Double-cone rotary vacuum dryer

Abstract

The utility model relates to the technical field of drying machines, in particular to a double-cone rotary vacuum drying machine which comprises a rack, a tank body and a first driving device, a rotating shaft is arranged in the tank body, a plurality of connecting rods are arranged on the outer wall of the rotating shaft, scrapers are arranged at the ends of the connecting rods, a driving arm is arranged at one end of the tank body, and the driving arm is connected with the tank body. The driving arm is connected with one end of the rotating shaft, a second driving device is arranged on the outer side of the tank body, the driving arm is in contact with the second driving device after rotating to the position of the second driving device, and the second driving device drives the driving arm to rotate. The driving arm is arranged at one end of the tank body, and the second driving device for driving the driving arm to rotate is arranged outside the tank body, so that the rotating shaft and the scraping plate in the tank body can be driven to rotate synchronously, materials on the inner wall of the tank body are scraped off, and the materials are prevented from adhering to the wall. The drying device is reasonable in design, materials are attached to the wall, drying efficiency is improved, and properties of the materials are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of drying machines, in particular to a double-cone rotary vacuum drying machine. Background Art

[0002] The double cone rotary vacuum dryer is a double cone rotary tank. In the vacuum state, steam or hot water is introduced into the jacket for heating. The heat contacts the wet material through the inner wall of the tank. The water vapor evaporated by the wet material after absorbing heat is pumped away through the vacuum exhaust pipe by the vacuum pump. Since the tank is in a vacuum state and the rotation of the tank makes the material constantly turn upside down and inside and outside, the drying speed of the material is accelerated, the drying efficiency is improved, and the purpose of uniform drying is achieved. The double cone rotary vacuum dryer has the advantages of fast drying speed, low pollution, and no damage to the intrinsic quality of the dried material.

[0003] However, there are many problems with traditional rotary vacuum dryers, such as the easy occurrence of material wall formation, which will not only affect the mass transfer and heat transfer inside the dryer and the drying efficiency, but also affect the properties of the material. Prior art CN117073312A discloses a double-cone dryer with an agitator, wherein a stirring rod is arranged inside the tank body, and a motor for driving the stirring rod to rotate is arranged at one end of the tank body, thereby driving the scraper to rotate and scraping off the material adhering to the inner wall. Although the prior art can prevent the material from wall formation, the driving motor is installed at one end of the feeding port or the discharging port of the tank body. When the tank body is rotating, the driving motor rotates synchronously with the tank body when it is powered on. Not only does the load and imbalance of the tank body during rotation increase the investment cost of the equipment, but it also increases production safety hazards. Utility Model Content

[0004] The utility model aims to provide a double-cone rotary vacuum dryer to address the deficiencies of the prior art. The utility model has a reasonable design, can form walls for materials, improves drying efficiency, and ensures the properties of materials.

[0005] The utility model solves the technical problem by adopting the following technical solution: a double-cone rotary vacuum dryer comprises a frame, the frame is rotatably connected with a tank body with a jacket, the tank body is connected with a first driving device driving the tank body to rotate, a vacuum exhaust system and a rotating shaft coaxial with the tank body are arranged inside the tank body, the rotating shaft is connected with the inner wall of the tank body through a bracket, a plurality of connecting rods are arranged on the outer wall of the rotating shaft, a scraper is arranged at the end of the connecting rod, and the end of the scraper can contact with the inner wall of the tank body, a driving arm is arranged at one end of the tank body, the driving arm passes through one end of the tank body and is connected with one end of the rotating shaft, a second driving device is arranged on the outer side of the tank body, the driving arm contacts with the second driving device after rotating to the position of the second driving device, and the second driving device drives the driving arm to rotate.

[0006] Furthermore, the second driving device includes a thrust arm and a driving unit for driving the thrust arm to rotate, and after the driving arm rotates to the second driving device position, the driving arm contacts the thrust arm.

[0007] Furthermore, the driving arm is in the shape of a fork in the horn.

[0008] Furthermore, the width of the thrust arm is greater than the width of the driving arm.

[0009] Furthermore, both ends of the rotating shaft are rotatably connected to the bracket via bearings.

[0010] Furthermore, it also includes a proximity switch, which is located outside the tank body.

[0011] Furthermore, it also includes a PLC controller, the driving unit is a motor, and the PLC controller is electrically connected to the driving unit, the first driving device and the proximity switch.

[0012] The utility model has the following beneficial effects: a double-cone rotary vacuum dryer, comprising a frame, the frame is rotatably connected with a tank body with a jacket, the tank body is connected with a first driving device for driving the tank body to rotate, a vacuum exhaust system and a rotating shaft coaxial with the tank body are arranged inside the tank body, the rotating shaft is connected with the inner wall of the tank body through a bracket, the outer wall of the rotating shaft is provided with a plurality of connecting rods, a scraper is arranged at the end of the connecting rod, and the end of the scraper can contact the inner wall of the tank body, a driving arm is arranged at one end of the tank body, the driving arm passes through one end of the tank body and is connected with one end of the rotating shaft, a second driving device is arranged outside the tank body, the driving arm contacts the second driving device after rotating to the position of the second driving device, and the second driving device drives the driving arm to rotate. By arranging a driving arm at one end of the tank body and arranging a second driving device for driving the driving arm to rotate outside the tank body, the rotating shaft and the scraper inside the tank body can be driven to rotate synchronously, the material on the inner wall of the tank body can be scraped off, and the material can be prevented from caking the wall. The utility model has reasonable design, can form walls for materials, improves drying efficiency and ensures the properties of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial structural schematic diagram of the utility model.

[0015] Description of reference numerals:

[0016] 1——frame, 2——tank body, 3——first driving device, 4——rotating shaft, 5——bracket, 6——connecting rod, 7——scraper, 8——driving arm, 9——second driving device, 91——thrust arm. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0018] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 , Figure 2As shown, a double-cone rotary vacuum dryer of the present embodiment comprises a frame 1, wherein the frame 1 is rotatably connected to a tank body 2 with a jacket, the jacket layer of the tank body 2 is connected to a heat exchange medium or a heat source, the tank body 2 is connected to a first driving device 3 for driving the tank body 2 to rotate, a vacuum exhaust system and a rotating shaft 4 coaxial with the tank body 2 are arranged inside the tank body 2, the rotating shaft 4 is connected to the inner wall of the tank body 2 through a bracket 5, a plurality of connecting rods 6 are arranged on the outer wall of the rotating shaft 4, a scraper 7 is arranged at the end of the connecting rod 6, the end of the scraper 7 can contact the inner wall of the tank body 2, a driving arm 8 is arranged at one end of the tank body 2, the driving arm 8 is located outside the tank body 2, and the driving arm 8 passes through one end of the tank body 2 and is connected to one end of the rotating shaft 4. The driving arm 8 is rotatably connected to the tank body 2 through a sealed bearing. The other end of the double-cone tank body 2 is provided with an opening, which is sealed and connected through a cover body. Feeding and unloading can be achieved through the opening. A second driving device 9 is provided on the outside of the tank body 2. The second driving device 9 does not contact the tank body 2. The second driving device 9 is located on the circumferential surface of the tank body 2. The second driving device 9 can be located on the left or right side of the tank body 2, or below the tank body 2. After the driving arm 8 rotates to the position of the second driving device 9, it contacts the second driving device 9, and the second driving device 9 drives the driving arm 8 to rotate.

[0021] The working principle of the utility model is: open the heat exchange medium or heat source of the jacket layer of the tank body 2 to heat the inner wall of the tank body 2; add raw materials into the tank body 2 from the opening, seal the tank body 2 through the cover body, and then the vacuum exhaust system will evacuate the inside of the tank body 2, and the first drive device 3 will drive the tank body 2 to rotate to dry the material. During the rotation of the tank body 2, when the drive arm 8 rotates to the position of the second drive device 9, the drive arm 8 contacts the second drive device 9, and the second drive device 9 guides the drive arm 8 to rotate, and synchronously drives the rotating shaft 4 inside the tank body 2 to rotate. During the rotation of the rotating shaft 4, the scraper 7 contacts the inside of the tank body 2 to scrape off the material adhering to the inside of the tank body 2 to avoid the material from forming a wall and affecting the drying effect.

[0022] The second driving device 9 includes a thrust arm 91 and a driving unit for driving the thrust arm 91 to rotate. After the driving arm 8 rotates to the position of the second driving device 9, the driving arm 8 contacts the thrust arm 91. When the driving arm 8 contacts the thrust arm 91, the driving unit drives the thrust arm 91 to rotate. During the rotation of the thrust arm 91, the driving arm 8 is guided to rotate, thereby causing the rotating shaft 4 in the tank body 2 to rotate. After the driving arm 8 is rotated until it is separated from the thrust guiding effect of the thrust arm 91, under the action of the first driving device 3, the tank body 2 rotates, and the driving arm 8 rotates synchronously with the tank body 2 until the driving arm 8 rotates to the position of the second driving device 9 again. The thrust arm 91 continues to push the driving arm 8 to rotate, and synchronously drives the rotating shaft 4 to continue to rotate. This is repeated, so that the scraper 7 scrapes the material on the inner wall of the tank body 2 to prevent the material from clumping on the wall.

[0023] The driving arm 8 is in the shape of a fork, which is beneficial to increasing the contact area between the driving arm 8 and the second driving device 9. The width of the thrust arm 91 is greater than the width of the driving arm 8, which makes it easier for the thrust arm 91 to guide and push the driving arm 8 to rotate.

[0024] Both ends of the rotating shaft 4 are rotatably connected to the bracket 5 via bearings, thereby improving the flexibility of the rotating shaft 4 and facilitating the driving arm 8 to drive the rotating shaft 4 to rotate.

[0025] It also includes a proximity switch, which is located outside the tank body 2, and a PLC controller. The drive unit is a motor. The PLC controller is electrically connected to the drive unit, the first drive device 3 and the proximity switch. The position of the drive arm 8 can be monitored by the proximity switch. The PLC controller controls the action or speed of the first drive device 3 and the drive unit according to the signal fed back by the proximity switch.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A double cone rotary vacuum dryer, characterized in that: The invention comprises a frame (1), wherein the frame (1) is rotatably connected to a tank body (2) with a jacket, wherein the tank body (2) is connected to a first driving device (3) for driving the tank body (2) to rotate, wherein a vacuum exhaust system and a rotating shaft (4) coaxial with the tank body (2) are arranged inside the tank body (2), wherein the rotating shaft (4) is connected to the inner wall of the tank body (2) via a bracket (5), wherein a plurality of connecting rods (6) are arranged on the outer wall of the connecting rod (6), and a scraper (7) is arranged at the end of the connecting rod (6). ), the end of the scraper (7) contacts the inner wall of the tank body (2), a driving arm (8) is provided at one end of the tank body (2), the driving arm (8) passes through one end of the tank body (2) and is connected to one end of the rotating shaft (4), a second driving device (9) is provided on the outer side of the tank body (2), the driving arm (8) contacts the second driving device (9) after rotating to the position of the second driving device (9), and the second driving device (9) drives the driving arm (8) to rotate.

2. A double cone rotary vacuum dryer according to claim 1, characterized in that: The second driving device (9) comprises a thrust arm (91) and a driving unit for driving the thrust arm (91) to rotate; after the driving arm (8) rotates to the position of the second driving device (9), the driving arm (8) contacts the thrust arm (91).

3. A double cone rotary vacuum dryer according to claim 1, characterized in that: The driving arm (8) is in the shape of a sheep's horn fork.

4. A double cone rotary vacuum dryer according to claim 2, characterized in that: The width of the thrust arm (91) is greater than the width of the drive arm (8).

5. A double cone rotary vacuum dryer according to claim 1, characterized in that: Both ends of the rotating shaft (4) are rotatably connected to the bracket (5) via bearings.

6. A double cone rotary vacuum dryer according to claim 1, characterized in that: It also includes a proximity switch, which is located outside the tank body (2).

7. A double cone rotary vacuum dryer according to claim 2, characterized in that: It also includes a PLC controller, the drive unit is a motor, and the PLC controller is electrically connected to the drive unit, the first drive device (3) and the proximity switch.

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