Double-cone rotary vacuum dryer convenient to clean

Abstract

The utility model discloses a double-cone rotary vacuum dryer convenient to clean, which comprises a fixed seat, two driving spindles are rotatably mounted on the inner side of the top end of the fixed seat, a drying tank is fixed between the two driving spindles, two fixing rods with coincident axes are fixed on the inner side of the drying tank, and the two fixing rods are fixed on the inner side of the drying tank. A center ball is fixed between the two fixing rods, two double-end motors are fixed in the center ball, and rotating shaft rods are fixed to the two ends of each double-end motor. The cleaning scraper blade is supported by the rotary connecting rod with the two ends bent by 45 degrees, so that the cleaning scraper blade is attached to the inner surface of the drying tank, and when the cleaning scraper blade rotates around the axis of the rotary shaft rod and cleans the interior of the drying tank, the rotary connecting rod does not make contact with the vacuum filter, so that the cleaning scraper blade is prevented from being damaged. And a vacuum filter in the double-cone rotary vacuum drying machine cannot be damaged while the inner part of the double-cone rotary vacuum drying machine is ensured to be clean.

Description

Technical Field

[0001] This utility model relates to the technical field of double cone rotary vacuum dryers, specifically a double cone rotary vacuum dryer that is easy to clean. Background Technology

[0002] The double-cone rotary vacuum dryer is a double-cone shaped rotating tank. Under vacuum conditions, steam or hot water is introduced into the jacket for heating. The heat comes into contact with the wet material through the inner wall of the tank. The water vapor evaporated after the wet material absorbs heat is drawn away by the vacuum pump through the vacuum exhaust pipe. Because the tank is under vacuum and the rotation of the tank causes the material to constantly tumble up and down, inside and out, the drying speed is accelerated, drying efficiency is improved, and uniform drying is achieved. The double-cone rotary vacuum dryer system mainly consists of the double-cone rotary vacuum dryer, condenser, dust collector, vacuum extraction system, heating system, cooling system, and electrical control system.

[0003] However, existing double-cone rotary vacuum dryers have protruding vacuum filters inside, which causes interference between the operation of the internal cleaning device and the vacuum filter. Furthermore, the main shaft axis of the internal cleaning device in existing double-cone rotary vacuum dryers coincides with the feed inlet of the double-cone rotary vacuum dryer, affecting the feeding or discharging of materials after the cleaning device is installed. Therefore, it does not meet the current requirements. To address this, we propose a double-cone rotary vacuum dryer that is easier to clean. Utility Model Content

[0004] The purpose of this utility model is to provide a double cone rotary vacuum dryer that is easy to clean, in order to solve the problems mentioned in the background art, such as the existing double cone rotary vacuum dryer having a protruding vacuum filter inside, which causes interference between the operation of the internal cleaning device and the vacuum filter, and the main shaft axis of the internal cleaning device of the existing double cone rotary vacuum dryer coinciding with the feed inlet of the double cone rotary vacuum dryer, which affects the feeding or discharging of the double cone rotary vacuum dryer after the cleaning device is installed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-cone rotary vacuum dryer that is easy to clean, comprising a fixed base, two drive shafts rotatably mounted on the inner side of the top of the fixed base, a drying tank fixed between the two drive shafts, two fixed rods with overlapping axes fixed on the inner side of the drying tank, a central ball fixed between the two fixed rods, two double-headed motors fixed inside the central ball, and rotating shafts fixed at both ends of the double-headed motors. The rotating shafts are rotatably connected to the central ball through roller bearings, and one end of the rotating shaft extends to the outside of the central ball. A rotating connecting rod is fixed to the outer end of the rotating shaft, and cleaning scrapers are fixed at both ends of the rotating connecting rod. The cleaning scrapers are in contact with the inner wall of the drying tank.

[0006] Preferably, both ends of the rotating connecting rod are bent at a 45-degree angle, and the bent ends of the rotating connecting rod are perpendicular to the inner wall of the drying tank.

[0007] Preferably, the axes of the two fixed rods are perpendicular to the axes of the two drive spindles and are on the same horizontal plane, and the axes of the fixed rods are perpendicular to the axis of the feed inlet of the drying tank.

[0008] Preferably, one of the drive spindles is axially connected to a steam input pipe, and the other drive spindle is axially connected to a vacuum pipe.

[0009] Preferably, one end of the vacuum tube extends into the interior of the drying tank and the end is curved upwards, and a vacuum filter is fixed to the end of the vacuum tube extending into the interior of the drying tank.

[0010] Preferably, two symmetrical auxiliary cleaning strips are fixed on the outer surface of the end of the rotating shaft located outside the central sphere. The distance between two adjacent auxiliary cleaning strips is equal to the diameter of the fixed rod. The auxiliary cleaning strips are arc-shaped and their centers coincide with the center of the central sphere.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a rotating connecting rod with both ends bent at a 45-degree angle to support the cleaning scraper, so that the cleaning scraper fits against the inner surface of the drying tank. When the cleaning scraper rotates around the axis of the rotating shaft and cleans the inside of the drying tank, the rotating connecting rod will not come into contact with the vacuum filter, ensuring that the inside of the double cone rotary vacuum dryer is cleaned without damaging the vacuum filter inside the double cone rotary vacuum dryer.

[0013] 2. This utility model supports and fixes the central ball with two fixing rods, and the two fixing rods are perpendicular to the material inlet axis of the drying tank, so as not to affect the feeding and discharging of the double cone rotary vacuum dryer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of the drying tank of this utility model;

[0016] Figure 3 This is a cross-sectional view of the central sphere of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the fixing rod of this utility model.

[0018] In the diagram: 1. Fixed base; 2. Drive spindle; 3. Drying tank; 4. Steam input pipe; 5. Vacuum pipe; 6. Vacuum filter; 7. Center ball; 8. Rotating shaft; 9. Rotating connecting rod; 10. Cleaning scraper; 11. Fixed rod; 12. Dual-head motor; 13. Auxiliary cleaning strip. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 4 As shown, a double-cone rotary vacuum dryer that is easy to clean includes a fixed base 1. Two drive shafts 2 are rotatably mounted on the inner side of the top of the fixed base 1. A drying tank 3 is fixed between the two drive shafts 2. Two fixed rods 11 with coincident axes are fixed inside the drying tank 3. The axes of the two fixed rods 11 are perpendicular to the axes of the two drive shafts 2 and are on the same horizontal plane. The axes of the fixed rods 11 are perpendicular to the axis of the feed inlet of the drying tank 3. The fixed rods 11 will not obstruct the feed inlet of the drying tank 3 and will not affect the entry and exit of materials inside the drying tank 3.

[0021] A central ball 7 is fixed between the two fixed rods 11. Two dual-head motors 12 are fixed inside the central ball 7. An independent storage battery is also installed inside the central ball 7 to power the dual-head motors 12. The electrodes of the storage battery are connected to wires. The wires pass through one of the fixed rods 11 and the drying tank 3 and extend to the outside of the drying tank 3. The end of the wire extending to the outside of the drying tank 3 is connected to a connector. The connector is fixed to the outer surface of the drying tank 3. The storage battery is charged using the connector and the wires.

[0022] Both ends of the dual-head motor 12 are fixed with rotating shafts 8. The rotating shafts 8 are rotatably connected to the central ball 7 through roller bearings, and one end of the rotating shaft 8 extends to the outside of the central ball 7. A rotating connecting rod 9 is fixed to the outer end of the rotating shaft 8. Both ends of the rotating connecting rod 9 are fixed with cleaning scrapers 10. The cleaning scrapers 10 are in contact with the inner wall of the drying tank 3. The dual-head motor 12 drives the rotating shafts 8 and the rotating connecting rod 9 to rotate, so that the rotating connecting rod 9 drives the cleaning scrapers 10 to slide in contact with the drying tank 3, thereby cleaning the back of the drying tank 3.

[0023] Both ends of the rotating connecting rod 9 are bent at a 45-degree angle. The bent ends of the rotating connecting rod 9 are perpendicular to the inner wall of the drying tank 3. The bent ends of the rotating connecting rod 9 ensure that the rotating connecting rod 9 does not come into contact with the vacuum filter 6 when it rotates with the rotating shaft 8, thus avoiding interference between the rotating connecting rod 9 and the vacuum filter 6 during cleaning and preventing damage to the vacuum filter 6.

[0024] One of the drive spindles 2 is axially connected to a steam input pipe 4, and the other drive spindle 2 is axially connected to a vacuum pipe 5. One end of the vacuum pipe 5 extends into the interior of the drying tank 3 and is upturned. A vacuum filter 6 is fixed to the end of the vacuum pipe 5 that extends into the interior of the drying tank 3. The interior of the drying tank 3 is evacuated through the vacuum pipe 5 and the vacuum filter 6. The vacuum filter 6 intercepts impurities in the airflow during the evacuation process. The steam input pipe 4 delivers steam into the interior of the drying tank 3 to dry the material.

[0025] Two symmetrical auxiliary cleaning strips 13 are fixed on the outer surface of the end of the rotating shaft 8 outside the central ball 7. The distance between two adjacent auxiliary cleaning strips 13 is equal to the diameter of the fixed rod 11. The auxiliary cleaning strips 13 are arc-shaped and their centers coincide with the center of the central ball 7. When the rotating shaft 8 rotates, it drives the auxiliary cleaning strips 13 to slide against the outer surface of the central ball 7, thereby cleaning the material adhering to the outer surface of the central ball 7.

[0026] Working principle: When cleaning the double cone rotary vacuum dryer after use, first turn off the power supply to the drive structure connected to the drive spindle 2, and start the double-head motor 12. After the double-head motor 12 is powered on, it drives the two rotating shafts 8 to rotate around the axis of the double-head motor 12. When the rotating shafts 8 rotate, they drive the rotating connecting rod 9 and the cleaning scraper 10 at the end of the rotating connecting rod 9 to make a circular motion around the axis of the rotating shaft 8. Since the end of the rotating connecting rod 9 is bent at a 45-degree angle, while the rotating connecting rod 9 drives the cleaning scraper 10 to slide against the inner wall of the drying tank 3, the end of the rotating connecting rod 9 will not come into contact with the vacuum filter. 6. Contact is made to avoid interference between the rotating connecting rod 9 and the vacuum filter 6 during cleaning, which could damage the vacuum filter 6. While the rotating connecting rod 9 drives the cleaning scraper 10 to clean the inner wall of the drying tank 3, the rotating shaft 8 drives the auxiliary cleaning strip 13 to rotate simultaneously with the rotating connecting rod 9. The auxiliary cleaning strip 13 slides against the outer surface of the central ball 7, cleaning the material adhering to the outer surface of the central ball 7. This ensures that the inside of the double cone rotary vacuum dryer is cleaned without damaging the vacuum filter 6 inside the double cone rotary vacuum dryer.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-cone rotary vacuum dryer that is easy to clean, comprising a fixed base (1), characterized in that: The top end of the fixed seat (1) is rotatably connected with two driving shafts (2), and a drying tank (3) is fixed between the two driving shafts (2). The inner side of the drying tank (3) is fixed with two fixed rods (11) with coinciding axes, and a center ball (7) is fixed between the two fixed rods (11). The inner part of the center ball (7) is fixed with two double-head motors (12), and the two ends of the double-head motor (12) are fixed with rotating shaft rods (8). The rotating shaft rods (8) are rotatably connected with the center ball (7) through roller bearings, and one end of the rotating shaft rod (8) extends to the outside of the center ball (7). The outer end of the rotating shaft rod (8) is fixed with a rotating connecting rod (9), and the two ends of the rotating connecting rod (9) are fixed with cleaning scrapers (10) which are attached to the inner wall of the drying tank (3).

2. The double-cone rotary vacuum dryer of claim 1, wherein: The two ends of the rotating connecting rod (9) are bent at an angle of 45 degrees, and the bent ends of the rotating connecting rod (9) are perpendicular to the inner wall of the drying tank (3).

3. The double-cone rotary vacuum dryer of claim 1, wherein: The axes of the two fixed rods (11) are perpendicular to the axes of the two driving shafts (2) and are in the same horizontal plane, and the axis of the fixed rod (11) is perpendicular to the axis of the feed inlet of the drying tank (3).

4. The double-cone rotary vacuum dryer of claim 1, wherein: The axis of one of the driving shafts (2) is inserted with a steam input pipe (4), and the axis of the other driving shaft (2) is inserted with a vacuum extraction pipe (5).

5. A double-cone rotary vacuum dryer for facilitating cleaning according to claim 4, characterized in that: One end of the vacuum extraction pipe (5) extends to the inside of the drying tank (3) and the end is upwardly curved, and the end of the vacuum extraction pipe (5) extending to the inside of the drying tank (3) is fixed with a vacuum filter (6).

6. The double-cone rotary vacuum dryer of claim 1, wherein: The outer surface of the end of the rotating shaft rod (8) outside the center ball (7) is fixed with two position-symmetric auxiliary cleaning strips (13), and the distance between the two adjacent auxiliary cleaning strips (13) is equal to the diameter of the fixed rod (11). The auxiliary cleaning strips (13) are arc-shaped and the center is coincided with the center of the center ball (7).

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