Vacuum paddle dryer for tar residue treatment and treatment process thereof

Abstract

This application relates to the field of vacuum paddle dryer technology and discloses a vacuum paddle dryer for treating tar residue and its processing technology. The dryer includes a shell, a feed inlet on one side of the top of the shell, a main shaft rotatably mounted on the inner side of the shell, and a feed pipe fixedly connected to one side of the bottom of the shell. Liquid is filled into the feed pipe through a conduit. This invention uses industrial circulating water to separate the shell cavity and the placement cavity, thus maintaining a sealed state during the drying process of tar residue containing harmful gases. When the material is fed, an adjusting mechanism drives a rotating plate to open the feed channel between the baffle plate and the shell. After ensuring sufficient drying time, the material falls into the water for cooling, thus preventing the high-temperature material from directly contacting the air and generating harmful gases and dust, polluting the working environment. Simultaneously, the cooling process improves material processing efficiency and drying quality.

Description

Technical Field

[0001] This application relates to the field of vacuum paddle dryer technology, and in particular to a vacuum paddle dryer for treating tar residue and its processing technology. Background Technology

[0002] A vacuum paddle dryer is a drying device that uses conductive heating to dry batches of materials under vacuum. It is commonly used for drying small quantities of heat-sensitive materials such as slurries, pastes, and powders. Existing vacuum paddle dryers mainly consist of a horizontal shell with a heating jacket, one or two hollow paddle shafts installed inside the cylinder, a drive unit, and a vacuum system. The hollow paddle shafts are densely covered with hollow blades. Heat transfer medium such as heat transfer oil or steam is introduced into the shaft via a rotary joint, flows through the interior of the paddles and into the jacket, and conducts heat to the material through the metal walls.

[0003] During operation, the tar residue is fed into the shell through the feed port via a screw conveyor. After a vacuum is drawn inside the shell, the twin shafts are driven to rotate in opposite directions, which in turn drives the paddles to continuously stir and turn the material, and to convey it axially. The water vapor or solvent vapor generated by the material after heating is extracted from the cylinder by the vacuum system. After drying is completed, gas is introduced through the ventilation pipe to restore the pressure inside the shell to normal. The valve at the discharge port is then opened, and the material is discharged through the discharge port, completing the drying process of the tar residue.

[0004] However, in the operation of existing vacuum paddle dryers, the dried material is usually discharged directly at a high temperature. When it comes into contact with the atmosphere at the discharge port, a large amount of dust is easily generated, which deteriorates the working environment and causes material loss. At the same time, for materials containing polluting volatiles such as tar residue, harmful fumes are easily generated during the material discharge process, which affects the health of operators and causes environmental pollution. Furthermore, the hot material after drying often needs to be treated with a separate cooling device, which increases the complexity of the system and energy consumption. Summary of the Invention

[0005] This application proposes a vacuum paddle dryer and its processing technology for treating tar residue. It has the advantages of ensuring the sealing performance of the drying system while avoiding the generation of smoke and dust when the material is discharged. It solves the problem that traditional vacuum paddle dryers are prone to generating harmful smoke when discharging materials containing pollutants and have high requirements for the airtight performance of the discharge valve.

[0006] To achieve the above objectives, this application adopts the following technical solution: a vacuum paddle dryer for treating tar residue and its processing technology, comprising a shell, an inlet on one side of the top of the shell, a main shaft rotatably mounted on the inner side of the shell, a feed pipe fixedly connected to one side of the bottom of the shell, liquid being filled in the feed pipe through a pipe, the liquid separating the shell from the cavity on the side of the feed pipe away from the shell, a baffle plate fixedly mounted on the side of the shell near the feed pipe, a drive shaft mounted on one side of the baffle plate, a rotating plate mounted on one side of the drive shaft for cooperating with the baffle plate to block materials, and an adjustment mechanism mounted inside the shell;

[0007] The drive shaft is used to drive the rotating plate to rotate, and the adjustment mechanism is used to drive the rotating plate to rotate around the axis of the drive shaft, adjust the distance between the bottom of the rotating plate and the inner wall of the feed tube, and switch the opening state of the channel between the bottom of the baffle plate and the bottom of the inner wall of the housing.

[0008] Furthermore, a filter plate is fixedly installed on one side of the top of the feeding pipe, and a placement cavity is formed between the filter plate and the inner wall of the feeding pipe. A chain plate slag removal mechanism is installed at the bottom of the feeding pipe, and a closed discharge pipe with a valve is fixedly installed at the bottom of the placement cavity.

[0009] Furthermore, two connecting blocks are fixedly connected to one side of the drive shaft, the rotating plate is fixedly connected to the connecting blocks, the shape of the rotating plate is adapted to the cross-sectional shape of the corresponding position of the housing, and the baffle plate is rotatably sleeved with the main shaft.

[0010] Furthermore, the feeding pipe is generally V-shaped, and the adjustment mechanism includes a float and a transmission mechanism. Two guide plates are fixedly connected to the top of the feeding pipe, a transmission rod is fixedly connected to the top of the float, a transmission block is fixedly connected to the top of the transmission rod, and a connecting sleeve is fixedly connected to the side of the baffle plate near the bottom. The vertical movement of the transmission block can drive the transmission shaft to rotate through the transmission mechanism. When the float descends, it drives the rotating plate to rotate and move away from the baffle plate.

[0011] Furthermore, the transmission mechanism includes a connecting handle, which is rotatably connected to a connecting sleeve via a rotating shaft. A connecting rod is fixedly provided on one side of the connecting handle, and the connecting rod is slidably sleeved with the transmission block. Two transmission gears are rotatably provided on the inner side of the connecting sleeve.

[0012] Furthermore, both guide plates are slidably connected to the float, the two transmission gears mesh with each other, the transmission shaft is fixedly sleeved with the corresponding transmission gear, and the connecting handle is coaxially connected to the corresponding transmission gear.

[0013] Furthermore, the adjustment mechanism also includes a toggle lever, which is fixedly connected to the corresponding main shaft. A contact plate is fixedly connected to one side of the rotating plate. A spring seat is provided at the bottom of the float. A movable plate is movably provided at the top of the spring seat. A second spring is fixedly connected to the top of the spring seat. A telescopic mechanism is fixedly connected to one side of the top of the feed tube. The connecting handle is coaxially connected to the contact handle.

[0014] Furthermore, the spring seat is fixedly connected to the feed tube, the movable plate is movably engaged with the feed tube, one end of the second spring is fixedly connected to the movable plate, the telescopic mechanism includes a fixed cylinder, the fixed cylinder is fixedly connected to the feed tube, a movable rod is slidably sleeved on one side of the fixed cylinder, the movable rod is "T" shaped, a first spring is movably arranged inside the fixed cylinder, and one end of the first spring is fixedly connected to the movable rod.

[0015] Furthermore, the number of main shafts is set to two, and several stirring blades are fixedly arranged on the outer side of the main shafts.

[0016] A tar residue treatment process includes the following steps:

[0017] S1: Maintain normal pressure inside the placement chamber, purge inert gas into the shell and perform material loading operations;

[0018] S2: Adjust the vacuum level in the placement chamber and the shell to dry the material under negative pressure;

[0019] S3: Maintain negative pressure in the placement chamber and shell, adjust the mechanism, open the rotating plate, so that the material falls into the liquid in the feed pipe for cooling, and transport the material in the liquid to the placement chamber through the slag removal mechanism;

[0020] S4: Restore the air pressure in the placement chamber and shell to normal pressure, ready for the next round of material drying.

[0021] The beneficial effects of this invention are as follows:

[0022] This application provides a vacuum paddle dryer and its processing technology for treating tar residue. By filling the feed pipe with industrial circulating water to seal the cavity at the feed pipe, when materials containing harmful gases, such as tar residue, are being dried and fed, the materials fall into the water body for cooling. This avoids the high-temperature materials from directly contacting the air and generating harmful gases and dust, thus preventing pollution of the working environment in the processing workshop. At the same time, the material is cooled down, reducing subsequent material processing steps and improving the overall material processing efficiency.

[0023] In addition, the material can be dried in a vacuum environment. During feeding, the pressure difference between the placement chamber and the shell is adjusted to keep the water level in the feeding pipe within the rated range, thereby reducing the height of the float and driving the rotating plate to rotate through the transmission mechanism, opening the feeding channel between the baffle plate and the shell. By adjusting the order of restoring normal pressure in the placement chamber and the shell, the shell is pressurized first, and then the placement chamber is pressurized together to normal pressure, completing the switching of the rotating plate's open state, controlling the drying time of the material in the shell, and ensuring the quality of the material drying process. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of part of the structure of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the structure at the floating block of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the image;

[0029] Figure 5 This is a schematic diagram of the transmission mechanism of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B in the image.

[0031] In the diagram: 1. Shell; 2. Feed inlet; 3. Discharge pipe; 4. Transmission mechanism; 401. Connecting handle; 402. Connecting rod; 403. Transmission gear; 5. Slag removal mechanism; 6. Main shaft; 7. Float; 8. Telescopic mechanism; 801. Fixed cylinder; 802. Moving rod; 803. Spring No. 1; 9. Baffle plate; 10. Transmission shaft; 11. Rotating plate; 12. Transmission rod; 13. Transmission block; 14. Connecting block; 15. Connecting sleeve; 16. Spring seat; 17. Movable plate; 18. Spring No. 2; 19. Contact plate; 20. Actuating rod; 21. Contact handle; 22. Guide plate; 23. Placement cavity. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, as Figures 1-4 A vacuum paddle dryer for treating tar residue includes a housing 1, which is fixedly mounted on a frame. The housing 1 is a horizontal heating element with a heating jacket. A feed inlet 2 is provided on one side of the top of the housing 1 for connection to a screw conveyor. The housing 1 is connected to a vacuum assembly via a pipe to maintain a negative pressure environment inside the housing 1 during the heating and drying of the tar residue. The housing 1 is also connected to an inert gas assembly via a pipe to introduce inert gas into the housing 1 to increase the atmospheric pressure or slightly positive pressure environment. The inert gas is preferably nitrogen. A main shaft 6 is rotatably mounted on the inner side of the housing 1. The number of main shafts 6 is at least one, preferably two, to suit the treatment of high-viscosity tar residue. The two main shafts 6 are arranged in parallel.

[0034] The main shaft 6 is a hollow shaft. The hollow cavity of the main shaft 6 and the jacket of the housing 1 are both connected to the heat medium assembly for introducing heat medium to heat the tar residue. Several stirring blades are fixedly installed on the outside of the main shaft 6. The stirring blades can be hollow blades to cooperate with the heating of materials. The main shaft 6 is connected to the drive mechanism. The drive mechanism is used to drive the two main shafts 6 to rotate, thereby driving the stirring blades to stir and turn the material. A feed pipe 3 is fixedly connected to one side of the bottom of the housing 1. The feed pipe 3 and the feed inlet 2 are located on the two sides of the housing 1 respectively. The cavity of the feed pipe 3 is connected to the cavity of the housing 1. The feed pipe 3 is V-shaped. Liquid is pumped into the feed pipe 3 through a pipe. The liquid can be industrial circulating water. A filter plate is fixedly installed on one side of the top of the feed pipe 3. A placement cavity 23 is formed between the filter plate and the inner wall of the feed pipe 3. The water level in the feed pipe 3 is lower than the bottom of the placement cavity 23. The water in the feed pipe 3 can separate the cavity of the housing 1 and the placement cavity 23.

[0035] The placement chamber 23 is connected to the vacuum assembly via a pipe, and the discharge pipe 3 is sealed. The vacuum assembly can provide negative pressure to the cavity on one side outside the water body. The placement chamber 23 is fixedly equipped with a ventilation pipe at the top, which is equipped with a pressure regulating valve to introduce air to adjust the relative vacuum between the placement chamber 23 and the cavity of the shell 1 in conjunction with the vacuum assembly. The ventilation pipe can also be connected to an inert gas assembly. The bottom of the discharge pipe 3 is equipped with a slag removal mechanism 5, which can be set as a chain plate slag removal assembly, similar to a chain plate conveyor, to transport the tar residue submerged in the discharge pipe 3 to the placement chamber 23. The bottom of the placement chamber 23 is fixedly equipped with a closed discharge pipe through a valve. When the placement chamber 23 is under normal pressure, the valve is opened to pour out the tar residue in the placement chamber 23. A door panel is fixedly installed on one side of the placement chamber 23 in a detachable manner. The door panel can be opened as needed to maintain and clean the placement chamber.

[0036] A baffle plate 9 is fixedly installed inside the housing 1 on one side near the feed pipe 3, see reference. Figure 3 A drive shaft 10 is provided on one side of the baffle plate 9. The drive shaft 10 is rotatably connected to the housing 1. A connecting block 14 is fixedly connected to one side of the drive shaft 10. The number of connecting blocks 14 is set to two, and the two connecting blocks 14 are symmetrically arranged near the two ends of the shaft body of the drive shaft 10. A rotating plate 11 is provided on one side of the drive shaft 10 to cooperate with the baffle plate 9 to block the material. The rotating plate 11 is fixedly connected to the connecting block 14. The shape of the rotating plate 11 is adapted to the cross-sectional shape of the corresponding position of the housing 1. The bottom side of the rotating plate 11 is in contact with the inner wall of the feed pipe 3, and the side of the rotating plate 11 near the top is in contact with one end face of the baffle plate 9. At this time, the rotating plate 11 is located between the drive shaft 10 and the baffle plate 9. The baffle plate 9 is rotatably sleeved with the main shaft 6. An adjustment mechanism is provided inside the housing 1. The adjustment mechanism is used to drive the rotating plate 11 to rotate. The adjustment mechanism can be set as an electric push rod hinged to the housing 1. The output end of the electric push rod is hinged to the rotating plate 11.

[0037] During operation, nitrogen gas is introduced into the heated shell 1 and vacuum components are used to evacuate it, maintaining a slight positive pressure inside the shell 1. Nitrogen gas is then used to purge the gas inside the shell 1. Simultaneously, a screw conveyor introduces tar residue into the shell 1 through the feed inlet 2, using slightly positive pressure nitrogen gas for gas protection. After feeding is completed, the valve connecting the screw conveyor to the feed inlet 2 is closed, and the nitrogen supply is stopped. The vacuum components are used to evacuate the cavity of the shell 1 and the placement cavity 23. The main shaft 6 rotates and flips the tar residue located between the baffle plate 9, the rotating plate 11, and the inner wall of the shell 1 near the feed inlet 2. The tar residue is heated while maintaining a vacuum inside the shell 1, thus completing the drying process.

[0038] After the tar residue is dried, the adjusting mechanism drives the rotating plate 11 to rotate around its axis away from the baffle plate 9, opening the channel between the bottom of the baffle plate 9 and the shell 1. At this time, the main shaft 6 rotates, driving the stirring blades to rotate, thereby moving the material towards the baffle plate 9. The tar residue falls through the bottom of the baffle plate 9 into the cavity of the discharge pipe 3 and comes into contact with water, thereby cooling the tar residue and preventing it from directly contacting the air to generate smoke or dust and escaping, thus ensuring the cleanliness of the processing workshop. At the same time, the discharge pipe 3 is airtight through liquid, eliminating the need for additional airtight valves. This ensures the vacuum seal inside the shell 1 while preventing the airtight structure on the discharge pipe 3 from directly contacting the high-temperature tar residue, thus extending the service life of this part of the airtight structure.

[0039] Next, the slag removal mechanism 5 is activated. After being cooled by water, the high-temperature tar slag descends to the top of the slag removal mechanism 5 and is conveyed by the chain conveyor belt to the top of the discharge pipe 3, where it detaches from the slag removal mechanism 5. The tar slag is then transported into the placement chamber 23. The water carried out is filtered out through the filter plate, thus draining the slag in the placement chamber 23. After the slag has been drained, and with the shell 1 and the placement chamber 23 under normal pressure, the discharge pipe at the bottom is opened to discharge the tar slag that has undergone high-temperature drying, water immersion cooling, and draining. At this point, the slag is at a low temperature and has less adhesion compared to the high-temperature tar slag that has not been immersed in water. It is less likely to clog valves and other airtight structures, thus ensuring the stability of the airtight seal while completing the cooling operation of the tar slag, reducing subsequent tar slag processing steps, and improving the efficiency of tar slag processing.

[0040] Example 2, as Figures 1-6 Based on Embodiment 1, in this embodiment, unlike the electric push rod in Embodiment 1, the adjusting mechanism includes a float 7, see reference. Figure 4 Two guide plates 22 are fixedly connected to the top of the feed pipe 3. The two guide plates 22 are arranged on both sides of the float 7 and are slidably connected to the float 7, so that the float 7 can move vertically along the guide plates 22. A transmission rod 12 is fixedly connected to the top of the float 7 near the middle. A transmission block 13 is fixedly connected to the top of the transmission rod 12. A connecting sleeve 15 is fixedly connected to the side of the baffle plate 9 near the bottom. (See reference) Figure 6 One side of the connecting sleeve 15 is rotatably connected to the connecting handle 401 via a rotating shaft.

[0041] A connecting rod 402 is fixedly provided on one side of the connecting handle 401. The connecting rod 402 can be set as a rolling bearing, that is, the inner ring of the rolling bearing is fixedly connected to the connecting handle 401. The connecting rod 402 is slidably sleeved with the transmission block 13, so that the vertical lifting and lowering of the transmission block 13 can drive the connecting handle 401 to rotate. Two transmission gears 403 are rotatably provided on the inner side of the connecting sleeve 15. The transmission shaft 10 is fixedly sleeved with the corresponding transmission gear 403. The connecting handle 401 is coaxially connected to the corresponding transmission gear 403, that is, the rotation of the connecting handle 401 can drive the corresponding transmission gear 403 to rotate coaxially.

[0042] During the feeding process, the shell 1 and the placement cavity 23 are kept at normal pressure or slightly positive pressure. The buoyancy generated by the float 7 being immersed in the water causes the float 7 to move upward. At this time, the rotating plate 11 is kept in contact with the baffle plate 9 and the inner wall of the discharge pipe 3. When discharging, nitrogen is first introduced into the shell 1. While using nitrogen to purge, the air pressure in the shell 1 is made higher than the air pressure in the placement cavity 23 within the rated range, causing the water level in the discharge pipe 3 on the side close to the cavity of the shell 1 to drop. At this time, the float 7 descends under the action of gravity and drives the transmission rod 12 to move. The movement of the transmission rod 12 drives the transmission block 13 to move and descend.

[0043] The transmission block 13 drives the connecting rod 402 to rotate around the axis of the corresponding transmission gear 403 while descending, thereby driving the connecting handle 401 to rotate. The connecting handle 401 drives the transmission shaft 10 to rotate in the opposite direction through the two transmission gears 403, thereby driving the rotating plate 11 to rotate and open away from the baffle plate 9. After the material is discharged, the normal pressure state of the housing 1 cavity and the placement cavity 23 is restored. At this time, the float 7 rises and resets by buoyancy. Compared with the process of restoring normal pressure at the same time in Embodiment 1, this embodiment uses the restoration of the gas pressure of the housing 1 and the placement cavity 23 to restore the gas pressure in turn. The pressure difference during the restoration process is used to adjust the liquid level of the discharge pipe 3, thereby driving the rotating plate 11 to move and switch the open state of the rotating plate 11, reducing energy consumption and further saving maintenance costs.

[0044] Example 3, as Figures 2-6 Based on Embodiment 2, a contact plate 19 is fixedly connected to one side of the rotating plate 11. The rotation trajectory of the contact plate 19 is adapted to the cross-sectional shape of the bottom of the housing 1, so as to rotate and descend to push the tar residue. A spring seat 16 is provided at the bottom of the float 7. The spring seat 16 is fixedly connected to the feed pipe 3. A movable plate 17 is movably provided at the top of the spring seat 16. The movable plate 17 is movably engaged with the feed pipe 3. The movable plate 17 can move vertically relative to the feed pipe 3 within a certain range. A second spring 18 is fixedly connected to the top of the spring seat 16. One end of the second spring 18 is fixedly connected to the movable plate 17 to push the movable plate 17 upward so that the movable plate 17 is held at the upper stop point of movement.

[0045] A fixed cylinder 801 is fixedly connected to one side of the top of the feed pipe 3. A movable rod 802 is slidably sleeved on one side of the fixed cylinder 801. The movable rod 802 is T-shaped and can move axially without disengaging from the fixed cylinder 801. A first spring 803 is movably installed inside the fixed cylinder 801. One end of the first spring 803 is fixedly connected to the movable rod 802 and is used to push the movable rod 802 out of the fixed cylinder 801. The movable rod 802 is located on the rotation trajectory of the rotating plate 11. After the movable plate 17 contacts the float 7, the movable rod 802 contacts the rotating plate 11. The linkage mechanism also includes a lever 20, which is fixedly connected to the corresponding main shaft 6. The axial direction of the lever 20 is adapted to the radial direction of the main shaft 6. The connecting handle 401 is coaxially connected to the contact handle 21. The rotation trajectory of the lever 20 and the rotation trajectory of the contact handle 21 partially intersect. That is, when the float 7 descends and drives the connecting handle 401 to rotate, causing the contact handle 21 to rotate to one side, the main shaft 6 rotates and drives the lever 20 to rotate, which can resist the contact handle 21 and continue to drive the contact handle 21 to overcome the elastic force of the first spring 803 and the second spring 18 to rotate.

[0046] During the feeding process, the float 7 descends, driving the rotating plate 11 to rotate until the bottom of the float 7 contacts the movable plate 17. The second spring 18 pushes the movable plate 17 upwards, limiting the descent of the float 7. At this time, the rotating plate 11 rotates to the end near the moving rod 802. The rotating plate 11 and the contact plate 19 are located on opposite sides of the baffle plate 9. The end of the connecting handle 401 rotates to be on the rotation path of the actuating rod 20. The main shaft 6 rotates, driving the actuating rod 20 to rotate. The actuating rod 20 rotates until it abuts against the contact handle 21, driving the contact handle 21 to rotate until the contact handle 21 rotates out of contact with the actuating rod 20. During the rotation process, the contact handle 21 rotates, causing the connecting handle 401 to rotate coaxially. This drives the rotating plate 11 to rotate, causing the rotating plate 11 to drive the contact plate 19 to rotate around the axis of the transmission shaft 10. The rotating contact plate 19 rotates and descends to scrape off the material, improving the material feeding efficiency. At the same time, it drives the rotating plate 11 away from the baffle plate 9 and impacts the moving rod 802, thereby causing the contact plate 19 and the rotating plate 11 to vibrate at the top opening of the feeding pipe, thus getting rid of the attached material and reducing the amount of material attached to the contact plate 19 and the rotating plate 11. This achieves the effect of improving the feeding efficiency while reducing the amount of material attached.

[0047] A tar residue treatment process includes the following steps:

[0048] S1: Maintain normal pressure in placement chamber 23, purge inert gas into shell 1 and perform material loading operation;

[0049] S2: Adjust the vacuum level in the placement chamber 23 and the shell 1 to dry the material under negative pressure;

[0050] S3: Maintain the negative pressure state in the placement chamber 23 and the shell 1, adjust the mechanism to open the rotating plate 11, so that the material falls into the liquid in the feed pipe 3 for cooling, and transport the material in the liquid to the placement chamber 23 through the slag removal mechanism 5.

[0051] S4: Restore the air pressure in the placement chamber 23 and the shell 1 to normal pressure, and prepare for the next round of material drying.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum paddle dryer for treating tar residue, comprising a shell (1), wherein a feed inlet (2) is provided on one side of the top of the shell (1), and a main shaft (6) is rotatably arranged on the inner side of the shell (1), characterized in that, A feeding pipe (3) is fixedly connected to one side of the bottom of the housing (1). Liquid is filled in the feeding pipe (3) through a pipe. The liquid can separate the housing (1) from the cavity on the side of the feeding pipe (3) away from the housing (1). A baffle plate (9) is fixedly installed on the side of the housing (1) near the feeding pipe (3). A drive shaft (10) is installed on one side of the baffle plate (9). A rotating plate (11) is installed on one side of the drive shaft (10) to cooperate with the baffle plate (9) to block the material. An adjustment mechanism is installed in the housing (1). The drive shaft (10) is used to drive the rotating plate (11) to rotate. The adjustment mechanism is used to drive the rotating plate (11) to rotate around the axis of the drive shaft (10), adjust the distance between the bottom of the rotating plate (11) and the inner wall of the feed pipe (3), and switch the opening state of the channel between the bottom of the baffle plate (9) and the bottom of the inner wall of the housing (1).

2. The vacuum paddle dryer for treating tar residue according to claim 1, characterized in that, A filter plate is fixedly installed on one side of the top of the feed pipe (3), and a placement cavity (23) is formed between the filter plate and the inner wall of the feed pipe (3). A chain plate slag removal mechanism (5) is installed at the bottom of the feed pipe (3), and a closed discharge pipe with a valve is fixedly installed at the bottom of the placement cavity (23).

3. A vacuum paddle dryer for treating tar residue according to claim 2, characterized in that, Two connecting blocks (14) are fixedly connected to one side of the drive shaft (10). The rotating plate (11) is fixedly connected to the connecting block (14). The shape of the rotating plate (11) is adapted to the cross-sectional shape of the corresponding position of the housing (1). The baffle plate (9) is rotatably sleeved with the main shaft (6).

4. A vacuum paddle dryer for treating tar residue according to claim 2, characterized in that, The feed pipe (3) is V-shaped. The adjustment mechanism includes a float (7) and a transmission mechanism (4). Two guide plates (22) are fixedly connected to the top of the feed pipe (3). A transmission rod (12) is fixedly connected to the top of the float (7). A transmission block (13) is fixedly connected to the top of the transmission rod (12). A connecting sleeve (15) is fixedly connected to the side of the baffle plate (9) near the bottom. The vertical movement of the transmission block (13) can drive the transmission shaft (10) to rotate through the transmission mechanism (4). When the float (7) descends, it drives the rotating plate (11) to rotate and move away from the baffle plate (9).

5. A vacuum paddle dryer for treating tar residue according to claim 4, characterized in that, The transmission mechanism (4) includes a connecting handle (401), which is rotatably connected to the connecting sleeve (15) via a rotating shaft. A connecting rod (402) is fixedly provided on one side of the connecting handle (401), and the connecting rod (402) is slidably sleeved with the transmission block (13). Two transmission gears (403) are rotatably provided on the inner side of the connecting sleeve (15).

6. A vacuum paddle dryer for treating tar residue according to claim 5, characterized in that, Both guide plates (22) are slidably connected to the float (7), the two transmission gears (403) mesh with each other, the transmission shaft (10) is fixedly sleeved with the corresponding transmission gear (403), and the connecting handle (401) is coaxially connected to the corresponding transmission gear (403).

7. A vacuum paddle dryer for treating tar residue according to claim 5, characterized in that, The adjustment mechanism also includes a lever (20), which is fixedly connected to the corresponding main shaft (6). A contact plate (19) is fixedly connected to one side of the rotating plate (11). A spring seat (16) is provided at the bottom of the float (7). A movable plate (17) is movably provided at the top of the spring seat (16). A second spring (18) is fixedly connected to the top of the spring seat (16). A telescopic mechanism (8) is fixedly connected to one side of the top of the feed tube (3). A contact handle (21) is coaxially connected to the connecting handle (401).

8. A vacuum paddle dryer for treating tar residue according to claim 7, characterized in that, The spring seat (16) is fixedly connected to the feed tube (3), the movable plate (17) is movably engaged with the feed tube (3), one end of the second spring (18) is fixedly connected to the movable plate (17), the telescopic mechanism (8) includes a fixed cylinder (801), the fixed cylinder (801) is fixedly connected to the feed tube (3), a moving rod (802) is slidably sleeved on one side of the fixed cylinder (801), the moving rod (802) is "T" shaped, a first spring (803) is movably arranged inside the fixed cylinder (801), one end of the first spring (803) is fixedly connected to the moving rod (802).

9. A vacuum paddle dryer for treating tar residue according to claim 1, characterized in that, The number of main shafts (6) is set to two, and several stirring blades are fixedly arranged on the outer side of the main shafts (6).

10. A tar residue treatment process, using the vacuum paddle dryer for tar residue treatment as described in claim 2, characterized in that, Includes the following steps: S1: Maintain normal pressure in the placement chamber (23), purge inert gas into the shell (1) and perform material loading operation; S2: Adjust the vacuum level in the placement chamber (23) and the shell (1) to dry the material under negative pressure; S3: Maintain the negative pressure state in the placement chamber (23) and the shell (1), adjust the mechanism, open the rotating plate (11), so that the material falls into the liquid in the feed pipe (3) for cooling, and transport the material in the liquid to the placement chamber (23) through the slag removal mechanism (5). S4: Restore the air pressure in the placement chamber (23) and the shell (1) to normal pressure, and wait for the next round of material drying operation.

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