Uniform heating type bamboo salt kiln

Abstract

The utility model discloses a kind of uniform heating type bamboo salt kiln, it is related to bamboo salt production and processing equipment technical field, including bamboo salt kiln shell, the right side of the bamboo salt kiln shell is provided with waste heat recovery mechanism, the bamboo salt kiln shell is opened with heating cabin, pine placement cabin, the heating cabin is located above pine placement cabin, the inner wall bottom of pine placement cabin is slidably installed with sliding drawer, the inner wall bottom of the heating cabin is opened with through-hole to the inner chamber of pine placement cabin left and right sides. The utility model is rotated by setting the bamboo salt placement mechanism, including by servo motor driven turntable, multilayer fixed ring and boom, and on each layer fixed ring is set up and can be rotated by driven gear and fixed gear meshing bamboo salt placement cylinder, bamboo salt placement cylinder can revolve around a fixed point and also can rotate, so that each bamboo tube can evenly accept the heat of both sides heating rod, avoid the problem of unilateral heating uneven, significantly improve the heating uniformity of bamboo salt and finished product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of bamboo salt production and processing equipment, specifically to a uniformly heated bamboo salt kiln. Background Technology

[0002] Bamboo salt is a traditional health food made by filling sun-dried salt into bamboo tubes, sealing them with loess, and then calcining them at high temperatures in a specific kiln. Its preparation process usually requires multiple high-temperature heat treatments (such as three calcinations and nine roastings). The core equipment in this process is the bamboo salt kiln, and the performance of the kiln directly determines the final quality, color, mineral content, and taste of the bamboo salt. At present, the traditional bamboo salt kilns commonly used in the industry are mostly simple brick structures or fixed metal kilns. Their heating methods usually adopt bottom heating or single-sided heating. In practical applications, this traditional heating structure and method have gradually revealed many technical defects, which seriously restrict the improvement of bamboo salt quality and the standardization of production.

[0003] Chinese patent document CN220380283U discloses a uniformly heated bamboo salt firing device, including a main kiln body, a filter, a bamboo tube placement rack, and a moving cart. The main kiln body is divided into a top and a bottom. A grid is set between the top and bottom of the main kiln body, and a support is set on the top of the grid inside the main kiln body. Bamboo tube bodies are placed inside the bamboo tube placement rack, and multiple sets of bamboo tube bodies are arranged in the bamboo tube placement rack. The bamboo tube placement rack is made of metal. A ring heating coil is set inside the main kiln body, and the ring heating coil is wound around the outside of the bamboo tube placement rack. When the ring heating coil is activated, a vortex phenomenon is formed inside the ring heating coil, thereby continuously heating the bamboo tube placement rack, resulting in fast heating speed and uniform heating of each bamboo tube body. At the same time, temperature control is convenient, avoiding the uneven heating of bamboo salt at the top and bottom caused by traditional devices that use pine wood for heating. The following problems exist with the existing technology: Although the aforementioned literature describes a method of heating bamboo tubes by designing a ring-shaped heating coil around the bamboo tube holder, the bamboo tube holder itself cannot be moved, and the bamboo tubes placed on it always face the heating coil with only one side. This results in the heating effect being less effective on the side of the bamboo tubes away from the heating coil than on the side closer to the heating coil, making it difficult to ensure that all the salt particles inside the bamboo tubes are heated evenly. At the same time, although the exhaust gas can be purified, the gas itself is at a high temperature, and direct exhaust will result in the waste of residual heat. Utility Model Content

[0004] This utility model provides a uniformly heated bamboo salt kiln to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A uniformly heated bamboo salt kiln includes a bamboo salt kiln shell. A waste heat recovery mechanism is provided on the right side of the bamboo salt kiln shell. The bamboo salt kiln shell has a heating chamber and a pine wood placement chamber. The heating chamber is located above the pine wood placement chamber. A sliding drawer is slidably installed on the bottom of the inner wall of the pine wood placement chamber. Through holes penetrating to the inner cavity of the pine wood placement chamber are opened on both the left and right sides of the bottom of the inner wall of the heating chamber. Several heating rods are fixedly installed on both the left and right sides of the inner wall of the heating chamber. A servo motor is fixedly installed on the top of the bamboo salt kiln shell. The output shaft of the servo motor passes through the inner cavity of the heating chamber and is provided with a bamboo salt placement mechanism. The bamboo salt placement mechanism includes a turntable. The top of the turntable is fixedly connected to the output shaft of the servo motor. Three layers of fixing rings are provided at the bottom of the turntable. Several hanging rods are fixedly installed in a circular array on the top of each of the three fixing rings. Several hanging rods on the top of the uppermost fixing ring are fixedly connected to the bottom of the turntable. Several hanging rods in the lower two layers are fixedly installed between two adjacent fixing rings.

[0006] A further improvement of this utility model is that: the heating chamber and the pine wood placement chamber are both hinged to the front of the inner cavity with a first sealing door, and the outer wall of the bamboo salt kiln shell is fixedly bonded with a first heat insulation cotton.

[0007] A further improvement of this utility model is that: a number of driven gears are movably mounted in a circular array on the top of the three fixed rings, the number of driven gears are located between two adjacent rods, a bamboo salt placement cylinder is provided at the bottom of each of the driven gears, and a fixing rod is provided on the inner ring of the three fixed rings, the bottom of the fixing rod is fixedly installed on the bottom of the inner wall of the heating chamber.

[0008] A further improvement of this utility model is that: a cross-shaped groove is provided at the top center of each of the driven gears; a cross-shaped block is fixedly installed at the bottom of each of the bamboo salt placement cylinders; the cross-shaped block engages with the cross-shaped groove; and three fixed gears are uniformly fixedly installed on the outer wall of the fixing rod; the three fixed gears mesh with a number of driven gears at the top of the three fixing rings respectively.

[0009] A further improvement of this utility model's technical solution is that: the waste heat recovery mechanism includes a preheating box and an exhaust fan. The preheating box is fixedly installed on the right side of the bamboo salt kiln shell, and the exhaust fan is fixedly installed at the bottom of the bamboo salt kiln shell. The input end of the exhaust fan extends into the inner cavity of the heating chamber, and the output end of the exhaust fan is fixedly connected to a diversion box. S-shaped stainless steel pipes are fixedly connected to the bottom left, right, and rear sides of the diversion box. The bent portions of the three S-shaped stainless steel pipes are all located in the inner cavity of the preheating box, and the bottom ends of the three S-shaped stainless steel pipes extend to the bottom of the preheating box and are fixedly connected to a collection box. A bamboo salt placement rack is fixedly installed on the bottom of the inner wall of the preheating box. A second sealing door is hinged to the front side of the inner cavity of the preheating box, and a second insulation cotton is fixedly bonded to the outer wall of the preheating box.

[0010] A further improvement of this utility model is that: a gas supply pipe is fixedly connected to the bottom of the collection box, and a purification box is fixedly connected to the other end of the gas supply pipe; a PP filter element and an activated carbon filter element are provided in the inner cavity of the purification box; and an exhaust pipe is fixedly connected to the right side of the purification box.

[0011] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: This utility model provides a uniformly heated bamboo salt kiln. By setting a rotatable bamboo salt placement mechanism, including a turntable driven by a servo motor, multiple layers of fixed rings and hanging rods, and a bamboo salt placement cylinder on each layer of fixed rings that can rotate by meshing with a driven gear and a fixed gear, the bamboo salt placement cylinder can both revolve and rotate, so that each bamboo cylinder can receive heat from the heating rods on both sides evenly, avoiding the problem of uneven heating on one side, and significantly improving the heating uniformity of bamboo salt and the quality of finished product.

[0012] This utility model provides a uniformly heated bamboo salt kiln. By setting up a waste heat recovery mechanism, including an exhaust fan, a diversion box, an S-shaped stainless steel pipe, and a preheating box, high-temperature waste gas is introduced into the preheating box to preheat the unheated bamboo tubes. The waste gas is finally discharged after being purified by PP filter and activated carbon filter in the purification box. This not only realizes the recovery and utilization of heat and reduces energy waste, but also reduces the pollution of waste gas to the environment through purification treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interior of the bamboo salt kiln shell of this utility model. Figure 3 This is a schematic diagram of the bamboo salt placement mechanism of this utility model. Figure 4 This is a schematic diagram of the driven gear and bamboo salt placement cylinder of this utility model; Figure 5 This is a schematic diagram of the waste heat recovery mechanism of this utility model.

[0014] In the diagram: 1. Bamboo salt kiln shell; 11. Heating chamber; 12. Pine wood storage chamber; 13. Sliding drawer; 14. Through hole; 15. Heating rod; 16. Servo motor; 17. Bamboo salt storage mechanism; 171. Turntable; 172. Hanging rod; 173. Fixing ring; 174. Driven gear; 1741. Cross-shaped slot; 175. Bamboo salt storage cylinder; 1751. Cross-shaped locking block; 176. Fixing rod; 1761. Fixing gear; 2. Waste heat recovery mechanism; 21. Preheating box; 22. Exhaust fan; 23. Diversion box; 24. S-shaped stainless steel pipe; 25. Bamboo salt storage rack; 26. Centralized box; 27. Gas supply pipe; 28. Purification box. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand Understood. The present invention will now be further described in conjunction with specific implementation methods.

[0016] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a uniformly heated bamboo salt kiln, including a bamboo salt kiln shell 1. A waste heat recovery mechanism 2 is provided on the right side of the bamboo salt kiln shell 1. The bamboo salt kiln shell 1 has a heating chamber 11 and a pine wood placement chamber 12. The heating chamber 11 is located above the pine wood placement chamber 12. A sliding drawer 13 is slidably installed on the bottom of the inner wall of the pine wood placement chamber 12. Through holes 14 penetrating into the inner cavity of the pine wood placement chamber 12 are opened on both the left and right sides of the bottom of the inner wall of the heating chamber 11. Several heating rods 15 are fixedly installed on both the left and right sides of the inner wall of the heating chamber 11. The temperature control system of the heating rods 15 is realized by linkage control of a PID temperature controller and a thermocouple. A servo motor 16 is fixedly installed on the top of the bamboo salt kiln shell 1. The output shaft of the servo motor 16 penetrates into the inner cavity of the heating chamber 11 and is provided with a bamboo salt placement mechanism 17. The bamboo salt placement mechanism 17 includes a turntable 171. The top of the turntable 171 is fixedly connected to the output shaft of the servo motor 16. The bottom is provided with three layers of fixing rings 173. Several hanging rods 172 are fixedly installed in a circular array on the top of each of the three fixing rings 173. Several hanging rods 172 on the top of the uppermost fixing ring 173 are fixedly connected to the bottom of the turntable 171. Several hanging rods 172 in the lower two layers are fixedly installed between two adjacent fixing rings 173. The front of the inner cavity of the heating chamber 11 and the pine wood placement chamber 12 are hinged with a first sealing door. The outer wall of the bamboo salt kiln shell 1 is fixedly bonded with a first heat insulation cotton. Several driven gears 174 are movably installed in a circular array on the top of each of the three fixing rings 173. Several driven gears 174 are located between two adjacent hanging rods 172. Bamboo salt placement cylinders 175 are provided at the bottom of each driven gear 174. The bamboo salt placement cylinders 175 are made of high-temperature resistant ceramic. The inner ring of the three fixing rings 173 is provided with a fixing rod 176. The bottom of the fixing rod 176 is fixedly installed at the bottom of the inner wall of the heating chamber 11. When in use, opening the first sealed door exposes the inner cavity of the heating chamber 11 and the pine wood placement chamber 12, allowing the sliding drawer 13 to be pulled out and pine wood placed inside. Simultaneously, the heating rods 15 on both sides of the inner cavity of the heating chamber 11 can be powered by an external power source to heat the bamboo salt placement mechanism 17. At the same time, the resin in the pine wood inside the sliding drawer 13 will be continuously released under the heating effect and will release various substances into the inner cavity of the heating chamber 11 through the through hole 14, allowing the substances to continuously react with the bamboo salt and reducing material waste.

[0017] like Figure 4As shown, a cross-shaped slot 1741 is provided at the top center of several driven gears 174, and a cross-shaped block 1751 is fixedly installed at the bottom of several bamboo salt placing cylinders 175. The cross-shaped block 1751 engages with the cross-shaped slot 1741, and the spring buckle can improve the stability of the engagement without affecting the removal. With the low speed of the servo motor 16, it can effectively prevent the bamboo salt placing cylinder 175 from falling off accidentally. Three fixed gears 1761 are evenly fixedly installed on the outer wall of the fixing rod 176. The three fixed gears 1761 mesh with several driven gears 174 at the top of the three fixing rings 173 respectively. Bamboo tubes can be placed inside several bamboo salt placement cylinders 175. After closing the first sealing door, the servo motor 16 is started, which drives the turntable 171 to rotate. The connection between the hanging rod 172 and the fixed ring 173 drives the bamboo tubes in the several bamboo salt placement cylinders 175 arranged in a ring to revolve, so as to heat them evenly. At the same time, while the fixed ring 173 revolves, the meshing of the driven gear 174 and the fixed gear 1761 on the outer wall of the fixed rod 176 drives the bamboo salt placement cylinder 175 to rotate. This allows the bamboo tubes in the several bamboo salt placement cylinders 175 to be heated evenly by the heating rods 15 on both sides. The bamboo tubes can be picked up and put down by the engagement of the cross-shaped locking block 1751 at the bottom of the bamboo salt placement cylinder 175 and the cross-shaped locking groove 1741 at the top of the driven gear 174, so that the bamboo tubes can be picked up or put down one by one.

[0018] like Figure 5As shown, the waste heat recovery mechanism 2 includes a preheating box 21 and an exhaust fan 22. The preheating box 21 is fixedly installed on the right side of the bamboo salt kiln shell 1, and the exhaust fan 22 is fixedly installed at the bottom of the bamboo salt kiln shell 1. The input end of the exhaust fan 22 extends into the inner cavity of the heating chamber 11. The heating chamber 11 has a one-way valve inlet. Gas can be drawn into its inner cavity through the one-way valve when the heating chamber 11 is under negative pressure. By selecting an exhaust fan 22 with appropriate power and air volume and using a frequency converter, the operator can adjust the power of the exhaust fan to match the exhaust volume with the air volume supplemented through the air inlet, thereby actively maintaining the negative pressure inside the furnace within a preset safe and efficient range. The output end of the exhaust fan 22 is fixedly connected to a diversion box 23. The bottom of the diversion box 23... S-shaped stainless steel pipes 24 are fixedly connected to the left, right and rear sides of the preheating box 21. The bent parts of the three S-shaped stainless steel pipes 24 are located in the inner cavity of the preheating box 21. The bottom ends of the three S-shaped stainless steel pipes 24 penetrate to the bottom of the preheating box 21 and are fixedly connected to the central box 26. A bamboo salt rack 25 is fixedly installed on the bottom of the inner wall of the preheating box 21. A second sealing door is hinged to the front of the inner cavity of the preheating box 21. A second heat insulation cotton is fixedly bonded to the outer wall of the preheating box 21. A gas supply pipe 27 is fixedly connected to the bottom of the central box 26. The other end of the gas supply pipe 27 is fixedly connected to the purification box 28. The inner cavity of the purification box 28 is equipped with a PP filter element and an activated carbon filter element. The purification box 28 is equipped with a detachable panel for replacing the filter element. An exhaust pipe is fixedly connected to the right side of the purification box 28. The high-temperature gas generated by heating the inner cavity of the heating chamber 11 can be discharged through the exhaust fan 22 and then enter the inner cavity of the diversion box 23. The diversion box 23 can discharge the high-temperature gas into its inner cavity by connecting with three S-shaped stainless steel pipes 24. Utilizing the thermal conductivity of stainless steel, the heat is dissipated in the inner cavity of the preheating box 21, so that unheated bamboo tubes can be placed on the bamboo salt rack 25 in advance. After closing the second sealing door, the bamboo salt rack 25 can be preheated, saving the time required for subsequent heating. At the same time, the gas can enter the inner cavity of the central box 26 after passing through the three S-shaped stainless steel pipes 24, and then be injected into the inner cavity of the purification box 28 through the gas supply pipe 27. After being discharged through the PP filter and activated carbon filter, harmful substances are avoided from polluting the environment. At the same time, the outer walls of the diversion box 23, the part of the three S-shaped stainless steel pipes 24 extending out of the top of the preheating box 21, and the output end of the exhaust fan 22 are all wrapped with third insulation cotton to prevent heat loss when entering the inner cavity of the preheating box 21 through the S-shaped stainless steel pipes 24.

[0019] The working principle of this uniformly heated bamboo salt kiln will be explained in detail below.

[0020] like Figure 1-5As shown, during use, opening the first sealed door exposes the inner cavities of the heating chamber 11 and the pine wood placement chamber 12, allowing the sliding drawer 13 to be pulled out and pine wood placed inside. Simultaneously, the heating rods 15 on both sides of the inner cavity of the heating chamber 11 are powered by an external power source, heating the bamboo salt placement mechanism 17. At the same time, the resin in the pine wood inside the sliding drawer 13 is continuously released under the heating effect and releases various substances into the inner cavity of the heating chamber 11 through the through-hole 14, allowing the substances to continuously react with the bamboo salt, reducing waste. Several bamboo salt placement cylinders 1 can be placed within the bamboo salt placement cylinders 1. Inside 75, after closing the first sealing door, the servo motor 16 is started, which drives the turntable 171 to rotate. Through the connection between the hanging rod 172 and the fixed ring 173, the bamboo tubes inside the several circularly arranged bamboo salt placement cylinders 175 revolve, achieving uniform heating. Simultaneously, as the fixed ring 173 revolves, the meshing of the driven gear 174 and the fixed gear 1761 on the outer wall of the fixed rod 176 drives the bamboo salt placement cylinders 175 to rotate, ensuring that the bamboo tubes inside the several bamboo salt placement cylinders 175 receive uniform heating from the heating rods 15 on both sides. This allows for the simultaneous loading and unloading of the bamboo tubes. The bamboo salt placement tubes can be easily picked up or placed one by one by engaging the cross-shaped locking block 1751 at the bottom of the bamboo salt placement tube 175 with the cross-shaped locking groove 1741 at the top of the driven gear 174. Simultaneously, the high-temperature gas generated by heating the inner cavity of the heating chamber 11 can be discharged through the exhaust fan 22 and then enter the inner cavity of the distribution box 23. The distribution box 23, connected to three S-shaped stainless steel pipes 24, can discharge the high-temperature gas into its inner cavity. Utilizing the thermal conductivity of stainless steel, the heat is dissipated within the preheating box 21, allowing unheated bamboo tubes to be placed on the bamboo salt placement rack 25 beforehand. After closing the second sealing door, the bamboo salt rack 25 can be preheated, saving the time required for subsequent heating. At the same time, the gas enters the inner cavity of the central box 26 after passing through the three S-shaped stainless steel pipes 24, and is injected into the inner cavity of the purification box 28 through the gas supply pipe 27. After passing through the PP filter and activated carbon filter, the gas is discharged to avoid harmful substances polluting the environment. Meanwhile, the outer wall of the diversion box 23, the part of the three S-shaped stainless steel pipes 24 extending out of the top of the preheating box 21, and the output end of the exhaust fan 22 are all wrapped with third insulation cotton to prevent heat loss when entering the inner cavity of the preheating box 21 through the S-shaped stainless steel pipes 24.

[0021] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A uniformly heated bamboo salt kiln, comprising a bamboo salt kiln shell (1), characterized in that: A waste heat recovery mechanism (2) is provided on the right side of the bamboo salt kiln shell (1). The bamboo salt kiln shell (1) has a heating chamber (11) and a pine wood placement chamber (12). The heating chamber (11) is located above the pine wood placement chamber (12). A sliding drawer (13) is slidably installed on the bottom of the inner wall of the pine wood placement chamber (12). Through holes (14) penetrating into the inner cavity of the pine wood placement chamber (12) are opened on both the left and right sides of the bottom of the inner wall of the heating chamber (11). Several heating rods (15) are fixedly installed on both the left and right sides of the inner wall of the heating chamber (11). A servo motor (16) is fixedly installed on the top of the bamboo salt kiln shell (1). The output shaft of the servo motor (16) passes through the inner cavity of the heating chamber (11) and is provided with a bamboo salt placement mechanism (17). The bamboo salt placement mechanism (17) includes a turntable (171). The top of the turntable (171) is fixedly connected to the output shaft of the servo motor (16). The bottom of the turntable (171) is provided with three layers of fixing rings (173). Several hanging rods (172) are fixedly installed in a circular array on the top of each of the three fixing rings (173). Several hanging rods (172) on the top of the uppermost fixing ring (173) are fixedly connected to the bottom of the turntable (171). Several hanging rods (172) on the lower two layers are fixedly installed between two adjacent fixing rings (173).

2. The uniformly heated bamboo salt kiln according to claim 1, characterized in that: The heating chamber (11) and the pine wood placement chamber (12) are both hinged to the front of the inner cavity and are provided with a first sealing door. The outer wall of the bamboo salt kiln shell (1) is fixedly bonded with a first heat insulation cotton.

3. The uniformly heated bamboo salt kiln according to claim 1, characterized in that: The top of each of the three fixed rings (173) is movably mounted with a number of driven gears (174) in a circular array. The number of driven gears (174) are located between two adjacent pairs of several hanging rods (172). Bamboo salt placement tubes (175) are provided at the bottom of each of the driven gears (174). A fixing rod (176) is provided on the inner ring of the three fixed rings (173). The bottom of the fixing rod (176) is fixedly installed on the bottom of the inner wall of the heating chamber (11).

4. The uniformly heated bamboo salt kiln according to claim 3, characterized in that: A cross-shaped slot (1741) is provided at the top center of each of the driven gears (174), and a cross-shaped block (1751) is fixedly installed at the bottom of each of the bamboo salt placement cylinders (175). The cross-shaped block (1751) engages with the cross-shaped slot (1741). Three fixed gears (1761) are evenly fixedly installed on the outer wall of the fixed rod (176), and the three fixed gears (1761) mesh with a number of driven gears (174) at the top of the three fixed rings (173).

5. A uniformly heated bamboo salt kiln according to claim 1, characterized in that: The waste heat recovery mechanism (2) includes a preheating box (21) and an exhaust fan (22). The preheating box (21) is fixedly installed on the right side of the bamboo salt kiln shell (1). The exhaust fan (22) is fixedly installed at the bottom of the bamboo salt kiln shell (1), and the input end of the exhaust fan (22) extends into the inner cavity of the heating chamber (11). The output end of the exhaust fan (22) is fixedly connected to a diversion box (23). The bottom left, right and rear sides of the diversion box (23) are all fixedly connected to S The three S-shaped stainless steel tubes (24) have their curved portions located in the inner cavity of the preheating box (21). The bottom ends of the three S-shaped stainless steel tubes (24) extend to the bottom of the preheating box (21) and are fixedly connected to a central box (26). A bamboo salt rack (25) is fixedly installed on the bottom of the inner wall of the preheating box (21). A second sealing door is hinged to the front side of the inner cavity of the preheating box (21). A second heat insulation cotton is fixedly bonded to the outer wall of the preheating box (21).

6. A uniformly heated bamboo salt kiln according to claim 5, characterized in that: The bottom of the central box (26) is fixedly connected to a gas supply pipe (27), and the other end of the gas supply pipe (27) is fixedly connected to a purification box (28). The inner cavity of the purification box (28) is provided with a PP filter element and an activated carbon filter element, and the right side of the purification box (28) is fixedly connected to an exhaust pipe.

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