Silica sol concentrated solvent replacement system

Abstract

The invention discloses a silica sol concentration solvent replacement system, and relates to the technical field of concentration devices. The reaction kettle comprises a kettle body, a stirring rod is rotatably mounted at the upper end of the kettle body in a penetrating manner, and a driving motor connected with the stirring rod is fixedly mounted on the kettle body; the heating module comprises a spiral pipe installed in the inner wall of the kettle body, and the side face of the kettle body is connected with a flow inlet pipe and a flow outlet pipe which are communicated with the two ends of the spiral pipe; the waste heat circulation module comprises a heat exchange tank mounted on one side of the kettle body, the upper end of the heat exchange tank is communicated with a top pipe and an air inlet pipe, and the lower end of the heat exchange tank is communicated with a bottom pipe and a liquid outlet pipe. The waste heat circulation module is communicated with the heating module, high-temperature gas exhausted by the kettle body is collected through a heat exchange tank in the waste heat circulation module, then heat is transferred into the heating module again, supplementary heating is carried out on the heating module through an auxiliary heating disc, only one-time initial heating is needed by a boiler, and subsequent heating is not needed by the boiler; and energy is greatly saved.

Description

Technical Field

[0001] The present application relates to the technical field of concentration devices, and in particular to a silica sol concentration solvent replacement system. Background Art

[0002] Silica sol is a colloidal solution formed by nano-scale silicon dioxide particles dispersed in water. It has good aggregation stability and is mostly used in precision casting and other processing.

[0003] In the traditional silica sol production process, the solvent needs to be concentrated and replaced after processing is completed to reduce the solvent volume and increase the viscosity for convenience of subsequent processing. However, the traditional replacement process is cumbersome and energy-wasting. The replaced water vapor will carry a large amount of heat when discharged, and the replacement kettle needs to use a boiler to provide heat for the replacement kettle at all times. This process consumes a lot of energy.

[0004] Therefore, the present invention proposes a silica sol concentrated solvent replacement system. Summary of the invention

[0005] The purpose of the present application is to solve the problems in the above-mentioned background technology, and to provide a silica sol concentrated solvent replacement system.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A silica sol concentrated solvent replacement system, comprising:

[0008] A kettle body, wherein a stirring rod is rotatably installed on the upper end of the kettle body, and a driving motor connected to the stirring rod is fixedly installed on the kettle body;

[0009] The heating module comprises a spiral tube installed in the inner wall of the kettle body, and the side of the kettle body is connected with an inlet pipe and an outlet pipe connected with two ends of the spiral tube;

[0010] The waste heat circulation module comprises a heat exchange tank installed on one side of the kettle body, the upper end of the heat exchange tank is connected with a top pipe and an air inlet pipe, the lower end of the heat exchange tank is connected with a bottom pipe and a liquid outlet pipe, a vent is installed between the air inlet pipe and the kettle body, the end of the bottom pipe is connected with a transition pipe connected with the inlet pipe, a booster pump is installed on the transition pipe, a three-way solenoid valve is installed between the transition pipe and the inlet pipe and between the top pipe and the outlet pipe, a heat exchange pipeline located in the heat exchange tank is connected between the top pipe and the bottom pipe, and an auxiliary heating plate is installed in the heat exchange pipeline;

[0011] The opening and closing control part is installed inside the kettle body and is used to seal or open the ventilation part.

[0012] Furthermore, the kettle body includes an inner tank and a kettle shell wrapping the lower half of the inner tank, a heating chamber is constructed between the kettle shell and the inner tank, the spiral tube is installed in the heating chamber and its cross-section is semicircular and fits on the inner tank, a feed pipe and a pressure reducing pipe are connected to the top of the inner tank, and a discharge pipe that passes through the kettle shell is constructed at the bottom of the inner tank.

[0013] Furthermore, the stirring rod includes a main shaft rotatably installed through the upper end of the inner tank, and two stirring blades located in the inner tank are sleeved on the main shaft. An auxiliary shaft located on one side of the main shaft is rotatably installed through the kettle body, and the auxiliary shaft is constructed with a toggle rod arranged between the upper and lower parts of the two stirring blades. The top of the auxiliary shaft is connected to the main shaft through a pulley transmission.

[0014] Furthermore, a mounting plate is fixedly sleeved on the kettle shell, one end of the mounting plate is constructed with an arc groove, one end of the arc groove is hinged with a semi-ring buckle plate for wrapping the heat exchange tank, and a vertical bracket is connected to the mounting plate, and a plurality of annular buckles for sleeved the heat exchange tank are installed in an array along its height direction on the vertical bracket.

[0015] Furthermore, the heat exchange pipeline includes a heat-conducting coil connected to the top pipe and a heat-insulating coil connected to the bottom pipe, a plurality of heat-conducting vertical pipes are connected between the heat-conducting coil and the heat-insulating coil, a heat-insulating plate located on the upper side of the heat-insulating coil is slidably sleeved on the plurality of heat-conducting vertical pipes, and the auxiliary heating plate is installed in the heat-insulating coil.

[0016] Furthermore, the heat insulation plate includes a cylindrical block sleeved on the heat conduction vertical pipe, a flow gap is constructed between the circumference of the cylindrical block and the inner wall of the heat exchange tank, and a conical ring piece is constructed on the upper edge of the cylindrical block for sealing the flow gap, and the conical ring piece is made of rubber.

[0017] Furthermore, the ventilation member comprises an exhaust pipe constructed on the top of the kettle body, the exhaust pipe is connected to a ventilation cover, the upper end of the ventilation cover is connected to a connecting pipe through a flange, and the other end of the connecting pipe is connected to the air inlet pipe.

[0018] Furthermore, the opening and closing control component includes a column frame fixedly connected to the top of the kettle body and connected to the exhaust pipe, the side of the column frame is configured with a plurality of air vents arranged close to the exhaust pipe along a circumferential array, a piston block which is inserted into the exhaust pipe is slidably installed in the column frame, and an intermittent pushing member for controlling the movement of the piston block is installed in the kettle body.

[0019] Furthermore, the intermittent pushing member includes a return spring, which is connected between the bottom of the piston block and the top of the column frame and is sleeved on the outside of the column frame. The side of the piston block is constructed with an angled groove with an inclined surface arranged upward. A connecting block is installed on the top of the kettle body. A reciprocating moving member that passes through the vent and is used to resist the inclined surface of the angled groove is slidably installed in the connecting block.

[0020] Furthermore, the reciprocating moving part includes a horizontal plate that slides through a connecting block, a protrusion is constructed on the horizontal plate, a guide rod that slides through the connecting block is constructed on the protrusion, a supporting spring sleeved on the guide rod is installed between the protrusion and the connecting block, an angled block that abuts against the inclined surface of the angled groove is constructed at one end of the horizontal plate, a triangular plate is constructed at the other end of the horizontal plate, a ring sleeve is fixedly sleeved on the auxiliary shaft, and a push plate for abutting against the inclined surface of the triangular plate is constructed on the ring sleeve.

[0021] The beneficial effects of this application are as follows:

[0022] By connecting the waste heat circulation module to the heating module, the present application can use the heat exchange tank therein to collect the high-temperature gas discharged from the kettle body, and then transfer the heat back to the heating module, and then use the auxiliary heating plate to supplement it. Only the boiler needs to be heated once for the initial heating, and there is no need for subsequent heating by the boiler, which greatly saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural diagram of this application;

[0024] Figure 2 It is a half-section diagram of the three-dimensional structure of the present application;

[0025] Figure 3 It is a partial three-dimensional structural diagram of this application;

[0026] Figure 4 This is a three-dimensional structural diagram of the stirring rod of the present application;

[0027] Figure 5 It is another partial three-dimensional structure diagram of the present application;

[0028] Figure 6 This is a half-section diagram of the three-dimensional structure of the heat exchange tank of the present application;

[0029] Figure 7 This is a three-dimensional structural diagram of the opening and closing control component of this application;

[0030] Figure 8 This application Figure 7 Partial cross-sectional view of the three-dimensional structure.

[0031] Figure numerals: 1, kettle body; 101, kettle shell; 1011, mounting plate; 1012, arc groove; 1013, semi-ring buckle plate; 1014, vertical bracket; 1015, ring buckle; 102, liner; 103, heating chamber; 104, feed pipe; 105, pressure reducing pipe; 106, discharge pipe; 2, stirring rod; 201, main shaft; 202, stirring blade; 203, auxiliary shaft; 204, toggle rod; 3, drive motor; 4, heating module; 401, spiral tube; 402, inlet pipe; 403, outlet pipe; 5, waste heat circulation module; 501, heat exchange tank; 502, top pipe; 503, air inlet pipe; 504, bottom pipe; 505, liquid outlet pipe; 506, transition pipe; 507, booster pump; 508, three-way solenoid valve; 50 9. Heat exchange pipeline; 5091. Heat transfer coil; 5092. Heat insulation coil; 5093. Heat transfer riser; 6. Ventilation piece; 601. Exhaust pipe; 602. Ventilation cover; 603. Connecting pipe; 7. Auxiliary heating plate; 8. Opening and closing control piece; 801. Column frame; 802. Ventilation port; 803. Piston block; 804. Intermittent push piece; 8041. Return spring; 8042. Bevel groove; 8043. Connecting block; 9. Heat insulation board; 901. Cylindrical block; 902. Flow gap; 903. Conical ring piece; 10. Reciprocating moving piece; 1001. Cross plate; 1002. Bump; 1003. Guide rod; 1004. Support spring; 1005. Bevel block; 1006. Triangular plate; 1007. Ring sleeve; 1008. Push plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0033] like Figure 1-Figure 6 As shown, a silica sol concentrated solvent replacement system proposed in one embodiment of the present application includes:

[0034] A kettle body 1, a stirring rod 2 is rotatably installed on the upper end of the kettle body 1, and a driving motor 3 connected to the stirring rod 2 is fixedly installed on the kettle body 1. The driving motor 3 can drive the stirring rod 2 to stir in the kettle body 1, so that the silica sol therein continuously contacts the inner wall of the kettle body 1, thereby ensuring the heat conduction efficiency in the liquid and improving the heating effect;

[0035] The heating module 4 includes a spiral tube 401 installed in the inner wall of the kettle body 1. The side of the kettle body 1 is connected with an inlet pipe 402 and an outlet pipe 403 connected to both ends of the spiral tube 401. It should be noted that the inlet pipe 402 and the outlet pipe 403 are connected to an external boiler, and the boiler is used to generate high-temperature gas or liquid to heat the spiral tube 401. Compared with direct contact with the solvent for heating, indirect heating is more gentle, avoids damage to the solvent structure, and increases safety;

[0036] The waste heat circulation module 5 includes a heat exchange tank 501 installed on one side of the kettle body 1. The upper end of the heat exchange tank 501 is connected to a top pipe 502 and an air inlet pipe 503, and the lower end of the heat exchange tank 501 is connected to a bottom pipe 504 and a liquid outlet pipe 505. A vent 6 is installed between the air inlet pipe 503 and the kettle body 1. The end of the bottom pipe 504 is connected to a transition pipe 506 connected to the inlet pipe 402. A booster pump 507 is installed on the transition pipe 506. A three-way solenoid valve 508 is installed between the transition pipe 506 and the inlet pipe 402 and between the top pipe 502 and the outlet pipe 403. A heat exchange pipeline 509 located in the heat exchange tank 501 is connected between the top pipe 502 and the bottom pipe 504, and an auxiliary heating plate 7 is installed in the heat exchange pipeline 509. It should be noted that the auxiliary heating plate 7 adopts an electric heating structure, such as a resistance heating structure, and the three-way solenoid valve 508 can control the connection and disconnection of the inlet pipe 402 and the outlet pipe 403 with the boiler to change the flow direction of the internal liquid or gas. The booster pump 507 can be used to provide power for the gas or liquid therein, so that it can circulate between the spiral tube 401 and the heat exchange pipeline 509;

[0037] An opening and closing control member 8 is installed inside the kettle body 1 and is used to seal or open the vent member 6;

[0038] When the device is in use, the boiler is first used to provide high-temperature liquid or gas to the spiral tube 401 in the heating module 4, so that the evaporation temperature of the solvent in the kettle body 1 is reached, and then the connection between the boiler and the inlet pipe 402 and the outlet pipe 403 is closed through the three-way solenoid valve 508. At this time, the inlet pipe 402 is connected to the transition pipe 506, and the outlet pipe 403 is connected to the spiral tube 401, so that a closed-loop circulation is formed between the spiral tube 401 and the heat exchange pipeline 509, and the circulation is promoted by the booster pump 507, and then the opening and closing control component 8 is used to control the opening of the vent 6 to receive the steam generated by the solvent in the kettle body 1 into the heat exchange tank 501 Because the medium in the spiral tube 401 always transfers heat to the kettle body 1, the temperature of the medium when entering the heat exchange pipeline 509 is lower than the steam in the kettle body 1. The steam enters the heat exchange tank 501 and contacts the outer surface of the heat exchange pipeline 509, which will produce condensation, thereby transferring the heat back to the medium in the heat exchange pipeline 509, and then enters the spiral tube 401 through circulation to reheat the kettle body 1. In this process, there will be some energy loss. The auxiliary heating plate 7 can be used to supplement the heating of the medium. Compared with the traditional method of completely utilizing the boiler circulation to heat the medium, the energy effect is greatly reduced and the energy saving effect is improved.

[0039] like Figure 1-Figure 3As shown, in some embodiments, the kettle body 1 includes an inner liner 102 and a kettle shell 101 that wraps the lower half of the inner liner 102, a heating chamber 103 is constructed between the kettle shell 101 and the inner liner 102, a spiral tube 401 is installed in the heating chamber 103 and its cross-section is semicircular and fits on the inner liner 102, a feed pipe 104 and a pressure reducing pipe 105 are connected to the top of the inner liner 102, and a discharge pipe 106 that passes through the kettle shell 101 is constructed at the bottom of the inner liner 102. It should be noted that by installing the pressure reducing pipe 105 on the inner liner 102, it can be connected to an external vacuum pump component to reduce the pressure in the inner liner 102, thereby increasing the boiling point of the solvent and reducing the temperature required for evaporation. Water can be directly used as a heating medium in the spiral tube 401, thereby ensuring the smooth operation of the waste heat circulation module 5 and further reducing energy consumption.

[0040] like Figure 4 As shown, in some embodiments, the stirring rod 2 includes a main shaft 201 rotatably installed through the upper end of the inner tank 102, and two stirring blades 202 located in the inner tank 102 are sleeved on the main shaft 201. An auxiliary shaft 203 located on one side of the main shaft 201 is rotatably installed through the kettle body 1, and a toggle rod 204 arranged between the upper and lower parts of the two stirring blades 202 is constructed on the auxiliary shaft 203. The top of the auxiliary shaft 203 is connected to the main shaft 201 through a pulley transmission. By setting two rotating parts, the main shaft 201 and the auxiliary shaft 203, the cross-stirring of the stirring blades 202 and the toggle rod 204 can be utilized to improve the heat conduction efficiency of the solvent, thereby improving the evaporation efficiency and ensuring the energy utilization rate.

[0041] like Figure 5 As shown, in some embodiments, a mounting plate 1011 is fixedly sleeved on the kettle shell 101, and an arc groove 1012 is constructed at one end of the mounting plate 1011. A semi-ring buckle plate 1013 for wrapping the heat exchange tank 501 is hinged at one end of the arc groove 1012. A vertical bracket 1014 is connected to the mounting plate 1011, and a plurality of annular buckles 1015 for sleeved the heat exchange tank 501 are installed in an array along the height direction of the vertical bracket 1014. It should be noted that the annular buckle 1015 is an existing The pipe clamp adopts two half-ring pieces connected by bolts to wrap and fix the heat exchange tank 501, and the end of the half-ring buckle plate 1013 is penetrated by a fixing bolt threadedly connected to the mounting plate 1011. The half-ring buckle plate 1013 and the arc groove 1012 are mutually engaged to tightly clamp the heat exchange tank 501, and combined with the wrapping of the annular buckle 1015, the installation stability is improved, and it is also convenient to disassemble and repair the heat exchange tank 501, thereby increasing the flexibility of the device.

[0042] like Figure 5-Figure 6As shown, in some embodiments, the heat exchange pipeline 509 includes a heat-conducting coil 5091 connected to the top tube 502 and a heat-insulating coil 5092 connected to the bottom tube 504, and a plurality of heat-conducting vertical pipes 5093 are connected between the heat-conducting coil 5091 and the heat-insulating coil 5092. A heat-insulating plate 9 located on the upper side of the heat-insulating coil 5092 is slidably sleeved on the plurality of heat-conducting vertical pipes 5093, and the auxiliary heating plate 7 is installed in the heat-insulating coil 5092. It should be noted that the heat-conducting coil 5091 is connected to the heat-conducting vertical pipe 5093 by a spiral structure. With the arrangement of the plurality of heat-conducting vertical pipes 5093, the contact area with the gas can be increased, and the heat conduction efficiency can be improved. The material is a copper tube, and the heat-insulating coil 5092 can be wrapped with a layer of heat-insulating rubber on its outside. To reduce heat conduction, when the device is running, the evaporated gas in the kettle 1 will first enter the upper part of the heat exchange tank 501 through the air inlet pipe 503, and use the buoyancy of the steam to remain at a high level for a certain period of time and contact the heat conduction coil 5091 and the heat conduction vertical pipe 5093. At this time, the steam will exchange heat with the heat conduction vertical pipe 5093 with a lower temperature, resulting in condensation. The water in the heat conduction vertical pipe 5093 will heat up, and the steam will condense into water droplets and gradually slide down to the insulation coil 5092 and drip on the bottom of the heat exchange tank 501. The condensed water will not absorb the internal heat of the insulation coil 5092 when it contacts the insulation coil 5092, thereby reducing heat loss, and allowing the liquid to accumulate at the bottom of the heat exchange tank 501. When the liquid accumulates to a certain extent, it will be discharged using the liquid outlet pipe 505, thereby increasing convenience.

[0043] like Figure 6 As shown, in some embodiments, the heat insulation board 9 includes a cylindrical block 901 sleeved on the heat conduction vertical pipe 5093, a flow gap 902 is constructed between the circumference of the cylindrical block 901 and the inner wall of the heat exchange tank 501, and a conical ring piece 903 for blocking the flow gap 902 is constructed on the upper edge of the cylindrical block 901. The conical ring piece 903 is made of rubber material. A heat insulation board 9 is arranged in the heat exchange tank 501, and a lower cavity can be formed at the bottom of the heat exchange tank 501 where the heat insulation coil 5092 is located, so as to reduce the heat loss from the upper side of the heat insulation board 9 to the lower cavity, thereby ensuring the heat exchange effect and at the same time When the auxiliary heating plate 7 performs supplementary heating on the inside of the insulation coil 5092, part of the heat will be conducted to the upper space, and then this part of the heat will be reused through the flow. The setting of the insulation coil 5092 and the insulation plate 9 can reduce the heat transfer to the lower space, thereby reducing heat loss and ensuring energy utilization. It should be noted that the conical ring piece 903 on the edge of the cylindrical block 901 is normally in contact with the inner wall of the heat exchange tank 501, which is used to seal the lower space. When the steam condenses into liquid, it will automatically squeeze the conical ring piece 903 through gravity and flow into the lower space for accumulation.

[0044] like Figure 1 , Figure 7 and Figure 8As shown, in some embodiments, the vent 6 includes an exhaust pipe 601 constructed on the top of the kettle body 1, and a vent hood 602 is connected to the exhaust pipe 601. The upper end of the vent hood 602 is connected to a connecting pipe 603 through a flange, and the other end of the connecting pipe 603 is connected to the air inlet pipe 503. The vent hood 602 can increase the opening size of the steam flow direction, so that more steam can be sealed in the vent hood 602 by using the opening and closing control component 8, and then the steam is made to flow toward the heat exchange tank 501 through the connecting pipe 603, and this process is repeated, thereby saving the power required for exhaust and saving energy.

[0045] like Figure 7-Figure 8 As shown, in some embodiments, the opening and closing control member 8 includes a column frame 801 fixedly connected to the top of the kettle body 1 and connected to the exhaust pipe 601. The side of the column frame 801 is arranged with a plurality of vents 802 arranged close to the exhaust pipe 601 along a circumferential array. A piston block 803 inserted into the exhaust pipe 601 is slidably installed in the column frame 801. An intermittent pusher 804 for controlling the movement of the piston block 803 is installed in the kettle body 1. It should be noted that in the initial state, the piston block 803 is in the open state. At this time, the pressure in the heat exchange tank 501 is the same as that in the kettle body 1, both of which are in a negative pressure state. The continuous evaporation of the solvent in the kettle body 1 will cause part of the steam to The steam is filled into the heat exchange tank 501. At this time, the piston block 803 seals the exhaust pipe 601 through the intermittent pusher 804. After the steam condenses in the heat exchange tank 501, the air pressure in the heat exchange tank 501 will decrease, while the pressure in the kettle body 1 continues to increase due to the evaporation of the gas. When the exhaust pipe 601 is opened again by the intermittent pusher 804, the steam can be extracted by utilizing the state in which the pressure in the heat exchange tank 501 is less than the pressure in the kettle body 1. The autonomous flow of steam can be achieved by repeating the cycle, which greatly saves the power for extracting steam and can also ensure the condensation efficiency of the steam, thereby avoiding the heat exchange tank 501 and the kettle body 1 being at the same temperature, resulting in the inability to condense.

[0046] like Figure 7-Figure 8As shown, in some embodiments, the intermittent pusher 804 includes a return spring 8041, which is connected between the bottom of the piston block 803 and the top of the column frame 801 and is sleeved on the outside of the column frame 801. The side of the piston block 803 is configured with an angled groove 8042 with an inclined surface upward. A connecting block 8043 is installed on the top of the kettle body 1. A reciprocating moving member 10 that penetrates the vent 802 and is used to resist the inclined surface of the angled groove 8042 is slidably installed in the connecting block 8043. It should be noted that in the initial state, the movable The piston block 803 is inserted upward into the exhaust pipe 601. At this time, the return spring 8041 is in a stretched state to always provide an upward thrust for the piston block 803. The reciprocating moving part 10 can push the inclined surface of the angled groove 8042 to move the piston block 803 downward and gradually disengage from the exhaust pipe 601 while opening the blockage of the vent 802, thereby realizing the operation of opening the exhaust pipe 601. The setting of the return spring 8041 can realize the conversion of the reciprocating drive of the piston block 803 into a unidirectional drive, saving energy consumption.

[0047] like Figure 7-Figure 8 As shown, in some embodiments, the reciprocating member 10 includes a horizontal plate 1001 that slides through the connecting block 8043, a protrusion 1002 is configured on the horizontal plate 1001, a guide rod 1003 that slides through the connecting block 8043 is configured on the protrusion 1002, a support spring 1004 that is sleeved on the guide rod 1003 is installed between the protrusion 1002 and the connecting block 8043, a bevel block 1005 that contacts the bevel surface of the bevel groove 8042 is configured at one end of the horizontal plate 1001, a triangular plate 1006 is configured at the other end of the horizontal plate 1001, a ring sleeve 1007 is fixedly sleeved on the auxiliary shaft 203, and a ring sleeve 1007 is configured for The push plate 1008 that abuts the inclined surface of the triangular plate 1006 can continuously drive the push plate 1008 on the ring sleeve 1007 to rotate by utilizing the rotation of the auxiliary shaft 203, thereby intermittently abutting the inclined surface of the triangular plate 1006, and at the same time pushing the cross plate 1001 to move toward the bevel groove 8042. When the bevel block 1005 gradually abuts and inserts into the bevel groove 8042, the piston block 803 can be separated from the exhaust pipe 601. This structure directly utilizes the auxiliary shaft 203 as a driving force, thereby increasing the linkage of the structure. There is no need to additionally set up an electric push rod, thus saving equipment costs. In addition, no electronic equipment is set up in the kettle body 1, which is safer and more stable.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A silica sol concentrated solvent replacement system, characterized in that: include: A kettle body (1), a stirring rod (2) being rotatably installed on the upper end of the kettle body (1), and a driving motor (3) connected to the stirring rod (2) being fixedly installed on the kettle body (1); The heating module (4) comprises a spiral tube (401) installed in the inner wall of the kettle body (1), and the side of the kettle body (1) is connected with an inlet pipe (402) and an outlet pipe (403) which are connected to both ends of the spiral tube (401); The waste heat circulation module (5) comprises a heat exchange tank (501) installed on one side of the kettle body (1), the upper end of the heat exchange tank (501) is connected to a top pipe (502) and an air inlet pipe (503), the lower end of the heat exchange tank (501) is connected to a bottom pipe (504) and a liquid outlet pipe (505), a vent (6) is installed between the air inlet pipe (503) and the kettle body (1), and the end of the bottom pipe (504) is connected to a transition pipe (402) connected to the inlet pipe (402). A transition pipe (506) is provided, a booster pump (507) is installed on the transition pipe (506), a three-way solenoid valve (508) is installed between the transition pipe (506) and the inlet pipe (402) and between the top pipe (502) and the outlet pipe (403), a heat exchange pipeline (509) located in the heat exchange tank (501) is connected between the top pipe (502) and the bottom pipe (504), and an auxiliary heating plate (7) is installed in the heat exchange pipeline (509); An opening and closing control member (8) is installed inside the kettle body (1) and is used to seal or open the vent member (6).

2. A silica sol concentrated solvent replacement system according to claim 1, characterized in that: The kettle body (1) comprises an inner liner (102) and a kettle shell (101) that wraps around the lower half of the inner liner (102); a heating chamber (103) is constructed between the kettle shell (101) and the inner liner (102); the spiral tube (401) is installed in the heating chamber (103) and has a semicircular cross-section that fits on the inner liner (102); a feed pipe (104) and a pressure reducing pipe (105) are connected to the top of the inner liner (102); and a discharge pipe (106) that penetrates the kettle shell (101) is constructed at the bottom of the inner liner (102).

3. A silica sol concentrated solvent replacement system according to claim 2, characterized in that: The stirring rod (2) comprises a main shaft (201) rotatably installed through the upper end of the inner pot (102); two stirring blades (202) located in the inner pot (102) are sleeved on the main shaft (201); an auxiliary shaft (203) located on one side of the main shaft (201) is rotatably installed through the kettle body (1); a toggle rod (204) arranged between the upper and lower parts of the two stirring blades (202) is constructed on the auxiliary shaft (203); and the top of the auxiliary shaft (203) is connected to the main shaft (201) through a pulley transmission.

4. A silica sol concentrated solvent replacement system according to claim 2, characterized in that: A mounting plate (1011) is fixedly sleeved on the kettle shell (101), one end of the mounting plate (1011) is configured with an arc-shaped groove (1012), one end of the arc-shaped groove (1012) is hingedly connected with a semi-ring buckle plate (1013) for wrapping the heat exchange tank (501), the mounting plate (1011) is connected to a vertical bracket (1014), and a plurality of ring buckles (1015) for sleeved the heat exchange tank (501) are installed in an array along the height direction of the vertical bracket (1014).

5. The silica sol concentrated solvent replacement system according to claim 1, characterized in that: The heat exchange pipeline (509) comprises a heat-conducting coil (5091) connected to the top tube (502) and a heat-insulating coil (5092) connected to the bottom tube (504); a plurality of heat-conducting vertical pipes (5093) are connected between the heat-conducting coil (5091) and the heat-insulating coil (5092); a heat-insulating plate (9) located on the upper side of the heat-insulating coil (5092) is slidably sleeved on the plurality of heat-conducting vertical pipes (5093); and the auxiliary heating plate (7) is installed in the heat-insulating coil (5092).

6. A silica sol concentrated solvent replacement system according to claim 5, characterized in that: The heat insulation plate (9) comprises a cylindrical block (901) sleeved on the heat conduction vertical pipe (5093), a flow gap (902) is constructed between the circumference of the cylindrical block (901) and the inner wall of the heat exchange tank (501), and a conical ring piece (903) for sealing the flow gap (902) is constructed on the upper edge of the cylindrical block (901), and the conical ring piece (903) is made of rubber.

7. The silica sol concentrated solvent replacement system according to claim 3, characterized in that: The ventilation member (6) comprises an exhaust pipe (601) constructed on the top of the kettle body (1), the exhaust pipe (601) is connected to a ventilation cover (602), the upper end of the ventilation cover (602) is connected to a connecting pipe (603) via a flange, and the other end of the connecting pipe (603) is connected to an air inlet pipe (503).

8. The silica sol concentrated solvent replacement system according to claim 7, characterized in that: The opening and closing control member (8) comprises a column frame (801) fixedly connected to the top of the kettle body (1) and connected to the exhaust pipe (601); a plurality of vents (802) arranged close to the exhaust pipe (601) are arranged in a circular array on the side of the column frame (801); a piston block (803) inserted into the exhaust pipe (601) is slidably installed in the column frame (801); and an intermittent pusher (804) for controlling the movement of the piston block (803) is installed in the kettle body (1).

9. The silica sol concentrated solvent replacement system according to claim 8, characterized in that: The intermittent pusher (804) comprises a return spring (8041), the return spring (8041) is connected between the bottom of the piston block (803) and the top of the column frame (801) and is sleeved on the outside of the column frame (801), the side of the piston block (803) is structured with an angled groove (8042) with an inclined surface facing upward, a connecting block (8043) is installed at the top of the kettle body (1), and a reciprocating moving member (10) is slidably installed in the connecting block (8043) and passes through the vent (802) and is used to abut against the inclined surface of the angled groove (8042).

10. A silica sol concentrated solvent replacement system according to claim 9, characterized in that: The reciprocating member (10) comprises a transverse plate (1001) which slides through a connecting block (8043); a protrusion (1002) is formed on the transverse plate (1001); a guide rod (1003) which slides through the connecting block (8043) is formed on the protrusion (1002); a support spring (1004) sleeved on the guide rod (1003) is installed between the protrusion (1002) and the connecting block (8043); a bevel block (1005) which abuts against the inclined surface of the bevel groove (8042) is formed on one end of the transverse plate (1001); a triangle plate (1006) is formed on the other end of the transverse plate (1001); a ring sleeve (1007) is fixedly sleeved on the auxiliary shaft (203); and a push plate (1008) for abutting against the inclined surface of the triangle plate (1006) is formed on the ring sleeve (1007).

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