Concentration device for preparing dipropylene glycol methyl ether acetate

Abstract

The utility model relates to the technical field of chemical engineering, and discloses a concentration device for preparing dipropylene glycol methyl ether acetate, which comprises a shell, the reaction tank is fixedly connected to the interior of the shell; the filter plate is inserted into the shell and the reaction tank; the mounting cavity is formed in the rear side of the interior of the shell; the fixing rod is fixedly connected to the interior of the mounting cavity, and the sliding block is slidably connected to the exterior of the fixing rod; the pull rod is fixedly connected to the front side of the exterior of the sliding block, and the insertion block is fixedly connected to the rear side of the exterior of the sliding block; the spring is arranged outside the fixed rod in a sleeving manner; and a scraping assembly. According to the dipropylene glycol methyl ether acetate preparation device disclosed by the utility model, the filter plate mounted in the reaction tank can be conveniently detached and cleaned, and impurities are prevented from blocking filter holes, so that the preparation efficiency of dipropylene glycol methyl ether acetate is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a concentration device for the preparation of dipropylene glycol methyl ether acetate. Background Technology

[0002] Dipropylene glycol methyl ether acetate is a high-performance solvent-based ester organic compound commonly used in industrial and chemical products, especially in coatings, inks, cleaning agents, and electronic chemicals. In the preparation process of dipropylene glycol methyl ether acetate, the main purpose of using a concentration device is to improve product purity and remove by-products.

[0003] When using the concentration device, firstly, dipropylene glycol methyl ether acetate is pumped out of the storage tank by a water pump and sprayed into the reaction tank through a spray pipe. The liquid falls onto the filter plate for preliminary filtration and distribution. Then, hot air is introduced into the tank to contact the sprayed liquid and evaporate the water, thereby achieving concentration. Finally, the concentrated product is discharged from the outlet.

[0004] Although existing concentration equipment can complete the preparation of dipropylene glycol methyl ether acetate, the filter plates inside the reaction vessel are usually fixed. After long-term use, deposits tend to accumulate on the surface or in the pores of the filter plates, forming scale or blockage, which reduces the preparation efficiency of dipropylene glycol methyl ether acetate. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a concentration device for the preparation of dipropylene glycol methyl ether acetate, which aims to improve the problem that in the prior art, the filter plates inside the reaction vessel are usually fixed, and the filter plates are prone to accumulating deposits on the surface or in the pores after long-term use, forming scale or blockage.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A concentration apparatus for preparing dipropylene glycol methyl ether acetate, comprising:

[0008] case;

[0009] The reaction vessel is fixedly connected inside the shell;

[0010] A filter plate, which is inserted into the interior of the housing and the reaction vessel;

[0011] The mounting cavity is formed inside the rear side of the housing;

[0012] A fixed rod and a slider are provided, wherein the fixed rod is fixedly connected inside the mounting cavity, and the slider is slidably connected outside the fixed rod.

[0013] A pull rod and a plug, wherein the pull rod is fixedly connected to the front side of the slider and the plug is fixedly connected to the rear side of the slider;

[0014] A spring, which is sleeved on the outside of the fixed rod;

[0015] And a scraping assembly for scraping off impurities adhering to the inner wall of the reaction vessel.

[0016] Furthermore, the scraping assembly includes a motor, which is located on the bottom left side of the housing. A drive wheel is fixedly connected to the output end of the motor. A rotating rod is rotatably connected inside the reaction vessel. A driven wheel is fixedly connected to the bottom of the rotating rod. The drive wheel is connected to the driven wheel via a belt. Connecting rods are fixedly connected to both sides of the rotating rod. Scrapers are fixedly connected to the outside of both connecting rods. The scrapers are in contact with the inner wall of the reaction vessel.

[0017] Furthermore, a through hole is provided inside the housing, the insert block is slidably connected inside the through hole, a through hole is provided outside the housing, the pull rod is slidably connected inside the through hole, a slot is provided outside the filter plate, and the insert block is inserted into the slot.

[0018] Furthermore, a mounting ring is fixedly connected to the bottom left side of the housing, and the motor is fixedly connected to the outside of the mounting ring.

[0019] Furthermore, an inlet pipe is fixedly connected to the left side of the shell and the inside of the reaction vessel, and a spray pipe is fixedly connected to the bottom of the inlet pipe. The spray pipe is located inside the reaction vessel, and an installation rod is fixedly connected to the right side of the outside of the spray pipe. The bottom of the installation rod is fixedly connected to the right side of the inside of the reaction vessel.

[0020] Furthermore, a fan is fixedly connected to the outer right side of the shell and the reaction vessel, an air inlet pipe is fixedly connected to the input end of the fan, an exhaust pipe is fixedly connected to the output end of the fan, and the exhaust pipe is fixedly connected to the inside of the reaction vessel.

[0021] Furthermore, a guide plate is fixedly connected to the bottom of the reaction vessel, and the rotating rod is rotatably connected inside the guide plate.

[0022] Furthermore, an exhaust port is fixedly connected to the top of the reaction vessel, and a liquid outlet is fixedly connected to the bottom right side of the reaction vessel. Valves are installed on the outside of both the exhaust port and the liquid outlet, and a support leg is fixedly connected to the bottom of the shell.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when cleaning the filter plate, pulling the pull rod moves the slider and the insert block, compresses the spring, and causes the insert block to disengage from the slot, so that the filter plate can be removed. When installing, after inserting the filter plate, releasing the pull rod will reset the spring and cause the insert block to engage with the slot, thus completing the installation. This design facilitates the disassembly and cleaning of the filter plate, avoids clogging of the filter holes, and improves the preparation efficiency.

[0025] 2. In this utility model, the starting motor drives the driving wheel, belt and driven wheel to rotate, causing the rotating rod and connecting rod to rotate. At the same time, the scraper rotates along the inner wall of the reaction tank to scrape off the attached impurities. This design facilitates cleaning of the inner wall, avoids cross-contamination, and ensures production purity and product consistency. Attached Figure Description

[0026] Figure 1 This is a perspective view of a concentration apparatus for preparing dipropylene glycol methyl ether acetate according to the present invention.

[0027] Figure 2 This is a schematic diagram of the air inlet structure of a concentration device for preparing dipropylene glycol methyl ether acetate according to the present invention.

[0028] Figure 3 This is a schematic diagram of the internal structure of the insulated box of a concentration device for preparing dipropylene glycol methyl ether acetate according to the present invention.

[0029] Figure 4 This is a schematic diagram of the internal structure of the reaction vessel of a concentration device for preparing dipropylene glycol methyl ether acetate according to the present invention.

[0030] Figure 5 This is a schematic diagram of the filter plate disassembled structure of a concentration device for preparing dipropylene glycol methyl ether acetate according to the present invention.

[0031] Figure 6 for Figure 3 Enlarged view of the structure at point A in the middle.

[0032] Legend:

[0033] 1. Support leg; 2. Shell; 3. Reaction vessel; 4. Exhaust port; 5. Liquid outlet; 6. Filter plate; 7. Liquid inlet pipe; 8. Spray pipe; 9. Mounting rod; 10. Fan; 11. Air inlet pipe; 12. Air outlet pipe; 13. Mounting cavity; 14. Fixing rod; 15. Slider; 16. Insert block; 17. Through hole one; 18. Through hole two; 19. Slot; 20. Spring; 21. Mounting ring; 22. Motor; 23. Drive wheel; 24. Belt; 25. Driven wheel; 26. Rotating rod; 27. Connecting rod; 28. Scraper; 29. ​​Guide plate; 30. Pull rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-5 This utility model provides an embodiment of a concentration device for preparing dipropylene glycol methyl ether acetate, comprising: a shell 2; a reaction vessel 3, which is fixedly connected inside the shell 2; a filter plate 6, which is inserted into the shell 2 and the reaction vessel 3; a mounting cavity 13, which is opened on the rear side of the interior of the shell 2; a fixing rod 14 and a slider 15, wherein the fixing rod 14 is fixedly connected inside the mounting cavity 13 and the slider 15 is slidably connected to the outside of the fixing rod 14; a pull rod 30 and an insert block 16, wherein the pull rod 30 is fixedly connected to the front side of the outside of the slider 15 and the insert block 16 is fixedly connected to the slider. The outer rear side of 15; spring 20, spring 20 is sleeved on the outside of fixed rod 14; and scraping assembly, scraping assembly is used to scrape off impurities attached to the inner wall of reaction vessel 3. The shell 2 has a through hole 17 inside, and the insert block 16 is slidably connected to the inside of the through hole 17. The through hole 17 facilitates the movement of the insert block 16. The shell 2 has a through hole 28 outside, and the pull rod 30 is slidably connected to the inside of the through hole 28. The through hole 28 facilitates the movement of the pull rod 30. The filter plate 6 has a slot 19 outside, and the insert block 16 is inserted into the slot 19 to facilitate the fixing of the filter plate 6.

[0036] Specifically, when cleaning the filter plate 6, first, pull the lever 30. During the pulling process, the lever 30 will cause the slider 15, which is fixedly connected to its bottom, to slide along the outside of the fixed rod 14. As the slider 15 moves, the insert 16 fixed on its right side will also move synchronously. During the outward movement of the slider 15, since the fixed rod 14 is fitted with a spring 20, the movement of the slider 15 will apply pressure to the spring 20, causing the spring 20 to be compressed and deformed, storing elastic energy. As the slider 15 continues to move, the insert 16 gradually disengages from the slot 19 inside the filter plate 6. When the insert 16 is completely out of the slot 19, the unlocking is completed. In this operation, the filter plate 6 can be easily pulled out from the inside of the shell 2 and the reaction vessel 3. After the filter plate 6 is disassembled, its surface and filter holes can be thoroughly cleaned to remove accumulated impurities and blockages. After cleaning, simply reinsert the filter plate 6 into the inside of the shell 2 and the reaction vessel 3. Then, release the pull rod 30. Under the elastic restoring force of the spring 20, the slider 15 automatically returns to its original position, and at the same time, it drives the insert block 16 to reset and insert into the slot 19, thus realizing the stable installation of the filter plate 6. This facilitates the disassembly and cleaning of the filter plate 6 and improves the preparation efficiency of dipropylene glycol methyl ether acetate in the reaction vessel 3 by avoiding the problem of filter hole blockage caused by impurity accumulation.

[0037] Reference Figures 2-6 The scraping assembly includes a motor 22, which is located on the bottom left side of the housing 2. A drive wheel 23 is fixedly connected to the output end of the motor 22. A rotating rod 26 is rotatably connected inside the reaction vessel 3. A driven wheel 25 is fixedly connected to the bottom of the rotating rod 26. The drive wheel 23 is connected to the driven wheel 25 via a belt 24. Connecting rods 27 are fixedly connected to both sides of the rotating rod 26. Scrapers 28 are fixedly connected to the outside of both connecting rods 27. The scrapers 28 facilitate the scraping of impurities adhering to the inner wall of the reaction vessel 3. The scrapers 28 fit against the inner wall of the reaction vessel 3. A mounting ring 21 is fixedly connected to the bottom left side of the housing 2. The motor 22 is fixedly connected to the outside of the mounting ring 21. The mounting ring 21 facilitates the fixing of the motor 22.

[0038] Specifically, during the maintenance of reaction vessel 3, firstly, the motor 22 is started. After the motor 22 starts, the drive wheel 23 fixed at its output end begins to rotate. The rotation of the drive wheel 23 transmits power through the connected belt 24, causing the belt 24 to rotate synchronously, which in turn drives the driven wheel 25 connected to it to start rotating. As the driven wheel 25 rotates, the rotating rod 26 fixed inside it rotates accordingly. The rotation of the rotating rod 26 drives the connecting rods 27 fixed on both sides of the outside to rotate simultaneously. The connecting rods 27 drive the externally fixed scraper 28 to rotate, causing the scraper 28 to adhere to and move along the inner wall of the reaction vessel 3. This allows for continuous scraping of residual material impurities on the vessel wall, thereby removing various attached impurities, including reaction residues, crystals, or adhered by-products, avoiding cross-contamination, and ensuring the purity of the production process and the consistency of the product.

[0039] Reference Figures 1-3 A liquid inlet pipe 7 is fixedly connected to the left side of the interior of the shell 2 and the reaction vessel 3. A spray pipe 8 is fixedly connected to the bottom of the liquid inlet pipe 7. The spray pipe 8 is located inside the reaction vessel 3. An installation rod 9 is fixedly connected to the right side of the exterior of the spray pipe 8. The bottom of the installation rod 9 is fixedly connected to the right side of the interior of the reaction vessel 3. A blower 10 is fixedly connected to the right side of the exterior of the shell 2 and the reaction vessel 3. An air inlet pipe 11 is fixedly connected to the input end of the blower 10. An exhaust pipe 12 is fixedly connected to the output end of the blower 10. The exhaust pipe 12 is fixedly connected to the interior of the reaction vessel 3. A guide is fixedly connected to the bottom of the reaction vessel 3. The guide plate 29 is used to guide the flow of the prepared liquid. The rotating rod 26 is rotatably connected inside the guide plate 29. The top of the reaction vessel 3 is fixedly connected to the exhaust port 4 to facilitate the discharge of excess gas inside the vessel. The bottom right side of the reaction vessel 3 is fixedly connected to the liquid outlet 5 to facilitate the discharge of the prepared liquid. Valves are installed on the outside of both the exhaust port 4 and the liquid outlet 5. The bottom of the shell 2 is fixedly connected to the support leg 1 to facilitate the fixation and support of the shell 2 and the reaction vessel 3.

[0040] Specifically, during preparation, firstly, dipropylene glycol methyl ether acetate is pumped out of the storage tank by a water pump and transported to the inside of the spray pipe 8 through the inlet pipe 7. Then, it is sprayed into the inside of the reaction tank 3 through the spray pipe 8. The liquid falls onto the filter plate 6 for filtration and distribution. Subsequently, hot air is introduced into the tank by the blower 10 to contact the sprayed liquid and evaporate the water, thereby achieving concentration. Finally, the concentrated product is discharged from the outlet 5.

[0041] Working principle: When the filter plate 6 needs to be cleaned, firstly, pull the lever 30 to move the bottom-fixed slider 15 outside the fixed rod 14. When the slider 15 moves, it moves the external right-side fixed insert 16 synchronously. At the same time, when the slider 15 moves, it squeezes the spring 20 sleeved on the outside of the fixed rod 14, causing the spring 20 to deform under force. Then, when the insert 16 disengages from the inside of the slot 19, the filter plate 6 can be removed from the inside of the shell 2 and the reaction vessel 3 for cleaning. During installation, the filter plate 6 is inserted into the inside of the shell 2 and the reaction vessel 3. Then, the lever 30 is released. Under the reaction force of the spring 20, the insert 16 is reset and inserted into the inside of the slot 19, thus completing the installation of the filter plate 6. This facilitates the disassembly and cleaning of the filter plate 6 installed inside the reaction vessel 3, avoids impurities clogging the filter holes, and thus improves the preparation efficiency of dipropylene glycol methyl ether acetate.

[0042] When scraping off impurities adhering to the inner wall of reaction vessel 3, firstly, motor 22 is started. Motor 22 drives the drive wheel 23 fixed at the output end to rotate. The rotation of drive wheel 23 drives driven wheel 25 to rotate via belt 24. The rotation of driven wheel 25 drives the internally fixed rotating rod 26 to rotate. The rotation of rotating rod 26 drives the externally fixed connecting rods 27 to rotate. At the same time, when the connecting rods 27 rotate, they drive the externally fixed scraper 28 to rotate on the inner wall of reaction vessel 3. The rotation of scraper 28 can scrape off the impurities adhering to the inner wall of reaction vessel 3, which facilitates the removal of impurities adhering to the inner wall of reaction vessel 3, avoids cross-contamination, and thus ensures the purity of the production process and the consistency of the product.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concentration apparatus for preparing dipropylene glycol methyl ether acetate, characterized in that, include: Shell (2); The reaction vessel (3) is fixedly connected inside the shell (2); A filter plate (6) is inserted into the interior of the shell (2) and the reaction vessel (3); The mounting cavity (13) is formed on the rear side of the interior of the housing (2); A fixed rod (14) and a slider (15) are provided, wherein the fixed rod (14) is fixedly connected inside the mounting cavity (13), and the slider (15) is slidably connected outside the fixed rod (14); A pull rod (30) and a plug (16), wherein the pull rod (30) is fixedly connected to the front side of the slider (15) and the plug (16) is fixedly connected to the rear side of the slider (15); A spring (20) is sleeved on the outside of the fixed rod (14); And a scraping assembly for scraping off impurities adhering to the inner wall of the reaction vessel (3).

2. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 1, characterized in that: The scraping assembly includes a motor (22), which is located on the bottom left side of the housing (2). The output end of the motor (22) is fixedly connected to a drive wheel (23). A rotating rod (26) is rotatably connected inside the reaction vessel (3). A driven wheel (25) is fixedly connected to the bottom of the rotating rod (26). The drive wheel (23) is connected to the driven wheel (25) via a belt (24). Connecting rods (27) are fixedly connected to both sides of the rotating rod (26). Scrapers (28) are fixedly connected to the outside of both connecting rods (27). The scrapers (28) are in contact with the inner wall of the reaction vessel (3).

3. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 1, characterized in that: The housing (2) has a through hole 1 (17) inside, the insert (16) is slidably connected inside the through hole 1 (17), the housing (2) has a through hole 2 (18) outside, the pull rod (30) is slidably connected inside the through hole 2 (18), the filter plate (6) has a slot (19) outside, and the insert (16) is inserted into the slot (19).

4. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 2, characterized in that: A mounting ring (21) is fixedly connected to the bottom left side of the housing (2), and the motor (22) is fixedly connected to the outside of the mounting ring (21).

5. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 1, characterized in that: An inlet pipe (7) is fixedly connected to the left side of the shell (2) and the reaction vessel (3). A spray pipe (8) is fixedly connected to the bottom of the inlet pipe (7). The spray pipe (8) is located inside the reaction vessel (3). An installation rod (9) is fixedly connected to the right side of the outside of the spray pipe (8). The bottom of the installation rod (9) is fixedly connected to the right side of the inside of the reaction vessel (3).

6. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 1, characterized in that: A fan (10) is fixedly connected to the outside right side of the shell (2) and the reaction vessel (3). An air inlet pipe (11) is fixedly connected to the input end of the fan (10), and an exhaust pipe (12) is fixedly connected to the output end of the fan (10). The exhaust pipe (12) is fixedly connected to the inside of the reaction vessel (3).

7. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 2, characterized in that: The bottom of the reaction vessel (3) is fixedly connected to a guide plate (29), and the rotating rod (26) is rotatably connected inside the guide plate (29).

8. The concentration apparatus for preparing dipropylene glycol methyl ether acetate according to claim 1, characterized in that: The top of the reaction vessel (3) is fixedly connected to an exhaust port (4), and the bottom right side of the reaction vessel (3) is fixedly connected to an outlet (5). Valves are installed on the outside of both the exhaust port (4) and the outlet (5). The bottom of the shell (2) is fixedly connected to a support leg (1).

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