Reaction kettle for producing sulfomethylated phenolic resin

Abstract

The utility model discloses a reaction kettle for producing sulfomethylated phenolic resin, which relates to the field of reaction kettles, and comprises a support base, an outer shell is fixedly mounted above the support base, an inner shell is rotatably clamped in the outer shell, a reciprocating screw rod is fixedly mounted in the middle of one side in the outer shell, and the reciprocating screw rod is rotatably clamped in the inner shell. The inner shell is rotatably arranged on the outer surface of the reciprocating lead screw in a sleeving manner, and a plurality of uniformly distributed stirring plates are fixedly mounted in the inner shell. By arranging the inner shell, the traditional mode that a stirring rod is used for stirring is abandoned, and the inner shell rotates to drive the stirring plates to rotate; according to the stirring device, raw materials can be continuously turned over in the inner shell, so that the stirring efficiency is improved, all parts of the raw materials can be uniformly heated, the situation that the local temperature is too high is prevented, the inner wall of the inner shell can be cleaned in real time in the stirring process, the time for workers to clean the inner wall in the later period is shortened, and the yield is improved.

Description

Technical Field

[0001] The utility model relates to the field of reaction kettles, in particular to a reaction kettle for producing sulfomethylphenolic resin. Background Art

[0002] Sulfomethylphenol-formaldehyde resin is a synthetic resin with excellent performance and wide application fields. Sulfomethylphenol-formaldehyde resin is a colloidal product obtained by multiple polymerization and sulfonation of phenol, formaldehyde, sulfonating agent and other raw materials under certain conditions, and then spray-dried to obtain a powdered sulfonated product. Therefore, at room temperature, it appears as a free-flowing solid powder.

[0003] At low temperatures, sulfomethylphenolic resins may become harder and more brittle; this is because as the temperature decreases, the mobility of the polymer chain segments decreases and the interaction between molecules increases, causing the resin to become more compact and rigid; in addition, if the resin contains incompletely reacted components or impurities, they may also be more likely to form crystals or precipitation at low temperatures;

[0004] At high temperatures, sulfomethylphenolic resin becomes softer and more plastic; this is because as the temperature rises, the mobility of the polymer chain segments increases and the interaction between molecules weakens, allowing the resin to deform and flow more easily; this property allows sulfomethylphenolic resin to be processed at high temperatures, such as hot pressing and injection molding; however, if the temperature is too high, it may cause the resin to decompose or degrade, producing harmful gases or liquids;

[0005] Traditionally, after the preparation of sulfomethylphenolic resin is completed, the inside of the reactor needs to be cleaned. Residual materials are easily attached to the stirring rod, so the inner wall of the reactor and the stirring rod need to be cleaned. There are many places that need to be cleaned, resulting in a long cleaning time between two preparations, thereby reducing the yield. In addition, when preparing sulfomethylphenolic resin, it is filtered after the reaction is completed, which will cause a part of the sulfomethylphenolic resin to cool and crystallize and be filtered out as waste, resulting in waste of sulfomethylphenolic resin.

[0006] Therefore, it is necessary to propose a reactor for producing sulfomethylphenol-formaldehyde resin to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a reaction kettle for producing sulfomethylphenol-formaldehyde resin, so as to solve the above-mentioned problems that the manual cleaning time is long and the cleaning of impurities after the reaction will cause waste of sulfomethylphenol-formaldehyde resin.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reaction kettle for producing sulfomethylphenolic resin, comprising a supporting base, an outer shell is fixedly installed on the top of the supporting base, an inner shell is rotatably mounted inside the outer shell, a reciprocating screw is fixedly installed at a middle position on one side of the inner shell, the inner shell is rotatably sleeved on the outer surface of the reciprocating screw, a plurality of evenly distributed stirring plates are fixedly installed inside the inner shell, a reciprocating scraper is slidably mounted inside the inner shell, the reciprocating scraper is meshingly sleeved on the outer surface of the reciprocating screw, a first slot corresponding to the stirring plate is provided on the reciprocating scraper, the first slot is slidably sleeved on the outer surface of the corresponding stirring plate, and a plurality of evenly distributed hole slots are provided on the reciprocating scraper.

[0009] Preferably, bucket-shaped collecting tubes are fixedly installed on both sides of the support base, a collection box body is provided on a detachable sliding card inside the bucket-shaped collecting tube, a discharge pipe is connected to the side of the bucket-shaped collecting tube away from the support base, and a filter plate is fixedly installed on the side of the collection box body close to the discharge pipe.

[0010] Preferably, a heating chamber is provided inside the outer shell, ventilation grooves are provided in the middle of both sides of the outer surface of the outer shell, the ventilation grooves are connected to the heating chamber, and an air inlet pipe and an air outlet pipe are fixedly installed inside the two ventilation grooves respectively.

[0011] Preferably, a motor is fixedly mounted on one side of the outer surface of the outer shell, and a driving end of the motor passes through the outer shell and is fixedly mounted on one side of the inner shell.

[0012] Preferably, an electrically controlled valve is installed on the discharge pipe.

[0013] Preferably, a third through slot and a fourth through slot are provided on both sides of the inner shell body, and the third through slot and the fourth through slot are located at symmetrical positions relative to each other, a first through slot is provided on both sides of the outer shell body at positions corresponding to the third through slot, and a second through slot is provided on both sides of the outer shell body at positions corresponding to the fourth through slot.

[0014] Preferably, a feed pipe is fixedly installed inside the first through groove.

[0015] Preferably, a plurality of evenly distributed supporting feet are fixedly mounted on the lower surface of the supporting base.

[0016] Technical effects and advantages of the utility model:

[0017] 1. This device abandons the traditional stirring method of using a stirring rod by setting an inner shell. The rotation of the inner shell drives the stirring plate to rotate, so that the raw materials are constantly turned inside the inner shell, which not only improves the stirring efficiency, but also can make the raw materials evenly heated everywhere to prevent the situation of local over-temperature. In addition, the inner wall of the inner shell can be cleaned in real time during the stirring process, reducing the time for workers to clean the inner wall later, thereby increasing production;

[0018] 2. The device can clean the precipitate generated in real time during the reaction by setting a reciprocating scraper, and collect the precipitate inside the collection box to prevent the precipitate from affecting the reaction, ensure the purity of the sulfomethylphenolic resin, and reduce the waste of raw materials;

[0019] 3. This device opens a heating chamber and heats the reactants with high-temperature steam, which can not only quickly heat the reactants to the temperature required for the reaction, but also quickly cool them down when the temperature gets out of control due to improper operation by workers, thereby reducing the waste of raw materials and ensuring the stability of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the structure of a reaction kettle for producing sulfomethylphenol-formaldehyde resin.

[0021] Figure 2 It is a structural schematic diagram of the support base in the utility model.

[0022] Figure 3 It is a schematic diagram of the connection structure of the outer shell and the inner shell in the utility model.

[0023] Figure 4 It is a cross-sectional view of the outer shell of the utility model.

[0024] Figure 5 It is a cross-sectional view of the inner shell of the present invention.

[0025] In the figure: 1. support base; 2. outer shell; 3. inner shell; 4. feed pipe; 5. support foot; 11. bucket-shaped collecting pipe; 12. discharge pipe; 13. collecting box; 21. heating chamber; 22. first through groove; 23. second through groove; 24. reciprocating screw rod; 25. reciprocating scraper; 26. first slot; 27. hole slot; 28. motor; 31. third through groove; 32. fourth through groove; 33. stirring plate; 121. electric control valve; 131. filter plate; 211. ventilation groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides Figure 1-Figure 5 The reactor for producing sulfomethylphenolic resin shown in the figure comprises a support base 1, an outer shell 2 is fixedly installed on the upper side of the inner shell 3 support base 1, a plurality of evenly distributed support feet 5 are fixedly installed on the lower surface of the inner shell 3 support base 1, a heating chamber 21 is provided inside the inner shell 3 outer shell 2, ventilation grooves 211 are provided in the middle of both sides of the outer surface of the inner shell 3 outer shell 2, the ventilation grooves 211 of the inner shell 3 are connected to the heating chamber 21, and the two ventilation grooves 211 of the inner shell 3 are respectively fixedly installed with inlet The air pipe and the air outlet pipe, the inner shell 3 and the outer shell 2 are internally rotated to be provided with the inner shell 3, both sides of the inner shell 3 are provided with a third through groove 31 and a fourth through groove 32, the third through groove 31 and the fourth through groove 32 of the inner shell 3 are located at mutually symmetrical positions, both sides of the inner shell 3 and the outer shell 2 are provided with a first through groove 22 at positions corresponding to the third through groove 31, both sides of the inner shell 3 and the outer shell 2 are provided with a second through groove 23 at positions corresponding to the fourth through groove 32, and the feed pipe 4 is fixedly installed inside the first through groove 22 of the inner shell 3.

[0028] During actual use, the device is in an initial state, at which time the first through groove 22 is connected to the third through groove 31, and the fourth through groove 32 is connected to the second through groove 23, and then the raw materials required for the reaction are added to the interior of the inner shell 3 through the feed pipe 4, and the raw materials do not exceed two-thirds of the interior of the inner shell 3, and then high-temperature steam is input into the interior of the air inlet pipe, and then the high-temperature steam will enter the interior of the heating chamber 21 and finally be discharged through the air outlet pipe. In this process, the inner shell 3 and the raw materials inside the inner shell 3 can be heated, so as to facilitate reaching the temperature required for the reaction. If the temperature of the reaction is out of control, low-temperature gas can be introduced to quickly cool the interior of the outer shell 2.

[0029] A motor 28 is fixedly installed on one side of the outer surface of the inner shell 3 and the outer shell 2. The driving end of the motor 28 of the inner shell 3 passes through the outer shell 2 and is fixedly installed on one side of the inner shell 3. A reciprocating screw 24 is fixedly installed at the middle position of one side of the inner shell 3 and the outer shell 2. The inner shell 3 is rotatably sleeved on the outer surface of the reciprocating screw 24. A plurality of evenly distributed stirring plates 33 are fixedly installed inside the inner shell 3. A reciprocating scraper 25 is slidably clamped inside the inner shell 3. The reciprocating scraper 25 of the inner shell 3 is meshingly sleeved on the outer surface of the reciprocating screw 24. A first slot 26 corresponding to the stirring plate 33 is provided on the reciprocating scraper 25 of the inner shell 3. The first slot 26 of the inner shell 3 is slidably sleeved on the outer surface of the corresponding stirring plate 33. A plurality of evenly distributed hole grooves 27 are provided on the reciprocating scraper 25 of the inner shell 3.

[0030] When the raw materials are added to the inner shell 3, the motor 28 is started at this time, and the motor 28 drives the inner shell 3 to rotate. The rotation of the inner shell 3 drives the stirring plate 33 and the reciprocating scraper 25 inside it to rotate, and the reciprocating screw 24 is fixedly installed on the outer shell 2, so when the reciprocating scraper 25 is driven to rotate, it can make a reciprocating motion on the reciprocating screw 24. When the reciprocating scraper 25 makes a reciprocating motion, the raw materials attached to the inner wall of the inner shell 3 and the raw materials attached to the stirring plate 33 can be scraped off to prevent the raw materials from sticking to the inner wall of the inner shell 3, resulting in poor heating effect and even affecting the next processing, which requires a lot of time for manual cleaning. When the inner shell 3 rotates, the stirring plate 33 inside it rotates together, which can drive the raw materials inside to roll, thereby achieving the purpose of stirring. During the stirring process, the interior of the inner shell 3 can also be cleaned, abandoning the traditional stirring rod stirring, and cleaning the inner wall during the stirring process, reducing the time for workers to clean the reactor, thereby shortening the interval between multiple processing and improving production efficiency.

[0031] A bucket-shaped collecting tube 11 is fixedly installed on both sides of the support base 1 of the inner shell 3, a detachable sliding card is provided inside the bucket-shaped collecting tube 11 of the inner shell 3 with a collecting box body 13, a discharge pipe 12 is connected to the side of the bucket-shaped collecting tube 11 of the inner shell 3 away from the support base 1, a filter plate 131 is fixedly installed on the side of the collection box body 13 of the inner shell 3 close to the discharge pipe 12, and an electric control valve 121 is installed on the discharge pipe 12 of the inner shell 3.

[0032] The preparation of sulfomethylphenol-formaldehyde resin usually uses phenol and formaldehyde as raw materials, and adds sulfonating agents such as sodium bisulfite / sodium sulfite for reaction. The purity of the raw materials directly affects the progress of the reaction and the quality of the product. If the raw materials contain impurities, these impurities may form precipitation during the reaction or in the post-processing stage; the type and amount of sulfonating agent have an important influence on the performance of sulfomethylphenol-formaldehyde resin. Sulfonating agents such as methylsulfonic acid, benzenesulfonic acid, naphthalenesulfonic acid, etc. are generally used in an amount of 5% to 15% of the mass of the phenol-formaldehyde resin. Improper use of sulfonating agents may result in the product containing unreacted sulfonating agents or reaction by-products, which may form precipitation.

[0033] In summary, in the process of preparing sulfomethylphenolic resin, various precipitates may be generated inside the inner shell 3 due to various factors, and the sulfomethylphenolic resin is in a high temperature state during the reaction, so it will be in liquid state. When the reaction is completed and the material is discharged, a certain amount of crystallization will occur due to the temperature drop, which is easy to be confused with the precipitate. If it is filtered at this time, a certain amount of sulfomethylphenolic resin will be wasted. If it is not filtered, the precipitate will affect the purity of the sulfomethylphenolic resin. Therefore, the device is provided with a reciprocating scraper 25. When the reciprocating scraper 25 is moving, it can filter the precipitate generated inside the inner shell 3, push the precipitate back and forth into the interior of the collection box 13, clean and collect the precipitate during the reaction, and prevent the sulfomethylphenolic resin from cooling and crystallizing. When the reaction is completed, open The electric control valve 121, at this time, the fourth through groove 32 and the third through groove 31 repeatedly overlap with the second through groove 23 in sequence, and then the product will flow through the collecting box body 13 and be filtered by the filter plate 131 and then enter the inside of the discharge pipe 12. The discharge pipe 12 is connected to the external storage device, and the sediment will be blocked by the collecting box body 13. Because the inner shell body 3 is still rotating during the discharge, the reciprocating scraper 25 can push the material to assist the discharge during the discharge, prevent the material from sticking to the inner wall of the inner shell body 3, increase the discharge speed, and wait for the material to flow out completely. Pull the collecting box body 13 out of the bucket-shaped collecting tube 11, and then clean the collecting box body 13. The sediment can be cleaned in real time during the reaction process to prevent the sediment from affecting the reaction, ensure the purity of the sulfomethyl phenolic resin, and reduce the waste of raw materials.

[0034] Working principle: When actually used, the device is in the initial state, at which time the first through groove 22 is connected to the third through groove 31, and the fourth through groove 32 is connected to the second through groove 23, and then the raw materials required for the reaction are added to the inner shell 3 through the feed pipe 4, and the raw materials do not exceed two-thirds of the inner shell 3, and then high-temperature steam is input into the air inlet pipe, and then the high-temperature steam will enter the heating chamber 21 and finally be discharged through the air outlet pipe. In this process, the inner shell 3 and the raw materials inside the inner shell 3 can be heated, so as to facilitate reaching the temperature required for the reaction. If the temperature of the reaction is out of control, low-temperature gas can be introduced to quickly cool down the inside of the outer shell 2;

[0035] When the raw materials are added to the inner shell 3, the motor 28 is started, and the motor 28 drives the inner shell 3 to rotate, and the inner shell 3 rotates to drive the stirring plate 33 and the reciprocating scraper 25 inside it to rotate, and the reciprocating screw 24 is fixedly installed on the outer shell 2, so when the reciprocating scraper 25 is driven to rotate, it can make a reciprocating motion on the reciprocating screw 24, and when the reciprocating scraper 25 makes a reciprocating motion, it can scrape off the raw materials attached to the inner wall of the inner shell 3 and the raw materials attached to the stirring plate 33, so as to prevent the raw materials from sticking to the inner wall of the inner shell 3, resulting in poor heating effect, and even affecting the next processing, which requires a lot of time for manual cleaning, and when the inner shell 3 rotates, the stirring plate 33 inside it rotates together, which can drive the internal raw materials to roll, thereby achieving the purpose of stirring;

[0036] When the reciprocating scraper 25 is moving, it can filter the precipitate generated inside the inner shell 3, push the precipitate back and forth into the interior of the collecting box body 13, clean and collect the precipitate during the reaction, and prevent the sulfomethyl phenolic resin from cooling and crystallizing. When the reaction is completed, open the electric control valve 121. At this time, the fourth through groove 32 and the third through groove 31 repeatedly overlap with the second through groove 23 in sequence, and then the product will flow through the collecting box body 13 and be filtered by the filter plate 131 and enter the interior of the discharge pipe 12. The discharge pipe 12 is connected to an external storage device, and the precipitate will be blocked by the collecting box body 13. Because the inner shell 3 is still rotating during discharging, the reciprocating scraper 25 can push the material to assist in discharging during discharging, prevent the material from sticking to the inner wall of the inner shell body 3, and increase the discharging speed. When waiting for all the materials to flow out, pull the collecting box body 13 out of the bucket-shaped collecting pipe 11, and then clean the collecting box body 13.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reaction kettle for producing sulfomethylphenolic resin, comprising a supporting base (1), characterized in that: An outer shell (2) is fixedly mounted above the support base (1); an inner shell (3) is rotatably mounted inside the outer shell (2); a reciprocating screw (24) is fixedly mounted at a middle position on one side of the inner shell (2); the inner shell (3) is rotatably sleeved on the outer surface of the reciprocating screw (24); a plurality of evenly distributed stirring plates (33) are fixedly mounted inside the inner shell (3); a reciprocating scraper (25) is slidably mounted inside the inner shell (3); the reciprocating scraper (25) is meshingly sleeved on the outer surface of the reciprocating screw (24); a first slot (26) corresponding to the stirring plate (33) is provided on the reciprocating scraper (25); the first slot (26) is slidably sleeved on the outer surface of the corresponding stirring plate (33); and a plurality of evenly distributed hole slots (27) are provided on the reciprocating scraper (25).

2. A reactor for producing sulfomethylphenol-formaldehyde resin according to claim 1, characterized in that: A bucket-shaped collecting tube (11) is fixedly mounted on both sides of the support base (1); a detachable sliding card is provided inside the bucket-shaped collecting tube (11) with a collecting box body (13); a discharge tube (12) is connected to and mounted on the side of the bucket-shaped collecting tube (11) away from the support base (1); and a filter plate (131) is fixedly mounted on the side of the collecting box body (13) close to the discharge tube (12).

3. A reactor for producing sulfomethylphenol-formaldehyde resin according to claim 1, characterized in that: A heating chamber (21) is provided inside the outer shell (2), ventilation grooves (211) are provided in the middle of both sides of the outer surface of the outer shell (2), the ventilation grooves (211) are connected to the heating chamber (21), and an air inlet pipe and an air outlet pipe are fixedly installed inside the two ventilation grooves (211), respectively.

4. A reaction kettle for producing sulfomethylphenol-formaldehyde resin according to claim 1, characterized in that: A motor (28) is fixedly mounted on one side of the outer surface of the outer shell (2); a driving end of the motor (28) passes through the outer shell (2) and is fixedly mounted on one side of the inner shell (3).

5. A reaction kettle for producing sulfomethylphenol-formaldehyde resin according to claim 2, characterized in that: An electric control valve (121) is installed on the discharge pipe (12).

6. A reaction kettle for producing sulfomethylphenol-formaldehyde resin according to claim 1, characterized in that: The inner shell (3) is provided with a third through slot (31) and a fourth through slot (32) on both sides, and the third through slot (31) and the fourth through slot (32) are located at mutually symmetrical positions; the outer shell (2) is provided with a first through slot (22) at positions corresponding to the third through slot (31); and the outer shell (2) is provided with a second through slot (23) at positions corresponding to the fourth through slot (32).

7. A reaction kettle for producing sulfomethylphenol-formaldehyde resin according to claim 6, characterized in that: A feed pipe (4) is fixedly installed inside the first through groove (22).

8. The reaction kettle for producing sulfomethylphenol-formaldehyde resin according to claim 1, characterized in that: A plurality of evenly distributed supporting feet (5) are fixedly mounted on the lower surface of the supporting base (1).

Images