Nitrogen purging type closed feeding system based on chemical reaction kettle

Abstract

The invention discloses a nitrogen purging type closed feeding system based on a chemical reaction kettle, and relates to the technical field of closed feeding of reaction kettles. The output end of a material pushing air cylinder is connected with a material pushing piston column, the top of a vertical guide pipe communicates with a material storage box, a material taking barrel is arranged in the vertical guide pipe, a plurality of material taking cavities are formed in the material taking barrel in the axis direction in an array mode, a plurality of material taking openings and discharging openings are formed in the circumferential side face of the material taking barrel, and the material taking cavities communicate with the corresponding material taking openings and discharging openings. The material taking opening is arranged close to the top of the corresponding material taking cavity, the discharging opening is arranged close to the bottom of the corresponding material taking cavity and penetrates through the material taking barrel, a nitrogen purging pipe set is arranged between the horizontal material guiding pipe and the vertical guiding pipe in a communicating mode, and the material pushing piston column is arranged in the horizontal material guiding pipe in a sliding mode. The possibility that the raw materials are in contact with air in the material taking process is effectively reduced, quantitative material taking of the reaction raw materials is achieved, and then accurate control over the raw material feeding process is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of closed feeding of reaction kettles, and particularly relates to a nitrogen purging type closed feeding system based on a chemical reaction kettle. BACKGROUND

[0002] A reaction kettle needs to add reaction raw materials during the working process, and the reaction raw materials needed to be added are mostly fine particle fixed raw materials, and the existing reaction kettle feeding mode is generally to directly open the feeding channel on the reaction kettle, pour a certain amount of reaction raw materials into the reaction kettle through the feeding channel, and then close the feeding channel, which can easily cause liquid solvent to volatilize and pollute the environment during the feeding process.

[0003] In order to solve the problem that liquid solvent volatilizes during the feeding process, the existing solution is to provide a feeding pipeline between the feeding hopper and the reaction kettle, and provide an upper valve and a lower valve on the feeding pipeline, when the upper valve is opened, the powder solid reaction raw material is first introduced into the pre-feeding cavity between the two valves, then the upper valve is closed and the lower valve is opened, so that the raw material can enter the reaction kettle.

[0004] The double-valve feeding mode can solve the problem that liquid solvent volatilizes during the feeding process, but some raw materials will become sticky when they contact with air during the feeding process, which can cause wall hanging in the feeding pipeline, and it is difficult to clean and affects the accuracy of subsequent feeding. Therefore, in order to reduce the influence of raw material wall hanging on the feeding accuracy during the feeding process, the application provides a nitrogen purging type closed feeding system based on a chemical reaction kettle. SUMMARY

[0005] The application aims to provide a nitrogen purging type closed feeding system based on a chemical reaction kettle, which solves the problems of raw material wall hanging and poor feeding accuracy of the existing double-valve feeding mode through the specific structural design of the feeding control mechanism, the material guiding mechanism, the lifting material taking mechanism and the material scattering mechanism.

[0006] To solve the above technical problems, the present application is realized by the following technical scheme: the present application is a nitrogen purging type closed feeding system based on a chemical reaction kettle, comprising a feeding control mechanism, the feeding control mechanism comprises a pushing cylinder, and the pushing cylinder output end is connected with a pushing piston column; a guide mechanism is arranged on the feeding control mechanism, the guide mechanism comprises a horizontal guide pipe and a vertical guide pipe which are in communication with each other, and a storage tank is arranged at the top of the vertical guide pipe; a lifting material taking mechanism is arranged on the guide mechanism, the lifting material taking mechanism comprises a material taking cylinder which is slidingly arranged in the vertical guide pipe, and the diameter of the material taking cylinder is the same as the inner diameter of the vertical guide pipe; a plurality of material taking cavities are arranged in the material taking cylinder along the axial direction, a plurality of material taking openings and a material outlet are formed in the side surface of the material taking cylinder, the material taking cavities are in communication with the corresponding material taking openings and the material outlet, the material taking openings are arranged close to the top of the corresponding material taking cavities, and the material outlet is arranged close to the bottom of the corresponding material taking cavities and penetrates the material taking cylinder; a nitrogen purging pipe group is arranged in communication between the horizontal guide pipe and the vertical guide pipe, and the pushing piston column is slidingly arranged in the horizontal guide pipe; when the material taking cavity which has completed material taking moves to the corresponding material outlet which is concentrically aligned with the horizontal guide pipe, the raw materials in the material taking cavity are purged into the reaction kettle through the nitrogen purging pipe group.

[0007] In the embodiment of the present application, the feeding control mechanism further comprises a bearing frame, the pushing cylinder is mounted on the outer side wall of the bearing frame, the pushing piston column is arranged in the inner side of the bearing frame, an annular fixing frame for fixing the storage tank is mounted on the top of the bearing frame, a material taking control screw is rotationally arranged in the inner side of the bearing frame, a sprocket one is mounted on the material taking control screw, a sprocket two is connected with the output end of a power motor mounted on the bottom of the bearing frame, and the sprocket one and the sprocket two are connected through a transmission chain.

[0008] In the embodiment of the present application, the horizontal guide pipe is fixedly mounted in the inner side of the bearing frame, a limiting notch in communication with the inner cavity of the vertical guide pipe is formed in the side surface of the vertical guide pipe, and a hollow opening and closing part in communication with the horizontal guide pipe is mounted on the side surface of the horizontal guide pipe; the nitrogen purging pipe group is composed of a purging pipe one, a purging pipe two and a solenoid valve, the purging end of the purging pipe one is in communication with the horizontal guide pipe, and the purging end of the purging pipe one is initially located between the vertical guide pipe and the pushing piston column, the purging pipe two is arranged in communication between the purging pipe one and the vertical guide pipe, and the purging end of the purging pipe two is initially in communication with the material taking opening at the lower material taking cavity, and the solenoid valve is mounted on the side surface of the purging pipe one.

[0009] In the embodiment of the present application, the lifting material taking mechanism further comprises a lifting base arranged on the outer side of the vertical guide pipe, the lifting base slidingly penetrates the limiting notch and is fixedly connected with the material taking cylinder, the lifting base is sleeved on the material taking control screw and is threadedly matched with the material taking control screw, and the material taking control screw is used for accurately controlling the amount of raw materials added into the reaction kettle by controlling the number of material taking cavities which are concentrically communicated with the horizontal guide pipe.

[0010] In the embodiment of the present application, when the material taking control screw controls the outlet of the material taking cavity to be concentrically aligned with the horizontal material guide pipe, the push piston column reciprocates twice to push the raw material in the material taking cavity to the hollow pass-through part, and the raw material in the horizontal material guide pipe and the wall-hanging raw material in the material taking cavity are blown into the reaction kettle through the nitrogen blowing pipe group.

[0011] In the embodiment of the present application, the top of the storage tank is rotatably installed with a sealing disc, the lateral surface of the storage tank is rotatably installed with a linkage pipe through a support seat, the top of the linkage pipe is fixedly installed with a ring gear, a scraper fixed with the sealing disc is slidably attached to the inner wall of the storage tank, and the ring gear is engaged with the sealing disc.

[0012] In the embodiment of the present application, the inner side of the bearing rack is fixedly installed with a horizontal carrier, the top of the horizontal carrier is fixedly installed with a support frame, the top of the support frame is installed with a reset air cylinder, the output end of the reset air cylinder is connected with a pressure monitoring plate, the top of the horizontal carrier is installed with a gas storage tank located inside the support frame, a gas pushing disc is slidably arranged in the gas storage tank, and a limiting ring for supporting the gas pushing disc is fixed to the inner wall of the gas storage tank.

[0013] In the embodiment of the present application, the top of the gas pushing disc is fixedly installed with a linkage rod one slidingly penetrating the gas storage tank, the inside of the hollow pass-through part is closely and slidably fitted with a pass-through plate, the pass-through plate is fixedly connected with the linkage rod one, the surface of the pass-through plate is provided with a through opening, and the through opening is initially misaligned with the horizontal material guide pipe, the top of the pass-through plate is fixedly installed with a linkage rod two slidingly penetrating the hollow pass-through part, the top of the linkage rod two is fixedly installed with a positioning disc, the top of the positioning disc is installed with a pressure sensor, the lateral surface of the gas storage tank is continuously provided with a nitrogen supply pipe, the nitrogen supply pipe is installed with a solenoid valve, and the blowing pipe one is continuously arranged with the gas storage tank.

[0014] In the embodiment of the present application, the present application further comprises a bulk material mechanism; wherein the bulk material mechanism comprises a mounting bracket installed inside the reaction kettle, the top of the mounting bracket is fixedly installed with an arc-shaped bulk material pipe, the inner wall of the arc-shaped bulk material pipe is provided with a plurality of inclined downward extending feeding ports, the lateral surface of the arc-shaped bulk material pipe is continuously provided with a connecting pipe penetrating the reaction kettle, and the connecting pipe and the horizontal material guide pipe are connected through flanges.

[0015] The present application has the following beneficial effects: 1, the present application controls the lowermost material taking cavity of the material taking cylinder to communicate with the storage box, and the lowermost material taking cavity is completely inside the raw material pile, so that the lowermost material taking cavity takes material from the inside of the raw material pile, and the same way is realized in the process of gradually lowering the control material taking cylinder, the present application realizes the quantitative taking of the reaction raw material, and further facilitates the precise control of the raw material delivery process.

[0016] The present application controls the reciprocating motion of the pushing piston column twice, and the reaction raw material falling into the horizontal material guide pipe is pushed away from the position of the material taking cavity and close to the hollow opening and closing part, and the pre-delivery operation of the reaction raw material is realized through the control mode, the reaction raw material in the lowermost material taking cavity is pushed away from the material taking cavity, and the reaction raw material in the material taking cavity is ensured to enter the horizontal material guide pipe before air blowing, so as to facilitate the subsequent air blowing treatment, and the wall scraping treatment of the inner wall of the horizontal material guide pipe is realized through the reciprocating motion of the pushing piston column, and the purpose of reducing the wall hanging of the reaction raw material is achieved.

[0017] The present application opens the electromagnetic valve on the blowing pipe one, so that a certain amount of nitrogen enters the horizontal material guide pipe and the corresponding material taking cavity along the blowing pipe one and the blowing pipe two, respectively, since the material taking port corresponding to the material taking cavity is communicated with the blowing pipe two, the nitrogen entering the material taking cavity through the blowing pipe two carries out gas blowing (can eliminate the wall hanging problem) on the material taking cavity, and the nitrogen entering the horizontal material guide pipe blows the reaction raw material in it into the reaction kettle for stirring and mixing, in this process, the nitrogen further realizes the blowing treatment of the inner wall of the horizontal material guide pipe, so as to solve the problem of raw material hanging in the material taking cavity and the horizontal material guide pipe, so that the reaction raw material after taking can be accurately put into the reaction kettle to participate in the reaction.

[0018] In the nitrogen blowing process, the reaction raw material entering the connecting pipe from the horizontal material guide pipe is dispersed into the arc-shaped material dispersing pipe, the reaction raw material is dispersed into different positions of the solvent in the reaction kettle through the circumferentially arranged material feeding ports to facilitate the mixing, and part of the reaction raw material in the arc-shaped material dispersing pipe is discharged from the two ports of the arc-shaped material dispersing pipe and falls into the solvent, so as to effectively avoid the agglomeration of the raw material caused by the raw material falling into the same position of the solvent in the feeding process, and further improve the mixing effect of the reaction raw material in the reaction kettle.

[0019] The present application controls the upward movement of the material taking cylinder to complete the reset after a certain amount of reaction raw material is put in, at this time, the certain amount of reaction raw material is delivered to the reaction kettle, in the actual production process, the specific addition amount of reaction raw material can be controlled by controlling the frequency of the upward and downward movement of the material taking cylinder (the addition amount is an integer multiple of the material taking amount of the material taking cylinder once), of course, the purpose of accurately controlling the addition amount of the raw material in the reaction kettle can also be achieved by controlling the number of the material taking cavities on the material taking cylinder which are concentrically communicated with the horizontal material guide pipe after the material taking cylinder completes the material taking once. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without paying creative labor on the premise of the drawings.

[0021] Figure 1 It is a structural schematic view of the nitrogen purging type closed material feeding system based on the chemical reaction kettle in the present application.

[0022] Figure 2 It is a structural sectional view of Figure 1 .

[0023] Figure 3 It is an enlarged view of the local structure at A in Figure 2 .

[0024] Figure 4 It is an enlarged view of the local structure at B in Figure 2 .

[0025] Figure 5 It is a structural schematic view of the material feeding control mechanism in the present application.

[0026] Figure 6 It is a structural side view of Figure 5 .

[0027] Figure 7 It is a structural sectional view of Figure 5 .

[0028] Figure 8 It is a structural schematic view of the material guide mechanism in the present application.

[0029] Figure 9 It is a structural sectional view of the lifting material taking mechanism in the present application.

[0030] Figure 10 It is a structural schematic view of the bulk material mechanism in the present application.

[0031] In the drawings, the component list represented by each number is as follows: 1-feeding control mechanism, 101-feeding cylinder, 102-feeding piston column, 103-bearing frame, 104-annular fixed frame, 105-feeding control screw, 106-chain wheel one, 107-power motor, 108-chain wheel two, 109-transmission chain, 110-horizontal carrier, 111-support frame, 112-return cylinder, 113-pressure monitoring plate, 114-gas storage tank, 115-gas pushing disc, 116-limiting ring, 117-on-off plate, 118-conducting port, 119-positioning disc, 120-pressure sensor, 121-nitrogen supply pipe, 2-feeding mechanism, 201-horizontal feeding pipe, 202-vertical pipe, 203-storage tank, 204-limiting notch, 205-hollow on-off part, 206-blowing pipe one, 207-blowing pipe two, 208-solenoid valve, 209-sealing disc, 210-linkage pipe, 211-annular gear, 3-lifting feeding mechanism, 301-feeding cylinder, 302-feeding cavity, 303-feeding port, 304-discharging port, 305-lifting base, 306-vertical drive rod, 307-spiral groove, 4-distributing mechanism, 401-mounting frame, 402-arc-shaped distributing pipe, 403-feeding port, 404-connection pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0033] Specific embodiment one, please refer to Figures 1-10The application discloses a nitrogen purging type closed feeding system based on a chemical reaction kettle, which comprises a feeding control mechanism 1, a material guiding mechanism 2 arranged on the feeding control mechanism 1 and a lifting material taking mechanism 3 arranged on the material guiding mechanism 2; the feeding control mechanism 1 comprises a material pushing cylinder 101, and the output end of the material pushing cylinder 101 is connected with a material pushing piston column 102; the material guiding mechanism 2 comprises a horizontal material guiding pipe 201 and a vertical guiding pipe 202 which are communicated with each other, and a storage tank 203 is arranged at the top of the vertical guiding pipe 202 and is communicated with the vertical guiding pipe 202, and the storage tank 203 is used for storing granular raw materials or powder raw materials; the lifting material taking mechanism 3 comprises a material taking cylinder 301 which is slidingly arranged in the vertical guiding pipe 202, and the diameter of the material taking cylinder 301 is the same as the inner diameter of the vertical guiding pipe 202; a plurality of material taking cavities 302 are arranged in the material taking cylinder 301 along the axial direction, a plurality of material taking openings 303 and a material discharging opening 304 are formed in the lateral surface of the material taking cylinder 301, the material taking cavity 302 is communicated with the corresponding material taking opening 303 and the material discharging opening 304, the material taking opening 303 is arranged close to the top of the corresponding material taking cavity 302, and the material discharging opening 304 is arranged close to the bottom of the corresponding material taking cavity 302 and penetrates through the material taking cylinder 301; a nitrogen purging pipe group is arranged between the horizontal material guiding pipe 201 and the vertical guiding pipe 202, and the material pushing piston column 102 is slidingly arranged in the horizontal material guiding pipe 201; when the material taking cavity 302 which has completed material taking moves to the corresponding material discharging opening 304 and is concentrically aligned with the horizontal material guiding pipe 201, the raw materials in the material taking cavity 302 are purged into the reaction kettle through the nitrogen purging pipe group, so that the raw material input of the reaction kettle in the reaction process can be completed.

[0034] In the embodiment of the application, as shown in Figure 5 and Figure 6 the feeding control mechanism 1 further comprises a bearing frame 103 which is mounted on an external frame to support the whole feeding control mechanism 1, the material pushing cylinder 101 is mounted on the outer lateral wall of the bearing frame 103, the material pushing piston column 102 is arranged in the inner side of the bearing frame 103 and is used for pushing the raw materials falling into the horizontal material guiding pipe 201 from the material taking cavity 302 close to the reaction kettle, the annular fixing frame 104 for fixing the storage tank 203 is mounted on the top of the bearing frame 103, the material taking control screw 105 is rotationally arranged in the inner side of the bearing frame 103, the chain wheel one 106 is mounted on the material taking control screw 105, the output end of the power motor 107 mounted on the bottom of the bearing frame 103 is connected with the chain wheel two 108, the chain wheel one 106 and the chain wheel two 108 are connected through the transmission chain 109 (of course, when the mounting space of the bottom of the bearing frame 103 is large, the motor can be directly arranged to control the rotation of the material taking control screw 105, and the specific driving mode can be adjusted according to the actual production needs), and the stable rotation of the material taking control screw 105 can be realized through the joint action of the chain wheel one 106, the chain wheel two 108 and the transmission chain 109.

[0035] In the embodiment of the application, as shown in Figure 2 andFigure 8 As shown, the horizontal material guide pipe 201 is fixedly installed inside the bearing frame 103, the vertical guide pipe 202 is provided with a limiting slot 204 in communication with the inner cavity thereof on the peripheral surface, and the horizontal material guide pipe 201 is provided with a hollow through-closing part 205 in communication therewith on the peripheral surface; the nitrogen purging pipe group is composed 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 in communication with the horizontal material guide pipe 201, and initially the purging end of the purging pipe one 206 is between the vertical guide pipe 202 and the pushing piston column 102 (as shown in Figure 2 As shown), the purging pipe two 207 is in communication with the purging pipe one 206 and the vertical guide pipe 202, and initially the purging end of the purging pipe two 207 is in communication with the material taking port 303 at the lower material taking cavity 302 (as shown in Figure 2 As shown), the solenoid valve 208 is installed on the peripheral surface of the purging pipe one 206, when the lowermost material taking cavity 302 moves downward to the initial position after the material taking is completed (i.e. Figure 2 As shown), the material outlet 304 at the position of the lowermost material taking cavity 302 is concentrically aligned with the horizontal material guide pipe 201, at this time, the raw material in the material taking cavity 302 flows into the horizontal material guide pipe 201 from the material outlet 304 due to the flowability of the raw material itself (the attribute of the granular raw material itself).

[0036] In this embodiment of the present application, as shown in Figure 1 And Figure 9 As shown, the lifting material taking mechanism 3 further comprises a lifting base 305 provided outside the vertical guide pipe 202, the lifting base 305 is slidingly penetrated through the limiting slot 204 and is fixedly connected with the material taking cylinder 301, the lifting base 305 is sleeved on the material taking control screw 105 and is threadedly engaged therewith, the stable upward and downward movement of the lifting base 305 can be ensured by the provision of the limiting slot 204, the material taking control screw 105 is used for accurately controlling the raw material adding amount in the reaction kettle by controlling the number of the material taking cavities 302 on the material taking cylinder 301 which are concentrically communicated with the horizontal material guide pipe 201 (the amount of the raw material in each material taking cavity 302 after the material taking is completed is basically consistent, so that the quantitative material taking can be completed); when the material taking outlet 304 on the material taking cavity 302 controlled by the material taking control screw 105 is concentrically aligned with the horizontal material guide pipe 201, the raw material in the material taking cavity 302 is pushed to be close to the hollow through-closing part 205 by the reciprocating movement of the pushing piston column 102 twice, and then the raw material in the horizontal material guide pipe 201 and the wall-hung raw material in the material taking cavity 302 are blown into the reaction kettle by the nitrogen purging pipe group.

[0037] In the initial state, the lowermost material taking cavity 302 on the material taking cylinder 301 corresponds to the discharge port 304 which is just concentrically aligned with the horizontal material guide pipe 201, and the uppermost material taking cavity 302 on the material taking cylinder 301 corresponds to the material taking port 303 which is just located inside the vertical guide pipe 202, at this time, there is a certain amount of raw material (raw material pile) in the storage box 203, when the power motor 107 controls the sprocket wheel two 108 to rotate, the driving chain 109 and the sprocket wheel one 106 jointly control the material taking control screw 105 to rotate, under the cooperation of the lifting base 305 and the screw thread of the material taking control screw 105, the material taking cylinder 301 moves upwards along the vertical guide pipe 202 to the set position, at this time, the lowermost material taking cavity 302 on the material taking cylinder 301 corresponds to the material taking port 303 which is just separated from the vertical guide pipe 202 and communicates with the storage box 203, the whole material taking cylinder 301 extends into the raw material pile in the storage box 203, the reaction raw material in the storage box 203 enters the lowermost material taking cavity 302 through the material taking port 303 (fills up), after reaching the system set single taking time, the material taking control screw 105 reversely rotates to drive the material taking cylinder 301 to move downwards along the vertical guide pipe 202 by a certain distance (system set), so that the material taking port 303 corresponding to the lowermost material taking cavity 302 enters the vertical guide pipe 202, and the material taking port 303 corresponding to the next material taking cavity 302 drops to the position which is just communicated with the storage box 203, the reaction raw material in the storage box 203 enters the material taking cavity 302 through the material taking port 303 (i.e. the second material taking cavity 302 from bottom to top), after reaching the system set single taking time, the material taking control screw 105 continues to reversely rotate to drive the material taking cylinder 301 to move downwards along the vertical guide pipe 202 by the same distance, and the material taking port 303 corresponding to the next material taking cavity 302 drops to the position which is just communicated with the storage box 203 (i.e. the material taking position), so as to realize the material taking of each material taking cavity 302 on the material taking cylinder 301 according to the same material taking mode, until the material taking cylinder 301 moves downwards to the initial position.

[0038] The part of the reaction raw material in the lowermost material taking cavity 302 on the material taking cylinder 301 enters into the horizontal material guiding pipe 201 along the discharge port 304, and the pusher piston column 102 is controlled to reciprocate once by the pusher cylinder 101 to push the reaction raw material falling into the horizontal material guiding pipe 201 away from the position of the material taking cavity 302 and close to the hollow pass-through part 205, and when the part of the reaction raw material is just pushed to close to the hollow pass-through part 205, the lowermost material taking cavity 302 is blocked by the pusher piston column 102 to avoid continuous feeding, and after the pusher piston column 102 resets, the remaining reaction raw material in the lowermost material taking cavity 302 falls into the horizontal material guiding pipe 201, and the pusher piston column 102 is controlled to reciprocate once by the pusher cylinder 101 to push the part of the reaction raw material to close to the hollow pass-through part 205, and the above control mode realizes the pre-feeding operation of the reaction raw material, and the reaction raw material in the lowermost material taking cavity 302 can be pushed away from the material taking cavity 302 (to ensure that the reaction raw material in the material taking cavity 302 enters into the horizontal material guiding pipe 201 before gas blowing, so as to facilitate the subsequent gas blowing treatment), and the reciprocating movement of the pusher piston column 102 realizes the wall scraping treatment of the inner wall of the horizontal material guiding pipe 201 (similar to the gas blowing effect), which reduces the wall sticking of the reaction raw material. Since the reaction raw material in the material taking cavity 302 is pushed to the set position in the horizontal material guiding pipe 201, the gas blowing force is more concentrated during the subsequent gas blowing, so as to ensure the gas blowing feeding effect of the reaction raw material.

[0039] Subsequently, the electromagnetic valve 208 on the blowing pipe one 206 is opened, and a certain amount of nitrogen gas enters into the horizontal material guiding pipe 201 and the lowermost material taking cavity 302 along the blowing pipe one 206 and the blowing pipe two 207 respectively. Since the material taking port 303 corresponding to the lowermost material taking cavity 302 is communicated with the blowing pipe two 207, the nitrogen gas entering into the lowermost material taking cavity 302 through the blowing pipe two 207 blows the gas to the material taking cavity 302 (which can eliminate the wall sticking problem), and the nitrogen gas entering into the horizontal material guiding pipe 201 blows the reaction raw material in the horizontal material guiding pipe 201 into the reaction kettle for stirring and mixing. In this process, the nitrogen gas further realizes the blowing treatment of the inner wall of the horizontal material guiding pipe 201, so as to solve the wall sticking problem of the material taking cavity 302 and the horizontal material guiding pipe 201, and the reaction raw material after taking can be accurately fed into the reaction kettle to participate in the reaction.

[0040] After reaching the system set single time blowing time, the electromagnetic valve 208 on the blowing pipe 206 is controlled to be closed, the movement of the material taking cylinder 301 is continuously controlled to make the next material taking cavity 302 corresponding to the discharge port 304 just concentrically align with the horizontal material guide pipe 201, then the same amount of reaction raw materials can be put into the reaction kettle again according to the same control mode, the reaction raw materials in the material taking cavity 302 can be delivered to the reaction kettle according to the same control mode (the specific delivery amount is determined according to actual needs), and after a certain amount of reaction raw materials is put, the material taking cylinder 301 is controlled to move upward to complete the reset, at this time, a certain amount of reaction raw materials is delivered to the reaction kettle, and in the actual production process, the specific addition amount of reaction raw materials can be controlled by controlling the frequency of the upward and downward movement of the material taking cylinder 301 (the addition amount is an integer multiple of the material taking amount of the material taking cylinder 301), and of course, the purpose of accurately controlling the amount of raw materials added into the reaction kettle can be achieved by controlling the number of material taking cavities 302 on the material taking cylinder 301 which are concentrically connected with the horizontal material guide pipe 201 after the material taking cylinder 301 completes one material taking.

[0041] In the specific embodiment two, based on the specific embodiment one, as shown in Figure 8 and Figure 9 The top of the storage tank 203 is rotatably provided with a sealing disc 209 (a sealing feeding port is arranged on the sealing disc 209, the sealing feeding port is connected with an external feeding pipeline, reaction raw materials are sealedly delivered into the storage tank 203 through the feeding pipeline, air entering the storage tank 203 can be effectively reduced, and the above-mentioned feeding structure belongs to a conventional arrangement, so it is not shown in the figure), the periphery of the storage tank 203 is rotatably provided with a linkage pipe 210 through a support seat, the top of the linkage pipe 210 is fixedly provided with an annular gear 211, a scraper which is fixed with the sealing disc 209 is slidably attached to the inner wall of the storage tank 203, the annular gear 211 is engaged with the sealing disc 209, so that the rotation of the annular gear 211 can drive the rotation of the sealing disc 209, and the scraper which rotates synchronously with the sealing disc 209 can reduce the wall hanging of the reaction raw materials on the inner wall of the storage tank 203; the top of the lifting base 305 is fixedly provided with a vertical driving rotating rod 306 which is slidably fitted in the linkage pipe 210, the periphery of the vertical driving rotating rod 306 is provided with a spiral groove 307, and the inner wall of the linkage pipe 210 is fixedly provided with a spiral adapter which is slidably fitted with the spiral groove 307, so that the linkage pipe 210 can be rotated by the vertical driving rotating rod 306 during the upward and downward movement of the lifting base 305, thereby achieving the synchronous rotation of the annular gear 211 and the sealing disc 209.

[0042] In the embodiment of the present application, as shown in Figure 5 and Figure 6As shown, the horizontal carrier 110 is fixedly installed inside the bearing frame 103 (the horizontal carrier 110 is installed on the reaction kettle to form a support), a support frame 111 is fixedly installed on the top of the horizontal carrier 110, a reset air 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 air cylinder 112, a gas storage tank 114 (for storing nitrogen) is installed on the inside of the support frame 111 on the top of the horizontal carrier 110, a gas pushing disc 115 is slidably arranged inside the gas storage tank 114, and a limiting ring 116 for supporting the gas pushing disc 115 is fixedly arranged on the inner wall of the gas storage tank 114, as shown. Figure 2 As shown, the gas pushing disc 115 is initially abutted against the top of the limiting ring 116.

[0043] Further, the gas pushing disc 115 is fixedly provided with a linkage rod one slidingly penetrating the gas storage tank 114, a closing plate 117 is tightly and slidably fitted in the hollow closing part 205 (through the fitting relationship, the closing plate 117 and the gas pushing disc 115 cannot move downward by themselves due to gravity, that is, the downward movement of the closing plate 117 and the gas pushing disc 115 needs to rely on external force), the closing plate 117 is fixedly connected with the linkage rod one, a through opening 118 is formed on the surface of the closing plate 117 and the through opening 118 is initially misaligned with the horizontal material guide pipe 201 (that is, the bottom of the closing plate 117 is initially abutted against the inner bottom of the hollow closing part 205), the closing plate 117 is fixedly provided with a linkage rod two slidingly penetrating the hollow closing part 205, a positioning disc 119 is fixedly arranged on the top of the linkage rod two, a pressure sensor 120 is installed on the top of the positioning disc 119, a nitrogen supply pipe 121 is communicated on the side surface of the gas storage tank 114, an electromagnetic valve 208 is installed on the nitrogen supply pipe 121, and a purge pipe one 206 is arranged in communication with the gas storage tank 114; when the electromagnetic 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 gas pushing disc 115 gradually moves upward under the action of the gas pressure until the positioning disc 119 abuts against the pressure monitoring plate 113, at this time the control system receives the pressure signal from the pressure sensor 120, the pressure signal monitored by the pressure sensor 120 gradually increases as the nitrogen continues to be input to exert a greater gas pressure on the gas pushing disc 115, when the pressure value received by the control system reaches the set value, the electromagnetic valve 208 on the nitrogen supply pipe 121 is controlled to be closed, thus completing the input of a certain amount of nitrogen in the gas storage tank 114, when the positioning disc 119 abuts against the bottom of the pressure monitoring plate 113, the top of the closing plate 117 abuts against the inner top of the hollow closing part 205, at this time the through opening 118 realizes concentric communication with the horizontal material guide pipe 201.

[0044] When a certain amount of nitrogen gas in the gas storage tank 114 is input (nitrogen gas is an inert gas that does not affect the reaction process), the material taking and feeding operation is started by the cooperation of the material taking cylinder 301 and the pushing piston column 102. When the reaction raw material in the material taking cavity 302 communicated with the horizontal material guide pipe 201 is pushed to the position close to the hollow through-closed part 205, the control system controls the electromagnetic valve 208 on the blowing pipe one 206 to be opened for a certain time (system setting), and the reaction raw material is blown into the reaction kettle by nitrogen gas blowing. When the set single blowing time is reached, the electromagnetic valve 208 on the blowing pipe one 206 is controlled to be closed, and the reaction raw material in the next material taking cavity 302 communicated with the horizontal material guide pipe 201 is pushed to the position close to the hollow through-closed part 205. Then, the nitrogen gas blowing feeding is continuously carried out in the same control mode as described above. In this process, the through-closed plate 117 will not slide downward by itself, so as to ensure that the through-opening 118 is always concentrically communicated with the horizontal material guide pipe 201. After a certain amount of reaction raw material is fed, the electromagnetic valve 208 on the blowing pipe one 206 is kept in the open state, so that the remaining nitrogen gas in the gas storage tank 114 continues to enter the reaction kettle along the blowing path until the monitored pressure value approaches zero (small pressure value). Then, the electromagnetic valve 208 on the blowing pipe one 206 is controlled to be closed, and the pressure monitoring plate 113 is controlled to move downward by the reset air cylinder 112 to push the positioning disc 119 to move downward synchronously until the positioning disc 119 and the through-closed plate 117 are reset. Then, the pressure monitoring plate 113 is controlled to move upward by the reset air cylinder 112 (it should be noted that in this embodiment, one kind of reaction raw material can be stored in the storage tank 203. After the feeding of this kind of raw material is completed, another kind of raw material can be placed in the storage tank 203 for feeding according to the actual production needs).

[0045] In a specific embodiment three, on the basis of the specific embodiment two, as Figure 1 , Figure 2 and Figure 10As shown, the present application further comprises a bulk material mechanism 4; wherein the bulk material mechanism 4 comprises a mounting frame 401 mounted in the interior of the reaction kettle, an arc-shaped bulk material pipe 402 is fixedly mounted on the top of the mounting frame 401, a plurality of downwardly inclined feeding ports 403 are arranged on the inner wall of the arc-shaped bulk material pipe 402, a connecting pipe 404 penetrating through the reaction kettle is arranged on the side surface of the arc-shaped bulk material pipe 402 in communication, and the connecting pipe 404 is connected with the horizontal material guide pipe 201 through flanges; during the nitrogen purging process, the reaction materials entering into the connecting pipe 404 from the horizontal material guide pipe 201 are dispersed into the arc-shaped bulk material pipe 402, the reaction materials are dispersed into different positions of the solvent in the reaction kettle through the circumferentially arranged feeding ports 403 so as to realize the full mixing, and meanwhile, part of the reaction materials in the arc-shaped bulk material pipe 402 are discharged from the two ends of the arc-shaped bulk material pipe 402 and fall into the solvent, so that the above-mentioned material dispersion mode effectively avoids the agglomeration of the materials due to the falling of the materials into the same position of the solvent during the feeding process, and further improves the mixing effect of the reaction materials in the reaction kettle.

[0046] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above disclosed preferred embodiments of the present application are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A nitrogen purging type closed feeding system based on a chemical reaction kettle, characterized in that, The utility model relates to a kind of material feeding control mechanism and the material feeding control mechanism is used to the material feeding control mechanism of reaction kettle. Including: Material feeding control mechanism (1), the material feeding control mechanism (1) includes push material cylinder (101), and push material cylinder (101) output end is connected with push material piston post (102); Material guide mechanism (2) is arranged on material feeding control mechanism (1), and the material guide mechanism (2) includes horizontal material guide pipe (201) and vertical guide pipe (202) that are communicated with each other, and the vertical guide pipe (202) top is communicated and is equipped with storage tank (203); Lifting material taking mechanism (3) is arranged on material guide mechanism (2), and the lifting material taking mechanism (3) includes material taking cylinder (301) slidingly arranged in vertical guide pipe (202), and the diameter of material taking cylinder (301) is same with the inner diameter of vertical guide pipe (202); Multiple material taking cavities (302) are arranged in the axial direction inside material taking cylinder (301), and a plurality of material taking ports (303) and discharge ports (304) are formed in the circumferential surface of material taking cylinder (301), the material taking cavity (302) is communicated with corresponding material taking port (303) and discharge port (304), the material taking port (303) is close to the top of corresponding material taking cavity (302) and is arranged, the discharge port (304) is close to the bottom of corresponding material taking cavity (302) and is arranged and it penetrates material taking cylinder (301); 2. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 1, characterized in that, Nitrogen purging pipe group is arranged between horizontal material guide pipe (201) and vertical guide pipe (202), and push material piston post (102) is slidingly arranged in horizontal material guide pipe (201), when the material taking cavity (302) that completes material taking moves to corresponding discharge port (304) concentrically aligns horizontal material guide pipe (201), the raw material in material taking cavity (302) is purged into reaction kettle by nitrogen purging pipe group.

3. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 2, characterized in that, The material feeding control mechanism (1) further includes a bearing frame (103), the push material cylinder (101) is installed on the outer side wall of the bearing frame (103), the push material piston post (102) is arranged in the inner side of the bearing frame (103), the annular fixing frame (104) for fixing the storage tank (203) is installed on the top of the bearing frame (103), the material taking control screw (105) is rotatably arranged in the inner side of the bearing frame (103), the chain wheel one (106) is installed on the material taking control screw (105), the power motor (107) is installed at the bottom of the bearing frame (103), and the chain wheel two (108) is connected to the output end of the power motor (107), and the chain wheel one (106) and the chain wheel two (108) are connected by transmission chain (109). Horizontal material guide pipe (201) is fixedly installed in the inner side of bearing frame (103), and limiting notch (204) communicated with its inner cavity is formed in the circumferential surface of vertical guide pipe (202), and hollow on-off part (205) communicated with horizontal material guide pipe (201) is installed on the circumferential surface of horizontal material guide pipe (201).

4. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 3, characterized in that, The nitrogen purging pipe group is composed of purging pipe one (206), purging pipe two (207) and electromagnetic valve (208), the purging end of purging pipe one (206) is communicated with horizontal material guide pipe (201), and the purging end of purging pipe one (206) is initially between vertical guide pipe (202) and pushing piston column (102), purging pipe two (207) is communicated and arranged between purging pipe one (206) and vertical guide pipe (202), and the purging end of purging pipe two (207) is communicated with material taking port (303) at the lower material taking cavity (302) initially, and electromagnetic valve (208) is installed on the side surface of purging pipe one (206).

5. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 3, characterized in that, The lifting material taking mechanism (3) further comprises lifting base (305) arranged outside vertical guide pipe (202), lifting base (305) is slidably penetrated through limiting slot (204) and is fixedly connected with material taking cylinder (301), lifting base (305) is sleeved on material taking control screw (105) and is threadedly connected with material taking control screw (105), material taking control screw (105) is used for accurately controlling the amount of raw materials added in the reaction kettle by controlling the number of material taking cavities (302) on material taking cylinder (301) which are concentrically communicated with horizontal material guide pipe (201).

6. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 3, characterized in that, When the material taking port (304) on the material taking cavity (302) controlled by material taking control screw (105) is concentrically aligned with horizontal material guide pipe (201), the raw materials in the material taking cavity (302) are pushed to be close to hollow opening and closing part (205) by reciprocating movement of pushing piston column (102) twice, and the raw materials in horizontal material guide pipe (201) and the wall-hanging raw materials in material taking cavity (302) are blown into the reaction kettle by nitrogen purging pipe group.

7. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 5, characterized in that, The top of storage tank (203) is rotationally installed with sealing disc (209), the side surface of storage tank (203) is rotationally installed with linkage pipe (210) through support seat, the top of linkage pipe (210) is fixedly installed with ring gear (211), the inner wall of storage tank (203) is slidably matched with scraper fixed with sealing disc (209), and ring gear (211) is engaged with sealing disc (209); the top of lifting base (305) is fixed with vertical driving rotating rod (306), vertical driving rotating rod (306) is slidably matched in linkage pipe (210), the side surface of vertical driving rotating rod (306) is provided with spiral groove (307), and the inner wall of linkage pipe (210) is fixedly provided with spiral adapter matched with spiral groove (307).

8. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 4, characterized in that, The horizontal carrier (110) is fixedly installed in the bearing frame (103), the support frame (111) is fixedly installed on the top of the horizontal carrier (110), the reset air cylinder (112) is installed on the top of the support frame (111), the pressure monitoring plate (113) is connected to the output end of the reset air cylinder (112), the gas storage tank (114) is installed on the top of the horizontal carrier (110) and located in the support frame (111), the gas pushing disc (115) is slidably arranged in the gas storage tank (114), and the limiting ring (116) for supporting the gas pushing disc (115) is fixed on the inner wall of the gas storage tank (114).

9. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 8, characterized in that, The linkage rod one is fixed on the top of the gas pushing disc (115) and penetrates the gas storage tank (114), the closing plate (117) is tightly and slidably matched in the hollow closing part (205), the closing plate (117) is fixedly connected with the linkage rod one, the through opening (118) is formed in the surface of the closing plate (117), the through opening (118) is located in the horizontal material guide pipe (201) at the beginning, the linkage rod two is fixed on the top of the closing plate (117) and penetrates the hollow closing part (205), the positioning disc (119) is fixed on the top of the linkage rod two, the pressure sensor (120) is installed on the top of the positioning disc (119), the nitrogen supply pipe (121) is in communication with the side surface of the gas storage tank (114), the electromagnetic valve (208) is installed on the nitrogen supply pipe (121), and the purge pipe one (206) is in communication with the gas storage tank (114).

10. The nitrogen purging type closed feeding system based on the chemical reaction kettle according to claim 1, characterized in that, It also includes a bulk material mechanism (4); wherein the bulk material mechanism (4) includes a mounting frame (401) mounted inside the reaction kettle, the arc-shaped bulk material pipe (402) is fixedly installed on the top of the mounting frame (401), a plurality of inclined downward extending feeding ports (403) are arranged on the inner wall of the arc-shaped bulk material pipe (402), the connecting pipe (404) penetrating the reaction kettle is in communication with the side surface of the arc-shaped bulk material pipe (402), and the connecting pipe (404) and the horizontal material guide pipe (201) are connected through flanges.

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