A nitrogen-purged closed feeding system based on a chemical reactor

Abstract

This invention discloses a nitrogen-purged closed feeding system based on a chemical reactor, relating to the field of closed feeding technology for reactors. In this invention, a pusher cylinder output is connected to a pusher piston, a storage tank is connected to the top of a vertical guide tube, and a receiving cylinder is located inside the vertical guide tube. Multiple receiving chambers are arrayed along the axial direction inside the receiving cylinder, and several receiving ports and discharge ports are opened on the circumferential side of the receiving cylinder. The receiving chambers are connected to their corresponding receiving ports and discharge ports. The receiving ports are positioned close to the top of their respective receiving chambers, and the discharge ports are positioned close to the bottom of their respective receiving chambers and penetrate the receiving cylinder. A nitrogen purging pipe assembly connects a horizontal guide tube to the vertical guide tube, and the pusher piston is slidably positioned inside the horizontal guide tube. This invention not only effectively reduces the possibility of raw materials coming into contact with air during the feeding process but also achieves quantitative feeding of the reaction raw materials, thereby facilitating precise control of the raw material feeding process.

Description

Technical Field

[0001] This invention belongs to the field of closed feeding technology for reaction vessels, and in particular relates to a nitrogen-purged closed feeding system based on a chemical reaction vessel. Background Technology

[0002] During operation, reaction vessels require the addition of reaction materials, which are mostly fine-particle fixed materials. The existing method of feeding reaction vessels is to directly open the feeding channel on the reaction vessel, pour a certain amount of reaction materials into the reaction vessel through the feeding channel, and then close the feeding channel. This feeding method is prone to causing liquid solvents to evaporate during the feeding process, thus polluting the environment.

[0003] To address the issue of liquid solvent evaporation during the feeding process, the existing solution involves installing a feeding pipe between the feeding hopper and the reactor. This feeding pipe is equipped with an upper valve and a lower valve. When the upper valve is opened, the powdered solid reactant material first enters the pre-feeding chamber between the two valves. Then, the upper valve is closed and the lower valve is opened, allowing the material to enter the reactor.

[0004] While the aforementioned dual-valve feeding method solves the problem of liquid solvent evaporation during the feeding process, some raw materials become viscous upon contact with air during feeding, easily adhering to the walls of the feeding pipe, making them difficult to clean and affecting the accuracy of subsequent feeding. Therefore, to reduce the impact of raw material adhesion on feeding accuracy during the feeding process, we provide a nitrogen-purged closed feeding system based on a chemical reactor. Summary of the Invention

[0005] The purpose of this invention is to provide a nitrogen-purged closed feeding system based on a chemical reactor. Through the specific structural design of the feeding control mechanism, the guiding mechanism, the lifting and unloading mechanism, and the dispersing mechanism, the problems of raw material wall adhesion and poor feeding accuracy in the existing dual-valve feeding method are solved.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is a nitrogen-purged closed feeding system based on a chemical reactor, including a feeding control mechanism, wherein the feeding control mechanism includes a pushing cylinder, the output end of which is connected to a pushing piston column; a guiding mechanism disposed on the feeding control mechanism, wherein the guiding mechanism includes a horizontal guiding pipe and a vertical guiding pipe that are interconnected, the top of which is connected to a storage tank; and a lifting and picking mechanism disposed on the guiding mechanism, wherein the lifting and picking mechanism includes a picking cylinder that is slidably disposed within the vertical guiding pipe, the diameter of which is equal to the diameter of the vertical guiding pipe. The diameters are the same; multiple material collection chambers are arranged in an array along the axial direction inside the material collection cylinder, and several material collection ports and discharge ports are opened on the circumferential side of the material collection cylinder. The material collection chambers are connected to the corresponding material collection ports and discharge ports. The material collection ports are set close to the top of the corresponding material collection chamber, and the discharge ports are set close to the bottom of the corresponding material collection chamber and penetrate the material collection cylinder; a nitrogen purging pipe assembly is connected between the horizontal guide pipe and the vertical guide pipe. The pusher piston is slidably set inside the horizontal guide pipe. When the material collection chamber that has completed material collection moves to the corresponding discharge port and is concentrically aligned with the horizontal guide pipe, the raw material in the material collection chamber is purged into the reaction vessel through the nitrogen purging pipe assembly.

[0007] In this embodiment of the invention, the feeding control mechanism further includes a support frame, the pushing cylinder is installed on the outer wall of the support frame, the pushing piston is disposed on the inner side of the support frame, an annular fixing frame for fixing the storage box is installed on the top of the support frame, a material picking control screw is rotatably disposed on the inner side of the support frame, a sprocket is installed on the material picking control screw, and a sprocket is connected to the output end of the power motor installed at the bottom of the support frame. The sprocket and the sprocket are connected by a transmission chain.

[0008] In this embodiment of the invention, the horizontal guide pipe is fixedly installed inside the support frame, and the circumferential side of the vertical guide pipe is provided with a limiting groove communicating with its inner cavity. The circumferential side of the horizontal guide pipe is provided with a hollow through-and-close part communicating with it. The nitrogen purging pipe assembly consists of a purging pipe one, a purging pipe two, and a solenoid valve. The purging end of the purging pipe one is connected to the horizontal guide pipe, and initially the purging end of the purging pipe one is located between the vertical guide pipe and the pusher piston column. The purging pipe two is connected between the purging pipe one and the vertical guide pipe, and initially the purging end of the purging pipe two is connected to the material intake port at the lower material intake chamber. The solenoid valve is installed on the circumferential side of the purging pipe.

[0009] In this embodiment of the invention, the lifting and feeding mechanism further includes a lifting base disposed outside the vertical guide tube. The lifting base slides through the limiting slot and is fixedly connected to the feeding cylinder. The lifting base is sleeved on the feeding control screw and the two are threaded together. The feeding control screw adjusts the number of feeding chambers on the feeding cylinder that are concentrically connected with the horizontal guide tube to precisely control the amount of raw materials added in the reactor.

[0010] In this embodiment of the invention, when the material taking control screw controls the material taking chamber to complete the material taking process and the outlet is concentrically aligned with the horizontal guide pipe, the pushing piston rod reciprocates twice to push the material in the material taking chamber to a position close to the hollow closed part. The material in the horizontal guide pipe and the material hanging on the wall in the material taking chamber are then purged into the reactor by the nitrogen purging pipe assembly.

[0011] In this embodiment of the invention, a sealing disc is rotatably mounted on the top of the storage bin, and a linkage pipe is rotatably mounted on the periphery of the storage bin via a support base. A ring gear is fixedly mounted on the top of the linkage pipe, and a scraper fixed to the sealing disc is slidably fitted against the inner wall of the storage bin. The ring gear meshes with the sealing disc. A vertical drive rod is fixedly mounted on the top of the lifting base. The vertical drive rod is slidably fitted inside the linkage pipe, and a spiral groove is formed on the periphery of the vertical drive rod. A spiral adapter that slidably fits the spiral groove is fixed on the inner wall of the linkage pipe.

[0012] In this embodiment of the invention, a horizontal carrier is fixedly installed on the inner side of the carrier frame, a support frame is fixedly installed on the top of the horizontal carrier, a reset cylinder is installed on the top of the support frame, a pressure monitoring plate is connected to the output end of the reset cylinder, an air storage box located inside the support frame is installed on the top of the horizontal carrier, an air push plate is slidably provided inside the air storage box, and a limiting ring for supporting the air push plate is fixed on the inner wall of the air storage box.

[0013] In this embodiment of the invention, a first linkage rod that slides through the gas storage box is fixed to the top of the air push plate. A sealing plate is tightly slidably fitted inside the hollow sealing part. The sealing plate is fixedly connected to the first linkage rod. A guide port is opened on the surface of the sealing plate, and the guide port is initially misaligned with the horizontal guide pipe. A second linkage rod that slides through the hollow sealing part is fixed to the top of the sealing plate. A positioning plate is fixed to the top of the second linkage rod. A pressure sensor is installed on the top of the positioning plate. A nitrogen supply pipe is connected to the periphery of the gas storage box. A solenoid valve is installed on the nitrogen supply pipe. The first purge pipe is connected to the gas storage box.

[0014] In this embodiment of the invention, the invention further includes a material dispersing mechanism; wherein the material dispersing mechanism includes a mounting frame installed inside the reactor, an arc-shaped material dispersing pipe fixedly installed on the top of the mounting frame, the inner wall of the arc-shaped material dispersing pipe is provided with a plurality of downwardly extending feeding ports, and a connecting pipe penetrating the reactor is connected to the peripheral side of the arc-shaped material dispersing pipe, the connecting pipe being connected to the horizontal material guide pipe by a flange.

[0015] The present invention has the following beneficial effects: 1. When the material inlet corresponding to the lowest material inlet of the material inlet cylinder is just separated from the vertical guide tube and connected to the storage box, the lowest material inlet cylinder is completely inside the raw material pile, so that the material inlet of the lowest material inlet can take material from the inside of the raw material pile. During the process of controlling the material inlet cylinder to descend gradually, the material inlet process inside the raw material pile is achieved in the same way. The material inlet method of this application not only effectively reduces the possibility of the raw material being exposed to air during the material inlet process, but also realizes the quantitative material inlet of the reaction raw material, which is conducive to ensuring the precise control of the raw material feeding process.

[0016] This invention controls the reciprocating motion of the pusher piston twice, pushing the reactant material falling into the horizontal guide tube away from the location of the receiving chamber and close to the hollow closed part. This control method realizes the pre-feeding operation of the reactant material, pushing all the reactant material in the lowest receiving chamber away from the receiving chamber, ensuring that all the reactant material in the receiving chamber enters the horizontal guide tube before air blowing, so as to facilitate the subsequent air blowing process. At the same time, the reciprocating motion of the pusher piston also achieves the wall scraping treatment of the inner wall of the horizontal guide tube, thereby reducing the reaction material adhering to the wall. Since all the reactant material in the receiving chamber is pushed to the set position in the horizontal guide tube, the gas force is more concentrated during the subsequent air blowing, thus ensuring the air blowing feeding effect of the reactant material.

[0017] This invention opens the solenoid valve on purge pipe one, allowing a certain amount of nitrogen gas to enter the horizontal feed pipe and the corresponding feed chamber through purge pipe one and purge pipe two, respectively. Since the feed port of the feed chamber is connected to purge pipe two, the nitrogen gas entering the feed chamber through purge pipe two purges the feed chamber (eliminating the problem of material adhering to the wall). Meanwhile, the nitrogen gas entering the horizontal feed pipe blows the reaction raw materials inside into the reactor for stirring and mixing. During this process, the nitrogen gas further purges the inner wall of the horizontal feed pipe, thus solving the problem of raw material adhering to the wall inside the feed chamber and the horizontal feed pipe, allowing the reaction raw materials that have been collected to be accurately added into the reactor to participate in the reaction.

[0018] In this invention, during nitrogen purging, the reactants entering the connecting pipe through the horizontal feed pipe are dispersed into the arc-shaped distribution pipe. The reactants are then dispersed to different locations in the solvent within the reactor through various circumferentially arranged feed ports to facilitate thorough mixing. Simultaneously, some reactants in the arc-shaped distribution pipe are discharged from both ends into the solvent. This method of material dispersion effectively prevents the reactants from falling into the same location in the solvent during the feeding process, thus avoiding agglomeration and improving the mixing effect of the reactants within the reactor.

[0019] After a certain amount of reaction raw materials are added, the present invention controls the feeding cylinder to move upward to complete the reset. At this time, a certain amount of reaction raw materials are delivered into the reaction vessel. In the actual production process, the specific amount of reaction raw materials added can be controlled by controlling the frequency of the up and down movement of the feeding cylinder (the amount added is an integer multiple of the amount of material taken by the feeding cylinder in one operation). Of course, after the feeding cylinder completes one operation, the amount of raw materials added into the reaction vessel can also be precisely controlled by controlling the number of feeding chambers on the feeding cylinder that are concentrically connected with the horizontal guide pipe. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used 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 those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the nitrogen-purged closed feeding system based on a chemical reactor in this invention.

[0022] Figure 2 for Figure 1 A structural sectional view.

[0023] Figure 3 for Figure 2 Enlarged view of the local structure at point A in the middle.

[0024] Figure 4 for Figure 2 Enlarged view of the local structure at point B.

[0025] Figure 5 This is a schematic diagram of the feeding control mechanism in this invention.

[0026] Figure 6 for Figure 5 A structural side view.

[0027] Figure 7 for Figure 5 A structural sectional view.

[0028] Figure 8 This is a schematic diagram of the material guiding mechanism in this invention.

[0029] Figure 9 This is a cross-sectional view of the lifting and material handling mechanism in this invention.

[0030] Figure 10 This is a schematic diagram of the bulk material handling mechanism in this invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Feeding control mechanism, 101-Pushing cylinder, 102-Pushing piston column, 103-Bearing frame, 104-Annular fixed frame, 105-Material handling control screw, 106-Sprocket one, 107-Power motor, 108-Sprocket two, 109-Transmission chain, 110-Horizontal carrier, 111-Support frame, 112-Reset cylinder, 113-Pressure monitoring plate, 114-Air storage tank, 115-Pneumatic push plate, 116-Limit ring, 117-Blocking plate, 118-Conducting port, 119-Positioning plate, 120-Pressure sensor, 121-Nitrogen supply pipe, 2-Guiding mechanism, 20 1-Horizontal guide pipe, 202-Vertical guide pipe, 203-Storage box, 204-Limiting slot, 205-Hollow closed part, 206-Purge pipe one, 207-Purge pipe two, 208-Solenoid valve, 209-Sealing disc, 210-Linkage pipe, 211-Ring gear, 3-Lifting and picking mechanism, 301-Pickup cylinder, 302-Pickup chamber, 303-Pickup port, 304-Discharge port, 305-Lifting base, 306-Vertical drive rod, 307-Spiral channel, 4-Distribution mechanism, 401-Mounting frame, 402-Arc-shaped distribution pipe, 403-Feeding port, 404-Connecting pipe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] For a specific implementation example, please refer to Implementation Example 1. Figures 1-10This invention relates to a nitrogen-purged closed feeding system based on a chemical reactor, comprising a feeding control mechanism 1, a guiding mechanism 2 disposed on the feeding control mechanism 1, and a lifting and retrieving mechanism 3 disposed on the guiding mechanism 2. The feeding control mechanism 1 includes a pushing cylinder 101, the output end of which is connected to a pushing piston column 102. The guiding mechanism 2 includes a horizontal guiding pipe 201 and a vertical guide pipe 202 connected to each other. A storage tank 203 is connected to the top of the vertical guide pipe 202 for storing granular or powdered raw materials. The lifting and retrieving mechanism 3 includes a retrieving cylinder 301 slidably disposed within the vertical guide pipe 202, the diameter of which is the same as the inner diameter of the vertical guide pipe 202. The retrieving cylinder 301 contains an array of components arranged along its axial direction. Multiple material taking chambers 302 are provided, and several material taking ports 303 and discharge ports 304 are opened on the circumferential side of the material taking cylinder 301. The material taking chambers 302 are connected to the corresponding material taking ports 303 and discharge ports 304. The material taking ports 303 are set close to the top of the corresponding material taking chamber 302, and the discharge ports 304 are set close to the bottom of the corresponding material taking chamber 302 and penetrate through the material taking cylinder 301. A nitrogen purging pipe assembly is provided between the horizontal guide pipe 201 and the vertical guide pipe 202. The pusher piston column 102 is slidably set inside the horizontal guide pipe 201. When the material taking chamber 302 that has completed material taking moves to the corresponding discharge port 304 and is concentrically aligned with the horizontal guide pipe 201, the raw material in the material taking chamber 302 is purged into the reactor through the nitrogen purging pipe assembly. In this way, the raw material input of the reactor during the reaction process can be completed.

[0035] In this embodiment of the invention, such as Figure 5 and Figure 6 As shown, the feeding control mechanism 1 also includes a support frame 103 (which is mounted on an external frame to support the entire feeding control mechanism 1), a pusher cylinder 101 is mounted on the outer wall of the support frame 103, a pusher piston 102 is located inside the support frame 103 and is used to push the raw material falling from the feeding chamber 302 into the horizontal guide pipe 201 closer to the reactor, an annular fixing frame 104 for fixing the storage box 203 is mounted on the top of the support frame 103, and a feeding control screw 105 is rotatably mounted inside the support frame 103 to feed the raw material. A sprocket 106 is mounted on the material control screw 105. A sprocket 2 108 is connected to the output end of the power motor 107 mounted at the bottom of the support frame 103. The sprocket 106 and the sprocket 2 108 are connected by a transmission chain 109 (of course, when there is a large installation space at the bottom of the support frame 103, the motor can be set to directly control the rotation of the material control screw 105. The specific drive method can be adjusted according to the actual production needs). The stable rotation of the material control screw 105 can be achieved through the combined action of the sprocket 106, the sprocket 2 108 and the transmission chain 109.

[0036] In this embodiment of the invention, such as Figure 2 and Figure 8 As shown, the horizontal guide pipe 201 is fixedly installed inside the support frame 103. The vertical guide pipe 202 has a limiting slot 204 communicating with its inner cavity on its peripheral side. The horizontal guide pipe 201 has a hollow through-and-close part 205 communicating with it on its peripheral side. The nitrogen purging pipe assembly consists of a first purging pipe 206, a second purging pipe 207, and a solenoid valve 208. The purging end of the first purging pipe 206 is connected to the horizontal guide pipe 201, and initially, the purging end of the first purging pipe 206 is located between the vertical guide pipe 202 and the pusher piston 102 (e.g., Figure 2 As shown), purge pipe 207 is connected between purge pipe 1 206 and vertical guide tube 202, and initially the purge end of purge pipe 207 is connected to the material inlet 303 at the material inlet 302 below (as shown). Figure 2 As shown), the solenoid valve 208 is installed on the circumferential side of the purge pipe 206. When the lowest material picking chamber 302 moves downward back to its initial position after the material picking is completed (i.e., Figure 2 As shown in the figure, the discharge port 304 at the lowest position of the feeding chamber 302 is concentrically aligned with the horizontal guide pipe 201. At this time, the raw material in the feeding chamber 302 flows from the discharge port 304 into the horizontal guide pipe 201 due to its own fluidity (the property of the granular raw material itself).

[0037] In this embodiment of the invention, such as Figure 1 and Figure 9 As shown, the lifting and material handling mechanism 3 also includes a lifting base 305 disposed outside the vertical guide tube 202. The lifting base 305 slides through the limiting slot 204 and is fixedly connected to the material handling cylinder 301. The lifting base 305 is sleeved on the material handling control screw 105 and the two are threaded together. The setting of the limiting slot 204 can ensure that the lifting base 305 moves smoothly up and down. The material handling control screw 105 adjusts the number of material handling chambers 302 on the material handling cylinder 301 that are concentrically connected to the horizontal guide tube 201 to precisely control the reaction. The amount of raw material added to the reactor should be consistent (the amount of raw material in each of the feeding chambers 302 after feeding is basically the same, so that quantitative feeding can be completed); when the feeding control screw 105 controls the discharge port 304 on the feeding chamber 302 to be concentrically aligned with the horizontal guide pipe 201, the push piston column 102 reciprocates twice to push the raw material in the feeding chamber 302 to be close to the hollow closed part 205. Then, the raw material in the horizontal guide pipe 201 and the wall-mounted raw material in the feeding chamber 302 are purged into the reactor through the nitrogen purging pipe group.

[0038] In the initial state, the discharge port 304 corresponding to the lowest material receiving chamber 302 on the material receiving cylinder 301 is concentrically aligned with the horizontal guide pipe 201, and the material receiving port 303 corresponding to the highest material receiving chamber 302 on the material receiving cylinder 301 is located inside the vertical guide pipe 202. At this time, there is a certain amount of raw material (raw material pile) inside the storage box 203. When the power motor 107 starts and controls the sprocket 108 to rotate, the transmission chain 109 and the sprocket 106 work together to control the material receiving control screw 105 to advance. The rotating mechanism, driven by the threaded engagement between the lifting base 305 and the material handling control screw 105, propels the material handling cylinder 301 upward along the vertical guide tube 202 to a set position. At this point, the material handling port 303 corresponding to the lowest material handling chamber 302 on the material handling cylinder 301 is just detached from the vertical guide tube 202 and connected to the storage tank 203. The entire material handling cylinder 301 extends into the raw material pile inside the storage tank 203, and the reaction raw materials in the storage tank 203 enter the lowest material handling chamber 302 through the material handling port 303 (filling it). After the system-set single-feeding time is reached, the feeding control screw 105 rotates in the reverse direction, driving the feeding cylinder 301 to move down a certain distance (system-set) along the vertical guide tube 202. This causes the feeding port 303 corresponding to the lowest feeding chamber 302 to enter the vertical guide tube 202. At the same time, the feeding port 303 corresponding to the next feeding chamber 302 descends to a position just above the storage tank 203. The reaction raw materials in the storage tank 203 enter the feeding chamber 302 through the feeding port 303 (i.e., from bottom to top). After the system-set single-time material taking time is reached, the material taking control screw 105 continues to rotate in the opposite direction, driving the material taking cylinder 301 to move down the vertical guide tube 202 by the same distance, so that the material taking port 303 corresponding to the next material taking chamber 302 descends to the position that is just connected to the storage box 203 (i.e., the material taking position). In this way, the material taking of each material taking chamber 302 on the material taking cylinder 301 can be realized by following the same material taking method, until the material taking cylinder 301 moves down back to the initial position.

[0039] Part of the reactant material in the lowest receiving chamber 302 of the receiving cylinder 301 enters the horizontal guide pipe 201 through the discharge port 304. The pusher cylinder 101 controls the pusher piston 102 to reciprocate once, pushing the reactant material falling into the horizontal guide pipe 201 away from the receiving chamber 302 and close to the hollow closed part 205. When part of the reactant material is just pushed close to the hollow closed part 205, the lowest receiving chamber 302 is blocked by the pusher piston 102 to prevent further material from falling. After the pusher piston 102 resets, the remaining reactant material in the lowest receiving chamber 302 falls into the horizontal guide pipe 201. The pusher cylinder 101 controls the pusher piston 102 to reciprocate once more to remove this portion of reactant material. The material is pushed to a position close to the hollow closed section 205. The pre-feeding operation of the reaction raw materials is realized through the above control method. All the reaction raw materials in the bottommost feeding chamber 302 can be pushed out of the feeding chamber 302 (to ensure that all the reaction raw materials in the feeding chamber 302 enter the horizontal guide tube 201 before air blowing, so as to facilitate subsequent air blowing treatment). At the same time, the reciprocating motion of the pushing piston column 102 realizes the wall scraping treatment of the inner wall of the horizontal guide tube 201 (similar to the air blowing effect), which achieves the purpose of reducing the reaction raw materials adhering to the wall. Since all the reaction raw materials in the feeding chamber 302 are pushed to the set position in the horizontal guide tube 201, the gas force is more concentrated during subsequent air blowing, thereby ensuring the air blowing feeding effect of the reaction raw materials.

[0040] Then, the solenoid valve 208 on the purge pipe 206 is opened, allowing a certain amount of nitrogen gas to enter the horizontal feed pipe 201 and the lowest material collection chamber 302 through the purge pipe 206 and the purge pipe 207, respectively. Since the material collection port 303 corresponding to the lowest material collection chamber 302 is connected to the purge pipe 207, the nitrogen gas entering the lowest material collection chamber 302 through the purge pipe 207 purges the material collection chamber 302 (eliminating the problem of wall adhesion). Meanwhile, the nitrogen gas entering the horizontal feed pipe 201 blows the reaction raw materials inside into the reactor for stirring and mixing. During this process, the nitrogen gas further purges the inner wall of the horizontal feed pipe 201, thus solving the problem of raw material adhesion inside the material collection chamber 302 and the horizontal feed pipe 201, and ensuring that the reaction raw materials that have been collected can be accurately put into the reactor to participate in the reaction.

[0041] After the system-set single air-blowing time is reached, the solenoid valve 208 on the purge pipe 206 is closed. The material receiving cylinder 301 is then controlled to move downwards so that the outlet 304 of the next material receiving chamber 302 is concentrically aligned with the horizontal guide pipe 201. Following this same control method, the same amount of reaction material can be added to the reactor again. Subsequently, following the same control method, the reaction material from each material receiving chamber 302 that has completed material receiving can be fed into the reactor (the specific amount is determined according to actual needs). After a certain amount of reaction material is completed... After the material is added, the feeding cylinder 301 is moved upward to complete the reset. At this time, a certain amount of reaction raw materials are delivered into the reactor. In the actual production process, the specific amount of reaction raw materials added can be controlled by controlling the frequency of the up and down movement of the feeding cylinder 301 (the amount added is an integer multiple of the amount of material taken by the feeding cylinder 301 in one go). Of course, after the feeding cylinder 301 completes one take-up, the amount of raw materials added in the reactor can also be precisely controlled by controlling the number of feeding chambers 302 on the feeding cylinder 301 that are concentrically connected with the horizontal guide pipe 201.

[0042] Specific embodiment two, based on specific embodiment one, such as Figure 8 and Figure 9 As shown, a sealed disc 209 is rotatably mounted on the top of the storage tank 203 (the sealed disc 209 has a sealed feeding port, which is connected to an external feeding pipe, through which the reaction raw materials are sealed and transported to the storage tank 203, effectively reducing the amount of air entering the storage tank 203; the above-mentioned feeding structure is a conventional setting and is therefore not shown in the figure). A linkage pipe 210 is rotatably mounted on the periphery of the storage tank 203 via a support base, and a ring gear 211 is fixedly mounted on the top of the linkage pipe 210. A scraper fixed to the sealed disc 209 slides against the inner wall of the storage tank 203. The ring gear 211 meshes with the sealed disc 209, thus allowing the reaction materials to be transported to the storage tank 203 in a sealed manner. The rotation of 211 drives the rotation of the sealed disc 209. The scraper that rotates synchronously with the sealed disc 209 reduces the amount of reactant material stuck on the inner wall of the storage box 203. A vertical drive rod 306 is fixed to the top of the lifting base 305. The vertical drive rod 306 is slidably engaged inside the linkage tube 210. A spiral groove 307 is opened on the circumferential side of the vertical drive rod 306. A spiral adapter that slidably engages with the spiral groove 307 is fixed to the inner wall of the linkage tube 210. In this way, when controlling the up and down movement of the lifting base 305, the vertical drive rod 306 drives the linkage tube 210 to rotate, thereby achieving the purpose of synchronous rotation of the ring gear 211 and the sealed disc 209.

[0043] In this embodiment of the invention, such as Figure 5 and Figure 6As shown, a horizontal support frame 110 is fixedly installed on the inner side of the support frame 103 (this horizontal support frame 110 is installed on the reactor to form a support). A support frame 111 is fixedly installed on the top of the horizontal support frame 110. A reset cylinder 112 is installed on the top of the support frame 111. The output end of the reset cylinder 112 is connected to a pressure monitoring plate 113. A gas storage tank 114 (used to store nitrogen) is installed on the top of the horizontal support frame 110, located inside the support frame 111. A gas pusher plate 115 is slidably installed inside the gas storage tank 114. A limiting ring 116 for supporting the gas pusher plate 115 is fixed on the inner wall of the gas storage tank 114. Figure 2 As shown, initially the air-push plate 115 is abutting against the top of the limiting ring 116.

[0044] Furthermore, a linkage rod 1 that slides through the air storage tank 114 is fixed to the top of the air pusher plate 115. A sealing plate 117 is tightly slidably fitted inside the hollow sealing part 205 (this fit prevents the sealing plate 117 and the air pusher plate 115 from moving downwards due to their own gravity; that is, the downward movement of the sealing plate 117 and the air pusher plate 115 requires external force). The sealing plate 117 is fixedly connected to the linkage rod 1, and a conductive opening is provided on the surface of the sealing plate 117. The opening 118 is initially misaligned with the horizontal guide pipe 201 (i.e., the bottom of the initial closing plate 117 is against the bottom of the hollow closing part 205). A second linkage rod is fixed to the top of the closing plate 117, sliding through the hollow closing part 205. A positioning plate 119 is fixed to the top of the linkage rod 119, and a pressure sensor 120 is installed on the top of the positioning plate 119. A nitrogen supply pipe 121 is connected to the periphery of the gas storage tank 114, and a nitrogen supply pipe 121 is installed on the nitrogen supply pipe 121. A solenoid valve 208 and a purge pipe 206 are connected to the gas storage tank 114. When the solenoid valve 208 on the nitrogen supply pipe 121 is opened, nitrogen is delivered to the inside of the gas storage tank 114 through the nitrogen supply pipe 121. The air push plate 115 gradually moves upward under the action of air pressure until the positioning plate 119 abuts against the pressure monitoring plate 113. At this time, the control system receives a pressure signal from the pressure sensor 120. As the nitrogen continues to be input, the air pressure applied to the air push plate 115 increases, and the pressure signal monitored by the pressure sensor 120 gradually increases. When the pressure value received by the control system reaches the set value, it controls the solenoid valve 208 on the nitrogen supply pipe 121 to close. In this way, a certain amount of nitrogen is input into the gas storage tank 114. When the positioning plate 119 abuts against the bottom of the pressure monitoring plate 113, the top of the through-stop plate 117 abuts against the top of the hollow through-stop part 205. At this time, the guide port 118 is concentrically connected with the horizontal guide pipe 201.

[0045] When a certain amount of nitrogen is input into the gas storage tank 114 (nitrogen is an inert gas and will not affect the reaction process), the material taking and feeding operations are initially completed by the combined action of the material taking cylinder 301 and the pusher piston 102. When the reactant material in the material taking chamber 302, which is connected to the horizontal guide pipe 201, is pushed to a position close to the hollow closed part 205, the control system controls the opening of the solenoid valve 208 on the purge pipe 206 for a certain period of time (system setting). The reactant material is purged into the reactor by nitrogen purging. When the set single purging time is reached, the solenoid valve 208 on the purge pipe 206 is closed, and the reactant material in the next material taking chamber 302, which is connected to the horizontal guide pipe 201, is pushed to a position close to the hollow closed part 205. Subsequently, nitrogen purging and feeding are continuously performed according to the same control method. During this process, the closed plate 117 will not slide downward on its own, thus... This ensures that the guide port 118 is always concentrically connected with the horizontal feed pipe 201. After a certain amount of reaction raw material is fed, the solenoid valve 208 on the purge pipe 206 is kept open, allowing the remaining nitrogen in the gas storage tank 114 to continue entering the reactor along the purge path until the monitored pressure value is close to zero (the pressure value is small). Then, the solenoid valve 208 on the purge pipe 206 is closed, and the pressure monitoring plate 113 is moved downward by the reset cylinder 112 to push the positioning plate 119 downward synchronously until the positioning plate 119 and the through-and-close plate 117 are reset. Then, the pressure monitoring plate 113 is moved upward by the reset cylinder 112 to reset. (It should be noted that in this embodiment, one type of reaction raw material can be stored in the storage tank 203. After feeding this type of raw material, another type of raw material can be placed in the storage tank 203 for feeding according to actual production needs.)

[0046] Specific embodiment three, based on specific embodiment two, such as Figure 1 , Figure 2 and Figure 10As shown, the present invention also includes a material dispersing mechanism 4; wherein, the material dispersing mechanism 4 includes a mounting frame 401 installed inside the reactor, an arc-shaped material dispersing pipe 402 fixedly installed on the top of the mounting frame 401, and a plurality of downwardly extending feed ports 403 provided on the inner wall of the arc-shaped material dispersing pipe 402. A connecting pipe 404 penetrating the reactor is connected to the circumferential side of the arc-shaped material dispersing pipe 402, and the connecting pipe 404 is connected to the horizontal guide pipe 201 by a flange; during the nitrogen purging process, the reaction raw materials entering the connecting pipe 404 from the horizontal guide pipe 201 are dispersed into the arc-shaped material dispersing pipe 402. The reaction raw materials are dispersed to different positions of the solvent in the reactor through the circumferentially arranged feed ports 403 to achieve full mixing. At the same time, some of the reaction raw materials in the arc-shaped material dispersing pipe 402 are discharged from the two ends of the arc-shaped material dispersing pipe 402 and fall into the solvent. The above-mentioned material dispersion method effectively avoids the raw materials falling into the same position in the solvent during the feeding process, causing the raw materials to agglomerate, thereby improving the mixing effect of the reaction raw materials in the reactor.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A nitrogen-purged closed feeding system based on a chemical reactor, characterized in that, include: Feeding control mechanism (1), the feeding control mechanism (1) includes a pusher cylinder (101), the output end of the pusher cylinder (101) is connected to a pusher piston column (102); The material guiding mechanism (2) is provided on the feeding control mechanism (1). The material guiding mechanism (2) includes a horizontal material guiding pipe (201) and a vertical guide pipe (202) that are connected to each other. The top of the vertical guide pipe (202) is connected to a storage box (203). The lifting and picking mechanism (3) is provided on the material guiding mechanism (2). The lifting and picking mechanism (3) includes a picking cylinder (301) that is slidably disposed in the vertical guide tube (202). The diameter of the picking cylinder (301) is the same as the inner diameter of the vertical guide tube (202). The material receiving cylinder (301) has multiple material receiving chambers (302) arranged in an array along the axial direction inside. The material receiving cylinder (301) has several material receiving ports (303) and discharge ports (304) on its peripheral side. The material receiving chambers (302) are connected to the corresponding material receiving ports (303) and discharge ports (304). The material receiving ports (303) are located close to the top of the corresponding material receiving chamber (302), and the discharge ports (304) are located close to the bottom of the corresponding material receiving chamber (302) and penetrate through the material receiving cylinder (301). A nitrogen purging pipe assembly is provided between the horizontal feed pipe (201) and the vertical guide pipe (202). The pusher piston (102) is slidably disposed inside the horizontal feed pipe (201). When the feed chamber (302) that has completed the feed collection moves to the corresponding discharge port (304) and is concentrically aligned with the horizontal feed pipe (201), the raw material in the feed chamber (302) is purged into the reactor through the nitrogen purging pipe assembly. The feeding control mechanism (1) also includes a support frame (103), the pushing cylinder (101) is installed on the outer wall of the support frame (103), the pushing piston column (102) is located on the inner side of the support frame (103), the top of the support frame (103) is equipped with an annular fixing frame (104) for fixing the storage box (203), the inner side of the support frame (103) is rotatably equipped with a picking control screw (105), a sprocket one (106) is installed on the picking control screw (105), the output end of the power motor (107) installed at the bottom of the support frame (103) is connected to a sprocket two (108), and the sprocket one (106) and the sprocket two (108) are connected by a transmission chain (109); The horizontal guide tube (201) is fixedly installed inside the bearing frame (103). The vertical guide tube (202) has a limiting slot (204) communicating with its inner cavity on its circumferential side. The horizontal guide tube (201) has a hollow through-and-close part (205) communicating with it on its circumferential side. The nitrogen purging pipe assembly consists of a purging pipe one (206), a purging pipe two (207), and a solenoid valve (208). The purging end of the purging pipe one (206) is connected to the horizontal guide pipe (201), and initially the purging end of the purging pipe one (206) is located between the vertical guide pipe (202) and the pusher piston column (102). The purging pipe two (207) is connected between the purging pipe one (206) and the vertical guide pipe (202), and initially the purging end of the purging pipe two (207) is connected to the feed port (303) at the lower feed chamber (302). The solenoid valve (208) is installed on the circumferential side of the purging pipe one (206). The lifting and feeding mechanism (3) also includes a lifting base (305) set outside the vertical guide tube (202). The lifting base (305) slides through the limiting slot (204) and is fixedly connected to the feeding cylinder (301). The lifting base (305) is sleeved on the feeding control screw (105) and the two are threaded together. The feeding control screw (105) adjusts the number of feeding chambers (302) on the feeding cylinder (301) that are concentrically connected with the horizontal guide tube (201) to precisely control the amount of raw materials added in the reactor.

2. The nitrogen-purged closed feeding system based on a chemical reactor according to claim 1, characterized in that, When the material taking control screw (105) controls the material taking chamber (302) to complete the material taking and the outlet (304) is concentrically aligned with the horizontal guide pipe (201), the pusher piston (102) reciprocates twice to push the material in the material taking chamber (302) to the hollow closed part (205), and the material in the horizontal guide pipe (201) and the material hanging on the wall in the material taking chamber (302) are purged into the reactor through the nitrogen purging pipe group.

3. The nitrogen-purged closed feeding system based on a chemical reactor according to claim 2, characterized in that, The storage bin (203) is rotatably mounted with a sealing disc (209) on its top. The storage bin (203) is rotatably mounted with a linkage pipe (210) via a support seat on its periphery. The linkage pipe (210) is fixedly mounted with a ring gear (211) on its top. The inner wall of the storage bin (203) is slidably fitted with a scraper fixed to the sealing disc (209). The ring gear (211) meshes with the sealing disc (209). The lifting base (305) is fixedly mounted with a vertical drive rod (306) on its top. The vertical drive rod (306) is slidably fitted inside the linkage pipe (210). The vertical drive rod (306) is provided with a spiral groove (307) on its periphery. The inner wall of the linkage pipe (210) is fixed with a spiral adapter that is slidably fitted with the spiral groove (307).

4. The nitrogen-purged closed feeding system based on a chemical reactor according to claim 3, characterized in that, A horizontal carrier frame (110) is fixedly installed on the inner side of the carrier frame (103). A support frame (111) is fixedly installed on the top of the horizontal carrier frame (110). A reset cylinder (112) is installed on the top of the support frame (111). A pressure monitoring plate (113) is connected to the output end of the reset cylinder (112). An air storage box (114) located inside the support frame (111) is installed on the top of the horizontal carrier frame (110). An air push plate (115) is slidably provided inside the air storage box (114). A limiting ring (116) for supporting the air push plate (115) is fixed on the inner wall of the air storage box (114).

5. A nitrogen-purged closed feeding system based on a chemical reactor according to claim 4, characterized in that, The top of the air-push plate (115) is fixed with a first linkage rod that slides through the gas storage box (114). The hollow closed part (205) is tightly fitted with a closed plate (117). The closed plate (117) is fixedly connected to the first linkage rod. The closed plate (117) has a guide port (118) on its surface, and the guide port (118) is initially misaligned with the horizontal guide pipe (201). The top of the closed plate (117) is fixed with a second linkage rod that slides through the hollow closed part (205). The top of the second linkage rod is fixed with a positioning plate (119). The top of the positioning plate (119) is equipped with a pressure sensor (120). The periphery of the gas storage box (114) is connected to a nitrogen supply pipe (121). A solenoid valve (208) is installed on the nitrogen supply pipe (121). The first purge pipe (206) is connected to the gas storage box (114).

6. A nitrogen-purged closed feeding system based on a chemical reactor according to claim 5, characterized in that, It also includes a material distribution mechanism (4); wherein the material distribution mechanism (4) includes a mounting frame (401) installed inside the reactor, an arc-shaped material distribution pipe (402) is fixedly installed on the top of the mounting frame (401), the inner wall of the arc-shaped material distribution pipe (402) is provided with a number of downwardly extending feed ports (403), the periphery of the arc-shaped material distribution pipe (402) is connected to a connecting pipe (404) that penetrates the reactor, and the connecting pipe (404) is connected to the horizontal guide pipe (201) by a flange.

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