A rapid preparation system and method for refined purple bamboo salt

Abstract

The present invention belongs to the technical field of food processing equipment and preparation methods, and particularly relates to a rapid preparation system and method for refined purple bamboo salt. The system of the present invention includes a kiln furnace, a refining tank furnace and a pusher. The kiln furnace is a tunnel kiln furnace, and the tunnel kiln furnace and the refining tank furnace are connected by a track. A salt-carrying trolley is arranged on the track. Another track parallel to the track inside the tunnel kiln furnace is also arranged outside the tunnel kiln furnace. The two parallel tracks are respectively connected with a battery rail-changing vehicle at both ends, and the pusher is connected to the track at the entrance end of the tunnel kiln furnace. The present invention can rapidly prepare purple bamboo salt, greatly shorten the preparation time and process, improve the production volume and product quality, and reduce the labor intensity of operators. The output can fully meet the existing market demand. Long-term consumption can enable the human body to supplement trace elements such as selenium, and has benefits such as blood purification, detoxification, improvement of body fluid circulation and enhancement of immune function. It is suitable for extensive promotion and application and has a good market application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of food processing equipment and preparation methods, and particularly relates to a rapid preparation system and method for refined purple bamboo salt. Background Art

[0002] Modern science has proved that purple bamboo salt contains trace elements beneficial to the human body such as selenium. Coupled with the penetrability of salt itself, taking purple bamboo salt can bring benefits such as blood purification, detoxification, improvement of body fluid circulation, and enhancement of immune function.

[0003] The current commonly used production process of purple bamboo salt is as follows:

[0004] First, sea salt is stuffed into bamboo tubes, sealed with thin yellow mud, loaded into a chamber kiln, and heated with pine firewood to 800 degrees for baking. It takes 1 day for 1 baking, and 9 days for 9 bakings. On the 9th day of baking, rosin powder is sprayed into the kiln, the temperature of the kiln is raised to 1400 degrees, and the bamboo salt is melted into a salt slurry, which flows out of the kiln from the bamboo ash, pine ash, and yellow mud residue in the kiln. After cooling, it is transparent purple bamboo salt. During the flowing process, too many impurities are mixed in. The ancient baking process greatly limits the quality and output of purple bamboo salt.

[0005] The bamboo salt baking procedure of the existing chamber kiln is as follows:

[0006] Every morning, the furnace is loaded. Workers fill the kiln with bamboo tubes stuffed with sea salt. At noon, pine firewood is used to ignite and heat the furnace. When the furnace temperature rises to 800 degrees at night, baking starts for 1.5 hours. When the baking is completed, it is almost midnight, and the fire is extinguished to cool the furnace until the next morning when the furnace is cleared. In the morning of the next day, the workers clean out of the kiln the salt blocks that have been baked into grayish-white the previous night, and prepare to refill the kiln with salt-filled bamboo tubes again. This process needs to be repeated for 9 days, and only then a batch of bamboo salt will be baked through 9 cycles of the baking procedure, and then melted and cooled to become purple bamboo salt.

[0007] In summary, the existing technology for preparing purple bamboo salt requires a large amount of time. It takes 9 days to produce a batch of purple bamboo salt, which takes too long, and the production output is insufficient to meet the daily demand of people in the existing market. Therefore, improving the production process and production time of purple bamboo salt has become a new topic for continuous research and development by those skilled in the art. Summary of the Invention

[0008] In view of the deficiencies in the above-mentioned existing technology, the present invention provides a rapid preparation system and method for refined purple bamboo salt. Its purpose is to achieve the invention purpose of rapidly preparing purple bamboo salt, which can greatly shorten the preparation time, reduce the processes, reduce the labor intensity, and increase the production volume.

[0009] The technical solution adopted by the present invention to achieve the above object is as follows:

[0010] A rapid preparation system for refined purple bamboo salt, including a kiln, and also including a refining tank furnace and a pusher. The kiln is a tunnel kiln, and the tunnel kiln and the refining tank furnace are connected by a track. A salt-carrying trolley is provided on the track. Outside the tunnel kiln, there is another section of track parallel to the track inside the tunnel kiln. The two parallel tracks are respectively connected with a battery rail-changing vehicle at both ends. The pusher is connected to the track at the entrance end of the tunnel kiln.

[0011] In the middle of the ground inside the tunnel kiln, there is a maintenance trench for people. Tracks are laid on the ground on both sides of the trench. The tracks extend from the entrance of the tunnel kiln to the outside of the exit and even to the outside of the refining tank furnace. A pusher is provided on the track outside the entrance. The upper part of the tunnel kiln is provided with a vault, and the lower part is provided with two walls. The vault is arc-shaped and connected to the walls on both sides. Each inner side of the wall is provided with a raised fire-blocking line. Temperature measuring holes are provided on the walls. A dust settling chamber is connected to the outside of one side wall, and a combustion chamber is provided on the outside of the other side wall. The upper part of the dust settling chamber is connected with a chimney, and the chimney corresponds to the combustion chamber outside the tunnel kiln. A soot settling chamber is arranged below the chimney. Refractory doors are connected to the entrance and the exit respectively. The combustion chamber never stops firing, so that the temperature in the kiln is kept at a constant 800 degrees.

[0012] Inside the dust settling chamber, there is a brick masonry with a space and a vertical dust baffle. The dust settling chamber is connected to the exhaust gas outlet of the tunnel kiln. The cross-sectional area of the dust settling chamber is 10 times that of the exhaust gas outlet of the tunnel kiln. A dust cleaning hole is provided at the lower part of the dust settling chamber.

[0013] The refractory doors are connected to the entrance and the exit of the tunnel kiln. Channel steel door frames are respectively connected to the entrance and the exit. The refractory doors are connected to the door frames and move up and down in the channel steel door frames driven by a motor and a screw. Steel ropes are respectively connected to the upper corners on both sides of the refractory doors. The upper parts of the steel ropes are connected with fixed pulleys, and the fixed pulleys are connected to the door frames of the tunnel kiln. One end of the steel rope is connected to the refractory door, and counterweights are respectively connected to the middle parts of the steel ropes. The weight of the two counterweights is 15% less than the weight of the refractory door. The other ends of the steel ropes are connected to the steel rope winding and unwinding wheels arranged outside the tunnel kiln. The steel rope winding and unwinding wheels are connected to a worm gear reducer through a shaft. The worm gear reducer is connected to a DC motor B, a storage battery and a control switch. An elevator is also connected to the upper part of the tunnel kiln. The elevator is connected to an AC motor. The square-threaded screw on the elevator is connected to the refractory door to control the lifting of the refractory door.

[0014] There are multiple combustion chambers. The combustion chambers are horizontally arranged by a grate in the middle, dividing the inside of the combustion chamber into an upper and a lower grid structure. The upper part is the loose firewood combustion area, and the lower part is the primary air suction area. The steel bars of the grate are horizontally arranged. The secondary air heating air duct is arranged above the chord top of the combustion chamber.

[0015] The refining tank furnace body is rectangular, with four walls and a vault on top. The vault is connected to the four walls below. Temperature measuring holes are provided on both side walls of the refining tank furnace. An inlet is provided on the end face of the refining tank furnace adjacent to the tunnel kiln furnace, and a propane burner nozzle is provided above the inlet. An outlet for salt slurry is provided on the end face wall of the other end of the refining tank furnace, and a handicraft mold is provided at a position corresponding to the outside of the outlet for salt slurry, so that the salt slurry flows out directly into the handicraft mold. The inside of the chord arch of the refining tank furnace is divided into upper and lower layers.

[0016] A propane burner is connected to the propane burner nozzle. The propane burner is connected to a truss. The two side columns of the truss stand beside the inlet. The propane cylinder is placed outside the refining tank furnace workshop. The propane is connected to the propane burner through an iron pipe, and a regulating valve and a check valve are also provided on the iron pipe.

[0017] The salt-carrying trolley has a circle of guard plates connected to the upper part of the vehicle body, and a table board is connected to the upper part of the guard plates. Adjustable shims are respectively connected to the front and rear ends of the vehicle body. The lower part of the vehicle body is connected with malleable cast iron wheels. A through shaft A is provided in the middle of the malleable cast iron wheels. The through shaft A connects two parallel malleable cast iron wheels on it. The malleable cast iron wheels are installed on the through shaft A. The through shaft A cooperates with a copper bushing. The copper bushing is installed in a bushing seat, and the bushing seat is installed and connected to the lower part of the vehicle body. The vehicle body is made of thick stainless steel square pipes.

[0018] The table top of the salt-carrying trolley is cast with refractory cement, with the front being long and the rear being short. A table board is provided on the upper part of the table top, and refractory materials and heat insulation materials are wrapped under the table board.

[0019] The battery-powered rail-changing vehicle has a track connected to the upper part of the vehicle frame. The bottom of the vehicle frame is connected to a through shaft B through a copper bushing B. Two malleable cast iron wheels B are respectively connected to both ends of the through shaft B. A DC motor is also connected to the middle of the through shaft B. A battery is connected to the bottom of the vehicle frame.

[0020] The preparation method of a rapid preparation system for refining purple bamboo salt includes the following steps:

[0021] Step 1. Load sea salt into a bamboo basket in the salt loading area, seal the mouth of the bamboo basket with a yellow mud cover, and invert it on the table top of the salt-carrying trolley. The bamboo basket is a conical bamboo basket with a small bottom and a large mouth. The yellow mud cover is a low-temperature ceramic product made of selenium-rich yellow mud with one side flat and the other side provided with feet.

[0022] Step 2. Transport the salt-carrying trolley with the sea salt in the bamboo basket to the tunnel kiln furnace by the multi-position series baking method.

[0023] Step 3. Bake 9 times repeatedly to obtain semi-finished bamboo salt.

[0024] Step 4. Transport the semi-finished bamboo salt to the side of the refining pool furnace by the salt-carrying trolley, put it into the feeding port, and refine it into a salt slurry by melting with a high-temperature propane flame.

[0025] Step 5. Release the salt slurry from the refining pool furnace into a handicraft mold for cooling.

[0026] Step 6. Process the cooled large salt slurry into purple bamboo salt handicrafts, and crush the small salt into edible purple bamboo salt.

[0027] The repeated baking 9 times means baking the bamboo basket filled with salt in the tunnel kiln for 2 hours to form a salt column; then cooling the salt column after it comes out of the furnace, crushing it into loose salt, filling it into a new bamboo basket, sealing the mouth of the bamboo basket with a yellow mud cover, entering the tunnel kiln for baking for 2 hours to become a salt column again, then cooling the salt column after it comes out of the furnace, crushing it into loose salt, filling it into a new bamboo basket, sealing the mouth of the bamboo basket with a yellow mud cover, and sending it into the tunnel kiln for baking. Repeat this baking process 9 times to obtain the semi-finished bamboo salt of purple bamboo salt.

[0028] The multi-position serial baking method refers to a method in which multiple positions are set in the tunnel kiln, the salt-carrying trolleys are numbered, and they enter the tunnel kiln for baking in sequence and in series through the track in a circulating manner.

[0029] The edible purple bamboo salt is in the form of granular of different mesh numbers and is divided into the following four types:

[0030] No. 1: 5 - 80 mesh; No. 2: 80 - 120 mesh; No. 3: 120 - 150 mesh; No. 4: 150 - 200 mesh.

[0031] The handicrafts include geometric bodies.

[0032] The handicrafts include playthings, ornaments or pendants.

[0033] The handicrafts include reliefs.

[0034] The present invention has the following beneficial effects and advantages:

[0035] The present invention provides a rapid preparation system and method for refining purple bamboo salt. This preparation system can rapidly prepare purple bamboo salt, eliminating the procedures of furnace cleaning, furnace loading, temperature rising and baking, and flameout and cooling in the traditional process, greatly shortening the preparation time and processes, increasing the production volume, reducing the labor intensity of workers, and the output can fully meet the existing market demand.

[0036] The traditional process is further improved, and refined purple bamboo salt is produced quickly and efficiently. Moreover, the product quality of the refined purple bamboo salt has been significantly improved, and there are no any mixed impurities in it. Long-term consumption can enable people to supplement trace elements beneficial to the human body such as selenium, and has the benefits of blood purification, detoxification, improvement of body fluid circulation and enhancement of immune function, etc. It is suitable for extensive promotion and application and will have a good market application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] For the convenience of those of ordinary skill in the art to understand and implement the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments. However, it should be understood that the protection scope of the present invention is not limited by the drawings and specific embodiments.

[0038] Figure 1 Schematic diagram of the device structure and process flow of the present invention;

[0039] Figure 2 Schematic diagram of the internal structure of the combustion chamber in the present invention;

[0040] Figure 3 Schematic diagram of the structure of the salt-carrying trolley in the present invention;

[0041] Figure 4 Schematic diagram of the structure of the battery-powered rail-changing vehicle in the present invention;

[0042] Figure 5 Schematic diagram of the structure of the yellow mud cover in the present invention;

[0043] Figure 6 Schematic diagram of the structure of another embodiment of the yellow mud cover in the present invention;

[0044] Figure 7 Schematic diagram of the structure of the refining pool furnace in the present invention;

[0045] Figure 8 Schematic diagram of the installation structure of the refining pool furnace and the propane pipeline in the present invention;

[0046] Figure 9 Schematic diagram of the structure of the refractory door in the present invention;

[0047] Figure 10 Schematic diagram of the internal structure of the tunnel kiln furnace in the present invention;

[0048] Figure 11 Schematic diagram of the structure of the dust settling chamber in the present invention;

[0049] Figure 12 Schematic diagram of the structure of the bamboo basket in the present invention;

[0050] Figure 13 Schematic diagram of the structure of another embodiment of the bamboo basket in the present invention.

[0051] In the figure: salt loading area 1, salt-carrying trolley 2, track A 3, battery-powered rail-changing vehicle 4, entrance 5, refractory door 6, pusher 7, tunnel kiln furnace 8, combustion chamber 9, exit 10, cleaning area 11, crusher 12, refining pond furnace 13, feeding port 14, propane burner port 15, salt slurry outlet 16, handicraft mold 17, chimney 18, dust settling chamber 19, temperature measuring hole 20, furnace grate 21, pine fire combustion area 22, primary air suction area 23, secondary air heating air duct 24, table board 25, guard plate 26, vehicle body 27, adjustable shim 28, malleable cast iron wheel 29, industrial furnace slag 30, copper bushing 31, through shaft A 32, track B 33, vehicle frame 34, through shaft B 35, malleable cast iron wheel B 36, DC motor A 37, battery 38, copper bushing B 39, indication receiver 40, remote controller 41, yellow mud cover 42, support leg 43, propane torch 44, truss 45, steel pipe 46, regulating valve 47, check valve 48, propane cylinder 49, exhaust pipe 50, door frame 51, lifter 52, AC motor 53, square-threaded screw 54, worm gear reducer 55, steel rope winding and unwinding wheel 56, DC motor B 57, storage battery 58, control switch 59, steel rope 60, fixed pulley 61, counterweight iron 62, inner side of wall 63, fire blocking line 64, temperature measuring hole 65, manhole 66, concrete 67, waste gas outlet 68, cross-sectional area of waste gas passing through the dust settling chamber 69, dust baffle 70, ash cleaning hole 71, first-layer chord arch 72, second-layer chord arch 73, chimney of refining pond furnace 74, salt slurry 75, bamboo basket 76. Detailed implementation mode

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] Embodiment 1

[0054] The present invention is a rapid preparation system for refining purple bamboo salt, as Figure 1 shown, Figure 1 is a schematic diagram of the device structure and process flow of the present invention. It includes a tunnel kiln furnace 8, a refining pond furnace 13 and a pusher 7. Among them: the tunnel kiln furnace 8 and the refining pond furnace 13 are connected by track A 3. Another track parallel to the track inside the tunnel kiln furnace 8 is also provided outside the tunnel kiln furnace 8. Battery-powered rail-changing vehicles 4 are respectively connected to the two parallel tracks. The pusher 7 is connected to the track at the entrance end of the tunnel kiln furnace 8.

[0055] As Figure 10 shown, Figure 10 is a schematic diagram of the internal structure of the tunnel kiln furnace in the present invention.

[0056] The track inside the tunnel kiln 8 extends from the entrance 5 to outside the exit 10 and extends to the outside of the refining bath furnace 13. The tunnel kiln 8 is like a straight tunnel with an arch roof and two side walls built below. The arch roof is arc-shaped and seats on the inner sides 63 of the two side walls. There is a raised fire-stop line on each of the inner sides of the two side walls. Temperature measuring holes 20 are provided on both walls. One side wall of the tunnel kiln 8 is connected to a dust settling chamber 19. A chimney 18 is connected to the upper part of the dust settling chamber 19. The chimney 18 corresponds to the combustion chamber 9 outside the tunnel kiln 8. The soot settling chamber is located below the chimney 18. The ground inside the tunnel kiln is made of concrete 67. A long maintenance trench 66 is provided in the middle of the concrete 67 ground. Light rails are laid on both sides of the trench leading to the entrance 5 and the exit 10 at both ends. Fire-resistant doors 6 are connected to the entrance and the exit respectively.

[0057] As Figure 11 shown, Figure 11 It is a schematic structural diagram of the dust settling chamber in the present invention. The function of the dust settling chamber 19 is to prevent soot particles from being discharged into the atmosphere. There is a brick masonry with a certain space inside the dust settling chamber 19. A vertical dust baffle 70 is provided in the middle of the dust settling chamber 19 from top to bottom, dividing the dust settling chamber into two inner and outer spaces. The inner space part of the dust settling chamber 19 is connected to the exhaust gas outlet 68 of the tunnel kiln. The height of the dust baffle 70 accounts for about one-third of the height of the dust settling chamber 19. The remaining two-thirds of the space is the cross-sectional area 69 for the exhaust gas to pass through the dust settling chamber. The cross-sectional area 69 for the exhaust gas to pass through the dust settling chamber is 10 times the cross-sectional area of the exhaust gas outlet 68 of the tunnel kiln. An ash cleaning hole 71 with an opening is provided at the lower part of the wall of the outer space part inside the dust settling chamber 19, which is convenient for the staff to remove the dust inside.

[0058] The working principle of the dust settling chamber 19 is as follows: The exhaust gas of the tunnel kiln 8 runs at a flow rate of 15 m / s under the action of negative pressure. When it enters the open dust settling chamber 19, the cross-sectional area suddenly increases, the pressure decreases, and the flow rate slows down. The soot particles mixed in the exhaust gas collide with the vertical dust baffle during the low-speed operation, changing the inertial running trajectory and freely settling to the bottom of the dust settling chamber. The stoker regularly opens the ash cleaning hole 71 below the dust settling chamber for cleaning.

[0059] As Figure 9 shown, Figure 9 It is a schematic structural diagram of the fire-resistant door in the present invention. Among them, the connection method of the fire-resistant door 6 to the tunnel kiln 8 is as follows:

[0060] At the entrance and exit of the tunnel kiln 8, there is a door frame 51 made of channel steel welded on each side. The four sides of the refractory door are made of light steel, and the door core is made of light refractory material. The refractory door 6 is driven by a motor to drive a screw rod and moves up and down in the channel steel door frame that acts as a guide rail. For safety reasons, steel ropes 60 are installed at the upper corners on both sides of the refractory door 6. Above the steel ropes 60 on both sides, a fixed pulley 61 is respectively connected, and the fixed pulley 61 is connected to the door frame of the tunnel kiln 8. One end of the steel rope 60 is connected to the refractory door 6, and a counterweight iron 62 is tied to the middle end of each of the steel ropes 60. The weight of the two counterweight irons is 15% less than the weight of the refractory door; the other end of the steel rope 60 is connected to a steel rope winding and unwinding wheel 56 arranged outside the tunnel kiln 8. The steel rope winding and unwinding wheel 56 is connected to a worm gear reducer 55 through a shaft. The worm gear reducer 55 is connected to a DC motor B57 and is also connected to a storage battery 58 and a control switch 59.

[0061] An elevator 52 is also connected to the upper part of the tunnel kiln 8. The elevator 52 is connected to an AC motor 53. The square threaded screw rod 54 on the elevator 52 is connected to the refractory door 6 to control the lifting of the refractory door 6.

[0062] A commercially available conventional winch can also be selected for the refractory door 6, and the refractory door slides up and down through a slide rail. The end of the steel rope is fixed on the steel rope winding and unwinding wheel of the winch.

[0063] On the other side wall of the tunnel kiln 8, there are multiple combustion chambers 9. Specifically, it can be 1 - 5 or more combustion chambers, all within the scope of implementation of the present invention. Specifically, when implementing, the number of combustion chambers to be set is determined according to the length of the tunnel kiln, and the length of the tunnel kiln is determined according to the output. One combustion chamber can supply heat for a 9 - cubic - meter space. The combustion chamber 9 is horizontally provided with a grate in the middle, dividing the inside of the combustion chamber 9 into upper and lower compartments. The upper part is the loose firewood combustion area 22, and the lower part is the primary air suction area 23. The steel bars of the grate 21 are horizontally arranged to prevent leakage of burning coals. The secondary air heating air duct 24 is arranged on the chord top of the combustion chamber 9.

[0064] As Figure 7 shown, Figure 7 It is a schematic structural diagram of the refining pool furnace in the present invention. Among them, the furnace body of the refining pool furnace 13 is rectangular, with four walls, an arch roof on top, and four walls are built under the arch roof. Temperature - measuring holes 20 are provided on both side walls of the refining pool furnace 13. An inlet 14 is provided on one end face adjacent to the tunnel kiln 8 of the refining pool furnace 13, and a propane spray nozzle 15 is provided above the inlet 14. An outlet 16 for salt slurry is provided on the other end face of the refining pool furnace 13, and a handicraft mold 17 is provided at a position corresponding to the outside of the outlet 16 for salt slurry, so that the salt slurry 75 flows out directly into the handicraft mold 17.

[0065] The chord arch of the refining tank furnace 13 is divided into upper and lower layers. The lower layer, the first chord arch 72, is both an energy storage body and a guiding body. It can regulate and stabilize the space temperature inside the refining tank furnace, and can also direct the flame and temperature of the burner to the salt slurry outlet 16, enabling a reasonable distribution of the temperature inside the refining tank furnace 13. The upper second chord arch 73 has the functions of heat preservation and guiding back, and can guide the waste gas back in the direction of the propane burner port 15 and discharge it into the exhaust pipe 50.

[0066] The temperature inside the refining tank furnace 13 should be lower than 1413 degrees, because 1413 degrees is the boiling point of salt. If the temperature inside the furnace reaches or exceeds 1413 degrees, the salt will exist in a gaseous state, resulting in losses and waste. Therefore, an optical pyrometer with a temperature difference sound and light alarm function is provided outside the refining tank furnace to control the temperature inside the refining tank furnace within the range of 1400 degrees ± 5 degrees.

[0067] As Figure 8 shown, Figure 8 This is a schematic diagram of the installation structure of the refining tank furnace and the propane pipeline in the present invention.

[0068] The propane burner port 15 is provided with a propane burner 44, which uses propane combustion flame to bake salt blocks and refine salt slurry. The propane burner 44 is connected to a truss 45 welded by angle iron. The two side columns of the truss 45 stand beside the feeding port 14, and the column feet are fixed by pouring cement concrete. The propane cylinder 49 is placed outside the workshop of the refining tank furnace 13 and is connected to the propane burner 44 through an iron pipe to supply propane to the propane burner 44; a regulating valve 47 and a check valve 48 are also provided on the iron pipe 46. The manually operable regulating valve 47 is provided on the iron pipe at a position about 3 meters away from the propane burner to regulate the size of the propane flame and ensure the safety of the operators. The ignition device uses a long rod electronic igniter, and strictly follows the safe operation of igniting first and then supplying gas. As long as salt blocks are continuously fed into the feeding port during normal production, the propane burner must continuously spray fire to melt the salt blocks.

[0069] The propane is a green energy source. Using propane to bake salt blocks and refine salt slurry is safe. When propane burns, it produces water, hydrogen, and carbon dioxide, which are non-toxic and pollution-free. Many food processing factories, restaurants, hotels, canteens, etc. use propane flames to bake food.

[0070] The refining tank furnace 13 described in the present invention can work continuously. Semi-finished bamboo salt is successively fed into the feeding port, and the propane burner sprays fire into the furnace from above for melting and refining. The high-cleanliness and high-purity salt slurry at high temperature successively flows out of the furnace from the salt slurry outlet.

[0071] The present invention also provides a cleaning area 11, a crusher 12 and a salt loading area 1 in the outer area of the track. Since the sea salt will be baked into salt blocks every time after being baked in the tunnel kiln 8, it is necessary to clean the ash scale in the cleaning area 11, then crush it into granular salt by the crusher 12, and then stuff the crushed salt into the bamboo basket 76 in the salt loading area 1, seal it with the yellow mud cover 42, invert it on the salt-carrying trolley 2, and then enter the tunnel kiln 8 again for baking. The crusher can be a commercially available chain hammer crusher.

[0072] As Figure 2 shown, Figure 2 It is a schematic diagram of the internal structure of the combustion chamber in the present invention. The combustion mode of the combustion chamber is negative pressure direct combustion, which is realized by the chimney 18 corresponding to the combustion chamber. The dust settling chamber for dust removal is arranged below the chimney 18.

[0073] The so-called negative pressure direct combustion is to utilize the air flow upward movement generated by the atmospheric pressure difference and temperature difference to generate a suction force in the chimney, so that the flame air flow in the combustion chamber is passively led to the chimney through the tunnel kiln. This dynamic form of the flame air flow is called negative pressure. On the contrary, the form of actively spraying fire into the refining pond furnace with a flame thrower is positive pressure. The movement of the positive pressure flame air flow does not rely on the suction force of the chimney, and the chimney is only used to discharge waste gas. The so-called direct combustion is to put pine firewood into the combustion chamber, directly ignite it to generate a flame, and enter the tunnel kiln to bake the salt column. This combustion method is direct combustion. If the pine firewood is smoldered under low oxygen conditions to gasify the combustible gas "carbon monoxide", and this gas is ignited to generate a flame and enter the tunnel kiln to bake the salt column, this combustion form is called gas combustion.

[0074] As Figure 3 shown, Figure 3 It is a schematic diagram of the structure of the salt-carrying trolley in the present invention. The salt-carrying trolley 2 is connected with a circle of guard plates 26 on the upper part of the vehicle body 27, and a flat table board 25 is connected to the upper part of the guard plates 26; the lower part of the vehicle body 27 is connected with malleable cast iron wheels 29, and a through shaft A32 is arranged in the middle of the malleable cast iron wheels 29. The through shaft A32 connects two parallel malleable cast iron wheels 29 on it. The malleable cast iron wheels 29 are installed on the through shaft A32, and the through shaft A32 is matched with the copper bushing 31. The copper bushing 31 is installed in the bushing seat, and the bushing seat is installed and connected to the lower part of the vehicle body 27.

[0075] The table top of the salt-carrying trolley 2 is cast with refractory cement, with the front part long and the rear part short, which is used for overlapping and staggering joints when connecting with two adjacent salt-carrying trolleys, and can prevent radiant heat from being transmitted to the lower part of the vehicle body. The lower part of the table board 25 is wrapped with refractory materials and heat insulation materials. The heat insulation materials include materials such as industrial furnace slag. The main function of the industrial furnace slag 30 is good heat insulation performance, light weight and convenient production.

[0076] The vehicle body 27 of the salt-carrying trolley 2 is made of thick-walled stainless steel square tubes, which can prevent the vehicle body from overheating, oxidizing and abrasion. Fireproof plates 26 made of refractory materials are provided around the vehicle body 27. Malleable cast iron wheels 29 are connected to the bottom of the vehicle body 27, which are durable and easy to repair. The transmission part of the wheels is composed of a through shaft A32, a copper bush 31 and a malleable cast iron wheel 29. Since the vehicle body of the trolley is heavy, the rotation speed is slow, and the environment in which it is used is under high-temperature conditions, copper bushes are selected for matching. The through shaft A32 has a large load-bearing capacity and is not easily bent. The malleable cast iron wheel 29 is installed on the through shaft A32. The through shaft A32 is matched with the copper bush 31. The copper bush 31 is installed in the bush seat, and the bush seat is installed and connected under the vehicle body 27.

[0077] The adjustable shims 28 are connected to the square tubes at the front and rear ends of the vehicle body 27 by bolts. The adjustable shims 28 can make the adjacent two trolleys fit tightly without deviation when they are connected.

[0078] As Figure 4 shown, Figure 4 It is a schematic structural diagram of the battery-powered rail-changing vehicle in the present invention. A track B33 is connected to the upper part of the vehicle frame 34 of the battery-powered rail-changing vehicle 4. A through shaft B35 is connected to the bottom of the vehicle frame 34 through a copper bush B39. Malleable cast iron wheels B36 are respectively connected to both ends of the through shaft B35. A DC motor A37 is also connected to the middle of the through shaft B35. A battery 38 is also connected to the bottom of the vehicle frame 34. The through shaft B35 is matched with the copper bush B39, and the copper bush B39 is connected under the vehicle frame 34. An indication receiver 40 is also connected under the vehicle frame 34. During specific implementation, the forward and backward directions and speed of the battery-powered rail-changing vehicle 4 are controlled by a remote controller 41.

[0079] The battery-powered rail-changing vehicle 4 can also be replaced by commercially available similar products. The components of the battery-powered rail-changing vehicle 4 are connected by bolts.

[0080] The laying of the track A3 is from the outside of the entrance of the tunnel kiln 8 to the inside of the tunnel kiln, along both sides of the manhole 66 through the exit, and directly to the refining furnace 13. Another track leading back to the entrance is laid beside the tunnel kiln 8. The rail change is completed by the battery-powered rail-changing vehicle 4. All the tracks in the present invention are made of light rails commonly used in mines.

[0081] The manhole 66 is arranged below the ground inside the tunnel kiln 8, just like a pit for repairing cars, which is convenient for maintenance.

[0082] The power for the salt-carrying trolley 2 to enter and exit the tunnel kiln is completed by a thruster arranged at the entrance of the tunnel kiln.

[0083] The thruster 7 can be selected from commercially available similar products, which are usually available in lifting equipment factories. The structural principle of the thruster is to place the telescopic boom of the crane horizontally for use, and the telescopic function is completed by the combination of a hydraulic cylinder and a steel cable.

[0084] The curve of the furnace temperature rise is implemented according to the furnace temperature rise of Dandong Glass Container Factory's kiln. The 50 - system means that the temperature rises 50 degrees per hour. It should be noted that when the temperature rises to 300 degrees, it should be changed to 50 degrees in 2 hours, and after reaching 350 degrees, continue to execute a 50 - degree temperature rise per hour until 800 degrees or 1400 degrees.

[0085] The control of the furnace temperature for the tunnel kiln and the refining pond furnace is achieved through a commercially available optical pyrometer with temperature difference sound and light prompts. The furnace temperature rise is achieved through a commercially available thermocouple and its supporting display instrument with a recording function. At the same time, the present invention also requires a portable optical pyrometer for inspection and calibration.

[0086] As Figure 5 shown, Figure 5 is a schematic diagram of the yellow mud cover structure in the present invention;

[0087] The yellow mud cover 42 is as Figure 5 shown, Figure 5 is a schematic diagram of the structure of the yellow mud cover in the present invention. The structure of the yellow mud cover 42 is in the shape of a cover. The upper part is a flat surface, and the bottom of the cover is evenly provided with a plurality of protruding feet 43, which is a low - temperature ceramic product. The upper flat surface is circular, and the yellow mud cover 42 is made of yellow mud raw material rich in selenium.

[0088] As Figure 12 described, Figure 12 is a schematic diagram of the bamboo basket structure in the present invention;

[0089] The bamboo basket 76 is a conical bamboo basket woven with bamboo strips. The bamboo basket is a conical bamboo basket woven with bamboo strips, a conical bamboo basket with a small bottom and a large mouth.

[0090] The bamboo basket 76 has a conical structure.

[0091] Example 2

[0092] The present invention also provides an example, in which the yellow mud cover is as Figure 6 shown, Figure 6 is a schematic diagram of another example structure of the yellow mud cover in the present invention.

[0093] The structure of the yellow mud cover 42 is in the shape of a cover. The upper part is a flat surface, and the bottom of the cover is evenly provided with a plurality of protruding feet 43, which is a low - temperature ceramic product. The upper flat surface is square, and other features are the same as those in Example 1.

[0094] Example 3

[0095] The present invention further provides an embodiment, in which, in addition to the features described in Embodiment 1, the bamboo basket 76 further has the following features, as Figure 13 shown, Figure 13 This is a schematic structural diagram of another embodiment of the bamboo basket in the present invention, in which the bamboo basket 76 has a square pyramid structure, the bottom of the bamboo basket 76 is a square structure, and the top is a pyramid.

[0096] Embodiment 4

[0097] The present invention is a rapid preparation method for refined purple bamboo salt, as Figure 1 shown, which includes the following steps:

[0098] Step 1. Load sea salt into the bamboo basket on the workbench in the salt loading area 1, seal the mouth of the bamboo basket with a yellow mud cover 42, and place it upside down on the tabletop of the salt-carrying trolley.

[0099] Step 2. Transport the sea salt to the tunnel kiln through the salt-carrying trolley;

[0100] Step 3. Bake repeatedly 9 times to obtain semi-finished bamboo salt;

[0101] Step 4. Transport the semi-finished bamboo salt to the side of the refining furnace through the salt-carrying trolley, and put it into the feeding port, and melt it into a salt slurry by high-temperature propane flame refining;

[0102] Step 5. Release the salt slurry from the refining furnace into the handicraft mold for cooling;

[0103] Step 6. Process the cooled large salt slurry into purple bamboo salt handicrafts, and crush the small pieces into edible purple bamboo salt.

[0104] The combustion chamber connected to the tunnel kiln 8 of the present invention never stops firing, ensuring that the temperature in the kiln remains constant at 800 degrees, and continuous baking is carried out day and night.

[0105] During specific implementation, first, stuff the sea salt into the bamboo basket, seal the mouth of the bamboo basket with a yellow mud cover, and then place the bamboo basket on the tabletop of the salt-carrying trolley 2. The salt-carrying trolley 2 transports the sea salt to the tunnel kiln 8 through the entrance 5 by the multi-position serial baking method along the track 3. The combustion chamber burns pine firewood and never stops firing, keeping the tunnel kiln at a constant temperature of 800 degrees. Bake the sea salt in the bamboo basket continuously and repeatedly 9 times to become semi-finished bamboo salt. Then, transport the semi-finished bamboo salt through the salt-carrying trolley 2 along the track 3 and put it into the refining furnace 13 through the feeding port 14. Spray propane through the propane spout 15, melt it into a salt slurry by a high-temperature flame of 1400 degrees, and burn out all impurities in the salt slurry. After refining, release the salt slurry from the refining furnace 13 through the salt slurry outlet 16, and let it flow into the handicraft mold 17 for cooling. The large pieces are processed into purple bamboo salt handicrafts, and the small pieces are crushed into edible purple bamboo salt.

[0106] The boiling point of salt is 1413 degrees. Above this temperature, salt will exist in a gaseous state. 1400 degrees is the critical point for salt gasification and is also the recognized optimal refining temperature of Zizhu Salt Industry. It is completely feasible to control the temperature in the refining furnace within the range of 1400 degrees ± 5 degrees using an optical thermometer with temperature difference alarm and audible and visual prompts.

[0107] The temperature in the tunnel kiln furnace should not be higher than 800 degrees. If it exceeds 801 degrees, the sea salt will melt, causing waste. The actual controlled temperature in the tunnel kiln furnace is 800 degrees - 10 degrees, and the warning constant temperature is from 790 degrees to 800 degrees.

[0108] The production process of the semi-finished product of the Zizhu Salt mentioned above is to seal the bamboo basket filled with salt with a yellow mud cover 42 and put it into the tunnel kiln furnace for baking for 2 hours to become a salt column, which is the first-baked salt. Cool the salt column after it comes out of the furnace, crush it into loose salt with a crusher, then put it into a new bamboo basket 76, seal it with a mud cover, and put it into the tunnel kiln furnace for baking for 2 hours again to become a salt column. The salt column that has been baked twice is the second-baked salt. Cool and crush the salt column of the second-baked salt, put it into a new bamboo basket, seal it with a yellow mud cover, and put it into the tunnel kiln furnace for baking... Repeating the baking 9 times like this, the salt is called the nine-baked salt, nine-baked bamboo salt, bamboo salt, or ash bamboo salt, which is the semi-finished product of the Zizhu Salt.

[0109] The multi-parking space series baking method mentioned above refers to a method in which 1 - 10 parking spaces are set in the tunnel kiln furnace, the salt-carrying trolleys are numbered, and they enter the tunnel kiln furnace for baking in series and circulation through the track in sequence.

[0110] The tunnel kiln furnace can bake the salt of 1 to 10 trolleys each time. If you want to expand production and increase output, you can just lengthen the tunnel kiln furnace and increase the number of combustion chambers.

[0111] The handicrafts mentioned above include various Zizhu Salt handicrafts such as geometric bodies, playthings, ornaments, pendants, relief sculptures, round sculptures, murals, etc.

[0112] Repeating the baking of the sea salt in the bamboo basket 9 times mentioned above means that for the series baking of a single parking space in the tunnel kiln furnace of the present invention, it only takes 2 hours for one baking, and only 18 hours for 9 bakings, eliminating the procedures of furnace cleaning, furnace loading, heating and drying the furnace, and extinguishing the fire and cooling the furnace.

[0113] The salt in the bamboo basket will not topple over when being baked in the furnace because the bamboo basket is made of bamboo strips, with a small bottom and a large mouth, and is in a conical shape. When baking, the bamboo basket is placed upside down with the mouth facing downwards, not affected by the flame fluctuation and will not tilt and stack.

[0114] The advantage of sealing with the yellow mud cover is that it is clean, without mud residue, and can be reused. The yellow mud cover is made of selenium-rich yellow mud taken from the underground original soil layer, with one side flat and the other side having feet.

[0115] The production capacity potential of the tunnel kiln of the present invention is huge. Through the multi-position serial baking method, the salt loading capacity of a salt-carrying trolley 2 is equivalent to the salt loading capacity of a chamber kiln. The traditional chamber kiln is an 8-foot kiln, and the area inside the kiln is 8 feet × 8 feet ≈ 5.76 square meters. The multi-position serial baking method of the tunnel kiln results in faster discharging. Four trolleys of salt can be baked in 2 hours, with an average of 30 minutes for one trolley of salt to complete one baking. Six trolleys of salt can be baked in 2 hours, with an average of 20 minutes for one trolley of salt to complete one baking. Although the average discharging speed of a single trolley is fast, the baking time is ensured to be 2 hours.

[0116] The processing technology of the edible purple bamboo salt is to crush the small pieces of purple bamboo salt that cannot be made into handicrafts into granular forms of different mesh numbers and then classify and package them. Generally, it is divided into the following four types:

[0117] No. 1 is 5 - 80 mesh; No. 2 is 80 - 120 mesh; No. 3 is 120 - 150 mesh; No. 4 is 150 - 200 mesh.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific implementation manners of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A rapid preparation system for refined purple bamboo salt, comprising a kiln furnace, characterized in that: It also includes a refining tank furnace (13) and a pusher (7). The kiln is a tunnel kiln (8). The tunnel kiln (8) and the refining tank furnace (13) are connected by a track (3). A salt-carrying trolley (2) is provided on the track (3). Outside the tunnel kiln (8), there is another track arranged in parallel with the track inside the tunnel kiln (8). The two ends of the two parallel tracks are respectively connected with a battery rail-changing vehicle (4). The pusher (7) is connected to the track at the entrance end of the tunnel kiln (8). In the middle of the ground inside the tunnel kiln (8), there is a maintenance trench for people. Tracks (3) are laid on the ground on both sides of the trench. The track (3) extends from the entrance (5) of the tunnel kiln (8) to the outside of the exit (10) and even to the outside of the refining tank furnace (13). A pusher (7) is provided on the track outside the entrance (5). The upper part of the tunnel kiln (8) is provided with a vault, and the lower part is provided with two walls. The vault is arc-shaped and connected to the walls on both sides. Each inner side of the wall is provided with a raised fire-blocking line. Temperature measuring holes (20) are provided on the walls. A dust-settling chamber (19) is connected to the outside of one side wall, and a combustion chamber (9) is provided outside the other side wall. The upper part of the dust-settling chamber (19) is connected with a chimney (18). The chimney (18) corresponds to the combustion chamber (9) outside the tunnel kiln (8). The dust sedimentation chamber is arranged below the chimney (18). Refractory doors (6) are connected at the entrance and the exit respectively. The combustion chamber (9) never stops firing, so that the temperature in the kiln is kept at a constant 800 degrees. The furnace body of the refining tank furnace (13) is rectangular, provided with four walls, and there is a vault on it. The vault is connected to the four walls below. Temperature measuring holes (20) are provided on both side walls of the refining tank furnace (13). An inlet (14) is provided on the end face of the refining tank furnace (13) adjacent to the tunnel kiln (8). A propane spout (15) is provided above the inlet (14). An outlet for salt slurry (16) is provided on the end face wall of the other end of the refining tank furnace (13). A handicraft mold (17) is provided at a position corresponding to the outside of the outlet for salt slurry (16), so that the salt slurry (75) flows out and directly falls into the handicraft mold (17). The chord arch inside the refining tank furnace (13) is divided into upper and lower layers.

2. The rapid preparation system for refined purple bamboo salt according to claim 1, wherein: Inside the dust-settling chamber (19), there is a brick masonry with a space and a vertical dust baffle (70). The dust-settling chamber is connected to the exhaust gas outlet of the tunnel kiln (8). The cross-sectional area of the dust-settling chamber is 10 times that of the exhaust gas outlet of the tunnel kiln. A dust cleaning hole (71) is provided at the lower part of the dust-settling chamber.

3. A rapid preparation system for refined purple bamboo salt according to claim 1, characterized in that: The refractory door (6) is connected to the entrance and exit of the tunnel kiln (8). Channel steel doorframes are respectively connected to the entrance and exit. The refractory door (6) is connected to the doorframe (51) and moves up and down in the channel steel doorframe driven by a motor through a screw rod. Steel ropes (60) are respectively connected to the upper corners on both sides of the refractory door (6). The upper parts of the steel ropes are connected to fixed pulleys (61), and the fixed pulleys (61) are connected to the doorframe of the tunnel kiln (8). One end of the steel rope (60) is connected to the refractory door (6), and counterweights (62) are respectively connected to the middle parts of the steel ropes. The weight of the two counterweights is 15% less than the weight of the refractory door. The other ends of the steel ropes (60) are connected to the steel rope winding and unwinding wheels (56) arranged outside the tunnel kiln (8). The steel rope winding and unwinding wheels (56) are connected to a worm gear reducer (55) through a shaft. The worm gear reducer (55) is connected to a DC motor B (57), a storage battery (58), and a control switch (59). An elevator (52) is also connected to the upper part of the tunnel kiln (8). The elevator (52) is connected to an AC motor (53). A square-threaded screw rod (54) on the elevator (52) is connected to the refractory door (6) to control the lifting of the refractory door (6).

4. A rapid preparation system for refined purple bamboo salt according to claim 1, characterized in that: There are multiple combustion chambers (9). The combustion chambers (9) are horizontally arranged by a grate in the middle, dividing the interior of the combustion chambers (9) into an upper and a lower grid structure. The upper part is the loose firewood combustion area (22), and the lower part is the primary air suction area (23). The steel bars of the grate (21) are horizontally arranged, and the secondary air heating air duct (24) is arranged above the chord top of the combustion chamber (9).

5. A rapid preparation system for refined purple bamboo salt according to claim 1, characterized in that: A propane burner (44) is connected to the propane spout (15). The propane burner (44) is connected to a truss (45). The two side columns of the truss (45) stand beside the feeding port (14). The propane cylinder (49) is placed outside the workshop of the refining bath furnace (13). The propane cylinder (49) is connected to the propane burner (44) through an iron pipe (46). A regulating valve (47) and a check valve (48) are also arranged on the iron pipe (46).

6. The rapid preparation system for refined purple bamboo salt according to claim 1, characterized in that: The salt-carrying trolley (2) has a circle of guard plates (26) connected to the upper part of the vehicle body (27). A table board (25) is connected to the upper part of the guard plates (26). Adjustable shims (28) are respectively connected to the front and rear ends of the vehicle body (27). Malleable cast iron wheels (29) are connected to the lower part of the vehicle body (27). A through shaft A (32) is arranged in the middle of the malleable cast iron wheels (29). The through shaft A (32) connects two parallel malleable cast iron wheels (29). The malleable cast iron wheels (29) are installed on the through shaft A (32). The through shaft A (32) is matched with a copper bush (31). The copper bush (31) is installed in a bush seat, and the bush seat is installed and connected to the lower part of the vehicle body (27). The vehicle body is made of thick stainless steel square pipes; The table top of the salt-carrying trolley (2) is cast with refractory cement, with the front part long and the rear part short. A table board (25) is arranged on the upper part of the table top. Refractory materials and heat insulation materials are wrapped under the table board (25). The battery-powered rail-changing vehicle (4) has a rail (33) connected to the upper part of the vehicle frame (34). At the bottom of the vehicle frame (34), a through-shaft B (35) is connected through a copper bush B (39). Both ends of the through-shaft B (35) are respectively connected with malleable cast iron wheels B (36). A DC motor (37) is also connected to the middle of the through-shaft B (35). A battery (38) is connected to the bottom of the vehicle frame (34).

7. The preparation method of a rapid preparation system for refined purple bamboo salt according to claim 1, characterized in that: It includes the following steps: Step 1. Load sea salt into a bamboo basket in the salt loading area, seal the mouth of the bamboo basket with a yellow mud cover, and place it upside down on the tabletop of the salt-carrying trolley. The bamboo basket is a conical bamboo basket with a small bottom and a large mouth, and the yellow mud cover is a low-temperature pottery product made of selenium-rich yellow mud with one flat side and the other side provided with feet. Step 2. Transport the salt-carrying trolley with the sea salt in the bamboo basket to the tunnel kiln by the multi-position series baking method. Step 3. Repeat the baking 9 times to obtain semi-finished bamboo salt. Step 4. Transport the semi-finished bamboo salt to the side of the refining pool furnace by the salt-carrying trolley, put it into the feeding port, and refine it into a salt slurry by the high-temperature flame of propane. Step 5. Discharge the salt slurry from the refining pool furnace into a handicraft mold for cooling. Step 6. Process the cooled large salt slurry into purple bamboo salt handicrafts, and crush the small salt into edible purple bamboo salt.

8. A rapid preparation method of refined purple bamboo salt according to claim 7, characterized in that: The repeated baking 9 times means baking the bamboo basket filled with salt in the tunnel kiln for 2 hours to form a salt column. Then cool the salt column after it comes out of the kiln, crush it into loose salt, put it into a new bamboo basket, seal the mouth of the bamboo basket with a yellow mud cover, enter the tunnel kiln for baking for 2 hours to form a salt column again, then cool the salt column after it comes out of the kiln, crush it into loose salt, put it into a new bamboo basket, seal the mouth of the bamboo basket with a yellow mud cover, and send it into the tunnel kiln for baking. Repeat this baking process 9 times to obtain the semi-finished bamboo salt of purple bamboo salt. The multi-position series baking method refers to a method in which multiple positions are set in the tunnel kiln, the salt-carrying trolleys are numbered, and they are connected in series and circulated in sequence through the rail into the tunnel kiln for baking. The edible purple bamboo salt is divided into granular forms of different mesh numbers, and is divided into the following four types: Type 1: 5 - 80 mesh; Type 2: 80 - 120 mesh; Type 3: 120 - 150 mesh; Type 4: 150 - 200 mesh. The handicraft is a geometric body.

9. A rapid preparation method of refined purple bamboo salt according to claim 7, characterized in that: The handicrafts include playthings, ornaments or pendants.

10. A rapid preparation method of refined purple bamboo salt according to claim 7, characterized in that: The handicrafts include reliefs.

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