Impurity removal device for methyl vinyl cyclosiloxane mixture

Abstract

A methyl vinyl cyclosiloxane mixture impurity removal device comprises a material receiving barrel, a fractionation barrel is connected above the material receiving barrel, the fractionation barrel is upwards connected with a material barrel, a collecting beam pipe is arranged in the fractionation barrel, the collecting beam pipe is communicated with the material barrel at the top, the bottom of the collecting beam pipe penetrates through the bottom wall of the fractionation barrel to enter the material receiving barrel, the upper portion of the fractionation barrel is connected with a flow inlet pipe, and the bottom of the fractionation barrel is connected with a flow outlet pipe. According to the impurity removal device for the methyl vinyl cyclosiloxane mixture, impurities of materials in the collecting beam pipe are vaporized by utilizing the temperature of steam in the fractionation barrel, the collecting beam pipe is in contact with the steam, the heat conduction efficiency is high, the heat conduction area is large, the impurities can be rapidly heated and vaporized, bubbles are wrapped and held into the material receiving barrel at the bottom to be separated, and the separation efficiency is improved. And foreign gas is extracted.

Description

Technical Field

[0001] The present invention relates to the field of fractionation and impurity removal, and particularly to an impurity removal device for a methyl vinyl cyclosiloxane mixture. Background Art

[0002] Methyl vinyl cyclosiloxane is a class of cyclic organosilicon compounds containing methyl and vinyl groups, and common structures include D3Vi (hexamethyl trivinyl cyclotrisiloxane), D4Vi (octamethyl tetravinyl cyclotetrasiloxane), etc. Due to its unique reactivity and stability, methyl vinyl cyclosiloxane has an irreplaceable position in the field of high-end materials and has great potential in future fields such as new energy (such as lithium battery sealing) and flexible electronics.

[0003] Inevitably, there will be residual impurities in the preparation process of methyl vinyl cyclosiloxane, and the impurities mainly come from raw materials, side reactions, and catalyst residues. Methyl vinyl cyclosiloxane is usually a colorless transparent liquid or a low-viscosity oily substance, and its boiling point varies with the size of the cyclic body. For example, the boiling point of D4Vi is about 175–185 °C (atmospheric pressure), and it is heat-resistant (decomposition temperature > 250 °C), suitable for high-temperature application scenarios. Based on the significant difference in boiling points between methyl vinyl cyclosiloxane and the main impurities, impurities are currently removed by fractionation technology.

[0004] However, the current fractionation device uses the boiling point differences of the components in the mixture to achieve separation through multiple vaporization-condensation cycles. The overall fractionation device is complex, suitable for large-batch fractionation, and has low impurity removal efficiency. The present invention provides an impurity removal device for a methyl vinyl cyclosiloxane mixture, which can be applicable to small-batch impurity removal and continuous and efficient impurity removal in batches. Summary of the Invention

[0005] According to the problems raised in the background art, the present invention provides an impurity removal device for a methyl vinyl cyclosiloxane mixture to solve, and the following is a further elaboration of the present invention.

[0006] An impurity removal device for a methyl vinyl cyclosiloxane mixture includes a material receiving cylinder, a fractionation cylinder is connected above the material receiving cylinder, a material cylinder is connected upward to the fractionation cylinder, a cluster flow tube is arranged inside the fractionation cylinder, the cluster flow tube communicates with the material cylinder at the top, penetrates the bottom wall of the fractionation cylinder at the bottom and enters the material receiving cylinder, an inlet flow tube is connected to the upper part of the fractionation cylinder, and an outlet flow tube is connected to the bottom.

[0007] Preferably, the material receiving cylinder includes a plurality of sub-material receiving cylinders connected in communication, an air outlet pipe is connected to one of the sub-material receiving cylinders, and the sub-material receiving cylinders are connected in communication through at least two groups of communicating pipes with different heights. The connected sub-material receiving cylinders are intended to increase the storage volume of the material flow, and at the same time provide sufficient static time, so that the impurity gas entrained in the material flow can float up and escape from the air outlet pipe at the top.

[0008] Preferably, the upper part of the cluster flow tube is connected with a flow divider, the flow divider is connected with each flow tube of the cluster flow tube, and the bottom of the barrel is provided with a discharge port. The logistics forms a certain liquid height in the flow divider, and the flow rate of the logistics entering the cluster flow tube is within the target range by controlling the fluctuation range of the logistics liquid level height.

[0009] Preferably, the barrel is built with a filter cartridge assembly, which includes a barrel, a flow hole arranged along the axial direction of the barrel is arranged on the side wall of the barrel, and a sealing plate is rotatably connected to the outer wall of the barrel; a plurality of ear groups are arranged on the circumference of the top of the barrel, and the ear groups include two adjacent ears, which are connected by a slip ring, and a latch is fixedly connected to the slip ring, and a pin ring is connected to the top of the sealing plate, and a spring sleeved on the slip ring is also arranged between the two ears of the ear group, and the two ends of the spring are respectively in contact with the latch and one of the ears of the ear group. The latch is tightly against the ear under the elastic force of the spring, and the barrel is in a closed state when it is hoisted; after being hoisted into place, the slip ring is rotated to disengage the latch from the pin ring, and the sealing plate rotates and rests against the inner wall of the barrel under the lateral pressure of the internal material, and the material in the barrel enters the barrel through the flow hole.

[0010] Preferably, the pin shaft of the latch and the pin ring is provided with an inclined surface, the inner wall of the barrel is provided with a radially protruding support, and the bottom of the support is also provided with an inclined surface. When the barrel needs to be hoisted and taken out, during the initial short height process after the barrel is lifted, the pin ring on the top of the sealing plate moves up against the inner wall of the barrel, and gradually closes under the restriction of the inclined surface. At the end of the closing, the pin ring squeezes the inclined surface of the latch, causing the latch to retreat a short distance, and the latch overlaps with the pin ring and overlaps and inserts into the pin ring under the action of the spring, completing the re-locking of the sealing plate and maintaining the closure of the barrel.

[0011] Preferably, the top plate of the barrel is connected to a suspension arm, the suspension arm is connected to a clamp, and the support platform is provided with a clamping slot. The clamping slot can complete the load positioning of the barrel.

[0012] Preferably, a grip ring is connected to the slip ring, and the grip ring is intended to be used as a gripping component for an operator to rotate the slip ring to slide on the bracket.

[0013] Preferably, a filter screen is provided inside the barrel, and the filter screen is provided to trap residues in the barrel.

[0014] Preferably, the material barrel is also built with a stirring assembly, including a stirring shaft and a connecting rod connected to the stirring shaft, a scraper is connected to the connecting rod, the outer edge of the scraper is in contact with the filter screen, and the stirring shaft rotates in a controlled manner. The scraper sweeps the inner wall of the filter screen during rotation, scraping off the residues trapped and attached to the inner wall of the filter screen to avoid clogging the filter screen and reducing the material flow rate.

[0015] Preferably, an impeller is built into the top of the fractionation barrel, the upper and lower ends of the impeller are connected to brackets, the inner wall of the fractionation barrel is connected to a load-bearing slide rail, the bracket slides on the load-bearing slide rail, the inlet pipe faces the impeller blades, the bracket is connected to a transfer tank through a support arm, the middle of the transfer tank is connected to a docking seat, the bottom of the transfer tank is provided with a leak, and the bottom end of the stirring shaft passes through the barrel and is connected to the docking seat. The power for the rotation of the stirring shaft comes from steam, and no additional power device is required.

[0016] Preferably, a sealing cover is connected to the transfer tank, which will intermittently block the discharge port of the barrel, and when the machine is stopped, the discharge port can be blocked to maintain the state of blocking the barrel and the fractionation barrel from communicating.

[0017] Beneficial effects: Compared with the prior art, the methylvinylcyclosiloxane mixture impurity removal device of the present invention has the following advantages:

[0018] (1) The temperature of steam is used in the fractionation cylinder to vaporize the impurities in the material in the cluster flow tube. The cluster flow tube is in contact with the steam, and has high heat conduction efficiency and a large heat conduction area, which can quickly vaporize the impurities by heat. The bubbles are entrained to the receiving cylinder at the bottom for separation, and the impurity gas is extracted;

[0019] (2) The present invention provides a material barrel that can be hoisted and removed in the material barrel. During the hoisting process, the sealing plate on the side of the material barrel is locked by a latch to maintain a sealed state. After the material barrel is hoisted in place, the locking of the sealing plate can be unlocked, the sealing plate will automatically open, and the material can automatically flow out. After the material barrel is hoisted and removed, the sealing plate can squeeze the latch due to the squeezing effect with the inner wall of the material barrel so that the latch locks the sealing plate again.

[0020] (3) The present invention has a filter screen and a stirring assembly built into the material barrel. The filter screen is intended to perform preliminary filtering of the material to avoid clogging of the subsequent cluster flow pipe. The stirring assembly is intended to stir the material during rotation. At the same time, its scraper can scrape off the flocs attached to the filter screen to ensure the flow rate of the material at the filter screen.

[0021] (4) When the steam flow of the present invention is introduced into the fractionation cylinder, it not only heats the cluster flow tube to vaporize impurities, but also drives the impeller to rotate, thereby driving the stirring assembly to rotate. There is no need to separately set up a power device to drive the stirring assembly to rotate.

[0022] (5) The present invention also provides a diverter tube at the top of the cluster flow tube, and a transfer trough on the diverter tube. The transfer trough allows the material to spread from the bottom wall, and then the material is dispersed and falls on the diverter tube below, so that the diverter tube has a stable liquid height of material, thereby ensuring that the material flow rate and flow rate entering each flow tube are close. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : A schematic diagram of the structure of the present invention;

[0024] Figure 2 : Schematic diagram of the internal structure of the present invention;

[0025] Figure 3 : Schematic diagram of the structure of the impeller at the top of the fractionation cylinder;

[0026] Figure 4 : Schematic diagram of the structure of the transfer tank;

[0027] Figure 5 : Figure 2 Enlarged schematic diagram of the mechanism at point A in

[0028] In the figure: material receiving cylinder 1, fractionation cylinder 2, material cylinder 3, discharge port 301, beam flow tube 4, inlet flow tube 5, outlet flow tube 6, sub-material receiving cylinder 7, gas outlet pipe 8, connecting pipe 9, shunt cylinder 10, material bucket 11, outlet flow hole 111, sealing plate 12, support ear 13, slip ring 14, plug pin 15, pin ring 16, spring 17, bearing platform 18, inclined plane 181, card slot 182, lifting arm 19, clamping part 20, grip ring 21, filter screen 22, stirring shaft 23, connecting rod 24, scraper 25, impeller 26, support 27, load-bearing slide rail 28, transfer tank 29, docking seat 30, cover 31. Detailed implementation manner

[0029] Next, in combination with the attached Figures 1 - 5 A specific embodiment of the present invention will be elaborated in detail.

[0030] Referring to the attached Figure 1 and Figure 2 , a device for removing impurities from a methyl vinyl cyclosiloxane mixture includes a material receiving cylinder 1, a fractionation cylinder 2 is connected above the material receiving cylinder 1, a material cylinder 3 is connected upward to the fractionation cylinder 2, the material to be fractionated and purified enters the device from the material cylinder 3, a beam flow tube 4 is arranged inside the fractionation cylinder 2, the beam flow tube 4 is composed of multiple parallel flow tubes, the beam flow tube 4 communicates with the material cylinder 3 at the top, and penetrates through the bottom wall of the fractionation cylinder at the bottom and enters the material receiving cylinder 1, an inlet flow tube 5 is connected to the upper part of the fractionation cylinder 2, and an outlet flow tube 6 is connected to the bottom.

[0031] Methyl vinyl cyclosiloxane is a colorless transparent liquid or a low-viscosity oily substance. The material in the material cylinder will flow into the beam flow tube 4 by gravity and gradually flow downward; at the same time, high-temperature steam enters the fractionation cylinder 2 through the inlet flow tube 5 to heat the material in the beam flow tube 4. Utilizing the significant difference in boiling points between methyl vinyl cyclosiloxane and impurities, the impurities are vaporized, and the vaporized impurities are carried and washed into the lower material receiving cylinder 1 in the form of bubbles, and the bubbles float upward and separate from the material in the material receiving cylinder.

[0032] The material receiving cylinder 1 includes a plurality of connected sub-material receiving cylinders 7. An air outlet pipe 8 is connected to one of the sub-material receiving cylinders 7. The connected sub-material receiving cylinders 7 are intended to increase the storage volume of the logistics, and at the same time provide sufficient static time so that the impurity gas entrained in the logistics can float and escape, and escape from the air outlet pipe 8 at the top. The sub-material receiving cylinders 7 are connected by at least two groups of connecting pipes 9 with different heights. The connecting pipes at the lower position are intended to enable the material to flow in each sub-material receiving cylinder 7, and the materials in each sub-material receiving cylinder 7 are at the same height due to the principle of communicating vessels. The connecting pipes at the higher position are intended to enable the impurity gas escaping from each sub-material receiving cylinder to flow mutually and escape from the air outlet pipe 8 together.

[0033] The steam enters the fractionating cylinder 2 through the inlet pipe 5. During the heat exchange process with the bundle flow pipe 4, the temperature of the steam decreases, a large amount of liquid water will be formed and finally converge at the bottom of the fractionating cylinder. Both the liquid water and the steam finally flow out from the outlet pipe 6 at the bottom, maintaining the state that the fractionating cylinder is filled with constant-temperature steam.

[0034] Reference appendix Figure 2 and Figure 4 As shown in the reference appendix, a shunt cylinder 10 is connected to the upper part of the bundle flow pipe 4. The shunt cylinder 10 is communicated with each flow pipe of the bundle flow pipe 4. An outlet 301 is provided at the bottom of the material cylinder 3, and the logistics flows into the shunt cylinder 10 through this outlet 301, forming a certain liquid height in the shunt cylinder 10. By controlling the fluctuation range of the logistics liquid level height, the flow rate of the logistics entering the bundle flow pipe 4 is within the target range, and then the over-flow time of the material in the flow pipe is satisfied, ensuring that the impurities are completely removed.

[0035] Reference appendix Figure 5, a removable filter cartridge assembly is disposed inside the barrel 3. The filter cartridge assembly includes a material barrel 11. The barrel contains materials. In this embodiment, the material barrel 11 can be taken out for cleaning, or taken out for the current small-batch logistics filtration operation, or built into the barrel 3 to continuously inject the materials to be filtered into the material barrel, achieving the effect of continuous operation. During this process, it is required to have sealing performance during the hoisting process of the material barrel 11, and it is required that the materials in the material barrel can flow out into the barrel after being placed in the barrel. The following technical solutions are implemented in this embodiment: an outflow hole 111 is provided on the side wall of the material barrel 11 along the axial direction of the material barrel. A sealing plate 12 is rotatably connected to the outer wall of the material barrel 11. When the sealing plate 12 rotates to fit on the outer wall of the material barrel, it can completely cover the outflow hole on the material barrel, achieving a closed effect; a plurality of groups of ear sets are provided on the circumference of the top of the material barrel 11. Each ear set includes two adjacent ears 13. The ear sets are connected by a sliding ring 14. A bolt 15 is fixedly connected to the sliding ring 14. The top of the sealing plate 12 is connected with a pin ring 16. The sliding ring 14 can rotate on the ear 13, driving the bolt 15 to rotate. When the sealing plate 12 fits on the outer wall of the material barrel, the bolt 15 can rotate and insert into the pin ring 16 to lock the pin ring 16; a spring 17 sleeved on the sliding ring 14 is further provided between the two ears 13 of the ear set. Both ends of the spring 17 are in contact with the bolt 15 and one of the ears of the ear set respectively.

[0036] The bolt 15 is tightly pressed against the ear under the elastic force of the spring 17. When hoisting the material barrel 11, the material barrel 11 is in a closed state. The bolt 15 is in a state of being inserted into the pin ring 16, and the cooperation state of the bolt 15 and the pin ring 16 is maintained under the action of the spring 17. After hoisting in place, rotate the sliding ring 14 to disengage the bolt 15 from the pin ring 16. The sealing plate 12 rotates under the pushing force of the side pressure of the internal materials and abuts against the inner wall of the barrel 3 and remains stationary. At this time, the inner cavity of the material barrel 11 is communicated with the barrel 3 through the outflow hole 111, and the materials in the material barrel enter the barrel 3 through the outflow hole.

[0037] The pin shaft where the bolt 15 and the pin ring 16 are engaged is provided with an inclined surface. A radially protruding bearing platform 18 is provided on the inner wall of the barrel 3. The bottom of the bearing platform 18 is also provided with an inclined surface 181. When it is necessary to hoist and take out the material barrel 11, the sealing plate 12 is in an unfolded state. During the initial small section of height when the material barrel is lifted, the pin ring 16 at the top of the sealing plate 12 abuts against the inner wall of the barrel 3 and moves upward until it contacts the inclined surface 181 at the bottom of the bearing platform 18, and then gradually closes under the limitation of the inclined surface 181. At the end of the closing, the pin ring 16 presses the inclined surface of the bolt 15, causing the bolt 15 to retreat a small distance. The spring 17 contracts, and the bolt 15 and the ear are separated from contact. When the pin ring 16 disengages from the inclined surface 181, the sealing plate 12 fits on the outer wall of the material barrel 11, the bolt 15 and the pin ring 16 coincide, and coincide and insert into the pin ring 16 under the action of the spring 17 to complete the re-locking of the sealing plate 12 and maintain the sealing performance of the material barrel.

[0038] A lifting arm 19 is connected to the top plate of the material barrel 11 for lifting the material barrel. A clamping member 20 is connected to the lifting arm 19. Correspondingly, a clamping groove 182 is provided on the bearing platform 18. When lifting and placing the material barrel into the material cylinder, it is only necessary to align the clamping member 20 with the clamping groove 182 and lower it, so that the clamping member 20 is fitted at the clamping groove 182 to complete the load positioning of the material barrel.

[0039] A holding ring 21 is connected to the slip ring 14. The holding ring 14 is intended to be a holding component for an operator to rotate the slip ring 14 and slide on the support 13.

[0040] A filter screen 22 is provided inside the material barrel 11. In the preparation process of methyl vinyl cyclosiloxane, there are suspended process residues that are not completely removed. For example, if acidic or alkaline catalysts are not completely neutralized or washed, they will react with siloxane or other substances in the environment to form salt precipitates, forming solid particles; and if hydrolysis is incomplete, the residual methyl vinyl dichlorosilane may absorb moisture to form silanol, which further condenses into oligomers or crosslinked substances, forming insoluble solids. If the suspended residues enter the beam flow tube 4, they will block the flow tube, especially at the tube orifice. The presence of the filter screen 22 intercepts the residues inside the material barrel 11.

[0041] The material barrel 11 is also internally provided with a stirring assembly, including a stirring shaft 23 and a connecting rod 24 connected to the stirring shaft 23. A scraping plate 25 is connected to the connecting rod 24. The outer edge of the scraping plate 25 contacts the filter screen 22. The stirring shaft 23 is controlled to rotate, driving the scraping plate 25 to rotate. During the rotation process, the scraping plate sweeps across the inner wall of the filter screen 22, scraping off the residues intercepted and attached to the inner wall of the filter screen, avoiding blocking the filter screen and reducing the material flow rate. At the same time, the rotation of the stirring shaft drives the scraping plate to stir the material, and the material has a centrifugal force and moves towards the filter screen, accelerating the material outflow rate.

[0042] Refer to the appendix Figures 3 - 5 , an impeller 26 is internally provided at the top of the fractionating cylinder 2. Support brackets 27 are connected to the upper and lower ends of the impeller 26. A load-bearing slide rail 28 is connected to the inner wall of the fractionating cylinder 2. The support brackets 27 are slidably fitted on the load-bearing slide rail 28. The inlet flow pipe 5 is directly opposite to the blades of the impeller 26. A transfer groove 29 is connected to the support brackets 27 through a support arm 28. A docking seat 30 is connected to the middle of the transfer groove 29. A leakage port is provided at the bottom of the transfer groove 29. The bottom end of the stirring shaft 23 passes through the material cylinder 3 and is connected to the docking seat 30. When steam enters the fractionating cylinder from the inlet flow pipe 5, the steam power causes the impeller 26 to rotate, and the rotating impeller drives the stirring shaft 23 to rotate. That is, the power for the rotation of the stirring shaft 23 comes from the steam, and no additional power device needs to be set up.

[0043] The existence of the transfer tank 29 is for two purposes. On the one hand, it transfers the rotational power of the impeller to the stirring assembly. On the other hand, it temporarily stores the material during the intermediate process of material flow and enables the material to flow smoothly downward to the lower diversion cylinder 10. Since methylvinyldichlorosilane is viscous, when it flows downward, it will spread around along the leak opening in the middle of the outer wall of the bottom of the transfer tank 29 and finally disperse and fall on the diversion cylinder 10, avoiding direct point impact on the diversion cylinder 10 and making the liquid level in the diversion cylinder 10 relatively stable. On the other hand, a cover 31 is connected to the transfer tank 29. During the rotation of the transfer tank 29, the cover will intermittently block the discharge port 301 of the material cylinder 3. When the machine stops, it can be in the state of blocking the discharge port 301 to maintain the blocked and disconnected state between the material cylinder and the fractionating cylinder.

[0044] In the methylvinylcyclosiloxane mixture purification device of the present invention, the impurities in the material in the beam flow tube are vaporized by the temperature of the steam in the fractionating cylinder. The beam flow tube is in contact with the steam, with high heat conduction efficiency and large heat conduction area, which can quickly heat the impurities to vaporize, and the bubbles are carried to the bottom receiving cylinder for separation, and the impurity gas is evacuated. In the present invention, a material bucket that can be hoisted and taken out is arranged in the material cylinder. During the hoisting process, the sealing plate on the side of the material bucket is locked by a bolt to maintain the sealed state. After hoisting in place, the locking of the sealing plate can be unlocked, and the sealing plate will automatically open, and the material can flow out automatically. After being hoisted and taken out, under the extrusion of the inner wall of the material cylinder, the sealing plate can extrude the bolt to make the bolt lock the sealing plate again. In the present invention, a filter screen and a stirring assembly are arranged in the material bucket. The filter screen is used to preliminarily filter the material to avoid blocking the subsequent beam flow tube. The stirring assembly is used to stir the material during rotation, and at the same time, its scraper can scrape off the flocs attached to the filter screen to ensure the flow rate of the material passing through the filter screen. The steam flow of the present invention, when introduced into the fractionating cylinder, not only heats the beam flow tube to vaporize the impurities, but also drives the impeller to rotate and drives the stirring assembly to rotate, without the need to separately set a power device for driving the stirring assembly to rotate. The present invention also has a diversion cylinder at the top of the beam flow tube and a transfer tank on the diversion cylinder. The transfer tank spreads and diffuses the material from the bottom wall, and then the material will disperse and fall on the lower diversion cylinder, so that the material in the diversion cylinder has a stable liquid level, thereby ensuring that the material flow rate and velocity entering each flow tube are close.

[0045] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A methylvinylcyclosiloxane mixture impurity removal device, comprising a receiving cylinder (1), a fractionation cylinder (2) connected above the receiving cylinder (1), and a material cylinder (3) connected upwardly to the fractionation cylinder (2), characterized in that: The fractionating cylinder (2) has a built-in cluster flow tube (4), which is connected to the material cylinder (3) at the top and penetrates through the bottom wall of the fractionating cylinder to enter the material collecting cylinder (1). The top of the fractionating cylinder (2) is connected to the inlet flow tube (5) and the bottom is connected to the outlet flow tube (6).

2. The methylvinylcyclosiloxane mixture impurity removal device according to claim 1, characterized in that: The material collecting cylinder (1) comprises a plurality of connected sub-material collecting cylinders (7), one of which is connected to an air outlet pipe (8), and the sub-material collecting cylinders (7) are connected to each other via at least two groups of connecting pipes (9) of different heights.

3. The methylvinylcyclosiloxane mixture impurity removal device according to claim 2, characterized in that: The upper part of the cluster flow tube (4) is connected to a flow distribution tube (10), the flow distribution tube (10) is in communication with each flow tube of the cluster flow tube (4), and the bottom of the barrel (3) is provided with a discharge port (301).

4. The methylvinylcyclosiloxane mixture impurity removal device according to claim 3, characterized in that: The barrel (3) has a filter cartridge assembly built therein, the filter cartridge assembly comprising a barrel (11), a side wall of the barrel (11) being provided with an outflow hole (111) arranged along the axial direction of the barrel, and an outer wall of the barrel (11) being rotatably connected to a sealing plate (12); a plurality of groups of lug groups are arranged on the circumference of the top of the barrel (11), the lug groups comprising two adjacent lugs (13), the lug groups being connected via a slip ring (14), a latch pin (15) being fixedly connected to the slip ring (14), a pin ring (16) being connected to the top of the sealing plate (12), a spring (17) sleeved on the slip ring (14) being arranged between the two lugs (13) of the lug group, the two ends of the spring (17) respectively contacting the latch pin (15) and one of the lugs of the lug group.

5. The methylvinylcyclosiloxane mixture impurity removal device according to claim 4, characterized in that: The pin shaft of the latch pin (15) and the pin ring (16) is provided with an inclined surface, the inner wall of the barrel (3) is provided with a radially protruding support platform (18), and the bottom of the support platform (18) is also provided with an inclined surface (181).

6. The methylvinylcyclosiloxane mixture impurity removal device according to claim 5, characterized in that: The top plate of the barrel (11) is connected to a suspension arm (19), a clamping piece (20) is connected to the suspension arm (19), a clamping groove (182) is provided on the support platform (18), and the clamping piece (20) cooperates with the clamping groove (182); and a gripping ring (21) is connected to the slip ring (14).

7. The methylvinylcyclosiloxane mixture impurity removal device according to claim 5, characterized in that: A filter screen (22) is provided inside the material barrel (11).

8. The methylvinylcyclosiloxane mixture impurity removal device according to claim 7, characterized in that: The material barrel (11) also has a built-in stirring assembly, including a stirring shaft (23) and a connecting rod (24) connected to the stirring shaft (23), a scraper (25) is connected to the connecting rod (24), the outer edge of the scraper (25) is in contact with the filter screen (22), and the stirring shaft (23) rotates in a controlled manner.

9. The methylvinylcyclosiloxane mixture impurity removal device according to claim 8, characterized in that: An impeller (26) is built into the top of the fractionation barrel (2), and brackets (27) are connected to the upper and lower ends of the impeller (26). A load-bearing slide rail (28) is connected to the inner wall of the fractionation barrel (2), and the bracket (27) is slidably fitted on the load-bearing slide rail (28). The inlet pipe (5) is directly opposite to the blades of the impeller (26). A transfer trough (29) is connected to the bracket (27) through a support arm (28), and a docking seat (30) is connected to the middle of the transfer trough (29). A leakage port is provided at the bottom of the transfer trough (29), and the bottom end of the stirring shaft (23) passes through the barrel (3) and is connected to the docking seat (30).

10. The methylvinylcyclosiloxane mixture impurity removal device according to claim 9, characterized in that: The transfer tank (29) is connected to a sealing cover (31).

Images