Method and device for intelligently monitoring acetic anhydride content

Abstract

The invention discloses a method and device for intelligently monitoring the content of acetic anhydride, and relates to the technical field of acetic anhydride monitoring. An L-shaped fixing plate is arranged at the top of the base, a solvent tank is arranged in the L-shaped fixing plate, a feeding pipe is arranged on the left side of the solvent tank, a circulating pump is arranged on the right side of the top of the base, the left side of the circulating pump communicates with the solvent tank through a straight pipe, a circulating pipe is arranged between the top of the circulating pump and the solvent tank, and a refraction assembly is arranged in the L-shaped fixing plate. The stirring net plate is used for stirring and mixing a bottom solution and a top solution of the solvent tank, the precipitation phenomenon of acetic anhydride components in the long-term storage process is prevented, and the situation that the acetic anhydride content of the solution at different depths is different, and then the acetic anhydride content detection effect is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring acetic anhydride, and in particular to a method and a device for intelligently monitoring the content of acetic anhydride. Background Art

[0002] Acetic anhydride, also known as acetic anhydride, is an acid anhydride derived from acetic acid. Acetic anhydride is an important acetylation agent and is also used in the manufacture of medicines, fragrances, dyes, plasticizers, etc. It is usually used as an acetylation agent and dehydrating agent in organic synthesis, and can make alcohols, phenols, ammonia and amines form acetate and acetamide compounds respectively.

[0003] Patent announcement number CN214540481U discloses an intelligent remote automatic monitoring device for liquid storage tanks used on construction sites. The monitoring device includes a liquid storage tank, a liquid level monitoring device, a distribution box, an information transmission device, and a mobile terminal. The liquid storage tank is located on the device platform. A stirring device is provided in the liquid storage tank. The stirring device is driven by a stirring motor provided on the storage tank cover. A feed port is provided on the liquid storage tank cover. A discharge port is provided at the lower part of the liquid storage tank body. A discharge pipe with a discharge pump is provided at the discharge port. The distribution box is located next to the liquid storage tank and is electrically connected to the stirring motor and the discharge pump. The liquid level monitoring device is provided on the inner wall of the liquid storage tank. The liquid level monitoring device is connected to the information transmission device for communication. The information transmission device is connected to the mobile terminal for communication. The liquid storage tank automatically monitors the amount of inventory, remaining amount, and usage in the storage tank through the automatic monitoring device, and transmits the data to the mobile terminal through wireless communication signals, and the data is shared through the mobile terminal.

[0004] However, the device still has some shortcomings: the device can automatically monitor the liquid content in the liquid storage tank, but the acetic anhydride content in the liquid changes continuously over time during long-term storage, and the content of alcohol compounds in acetic anhydride changes continuously over time. Therefore, before the liquid is put into use, the staff needs to intelligently monitor the acetic anhydride content in the liquid to avoid continuous volatilization of acetic anhydride, which may easily reduce the use effect of the liquid. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a method and device for intelligently monitoring the content of acetic anhydride, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention is implemented by the following technical scheme: a method for intelligently monitoring the content of acetic anhydride, comprising the following steps: S1: A solution containing acetic anhydride is stored in the solvent tank. The solvent tank monitors the acetic anhydride content in the solution in real time. When the solution is put into use, the acetic anhydride content of the solution in the solvent tank needs to be detected; S2: At this time, the circulation pump is started, and the circulation pump extracts the solution in the solvent tank through the straight pipe and transports it through the circulation pipe. When the circulation pipe transports the solution to the inside of the refractive assembly, the acetic anhydride content in the solution is detected by the refractive assembly, and then the extracted solution is sent into the solvent tank through the top of the circulation pipe; S3: Before this, the electric reciprocating screw is started, and the sleeve is driven to rotate when the electric reciprocating screw rotates, and the sleeve drives the stirring screen to rotate and disturb the solution at the bottom of the solvent tank; S4: At the same time, when the electric reciprocating screw rotates, the reciprocating spiral groove on its outer wall limits the built-in block of the collar, so that the collar can slide upward along its outer wall and reset when the electric reciprocating screw rotates. The collar drives the connecting plate to move synchronously, and the connecting plate drives the cooling component to move synchronously along the inner wall of the solvent tank, thereby expanding the range of motion of the cooling component.

[0007] A device for intelligently monitoring acetic anhydride content, comprising a base, an L-shaped fixing plate is arranged on the top of the base, a solvent tank is arranged inside the L-shaped fixing plate, a feed pipe is arranged on the left side of the solvent tank, a circulation pump is arranged on the right side of the top of the base, the left side of the circulation pump is connected with the solvent tank through a straight pipe, a circulation pipe is arranged between the top of the circulation pump and the solvent tank, a refraction component is arranged inside the L-shaped fixing plate, and the inside of the refraction component is connected with the circulation pipe; An anti-precipitation device is provided inside the solvent tank, an anti-stratification device is provided above the anti-precipitation device, and an anti-solidification device is provided above the anti-stratification device; The anti-precipitation device comprises an electric reciprocating screw, the bottom of which is rotatably mounted on the bottom of the inner wall of the solvent tank, a sleeve is fixedly mounted on the outer wall of the electric reciprocating screw, a plurality of stirring screens are equidistantly and fixedly mounted on the outer wall of the sleeve, a plurality of stirring screens are provided with U-shaped grooves at the bottom, a sleeve ring is passed through and movably mounted on the outer wall of the electric reciprocating screw, a plurality of connecting plates are equidistantly and fixedly mounted on the outer wall of the ring, a cooling assembly is fixedly mounted on one side of the connecting plates close to the inner wall of the solvent tank, the outer wall of the cooling assembly is slidably mounted on the inner wall of the solvent tank, a sliding plate is passed through and slidably mounted on the outer wall of the stirring screen, and the sliding plate is close to the sleeve ring. A tough scraper is fixedly installed on one side, a groove plate is fixedly installed on the outer wall of one end of the stirring mesh plate close to the sleeve ring, an I-shaped column is rotatably installed inside the U-shaped groove of the stirring mesh plate, and a spiral sheet is penetrated and fixedly installed on the outer wall of the I-shaped column. A solution containing acetic anhydride is stored inside the solvent tank, and the solvent tank monitors the acetic anhydride content in the solution in real time. When the solution is put into use, the acetic anhydride content of the solution in the solvent tank needs to be detected. At this time, the circulation pump is started, and the circulation pump draws out the solution in the solvent tank through a straight pipe and transports it through a circulation pipe. When the circulation pipe transports the solution to the inside of the refractive assembly, the acetic anhydride content in the solution is measured through the refractive assembly. The detection is then carried out, and then the extracted solution is sent into the solvent tank through the top of the circulation pipe; before this, the electric reciprocating screw is started, and the sleeve is driven to rotate when the electric reciprocating screw rotates, and the sleeve drives the stirring screen to rotate and disturb the solution at the bottom of the solvent tank. At the same time, the reciprocating spiral groove on its outer wall restricts the built-in block of the collar when the electric reciprocating screw rotates, so that the collar can slide upward along its outer wall and reset when the electric reciprocating screw rotates, and the collar drives the connecting plate to move synchronously, and the connecting plate drives the cooling component to move synchronously along the inner wall of the solvent tank, thereby expanding the range of movement of the cooling component; when the cooling component moves upward, the pressure on the sliding plate is gradually released, and the sliding plate The movable plate slides upward along the outer wall of the stirring screen plate under the elastic force of the spring, and the sliding plate drives the tough scraper to move synchronously. During the upward movement of the tough scraper, it drives the contact with the groove surface in the groove plate to generate resistance force. At this time, the tough scraper is deformed and bent. As the sliding plate moves, the deformed tough scraper has a stronger scraping force on the outer wall of the stirring screen plate. Then, the stirring screen plate drives the I-beam column to revolve along the bottom of the inner wall of the solvent tank. The I-beam column begins to rotate along the inner wall of the U-shaped groove of the stirring screen plate due to the friction force of the revolution. The I-beam column drives the spiral sheet to revolve and rotate. Through the above cooperation, the tough scraper can effectively scrape off the acetic anhydride components precipitated on the surface of the stirring screen plate.

[0008] According to the above technical solution, the bottom of the sleeve contacts the bottom of the inner wall of the solvent tank, the ring is located above the sleeve, a longitudinal spring is arranged between the inside of the sliding plate and the stirring mesh plate, the top of the sliding plate contacts the bottom of the cooling assembly, the groove in the groove plate is located on the movement trajectory of the tough scraper, and the outer walls at both ends of the I-beam contact the bottom of the inner wall of the solvent tank.

[0009] According to the above technical scheme, the anti-segregation device includes a guide arc plate, a transverse plate, a filter plate, a rotating rod and a plurality of diffusion plates. The bottom of the guide arc plate is fixedly installed at the top edge of the cooling component, the transverse plate is fixedly installed on the inner wall of the cooling component near one end of the solvent tank, the outer wall of the filter plate is fixedly installed above the inside of the solvent tank, the top of the rotating rod passes through and is rotatably installed at the inner edge of the filter plate, and a plurality of the diffusion plates are fixedly installed on the outer wall surface of the rotating rod. When the cooling component moves upward and resets, it drives the guide arc plate to move synchronously. The guide arc plate diffuses the cold air emitted by the cooling component over a large range for a second time. At the same time, the guide arc plate drives the transverse plate to move synchronously. When the transverse plate moves upward and resets, it drives the threaded rotating rod to generate a rotational force. At this time, the rotating rod will realize forward and reverse rotation along the bottom of the filter plate, and the rotating rod drives the diffusion plate to move synchronously. The diffusion plate disturbs the solution around the edge of the solvent tank to move toward its center.

[0010] According to the above technical solution, the outer wall of the rotating rod is connected to the inside of the horizontal plate by threads, a plurality of the diffusion plates are evenly distributed on the outer wall of the rotating rod, and the diffusion plates are hollow in design.

[0011] According to the above technical scheme, the anti-layer device also includes a through-plate, a slotted elastic sheet, a friction roller and a cam, the outer wall of the through-plate is slidably installed inside the diffusion plate, the through-plate is in contact with the inner wall of the solvent tank on the side away from the rotating rod, and a square groove is opened inside the through-plate, the slotted elastic sheet is fixedly installed between the outer wall of the diffusion plate and the outer wall of the through-plate, the friction roller is rotatably installed inside the square groove of the through-plate, the outer wall of the friction roller is in contact with the inner wall of the diffusion plate, and the bottom of the cam is fixedly installed on the top of the rotating rod, and the diffusion plate drives the through-plate to move synchronously when it rotates, and when the through-plate rotates, it breaks away from the resistance of the inner wall of the solvent tank, at this time, the through-plate extends in the direction away from the rotating rod under the elastic force of the slotted elastic sheet, and at this time, the slotted elastic sheet is deformed synchronously, but when the through-plate resists the inner wall of the solvent tank again, the through-plate is reset and the slotted elastic sheet is squeezed to reset, and the reciprocating process causes the through-plate to drive the friction roller to move synchronously along the inner wall of the diffusion plate, and at this time, the friction roller starts to rotate by friction to convert the sliding friction of the through-plate into rolling friction, and the rotating rod drives the cam to rotate synchronously along the top of the filter plate, and the cam disturbs the liquid around the top of the filter plate.

[0012] The cam is fixedly mounted on one end of the push rod near the transmission plate, and the push rod is installed on the other end of the push rod near the transmission plate.

[0013] According to the above technical solution, a transverse spring is arranged between the bottom of the transmission plate and the filter plate, the arc surface of the round block contacts the outer wall of the cam, the bottom of the circular plate contacts the top of the filter plate, the end of the push rod close to the inner wall of the solvent tank passes through the inside of the circular plate, and the bottom of the push plate contacts the top of the filter plate.

[0014] According to the above technical solution, the anti-solidification device also includes a fixed column, a plurality of inclined plates, a reset plate and a hollow column. The outer wall of the fixed column is fixedly installed on the inner wall of the circular plate. The plurality of inclined plates are symmetrically and hinged on the outer wall of the fixed column through a torsion spring. The side of the inclined plate close to the push rod is slidably connected with the side of the push plate close to the round block. The reset plate is fixedly installed on the side of the circular plate close to the axis of the filter plate. The end of the hollow column close to the transmission plate is fixedly installed on the concave surface of the reset plate. The outer wall of the push plate is located on the movement trajectory of the hollow column. The push plate moves toward the transmission plate. When the push plate is in the forward direction, it drives the inclined plate to move synchronously. After the inclined plate is limited by the fixed column, the hinge shaft of the inclined plate generates a rotational force under the push of the push plate. At this time, the inclined plate swings along the outer wall of the push plate away from the center of the fixed column, and then automatically resets through the torsion spring. At the same time, the push plate drives the reset plate to move synchronously. The reset plate and the transmission plate conflict with each other and deform. The reset plate drives the hollow column to move toward the push plate and contact it. When the reset plate is no longer conflicted, the hollow column is driven to continuously knock on the push plate to generate vibration during the reset process of the reset plate.

[0015] The present invention provides a method and device for intelligently monitoring the content of acetic anhydride. It has the following beneficial effects: (1) The present invention sets an anti-precipitation device, and cooperates with an electric reciprocating screw, a sleeve, a stirring screen, a collar, a connecting plate, a cooling component, a sliding plate, a tough scraper, a groove plate, an I-beam and a spiral sheet. The stirring screen disturbs the mixing of the bottom solution of the solvent tank with the top solution, thereby preventing the precipitation of the acetic anhydride component during long-term storage, and avoiding the high content of the sample data detected. At the same time, the cooling component performs temperature control on the inside of the solvent tank to prevent the temperature change from changing the chemical equilibrium constant of acetic anhydride and affecting the accuracy of the analysis result, thereby reducing the error of acetic anhydride content detection; at the same time, the tough scraper can effectively scrape off the acetic anhydride component precipitated on the surface of the stirring screen, ensuring the cleanliness of the outer wall of the stirring screen while facilitating the re-mixing of the acetic anhydride precipitate in the solution, and the spiral sheet accelerates the flow rate of the solution and the precipitate through its own spiral sheet during the movement, shortening the fusion time of the solution and the precipitate, thereby further improving the detection speed and detection accuracy and reducing the error.

[0016] (2) The present invention further ensures the uniformity of temperature control inside the solvent tank by setting up an anti-stratification device through the coordination of a cooling assembly, a guide arc plate, a horizontal plate, a filter plate, a rotating rod, a diffusion plate, a through plate, a slotted elastic sheet, a friction roller and a cam. At the same time, the forward and reverse rotation of the diffusion plate is used to prevent floating sediments from adhering to the inner wall of the solvent tank, thereby preventing the sediments from being difficult to dissolve in the solution within a very short preparation time, and preventing the acetic anhydride content of the extracted solution sample from gradually decreasing during the bottom-up extraction process, thereby avoiding the formation of a step-by-step test result that makes it difficult to judge whether the acetic anhydride content meets the standard; and the through plate is caused to rotate and scrape the inside of the solvent tank when expanding the disturbance range of the diffusion plate on the solution, thereby improving the solution disturbance effect while ensuring the cleanliness of the inner wall of the solvent tank, preventing the chemical components in the sediment from corroding the solvent tank, and further avoiding the uneven distribution of the acetic anhydride content in the solvent resulting in a gradient change in the test result.

[0017] (3) The present invention, through the setting of the anti-solidification device, cooperates with the cam, transmission plate, round block, circular plate, push rod, push plate, fixed column, inclined plate, reset plate and hollow column, and uses the circular plate and push plate to push the material residue left on the top of the filter plate when feeding through the feed pipe, so that the residual material can fall into the solution quickly with the help of the filter holes of the filter plate during the pushing process, and avoid the residue staying on the top of the filter plate for a long time to cause oxidation and solidification, resulting in clogging of the filter holes, and prevent the solution falling from the circulation pipe from being blocked and difficult to fall, thereby accelerating the volatilization rate of the acetic anhydride component in the blocked solution and increasing the maintenance cost; and uses the inclined plate to diffuse the pushing trajectory of the push plate in a more refined manner, that is, to achieve secondary pushing of the residue, expand the dispersion range of the residue on the top of the filter plate, further prevent the residue from accumulating and clogging and increase the falling speed of the residue, and at the same time use the vibration force to reduce the adhesion strength of the residue on the top of the filter plate, and avoid the circular plate and other parts from crushing the residue and increasing the difficulty of removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a schematic diagram of the internal structure of the present invention as a whole; Figure 3 It is a schematic diagram of the anti-sedimentation device of the present invention; Figure 4 This is a schematic diagram of the bottom perspective of the anti-sedimentation device of the present invention; Figure 5 A schematic diagram of the anti-stratification device of the present invention; Figure 6 It is a cross-sectional schematic diagram of the anti-degradation device of the present invention; Figure 7 It is a schematic diagram of an enlarged portion of the structure of the anti-stratification device of the present invention; Figure 8 It is a schematic diagram of the anti-curing device of the present invention; Fig. 9 It is a schematic diagram of the anti-solidification device from the top perspective of the present invention.

[0019] In the figure: 1, base; 2, L-shaped fixing plate; 21, solvent tank; 22, feed pipe; 3, circulation pump; 31, circulation pipe; 32, refraction assembly; 4, anti-sedimentation device; 41, electric reciprocating screw; 42, sleeve; 43, stirring screen; 44, collar; 45, connecting plate; 46, cooling assembly; 47, sliding plate; 48, tough scraper; 49, groove plate; 410, I-beam column; 411, spiral plate; 5, anti-stratification device; 51, arc guide plate; 52, horizontal plate; 53, filter plate; 54, rotating rod; 55, diffusion plate; 56, through plate; 57, slotted elastic sheet; 58, friction roller; 59, cam; 6, anti-solidification device; 61, transmission plate; 62, round block; 63, circular plate; 64, push rod; 65, push plate; 66, fixed column; 67, inclined plate; 68, reset plate; 69, hollow column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-Figure 9 One embodiment of the present invention is: a method for intelligently monitoring acetic anhydride content, comprising the following steps: S1: A solution containing acetic anhydride is stored in the solvent tank 21. The solvent tank 21 monitors the acetic anhydride content in the solution in real time. When the solution is put into use, the acetic anhydride content of the solution in the solvent tank 21 needs to be detected; S2: At this time, the circulation pump 3 is started, and the circulation pump 3 extracts the solution in the solvent tank 21 through the straight pipe and transports it through the circulation pipe 31. When the circulation pipe 31 transports the solution to the inside of the refractive component 32, the acetic anhydride content in the solution is detected by the refractive component 32, and then the extracted solution is sent into the solvent tank 21 through the top of the circulation pipe 31; S3: before this, the electric reciprocating screw 41 is started, and the electric reciprocating screw 41 rotates to drive the sleeve 42 to rotate, and the sleeve 42 drives the stirring screen 43 to rotate and disturb the solution at the bottom of the solvent tank 21; S4: At the same time, when the electric reciprocating screw 41 rotates, the reciprocating spiral groove on its outer wall limits the built-in block of the ring 44, so that when the electric reciprocating screw 41 rotates, the ring 44 can slide upward along its outer wall and reset. The ring 44 drives the connecting plate 45 to move synchronously, and the connecting plate 45 drives the cooling component 46 to move synchronously along the inner wall of the solvent tank 21, thereby expanding the range of motion of the cooling component 46.

[0022] A device for intelligently monitoring acetic anhydride content comprises a base 1, an L-shaped fixing plate 2 is arranged on the top of the base 1, a solvent tank 21 is arranged inside the L-shaped fixing plate 2, a feed pipe 22 is arranged on the left side of the solvent tank 21, a circulation pump 3 is arranged on the right side of the top of the base 1, the left side of the circulation pump 3 is connected with the solvent tank 21 through a straight pipe, a circulation pipe 31 is arranged between the top of the circulation pump 3 and the solvent tank 21, a refraction component 32 is arranged inside the L-shaped fixing plate 2, and the refraction component 32 is connected with the circulation pipe 31; An anti-precipitation device 4 is provided inside the solvent tank 21, an anti-stratification device 5 is provided above the anti-precipitation device 4, and an anti-solidification device 6 is provided above the anti-stratification device 5; The anti-sedimentation device 4 comprises an electric reciprocating screw rod 41, the bottom of which is rotatably mounted on the bottom of the inner wall of the solvent tank 21, a sleeve 42 is fixedly mounted on the outer wall of the electric reciprocating screw rod 41, a plurality of stirring screen plates 43 are equidistantly and fixedly mounted on the outer wall of the sleeve 42, a plurality of stirring screen plates 43 are provided with U-shaped grooves at the bottom, a sleeve ring 44 is passed through the outer wall of the electric reciprocating screw rod 41 and movably mounted, a plurality of connecting plates 45 are equidistantly and fixedly mounted on the outer wall of the sleeve ring 44, a cooling assembly 46 is fixedly mounted on one side of the plurality of connecting plates 45 close to the inner wall of the solvent tank 21, the outer wall of the cooling assembly 46 is slidably mounted on the inner wall of the solvent tank 21, a sliding plate 47 is passed through the outer wall of the stirring screen plate 43 and slidably mounted, a tough scraper 48 is fixedly mounted on the sliding plate 47 close to the side of the sleeve ring 44, a groove plate 49 is fixedly mounted on the outer wall of the stirring screen plate 43 close to the sleeve ring 44, an I-shaped column 410 is rotatably mounted inside the U-shaped groove of the stirring screen plate 43, and the I-shaped column 4 10 The outer wall is penetrated and fixedly installed with a spiral piece 411. Through the above cooperation, the stirring screen plate 43 is used to disturb the mixing of the bottom solution of the solvent tank 21 and the top solution, so as to prevent the precipitation of the acetic anhydride component during the long-term storage process and avoid the high detection content of the sample data extracted. At the same time, the cooling component 46 performs temperature control on the inside of the solvent tank 21 to prevent the temperature change from changing the chemical equilibrium constant of acetic anhydride, affecting the accuracy of the analysis result, and reducing the error of acetic anhydride content detection; through the above cooperation, the tough scraper 48 can effectively scrape off the acetic anhydride component precipitated on the surface of the stirring screen plate 43, ensure the cleanliness of the outer wall of the stirring screen plate 43, and facilitate the re-mixing of the acetic anhydride precipitate in the solution. In addition, the spiral piece 411 accelerates the flow rate of the solution and the precipitate through its own spiral piece 411 during the movement, shortens the fusion time of the solution and the precipitate, thereby further improving the detection speed and detection accuracy and reducing the error.

[0023] The bottom of the sleeve 42 contacts the bottom of the inner wall of the solvent tank 21 , the ring 44 is located above the sleeve 42 , a longitudinal spring is arranged between the inside of the sliding plate 47 and the stirring mesh plate 43 , the top of the sliding plate 47 contacts the bottom of the cooling assembly 46 , the groove in the groove plate 49 is located on the movement trajectory of the tough scraper 48 , and the outer walls at both ends of the I-beam 410 contact the bottom of the inner wall of the solvent tank 21 .

[0024] When in use, a solution containing acetic anhydride is stored in the solvent tank 21, and the solvent tank 21 monitors the acetic anhydride content in the solution in real time. When the solution is put into use, the acetic anhydride content of the solution in the solvent tank 21 needs to be detected. At this time, the circulation pump 3 is started, and the circulation pump 3 extracts the solution in the solvent tank 21 through a straight pipe and transports it through the circulation pipe 31. When the circulation pipe 31 transports the solution to the inside of the refractive component 32, the acetic anhydride content in the solution is detected through the refractive component 32, and then the extracted solution is sent into the solvent tank 21 through the top of the circulation pipe 31; before this, the electric reciprocating screw 41 is started, and when the electric reciprocating screw 41 rotates, it drives the sleeve 42 to rotate. The sleeve 42 drives the stirring screen plate 43 to rotate and disturb the solution at the bottom of the solvent tank 21. At the same time, when the electric reciprocating screw 41 rotates, the reciprocating spiral groove on its outer wall restricts the built-in block of the collar 44, so that when the electric reciprocating screw 41 rotates, the collar 44 can slide upward along its outer wall and reset. The collar 44 drives the connecting plate 45 to move synchronously, and the connecting plate 45 drives the cooling component 46 to move synchronously along the inner wall of the solvent tank 21, thereby expanding the range of movement of the cooling component 46. Through the above cooperation, the stirring screen plate 43 is used to disturb the mixing of the solution at the bottom of the solvent tank 21 and the solution at the top, so as to prevent the precipitation of the acetic anhydride component during long-term storage, and avoid the high content of the sample data detected. At the same time, the cooling component 46 performs temperature control on the inside of the solvent tank 21 to prevent temperature changes from changing the chemical equilibrium constant of acetic anhydride, affecting the accuracy of the analysis results, and reducing the error in acetic anhydride content detection; when the cooling component 46 moves upward, the pressure on the sliding plate 47 is gradually released, and the sliding plate 47 slides upward along the outer wall of the stirring mesh plate 43 under the elastic force of the spring, and the sliding plate 47 drives the tough scraper 48 to move synchronously. During the upward movement of the tough scraper 48, it drives the contact with the groove surface in the groove plate 49 to generate a resistance force. At this time, the tough scraper 48 is deformed and bent. As the sliding plate 47 moves, the deformed tough scraper 48 has a greater scraping force on the outer wall of the stirring mesh plate 43. Afterwards, the stirring screen plate 43 drives the I-beam column 410 to revolve along the bottom of the inner wall of the solvent tank 21. The I-beam column 410 begins to rotate along the inner wall of the U-shaped groove of the stirring screen plate 43 due to the friction force of the revolution. The I-beam column 410 drives the spiral piece 411 to revolve and rotate. Through the above cooperation, the tough scraper 48 can effectively scrape off the acetic anhydride component precipitated on the surface of the stirring screen plate 43, ensuring the cleanliness of the outer wall of the stirring screen plate 43 while facilitating the re-mixing of the acetic anhydride precipitate in the solution. In addition, the spiral piece 411 accelerates the flow rate of the solution and the precipitate through its own spiral piece 411 during the movement, shortening the fusion time of the solution and the precipitate, thereby further improving the detection speed and detection accuracy and reducing errors.

[0025] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes an anti-layer device 5; The anti-stratification device 5 includes a guide arc plate 51, a horizontal plate 52, a filter plate 53, a rotating rod 54 and a plurality of diffusion plates 55. The bottom of the guide arc plate 51 is fixedly installed at the top edge of the cooling assembly 46, the end of the horizontal plate 52 close to the solvent tank 21 is fixedly installed on the inner wall of the cooling assembly 46, the outer wall of the filter plate 53 is fixedly installed on the upper part of the solvent tank 21, the top of the rotating rod 54 passes through and is rotatably installed on the inner edge of the filter plate 53, and the plurality of diffusion plates 55 are fixedly installed on the outer wall surface of the rotating rod 54. The above coordination further ensures the uniformity of temperature control inside the solvent tank 21. At the same time, the forward and reverse rotation of the diffusion plate 55 is used to prevent floating precipitates from adhering to the inner wall of the solvent tank 21, prevent the precipitates from being difficult to dissolve in the solution within a very short preparation time, prevent the acetic anhydride content of the extracted solution sample from gradually decreasing during the bottom-up extraction process, and avoid the formation of a step-by-step detection result, which makes it difficult to judge whether the acetic anhydride content meets the standard.

[0026] The outer wall of the rotating rod 54 is connected to the inside of the horizontal plate 52 by threads. A plurality of diffusion plates 55 are evenly distributed on the outer wall of the rotating rod 54. The diffusion plates 55 are hollow in design.

[0027] The anti-stratification device 5 also includes a penetration plate 56, a slotted elastic sheet 57, a friction roller 58 and a cam 59. The outer wall of the penetration plate 56 is slidably installed inside the diffusion plate 55. The side of the penetration plate 56 away from the rotating rod 54 contacts the inner wall of the solvent tank 21, and a square groove is opened inside the penetration plate 56. The slotted elastic sheet 57 is fixedly installed between the outer wall of the diffusion plate 55 and the outer wall of the penetration plate 56. The friction roller 58 is rotatably installed inside the square groove of the penetration plate 56. The outer wall of the friction roller 58 contacts the inner wall of the diffusion plate 55. The bottom of the cam 59 is fixedly installed on the top of the rotating rod 54. Through the above cooperation, the penetration plate 56 is caused to rotate and scrape the inside of the solvent tank 21 when expanding the disturbance range of the diffusion plate 55 on the solution, thereby improving the solution disturbance effect while ensuring the cleanliness of the inner wall of the solvent tank 21, preventing the chemical components in the precipitate from corroding the solvent tank 21, and further avoiding the uneven distribution of acetic anhydride content in the solvent causing the detection result to show a gradient change.

[0028] When in use, the cooling component 46 moves upward and resets, driving the arc guide plate 51 to move synchronously. The arc guide plate 51 diffuses the cold air emitted by the cooling component 46 for a second time over a large range. At the same time, the arc guide plate 51 drives the horizontal plate 52 to move synchronously. When the horizontal plate 52 moves upward and resets, it will drive the threaded rotating rod 54 to generate a rotating force. At this time, the rotating rod 54 will realize forward and reverse rotation along the bottom of the filter plate 53, and the rotating rod 54 drives the diffusion plate 55 to move synchronously. The diffusion plate 55 disturbs the solution around the edge of the solvent tank 21 to move closer to its center. The above cooperation further ensures the uniformity of temperature control inside the solvent tank 21. At the same time, with the help of the forward and reverse rotation of the diffusion plate 55, floating sediments are prevented from adhering to the inner wall of the solvent tank 21, preventing the sediments from being difficult to dissolve in the solution within a very short preparation time, preventing the acetic anhydride content of the extracted solution sample from gradually decreasing during the bottom-up extraction process, and avoiding the formation of a step-by-step test result, which makes it difficult to judge whether the acetic anhydride content meets the standard; when the diffusion plate 55 rotates, it drives the penetration plate 56 to move synchronously. When the penetration plate 55 rotates, When the through plate 56 rotates, it is separated from the resistance of the inner wall of the solvent tank 21. At this time, the through plate 56 extends away from the rotating rod 54 under the elastic force of the slotted elastic sheet 57. At this time, the slotted elastic sheet 57 is deformed synchronously, but when the through plate 56 contacts the inner wall of the solvent tank 21 again, the through plate 56 is reset and the slotted elastic sheet 57 is squeezed to reset. This reciprocating process causes the through plate 56 to drive the friction roller 58 to synchronously move and rub along the inner wall of the diffusion plate 55. At this time, the friction roller 58 starts to rotate by friction to convert the sliding friction of the through plate 56 into rolling friction, and the rotating rod 54 drives the cam 59 to rotate synchronously along the top of the filter plate 53, and the cam 59 disturbs the liquid around the top of the filter plate 53. Through the above cooperation, the through plate 56 is caused to rotate and scrape the inside of the solvent tank 21 while expanding the disturbance range of the diffusion plate 55 on the solution, thereby improving the solution disturbance effect while ensuring the cleanliness of the inner wall of the solvent tank 21, preventing the chemical components in the precipitate from corroding the solvent tank 21, and further avoiding the uneven distribution of acetic anhydride content in the solvent causing the detection result to show a gradient change.

[0029] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes an anti-curing device 6; The anti-curing device 6 includes a transmission plate 61, a round block 62, a circular plate 63, a plurality of push rods 64 and a push plate 65. The bottom of the transmission plate 61 is slidably mounted on the top of the filter plate 53. The outer wall of the round block 62 penetrates and is fixedly mounted inside the transmission plate 61. The circular plate 63 is fixedly mounted on the outer wall of the transmission plate 61 near the axis of the filter plate 53. The plurality of push rods 64 are symmetrically and staggeredly mounted on the side of the circular plate 63 away from the axis of the filter plate 53 near the axis of the filter plate 53. The push plate 65 is fixedly mounted on the push rod 64 near the axis of the filter plate 53. At one end of the transmission plate 61, the material residue left over from feeding through the feed pipe 22 is pushed by the circular plate 63 and the push plate 65, so that the residual material can fall into the solution quickly through the filter holes of the filter plate 53 during the pushing process, thereby preventing the residue from staying on the top of the filter plate 53 for a long time to cause oxidation and solidification and block the filter holes, and preventing the solution falling from the circulation pipe 31 from being blocked and difficult to fall, thereby accelerating the volatilization rate of the acetic anhydride component in the blocked solution and increasing the maintenance cost.

[0030] A transverse spring is arranged between the bottom of the transmission plate 61 and the filter plate 53, the arc surface of the round block 62 contacts the outer wall of the cam 59, the bottom of the circular plate 63 contacts the top of the filter plate 53, one end of the push rod 64 close to the inner wall of the solvent tank 21 passes through the inside of the circular plate 63, and the bottom of the push plate 65 contacts the top of the filter plate 53.

[0031] The anti-curing device 6 also includes a fixed column 66, a plurality of inclined plates 67, a reset sheet 68 and a hollow column 69. The outer wall of the fixed column 66 is fixedly installed on the inner wall of the circular plate 63. The plurality of inclined plates 67 are symmetrically and hinged on the outer wall of the fixed column 66 through a torsion spring. The side of the inclined plate 67 close to the push rod 64 is slidably connected with the side of the push plate 65 close to the round block 62. The reset sheet 68 is fixedly installed on the side of the circular plate 63 close to the axis of the filter plate 53. One end of the hollow column 69 close to the transmission plate 61 is fixedly installed on the concave surface of the reset sheet 68. The outer wall of the push plate 65 is located on the movement trajectory of the hollow column 69. Through the above cooperation, the pushing trajectory of the push plate 65 is diffused more delicately with the help of the inclined plate 67, that is, a secondary push of the residue is achieved, the dispersion range of the residue on the top of the filter plate 53 is expanded, and the residue accumulation and clogging are further prevented and the falling speed of the residue is increased. At the same time, the adhesion strength of the residue on the top of the filter plate 53 is reduced by means of vibration force, so as to avoid the increase in removal difficulty after the circular plate 63 and other components crush the residue.

[0032] When in use, when the cam 59 rotates, its outer wall will contact and resist the outer wall arc surface of the round block 62. After the outer wall of the round block 62 is resisted, the transmission plate 61 will generate a sliding force. At this time, the transmission plate 61 will move along the top of the filter plate 53 toward its center and reset. The outer wall of the round block 62 is always close to the outer wall of the cam 59 due to the restriction of the spring. When the transmission plate 61 slides and resets, it drives the circular plate 63 to move synchronously. During the movement of the circular plate 63, the top of the filter plate 53 is rubbed and scraped. At the same time, the circular plate 63 drives the push rod 64 to move synchronously, and the push rod 64 pushes the push plate 65 The symmetrical circular plate 63 moves synchronously inside. Through the above cooperation, the circular plate 63 and the push plate 65 are used to push the material residue left over from the top of the filter plate 53 when feeding through the feed pipe 22, so that the residual material can fall into the solution quickly with the help of the filter holes of the filter plate 53 during the pushing process, so as to avoid the residue staying on the top of the filter plate 53 for a long time to cause oxidation and solidification, resulting in clogging of the filter holes, and preventing the solution falling from the circulation pipe 31 from being blocked and difficult to fall, thereby accelerating the volatilization speed of the acetic anhydride component in the blocked solution and increasing the maintenance cost; the push plate 65 moves closer to the transmission plate When the push plate 65 moves in the direction of the inclined plate 61, it drives the inclined plate 67 to move synchronously. After the inclined plate 67 is limited by the fixed column 66, the hinge axis of the inclined plate 67 is pushed by the push plate 65 to generate a rotational force. At this time, the inclined plate 67 swings along the outer wall of the push plate 65 away from the center of the fixed column 66, and then automatically resets through the torsion spring. At the same time, the push plate 65 drives the reset plate 68 to move synchronously. The reset plate 68 and the transmission plate 61 are deformed in conflict with each other. The reset plate 68 drives the hollow column 69 to move toward the push plate 65 and contact it. When the reset plate 68 is no longer conflicted, the reset plate 68 is reset. During the resetting process of the sheet 68, the hollow column 69 is driven to continuously knock the push plate 65 to generate vibration, and the circular plate 63 is caused to vibrate synchronously through the transmission of force. Through the above cooperation, the pushing trajectory of the push plate 65 is diffused more delicately with the help of the inclined plate 67, that is, the secondary push of the residue is achieved, and the dispersion range of the residue on the top of the filter plate 53 is expanded, and the accumulation and blockage of the residue are further prevented and the falling speed of the residue is increased. At the same time, the adhesion strength of the residue on the top of the filter plate 53 is reduced with the help of the vibration force, so as to avoid the increase in removal difficulty after the circular plate 63 and other components crush the residue.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for intelligently monitoring acetic anhydride content, characterized in that: The following steps are involved: S1: a solution containing acetic anhydride is stored in the solvent tank (21), and the solvent tank (21) monitors the acetic anhydride content in the solution in real time. When the solution is put into use, the acetic anhydride in the solution in the solvent tank (21) needs to be evenly mixed; S2: At this time, the circulation pump (3) is started, and the circulation pump (3) draws out the solution in the solvent tank (21) through the straight pipe and transports it through the circulation pipe (31). When the circulation pipe (31) transports the solution to the inside of the refractive assembly (32), the acetic anhydride content in the solution is detected through the refractive assembly (32), and then the drawn solution is sent into the solvent tank (21) through the top of the circulation pipe (31); S3: starting the electric reciprocating screw (41). When the electric reciprocating screw (41) rotates, it drives the sleeve (42) to rotate. The sleeve (42) drives the stirring screen (43) to rotate and disturb the solution at the bottom of the solvent tank (21).

2. A device for intelligently monitoring acetic anhydride content, used in the method for intelligently monitoring acetic anhydride content according to claim 1, characterized in that: The invention comprises a base (1), wherein an L-shaped fixing plate (2) is arranged on the top of the base (1), a solvent tank (21) is arranged inside the L-shaped fixing plate (2), a feed pipe (22) is arranged on the left side of the solvent tank (21), a circulation pump (3) is arranged on the right side of the top of the base (1), the left side of the circulation pump (3) is connected to the solvent tank (21) through a straight pipe, a circulation pipe (31) is arranged between the top of the circulation pump (3) and the solvent tank (21), a refraction component (32) is arranged inside the L-shaped fixing plate (2), and the inside of the refraction component (32) is connected to the circulation pipe (31); A stirring device (4) is arranged inside the solvent tank (21), an anti-stratification device (5) is arranged above the stirring device (4), and an anti-solidification device (6) is arranged above the anti-stratification device (5); The stirring device (4) comprises an electric reciprocating screw (41), the bottom of the electric reciprocating screw (41) is rotatably mounted on the bottom of the inner wall of the solvent tank (21), a sleeve (42) is fixedly mounted on the outer wall of the electric reciprocating screw (41), a plurality of stirring screens (43) are equidistantly and fixedly mounted on the outer wall of the sleeve (42), a plurality of the stirring screens (43) are each provided with a U-shaped groove at the bottom, a sleeve (44) is penetrated through the outer wall of the electric reciprocating screw (41) and movably mounted, a plurality of connecting plates (45) are equidistantly and fixedly mounted on the outer wall of the sleeve (44), a plurality of the connecting plates (45) are close to the solvent tank ( A cooling assembly (46) is fixedly mounted on one side of the inner wall of the solvent tank (21); the outer wall of the cooling assembly (46) is slidably mounted on the inner wall of the solvent tank (21); a sliding plate (47) is penetrated and slidably mounted on the outer wall of the stirring screen (43); a tough scraper (48) is fixedly mounted on the side of the sliding plate (47) close to the sleeve ring (44); a groove plate (49) is fixedly mounted on the outer wall of the stirring screen (43) close to the sleeve ring (44); an I-beam (410) is rotatably mounted inside the U-shaped groove of the stirring screen (43); a spiral blade (411) is penetrated and fixedly mounted on the outer wall of the I-beam (410).

3. The device for intelligently monitoring acetic anhydride content according to claim 2, characterized in that: The bottom of the sleeve (42) contacts the bottom of the inner wall of the solvent tank (21), the collar (44) is located above the sleeve (42), a longitudinal spring is arranged between the inside of the sliding plate (47) and the stirring screen (43), the top of the sliding plate (47) contacts the bottom of the cooling assembly (46), the groove in the groove plate (49) is located on the movement trajectory of the tough scraper (48), and the outer walls at both ends of the I-beam (410) contact the bottom of the inner wall of the solvent tank (21).

4. The device for intelligently monitoring acetic anhydride content according to claim 3, characterized in that: The anti-stratification device (5) comprises a guide arc plate (51), a transverse plate (52), a filter plate (53), a rotating rod (54) and a plurality of diffusion plates (55), wherein the bottom of the guide arc plate (51) is fixedly mounted on the top edge of the cooling assembly (46), the end of the transverse plate (52) close to the solvent tank (21) is fixedly mounted on the inner wall of the cooling assembly (46), the outer wall of the filter plate (53) is fixedly mounted above the inside of the solvent tank (21), the top of the rotating rod (54) passes through and is rotatably mounted on the inner edge of the filter plate (53), and the plurality of diffusion plates (55) are fixedly mounted on the outer wall surface of the rotating rod (54).

5. The device for intelligently monitoring acetic anhydride content according to claim 4, characterized in that: The outer wall of the rotating rod (54) and the interior of the horizontal plate (52) are connected by threads, and a plurality of the diffusion plates (55) are distributed at equal intervals on the outer wall of the rotating rod (54). The diffusion plates (55) are of hollow design.

6. The device for intelligently monitoring acetic anhydride content according to claim 5, characterized in that: The anti-stratification device (5) also includes a through plate (56), a slotted elastic sheet (57), a friction roller (58) and a cam (59); the outer wall of the through plate (56) is slidably mounted inside the diffusion plate (55); the side of the through plate (56) away from the rotating rod (54) contacts the inner wall of the solvent tank (21); a square groove is provided inside the through plate (56); the slotted elastic sheet (57) is fixedly mounted between the outer wall of the diffusion plate (55) and the outer wall of the through plate (56); the friction roller (58) is rotatably mounted inside the square groove of the through plate (56); the outer wall of the friction roller (58) contacts the inner wall of the diffusion plate (55); and the bottom of the cam (59) is fixedly mounted on the top of the rotating rod (54).

7. The device for intelligently monitoring acetic anhydride content according to claim 6, characterized in that: The anti-curing device (6) comprises a transmission plate (61), a round block (62), a circular plate (63), a plurality of push rods (64) and a push plate (65); the bottom of the transmission plate (61) is slidably mounted on the top of the filter plate (53); the outer wall of the round block (62) penetrates through and is fixedly mounted inside the transmission plate (61); the circular plate (63) is fixedly mounted on the outer wall of the transmission plate (61) on a side close to the axis of the filter plate (53); the plurality of push rods (64) are symmetrically and staggeredly mounted on a side close to the axis of the filter plate (53) on a side away from the axis of the filter plate (53); and the push plate (65) is fixedly mounted on an end of the push rod (64) close to the transmission plate (61) on a side close to the axis of the filter plate (53).

8. The device for intelligently monitoring acetic anhydride content according to claim 7, characterized in that: A transverse spring is provided between the bottom of the transmission plate (61) and the filter plate (53); the arc surface of the round block (62) contacts the outer wall of the cam (59); the bottom of the circular plate (63) contacts the top of the filter plate (53); one end of the push rod (64) close to the inner wall of the solvent tank (21) passes through the inside of the circular plate (63); and the bottom of the push plate (65) contacts the top of the filter plate (53).

9. The device for intelligently monitoring acetic anhydride content according to claim 8, characterized in that: The anti-solidification device (6) further comprises a fixed column (66), a plurality of inclined plates (67), a reset plate (68) and a hollow column (69); the outer wall of the fixed column (66) is fixedly mounted on the inner wall of the circular plate (63); the plurality of inclined plates (67) are symmetrically and hingedly connected to the outer wall of the fixed column (66) via torsion springs; the side of the inclined plate (67) close to the push rod (64) is slidably connected to the side of the push plate (65) close to the round block (62); the reset plate (68) is fixedly mounted on the side of the circular plate (63) close to the axis of the filter plate (53); one end of the hollow column (69) close to the transmission plate (61) is fixedly mounted on the concave surface of the reset plate (68); and the outer wall of the push plate (65) is located on the movement trajectory of the hollow column (69).

Images