An apparatus and method for producing an epoxy resin

Abstract

The application discloses an epoxy resin production device and method, and belongs to the technical field of epoxy resin production, which comprises a production container serving as a scrap iron removal reaction container, a magnetic bar capable of adsorbing scrap iron is installed in the production container, and the bottom end of the magnetic bar is fixedly connected with the central bottom surface of the production container. The application can effectively separate and filter the scrap iron in the epoxy resin solution by using one magnetic bar, energy is saved, and the separation efficiency is high. In the process of the floating of a large number of bubbles, the epoxy resin solution can be driven to flow, compared with the mode of stirring the epoxy resin flow by using a stirring rod, energy consumption is further saved, and noise is lower. In the production process, the bubbles discharged from the first air hole are used to continuously discharge the epoxy resin without scrap iron at the bottom through the discharge port, and the epoxy resin containing scrap iron is continuously added at a stable flow rate from the feeding port, so that the scrap iron removal efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of epoxy resin production technology, specifically to an epoxy resin production apparatus and method. Background Technology

[0002] Existing technologies for separating iron filings from epoxy resin solutions employ magnetic rods to attract and trap the iron filings. However, these methods are inefficient, and some iron filings easily slip through the trap during the adsorption and trapping process. Utility model patent CN218282124U discloses an epoxy resin filtration device that uses multiple movable electromagnetic rods for easy removal and installation, facilitating the cleaning of iron filings adhering to the rods. However, the iron filings attracted by the magnetic rods require periodic cleaning. Removing the magnetic rods from the reaction vessel and cleaning the iron filings is a complex process, and using multiple magnetic rods to adsorb the iron filings is energy-intensive. Utility model patent CN215313109U, "Epoxy Resin Filtration Device in Epoxy Resin Production," discloses a technical solution where the epoxy resin solution flows through a first filtration channel and a second filtration channel, increasing the contact time and area between the fluid and the magnet, allowing for two iron filings cleaning processes and improving the cleaning effect. However, iron filings are separated by interception, but the intercepted iron filings are difficult to clean efficiently and regularly, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an epoxy resin production apparatus and method to solve the problem of low efficiency in cleaning iron filings from epoxy resin solutions in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An epoxy resin production apparatus includes a production container serving as a reaction vessel for removing iron filings. Inside the production container is a magnetic rod capable of adsorbing iron filings, the bottom end of which is fixedly connected to the center of the bottom surface of the production container. The apparatus also includes a feed inlet, a vent, and a discharge outlet. The feed inlet and vent are located at the top of the production container. The lower part of the side wall of the production container is funnel-shaped, and a discharge outlet is located at the bottom end of the side wall. A bottom surface coil is fixedly installed on the bottom surface of the production container, and a first air hole is formed on the side wall of the bottom surface coil. A gas supply pipe is fixedly installed at the bottom of the production container, and the gas supply pipe is interconnected with the bottom surface coil. The end of the gas supply pipe away from the bottom surface coil is connected to an external gas supply device via an external pipe fitting. The external gas supply device provides gas, which flows through the coil. After the gas supply pipe enters the bottom coil, the gas is discharged from the first vent, generating dense bubbles. These bubbles rise, adsorbing and carrying iron filings from the epoxy resin liquid. Iron filings that are not adsorbed by the magnetic rod due to their distance are carried back to the upper part of the magnetic rod by the bubbles and then adsorbed by the magnetic rod. This ensures that the epoxy resin inside the production container maintains a state where the upper part has a high iron filings content, the lower part has a low iron filings content, and there are no iron filings remaining at the bottom. The epoxy resin without iron filings remaining at the bottom can be directly discharged through the discharge port, completing the iron filings removal process. This device can continuously discharge epoxy resin without iron filings remaining at the discharge port while continuously adding epoxy resin containing iron filings at a stable flow rate from the inlet, resulting in high production efficiency.

[0006] Preferably, the gas is nitrogen.

[0007] A side coil is fixedly installed on the lower part of the inner side wall of the production container. A second air hole is opened on the side wall of the side coil. The opening of the second air hole faces the middle of the side wall of the magnetic rod. The side coil is connected to the air supply pipe. The air bubbles discharged from the second air hole can float in the epoxy resin and have an oblique movement trajectory towards the side wall of the magnetic rod, so that the iron filings can easily approach the magnetic rod and be efficiently adsorbed.

[0008] It also includes an iron filings collection assembly capable of scraping and collecting iron filings adsorbed on a magnetic rod. The iron filings collection assembly is slidably sleeved on the magnetic rod. The assembly includes a telescopic mesh cylinder, an upper sliding sleeve, a first annular corrugated sealing plate, a lower sliding sleeve, a second annular corrugated sealing plate, and a first traction rope. The upper and lower sliding sleeves are slidably mounted on the side wall of the magnetic rod, with the upper sliding sleeve positioned above the lower sliding sleeve. A first annular corrugated sealing plate is fixedly mounted on the outer wall of the upper sliding sleeve, and a first annular corrugated sealing plate is fixedly mounted on the outer wall of the lower sliding sleeve. The outer ring side walls of the two first annular corrugated sealing plates are connected and fixedly secured with the same... A telescopic mesh cylinder is used. The first annular corrugated sealing plate is elastic, which can prevent the change in cylinder diameter during the telescopic mesh cylinder from tearing the first annular corrugated sealing plate. After production, the upper and lower sliding sleeves slide upwards. The lower sliding sleeve scrapes and gathers the iron filings on the surface of the magnetic rod. At the same time, the telescopic mesh cylinder slowly contracts. After the telescopic mesh cylinder contracts to its limit, the mesh of the telescopic mesh cylinder is closed. All the iron filings adsorbed by the magnetic rod are gathered inside the iron filings collection component. The entire iron filings collection component is slid upwards and detached from the top of the magnetic rod, thereby cleaning the iron filings inside the iron filings collection component. It is then re-sleeved onto the surface of the magnetic rod for use in the next production. The iron filings discharge efficiency after production is high and the discharge is thorough.

[0009] Preferably, the second annular corrugated sealing sheet is a rubber-made second annular corrugated sealing sheet.

[0010] Preferably, the telescopic mesh cylinder is formed by a metal mesh consisting of movable strips and a rotating shaft, with the ends of the mesh surrounding the cylinder.

[0011] It also includes a first traction rope. A rope hole is vertically opened on the upper sliding sleeve. One end of the first traction rope passes through the rope hole and is connected and fixed to the top surface of the lower sliding sleeve. The end of the first traction rope away from the lower sliding sleeve extends to the outside of the top of the production container. After production is completed, the first traction rope is pulled directly to retract the entire iron filings collection assembly and finally pull it to the outside of the production container, which reduces the difficulty of operation and allows the iron filings collection assembly to be removed even when production has not stopped.

[0012] It also includes a second traction rope, which is fixedly connected to the top surface of the upper sliding sleeve. The end of the second traction rope away from the upper sliding sleeve extends to the outside of the top of the production container. Several iron filings collection components in a compressed state are sleeved on the bottom of the side wall of the magnetic rod. Pulling the second traction rope on the topmost iron filings collection component can stretch the entire iron filings collection component, opening the mesh of the telescopic mesh cylinder, and allowing the iron filings in the epoxy resin to be successfully adsorbed onto the magnetic rod. When a large amount of iron filings accumulate on the magnetic rod, pulling the first traction rope pulls the topmost iron filings collection component to the outside. Then, pulling the second traction rope on the second iron filings collection component, and so on, can extend the continuous production time of this device and effectively improve production efficiency.

[0013] The production method of an epoxy resin production apparatus includes the following steps.

[0014] Step 1, preliminary adsorption of iron filings: An epoxy resin solution containing iron filings is added into the production container through the feed inlet. The iron filings in the epoxy resin solution are adsorbed by the side wall of the magnetic rod, thus removing iron filings and impurities from the epoxy resin solution.

[0015] Step 2, secondary adsorption via reflux: Gas is supplied by an external gas supply device. After flowing through the gas supply pipe, the gas enters the bottom coil and then exits from the first gas hole, generating dense bubbles. The bubbles rise and adsorb and carry the iron filings in the epoxy resin liquid to the surface. Iron filings that are not adsorbed by the magnetic rod are carried back to the area near the upper part of the magnetic rod by the bubbles and then adsorbed by the magnetic rod. This ensures that the epoxy resin solution inside the production container can continuously maintain a state where the iron filings content is high in the upper part, low in the lower part, and no iron filings remain at the bottom.

[0016] Step 3, discharge of impurity-free epoxy resin: The epoxy resin at the bottom of the production container, free of iron filings, is discharged and collected directly through the discharge port, thus completing the removal of iron filings from the epoxy resin.

[0017] Step 4, Iron Scrap Removal: Slide the lower sliding sleeve upwards. The lower sliding sleeve scrapes and gathers the iron scraps on the surface of the magnetic rod. At the same time, the telescopic mesh cylinder slowly retracts. After the telescopic mesh cylinder retracts to its limit, the mesh of the telescopic mesh cylinder is closed. All the iron scraps adsorbed by the magnetic rod are gathered inside the iron scrap collection component. Slide the entire iron scrap collection component upwards to detach it from the top of the magnetic rod, and then clean the iron scraps inside the iron scrap collection component. Then, re-sleeve it onto the surface of the magnetic rod for the next production.

[0018] In step one, the epoxy resin solution containing iron filings is added to the production container through the feed inlet in a stable and continuous manner, which keeps the device running continuously and ensures high production efficiency.

[0019] In step two, gas is supplied by an external gas supply device. After flowing through the gas supply pipe, the gas enters the bottom coil and the side coil. The gas in the side coil is discharged from the second air hole, generating bubbles. The bubbles discharged from the second air hole can float in the epoxy resin and have an oblique movement trajectory towards the side wall of the magnetic rod, so that the iron filings can easily approach the magnetic rod and be efficiently adsorbed.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention utilizes a magnetic rod to effectively separate and filter iron filings in an epoxy resin solution, saving energy and achieving high separation efficiency. Furthermore, the process of a large number of bubbles rising in this invention can drive the flow of the epoxy resin solution, which is more energy-efficient and quieter than using a stirring rod to agitate the epoxy resin.

[0022] During the production process, this device utilizes the air bubbles discharged from the first vent to maintain the epoxy resin inside the production container in a state where the upper part has a high iron filings content, the lower part has a low iron filings content, and there are no iron filings residues at the bottom. This allows the epoxy resin with no iron filings residues at the bottom to be continuously discharged through the discharge port, while epoxy resin containing iron filings is continuously added from the feed port at a stable flow rate, resulting in high iron filings removal efficiency.

[0023] This device utilizes air bubbles discharged from the second vent. These air bubbles can float in the epoxy resin and have an oblique movement trajectory towards the side wall of the magnetic rod, making it easy for iron filings to approach the magnetic rod and be efficiently adsorbed, thereby further improving production efficiency.

[0024] The iron filings collection component in this device can collect and discharge the iron filings adsorbed by the magnetic rod, ensuring the high adsorption efficiency of the magnetic rod for iron filings in the epoxy resin solution. During or after production, the entire iron filings collection component can be slid upwards to detach from the top of the magnetic rod, thereby cleaning the iron filings inside the iron filings collection component. It can also quickly connect a new iron filings collection component to cover the side wall of the magnetic rod, enabling the device to operate efficiently for a long time without stopping. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the epoxy resin production apparatus of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the epoxy resin production apparatus of the present invention;

[0027] Figure 3 This is a schematic diagram of the front cross-sectional structure of the epoxy resin production apparatus of the present invention.

[0028] Figure 4 This is a schematic diagram of the iron filings collection component of the epoxy resin production apparatus of the present invention under tensile conditions.

[0029] Figure 5 This is a schematic diagram of the iron filings collection component of the epoxy resin production apparatus of the present invention in its contracted state.

[0030] Figure 6 This is a schematic diagram showing the disassembled structure of the iron filings collection component in the epoxy resin production apparatus of the present invention.

[0031] Labels in the diagram: 101, Production container; 102, Feed inlet; 103, Vent; 104, Discharge outlet; 200, Air bubble; 201, Magnetic rod; 202, Bottom coil; 203, First vent; 204, Side coil; 205, Second vent; 206, Air supply pipe; 300, Iron filings collection assembly; 301, Telescopic mesh cylinder; 302, Upper sliding sleeve; 303, First annular corrugated sealing plate; 304, Lower sliding sleeve; 305, Second annular corrugated sealing plate; 306, First traction rope; 307, Second traction rope. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example: Figure 1-6 As shown, the epoxy resin production apparatus includes a production container 101 serving as a reaction vessel for removing iron filings. A magnetic rod 201 capable of adsorbing iron filings is installed inside the production container 101. The bottom end of the magnetic rod 201 is fixedly connected to the center of the bottom surface of the production container 101. The apparatus also includes a feed inlet 102, a vent 103, and a discharge outlet 104. The feed inlet 102 and vent 103 are located at the top of the production container 101. The lower part of the side wall of the production container 101 is funnel-shaped, and the discharge outlet 104 is located at the bottom end of the side wall. A bottom surface coil 202 is fixedly installed on the bottom surface of the production container 101. A first air hole 203 is opened on the side wall of the bottom surface coil 202. An air supply pipe 206 is fixedly installed at the bottom of the production container 101, and the air supply pipe 206 is interconnected with the bottom surface coil 202. The end of the air supply pipe 206 away from the bottom surface coil 202 is connected to an external air supply device via an external pipe fitting. The gas supply equipment provides gas, which flows through the gas supply pipe 206 and enters the bottom coil 202. The gas is then discharged from the first gas hole 203, generating dense bubbles. The bubbles rise, adsorbing and carrying iron filings in the epoxy resin liquid. Because they are far from the magnetic rod 201, the iron filings that are not adsorbed by the magnetic rod 201 are carried back to the upper area near the magnetic rod 201 by the bubbles and then adsorbed by the magnetic rod 201. This ensures that the epoxy resin inside the production container 101 can continuously maintain a state where the upper part has a high iron filings content, the lower part has a low iron filings content, and there are no iron filings residues at the bottom. The epoxy resin without iron filings residues at the bottom can be directly discharged through the discharge port 104, completing the iron filings removal process. This device can continuously discharge epoxy resin without iron filings residues at the discharge port 104 while continuously adding epoxy resin containing iron filings at a stable flow rate from the feed port 102, resulting in high production efficiency.

[0034] A side coil 204 is fixedly installed on the lower part of the inner wall of the production container 101. A second air hole 205 is opened on the side wall of the side coil 204. The opening of the second air hole 205 faces the middle of the side wall of the magnetic rod 201. The side coil 204 is connected to the air supply pipe 206. The air bubbles discharged from the second air hole 205 can float in the epoxy resin and have an oblique movement trajectory towards the side wall of the magnetic rod 201, so that the iron filings can easily approach the magnetic rod 201 and be efficiently adsorbed.

[0035] It also includes an iron filings collection component 300 capable of scraping and collecting iron filings adsorbed on the magnetic rod 201. The iron filings collection component 300 is slidably sleeved on the magnetic rod 201. The iron filings collection component 300 includes a telescopic mesh cylinder 301, an upper sliding sleeve 302, a first annular corrugated sealing plate 303, a lower sliding sleeve 304, a second annular corrugated sealing plate 305, and a first traction rope 306. The upper sliding sleeve 302 and the lower sliding sleeve 304 are slidably installed on the side wall of the magnetic rod 201. The upper sliding sleeve 302 is located above the lower sliding sleeve 304. The first annular corrugated sealing plate 303 is sleeved and fixedly installed on the outer side wall of the upper sliding sleeve 302. The first annular corrugated sealing plate 303 is fixedly installed on the outer side wall of the lower sliding sleeve 304. The outer ring side walls of the two first annular corrugated sealing plates 303 are connected and fixedly fixed. The same telescopic mesh cylinder 301 has an elastic first annular corrugated sealing plate 303, which can prevent the change in cylinder diameter during the telescopic mesh cylinder 301 from tearing the first annular corrugated sealing plate 303. After production, the sliding sleeve 304 slides upward and downward. The sliding sleeve 304 scrapes and gathers the iron filings on the surface of the magnetic rod 201. At the same time, the telescopic mesh cylinder 301 slowly contracts. After the telescopic mesh cylinder 301 contracts to its limit, the mesh of the telescopic mesh cylinder 301 is closed. All the iron filings adsorbed by the magnetic rod 201 are gathered inside the iron filings collection component 300. The entire iron filings collection component 300 is slid upward and detached from the top of the magnetic rod 201, thereby cleaning the iron filings inside the iron filings collection component 300. It is then re-sleeved onto the surface of the magnetic rod 201 for use in the next production. The iron filings discharge efficiency after production is high and the discharge is thorough.

[0036] Preferably, the telescopic mesh cylinder 301 is formed by a metal mesh consisting of movable strips and a rotating shaft, with the ends of the mesh surrounding the cylinder.

[0037] It also includes a first traction rope 306. A rope hole is vertically opened on the upper sliding sleeve 302. One end of the first traction rope 306 passes through the rope hole and is connected and fixed to the top surface of the lower sliding sleeve 304. The end of the first traction rope 306 away from the lower sliding sleeve 304 extends to the outside of the top of the production container 101. After production is completed, the first traction rope 306 is pulled directly to retract the entire iron filings collection component 300 and finally be pulled to the outside of the production container 101, which reduces the difficulty of operation and allows the iron filings collection component 300 to be removed even when production has not stopped.

[0038] It also includes a second traction rope 307, which is fixedly connected to the top surface of the upper sliding sleeve 302. The end of the second traction rope 307 away from the upper sliding sleeve 302 extends to the outside of the top of the production container 101. Several iron filings collection components 300 in a compressed state are sleeved on the bottom of the side wall of the magnetic rod 201. Pulling the second traction rope 307 on the topmost iron filings collection component 300 can stretch the iron filings collection component 300 as a whole, opening the mesh of the telescopic mesh cylinder 301, and the iron filings in the epoxy resin can be smoothly attracted to the magnetic rod 201. When a large amount of iron filings accumulate on the magnetic rod 201, the first traction rope 306 is pulled to pull the topmost iron filings collection component 300 to the outside. Then the second traction rope 307 on the second iron filings collection component 300 is pulled, and so on. This operation can extend the continuous production time of the device and effectively improve production efficiency.

[0039] The production method of an epoxy resin production apparatus includes the following steps.

[0040] Step 1, preliminary adsorption of iron filings: An epoxy resin solution containing iron filings is added into the production container 101 through the feed inlet 102. The iron filings in the epoxy resin solution are adsorbed by the side wall of the magnetic rod 201, thereby removing iron filings and impurities from the epoxy resin solution.

[0041] Step 2, secondary adsorption via reflux: Gas is supplied by an external gas supply device. After flowing through the gas supply pipe 206, the gas enters the bottom coil 202 and is then discharged from the first gas hole 203, generating dense bubbles. The bubbles rise and adsorb and carry the iron filings in the epoxy resin liquid to the surface. Iron filings that are not adsorbed by the magnetic rod 201 are carried back to the upper area near the magnetic rod 201 by the bubbles and then adsorbed by the magnetic rod 201. This ensures that the epoxy resin solution inside the production container 101 can continuously maintain a state where the iron filings content is high in the upper half, low in the lower half, and no iron filings remain at the bottom.

[0042] Step 3, discharge of impurity-free epoxy resin: The epoxy resin at the bottom of the production container 101 without iron filings is discharged and collected directly through the discharge port 104, and the removal of iron filings from the epoxy resin is completed.

[0043] Step 4, Iron shavings removal: Slide the lower sliding sleeve 304 upwards. The lower sliding sleeve 304 scrapes and gathers the iron shavings on the surface of the magnetic rod 201. At the same time, the telescopic mesh cylinder 301 slowly retracts. After the telescopic mesh cylinder 301 retracts to its limit, the mesh of the telescopic mesh cylinder 301 is closed. All the iron shavings adsorbed by the magnetic rod 201 are gathered inside the iron shavings collection component 300. Slide the entire iron shavings collection component 300 upwards to detach it from the top of the magnetic rod 201, thereby cleaning the iron shavings inside the iron shavings collection component 300. Then, re-sleeve it onto the surface of the magnetic rod 201 for the next production use.

[0044] In step one, the epoxy resin solution containing iron filings is added to the production container 101 through the feed inlet 102 in a continuous manner at a stable flow rate, so that the device can run continuously and the production efficiency is high.

[0045] In step two, gas is supplied by an external gas supply device. After flowing through the gas supply pipe 206, the gas enters the bottom coil 202 and the side coil 204. The gas in the side coil 204 is discharged from the second air hole 205, generating bubbles. The bubbles discharged from the second air hole 205 can float in the epoxy resin and have an oblique movement trajectory towards the side wall of the magnetic rod 201, so that the iron filings can easily approach the magnetic rod 201 and be efficiently adsorbed.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An epoxy resin production apparatus comprising a production vessel (101) as a reaction vessel for removing iron chips, a magnetic bar (201) capable of adsorbing iron chips being installed inside the production vessel (101), characterized in that: The bottom end of the magnetic bar (201) is connected and fixed with the bottom center of the production container (101), and further comprises a feeding port (102), a ventilation port (103) and a discharge port (104). The production container (101) is provided with the feeding port (102) and the ventilation port (103) at the top end. The lower part of the side wall of the production container (101) is funnel-shaped. The discharge port (104) is arranged at the bottom end of the side wall of the production container (101). The bottom surface of the production container (101) is fixedly provided with a bottom surface coil pipe (202). The side wall of the bottom surface coil pipe (202) is provided with a first air hole (203). The bottom of the production container (101) is fixedly provided with a gas supply pipe (206). The gas supply pipe (206) is in communication with the bottom surface coil pipe (202). The end of the gas supply pipe (206) away from the bottom surface coil pipe (202) is connected with an external gas supply device through an external pipe. The external gas supply device provides gas. The gas flows through the gas supply pipe (206) and then enters the bottom surface coil pipe (202). Then the gas is discharged from the first air hole (203) to generate bubbles. Further comprising a scrap iron collecting assembly (300) capable of scraping and collecting the scrap iron adsorbed on the magnetic bar (201). The scrap iron collecting assembly (300) is slidably sleeved on the magnetic bar (201). The scrap iron collecting assembly (300) comprises a telescopic mesh cylinder (301), an upper sliding sleeve (302), a first annular corrugated sealing piece (303), a lower sliding sleeve (304), a second annular corrugated sealing piece (305) and a first traction rope (306). The upper sliding sleeve (302) and the lower sliding sleeve (304) are slidably installed on the side wall of the magnetic bar (201). The upper sliding sleeve (302) is located above the lower sliding sleeve (304). The first annular corrugated sealing piece (303) is fixedly sleeved and installed on the outer side wall of the upper sliding sleeve (302). The first annular corrugated sealing piece (303) is fixedly installed on the outer side wall of the lower sliding sleeve (304). The outer circumferential side walls of the two first annular corrugated sealing pieces (303) are connected and fixed with the same telescopic mesh cylinder (301). The first annular corrugated sealing piece (303) has elasticity.

2. The apparatus for producing an epoxy resin according to claim 1, wherein: The side surface coil pipe (204) is fixedly installed on the inner side wall of the production container (101). The second air hole (205) is formed in the side wall of the side surface coil pipe (204). The second air hole (205) is open towards the middle part of the side wall of the magnetic bar (201). The side surface coil pipe (204) is in communication with the gas supply pipe (206).

3. The apparatus for producing an epoxy resin according to claim 1, wherein: Further comprising a first traction rope (306). A rope hole is vertically formed in the upper sliding sleeve (302). One end of the first traction rope (306) penetrates through the rope hole and is connected and fixed with the top surface of the lower sliding sleeve (304). The end of the first traction rope (306) away from the lower sliding sleeve (304) extends to the outside of the top end of the production container (101).

4. The apparatus for producing an epoxy resin according to claim 3, wherein: Also include a second traction rope (307), the upper sliding sleeve (302) top surface is fixedly connected with the second traction rope (307), the second traction rope (307) away from the upper sliding sleeve (302) one end extends to the production container (101) top end outside, the magnetic bar (201) side wall bottom is provided with a plurality of scrap iron collection components (300) in the compressed state, pulling the second traction rope (307) on the topmost scrap iron collection component (300), the scrap iron collection component (300) can be stretched as a whole, the stretchy mesh cylinder (301) mesh opens, the scrap iron in the epoxy resin can be smoothly adsorbed to the magnetic bar (201).

5. The production method of an epoxy resin production apparatus according to claim 4, characterized by: It comprises the following steps, Step one, scrap iron preliminary adsorption: through the feed inlet (102) to the production container (101) into the epoxy resin solution containing scrap iron, the scrap iron in the epoxy resin solution is adsorbed by the side wall of the magnetic bar (201), and the scrap iron impurities in the epoxy resin solution are removed; Step two, secondary adsorption by reflux: use external gas supply equipment to provide gas, the gas flows through the gas supply pipe (206) and then enters the bottom coil (202), and then the gas is discharged from the first gas hole (203) to generate dense bubbles, the bubbles float up, adsorb and carry the scrap iron in the epoxy resin liquid to float up, the scrap iron not adsorbed by the magnetic bar (201) will be carried by the bubbles to the upper region close to the magnetic bar (201) again, and then be adsorbed by the magnetic bar (201), so that the epoxy resin solution in the production container (101) can continuously maintain the state of high scrap iron content in the upper half, low scrap iron content in the lower half and no scrap iron residue at the bottom; Step three, impurity-free epoxy resin discharge: the epoxy resin with no scrap iron residue at the bottom of the production container (101) is directly discharged and collected through the discharge port (104), and the epoxy resin is removed from the scrap iron; Step four, scrap iron removal: slide the upper sliding sleeve (304) upwards, the lower sliding sleeve (304) scrapes the scrap iron on the surface of the magnetic bar (201) and gathers, at the same time, the stretchy mesh cylinder (301) slowly contracts, and the mesh of the stretchy mesh cylinder (301) is closed after the stretchy mesh cylinder (301) contracts to the limit, the scrap iron collection component (300) inside gathers all the scrap iron adsorbed by the magnetic bar (201), the scrap iron collection component (300) is slid as a whole upwards to separate from the top end of the magnetic bar (201), and then the scrap iron inside the scrap iron collection component (300) is cleaned, and the scrap iron collection component (300) is reassembled to the surface of the magnetic bar (201) for next production.

6. The production method of an epoxy resin production apparatus according to claim 5, characterized by: In step one, the epoxy resin solution containing scrap iron is added to the production container (101) through the feed inlet (102) in a stable flow, so that the device can continuously run and the production efficiency is high.

7. The production method of an epoxy resin production apparatus according to claim 5, characterized by: In the second step, the gas is provided by the external gas supply device, and the gas flows through the gas supply pipe (206) and enters the bottom coil (202) and the side coil (204). The gas in the side coil (204) is discharged from the second gas hole (205) to generate bubbles. The bubbles discharged from the second gas hole (205) can float in the epoxy resin while having a diagonal moving track towards the side wall of the magnetic bar (201), so that the iron filings can easily approach the magnetic bar (201) and then be efficiently adsorbed.

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