A reaction kettle for preparing epoxy resin

Abstract

The invention belongs to the technical field of resin production, and specifically is a reaction kettle for preparing epoxy resin, comprising a cylinder, a kettle bottom, a kettle cover, a motor, a fixing seat, a stirring device and a heating device; the invention heats the liquid in the kettle through the heating device, the motor drives the stirring shaft to rotate, and then drives the stirring blades to rotate, and at the same time drives the stirring rod to rotate through the rotation of the fixed connecting seat and the movable connecting seat, and the stirring blades and the stirring rod cooperate with each other, so that the liquid under the stirring blades is continuously pushed upward, so that the liquid level of the stirring shaft attachment rises, and the liquid near the side wall of the kettle body flows to the bottom of the kettle, and then the liquid level of the side wall attachment of the kettle body is lowered, so as to eliminate the swirling phenomenon, so as to circulate the liquid in the kettle body, and so as to enable different liquid layers to flow to each other, so as to eliminate the swirling phenomenon in the kettle body during the stirring process, which causes uneven mixing, poor mixing effect and low production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of resin production, in particular to a reaction kettle for preparing epoxy resin. Background Art

[0002] Epoxy resin is a high molecular polymer, which refers to a class of polymers containing two or more epoxy groups in the molecule. It is the condensation product of epichlorohydrin and bisphenol A or polyols. The excellent physical, mechanical and electrical insulation properties of epoxy resin, its adhesion to various materials, and the flexibility of its use process are not possessed by other thermosetting plastics. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, and is widely used in various fields of the national economy.

[0003] In the process of epoxy resin production and preparation, a reaction device (reactor) is required. Since epoxy resin is a condensation product of epichlorohydrin and bisphenol A or polyol, it needs to be stirred during the reaction to fully mix the reaction. Since the stirring blades are mostly placed in the center of the reaction device, the liquid in the reaction device will produce tangential flow when the stirring blades rotate, and even make all the liquid revolve around the stirring shaft. Under the action of centrifugal force, the liquid rushes to the side wall of the reaction device, causing the liquid level in the peripheral part to rise and the liquid level in the center to naturally drop, thus forming a large vortex (this flow pattern is called "vortex"). During vortexing, especially near the center, there is almost no velocity gradient between different liquid layers, thus forming a so-called "solid rotation part" of poor mixing area, which affects the mixing effect and the production efficiency of epoxy resin. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention proposes a reaction kettle for preparing epoxy resin. The present invention is mainly used to solve the problem that the existing reaction kettle will swirl when the stirring blade rotates, thereby affecting the mixing effect and further affecting the production efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: the present invention provides a reaction kettle for preparing epoxy resin, comprising a cylinder, a kettle bottom, a kettle cover, a motor, a fixed seat, a stirring device and a heating device; the kettle bottom and the kettle cover are respectively arranged at two ends of the cylinder; the kettle bottom and the kettle cover are both fixedly connected to the cylinder; the kettle bottom is provided with a discharge hole and holes for other purposes; the kettle cover is provided with a manhole, a feeding hole and holes for other purposes; the heating device is arranged on the outer wall of the cylinder; the heating device is used to heat the resin in the kettle body formed by the cylinder, the kettle bottom and the kettle cover; the stirring device is arranged in the cylinder; the kettle cover is fixedly connected to the fixed seat; the fixed seat is fixedly connected to the mounting seat of the motor; the rotating shaft of the motor is connected to the stirring device;

[0006] The stirring device comprises a stirring shaft, a stirring fan blade, a stirring rod, a fixed connecting seat and a movable connecting seat; one end of the stirring shaft passes through the middle of the kettle cover and is fixedly connected to the rotating shaft of the motor through a coupling; the stirring shaft is rotatably connected to the kettle cover; the other end of the stirring shaft is fixedly connected to the stirring fan blade; the fixed connecting seat is provided on the stirring shaft above the stirring fan blade; the movable connecting seat is provided on the stirring shaft below the kettle cover; the stirring rods are evenly spaced along the circumferential direction of the stirring shaft between the movable connecting seat and the fixed connecting seat; the stirring rod is inclined to the rotation direction of the stirring shaft; one end of the stirring rod is connected to the movable connecting seat; the other end of the stirring rod is connected to the fixed connecting seat; the distance between the connection point on the movable connecting seat and the axis of the stirring shaft is greater than the distance between the connection point on the fixed connecting seat and the axis of the stirring shaft.

[0007] During operation, since the stirring blades are mostly placed at the center of the kettle body, the liquid in the kettle body will produce tangential flow driven by the stirring blades. When the viscosity of the liquid in the kettle body is not high and the rotation speed of the stirring blades is relatively high, even all the liquid in the kettle body will revolve around the stirring shaft. The liquid in the kettle body rushes to the inner wall of the kettle body under the action of centrifugal force, thereby causing the liquid level height of the stirring shaft attachment to be lower than the liquid level height of the kettle body side wall attachment, thereby forming a vortex (this flow pattern is called "swirling"). During swirling, especially near the center, there is almost no velocity gradient between different liquid layers, thereby forming a so-called "solid swirling part" of poor mixing zone, thereby affecting the mixing effect and thus affecting the production efficiency of epoxy resin; therefore, when preparing epoxy resin, first The raw materials are poured into the kettle body through the feeding hole (other raw materials that need to be added during the reaction are added through the holes for corresponding purposes), and then the heating device is started to heat the liquid in the kettle body to speed up the reaction speed of the resin in the kettle body, strengthen the mixing of the raw materials and enhance the heat transfer effect. Then the motor is started, and the motor drives the stirring shaft to rotate through the coupling, and then the stirring shaft drives the stirring blades to rotate, and then the rotating stirring blades push the liquid above the stirring blades upward along the axial direction of the stirring shaft, so that the liquid level of the stirring shaft attachment rises, and at the same time, under the action of centrifugal force, the liquid above the stirring blades gradually flows to the side wall of the cylinder, and due to the push of the stirring blades, the liquid below the stirring blades is continuously pushed upward, so that the liquid on the side wall of the kettle body The liquid flows along the side wall of the cylinder and the inner wall of the bottom of the kettle to the bottom of the stirring blade, thereby circulating the liquid in the kettle, and allowing different liquid layers to flow mutually, thereby eliminating the swirling phenomenon in the kettle during the stirring process, which causes uneven mixing and causes poor mixing effect, thereby improving the mixing efficiency of the liquid in the kettle, thereby improving the production efficiency of epoxy resin; the stirring shaft drives the stirring blade to rotate, and at the same time drives the fixed connecting seat and the movable connecting seat to rotate, because the two ends of the stirring rod are connected to the fixed connecting seat and the movable connecting seat, thereby driving the stirring rod to rotate, and because the stirring rod is inclined to the rotation direction of the stirring shaft, the stirring rod generates a downward component when pushing the liquid in the process of following the rotation of the stirring shaft, thereby making the liquid near the side wall of the kettle The liquid flows to the bottom of the kettle, thereby lowering the liquid level near the side wall of the kettle, further eliminating the swirling phenomenon, and at the same time accelerating the flow of the liquid near the side wall of the kettle, and then under the joint action of the stirring blades, the overall flow speed of the liquid in the kettle is accelerated, thereby increasing the mixing speed of the liquid in the kettle. Because the stirring rod is tilted in space (the stirring rod is tilted and the distance between the connection point on the mobile connecting seat and the axis of the stirring shaft is greater than the distance between the connection point on the fixed connecting seat and the axis of the stirring shaft), the degree of turbulence of the liquid flow in the kettle is increased in the process of the stirring rod following the rotation of the stirring shaft, thereby accelerating the reaction between the liquids, thereby improving the production efficiency of the epoxy resin, and the liquid in the kettle is discharged through the discharge hole after the reaction is completed.

[0008] Preferably, the heating device comprises a coil, a fixed protective cover and a heat-conducting member; the fixed protective cover is sleeved on the outer wall of the cylinder; the fixed protective cover is fixedly connected to the cylinder; the coil is arranged between the outer wall of the cylinder and the fixed protective cover; the coil is spirally wound on the inner wall of the fixed protective cover; the two ends of the coil are connected to the external power supply after passing through the fixed protective cover; the heat-conducting member is arranged in the kettle body; the heat-conducting member is in contact with the inner wall of the kettle body; the heat-conducting member is made of elastic material with good thermal conductivity; heat-conducting sheets are evenly cut out on the side wall of the heat-conducting member along the circumferential direction and the axial direction; the heat-conducting sheet is bent toward the inside of the heat-conducting member and the free end of the heat-conducting sheet is facing the axial direction of the heat-conducting member; the length of the heat-conducting sheets evenly arranged along the axial direction gradually increases; the stirring rod moves the heat-conducting sheet during rotation.

[0009] During operation, after the raw materials are poured into the kettle, alternating current is passed through the coil, and the magnetic metal cylinder generates heat under the action of the alternating electromagnetic field, thereby heating the liquid in the kettle. At this time, the heating efficiency of the liquid is low only by heat exchange at the position where the side wall of the kettle contacts the liquid. Therefore, a heat conductor is provided in the kettle, and the heat conductor is in contact with the cylinder. Since the heat conductor is made of an elastic material with good thermal conductivity, the heat generated by the side wall of the kettle is quickly transferred to the heat conductor. Since a heat conductive sheet is provided on the heat conductive sheet, and the heat conductive sheet extends to the center of the liquid, the liquid in the kettle is heated over a large area. Heat is generated, thereby improving the heating efficiency of the liquid in the kettle. At the same time, when the stirring rod rotates and contacts the heat conducting sheet, the heat conducting sheet will be deformed under the push of the stirring rod, and the heat conducting sheet pushes the liquid to move. After the stirring rod leaves the heat conducting sheet, it moves in the opposite direction under the elastic force of the heat conducting sheet itself, thereby causing the liquid that originally contacted the heat conducting sheet to flow away. Because the stirring rod moves the heat conducting sheet differently, the temperature of the liquid in contact with the heat conducting sheet is lower than the temperature of the heat conducting sheet, thereby ensuring that heat is always exchanged quickly between the liquid and the heat conducting sheet, thereby improving the heat exchange efficiency, thereby improving the liquid reaction efficiency, and thereby improving the production efficiency of the epoxy resin.

[0010] Preferably, the heat conducting plate is arranged obliquely along the rotation direction of the stirring shaft.

[0011] During operation, the heat conducting plate is tilted along the rotation direction of the stirring shaft, and in the process that the stirring rod contacts and pushes the heat conducting plate to move, the tilted heat conducting plate generates a component force toward the bottom of the kettle for the liquid in contact with the heat conducting plate, thereby pushing the liquid downward, thereby accelerating the flow of the liquid near the side wall of the kettle body, and then cooperating with the stirring fan blades to accelerate the overall flow speed of the liquid in the kettle body, thereby accelerating the mixing between the liquids, making the mixing more uniform, and at the same time accelerating the heat exchange between the liquid and the side wall and the heat conducting plate, thereby making the overall temperature of the liquid more stable, avoiding the temperature difference from affecting the reaction speed; when the heat conducting plate moves in the opposite direction, it will push the liquid in the lower layer to the upper layer, thereby increasing the flow between the liquid layers, thereby increasing the degree of turbulence of the liquid flow, further increasing the uniformity of mixing, and thereby improving the mixing and reaction effects.

[0012] Preferably, the heat conducting member is located on one side of the kettle bottom and abuts against the inner wall of the kettle bottom; the heat conducting member is provided with a slot on the end face of one side of the kettle cover; a boss is provided in the middle of the kettle cover; a anti-rotation clamping member is fixedly connected to the boss; and the anti-rotation clamping member cooperates with the slot.

[0013] During operation, the stirring rod continuously squeezes and pushes the heat conducting sheet during rotation, thereby causing the heat conducting member to be subjected to tangential force. If the heat conducting member is prevented from rotating only by the friction between the heat conducting member and the inner wall of the kettle body, it will rotate when the tangential force is too large, thereby causing wear of the heat conducting member and the kettle body. Therefore, a slot is provided on the heat conducting member, and a rotation-stopping clamp cooperates with the slot to prevent the heat conducting member from rotating when the tangential force is received. Therefore, during assembly, the rotation-stopping clamp only needs to be directly clamped in the slot, thereby facilitating installation. Moreover, because the rotation-stopping clamp is fixedly connected to the boss of the kettle cover, the rotation-stopping clamp is directly removed together with the kettle cover during disassembly, and the heat conducting member can be directly pulled out of the cylinder body, thereby facilitating disassembly. At the same time, the heat conducting member is tightly pressed against the side wall of the kettle body by the rotation-stopping clamp, thereby making the heat conducting member close to the side wall of the kettle body, thereby facilitating the transfer of heat on the kettle body to the heat conducting member to heat the liquid.

[0014] Preferably, the movable connecting seat is a split structure; the movable connecting seat includes a slip ring, a connecting rod and a support head; mounting holes are provided on the outer wall of the slip ring and one end of the support head; the mounting holes on the slip ring are evenly spaced; the two ends of the connecting rod are respectively connected to the mounting hole of the slip ring and the mounting hole on the support head; the slip ring is sleeved on the stirring shaft; a spline groove is provided on the inner wall of the slip ring; spline teeth are provided on the stirring shaft; the spline groove cooperates with the spline teeth; the other end of the support head is ball-jointed with one end of the stirring rod; the other end of the stirring rod is ball-jointed with the fixed connecting seat.

[0015] During operation, the epoxy resin prepared from different raw materials has different concentrations, and thus the flow speed of the liquid during stirring is different. Before changing the raw materials, it enters the soil through the manhole, and then the connecting rod is connected to different mounting holes on the slip ring. Because the two ends of the stirring rod are respectively ball-connected with the fixed connecting seat and the support head, and the slip ring is slidably connected to the stirring shaft through the spline groove and the spline teeth, the inclination angle of the stirring rod changes, and the magnitude of the component force generated by the stirring rod pushing the body liquid toward the bottom of the kettle during the rotation changes, thereby changing the downward flow speed of the liquid under the action of the stirring rod, which is suitable for eliminating the swirling phenomenon generated when different substances are stirred, thereby ensuring that different substances have a better mixing effect.

[0016] Preferably, slide grooves are evenly spaced along the circumferential direction on the stirring shaft between the fixed connecting seat and the movable connecting seat; stirring blades are arranged in the slide grooves; threaded holes are evenly spaced on the bottom surface of the slide grooves; and the stirring blades are fixedly connected in the slide grooves by bolts.

[0017] During operation, different liquids will generate vortexes of different depths when stirred. When the vortex is deep, only the stirring blades and the stirring rod are not enough to completely eliminate the vortex, which will affect the mixing of the liquid. Therefore, slide grooves are evenly spaced along the circumferential direction on the stirring shaft between the fixed connecting seat and the movable connecting seat, and stirring blades are arranged in the slide grooves. When the stirring shaft rotates, the stirring blades follow the rotation, thereby further eliminating the vortex, thereby avoiding the influence of the vortex on the mixing effect. Because the stirring blades can be locked in different threaded holes on the bottom of the slide groove by bolts, the stirring blades can be located at different heights on the stirring shaft, thereby adapting to different liquid level positions at different heights in the kettle, thereby increasing the range of eliminating vortexes.

[0018] Preferably, the end of the stirring fan blade is curled; the curling radius of the edge of the stirring fan blade close to the bottom of the kettle is greater than the curling radius of the edge of the stirring fan blade away from the bottom of the kettle.

[0019] During operation, the ends of the stirring fan blades are curled so that the curling radius of the side of the stirring fan blades close to the bottom of the kettle is larger than the curling radius of the side of the stirring fan blades away from the bottom of the kettle. As a result, during the rotation of the stirring fan blades, the rolled blades exert a radial force on the liquid, so that part of the liquid flowing downward along the side wall of the kettle body does not pass through the inner wall of the kettle bottom but flows directly to the stirring fan blades radially, thereby accelerating the flow speed of the liquid in the kettle body, thereby increasing the mixing of the liquid and accelerating the mutual flow between the liquid components, thereby increasing the reaction rate of the liquid and thereby improving the production efficiency of the epoxy resin.

[0020] Preferably, both ends of the connecting rod are threadedly connected to the mounting holes on the slip ring and the support head respectively; the screw directions of the threads at both ends of the connecting rod are opposite, and an operating part is provided in the middle of the connecting rod.

[0021] During operation, the two ends of the connecting rod are threadedly connected to the support head and the slip ring, and the spiral directions of the threads at both ends of the connecting rod are opposite. When adjusting the angle of the stirring rod, the operating part is rotated by using a tool to rotate the connecting rod, so that the connecting rod is locked or separated from the support head and the slip ring at the same time, thereby facilitating the installation and disassembly of the connecting rod, and facilitating the angle adjustment of the stirring rod.

[0022] Preferably, the stirring rod is a spiral structure; a locking screw hole is provided on the support head; and a locking bolt is provided in the locking screw hole.

[0023] During operation, the stirring rod is set to a spiral structure. Because the angle of the spiral stirring rod is changing, the force of the stirring rod pushing the liquid toward the bottom of the kettle is different during rotation, so that there are different velocity gradients between liquid layers, which makes the liquid layers exchange, thereby increasing the mixing of the liquids and improving the liquid mixing effect; because both ends of the stirring rod are ball-connected and will rotate, a locking screw hole is set on the support head, and the spherical surface on the stirring rod is tightened by the locking bolt, so as to fix the spiral stirring rod, so that the stirring rod remains in a state that is most conducive to stirring and pushing the liquid to move.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. In the present invention, raw materials are poured into the kettle body through the feeding hole (other raw materials that need to be added during the reaction are added through the holes for corresponding purposes), and then the heating device is started to heat the liquid in the kettle body to accelerate the reaction speed of the resin in the kettle body, strengthen the mixing of the raw materials and enhance the heat transfer effect. Then the motor is started, and then the motor drives the stirring shaft to rotate through the coupling, and then the stirring shaft drives the stirring blades to rotate, and then the rotating stirring blades push the liquid above the stirring blades upward along the axial direction of the stirring shaft, so that the liquid level of the stirring shaft attachment rises, and at the same time, under the action of centrifugal force, the liquid above the stirring blades gradually flows toward the side wall of the cylinder body. Due to the push of the stirring blades, the liquid below the stirring blades is continuously pushed upward, and then the liquid on the side wall of the kettle body flows along the side wall of the cylinder body and the inner wall of the kettle bottom to the bottom of the stirring blade, so that the liquid in the kettle body circulates, and different liquid layers can flow to each other, thereby eliminating the problem of uneven mixing and poor mixing effect caused by the swirling phenomenon in the kettle body during the stirring process, thereby improving the mixing efficiency of the liquid in the kettle body, and thereby improving the production efficiency of epoxy resin. rate; the stirring shaft drives the stirring blades to rotate, and at the same time drives the fixed connecting seat and the movable connecting seat to rotate. Because the two ends of the stirring rod are connected to the fixed connecting seat and the movable connecting seat, the stirring rod is driven to rotate. Because the stirring rod is inclined in the rotation direction of the stirring shaft, the stirring rod generates a downward component force when pushing the liquid in the process of following the rotation of the stirring shaft, so that the liquid near the side wall of the kettle body flows to the bottom of the kettle, thereby lowering the liquid level height of the side wall attachment of the kettle body, further eliminating the swirling phenomenon, and at the same time accelerating the flow of the liquid near the side wall of the kettle body, and then under the joint action of the stirring blades, the overall flow speed of the liquid in the kettle body is accelerated, thereby increasing the mixing speed of the liquid in the kettle body, because the stirring rod is in a spatial tilt (the stirring rod is tilted and the distance between the connection point on the movable connecting seat and the axis of the stirring shaft is greater than the distance between the connection point on the fixed connecting seat and the axis of the stirring shaft), and then the degree of disorder of the liquid flow in the kettle body is increased in the process of the stirring rod following the rotation of the stirring shaft, thereby accelerating the reaction between the liquids, thereby improving the production efficiency of the epoxy resin, and the liquid in the kettle body is discharged through the discharge hole after the reaction is completed.

[0026] 2. In the present invention, a heat conducting member is provided in the kettle body, and the heat conducting member is in contact with the cylinder body. Since the heat conducting member is made of an elastic material with good thermal conductivity, the heat generated by the side wall of the kettle body is quickly transferred to the heat conducting member. Since a heat conducting sheet is provided on the heat conducting member, and the heat conducting sheet extends to the central part of the liquid, the liquid in the kettle body is heated over a large range, thereby improving the heating efficiency of the liquid in the kettle body. At the same time, after the stirring rod contacts the heat conducting sheet during the rotation of the stirring rod, the heat conducting sheet will be deformed under the push of the stirring rod. At the same time, the heat conducting sheet pushes the liquid to move. After the stirring rod leaves the heat conducting sheet, it moves in the opposite direction under the action of the elastic force of the heat conducting sheet itself, thereby causing the liquid originally in contact with the heat conducting sheet to flow away. Because the stirring rod moves the heat conducting sheet differently, the temperature of the liquid in contact with the heat conducting sheet is lower than the temperature of the heat conducting sheet, thereby ensuring that heat exchange is always carried out quickly between the liquid and the heat conducting sheet, thereby improving the heat exchange efficiency, thereby improving the liquid reaction efficiency, and thereby improving the production efficiency of the epoxy resin.

[0027] 3. In the present invention, the heat conducting plate is tilted along the rotation direction of the stirring shaft, and then in the process of the stirring rod contacting and pushing the heat conducting plate to move, the tilted heat conducting plate generates a component force toward the bottom of the kettle for the liquid in contact with the heat conducting plate, thereby pushing the liquid to move downward, thereby accelerating the flow of the liquid near the side wall of the kettle body, and then cooperating with the stirring fan blades to accelerate the overall flow speed of the liquid in the kettle body, thereby accelerating the mixing between the liquids, making the mixing more uniform, and at the same time accelerating the heat exchange between the liquid and the side wall and the heat conducting plate, thereby making the overall temperature of the liquid more stable, avoiding the temperature difference from affecting the reaction speed; when the heat conducting plate moves in the opposite direction, it will push the liquid in the lower layer to the upper layer, thereby increasing the flow between the liquid layers, thereby increasing the degree of turbulence of the liquid flow, further increasing the uniformity of mixing, and thereby improving the mixing and reaction effects.

[0028] 4. In the present invention, a slot is provided on the heat conductive part, and a non-rotating clamp cooperates with the slot to prevent the heat conductive part from rotating when a tangential force is applied. Therefore, during assembly, the non-rotating clamp only needs to be directly clamped in the slot, which makes installation convenient. Furthermore, because the non-rotating clamp is fixedly connected to the boss of the kettle cover, the non-rotating clamp can be directly removed together with the kettle cover during disassembly, and the heat conductive part can be directly pulled out of the cylinder body, which makes disassembly easy. At the same time, the heat conductive part is tightly pressed against the side wall of the kettle body by the non-rotating clamp, so that the heat conductive part is tightly attached to the side wall of the kettle body, which is beneficial to transfer the heat on the kettle body to the heat conductive part to heat the liquid.

[0029] 5. In the present invention, since the epoxy resins prepared from different raw materials have different concentrations, and thus the flow speed of the liquid during stirring is different, the front line enters the soil body through the manhole before changing the raw materials, and then the connecting rod is connected to different mounting holes on the slip ring. Because the two ends of the stirring rod are respectively ball-connected with the fixed connecting seat and the support head, and because the slip ring is slidably connected to the stirring shaft through the spline groove and the spline teeth, the inclination angle of the stirring rod changes, and the magnitude of the component force generated by the stirring rod pushing the body fluid toward the bottom of the kettle during the rotation changes, thereby changing the downward flow speed of the liquid under the action of the stirring rod, and is suitable for eliminating the swirling phenomenon generated when different substances are stirred, thereby ensuring that different substances have a good mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the overall structure of the reactor in the present invention;

[0032] Figure 2 It is an exploded diagram of the reactor in the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the reactor in the present invention;

[0034] Figure 4 It is a schematic diagram of the arrangement of the stirring rods in the present invention;

[0035] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0036] Figure 6 It is a schematic diagram of the structure of the heat conducting member in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the stirring fan blade in the present invention;

[0038] Figure 8 It is a structural schematic diagram of the stirring shaft in the present invention;

[0039] In the figure: cylinder 11, kettle bottom 12, discharge hole 121, kettle cover 13, manhole 131, feeding hole 132, boss 133, motor 2, fixed seat 21, stirring device 3, stirring shaft 31, spline teeth 311, slide groove 312, stirring fan blade 32, stirring rod 33, fixed connecting seat 34, movable connecting seat 35, slip ring 351, connecting rod 352, support head 353, mounting hole 354, locking screw hole 3531, heating device 4, coil 41, fixed protective cover 42, heat conducting member 43, heat conducting sheet 431, slot 432, anti-rotation pressing member 5, stirring blade 6. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, a reaction kettle for preparing epoxy resin comprises a cylinder 11, a kettle bottom 12, a kettle cover 13, a motor 2, a fixing seat 21, a stirring device 3 and a heating device 4; the kettle bottom 12 and the kettle cover 13 are respectively arranged at two ends of the cylinder 11; the kettle bottom 12 and the kettle cover 13 are both fixedly connected to the cylinder 11; the kettle bottom 12 is provided with a discharge hole 121 and holes for other purposes; the kettle cover 13 is provided with a manhole 131, a feeding hole 132 and holes for other purposes; the heating device 4 is arranged on the outer wall of the cylinder 11; the heating device 4 is used to heat the resin in the kettle body formed by the cylinder 11, the kettle bottom 12 and the kettle cover 13; the stirring device 3 is arranged in the cylinder 11; the kettle cover 13 is fixedly connected to the fixing seat 21; the fixing seat 21 is fixedly connected to the mounting seat of the motor 2; the rotating shaft of the motor 2 is connected to the stirring device 3;

[0042] The stirring device 3 includes a stirring shaft 31, a stirring blade 32, a stirring rod 33, a fixed connection seat 34 and a movable connection seat 35; one end of the stirring shaft 31 passes through the middle of the kettle cover 13 and is fixedly connected to the rotating shaft of the motor 2 through a coupling; the stirring shaft 31 is rotatably connected to the kettle cover 13; the other end of the stirring shaft 31 is fixedly connected to the stirring blade 32; the stirring shaft 31 is provided with the fixed connection seat 34 above the stirring blade 32; the stirring shaft 31 is provided with the movable connection seat 35 below the kettle cover 13 Connecting seat 35; the stirring rods 33 are evenly spaced between the movable connecting seat 35 and the fixed connecting seat 34 along the circumferential direction of the stirring shaft 31; the stirring rods 33 are inclined toward the rotation direction of the stirring shaft 31; one end of the stirring rod 33 is connected to the movable connecting seat 35; the other end of the stirring rod 33 is connected to the fixed connecting seat 34; the distance between the connection point on the movable connecting seat 35 and the axis of the stirring shaft 31 is greater than the distance between the connection point on the fixed connecting seat 34 and the axis of the stirring shaft 31.

[0043] During operation, since the stirring blades are mostly placed at the center of the kettle body, the liquid in the kettle body will produce tangential flow driven by the stirring blades. When the viscosity of the liquid in the kettle body is not high and the rotation speed of the stirring blades 6 is relatively high, all the liquid in the kettle body will even revolve around the stirring shaft 31. The liquid in the kettle body rushes to the inner wall of the kettle body under the action of centrifugal force, thereby causing the liquid level height near the stirring shaft 31 to be lower than the liquid level height near the side wall of the kettle body, thereby forming a vortex (this flow pattern is called "swirling"). During swirling, especially near the center, there is almost no velocity gradient between different liquid layers, thereby forming a so-called "solid swirling part" of a poor mixing zone, thereby affecting the mixing effect and the production efficiency of the epoxy resin. Therefore, when preparing epoxy resin, the raw materials are first poured into the kettle body through the feeding hole 132 (other raw materials that need to be added during the reaction are added through the holes for corresponding purposes), and then the heating device 4 is started to heat the liquid in the kettle body to accelerate the reaction of the resin in the kettle body. The stirring blade 32 is driven by the motor 2 to rotate, and the stirring shaft 31 is driven by the motor 2 to rotate. The stirring shaft 31 drives the stirring blade 32 to rotate. The rotating stirring blade 32 pushes the liquid above the stirring blade 32 upward along the axis direction of the stirring shaft 31, so that the liquid level near the stirring shaft 31 rises. At the same time, under the action of centrifugal force, the liquid above the stirring blade 32 gradually flows toward the side wall of the cylinder 11. Due to the push of the stirring blade 32, the liquid below the stirring blade 32 is continuously pushed upward, and the liquid on the side wall of the kettle body flows along the side wall of the cylinder 11 and the inner wall of the kettle bottom 12 to the bottom of the stirring blade 32, so that the liquid in the kettle body circulates, and different liquid layers can flow with each other, thereby eliminating the problem of uneven mixing and poor mixing effect caused by swirling in the kettle body during the stirring process, thereby improving the mixing efficiency of the liquid in the kettle body, and thereby improving the production efficiency of the epoxy resin;The stirring shaft 31 drives the stirring blades 32 to rotate, and at the same time drives the fixed connecting seat 34 and the movable connecting seat 35 to rotate. Because the two ends of the stirring rod 33 are connected to the fixed connecting seat 34 and the movable connecting seat 35, the stirring rod 33 is driven to rotate. Because the stirring rod 33 is inclined to the rotation direction of the stirring shaft 31, the stirring rod 33 generates a downward component when pushing the liquid in the process of following the rotation of the stirring shaft 31, so that the liquid near the side wall of the kettle body flows to the bottom 12 of the kettle body, thereby lowering the liquid level height of the side wall of the kettle body, further eliminating the swirling phenomenon, and at the same time accelerating the flow of the liquid near the side wall of the kettle body, thereby Under the joint action of the fan blades 32, the overall flow speed of the liquid in the kettle is accelerated, thereby increasing the mixing speed of the liquid in the kettle, because the stirring rod 33 is in a spatial tilt (the stirring rod 33 is tilted and the distance between the connection point on the mobile connection seat 35 and the axis of the stirring shaft 31 is greater than the distance between the connection point on the fixed connection seat 34 and the axis of the stirring shaft 31), and thus the degree of turbulence of the liquid flow in the kettle is increased during the process of the stirring rod 33 following the rotation of the stirring shaft 31, thereby accelerating the reaction between the liquids, thereby improving the production efficiency of the epoxy resin, and the liquid in the kettle is discharged through the discharge hole 121 after the reaction is completed. ;

[0044] like Figures 1 to 6 As shown, the heating device 4 includes a coil 41, a fixed protective cover 42 and a heat-conducting member 43; the fixed protective cover 42 is sleeved on the outer wall of the cylinder 11; the fixed protective cover 42 is fixedly connected to the cylinder 11; the coil 41 is arranged between the outer wall of the cylinder 11 and the fixed protective cover 42; the coil 41 is spirally wound on the inner wall of the fixed protective cover 42; the two ends of the coil 41 pass through the fixed protective cover 42 and are connected to the external power supply; the heat-conducting member 43 is arranged in the kettle; The heat conductive member 43 is in contact with the inner wall of the kettle body; the heat conductive member 43 is made of an elastic material with good thermal conductivity; heat conductive sheets 431 are cut out on the side wall of the heat conductive member 43 at uniform intervals along the circumferential direction and the axial direction; the heat conductive sheets 431 are bent toward the inside of the heat conductive member 43 and the free ends of the heat conductive sheets 431 are facing the axial direction of the heat conductive member 43; the lengths of the heat conductive sheets 431 uniformly spaced along the axial direction gradually increase; the stirring rod 33 moves the heat conductive sheets 431 during the rotation.

[0045] During operation, after the raw materials are poured into the kettle, alternating current is passed through the coil 41, and the magnetic metal cylinder 11 generates heat under the action of the alternating electromagnetic field, thereby heating the liquid in the kettle. At this time, the heating efficiency of the liquid is low only by heat exchange at the position where the side wall of the kettle contacts the liquid. Therefore, a heat conductor 43 is provided in the kettle, and the heat conductor 43 contacts the cylinder 11. Since the heat conductor 43 is made of an elastic material with good thermal conductivity, the heat generated by the side wall of the kettle is quickly transferred to the heat conductor 43. Since the heat conductor 43 is provided with a heat conductive sheet 431, and the heat conductive sheet 431 extends to the center of the liquid, the liquid in the kettle is heated over a large area, thereby improving the The heating efficiency of the liquid in the kettle body is improved. At the same time, when the stirring rod 33 rotates, the heat conductive sheet 431 contacts the heat conductive sheet 431, and the heat conductive sheet 431 is deformed under the push of the stirring rod 33. At the same time, the heat conductive sheet 431 pushes the liquid to move. After the stirring rod 33 leaves the heat conductive sheet 431, it moves in the opposite direction under the elastic force of the heat conductive sheet 431 itself, thereby causing the liquid that originally contacted the heat conductive sheet 431 to flow away. Because the stirring rod 33 pushes the heat conductive sheet 431 differently, the temperature of the liquid that contacts the heat conductive sheet 431 is lower than the temperature of the heat conductive sheet 431, thereby ensuring that heat exchange between the liquid and the heat conductive sheet 431 is always rapid, thereby improving the heat exchange efficiency, thereby improving the liquid reaction efficiency, and thereby improving the production efficiency of the epoxy resin.

[0046] like Figure 3 , Figure 4 and Figure 6 As shown, the heat conducting sheet 431 is tilted along the rotation direction of the stirring shaft 31 .

[0047] During operation, by tilting the heat conductive sheet 431 along the rotation direction of the stirring shaft 31, when the stirring rod 33 contacts and pushes the heat conductive sheet 431 to move, the tilted heat conductive sheet 431 generates a component force toward the bottom 12 of the kettle for the liquid in contact with the heat conductive sheet 431, thereby pushing the liquid to move downward, thereby accelerating the flow of the liquid near the side wall of the kettle body, and then cooperating with the stirring blades 32 to accelerate the overall flow speed of the liquid in the kettle body, thereby accelerating the mixing between the liquids, making the mixing more uniform, and at the same time accelerating the heat exchange between the liquid and the side wall and the heat conductive sheet 431, thereby making the overall temperature of the liquid more stable, avoiding the temperature difference from affecting the reaction speed; when the heat conductive sheet 431 moves in the opposite direction, it will push the liquid in the lower layer to the upper layer, thereby increasing the flow between the liquid layers, thereby increasing the degree of turbulence of the liquid flow, further increasing the uniformity of the mixing, and thereby improving the mixing and reaction effects.

[0048] like Figures 3 to 5As shown, the heat conducting member 43 is located on one side of the kettle bottom 12 and abuts against the inner wall of the kettle bottom 12; a slot 432 is provided on the end face of the heat conducting member 43 located on one side of the kettle cover 13; a boss 133 is provided in the middle of the kettle cover 13; a rotation-stopping clamp 5 is fixedly connected to the boss 133; the rotation-stopping clamp 5 cooperates with the slot 432.

[0049] During operation, since the stirring rod 33 continuously squeezes and pushes the heat conducting sheet 431 during the rotation process, the heat conducting member 43 is subjected to a tangential force. If the heat conducting member 43 is prevented from rotating only by the friction between the heat conducting member 43 and the inner wall of the kettle body, the heat conducting member 43 will rotate when the tangential force is too large, which will cause wear of the heat conducting member 43 and the kettle body. Therefore, a slot 432 is provided on the heat conducting member 43, and a rotation-stopping pressing member 5 is used to cooperate with the slot 432 to prevent the heat conducting member 43 from rotating when the tangential force is received. The rotating clamping piece 5 can be directly stuck in the clamping groove 432, which is convenient for installation. Because the anti-rotation clamping piece 5 is fixedly connected to the boss 133 of the kettle cover 13, the anti-rotation clamping piece 5 can be directly removed together with the kettle cover 13 during disassembly, and the heat conductive piece 43 can be directly pulled out from the cylinder 11, which is convenient for disassembly. At the same time, the heat conductive piece 43 is tightly pressed against the side wall of the kettle body by the anti-rotation clamping piece 5, so that the heat conductive piece 43 is tightly attached to the side wall of the kettle body, which is beneficial to the heat on the kettle body to be transferred to the heat conductive piece 43 to heat the liquid.

[0050] like Figure 2 and Figure 4 As shown, the movable connecting seat 35 is a split structure; the movable connecting seat 35 includes a slip ring 351, a connecting rod 352 and a support head 353; mounting holes 354 are provided on the outer wall of the slip ring 351 and one end of the support head 353; the mounting holes 354 on the slip ring 351 are evenly spaced; the two ends of the connecting rod 352 are respectively connected to the mounting holes of the slip ring 351 and the mounting holes on the support head 353; the slip ring 351 is sleeved on the stirring shaft 31; a spline groove is provided on the inner wall of the slip ring 351; a spline tooth 311 is provided on the stirring shaft 31; the spline groove cooperates with the spline tooth 311; the other end of the support head 353 is ball-jointed with one end of the stirring rod 33; the other end of the stirring rod 33 is ball-jointed with the fixed connecting seat 34.

[0051] During operation, the epoxy resins prepared from different raw materials have different concentrations, and thus the flow speed of the liquid during stirring is different. Before changing the raw materials, the epoxy resin enters the soil through the manhole 131, and then the connecting rod 352 is connected to different mounting holes 354 on the slip ring 351. Because the two ends of the stirring rod 33 are respectively ball-jointed with the fixed connecting seat 34 and the support head 353, and because the slip ring 351 is slidably connected to the stirring shaft 31 through the spline groove and the spline teeth 311, the inclination angle of the stirring rod 33 is changed, and the magnitude of the component force generated by the stirring rod 33 pushing the body fluid toward the bottom of the kettle 12 during the rotation is changed, thereby changing the downward flow speed of the liquid under the action of the stirring rod 33, and thus being suitable for eliminating the swirling phenomenon generated when different substances are stirred, thereby ensuring that different substances have a better mixing effect.

[0052] like Figure 2 and Figure 4 As shown, slide grooves 312 are evenly spaced along the circumferential direction on the stirring shaft 31 between the fixed connecting seat 34 and the movable connecting seat 35; a stirring blade 6 is arranged in the slide groove 312; threaded holes are evenly spaced on the bottom surface of the slide groove 312; the stirring blade 6 is fixedly connected in the slide groove 312 by bolts.

[0053] During operation, different liquids will generate vortexes of different depths during stirring. When the vortex is deep, the stirring blades 32 and the stirring rods 33 alone are not enough to completely eliminate the vortex, which will affect the mixing of the liquid. Therefore, the slide grooves 312 are evenly spaced along the circumferential direction on the stirring shaft 31 between the fixed connecting seat and the movable connecting seat 35, and a stirring blade 6 is arranged in the slide groove 312. When the stirring shaft 31 rotates, the stirring blade 6 follows the rotation, thereby further eliminating the vortex, thereby avoiding the influence of the vortex on the mixing effect. Because the stirring blade 6 can be locked in different threaded holes on the bottom surface of the slide groove 312 by bolts, the stirring blade 6 is at different heights on the stirring shaft 31, thereby adapting to different heights of the liquid level in the kettle, thereby increasing the range of eliminating the vortex.

[0054] like Figure 4 and Figure 7 As shown, the end of the stirring blade 32 is curled; the curling radius of the side of the stirring blade 32 close to the bottom 12 of the kettle is greater than the curling radius of the side of the stirring blade 32 away from the bottom 12 of the kettle.

[0055] During operation, the end of the stirring blade 32 is curled so that the curling radius of the side of the stirring blade 32 close to the bottom 12 of the kettle is larger than the curling radius of the side of the stirring blade 32 away from the bottom 12 of the kettle. In the process of rotation of the stirring blade 32, the curled blade exerts a radial force on the liquid, so that part of the liquid flowing downward along the side wall of the kettle body does not pass through the inner wall of the bottom 12 of the kettle body but directly flows radially to the stirring blade 32, thereby accelerating the flow speed of the liquid in the kettle body, thereby increasing the mixing of the liquid and accelerating the mutual flow between the liquid components, thereby increasing the reaction rate of the liquid, thereby improving the production efficiency of the epoxy resin.

[0056] like Figures 2 to 4 As shown, both ends of the connecting rod 352 are threadedly connected to the mounting holes 354 on the slip ring 351 and the support head 353 respectively; the screw directions of the threads at both ends of the connecting rod 352 are opposite, and an operating part is provided in the middle of the connecting rod 352.

[0057] During operation, the two ends of the connecting rod 352 are threadedly connected to the support head 353 and the slip ring 351, and the screw directions of the threads at the two ends of the connecting rod 352 are opposite. When adjusting the angle of the stirring rod 33, the operating part is rotated by using a tool to rotate the connecting rod 352, so that the connecting rod 352 is locked or separated from the support head 353 and the slip ring 351 at the same time, thereby facilitating the installation and disassembly of the connecting rod 352 and facilitating the angle adjustment of the stirring rod 33.

[0058] like Figure 4 and Figure 5 As shown, the stirring rod 33 is a spiral structure; a locking screw hole 3531 is provided on the support head 353; and a locking bolt is provided in the locking screw hole 3531.

[0059] During operation, by setting the stirring rod 33 to a spiral structure, because the angle of the spiral stirring rod 33 is changing, the stirring rod 33 pushes the liquid toward the bottom of the kettle 12 in different sizes during rotation, so that there are different velocity gradients between liquid layers, which enables exchange between liquid layers, thereby increasing the mixing of liquids and improving the liquid mixing effect; since both ends of the stirring rod 33 are ball-connected and will rotate, a locking screw hole 3531 is provided on the support head 353, and the spherical surface of the stirring rod 33 is tightened by the locking bolt, thereby fixing the spiral stirring rod 33, so that the stirring rod 33 remains in a state that is most conducive to stirring and pushing the liquid to move.

[0060] During operation, when preparing epoxy resin, firstly, the raw materials are poured into the kettle body through the feeding hole 132 (other raw materials that need to be added during the reaction are added through the holes for corresponding purposes), and then the heating device 4 is started to heat the liquid in the kettle body to accelerate the reaction speed of the resin in the kettle body, strengthen the mixing of the raw materials and enhance the heat transfer effect, and then the motor 2 is started, and then the motor 2 drives the stirring shaft 31 to rotate through the coupling, and then the stirring shaft 31 drives the stirring blades 32 to rotate, and then the rotating stirring blades 32 push the liquid above the stirring blades 32 upward along the axial direction of the stirring shaft 31, so that the stirring shaft 31 is attached The liquid level rises, and at the same time, under the action of centrifugal force, the liquid above the stirring blades 32 gradually flows toward the side wall of the cylinder 11. Due to the push of the stirring blades 32, the liquid below the stirring blades 32 is continuously pushed upward, and then the liquid on the side wall of the kettle body flows along the side wall of the cylinder 11 and the inner wall of the kettle bottom 12 to below the stirring blades 32, thereby allowing the liquid in the kettle body to circulate, and then different liquid layers can flow with each other, thereby eliminating the problem of swirling in the kettle body during the stirring process, which causes uneven mixing and poor mixing effect, thereby improving the mixing efficiency of the liquid in the kettle body, and thereby improving the production efficiency of the epoxy resin; The stirring shaft 31 drives the stirring blades 32 to rotate, and at the same time drives the fixed connecting seat 34 and the movable connecting seat 35 to rotate. Because the two ends of the stirring rod 33 are connected to the fixed connecting seat 34 and the movable connecting seat 35, the stirring rod 33 is driven to rotate. Because the stirring rod 33 is inclined to the rotation direction of the stirring shaft 31, the stirring rod 33 generates a downward component when pushing the liquid in the process of following the rotation of the stirring shaft 31, so that the liquid near the side wall of the kettle body flows to the bottom 12 of the kettle body, thereby lowering the liquid level height of the side wall of the kettle body, further eliminating the swirling phenomenon, and at the same time accelerating the flow of the liquid near the side wall of the kettle body, thereby Under the joint action of the fan blades 32, the overall flow speed of the liquid in the kettle is accelerated, thereby increasing the mixing speed of the liquid in the kettle. This is because the stirring rod 33 is tilted in space (the stirring rod 33 is tilted and the distance between the connection point on the movable connecting seat 35 and the axis of the stirring shaft 31 is greater than the distance between the connection point on the fixed connecting seat 34 and the axis of the stirring shaft 31). As a result, the stirring rod 33 increases the degree of turbulence of the liquid flow in the kettle during the rotation following the stirring shaft 31, thereby accelerating the reaction between the liquids, thereby improving the production efficiency of the epoxy resin, and the liquid in the kettle is discharged through the discharge hole 121 after the reaction is completed.

[0061] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A reaction kettle for preparing epoxy resin, characterized in that: The invention comprises a cylinder (11), a kettle bottom (12), a kettle cover (13), a motor (2), a fixing seat (21), a stirring device (3) and a heating device (4); the kettle bottom (12) and the kettle cover (13) are respectively arranged at two ends of the cylinder (11); the kettle bottom (12) and the kettle cover (13) are both fixedly connected to the cylinder (11); the kettle bottom (12) is provided with a discharge hole (121) and holes for other purposes; the kettle cover (13) is provided with a manhole (131), a feeding hole (132) and a heating device (4); The heating device (4) is provided on the outer wall of the cylinder (11); the heating device (4) is used to heat the resin in the kettle body formed by the cylinder (11), the kettle bottom (12) and the kettle cover (13); the stirring device (3) is provided in the cylinder (11); the kettle cover (13) is fixedly connected to the fixing seat (21); the fixing seat (21) is fixedly connected to the mounting seat of the motor (2); the rotating shaft of the motor (2) is connected to the stirring device (3); The stirring device (3) comprises a stirring shaft (31), a stirring blade (32), a stirring rod (33), a fixed connection seat (34) and a movable connection seat (35); one end of the stirring shaft (31) passes through the middle of the kettle cover (13) and is fixedly connected to the rotating shaft of the motor (2) through a coupling; the stirring shaft (31) is rotatably connected to the kettle cover (13); the other end of the stirring shaft (31) is fixedly connected to the stirring blade (32); the stirring shaft (31) is provided with the fixed connection seat (34) above the stirring blade (32); the stirring shaft (31) is provided with a movable connection seat (35) below the kettle cover (13); The movable connecting seat (35) is provided with the stirring rods (33) at even intervals between the movable connecting seat (35) and the fixed connecting seat (34) along the circumferential direction of the stirring shaft (31); the stirring rods (33) are inclined in the rotation direction of the stirring shaft (31); one end of the stirring rod (33) is connected to the movable connecting seat (35); the other end of the stirring rod (33) is connected to the fixed connecting seat (34); the distance between the connection point on the movable connecting seat (35) and the axis of the stirring shaft (31) is greater than the distance between the connection point on the fixed connecting seat (34) and the axis of the stirring shaft (31).

2. A reaction kettle for preparing epoxy resin according to claim 1, characterized in that: The heating device (4) comprises a coil (41), a fixed protective cover (42) and a heat-conducting member (43); the fixed protective cover (42) is sleeved on the outer wall of the cylinder (11); the fixed protective cover (42) is fixedly connected to the cylinder (11); the coil (41) is arranged between the outer wall of the cylinder (11) and the fixed protective cover (42); the coil (41) is spirally wound on the inner wall of the fixed protective cover (42); both ends of the coil (41) pass through the fixed protective cover (42) and are connected to an external power supply; the heat-conducting member (43) is arranged in the kettle ); the heat-conducting member (43) is in contact with the inner wall of the kettle body; the heat-conducting member (43) is made of an elastic material with good thermal conductivity; heat-conducting sheets (431) are cut out from the side wall of the heat-conducting member (43) at uniform intervals along the circumferential direction and the axial direction; the heat-conducting sheets (431) are bent toward the inside of the heat-conducting member (43) and the free end of the heat-conducting sheet (431) faces the axial direction of the heat-conducting member (43); the length of the heat-conducting sheets (431) uniformly spaced along the axial direction gradually increases; the stirring rod (33) moves the heat-conducting sheets (431) during the rotation process.

3. A reaction kettle for preparing epoxy resin according to claim 2, characterized in that: The heat conducting sheet (431) is arranged obliquely along the rotation direction of the stirring shaft (31).

4. A reaction kettle for preparing epoxy resin according to claim 3, characterized in that: The heat conducting member (43) is located on one side of the kettle bottom (12) and abuts against the inner wall of the kettle bottom (12); a clamping groove (432) is provided on the end surface of one side of the kettle cover (13); a boss (133) is provided in the middle of the kettle cover (13); a rotation-stopping clamping member (5) is fixedly connected to the boss (133); and the rotation-stopping clamping member (5) cooperates with the clamping groove (432).

5. A reaction kettle for preparing epoxy resin according to claim 4, characterized in that: The movable connection seat (35) is a split structure; the movable connection seat (35) comprises a slip ring (351), a connecting rod (352) and a support head (353); mounting holes are arranged on the outer wall of the slip ring (351) and one end of the support head (353); the mounting holes on the slip ring (351) are arranged at even intervals; the two ends of the connecting rod (352) are respectively connected to the mounting holes of the slip ring (351) and the mounting holes on the support head (353); the slip ring (351) is sleeved on the stirring shaft (31); a spline groove is arranged on the inner wall of the slip ring (351); spline teeth (311) are arranged on the stirring shaft (31); the spline groove cooperates with the spline teeth (311); the other end of the support head (353) is ball-jointed with one end of the stirring rod (33); the other end of the stirring rod (33) is ball-jointed with the fixed connection seat (34).

6. A reaction kettle for preparing epoxy resin according to claim 5, characterized in that: Slide grooves (312) are evenly spaced apart along the circumferential direction on the stirring shaft (31) between the fixed connection seat (34) and the movable connection seat (35); stirring blades (6) are arranged in the slide grooves (312); threaded holes are evenly spaced apart on the bottom surface of the slide grooves (312); and the stirring blades (6) are fixedly connected in the slide grooves (312) by bolts.

7. A reaction kettle for preparing epoxy resin according to claim 6, characterized in that: The end of the stirring blade (32) is curled; the curling radius of the side of the stirring blade (32) close to the bottom of the kettle (12) is greater than the curling radius of the side of the stirring blade (32) away from the bottom of the kettle (12).

8. A reaction kettle for preparing epoxy resin according to claim 7, characterized in that: The two ends of the connecting rod (352) are respectively threadedly connected to the mounting holes on the slip ring (351) and the support head (353); the screw threads at the two ends of the connecting rod (352) have opposite spiral directions, and an operating portion is provided in the middle of the connecting rod (352).

9. A reaction kettle for preparing epoxy resin according to claim 8, characterized in that: The stirring rod (33) is a spiral structure; a locking screw hole (3531) is provided on the support head (353); and a locking bolt is provided in the locking screw hole (3531).

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