Efficient continuous pine tar melting device

Abstract

The utility model discloses a pine tar high -efficient continuous melting device relates to pine tar dissolving equipment technical field, including continuous melting kettle, the continuous melting kettle lower portion is equipped with the steam pipe of steam valve and pressure gauge, and this steam pipe outlet end intercommunication is equipped in the live steam coil of continuous melting kettle inside lower part, the continuous melting kettle bottom is equipped with the discharge port of slag valve, and the continuous melting kettle side wall is connected with the melting oil pipe of backflow valve, and this melting oil pipe upper end intercommunication the upper portion of continuous melting kettle, and this melting oil pipe lower end stretches into the continuous melting kettle and is located between the live steam coil with the discharge port of slag position, compared with prior art, the utility model can make the pine tar sinking in the bottom of the pot and the melting oil can fully contact melting, realizes pine tar high -efficient continuous melting, solves the pine tar continuous melting in the past, and a large number of pine tar particles sinking in the bottom of the pot are not completely melted, and the problem of high -temperature caking.

Description

Technical Field

[0001] This utility model relates to the technical field of rosin dissolving equipment, and in particular to a high-efficiency continuous rosin melting device. Background Technology

[0002] The main processes in rosin production include melting, filtration, drainage, clarification, and distillation. The melting process involves adding a specific ratio of rosin, solvent, and oxalic acid solution to a melting pot, then directly introducing steam to heat and agitate the materials, ensuring complete melting of the rosin and solvent. The solvent used in the melting process is turpentine oil obtained in the distillation process, while oxalic acid is added to remove iron from the rosin. The distillation process involves distilling the resin solution in a distillation pot to obtain rosin and turpentine oil.

[0003] In the current rosin production industry, the main technologies used in the rosin melting process are intermittent melting technology and continuous melting technology.

[0004] Continuous melting technology is a process in which the three steps of feeding, melting and discharging are carried out simultaneously and continuously.

[0005] The continuous melting technology process is described below, see Figure 1 : (1) Before starting the machine, confirm that all valves are closed and all instruments and equipment are operating normally.

[0006] (2) First, open the oxalic acid water valve F103 and inject sufficient oxalic acid water into the continuous melting pot 101. After water overflows from the discharge pipe, close the oxalic acid water valve F103.

[0007] (3) Open the steam valve F104 and introduce steam into the continuous melting pot 101 to heat the oxalic acid water in the pot to 90°C.

[0008] (4) When the temperature displayed by thermometer T102 reaches 90℃, open the rosin valve F101; start the rosin conveyor 202, control the speed of the conveyor motor, and make the feeding speed reach the required amount; open the melting oil valve F102, control the valve opening, and make the flow rate of the melting oil reach the required amount; open the oxalic acid water valve F103, control the valve opening, and make the flow rate of the oxalic acid water reach the required amount.

[0009] (5) Control the opening of steam valve F104 so that the temperature displayed by thermometer T102 is maintained between 92 and 97°C.

[0010] (6) After observing that material is flowing out of the discharge pipe, the device begins to enter stable operation.

[0011] (7) Calculate the sand removal cycle based on the sand content of the rosin and perform sand removal operations regularly. First, slowly open the slag discharge valve F106 and observe whether there are rosin particles in the drainage. If there are rosin particles, close the slag discharge valve F106 and open the spare steam valve F105 to spray the pot, so that the rosin particles settled at the bottom of the pot can be rolled, heated and melted. Spray the pot for 3-5 minutes, close the spare steam valve F105, and slowly open the slag discharge valve F106 again to observe whether there are rosin particles in the drainage. If there are still rosin particles, close the slag discharge valve F106 and perform the spraying operation again until there are no rosin particles in the drainage. Pay attention to the sand content in the drainage when removing slag, and close the slag discharge valve F106 after the sand and gravel have been removed.

[0012] The aforementioned continuous melting technology has the following problems: During continuous melting, because the density of the resin is lower than that of water, the resin and water easily separate into layers in the melting pot. The density of the rosin particles is greater than that of water, so the particles sink to the bottom of the pot before being completely melted. The melted oil, being less dense than water, has difficulty reaching the bottom of the pot, thus making the bottom a dead zone. When using a spare steam sprayer, the lack of solvent results in poor melting of the rosin particles. As the rosin particles accumulate at the bottom of the pot, they clump together under high temperature, clogging the slag discharge valve. Utility Model Content

[0013] The purpose of this invention is to provide a high-efficiency continuous rosin melting device, which can solve the problems of poor melting effect and easy agglomeration of rosin particles that settle at the bottom of the pot in existing continuous rosin melting pots.

[0014] To solve the above problems, the technical solution adopted by this utility model is as follows: It includes a continuous melting pot, with a steam pipe equipped with a steam valve and a pressure gauge at the lower part of the continuous melting pot. The steam pipe's outlet end is connected to a live steam coil located in the lower part of the continuous melting pot. The bottom of the continuous melting pot is equipped with a slag discharge port with a slag discharge valve. A melting oil pipe with a reflux valve is connected to the side wall of the continuous melting pot. The upper end of the melting oil pipe is connected to the upper part of the continuous melting pot, and the lower end of the melting oil pipe extends into the continuous melting pot, located between the live steam coil and the slag discharge port.

[0015] A more specific technical solution for the above-mentioned high-efficiency continuous rosin melting device can be as follows: There are two continuous melting pots, a front continuous melting pot and a rear continuous melting pot. The front continuous melting pot is connected to a rosin transition tank via a pipe. A rosin conveyor is installed between the front continuous melting pot and the pipe. The pipe is also connected to an oil pipe with a melting oil valve and a flow meter, and a water pipe with an oxalic acid water valve and a flow meter. The front continuous melting pot and the rear continuous melting pot are connected via a connecting pipe. A discharge pipe with a valve is installed at the top of the rear continuous melting pot, and this discharge pipe is connected to a filter device. A cleaning pipe with a cleaning valve is installed below the discharge pipe outlet of the rear continuous melting pot. A pipeline pump is connected to the input end of the melting oil pipe.

[0016] In some possible implementations, the melting oil pipe is connected at its upper end to the upper part of the front continuous melting pot, and at its lower end to a branch pipe with the reflux valve at both ends. The two ends of the branch pipe extend into the front continuous melting pot at a position between the live steam coil and the slag discharge port, and into the rear continuous melting pot at a position between the live steam coil and the slag discharge port, respectively.

[0017] In some possible implementations, the melting oil pipe is connected at its upper end to the upper part of the subsequent continuous melting pot, and at its lower end to a branch pipe with the reflux valve at both ends. The two ends of the branch pipe extend into the position between the live steam coil and the slag discharge port in the front continuous melting pot and the position between the live steam coil and the slag discharge port in the subsequent continuous melting pot, respectively.

[0018] In some possible implementations, the end of the connecting pipe that extends into the subsequent continuous melting pot extends to the lower middle part of the subsequent continuous melting pot.

[0019] In some possible implementations, there are two melting oil pipes. The upper end of one melting oil pipe is connected to the upper part of the front continuous melting pot, and the lower end of the melting oil pipe extends into the front continuous melting pot, located between the live steam coil and the slag discharge port. The upper end of the other melting oil pipe is connected to the upper part of the rear continuous melting pot, and the lower end of the melting oil pipe extends into the rear continuous melting pot, located between the live steam coil and the slag discharge port. Each melting oil pipe is equipped with a pipeline pump.

[0020] In some possible implementations, thermometers are installed on the bodies of the front continuous melting pot and the rear continuous melting pot, respectively.

[0021] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1. Because the side wall of the continuous melting pot is connected to a melting oil pipe with a reflux valve, the upper end of the melting oil pipe is connected to the upper part of the continuous melting pot, and the lower end of the melting oil pipe extends into the continuous melting pot and is located between the live steam coil and the slag discharge port. The melting oil pipe can introduce the melting oil into the bottom of the continuous melting pot, so that the rosin settled at the bottom of the pot can continue to contact and melt with the melting oil, realizing efficient and continuous melting of rosin. This solves the problem of incomplete melting and high-temperature agglomeration of a large number of rosin particles settled at the bottom of the pot in the previous continuous melting of rosin.

[0022] 2. This device can be improved on the existing continuous melting pot. After the device is debugged, it can operate continuously, stably and efficiently. Only the operation of discharging sand and gravel impurities needs to be performed periodically. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the existing technology.

[0024] Figure 2 This is a structural schematic diagram of Scheme 1 of this utility model.

[0025] Figure 3 This is a structural schematic diagram of embodiment two of this utility model.

[0026] Figure 4 This is a structural schematic diagram of Scheme 3 of this utility model.

[0027] Figure 5 This is a structural schematic diagram of Scheme 4 of this utility model.

[0028] Explanation of markings in the diagram: 1. Front continuous melting pot, 2. Rear continuous melting pot, 3. Steam pipe, 4. Live steam coil, 5. Slag discharge port, 6. Steam pipe, 7. Live steam coil, 8. Slag discharge port, 9. Pipe, 10. Rosin transition tank, 11. Rosin conveyor, 12. Oil pipe, 13. Water pipe, 14. Connecting pipe, 15. Discharge pipe, 16. Cleaning pipe, 17. Melting oil pipe, 18. Branch pipe, 19. Continuous melting pot, 20. Live steam coil, 21. Slag discharge port, 22. Front melting oil pipe, 23. Rear melting oil pipe, 24. Pipeline pump, 25. Live steam coil, 26. Pipeline pump. Detailed Implementation

[0029] To facilitate a clearer understanding of the aforementioned objectives, features, and advantages of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figure 2 The embodiment shown in Embodiment 1, the high-efficiency continuous melting device for rosin in Embodiment 1, includes two continuous melting pots, namely a front continuous melting pot 1 and a rear continuous melting pot 2. The lower part of the front continuous melting pot 1 is equipped with a steam pipe 3 with a steam valve F4 and a pressure gauge P1. The steam outlet of the steam pipe is connected to a live steam coil 4 located in the lower part of the front continuous melting pot 1. The bottom of the front continuous melting pot 1 is equipped with a slag discharge port 5 with a slag discharge valve F5. The lower part of the rear continuous melting pot 2 is equipped with a steam valve F11 and a pressure gauge P11. Steam pipe 6 of 2, the steam outlet of which is connected to live steam coil 7 located in the lower part of the rear continuous melting pot 2. The bottom of the rear continuous melting pot 2 is provided with slag discharge port 8 with slag discharge valve F9. The front continuous melting pot 1 is connected to the resin transfer tank 10 through pipe 9. A resin conveyor 11 is provided between the front continuous melting pot and pipe 9. The pipe is also connected to an oil pipe 12 with melting oil valve F2 and flow meter L1 and a water pipe 13 with oxalic acid water valve F3 and flow meter L2. The front continuous melting pot 1 and the rear continuous melting pot 2 are connected to the rosin transfer tank 10 through pipe 9. The melting pots 2 are connected by a connecting pipe 14. The end of the connecting pipe 14 that extends into the subsequent continuous melting pot 2 extends to the lower middle part of the subsequent continuous melting pot 2. The upper part of the subsequent continuous melting pot 2 is provided with a discharge pipe 15 with a valve, which is connected to a filter device. A cleaning pipe 16 with a cleaning valve F10 is installed below the discharge pipe of the subsequent continuous melting pot. The upper end of the melting oil pipe 17 is connected to the upper part of the subsequent continuous melting pot 2, and the lower end is connected to a branch pipe 18 with return valves at both ends. The two ends of the branch pipe are... Do not insert the pipe into the position between the live steam coil 4 and the slag discharge port 5 in the front continuous melting pot 1 and the position between the live steam coil 7 and the slag discharge port 8 in the rear continuous melting pot 2. The branch pipe 18 is equipped with a reflux valve F6 at the end connected to the front continuous melting pot 1 and a reflux valve F7 at the end connected to the rear continuous melting pot 2. The melting oil pipe 17 is equipped with a reflux valve F8 at the input end and is connected to a pipeline pump 24. The thermometer T2 and the thermometer T4 are respectively installed on the pot bodies of the front continuous melting pot 1 and the rear continuous melting pot 2.

[0032] In this implementation plan, the melting step is as follows: ① Before starting the machine, confirm that all valves are closed and all instruments and equipment are operating normally; ② First, open the oxalic acid water valve F3 and inject sufficient oxalic acid water into the forward continuous melting pot. The oxalic acid water enters the backward continuous melting pot 3 through the connecting pipe 14. At the same time, open the cleaning valve F10. After water overflows from the cleaning pipe 16, close the oxalic acid water valve F3 and the cleaning valve F10. ③ Open steam valves F4 and F11 to introduce steam into the forward continuous melting pot 1 and the rear continuous melting pot 2 to heat the oxalic acid water in the pots to 90°C. ④ Once the thermometer T2 of the front continuous melting pot 1 and the thermometer T4 of the rear continuous melting pot 2 show a temperature of 90℃, open the rosin valve F1; start the rosin conveyor 11, control the conveyor motor speed to achieve the required feeding speed; open the melting oil valve F2, control the valve opening to achieve the required flow rate of the melting oil; open the oxalic acid water valve F3, control the valve opening to achieve the required flow rate of the oxalic acid water. ⑤ Control the opening of steam valve F4 and steam valve F11 to keep the temperature displayed by thermometer T2 of the front continuous melting pot 1 between 85 and 90°C, and the temperature displayed by thermometer T4 of the rear continuous melting pot 2 between 92 and 97°C. ⑥ After observing that material is flowing out of the discharge pipe 15, open the return valve F6 and return valve F8, start the pipeline pump 24, and continuously supply melting oil to the bottom of the melting pot 1. The device begins to operate stably. ⑦ Calculate the sand removal cycle based on the sand content of the rosin and perform sand removal operations regularly; first open the reflux valve F7 to continuously supply melting oil to the bottom of the second melting pot, close the reflux valve F6, slowly open the slag discharge valve F5, observe the sand content in the drainage, and close the slag discharge valve F5 after the sand is completely discharged, open the reflux valve F6 to continue supplying melting oil to the bottom of the second melting pot, close the reflux valve F7, open the slag discharge valve F9, observe the sand content in the drainage, and close the slag discharge valve F9 after the sand is completely discharged.

[0033] like Figure 3 The second embodiment shown differs from the first embodiment in that the melting oil pipe 17 in the high-efficiency continuous melting device for rosin in the second embodiment is connected at its upper end to the upper part of the previous continuous melting pot 1, while the other structures are the same as in the first embodiment.

[0034] In this implementation plan, the melting step is as follows: ① Before starting the machine, confirm that all valves are closed and all instruments and equipment are operating normally; ② First, open the oxalic acid water valve F3 and inject sufficient oxalic acid water into the forward continuous melting pot. The oxalic acid water enters the backward continuous melting pot 3 through the connecting pipe 14. At the same time, open the cleaning valve F10. After water overflows from the cleaning pipe 16, close the oxalic acid water valve F3 and the cleaning valve F10. ③ Open steam valves F4 and F11 to introduce steam into the forward continuous melting pot 1 and the rear continuous melting pot 2 to heat the oxalic acid water in the pots to 90°C. ④ Once the thermometer T2 of the front continuous melting pot 1 and the thermometer T4 of the rear continuous melting pot 2 show a temperature of 90℃, open the rosin valve F1; start the rosin conveyor 11, control the conveyor motor speed to achieve the required feeding speed; open the melting oil valve F2, control the valve opening to achieve the required flow rate of the melting oil; open the oxalic acid water valve F3, control the valve opening to achieve the required flow rate of the oxalic acid water. ⑤ Control the opening of steam valve F4 and steam valve F11 to keep the temperature displayed by thermometer T2 of the front continuous melting pot 1 between 85 and 90°C, and the temperature displayed by thermometer T4 of the rear continuous melting pot 2 between 92 and 97°C. ⑥ After observing that material is flowing out of the discharge pipe 15, open the reflux valve F6 and reflux valve F8 to continuously supply melting oil to the bottom of the melting pot 1, start the pipeline pump 24, and the device begins to operate stably. ⑦ Calculate the sand removal cycle based on the sand content of the rosin and perform sand removal operations regularly; first open the reflux valve F7 to continuously supply melting oil to the bottom of the melting pot 2, close the reflux valve F6, slowly open the slag discharge valve F5, observe the sand content in the drainage, and close the slag discharge valve F5 after the sand and gravel have been removed. Then open the reflux valve F6, close the reflux valve F7, open the slag discharge valve F9, observe the sand content in the drainage, and close the slag discharge valve F9 after the sand and gravel have been removed.

[0035] like Figure 4 The third embodiment shown differs from the second embodiment in that it requires only one continuous melting pot 19. The side wall of the continuous melting pot 19 is connected to a melting oil pipe 20, which has reflux valves at both the top and bottom. The upper end of the melting oil pipe connects to the upper part of the continuous melting pot 19, and the upper oil inlet end is also connected to a pipeline pump 26. The lower end of the melting oil pipe extends into the continuous melting pot 19, located between the live steam coil 25 and the slag discharge port 21. The other structures of the continuous melting pot in this embodiment are the same as in the second embodiment.

[0036] like Figure 5The fourth embodiment shown includes a front continuous melting pot 1 and a rear continuous melting pot 2, a front melting oil pipe 22 and a rear melting oil pipe 23. The inlet and outlet ends of the front melting oil pipe 22 and the rear melting oil pipe 23 are equipped with reflux valves, and each melting oil pipe has a pipeline pump at its inlet end. The upper end of the front melting oil pipe 22 connects to the upper part of the front continuous melting pot 1, and the lower end of the front melting oil pipe extends into the front continuous melting pot 1, located between the live steam coil and the slag discharge port. The upper end of the rear melting oil pipe 23 connects to the upper part of the rear continuous melting pot 2, and the lower end of the melting oil pipe extends into the rear continuous melting pot, located between the live steam coil and the slag discharge port. The other structures of the front continuous melting pot 1 and the rear continuous melting pot 2 are the same as those in other embodiments.

[0037] This utility model can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A high-efficiency continuous melting device for rosin, comprising a continuous melting pot, wherein a steam pipe with a steam valve and a pressure gauge is provided at the lower part of the continuous melting pot, the steam pipe outlet being connected to a live steam coil located at the lower part of the continuous melting pot, and a slag discharge port with a slag discharge valve is provided at the bottom of the continuous melting pot, characterized in that: The continuous melting pot is connected to a melting oil pipe with a reflux valve on its side wall. The upper end of the melting oil pipe is connected to the upper part of the continuous melting pot, and the lower end of the melting oil pipe extends into the continuous melting pot and is located between the live steam coil and the slag discharge port.

2. The high-efficiency continuous rosin melting device according to claim 1, characterized in that: There are two continuous melting pots, namely a front continuous melting pot and a rear continuous melting pot. The front continuous melting pot is connected to a rosin transition tank via a pipeline. A rosin conveyor is provided between the front continuous melting pot and the pipeline. The pipeline is also connected to an oil pipe with a melting oil valve and a flow meter, and a water pipe with an oxalic acid water valve and a flow meter. The front continuous melting pot and the rear continuous melting pot are connected by a connecting pipe. The rear continuous melting pot is equipped with a discharge pipe with a valve at the top, which is connected to a filter device. A cleaning pipe with a cleaning valve is installed below the discharge pipe inlet of the rear continuous melting pot. A pipeline pump is connected to the input end of the melting oil pipe.

3. The high-efficiency continuous rosin melting device according to claim 2, characterized in that: The upper end of the melting oil pipe is connected to the upper part of the front continuous melting pot, and the lower end is connected to the branch pipe with the reflux valve at both ends. The two ends of the branch pipe extend into the front continuous melting pot at the position between the live steam coil and the slag discharge port, and into the rear continuous melting pot at the position between the live steam coil and the slag discharge port, respectively.

4. The high-efficiency continuous resin melting device according to claim 2, characterized in that: The upper end of the melting oil pipe is connected to the upper part of the subsequent continuous melting pot, and the lower end is connected to a branch pipe with a reflux valve at both ends. The two ends of the branch pipe extend into the position between the live steam coil and the slag discharge port in the front continuous melting pot and the position between the live steam coil and the slag discharge port in the subsequent continuous melting pot, respectively.

5. The high-efficiency continuous rosin melting device according to claim 3 or 4, characterized in that: The end of the connecting pipe that extends into the subsequent continuous melting pot extends to the lower middle part of the subsequent continuous melting pot.

6. The high-efficiency continuous rosin melting device according to claim 2, characterized in that: There are two melting oil pipes. The upper end of one melting oil pipe is connected to the upper part of the front continuous melting pot, and the lower end of the melting oil pipe extends into the front continuous melting pot, located between the live steam coil and the slag discharge port. The upper end of the other melting oil pipe is connected to the upper part of the rear continuous melting pot, and the lower end of the melting oil pipe extends into the rear continuous melting pot, located between the live steam coil and the slag discharge port. Each melting oil pipe is equipped with a pipeline pump.

7. The efficient continuous melting device for rosin according to claim 2, 3, 4, or 6, characterized in that: The thermometers are respectively installed on the bodies of the front continuous melting pot and the rear continuous melting pot.

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