Rosin size dissolving kettle
By using a combination of heating frame and hot air pipe in the dissolving vessel, the problem of uneven heating in the middle of the dissolving vessel is solved, achieving uniform heating and efficient dissolution of the solution, and simplifying the post-dissolution processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGYOU FUTIAN PAPERCHEMICAL CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-12
AI Technical Summary
In existing dissolving vessels, the middle part of the solution is difficult to heat effectively during the heating process, which affects the dissolving effect.
The system employs a combination of a heating frame and a hot air duct. Hot air is delivered to the inside of the heating frame via the hot air duct, and combined with a stirring shaft and stirring teeth, it achieves uniform heating of the solution.
It improves the heating uniformity of the dissolving vessel, enhances the dissolving effect, and facilitates the export of the dissolved solution and the cleaning of the structure.
Smart Images
Figure CN224221273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking additives processing technology, and in particular to a rosin dissolving kettle. Background Technology
[0002] Rosin is a commonly used sizing agent in papermaking. It is often prepared by alkaline dissolution, which involves adding alkaline solutions such as sodium hydroxide or potassium hydroxide to dissolve the rosin and dilute it into an emulsion for use. A dissolving kettle is used for this dissolution process.
[0003] When preparing rosin gum, it is usually necessary to heat the solution while continuously stirring the solution and rosin gum. Currently used dissolving kettles typically use heating rods or heating wires built into the shell for heating. In order not to affect the stirring structure, the heating range is very limited, and the solution in the very center of the dissolving kettle is difficult to heat, which affects the dissolution effect. Summary of the Invention
[0004] This invention provides a rosin dissolving kettle that can uniformly heat the solution, thereby improving the dissolving effect.
[0005] In a first aspect, this utility model provides a rosin dissolving kettle, specifically comprising: a base;
[0006] A dissolving vessel body is placed in the center of the top of the base; two electric cylinders are installed on the left and right sides of the top of the base, and a top cover is fixed to the top of the two electric cylinders. A set of heating frames is welded to the bottom of the top cover. A hot air pipe is connected to the top left and right sides of the heating frame, and a positioning plate is welded to the bottom left and right sides of the top cover; a stirring shaft is rotatably installed in the center of the heating frame, and five sets of stirring teeth are installed on the outside of the stirring shaft. A motor is also installed on the top of the top cover through a bracket, and the bottom end of the motor's main shaft is fixedly connected to the top end of the stirring shaft.
[0007] The stirring shaft has five cylindrical protrusions equidistantly arranged on its outer side. Three of the cylindrical protrusions are located in the three open slots in the middle of the heating frame, and the other two cylindrical protrusions are respectively attached to the top and bottom of the heating frame.
[0008] The heating rack has arc-shaped outer walls on both the left and right sides. When the top cover is lowered to be in close contact with the top surface of the dissolving vessel body, the heating rack will be located inside the dissolving vessel body and in close contact with the inner wall of the dissolving vessel body.
[0009] The base has a frustum at the top center, and the top of the frustum has a circular groove with an inner diameter equal to the outer diameter of the dissolving vessel.
[0010] The heating frame has arc-shaped vertical plates on the left and right sides, and the two arc-shaped vertical plates are connected by four horizontal plates. The heating frame has a hollow structure, and two hot air pipes are connected to the top left and right sides of the inner cavity of the heating frame, respectively.
[0011] The outer wall of the heating frame is made of copper, and a layer of rubber is also attached to the bottom edge of the top cover.
[0012] The positioning plate is an arc-shaped plate. An arc-shaped opening is provided on the inner side of the handle on both the left and right sides of the dissolving vessel body. When the top cover is moved down to be in close contact with the top surface of the dissolving vessel body, the positioning plate will be inserted into the arc-shaped opening on the inner side of the handle and be in close contact with the inner wall of the arc-shaped opening.
[0013] This utility model provides a rosin gum dissolving kettle, which has the following beneficial effects:
[0014] The cavity inside the heating frame of this invention allows hot air to circulate. When dissolving rosin, the heating frame is submerged in the solution and comes into contact with different parts of the solution. When heating the solution, it can also heat the solution in the middle. Combined with the stirring teeth constantly driving the solution to flow, the solution can be heated evenly, thereby improving the dissolution effect. Moreover, the heating frame is integrated with the top cover. When disassembled, the heating frame, stirring shaft, and stirring teeth will detach from the dissolving vessel body together, which facilitates the export of the dissolved solution and the rinsing of each part of the structure. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0017] In the attached diagram:
[0018] Figure 1 A schematic diagram of the overall structure of this application from the main axis side is shown;
[0019] Figure 2 This application shows a schematic diagram of the main shaft side after the top cover has been moved upwards;
[0020] Figure 3 This shows a schematic diagram of the spindle side of the dissolving vessel body after it has been cut apart in this application;
[0021] Figure 4 This shows a schematic diagram of the spindle side after both the melting vessel body and the heating frame have been cut apart in this application;
[0022] Figure 5 This paper shows a schematic diagram of the structure of the heating frame after partial cross-section in this application;
[0023] Figure 6 A schematic diagram of the structure of the stirring shaft and stirring teeth in this application is shown;
[0024] List of reference numerals
[0025] 1. Base; 2. Dissolving vessel body; 3. Electric cylinder; 4. Top cover; 5. Heating frame; 6. Hot air duct; 7. Positioning plate; 8. Stirring shaft; 9. Stirring teeth; 10. Motor. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] Example 1: Please refer to Figures 1 to 6 :
[0028] This utility model proposes a rosin dissolving kettle, comprising: a base 1;
[0029] A dissolving vessel body 2 is placed at the top center of the base 1. The base 1 supports the upper part of the device structure, while the dissolving vessel body 2 holds the rosin and alkaline solution to be dissolved. Two electric cylinders 3 are installed on the left and right sides of the top of the base 1. A top cover 4 is fixed to the top of the two electric cylinders 3, and a heating frame 5 is welded to the bottom of the top cover 4. A hot air pipe 6 is connected to the top left and right sides of the heating frame 5, and a positioning plate 7 is welded to the bottom left and right sides of the top cover 4. The electric cylinders 3 can adjust the height of the top cover 4 when they extend or retract. The top cover 4 supports the heating frame 5 and the motor 10, and can also close the opening at the top of the dissolving vessel body 2. The hot air pipes 6 can introduce hot air into the cavity inside the heating frame 5. When the air flows inside the heating rack 5, it can transfer heat through the outer wall of the heating rack 5 to the alkaline solution inside the dissolving vessel body 2, thereby heating the alkaline solution evenly. The positioning plate 7 can lock the top cover 4 and the dissolving vessel body 2 in the horizontal direction, which can prevent the dissolving vessel body 2 from shaking during the stirring process and prevent the heating rack 5 from rotating relative to the dissolving vessel body 2. A stirring shaft 8 is rotatably installed in the middle of the heating rack 5, and five sets of stirring teeth 9 are installed on the outside of the stirring shaft 8. A motor 10 is also installed on the top of the top cover 4 through a bracket, and the bottom end of the main shaft of the motor 10 is fixedly connected to the top end of the stirring shaft 8. When the motor 10 is working, it can drive the stirring shaft 8 and the stirring teeth 9 to rotate continuously, thus stirring the rosin and alkaline solution evenly and completing the dissolution.
[0030] In this embodiment, as Figures 2-4 and Figure 6 As shown, five cylindrical protrusions are equidistantly arranged on the outer side of the stirring shaft 8. Three of the cylindrical protrusions are located in the three open slots in the middle of the heating frame 5, and the other two cylindrical protrusions are tightly attached to the top and bottom of the heating frame 5, respectively. Therefore, the stirring shaft 8 will not sway up and down in the middle of the heating frame 5, ensuring the stability of the stirring shaft 8 when rotating.
[0031] In this embodiment, as Figures 2-4 As shown, the outer walls on both sides of the heating rack 5 are arc-shaped. When the top cover 4 moves down to be in close contact with the top surface of the dissolving vessel body 2, the heating rack 5 will be located inside the dissolving vessel body 2 and in close contact with the inner wall of the dissolving vessel body 2. When dissolving rosin, the electric cylinder 3 can be controlled to retract and drive the top cover 4 to move down to the bottom until the top cover 4 is in close contact with the top surface of the dissolving vessel body 2. When stirring and dissolving rosin, the outer walls on both sides of the heating rack 5 can support the inner side of the dissolving vessel body 2 and prevent the dissolving vessel body 2 from shaking.
[0032] In this embodiment, as Figure 3 and Figure 4 As shown, a frustum is provided at the top center of the base 1, and a circular groove with an inner diameter equal to the outer diameter of the dissolving vessel body 2 is provided at the top of the frustum. When placing the dissolving vessel body 2, its bottom can be placed in the circular groove at the top of the frustum, which facilitates the positioning of the dissolving vessel body 2.
[0033] In this embodiment, as Figures 2-5 As shown, the heating rack 5 has arc-shaped vertical plates on both sides, and the two arc-shaped vertical plates are connected by four horizontal plates. The heating rack 5 has a hollow structure, and two hot air pipes 6 are connected to the top left and right sides of the inner cavity of the heating rack 5, respectively. When in use, the hot air pipes 6 will deliver hot air into the inner cavity of the heating rack 5. In this process, the hot air will first enter the inner cavity of one side of the arc-shaped vertical plate of the heating rack 5, and then enter the inner cavity of the other side of the arc-shaped vertical plate through the inner cavity of the middle horizontal plate of the heating rack 5. Finally, it will be discharged outward through the other hot air pipe 6. When the hot air flows, it can transfer heat through the outer wall of the heating rack 5 to the alkaline solution inside the dissolving vessel body 2. Moreover, the horizontal plates of the heating rack 5 are equidistantly arranged, so that the alkaline solution can be heated evenly.
[0034] In this embodiment, as Figures 1-5As shown, the positioning plate 7 is an arc-shaped plate. There is an arc-shaped opening on the inside of the handles on both sides of the dissolving vessel body 2. When the top cover 4 is lowered to be in close contact with the top surface of the dissolving vessel body 2, the positioning plate 7 will be inserted into the arc-shaped opening on the inside of the handle and be in close contact with the inner wall of the arc-shaped opening. When the top cover 4 is lowered, the positioning plate 7 at its bottom will be inserted into the arc-shaped opening on the inside of the handles on both sides of the dissolving vessel body 2. Therefore, the top cover 4 and the dissolving vessel body 2 can be locked in the horizontal direction, which can prevent the dissolving vessel body 2 from shaking during the stirring process and prevent the heating rack 5 from rotating relative to the dissolving vessel body 2.
[0035] Example 2, based on Example 1, such as Figures 1-6 As shown, the outer wall of the heating rack 5 is made of copper, and a layer of rubber is also attached to the bottom edge of the top cover 4. When hot air flows inside the heating rack 5, it can transfer heat through the outer wall of the heating rack 5 to the alkaline solution inside the dissolving vessel body 2, thereby heating the alkaline solution evenly. The copper shell of the heating rack 5 can enhance the heat conduction efficiency. When the top cover 4 is moved to the bottom, the rubber at its bottom edge will be in close contact with the top surface of the dissolving vessel body 2, thereby ensuring the seal and preventing the solution from leaking out during the stirring process.
[0036] The working principle of this embodiment is as follows: During installation, the device can be fixed to the ground by the base 1, and one of the hot air pipes 6 can be connected to the air outlet of an external heating fan. The electric cylinder 3 and motor 10 can be connected to an external controller and power supply. When using this device to dissolve rosin, first control the electric cylinder 3 to extend and push the top cover 4 to the top. Then, pour the rosin and alkaline solution into the dissolving vessel body 2. Next, control the electric cylinder 3 to retract and move the top cover 4 to the bottom until it is tightly against the top surface of the dissolving vessel body 2. At this point, the top cover 4 will close the opening at the top of the dissolving vessel body 2. Simultaneously, the heating rack 5, stirring shaft 8, and stirring teeth 9 will be submerged in the alkaline solution. Furthermore, the positioning plate 7 at the bottom of the top cover 4 will insert into the arc-shaped openings inside the handles on both sides of the dissolving vessel body 2. Therefore, the top cover 4 and the dissolving vessel body 2 can be locked horizontally, preventing the dissolving vessel body 2 from shaking during stirring and preventing the heating rack 5 from rotating relative to the dissolving vessel body 2. When the external heating fan and motor 10 are powered on, the heating fan blows hot air into one of the hot air pipes 6. This hot air pipe 6 then transports the hot air into the cavity inside the heating frame 5. During this process, the hot air first enters the cavity inside one side of the curved vertical plate of the heating frame 5, then passes through the cavity inside the horizontal plate in the middle of the heating frame 5 into the cavity inside the other side of the curved vertical plate, and finally is discharged outward through another hot air pipe 6. As the hot air flows, it transfers heat through the heating frame 5. The outer wall of the heating element transfers the alkaline solution to the inside of the dissolving vessel 2. The horizontal plates of the heating frame 5 are equidistantly arranged, which can heat the alkaline solution evenly. When the motor 10 is working, it can drive the stirring shaft 8 and the stirring teeth 9 to rotate continuously. Therefore, the rosin and alkaline solution can be stirred evenly and dissolved. After dissolution, the heating fan and motor 10 can be turned off, and the electric cylinder 3 can be controlled to extend and push the top cover 4 to the top. Then the dissolving vessel 2 can be moved forward and the dissolved solution can be poured out for use.
[0037] The following points should be noted in this article:
[0038] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0039] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
Claims
1. A rosin gum dissolving vessel, comprising: Base (1); characterized in that: A dissolving vessel body (2) is placed in the middle of the top of the base (1); two electric cylinders (3) are installed on the left and right sides of the top of the base (1), and a top cover (4) is fixed on the top of the two electric cylinders (3). A set of heating racks (5) is welded to the bottom of the top cover (4). A hot air pipe (6) is connected to the top left and right sides of the heating rack (5), and a positioning plate (7) is welded to the bottom left and right sides of the top cover (4); a stirring shaft (8) is rotatably installed in the middle of the heating rack (5), and five sets of stirring teeth (9) are installed on the outside of the stirring shaft (8). A motor (10) is also installed on the top of the top cover (4) through a bracket, and the bottom end of the main shaft of the motor (10) is fixedly connected to the top end of the stirring shaft (8).
2. The rosin dissolving kettle according to claim 1, characterized in that, The outer walls of the heating rack (5) on both the left and right sides are arc-shaped. When the top cover (4) moves down to be in close contact with the top surface of the dissolving vessel body (2), the heating rack (5) will be located inside the dissolving vessel body (2) and in close contact with the inner wall of the dissolving vessel body (2).
3. The rosin dissolving kettle according to claim 1, characterized in that, The heating rack (5) has arc-shaped vertical plates on the left and right sides. The two arc-shaped vertical plates are connected by four horizontal plates. The heating rack (5) has a hollow structure. Two hot air pipes (6) are connected to the top left and right sides of the inner cavity of the heating rack (5).
4. The rosin dissolving kettle according to claim 1, characterized in that, The positioning plate (7) is an arc-shaped plate. An arc-shaped opening is provided on the inner side of the handle on both the left and right sides of the dissolving vessel body (2). When the top cover (4) moves down to be in close contact with the top surface of the dissolving vessel body (2), the positioning plate (7) will be inserted into the arc-shaped opening on the inner side of the handle and be in close contact with the inner wall of the arc-shaped opening.
5. The rosin dissolving kettle according to claim 1, characterized in that, Five cylindrical protrusions are equidistantly arranged on the outer side of the stirring shaft (8), three of which are located in the three open slots in the middle of the heating frame (5), and the other two are attached to the top and bottom of the heating frame (5) respectively.
6. The rosin dissolving kettle according to claim 1, characterized in that, The base (1) has a frustum at the top center, and the top of the frustum has a circular groove with an inner diameter equal to the outer diameter of the dissolving vessel body (2).
7. The rosin dissolving kettle according to claim 1, characterized in that, The outer wall of the heating rack (5) is made of copper, and a layer of rubber is also pasted on the bottom edge of the top cover (4).