CN219829344U - a vacuum dryer - Google Patents

Abstract

The utility model relates to the technical field of dryers, in particular to a vacuum dryer, which comprises a bracket, wherein a dryer body is arranged on the bracket, a transversely extending central shaft is rotatably arranged in the dryer body, the central shaft is hollow, a plurality of stirring rods are uniformly and fixedly arranged on the central shaft at intervals along the length direction, a plurality of exhaust pipes are also uniformly and fixedly arranged on the central shaft at intervals along the length direction, one ends of the exhaust pipes are communicated with an inner cavity of the central shaft, a sealing head is fixedly arranged at one end of the exhaust pipe far away from the central shaft, a plurality of ventilation holes are uniformly distributed on the sealing head, one end of the central shaft extends to the outer side of the dryer body and is provided with a rotary joint, the rotary joint is connected with a vacuum pump through a pipeline, and a driving motor for driving the central shaft to rotate is arranged on the dryer body; because a plurality of exhaust tubes are evenly spaced along the length direction of the central shaft, the hot steam in the dryer body is evenly extracted, the drying of the materials is more uniform, and the drying efficiency of the materials is higher.

Description

a vacuum dryer

Technical field

The utility model relates to the technical field of dryers, in particular to a vacuum dryer.

Background technique

Vacuum drying is to heat and dry the material to be dried under vacuum conditions. It uses a vacuum pump to extract air and moisture, so that the working room is in a vacuum state, which greatly speeds up the drying rate of materials and saves energy at the same time.

The utility model patent with application number CN201922372620.9 discloses a vacuum rake dryer, which includes a drying box. Support legs are fixedly connected to the bottom surface of the drying box, and thermal oil inlets are fixedly connected to the top and bottom of the drying box. and the thermal oil outlet. The top center surface of the drying box is fixedly connected with a feeding pipe. The surface of the feeding pipe is fixedly connected with a vacuum tube. Both sides of the bottom of the drying box are fixedly connected with discharge pipes. The interior of the drying box is provided with a device to facilitate the discharging. , the convenient discharging device includes bearings. This vacuum rake dryer is equipped with a discharging device inside the drying box. The discharging device includes a bearing. The outer ring of the bearing is fixedly connected to the inner wall of one side of the drying box, so that after drying in the drying box is completed, It is convenient to export the dried materials, making the export completely clean, and preventing the existing stranded materials from being incompletely exported and needing to open the drying box for processing later, resulting in increased costs.

However, the above-mentioned dryer only evacuates the drying box through the vacuum tube provided on the feeding pipe. The hot steam in the drying box cannot be evenly extracted, resulting in inconsistent drying efficiency of the material, uneven drying of the material, and increased energy consumption. Consumption.

Utility model content

The technical problem to be solved by this utility model is to provide a vacuum dryer that can pump air evenly, so as to solve the technical problem of uneven air pumping in existing dryers.

In order to solve the above technical problems, the technical solution of the present invention is: a vacuum dryer, which includes a bracket, a dryer body is provided on the bracket, and a transversely extending central axis is rotatably installed in the dryer body. The central shaft is hollow, and a plurality of stirring rods are fixedly installed on the central shaft at even intervals along the length direction. The central shaft is also provided with a plurality of air extraction tubes evenly spaced along the length direction. One end of the air extraction tube is connected to the The inner cavities of the central shaft are connected. A plugging head is fixedly installed on one end of the air extraction tube away from the central shaft. A plurality of ventilation holes are evenly distributed on the plugging head. One end of the central shaft extends to the A rotary joint is installed on the outside of the dryer body. The rotary joint is connected to a vacuum pump through a pipeline. A drive motor for driving the central shaft to rotate is installed on the dryer body.

As a further improvement, an arc-shaped baffle is provided above the central axis corresponding to the air extraction pipe, and bristles are provided at the bottom of the baffle. When the central axis rotates, the blocking head and the The bristles are in contact.

As a further improvement, a vertically extending casing is fixedly installed on the inside of the top wall of the dryer body, a slot is provided at the lower end of the casing, and a vertically extending movable column is fixedly installed on the top of the baffle. , the movable column is movably installed in the casing, the movable column is provided with a vertically fixed chute pin, the casing is provided with a strip groove matching the chute pin, the The strip groove extends vertically, and a spring is connected between the upper end of the movable column and the top wall of the slot; a support plate is fixedly installed at the bottom of the baffle, and an arc-shaped The central shaft is provided with a dial for pushing the protrusion to move upward.

As a further improvement, the dryer body has a cylindrical shape arranged laterally, a feeding pipe is provided at the top of the dryer body, and a discharge pipe is provided at the bottom of one end of the dryer body; the dryer body is close to the One end of the discharge pipe is hinged on the bracket, and a hydraulic cylinder is hinged between the end of the dryer body away from the discharge pipe and the bracket.

As a preferred technical solution, the bracket includes an upper support plate and a lower support plate, and a spring column is installed between the upper support plate and the lower support plate; one end of the dryer body close to the discharge pipe is hinged On the upper support plate, the cylinder body of the hydraulic cylinder is hinged on the upper support plate, and the piston rod of the hydraulic cylinder is hinged on one end of the dryer body away from the discharge pipe; A vibration motor is installed at the bottom of the support plate.

After adopting the above technical solution, the beneficial effects of the present utility model are:

(1) In this application, multiple air extraction pipes are evenly spaced along the length of the central axis, so that the hot steam in the dryer body is evenly extracted, the material is dried more evenly, and the material drying efficiency is higher;

(2) The baffle of this application can reduce the material raised by the mixing rod from falling onto the plugging head, and the plugging head can be cleaned by brushing when the central axis rotates, thereby avoiding the ventilation holes on the plugging head. blockage; blockage

(3) In this application, when the material is dried, the right end of the dryer body is raised by the extension of the hydraulic cylinder, so that the material in the dryer body slides to the left towards the discharge pipe, thereby accelerating the discharge of the material from the dryer body;

(4) In this application, when the material is discharged from the dryer body, the vibration motor drives the upper support plate to vibrate, and then the upper support plate drives the dryer body to vibrate, thereby vibrating the material adhered to the inner wall of the dryer body and reducing the dryer Residues of materials in the body.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description These are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

Figure 2 is a schematic cross-sectional view of the dryer body according to the embodiment of the present invention;

Figure 3 is a partial enlarged view of part I in Figure 2;

Figure 4 is a schematic right view of Figure 3;

Figure 5 is a schematic structural diagram of an air extraction pipe according to an embodiment of the present invention.

In the picture: 1-bracket; 2-dryer body; 3-outer cylinder; 4-inner cylinder; 5-heat transfer oil inlet; 6-heat transfer oil outlet; 7-feeding pipe; 8-discharge pipe; 9- Central shaft; 10-drive motor; 11-transmission belt; 12-stirring rod; 13-exhaust pipe; 14-blocking head; 15-rotary joint; 16-baffle; 17-casing; 18-movable column; 19- Chute pin; 20-strip groove; 21-support plate; 22-bulge; 23-dial plate; 24-upper support plate; 25-lower support plate; 26-spring column; 27-hinge; 28-hydraulic cylinder ; 29-vibration motor; 30-spring.

Detailed ways

As shown in Figures 1 to 5, a vacuum dryer includes a bracket 1. A dryer body 2 is provided on the bracket 1. The dryer body 2 is in the shape of a horizontal cylinder. The dryer body 2 includes an outer cylinder 3 and a The inner cylinder 4 is arranged inside the outer cylinder 3. The inner cavity of the inner cylinder 4 is a space for material drying. There is a heating chamber between the outer cylinder 3 and the inner cylinder 4. The bottom of the dryer body 2 is provided with The heat transfer oil inlet 5 communicates with the heating cavity, and the top of the dryer body 2 is provided with a heat transfer oil outlet 6 connected with the heating cavity; the top of the dryer body 2 is also welded with a feeding pipe 7 connected with the inner cylinder 4, and the dryer body 2 A discharge pipe 8 connected to the inner cylinder 4 is welded to the bottom of the left end of 2. The materials are added into the dryer body 2 through the feeding pipe 7, and the thermal oil is injected into the heating cavity through the thermal oil inlet 5 to heat and dry the materials, and finally the dried materials are discharged through the discharge pipe 8.

As shown in Figure 2, a transversely extending central shaft 9 is installed in the dryer body 2 through bearing coaxial rotation. The central shaft 9 is hollow, the left end of the central shaft 9 is closed, and the right end of the central shaft 9 extends to the dryer body 2. On the outside, a motor mounting frame is welded to the top of the right end of the dryer body 2. A driving motor 10 for driving the central shaft 9 to rotate is installed on the motor mounting frame through bolts. The driving motor 10 is connected to the right end of the central shaft 9 by a transmission belt 11. A plurality of stirring rods 12 are welded to the central shaft 9 at even intervals along the length direction. When the central shaft 9 rotates, the stirring rods 12 can be driven to stir the materials in the dryer body 2 so that the materials are evenly distributed. A plurality of air extraction pipes 13 are also welded to the central shaft 9 at even intervals along the length direction. The air extraction pipes 13 are staggered with the stirring rods 12. The air extraction pipes 13 extend along the radial direction of the central shaft 9. The inner cavities are connected, and the end of the air extraction tube 13 away from the central axis 9 is screwed with a blocking head 14. The blocking head 14 is evenly distributed with a plurality of ventilation holes to prevent large pieces of material from entering the air extraction tube 13. The central axis 9 A rotary joint 15 is installed at the right end, and the rotary joint 15 is connected to the vacuum pump through a pipeline. When the vacuum pump is working, the hot steam in the dryer body 2 is extracted through the air extraction pipe 13, so that a negative pressure is formed in the dryer body 2, thereby accelerating the material drying efficiency in the dryer body 2; because multiple air extraction pipes 13 are along the central axis 9 are evenly spaced in the length direction, so that the hot steam in the dryer body 2 is evenly extracted, the material is dried more evenly, and the material drying efficiency is higher.

As shown in Figure 3, an arc-shaped baffle 16 is provided above the central axis 9 corresponding to the air extraction pipe 13. The baffle 16 can reduce the material lifted up by the mixing rod 12 from falling onto the blocking head 14. The bottom of the plate 16 is provided with bristles. When the central shaft 9 rotates, the blocking head 14 is brought into contact with the bristles. The bristles clean the blocking head 14 to avoid clogging of the ventilation holes on the blocking head 14.

As shown in Figure 4, a vertically extending casing 17 is installed on the inside of the top wall of the dryer body 2 by bolts. The lower end of the casing 17 is provided with a slot, and a vertically extending casing 17 is installed on the top of the baffle 16 by bolts. The movable column 18 is movably installed in the slot at the lower end of the casing 17. The movable column 18 is provided with a chute pin 19 that is screwed and arranged vertically with it. The side wall of the casing 17 is provided with a chute. The strip groove 20 matches the pin 19. The strip groove 20 extends vertically. The chute pin 19 slides up and down and is installed in the chute pin 19 to prevent the movable column 18 from being separated from the casing 17. The upper end of the movable column 18 is in contact with the slot. A spring 30 is connected between the top walls; the left and right ends of the bottom of the baffle 16 are welded with support plates 21, the bottom of the support plate 21 is provided with arc-shaped protrusions 22, and the central axis 9 is welded with protrusions for pushing The paddle 23 moves upward. When the central shaft 9 rotates, the dial plate 23 is driven to rotate. When the dial plate 23 rotates to contact the protrusion 22 at the bottom of the support plate 21, the dial plate 23 acts on the protrusion 22 and pushes the baffle 16 and the movable column 18 along the casing. 17 moves upward and compresses the spring 30; when the dial plate 23 rotates to separate from the protrusion 22, the compressed spring 30 stretches and pushes the movable column 18 and the baffle 16 to move downward, so that the dial plate 23 and the spring 30 cooperate The baffle 16 is caused to vibrate up and down, thereby shaking down the materials lifted by the stirring rod 12 and falling onto the baffle 16 .

As shown in Figure 1, the bracket 1 includes an upper support plate 24 and a lower support plate 25 located below the upper support plate 24. A spring column 26 is installed between the upper support plate 24 and the lower support plate 25 through bolts. The dryer body 2 The bottom of the left end of the dryer body 2 is hinged to the upper support plate 24 through a hinge 27. A hydraulic cylinder 28 is hinged between the right end of the dryer body 2 and the bracket 1. In the tank, the piston rod of the hydraulic cylinder 28 is hinged at the bottom of the right end of the dryer body 2 . When the material is dried, the right end of the dryer body 2 is raised by the extension of the hydraulic cylinder 28, so that the material in the dryer body 2 slides to the left toward the discharge pipe 8, thereby accelerating the discharge of the material from the dryer body 2.

A vibration motor 29 is installed at the bottom of the upper support plate 24 through bolts. When the material is discharged from the dryer body 2, the vibration motor 29 drives the upper support plate 24 to vibrate, and then the upper support plate 24 drives the dryer body 2 to vibrate, thereby removing the adhesive. The material on the inner wall of the dryer body 2 is vibrated down, thereby reducing the residual material in the dryer body 2 .

The basic principles, main features and advantages of the present utility model are shown and described above. Those skilled in the industry should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model can be There will also be various changes and improvements in the new model, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A vacuum dryer, characterized in that: it includes a bracket, a dryer body is provided on the bracket, a transversely extending central axis is rotatably installed in the dryer body, the central axis is hollow, and the center A plurality of stirring rods are fixedly installed on the shaft at even intervals along the length direction. The central shaft is also provided with a plurality of air extraction pipes evenly spaced along the length direction. One end of the air extraction pipe is connected with the inner cavity of the central shaft. A plugging head is fixedly installed on one end of the air extraction pipe away from the central axis. A plurality of ventilation holes are evenly distributed on the plugging head. One end of the central axis extends to the outside of the dryer body and is installed with a plugging head. A rotary joint is connected to a vacuum pump through a pipeline, and a driving motor for driving the central shaft to rotate is installed on the dryer body. 2. A vacuum dryer according to claim 1, characterized in that: an arc-shaped baffle is provided above the central axis corresponding to the exhaust pipe, and bristles are provided at the bottom of the baffle. , when the central shaft rotates, the blocking head is brought into contact with the bristles. 3. A vacuum dryer according to claim 2, characterized in that: a vertically extending sleeve is fixedly installed on the inside of the top wall of the dryer body, and a slot is provided at the lower end of the sleeve. A vertically extending movable column is fixedly installed on the top of the baffle, and the movable column is movably installed in the casing. The movable column is provided with a vertically fixed chute pin, and the casing is provided with a The chute pin matches the strip groove, the strip groove extends vertically, and a spring is connected between the upper end of the movable column and the top wall of the slot; the bottom of the baffle is fixedly installed with A support plate, the bottom of the support plate is provided with an arc-shaped protrusion, and the central axis is provided with a dial for pushing the protrusion to move upward. 4. A vacuum dryer according to claim 1, characterized in that: the dryer body is in the shape of a transverse cylinder, a feeding pipe is provided on the top of the dryer body, and a feeding pipe is provided at one end of the dryer body. A discharge pipe is provided at the bottom; one end of the dryer body close to the discharge pipe is hinged on the bracket, and a hydraulic cylinder is hinged between the end of the dryer body away from the discharge pipe and the bracket. . 5. A vacuum dryer according to claim 4, characterized in that: the bracket includes an upper support plate and a lower support plate, and a spring column is installed between the upper support plate and the lower support plate; One end of the dryer body close to the discharge pipe is hinged on the upper support plate, the cylinder body of the hydraulic cylinder is hinged on the upper support plate, and the piston rod of the hydraulic cylinder is hinged on the dryer. One end of the body away from the discharge pipe; a vibration motor is installed at the bottom of the upper support plate.