Acid and alkali resistant vacuum dryer

Abstract

The utility model discloses an acid and alkali resistant vacuum dryer, and relates to the technical field of dryers. Comprising a drying machine body, a lower protective cover is arranged below the drying machine body, a motor speed reducer is arranged above the drying machine body, a vacuumizing opening, a feeding opening and a water inlet are formed in the upper portion of the drying machine body, a gradual change spiral shaft is arranged in the middle of the drying machine body, and a conical shell is connected to the lower portion of the drying machine body through bolts; a jacket is arranged outside the conical shell, a connector is fixedly connected to the lower end of the conical shell, and a liquid outlet is formed in the bottom of the lower shield; a blocking structure is formed between the drying machine body and the lower protective cover by arranging the filter plate and the filter cloth, a filtering effect on a mixture of materials and additives is achieved, the materials are blocked, the additives are filtered out, the structure is different from a common sintering net structure, and acid-base materials or the additives can be conveniently processed through the drying machine body.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to an acid and alkali resistant vacuum dryer. Background Art

[0002] The vacuum dryer heats and dries the dried material under vacuum conditions. It uses a vacuum machine to extract air and moisture, making the work in a vacuum state. The drying rate of the material is greatly accelerated, and energy is also saved. Therefore, the vacuum dryer is suitable for low-temperature drying of materials that are easy to decompose, polymerize and heat-sensitive under high temperature, and is widely used in the pharmaceutical, chemical, food, electronics and other industries.

[0003] In the prior art, a sintered mesh system and a drain port are provided at the bottom of the vacuum dryer to discharge additives, etc. However, the common sintered mesh is difficult to be treated for corrosion resistance and cannot be used for acidic and alkaline materials or additives. Utility Model Content

[0004] The utility model provides an acid and alkali resistant vacuum dryer to solve the problems in the background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an acid and alkali resistant vacuum dryer, comprising a dryer body, a lower protective cover is arranged below the dryer body;

[0006] A motor reducer is arranged above the dryer body, a vacuum port, a feed port and a water inlet are arranged above the dryer body, a gradual spiral shaft is arranged in the middle of the dryer body, a cone shell is connected to the bottom of the dryer body by bolts, a jacket is arranged outside the cone shell, and a connector is fixedly connected to the lower end of the cone shell;

[0007] A drain port is provided at the bottom of the lower shield, and a positioning platform is fixedly connected to the upper end of the lower shield. A positioning groove is provided on the inner wall of the positioning platform, and a filter plate is clamped inside the positioning groove. A clamping groove is provided on the upper surface of the filter plate, and a positioning frame is fixed inside the clamping groove by bolts, and a filter cloth is attached to the lower surface of the positioning frame.

[0008] Furthermore, the cone shell is nested outside the gradual spiral shaft, and a mechanical seal is provided between the cone shell and the dryer body.

[0009] Furthermore, the connecting head is connected to the lower shield via bolts, and a mechanical seal is provided between the lower shield and the connecting head.

[0010] Furthermore, the filter plate is arranged in a polygonal shape and is composed of a polytetrafluoroethylene perforated plate.

[0011] Furthermore, a flange is provided on the upper surface of the positioning platform close to the positioning groove, and the positioning platform is connected to the lower surface of the connector by snapping through the flange.

[0012] Furthermore, the lower surface of the positioning frame is provided with anti-slip grooves, the anti-slip grooves are opened on the inner side of the positioning frame, and the edge of the filter cloth is clamped between the positioning frame and the card slot.

[0013] Compared with the prior art, the utility model provides an acid and alkali resistant vacuum dryer, which has the following beneficial effects:

[0014] The acid- and alkali-resistant vacuum dryer forms a barrier structure between the dryer body and the lower shield by arranging a filter plate and a filter cloth, which filters the mixture of materials and additives, blocks the materials and filters out the additives. This is different from the common sintered mesh structure and facilitates the dryer body to process acidic and alkaline materials or additives. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle part;

[0017] Figure 3 It is a top view of the positioning platform of the utility model;

[0018] Figure 4 This is a bottom view of the positioning frame of the utility model.

[0019] In the figure: 1. dryer body; 11. motor reducer; 12. vacuum port; 13. feed port; 14. water inlet; 15. gradual spiral shaft; 16. cone shell; 17. jacket; 18. connector; 2. lower shield; 21. drain port; 22. positioning table; 23. positioning groove; 24. filter plate; 25. slot; 26. positioning frame; 27. filter cloth. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4The utility model discloses an acid- and alkali-resistant vacuum dryer, comprising a dryer body 1, a lower protective cover 2 is arranged below the dryer body 1; a motor reducer 11 is arranged above the dryer body 1, a vacuum port 12, a feed port 13 and a water inlet 14 are arranged above the dryer body 1, a gradually changing spiral shaft 15 is arranged in the middle of the dryer body 1, a cone shell 16 is connected to the lower part of the dryer body 1 by bolts, a jacket 17 is arranged outside the cone shell 16, and a connector 18 is fixedly connected to the lower end of the cone shell 16; a drain port 21 is arranged at the bottom of the lower protective cover 2, a positioning platform 22 is fixedly connected to the upper end of the lower protective cover 2, a positioning groove 23 is opened on the inner wall of the positioning platform 22, a filter plate 24 is clamped inside the positioning groove 23, a clamping groove 25 is opened on the upper surface of the filter plate 24, a positioning frame 26 is fixed inside the clamping groove 25 by bolts, and a filter cloth 27 is attached to the lower surface of the positioning frame 26.

[0022] Specifically, the cone shell 16 is nested outside the gradual spiral shaft 15, and a mechanical seal is provided between the cone shell 16 and the dryer body 1; the connector 18 is connected to the lower shield 2 by bolts, and a mechanical seal is provided between the lower shield 2 and the connector 18.

[0023] In this embodiment, the cone shell 16 is assembled below the dryer body 1, and the lower shield 2 is assembled below the cone shell 16, and the mechanical seal between the dryer body 1, the cone shell 16 and the lower shield 2 is cooperated to form a vacuum chamber structure.

[0024] Specifically, the filter plate 24 is arranged in a polygonal shape, and the filter plate 24 is composed of a polytetrafluoroethylene perforated plate.

[0025] In this embodiment, the filter plate 24 is configured as a polygon, which limits the angle of the filter plate 24 in the positioning groove 23 and reduces the shaking of the filter plate 24 when the dryer is working.

[0026] Specifically, a flange is provided on the upper surface of the positioning platform 22 close to the positioning groove 23 , and the positioning platform 22 is connected to the lower surface of the connector 18 by snapping together through the flange.

[0027] In this embodiment, when the lower shield 2 is combined and connected with the cone shell 16 , the flange on the upper surface of the positioning platform 22 and the connecting head 18 are mutually engaged to improve the sealing performance, while increasing the depth of the positioning groove 23 and improving the installation stability of the filter plate 24 .

[0028] Specifically, the lower surface of the positioning frame 26 is provided with anti-slip grooves, and the anti-slip grooves are opened inside the positioning frame 26 . The edge of the filter cloth 27 is clamped between the positioning frame 26 and the card slot 25 .

[0029] In this embodiment, when the positioning frame 26 is connected to the slot 25, the lower surface of the positioning frame 26 cooperates with the inner wall of the slot 25 to clamp the edge of the filter cloth 27 and fix the filter cloth 27, and cooperates with the anti-slip grooves on the lower surface of the positioning frame 26 to prevent the filter cloth 27 from falling out.

[0030] When in use, when the dryer body 1 is working, the material and additives are passed into the conical shell 16 through the feed port 13 and the water inlet 14, and are stirred and mixed through the motor reducer 11 and the gradual spiral shaft 15. After the processing is completed, the additives pass through the filter cloth 27 and the filter plate 24 into the lower shield 2, and are finally discharged from the drain port 21. The material stays in the conical shell 16, and is dried by passing a heat source into the jacket 17.

[0031] In summary, the acid- and alkali-resistant vacuum dryer forms a barrier structure between the dryer body 1 and the lower shield 2 by arranging the filter plate 24 and the filter cloth 27, which filters the mixture of materials and additives, blocks the materials and filters out the additives, which is different from the common sintered mesh structure and facilitates the dryer body 1 to process acidic and alkaline materials or additives.

[0032] 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. An acid and alkali resistant vacuum dryer, comprising a dryer body (1), characterized in that: A lower protective cover (2) is provided below the dryer body (1); A motor reducer (11) is arranged above the dryer body (1), a vacuum port (12), a feed port (13) and a water inlet (14) are arranged above the dryer body (1), a gradually changing spiral shaft (15) is arranged in the middle of the dryer body (1), a cone shell (16) is connected to the bottom of the dryer body (1) by bolts, a jacket (17) is arranged outside the cone shell (16), and a connector (18) is fixedly connected to the lower end of the cone shell (16); A liquid discharge port (21) is provided at the bottom of the lower protective cover (2), a positioning platform (22) is fixedly connected to the upper end of the lower protective cover (2), a positioning groove (23) is provided on the inner wall of the positioning platform (22), a filter plate (24) is clamped inside the positioning groove (23), a clamping groove (25) is provided on the upper surface of the filter plate (24), a positioning frame (26) is fixed inside the clamping groove (25) by means of bolts, and a filter cloth (27) is attached to the lower surface of the positioning frame (26).

2. The acid- and alkali-resistant vacuum dryer according to claim 1, characterized in that: The cone shell (16) is nested and arranged outside the gradual spiral shaft (15), and a mechanical seal is arranged between the cone shell (16) and the dryer body (1).

3. The acid- and alkali-resistant vacuum dryer according to claim 1, characterized in that: The connecting head (18) is connected to the lower shield (2) via bolts, and a mechanical seal is provided between the lower shield (2) and the connecting head (18).

4. The acid- and alkali-resistant vacuum dryer according to claim 1, characterized in that: The filter plate (24) is arranged in a polygonal shape, and the filter plate (24) is composed of a polytetrafluoroethylene perforated plate.

5. The acid- and alkali-resistant vacuum dryer according to claim 1, characterized in that: A flange is provided on the upper surface of the positioning platform (22) close to the positioning groove (23), and the positioning platform (22) is connected to the lower surface of the connector (18) by snap-fitting through the flange.

6. The acid- and alkali-resistant vacuum dryer according to claim 1, characterized in that: The lower surface of the positioning frame (26) is provided with anti-slip grooves, the anti-slip grooves are opened on the inner side of the positioning frame (26), and the edge of the filter cloth (27) is clamped and arranged between the positioning frame (26) and the card slot (25).

Images