Glass lining single-cone vacuum drying machine

Abstract

The invention provides a glass lining single-cone vacuum dryer, and belongs to the technical field of vacuum dryers. According to the structure, an installation opening is formed in the upper end of a tank body, a dust catcher is installed at the installation opening, a discharging opening is formed in the lower end of the tank body, a discharging valve is installed at the discharging opening, a clamping sleeve is arranged outside the tank body, and two groove bodies which penetrate through the clamping sleeve and are not communicated with the interior of the clamping sleeve are fixedly connected to the exterior of the tank body. Mounting pipes are arranged in the two tank bodies, a thermometer and a vacuum sampling valve are respectively mounted in the two tank bodies, a bracket is arranged outside the jacket, and the inner wall of the tank body is a glass lining surface. Compared with the prior art, the drying efficiency is high, the mixing precision is high, the low-shearing-force helical ribbon is used for stirring, and the shape of materials is not damaged; meanwhile, the equipment adopts a glass lining inner surface and is suitable for various corrosive materials. The drying effect is improved, the application range is widened, the functions are more complete, installation and maintenance are easy, and good operation performance and outstanding technical advantages are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum dryers, in particular to a glass-lined single-cone vacuum dryer. Background Art

[0002] Vacuum dryer is a batch-type multifunctional fully enclosed process equipment widely used in chemical, fine chemical, food and pharmaceutical industrial processes. It is particularly suitable for mixing, vacuum drying and reaction of low-viscosity, small-particle (particle size <2mm), heat / oxygen-sensitive materials. For materials with high viscosity, paste, slurry, and materials that are fragile after drying, vacuum dryers can also be used for drying after adjusting process conditions or matching power conditions. Therefore, vacuum dryers play a wide and important role in industrial-scale material drying.

[0003] However, conventional vacuum dryers are generally all-metal structures, which make it difficult to handle corrosive materials; and their structure and functions need to be improved. A typical vacuum dryer includes a closed tank body and a vacuum pumping system. The outside of the tank body is equipped with an electric heating mechanism or a jacket structure for adjusting the temperature. During operation, the material is driven to tumble through the rotation of the tank body itself or the rotation of the stirring mechanism in the tank to achieve the drying effect. Although this type of vacuum dryer is relatively mature in design, its mass transfer efficiency is not high, the drying effect still needs to be improved, and the overall function of the equipment is not perfect. There is room for improvement in both the feeding and discharging links, condition control links, and state monitoring links. Summary of the invention

[0004] The present invention aims to provide a glass-lined single-cone vacuum dryer to address the technical defects of the prior art, so as to solve the technical problems that the conventional vacuum dryer needs to be improved in terms of drying effect and overall function.

[0005] Another technical problem to be solved by the present invention is that conventional vacuum dryers are difficult to process corrosive materials.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: A glass-lined single-cone vacuum dryer comprises a tank body, a frame, an explosion-proof motor, a stirring shaft, a spiral belt, a mounting port, a discharge port, a jacket, a first tank body, a second tank body, a first mounting pipe, a second mounting pipe, a jacket water outlet, a jacket water inlet, a bracket, and a glass-lined surface, wherein a frame is fixedly connected to the tank body, an explosion-proof motor and a reducer are fixedly connected to the frame, a stirring shaft is rotatably connected in the tank body, the explosion-proof motor is transmission-connected to the stirring shaft through the reducer, a mounting port is fixedly connected to the outside of the stirring shaft, a mounting port is provided at the upper end of the tank body, and a A dust collector is provided, a discharge port is provided at the lower end of the tank body, a discharge valve is installed at the discharge port, a jacket is provided on the outside of the tank body, a first trough body and a second trough body which penetrate the jacket and are not communicated with the inside of the jacket are fixedly connected to the outside of the tank body, a first mounting pipe is provided in the first trough body, a second mounting pipe is provided in the second trough body, a thermometer is installed on the first mounting pipe, a vacuum sampling valve is installed on the second mounting pipe, a jacket water outlet and a jacket water inlet are respectively provided on the jacket, a number of brackets are fixedly connected to the outside of the jacket, and the inner wall of the tank body is a glass-lined surface.

[0007] Preferably, the tank body comprises a conical container and a head connected to an upper port of the container, and the frame, the stirring shaft and the mounting port are all located on the head.

[0008] Preferably, the axis of the spiral ribbon coincides with the axis of the stirring shaft, and the diameter of the spiral ribbon gradually decreases in a top-down direction.

[0009] Preferably, the thickness of the glass-lined surface is 0.8-2 mm.

[0010] Preferably, a plurality of connecting rods extending radially along the stirring shaft are fixedly connected to the stirring shaft, and the outer ends of the connecting rods are fixedly connected to the screw belt.

[0011] Preferably, a plurality of ring bodies are fixedly connected to the stirring shaft, and the inner ends of the connecting rods are fixedly connected to the ring bodies.

[0012] Preferably, a connecting pipe is provided at the upper end of the tank body, and an end cover is installed on the connecting pipe.

[0013] Preferably, a lifting lug is fixedly connected to the tank body, a tube body is provided on the jacket, and a pad is provided at the bottom end of the bracket.

[0014] Preferably, a condensate collection well is provided on the dust collector.

[0015] Preferably, the reducer is a parallel shaft gear reducer.

[0016] Preferably, the stirring shaft extends upward to above the tank body, and a rotating joint is provided at the upper end of the stirring shaft.

[0017] In addition to the technical features clearly defined above, the present invention can also be equipped with other structures or accessories within the known scope, such as a vacuum system, an external water / steam / thermal oil mold temperature controller, a weighing module, etc.

[0018] The main body material of the present invention can be selected from 304 stainless steel, 316L stainless steel, 321 stainless steel, 2205 duplex stainless steel, Hastelloy C-276 alloy or Hastelloy C-22 alloy. The spiral ribbon of the present invention can be treated with fluorine spraying; the surface of the present invention in contact with the material is a glass-lined surface (the glass-lined glaze can be a conventional product in the field, such as the glass-lined glaze with the trade name of Silicon Pu No. 10), so that the present invention can be applied to various organic and inorganic acidic media (excluding fluoride ions) that can be almost completely ionized in aqueous solution except hydrofluoric acid, hot concentrated phosphoric acid and strong alkali.

[0019] The present invention is a vertical pressure vessel equipment, the structure of which mainly includes an upper cover with a head and a flange, a conical lower cylinder with a jacket, a vacuum filtering device, a top-inserted spiral ribbon stirring device, a driving device, a shaft seal, a bottom discharge valve, a temperature and pressure measuring device, etc., and can also be equipped with an optional internal stirring heating system, an online weighing device, an online sampling valve, a dust collector, an online washing device CIP / MIP, an online sterilizing device SIP, a vacuum system, an external water / steam / thermal oil mold temperature controller, a PLC automatic control, etc.

[0020] The present invention is a single-cone spiral ribbon mixing vacuum dryer. During the drying and mixing process, only the spiral ribbon stirring with low shear force is used to drive the material to be spirally lifted and freely dropped along the inner wall of the cone, and the material is continuously sheared and dispersed, thereby ensuring that all the internal materials can obtain sufficient movement, and the materials are not squeezed by any other external force, thereby avoiding the ineffective friction between the materials and the equipment and the material grains, and at the same time eliminating the possibility of material agglomeration during the drying process, thereby greatly improving the mixing and drying efficiency of the materials.

[0021] The explosion-proof motor of the present invention is a variable frequency speed regulating motor, which drives the spiral belt stirrer to rotate through a parallel helical gear reducer to drive the material to rotate along the conical cylinder and lift it from bottom to top; after the material reaches the highest point, it automatically flows to the center of the vortex and returns to the bottom of the conical cylinder due to gravity and inertia; the whole process forces the material to continuously turn over and contact the inner wall of the conical cylinder jacket for heating, relative convection and mixing, and heat diffuses mutually in the material, so that the material makes a full range of irregular reciprocating motion, completes the high-frequency heat transfer exchange between the material and the cylinder wall (and spiral belt) surface, and achieves the effect of heating and drying in a short time; the moisture inside the material evaporates continuously, and under the action of the vacuum pump, the solvent vapor is led out by the vacuum pump. If it needs to be recovered, a condenser and a recovery liquid storage tank can be added for recovery. The condenser is installed before or after the vacuum pump depending on the nature of the solvent; the dried material is discharged through the discharge valve at the bottom of the cone.

[0022] Compared with the prior art, the present invention has high drying efficiency and mixing accuracy, and uses low shear force spiral ribbon stirring without destroying the shape of the material; at the same time, the equipment adopts a glass-lined inner surface, which is suitable for a variety of corrosive materials. On the basis of the present invention, a larger heat exchange area can be achieved by increasing the heat transfer in the stirring, and a sanitary mechanical seal can be used, which has good scalability. The present invention has good drying effect, wide application range, more complete functions, and is easy to install and maintain, with good operating performance and outstanding technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an internal structure diagram of the present invention as a whole observed from the main viewing angle; Figure 2 This is an external structural diagram of the tank body in the present invention, viewed from a top view; Figure 3 yes Figure 2 Cross-sectional view at AA in the middle; In the figure: 1. Tank 2. Rack 3. Explosion-proof motor 4. Stirring shaft 5. Screw ribbon 6. Installation port 7. Discharge port 8. Jacket 9. The first tank 10. Second tank 11. First installation tube 12. Second installation tube 13. Jacket outlet 14. Jacket water inlet 15. Bracket 16. Glass-lined surface 17. Connecting rod 18. Ring 19. Connecting pipe 20. End cap 21. Lifting lugs 22. Pipe body 23. Pad. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be described in detail below. In order to avoid too much unnecessary details, the well-known structures or functions will not be described in detail in the following examples. The approximate language used in the following examples can be used for quantitative expression, indicating that the quantity can be allowed to have a certain change without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following examples have the same meaning as those generally understood by those skilled in the art to which the present invention belongs.

[0025] Example 1 Glass lined single cone vacuum dryer, such as Figure 1~Figure 3As shown, it includes a tank body 1, a frame 2, an explosion-proof motor 3, a stirring shaft 4, a screw belt 5, a mounting port 6, a discharge port 7, a jacket 8, a first tank body 9, a second tank body 10, a first mounting pipe 11, a second mounting pipe 12, a jacket water outlet 13, a jacket water inlet 14, a bracket 15, and a glass-lined surface 16, wherein the frame 2 is fixedly connected to the tank body 1, the explosion-proof motor 3 and the reducer are fixedly connected to the frame 2, the stirring shaft 4 is rotatably connected in the tank body 1, the explosion-proof motor 3 is transmission-connected to the stirring shaft 4 through the reducer, and the stirring shaft 4 is fixedly connected to the outside of the stirring shaft 4, and a mounting port 6 is provided at the upper end of the tank body 1, and a dust collector is installed at the mounting port 6. The collector is provided with a discharge port 7 at the lower end of the tank body 1, a discharge valve is installed at the discharge port 7, a jacket 8 is provided on the outside of the tank body 1, a first tank body 9 and a second tank body 10 which penetrate the jacket 8 and are not communicated with the inside of the jacket 8 are fixedly connected to the outside of the tank body 1, a first mounting pipe 11 is provided in the first tank body 9, a second mounting pipe 12 is provided in the second tank body 10, a thermometer is installed on the first mounting pipe 11, a vacuum sampling valve is installed on the second mounting pipe 12, a jacket water outlet 13 and a jacket water inlet 14 are respectively provided on the jacket 8, a plurality of brackets 15 are fixedly connected to the outside of the jacket 8, and the inner wall of the tank body 1 is a glass-lined surface 16.

[0026] In the above technical scheme, the tank body 1 is the main structure of the present invention, which is used to construct a negative pressure environment for vacuum drying. The frame 2 is used to carry the explosion-proof motor 3 and the reducer; the explosion-proof motor 3 and the reducer are used to drive the stirring shaft 4 to rotate, thereby driving the spiral belt 5 thereon to rotate in the tank body 1, and stirring the material. The installation port 6 is used to install a dust collector. The discharge port 7 is used to discharge after the drying is completed, and a discharge valve is installed on it to control the discharge process. The jacket 8 is used to fill heat transfer medium such as heat transfer oil to control the drying temperature. The first tank body 9 and the second tank body 10 are respectively used to set the first installation pipe 11 and the second installation pipe 12, and the first installation pipe 11 and the second installation pipe 12 are respectively installed with a thermometer and a vacuum sampling valve, the thermometer is used to monitor the working temperature, and the vacuum sampling valve can perform sampling detection. The jacket water outlet 13 and the jacket water inlet 14 are the inlet and outlet channels of the heat exchange medium in the jacket 8. The bracket 15 is used to install and fix the present invention. The glass-lined surface 16 is the contact surface between the present invention and the material. Based on the inherent properties of the glass-lined material, the present invention can process most corrosive materials.

[0027] Example 2 Glass lined single cone vacuum dryer, such as Figure 1~Figure 3As shown, it includes a tank body 1, a frame 2, an explosion-proof motor 3, a stirring shaft 4, a screw belt 5, a mounting port 6, a discharge port 7, a jacket 8, a first tank body 9, a second tank body 10, a first mounting pipe 11, a second mounting pipe 12, a jacket water outlet 13, a jacket water inlet 14, a bracket 15, and a glass-lined surface 16, wherein the frame 2 is fixedly connected to the tank body 1, the explosion-proof motor 3 and the reducer are fixedly connected to the frame 2, the stirring shaft 4 is rotatably connected in the tank body 1, the explosion-proof motor 3 is transmission-connected to the stirring shaft 4 through the reducer, and the stirring shaft 4 is fixedly connected to the outside of the stirring shaft 4, and a mounting port 6 is provided at the upper end of the tank body 1, and a dust collector is installed at the mounting port 6. The collector is provided with a discharge port 7 at the lower end of the tank body 1, a discharge valve is installed at the discharge port 7, a jacket 8 is provided on the outside of the tank body 1, a first tank body 9 and a second tank body 10 are fixedly connected to the outside of the tank body 1, which penetrate the jacket 8 and are not connected to the inside of the jacket 8, a first installation pipe 11 is provided in the first tank body 9, a second installation pipe 12 is provided in the second tank body 10, a thermometer is installed on the first installation pipe 11, a vacuum sampling valve is installed on the second installation pipe 12, a jacket water outlet 13 and a jacket water inlet 14 are respectively provided on the jacket 8, a plurality of brackets 15 are fixedly connected to the outside of the jacket 8, and the inner wall of the tank body 1 is a glass-lined surface 16. Among them, the tank body 1 includes a conical container and a head connected to the upper end of the container, and the frame 2, the stirring shaft 4, and the installation port 6 are all located on the head. The axis of the spiral ribbon 5 coincides with the axis of the stirring shaft 4, and the diameter of the spiral ribbon 5 gradually decreases in the direction from top to bottom. The thickness of the glass-lined surface 16 is 0.8-2 mm. A plurality of connecting rods 17 extending radially along the stirring shaft 4 are fixedly connected to the stirring shaft 4, and the outer ends of the connecting rods 17 are fixedly connected to the spiral belt 5. A plurality of ring bodies 18 are fixedly connected to the stirring shaft 4, and the inner ends of the connecting rods 17 are fixedly connected to the ring bodies 18. A connecting pipe 19 is provided at the upper end of the tank body 1, and an end cover 20 is installed on the connecting pipe 19. A lifting lug 21 is fixedly connected to the tank body 1, a tube body 22 is provided on the jacket 8, and a pad 23 is provided at the bottom end of the bracket 15. A condensate collection well is provided on the dust collector. The reducer is a parallel shaft gear reducer. In the above technical scheme, the connecting rod 17 is used to connect and fix between the stirring shaft 4 and the spiral belt 5, and the connecting rod 17 needs to be provided with multiple channels to ensure the stability of the fixed structure of the spiral belt 5; the ring body 18 can play a structural reinforcement role between the stirring shaft 4 and the connecting rod 17. The connecting pipe 19 can be used for maintenance or inspection, and can be closed by the end cover 20 when not in use. The lifting lug 21 can be used to hoist the present invention, and only empty tanks are allowed to be hoisted. The pipe body 22 can be used for maintenance. The pad 23 is located between the bracket 15 and the external load-bearing plane and can play a supporting role.

[0028] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. Glass-lined single cone vacuum dryer, characterized by The invention comprises a tank body (1), a frame (2), an explosion-proof motor (3), an agitator shaft (4), a screw belt (5), a mounting port (6), a discharge port (7), a jacket (8), a first tank body (9), a second tank body (10), a first mounting pipe (11), a second mounting pipe (12), a jacket water outlet (13), a jacket water inlet (14), a bracket (15), and a glass-lined surface (16), wherein the frame (2) is fixedly connected to the tank body (1), the frame (2) is fixedly connected to the explosion-proof motor (3) and a reducer, the agitator shaft (4) is rotatably connected in the tank body (1), the explosion-proof motor (3) is transmission-connected to the agitator shaft (4) via the reducer, the agitator shaft (4) is fixedly connected to the outside of the agitator shaft (4), a mounting port (6) is provided at the upper end of the tank body (1), and a mounting port (6) is installed at the mounting port (6). A dust collector is provided, wherein a discharge port (7) is provided at the lower end of a tank body (1), a discharge valve is installed at the discharge port (7), a jacket (8) is provided on the outside of the tank body (1), a first tank body (9) and a second tank body (10) which penetrate the jacket (8) and are not communicated with the inside of the jacket (8) are fixedly connected to the outside of the tank body (1), a first mounting pipe (11) is provided in the first tank body (9), a second mounting pipe (12) is provided in the second tank body (10), a thermometer is installed on the first mounting pipe (11), a vacuum sampling valve is installed on the second mounting pipe (12), a jacket water outlet (13) and a jacket water inlet (14) are respectively provided on the jacket (8), a plurality of brackets (15) are fixedly connected to the outside of the jacket (8), and the inner wall of the tank body (1) is a glass-lined surface (16).

2. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: The tank body (1) comprises a conical container and a head connected to an upper port of the container, and the frame (2), the stirring shaft (4), and the mounting port (6) are all located on the head.

3. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: The axis of the spiral ribbon (5) coincides with the axis of the stirring shaft (4), and the diameter of the spiral ribbon (5) gradually decreases in a direction from top to bottom.

4. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: The thickness of the glass-lined surface (16) is 0.8 to 2 mm.

5. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: A plurality of connecting rods (17) extending in the radial direction of the stirring shaft (4) are fixedly connected to the stirring shaft (4), and the outer ends of the connecting rods (17) are fixedly connected to the spiral belt (5).

6. The glass-lined single cone vacuum dryer according to claim 5, characterized in that: A plurality of ring bodies (18) are fixedly connected to the stirring shaft (4), and the inner ends of the connecting rods (17) are fixedly connected to the ring bodies (18).

7. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: A connecting pipe (19) is provided at the upper end of the tank body (1), and an end cover (20) is mounted on the connecting pipe (19).

8. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: A lifting lug (21) is fixedly connected to the tank body (1), a pipe body (22) is provided on the jacket (8), and a pad (23) is provided at the bottom end of the bracket (15).

9. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: A condensed water collection well is provided on the dust collector.

10. The glass-lined single cone vacuum dryer according to claim 1, characterized in that: The reducer is a parallel shaft gear reducer.

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