A spherical graphite purification temperature control system

Abstract

The present application relates to a temperature control system for spherical graphite purification, belonging to the technical field of spherical graphite purification. The temperature control system includes: a purification tank installed in a purification workshop and used as a container for the spherical graphite purification reaction; a main heating pipe with one end connected to a boiler for supplying steam from the outside; a main solenoid valve connected to the main heating pipe; a heating pipe wound around the outer wall of the purification tank for heating the purification tank, with one end connected to the other end of the main heating pipe and the other end connected to a condenser outside; a temperature sensor installed in the purification tank for detecting the temperature inside the purification tank; and an industrial control computer connected to the temperature sensor and the main solenoid valve, and used for controlling the flux of the main solenoid valve in response to the input temperature curve and based on the temperature value detected by the temperature sensor. Since when heating the purification tank, the industrial control computer can automatically adjust the heating temperature according to a pre-set temperature curve, with a small error, the purification accuracy is improved.

Description

Technical Field

[0001] This application relates to the technical field of spherical graphite purification, and in particular, to a temperature control system for spherical graphite purification. Background Art

[0002] Spherical graphite is made from high-quality natural flake graphite as raw material, and the surface of the graphite is modified by an advanced processing technology to produce graphite products with different fineness and an elliptical spherical shape. In the processing of spherical graphite, first, the graphite dry concentrate is processed through procedures such as coarse crushing, trimming, and magnetic separation in the spherical graphite workshop to form the initial product, spherical graphite, and then it enters the purification workshop and becomes spherical graphite (high purity) after high-temperature purification.

[0003] In related technologies, the purification of spherical graphite mainly includes: flotation method, acid-base method, hydrofluoric acid method, high-temperature method, etc. Currently, the acid-base method is usually used to purify spherical graphite. The spherical graphite is placed in a purification tank, and then, according to the measured impurity content and the amount of spherical graphite in the laboratory, a certain mass of acidic substances (such as hydrochloric acid, sulfuric acid, etc.) is added to the purification tank, and stirring and heating are carried out to purify the spherical graphite. During the purification process, since the heating temperature required in each stage is different and the heating temperature changes, currently, only experienced staff are on duty to adjust the heating temperature, resulting in low purification accuracy. Summary of the Invention

[0004] In order to improve the purification accuracy, this application provides a temperature control system for spherical graphite purification, and adopts the following technical solutions:

[0005] A temperature control system for spherical graphite purification, comprising:

[0006] A purification tank, installed in the purification workshop, and used as a container for the spherical graphite purification reaction;

[0007] A heating main pipe, one end of which is connected to a boiler for providing steam outside; a main solenoid valve is connected to the heating main pipe;

[0008] Heating pipes, wound around the outer wall of the purification tank, used to heat the purification tank, one end of which is connected to the other end of the heating main pipe, and the other end is connected to a condenser outside;

[0009] A temperature sensor, installed in the purification tank, and used to detect the temperature inside the purification tank;

[0010] An industrial control computer, connected to the temperature sensor and the main solenoid valve, and used to control the flow rate of the main solenoid valve in response to the input temperature curve and based on the temperature value detected by the temperature sensor.

[0011] By adopting the above technical solution, when heating the purification tank, the industrial control computer heats according to the temperature curve. For example, the temperature curve is divided into two heating stages, and the second stage is lower than the first stage; when the temperature sensor detects that the temperature reaches the end value of the first stage, the industrial control computer controls the main solenoid valve to reduce the flux or shut off, so as to heat the purification tank according to the second stage; since when heating the purification tank, the heating temperature can be automatically adjusted by the industrial control computer according to the preset temperature curve, and the error is small, the purification accuracy is improved.

[0012] Optionally, a plurality of the purification tanks are arranged side by side, and the number of the heating pipes and the temperature sensors is the same as that of the purification tanks; the adjacent heating pipes are connected end to end, and the last heating pipe is connected to the condenser;

[0013] The temperature control system further includes:

[0014] An auxiliary heating pipe, one end of which is connected to the main heating pipe, and the other end is connected to the heating pipe; the auxiliary heating pipe is arranged on the second purification tank to the last purification tank; an auxiliary solenoid valve is connected to the auxiliary heating pipe, and the auxiliary solenoid valve is connected to the industrial control computer.

[0015] By adopting the above technical solution, when heating the purification tank, the steam can heat all the purification tanks in sequence. Since the steam first passes through the first purification tank, the first purification tank will quickly heat up. When the steam passes through the second purification tank and the subsequent purification tanks in sequence, due to heat exchange of the steam, the temperature may decrease and cannot reach the temperature required by the subsequent purification tanks. Therefore, when the temperature sensor detects that the temperature is lower than the temperature required by the purification tank, the industrial control computer can control the corresponding auxiliary solenoid valve to open, so that part of the steam in the main heating pipe directly enters the corresponding purification tank, so that the purification tank can quickly reach the required temperature.

[0016] Optionally, the main heating pipe includes:

[0017] A plurality of first heating sub-pipes;

[0018] A second heating sub-pipe, one end of which is connected to the heating pipe on the first purification tank, and the main solenoid valve is arranged on the second heating sub-pipe;

[0019] A plurality of transition blocks are each provided with an air inlet and an air outlet, and the air inlet is communicated with the air outlet; wherein, the air inlet is connected to the first heating sub-pipe, one air outlet is connected to the other end of the second heating sub-pipe, and the remaining air outlets are connected to the auxiliary heating pipe; sliding grooves are formed in the side walls on both sides of the transition block, one end of the sliding groove is communicated with the outside, and one end of the first heating sub-pipe is slidably connected in the sliding groove;

[0020] The limiting plate is rotatably connected to the transition block and is used to open and close the sliding groove; a nut is fixedly connected to the transition block; a jack is provided on the side wall of the limiting plate;

[0021] The locking bolt is threadedly connected to the nut and can be inserted into the jack.

[0022] By adopting the above technical solution, when installing the first heating sub-tube, the limiting plate opens the sliding groove to enable the first heating sub-tube to slide in the sliding groove. When the first heating sub-tube is communicated with the air inlet, the limiting plate is rotated to close the sliding groove, and then the locking bolt is rotated to enable the locking bolt to be inserted into the jack, realizing the locking of the limiting plate, thereby facilitating the installation and disassembly of the heating sub-tube.

[0023] Optionally, the bottom wall of the sliding groove is inclined, and the transition block is provided with a disassembly port communicated with the sliding groove, and the disassembly port is arranged at the lowest end of the inclined bottom wall of the sliding groove;

[0024] The temperature control system further includes:

[0025] The third heating sub-tube has one end slidably connected in the sliding groove and can be communicated with the air inlet;

[0026] The blocking plate is rotatably connected to the transition block and is used to open and close the disassembly port;

[0027] The first driving member is installed on the transition block and is used to drive the rotation of the blocking plate.

[0028] By adopting the above technical solution, the first heating sub-tube and the third heating sub-tube are installed on the transition block. After the first heating sub-tube is damaged, the first driving member drives the blocking plate to rotate, the first heating sub-tube will be separated from the transition block, and the third heating sub-tube will be in place to be communicated with the air inlet, thereby realizing the replacement of the first heating sub-tube and reducing the influence on the purification of spherical graphite.

[0029] Optionally, a gas flow sensor is installed on the transition block, and the gas flow sensor is used to detect the flow rate of the steam discharged from the air inlet; both the gas flow sensor and the first driving member are connected to the industrial control computer, and the industrial control computer controls the first driving member to act when the flow value is less than the flow threshold.

[0030] By adopting the above technical solution, by setting the gas flow sensor, when the first heating sub-tube is damaged, the third heating sub-tube can be automatically replaced, thereby improving the automation degree of the entire temperature control system.

[0031] Optionally, arc-shaped gaskets are slidably connected to the ends of the sliding grooves close to the air inlet, either facing each other or away from each other; after the two arc-shaped gaskets are abutted, they are adapted to the first heating sub-tube or the third heating sub-tube;

[0032] A second driving member is installed on the transition block, and another second driving member is installed on the blocking plate; the two second driving members respectively correspond to the two arc-shaped gaskets, and the second driving member is used to drive the sliding of the arc-shaped gasket.

[0033] By adopting the above technical solution, after the first heating sub-tube or the third heating sub-tube is communicated with the air inlet, the second driving member drives the corresponding arc-shaped gasket to slide. After the two arc-shaped gaskets are abutted, the sealing between the first heating sub-tube or the third heating sub-tube and the air inlet is realized, thereby reducing the leakage of steam.

[0034] Optionally, a first pressure sensor is installed on the bottom wall of the sliding groove, and the first pressure sensor and the second driving member are both connected to the industrial control computer.

[0035] By adopting the above technical solution, after the first pressure sensor is pressed, it sends an electrical signal to the industrial control computer, and the industrial control computer receives and responds to the electrical signal, thereby controlling the second driving member to act, and the second driving member drives the arc-shaped gasket to slide.

[0036] Optionally, the temperature control system further includes:

[0037] A collection box for collecting the first heating sub-tube and the third heating sub-tube separated from the transition block;

[0038] A support rod, the collection box is slidably connected to the support rod;

[0039] A lifting assembly is installed on the support rod for driving the sliding of the collection box.

[0040] By adopting the above technical solution, the first heating sub-tube and the third heating sub-tube are collected by the collection box, and then the collection box is driven to slide by the lifting assembly, which can facilitate the staff to process the first heating sub-tube and the third heating sub-tube replaced at a high place.

[0041] Optionally, an auxiliary rod is slidably connected to the support rod, the lifting assembly is used to drive the sliding of the auxiliary rod, the collection box is slidably connected to the auxiliary rod, and the sliding direction of the collection box on the auxiliary rod is perpendicular to the sliding direction of the auxiliary rod; a sliding assembly is installed on the auxiliary rod, and the sliding assembly is used to drive the sliding of the collection box.

[0042] By adopting the above technical solution, a sliding component is provided to drive the collection box to slide, which can adapt to the replacement of the first heating sub-tube or the third heating sub-tube at different positions, and improves the application range of the collection box.

[0043] Optionally, both the sliding component and the lifting component are connected to the industrial control computer;

[0044] A second pressure sensor is installed on the inner bottom wall of the collection box, and the second pressure sensor is connected to the industrial control computer; the first driving member has a delayed action;

[0045] When the flow value is less than the flow threshold, the industrial control computer first controls the sliding component to act, and the sliding component drives the collection box to move to the corresponding transition block, and then controls the first driving member to act; when the industrial control computer determines that the pressure value detected by the second pressure sensor is greater than the pressure threshold, it controls the lifting component to act.

[0046] In summary, the present application has at least the following beneficial effects:

[0047] 1. The purpose of setting the temperature sensor, the industrial control computer and the main solenoid valve is that when heating the purification tank, the industrial control computer can automatically adjust the flux of the main solenoid valve according to the pre-set temperature curve to adjust the heating temperature, thus improving the purification accuracy.

[0048] 2. The purpose of setting the auxiliary heating tube and the auxiliary solenoid valve is that when the temperature sensor detects that the temperature is lower than the required temperature of the purification tank, the industrial control computer can control the corresponding auxiliary solenoid valve to open, so that part of the steam in the heating main pipe directly enters the corresponding purification tank, so that the purification tank can quickly reach the required temperature.

[0049] 3. The purpose of setting the first heating sub-tube, the transition block and the third heating sub-tube is that after the first heating sub-tube is damaged, the first heating sub-tube will be disengaged from the transition block, and the third heating sub-tube will be in place to communicate with the air inlet, so as to realize the replacement of the first heating sub-tube, thereby reducing the impact on the spherical graphite purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of the overall structure of the present application;

[0051] Figure 2 is a structural block diagram of the industrial control computer controlling the actions of the main solenoid valve and the auxiliary solenoid valve;

[0052] Figure 3 is a schematic diagram of the connection relationship between the first heating sub-tube and the third heating sub-tube of the present application and two adjacent transition blocks;

[0053] Figure 4 is Figure 3Schematic enlarged structure diagram of part A;

[0054] Figure 5 Schematic structure diagram of the transition block;

[0055] Figure 6 Block diagram of the structure for the industrial control computer to control the operation of the second driving member;

[0056] Figure 7 Block diagram of the structure for the industrial control computer to control the operation of the first driving member;

[0057] Figure 8 Block diagram of the structure for the industrial control computer to control the operation of the lifting motor;

[0058] Figure 9 Block diagram of the structure for the industrial control computer to control the operation of the sliding motor.

[0059] Explanation of reference numerals: 100, purification tank; 110, temperature sensor; 120, auxiliary heating pipe; 121, auxiliary solenoid valve; 200, main heating pipe; 210, main solenoid valve; 220, first heating sub-pipe; 230, transition block; 231, air inlet; 232, air outlet; 233, sliding groove; 234, limiting plate; 235, nut; 236, locking bolt; 237, arc-shaped sealing gasket; 238, second driving member; 239, blocking plate; 240, first driving member; 241, first pressure sensor; 242, gas flow sensor; 250, second heating sub-pipe; 300, heating pipe; 400, industrial control computer; 500, third heating sub-pipe; 600, collection box; 610, second pressure sensor; 700, support rod; 710, auxiliary rod; 720, sliding assembly; 721, sliding motor; 722, sliding lead screw; 800, lifting assembly; 810, lifting motor; 820, lifting lead screw. Detailed implementation manners

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying Figure 1 - accompanying Figure 9 , and it is obvious that the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0061] An embodiment of the present application discloses a spherical graphite purification temperature control system. Referring to Figure 1 and Figure 2 , as an implementation manner of the temperature control system, the temperature control system may include:

[0062] Purification tank 100, installed in the purification workshop, is used as a container for the purification reaction of spherical graphite;

[0063] Specifically, multiple purification tanks 100 can be arranged side by side; for example, 3 can be arranged side by side.

[0064] Main heating pipe 200, one end is connected to a boiler outside for providing steam; a main solenoid valve 210 is connected to the main heating pipe 200;

[0065] Heating pipe 300, wound around the outer wall of the purification tank 100, is used to heat the purification tank 100, one end is connected to the other end of the main heating pipe 200, and the other end is connected to an external condenser;

[0066] Specifically, the number of heating pipes 300 is the same as the number of purification tanks 100, and adjacent heating pipes 300 are connected end to end, and the end of the last heating pipe 300 is connected to the condenser. For example, when facing the purification tank 100, from left to right, they are the first, the second, and the third in sequence, then the end of the third heating pipe 300 is connected to the condenser.

[0067] Temperature sensor 110, installed in the purification tank 100, is used to detect the temperature inside the purification tank 100;

[0068] Among them, one temperature sensor 110 is installed in each purification tank 100. In addition, the purification tanks 100 can be numbered, for example, numbered in ascending order from left to right, No. 1, No. 2, No. 3, etc.

[0069] Industrial control computer 400, connected to the temperature sensor 110 and the main solenoid valve 210, is used to control the flow rate of the main solenoid valve 210 in response to the input temperature curve and the temperature value detected by the temperature sensor 110.

[0070] Specifically, the industrial control computer 400 will display the temperature inside each purification tank 100 in real time, and adjust the flux of the main solenoid valve 210 according to the pre-implanted temperature curve.

[0071] In addition, except for the first purification tank 100, an auxiliary heating pipe 120 is installed on each purification tank 100. One end of the auxiliary heating pipe 120 is connected to the main heating pipe 200, and the other end is connected to the heating pipe 300. An auxiliary solenoid valve 121 is connected to the auxiliary heating pipe 120, and the auxiliary solenoid valve 121 is connected to the industrial control computer 400.

[0072] For example, if the purification tank 100 numbered 3 detects that the temperature is lower than the temperature required in the current stage of the temperature curve, the industrial control computer 400 controls the auxiliary solenoid valve 121 on the number 3 to open, so that part of the steam in the main heating pipe 200 directly enters the auxiliary heating pipe 120 to heat the purification tank 100, so that the temperature of the purification tank 100 quickly reaches the required temperature.

[0073] Referring to Figure 1 and Figure 3 , the main heating pipe 200 may include:

[0074] A plurality of first heating sub-pipes 220;

[0075] A second heating sub-pipe 250, one end of which is connected to the head end of the heating pipe 300 on the first purification tank 100, and the main solenoid valve 210 is arranged on the second heating sub-pipe 250;

[0076] A plurality of transition blocks 230, each of which is provided with an air inlet 231 and an air outlet 232 (see Figure 5 ), a cavity is formed in the transition block 230 to communicate the air inlet 231 with the air outlet 232. Among them, the air inlet 231 is communicated with the first heating sub-pipe 220, the air outlet 232 on one transition block 230 is communicated with the other end of the second heating sub-pipe 250, and the air outlets 232 on the remaining transition blocks 230 are communicated with the auxiliary heating pipe 120; sliding grooves 233 are formed on both side walls of the transition block 230, one end of the sliding groove 233 is communicated with the outside, and one end of the first heating sub-pipe 220 is slidably connected in the sliding groove 233.

[0077] Referring to Figure 3 and Figure 4 , the main heating pipe 200 may further include:

[0078] A limiting plate 234, which is rotatably connected to the transition block 230 and is used to open and close the sliding groove 233; a nut 235 is fixedly connected to the transition block 230; a jack is formed on the side wall of the limiting plate 234;

[0079] A locking bolt 236, which is threadedly connected to the nut 235 and can be inserted into the jack.

[0080] In order to achieve the seal between the first heating sub-pipe 220 and the air inlet 231, arc-shaped gaskets 237 are slidably connected towards or away from each other at one end of the sliding groove 233 close to the air inlet 231; after the two arc-shaped gaskets 237 are abutted, they are adapted to the first heating sub-pipe 220;

[0081] Two second driving members 238 are installed on the transition block 230. The two second driving members 238 respectively correspond to the two arc-shaped gaskets 237 one by one. The second driving member 238 is used to drive the sliding of the corresponding arc-shaped gasket 237. Among them, the second driving member 238 can be an electric push rod or a cylinder, etc.

[0082] In addition, referring to Figure 3 and Figure 5 , the temperature control system may further include:

[0083] A third heating sub-tube 500, one end of which is slidably connected in the sliding groove 233 and can communicate with the air inlet 231. It should be noted that the third heating sub-tube 500 has the same size and shape as the first heating sub-tube 220.

[0084] A baffle plate 239, which is rotatably connected to the transition block 230 and is used to open and close the disassembly port; wherein, the disassembly port is opened at the lowest end of the bottom wall of the inclined sliding groove 233; it should be noted that one of the second driving members 238 is installed on the baffle plate 239, and the arc-shaped gasket 237 corresponding to the second driving member 238 is slidably connected to the baffle plate 239, and the sliding direction is perpendicular to the axis of the third heating sub-tube 500.

[0085] A first driving member 240, which is installed on the transition block 230 and is used to drive the rotation of the baffle plate 239.

[0086] Among them, the first driving member 240 can be a motor, or a combination of a cylinder and a gear, without limitation, as long as it can realize the rotation of the baffle plate 239.

[0087] In addition, the arc-shaped gasket 237 can also achieve the sealing between the third heating sub-tube 500 and the air inlet 231.

[0088] Referring to Figure 6 , in order to achieve automatic sealing, a first pressure sensor 241 is installed on the bottom wall of the sliding groove 233. The first pressure sensor 241 and the second driving member 238 are both connected to the industrial control computer 400. When the first pressure sensor 241 is pressed, it will send an electrical signal to the industrial control computer 400, and the industrial control computer 400 receives and responds to the electrical signal to control the action of the second driving member 238.

[0089] Referring to Figure 7, To achieve the automatic opening and closing of the disassembly port by the baffle 239, a gas flow sensor 242 is installed in the transition block 230. Both the gas flow sensor 242 and the first driving member 240 are connected to the industrial control computer 400. When the industrial control computer 400 determines that the flow value of the steam discharged from the air inlet 231 detected by the gas flow sensor 242 is less than the flow threshold, it controls the first driving member 240 to act. The flow threshold can be the flow value of the steam discharged from the air inlet 231 when the main heating pipe 200 is normal, and can be specifically set according to the actual situation.

[0090] Referring to Figure 1 , As another implementation of the temperature control system, the temperature control system may include:

[0091] A collection box 600 (see Figure 5 ), for collecting the first heating sub-tube 220 and the third heating sub-tube 500 separated from the transition block 230;

[0092] A support rod 700, installed in the purification workshop; wherein, in the use state, the collection box 600 is vertically slidably connected to the support rod 700;

[0093] A lifting assembly 800, installed on the support rod 700, for driving the sliding of the collection box 600.

[0094] As an implementation of the lifting assembly 800, the lifting assembly 800 may include:

[0095] A lifting motor 810;

[0096] A lifting lead screw 820, rotatably connected to the support rod 700 through a bearing seat. The output shaft of the lifting motor 810 is coaxially and fixedly connected to one end of the lifting lead screw 820. The lifting lead screw 820 is threadedly connected to an auxiliary rod 710. The auxiliary rod 710 is slidably connected to the support rod 700, and the collection box 600 is arranged on the auxiliary rod 710.

[0097] In other implementations, the lifting assembly 800 may also be a cylinder or a combination of a motor, a gear, and a rack, etc., as long as it can achieve the vertical sliding of the collection box 600.

[0098] Referring to Figure 8 , To achieve the automatic sliding of the collection box 600 in the vertical direction, a second pressure sensor 610 is installed on the inner bottom wall of the collection box 600. Both the second pressure sensor 610 and the lifting motor 810 are connected to the industrial control computer 400. When the industrial control computer 400 determines that the pressure value detected by the second pressure sensor 610 is greater than the pressure threshold, it controls the lifting motor 810 to act to achieve the lowering of the collection box 600.

[0099] In addition, to enable the collection box 600 to adapt to the replacement of the first heating sub-tube 220 or the third heating sub-tube 500 at different positions; refer to Figure 1 The collection box 600 is horizontally slidably connected to the auxiliary rod 710, and a sliding assembly 720 for driving the collection box 600 to slide is installed on the auxiliary rod 710.

[0100] As an embodiment of the sliding assembly 720, the sliding assembly 720 may include:

[0101] A sliding motor 721, which is installed at one end of the auxiliary rod 710 away from the support rod 700 by bolts;

[0102] A sliding lead screw 722, which is rotatably connected to the auxiliary rod 710 through a bearing seat, and one end is coaxially and fixedly connected to the output shaft of the sliding motor 721; the collection box 600 is threadedly connected to the sliding lead screw 722.

[0103] In other embodiments, the sliding assembly 720 may also be a cylinder or a combination of a motor, a gear, and a rack, as long as the horizontal sliding of the collection box 600 can be achieved.

[0104] Refer to Figure 9 To enable the collection box 600 to automatically slide in the horizontal direction, the sliding motor 721 is connected to the industrial control computer 400, and each transition block 230 is numbered. For example, the numbers are arranged in ascending order from left to right, for example, No. 1, No. 2, No. 3, etc.

[0105] When the industrial control computer 400 determines that the flow value at the transition block 230 numbered 3 is less than the flow threshold, it first controls the sliding motor 721 to act, so that the collection box 600 slides to the 3rd position, and then delays to control the first driving member 240 to act.

[0106] The implementation principle of this embodiment is as follows:

[0107] When heating the purification tank 100, the industrial control computer 400 heats according to the temperature curve. For example, the temperature curve is divided into two heating stages, and the temperature in the second stage is lower than that in the first stage; when the temperature sensor 110 detects that the temperature reaches the end value of the first stage, the industrial control computer 400 controls the main solenoid valve 210 to reduce the flux or turn it off, so as to heat the purification tank 100 according to the second stage; when the temperature sensor 110 detects that the temperature is lower than the required temperature of the purification tank 100, the industrial control computer 400 can control the corresponding auxiliary solenoid valve 121 to open, so that part of the steam in the heating main pipe 200 directly enters the corresponding purification tank 100, so that the purification tank 100 can quickly reach the required temperature.

[0108] The above are all preferred embodiments of the present application, which do not successively limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. A spherical graphite purification temperature control system, characterized in that Including: A purification tank (100), installed in a purification workshop, used as a container for the purification reaction of spherical graphite; A main heating pipe (200), one end of which is connected to a boiler for supplying steam outside; a main solenoid valve (210) is connected to the main heating pipe (200); A heating pipe (300), wound around the outer wall of the purification tank (100), used to heat the purification tank (100), one end of which is connected to the other end of the main heating pipe (200), and the other end is connected to an external condenser; A temperature sensor (110), installed in the purification tank (100), used to detect the temperature inside the purification tank (100); An industrial control computer (400), connected to the temperature sensor (110) and the main solenoid valve (210), used to control the flux of the main solenoid valve (210) in response to an input temperature curve and based on the temperature value detected by the temperature sensor (110); A plurality of the purification tanks (100) are arranged side by side, and the number of the heating pipes (300) and the temperature sensors (110) is the same as the number of the purification tanks (100); adjacent heating pipes (300) are connected end to end, and the last heating pipe (300) is connected to a condenser; The temperature control system further includes: An auxiliary heating pipe (120), one end of which is connected to the main heating pipe (200), and the other end is connected to the heating pipe (300); the auxiliary heating pipe (120) is arranged on the second to the last purification tank (100); an auxiliary solenoid valve (121) is connected to the auxiliary heating pipe (120), and the auxiliary solenoid valve (121) is connected to the industrial control computer (400); The main heating pipe (200) includes: A plurality of first heating sub-pipes (220); A second heating sub-pipe (250), one end of which is connected to the heating pipe (300) on the first purification tank (100), and the main solenoid valve (210) is arranged on the second heating sub-pipe (250); A plurality of transition blocks (230), each of which is provided with an air inlet (231) and an air outlet (232), and the air inlet (231) is connected to the air outlet (232); wherein, the air inlet (231) is connected to the first heating sub-pipe (220), one air outlet (232) is connected to the other end of the second heating sub-pipe (250), and the remaining air outlets (232) are connected to the auxiliary heating pipe (120); sliding grooves (233) are formed on both side walls of the transition block (230), one end of the sliding groove (233) is connected to the outside, and one end of the first heating sub-pipe (220) is slidably connected in the sliding groove (233); A limiting plate (234), rotatably connected to the transition block (230), used to open and close the sliding groove (233); a nut (235) is fixedly connected to the transition block (230); a jack is formed on the side wall of the limiting plate (234); A locking bolt (236), threadedly connected to the nut (235) and capable of being inserted into the jack; The bottom wall of the sliding groove (233) is inclined, and the transition block (230) is provided with a disassembly opening communicating with the sliding groove (233), and the disassembly opening is arranged at the lowest end of the inclined bottom wall of the sliding groove (233); The temperature control system further includes: A third heating sub-tube (500), one end of which is slidably connected in the sliding groove (233) and can communicate with the air inlet (231); A blocking plate (239), rotatably connected to the transition block (230) for opening and closing the disassembly opening; A first driving member (240), mounted on the transition block (230) for driving the rotation of the blocking plate (239).

2. The purification temperature control system for spherical graphite according to claim 1, wherein A gas flow sensor (242) is mounted on the transition block (230), and the gas flow sensor (242) is used to detect the flow rate of the steam discharged from the air inlet (231); both the gas flow sensor (242) and the first driving member (240) are connected to the industrial control computer (400), and when the flow value is less than the flow threshold, the industrial control computer (400) controls the first driving member (240) to act.

3. A spherical graphite purification temperature control system according to claim 1, characterized in that, One end of the sliding groove (233) close to the air inlet (231) is slidably connected with an arc-shaped sealing gasket (237) in an approaching or separating manner; after the two arc-shaped sealing gaskets (237) are abutted, they are adapted to the first heating sub-tube (220) or the third heating sub-tube (500); A second driving member (238) is mounted on the transition block (230), and another second driving member (238) is mounted on the blocking plate (239); the two second driving members (238) respectively correspond to the two arc-shaped sealing gaskets (237), and the second driving member (238) is used to drive the sliding of the arc-shaped sealing gasket (237).

4. The temperature control system for purifying spherical graphite according to claim 3, characterized in that, A first pressure sensor (241) is mounted on the bottom wall of the sliding groove (233), and both the first pressure sensor (241) and the second driving member (238) are connected to the industrial control computer (400).

5. A spherical graphite purification temperature control system according to claim 4, characterized in that The temperature control system further includes: A collection box (600) for collecting the first heating sub-tube (220) and the third heating sub-tube (500) separated from the transition block (230); A support rod (700), and the collection box (600) is slidably connected to the support rod (700); A lifting assembly (800), mounted on the support rod (700) for driving the sliding of the collection box (600).

6. The temperature control system for purifying spherical graphite according to claim 5, wherein, An auxiliary rod (710) is slidably connected to the support rod (700), the lifting assembly (800) is used to drive the sliding of the auxiliary rod (710), the collection box (600) is slidably connected to the auxiliary rod (710), and the sliding direction of the collection box (600) on the auxiliary rod (710) is perpendicular to the sliding direction of the auxiliary rod (710); a sliding assembly (720) is mounted on the auxiliary rod (710), and the sliding assembly (720) is used to drive the sliding of the collection box (600).

7. A spherical graphite purification temperature control system according to claim 6, characterized in that The sliding assembly (720) and the lifting assembly (800) are both connected to the industrial control computer (400); A second pressure sensor (610) is installed on the bottom wall of the collection box (600), and the second pressure sensor (610) is connected to the industrial control computer (400); the first driving member (240) performs a delayed action; When the flow value is less than the flow threshold, the industrial control computer (400) first controls the sliding assembly (720) to act, and the sliding assembly (720) drives the collection box (600) to move to the corresponding transition block (230), and then controls the first driving member (240) to act; when the industrial control computer (400) determines that the pressure value detected by the second pressure sensor (610) is greater than the pressure threshold, it controls the lifting assembly (800) to act.

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