A prefabricated thickening agent vacuum drying device

Abstract

The utility model relates to powder material vacuum drying equipment technical field discloses a kind of prefabricated thickening agent vacuum drying devices, including drying unit, vacuum system, dust removal component, the drying unit includes cylinder, the inside rotation of cylinder is connected with main shaft, the outer wall of main shaft is fixedly connected with spiral stirring paddle, the jacket of cylinder is fixedly connected with heat source import, heat source export and heat source export is located at the top of heat source import, the outer wall of main shaft is fixedly connected with stirring motor.In the utility model, by setting drying unit, vacuum system, dust removal component, feed sealing cooperation jacket and spiral stirring paddle double heating;Vacuum dehumidification will cylinder decompression accelerate moisture evaporation, combined with condenser and cold water circulation rapid liquefaction, greatly shorten drying cycle.And water ring vacuum pump and water gas separator combination, waterproof steam loss pump, prolong the life of equipment, realized equipment multilink cooperation, improve wet powder drying efficiency and the effect of quality.

Description

Technical Field

[0001] This utility model relates to the technical field of powder material drying equipment, and in particular to a vacuum drying device for pre-made thickeners with high water content (such as lithium dodecyl stearate soap, polyurea, etc.), which is suitable for scenarios in grease production where the requirements for powder moisture content, flowability and cleanliness are strict. Background Technology

[0002] Pre-made thickeners are pre-prepared thickening materials used in the production of greases. They are usually in the form of solid powder and are added directly to the base oil during the production process to form a structural framework, so that the base oil is adsorbed and fixed, ultimately forming a plastic semi-solid grease.

[0003] Pre-made thickener drying equipment is a specialized device for drying pre-made thickeners. Its core function is to remove moisture from the pre-made thickeners using specific technical means to achieve a moisture content that meets the requirements for subsequent use. It is widely used in many fields such as chemical industry, building materials, and food processing. Pre-made thickener drying equipment is an indispensable key piece of equipment in the production process of pre-made thickeners, and its performance directly affects the quality of the final product and production efficiency.

[0004] While the aforementioned technologies have achieved the drying of pre-made thickeners, existing equipment is mostly optimized for single problems and has not formed an integrated design of "heating-vacuum-dust removal," making it difficult to meet the fine drying requirements of pre-made thickeners and inconvenient to use. Therefore, a vacuum drying device for pre-made thickeners is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a vacuum drying device for pre-made thickeners, which aims to solve the problem that existing equipment is mostly single-optimized and lacks an integrated design of "heating-vacuum-dust removal", making it difficult to meet the fine drying requirements of pre-made thickeners.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pre-made thickener vacuum drying device, comprising a drying unit, a vacuum system, and a dust removal component. The drying unit includes a cylinder, a main shaft is rotatably connected inside the cylinder, a spiral stirring paddle is fixedly connected to the outer wall of the main shaft, a heat source inlet and a heat source outlet are fixedly connected to the jacket of the cylinder, with the heat source outlet located at the top of the heat source inlet, a stirring motor is fixedly connected to the outer wall of the main shaft, a discharge port is opened at the bottom of the cylinder, and a feed port is rotatably connected to the top of the cylinder.

[0007] As a further description of the above technical solution:

[0008] The vacuum system includes a water ring vacuum pump and a cold water circulation system. A buffer tank is fixedly connected to one end of the water ring vacuum pump, and a water-gas separator is fixedly connected to the other end of the water ring vacuum pump. A condenser is fixedly connected to the top of the buffer tank.

[0009] As a further description of the above technical solution:

[0010] The dust removal assembly includes a dust removal cylinder, a filter element is installed inside the dust removal cylinder, an air source is installed on the top of the filter element, and the bottom of the dust removal cylinder is connected to the top of the cylinder.

[0011] As a further description of the above technical solution:

[0012] An observation port is provided on the side wall of the cylinder. A movable hopper is connected to the top of the feed inlet via a flexible hose. A ring is fixedly connected to the outer wall of the feed inlet. A retaining ring is fixedly connected to the bottom of the ring. A rotating sieve assembly is provided inside the feed inlet.

[0013] As a further description of the above technical solution:

[0014] The rotating sieve assembly includes a rotating motor, the output end of which is fixedly connected to a gear, the outer wall of which is meshed with an external gear ring, the top outer wall of the feed inlet is fixedly connected to a support ring, the inside of the feed inlet is fixedly connected to a bottom ring, the inside of the bottom ring is rotatably connected to a rotating retaining ring, and the top of the rotating retaining ring is fixedly connected to a filter screen.

[0015] As a further description of the above technical solution:

[0016] The inner ring of the external toothed ring is fixedly connected to the outer wall of the feed inlet, the outer wall of the filter screen is rotatably connected to the inside of the feed inlet, and the bottom of the rotating motor is fixedly connected to the top of the cylinder.

[0017] As a further description of the above technical solution:

[0018] The support ring is rotatably connected to a sleeve, and a clamp is fixedly connected to the top of the sleeve. The clamp is then fixedly connected to the bottom of the flexible hose of the moving hopper by bolts.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the retaining ring is rotatably connected to the top of the feed inlet, and the bottom of the ring is attached to the top of the feed inlet.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up a drying unit, a vacuum system, and a dust removal component, the feeding seal is combined with a jacket and a spiral stirring paddle for dual heating; vacuum dehumidification reduces the pressure in the cylinder to accelerate moisture evaporation, and combined with a condenser and cold water circulation for rapid liquefaction, the drying cycle is significantly shortened. Furthermore, the combination of a water ring vacuum pump and a water-air separator prevents water vapor loss and extends equipment life, achieving multi-stage synergy in the equipment and improving the drying efficiency and quality of wet powder materials.

[0023] 2. In this utility model, by setting a rotating motor, gears, and an external gear ring, the rotating sieve structure is driven by the motor to mesh with the gears and the external gear ring, which drives the filter screen in the feed inlet to rotate. The material can be screened at the initial feeding stage, thus avoiding the effect of impurities affecting the purity of the finished product due to uneven particle size or impurities mixed in during the subsequent drying process. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a pre-made thickener vacuum drying device proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the rotating sieve assembly of a pre-made thickener vacuum drying device proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the disassembly of the rotating sieve assembly of a vacuum drying device for pre-made thickeners proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the filter installation structure of a pre-thickening agent vacuum drying device proposed in this utility model.

[0028] Legend:

[0029] 1. Mobile hopper; 2. Cylinder; 3. Dust collector cylinder; 4. Filter element; 5. Feed inlet; 6. Air source; 7. Spiral agitator; 8. Main shaft; 9. Observation port; 10. Heat source inlet; 11. Heat source outlet; 12. Water ring vacuum pump; 13. Condenser; 14. Buffer tank; 15. Cold water circulation system; 16. Water-air separator; 17. Agitator motor; 18. Discharge port; 19. Rotating sieve assembly; 191. Rotating motor; 192. Gear; 193. External gear ring; 194. Support ring; 195. Bottom ring; 196. Rotating retaining ring; 197. Filter screen; 20. Ring; 21. Retaining ring; 22. Sleeve; 23. Clamp. 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] Reference Figures 1-2 This utility model provides an embodiment of a pre-made thickener vacuum drying device, comprising a drying unit, a vacuum system, and a dust removal assembly. The drying unit includes a horizontal container with a polished inner wall (Ra≤0.8μm), a jacket circulated with heat transfer oil, and a cylinder 2 with an adjustable temperature of 50~120℃. A main shaft 8 is rotatably connected inside the cylinder 2. A hollow impeller 7 with a built-in heat-conducting medium is fixedly connected to the outer wall of the main shaft 8. The impeller rotates at a speed of 30r / min to agitate the material. A heat source inlet 10 and a heat source outlet 11 are fixedly connected to the jacket of the cylinder 2, with the heat source outlet 11 located at the top of the heat source inlet 10. A stirring motor 17 is fixedly connected to the outer wall of the main shaft 8. A discharge port 18 is opened at the bottom of the cylinder 2. The top is rotatably connected to a feed inlet 5 with an internally pneumatically controlled valve. First, during the feeding stage, the wet powder in the moving hopper 1 enters the cylinder 2 through the feed inlet 5, and then the feed valve is closed. During the drying start-up stage, the heat source heat transfer oil is turned on and enters the jacket of the cylinder 2 and the spiral agitator 7 through the inlet 10. At the same time, the agitator motor 17 is started, and the blades rotate to turn the material, so that the material is heated evenly. Then, vacuum dehumidification is performed. The water ring vacuum pump 12 is started to reduce the pressure inside the cylinder 2. At this time, the water evaporates rapidly under low pressure. The water vapor enters the condenser 13 through the pipeline, is cooled and liquefied by the cold water circulation system 15, and flows into the buffer tank 14. The uncondensed gas is separated by the water vapor separator 16 and discharged to prevent water vapor from entering the water ring vacuum pump 12.

[0032] The vacuum system includes pumping speeds of 15–50 m / s. 3 / h, a water ring vacuum pump 12 with an ultimate vacuum of -0.098MPa and a cold water circulation system 15, when the water ring vacuum pump 12 is started, the pressure inside the cylinder 2 drops to -0.09MPa. One end of the water ring vacuum pump 12 is fixedly connected to a container with a volume of 0.5~1m³. 3The buffer tank 14 has a water-air separator 16 fixedly connected to the other end of the water ring vacuum pump 12. The water-air separator 16 has a separation efficiency of ≥99% to protect the vacuum pump. The top of the buffer tank 14 is fixedly connected to a shell-and-tube structure with a cooling area of ​​5-10㎡, which is linked to the cold water circulation system 15 and the condenser 13. The dust removal assembly includes a dust removal cylinder 3. The dust removal cylinder 3 has 3-5 built-in filter elements 4 made of polytetrafluoroethylene with a filtration accuracy of 1μm. An air source 6 is set on the top of the filter element 4. The bottom of the dust removal cylinder 3 is connected to the top of the cylinder 2. The filter elements are backflushed at regular intervals of 10-30 minutes, each time for 10-20 seconds. The side wall is provided with an observation port 9 made of quartz glass. The top of the feed inlet 5 is connected to a movable hopper 1 with a valve via a hose. A ring 20 is fixedly connected to the outer wall of the feed inlet 5, and a retaining ring 21 is fixedly connected to the bottom of the ring 20. A rotating sieve assembly 19 is set inside the feed inlet 5. During the drying process, dust removal and cleaning are also carried out. The dust rising with the airflow is intercepted by the filter element 4. The air source 6 back-blowing the filter element 4 at regular intervals causes the dust to fall back into the cylinder 2. Finally, the material is discharged. After confirming the moisture content of the material through the observation port 9, the heat source and vacuum system are turned off, the discharge port 18 is opened, and the stirring paddle reverses to push the material to the next process.

[0033] Reference Figures 2-4 The rotating sieve assembly 19 includes a rotating motor 191 with a power of 0.5-1.5kW. A gear 192 with a module of 2-4mm is fixedly connected to the output end of the rotating motor 191. An outer gear ring 193 with 50-80 teeth meshes with the outer wall of the gear 192. A support ring 194 with a diameter of 200-300mm is fixedly connected to the top outer wall of the feed inlet 5. A bottom ring 195 with a thickness of 10-15mm is fixedly connected to the inside of the feed inlet 5. A rotating retaining ring 196 is rotatably connected to the inside of the bottom ring 195. A filter screen 197 with a mesh size of 80-120 is fixedly connected to the top of the rotating retaining ring 196. The inner ring of the outer gear ring 193 is fixedly connected to the outer wall of the feed inlet 5. The outer wall of the filter screen 197 is rotatably connected to the inside of the feed inlet 5. The rotation speed is the same as the output speed of the rotating motor 191.

[0034] Reference Figures 1-3The bottom of the rotating motor 191 is fixedly connected to the top of the cylinder 2. The inner diameter of the sleeve 22, which is 5-10mm larger than the outer diameter of the hose of the moving hopper 1, is rotatably connected to the inside of the support ring 194. The top of the sleeve 22 is fixedly connected to the clamping range adapted to the hose diameter. The inside of the clamp 23 is fixedly connected to the bottom of the hose of the moving hopper 1 by bolts of M8-M10. The outer wall of the retaining ring 21 is rotatably connected to the top of the feed inlet 5. The bottom of the ring 20 is attached to the top of the feed inlet 5. After the rotating motor 191 is started, the output end drives the gear 192 to rotate. Because the gear 192 meshes with the outer gear ring 193, it drives the outer gear ring 193 to rotate. The inner ring of the outer gear ring 193 is fixed to the outer wall of the feed inlet 5, which in turn drives the filter screen 197 on the top of the rotating retaining ring 196 inside the feed inlet 5 to rotate, thereby realizing the rotational screening of the material entering the feed inlet 5.

[0035] Working principle: During operation, firstly, in the feeding stage, the wet powder material in the moving hopper 1 enters the cylinder 2 through the feed inlet 5, and then the feed valve is closed; in the drying start-up stage, the heat source heat transfer oil is turned on and enters the jacket of the cylinder 2 and the spiral agitator 7 through the inlet 10, and at the same time the agitator motor 17 is started, the blades rotate and move the material, so that the material is heated evenly; then vacuum dehumidification is performed, the water ring vacuum pump 12 is started to reduce the pressure inside the cylinder 2, at this time the water evaporates rapidly under low pressure, the water vapor enters the condenser 13 through the pipeline, is cooled and liquefied by the cold water circulation system 15 and flows into the buffer tank 14, and the uncondensed gas is separated by the water-gas separator 16 and discharged to prevent water vapor from entering the water ring vacuum pump 12; During the drying process, dust removal and cleaning are also carried out. The dust rising with the airflow is intercepted by the filter element 4. The air source 6 back-blowing the filter element 4 at regular intervals causes the dust to fall back into the cylinder 2. Finally, the material discharge is completed. After confirming the moisture content of the material through the observation port 9, the heat source and vacuum system are turned off, the discharge port 18 is opened, and the stirring paddle reverses to push the material to the next process. After the rotating motor 191 is started, the output end drives the gear 192 to rotate. Because the gear 192 meshes with the outer gear ring 193, it drives the outer gear ring 193 to rotate. The inner ring of the outer gear ring 193 is fixed to the outer wall of the feed port 5, which in turn drives the filter screen 197 at the top of the rotating retaining ring 196 inside the feed port 5 to rotate, realizing the rotation and sieving of the material entering the feed port 5.

[0036] 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 vacuum drying apparatus for a pre-made thickener, comprising a drying unit, a vacuum system, and a dust removal component, characterized in that: The drying unit includes a cylinder (2), a main shaft (8) is rotatably connected inside the cylinder (2), a spiral stirring paddle (7) is fixedly connected to the outer wall of the main shaft (8), a heat source inlet (10) and a heat source outlet (11) are fixedly connected to the jacket of the cylinder (2), and the heat source outlet (11) is located at the top of the heat source inlet (10). A stirring motor (17) is fixedly connected to the outer wall of the main shaft (8), a discharge port (18) is opened at the bottom of the cylinder (2), and a feed port (5) is rotatably connected to the top of the cylinder (2).

2. The vacuum drying apparatus for a pre-made thickener according to claim 1, characterized in that: The vacuum system includes a water ring vacuum pump (12) and a cold water circulation system (15). One end of the water ring vacuum pump (12) is fixedly connected to a buffer tank (14), and the other end of the water ring vacuum pump (12) is fixedly connected to a water-gas separator (16). The top of the buffer tank (14) is fixedly connected to a condenser (13).

3. The vacuum drying apparatus for a pre-made thickener according to claim 1, characterized in that: The dust removal assembly includes a dust removal cylinder (3), a filter element (4) is provided inside the dust removal cylinder (3), an air source (6) is provided on the top of the filter element (4), and the bottom of the dust removal cylinder (3) is connected to the top of the cylinder (2).

4. The vacuum drying apparatus for a pre-made thickener according to claim 1, characterized in that: The side wall of the cylinder (2) is provided with an observation port (9), the top of the feed inlet (5) is connected to a movable hopper (1) through a hose, the outer wall of the feed inlet (5) is fixedly connected with a ring (20), the bottom of the ring (20) is fixedly connected with a retaining ring (21), and a rotating sieve assembly (19) is provided inside the feed inlet (5).

5. The vacuum drying apparatus for a pre-made thickener according to claim 4, characterized in that: The rotating sieve assembly (19) includes a rotating motor (191), the output end of which is fixedly connected to a gear (192), the outer wall of which is meshed with an external gear ring (193), the top outer wall of the feed inlet (5) is fixedly connected to a support ring (194), the inside of the feed inlet (5) is fixedly connected to a bottom ring (195), the inside of which is rotatably connected to a rotating retaining ring (196), and the top of the rotating retaining ring (196) is fixedly connected to a filter screen (197).

6. The vacuum drying apparatus for a pre-made thickener according to claim 5, characterized in that: The inner ring of the outer toothed ring (193) is fixedly connected to the outer wall of the feed inlet (5), the outer wall of the filter screen (197) is rotatably connected to the inside of the feed inlet (5), and the bottom of the rotating motor (191) is fixedly connected to the top of the cylinder (2).

7. The vacuum drying apparatus for a pre-made thickener according to claim 5, characterized in that: The support ring (194) is rotatably connected to a sleeve (22), and a clamp (23) is fixedly connected to the top of the sleeve (22). The clamp (23) is fixedly connected to the bottom of the hose of the mobile hopper (1) by bolts.

8. The vacuum drying apparatus for a pre-made thickener according to claim 4, characterized in that: The outer wall of the retaining ring (21) is rotatably connected to the top of the feed inlet (5), and the bottom of the ring (20) is attached to the top of the feed inlet (5).

Images