Adipic acid automatic feeding and conveying system

Abstract

The present invention discloses an automatic feeding and conveying system for adipic acid, and relates to the technical field of adipic acid feeding, including: a quantitative tank, in which a quantitative component is arranged; a feeding component, in communication with the quantitative tank; a pipe body, a connecting seat and a shell, wherein the pipe body, the connecting seat and the shell are all arranged at the bottom of the quantitative tank, the pipe body is in communication with the connecting seat, and the connecting seat is in communication with the shell. The present invention can seal the pipe body and the connecting seat through a partition to prevent high-humidity gas in the reactor from entering the pipe body through the connecting seat. After the feeding is completed, the pusher seat can collide with the partition by adjusting the component. After the pusher seat and the partition collide, the high-humidity gas between the pusher seat and the partition is discharged, so as to ensure that the adipic acid in the pipe body and the quantitative tank is in a dry environment during the entire feeding process.

Description

Technical Field

[0001] The invention relates to the technical field of adipic acid feeding, in particular to an automatic adipic acid feeding and conveying system. Background Art

[0002] When preparing polyester polyols, one of the steps is to esterify and polycondense the polyols with dibasic acids (phthalic acid, adipic acid, etc.) at 140-200°C. Among them, aliphatic polyester polyols are mainly based on adipic acid, which are used in leather, shoe adhesives, etc. During the preparation of polyester polyols, since there is water in the reaction product and the reaction temperature is high, the gas humidity in the reactor is high, and adipic acid becomes viscous after absorbing water. Compared with the powdered adipic acid material in the normal state, the adipic acid that becomes viscous after absorbing water is not conducive to the subsequent feeding work.

[0003] The Chinese patent with announcement number CN206232641U discloses a polyester polyol reactor adipic acid feeding anti-dust funnel device, including a top opening, a cylinder, a baffle, a vibrator and a bottom opening; the cylinder is installed vertically, the baffle is installed on the inner wall of the cylinder, the rear edge of the baffle is fixed on the inner wall of the cylinder, the front edge of the baffle is inclined downward, the vibrator is installed on the cylinder, the top opening is installed at the upper end of the cylinder, the bottom opening is installed at the lower end of the cylinder, and the inner diameter of the top opening is larger than the bottom opening.

[0004] In this technical solution, although the funnel structure can avoid dust during the feeding process of adipic acid and reduce the consumption of adipic acid, during the feeding process, the high-pressure and high-humidity gas inside the reactor enters the device. Therefore, the adipic acid will adhere to the inner wall of the device after absorbing moisture. As the working time increases, the device will still cause waste of adipic acid. In addition, it will also lead to a decrease in the accuracy of the input amount of adipic acid. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic feeding and conveying system for adipic acid to solve the technical problems in the prior art.

[0006] The present invention provides an automatic feeding and conveying system for adipic acid, comprising:

[0007] Dosing tank;

[0008] A feeding assembly, the feeding assembly is connected to a quantitative tank;

[0009] A tube body, a connecting seat and a shell, wherein the tube body, the connecting seat and the shell are all arranged at the bottom of the quantitative tank, the tube body is connected to the connecting seat, and the connecting seat is connected to the shell;

[0010] A feed pipe, the top of which passes through the inner wall of the bottom of the quantitative tank, and the bottom of which is connected to the pipe body;

[0011] A feeding pipe, which is arranged through the bottom of the connecting seat and is used to feed adipic acid into the reactor;

[0012] A material pushing seat, which is slidably arranged in the tube body and is adapted to the connecting seat and the shell;

[0013] A partition, which is slidably disposed in the tube body and is adapted to the connecting seat and the shell;

[0014] An adjusting component, which is arranged on one side of the partition and connected to the material pushing seat, and is used to adjust the distance between the partition and the material pushing seat;

[0015] A purge assembly is arranged at the end of the shell and penetrates the inner wall of the connecting seat. The purge assembly is used to clean the surface of the pusher seat. The purge assembly and the partition form a transmission fit.

[0016] Preferably, the adjustment component comprises:

[0017] A second sleeve, the second sleeve is fixed on the side wall of the partition, and a second piston is slidably arranged in the second sleeve;

[0018] A second rod, wherein the second rod is fixed to the second piston, and an end of the second rod is fixed to the material pushing seat, and the second rod is slidably connected to the partition plate;

[0019] An oil tank, the oil tank is fixed to the end of the housing and is filled with hydraulic oil;

[0020] a third solenoid valve, the third solenoid valve being passed through and fixed to the end of the second sleeve;

[0021] An oil delivery pipe, one end of which is connected to the oil tank, and the other end of which is connected to the third solenoid valve.

[0022] Preferably, the purge assembly comprises:

[0023] A first sleeve, wherein the first sleeve is fixed to an end of the housing, and a first piston is slidably disposed in the first sleeve;

[0024] A first set of rods, wherein the first set of rods is fixed to the first piston, and an end of the first set of rods is fixed to the partition plate;

[0025] A one-way valve, the one-way valve is arranged through the end of the first sleeve, the one-way valve is fixedly connected to an exhaust pipe, and the exhaust pipe is connected to the exhaust port of the reactor;

[0026] A plurality of nozzles, wherein the plurality of nozzles are all disposed through the inner wall of the top of the connecting seat, and the plurality of nozzles are distributed in an arc shape, and the bottom ends of the plurality of nozzles are flush with the inner wall of the connecting seat;

[0027] An arc-shaped tube, the arc-shaped tube being connected to a plurality of nozzles;

[0028] The second solenoid valve is arranged through the end of the first sleeve, the second solenoid valve is fixedly connected with a connecting pipe, and the connecting pipe is connected with the arc pipe.

[0029] Preferably, a bracket is fixed to the side wall of the quantitative tank, a hydraulic push rod is arranged on the bracket, and the telescopic end of the hydraulic push rod is fixed to the pushing seat, and a first solenoid valve is penetrated through the side wall of the pushing seat.

[0030] Preferably, the feeding assembly comprises:

[0031] A material box, which is arranged below the quantitative tank, a cover body is hingedly connected to the top of the material box, and an output pipe is penetrated through the top of the cover body;

[0032] A feeding pipe, one end of which passes through the inner wall of the bottom of the quantitative tank, and the other end of which is connected to the material box;

[0033] A net cylinder, wherein the net cylinder is fixed on the inner wall of the top of the quantitative tank;

[0034] An input pipe, which is fixed on the top of the quantitative tank and is connected to the net cylinder;

[0035] An air pump box is fixed on the top of the quantitative tank. An air pump is arranged in the air pump box. The output port of the air pump is connected to the output pipe, and the input port of the air pump is connected to the input pipe.

[0036] Preferably, a quantitative component is provided in the quantitative tank, and the quantitative component includes:

[0037] An adjusting tube, wherein the adjusting tube is sleeved on the feeding tube, a plurality of first mounting holes are opened at the bottom of the adjusting tube, and a second magnet is fixed in each of the first mounting holes;

[0038] A fixing frame, the fixing frame is fixed on the top of the regulating tube, and a plurality of vortex plates distributed at equal distances are fixed on the bottom of the fixing frame;

[0039] A prism, wherein the prism is slidably inserted on the top of the fixing frame, and the prism is rotatably arranged on the inner wall of the top of the quantitative tank;

[0040] The motor is fixed on the top of the quantitative tank, and the output shaft of the motor is fixed to the prism.

[0041] Preferably, it also includes:

[0042] A connecting frame, the connecting frame is rotatably connected to the fixing frame;

[0043] Two electric push rods are fixed on the top of the quantitative tank, and the telescopic ends of the two electric push rods are fixed to the connecting frame.

[0044] Preferably, it also includes:

[0045] An annular seat is rotatably arranged on the inner wall of the bottom of the quantitative tank, and a plurality of equally spaced push plates are arranged on the side wall of the annular seat, each of the push plates is a "V"-shaped structure, and a plurality of second mounting holes are opened on the top of the annular seat, and a first magnet is fixed in each of the second mounting holes.

[0046] Compared with the prior art, the beneficial effects of the present invention are:

[0047] (1) The present invention can achieve that during the process of adipic acid in the quantitative tank entering the tube body through the feed pipe, the tube body and the connecting seat are sealed by the partition to prevent high-humidity gas in the reactor from entering the tube body through the connecting seat, thereby ensuring the dryness of the adipic acid in the tube body and the dryness of the adipic acid in the quantitative tank. After the feeding is completed, the pusher seat is allowed to contact the partition through the adjustment component. After the pusher seat and the partition contact, the high-humidity gas between the pusher seat and the partition is discharged, thereby preventing the high-humidity gas from entering the tube body as the pusher seat moves, thereby ensuring that the adipic acid in the tube body and the quantitative tank is in a dry environment during the entire feeding process, thereby preventing the adipic acid from absorbing water and becoming viscous during the feeding process, thereby ensuring the normal feeding work.

[0048] (2) The purge assembly, partition and pusher seat provided in the present invention can drive the purge assembly to work during the movement of the partition, and further realize that after the pusher seat moves into the connecting seat, the purge assembly can be used to purge the surface of the pusher seat with gas to prevent adipic acid from adhering to the surface of the pusher seat.

[0049] (3) The present invention can achieve that during the feeding process, when the temperature and pressure in the reactor are too high, the adipic acid should not be fed in. It is only necessary to change the moving state of the pusher seat and reduce the time for the pusher seat to seal the feed pipe, thereby changing the amount of adipic acid entering the tube body through the feed pipe or controlling the pusher seat to stop moving, so as to reduce the feeding amount of adipic acid or stop feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0052] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0053] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0054] Figure 4 It is a partial structural schematic diagram of the present invention Figure 1 ;

[0055] Figure 5 It is a partial structural schematic diagram of the present invention Figure 2 ;

[0056] Figure 6 It is a partial structural schematic diagram of the present invention Figure 3 ;

[0057] Figure 7 It is a partial structural schematic diagram of the present invention Figure 4 ;

[0058] Figure 8 It is a partial structural schematic diagram of the present invention Figure 5 ;

[0059] Fig. 9 It is a partial structural schematic diagram of the present invention Figure 6 ;

[0060] Fig.10 It is a partial structural schematic diagram of the present invention Figure 7 ;

[0061] Fig.11 It is a partial structural schematic diagram of the present invention Figure 8 ;

[0062] Fig.12 It is a partial structural schematic diagram of the present invention Figure 9 .

[0063] Reference numerals:

[0064] 101, quantitative tank; 102, electric push rod; 103, connecting frame; 201, material box; 202, air pump box; 203, output pipe; 204, feed pipe; 205, input pipe; 206, net cylinder; 301, motor; 302, prism; 303, fixed frame; 304, adjustment pipe; 305, vortex plate; 306, annular seat; 307, first magnet; 308, push plate; 309, second magnet; 401, bracket; 402, hydraulic push rod; 403, push seat; 404, first electric Magnetic valve; 501, tube body; 502, connecting seat; 503, shell; 504, feeding pipe; 505, feeding pipe; 506, partition; 601, first sleeve; 602, connecting pipe; 603, arc tube; 604, nozzle; 605, second solenoid valve; 606, one-way valve; 607, exhaust pipe; 608, first piston; 609, first set of rods; 701, second sleeve; 702, second set of rods; 703, second piston; 704, third solenoid valve; 705, oil pipeline; 706, oil tank. DETAILED DESCRIPTION

[0065] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0066] Combine the following Figures 1 to 12 As shown, the embodiment of the present invention provides an automatic feeding and conveying system for adipic acid, comprising:

[0067] A quantitative tank 101, wherein a quantitative component is disposed in the quantitative tank 101, and the quantitative component can quantify the adipic acid in the quantitative tank 101;

[0068] A feeding assembly, the feeding assembly is connected to the quantitative tank 101;

[0069] The tube body 501, the connecting seat 502 and the shell 503 are all arranged at the bottom of the quantitative tank 101, the tube body 501 is connected with the connecting seat 502, and the connecting seat 502 is connected with the shell 503;

[0070] A feed pipe 505, the top of which passes through the inner wall of the bottom of the quantitative tank 101, and the bottom of the feed pipe 505 is connected to the tube body 501;

[0071] A feeding pipe 504 is provided through the bottom of the connecting seat 502 and is used to feed adipic acid into the reactor;

[0072] Pushing seat 403 (such as Fig. 9 As shown in FIG. 5 ), the material pushing seat 403 is slidably disposed in the tube body 501 , and the material pushing seat 403 is adapted to the connecting seat 502 and the housing 503 ;

[0073] A partition 506, which is slidably disposed in the tube body 501, and is adapted to the connecting seat 502 and the shell 503;

[0074] An adjusting component, which is arranged on one side of the partition 506 and connected to the material pushing seat 403, and is used to adjust the distance between the partition 506 and the material pushing seat 403;

[0075] The purge assembly is arranged at the end of the shell 503 and penetrates the inner wall of the connecting seat 502. The purge assembly is used to clean the surface of the pusher seat 403. The purge assembly and the partition plate 506 form a transmission fit.

[0076] During the feeding process, after the pusher seat 403 moves to the end of the tube body 501, at this time, the quantitative tank 101 and the tube body 501 are connected through the feed pipe 505, and the adipic acid in the quantitative tank 101 enters the tube body 501 through the feed pipe 505. During the above-mentioned movement of the pusher seat 403, the pusher seat 403 and the partition plate 506 are first kept relatively still by adjusting the assembly, that is, when the pusher seat 403 moves, the partition plate 506 is driven to move synchronously until the partition plate 506 enters the tube body 501;

[0077] Then, the pusher seat 403 moves in the reverse direction, that is, the pusher seat 403 pushes the oxalic acid into the connecting seat 502, so that the adipic acid falls below the connecting seat 502, and then the adipic acid is fed into the reactor through the feeding pipe 504 on the connecting seat 502. In this process, the pusher seat 403 and the partition 506 are kept relatively still by adjusting the assembly, that is, the pusher seat 403 moves, so that the partition 506 moves synchronously, until the partition 506 enters the shell 503;

[0078] During the process of adipic acid in the quantitative tank 101 entering the tube body 501, the end of the tube body 501 is sealed by the partition 506, so that the high-humidity gas in the reactor cannot enter the tube body 501 through the feeding pipe 504 and the connecting seat 502, so as to ensure that the adipic acid in the quantitative tank 101 and the tube body 501 will not become viscous due to water absorption, thereby ensuring the normal feeding operation;

[0079] After the feeding is completed, the pusher seat 403 and the partition 506 both enter the housing 503. At this time, the pusher seat 403 can be close to the partition 506 by adjusting the assembly, so that the gas between the pusher seat 403 and the partition 506 can be discharged, so as to avoid the high humidity gas between the pusher seat 403 and the partition 506 affecting the quality of adipic acid during the next feeding operation;

[0080] Therefore, under the premise of normal feeding operation, the feeding and conveying system can completely avoid the contact between the high-humidity gas in the reactor and the adipic acid in the tube body 501 and the quantitative tank 101, thereby avoiding the adipic acid absorbing water in the tube body 501 and the quantitative tank 101 and becoming viscous, thereby ensuring the normal feeding operation.

[0081] Further, the adjustment component includes:

[0082] The second sleeve 701 is fixed on the side wall of the partition 506 (such as Fig.12 As shown in FIG. 1 ), a second piston 703 is slidably disposed in the second sleeve 701;

[0083] The second rod 702 is fixed to the second piston 703, and the end of the second rod 702 is fixed to the pusher seat 403, and the second rod 702 is slidably connected to the partition plate 506;

[0084] Oil tank 706, the oil tank 706 is fixed to the end of the housing 503, and the oil tank 706 is filled with hydraulic oil;

[0085] A third solenoid valve 704, which is fixed through the end of the second sleeve 701;

[0086] The oil delivery pipe 705 has one end connected to the oil tank 706 and the other end connected to the third solenoid valve 704 .

[0087] When the third solenoid valve 704 is turned on, the oil tank 706 can be connected to the second sleeve 701 through the oil pipe 705 and the third solenoid valve 704, so that the hydraulic oil in the second sleeve 701 can be replenished or output to the oil tank 706, and the second piston 703 can slide along the second sleeve 701, so that the second sleeve rod 702 can be extended and retracted, so that the push seat 403 and the partition plate 506 can be relatively displaced;

[0088] On the contrary, when the third solenoid valve 704 is closed, the hydraulic oil in the second sleeve 701 cannot be replenished or output from the second sleeve 701, and the hydraulic oil cannot be compressed. Therefore, the second piston 703 cannot slide along the second sleeve 701, and the second sleeve rod 702 cannot be extended or retracted, so that the push seat 403 and the partition 506 remain relatively still.

[0089] Further, the purge assembly includes:

[0090] A first sleeve 601, which is fixed to the end of the housing 503, and a first piston 608 is slidably disposed in the first sleeve 601;

[0091] A first set of rods 609, the first set of rods 609 is fixed on the first piston 608, and the end of the first set of rods 609 is fixed to the partition plate 506;

[0092] One-way valve 606, which is arranged through the end of the first sleeve 601, and is fixedly connected to an air extraction pipe 607, which is connected to the exhaust port of the reactor;

[0093] Multiple nozzles 604 are all disposed on the inner wall of the top of the connecting seat 502 (eg Figure 5 and Fig. 9 As shown), the plurality of nozzles 604 are distributed in an arc shape, and the bottom ends of the plurality of nozzles 604 are flush with the inner wall of the connecting seat 502;

[0094] The arc tube 603 is connected to a plurality of nozzles 604;

[0095] The second solenoid valve 605 is disposed through the end of the first sleeve 601 . The second solenoid valve 605 is fixedly connected with the connecting pipe 602 , and the connecting pipe 602 is connected with the arc pipe 603 .

[0096] Before the tube body 501 is fed, the partition 506 moves from the shell 503 to the tube body 501. When adipic acid enters the connecting seat 502, the partition 506 enters the shell 503 again from the tube body 501, so that during the movement of the partition 506, the first piston 608 is driven to move back and forth in the first sleeve 601 through the first sleeve rod 609, so that the volume of the space enclosed by the first sleeve 601 and the first piston 608 increases or decreases. When the volume of the space increases, the gas in the reactor enters the space through the exhaust pipe 607 and the one-way valve 606. When the volume of the space decreases, the gas in the space is compressed. When the second solenoid valve 605 is turned on, the compressed gas in the space enters the nozzle 604 through the connecting pipe 602 and the arc pipe 603, and is output through the nozzle 604. The airflow is used to purge the surface of the push seat 403 to prevent adipic acid from adhering to the surface of the push seat 403.

[0097] Furthermore, a bracket 401 is fixed to the side wall of the quantitative tank 101 , a hydraulic push rod 402 is arranged on the bracket 401 , and the telescopic end of the hydraulic push rod 402 is fixed to a pushing seat 403 , and a first solenoid valve 404 is arranged through the side wall of the pushing seat 403 .

[0098] When the pusher 403 approaches the partition 506 , the switch of the first solenoid valve 404 is turned on so that the gas between the pusher 403 and the partition 506 can be output through the first solenoid valve 404 to discharge the high-humidity gas between the pusher 403 and the partition 506 .

[0099] Further, the feeding assembly includes:

[0100] A material box 201, which is disposed below the quantitative tank 101. A cover is hingedly connected to the top of the material box 201, and an output pipe 203 is provided through the top of the cover;

[0101] A feed pipe 204, one end of which passes through the inner wall of the bottom of the quantitative tank 101, and the other end of the feed pipe 204 is connected to the material box 201;

[0102] The net cylinder 206 is fixed on the inner wall of the top of the quantitative tank 101 (such as Figure 5 shown);

[0103] An input pipe 205, which is fixed on the top of the quantitative tank 101, and is connected to the net cylinder 206;

[0104] The air pump box 202 is fixed on the top of the quantitative tank 101. An air pump is arranged in the air pump box 202. The output port of the air pump is communicated with the output pipe 203, and the input port of the air pump is communicated with the input pipe 205.

[0105] When the air pump is working, gas is input into the material box 201 through the output pipe 203, and the high-pressure gas in the material box 201 enters the quantitative tank 101 through the feed pipe 204. The gas in the quantitative tank 101 is pumped into the air pump through the mesh tube 206 and the input pipe 205, thereby realizing the gas circulation in the material box 201 and the quantitative tank 101, and the adipic acid in the material box 201 is transported to the quantitative tank 101 by utilizing the gas circulation;

[0106] During the process of inputting adipic acid into the quantitative tank 101, the mesh tube 206 is used to prevent adipic acid from entering the input pipe 205, so as to ensure the normal transportation of adipic acid.

[0107] Furthermore, the quantitative components include:

[0108] The regulating tube 304 is sleeved on the feeding tube 204. The bottom of the regulating tube 304 is provided with a plurality of first mounting holes, and a second magnet 309 (such as Figure 8 shown);

[0109] A fixing frame 303, the fixing frame 303 is fixed on the top of the regulating tube 304, and a plurality of vortex plates 305 distributed at equal distances are fixed on the bottom of the fixing frame 303;

[0110] The prism 302 is slidably inserted on the top of the fixing frame 303, and the prism 302 is rotatably arranged on the top inner wall of the quantitative tank 101;

[0111] The motor 301 is fixed on the top of the quantitative tank 101, and the output shaft of the motor 301 and the prism 302 are fixed.

[0112] Furthermore, it also includes:

[0113] A connecting frame 103, wherein the connecting frame 103 is rotatably connected to a fixing frame 303;

[0114] Two electric push rods 102 are fixed on the top of the quantitative tank 101 , and the telescopic ends of the two electric push rods 102 are fixed to the connecting frame 103 .

[0115] When the electric push rod 102 is working, it drives the connecting frame 103 to rise, thereby driving the fixing frame 303 to rise. During the rising process of the fixing frame 303, the regulating tube 304 rises along the feeding tube 204.

[0116] After the amount of adipic acid in the quantitative tank 101 reaches a certain level, the switch of the motor 301 is turned on. When the motor 301 is working, the fixed frame 303 is driven to rotate through the prism 302, thereby driving the vortex plate 305 on the fixed frame 303 to rotate. During the rotation of the vortex plate 305, the adipic acid in the quantitative tank 101 is scraped off. At the same time, the vortex structure is used to enable the excess adipic acid to move to the regulating tube 304, and fall into the regulating tube 304 and the feeding tube 204 through the gap between the regulating tube 304 and the fixed frame 303, so as to achieve the storage of a certain amount of adipic acid in the quantitative tank 101;

[0117] The higher the height of the regulating tube 304 is, the greater the amount of adipic acid that can be stored in the quantitative tank 101 is. Thus, by changing the height of the regulating tube 304, the weighed amount of adipic acid can be increased, and the amount of adipic acid fed can be changed according to the production requirements of the polyester polyol.

[0118] Furthermore, it also includes:

[0119] The annular seat 306 is rotatably arranged on the inner wall at the bottom of the quantitative tank 101. The side wall of the annular seat 306 is provided with a plurality of equally distributed push plates 308. Each push plate 308 is a "V"-shaped structure. A plurality of second mounting holes are opened on the top of the annular seat 306. A first magnet 307 is fixed in each second mounting hole.

[0120] Before the feeding process starts, it is necessary to ensure that the moving track of at least one turning point of the push plate 308 coincides with the feed pipe 505;

[0121] At the later stage of feeding, it is necessary to turn on the switch of the electric push rod 102 to make the regulating tube 304 descend and make the regulating tube 304 and the annular seat 306 collide, and turn on the switch of the motor 301 to make the regulating tube 304 rotate. At this time, when the regulating tube 304 rotates, the annular seat 306 is driven to rotate synchronously through the second magnet 309 and the first magnet 307, thereby driving the pushing plate 308 on the annular seat 306 to rotate, and the adipic acid at the bottom of the quantitative tank 101 is pushed by the pushing plate 308. Since the pushing plate 308 is a "V"-shaped structure, the adipic acid is gathered to the turning point of the pushing plate 308. Since the motion trajectory of the turning point of the pushing plate 308 coincides with the feeding pipe 505, the adipic acid at the bottom of the quantitative tank 101 can be gathered by the pushing plate 308 and pushed into the feeding pipe 505, so as to ensure that the adipic acid in the quantitative tank 101 can be completely put into the reactor.

[0122] The specific working method is: when in use, first ensure that at least one push plate 308 can overlap the motion trajectory of the turning point with the feed pipe 505 when rotating, then open the cover, pour adipic acid into the material box 201, close the cover and ensure the sealing between the cover and the material box 201;

[0123] The switch of the air pump in the air pump box 202 is turned on. When the air pump is working, the gas in the net tube 206 is extracted through the input pipe 205, and the gas is transported to the material box 201 through the output pipe 203. A circulating airflow is generated in the quantitative tank 101 and the material box 201 through the feed pipe 204, and the adipic acid powder in the material box 201 is transported into the quantitative tank 101 by the circulating airflow;

[0124] The electric push rod 102 is switched on. When the electric push rod 102 is working, it adjusts the height of the fixing frame 303 through the connecting frame 103. When the fixing frame 303 rises, it drives the adjusting tube 304 to rise, thereby adjusting the height of the adjusting tube 304. When the height of the top of the adjusting tube 304 is changed, the amount of adipic acid that can be stored in the material box 201 also increases. Therefore, in the polyester polyol production process, the height of the adjusting tube 304 can be adjusted according to the actual reaction requirements.

[0125] When the adipic acid powder in the quantitative tank 101 reaches a certain amount, the switch of the motor 301 is turned on. When the motor 301 is working, the prism 302 is driven to rotate, and then the regulating tube 304 and multiple vortex plates 305 are driven to rotate through the fixed frame 303. The vortex plates 305 rotate to flatten the adipic acid powder in the quantitative tank 101. When the surface of the adipic acid in the quantitative tank 101 is flattened, the switch of the air pump is turned off to stop inputting adipic acid into the quantitative tank 101. A visual window or visual detection mechanism is set on the quantitative tank 101 to facilitate observation of the internal material conditions. During the rotation of the vortex plate 305, the excess adipic acid powder is pushed to the regulating tube 304 through the vortex structure of the vortex plate 305, and falls into the regulating tube 304 and the feed tube 204 through the gap between the regulating tube 304 and the fixed frame 303, so that the top of the adipic acid material and the top of the regulating tube 304 can be flush, so as to achieve quantitative weighing of adipic acid;

[0126] When adipic acid is added to the reactor, firstly, the feeding pipe 504 is connected to the feeding port of the reactor, and the exhaust pipe 607 is connected to the exhaust port of the reactor;

[0127] The switch of the hydraulic push rod 402 is turned on. When the hydraulic push rod 402 is working, it drives the push seat 403 to move toward the bracket 401, so that the push seat 403 is away from the feed pipe 505. When the push seat 403 is away from the feed pipe 505, the oxalic acid powder in the quantitative tank 101 enters the tube body 501 through the feed pipe 505. Specifically: during the above movement of the push seat 403, the initial state of the push seat 403 and the partition 506 is mutually conflicting. When the push seat 403 moves, the third solenoid valve 704 is firstly closed. When the third solenoid valve 704 is closed, the hydraulic oil in the second sleeve 701 is empty. The second piston 703 and the second sleeve 701 are relatively stationary, so that the second rod 702 and the second sleeve 701 are relatively stationary, so that the pusher seat 403 moves and drives the partition plate 506 to move during the process, so that the partition plate 506 can move to the end of the tube body 501, and the connecting seat 502 and the tube body 501 are sealed by the partition plate 506, so that the gas with a high water content in the reactor is prevented from entering the tube body 501 during the feeding process of the tube body 501, thereby maintaining the dryness of the tube body 501;

[0128] When the partition 506 enters the tube body 501, the partition 506 moves through the first sleeve rod 609 so that the first piston 608 moves to the end of the first sleeve 601. When the partition 506 completely enters the tube body 501, the first piston 608 and the end of the first sleeve 601 collide with each other, thereby limiting the movement of the partition 506. At this time, the switch of the third solenoid valve 704 is turned on, so that the hydraulic oil in the oil tank 706 can enter the second sleeve 701 through the oil pipe 705 and the third solenoid valve 704. 01, so that the second piston 703 and the second sleeve rod 702 can move along the second sleeve 701, so that the pusher seat 403 can be relatively displaced with the partition 506. When the partition 506 is restricted from moving, as the pusher seat 403 moves, the tube body 501 between the pusher seat 403 and the partition 506 is in a vacuum state. When the pusher seat 403 is away from the feed pipe 505, the oxalic acid in the quantitative tank 101 is drawn into the tube body 501 under the action of negative pressure.

[0129] Then, the pusher seat 403 is driven by the hydraulic push rod 402 to move away from the bracket 401, so as to push the adipic acid in the tube body 501 to move. When the pusher seat 403 approaches the partition 506, the switch of the third solenoid valve 704 is closed. At this time, the hydraulic oil in the second sleeve 701 can only exist in the second sleeve 701. Therefore, the second sleeve rod 702 cannot be retracted into the second sleeve 701. At this time, the pusher seat 403 moves through the second sleeve rod 702, the second piston 703 and the second sleeve 701 to drive the partition 506 to move at the same time, so as to prevent the pusher seat 403 and the partition 506 from compressing the adipic acid powder. With the operation of the hydraulic push rod 402, when the partition 506 leaves the connecting seat 502 and enters the shell 503, the pusher seat 403 pushes the adipic acid in the tube body 501 into the connecting seat 502, and the adipic acid falls to the bottom of the connecting seat 502 and enters the reactor through the feeding pipe 504 at the bottom of the connecting seat 502.

[0130] During the movement of the partition 506, when the tube body 501 is fed, the partition 506 moves from the shell 503 to the tube body 501. In this process, the partition 506 reduces the air pressure in the space on the side of the first piston 608 in the first sleeve 601 through the first sleeve rod 609 and the first piston 608. When the air pressure in the space decreases, the gas in the reactor is pumped into the first sleeve 601 through the exhaust pipe 607 and the one-way valve 606. When the pushing seat 403 pushes adipic acid into the connecting seat 502, the partition 506 moves from the tube body 501 to the shell 503. In this process, the partition 506 compresses the gas in the first sleeve 601 through the first sleeve rod 609 and the first piston 608.

[0131] After the adipic acid powder falls into the bottom of the connecting seat 502, as the pushing seat 403 continues to move, when the pushing seat 403 moves to the nozzle 604, the tube body 501 and the connecting seat 502 are sealed by the pushing seat 403. At this time, the switch of the second solenoid valve 605 is turned on, and the high-pressure gas on the side of the first piston 608 in the first sleeve 601 enters the nozzle 604 through the second solenoid valve 605, the connecting pipe 602, and the arc pipe 603, and is ejected through the nozzle 604, and the surface of the pushing seat 403 is swept by the high-speed airflow to prevent the adipic acid from adhering to the surface of the pushing seat 403;

[0132] After purging, the pusher seat 403 is driven to move by the hydraulic push rod 402. When the pusher seat 403 enters the shell 503, the first piston 608 moves to the other end of the first sleeve 601, so that the partition 506 cannot move further. The switch of the first solenoid valve 404 is turned on, and the switch of the third solenoid valve 704 is turned on, so that relative displacement can occur between the pusher seat 403 and the partition 506. Therefore, the pusher seat 403 can approach the partition 506 until the pusher seat 403 and the partition 506 collide with each other. In the process of the pusher seat 403 and the partition 506 approaching each other, the gas between the pusher seat 403 and the partition 506 in the shell 503 is output through the first solenoid valve 404, and then the pusher seat 403 is driven by the hydraulic push rod 402 to move toward the bracket 401, completing the entire feeding operation;

[0133] At the later stage of feeding, it is necessary to turn on the switch of the connecting frame 103, so that the regulating tube 304 descends and makes the regulating tube 304 and the annular seat 306 collide, and turn on the switch of the motor 301 to rotate the regulating tube 304. At this time, when the regulating tube 304 rotates, the annular seat 306 is driven to rotate synchronously through the second magnet 309 and the first magnet 307, thereby driving the push plate 308 on the annular seat 306 to rotate, and the adipic acid at the bottom of the quantitative tank 101 is pushed by the push plate 308. Since the push plate 308 is a "V"-shaped structure, the adipic acid is gathered to the turning point of the push plate 308. Since the motion trajectory of the turning point of the push plate 308 coincides with the feeding pipe 505, the adipic acid at the bottom of the quantitative tank 101 can be gathered by the push plate 308 and pushed into the feeding pipe 505, so as to ensure that the adipic acid in the quantitative tank 101 can be fully put into the reactor;

[0134] When the temperature or air pressure in the reactor is too high, the feeding amount of adipic acid should be reduced or the feeding operation should be stopped directly. At this time, it is only necessary to control the extension and retraction frequency of the hydraulic push rod 402. After the extension and retraction frequency of the hydraulic push rod 402 is changed, the time for the push seat 403 to seal the feed pipe 505 is reduced, thereby changing the amount of adipic acid entering the tube body 501 through the feed pipe 505 or closing the hydraulic push rod 402, so as to reduce the feeding amount of adipic acid or stop the feeding.

Claims

1. Adipic acid automatic feeding and conveying system, characterized in that: include: Dosing tank (101); A material supply assembly, the material supply assembly being in communication with a quantitative tank (101); A tube body (501), a connecting seat (502) and a shell (503), wherein the tube body (501), the connecting seat (502) and the shell (503) are all arranged at the bottom of the quantitative tank (101), the tube body (501) and the connecting seat (502) are connected, and the connecting seat (502) and the shell (503) are connected; A feed pipe (505), the top end of the feed pipe (505) passes through the inner wall of the bottom of the quantitative tank (101), and the bottom end of the feed pipe (505) is connected to the pipe body (501); A feeding pipe (504), the feeding pipe (504) is arranged through the bottom of the connecting seat (502), and the feeding pipe (504) is used to feed adipic acid into the reaction kettle; A material pushing seat (403), wherein the material pushing seat (403) is slidably disposed in the tube body (501), and the material pushing seat (403) is adapted to the connecting seat (502) and the shell (503); A partition (506), wherein the partition (506) is slidably disposed in the tube body (501), and the partition (506) is adapted to the connecting seat (502) and the shell (503); An adjusting component, the adjusting component being arranged on one side of the partition (506) and connected to the material pushing seat (403), the adjusting component being used to adjust the distance between the partition (506) and the material pushing seat (403); A purge assembly is arranged at the end of the shell (503) and penetrates the inner wall of the connecting seat (502). The purge assembly is used to clean the surface of the pusher seat (403). The purge assembly and the partition plate (506) form a transmission fit.

2. The automatic feeding and conveying system for adipic acid according to claim 1, characterized in that: The adjustment component comprises: A second sleeve (701), the second sleeve (701) being fixed on a side wall of the partition (506), and a second piston (703) being slidably disposed in the second sleeve (701); A second rod (702), wherein the second rod (702) and the second piston (703) are fixed, and an end of the second rod (702) is fixed on the material pushing seat (403), and the second rod (702) and the partition plate (506) are slidably connected; An oil tank (706), the oil tank (706) being fixed to an end of the housing (503), the oil tank (706) being filled with hydraulic oil; A third solenoid valve (704), the third solenoid valve (704) penetrating and fixed at the end of the second sleeve (701); An oil delivery pipe (705), one end of the oil delivery pipe (705) is connected to the oil tank (706), and the other end of the oil delivery pipe (705) is connected to the third solenoid valve (704).

3. The automatic feeding and conveying system for adipic acid according to claim 1, characterized in that: The purge assembly comprises: A first sleeve (601), the first sleeve (601) being fixed to an end of the housing (503), and a first piston (608) being slidably disposed in the first sleeve (601); A first set of rods (609), wherein the first set of rods (609) is fixed on the first piston (608), and an end of the first set of rods (609) is fixed to the partition plate (506); A one-way valve (606), the one-way valve (606) is arranged through the end of the first sleeve (601), the one-way valve (606) is fixedly connected to an exhaust pipe (607), and the exhaust pipe (607) is connected to the exhaust port of the reaction kettle; A plurality of nozzles (604), wherein the plurality of nozzles (604) are all disposed through the inner wall at the top of the connecting seat (502), and the plurality of nozzles (604) are distributed in an arc shape, and the bottom ends of the plurality of nozzles (604) are all flush with the inner wall of the connecting seat (502); An arc-shaped tube (603), wherein the arc-shaped tube (603) is connected to a plurality of nozzles (604); A second solenoid valve (605), the second solenoid valve (605) is arranged to penetrate the end of the first sleeve (601), the second solenoid valve (605) is fixedly connected to a connecting pipe (602), and the connecting pipe (602) is connected to the arc-shaped pipe (603).

4. The automatic feeding and conveying system for adipic acid according to claim 2, characterized in that: A bracket (401) is fixed to the side wall of the quantitative tank (101), a hydraulic push rod (402) is arranged on the bracket (401), and the telescopic end of the hydraulic push rod (402) is fixed to a material pushing seat (403), and a first solenoid valve (404) is arranged through the side wall of the material pushing seat (403).

5. The automatic feeding and conveying system for adipic acid according to claim 1, characterized in that: The feeding assembly comprises: A material box (201), the material box (201) being arranged below the quantitative tank (101), the top of the material box (201) being hingedly connected with a cover body, the top of the cover body being penetrated by an output pipe (203); A feed pipe (204), one end of the feed pipe (204) passes through the inner wall of the bottom of the quantitative tank (101), and the other end of the feed pipe (204) is connected to the material box (201); A net cylinder (206), wherein the net cylinder (206) is fixed on the top inner wall of the quantitative tank (101); An input pipe (205), wherein the input pipe (205) is fixed on the top of the quantitative tank (101), and the input pipe (205) is connected to the net cylinder (206); An air pump box (202) is fixed on the top of the quantitative tank (101), an air pump is arranged in the air pump box (202), an output port of the air pump is connected to an output pipe (203), and an input port of the air pump is connected to an input pipe (205).

6. The automatic feeding and conveying system for adipic acid according to claim 5, characterized in that: A quantitative component is arranged in the quantitative tank (101), and the quantitative component comprises: An adjusting tube (304), the adjusting tube (304) being sleeved on the feeding tube (204), a plurality of first mounting holes being formed at the bottom of the adjusting tube (304), a second magnet (309) being fixed in each of the first mounting holes; A fixing frame (303), the fixing frame (303) being fixed on the top of the regulating tube (304), and a plurality of vortex plates (305) distributed at equal distances being fixed on the bottom of the fixing frame (303); A prism (302), wherein the prism (302) is slidably inserted on the top of the fixing frame (303), and the prism (302) is rotatably arranged on the top inner wall of the quantitative tank (101); A motor (301) is fixed on the top of the quantitative tank (101), and an output shaft of the motor (301) and a prism (302) are fixed.

7. The automatic feeding and conveying system for adipic acid according to claim 6, characterized in that: Also includes: A connecting frame (103), wherein the connecting frame (103) and the fixing frame (303) are rotatably connected; Two electric push rods (102), both of which are fixed on the top of the quantitative tank (101), and the telescopic ends of the two electric push rods (102) are fixed to the connecting frame (103).

8. The automatic feeding and conveying system for adipic acid according to claim 6, characterized in that: Also includes: An annular seat (306) is rotatably disposed on the inner wall of the bottom of the quantitative tank (101); a plurality of push plates (308) are disposed on the side wall of the annular seat (306) and are distributed at equal distances; each of the push plates (308) is a "V"-shaped structure; a plurality of second mounting holes are formed on the top of the annular seat (306); a first magnet (307) is fixed in each of the second mounting holes.

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