Vacuum filter cartridge mounting structure for vacuum dryer

Abstract

The utility model relates to the technical field of drying equipment, and discloses a vacuum filter cartridge mounting structure for a vacuum dryer, which comprises a rack and a dryer positioned at the top of the rack, a vacuumizing opening is formed in the center of the top of the dryer, and a groove I is formed in one end, far away from the dryer, of the vacuumizing opening. A fixing frame is arranged on the side, away from the drying machine, of the vacuumizing opening. According to the vacuum filter cartridge installation structure for the vacuum dryer, through the design that the clamping block and the first groove are installed in an inserted mode, the fixing frame can be rapidly positioned and installed at the top of a vacuumizing opening, then through the design of the first limiting block, when a filter cartridge assembly is installed, the first limiting block can be clamped into the second groove firstly, then the first limiting block is rotated to rotate in the sliding groove, and then the first limiting block is clamped into the second groove; and through the design that the second limiting block is matched with the top cover, when the sealing cover and the sealing cover are closed, the top cover is just clamped into the second limiting block, and therefore the effect of limiting the filter cartridge assembly is achieved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically to a vacuum filter cartridge mounting structure for a vacuum dryer. Background Technology

[0002] A vacuum dryer, as the name suggests, is a device for drying materials in a vacuum environment. Its working principle is mainly based on the phase change principle of water, that is, using reduced air pressure to lower the boiling point of water, thereby achieving rapid evaporation of moisture from the material at a lower temperature. In the vacuum drying process, the material to be dried is first placed in the drying chamber of the vacuum dryer, then the drying chamber is closed, and a vacuum pump is started to extract air from the drying chamber, creating a certain degree of vacuum. Under vacuum conditions, the boiling point of water is greatly reduced, and the moisture in the material evaporates rapidly at a lower temperature. Simultaneously, the drying chamber is heated by a heating system, increasing the surface temperature of the material and further accelerating moisture evaporation. The evaporated water vapor is promptly discharged from the drying chamber by the vacuum pump, thus maintaining a low-humidity environment inside the drying chamber and achieving rapid drying of the material. However, existing vacuum dryers have the vacuum extraction port located inside the dryer cylinder. Moist powder easily clogs the extraction port, preventing timely discharge of air and water vapor, extending production time, and the filter bags installed outside the extraction port are inconvenient to replace.

[0003] Chinese Utility Model Patent Publication No. CN 207881359 U discloses a vacuum filter cartridge for a vacuum rake dryer. This vacuum filter cartridge is directly installed on the top of the vacuum rake dryer using a flange, which is convenient for installation. The vacuum pipe is higher than the cylinder of the vacuum rake dryer, which is not easy to clog. The vacuum effect is good and the production efficiency is high. However, this vacuum filter cartridge for a vacuum rake dryer does not have a detachable installation. When the filter cartridge needs to be maintained, the entire vacuum filter cartridge needs to be removed, which is a cumbersome process and has low practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a vacuum filter cartridge mounting structure for a vacuum dryer, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a vacuum filter cartridge installation structure for a vacuum dryer, including a frame and a dryer located at the top of the frame. A vacuum port is provided at the center of the top of the dryer. A groove is provided at the end of the vacuum port away from the dryer. A fixing frame is provided on the side of the vacuum port away from the dryer. A locking block is fixedly installed on the outer side of the fixing frame. A locking screw is provided on the side of the locking block away from the vacuum port. A groove, a sliding groove, and a groove are provided on the inner side of the fixing frame. A sealing strip is provided on the side of the fixing frame near the vacuum port. A filter cartridge assembly is provided on the side of the fixing frame away from the vacuum port. A sealing cover is provided on the side of the vacuum port away from the dryer. A sealing cap is provided on the top of the sealing cover. A limit block and a protrusion are fixedly installed on the side of the sealing cap near the filter cartridge assembly. A sealing strip is provided on the outer side of the protrusion.

[0006] The filter cartridge assembly includes a connecting seat, a limiting block 1, a filter hole, a sealing strip 2, a filter element, and a top cover. The connecting seat is provided on the top of the fixing frame. The limiting block 1 is fixedly installed on the outer side of the connecting seat. The filter hole is opened on the outer surface of the connecting seat. The sealing strip 2 is provided on the outer side of the fixing frame away from the limiting block 1. The filter element is fixedly connected to the top center of the connecting seat. The top cover is fixedly installed on the top of the filter element.

[0007] Preferably, a support base is fixedly installed on the top of the frame, a motor is fixedly installed on the side of the frame near the tail of the dryer, a reducer is fixedly connected to the frame directly above the motor, a transmission belt is provided between the motor and the reducer, a rotating shaft is provided between the reducer and the dryer, a cover is provided at the end of the dryer away from the reducer, a bearing seat is provided at the end of the cover away from the dryer and rotatably connected to the rotating shaft, a fixed base is fixedly installed at the bottom of the bearing seat, a feed inlet is provided on the top of the dryer near the cover, a steam inlet is provided on the top of the dryer away from the vacuum port, a discharge port is provided at the center of the bottom of the dryer, a steam outlet is provided on the bottom of the dryer away from the discharge port, a fixing block one is fixedly installed on the outside of the sealing cover, a fixing block two is fixedly installed on the outside of the sealing cover, a locking screw two is provided on the side of the fixing block one away from the fixing block two, and an air extraction port and an air outlet are respectively opened on the outside of the sealing cover, the air extraction port and the air outlet are symmetrically distributed on the center line of the sealing cover.

[0008] The above technical solution ensures the stability of the equipment during operation by setting up a frame and support base. The combined design of the motor and reducer achieves efficient power transmission, meeting the operating requirements of the dryer. The sealing cover and sealing cap ensure the airtightness of the dryer, making it suitable for vacuum drying processes. During use, the operator pours the material to be dried into the feed port. With the cooperation of the rotating shaft, the material is fully stirred in the dryer. Steam is then added from the steam inlet to heat the material being dried, causing the solvent in the material to vaporize rapidly. The resulting condensate is discharged from the steam outlet, and the dried material is taken out from the discharge port.

[0009] Preferably, the first groove and the card block are provided in four identical sets, and the four sets of the first groove and the card block are symmetrically distributed on the center line of the vacuum port. The card block and the first groove are plugged in and installed.

[0010] The above technical solution, by setting the card block and groove as a plug-in installation design, allows the fixing bracket to be quickly positioned and installed on the top of the vacuum port, and then fixed to the vacuum port by the locking screw, which improves the installation efficiency and facilitates quick disassembly later.

[0011] Preferably, the first limiting block is the same size as the second and third grooves, and the first limiting block is slidably connected to the slide groove.

[0012] Through the above technical solution, by designing the limiting block one, when installing the filter cartridge assembly, the limiting block one can be first inserted into the groove two, and then the limiting block one can be rotated in the slide groove and then reach the groove three, which can limit the filter cartridge assembly and facilitate the quick assembly and disassembly of the filter cartridge assembly, improving installation efficiency while reducing installation difficulty.

[0013] Preferably, the limiting block two is adapted to the top cover, the outer diameter of the protrusion is the same as the inner diameter of the sealing cover, and three sets of sealing strips three are equally spaced on the outer surface of the protrusion.

[0014] Through the above technical solution, by adapting the limiting block two to the top cover, when the sealing cover and the sealing shroud are closed, the top cover just fits into the limiting block two, thereby limiting the filter cartridge assembly and enhancing the stability of the filter cartridge assembly during operation. By having the outer diameter of the convex strip the same as the inner diameter of the sealing shroud and having three sets of sealing strips three evenly spaced on the outer surface of the convex strip, the sealing effect of the sealing cover and the sealing shroud is improved. Then, by locking screw two, fixing block one and fixing block two are quickly fixed, thereby improving the installation efficiency of the sealing cover and the sealing shroud.

[0015] Preferably, the filter holes are provided in multiple identical sets, and the multiple sets of filter holes are distributed in a ring at equal distances on the surface of the connecting seat.

[0016] The above technical solution improves the filtration efficiency of the device by setting multiple sets of filter holes.

[0017] Preferably, the filter element is made of stainless steel, and the interior of the filter element is connected to the vacuum port.

[0018] Through the above technical solutions, stainless steel filter elements have the advantages of high temperature resistance, corrosion resistance, high strength and easy cleaning, thereby improving the service life of the filter elements.

[0019] Compared with the prior art, this utility model provides a vacuum filter cartridge mounting structure for a vacuum dryer, which has the following advantages:

[0020] 1. The vacuum dryer uses a vacuum filter cartridge installation structure. By setting a snap-fit ​​design between the clip and the first groove, the fixing frame can be quickly positioned and installed on the top of the vacuum port. Then, through the design of the first limiting block, when installing the filter cartridge assembly, the first limiting block can be snapped into the second groove, and then rotated in the sliding groove to reach the third groove, which can limit the filter cartridge assembly. At the same time, the fixing frame can support the filter cartridge assembly. When the filter cartridge assembly needs to be maintained, simply rotate the first limiting block to the second groove and then remove the filter cartridge assembly, which can improve the work efficiency of maintenance personnel.

[0021] 2. The vacuum dryer uses a vacuum filter cartridge installation structure. Through the design of the limiting block two matching the top cover, when the sealing cover and sealing shroud are closed, the top cover just fits into the limiting block two, thereby limiting the filter cartridge assembly and enhancing the stability of the filter cartridge assembly during the operation of the device. The outer diameter of the convex strip is the same as the inner diameter of the sealing shroud, and three sets of sealing strips three are set at equal intervals on the outer surface of the convex strip, which improves the sealing effect of the sealing cover and sealing shroud. Then, the fixing block one and fixing block two are quickly fixed by the locking screw two, thereby improving the installation efficiency of the sealing cover and sealing shroud. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the filter cartridge assembly and the fixing frame of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection structure between the fixing frame and the vacuum port of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation structure of the filter cartridge assembly and the fixing frame of this utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the sealing cover and sealing cap of this utility model;

[0027] Figure 6 This is a cross-sectional structural diagram of the sealing cap of this utility model;

[0028] Figure 7 This is a schematic diagram of the filter cartridge assembly of this utility model.

[0029] The components include: 1. Frame; 2. Support base; 3. Dryer; 4. Motor; 5. Reducer; 6. Drive belt; 7. Shaft; 8. Cover; 9. Bearing housing; 10. Fixed base; 11. Feed inlet; 12. Steam inlet; 13. Steam outlet; 14. Discharge outlet; 15. Vacuum port; 16. Groove one; 17. Fixed frame; 18. Clamping block; 19. Locking screw one; 20. Groove two; 21. Slide groove; 22. Groove. 3; 23. Sealing strip one; 24. Filter cartridge assembly; 2401. Connecting seat; 2402. Limiting block one; 2403. Filter hole; 2404. Sealing strip two; 2405. Filter element; 2406. Top cover; 25. Sealing cover; 26. Sealing cap; 27. Limiting block two; 28. Raised strip; 29. ​​Sealing strip three; 30. Fixing block one; 31. Fixing block two; 32. Locking screw two; 33. Air extraction port; 34. Air outlet. Detailed Implementation

[0030] 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.

[0031] Example 1: As Figure 1-7 As shown, the present invention provides a vacuum filter cartridge mounting structure for a vacuum dryer, including a frame 1 and a dryer 3 located at the top of the frame 1. A vacuum port 15 is centrally located at the top of the dryer 3. A groove 16 is formed at the end of the vacuum port 15 furthest from the dryer 3. A fixing bracket 17 is provided on the side of the vacuum port 15 furthest from the dryer 3. A locking block 18 is fixedly installed on the outer side of the fixing bracket 17. A locking screw 19 is provided on the side of the locking block 18 furthest from the vacuum port 15. The inner side is provided with groove 20, slide 21 and groove 3 22. A sealing strip 23 is provided on the side of the fixing frame 17 near the vacuum port 15. A filter cartridge assembly 24 is provided on the side of the fixing frame 17 away from the vacuum port 15. A sealing cover 25 is provided on the side of the vacuum port 15 away from the dryer 3. A sealing cap 26 is provided on the top of the sealing cover 25. A limit block 27 and a protrusion 28 are fixedly installed on the side of the sealing cap 26 near the filter cartridge assembly 24. A sealing strip 3 29 is provided on the outer side of the protrusion 28.

[0032] The filter cartridge assembly 24 includes a connecting seat 2401, a limiting block 2402, a filter hole 2403, a sealing strip 2404, a filter element 2405, and a top cover 2406. The connecting seat 2401 is provided on the top of the fixing frame 17. The limiting block 2402 is fixedly installed on the outer side of the connecting seat 2401. The filter hole 2403 is opened on the outer surface of the connecting seat 2401. The sealing strip 2404 is provided on the outer side of the fixing frame 17 away from the limiting block 2402. The filter element 2405 is fixedly connected to the center of the top of the connecting seat 2401. The top cover 2406 is fixedly installed on the top of the filter element 2405.

[0033] Specifically, a support base 2 is fixedly installed on the top of the frame 1. A motor 4 is fixedly installed on the side of the frame 1 near the tail of the dryer 3. A reducer 5, which is fixedly connected to the frame 1, is located directly above the motor 4. A transmission belt 6 is installed between the motor 4 and the reducer 5. A rotating shaft 7 is installed between the reducer 5 and the dryer 3. A cover 8 is installed at the end of the dryer 3 away from the reducer 5. A bearing seat 9, which is rotatably connected to the rotating shaft 7, is installed at the end of the cover 8 away from the dryer 3. A fixing seat 10 is fixedly installed at the bottom of the bearing seat 9. A feed inlet 11 is located on the top of the dryer 3 near the cover 8. A steam inlet 12 is located on the top of the dryer 3 away from the vacuum port 15. A discharge port 14 is located at the center of the bottom of the dryer 3. A steam outlet 13 is located on the bottom of the dryer 3 away from the discharge port 14. A fixing block 30 is fixedly installed on the outside of the sealing cover 26. A fixing block 31 is fixedly installed on the outside of the sealing cover 25. A locking screw 32 is provided on the side of block 30 away from the fixed block 31. An air extraction port 33 and an air outlet 34 are respectively opened on the outer side of the sealing cover 25. The air extraction port 33 and the air outlet 34 are symmetrically distributed on the center line of the sealing cover 25. The advantage is that by setting the frame 1 and the support base 2, the stability of the equipment during operation is ensured. The combination design of motor 4 and reducer 5 realizes efficient power transmission and meets the operation requirements of dryer 3. By setting the sealing cover 25 and the sealing cover 26, the sealing performance of dryer 3 is ensured, which is suitable for vacuum drying process requirements. During use, the operator pours the material to be dried into the feed port 11. With the cooperation of the rotating shaft 7, the material is fully stirred in dryer 3. Steam is added from steam inlet 12 to heat the material to be dried, so that the solvent in the material is rapidly vaporized. The generated condensate is discharged from steam outlet 13. The dried material is taken out from discharge port 14.

[0034] Specifically, four identical sets of groove 16 and locking blocks 18 are provided. The four sets of groove 16 and locking blocks 18 are symmetrically distributed on the center line of the vacuum port 15. The locking blocks 18 and groove 16 are plugged in for installation. The advantage is that by setting the locking blocks 18 and groove 16 to be plugged in for installation, the fixing bracket 17 can be quickly positioned and installed on the top of the vacuum port 15, and then fixed to the vacuum port 15 by locking screw 19, which improves the installation efficiency and facilitates quick disassembly later.

[0035] Specifically, the limiting block 2402 is the same size as the groove 20 and the groove 3 22. The limiting block 2402 is slidably connected to the slide 21. The advantage is that, through the design of the limiting block 2402, when installing the filter cartridge assembly 24, the limiting block 2402 can be first inserted into the groove 20, and then rotated in the slide 21 to reach the groove 3 22. This can limit the filter cartridge assembly 24 and facilitate the quick assembly and disassembly of the filter cartridge assembly 24, improving installation efficiency while reducing installation difficulty.

[0036] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0037] Specifically, the limiting block 27 is adapted to the top cover 2406, the outer diameter of the protrusion 28 is the same as the inner diameter of the sealing cover 25, and three sets of sealing strips 29 are evenly arranged on the outer surface of the protrusion 28. The advantage is that, through the design of the limiting block 27 adapting to the top cover 2406, when the sealing cover 26 and the sealing cover 25 are closed, the top cover 2406 is just inserted into the limiting block 27, thereby limiting the filter cartridge assembly 24 and enhancing the stability of the filter cartridge assembly 24 during the operation of the device. By having the outer diameter of the protrusion 28 be the same as the inner diameter of the sealing cover 25 and having three sets of sealing strips 29 evenly arranged on the outer surface of the protrusion 28, the sealing effect of the sealing cover 26 and the sealing cover 25 is improved. Then, the fixing block 30 and the fixing block 31 are quickly fixed by the locking screw 32, thereby improving the installation efficiency of the sealing cover 26 and the sealing cover 25.

[0038] Specifically, the filter holes 2403 are provided in multiple sets, and the multiple sets of filter holes 2403 are located on the surface of the connecting seat 2401 and are distributed in a ring at equal distances. The advantage is that by providing multiple sets of filter holes 2403, the filtration efficiency of the device is improved.

[0039] Specifically, filter element 2405 is made of stainless steel. The interior of filter element 2405 is connected to the vacuum port 15. The advantages of stainless steel filter element 2405 are that it is resistant to high temperature and corrosion, has high strength and is easy to clean, thereby improving the service life of filter element 2405.

[0040] Working Principle: During operation, the operator pours the material to be dried into the dryer 3 through the feed inlet 11, then starts the motor 4. The combination of the motor 4 and the reducer 5 ensures efficient power transmission, meeting the operating requirements of the dryer 3. Through the cooperation of the rotating shaft 7 and the reducer 5, the material is thoroughly stirred within the dryer 3. Then, a heating medium is added through the steam inlet 12 to heat the inner wall of the dryer 3 and the material, causing the solvent within the material to rapidly vaporize. Finally, the vapor is extracted through the vacuum pump connected to the extraction port 33. The air exiting the dryer 3 is connected to the filter cartridge assembly 24 via a plug-in design using a locking block 18 and a groove 16. This allows for quick positioning and installation of the mounting bracket 17 on top of the vacuum port 15. It is then secured to the vacuum port 15 with a locking screw 19, improving installation efficiency and facilitating rapid disassembly. Furthermore, the design of the limiting block 2402 allows for easy insertion of the limiting block 2402 into the groove 20 during filter cartridge assembly 24 installation. The limiting block 2402 is then rotated within the sliding groove 21, eventually reaching the groove... In slot 22, the filter cartridge assembly 24 can be limited, and the quick assembly and disassembly of the filter cartridge assembly 24 can be facilitated, improving installation efficiency and reducing installation difficulty. Through the design of the limiting block 27 matching the top cover 2406, when the sealing cover 26 and the sealing shield 25 are closed, the top cover 2406 fits perfectly into the limiting block 27, thus limiting the filter cartridge assembly 24 and enhancing the stability of the filter cartridge assembly 24 during operation. This is achieved by the outer diameter of the protrusion 28 being the same as the inner diameter of the sealing shield 25. Three sets of sealing strips 29 are evenly spaced on the outer surface of the protruding strip 28, which improves the sealing effect of the sealing cover 26 and the sealing cover 25. Then, the fixing block 30 and the fixing block 31 are quickly fixed by the locking screw 32, thereby improving the installation efficiency of the sealing cover 26 and the sealing cover 25. Multiple sets of filter holes 2403 are arranged in a ring on the surface of the connecting seat 2401, which effectively improves the filtration efficiency of the filter cartridge assembly 24. The sealing effect of the device is improved by setting the sealing strip 23 and the sealing strip 2404.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum filter cartridge mounting structure for a vacuum dryer, comprising a frame (1) and a dryer (3) located on top of the frame (1), characterized in that: The dryer (3) has a vacuum port (15) located at the center of its top. A groove (16) is formed at the end of the vacuum port (15) away from the dryer (3). A mounting bracket (17) is provided on the side of the vacuum port (15) away from the dryer (3). A locking block (18) is fixedly installed on the outer side of the mounting bracket (17). A locking screw (19) is provided on the side of the locking block (18) away from the vacuum port (15). A groove (20), a sliding groove (21), and a groove (22) are formed on the inner side of the mounting bracket (17). A sealing strip (23) is provided on the side of the fixed frame (17) near the vacuum port (15). A filter cartridge assembly (24) is provided on the side of the fixed frame (17) away from the vacuum port (15). A sealing cover (25) is provided on the side of the vacuum port (15) away from the dryer (3). A sealing cover (26) is provided on the top of the sealing cover (25). A limit block (27) and a protrusion (28) are fixedly installed on the side of the sealing cover (26) near the filter cartridge assembly (24). A sealing strip (29) is provided on the outside of the protrusion (28). The filter cartridge assembly (24) includes a connecting seat (2401), a limiting block (2402), a filter hole (2403), a sealing strip (2404), a filter element (2405), and a top cover (2406). The top of the fixing frame (17) is provided with a connecting seat (2401). The limiting block (2402) is fixedly installed on the outer side of the connecting seat (2401). The outer surface of the connecting seat (2401) is provided with a filter hole (2403). The sealing strip (2404) is provided on the outer side of the fixing frame (17) away from the limiting block (2402). The filter element (2405) is fixedly connected to the top of the connecting seat (2401) at the center position. The top cover (2406) is fixedly installed on the top of the filter element (2405).

2. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 1, characterized in that: A support base (2) is fixedly installed on the top of the frame (1). A motor (4) is fixedly installed on the side of the frame (1) near the tail of the dryer (3). A reducer (5) is fixedly connected to the frame (1) directly above the motor (4). A transmission belt (6) is provided between the motor (4) and the reducer (5). A rotating shaft (7) is provided between the reducer (5) and the dryer (3). A cover (8) is provided at the end of the dryer (3) away from the reducer (5). A bearing seat (9) is provided at the end of the cover (8) away from the dryer (3) and is rotatably connected to the rotating shaft (7). A fixing seat (10) is fixedly installed at the bottom of the bearing seat (9). A feed inlet is provided on the top of the dryer (3) near the cover (8). (11) A steam inlet (12) is provided on the top of the dryer (3) away from the vacuum port (15). A discharge port (14) is provided at the center of the bottom of the dryer (3). A steam outlet (13) is provided on the bottom of the dryer (3) away from the discharge port (14). A fixing block one (30) is fixedly installed on the outside of the sealing cover (26). A fixing block two (31) is fixedly installed on the outside of the sealing cover (25). A locking screw two (32) is provided on the side of the fixing block one (30) away from the fixing block two (31). An air extraction port (33) and an air outlet (34) are respectively opened on the outside of the sealing cover (25). The air extraction port (33) and the air outlet (34) are symmetrically distributed on the center line of the sealing cover (25).

3. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 2, characterized in that: The first groove (16) and the card block (18) are provided with four identical sets. The four sets of the first groove (16) and the card block (18) are symmetrically distributed on the center line of the vacuum port (15). The card block (18) and the first groove (16) are plugged in.

4. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 3, characterized in that: The limiting block one (2402) is the same size as the groove two (20) and the groove three (22), and the limiting block one (2402) is slidably connected to the slide groove (21).

5. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 4, characterized in that: The limiting block 2 (27) is adapted to the top cover (2406), the outer diameter of the protrusion (28) is the same as the inner diameter of the sealing cover (25), and three sets of sealing strips 3 (29) are provided at equal intervals on the outer surface of the protrusion (28).

6. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 5, characterized in that: The filter holes (2403) are provided in multiple identical sets, and the multiple sets of filter holes (2403) are located on the surface of the connecting seat (2401) in a ring-shaped distribution at equal distances.

7. The vacuum filter cartridge mounting structure for a vacuum dryer according to claim 6, characterized in that: The filter element (2405) is made of stainless steel, and the interior of the filter element (2405) is connected to the vacuum port (15).

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