A distillation still
By introducing a filter cartridge and spiral blades into the distillation kettle, the problem of impurities adhering to turpentine feedstock was solved, achieving efficient solid-liquid separation and safe and convenient cleaning, improving heat transfer efficiency and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANGYANG SENCHENGLINHUA CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
When processing turpentine feedstock, solid impurities in traditional distillation kettles tend to adhere to the kettle walls, leading to reduced heat transfer efficiency, difficulty in cleaning, and potential safety hazards.
A distillation vessel with a filter cylinder and spiral blades was designed. The spiral blades are driven by a motor to create liquid flow pressure, which traps solid residue on the filter screen. The filter cylinder can be periodically lifted out of the vessel for cleaning, avoiding manual entry into the vessel for operation.
It achieves efficient solid-liquid separation, reduces scale buildup on the vessel wall, improves heat transfer efficiency, reduces maintenance costs and energy consumption, and makes operation safer and more convenient.
Smart Images
Figure CN224331517U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distillation equipment, and in particular to a distillation kettle. Background Technology
[0002] Distillation kettles are key pieces of equipment widely used in material separation, purification, and solvent recovery. Traditional distillation kettles typically have a slag discharge port at the bottom for discharging reaction residues or concentrated products. The raw material state for turpentine oil distillation includes both solid components (represented by rosin) and liquid forms (such as clarified resin or crude sulfate turpentine oil), depending on the production process. Crude sulfate turpentine oil may contain mechanical impurities such as bark fragments, fibers, and sand. These residues gradually carbonize and form scale, reducing heat transfer efficiency and potentially causing localized overheating, affecting product quality. Furthermore, the mechanical mechanisms for periodically cleaning the interior of the distillation kettle are complex, increasing costs, and requiring personnel to enter the kettle for cleaning is labor-intensive and unsafe. Therefore, optimization of existing distillation kettles is necessary. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a distillation vessel that solves the problem that impurities in turpentine raw materials easily adhere to the vessel wall.
[0004] According to an embodiment of this utility model, a distillation vessel includes a vessel body, with an inlet and an outlet respectively provided on the side of the top of the vessel body, and a slag discharge hole provided at the bottom. It also includes a sealing cap, several first telescopic rods, a filter cylinder, a motor, and spiral blades. An insertion hole is provided at the center of the top of the vessel body, and the sealing cap is located at the top of the insertion hole and completely covers it. The first telescopic rods are used to drive the sealing cap to move vertically. Several downwardly extending connecting rods are fixedly provided on the bottom surface of the sealing cap. The top of the filter cylinder is open, and a filter screen is provided at the bottom of the filter cylinder. The filter cylinder is disposed inside the vessel body and coaxial with the vessel body. A gap is provided between the top opening of the filter cylinder and the top of the vessel body. The top of the filter cylinder and the bottom of the connecting rods are fixed. The motor is fixedly disposed on the top of the sealing cap, and the output shaft of the motor extends downward into the interior of the vessel body. The output shaft and the sealing cap are connected by a dynamic seal. The spiral blades are fixedly disposed at the bottom end of the output shaft and located inside the filter cylinder. The stroke of the first telescopic rod is greater than the distance from the bottom of the filter cylinder to the top of the vessel body.
[0005] The technical principle of this utility model is as follows: the motor drives the spiral blades to generate downward liquid pressure, causing the liquid to flow from top to bottom in the filter cylinder. Solid residues are trapped on the bottom filter screen surface, while the filtrate passes through the filter screen and is discharged. The entire filter cylinder is periodically lifted vertically to the outside of the reactor body by a telescopic rod to achieve slag discharge and filter screen cleaning.
[0006] Preferably, the sealing cap is square, and the top of the insertion hole is provided with a countersunk hole that is adapted to the sealing cap.
[0007] Preferably, the top of the vessel body is provided with a plurality of second telescopic rods surrounding the sealing cover. The second telescopic rods are horizontally arranged, with the fixed end of the second telescopic rods fixedly connected to the top of the vessel body and the movable end of the second telescopic rods facing the sealing cover. A plurality of pressing holes are provided around the side wall of the sealing cover. The bottom surface of the pressing holes is an inclined surface, with the lower side of the inclined surface close to the second telescopic rod. The movable end of the second telescopic rod is provided with a pressing block adapted to the pressing hole, and the bottom surface of the pressing hole is provided with an inclined surface adapted to the inclined surface.
[0008] Preferably, the depth of the clamping hole is greater than the insertion depth of the clamping block.
[0009] Preferably, an annular sealing ring is provided between the sealing cap and the bottom surface of the countersunk hole.
[0010] Preferably, a guide tube is provided at the bottom of the filter cartridge, and the bottom of the guide tube is close to the bottom of the vessel body.
[0011] Preferably, the first telescopic rod is vertical and surrounds the sealing cover. The fixed end of the first telescopic rod is fixedly connected to the top of the vessel body. The movable end of the first telescopic rod extends upward. A transverse connecting plate is fixedly provided at the end of the movable end. An extension rod is fixedly provided below one side of the transverse connecting plate. The bottom of the extension rod is fixedly connected to the sealing cover.
[0012] Preferably, the top of the vessel is provided with a support frame for workers to stand on.
[0013] Compared to existing technologies, this invention offers the following advantages: The motor-driven spiral blades create a circulating liquid flow, allowing the liquid to pass through the bottom filter screen for rapid filtration, while solid residue is trapped inside the filter cartridge. A telescopic rod drives the entire filter cartridge to rise and fall, lifting the residue outside the vessel for cleaning, eliminating the need for manual entry and making operation safer and more convenient. The bottom filter screen centrally traps residue, facilitating cleaning and replacement, and reducing maintenance costs. It also reduces scale buildup on the vessel wall, improving heat transfer efficiency and lowering energy consumption. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the pressing hole structure of this utility model.
[0016] In the above attached figures: 1. Kettle body; 2. Heating tube; 3. Feed inlet; 4. Exhaust outlet; 5. First telescopic rod; 6. Horizontal connecting plate; 7. Extension rod; 8. Motor; 9. Sealing cover; 10. Connecting rod; 11. Filter cylinder; 12. Spiral blade; 13. Guide tube; 14. Limiting sleeve; 15. Clamping block; 16. Inclined surface; 17. Clamping hole; 18. Second telescopic rod. Detailed Implementation
[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0018] like Figure 1 As shown in the figure, this utility model embodiment proposes a distillation vessel, including a vessel body 1. The top side of the vessel body 1 is respectively provided with a feed inlet 3 and an exhaust outlet 4, and the bottom is provided with a slag discharge hole. Valves are provided at the feed inlet 3, exhaust outlet 4, and slag discharge hole. The raw liquid enters the vessel body 1 through the feed inlet 3, and the steam generated by heating the raw liquid is discharged through the exhaust outlet 4. The slag discharge hole is used to discharge residue. A heating tube 2 is arranged around the inner wall of the vessel body 1, and the heating tube 2 is heated by steam. The distillation vessel also includes a sealing cap 9, several first telescopic rods 5, a filter cylinder 11, a motor 8, and spiral blades 12. An insertion hole is provided at the center of the top of the vessel body 1. The insertion hole is a circular hole, and the sealing cap 9 is located at the top of the insertion hole and completely covers it. The sealing cap 9 and the vessel body 1 are sealed through a contact surface. The first telescopic rod 5 is used to drive the sealing cover 9 to move vertically. The first telescopic rod 5 is located on the side of the sealing cover 9. Several downwardly extending connecting rods 10 are fixedly provided on the bottom surface of the sealing cover 9. The connecting rods 10 extend downward from the insertion hole. The top of the filter cylinder 11 is open. A filter screen is provided at the bottom of the filter cylinder 11. The side wall of the filter cylinder 11 is a sealed structure. The filter cylinder 11 is located inside the vessel body 1 and is coaxial with the vessel body 1. The top opening of the filter cylinder 11 and the top of the vessel body 1 are separated. The top of the filter cylinder 11 and the bottom of the connecting rod 10 are fixed. The connecting rod 10 keeps the filter cylinder 11 separated from the top of the vessel body 1. The raw liquid can enter the interior of the filter cylinder 11 from the top of the filter cylinder 11. The motor 8 is fixedly mounted on the top of the sealing cover 9. The output shaft of the motor 8 extends downward into the interior of the vessel body 1. The output shaft and the sealing cover 9 are connected by a dynamic seal. The spiral blade 12 is fixedly mounted at the bottom end of the output shaft and located inside the filter cylinder 11. When the motor 8 drives the spiral blade 12 to rotate, it drives the raw liquid to flow from top to bottom inside the filter cylinder 11, thereby intercepting impurities and reducing the amount of impurities adhering to the inner wall of the vessel body 1 during distillation. The stroke of the first telescopic rod 5 is greater than the distance from the bottom of the filter cylinder 11 to the top of the vessel body 1. When maintenance of the distillation vessel is required, the first telescopic rod 5 extends upward, and the sealing cover 9 is lifted through the extension rod 7. Then, the operator cleans the impurities inside the filter cylinder 11 from the outside of the distillation vessel.
[0019] Preferably, the sealing cap 9 is square, and the top of the insertion hole has a countersunk hole that fits the sealing cap 9. The thickness of the sealing cap 9 is greater than the depth of the countersunk hole. After the bottom of the sealing cap 9 enters the countersunk hole, the corners of the square sealing cap 9 and the countersunk hole effectively prevent the sealing cap 9 from rotating due to the torque generated when the motor 8 is running.
[0020] like Figure 2 As shown, preferably, a plurality of second telescopic rods 18 are arranged around the top of the vessel body 1 surrounding the sealing cover 9. The second telescopic rods 18 are horizontally arranged, and the fixed ends of the second telescopic rods 18 are fixedly connected to the top of the vessel body 1. The movable ends of the second telescopic rods 18 face the sealing cover 9. A plurality of pressing holes 17 are arranged around the side wall of the sealing cover 9. The bottom surface of the pressing holes 17 is an inclined surface 16, and the lower side of the inclined surface 16 is close to the second telescopic rods 18. The movable end of the second telescopic rods 18 is provided with a pressing block 15 adapted to the pressing hole 17. The bottom surface of the pressing block 15 is provided with an inclined surface adapted to the inclined surface 16. In this embodiment, a limit sleeve 14 is fixedly provided on the top of the vessel body 1 to prevent the fixed end of the second telescopic rods 18 from bearing a large radial force when the pressure of the vessel body 1 is too high, which would cause the gap to be too large and prevent the sealing cover 9 from being pressed tightly. When the sealing cap 9 needs to seal the vessel body 1, the second telescopic rod 18 causes the clamping block 15 to insert into the clamping hole 17. The unique inclined surface 16 of the bottom surface of the clamping hole 17 plays a crucial role. The inclined surface on the clamping block 15 fits into the inclined surface of the bottom surface of the clamping hole 17. At this time, the second telescopic rod 18 applies a horizontal thrust to the clamping block 15. However, due to the cooperation of the two inclined surfaces, this horizontal thrust is decomposed into two components: a vertically downward component, which acts directly on the sealing cap 9, causing the sealing cap 9 to be subjected to a downward pressure. Under this pressure, the surface contact between the sealing cap 9 and the top of the vessel body 1 becomes tighter, effectively sealing any possible gaps and preventing steam leakage inside the vessel body 1 during distillation. The horizontal component of the force causes friction between the clamping block 15 and the side wall of the clamping hole 17, further enhancing the stability of the clamping and ensuring that the clamping block 15 will not easily come out of the clamping hole 17 due to pressure changes or other factors inside the vessel body 1 during the distillation process.
[0021] Preferably, the depth of the clamping hole 17 is greater than the insertion depth of the clamping block 15. This avoids a situation where the end face of the clamping hole 17 abuts against the side wall of the clamping block 15, thus failing to clamp the inclined surface 16.
[0022] Preferably, an annular sealing ring is provided between the sealing cap 9 and the bottom surface of the countersunk hole. The annular sealing ring can effectively enhance the sealing performance of the distillation vessel and prevent internal vapor leakage during distillation.
[0023] Preferably, a guide tube 13 is provided at the bottom of the filter cylinder 11, with the bottom of the guide tube 13 close to the bottom of the vessel body 1. This allows the raw liquid to move to the bottom of the vessel body 1 after being discharged from the bottom of the filter cylinder 11, which facilitates the liquid at the bottom of the vessel body 1 to enter the interior of the filter cylinder 11 through circulation.
[0024] Preferably, the first telescopic rod 5 is vertical and surrounds the sealing cover 9. The fixed end of the first telescopic rod 5 is fixedly connected to the top of the vessel body 1, and the movable end of the first telescopic rod 5 extends upward. A transverse connecting plate 6 is fixedly installed at the end of the movable end, and an extension rod 7 is fixedly installed below one side of the transverse connecting plate 6. The bottom of the extension rod 7 is fixedly connected to the sealing cover 9. In this embodiment, a gap is provided between the movable end and the sealing cover 9 in the vertical direction to facilitate the second telescopic rod 18 to further press the sealing cover 9. A connecting sleeve is fixedly installed at the top of the sealing cover 9, and the bottom end of the extension rod 7 is inserted into the connecting sleeve and fixedly installed with a limiting plate. A pressure plate is fixedly installed at the top of the connecting sleeve by bolts, and a through hole for the extension rod 7 to pass through is provided in the center of the pressure plate. The depth of the connecting sleeve is greater than the thickness of the limiting plate.
[0025] Preferably, the top of the vessel body 1 is provided with a support frame for workers to stand on. This facilitates workers to reach the top of the vessel body 1 to clean the filter cartridge 11 and avoids damage caused by stepping on the vessel body 1.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A distillation vessel, comprising a vessel body (1), wherein a feed inlet (3) and an exhaust outlet (4) are respectively provided on the side of the top of the vessel body (1), and a slag discharge hole is provided at the bottom, characterized in that: It also includes a sealing cap (9), several first telescopic rods (5), a filter cylinder (11), a motor (8), and a spiral blade (12). An insertion hole is provided at the center of the top of the vessel body (1). The sealing cap (9) is located at the top of the insertion hole and completely covers it. The first telescopic rods (5) are used to drive the sealing cap (9) to move in the vertical direction. Several downward-extending connecting rods (10) are fixedly provided on the bottom surface of the sealing cap (9). The top of the filter cylinder (11) is open. A filter screen is provided at the bottom of the filter cylinder (11). The filter cylinder (11) is located inside the vessel body (1) and is connected to the vessel body. (1) Coaxial, the top opening of the filter cylinder (11) and the top of the vessel body (1) are spaced apart, the top of the filter cylinder (11) and the bottom of the connecting rod (10) are fixed; the motor (8) is fixedly installed on the top of the sealing cover (9), the output shaft of the motor (8) extends downward to the inside of the vessel body (1), the output shaft and the sealing cover (9) are connected by dynamic sealing, the spiral blade (12) is fixedly installed at the bottom of the output shaft and located inside the filter cylinder (11); the stroke of the first telescopic rod (5) is greater than the distance from the bottom of the filter cylinder (11) to the top of the vessel body (1).
2. The distillation vessel as described in claim 1, characterized in that: The sealing cap (9) is square, and the top of the insertion hole is provided with a countersunk hole that is adapted to the sealing cap (9).
3. The distillation vessel as described in claim 1, characterized in that: The top of the vessel body (1) is provided with a plurality of second telescopic rods (18) surrounding the sealing cover (9). The second telescopic rods (18) are horizontally arranged. The fixed end of the second telescopic rods (18) is fixedly connected to the top of the vessel body (1). The movable end of the second telescopic rods (18) faces the sealing cover (9). A plurality of pressing holes (17) are provided around the side wall of the sealing cover (9). The bottom surface of the pressing hole (17) is an inclined surface (16). The lower side of the inclined surface (16) is close to the second telescopic rod (18). The movable end of the second telescopic rod (18) is provided with a pressing block (15) that matches the pressing hole (17). The bottom surface of the pressing block (15) is provided with an inclined surface that matches the inclined surface (16).
4. A distillation vessel as described in claim 3, characterized in that: The depth of the clamping hole (17) is greater than the insertion depth of the clamping block (15).
5. A distillation vessel as described in claim 2, characterized in that: An annular sealing ring is provided between the sealing cap (9) and the bottom surface of the countersunk hole.
6. A distillation vessel as described in claim 1, characterized in that: The bottom of the filter cylinder (11) is provided with a flow guide cylinder (13), and the bottom of the flow guide cylinder (13) is close to the bottom of the vessel body (1).
7. A distillation vessel as described in claim 3, characterized in that: The first telescopic rod (5) is vertical and surrounds the sealing cover (9). The fixed end of the first telescopic rod (5) is fixedly connected to the top of the vessel body (1). The movable end of the first telescopic rod (5) extends upward. A transverse connecting plate (6) is fixedly provided at the end of the movable end. An extension rod (7) is fixedly provided below one side of the transverse connecting plate (6). The bottom of the extension rod (7) is fixedly connected to the sealing cover (9).
8. A distillation vessel as described in claim 1, characterized in that: The top of the vessel body (1) is provided with a support frame for workers to stand on.