High-purity methyl 3-methoxypropionate filtering device

Abstract

The utility model discloses a high-purity methyl 3-methoxypropionate filtering device which is provided with a product tank for conveying materials, and a conveying pipe is mounted on the right side of the outer surface of the product tank; comprising a molecular sieve device installed on the upper side of the outer surface of the conveying pipe, a first feeding pipe is installed on the upper side of the molecular sieve device, and an ion exchange device is installed at the other end of the first feeding pipe. According to the high-purity methyl 3-methoxypropionate filtering device, the conveying pipe with the conveying pump is arranged, materials in the product tank are stably pumped into the filtering device, and the molecular sieve device is matched, so that methyl alcohol, methyl acrylate, acrylic acid, sodium methoxide and other impurities in industrial methyl 3-methoxypropionate can be effectively adsorbed and removed; and ion-state metal, anions, organic pigment free alkali and the like are removed by gradually matching with an ion exchange device, and finally, the material is filtered by matching with a filter element filter, and the purity of the product is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a high-purity 3-methoxy methyl propionate filtering device. Background Art

[0002] When high-purity methyl 3-methoxypropionate is used, it is mainly used to produce electronic-grade chemicals. Circulation filtration can filter out smaller-scale fine particles, colloids, and some metal impurities. However, when filtering high-purity methyl 3-methoxypropionate, there are still some problems with the filtration device used.

[0003] In the prior art, the authorization publication (announcement) number: CN112961051A "a method for purifying methyl 3-methoxypropionate" includes the following steps: step 1, preparing materials; step 2, mixing; step 3, neutralizing; step 4, recovering; step 5, purifying; wherein in the above step 1, anhydrous methanol, methyl acrylate, alkali metal alkoxide and solid acid are weighed separately for use;

[0004] During the operation of the above-mentioned device, filtration and distillation treatments are added, and there is no need for alkali washing and water separation treatment, so there are few side reactions, no three wastes are generated, and the pollution to the environment is reduced. In addition, the reaction conversion rate is high, the purification effect is good, and the purity is easily obtained to be above 99.8%. 3-methoxypropionic acid methyl ester can be further processed into electronic grade, which greatly simplifies the separation process, saves the loss of resources, and reduces the production cost of 3-methoxypropionic acid methyl ester. At the same time, the purification process is simple, the reaction conditions are mild, and it is convenient for personnel to operate, which is conducive to the large-scale production of 3-methoxypropionic acid methyl ester. However, it is inconvenient to circulate and filter the 3-methoxypropionic acid methyl ester during use, which easily causes waste of materials. In addition, it is inconvenient to clean the filter device regularly during filtration, which easily leads to frequent replacement of filter elements and waste of filter materials. Utility Model Content

[0005] The utility model aims to provide a high-purity 3-methoxypropionate methyl filtration device to solve the problems proposed in the above background technology that it is inconvenient to circulate and filter 3-methoxypropionate during use, which easily leads to waste of materials, and it is inconvenient to clean the filter device regularly during filtration, which easily leads to waste of filter materials due to frequent replacement of filter elements.

[0006] To achieve the above object, the utility model provides the following technical solution: a high-purity methyl 3-methoxypropionate filtering device, provided with a product tank for conveying materials, and a conveying pipe is installed on the right side of the outer surface of the product tank;

[0007] It comprises: a molecular sieve device installed on the upper side of the outer surface of the delivery pipe, a feed pipe 1 is installed on the upper side of the molecular sieve device, an ion exchange device is installed on the other end of the feed pipe 1, and a feed pipe 2 is installed on the upper side of the outer surface of the ion exchange device;

[0008] The filter element filter is installed on the right side of the outer surface of the second feeding pipe, and a bottom ring is installed on the lower side of the inner surface of the filter element filter, and the upper surface of the bottom ring is supported and connected with a bottom plate, and a positioning column and a positioning tube are installed on the upper surface of the bottom plate, and the filter element body is nested and connected on the outer surface of the positioning tube;

[0009] The cover plate is nested and installed on the upper surface of the positioning column, and the cover plate is located on the upper surface of the filter element body, and the lower surface of the filter element filter is installed with supporting legs, and at the same time, a discharge pipe is arranged on the lower surface of the filter element filter, and a circulation pipe is docked on the lower surface of the discharge pipe, and the other end of the circulation pipe is docked on the upper surface of the product tank, and a waste pipe with a switch is installed on the right side of the outer surface of the filter element filter.

[0010] Preferably, the product tank forms a conveying structure with the molecular sieve device through a conveying pipe, and the molecular sieve device is used for step-by-step filtering through a feed pipe 1 and an ion exchange device, and the ion exchange device forms an integrated structure with a filter element filter through a feed pipe 2.

[0011] Through the above structure, step-by-step filtering can be effectively performed during use, and the final filtering and purification can be effectively performed in conjunction with the assembled filter element filter.

[0012] Preferably, the filter element filter forms a limiting support structure through the bottom ring and the bottom plate, and the bottom plate, the positioning column and the positioning tube form an integrated structure, the bottom plate and the filter element body form a built-in nested structure through the positioning tube, and the bottom plate and the filter element body form a clamping limiting structure through the positioning column and the cover plate.

[0013] Through the above structure, the device can be effectively supported and set when in use, and cooperate with the assembled positioning tube to facilitate the circulation of filtered materials, and the clamping between the bottom plate and the cover plate effectively improves the limit setting of the filter element body.

[0014] Preferably, the support legs are arranged at equal angles with respect to the outer surface of the filter element filter, and the filter element filter, the discharge pipe and the waste pipe form an integrated structure, and the discharge pipe forms a circulation filtering device with the product tank through the circulation pipe.

[0015] Through the above structure, the filtered liquid can be effectively circulated and transported during use, and the circulating filtering effect can be improved. A waste pipe with a switch is provided to discharge the cleaned waste liquid.

[0016] Preferably, a cleaning plate is connected through the inner surface of the filter element filter, and a through hole is opened on the inner surface of the cleaning plate to form a through assembly with the filter element body, and the cleaning plate is located between the bottom plate and the cover plate, and a moving block is clamped and installed on the inner surface of the cleaning plate, and a threaded rod is threadedly connected to the inner surface of the moving block, and a limit block, a cleaning liquid pipe and a cleaning nozzle are installed on the outer surface of the cleaning plate, and the limit block slides on the inner wall of the filter element filter.

[0017] Through the above structure, the filter element can be stably assembled during use, and can be used in conjunction with a cleaning nozzle to clean the outer surface of the filter element body.

[0018] Preferably, the cleaning plate forms a through structure with the filter element body through the through hole, the cleaning plate forms a threaded moving structure with the threaded rod through the moving block, and the outer surface shape of the moving block is an "I"-shaped structure, and the cleaning plate forms a limited sliding structure with the filter element filter through the limiting block, and the cleaning plate forms an integrated structure with the cleaning liquid pipe and the cleaning nozzle, and the cleaning nozzle is respectively assembled on both sides of the through hole, and the outer surface shape of the cleaning nozzle is a bent structure.

[0019] Through the above structure, the stability during use is effectively improved, and extrusion damage to the filter element body is prevented. The use of the moving block can prevent the cleaning plate from twisting, improve the stability of the cleaning plate movement, and provide a cleaning nozzle with an inclined and bent structure to effectively clean the filter element body.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The high-purity 3-methoxypropionic acid methyl ester filtration device is provided with a delivery pipe with a delivery pump, which stably pumps the material in the product tank into the filtration device, and cooperates with a molecular sieve device to effectively adsorb and remove impurities such as methanol, methyl acrylate, acrylic acid, sodium methoxide, etc. in industrial-grade 3-methoxypropionic acid methyl ester, and gradually cooperates with an ion exchange device to remove ionic metals, anions, and organic pigment free bases, etc., and finally cooperates with a filter element filter to filter the material and maintain the purity of the product;

[0022] 2. The high-purity methyl 3-methoxypropionate filtering device has a filter element filter which can cooperate with a stably assembled filter element body to form effective filtration when in use, and a slidable cleaning plate is assembled on the outside of the filter element body to effectively cooperate with a cleaning nozzle installed on the hollow cleaning plate to regularly clean the surface of the filter element body, thereby increasing the service life of the filter element body, and the cleaning plate is nested in the cooperation of the moving block and the threaded rod, and the use of the installed limit block improves the stability of the cleaning device when it is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the three-dimensional structure of the product tank of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a half-sectioned tank of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the ion exchange device of the utility model;

[0026] Figure 4 This is a schematic diagram of a half-section three-dimensional structure of the filter element of the utility model;

[0027] Figure 5 It is a schematic diagram of a partially cutaway three-dimensional structure of a cleaning plate of the utility model.

[0028] In the figure: 1. product tank; 2. delivery pipe; 3. molecular sieve device; 4. feed pipe one; 5. ion exchange device; 6. feed pipe two; 7. filter element filter; 8. bottom ring; 9. bottom plate; 10. positioning column; 11. positioning pipe; 12. filter element body; 13. cover plate; 14. support leg; 15. discharge pipe; 16. circulation pipe; 17. waste pipe; 18. cleaning plate; 19. through hole; 20. moving block; 21. threaded rod; 22. limit block; 23. cleaning liquid pipe; 24. cleaning nozzle. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 5 , the utility model provides a technical solution: a high-purity methyl 3-methoxypropionate filtering device, provided with a product tank 1 for conveying materials, and a conveying pipe 2 is installed on the right side of the outer surface of the product tank 1;

[0031] It includes: a molecular sieve device 3, which is installed on the upper side of the outer surface of the delivery pipe 2, and a feed pipe 1 4 is installed on the upper side of the molecular sieve device 3, and an ion exchange device 5 is installed on the other end of the feed pipe 1 4, and a feed pipe 2 6 is installed on the upper side of the outer surface of the ion exchange device 5;

[0032] The product tank 1 forms a conveying structure with the molecular sieve device 3 through the conveying pipe 2, and the molecular sieve device 3 is used for step-by-step filtering through the feeding pipe 1 4 and the ion exchange device 5, and the ion exchange device 5 forms an integrated structure with the filter element filter 7 through the feeding pipe 2 6.

[0033] When in use, the 3-methoxypropionic acid methyl ester product is transported to the product tank 1, and the pump and the delivery pipe 2 are used to pump the material into the filtering device, wherein the material is transported to the molecular sieve device 3, and is transported to the ion exchange device 5 through the feeding pipe 1 4 assembled by the molecular sieve device 3, and is coordinated with the filter element filter 7 installed by the feeding pipe 2 6 assembled by the ion exchange device 5, thereby forming an integral filtering device. During filtering, the molecular sieve device 3 removes impurities such as methanol, methyl acrylate, acrylic acid, sodium methoxide, etc. in the industrial-grade 3-methoxypropionic acid methyl ester, and the ion exchange device 5 removes ionic metals, anions, and organic pigment free bases, etc., and finally other trace particulate matter is filtered out through the filter element filter 7 to ensure the purity of the product.

[0034] The filter element filter 7 is installed on the right side of the outer surface of the feed pipe 6, and a bottom ring 8 is installed on the lower side of the inner surface of the filter element filter 7, and a bottom plate 9 is supported and connected on the upper surface of the bottom ring 8, and a positioning column 10 and a positioning tube 11 are installed on the upper surface of the bottom plate 9, and a filter element body 12 is nested and connected on the outer surface of the positioning tube 11;

[0035] The cover plate 13 is nested and installed on the upper surface of the positioning column 10, and the cover plate 13 is located on the upper surface of the filter element body 12, and the lower surface of the filter element filter 7 is installed with a supporting leg 14, and at the same time, a discharge pipe 15 is provided on the lower surface of the filter element filter 7, and the lower surface of the discharge pipe 15 is connected to a circulation pipe 16, and the other end of the circulation pipe 16 is connected to the upper surface of the product tank 1, and a waste pipe 17 with a switch is installed on the right side of the outer surface of the filter element filter 7.

[0036] The filter element filter 7 forms a limiting support structure with the bottom ring 8 and the bottom plate 9, and the bottom plate 9 forms an integrated structure with the positioning column 10 and the positioning tube 11. The bottom plate 9 forms a built-in nested structure with the filter element body 12 through the positioning tube 11, and the bottom plate 9 forms a clamping limiting structure with the filter element body 12 through the positioning column 10 and the cover plate 13.

[0037] The support legs 14 are arranged at equal angles with respect to the outer surface of the cartridge filter 7 , and the cartridge filter 7 forms an integrated structure with the discharge pipe 15 and the waste pipe 17 , and the discharge pipe 15 forms a circulation filtering device with the product tank 1 through the circulation pipe 16 .

[0038] The inner surface of the filter element filter 7 is penetrated by a cleaning plate 18, and a through hole 19 is opened on the inner surface of the cleaning plate 18, and a through assembly is formed on the filter element body 12, and the cleaning plate 18 is located between the bottom plate 9 and the cover plate 13, and a moving block 20 is clamped and installed on the inner surface of the cleaning plate 18, and a threaded rod 21 is threadedly connected to the inner surface of the moving block 20, and a limit block 22, a cleaning liquid pipe 23 and a cleaning nozzle 24 are installed on the outer surface of the cleaning plate 18, and the limit block 22 is limited to slide on the inner wall of the filter element filter 7.

[0039] The cleaning plate 18 forms a through structure with the filter element body 12 through the through hole 19, and the cleaning plate 18 forms a threaded moving structure with the threaded rod 21 through the moving block 20, and the outer surface shape of the moving block 20 is an "I"-shaped structure, and the cleaning plate 18 forms a limited sliding structure with the filter element filter 7 through the limiting block 22, and the cleaning plate 18 forms an integrated structure with the cleaning liquid pipe 23 and the cleaning nozzle 24, and the cleaning nozzle 24 is respectively assembled on both sides of the through hole 19, and the outer surface shape of the cleaning nozzle 24 is a bent structure.

[0040] When methyl 3-methoxypropionate is transported to the filter element filter 7 installed on the support leg 14, it will be filtered through the filter element body 12 assembled inside the filter element filter 7, and the filter element body 12 will be clamped between the bottom plate 9 and the cover plate 13 during use, and the bottom plate 9 is stably positioned on the lower side of the inner surface of the filter element filter 7 through the bottom ring 8, so as to improve the stability of the device, and cooperate with the use of the positioning column 10 and the positioning tube 11 installed on the bottom plate 9, while positioning the filter element body 12, the cover plate 13 is locked to prevent it from falling off, and the filtered material is transported to the inside of the positioning tube 11, so as to flow into the discharge pipe 15, and cooperate with the circulation pipe 16 installed on the discharge pipe 15, so as to be circulated and transported to the product tank 1, so as to be circulated and filtered for use, and in the filtration After a period of time, it stops and starts the motor on the filter element filter 7, so that the threaded rod 21 can be adjusted to rotate, and the cleaning plate 18 installed on the threaded adjustment moving block 20 can be moved up and down, so that the cleaning plate 18 cooperates with the through hole 19 to penetrate the filter element body 12 to prevent it from being damaged. When the cleaning plate 18 moves, the limiting block 22 and the filter element filter 7 can be controlled to limit the sliding movement, thereby preventing the cleaning plate 18 from being twisted and improving the stability during use. By using the cleaning liquid pipe 23 and the cleaning nozzle 24 assembled by the hollow cleaning plate 18, the outer surface of the filter element body 12 can be effectively cleaned, and the waste liquid can be discharged through the waste pipe 17, so as to start the filtering device and start filtering again, and reduce the waste of replacing the filter element body 12 and the downtime of the filtering device.

[0041] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-purity methyl 3-methoxypropionate filtering device, comprising a product tank (1) for conveying materials, and a conveying pipe (2) is installed on the right side of the outer surface of the product tank (1); It is characterized in that include: A molecular sieve device (3) is installed on the upper side of the outer surface of the delivery pipe (2), and a feed pipe 1 (4) is installed on the upper side of the molecular sieve device (3), and an ion exchange device (5) is installed on the other end of the feed pipe 1 (4), and a feed pipe 2 (6) is installed on the upper side of the outer surface of the ion exchange device (5); A filter element filter (7) is installed on the right side of the outer surface of the second feeding pipe (6), and a bottom ring (8) is installed on the lower side of the inner surface of the filter element filter (7), and the upper surface of the bottom ring (8) is supported and connected with a bottom plate (9), and a positioning column (10) and a positioning tube (11) are installed on the upper surface of the bottom plate (9), and a filter element body (12) is nested and connected on the outer surface of the positioning tube (11); A cover plate (13) is nested and installed on the upper surface of the positioning column (10), and the cover plate (13) is located on the upper surface of the filter element body (12), and a support leg (14) is installed on the lower surface of the filter element filter (7), and a discharge pipe (15) is provided on the lower surface of the filter element filter (7), and a circulation pipe (16) is docked on the lower surface of the discharge pipe (15), and the other end of the circulation pipe (16) is docked on the upper surface of the product tank (1), and a waste pipe (17) with a switch is installed on the right side of the outer surface of the filter element filter (7).

2. A high-purity 3-methoxypropionate filtration device according to claim 1, characterized in that: The product tank (1) forms a conveying structure with the molecular sieve device (3) through the conveying pipe (2), and the molecular sieve device (3) is used for step-by-step filtering through the first feed pipe (4) and the ion exchange device (5), and the ion exchange device (5) forms an integrated structure with the filter element filter (7) through the second feed pipe (6).

3. A high-purity 3-methoxypropionate filtration device according to claim 1, characterized in that: The filter element filter (7) forms a limiting support structure through a bottom ring (8) and a bottom plate (9), and the bottom plate (9) forms an integrated structure with a positioning column (10) and a positioning tube (11); the bottom plate (9) forms a built-in nesting structure with a filter element body (12) through the positioning tube (11), and the bottom plate (9) forms a clamping limiting structure with the filter element body (12) through the positioning column (10) and a cover plate (13).

4. A high-purity 3-methoxypropionate filtration device according to claim 1, characterized in that: The support legs (14) are arranged at equal angles with respect to the outer surface of the cartridge filter (7), and the cartridge filter (7) forms an integrated structure with the discharge pipe (15) and the waste pipe (17), and the discharge pipe (15) forms a circulation filtering device with the product tank (1) through the circulation pipe (16).

5. A high-purity 3-methoxypropionate filtration device according to claim 1, characterized in that: The inner surface of the filter element filter (7) is penetrated by a cleaning plate (18), and a through hole (19) is opened on the inner surface of the cleaning plate (18), and a through assembly is formed on the filter element body (12), and the cleaning plate (18) is located between the bottom plate (9) and the cover plate (13), and a moving block (20) is mounted on the inner surface of the cleaning plate (18), and a threaded rod (21) is threadedly connected to the inner surface of the moving block (20), and a limit block (22), a cleaning liquid pipe (23) and a cleaning nozzle (24) are installed on the outer surface of the cleaning plate (18), and the limit block (22) is limitedly slid on the inner wall of the filter element filter (7).

6. A high-purity 3-methoxypropionate filtration device according to claim 5, characterized in that: The cleaning plate (18) forms a through structure with the filter element body (12) through the through hole (19); the cleaning plate (18) forms a threaded moving structure with the threaded rod (21) through the moving block (20); the outer surface of the moving block (20) is in the shape of an "I"-shaped structure; the cleaning plate (18) forms a limited sliding structure with the filter element filter (7) through the limiting block (22); the cleaning plate (18) forms an integrated structure with the cleaning liquid pipe (23) and the cleaning nozzle (24); the cleaning nozzle (24) is respectively assembled on both sides of the through hole (19); and the outer surface of the cleaning nozzle (24) is in the shape of a bent structure.

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