Vacuum pipeline system of double-cone vacuum drier

Abstract

The utility model discloses a vacuum pipeline system of a double-cone vacuum dryer, which belongs to the technical field of double-cone vacuum dryers and comprises a vacuum tank, one side of the vacuum tank is communicated with a vacuum pipeline, a heat tracing pipeline is arranged in the vacuum pipeline, a rotating mechanism is arranged on the vacuum pipeline, and one side of the vacuum pipeline is communicated with a buffer mechanism; the built-in heat tracing pipe is arranged in the vacuum pipeline of the drying machine, so that the temperature in the vacuum pipeline of the drying machine is increased, materials easy to sublimate are prevented from desublimating in the vacuum pipeline of the drying machine and blocking the vacuum pipeline of the drying machine, the sublimated materials are desublimated by cooling in the vacuum buffer tank, and then a heat medium is introduced to dissolve and discharge solid materials. The vacuum degree of the dryer in the drying process is guaranteed, and the drying effect of the dryer is greatly improved.

Description

Technical Field

[0001] This application belongs to the technical field of double-cone vacuum dryers, and particularly relates to a vacuum pipeline system for a double-cone vacuum dryer. Background Art

[0002] In the process of using a double-cone vacuum dryer to dry solid materials (such as a solid mixture of 3,5-dimethylphenol, 4-chloro-3,5-dimethylphenol, 2-chloro-3,5-dimethylphenol, and 2,4-dichloro-3,5-dimethylphenol), the solid materials have the property of sublimation, and the sublimated materials will be evacuated by vacuum together with the solvent; when the sublimated materials pass through the vacuum pipeline of the dryer, due to the large temperature difference between the vacuum pipeline of the dryer and the tank body, the sublimated materials are prone to sublimation when they encounter cold, and turn back into solids, condensing in the vacuum pipeline of the dryer, slowly blocking the vacuum pipeline of the dryer, and the solvent in the tank body cannot be evacuated in time, resulting in large-area caking of the materials and poor drying effect of the dryer.

[0003] Patent CN208688109U discloses a double-cone rotary vacuum dryer with reasonable structural design, fast drying speed, which can avoid overloading of charging, and can cool the double-cone barrel after processing to facilitate the pouring out of the medicine. However, during the vacuum pumping process of the rotary vacuum dryer, the materials are easily blocked on the filter holes of the vacuum pipe, resulting in low efficiency of the equipment for pumping vacuum, and even unable to complete the vacuum pumping inside the barrel.

[0004] Patent CN117889617A provides a rotary vacuum dryer that is not easily blocked. The anti-blocking component on the vacuum filter head can reduce the blockage of materials on the vacuum filter head, improving the reliability of the negative pressure component. However, it still cannot prevent the sublimable materials from blocking in the vacuum pipeline, affecting the drying effect of the dryer. Utility Model Content

[0005] This application provides a vacuum pipeline system for a double-cone vacuum dryer, which solves the problem that sublimable materials sublime and block the vacuum pipeline of the dryer.

[0006] An embodiment of this application provides a vacuum pipeline system for a double-cone vacuum dryer, including a vacuum tank body, a vacuum pipeline is connected to one side of the vacuum tank body, a heat tracing pipeline is arranged in the vacuum pipeline, a rotating mechanism is arranged on the vacuum pipeline, and a buffer mechanism is connected to one side of the vacuum pipeline.

[0007] In one embodiment,

[0008] The vacuum pipeline includes a vacuum filter head arranged in the vacuum tank body, one end of the vacuum filter head is connected to a vacuum pipeline of the dryer, and the vacuum pipeline of the dryer extends to the outside of the vacuum tank body and is connected to a vacuum jacket pipeline through a rotary joint.

[0009] In one embodiment,

[0010] The number of the vacuum filter heads is 3, and the 3 vacuum filter heads are arranged radially and are all communicated with the vacuum pipeline of the dryer.

[0011] In one embodiment,

[0012] The rotating mechanism includes a rotating shaft, the rotating shaft is arranged on the outer periphery of the vacuum pipeline of the dryer and is fixedly connected with the vacuum tank body, a fixed bracket is rotatably connected to the rotating shaft, a transmission belt is arranged at one end of the rotating shaft close to the rotary joint, and a driving motor is arranged on the transmission belt.

[0013] In one embodiment,

[0014] Sealing rings are arranged on the rotary joint, and the number of the sealing rings is 2, which are respectively arranged on both sides of the rotary joint.

[0015] In one embodiment,

[0016] The tracing pipeline includes an internal tracing heat pipe arranged inside the vacuum pipeline of the dryer, the internal tracing heat pipe is U-shaped, and internal tracing heat pipe joints are respectively arranged at both U-shaped ends of the internal tracing heat pipe.

[0017] In one embodiment,

[0018] The buffering mechanism includes a vacuum buffer tank, one side of the upper part of the vacuum buffer tank is communicated with the vacuum jacketed pipeline, and the other side of the upper part of the vacuum buffer tank is communicated with a vacuum access pipeline; an inner extension pipe is arranged at the communication part of the vacuum buffer tank and the vacuum jacketed pipeline, and a support frame is arranged at the bottom of the vacuum buffer tank.

[0019] In one embodiment,

[0020] First flanges and second flanges are respectively arranged at both ends of the vacuum jacketed pipeline, and a third flange is arranged at one end of the vacuum access pipeline communicated with the vacuum buffer tank.

[0021] In one embodiment,

[0022] The internal tracing heat pipe joint extends out between the rotary joint and the first flange.

[0023] In one embodiment,

[0024] A heat medium inlet is arranged at one end of the vacuum jacketed pipeline close to the vacuum buffer tank, a heat medium outlet is arranged at the other end, a cooling coil is arranged inside the vacuum buffer tank, and a jacket is arranged outside the vacuum buffer tank.

[0025] The present application provides a vacuum pipeline system for a double-cone vacuum dryer. By arranging an internal heating pipe in the vacuum pipeline of the dryer, the temperature in the vacuum pipeline of the dryer is increased, preventing sublimable materials from sublimating in the vacuum pipeline of the dryer and blocking the vacuum pipeline of the dryer. And in the vacuum buffer tank, the sublimated materials are sublimated by cooling, and then a heat medium is introduced to dissolve and discharge the solid materials, ensuring the vacuum degree during the drying process of the dryer and greatly improving the drying effect of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the present utility model.

[0028] The symbols and markings in the drawings are explained as follows:

[0029] 1. Vacuum tank body; 2. Vacuum filter head; 3. Rotating shaft; 4. Vacuum pipeline of the dryer; 5. Internal heating pipe; 6. Fixed bracket; 7. Transmission belt; 8. Driving motor; 9. Sealing ring; 10. Rotary joint; 11. Joint of the internal heating pipe; 12. Vacuum jacketed pipeline; 13. Vacuum buffer tank; 14. Vacuum access pipeline; 15. Inner extension pipe; 161. First flange; 162. Second flange; 163. Third flange; 17. Heat medium inlet; 18. Heat medium outlet; 19. Cooling coil; 191. Cold medium inlet; 192. Cold medium outlet; 20. Jacket; 201. Jacket heat medium inlet; 202. Jacket heat medium outlet; 21. Support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application will be further described in detail. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] In one of the embodiments, a vacuum pipeline system for a double-cone vacuum dryer is as Figure 1 shown, including a vacuum tank body 1. One side of the vacuum tank body 1 is communicated with a vacuum pipeline. A heat tracing pipeline is arranged in the vacuum pipeline. A rotating mechanism is arranged on the vacuum pipeline. One side of the vacuum pipeline is communicated with a buffer mechanism.

[0032] Specifically, the vacuum tank body 1 is used to load the material to be dried, the vacuum pipeline is used to discharge the evaporated liquid, the heat tracing pipeline prevents the sublimated substance from staying in the vacuum pipeline, the rotating mechanism drives the vacuum tank body 1 to rotate, which better prevents the substance from sublimating and avoids blockage. The buffer mechanism can cause the sublimated material to sublimate again, facilitating discharge.

[0033] In one embodiment, the vacuum pipeline includes a vacuum filter head 2 disposed inside the vacuum tank body 1. One end of the vacuum filter head 2 is connected to a dryer vacuum pipeline 4. The dryer vacuum pipeline 4 extends outside the vacuum tank body 1 and is connected to a vacuum jacket pipeline 12 through a rotary joint 10. First flanges 161 and second flanges 162 are respectively provided at both ends of the vacuum jacket pipeline 12.

[0034] Specifically, the number of the vacuum filter heads 2 is at least 1. In this embodiment, there are 3 vacuum filter heads 2 which are arranged radially. One ends of the 3 vacuum filter heads 2 are radially distributed and penetrate at the other end. The 3 vacuum filter heads 2 are all connected to the dryer vacuum pipeline. The vacuum filter head 2 is used to filter large-particle impurities in the vacuum tank body 1 leading to the dryer vacuum pipeline 4 to prevent blocking the dryer vacuum pipeline 4. The rotary joint 10 enables the free rotation of the vacuum tank body 1 while ensuring the relative static state of the dryer vacuum pipeline 4 and the built-in heat tracing pipe 5. An O-shaped groove is formed in the middle of the rotary joint 10. The flange 161 is used to connect the dryer vacuum pipeline 4 and the vacuum jacket pipeline 12.

[0035] In one embodiment, the rotating mechanism includes a rotating shaft 3. The rotating shaft 3 is disposed on the outer periphery of the dryer vacuum pipeline 4 and is fixedly connected to the vacuum tank body 1. A fixed bracket 6 is rotatably connected to the rotating shaft 3. A transmission belt 7 is provided at one end of the rotating shaft 3 close to the rotary joint 10. A driving motor 8 is provided on the transmission belt 7.

[0036] Specifically, a sealing ring 9 is provided at the connection between the dryer vacuum pipeline 4 and the rotary joint 10. The sealing ring 9 is in an O shape and there are 2 sealing rings which are respectively disposed on both sides of the rotary joint 10 and cooperate with the O-shaped groove of the rotary joint 10. The rotary joint 10 and the rotating shaft 3 are connected by a flange. The dryer vacuum pipeline 4 passes through the O-shaped groove in the rotary joint 10, is sealed by the sealing ring 9, and then is connected to the flange 161. The rotating shaft 3 is in a T shape. The wider end of the T shape is fixedly connected to the vacuum tank body 1, and the other end is fixedly connected to the rotary joint 10. The fixed bracket 6 is rotatably connected to the rotating shaft 3 and is used to support the longer rotating shaft 3. The driving motor 8 provides power. The transmission belt 7 drives the rotating shaft 3 to rotate through the drive of the driving motor 8, so that the vacuum tank body 1 rotates synchronously with the rotating shaft 3.

[0037] In one embodiment, the tracing pipeline includes an in-built tracing pipe 5 disposed inside the vacuum pipeline 4 of the dryer. The in-built tracing pipe 5 is U-shaped, and in-built tracing pipe connectors 11 are respectively provided at both U-shaped ends of the in-built tracing pipe 5. The in-built tracing pipe connectors 11 extend out from the position between the rotary joint 10 and the first flange 161, and the other end of the in-built tracing pipe 5 extends into the vacuum filter head 2.

[0038] Specifically, both the vacuum pipeline 4 of the dryer and the in-built tracing pipe 5 pass through the O-shaped groove of the rotary joint 10 for fixation; the in-built tracing pipe 5 raises the temperature inside the vacuum pipeline 4 of the dryer, preventing sublimable materials from sublimating in the vacuum pipeline 4 of the dryer and blocking the vacuum pipeline 4 of the dryer. The in-built tracing pipe connectors 11 are used to connect the external heat exchange medium conveying pipeline.

[0039] The buffer mechanism includes a vacuum buffer tank 13. One side of the upper part of the vacuum buffer tank 13 is communicated with the vacuum jacketed pipeline 12, and the other side of the upper part of the vacuum buffer tank 13 is communicated with a vacuum access pipeline 14; an inner extension pipe 15 is provided at the connection between the vacuum buffer tank 13 and the vacuum jacketed pipeline 12, and a third flange 163 is provided at one end of the vacuum access pipeline 14 communicated with the vacuum buffer tank 13. A support frame 21 is provided at the bottom of the vacuum buffer tank 13.

[0040] Specifically, the vacuum jacketed pipeline 12 communicates the vacuum buffer tank 13 and the vacuum pipeline 4 of the dryer. The second flange 162 is used to connect the vacuum jacketed pipeline 12 and the inner extension pipe 15, and the third flange 163 is used to connect the vacuum access pipeline 14 and the vacuum buffer tank 13; the vacuum buffer tank 13 is used to load the sublimated materials conveyed by the vacuum pipeline 4 of the dryer, the vacuum access pipeline 14 is used to provide a vacuum environment for the vacuum buffer tank 13, and the inner extension pipe 15 guides the vacuum gas into the interior of the vacuum buffer tank 13, thereby improving the condensation effect of the cooling coil 19 on the sublimated materials; the support frame 21 is used to support the vacuum buffer tank 13.

[0041] In one embodiment, a heat medium inlet 17 is provided at one end of the vacuum jacketed pipeline 12 close to the vacuum buffer tank 13, a heat medium outlet 18 is provided at the other end, a cooling coil 19 is provided inside the vacuum buffer tank 13, and a jacket 20 is provided outside the vacuum buffer tank 13.

[0042] Specifically, the jacket 20 is arranged on the outer periphery of the middle and lower part of the vacuum buffer tank 13; the heat medium inlet 17 and the heat medium outlet 18 keep the vacuum jacket pipeline 12 at a high temperature, preventing the sublimated substances from staying in the vacuum jacket pipeline 12 and blocking the vacuum jacket pipeline 12; the cooling coil 19 is distributed in a plurality of Z - shapes. One end of the cooling coil 19 is provided with a cold medium inlet 191, and the other end is provided with a cold medium outlet 192. The cold medium inlet 191 and the cold medium outlet 192 respectively extend outside the vacuum buffer tank 13 for circulating the cold medium. The cooling coil 19 reduces the internal temperature of the vacuum buffer tank 13, causing the sublimated material to sublime. The jacket 20 is provided with a jacket heat medium inlet 201 and a jacket heat medium outlet 202 for circulating the heat medium. The heat medium dissolves and discharges the solid material, ensuring the vacuum degree during the drying process of the dryer.

[0043] The present application provides a vacuum pipeline system for a double - cone vacuum dryer, including a vacuum tank body. One side of the vacuum tank body is connected to a vacuum pipeline. A heat - tracing pipeline is arranged inside the vacuum pipeline. A rotating mechanism is arranged on the vacuum pipeline. One side of the vacuum pipeline is connected to a buffer mechanism. By setting an internal heat - tracing pipe in the vacuum pipeline of the dryer, the temperature inside the vacuum pipeline of the dryer is increased, preventing the sublimable material from subliming in the vacuum pipeline of the dryer and blocking the vacuum pipeline of the dryer. And in the vacuum buffer tank, the sublimated material is sublimed by cooling, and then a heat medium is introduced to dissolve and discharge the solid material, ensuring the vacuum degree during the drying process of the dryer, and greatly improving the drying effect of the dryer.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0045] The above - mentioned are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double cone vacuum drying machine vacuum pipeline system, characterized in that: It comprises a vacuum tank body, one side of the vacuum tank body is connected with a vacuum pipeline, a heating pipeline is arranged in the vacuum pipeline, a rotating mechanism is arranged on the vacuum pipeline, and one side of the vacuum pipeline is connected with a buffer mechanism; The vacuum pipeline comprises a vacuum filter head arranged in the vacuum tank body, one end of the vacuum filter head is connected to a dryer vacuum pipeline, and the dryer vacuum pipeline extends to the outside of the vacuum tank body and is connected to a vacuum jacket pipeline through a rotary joint; The buffer mechanism comprises a vacuum buffer tank, one side of the upper part of the vacuum buffer tank is connected to the vacuum jacket pipeline, and the other side of the upper part of the vacuum buffer tank is connected to a vacuum access pipeline; an inner extension pipe is provided at the connection point between the vacuum buffer tank and the vacuum jacket pipeline, and a support frame is provided at the bottom of the vacuum buffer tank; The vacuum jacket pipeline is provided with a heat medium inlet at one end close to the vacuum buffer tank, and a heat medium outlet at the other end. A cooling coil is provided inside the vacuum buffer tank, and a jacket is provided outside the vacuum buffer tank.

2. A double cone vacuum drying machine vacuum pipeline system according to claim 1, characterized in that: The number of the vacuum filter heads is 3, and the 3 vacuum filter heads are radially arranged and are all connected to the vacuum pipeline of the dryer.

3. A double cone vacuum drying machine vacuum pipeline system according to claim 1, characterized in that: The rotating mechanism includes a rotating shaft, which is arranged on the outer periphery of the dryer vacuum pipeline and fixedly connected to the vacuum tank body. A fixed bracket is rotatably connected to the rotating shaft. A transmission belt is provided on one end of the rotating shaft close to the rotary joint, and a driving motor is provided on the transmission belt.

4. A double cone vacuum drying machine vacuum pipeline system according to claim 1, characterized in that: The rotary joint is provided with a sealing ring, and the number of the sealing rings is 2, which are respectively arranged on both sides of the rotary joint.

5. A double cone vacuum drying machine vacuum pipeline system according to claim 1, characterized in that: The heating pipeline comprises a built-in heating pipe arranged inside the vacuum pipe of the dryer, the built-in heating pipe is U-shaped, and built-in heating pipe joints are respectively provided at both ends of the U-shape of the built-in heating pipe.

6. A double cone vacuum drying machine vacuum pipeline system according to claim 5, characterized in that: The two ends of the vacuum jacket pipe are respectively provided with a first flange and a second flange, and the end of the vacuum access pipe connected with the vacuum buffer tank is provided with a third flange.

7. A double cone vacuum drying machine vacuum pipeline system according to claim 6, characterized in that: The built-in heating pipe joint extends from between the rotary joint and the first flange.

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