Intelligent kiln for bamboo salt production and preparation method thereof

Abstract

The invention discloses an intelligent kiln for bamboo salt manufacturing and a manufacturing method of the intelligent kiln, relates to the technical field of bamboo salt energy-saving combustion control, and aims to solve the problems that the bamboo salt manufacturing effect is poor due to inaccurate temperature control, and heat is lost and wasted due to too high heat. The controller controls the air supply mechanism to supply air with different logics at different time periods according to the real-time temperature, and the bamboo salt is subjected to automatic control calcination in five stages of drying, heating fusion, stable fusion, bamboo decomposition and carbonization, so that the traditional Chinese medicine, the bamboo, the salt and the pine can be uniformly fused finally; by means of intelligent temperature control and precise stage regulation and control, the effect of calcining the bamboo salt every time is improved, energy waste caused by too high temperature can be avoided through precise temperature control and a buried kiln body, and meanwhile heat generated by flue gas can be recycled.

Description

Technical Field

[0001] The invention relates to the technical field of bamboo salt energy-saving combustion control, and in particular to an intelligent kiln for making bamboo salt and a preparation method thereof. Background Art

[0002] Bamboo salt kilns are mostly round or oval in shape, with the outer shell made of refractory bricks or mud and the interior lined with high temperature resistant materials. There are adjustable vents at the bottom to control the air volume, and exhaust ports at the top to discharge exhaust gas. Pine wood is used as fuel, and there is a special fuel placement area inside that is connected to the main calcination area.

[0003] However, the above-mentioned kiln is a traditional kiln. When burning bamboo salt, the temperature control is entirely done manually, which easily leads to inaccurate control and affects the quality of bamboo salt. The prior art publication number CN110108123B discloses a kiln temperature-pressure decoupling control method, device, equipment and system, which relates to the field of engineering control technology. The method comprises the following steps: receiving the temperature T(c) and pressure P(c) at the zero pressure surface; wherein the zero pressure surface is located at the beginning of the kiln body firing zone; partially decoupling the temperature control loop and the pressure control loop of the kiln; obtaining the decoupled temperature control quantity T(c) and pressure control quantity P(s) and converting them into the blast furnace valve opening and smoke exhaust fan speed output respectively. The present invention adopts partial decoupling measures to locate the zero-pressure surface at the end of the preheating zone, thereby greatly reducing the temperature fluctuation in the kiln, improving the control accuracy of the temperature and pressure in the firing zone of the kiln body, and ensuring the quality of the product. However, it is unable to skillfully control the different temperature requirements at different time periods in the bamboo salt production process. It only monitors the temperature more accurately but cannot control it, which ultimately leads to poor bamboo salt production effect and excessive heat loss and waste.

[0004] Therefore, there is a need for an intelligent kiln for making bamboo salt and a preparation method thereof. Summary of the invention

[0005] In order to solve all or part of the above problems, the purpose of the present invention is to provide an intelligent kiln for making bamboo salt and a preparation method thereof, so as to solve the problem that inaccurate temperature control leads to poor bamboo salt production effect and excessive heat is lost and wasted.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent kiln for making bamboo salt, comprising a kiln body and a loading frame installed at the upper end of the kiln body, a bamboo tube placement mechanism is inserted into the inner side of the kiln body, an intelligent control box is also installed at the upper end of the kiln body, a smoke exhaust mechanism and an air supply mechanism are respectively installed on the intelligent control box, the smoke exhaust mechanism and the air supply mechanism are both installed on the control box and controlled by a controller arranged on one side of the intelligent control box, a temperature sensor is installed on the inner wall of the kiln body, and the temperature sensor is electrically connected to the controller;

[0007] The output end of the air supply mechanism is arranged on the inner side of the kiln body, the input end of the air supply mechanism is connected with the air blower, and the air blower is controlled by the controller, the air supply mechanism comprises an air supply pipe and an air outlet plate installed at the output end of the air supply pipe, and the air supply pipe is installed in the inner wall cavity of the kiln body;

[0008] Bamboo salt burns inside the kiln. The temperature is detected by a temperature sensor and transmitted to the controller in real time. The controller controls the air supply mechanism to supply air with different logics at different times according to the real-time temperature, and automatically controls the calcination of bamboo salt in five stages: drying - heating fusion - stable fusion - bamboo decomposition - carbonization.

[0009] Furthermore, a plurality of pine wood combustion chambers are provided on the inner side of the kiln body, and a bamboo salt combustion chamber is provided on the inner side of the kiln body between each group of adjacent pine wood combustion chambers. After the bamboo tube placement mechanism is inserted into the inner side of the kiln body, the bamboo tube is located on the inner side of the bamboo salt combustion chamber. The pine wood combustion chamber and the bamboo salt combustion chamber are connected via a through hole provided on the kiln body, and a temperature sensor is installed on the inner wall of the kiln body located in the bamboo salt combustion chamber, and the temperature sensor is electrically connected to the controller.

[0010] Furthermore, the drying stage controller decision logic is as follows:

[0011] The first-gear ventilation mode of the blower is turned on, and air is supplied to the kiln body through the air supply pipe through the air outlet plate. The temperature of the bamboo salt combustion chamber is detected in real time by the temperature sensor, and the temperature of the bamboo salt combustion chamber is raised to 90°C. When the temperature of the bamboo salt combustion chamber is ≧90°C, the first-gear ventilation mode of the blower is turned off, and at the same time, it is determined whether the combustion time is ≧1.5h. If it is <1.5h, the temperature monitoring and judgment of ≧90°C will be carried out again. If it is ≧1.5h, it will enter the temperature rise and fusion stage.

[0012] Furthermore, the controller decision logic of the heating and fusion stage is as follows:

[0013] The pine wood is stacked horizontally in the feeding frame, and then the heat insulation mechanism moves back and forth. When the outlet of the feeding frame is connected with the inlet of the pine wood burning chamber, the horizontal pine wood automatically rolls into the pine wood burning chamber, and then the wood is added once and the second-gear ventilation mode is turned on at the same time. When the temperature of the bamboo salt burning chamber is between 100-200°C, it is determined whether it is ≧1h. If it is <1h, the temperature is monitored and determined again. At the same time, when the temperature is not between 100-200°C, it is also necessary to determine whether it is >200°C or ≦ 100℃, if >200℃, turn on the first-speed ventilation mode, and re-monitor and judge the temperature. If ≦100℃, turn on the third-speed ventilation mode, and re-monitor and judge the temperature. If ≧1h, turn on the third-speed ventilation mode, and judge the temperature range of 200-300℃. The temperature range of 200-300℃ is 1.5h, and so on. The judgment logic is the same as the judgment between 100-200℃. When ≧1.5h, it enters the stable fusion stage.

[0014] Furthermore, the controller decision logic in the stable fusion stage is as follows:

[0015] Add wood for the second time and turn on the fourth-speed ventilation mode. When the temperature of the bamboo salt combustion chamber is between 300-350℃, determine whether it is ≧1h. If it is <1h, re-monitor and judge the temperature. At the same time, when the temperature is not between 300-350℃, it is also necessary to determine whether it is >350℃ or ≦300℃. If it is >350℃, turn on the third-speed ventilation mode, and re-monitor and judge the temperature. If it is ≦300℃, turn on the fifth-speed ventilation mode, and re-monitor and judge the temperature. If it is ≧1h, turn on the fifth-speed ventilation mode, and judge the temperature range of 350-400℃. The temperature range of 350-400℃ is 1h, and so on. After the judgment of the temperature range of 350-400℃ is completed, the sixth-speed ventilation mode is turned on to judge the temperature range of 400-450℃. The temperature range of 400-450℃ stage is 1h. After the judgment of the temperature range of 400-450℃ is completed, the seventh-speed ventilation mode is turned on to judge the temperature range of 450-500℃. The temperature range of 450-500℃ stage is 1h. After the judgment of the temperature range of 450-500℃ is completed, the eighth-speed ventilation mode is turned on to judge the temperature range of 500-550℃. The temperature range of 500-550℃ stage is 1h. After the judgment of the temperature range of 500-550℃ is completed, the bamboo decomposition stage is entered.

[0016] Furthermore, the controller decision logic of the bamboo decomposition stage is as follows:

[0017] Add wood three times and turn on the nine-speed ventilation mode. When the temperature of the bamboo salt combustion chamber is between 550-600℃, judge whether it is ≧2h. If it is <2h, re-monitor and judge the temperature. At the same time, when the temperature is not between 550-600℃, it is also necessary to judge whether it is >600℃ or ≦550℃. If it is >600℃, turn on the eight-speed ventilation mode, and re-monitor and judge the temperature. If it is ≦550℃, turn on the ten-speed ventilation mode, and re-monitor and judge the temperature. If it is ≧2h, turn on the ten-speed ventilation mode, and judge the temperature range of 600-650℃. The temperature range of 600-650℃ stage is 2h. By analogy, after the judgment of the temperature range of 600-650℃ is completed, turn on the eleventh-speed ventilation mode, and judge the temperature range of 650-700℃. The temperature range of 650-700℃ stage is 2h. After the judgment of the temperature range of 650-700℃ is completed, enter the carbonization completion stage.

[0018] Furthermore, the controller decision logic for the carbonization completion stage is as follows:

[0019] Add wood four times and turn on the 12th gear ventilation mode. When the temperature of the bamboo salt combustion chamber is between 700-730℃, determine whether it is ≧1h. If it is <1h, re-monitor and judge the temperature. At the same time, when the temperature is not between 700-730℃, it is also necessary to determine whether it is >730℃ or ≦700℃. If it is >730℃, turn on the 11th gear ventilation mode and re-monitor and judge the temperature. If it is ≦700℃, turn on the 13th gear ventilation mode and re-monitor and judge the temperature. The purpose is to keep the temperature always Keep it between 700-730℃. If it is ≧1h, turn on the thirteenth-speed ventilation mode, and judge the temperature range of 730-760℃. The temperature range of 730-760℃ stage is 1h. And so on. After the temperature range of 730-760℃ is judged, turn on the fourteenth-speed ventilation mode, and judge the temperature range of 760-790℃. The temperature range of 760-790℃ stage is 1h. After the temperature range of 760-790℃ is judged, carry out the salt-steaming treatment, and finally the bamboo salt is baked.

[0020] Furthermore, the bamboo tube placing mechanism includes a support plate and a bamboo tube placing rack installed on one side of the support plate. A plurality of bamboo tube placing racks are provided and are arranged in a basket-type structure. A detachable baffle frame is provided at the end of the bamboo tube placing rack. At the same time, a movable wheel is provided at the lower end of each bamboo tube placing rack. The bamboo tube placing rack matches the bamboo salt combustion bin, and when the bamboo tube placing rack is inserted into the bamboo salt combustion bin, the support plate and the kiln body form an enclosed combustion space, and the movable wheel is located at the lower inner end of the kiln body.

[0021] Furthermore, the heat insulation mechanism includes a heat insulation board and a through hole opened on the heat insulation board. An electric telescopic rod is installed at one end of the heat insulation board. The heat insulation board movably passes through the loading frame. A plurality of wood storage grooves are opened on the inner side of the loading frame. The wood storage grooves correspond to the pine wood burning bin. A plurality of stacked pine woods are horizontally stored in the wood storage grooves.

[0022] Furthermore, another technical solution proposed by the present invention is to provide a method for preparing bamboo salt using an intelligent kiln, comprising the following steps:

[0023] S1: Put the well-proportioned light bamboo leaves, dried ginger, licorice, chicken's gizzard lining and water into a large pot and boil the soup. Boil the soup for 3-5 hours, stirring it during boiling. After boiling and cooling, add the original salt and stir to blend.

[0024] S2: After the mixture is mixed, it is poured into a bamboo tube, which is then sealed with wormwood and covered with yellow mud;

[0025] S3: vertically stack the bamboo tubes on the bamboo tube placement mechanism. After the bamboo tubes are completely stacked, the bamboo tube placement mechanism is pushed and inserted into the inner side of the kiln body. The bamboo tube placement mechanism and the kiln body form a closed combustion space.

[0026] S4: Pine wood is thrown into the kiln and ignited, and then the bamboo salt is calcined in five stages: drying - heating fusion - stable fusion - bamboo decomposition - carbonization. The total calcination time is 18 hours;

[0027] S5: After calcination is completed, the bamboo tube placement mechanism is not removed from the kiln body, and the operation of sealing the bamboo salt is carried out, and finally the first baking of the bamboo salt is completed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention proposes an intelligent kiln for making bamboo salt and a preparation method thereof. The high temperature of pine wood combustion enters from both sides of the kiln body. At the same time, bamboo tubes are arranged in two rows at most, so that the flames almost completely cover the bamboo tubes, and it is convenient to accurately control the temperature. The bamboo salt burns inside the kiln body, and the temperature is detected by a temperature sensor and transmitted to the controller in real time. The controller controls the air supply mechanism to supply air with different logics at different time periods according to the real-time temperature, and the bamboo salt is automatically calcined in five stages of drying-heating fusion-stable fusion-bamboo decomposition-carbonization, so that Chinese medicine, bamboo, salt and pine wood can be evenly fused. At the same time, the best bamboo salt production is achieved by using intelligent temperature control and accurate stage regulation, which not only improves the effect of each calcination of the bamboo salt, but also avoids energy waste caused by excessive temperature due to accurate temperature control and the underground kiln body. At the same time, the heat generated by the flue gas can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall installation three-dimensional structure of the intelligent kiln for making bamboo salt of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall preliminary disassembly of the three-dimensional structure of the intelligent kiln for making bamboo salt of the present invention;

[0032] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the kiln body, the loading frame and the heat insulation mechanism of the intelligent kiln for making bamboo salt of the present invention;

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the air supply mechanism of the intelligent kiln for making bamboo salt of the present invention;

[0034] Figure 5 The invention is based on the intelligent kiln for making bamboo salt Figure 2 Schematic diagram of further decomposition of the three-dimensional structure;

[0035] Figure 6 It is a schematic diagram of the three-dimensional structure of the bamboo tube placement mechanism of the intelligent kiln for making bamboo salt of the present invention;

[0036] Figure 7 The drying phase logic diagram of the intelligent kiln for making bamboo salt of the present invention;

[0037] Figure 8 This is a logic diagram of the temperature rise and fusion stage of the intelligent kiln for making bamboo salt of the present invention;

[0038] Fig. 9 It is a logic diagram of the stable fusion stage of the intelligent kiln for making bamboo salt of the present invention;

[0039] Fig.10 A logic diagram of bamboo decomposition stages of the intelligent kiln for making bamboo salt of the present invention;

[0040] Fig.11 This is a logic diagram of the carbonization completion stage of the intelligent kiln for making bamboo salt of the present invention.

[0041] In the figure:

[0042] 1. Kiln body; 11. Pine wood combustion chamber; 12. Bamboo salt combustion chamber; 2. Bamboo tube placement mechanism; 21. Support plate; 22. Bamboo tube placement rack; 23. Baffle rack; 24. Moving wheel; 3. Loading frame; 31. Wood storage trough; 4. Heat insulation mechanism; 41. Heat insulation board; 42. Through hole; 43. Electric telescopic rod; 5. Intelligent control chassis; 51. Controller; 6. Smoke exhaust mechanism; 61. Exhaust plate; 7. Air supply mechanism; 71. Air supply pipe; 72. Air outlet plate; 8. Cooling coil. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1-Figure 2 As shown, an intelligent kiln for making bamboo salt comprises a kiln body 1 and a loading frame 3 installed at the upper end of the kiln body 1. The kiln body 1 is arranged below the ground and the upper end surface of the kiln body 1 is flush with the ground. The ground can be used to reduce the heat loss outside the kiln body 1 and facilitate the loading of pine wood from top to bottom. A bamboo tube placement mechanism 2 is inserted into the inner side of the kiln body 1. The bamboo tube placement mechanism 2 is supported by the ground, and a groove is provided on the ground for facilitating the up and down transportation of the bamboo tube placement mechanism 2, and an inclined slope is arranged between the groove and the ground surface. A heat insulation mechanism 4 installed on the ground is arranged between the kiln body 1 and the loading frame 3, and the heat insulation mechanism 4 can close or open the loading port of the kiln body 1.

[0045] An intelligent control box 5 is also installed at the upper end of the kiln body 1 , on which a smoke exhaust mechanism 6 and an air supply mechanism 7 are respectively installed. The smoke exhaust mechanism 6 and the air supply mechanism 7 are both installed on the control box 5 and controlled by a controller 51 set on one side of the intelligent control box 5 .

[0046] like Figure 2-Figure 3 As shown, a plurality of pinewood burning bins 11 are provided on the inner side of the kiln body 1, and bamboo salt burning bins 12 are provided on the inner side of the kiln body 1 between each group of adjacent pinewood burning bins 11. After the bamboo tube placement mechanism 2 is inserted into the inner side of the kiln body 1, the bamboo tube is located on the inner side of the bamboo salt burning bin 12. The pinewood burning bin 11 is connected to the bamboo salt burning bin 12 through a through hole provided on the kiln body 1, and a temperature sensor is installed on the inner wall of the kiln body 1 located at the bamboo salt burning bin 12. The temperature sensor is electrically connected to the controller 51, and the temperature sensor adopts a high temperature resistant sensor, preferably a thermocouple temperature sensor.

[0047] like Figure 4 As shown, the output end of the air supply mechanism 7 is arranged on the inner side of the kiln body 1, the input end of the air supply mechanism 7 is connected to the air blower, and the air blower is controlled by the controller 51, the air supply mechanism 7 includes an air supply pipe 71 and an air outlet plate 72 installed at the output end of the air supply pipe 71, the air supply pipe 71 is installed in the inner wall cavity of the kiln body 1, and a plurality of air outlet plates 72 are provided, preferably two are provided, such as Figure 4 As shown, two air outlet plates 72 are installed inside the pine wood burning chamber 11 and divide the pine wood burning chamber 11 into three chambers.

[0048] Specifically, when calcining bamboo salt, after the bamboo tube placement mechanism 2 is inserted into the inner side of the kiln body 1, a small amount of pine wood is preferentially placed in the pine wood combustion chamber 11 and ignited. It is recommended to use long pine wood and insert it into the pine wood combustion chamber 11 at an angle. On the premise of putting in a small amount of pine wood, the upper and lower lengths of the pine wood are increased, thereby improving the combustion uniformity. The entrance of the pine wood combustion chamber 11 is closed through the heat insulation mechanism 4, and the blower is started through the controller 51 to start the first ventilation mode, starting the first step in the bamboo salt manufacturing process: the drying stage. The drying stage usually takes about 1.5 hours, and the temperature is controlled at 80-100°C. This process mainly removes moisture from the surface of the bamboo tube, salt and Chinese medicine mixture, and preliminary sufficient drying is required. Please refer to Figure 7 The specific process of the drying stage is as follows: During the drying process, the temperature of the bamboo salt combustion chamber 12 is detected in real time through a temperature sensor, and the temperature of the bamboo salt combustion chamber 12 is raised to 90°C in priority. This temperature is convenient for drying and regulation regardless of whether it is high or low. When the temperature of the bamboo salt combustion chamber 12 is ≧90°C, the first-gear ventilation mode is closed, and at the same time, it is determined whether the burning time is ≧1.5h. If it is <1.5h, the temperature monitoring and judgment of ≧90°C are repeated. If it is ≧1.5h, the temperature will enter the heating and fusion stage;

[0049] The heating and fusion stage takes about 2.5 hours, and the temperature is controlled at 100-300℃. In this temperature range, the water evaporates further, the volatile components of the Chinese medicine begin to fuse with the salt, and the salt begins to absorb the minerals and trace elements in the bamboo and Chinese medicine. As the temperature rises, the chemical reaction speeds up. However, since it involves the physical and chemical changes of multiple substances, such as the volatilization of Chinese medicine components and the moisture absorption of salt, the temperature cannot rise too fast. The heating rate is controlled at about 80℃ per hour. Please refer to Figure 8 The specific process of the heating and fusion stage is as follows: by stacking the pine wood horizontally in the feeding frame 3 first, and then the heat insulation mechanism 4 moves back and forth, when the outlet of the feeding frame 3 is connected with the inlet of the pine wood burning bin 11, the horizontal pine wood automatically rolls into the pine wood burning bin 11, and then the wood is added once and the second-gear ventilation mode is turned on at the same time. When the temperature of the bamboo salt burning bin 12 is between 100-200℃, it is determined whether it is ≧1h. If it is <1h, the temperature is monitored and determined again. At the same time, when the temperature is not between 100-200℃, it is also necessary to determine whether it is >200℃ or ≦1 00℃, if it is >200℃, turn on the first-gear ventilation mode, and re-monitor and judge the temperature. If it is ≦100℃, turn on the third-gear ventilation mode, and re-monitor and judge the temperature. The purpose is to keep the temperature between 100-200℃. If it is ≧1h, turn on the third-gear ventilation mode, and judge the temperature range of 200-300℃. The temperature range of 200-300℃ is 1.5h, and so on. The judgment logic is the same as the judgment between 100-200℃, which will not be repeated here. When it is ≧1.5h, it enters the stable fusion stage;

[0050] The stable fusion stage takes about 5 hours, and the temperature is controlled at 300-550℃, because this is the critical period for the full fusion of Chinese medicine and bamboo salt. Most of the organic components of Chinese medicine undergo complex chemical reactions such as decomposition and transformation within this temperature range, and the cellulose and hemicellulose in the bamboo also begin to decompose, releasing minerals and other components to fuse with the salt. At this stage, the temperature needs to be kept relatively stable. Please refer to Fig. 9, the heating speed is generally controlled at about 50℃ per hour to ensure that various ingredients can fully react and fuse. The specific process of the stable fusion stage is as follows: add wood for the second time and turn on the fourth-speed ventilation mode. When the temperature of the bamboo salt combustion chamber 12 is between 300-350℃, judge whether it is ≧1h. If it is <1h, re-monitor and judge the temperature. At the same time, when the temperature is not between 300-350℃, it is also necessary to judge whether it is >350℃ or ≦300℃. If it is >350℃, turn on the third-speed ventilation mode, and re-monitor and judge the temperature. If it is ≦300℃, turn on the fifth-speed ventilation mode, and re-monitor and judge the temperature. The purpose is to keep the temperature between 300-350℃ at all times. If it is ≧1h, turn on the fifth-speed ventilation mode, and perform temperature monitoring and judgment in the temperature range 3. After the judgment of the temperature range of 50-400℃ is completed, the temperature range of 350-400℃ is 1h, and so on. After the judgment of the temperature range of 350-400℃ is completed, the sixth-speed ventilation mode is turned on to judge the temperature range of 400-450℃. The temperature range of 400-450℃ is 1h. After the judgment of the temperature range of 400-450℃ is completed, the seventh-speed ventilation mode is turned on to judge the temperature range of 450-500℃. The temperature range of 450-500℃ is 1h. After the judgment of the temperature range of 450-500℃ is completed, the eighth-speed ventilation mode is turned on to judge the temperature range of 500-550℃. The temperature range of 500-550℃ is 1h. After the judgment of the temperature range of 500-550℃ is completed, the bamboo decomposition stage is entered;

[0051] The bamboo decomposition stage takes 6 hours, and the temperature is controlled at 550-700℃. The organic matter in the bamboo is accelerated to decompose and carbonize. Considering the uniformity of the bamboo carbonization process and avoiding local overheating, the heating rate is generally controlled at about 50℃ every 2 hours. Please refer to Fig.10 The specific process of bamboo decomposition stage is as follows: add wood three times and turn on the nine-speed ventilation mode. When the temperature of the bamboo salt combustion chamber 12 is between 550-600℃, judge whether it is ≧2h. If it is <2h, re-monitor and judge the temperature. At the same time, when the temperature is not between 550-600℃, it is also necessary to judge whether it is >600℃ or ≦550℃. If it is >600℃, turn on the eight-speed ventilation mode and re-monitor and judge the temperature. If it is ≦550℃, turn on the ten-speed ventilation mode and re-monitor and judge the temperature. The purpose is to keep the temperature between 550-600℃. If it is ≧2h, the tenth-gear ventilation mode is turned on to judge the temperature range of 600-650℃. The temperature range of 600-650℃ is 2h. Similarly, after the judgment of the temperature range of 600-650℃ is completed, the eleventh-gear ventilation mode is turned on to judge the temperature range of 650-700℃. The temperature range of 650-700℃ is 2h. After the judgment of the temperature range of 650-700℃ is completed, the carbonization completion stage is entered;

[0052] The carbonization stage takes 3 hours, and the temperature is controlled at 700-790℃. The bamboo has basically completed the carbonization process, and most of the organic components have been converted into inorganic carbon and other substances, which are closely combined with the salt. This stage is a further refined fusion process. At this time, the heating rate can be adjusted according to the actual situation, generally 30℃ per hour, until the desired final temperature and state are reached. Please refer to Fig.11 The specific process of the carbonization completion stage is as follows: add wood four times and turn on the 12th gear ventilation mode. When the temperature of the bamboo salt combustion chamber 12 is between 700-730℃, judge whether it is ≧1h. If it is <1h, re-monitor and judge the temperature. At the same time, when the temperature is not between 700-730℃, it is also necessary to judge whether it is >730℃ or ≦700℃. If it is >730℃, turn on the 11th gear ventilation mode, and re-monitor and judge the temperature. If it is ≦700℃, turn on the 13th gear ventilation mode, and re-monitor and judge the temperature. The purpose is to keep the temperature between 700-730℃ at all times. If it is ≧1h, the thirteenth-speed ventilation mode will be turned on to judge the temperature range of 730-760℃. The temperature range of 730-760℃ stage is 1h, and so on. After the judgment of the temperature range of 730-760℃ is completed, the fourteenth-speed ventilation mode will be turned on to judge the temperature range of 760-790℃. The temperature range of 760-790℃ stage is 1h. After the judgment of the temperature range of 760-790℃ is completed, the salt treatment is carried out, and finally the bamboo salt is baked.

[0053] See also Figure 5-Figure 6The bamboo tube placement mechanism 2 includes a support plate 21 and a bamboo tube placement rack 22 installed on one side of the support plate 21. A plurality of bamboo tube placement racks 22 are provided and are arranged in a basket frame structure, which is convenient for vertically placing bamboo tubes and each bamboo tube placement rack 22 is provided with at most two rows of bamboo tubes along the narrowness direction, and the height direction can be freely placed according to the bamboo salt output. A freely detachable baffle 23 is provided at the end of the bamboo tube placement rack 22. When placing the bamboo tube, the baffle 23 is disassembled for easy placement, and when calcining, the baffle 23 is closed for easy blocking and movement. At the same time, a moving wheel 24 is provided at the lower end of each bamboo tube placement rack 22. The bamboo tube placement rack 22 matches the bamboo salt combustion bin 12, and when the bamboo tube placement rack 22 is inserted into the bamboo salt combustion bin 12, The support plate 21 and the kiln body 1 form a closed combustion space, and the moving wheel 24 is located at the lower end of the inner side of the kiln body 1. When the bamboo tube placement mechanism 2 moves away, the pine wood combustion chamber 11 is exposed, which is convenient for taking out the pine wood ash. The bamboo tube placement rack 22 is designed to match the bamboo salt combustion chamber 12. The high temperature of pine wood combustion enters from both sides of the bamboo salt combustion chamber 12. At the same time, bamboo tubes are arranged in two rows at most, so that the flame almost completely covers the bamboo tubes, and it is convenient to accurately control the temperature, so that Chinese medicine, bamboo, salt and pine wood can be evenly integrated. At the same time, intelligent temperature control and precise stage control are used to achieve the best bamboo salt production, which not only avoids the trouble and inaccuracy of manual operation, but also improves the effect of each calcination of bamboo salt.

[0054] See also Figure 5 The heat insulation mechanism 4 includes a heat insulation board 41 and a through hole 42 provided on the heat insulation board 41. An electric telescopic rod 43 is installed at one end of the heat insulation board 41. The heat insulation board 41 movably penetrates the feeding frame 3. A plurality of wood storage grooves 31 are provided on the inner side of the feeding frame 3. The wood storage grooves 31 correspond to the pine wood burning bin 11. A plurality of stacked pine woods are horizontally stored in the wood storage grooves 31. When wood needs to be added, the controller 51 starts the electric telescopic rod 43 to make the heat insulation board 41 reciprocate. When the through hole 42 corresponds to the opening of the pine wood burning bin 11, the pine wood falls to the inner side of the pine wood burning bin 11. At the same time, the reciprocating movement of the heat insulation board 41 can prevent the pine wood in the wood storage groove 31 from getting stuck, thereby ensuring that each pine wood burning bin 11 is evenly added with wood each time, and avoiding the inaccuracy and insecurity of manual wood addition.

[0055] See also Figure 5A cooling coil 8 is arranged on the inner side of the kiln body 1 at the upper inner side of the bamboo salt combustion chamber 12, and cooling water is introduced into the inner side of the cooling coil 8. A water pump is arranged at the input end of the cooling coil 8, and the output end of the cooling coil 8 can be transported to places where hot water is needed in the factory or employee dormitory. At the same time, an exhaust plate 61 is also arranged on the upper side of the cooling coil 8. The upper side of the exhaust plate 61 is connected with the cavity surrounded by the kiln body 1 and the input end of the smoke exhaust mechanism 6. The smoke exhaust mechanism 6 can be a fan, and a plurality of small fans can also be arranged on the exhaust plate 61 to facilitate directional smoke exhaust. The smoke exhaust mechanism 6 slowly exhausts the air on the inner side of the bamboo salt combustion chamber 12, so that the combustion smoke inside the bamboo salt combustion chamber 12 passes through the cooling coil 8 and is cooled by the cold water heat exchange inside it, which is convenient for heat recovery. Then, it is extracted by the smoke exhaust mechanism 6 and transported to the smoke treatment equipment for centralized treatment, and then discharged after meeting the emission standards.

[0056] See also Figure 1-Figure 2 Another technical solution proposed by the present invention is to provide a method for preparing bamboo salt using an intelligent kiln, comprising the following steps:

[0057] Step 1: Material preparation: According to the ratio of one ton of natural powdered lake salt, prepare 8 kg of light bamboo leaves, 4 kg of dried ginger, 2 kg of licorice, 1 kg of chicken's gizzard lining and 200 kg of water. Put the light bamboo leaves, dried ginger, licorice, chicken's gizzard lining and water into a large pot to boil the soup. Boil the soup for 4 hours, stirring it during the boiling process. After the boiling is completed and cooled, add the raw salt and stir to blend;

[0058] Step 2: After the mixture is mixed, pour it into a fresh bamboo tube, seal it with wormwood and apply yellow mud;

[0059] Step 3: vertically stack the bamboo tubes on the bamboo tube placement mechanism 2. After the bamboo tubes are completely stacked, push the bamboo tube placement mechanism 2 and insert it into the inner side of the kiln body 1. A detachable connection structure is provided between the bamboo tube placement mechanism 2 and the kiln body 1 to facilitate the sealed connection between the bamboo tube placement mechanism 2 and the kiln body 1.

[0060] Step 4: Place a small amount of pine wood in the pine wood combustion chamber 11 and ignite it, and then perform five stages of calcination of bamboo salt, namely, drying, heating and fusion, stable fusion, bamboo decomposition and carbonization. The total calcination time is 18 hours.

[0061] Step 5: After the calcination is completed, the bamboo tube placement mechanism 2 is not taken out to keep the bamboo salt for a period of time, thus completing the first roasting of the bamboo salt;

[0062] Step 6: Repeat the above steps 2 to 5 nine times to complete the nine-roasting of bamboo salt, which is nine-roasted bamboo salt.

[0063] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent kiln for making bamboo salt, comprising a kiln body (1) and a loading frame (3) installed at the upper end of the kiln body (1), a bamboo tube placement mechanism (2) is inserted into the inner side of the kiln body (1), characterized in that: An intelligent control box (5) is also installed at the upper end of the kiln body (1), and a smoke exhaust mechanism (6) and an air supply mechanism (7) are respectively installed on the intelligent control box (5). The smoke exhaust mechanism (6) and the air supply mechanism (7) are both installed on the control box (5) and controlled by a controller (51) arranged on one side of the intelligent control box (5). A temperature sensor is installed on the inner wall of the kiln body (1), and the temperature sensor is electrically connected to the controller (51); The output end of the air supply mechanism (7) is arranged on the inner side of the kiln body (1); the input end of the air supply mechanism (7) is connected to the air blower, and the air blower is controlled by the controller (51); the air supply mechanism (7) comprises an air supply pipe (71) and an air outlet plate (72) installed at the output end of the air supply pipe (71); the air supply pipe (71) is installed in the inner wall cavity of the kiln body (1); The bamboo salt burns inside the kiln body (1), and the temperature is detected by a temperature sensor and transmitted to the controller (51) in real time. The controller (51) controls the air supply mechanism (7) to supply air with different logics at different time periods according to the real-time temperature, so as to automatically control the calcination of the bamboo salt in five stages: drying - heating fusion - stable fusion - bamboo decomposition - carbonization.

2. The intelligent kiln for making bamboo salt according to claim 1, characterized in that: A plurality of pine wood combustion chambers (11) are provided on the inner side of the kiln body (1), and a bamboo salt combustion chamber (12) is provided on the inner side of the kiln body (1) between each group of adjacent pine wood combustion chambers (11). After the bamboo tube placement mechanism (2) is inserted into the inner side of the kiln body (1), the bamboo tube is located on the inner side of the bamboo salt combustion chamber (12). The pine wood combustion chamber (11) and the bamboo salt combustion chamber (12) are connected via a through hole provided on the kiln body (1), and a temperature sensor is installed on the inner wall of the kiln body (1) located in the bamboo salt combustion chamber (12), and the temperature sensor is electrically connected to the controller (51).

3. The intelligent kiln for making bamboo salt according to claim 1, characterized in that: The decision logic of the drying stage controller (51) is as follows: The first ventilation mode of the blower is turned on, and air is supplied to the kiln body (1) through the air supply pipe (71) and the air outlet plate (72). The temperature of the bamboo salt combustion chamber (12) is detected in real time by the temperature sensor, and the temperature of the bamboo salt combustion chamber (12) is raised to 90°C. When the temperature of the bamboo salt combustion chamber (12) is ≧90°C, the first ventilation mode of the blower is turned off, and at the same time, it is determined whether the combustion time is ≧1.5h. If it is <1.5h, the temperature monitoring and judgment of ≧90°C are repeated. If it is ≧1.5h, the temperature rise and fusion stage will be entered.

4. The intelligent kiln for making bamboo salt as claimed in claim 3, characterized in that: The decision logic of the temperature rise fusion stage controller (51) is as follows: The pine wood is stacked horizontally in the loading frame (3), and then the heat insulation mechanism (4) moves back and forth. When the outlet of the loading frame (3) is connected with the inlet of the pine wood burning chamber (11), the horizontal pine wood automatically rolls into the pine wood burning chamber (11), and then wood is added once and the second-gear ventilation mode is turned on at the same time. When the temperature of the bamboo salt burning chamber (12) is between 100-200° C., it is determined whether it is ≧1h. If it is less than 1h, the temperature is monitored and determined again. At the same time, when the temperature is not between 100-200° C., it is also necessary to Determine whether it is >200℃ or ≤100℃. If >200℃, turn on the first-speed ventilation mode, and re-monitor and judge the temperature. If ≤100℃, turn on the third-speed ventilation mode, and re-monitor and judge the temperature. If ≧1h, turn on the third-speed ventilation mode, and judge the temperature range of 200-300℃. The temperature range of 200-300℃ is 1.5h, and so on. The judgment logic is the same as the judgment between 100-200℃. When ≧1.5h, enter the stable fusion stage.

5. The intelligent kiln for making bamboo salt as claimed in claim 4, characterized in that: The decision logic of the stable fusion stage controller (51) is as follows: Add wood for the second time and start the fourth-gear ventilation mode. When the temperature of the bamboo salt combustion chamber (12) is between 300-350°C, determine whether it is ≧1h. If it is <1h, re-monitor and determine the temperature. At the same time, when the temperature is not between 300-350°C, it is also necessary to determine whether it is >350°C or ≦300°C. If it is >350°C, start the third-gear ventilation mode and re-monitor and determine the temperature. If it is ≦300°C, start the fifth-gear ventilation mode and re-monitor and determine the temperature. If it is ≧1h, start the fifth-gear ventilation mode and determine the temperature range of 350-400°C. The temperature range of 350-400°C is 1h, and so on. After the judgment of the temperature range of 350-400℃ is completed, the sixth-speed ventilation mode is turned on to judge the temperature range of 400-450℃. The temperature range of 400-450℃ stage is 1h. After the judgment of the temperature range of 400-450℃ is completed, the seventh-speed ventilation mode is turned on to judge the temperature range of 450-500℃. The temperature range of 450-500℃ stage is 1h. After the judgment of the temperature range of 450-500℃ is completed, the eighth-speed ventilation mode is turned on to judge the temperature range of 500-550℃. The temperature range of 500-550℃ stage is 1h. After the judgment of the temperature range of 500-550℃ is completed, the bamboo decomposition stage is entered.

6. The intelligent kiln for making bamboo salt as claimed in claim 5, characterized in that: The decision logic of the bamboo decomposition stage controller (51) is as follows: Add wood three times and start the nine-speed ventilation mode. When the temperature of the bamboo salt combustion chamber (12) is between 550-600°C, determine whether it is ≧2h. If it is <2h, re-monitor and determine the temperature. At the same time, when the temperature is not between 550-600°C, determine whether it is >600°C or ≦550°C. If it is >600°C, start the eight-speed ventilation mode and re-monitor and determine the temperature. If it is ≦550°C, start the ten-speed ventilation mode and re-monitor and determine the temperature. Temperature monitoring and judgment, if ≧2h, the tenth-level ventilation mode is turned on, and the temperature range is 600-650℃. The temperature range 600-650℃ stage is 2h, and so on. After the temperature range 600-650℃ is judged, the eleventh-level ventilation mode is turned on, and the temperature range 650-700℃ is judged. The temperature range 650-700℃ stage is 2h. After the temperature range 650-700℃ is judged, the carbonization completion stage is entered.

7. The intelligent kiln for making bamboo salt as claimed in claim 6, characterized in that: The decision logic of the carbonization completion stage controller (51) is as follows: Add wood four times and start the 12th gear ventilation mode. When the temperature of the bamboo salt combustion chamber (12) is between 700-730°C, determine whether it is ≧1h. If it is <1h, re-monitor and determine the temperature. At the same time, when the temperature is not between 700-730°C, it is also necessary to determine whether it is >730°C or ≦700°C. If it is >730°C, start the 11th gear ventilation mode and re-monitor and determine the temperature. If it is ≦700°C, start the 13th gear ventilation mode and re-monitor and determine the temperature. The purpose is to make the temperature Always keep it between 700-730℃. If it is ≧1h, turn on the thirteenth-speed ventilation mode, and judge the temperature range of 730-760℃. The temperature range of 730-760℃ stage is 1h. And so on. After the temperature range of 730-760℃ is judged, turn on the fourteenth-speed ventilation mode, and judge the temperature range of 760-790℃. The temperature range of 760-790℃ stage is 1h. After the temperature range of 760-790℃ is judged, carry out the salt-steaming treatment, and finally the bamboo salt is baked.

8. The intelligent kiln for making bamboo salt as claimed in claim 1, characterized in that: The bamboo tube placement mechanism (2) comprises a support plate (21) and a bamboo tube placement rack (22) installed on one side of the support plate (21). A plurality of bamboo tube placement racks (22) are provided and are arranged in a basket frame structure. A detachable retaining rack (23) is provided at the end of each bamboo tube placement rack (22). A moving wheel (24) is provided at the lower end of each bamboo tube placement rack (22). The bamboo tube placement rack (22) matches the bamboo salt combustion bin (12). When the bamboo tube placement rack (22) is inserted into the bamboo salt combustion bin (12), the support plate (21) and the kiln body (1) form a closed combustion space. The moving wheel (24) is located at the lower end of the inner side of the kiln body (1).

9. The intelligent kiln for making bamboo salt according to claim 1, characterized in that: The heat insulation mechanism (4) comprises a heat insulation board (41) and a through hole (42) provided on the heat insulation board (41); an electric telescopic rod (43) is installed at one end of the heat insulation board (41); the heat insulation board (41) movably passes through the loading frame (3); a plurality of wood storage grooves (31) are provided inside the loading frame (3); the wood storage grooves (31) correspond to the pine wood combustion chamber (11); a plurality of stacked pine woods are horizontally stored in the wood storage grooves (31).

10. A method for preparing bamboo salt, using the intelligent kiln for making bamboo salt as claimed in claim 7, characterized in that: The steps include: S1: Put the well-proportioned light bamboo leaves, dried ginger, licorice, chicken's gizzard lining and water into a large pot and boil the soup. Boil the soup for 3-5 hours, stirring it during boiling. After boiling and cooling, add the original salt and stir to blend. S2: After the mixture is mixed, it is poured into a bamboo tube, which is then sealed with wormwood and covered with yellow mud; S3: vertically stacking the bamboo tubes on the bamboo tube placement mechanism (2); after the bamboo tubes are completely stacked, pushing the bamboo tube placement mechanism (2) and inserting it into the inner side of the kiln body (1); the bamboo tube placement mechanism (2) and the kiln body (1) form a closed combustion space; S4: Pine wood is thrown into the kiln body (1) and ignited, and then the bamboo salt is calcined in five stages: drying - heating and fusion - stable fusion - bamboo decomposition - carbonization. The total calcination time is 18 hours; S5: After the calcination is completed, the bamboo tube placement mechanism (2) is not taken out from the kiln body (1), and the operation of sealing the bamboo salt is carried out, and finally the first baking of the bamboo salt is completed.

Images