Overpressure prevention mechanism of tail gas absorption tower

Abstract

The utility model relates to the technical field of tail gas absorption towers, and discloses a tail gas absorption tower anti-overpressure mechanism which comprises a tail gas absorption tower, the outer wall of the tail gas absorption tower is connected with a pressure relief square pipe, a pressure relief mechanism is arranged in the pressure relief square pipe, and the pressure relief mechanism comprises a guide rod, a push frame, an elastic piece, a fixed frame and a sliding seat. The guide rod is fixedly installed at the center of an inner cavity of the pressure relief square pipe, the two sliding seats are vertically symmetrically arranged in the pressure relief square pipe in a sliding mode, a plurality of first springs are further arranged between the sliding seats and the fixing frame, and the left end, located between the two sliding seats, of the pushing frame is used for pushing the two sliding seats to be away from each other; the elastic pieces are located at the upper end and the lower end of the push frame and used for pushing the push frame leftwards, and an exhaust mechanism and an alarm mechanism are further arranged on the outer side of the pressure relief square pipe. The pressure relief device has the advantages that pressure can be automatically relieved, and an alarm can be given when the pressure is too high.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas absorption towers, in particular to an overpressure prevention mechanism for tail gas absorption towers. Background Art

[0002] The application of tail gas absorption tower has not only made an outstanding contribution to environmental protection, but also saved a lot of energy for the enterprise and created higher value. During the production process of APT workshop, tail gas will be discharged. The tail gas is absorbed by the absorption tower and then discharged to the combustion furnace for incineration.

[0003] Since the absorption tower is connected to a vacuum pump, the absorption tower system will have a certain pressure. If the gas pressure inside the absorption tower is too high and cannot be discharged in time, it may cause the system pressure to be too high and cause an accident, posing a great safety hazard. Therefore, it is necessary to propose an exhaust gas absorption tower anti-overpressure mechanism to solve the above problem. Utility Model Content

[0004] The utility model aims to provide an overpressure prevention mechanism for a tail gas absorption tower, which can automatically release pressure and give an alarm when the pressure is too high.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: an anti-overpressure mechanism for a tail gas absorption tower, comprising a tail gas absorption tower, the outer wall of the tail gas absorption tower is connected to a pressure relief square tube, a pressure relief mechanism is arranged in the pressure relief square tube, the pressure relief mechanism comprises a guide rod, a push frame, an elastic member, a fixed frame and a sliding seat, the guide rod is fixedly installed at the center of the inner cavity of the pressure relief square tube, the number of the sliding seats is two and they are symmetrically slidably arranged in the pressure relief square tube up and down, a plurality of first springs are also arranged between the sliding seat and the fixed frame, the left end of the push frame is located between the two sliding seats and is used to push the two sliding seats away from each other, the elastic member is located at the upper and lower ends of the push frame and is used to push it to the left, and an exhaust mechanism and an alarm mechanism are also arranged on the outside of the pressure relief square tube.

[0006] By adopting the above technical solution, when the gas pressure in the tail gas absorption tower is too high, the push frame is pushed to the right, and the push frame pushes the two sliding seats away from each other and squeezes the first spring, so that the opening in the pressure relief square tube is opened, and the gas is discharged through the exhaust mechanism, thereby achieving pressure relief. After the pressure stabilizes, the elastic member controls the push frame to reset, so that the two sliding seats are close to each other under the action of the first spring, thereby closing the opening in the pressure relief square tube and reducing gas leakage.

[0007] The utility model is further configured as follows: an inclined surface is disposed on one side opposite to the two sliding seats, and a magnetic attraction sheet is disposed near the inclined surface.

[0008] By adopting the above technical solution, the magnetic sheet makes the two sliding seats fit tightly together, reducing gas leakage, and only when the air pressure reaches a certain dangerous value will the sliding seat be pushed to move.

[0009] The utility model is further configured as follows: the right side of the push frame is V-shaped and matches with the inclined surfaces on the two sliding seats, and the push frame is also provided with a push wheel in contact with the inclined surfaces.

[0010] By adopting the above technical solution, when the push frame moves rightward due to air pressure, the push wheel slides horizontally on the inclined surface, so that the upper and lower sliding seats move away from each other, thereby smoothly achieving pressure relief.

[0011] The utility model is further configured as follows: the guide rod passes through the right side of the push frame and is slidably connected thereto, and the two magnetic suction sheets are both provided with semicircular grooves adapted to the guide rod.

[0012] By adopting the above technical solution, the setting of the guide rod can improve the stability of the horizontal sliding of the push frame, and the setting of the semicircular groove enables the two magnetic suction plates to fit tightly with the outer wall of the guide rod when they are sucked tightly, thereby avoiding leakage.

[0013] The utility model is further configured as follows: the elastic member includes a fixing seat installed on the upper and lower side walls of the pressure relief square tube, a limiting rod slidably connected to the end of the push frame is installed in the fixing seat, and a second spring located on the right side of the push frame is sleeved on the limiting rod.

[0014] By adopting the above technical solution, after the pressure is released, the second spring in the squeezed state is stretched to push the push frame to the left, thereby resetting the two sliding seats and reducing gas leakage.

[0015] The utility model is further configured as follows: the exhaust mechanism includes a sliding frame installed on the right side of the inner cavity of the pressure relief square tube and a plurality of pressure relief ports on the upper and lower side walls; the initial position of the sliding frame corresponds to the position of the pressure relief port; and a push rod connected to the sliding frame is hinged at the bottom of the right side of the sliding seat.

[0016] By adopting the above technical solution, when the air pressure gradually increases, the distance between the sliding seats on both sides is enlarged, so that the push rod rotates in the horizontal direction, pushing the sliding frame to move right, so that the pressure relief ports are opened one by one. When the air pressure is higher, the number of pressure relief ports opened increases, so that the pressure can be reasonably relieved according to the actual pressure conditions.

[0017] The utility model is further configured as follows: the cross section of the sliding frame is in an I-shape, and the guide rod passes through the center position of the sliding frame and is slidably connected thereto.

[0018] By adopting the above technical solution, the sliding frame can slide smoothly and realize stable opening and closing of the pressure relief port.

[0019] The utility model is further configured as follows: the alarm mechanism comprises an alarm button and an alarm installed on the upper end surface of the pressure relief square tube, and a knocking device for touching the alarm button is installed on the left side of the sliding seat at the upper end.

[0020] By adopting the above technical solution, when the air pressure is too high to be relieved, the sliding seat continues to move outward, causing the knocking device to work, knocking the alarm button, and controlling the alarm to sound the whistle, thereby realizing the alarm and reminding the staff to perform maintenance in time, thereby further increasing its safety.

[0021] The utility model is further configured as follows: the knocking device includes a rotating shaft rotatably arranged at the upper end of the pressure relief square tube, two gears and a knocking plate located between the two gears are installed on the rotating shaft, and a rack respectively meshing with the two gears is installed on the left side of the sliding seat at the upper end.

[0022] By adopting the above technical solution, when the upper sliding seat moves upward, the two racks are driven to move upward, and the two gears are pushed to rotate synchronously through meshing, and the knocking plate is driven to rotate under the action of the rotating shaft. When the knocking plate rotates to a certain angle, the end will contact the alarm button and press it, thereby realizing the alarm.

[0023] The utility model is further configured as follows: the alarm is electrically connected to the alarm button, and the rack is movably connected to the fixing frame.

[0024] By adopting the above technical solution, when the alarm button is pressed, the alarm can be stably controlled to work in time, so that the staff can perform maintenance in time.

[0025] The beneficial effects of the utility model are:

[0026] 1. In the utility model, when the air pressure in the tail gas absorption tower is too high, the push frame is pushed right, and the push frame pushes the two sliding seats away from each other and squeezes the first spring to open the opening in the pressure relief square tube. As the air pressure gradually increases, the distance between the sliding seats on both sides is enlarged, so that the push rod rotates in the horizontal direction, pushing the sliding frame to move right, so that the pressure relief ports are opened one by one. When the air pressure is higher, the number of pressure relief ports opened is more, so that the pressure can be reasonably relieved according to the actual pressure conditions, making it safer.

[0027] 2. According to the utility model, when the air pressure is too high to be relieved, the sliding seat continues to move outward. During the upward movement of the upper sliding seat, the two racks are driven upward, and the two gears are driven to rotate synchronously through meshing. The striking plate is driven to rotate under the action of the rotating shaft. When the striking plate rotates to a certain angle, the end portion will contact the alarm button and press it, thereby generating an alarm and reminding the staff to carry out maintenance in time, thereby further increasing its safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 The utility model discloses an overall structural diagram of an overpressure prevention mechanism of a tail gas absorption tower.

[0030] Figure 2 This utility model Figure 1 Internal structure diagram of the medium pressure relief square tube.

[0031] Figure 3 This utility model Figure 2 Connection diagram between the middle elastic member and the push frame.

[0032] Figure 4 This utility model Figure 2 Structural diagram of the percussion device.

[0033] In the figure, 1, tail gas absorption tower; 2, pressure relief square pipe; 3, pressure relief mechanism; 31, guide rod; 32, push frame; 33, fixed frame; 34, sliding seat; 35, magnetic sheet; 36, push wheel; 37, fixed seat; 38, limit rod; 39, second spring; 310, first spring; 4, exhaust mechanism; 41, sliding frame; 42, pressure relief port; 43, push rod; 5, alarm mechanism; 51, alarm button; 52, alarm; 53, rotating shaft; 54, gear; 55, knocking plate; 56, rack. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 4As shown, an overpressure prevention mechanism for a tail gas absorption tower comprises a tail gas absorption tower 1, the outer wall of the tail gas absorption tower 1 is connected to a pressure relief square tube 2, a pressure relief mechanism 3 is arranged in the pressure relief square tube 2, the pressure relief mechanism 3 comprises a guide rod 31, a push frame 32, an elastic member, a fixed frame 33 and a sliding seat 34, the guide rod 31 is fixedly installed at the center of the inner cavity of the pressure relief square tube 2, there are two sliding seats 34 and they are symmetrically slidably arranged in the pressure relief square tube 2 up and down, a plurality of first springs 310 are also arranged between the sliding seat 34 and the fixed frame 33, the push frame 32 is located at the left end between the two sliding seats 34 and is used to push the two sliding seats 34 away from each other, the elastic members are located at the upper and lower ends of the push frame 32 and are used to push it to the left, and an exhaust mechanism 4 and an alarm mechanism 5 are also arranged on the outside of the pressure relief square tube 2.

[0036] Furthermore, an inclined surface is disposed on one side opposite to the two sliding seats 34 , and a magnetic attraction sheet 35 is disposed near the inclined surface.

[0037] Furthermore, the right side of the push frame 32 is V-shaped and matches with the inclined surfaces on the two sliding seats 34 . The push frame 32 is also provided with a push wheel 36 that contacts with the inclined surfaces.

[0038] Furthermore, the guide rod 31 passes through the right side of the push frame 32 and is slidably connected thereto, and the two magnetic suction plates 35 are both provided with semicircular grooves adapted to the guide rod 31 .

[0039] Furthermore, the elastic member includes a fixing seat 37 installed on the upper and lower side walls of the pressure relief square tube 2, and a limiting rod 38 slidably connected to the end of the push frame 32 is installed in the fixing seat 37, and a second spring 39 located on the right side of the push frame 32 is sleeved on the limiting rod 38.

[0040] Furthermore, the exhaust mechanism 4 includes a sliding frame 41 installed on the right side of the inner cavity of the pressure relief square tube 2 and a plurality of pressure relief ports 42 on the upper and lower side walls. The initial position of the sliding frame 41 corresponds to the position of the pressure relief port 42, and a push rod 43 connected to the sliding frame 41 is hinged at the bottom of the right side of the sliding seat 34.

[0041] Furthermore, the cross section of the sliding frame 41 is in an I-shape, and the guide rod 31 passes through the center of the sliding frame 41 and is slidably connected thereto.

[0042] Furthermore, the alarm mechanism 5 includes an alarm button 51 and an alarm 52 installed on the upper end surface of the pressure relief square tube 2 , and a knocking device for touching the alarm button 51 is installed on the left side of the upper end sliding seat 34 .

[0043] Furthermore, the knocking device includes a rotating shaft 53 rotatably arranged at the upper end of the pressure relief square tube 2, on which are mounted two gears 54 and a knocking plate 55 located between the two gears 54, and on the left side of the upper end sliding seat 34, a rack 56 respectively meshing with the two gears 54 is installed.

[0044] Furthermore, the alarm 52 is electrically connected to the alarm button 51 , and the rack 56 is movably connected to the fixing frame 33 .

[0045] The working principle of the utility model is: when the air pressure in the tail gas absorption tower 1 is too high, the push frame 32 is pushed right, and the push frame 32 pushes the two sliding seats 34 away from each other and squeezes the first spring 310 to open the opening in the pressure relief square tube 2. As the air pressure gradually increases, the spacing between the sliding seats 34 on both sides is enlarged, so that the push rod 43 rotates in the horizontal direction, pushing the sliding frame 41 to move right, so that the pressure relief ports 42 are opened one by one. When the air pressure is higher, the number of pressure relief ports 42 opened is more. When the air pressure is too high to be relieved and cannot be solved, the sliding seat 34 continues to move outward. In the process of the upper sliding seat 34 moving up, the two racks 56 are driven to move up, and the two gears 54 are driven to rotate synchronously through meshing. Under the action of the rotating shaft 53, the knocking plate 55 is driven to rotate. When the knocking plate 55 rotates to a certain angle, the end will contact the alarm button 51 and press it, thereby realizing an alarm.

Claims

1. A tail gas absorption tower overpressure prevention mechanism, comprising a tail gas absorption tower (1), characterized in that: The outer wall of the tail gas absorption tower (1) is connected to a pressure relief square tube (2), and a pressure relief mechanism (3) is arranged in the pressure relief square tube (2). The pressure relief mechanism (3) comprises a guide rod (31), a push frame (32), an elastic member, a fixed frame (33) and a sliding seat (34). The guide rod (31) is fixedly installed at the center of the inner cavity of the pressure relief square tube (2). There are two sliding seats (34) and they are symmetrically slidably arranged in the pressure relief square tube (2) up and down. A plurality of first springs (310) are also arranged between the sliding seat (34) and the fixed frame (33). The push frame (32) is located at the left end between the two sliding seats (34) and is used to push the two sliding seats (34) away from each other. The elastic member is located at the upper and lower ends of the push frame (32) and is used to push it to the left. An exhaust mechanism (4) and an alarm mechanism (5) are also arranged on the outside of the pressure relief square tube (2).

2. The tail gas absorption tower overpressure prevention mechanism according to claim 1, characterized in that: The two sliding seats (34) are each provided with an inclined surface on one side opposite to the other, and a magnetic attraction sheet (35) is also provided at a position close to the inclined surface.

3. The tail gas absorption tower overpressure prevention mechanism according to claim 2, characterized in that: The right side of the push frame (32) is V-shaped and matches with the inclined surfaces on the two sliding seats (34). The push frame (32) is also provided with a push wheel (36) in contact with the inclined surfaces.

4. The tail gas absorption tower overpressure prevention mechanism according to claim 3, characterized in that: The guide rod (31) passes through the right side of the push frame (32) and is slidably connected thereto, and the two magnetic suction sheets (35) are both provided with semicircular grooves adapted to the guide rod (31).

5. The tail gas absorption tower overpressure prevention mechanism according to claim 1, characterized in that: The elastic member comprises a fixing seat (37) mounted on the upper and lower side walls of the pressure relief square tube (2), a limiting rod (38) slidably connected to the end of the push frame (32) is mounted in the fixing seat (37), and a second spring (39) located on the right side of the push frame (32) is sleeved on the limiting rod (38).

6. The tail gas absorption tower overpressure prevention mechanism according to claim 1, characterized in that: The exhaust mechanism (4) comprises a sliding frame (41) installed on the right side of the inner cavity of the pressure relief square tube (2) and a plurality of pressure relief ports (42) on the upper and lower side walls; the initial position of the sliding frame (41) corresponds to the position of the pressure relief ports (42); and a push rod (43) connected to the sliding frame (41) is hingedly connected to the bottom of the right side of the sliding seat (34).

7. The tail gas absorption tower overpressure prevention mechanism according to claim 6, characterized in that: The cross section of the sliding frame (41) is in an I-shape, and the guide rod (31) passes through the center of the sliding frame (41) and is slidably connected thereto.

8. The tail gas absorption tower overpressure prevention mechanism according to claim 1, characterized in that: The alarm mechanism (5) comprises an alarm button (51) and an alarm (52) mounted on the upper end surface of the pressure relief square tube (2), and a knocking device for touching the alarm button (51) is mounted on the left side of the sliding seat (34) at the upper end.

9. The tail gas absorption tower overpressure prevention mechanism according to claim 8, characterized in that: The knocking device comprises a rotating shaft (53) rotatably arranged on the upper end of the pressure relief square tube (2), two gears (54) and a knocking plate (55) located between the two gears (54) are installed on the rotating shaft (53), and racks (56) respectively meshing with the two gears (54) are installed on the left side of the sliding seat (34) located at the upper end.

10. The tail gas absorption tower overpressure prevention mechanism according to claim 9, characterized in that: The alarm device (52) is electrically connected to the alarm button (51), and the rack (56) is movably connected to the fixing frame (33).

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