Chemical automatic distillation equipment

Abstract

The application provides a chemical automatic distillation device and belongs to the technical field of crude dioctyl terephthalate. The chemical automatic distillation device comprises a tank body, a cavity separation net arranged in the tank body and used for separating a bottom cavity of the tank body into an inner cavity and an outer cavity, a pipe orifice separation net arranged at the bottom of the cavity separation net and inserted into the top end of a discharge pipe at the bottom of the tank body and used for separating an inner cavity of the discharge pipe from the outer cavity, a lower scale cleaning plate arranged between the side surface of the pipe orifice separation net and the bottom surface of the cavity separation net and in contact with the inner wall of the tank body, an upper scale cleaning plate slidingly arranged between the side surface of the cavity separation net and the top of the lower scale cleaning plate, and an intermittent rotation type guide rail assembly arranged on the side wall of the tank body. The application has the advantages of high heat transfer efficiency, anti-blocking, efficient scale and impurity cleaning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of distillation of crude dioctyl terephthalate, and particularly to an automatic chemical distillation device. BACKGROUND

[0002] In the actual industrial production process of crude dioctyl terephthalate, a distillation kettle is needed for distillation and purification. The distillation kettle includes a kettle body in the form of a tank, a reboiler arranged outside the kettle body, and when in operation, a feed pipe introduces raw materials into the kettle body from top to bottom, the raw materials are introduced into the reboiler from the bottom of the kettle body, heated and then returned to the kettle body in the form of steam, so as to heat the raw materials in the kettle body and achieve the purpose of distillation.

[0003] However, in the actual operation process of the distillation device, the distillation kettle and the reboiler are prone to scaling. Since the internal structure of the kettle body is simple and directly connected to the reboiler through a pipeline, the impurities and dirt will block the pipeline or accumulate in the reboiler after repeated circulation between the kettle body and the reboiler, which not only affects the heat transfer efficiency of the kettle body and the reboiler, but also affects the circulation of the raw materials between the kettle body and the reboiler.

[0004] In view of the above, the present application provides an automatic chemical distillation device. SUMMARY

[0005] To solve the above technical problems, the present application provides an automatic chemical distillation device.

[0006] The technical scheme of the present application is as follows:

[0007] An automatic chemical distillation device, comprising a kettle body, a cavity separation net arranged in the kettle body for separating the cavity at the bottom of the kettle body into an inner cavity and an outer cavity, a pipe opening separation net arranged at the bottom of the cavity separation net and inserted into the top end of the discharge pipe at the bottom of the kettle body for separating the inner cavity of the discharge pipe from the outer cavity, a lower scale removal plate arranged between the side surface of the pipe opening separation net and the bottom surface of the cavity separation net and in contact with the inner wall of the kettle body, an upper scale removal plate slidingly arranged between the side surface of the cavity separation net and the top of the lower scale removal plate, and an intermittent rotary guide rail assembly arranged on the side wall of the kettle body.

[0008] A central shaft is arranged in the kettle body and is connected to a rotary motor for driving the synchronous rotation of the cavity separation net, the lower scale removal plate and the upper scale removal plate, the intermittent rotary guide rail assembly includes an upper guide rail and a lower guide rail arranged in an upper and lower distribution mode, the outer side end of the upper scale removal plate is slidingly connected to the lower guide rail, and the lower guide rail is provided with a guide part in the form of a "V".

[0009] The upper scale plate locks the upper guide rail and the lower guide rail when entering the upstream end of the guide part, is limited in the guide part by the upper guide rail when moving to the downstream end of the guide part, drags the guide part to rotate a preset angle, and leaves the guide part and the downstream end of the upper guide rail after the guide part rotates the preset angle.

[0010] Further, the upper guide rail comprises an upper swivel ring and an inner convex part arranged on the inner surface of the upper swivel ring, the lower guide rail comprises a lower swivel ring, the guide part is arranged on the inner surface of the lower swivel ring, and the upper swivel ring and the lower swivel ring are both rotationally arranged on the inner wall surface of the tank body, and the central angle of the inner convex part is greater than the central angle of the guide part.

[0011] Further, the central shaft is fixedly arranged with a scale cleaning support below the lower swivel ring, the top of the upper scale plate is slidingly arranged on the scale cleaning support, and the scale cleaning support is arranged with a scale cleaning spring providing elastic force for the outward displacement of the upper scale plate.

[0012] The inner wall of the tank body is fixedly arranged with an annular guide rail, the bottom of the annular guide rail is rotationally arranged with a hanging ring, the scale cleaning support is fixedly arranged at the bottom of the hanging ring, the outer side of the upper swivel ring is arranged with a liftable arc-shaped rack, the annular guide rail is arranged with a tooth groove above the arc-shaped rack, the outer side of the lower swivel ring is arranged with a liftable lifting block, the outer surface of the lifting block is equidistantly arranged with an upper insertion part, the inner surface of the arc-shaped rack is arranged with an insertion slot for the insertion of the upper insertion part, the arc-shaped rack and the lifting block are in close contact, and the bottom of the arc-shaped rack and the upper insertion part can be extended from the bottom of the annular guide rail.

[0013] Further, the guide part is arranged with a guide groove with two open ends, the outer side of the top of the upper scale plate is arranged with a guide rod, the upstream end and the downstream end of the guide groove are respectively arranged with an inlet and an outlet, the inner surface of the inner convex part covers the inlet and the outlet in the radial direction, the end of the guide part corresponding to the inner side wall of the inlet and the outlet is connected with the lower swivel ring, and the end of the guide part corresponding to the outer side wall of the inlet and the outlet forms a gap for the guide rod to pass between the inner wall surface of the lower swivel ring.

[0014] Further, the guide groove is arranged with a limiting groove on the inner side wall corresponding to the connection of the outlet and the lower swivel ring, the downstream end of the inner convex part is arranged with a limiting block matched with the limiting groove, and when the limiting block enters the limiting groove, the downstream end surface of the limiting block is flush with the inner side wall surface of the outlet, so that the outlet is exposed.

[0015] Further, the upper scale-removing plate is provided with a through slot, and the upper scale-removing plate is closed by the upper scale-removing plate when the upper scale-removing plate is located at the outermost position and the innermost position.

[0016] Further, the upper scale-removing plate is provided with a through slot, and the upper scale-removing plate is closed by the upper scale-removing plate when the upper scale-removing plate is located at the outermost position and the innermost position.

[0017] Further, the top of the annular guide rail is an inclined surface with the inner end downwardly inclined, and the annular flow channel is fixedly installed on the inner wall of the tank body above the annular guide rail, a circle of discharge holes are equidistantly arranged on the inner side of the bottom of the annular flow channel, the steam return pipe is inserted into one side of the tank body, the reboiler is connected to the outer side of the steam return pipe, the discharge pipe is in communication with the reboiler, and the annular flow channel is located below the steam return pipe.

[0018] Further, a plurality of blowdown pipes are arranged on the periphery of the bottom of the tank body outside the discharge pipe, the top openings of the plurality of blowdown pipes are located within the circumferential track of the lower scale-removing plate, the lower scale-removing plate is rotatably arranged on the pipe opening screen, the inner end surface of the lower scale-removing plate is in contact with the pipe opening screen, the top end of the pipe opening screen is rotatably connected to the cavity screen, and the pipe opening screen is fixedly arranged on the top end of the discharge pipe.

[0019] Further, the upper scale-removing plate and the lower scale-removing plate below the upper scale-removing plate form a scale-removing plate body unit, the scale-removing plate body unit is provided with a plurality of groups and is centrally symmetrically distributed, and the guide part is provided in the same number as the scale-removing plate body unit.

[0020] The present application has the following beneficial effects:

[0021] 1. The cavity screen separates the inner cavity of the tank body into an outer cavity and an inner cavity, and the pipe opening screen cooperates with the cavity screen to separate the discharge pipe from the outer cavity, so that impurities and scale can be prevented from entering the discharge pipe and being separated in the outer cavity, the discharge pipe can be prevented from being blocked, and the effect of collecting impurities and scale can be achieved to realize centralized cleaning of the impurities and scale by the blowdown pipe.

[0022] 2. The lower scale-removing plate continuously cleans the inner bottom wall of the tank body and the surface of the pipe opening screen, cooperates with the upper scale-removing plate to clean the inner side wall of the tank body, and cooperates with the upper scale-removing plate and the lower scale-removing plate to stir, so that the scale and impurities on the inner wall of the tank body are continuously stirred while being cleaned, the heat conduction efficiency in the tank body is improved, and the scale and impurities are prevented from being accumulated.

[0023] 3. By setting the intermittent rotating guide rail assembly and the movement of the upper scale removal plate, the upper scale removal plate can realize radial displacement and clean the inner wall of the tank body comprehensively, without cleaning dead zone, improving the cleaning effect. At the same time, the radial displacement of the upper scale removal plate improves the turbulence of the raw materials in the tank body, further improves the effect of preventing scaling and impurity deposition and better cleaning scaling. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a sectional view of the chemical automatic distillation equipment of the present application;

[0025] Figure 2 is a sectional view of the chemical automatic distillation equipment of the present application Figure 1 is another view of the chemical automatic distillation equipment of the present application;

[0026] Figure 3 is a sectional view of the chemical automatic distillation equipment of the present application Figure 2 is an enlarged view of A in the chemical automatic distillation equipment of the present application;

[0027] Figure 4 is a partial schematic view of the chemical automatic distillation equipment of the present application;

[0028] Figure 5 is an enlarged view of B in the chemical automatic distillation equipment of the present application; Figure 4

[0029] Figure 6 is a partial schematic view of the chemical automatic distillation equipment of the present application; Figure 4

[0030] Figure 7 is a sectional view of the annular guide rail of the chemical automatic distillation equipment of the present application after being cut open; Figure 4

[0031] Figure 8 is an enlarged view of C in the chemical automatic distillation equipment of the present application; Figure 7

[0032] Figure 9 is an enlarged view of D in the chemical automatic distillation equipment of the present application; Figure 7

[0033] Figure 10 is a partial schematic view of the annular guide rail of the chemical automatic distillation equipment of the present application;

[0034] Figure 11 is a schematic view of the suspension ring of the chemical automatic distillation equipment of the present application;

[0035] Figure 12 is a partial schematic view of the upper guide rail, the lower guide rail and the annular guide rail of the chemical automatic distillation equipment of the present application; ​​​​​

[0036] Figure 13 is a partial view of the E in the chemical automatic distillation equipment of the present application. Figure 12

[0037] Figure 14 is a partial view of the lower rotating ring and the outer convex part of the chemical automatic distillation equipment of the present application.

[0038] Figure 15 is a partial view of the F in the chemical automatic distillation equipment of the present application. Figure 14

[0039] Figure 16 is a schematic view of the arc-shaped rack and the lifting block of the chemical automatic distillation equipment of the present application.

[0040] Figure 17 is a schematic view of the lifting block of the chemical automatic distillation equipment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0042] Please refer to the chemical automatic distillation equipment provided by the embodiments of the present application shown in Figures 1 to 17 , which comprises a tank body 1, a cavity partition net 2, a pipe opening partition net 3, a lower scale removal plate 4, an upper scale removal plate 5 and an intermittent rotation type guide rail assembly.

[0043] The bottom end of the tank body 1 is provided with a discharge pipe, and the bottom part of the cavity of the tank body 1 is a heating zone. The cavity partition net 2 is arranged in the tank body 1, which divides the bottom cavity of the tank body 1 into an inner cavity and an outer cavity. The cavity partition net 2 is used to prevent the wall surface of the tank body 1 from scaling or impurities from entering the inner cavity, and to separate the scaling or impurities in the outer cavity.

[0044] The pipe opening partition net 3 is arranged at the bottom of the cavity partition net 2, and the bottom end of the pipe opening partition net 3 is inserted into the top end of the discharge pipe. The pipe opening partition net 3 is used to separate the inner cavity of the discharge pipe and the outer cavity, so as to prevent the scaling and impurities from entering the discharge pipe, causing the discharge pipe to be blocked or increasing the scaling degree of the discharge pipe or being transported to the downstream equipment through the discharge pipe.

[0045] The lower scale removal plate 4 is arranged between the side surface of the pipe opening partition net 3 and the bottom surface of the cavity partition net 2. Specifically, one end of the lower scale removal plate 4 close to the center of the tank body 1 is tightly attached to the outer surface of the pipe opening partition net 3, the top part of the lower scale removal plate 4 is in contact with the lower surface of the cavity partition net 2, and the bottom part of the lower scale removal plate 4 is in contact with the inner wall of the tank body 1.

[0046] ​​The upper scale-removing plate 5 is slidingly arranged at the side of the cavity partition net 2, and the bottom of the upper scale-removing plate 5 is slidingly arranged at the top of the lower scale-removing plate 4, so that the upper scale-removing plate 5 is displaced between the outer cavity and the inner cavity by radial sliding, and when the upper scale-removing plate 5 is located at the outermost position, the outer side surface thereof is in contact with the inner wall of the tank body 1.

[0047] The intermittent rotary guide rail assembly is arranged on the side wall of the tank body 1, and the upper scale-removing plate 5 is connected with the intermittent rotary guide rail assembly, in particular:

[0048] The center shaft 6 is arranged in the tank body 1 and is used to drive the synchronous rotation of the cavity partition net 2, the lower scale-removing plate 4 and the upper scale-removing plate 5. In the process of rotation of the lower scale-removing plate 4, the raw materials in the heating area at the bottom of the inner cavity of the tank body 1 are stirred to improve heat conduction, and the scale on the inner bottom wall of the tank body 1 is continuously removed, so that the structure and impurities are continuously moved, the impurities are prevented from depositing and accumulating, the flow of the raw material conveying of the tank body 1 is improved, and the tank body 1 is prevented from being blocked and overheated due to uneven heat conduction caused by a large amount of scale.

[0049] The intermittent rotary guide rail assembly includes upper and lower guide rails arranged in an up-down manner, and the outer end of the upper scale-removing plate 5 is slidingly connected with the lower guide rail, and the lower guide rail is provided with a guide portion 7 in the shape of a "V", wherein:

[0050] When the upper scale-removing plate 5 enters from the upstream end of the guide portion 7, the upper and lower guide rails are locked, at this time, the upper and lower guide rails are positioned in the circumferential direction of the tank body 1, so that the upper scale-removing plate 5 will enter the guide portion 7 and move along the guide portion 7 in the process of continuous movement.

[0051] Further, in the process of movement of the upper scale-removing plate 5 from the upstream end to the downstream end of the guide portion 7, a radial reciprocating displacement process is carried out, that is, the upper scale-removing plate 5 will first enter the inner cavity from the outer cavity, and then return to the outer cavity from the inner cavity.

[0052] At this time, the radial displacement of the upper scale-removing plate 5 cooperates with its circumferential displacement, which can better stir the mixture of raw materials in the outer cavity and the inner cavity, further improve the uniformity of heat conduction, and increase the turbulence of the raw materials in the tank body 1, improve the randomness of the raw materials flushing the inner wall of the tank body 1, and further make the scale and impurities on the inner wall of the tank body 1 more turbulent, improve the characteristics of the scale or impurities being separated from the tank body 1 and always keeping disordered movement in the outer cavity, so as to better prevent scale accumulation and impurity deposition.

[0053] When the upper scale-removing plate 5 moves to the downstream end of the guide portion 7, it is limited in the guide portion 7 by the upper guide rail, at this time, the upper scale-removing plate 5 cannot be separated from the guide portion 7, so that the upper scale-removing plate 5 in circumferential movement will drag the guide portion 7 to rotate, at this time, when the guide portion 7 rotates by a predetermined angle, the upper scale-removing plate 5 leaves the downstream end of the guide portion 7 and the upper guide rail.

[0054] At this time, by the cooperation among the upper scale plate 5, the upper guide rail and the guide part 7, the position of the guide part 7 can be switched while the upper scale plate 5 makes reciprocating displacement inside and outside once, so that the upper scale plate 5 will not be separated from the inner wall surface of the tank body 1 at a fixed position in the circumferential direction of the tank body 1, and further, it is ensured that the upper scale plate 5 can clean the scale and impurities at all positions of the inner wall surface of the tank body 1.

[0055] In the embodiment of the present application, the upper guide rail comprises an upper swivel ring 8 and an inner convex part 9 arranged on the inner surface of the upper swivel ring 8, and the lower guide rail comprises a lower swivel ring 10, and the guide part 7 is arranged on the inner surface of the lower swivel ring 10. The upper swivel ring 8 and the lower swivel ring 10 are both rotationally arranged on the inner wall surface of the tank body 1, and the central angle of the inner convex part 9 is greater than the central angle of the guide part 7.

[0056] The central shaft 6 is fixedly arranged with a scale cleaning support 11, and the scale cleaning support 11 is arranged below the lower swivel ring 10. The top of the upper scale plate 5 is slidingly arranged on the scale cleaning support 11, and the scale cleaning support 11 is arranged with a scale cleaning spring 12 for providing elastic force for the outward displacement of the upper scale plate 5. When the scale plate is displaced inward, the scale cleaning spring 12 is compressed.

[0057] The inner wall of the tank body 1 is fixedly arranged with an annular guide rail 13, and the bottom of the annular guide rail 13 is rotationally arranged with a hanging ring 14, and the scale cleaning support 11 is fixedly arranged on the bottom of the hanging ring 14. The hanging ring 14 suspends the outer end of the scale cleaning support 11 to cooperate with the central shaft 6 to improve the stability of the scale cleaning support 11.

[0058] The upper swivel ring 8 and the lower swivel ring 10 are both rotationally arranged on the annular guide rail 13. The outer side of the upper swivel ring 8 is arranged with an arc-shaped rack 15 which can be lifted and lowered. The annular guide rail 13 is arranged with a tooth groove 16 above the arc-shaped rack 15. The outer side of the lower swivel ring 10 is arranged with a lifting block 28 which can be lifted and lowered. The outer surface of the lifting block 28 is equidistantly arranged with an upper insertion part 26. The inner surface of the arc-shaped rack 15 is arranged with an insertion slot 27 for the insertion of the upper insertion part. The arc-shaped rack 15 and the lifting block 28 are in close contact. The bottom of the arc-shaped rack 15 and the upper insertion part can be extended from the bottom of the annular guide rail 13.

[0059] Further, the guide part 7 is arranged with a guide slot with two open ends. The outer side end of the top of the upper scale plate 5 is arranged with a guide rod 17. The upstream end and the downstream end of the guide slot are respectively arranged with an inlet and an outlet. When the upper scale plate 5 passes through the guide part 7, it enters the guide slot from the inlet and exits the guide slot from the outlet. When the upper scale plate 5 moves to the upstream end of the guide part 7 and the bottom of the arc-shaped rack 15 and the lifting block 28 are both lifted by the scale cleaning support 11 so that the arc-shaped rack 15 engages the tooth groove 16 and the upper insertion part 26 is inserted into the insertion slot 27, the guide rod 17 is located in the inlet.

[0060] Wherein: the inner surface of the inner convex part 9 covers the entrance and the exit in the radial direction, and the end of the guide part 7 corresponding to the inner side wall of the entrance and the exit is connected with the lower rotating ring 10, and the end of the guide part 7 corresponding to the outer side wall of the entrance and the exit forms a gap between the inner wall surface of the lower rotating ring 10 for guiding the rod 17 to pass through.

[0061] Specifically, when the upper scaling plate 5 moves to the downstream end of the guide groove, the inner surface of the inner convex part 9 blocks the exit, so that the guide rod 17 cannot directly enter the exit to leave the guide groove. And the scaling support 11 leaves the bottom of the lifting block 28, and the lifting block 28 falls so that the upper insertion part 26 is separated from the bottom of the insertion groove 27. Further, the upper scaling plate 5 drives the guide part 7 to rotate, and the arc-shaped rack 15 keeps engaging the tooth groove 16 during the whole process. Until the guide part 7 rotates to the downstream end of the exit exposed from the inner convex part 9, the guide rod 17 enters the exit and finally separates from the guide part 7, and the scaling support 11 separates from the bottom of the arc-shaped rack 15 connected with the upper rotating ring 8, so that the arc-shaped rack 15 connected with the upper rotating ring 8 is separated from the tooth groove 16.

[0062] Further, the guide groove is provided with a limiting groove 18 on the inner side wall corresponding to the connection of the exit and the lower rotating ring 10, and the downstream end of the limiting block 19 of the inner convex part 9 is provided with a limiting groove 18 matched with the limiting block 19, and when the limiting block 19 enters the limiting groove 18, the downstream end surface of the limiting block 19 is flush with the inner wall surface of the exit so that the exit is exposed. And at this time, since the upper rotating ring 8 is positioned by the engagement of the arc-shaped rack 15 and the tooth groove 16, the limiting block 19 has the function of limiting the guide part 7, so that the guide rod 17 can better separate from the guide part 7.

[0063] Wherein, in the embodiment of the application, the scaling support 11 is provided with a through sliding groove 20, and the outer side end of the scaling support 11 is closed. The top of the upper scaling plate 5 is provided with a sliding block 21 in inverted "T" shape, and the top of the upper scaling plate 5 is connected with the bottom of the sliding block 21. The two ends of the scaling spring 12 are respectively connected with the sliding block 21 and the scaling support 11. The top of the sliding block 21 is provided with a displacement groove 22, the guide rod 17 is slidingly arranged in the displacement groove 22, and the displacement groove 22 is provided with a force storage spring 23 for providing the guide rod 17 with an outward elastic force.

[0064] At this time, after the displacement groove 22, when the guide rod 17 is located at the downstream end of the guide groove and drags the guide part 7 to rotate, the force storage spring 23 is compressed, and the outer side end of the upper scaling plate 5 is in contact with the inner wall of the tank 1 during the process. After the exit is exposed from the downstream end of the inner convex part 9, the guide rod 17 enters the exit and leaves the guide part 7 by displacing outwardly in the displacement groove 22 under the action of the force storage spring 23.

[0065] The cavity partition net 2 is provided with a through slot for displacement of the upper scale removing plate 5, and the through slot is closed by the upper scale removing plate 5 when the upper scale removing plate 5 is located at the outermost position and the innermost position, and the top end of the cavity partition net 2 is fixedly connected to the lower surface of the scale removing support 11.

[0066] The top of the annular guide rail 13 is an inclined surface with the inner end inclined downward, and an annular flow channel 24 is arranged above the annular guide rail 13 and fixedly installed on the inner wall of the tank body 1. A circle of discharge holes are arranged at the bottom of the annular flow channel 24 at equal intervals on the inner side, a steam return pipe is inserted into one side of the tank body 1, a reboiler is connected to the outer side of the steam return pipe, a discharge pipe is in communication with the reboiler, and the annular flow channel 24 is located below the steam return pipe.

[0067] At this time, the raw materials introduced into the tank body 1 from the feed pipe fall into the outer cavity along the inner wall of the tank body 1 after passing through the annular flow channel 24 and are mixed with the raw materials in the inner cavity. In this process, on the one hand, the uniformity of heat conduction in the tank body 1 is improved, and on the other hand, the scale or impurities carried in the raw materials are separated in the outer cavity. This prevents the scale and impurities from blocking the discharge pipe or entering the reboiler to intensify the degree of scale in the reboiler.

[0068] A plurality of blowdown pipes 25 are arranged at the periphery of the bottom of the tank body 1, and the top openings of the plurality of blowdown pipes 25 are located within the circumferential track range of the lower scale removing plate 4. The lower scale removing plate 4 is rotatably arranged on the pipe opening partition net 3, and the inner end surface of the lower scale removing plate 4 is in contact with the pipe opening partition net 3. The top end of the pipe opening partition net 3 is rotatably connected to the cavity partition net 2, and the pipe opening partition net 3 is fixedly arranged at the top end of the discharge pipe. The blowdown pipes 25 are used to discharge the impurities and scale accumulated at the bottom of the tank body 1 after the valve is opened. The lower scale removing plate 4 has the effect of cleaning the surface of the pipe opening partition net 3 during rotation.

[0069] The upper scale removing plate 5 and the lower scale removing plate 4 below it form a scale removing plate unit, the scale removing plate unit is provided with a plurality of groups and is centrally symmetrically distributed, and the guide part 7 is arranged in the same number as the scale removing plate unit.

[0070] In the embodiment, the scale removing plate unit is provided with three groups, the included angle between two adjacent scale removing plate units is 120°, the central angle of the guide part 7 is 40°, and the central angle of the inner convex part 9 is 80°.

[0071] Before the guide rod 17 enters the entrance of the guide part 7, the upstream end of the inner convex part 9 is pushed to make the upper rail rotate until the guide rod 17 enters the entrance of the guide part 7. At this time, the arc-shaped rack 15 cooperates with the tooth groove 16, and the upper insertion part 26 on the lifting block 28 cooperates with the insertion slot 27, so that the upper rail and the guide part 7 are locked, and during the displacement of the guide rod 17 in the guide groove, the dirt cleaning support 11 is supported on the bottom of the arc-shaped rack 15 and the lifting block 28 and keeps the locking state of the upper rail and the guide part 7. In this way, the upper rail and the guide part 7 are alternately and intermittently displaced, so that the upper dirt cleaning plate 5 can clean all parts of the inner wall surface of the tank body 1.

[0072] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic distillation apparatus for chemical industry, characterized by comprising: The utility model relates to a tank body (1), set up in tank body (1) are used for the cavity screen (2) of tank body (1) bottom cavity is divided into inner cavity and outer cavity, the pipe orifice screen (3) of setting in cavity screen (2) bottom and bottom end insertion to tank body (1) bottom discharge pipe top end is used for the pipe orifice screen (3) between the side of cavity screen (2) and the bottom surface of cavity screen (2) and the bottom of tank body (1) contact lower scale removal plate (4), the upper scale removal plate (5) of sliding setting in the side of cavity screen (2) and the top of lower scale removal plate (4) between, intermittent rotating guide rail assembly is set up on the side wall of tank body (1); The tank body (1) is rotatably provided with a central shaft (6) connected with a rotating motor and used to drive the cavity screen (2), the lower scale removal plate (4) and the upper scale removal plate (5) to rotate synchronously, and the intermittent rotating guide rail assembly comprises upper and lower guide rails arranged in a vertical manner, the outer side end of the upper scale removal plate (5) is in sliding fit with the lower guide rail, and the lower guide rail is provided with a "V"-shaped guide portion (7); The upper guide rail comprises an upper rotating ring (8) and an inner convex portion (9) arranged on the inner surface of the upper rotating ring (8), and the lower guide rail comprises a lower rotating ring (10), the guide portion (7) is mounted on the inner surface of the lower rotating ring (10), and the upper rotating ring (8) and the lower rotating ring (10) are both rotatably mounted on the inner wall surface of the tank body (1), and the central angle of the inner convex portion (9) is greater than that of the guide portion (7); The central shaft (6) is fixedly provided with a scale removal bracket (11), the scale removal bracket (11) is located below the lower rotating ring (10), the top of the upper scale removal plate (5) is slidingly arranged on the scale removal bracket (11), and the scale removal bracket (11) is provided with a scale removal spring (12) for providing elastic force for the outward displacement of the upper scale removal plate (5); An annular guide rail (13) is fixedly arranged on the inner wall of the tank body (1), the bottom of the annular guide rail (13) is rotatably provided with a hanging ring (14), the scale removal bracket (11) is fixedly arranged at the bottom of the hanging ring (14), the upper rotating ring (8) and the lower rotating ring (10) are both rotatably arranged on the annular guide rail (13), the outer side of the upper rotating ring (8) is provided with a liftable arc-shaped rack (15), the annular guide rail (13) is provided with a gear slot (16) located above the arc-shaped rack (15), the outer side of the lower rotating ring (10) is provided with a liftable lifting block (28), the outer surface of the lifting block (28) is equidistantly provided with an upper insertion portion (26), the inner surface of the arc-shaped rack (15) is provided with an insertion slot (27) for the insertion of the upper insertion portion, the arc-shaped rack (15) and the lifting block (28) are in close contact, and the bottom of the arc-shaped rack (15) and the upper insertion portion can be extended from the bottom of the annular guide rail (13). The guide part (7) is provided with a guide groove with two open ends, the outer side end of the top of the upper scale-removing plate (5) is provided with a guide rod (17), the upstream end and the downstream end of the guide groove are respectively provided with an inlet and an outlet, the inner surface of the inner convex part (9) covers the inlet and the outlet in the radial direction, the end of the guide part (7) corresponding to the inner side wall of the inlet and the outlet is connected with the lower rotating ring (10), and the end of the guide part (7) corresponding to the outer side wall of the inlet and the outlet forms a gap between the inner wall surface of the lower rotating ring (10) for the guide rod (17) to pass through. Before the guide rod (17) enters the inlet of the guide part (7), the upstream end of the inner convex part (9) is pushed to make the upper guide rail rotate until the guide rod (17) enters the inlet of the guide part (7), when the upper scale-removing plate (5) moves to the upstream end of the guide part (7) and the arc-shaped rack (15) and the upper inserting part (26) are all lifted by the scale-removing support (11), at this time, the arc-shaped rack (15) engages the tooth groove (16) and the upper inserting part (26) is inserted into the insertion slot (27), the guide rod (17) is located in the inlet, so that the upper scale-removing plate (5) is locked when entering from the upstream end of the guide part (7), and the upper guide rail and the lower guide rail are both positioned in the circumferential direction of the tank body (1), so that the upper scale-removing plate (5) will enter the guide part (7) and move along the guide part (7) in the process of continuous movement. When the upper scale-removing plate (5) moves to the downstream end of the guide groove, the inner surface of the inner convex part (9) blocks the outlet, so that the guide rod (17) cannot directly enter the outlet to leave the guide groove, and the scale-removing support (11) leaves the bottom of the lifting block (28), the lifting block (28) falls to make the upper inserting part (26) separate from the bottom of the insertion slot (27), and then the upper scale-removing plate (5) is limited in the guide part (7) and drags the guide part (7) to rotate by a preset angle, and the arc-shaped rack (15) remains in the state of engaging the tooth groove (16) in the whole process of rotating the guide part (7) by the upper scale-removing plate (5). When the guide part (7) rotates to the outlet exposed from the downstream end of the inner convex part (9), the guide rod (17) enters the outlet and finally separates from the guide part (7), the upper scale-removing plate (5) leaves from the downstream end of the guide part (7) and the upper guide rail, and the scale-removing support (11) separates from the bottom of the arc-shaped rack (15) connected with the upper rotating ring (8), so that the arc-shaped rack (15) connected with the upper rotating ring (8) is separated from the tooth groove (16).

2. The automatic distillation apparatus according to claim 1, wherein The inner side wall of the guide groove corresponding to the connection position of the outlet and the lower rotating ring (10) is provided with a limiting groove (18), the downstream end of the inner convex part (9) is provided with a limiting block (19) matched with the limiting groove (18), and when the limiting block (19) enters the limiting groove (18), the downstream end surface of the limiting block (19) is flush with the inner side wall surface of the outlet, so that the outlet is exposed.

3. The automatic distillation apparatus according to claim 1, wherein The clean dirt support (11) is provided with a through sliding groove (20), the top of the upper clean dirt plate (5) is provided with an inverted "T" shaped sliding block (21), the top of the upper clean dirt plate (5) is connected with the bottom of the sliding block (21), the two ends of the clean dirt spring (12) are connected with the sliding block (21) and the clean dirt support (11) respectively, the top of the sliding block (21) is provided with a displacement groove (22), the guide rod (17) is slidingly arranged in the displacement groove (22), and the displacement groove (22) is provided with a force storage spring (23) for providing an outward elastic force for the guide rod (17).

4. The automatic distillation apparatus according to claim 1, wherein The cavity separation net (2) is provided with a through groove for displacement of the upper clean dirt plate (5), and when the upper clean dirt plate (5) is located at the outermost and innermost positions, the through groove is closed by the upper clean dirt plate (5), and the top end of the cavity separation net (2) is fixedly connected to the lower surface of the clean dirt support (11).

5. The automatic distillation apparatus according to claim 1, wherein The top of the annular guide rail (13) is an inclined surface with the inner side end inclined downward, an annular flow channel (24) is arranged above the annular guide rail (13) and fixedly installed on the inner wall of the tank body (1), a row of discharge holes are arranged at the inner side of the bottom of the annular flow channel (24) at equal intervals, a steam return pipe is inserted into one side of the tank body (1), a reboiler is connected to the outer side of the steam return pipe, a discharge pipe is in communication with the reboiler, and the annular flow channel (24) is located below the steam return pipe.

6. The automatic distillation apparatus according to claim 1, wherein A plurality of blowdown pipes (25) are arranged at the periphery of the discharge pipe at the bottom of the tank body (1), the top openings of the plurality of blowdown pipes (25) are located within the circumferential track range of the lower clean dirt plate (4), the lower clean dirt plate (4) is rotatably arranged on the pipe opening separation net (3), the inner end surface of the lower clean dirt plate (4) is in contact with the pipe opening separation net (3), the top end of the pipe opening separation net (3) is rotatably connected with the cavity separation net (2), and the pipe opening separation net (3) is fixedly arranged at the top end of the discharge pipe.

7. An automatic distillation apparatus for chemical industry according to any one of claims 1 to 6, characterized in that, The upper clean dirt plate (5) and the lower clean dirt plate (4) below it form a clean dirt plate body unit, the clean dirt plate body unit is provided with a plurality of groups and is centrally symmetrically distributed, and the guide part (7) is arranged in the same number as the clean dirt plate body unit.

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