inside of the TBD tank bottom valve body. A first return spring is provided between the scraper and the guide piece, so that after the end of the scraper is worn, the first return spring contacts the scraper, so that the scraper always contacts the TBD tank bottom valve body, thereby making the cleaning effect of the TBD tank bottom valve body better.

[0014] The TBD tank bottom valve described in the present invention has a sealing structure for connecting to a reactor at the top of the TBD tank bottom valve body; a limiting structure for limiting the transmission structure is arranged inside the driving structure, and the sealing structure is connected to the limiting structure, so that when the sealing between the sealing structure and the reactor is poor or the sealing structure is damaged, the transmission structure is limited by the limiting structure, so that the driving structure and its transmission structure cannot work, so that it is convenient to judge the sealing between the sealing structure and the reactor by whether the driving structure can be driven, and effectively avoid the phenomenon of leakage caused by the reaction solution added to the inside of the reactor, so that the sealing between the TBD tank bottom valve body and the reactor is easier to control, that is, the TBD tank bottom valve body is connected to the reactor through bolts, so that the TBD tank bottom valve body cooperates with the reactor to extrude the sealing ring, and the top surface of the sealing ring is arc-shaped, so as to increase the contact area with the reactor, so that the reactor and the TBD The sealing performance between the tank bottom valve body is better, the sealing ring is squeezed and deformed, so that the space of the receiving groove is reduced, and the gas inside the receiving groove enters between the sleeve and the slider through the second air pipe, and then drives the slider and the sleeve to slide through the air pressure, so that the second return spring is extended, so that the block cannot contact the transmission ring when the transmission ring is at the bottom. When the sealing ring is damaged, or the resistance force of the TBD tank bottom valve body to the sealing ring is insufficient, the second return spring contracts and drives the slider to slide toward the second return spring, so that the block at the end of the slider is engaged with the transmission ring, so that the transmission ring cannot rotate, the transmission rod cannot rotate, and the gear and its rack cannot rotate, and the runner cannot be driven, so that it is easy to intuitively reflect whether the TBD tank bottom valve body and the reactor are sealed by whether the runner can be rotated, which effectively avoids the phenomenon of leakage caused by the reaction solution added to the inside of the reactor, and makes the sealing performance between the TBD tank bottom valve body and the reactor easier to control.

[0015] A TBD tank bottom valve described in the present invention has a backwashing structure for cavity sealing and backwashing inside the TBD tank bottom valve body, the backwashing structure is connected to the linkage structure inside the driving structure, and the transmission structure is in conflict with the linkage structure, so that it is convenient to drive the linkage structure through the transmission structure, so that the linkage structure drives the backwashing structure to control the opening and closing of the TBD tank bottom valve body, and at the same time, it is convenient to backwash the inside of the TBD tank bottom valve body, so that the cleaning of the TBD tank bottom valve body is more convenient and quick, that is: when the disc slides away from one end of the TBD tank bottom valve body, the resistance between the transmission ring and the boosting block is reduced, the fourth return spring is extended, and the fourth return spring drives the boosting block and the boosting sleeve to slide, so that the accommodating cavity between the boosting block and the boosting sleeve becomes larger, and the gas in the accommodating cavity between the sliding sleeve and the boosting plug enters the inside of the boosting sleeve through the first air pipe, and then the sliding sleeve and the boosting plug slide under the action of atmospheric pressure, so that the sealing plug and the TBD tank bottom valve body do not conflict and seal, and when the transmission ring slides toward the boosting block, the transmission The ring conflicts with the boost block, and the fourth return spring is compressed, so that the accommodating cavity between the boost block and the boost sleeve becomes smaller, so that the gas enters the accommodating cavity between the sliding sleeve and the boost plug through the first air pipe, and then the sliding sleeve and the boost plug slide under the action of air pressure, so that the sealing plug and the TBD tank bottom valve body are in conflict and sealed. The end of the sealing plug is provided with a accommodating cavity, so that the end of the sealing plug can be deformed, so that the sealing performance between the sealing plug and the TBD tank bottom valve body is better, and then the disc is cooperated to perform double-layer sealing on the TBD tank bottom valve body, so that the sealing plug can continue to be used after the disc is damaged. When the disc conflicts with the TBD tank bottom valve body, the sealing plug completely seals the TBD tank bottom valve body, and the water pipe for drainage and the water pipe for high-pressure flushing are opened. The high-pressure water flow flushes the inside of the TBD tank bottom valve body through one of the through holes, and then is discharged from the other through hole to the water pipe for drainage, so that it is convenient to clean the inside of the TBD tank bottom valve body after closing the TBD tank bottom valve body each time, thereby avoiding the adhesion of materials inside the TBD tank bottom valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A schematic diagram of the overall structure of a TBD tank bottom valve provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the connection structure between the transmission structure and the opening and closing structure shown; Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 4 for Figure 3 The structural schematic diagram of the opening and closing structure shown; Figure 5 for Figure 2 An enlarged schematic diagram of part B is shown; Figure 6 for Figure 5The schematic diagram of the connection structure between the backwash structure and the TBD tank bottom valve body is shown; Figure 7 for Figure 2 An enlarged schematic diagram of part C is shown; Figure 8 for Figure 7 The structural schematic diagram of the storage sleeve and the linkage structure shown; Fig. 9 for Figure 7 Schematic diagram of the connection structure between the transmission ring and the linkage structure shown.

[0018] In the figure: 1. driving structure, 11. rotating wheel, 12. driving rod, 13. receiving sleeve, 14. supporting sleeve, 15. rack, 16. gear, 17. guide rail, 2. transmission structure, 21. transmission rod, 22. indicating block, 23. transmission ring, 3. backwashing structure, 31. water pipe, 32. sealing plug, 33. through hole, 34. sliding sleeve, 35. boosting plug, 36. first air pipe, 4. TBD tank bottom valve body, 5. sealing structure , 51. sealing ring, 52. containing groove, 53. second air pipe, 6. opening and closing structure, 61. disc, 62. valve stem, 63. guide plate, 64. sealing ring, 65. scraper, 66. first return spring, 7. limiting structure, 71. second return spring, 72. sleeve, 73. slider, 74. third return spring, 75. block, 8. linkage structure, 81. boost block, 82. boost sleeve, 83. fourth return spring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] like Figure 1-Figure 9 As shown, a TBD tank bottom valve described in the present invention comprises a driving structure 1, a transmission structure 2, a backwashing structure 3, a TBD tank bottom valve body 4, a sealing structure 5, an opening and closing structure 6, a limiting structure 7 and a linkage structure 8; the bottom end of the TBD tank bottom valve body 4 is provided with the driving structure 1 for driving, the driving structure 1 is connected to the transmission structure 2, the transmission structure 2 is connected to the opening and closing structure 6 for sealing the TBD tank bottom valve body 4, and the opening and closing structure 6 is rotatably connected to the TBD tank bottom valve body 4; the top of the TBD tank bottom valve body 4 is provided with the sealing structure 5 for connecting to the reactor; the limiting structure 7 for limiting the transmission structure 2 is arranged inside the driving structure 1, and the sealing structure 5 is connected to the limiting structure 7; the backwashing structure 3 for cavity sealing and backwashing is arranged inside the TBD tank bottom valve body 4, the backwashing structure 3 is connected to the linkage structure 8 inside the driving structure 1, and the transmission structure 2 abuts against the linkage structure 8.

[0021] Specifically, the driving structure 1 includes a rotating wheel 11, a driving rod 12, a storage sleeve 13, a support sleeve 14, a rack 15, a gear 16 and a guide rail 17. The support sleeve 14 is arranged at the bottom end of the TBD tank bottom valve body 4, the bottom end of the support sleeve 14 is provided with the storage sleeve 13, the guide rail 17 is fixed inside the storage sleeve 13, the guide rail 17 is provided with the rack 15 which is slidably connected, the driving rod 12 is connected through the storage sleeve 13 and the rack 15, the driving rod 12 is rotationally connected to the storage sleeve 13, the driving rod 12 is threadedly connected to the rack 15, the end of the driving rod 12 away from the rack 15 is provided with the rotating wheel 11, the rack 15 is meshed with the gear 16, and the thickness of the gear 16 is greater than the thickness of the rack 15.

[0022] Specifically, the transmission structure 2 includes a transmission rod 21, an indicator block 22 and a transmission ring 23. The transmission rod 21 passes through the storage sleeve 13 and the support sleeve 14. The transmission rod 21 is threadedly connected to the support sleeve 14. The bottom end of the transmission rod 21 is provided with the transmission ring 23 in the form of a circular ring. The end of the transmission rod 21 is fixed with the gear 16. The end of the transmission rod 21 is away from the storage sleeve 13 and is provided with the indicator block 22 that is slidably connected to the support sleeve 14. The transmission rod 21 is rotationally connected to the indicator block 22, and a plurality of through holes are arranged in a circular array on the transmission ring 23.

[0023] Specifically, the opening and closing structure 6 includes a disc 61, a valve stem 62, a guide piece 63, a sealing ring 64, a scraper 65 and a first return spring 66, one end of the valve stem 62 is fixed to the transmission rod 21, the valve stem 62 is rotatably and slidably connected to the TBD tank bottom valve body 4, the end of the valve stem 62 away from the transmission rod 21 is provided with the guide piece 63 and the disc 61, the guide piece 63 abuts against the disc 61, the disc 61 is in a truncated cone structure, the disc 61 is provided with the annular sealing ring 64 abutting against the TBD tank bottom valve body 4, the guide piece 63 is provided inside the scraper 65 in a slidable connection, and the end of the scraper 65 away from the guide piece 63 is a stepped The first return spring 66 is arranged between the guide piece 63 and the scraper 65; the bottom end of the TBD tank bottom valve body 4 is provided with the driving structure 1 for driving, the driving structure 1 is connected to the transmission structure 2, the transmission structure 2 is connected to the opening and closing structure 6 for sealing the TBD tank bottom valve body 4, and the opening and closing structure 6 is rotatably connected with the TBD tank bottom valve body 4, so that it is convenient to drive the transmission structure 2 through the driving structure 1, so that the transmission structure 2 drives the opening and closing structure 6 to rotate and rise inside the TBD tank bottom valve body 4, and control the opening and closing of the TBD tank bottom valve body 4. The setting of the driving structure 1 makes the operation more labor-saving, and has an automatic limit The positioning function makes it easier to control the discharge speed of the TBD tank bottom valve body 4, and at the same time, it is easy to clean the end of the TBD tank bottom valve body 4 through the opening and closing structure 6, effectively preventing the reaction materials from adhering to the inside of the TBD tank bottom valve body 4, thereby greatly improving the sealing between the opening and closing structure 6 and the TBD tank bottom valve body 4, that is: when it is necessary to open and close the TBD tank bottom valve body 4, by controlling the rotation direction of the rotating wheel 11, the rotation of the rotating wheel 11 drives the driving rod 12 to rotate, and the driving rod 12 rotates the thread to drive the rack 15 to slide inside the guide rail 17, and the driving rod 12 thread drives the rack 15 to slide using the principle of a screw slider, thereby having an automatic The dynamic limit function makes the speed of controlling the discharge of the TBD tank bottom valve body 4 more accurate and stable, and at the same time, the use of the rotating wheel 11 makes the operation more labor-saving. When the rack 15 drives the gear 16 to rotate, the gear 16 drives the transmission rod 21 to be threadedly connected with the support sleeve 14, so that the transmission rod 21 drives the spiral lifting and lowering of the valve stem 62. The spiral lifting and lowering of the valve stem 62 drives the distance between the truncated cone-shaped disc 61 and the TBD tank bottom valve body 4 to change. At the same time, the gear 16 slides with the rack 15, and the transmission rod 21 is threadedly connected with the support sleeve 14, driving the indication block 22 on the transmission rod 21 to slide with the support sleeve 14.Therefore, it is convenient to intuitively judge the flow rate inside the TBD tank bottom valve body 4 according to the position of the indicator block 22 from the bottom end of the support sleeve 14, so that the flow rate adjustment is more convenient and quick. The setting of the guide piece 63 is convenient to support the disc 61, so that the force on the disc 61 is more uniform. When the guide piece 63 rotates, the scraper 65 with a trapezoidal structure at the end is driven to slide between the TBD tank bottom valve body 4 to take out the solution bonded to the TBD tank bottom valve body 4, thereby avoiding the solution from bonding to the TBD tank. On the bottom valve body 4, the sealing between the disc 61 and the TBD tank bottom valve body 4 is better. At the same time, the end of the scraper 65 is trapezoidal and has a guiding function, which is convenient for sliding at different parts inside the TBD tank bottom valve body 4. The first return spring 66 is provided between the scraper 65 and the guide piece 63, so that after the end of the scraper 65 is worn, the first return spring 66 contacts the scraper 65, so that the scraper 65 always contacts the TBD tank bottom valve body 4, thereby making the cleaning effect of the TBD tank bottom valve body 4 better.

[0024] Specifically, the sealing structure 5 includes a sealing ring 51, a receiving groove 52 and a second air pipe 53. The top end of the TBD tank bottom valve body 4 is provided with the sealing ring 51 whose end section is an arc. The sealing ring 51 is sleeved with the TBD tank bottom valve body 4. The inside of the sealing ring 51 is provided with an annular receiving groove 52. One end of the second air pipe 53 passes through the TBD tank bottom valve body 4 and is connected to the receiving groove 52 inside the sealing ring 51.

[0025] Specifically, the limiting structure 7 includes a second return spring 71, a sleeve 72, a slider 73, a third return spring 74 and a clamping block 75. The sleeve 72 is fixed inside the storage sleeve 13. The inside of the sleeve 72 is provided with the slider 73 with an L-shaped cross-section that is slidably connected. The second return spring 71 is provided between the slider 73 and the sleeve 72. The other end of the second air pipe 53 is connected to the space surrounded by the slider 73 and the sleeve 72. The slider 73 is connected to the clamping block 75. The third return spring 74 is provided between the clamping block 75 and the slider 73. The transmission ring 23 is provided at the top of the clamping block 75. The sealing structure 5 for connecting the reactor is provided at the top of the TBD tank bottom valve body 4.The limiting structure 7 for limiting the transmission structure 2 is arranged inside the driving structure 1, and the sealing structure 5 is connected to the limiting structure 7. When the sealing performance between the sealing structure 5 and the reactor is poor or the sealing structure 5 is damaged, the transmission structure 2 is limited by the limiting structure 7, so that the driving structure 1 and its transmission structure 2 cannot work, so that it is convenient to judge the sealing performance between the sealing structure 5 and the reactor by whether the driving structure 1 can be driven, and effectively avoid the reaction solution being added to the reactor. The phenomenon of internal leakage occurs, thereby making the sealing between the TBD tank bottom valve body 4 and the reactor easier to control, that is: the TBD tank bottom valve body 4 is connected to the reactor by bolts, so that the TBD tank bottom valve body 4 cooperates with the reactor to press the sealing ring 51, and the top surface of the sealing ring 51 is arc-shaped, thereby increasing the contact area with the reactor, so that the sealing between the reactor and the TBD tank bottom valve body 4 is better, the sealing ring 51 is squeezed and deformed, so that the space of the receiving groove 52 is reduced, and the receiving groove 52 The internal gas enters between the sleeve 72 and the slider 73 through the second gas pipe 53, and then drives the slider 73 to slide between the sleeve 72 through the gas pressure, so that the second return spring 71 is extended, so that when the transmission ring 23 is at the bottom, the block 75 cannot contact the transmission ring 23. When the sealing ring 51 is damaged, or the resistance force of the TBD tank bottom valve body 4 to the sealing ring 51 is insufficient, the second return spring 71 contracts and drives the slider 73 to slide toward the second return spring 71, so that the slider 7 The block 75 at the end of the 3 is engaged with the transmission ring 23, so that the transmission ring 23 cannot rotate, the transmission rod 21 cannot rotate, and the gear 16 and the rack 15 cannot rotate, so that the rotating wheel 11 cannot be driven, so that it is convenient to intuitively reflect whether the TBD tank bottom valve body 4 and the reactor are sealed by whether the rotating wheel 11 can be rotated, effectively avoiding the leakage caused by the reaction solution added to the inside of the reactor, so that the sealing between the TBD tank bottom valve body 4 and the reactor is easier to control. ;

[0026] Specifically, the linkage structure 8 includes a boost block 81, a boost sleeve 82 and a fourth return spring 83. The boost sleeve 82 with a semi-annular structure is fixed to the storage sleeve 13. The center of the gear 16 and the center of the boost sleeve 82 are at the same position. The semi-annular boost block 81 is slidingly connected to the boost sleeve 82. The fourth return spring 83 is arranged between the boost block 81 and the boost sleeve 82, and the transmission ring 23 is in contact with the boost block 81.

[0027] Specifically, the backwash structure 3 includes a water pipe 31, a sealing plug 32, a through hole 33, a sleeve 34, a boosting plug 35 and a first air pipe 36. The sealing plug 32 is slidably connected to the TBD tank bottom valve body 4. The end of the sealing plug 32 is provided with the sleeve 34. The boosting plug 35 is slidably connected to the sleeve 34. One end of the first air pipe 36 is fixed to the boosting plug 35 and communicates with the accommodating cavity between the boosting plug 35 and the sleeve 34. The other end of the first air pipe 36 is communicated with the accommodating cavity between the boosting block 81 and the boosting sleeve 82. An accommodating cavity is provided inside the end of the sealing plug 32 away from the sleeve 34. Two through holes 33 are provided on the sealing plug 32. The water pipe 31 is fixed to the sealing plug 32 and communicates with the through hole 33.The interior of the TBD tank bottom valve body 4 is provided with the backwashing structure 3 for cavity sealing and backwashing, and the backwashing structure 3 is connected to the linkage structure 8 inside the driving structure 1, and the transmission structure 2 is in contact with the linkage structure 8, so that it is convenient to drive the linkage structure 8 through the transmission structure 2, so that the linkage structure 8 drives the backwashing structure 3 to control the opening and closing of the TBD tank bottom valve body 4, and at the same time, it is convenient to backwash the interior of the TBD tank bottom valve body 4, so that the cleaning of the TBD tank bottom valve body 4 is more convenient and quick, that is: when the disc 61 slides away from one end of the TBD tank bottom valve body 4, the transmission ring The resistance between the pressure reducing unit 23 and the pressure reducing unit 81 is reduced, and the fourth return spring 83 is extended. The fourth return spring 83 drives the pressure reducing unit 81 to slide with the pressure reducing sleeve 82, so that the accommodating cavity between the pressure reducing unit 81 and the pressure reducing sleeve 82 becomes larger, and the gas in the accommodating cavity between the sliding sleeve 34 and the pressure reducing plug 35 enters the interior of the pressure reducing sleeve 82 through the first air pipe 36, and then the sliding sleeve 34 and the pressure reducing plug 35 slide under the action of atmospheric pressure, so that the sealing plug 32 and the TBD tank bottom valve body 4 do not conflict and seal. When the transmission ring 23 slides toward the pressure reducing unit 81, the transmission ring 23 and the pressure reducing unit 82 are in contact with each other. The pressure blocks 81 are in contact with each other, and the fourth return spring 83 is compressed, so that the accommodating cavity between the boost block 81 and the boost sleeve 82 becomes smaller, so that the gas passes through the first air pipe 36 and enters the accommodating cavity between the sliding sleeve 34 and the boost plug 35, and then the sliding sleeve 34 and the boost plug 35 slide under the action of air pressure, so that the sealing plug 32 and the TBD tank bottom valve body 4 are in contact and sealed, and the end of the sealing plug 32 is provided with an accommodating cavity, so that the end of the sealing plug 32 can be deformed, so that the sealing plug 32 and the TBD tank bottom valve body 4 have better sealing performance, and then cooperate with the disc 61 to double-layer the TBD tank bottom valve body 4. The sealing plug 32 can continue to be used after the disc 61 is damaged. When the disc 61 contacts the TBD tank bottom valve body 4, the sealing plug 32 completely seals the TBD tank bottom valve body 4. The water pipe 31 for drainage and the water pipe 31 for high-pressure flushing are opened. The high-pressure water flows through one of the through holes 33 to flush the inside of the TBD tank bottom valve body 4, and then is discharged from the other through hole 33 to the water pipe 31 for drainage, so that the inside of the TBD tank bottom valve body 4 can be cleaned after the TBD tank bottom valve body 4 is closed each time, avoiding the adhesion of materials inside the TBD tank bottom valve body 4. ;

[0028] During use, when the TBD tank bottom valve body 4 needs to be opened and closed, the rotation direction of the rotating wheel 11 is controlled, and the rotating wheel 11 rotates to drive the driving rod 12 to rotate. The driving rod 12 rotates the thread to drive the rack 15 to slide inside the guide rail 17. The sliding of the driving rod 12 thread drives the rack 15 to slide, which adopts the principle of a screw slider, and thus has an automatic limit function, so that the speed of controlling the discharge of the TBD tank bottom valve body 4 is more accurate and stable, and at the same time, the use of the rotating wheel 11 makes the operation more labor-saving. While the rack 15 drives the gear 16 to rotate, the gear 16 drives the transmission rod 21 to be threadedly connected with the support sleeve 14, so that the transmission rod 21 drives the valve stem 62 to rise and fall spirally, and the valve stem 62 spirally rises and falls, thereby driving the distance between the truncated cone-shaped disc 61 and the TBD tank bottom valve body 4 to change, and at the same time, the gear 16 slides with the rack 15, and the transmission rod 21 is threadedly connected with the support sleeve 14, driving the indicating block 22 on the transmission rod 21 to slide with the support sleeve 14, so as to facilitate the operation according to the indicating block 2 2 The position of the bottom end of the distance support sleeve 14 can intuitively judge the size of the flow inside the TBD tank bottom valve body 4, thereby making the flow adjustment more convenient and quick. The setting of the guide piece 63 is convenient for supporting the disc 61, so that the disc 61 is more evenly stressed. When the guide piece 63 rotates, the scraper 65 with a trapezoidal structure at the end is driven to slide between the TBD tank bottom valve body 4, and the solution bonded to the TBD tank bottom valve body 4 is taken out, which avoids the solution from bonding to the TBD tank bottom valve body 4, so that the sealing between the disc 61 and the TBD tank bottom valve body 4 is better. At the same time, the end of the scraper 65 is trapezoidal and has a guiding function, which is convenient for sliding at different parts of the inside of the TBD tank bottom valve body 4. A first return spring 66 is provided between the scraper 65 and the guide piece 63, so that after the end of the scraper 65 is worn, the first return spring 66 contacts the scraper 65, so that the scraper 65 always contacts the TBD tank bottom valve body 4, thereby making the cleaning effect of the TBD tank bottom valve body 4 better;The TBD tank bottom valve body 4 is connected to the reactor by bolts, so that the TBD tank bottom valve body 4 cooperates with the reactor to press the sealing ring 51. The top surface of the sealing ring 51 is arc-shaped, thereby increasing the contact area with the reactor, so that the sealing between the reactor and the TBD tank bottom valve body 4 is better. The sealing ring 51 is squeezed and deformed, so that the space of the receiving groove 52 is reduced, and the gas inside the receiving groove 52 enters between the sleeve 72 and the slider 73 through the second air pipe 53, and then drives the slider 73 to slide with the sleeve 72 through the air pressure, so that the second return spring 71 is extended, so that when the transmission ring 23 is at the bottom, the block 75 cannot contact the transmission ring 23. When the sealing ring 51 is damaged, Or when the resistance force of the TBD tank bottom valve body 4 on the sealing ring 51 is insufficient, the second return spring 71 contracts and drives the slider 73 to slide toward the second return spring 71, so that the block 75 at the end of the slider 73 engages with the transmission ring 23, thereby making the transmission ring 23 unable to rotate, making the transmission rod 21 unable to rotate, and thus making the gear 16 and its rack 15 unable to rotate, and thus making it impossible to drive the rotating wheel 11, thereby facilitating the intuitive reaction between the TBD tank bottom valve body 4 and the reactor whether the rotating wheel 11 can be rotated, effectively avoiding the phenomenon of leakage caused by the reaction solution added to the inside of the reactor, thereby making the sealing between the TBD tank bottom valve body 4 and the reactor easier to control;When the disc 61 slides away from one end of the TBD tank bottom valve body 4, the resistance between the transmission ring 23 and the boost block 81 is reduced, the fourth return spring 83 is extended, and the fourth return spring 83 drives the boost block 81 to slide with the boost sleeve 82, so that the accommodating cavity between the boost block 81 and the boost sleeve 82 becomes larger, and the gas in the accommodating cavity between the sliding sleeve 34 and the boost plug 35 enters the interior of the boost sleeve 82 through the first air pipe 36, and then the sliding sleeve 34 and the boost plug 35 are slid under the action of atmospheric pressure, so that the sealing plug 32 and the TBD tank bottom valve body 4 are not in conflict and sealed, and when the transmission ring 23 slides toward the boost block 81, the transmission ring 23 and the boost block 81 are in conflict, and the fourth return spring 83 is compressed, so that the accommodating cavity between the boost block 81 and the boost sleeve 82 becomes smaller, so that the gas enters the accommodating cavity between the sliding sleeve 34 and the boost plug 35 through the first air pipe 36, and then the sliding sleeve 34 and the boost plug 35 are accommodating cavity under the action of air pressure. The boost plug 35 slides between the sealing plug 32 and the TBD tank bottom valve body 4, and the end of the sealing plug 32 is provided with a receiving cavity, so that the end of the sealing plug 32 can be deformed, so that the sealing plug 32 and the TBD tank bottom valve body 4 have better sealing performance, and then cooperate with the disc 61 to perform double-layer sealing on the TBD tank bottom valve body 4, so that the sealing plug 32 can continue to be used after the disc 61 is damaged. When the disc 61 conflicts with the TBD tank bottom valve body 4, the sealing plug 32 completely seals the TBD tank bottom valve body 4, and the water pipe 31 for drainage and the water pipe 31 for high-pressure flushing are opened. The high-pressure water flows through one of the through holes 33 to flush the inside of the TBD tank bottom valve body 4, and then is discharged from the other through hole 33 to the water pipe 31 for drainage, so that it is convenient to clean the inside of the TBD tank bottom valve body 4 after closing the TBD tank bottom valve body 4 each time, and avoid the adhesion of materials inside the TBD tank bottom valve body 4. ;

[0029] The above shows and describes 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 to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A TBD tank bottom valve, characterized in that: The invention comprises a driving structure (1), a transmission structure (2), a backwashing structure (3), a TBD tank bottom valve body (4), a sealing structure (5), an opening and closing structure (6), a limiting structure (7) and a linkage structure (8); the bottom end of the TBD tank bottom valve body (4) is provided with the driving structure (1) for driving; the transmission structure (2) comprises a transmission rod (21), an indicating block (22) and a transmission ring (23); the transmission rod (21) penetrates the storage sleeve (13) and the support sleeve (14); the transmission rod (21) The transmission rod (21) is threadedly connected to the support sleeve (14); the bottom end of the transmission rod (21) is provided with the circular transmission ring (23); the sealing structure (5) comprises a sealing ring (51), a receiving groove (52) and a second air pipe (53); the top end of the TBD tank bottom valve body (4) is provided with the sealing ring (51) whose end section is arc-shaped; the sealing ring (51) is sleeved with the TBD tank bottom valve body (4); the inside of the sealing ring (51) is provided with the annular receiving groove (52); the second air pipe (53) is provided with a plurality of sealing rings (51) and a plurality of accommodating grooves (52). One end of the tube (53) passes through the TBD tank bottom valve body (4) and communicates with the receiving groove (52) inside the sealing ring (51). The limiting structure (7) comprises a second return spring (71), a sleeve (72), a slider (73), a third return spring (74) and a clamping block (75). The sleeve (72) is fixed inside the receiving sleeve (13). The inside of the sleeve (72) is provided with a slider (73) with an L-shaped cross-section and is slidably connected. The slider (73) is connected to the sleeve The second return spring (71) is provided between the slider (73) and the sleeve (72); the other end of the second air pipe (53) is connected to the space enclosed by the slider (73) and the sleeve (72); the slider (73) is connected to the clamping block (75); the third return spring (74) is provided between the clamping block (75) and the slider (73); the transmission ring (23) is provided at the top end of the clamping block (75); and the linkage structure (8) comprises a boosting block (81), a boosting sleeve (82) and a fourth return spring (83).

2. A TBD tank bottom valve according to claim 1, characterized in that: The opening and closing structure (6) comprises a disc (61), a valve stem (62), a guide piece (63), a sealing ring (64), a scraper (65) and a first return spring (66), one end of the valve stem (62) is fixed to the transmission rod (21), the valve stem (62) is rotatably and slidably connected to the TBD tank bottom valve body (4), the end of the valve stem (62) away from the transmission rod (21) is provided with the guide piece (63) and the disc (61), the guide piece (63) abuts against the disc (61), the disc (61) is in a truncated cone structure, the disc (61) is provided with a circular sealing ring (64) abutting against the TBD tank bottom valve body (4), the scraper (65) is slidably connected inside the guide piece (63), the end of the scraper (65) away from the guide piece (63) is trapezoidal, and the first return spring (66) is provided between the guide piece (63) and the scraper (65).

3. A TBD tank bottom valve according to claim 1, characterized in that: The driving structure (1) is connected to the transmission structure (2), the transmission structure (2) is connected to the opening and closing structure (6) for sealing the TBD tank bottom valve body (4), and the opening and closing structure (6) and the TBD tank bottom valve body (4) are rotatably connected; the top of the TBD tank bottom valve body (4) is provided with the sealing structure (5) for connecting to the reactor; the limiting structure (7) for limiting the transmission structure (2) is provided inside the driving structure (1), and the sealing structure (5) is connected to the limiting structure (7); the backwashing structure (3) for cavity sealing and backwashing is provided inside the TBD tank bottom valve body (4), the backwashing structure (3) is connected to the linkage structure (8) inside the driving structure (1), and the transmission structure (2) abuts against the linkage structure (8), and the driving structure (1) comprises a rotating wheel (1 1), a driving rod (12), a receiving sleeve (13), a supporting sleeve (14), a rack (15), a gear (16) and a guide rail (17), wherein the supporting sleeve (14) is arranged at the bottom end of the TBD tank bottom valve body (4), the receiving sleeve (13) is arranged at the bottom end of the supporting sleeve (14), the guide rail (17) is fixed inside the receiving sleeve (13), the rack (15) is slidably connected to the guide rail (17), the driving rod (12) is provided with a receiving sleeve (13), the gear (16) and the guide rail (17) are provided with a receiving sleeve (13), the receiving sleeve (13) is provided with a receiving sleeve (16 ... 12) is connected through the storage sleeve (13) and the rack (15), the driving rod (12) is rotatably connected to the storage sleeve (13), the driving rod (12) is threadedly connected to the rack (15), the rotating wheel (11) is provided at one end of the driving rod (12) away from the rack (15), the rack (15) is meshed with the gear (16), and the thickness of the gear (16) is greater than the thickness of the rack (15).

4. A TBD tank bottom valve according to claim 3, characterized in that: The gear (16) is fixed to the end of the transmission rod (21); the end of the transmission rod (21) facing away from the storage sleeve (13) is provided with the indicating block (22) which is slidably connected to the support sleeve (14); the transmission rod (21) and the indicating block (22) are rotationally connected; and a plurality of through holes are arranged in a circular array on the transmission ring (23).

5. A TBD tank bottom valve according to claim 1, characterized in that: The boost sleeve (82) of the semi-annular structure is fixed to the storage sleeve (13), the center of the gear (16) and the center of the boost sleeve (82) are at the same position, the semi-annular boost block (81) is slidably connected to the boost sleeve (82), the fourth return spring (83) is arranged between the boost block (81) and the boost sleeve (82), and the transmission ring (23) is in contact with the boost block (81).

6. A TBD tank bottom valve according to claim 1, characterized in that: The backwashing structure (3) comprises a water pipe (31), a sealing plug (32), a through hole (33), a sliding sleeve (34), a pressurizing plug (35) and a first air pipe (36); the sealing plug (32) is slidably connected to the TBD tank bottom valve body (4); the end of the sealing plug (32) is provided with the sliding sleeve (34); the pressurizing plug (35) is slidably connected to the sliding sleeve (34); one end of the first air pipe (36) is fixed to the pressurizing plug (35) and The first air pipe (36) is in communication with the accommodating cavity between the boosting plug (35) and the sliding sleeve (34); the other end of the first air pipe (36) is in communication with the accommodating cavity between the boosting block (81) and the boosting sleeve (82); an accommodating cavity is provided inside the end of the sealing plug (32) facing away from the sliding sleeve (34); two through holes (33) are provided on the sealing plug (32); and the water pipe (31) is fixed to the sealing plug (32) and is in communication with the through holes (33).

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