High-safety liquid nitrogen waste gas condensing and recycling device

Abstract

The invention discloses a high-safety liquid nitrogen waste gas condensation recycling device, and relates to the technical field of liquid nitrogen waste gas condensation recycling, the high-safety liquid nitrogen waste gas condensation recycling device comprises a gas inlet pipe, a liquid nitrogen wash tail gas buffer tank pressure regulating valve is arranged on the gas inlet pipe, and a liquid nitrogen wash tail gas buffer tank is fixedly mounted on the right side of the gas inlet pipe; an inert gas generator is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, the liquid nitrogen wash tail gas buffer tank is communicated with the inert gas generator through a third pipeline, a sulfur recovery combustion furnace is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, and an elevated torch incandescent light is arranged on the right side of the liquid nitrogen wash tail gas buffer tank; the liquid nitrogen wash tail gas buffer tank is communicated with the elevated torch incandescent light through a first pipeline, the separation device is arranged in the gas inlet pipe, the contact area with harmful gas can be increased through rotation of an activated carbon plate, and the adsorption effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of condensation recovery and utilization of liquid nitrogen waste gas, and in particular to a liquid nitrogen waste gas condensation recovery and utilization device with high safety. Background Art

[0002] The design of the liquid nitrogen waste gas condensation recovery and utilization device is aimed at realizing the effective recovery, condensation and reuse of waste gas generated during the use of liquid nitrogen.

[0003] The patent with patent announcement number CN215387654U relates to a liquid nitrogen waste gas condensation and recovery device, including a recovery barrel, the top of which is fixedly connected with an insulation plate. The patent can provide power through the coordinated use of components such as a condensation pump and a condensation cylinder on the condensation mechanism, and connect the condensation cylinder through the connecting sleeve at the bottom. The upper circulation pipe and the lower circulation pipe around the condensation cylinder are used to condense the liquid nitrogen waste gas in the recovery barrel. The drive belt is connected through a turntable to drive the connecting cylinder at the lower part of the drive rod to rotate, and then the baffle on one side of the connecting cylinder is driven to slide out from the recovery head to recycle the condensed liquid nitrogen waste gas, thereby improving the working efficiency of liquid nitrogen waste gas recovery and avoiding the problem that the existing liquid nitrogen waste gas recovery device does not have a special control mechanism at the discharge port, resulting in the inconvenience of controlling the flow of the finished product when the liquid nitrogen waste gas is recovered.

[0004] In the above patent, a drive belt is connected to a turntable to drive the connecting tube at the bottom of the transmission rod to rotate, thereby driving the baffle plate on one side of the connecting tube to slide out from the recovery head to recycle the condensed liquid nitrogen waste gas, thereby improving the working efficiency of liquid nitrogen waste gas recovery and avoiding the problem that the existing liquid nitrogen waste gas recovery device does not have a special control mechanism at the discharge port, resulting in the inconvenience of controlling the flow rate of the finished product when the liquid nitrogen waste gas is recovered. However, there are harmful gases in the liquid nitrogen waste gas recovery device, and direct recovery may cause the harmful gases to mix together, posing a safety hazard. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a liquid nitrogen waste gas condensation and recovery device with high safety, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highly safe liquid nitrogen waste gas condensation recovery and utilization device, comprising: an air inlet pipe, a liquid nitrogen wash tail gas buffer tank pressure regulating valve is arranged on the air inlet pipe, a liquid nitrogen wash tail gas buffer tank is fixedly installed on the right side of the air inlet pipe, an inert gas generator is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, the liquid nitrogen wash tail gas buffer tank and the inert gas generator are connected through a No. 3 pipeline, a sulfur recovery combustion furnace is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, and the liquid nitrogen wash tail gas buffer tank is connected to the inert gas generator through a No. 3 pipeline. An elevated torch light is arranged on the right side of the tail gas buffer tank, the liquid nitrogen-washed tail gas buffer tank is connected to the elevated torch light through pipeline No. 1, and the sulfur recovery combustion furnace is connected to pipeline No. 1 through pipeline No. 2; a separation device is arranged inside the air intake pipe, and the separation device includes a support frame, a motor, a fan, a reciprocating screw, an elastic telescopic rod, a mounting frame, an activated carbon plate, a threaded block, an L-shaped rod, a long rod and a ring. The rotation of the motor will drive the fan to rotate, and the rotation of the fan will drive the reciprocating screw to rotate, and the rotation of the reciprocating screw The rotation of the reciprocating screw rod will drive the elastic telescopic rod to rotate, and the rotation of the elastic telescopic rod will drive the installation frame to rotate, and the rotation of the installation frame will drive the activated carbon plate to rotate. The support frame is fixedly installed inside the air intake pipe, the motor is fixedly installed on the surface of the support frame, the fan is fixedly installed on the output end of the motor, the reciprocating screw rod is fixedly installed on the side of the fan away from the motor, the elastic telescopic rod is fixedly installed on the side of the reciprocating screw rod away from the fan, the installation frame is fixedly installed on the free end of the elastic telescopic rod, the activated carbon plate is fixedly installed on the inner wall of the installation frame, the threaded block is threadedly installed on the circumferential surface of the reciprocating screw rod, the L-shaped rod is fixedly installed on the top of the inner wall of the air intake pipe, the L-shaped rod slides through the threaded block, the long rod is fixedly installed on the side of the threaded block away from the motor, and the ring is fixedly installed on the side of the installation frame close to the elastic telescopic rod. The rotation of the reciprocating screw rod will drive the threaded block to reciprocate, the reciprocating motion of the threaded block will drive the long rod to reciprocate, the reciprocating motion of the long rod will push the reciprocating motion of the ring, the reciprocating motion of the ring will drive the installation frame to reciprocate, and the reciprocating motion of the installation frame will drive the activated carbon plate to reciprocate.

[0007] According to the above technical solution, the long rod slides on the inner wall of the ring, and the long rod can push the activated carbon plate to move back and forth through the sliding of the long rod and the ring. A burner is arranged inside the inert gas generator.

[0008] According to the above technical solution, a waste residue recovery device for recovering waste residue is provided at the bottom of the intake pipe, and an anti-accumulation device is provided on the waste residue recovery device. The waste residue recovery device includes a collecting frame, a rotating plate and an elastic telescopic plate. The activated carbon plate moves in a direction away from the motor to contact the free end of the elastic telescopic plate. The scraper on the free end of the elastic telescopic plate will scrape off the particles attached to the activated carbon plate. The collecting frame is fixedly installed at the bottom of the intake pipe, the rotating plate is rotatably installed at the bottom of the collecting frame, and the elastic telescopic plate is fixedly installed on the inner wall of the intake pipe.

[0009] According to the above technical solution, a short rod is fixedly installed at the free end of the elastic telescopic plate, a connecting frame is fixedly installed on the inner wall of the collection frame, a rotating plate is rotatably installed on the inner wall of the connecting frame, a short plate is fixedly installed on the top of the rotating plate, a pull rope is fixedly installed on the top surface of the short plate, and the end of the pull rope away from the short plate is fixedly installed on the surface of the short rod. When the rotating plate rotates downward, the particles scraped off enter the collection frame. When the elastic telescopic plate is reset, the No. 1 torsion spring will drive the rotating plate to reset.

[0010] According to the above technical solution, a No. 1 torsion spring is arranged between the connecting frame and the rotating plate, and the rotating plate is driven to reset by the No. 1 torsion spring, and a scraper is arranged at the free end of the elastic telescopic plate.

[0011] According to the above technical solution, the anti-accumulation device includes a fixed seat, a connecting plate, a fixed plate, a sliding seat and a push plate. The fixed seat is driven to rotate downward by rotating the rotating plate downward. The downward rotation of the fixed seat will drive the connecting plate to rotate downward. The downward rotation of the connecting plate will drive the fixed plate to rotate downward. The fixed seat is fixedly installed at the bottom of the rotating plate. The connecting plate is rotatably installed on the inner wall of the fixed seat. The fixed plate is fixedly installed at the bottom of the connecting plate. The sliding seat is slidably installed on the inner wall of the collection frame. The fixed plate is rotatably installed on the inner wall of the sliding seat. The push plate is fixedly installed at the bottom of the sliding seat.

[0012] According to the above technical solution, a fixed rod is fixedly installed at the bottom of the push plate, a connecting slide is slidably installed on the top of the rotating plate, a rotating block is fixedly installed on the surface of the connecting slide, and a limiting block is fixedly installed on the surface of the connecting slide. The movement of the rotating block in the direction away from the fixed rod will drive the connecting slide to move in the direction away from the fixed rod, and the movement of the connecting slide in the direction away from the fixed rod will loosen the accumulated particles.

[0013] According to the above technical solution, a No. 1 spring is arranged between the sliding seat and the collection frame, and the sliding seat is reset by the No. 1 spring. A No. 2 spring is arranged between the rotating plate and the connecting slide plate, and the rotating plate is reset by the No. 2 spring. A No. 2 torsion spring is arranged between the connecting slide plate and the rotating block, and the rotating block is reset by the No. 2 torsion spring. The limit block is in contact with the surface of the rotating block.

[0014] The present invention provides a highly safe liquid nitrogen waste gas condensation and recycling device, which has the following beneficial effects: (1) In the present invention, the rotation of the motor drives the fan to rotate, the rotation of the fan drives the reciprocating screw to rotate, the rotation of the reciprocating screw drives the elastic telescopic rod to rotate, the rotation of the elastic telescopic rod drives the installation frame to rotate, the rotation of the installation frame drives the activated carbon plate to rotate, and the rotation of the activated carbon plate can increase the contact area with harmful gases and improve the adsorption effect. The reciprocating motion of the circular ring drives the reciprocating motion of the installation frame, and the reciprocating motion of the installation frame drives the reciprocating motion of the activated carbon plate. The activated carbon plate rotates and reciprocates back and forth at the same time, thereby increasing the contact area between the activated carbon plate and harmful gases and improving the separation effect.

[0015] (2) In the present invention, the activated carbon plate moves away from the motor and contacts the free end of the elastic expansion plate. The scraper on the free end of the elastic expansion plate will scrape off the particles attached to the activated carbon plate to prevent the particles from adhering to the activated carbon plate and affecting the adsorption effect of the activated carbon plate on harmful gases. When the rotating plate rotates downward, the particles scraped off enter the collection frame. When the elastic expansion plate is reset, the No. 1 torsion spring will drive the rotating plate to reset. The rotating plate rotates so that the particles can effectively enter the collection frame. At the same time, the resetting of the rotating plate can effectively prevent the particles inside the collection frame from being blown out when the liquid nitrogen exhaust gas enters the air intake pipe, thereby affecting the separation effect of the activated carbon plate.

[0016] (3) This invention pushes the particles that fall into the collection frame flat by moving the push plate back and forth, preventing the particles from piling up too high and blocking the rotating plate, which would cause the user to frequently open the rotating plate to discharge the particles inside, causing the device to need to be frequently shut down, affecting the separation efficiency. At the same time, the movement of the connecting slide away from the fixed rod will loosen the accumulated particles, making it easier for the particles to be collected and stored in the collection frame, thereby improving the storage effect. At the same time, when the fixed rod is reset, it will push the rotating block to rotate, and the rotation of the rotating block will not hinder the reset of the fixed rod, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the air intake pipe of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the installation frame of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the collection frame of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement of part A; Figure 6 This is a schematic diagram of the structure of the air intake pipe and the elastic expansion plate of the present invention; Figure 7 It is a schematic structural diagram of the anti-accumulation device of the present invention.

[0018] In the figure: 1, air intake pipe; 2, liquid nitrogen washing tail gas buffer tank; 3, inert gas generator; 31, No. 3 pipeline; 4, sulfur recovery combustion furnace; 41, No. 2 pipeline; 5, elevated torch long-burning lamp; 51, No. 1 pipeline; 6, support frame; 7, motor; 8, fan; 9, reciprocating screw rod; 10, elastic telescopic rod; 11, installation frame; 12, activated carbon plate; 13, threaded block; 14, L-shaped rod; 15, long rod; 16. Ring; 171. Collecting frame; 172. Turntable; 173. Elastic telescopic plate; 174. Short rod; 175. Connecting frame; 176. Rotating plate; 177. Short plate; 178. Pull rope; 181. Fixed seat; 182. Connecting plate; 183. Fixed plate; 184. Sliding seat; 185. Push plate; 186. Fixed rod; 187. Connecting slide plate; 188. Rotating block; 189. Limiting block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 3One embodiment of the present invention is: a liquid nitrogen waste gas condensation recovery and utilization device with high safety, comprising: an air inlet pipe 1, a liquid nitrogen tail gas buffer tank pressure regulating valve is arranged on the air inlet pipe 1, a liquid nitrogen tail gas buffer tank 2 is fixedly installed on the right side of the air inlet pipe 1, an inert gas generator 3 is arranged on the right side of the liquid nitrogen tail gas buffer tank 2, the liquid nitrogen tail gas buffer tank 2 and the inert gas generator 3 are connected through a No. 3 pipeline 31, a sulfur recovery combustion furnace 4 is arranged on the right side of the liquid nitrogen tail gas buffer tank 2, and a liquid An elevated torch light 5 is arranged on the right side of the nitrogen-washed tail gas buffer tank 2, the liquid nitrogen-washed tail gas buffer tank 2 is connected to the elevated torch light 5 through a No. 1 pipeline 51, and the sulfur recovery combustion furnace 4 is connected to the No. 1 pipeline 51 through a No. 2 pipeline 41; a separation device is arranged inside the air intake pipe 1, and the separation device includes a support frame 6, a motor 7, a fan 8, a reciprocating screw rod 9, an elastic telescopic rod 10, a mounting frame 11, an activated carbon plate 12, a threaded block 13, an L-shaped rod 14, and a long rod 15. The ring 16 can increase the contact area with harmful gases through the rotation of the activated carbon plate 12, thereby improving the adsorption effect. The support frame 6 is fixedly mounted inside the air intake pipe 1, the motor 7 is fixedly mounted on the surface of the support frame 6, the fan 8 is fixedly mounted on the output end of the motor 7, the reciprocating screw 9 is fixedly mounted on the side of the fan 8 away from the motor 7, the elastic telescopic rod 10 is fixedly mounted on the side of the reciprocating screw 9 away from the fan 8, the mounting frame 11 is fixedly mounted on the free end of the elastic telescopic rod 10, the activated carbon plate 12 is fixedly mounted on the inner wall of the mounting frame 11, the threaded block 13 is threadedly mounted on the circumferential surface of the reciprocating screw 9, the L-shaped rod 14 is fixedly mounted on the top of the inner wall of the air intake pipe 1, the L-shaped rod 14 slides through the threaded block 13, the long rod 15 is fixedly mounted on the side of the threaded block 13 away from the motor 7, and the ring 16 is fixedly mounted on the side of the mounting frame 11 close to the elastic telescopic rod 10. The activated carbon plate 12 rotates and reciprocates back and forth, thereby increasing the contact area between the activated carbon plate 12 and the harmful gases, thereby improving the separation effect.

[0021] The long rod 15 slides on the inner wall of the ring 16 . The long rod 15 slides with the ring 16 , so that the long rod 15 can push the activated carbon plate 12 to move back and forth. A burner is arranged inside the inert gas generator 3 .

[0022] When the present embodiment is working, the liquid nitrogen washing tail gas is introduced into the liquid nitrogen washing tail gas buffer tank 2, and is sent to the elevated torch pilot lamp 5 through the No. 1 pipeline 51 for use as the torch pilot lamp fuel gas and the acid torch accompanying combustion gas, and is sent to the sulfur recovery combustion furnace 4 through the No. 2 pipeline 41 for use as the combustion furnace accompanying combustion gas; it is sent to the inert gas generator 3 through the No. 3 pipeline 31 for combustion, and the motor 7 is started to rotate before the introduction, and the rotation of the motor 7 will drive the fan 8 to rotate, and the rotation of the fan 8 will drive the reciprocating screw 9 to rotate, and the rotation of the reciprocating screw 9 will drive the elastic telescopic rod 10 to rotate, and the rotation of the elastic telescopic rod 10 will drive the installation frame 11 to rotate, and the installation frame 1 1 rotation will drive the activated carbon plate 12 to rotate, through the rotation of the activated carbon plate 12 can increase the contact area with the harmful gas, improve the adsorption effect, at the same time the reciprocating screw 9 rotation will drive the threaded block 13 to reciprocate, the threaded block 13 reciprocating motion will drive the long rod 15 to reciprocate, the long rod 15 reciprocating motion will push the ring 16 to reciprocate, the ring 16 reciprocating motion will drive the installation frame 11 to reciprocate, the installation frame 11 reciprocating motion will drive the activated carbon plate 12 to reciprocate, the activated carbon plate 12 rotates and reciprocates back and forth, the contact area between the activated carbon plate 12 and the harmful gas is increased, and the separation effect is improved.

[0023] See also Figure 1-Figure 7 On the basis of the above-mentioned embodiment, in another embodiment of the present invention, a waste residue recovery device for recovering waste residue is provided at the bottom of the air intake pipe 1, and an anti-deposition device is provided on the waste residue recovery device. The waste residue recovery device comprises a collecting frame 171, a rotating plate 172 and an elastic telescopic plate 173. The collecting frame 171 is fixedly mounted at the bottom of the air intake pipe 1, the rotating plate 172 is rotatably mounted at the bottom of the collecting frame 171, and the elastic telescopic plate 173 is fixedly mounted on the inner wall of the air intake pipe 1 to prevent particulate matter from adhering to the activated carbon plate 12 and affecting the adsorption effect of the activated carbon plate 12 on harmful gases.

[0024] A short rod 174 is fixedly installed at the free end of the elastic telescopic plate 173, a connecting frame 175 is fixedly installed on the inner wall of the collecting frame 171, a rotating plate 176 is rotatably installed on the inner wall of the connecting frame 175, a short plate 177 is fixedly installed on the top of the rotating plate 176, a pull rope 178 is fixedly installed on the top surface of the short plate 177, and one end of the pull rope 178 away from the short plate 177 is fixedly installed on the surface of the short rod 174, and the rotating plate 176 is rotated to allow the particulate matter to effectively enter the collecting frame 171. At the same time, the resetting of the rotating plate 176 can effectively prevent the particulate matter inside the collecting frame 171 from being blown out when the liquid nitrogen exhaust gas enters the air inlet pipe 1, thereby affecting the separation effect of the activated carbon plate 12.

[0025] A torsion spring No. 1 is arranged between the connecting frame 175 and the rotating plate 176 , and the rotating plate 176 is driven to return to its original position by the torsion spring No. 1. A scraper is arranged at the free end of the elastic telescopic plate 173 .

[0026] The anti-accumulation device includes a fixed seat 181, a connecting plate 182, a fixed plate 183, a sliding seat 184 and a push plate 185. The fixed seat 181 is fixedly installed at the bottom of the rotating plate 176, the connecting plate 182 is rotatably installed on the inner wall of the fixed seat 181, the fixed plate 183 is fixedly installed at the bottom of the connecting plate 182, the sliding seat 184 is slidably installed on the inner wall of the collecting frame 171, the fixed plate 183 is rotatably installed on the inner wall of the sliding seat 184, and the push plate 185 is fixedly installed at the bottom of the sliding seat 184. The push plate 185 moves back and forth to flatten the particles that fall into the collecting frame 171 to prevent the particles from accumulating too high and blocking the rotating plate 176, which causes the user to frequently open the rotating plate 172 to discharge the particles inside, causing the equipment to need to be frequently shut down, affecting the separation efficiency.

[0027] A fixed rod 186 is fixedly installed at the bottom of the push plate 185, a connecting slide plate 187 is slidably installed on the top of the rotating plate 172, a rotating block 188 is fixedly installed on the surface of the connecting slide plate 187, and a limiting block 189 is fixedly installed on the surface of the connecting slide plate 187, which is convenient for collecting particulate matter and storing it in the collecting frame 171 to improve the storage effect. At the same time, when the fixed rod 186 is reset, it will push the rotating block 188 to rotate, and the rotation of the rotating block 188 will not hinder the reset of the fixed rod 186, thereby improving the applicability of the equipment.

[0028] A No. 1 spring is arranged between the sliding seat 184 and the collecting frame 171, and the sliding seat 184 is reset by the No. 1 spring. A No. 2 spring is arranged between the rotating plate 172 and the connecting slide 187, and the rotating plate 172 is reset by the No. 2 spring. A No. 2 torsion spring is arranged between the connecting slide 187 and the rotating block 188, and the rotating block 188 is reset by the No. 2 torsion spring. The limit block 189 is in contact with the surface of the rotating block 188.

[0029] When the present embodiment is working, the activated carbon plate 12 moves in a direction away from the motor 7 to contact the free end of the elastic expansion plate 173, and the scraper on the free end of the elastic expansion plate 173 will scrape off the particles attached to the activated carbon plate 12 to prevent the particles from adhering to the activated carbon plate 12 and affecting the adsorption effect of the activated carbon plate 12 on harmful gases. At the same time, the activated carbon plate 12 continues to move in a direction close to the elastic expansion plate 173, which will push the free end of the elastic expansion plate 173 to shrink, so that the elastic expansion plate 173 can contact the activated carbon plate 12 in a short time, thereby increasing the scraping time and the scraping effect. At the same time, the contraction of the free end of the elastic expansion plate 173 will drive the short rod 174 to move in a direction away from the motor 7. The movement of the short rod 174 away from the motor 7 will drive the pull rope 178 to move away from the motor 7. The movement of the pull rope 178 away from the motor 7 will pull the short plate 177 to rotate. The rotation of the short plate 177 will drive the rotating plate 176 to rotate downward. The particles scraped off by the rotating plate 176 when the rotating plate 176 rotates downward enter the collecting frame 171. When the elastic telescopic plate 173 is reset, the No. 1 torsion spring will drive the rotating plate 176 to reset. The rotating plate 176 rotates so that the particles can effectively enter the collecting frame 171. At the same time, the resetting of the rotating plate 176 can effectively prevent the liquid nitrogen exhaust gas from entering the air inlet pipe 1 and blowing out the particles inside the collecting frame 171, thereby affecting the separation effect of the activated carbon plate 12.

[0030] The downward rotation of the rotating plate 176 drives the fixed seat 181 to rotate downward, and the downward rotation of the fixed seat 181 drives the connecting plate 182 to rotate downward, and the downward rotation of the connecting plate 182 drives the fixed plate 183 to rotate downward, and the downward rotation of the fixed plate 183 drives the sliding seat 184 to move in the direction close to the connecting frame 175, and the movement of the sliding seat 184 in the direction close to the connecting frame 175 drives the push plate 185 to move in the direction close to the connecting frame 175, and the particles falling into the collection frame 171 are flattened by the push plate 185 moving back and forth to prevent the particles from piling up too high and blocking the rotating plate 176, so that the user needs to frequently open the rotating plate 172 to discharge the particles inside, resulting in the need for the equipment to be frequently closed, affecting the separation efficiency. At the same time, the movement of the push plate 185 in the direction close to the connecting frame 175 drives the fixed rod 1 86 will move toward the direction close to the connecting frame 175, the fixed rod 186 will move toward the direction close to the connecting frame 175 and contact the rotating block 188, the rotating block 188 is limited by the limit block 189, so that the fixed rod 186 moves toward the direction close to the connecting frame 175, which will push the rotating block 188 to move away from the fixed rod 186, and the rotating block 188 moves in the direction away from the fixed rod 186. The connecting slide 187 moves in the direction away from the fixed rod 186 to loosen the accumulated particles, which is convenient for the particles to be collected and stored in the collecting frame 171, thereby improving the storage effect. At the same time, when the fixed rod 186 is reset, it will push the rotating block 188 to rotate, and the rotation of the rotating block 188 will not hinder the resetting of the fixed rod 186, thereby improving the applicability of the equipment.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly safe liquid nitrogen waste gas condensation and recycling device, characterized in that: include: An air intake pipe (1), wherein a liquid nitrogen tail gas buffer tank pressure regulating valve is arranged on the air intake pipe (1), a liquid nitrogen tail gas buffer tank (2) is fixedly installed on the right side of the air intake pipe (1), an inert gas generator (3) is arranged on the right side of the liquid nitrogen tail gas buffer tank (2), the liquid nitrogen tail gas buffer tank (2) and the inert gas generator (3) are connected via a No. 3 pipeline (31), a sulfur recovery combustion furnace (4) is arranged on the right side of the liquid nitrogen tail gas buffer tank (2), an elevated torch permanent light (5) is arranged on the right side of the liquid nitrogen tail gas buffer tank (2), the liquid nitrogen tail gas buffer tank (2) and the elevated torch permanent light (5) are connected via a No. 1 pipeline (51), and the sulfur recovery combustion furnace (4) and the No. 1 pipeline (51) are connected via a No. 2 pipeline (41); A separation device, the separation device being arranged inside an air intake pipe (1), the separation device comprising a support frame (6), a motor (7), a fan (8), a reciprocating screw rod (9), an elastic telescopic rod (10), a mounting frame (11), an activated carbon plate (12), a threaded block (13), an L-shaped rod (14), a long rod (15) and a ring (16), the support frame (6) being fixedly mounted inside the air intake pipe (1), the motor (7) being fixedly mounted on a surface of the support frame (6), the fan (8) being fixedly mounted on an output end of the motor (7), the reciprocating screw rod (9) being fixedly mounted on a side of the fan (8) away from the motor (7), and the elastic telescopic rod (10) is fixedly mounted on a side of the reciprocating screw rod (9) away from the fan (8), the mounting frame (11) is fixedly mounted on the free end of the elastic telescopic rod (10), the activated carbon plate (12) is fixedly mounted on the inner wall of the mounting frame (11), the threaded block (13) is threadedly mounted on the circumferential surface of the reciprocating screw rod (9), the L-shaped rod (14) is fixedly mounted on the top of the inner wall of the air inlet pipe (1), the L-shaped rod (14) slides through the threaded block (13), the long rod (15) is fixedly mounted on a side of the threaded block (13) away from the motor (7), and the ring (16) is fixedly mounted on a side of the mounting frame (11) close to the elastic telescopic rod (10); Wherein, a waste residue recovery device for recovering waste residue is arranged at the bottom of the air intake pipe (1), and an anti-accumulation device is arranged on the waste residue recovery device.

2. According to claim 1, a highly safe liquid nitrogen waste gas condensation and recovery device is characterized in that: The long rod (15) slides on the inner wall of the circular ring (16), and a burner is arranged inside the inert gas generator (3).

3. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 2 is characterized in that: The waste residue recovery device comprises a collection frame (171), a rotating plate (172) and an elastic telescopic plate (173); the collection frame (171) is fixedly mounted on the bottom of the air intake pipe (1); the rotating plate (172) is rotatably mounted on the bottom of the collection frame (171); and the elastic telescopic plate (173) is fixedly mounted on the inner wall of the air intake pipe (1).

4. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 3 is characterized in that: A short rod (174) is fixedly mounted on the free end of the elastic telescopic plate (173); a connecting frame (175) is fixedly mounted on the inner wall of the collecting frame (171); a rotating plate (176) is rotatably mounted on the inner wall of the connecting frame (175); a short plate (177) is fixedly mounted on the top of the rotating plate (176); a pull rope (178) is fixedly mounted on the top surface of the short plate (177); and one end of the pull rope (178) away from the short plate (177) is fixedly mounted on the surface of the short rod (174).

5. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 4 is characterized in that: A first torsion spring is provided between the connecting frame (175) and the rotating plate (176), and a scraper is provided at the free end of the elastic telescopic plate (173).

6. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 5 is characterized in that: The anti-accumulation device comprises a fixed seat (181), a connecting plate (182), a fixed plate (183), a sliding seat (184) and a push plate (185); the fixed seat (181) is fixedly mounted on the bottom of the rotating plate (176); the connecting plate (182) is rotatably mounted on the inner wall of the fixed seat (181); the fixed plate (183) is fixedly mounted on the bottom of the connecting plate (182); the sliding seat (184) is slidably mounted on the inner wall of the collection frame (171); the fixed plate (183) is rotatably mounted on the inner wall of the sliding seat (184); and the push plate (185) is fixedly mounted on the bottom of the sliding seat (184).

7. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 6 is characterized in that: A fixing rod (186) is fixedly mounted on the bottom of the push plate (185), a connecting slide plate (187) is slidably mounted on the top of the rotating plate (172), a rotating block (188) is fixedly mounted on the surface of the connecting slide plate (187), and a limiting block (189) is fixedly mounted on the surface of the connecting slide plate (187).

8. The highly safe liquid nitrogen waste gas condensation and recycling device according to claim 7 is characterized in that: A No. 1 spring is provided between the sliding seat (184) and the collecting frame (171), a No. 2 spring is provided between the rotating plate (172) and the connecting slide plate (187), a No. 2 torsion spring is provided between the connecting slide plate (187) and the rotating block (188), and the limiting block (189) is in surface contact with the rotating block (188).

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