A double-cone vacuum dryer sealing mechanism

Abstract

The application relates to the technical field of vacuum drying devices, in particular to a sealing mechanism of a double-cone vacuum drying machine, which comprises a cylinder, a vacuum pipe, a vacuum device arranged in the cylinder and a sealing assembly. The vacuum pipe penetrates through the cylinder and abuts against the cylinder, and the vacuum pipe is communicated with the inside of the cylinder. The sealing assembly is fixed to the inner wall of the cylinder, covers the connection between the vacuum pipe and the cylinder, and is fixedly connected and communicated with the vacuum device at the end far from the vacuum pipe. When the cylinder rotates, the two vacuum pipes are static. The connection between the cylinder and the vacuum pipe is prone to wear and tear to form a gap due to long-term relative movement. The sealing assembly can cover the gap by covering the connection between the vacuum pipe and the cylinder, which can isolate the dry tailings and residues in the cylinder from overflowing to protect the production environment, block the infiltration of external air and dirt to protect the materials, and ensure the airtightness of the cylinder, so that the vacuum device can stably maintain the vacuum degree, the drying cycle is prolonged due to unstable vacuum and material pollution is reduced, and the drying efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of vacuum drying equipment technology, and in particular to a sealing mechanism for a double-cone vacuum dryer. Background Technology

[0002] In the material processing of chemical, pharmaceutical, and food industries, material drying is a core production step to ensure product purity, activity, and compliance. Especially for high-purity, heat-sensitive materials such as pharmaceutical intermediates, active pharmaceutical ingredients, biological products, and food additives, the drying process must strictly avoid the risks of high-temperature denaturation, oxidative degradation, and external contamination. Vacuum drying technology can effectively solve the drying pain points of the above-mentioned materials because it can create a low-temperature, low-oxygen drying environment. It has become the mainstream technology for drying such materials. The stainless steel double cone vacuum dryer, with its advantage of uniform material mixing caused by the rotation of the cylinder, has become one of the core equipment for realizing this technology.

[0003] In related technologies, the equipment mainly consists of a rotatable cylinder, a vacuum pumping device, and a vacuum tube. The vacuum pumping device is located inside the cylinder and is connected to the vacuum tube. During operation, the vacuum pumping device continuously discharges the air inside the cylinder through the vacuum tube to create the required vacuum conditions inside the cylinder. At the same time, the cylinder rotates around the axis of the vacuum tube, using the rotational motion to agitate and mix the material inside the cylinder, accelerating the vaporization and discharge of moisture inside the material, and ultimately achieving the goal of efficient drying of the material.

[0004] However, since the cylinder is constantly rotating while the vacuum tube remains stationary, the contact points between the cylinder and the vacuum tube will wear down due to continuous friction during long-term operation. As the usage time increases, the wear will continuously widen the gap between the contact points. The tail material, residue, and other dirt generated during the drying process inside the cylinder will splash out of the equipment through the widened gap, further polluting the production environment. At the same time, the widened gap will destroy the sealed environment inside the cylinder, allowing external air and dirt to easily seep in, making it difficult for the equipment to maintain a stable vacuum level and contaminating the material, thereby prolonging the material drying cycle and reducing drying efficiency. Utility Model Content

[0005] To address the aforementioned problems, this application provides a sealing mechanism for a double-cone vacuum dryer.

[0006] The sealing mechanism for a double-cone vacuum dryer provided in this application adopts the following technical solution: A sealing mechanism for a double-cone vacuum dryer includes a cylinder, a vacuum tube, and a vacuum device. The vacuum device is disposed inside the cylinder. The vacuum tube extends through the cylinder and into its interior. The vacuum tube is fixedly connected to the cylinder and communicates with the interior of the cylinder. The system also includes a sealing assembly, which is fixedly connected to the inner wall of the cylinder and covers the connection between the vacuum tube and the cylinder. The vacuum device is fixedly connected to and communicates with the end of the sealing assembly away from the vacuum tube.

[0007] By adopting the above technical solution, the vacuum tube and the cylinder are fixedly connected. When the cylinder rotates, the vacuum tube can rotate synchronously with the cylinder, reducing the problem of long-term wear and the formation of gaps. Even after long-term operation, if small gaps occasionally appear at the connection between the vacuum tube and the cylinder, the sealing component can tightly cover the connection between the vacuum tube and the cylinder, effectively covering any possible gaps. The sealing component can isolate the tail material, residue, and other dirt generated during the drying process inside the cylinder, reducing the risk of dirt splashing to the outside through gaps and lowering the risk of pollution to the production environment. At the same time, the sealing component can block the path of external air and dirt to seep into the cylinder through gaps, reducing the possibility of material contamination. In addition, this design can ensure that the inside of the cylinder always maintains a sealed vacuum environment, ensuring that the vacuum device can stably maintain the vacuum level inside the cylinder, thereby reducing the problem of prolonged drying cycle caused by vacuum fluctuations or material contamination, and effectively improving the overall drying efficiency.

[0008] Preferably, the sealing assembly includes a housing, which is fixedly connected to the inner wall of the cylinder, and the housing covers the connection between the vacuum tube and the cylinder. The vacuum tube communicates with the interior of the housing, and the vacuum device is fixedly connected to and communicates with the end of the housing away from the vacuum tube.

[0009] By adopting the above technical solution, the shell can cover the gap formed by wear at the connection between the vacuum tube and the cylinder, thus confining the waste material, residue, and other contaminants generated during drying inside the cylinder within the shell. This reduces the likelihood of splashing to the outside of the equipment through the gap, thereby reducing pollution of the production environment. At the same time, the shell can reduce the path of external air and contaminants to seep into the cylinder through the gap, reducing the occurrence of material contamination. It can also maintain a vacuum-sealed environment inside the cylinder. In conjunction with the vacuum device connected to the shell, it can stably maintain the vacuum level inside the cylinder, thereby reducing the extension of the drying cycle caused by unstable vacuum and material contamination, and effectively improving drying efficiency.

[0010] Preferably, the housing includes a first housing and a second housing, the first housing is fixed to the inner wall of the cylinder, the second housing is fixedly connected to the first housing, and the vacuum device is fixedly connected to and communicates with the second housing.

[0011] By adopting the above technical solution, the first shell can fit snugly against the inner wall of the cylinder and be fixedly connected to the inner wall of the cylinder to ensure stable installation. The second shell can adapt to the connection requirements of the vacuum device. The two work together to form a complete closed space, which effectively reduces the leakage of dirt from the cylinder through the gap formed by the wear between the vacuum tube and the cylinder, and also reduces the infiltration of external air and dirt, ensuring that the vacuum device can stably maintain the vacuum level inside the cylinder and reduce the contamination of materials. At the same time, the split design facilitates production assembly and later maintenance, and improves the practicality and durability of the overall structure.

[0012] Preferably, the sealing assembly further includes a connecting pipe disposed between the vacuum device and the second housing, wherein the vacuum device is fixedly connected to and communicates with the connecting pipe.

[0013] By adopting the above technical solution, the connecting pipe can flexibly adapt to the connection size and angle differences between the vacuum device and the second shell, reduce the assembly errors that may be caused by direct connection, which may lead to poor sealing, ensure smooth connection of the vacuum passage, further enhance the airtightness of the overall sealing system, reduce the risk of gas leakage or dirt penetration, and enable the vacuum device to maintain the vacuum environment inside the cylinder more stably.

[0014] Preferably, the sealing assembly further includes a fixing unit for fixing the first housing and the second housing together, and fixing the connecting pipe and the vacuum device together.

[0015] By adopting the above technical solution, it is possible to ensure that the first shell and the second shell fit tightly together, reducing the loosening of the first shell and the second shell due to the rotation and vibration of the cylinder, thereby maintaining the sealed protection of the connection between the vacuum tube and the cylinder, effectively reducing the overflow of dirt such as dried tail material and residue inside the cylinder, while blocking the infiltration of external air and dirt. On the other hand, by stabilizing the connecting pipe and the vacuum device, leakage of the vacuum passage due to vibration or assembly gaps can be reduced, ensuring that the vacuum device can continuously and stably extract gas from the shell and cylinder, ensuring a constant vacuum level inside the cylinder.

[0016] Preferably, it further includes a transmission assembly, which includes a transmission unit sleeved on the vacuum tube. The vacuum tube is fixedly connected to the transmission unit, one end of the transmission unit is fixedly connected to the cylinder, and the transmission unit is externally connected to a driving device that drives the transmission unit to rotate.

[0017] By adopting the above technical solution, the transmission unit is sleeved on the vacuum tube and fixedly connected to the vacuum tube. One end of the transmission unit is fixedly connected to the outer wall of the cylinder. Through the fixed connection between the vacuum tube and the transmission unit, the transmission unit can directly transmit the driving force to the vacuum tube. When the external drive device drives the transmission unit to rotate, the transmission unit can drive the cylinder to rotate synchronously by means of its fixed connection with the outer wall of the cylinder. On the other hand, it can drive the vacuum tube to rotate synchronously by means of its fixed connection with the vacuum tube, thereby driving the vacuum device and sealing components inside the cylinder to rotate together. This ultimately achieves complete synchronous movement between the vacuum device, sealing components, vacuum tube and cylinder, reducing the gaps caused by friction and wear that may occur between the vacuum tube and the transmission unit. At the same time, the sealing components rotate synchronously with the cylinder and the vacuum tube, ensuring that the connection between the vacuum tube and the cylinder is always tightly covered, ensuring a stable and reliable isolation effect against dirt, and further enhancing the stability and sealing of the equipment operation.

[0018] Preferably, the transmission assembly further includes a transmission component, which is coaxially fixed with the transmission unit, and the driving device is rotatably connected to the transmission component.

[0019] By adopting the above technical solution, the transmission component serves as the power transmission medium between the drive device and the transmission unit. The rotation of the drive device further drives the transmission component to rotate. Since the transmission component and the transmission unit are coaxially fixed, the rotation of the transmission component further acts on the transmission unit to drive the transmission unit to rotate.

[0020] Preferably, a gasket is provided between the transmission unit and the outer wall of the cylinder.

[0021] By adopting the above technical solution, the gasket can fill the tiny gaps that may exist when the transmission unit is connected to the outer wall of the cylinder, forming an effective sealing barrier. On the one hand, it can isolate the tail material, residue and other dirt generated during drying inside the cylinder, reducing the possibility of dirt splashing to the outside through the enlarged gap, thus reducing pollution to the production environment. On the other hand, it can block the path of external air and dirt to seep into the cylinder through the gap, reducing the occurrence of material contamination. At the same time, it can ensure a sealed vacuum environment inside the cylinder, enabling the vacuum device to stably maintain the vacuum level inside the cylinder, thereby reducing the extension of the drying cycle caused by unstable vacuum level and material contamination, and effectively improving drying efficiency.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The vacuum tube is fixedly connected to the cylinder and can rotate synchronously with the cylinder, reducing wear and gap problems at the connection point caused by long-term relative motion. The sealing component is fixed to the inner wall of the cylinder and covers the connection between the vacuum tube and the cylinder. Even if a small gap occasionally appears after long-term operation, it can be effectively covered, which not only isolates the drying tail material and residue inside the cylinder to prevent splashing and contamination of the production environment, but also blocks the infiltration of external air and dirt to reduce material contamination. At the same time, the vacuum device and the sealing component are fixedly connected at the end away from the vacuum tube, which can ensure that the inside of the cylinder always maintains a sealed vacuum environment and ensures that the vacuum device stably maintains the vacuum degree inside the cylinder, thereby reducing the extension of the drying cycle caused by vacuum degree fluctuations or material contamination, and effectively improving the overall drying efficiency. 2. The shell can precisely cover the gap formed by wear between the vacuum tube and the cylinder due to long-term relative rotation. On the one hand, it confines the tail material, residue and other dirt generated during drying inside the cylinder to the shell, reducing the possibility of dirt splashing to the outside of the equipment through the gap and reducing pollution to the production environment. On the other hand, it can block the path of external air and dirt to seep into the cylinder through the gap, reducing the risk of material contamination. At the same time, it effectively maintains the vacuum sealing environment inside the cylinder. With the vacuum device connected to the shell, it ensures that the vacuum degree inside the cylinder can be maintained stably, thereby reducing the extension of the drying cycle caused by unstable vacuum degree and material contamination, and ultimately effectively improving the material drying efficiency. 3. The first housing can be firmly fixed to the inner wall of the cylinder, providing a reliable installation base for the overall sealed space. The second housing, through its fixed connection with the first housing, can not only work together with the first housing to form a complete closed space, but also adapt to the connection requirements of the vacuum device, ensuring stable communication between the vacuum device and the housing. This can effectively reduce the leakage of dirt from the cylinder through the gaps formed by the wear between the vacuum tube and the cylinder, while also reducing the infiltration of external air and dirt into the cylinder, thereby ensuring that the vacuum device stably maintains the vacuum level inside the cylinder and reducing the risk of material contamination. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural diagram of an embodiment of this application.

[0024] Figure 2 It is a structural diagram of the vacuum tube, vacuum device, sealing components, and transmission components.

[0025] Figure 3 It is a structural diagram of the vacuum tube, vacuum device, sealing components, and transmission components.

[0026] Figure 4 This is a cross-sectional structural diagram of an embodiment of this application.

[0027] Figure 5 This is a structural schematic diagram of an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Cylinder; 2. Vacuum tube; 3. Vacuum device; 41. Shell; 411. First shell; 412. Second shell; 42. Connecting pipe; 43. Fixing unit; 431. Flange; 432. Bolt; 433. Nut; 51. Transmission component; 52. Transmission unit; 521. Transmission sleeve; 522. Fixing base; 5221. Connecting part; 6. Gasket. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a sealing mechanism for a double-cone vacuum dryer. (Refer to...) Figure 1 A sealing mechanism for a double-cone vacuum dryer includes a cylinder 1, a vacuum tube 2, a vacuum device 3, a transmission assembly, and a sealing assembly. The sealing assembly is fixedly connected to the inner wall of the cylinder 1, the vacuum tube 2 is fixedly connected to and communicates with the cylinder 1, the sealing assembly covers the connection between the vacuum tube 2 and the cylinder 1, the vacuum device 3 is fixedly connected to and communicates with the end of the sealing assembly away from the vacuum tube 2, and the transmission assembly is fixedly connected to the cylinder 1, driving the cylinder 1 to rotate.

[0031] Furthermore, after the material to be dried is loaded into the cylinder 1, the vacuum device 3 is activated first. The vacuum device 3 discharges the air inside the cylinder 1 to the outside through the vacuum tube 2, thereby creating the vacuum environment required for material drying. After the vacuuming operation is completed and the vacuum level inside the cylinder is maintained at a stable level, the cylinder 1 begins to rotate according to the process requirements. The rotation ensures that the material inside is heated evenly and improves the drying efficiency. During this process, since the vacuum tube 2 and the cylinder 1 are fixedly connected, the vacuum tube 2 can rotate synchronously with the cylinder 1 when the cylinder 1 rotates, reducing the problem of long-term wear and the formation of gaps.

[0032] Furthermore, even after long-term operation, minor gaps may occasionally appear at the connection between the vacuum tube 2 and the cylinder 1. The sealing assembly can cover these gaps caused by wear between the vacuum tube 2 and the cylinder 1. On the one hand, this isolates the waste material, residue, and other contaminants generated during drying inside the cylinder 1, reducing the possibility of contaminants splashing to the outside through the enlarged gaps and thus minimizing pollution to the production environment. On the other hand, it blocks the path for external air and contaminants to seep into the cylinder 1 through the gaps, reducing the possibility of material contamination. At the same time, it ensures a sealed vacuum environment inside the cylinder 1, allowing the vacuum device 3 to stably maintain the vacuum level inside the cylinder 1. This reduces the extension of the drying cycle caused by unstable vacuum levels and material contamination, effectively improving drying efficiency. Reference Figure 2 and Figure 3Specifically, the sealing assembly includes a housing 41, which includes a first housing 411 and a second housing 412. The first housing 411 is fixedly connected to the inner wall of the cylinder 1. In this embodiment, the first housing 411 is connected to the cylinder 1 by welding. The first housing 411 is annular and surrounds the connection between the vacuum tube 2 and the cylinder 1. The second housing 412 is hemispherical and its edge contour matches the edge contour of the first housing 411. The second housing 412 is fixedly connected to the first housing 411.

[0033] Furthermore, the sealing assembly also includes a fixing unit 43, which includes two flanges 431, bolts 432, and nuts 433. The first housing 411 and the second housing 412 are respectively fixed to the two flanges 431, the two flanges 431 are brought together, and the two flanges 431 are connected by the threaded engagement of the bolts 432 and nuts 433, thereby further fixing the first housing 411 and the second housing 412 together.

[0034] This demonstrates that the rigid connection of flange 431, combined with the threaded locking of bolts 432 and nuts 433, provides a high-strength, vibration-resistant, and stable connection between the first housing 411 and the second housing 412. This effectively resists the impact force generated when the cylinder 1 rotates, reduces the occurrence of loosening at the connection between the first housing 411 and the second housing 412, enhances the sealing performance at the connection between the first housing 411 and the second housing 412, reduces the overflow of dirt inside the cylinder 1 or the infiltration of external air and impurities, and further ensures the airtightness of the enclosed space.

[0035] Meanwhile, the detachable structure of bolts 432 and nuts 433 makes it easy to disassemble and assemble the first housing 411 and the second housing 412, which facilitates the replacement or cleaning of components during later maintenance. This not only ensures the long-term stable isolation effect of the sealing components, but also improves the convenience of equipment operation and maintenance, ultimately helping to maintain a stable vacuum environment and drying efficiency inside the cylinder 1.

[0036] Furthermore, the vacuum device 3 is fixedly connected to and communicates with the second housing 412. Specifically, in this embodiment, the vacuum device 3 is configured as a three-bladed vacuum device, which includes three vacuum units. Each vacuum unit is fixedly connected to and communicates with the second housing 412. The sealing assembly also includes connecting pipes 42. There are three connecting pipes 42. Each connecting pipe 42 is disposed between the vacuum unit and the second housing 412. One end of the connecting pipe 42 is fixedly connected to and communicates with the second housing 412, and the connecting pipe 42 and the second housing 412 are fixedly connected by welding. The other end of the connecting pipe 42 is fixedly connected to and communicates with the vacuum unit. The connection between the vacuum unit and the connecting pipe 42 is also fixedly connected by a fixing element.

[0037] Furthermore, the vacuum unit and the connecting pipe 42 are respectively fixed to the two flanges 431, the two flanges 431 are brought together, and the two flanges 431 and the flange gasket are fixedly connected by the threaded engagement of the bolts 432 and the nuts 433, and the vacuum unit and the connecting pipe 42 are further fixedly connected.

[0038] This demonstrates that the rigid connection of flange 431 and the threaded locking effect of bolts 432 and nuts 433 provide a high-strength, vibration-resistant, and stable connection between the vacuum unit and the connecting pipe 42, reducing loosening at the connection, enhancing the sealing performance of the connection, reducing gas leakage in the vacuum environment, and ensuring that the vacuum unit can efficiently extract gas from the cylinder 1 to maintain a stable vacuum.

[0039] Reference Figure 4 and Figure 5 Furthermore, the transmission assembly includes a transmission component 51 and a transmission unit 52. The transmission unit 52 includes a transmission sleeve 521 and a fixed seat 522. The transmission sleeve 521 and the fixed seat 522 are fixedly connected. The vacuum tube 2 passes through the transmission sleeve 521 and the fixed seat 522 in sequence. The transmission sleeve 521 and the fixed seat 522 are sleeved on the outside of the vacuum tube 2. One end of the fixed seat 522 is provided with a connecting part 5221. The connecting part 5221 passes through the cylinder 1 and is fixedly connected to the cylinder 1. One end of the vacuum tube 2 is fixedly connected to the connecting part 5221. The transmission component 51 is fixedly disposed on the outer surface of the transmission sleeve 521. The transmission component 51 and the transmission sleeve 521 are coaxially fixed. At the same time, the transmission component 51 is externally connected to a driving device. The driving device is rotatably connected to the transmission component 51. The driving device drives the active component to rotate, and further drives the transmission sleeve 521 to rotate. One end of the fixed seat 522 abuts against the outer wall of the cylinder 1 through a gasket 6, and the other end is fixedly connected to the transmission sleeve 521.

[0040] This explains that the drive device first drives the external transmission component 51 to rotate. Since the transmission component 51 is coaxially fixed with the transmission sleeve 521, the power is transmitted to the transmission sleeve 521. Since the transmission sleeve 521 is fixedly connected to the fixed seat 522, the transmission sleeve 521 further drives the fixed seat 522 to rotate synchronously. The fixed seat 522 passes through the cylinder 1 through the connecting part 5221 and is fixed to the cylinder 1. At the same time, the vacuum tube 2 is fixed to the connecting part 5221. Finally, the cylinder 1 and the vacuum tube 2 rotate synchronously with the transmission sleeve 521 and the fixed seat 522, which reduces the friction and wear caused by the difference in rotation speed between the cylinder 1, the vacuum tube 2 and the transmission unit 52.

[0041] Meanwhile, one end of the fixed seat 522 abuts against the outer wall of the cylinder 1 through the gasket 6. The gasket 6 can enhance the sealing of the connection between the fixed seat 522 and the cylinder 1, effectively reducing the infiltration of external dirt or leakage of internal tail material. The gasket 6 can also buffer the contact pressure between the fixed seat 522 and the outer wall of the cylinder 1 during rotation, reducing the wear of both by hard friction. In addition, the vacuum tube 2 passes through and is fixed to the transmission sleeve 521 and the fixed seat 522 in sequence. This not only ensures the coaxiality of the vacuum tube 2 and the transmission unit 52, reducing the problem of the vacuum tube 2 shifting during rotation and affecting the vacuum environment, but also provides stable support for the vacuum tube 2. This further ensures the normal operation of the vacuum device 3 inside the cylinder 1 and provides comprehensive protection for the high efficiency and cleanliness of the drying process.

[0042] The implementation principle of a sealing mechanism for a double-cone vacuum dryer according to an embodiment of this application is as follows: After the material to be dried is loaded into the cylinder 1, the vacuum device 3 is started first. The vacuum device 3 discharges the air in the cylinder 1 to the outside through the vacuum tube 2, thereby creating the vacuum environment required for material drying. After the vacuuming operation is completed and the cylinder maintains a stable vacuum level, the cylinder 1 begins to rotate according to the process requirements.

[0043] The drive unit first starts and outputs power, which directly acts on the transmission component 51 connected to it, causing the transmission component 51 to start rotating. Since the transmission component 51 and the transmission sleeve 521 are coaxially fixed, the rotation of the transmission component 51 will synchronously drive the transmission sleeve 521 to rotate together, realizing the smooth transmission of power from the transmission component 51 to the transmission sleeve 521. After the transmission sleeve 521 rotates, it is further transmitted to the fixed seat 522 which is fixedly connected to the transmission sleeve 521. The rotation of the transmission sleeve 521 will directly drive the fixed seat 522 to rotate synchronously.

[0044] The fixed base 522 is not an independent component. The connecting part 5221 of the fixed base 522 passes through the cylinder 1 and extends into the inside of the cylinder 1, forming a firm fixation with the inner wall of the cylinder 1. The vacuum tube 2 is fixedly connected to the connecting part 5221. Therefore, the rotation of the fixed base 522 will drive the cylinder 1 and the vacuum tube 2 to rotate synchronously as a whole. As the cylinder 1 rotates, the vacuum tube 2 can rotate synchronously with the cylinder 1, reducing the problem of long-term wear and the formation of gaps. The sealing component, which is fixedly connected to the inner wall of the cylinder 1, will also rotate. At the same time, since the vacuum device 3 and the sealing component are fixed and connected, the rotation of the sealing component will further drive the vacuum device 3 to rotate synchronously, ultimately realizing the complete power transmission and component linkage from the drive device to the vacuum device 3.

[0045] During this process, the sealing assembly, which is fixedly connected to the inner wall of the cylinder 1, rotates synchronously with the cylinder 1. The sealing assembly always covers the connection between the vacuum tube 2 and the cylinder 1. The sealing assembly is assembled from the first housing 411 and the second housing 412 via a fixing unit 43. Simultaneously, the vacuum device 3, which is fixedly connected to the sealing assembly, also rotates synchronously with the sealing assembly, ensuring the consistency of movement between the entire internal assembly and the cylinder 1. It is worth noting that even if a gap remains after long-term relative rotation between the vacuum tube 2 and the cylinder 1, the sealing assembly, through the coordinated enclosure of the first housing 411 and the second housing 412, effectively seals and protects this gap, forming a complete enclosed space. This confines the waste material, residue, and other contaminants generated during drying within the cylinder 1 to the inside of the sealing assembly.

[0046] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing mechanism for a double-cone vacuum dryer, comprising a cylinder (1), a vacuum tube (2), and a vacuum device (3), wherein the vacuum device (3) is disposed inside the cylinder (1), the vacuum tube (2) extends through the cylinder (1) into the interior of the cylinder (1), the vacuum tube (2) is fixedly connected to the cylinder (1), and the vacuum tube (2) communicates with the interior of the cylinder (1), characterized in that, It also includes a sealing assembly, which is fixedly connected to the inner wall of the cylinder (1), and the sealing assembly covers the connection between the vacuum tube (2) and the cylinder (1). The vacuum device (3) is fixedly connected to and communicates with the end of the sealing assembly away from the vacuum tube (2).

2. The sealing mechanism for a double-cone vacuum dryer according to claim 1, characterized in that, The sealing assembly includes a housing (41) which is fixedly connected to the inner wall of the cylinder (1). The housing (41) covers the connection between the vacuum tube (2) and the cylinder (1). The vacuum tube (2) is connected to the interior of the housing (41). The vacuum device (3) is fixedly connected to and communicates with the end of the housing (41) away from the vacuum tube (2).

3. The sealing mechanism for a double-cone vacuum dryer according to claim 2, characterized in that, The housing (41) includes a first housing (411) and a second housing (412). The first housing (411) is fixed to the inner wall of the cylinder (1), and the second housing (412) is fixedly connected to the first housing (411). The vacuum device (3) is fixedly connected to and communicates with the second housing (412).

4. The sealing mechanism for a double-cone vacuum dryer according to claim 3, characterized in that, The sealing assembly also includes a connecting pipe (42), which is disposed between the vacuum device (3) and the second housing (412). The vacuum device (3) is fixedly connected to and communicates with the connecting pipe (42).

5. The sealing mechanism for a double-cone vacuum dryer according to claim 4, characterized in that, The sealing assembly further includes a fixing unit (43) for fixing the first housing (411) and the second housing (412) together, and fixing the connecting pipe (42) and the vacuum device (3) together.

6. The sealing mechanism for a double-cone vacuum dryer according to claim 1, characterized in that, It also includes a transmission assembly, which includes a transmission unit (52), which is sleeved on the vacuum tube (2). The vacuum tube (2) is fixedly connected to the transmission unit (52), and one end of the transmission unit (52) is fixedly connected to the cylinder (1). The transmission unit (52) is externally connected to a driving device, which drives the transmission unit (52) to rotate.

7. The sealing mechanism for a double-cone vacuum dryer according to claim 6, characterized in that, The transmission assembly further includes a transmission component (51), which is coaxially fixed with the transmission unit (52), and the driving device is rotatably connected to the transmission component (51).

8. A sealing mechanism for a double-cone vacuum dryer according to claim 6, characterized in that, A gasket (6) is provided between the transmission unit (52) and the outer wall of the cylinder (1).

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