Calcium fluoride raw material drying machine and method

Abstract

The invention relates to the technical field of drying equipment, in particular to a calcium fluoride raw material drying machine which comprises a first machine frame, a second machine frame, a material storage device installed on the first machine frame and a raw material heat conveying part arranged below the material storage device, and the raw material heat conveying part is close to the material storage device. According to the calcium fluoride raw material drying machine, the process that raw materials enter the drying space can be highly utilized, the raw materials are brought into the whole drying link, the raw materials are dried in the drying space, the drying efficiency is improved, and the calcium fluoride raw material drying efficiency is improved. The drying efficiency is greatly improved in a diversified drying mode, meanwhile, the situation that dust is generated due to the fact that calcium fluoride raw materials are impacted and rubbed and collided for a long time in the drying process is effectively prevented, and pollution to the site environment and subsequent treatment links caused by the pollution in a traditional drying mode are well avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, and in particular to a calcium fluoride raw material drying machine and method. Background Art

[0002] Calcium fluoride is an inorganic compound, a colorless crystal or white powder, slightly soluble in inorganic acid, and reacts with hot concentrated sulfuric acid to generate hydrofluoric acid. Calcium fluoride has a wide range of uses, and with the advancement of science and technology, its application prospects are becoming increasingly broad. It is mainly used in the three major industries of metallurgy, chemical industry and building materials, and secondly in light industry, optics, engraving and defense industry.

[0003] The production of calcium fluoride mainly relies on the chemical reaction of several key raw materials. The quality of the raw materials directly affects the preparation quality of calcium fluoride, and the moisture content of the raw materials is an important criterion for judging the quality of the raw materials. In the early stage of calcium fluoride preparation, in order to ensure that the moisture content of the raw materials can meet the established requirements, the raw materials need to be dried. The drying process can significantly reduce the moisture content of the raw materials, thereby ensuring the smooth progress of subsequent chemical reactions. It is also an important measure to improve product quality, optimize production processes, and ensure production safety. For example, in the production of calcium fluoride, the core step of the reaction between hydrofluoric acid and calcium carbonate, if the water content of calcium oxide is too high, it will seriously affect the reaction rate and product quality; raw materials with too high a moisture content are prone to produce unnecessary side reactions during the reaction process. These side reactions not only waste raw materials, but may also lead to an increase in the impurity content in the final product. Through drying, this situation can be effectively avoided to ensure the smooth progress of the reaction, etc.

[0004] The commonly used dryers at present are mainly drum dryers and air flow dryers. Both use hot air as the drying source, but both have shortcomings and defects:

[0005] 1. When the drum dryer dries the raw materials, the filling rate of the raw materials in the drying drum is low, and most of the space is wasted. Therefore, even if the volume and drying space are large, the single drying amount is low, which indirectly leads to low drying efficiency and waste of resources;

[0006] 2. Since the raw materials of calcium fluoride are relatively small particles, they are easily affected by the impact of high-speed airflow and collision with the machine during the drying process, which will easily generate a large amount of dust, thereby polluting the on-site environment and causing more cumbersome subsequent processing links;

[0007] 3. Traditional drying dries batches of raw materials in a single way in the same space, which takes a long time to dry, so the efficiency is low, and it is very easy to have uneven drying effects, resulting in inconsistent moisture content of the raw materials, thus affecting the quality of the final calcium fluoride. Summary of the invention

[0008] The object of the present invention is to provide a calcium fluoride raw material dryer to solve the above problems.

[0009] In order to achieve the above-mentioned object, the present invention provides a calcium fluoride raw material drying machine, comprising: a first frame and a second frame, a material storage device installed on the first frame, a hot raw material transport part arranged below the material storage device, and the hot raw material transport part is close to the material storage device, a wind power lifting and transporting mechanism arranged on one side of the hot raw material transport part, and a thin layer hot drying part arranged on the wind power lifting and transporting mechanism and the second frame;

[0010] The wind-powered lifting and conveying mechanism is connected to the thin-layer thermal drying section, wherein:

[0011] The material storage device is suitable for batch storage and multi-point static heating of calcium fluoride raw materials;

[0012] The material storage device is capable of discharging the calcium fluoride raw material downward toward the hot raw material transport portion;

[0013] Driving the heat-transporting raw material unit can uniformly transport the calcium fluoride raw material to the wind-powered lifting and transporting mechanism and can uniformly heat the calcium fluoride raw material;

[0014] The wind-driven lifting mechanism is suitable for lifting the calcium fluoride raw material obliquely with a dry hot air flow, so that the calcium fluoride raw material passes through the dry hot channel and enters the thin-layer heat drying section;

[0015] The thin layer heat baking section is suitable for continuously heat baking the calcium fluoride raw material in multiple layers to heat it quickly throughout the whole body.

[0016] Further, the heat transport raw material part includes four legs arranged in a rectangular shape, two side plates with two ends respectively fixed on one of the legs, two rotating shafts rotatably installed between the two side plates, a motor fixedly installed on one of the side plates, a wide conveyor belt sleeved on the two rotating shafts in a tensioned state, a heat insulation plate installed on one of the side plates, a heating plate horizontally connected to the heat insulation plate, and the heating plate is located in the wide conveyor belt, and a first resistance wire swivel-mounted on the bottom surface of the heating plate;

[0017] The output shaft of the motor is connected to one of the rotating shafts.

[0018] Furthermore, the hot-transfer raw material section further comprises a plurality of shock-absorbing pads respectively mounted on the two side plates, two vibration-exciting plates respectively mounted between every two shock-absorbing pads, two vibrators respectively mounted on the bottom surfaces of the two vibration-exciting plates, and two vibration-exciting rods respectively connected to the side surfaces of the two vibration-exciting plates;

[0019] The two excitation plates, the two vibrators and the two excitation rods are all located in the wide conveyor belt, and the two excitation plates are respectively close to the two rotating shafts;

[0020] The two excitation plates and the two excitation rods are attached to the wide conveyor belt upwards;

[0021] The two exciting rods are respectively connected to the two ends of the two exciting plates and are arranged in a cross shape.

[0022] Furthermore, the thin layer hot drying section includes a first stand arranged on the wind-powered lifting and conveying mechanism, an annular plate body fixed on the second frame, a hollow round dish installed on the top of the annular plate body, a plurality of air-permeable storage components installed in the annular plate body at equal intervals, and the middle parts of the plurality of air-permeable storage components are all through-shaped, a semi-annular hollow component installed on the outer side wall of the lower part of the annular plate body, a first hot air blower arranged on the first stand, and the air outlet of the first hot air blower is connected to the semi-annular hollow component, a bearing semi-annular component installed on the outer side wall of the annular plate body and located below the semi-annular hollow component, a closed bottom plate movably inserted into the bearing semi-annular component, and the closed bottom plate is in contact with the bottom surfaces of the annular plate body and the plurality of air-permeable storage components, a load-bearing platform installed on the second frame, an electric push rod arranged on the load-bearing platform, and a force transmission rod having one end installed on the output end of the electric push rod and the other end connected to the bottom surface of the closed bottom plate;

[0023] A plurality of the air-permeable storage components penetrate upward through the bottom of the hollow round dish, and the top surfaces of the plurality of the air-permeable storage components are flush with the inner bottom surface of the hollow round dish;

[0024] The semi-ring hollow part connects several gaps between several of the air-permeable storage parts.

[0025] Furthermore, the wind-powered lifting and conveying mechanism includes a top frame base arranged on the side of the wide-body conveyor belt, a rectangular dish installed on the top frame base, a receiving channel connected to the open end of the rectangular dish, and the receiving channel is close to the end of the wide-body conveyor belt, a second stand arranged on the top frame base, a second hot air blower arranged on the second stand, and the air outlet of the second hot air blower is connected to the rectangular dish from one side, and is connected to the lifting and conveying channel on the other side of the rectangular dish;

[0026] The lifting and conveying channel extends obliquely upward and is connected to the hollow round vessel from the top;

[0027] The first stand is mounted on the top frame base.

[0028] Further, the material storage device comprises a material storage tank body fixed on the first frame, a groove-shaped vertical plate installed on the inner wall of the material storage tank body, a plurality of groups of second resistance wires circumferentially and closely arranged in the groove-shaped vertical plate, an electric control valve installed on the bottom of the material storage tank body, a discharge pipe connected to the electric control valve, and a breathable top sealing sheet installed at the top opening of the groove-shaped vertical plate;

[0029] The discharge pipe is located above the wide conveyor belt and close to the wide conveyor belt.

[0030] Furthermore, the material storage device also includes a plurality of groups of heat conducting rods connected to the groove-shaped vertical plates in layers from top to bottom;

[0031] Each group of several heat-conducting rods is arranged circumferentially within the material storage tank.

[0032] Furthermore, side blocking plates are installed on both sides of the wide conveyor belt.

[0033] Furthermore, the inner bottom surface of the hollow round dish is inclined from one side to which the lifting and conveying channel is connected to the other side.

[0034] According to a second aspect of the present invention, a drying method of a calcium fluoride raw material dryer is provided:

[0035] S1: When the electric control valve is closed, the raw materials to be dried are placed into the storage tank, and then several groups of second resistance wires are energized, so that the several groups of second resistance wires begin to generate heat in the groove-shaped vertical plates, and transfer the heat energy to the groove-shaped vertical plates, so that the raw materials are surrounded by the groove-shaped vertical plates with heat energy, and the heat is gradually penetrated directly into the raw materials. At the same time, several groups of heat-conducting rods guide the heat energy outward, so that the heat directly enters the interior of the raw materials;

[0036] S2: Start the motor to drive the wide-body conveyor belt to start circulating, start the two vibrators to generate vibration force, and transmit the vibration through the two excitation plates and two excitation rods to make the upper half of the wide-body conveyor belt start to generate high-frequency micro-amplitude vibration, energize the first resistance wire to make it start to heat up and transfer heat energy to the heating plate, and then make the heating plate dissipate heat toward the wide-body conveyor belt, start the first hot air blower and the second hot air blower, the second hot air blower blows out hot air to form a hot air flow along the rectangular dish and the lifting channel, the first hot air blower blows the hot air directly into the semi-annular hollow part, and the hot air immediately enters the several gaps between the several air-permeable storage components, fills all the gaps with hot air, and makes the several air-permeable storage components all wrapped in the hot air flow;

[0037] S3: Open the electric control valve to discharge the raw materials in the storage tank onto the wide conveyor belt, which then conveys the raw materials forward at a uniform speed. During the conveying process, the raw materials are heated on the wide conveyor belt and vibrate slightly at a high frequency, making full contact with the wide conveyor belt. The receiving channel catches all the raw materials at the end of the conveying direction of the wide conveyor belt. The raw materials fall freely in the receiving channel, enter the rectangular dish, and are carried by the hot air flow into the hollow round dish. Then the raw materials gradually fall into a number of air-permeable storage containers until all the air-permeable storage containers are filled.

[0038] S4: After the raw materials have completely filled up the plurality of air-permeable storage containers, the discharge speed of the electric control valve and the conveying speed of the wide-body conveyor belt are adjusted according to the established requirements, so that during the time period when the raw materials are dried in the plurality of air-permeable storage containers, the same amount of raw materials as in the plurality of air-permeable storage containers are added into the rectangular dish, and after the residence time of the raw materials in the plurality of air-permeable storage containers reaches a preset value, that is, after being fully dried by the hot air flow, the electric push rod is driven to open the closed bottom plate to expose the bottom surface of the plurality of air-permeable storage containers, and the dried raw materials are discharged downwardly, and after all the dried raw materials are discharged, the closed bottom plate is closed again to block the bottom of the plurality of air-permeable storage containers, so that a new batch of raw materials remain in the plurality of air-permeable storage containers to be dried.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The calcium fluoride raw material dryer can provide storage space for the raw materials to be dried through the storage device, and can generate heat to continuously transfer to the raw materials, so as to preheat the raw materials and heat them to a certain extent in a static heating manner, thereby heating the raw materials in advance to assist the subsequent formal drying process to proceed better;

[0041] 2. The calcium fluoride raw material dryer completes the transportation of raw materials through the hot raw material transport part and the wind-powered lifting and transporting mechanism, so that the raw materials can smoothly enter the formal drying space. At the same time, it can transfer heat to the raw materials in different heating methods during the transportation process, so as to pre-dry the raw materials before they reach the formal drying space, thereby effectively shortening the overall drying time of the raw materials;

[0042] 3. The calcium fluoride raw material dryer can pack batches of raw materials into specific intervals through the thin layer hot drying section, so that they are arranged in multiple thin layers, and can continuously generate dry hot air to wrap all the thin layer raw materials, and use the dry hot air to quickly heat dry the thin layer raw materials, thereby ensuring that all the raw materials are evenly dried, ensuring the uniformity of the drying effect and the consistent moisture content, effectively ensuring the quality of the final calcium fluoride, and at the same time maximizing the use of drying space, avoiding most of the space being wasted in traditional drying, and improving drying efficiency and resource utilization;

[0043] 4. The calcium fluoride raw material dryer can make full use of the process of raw materials entering the drying space, bring them into the entire drying process, and greatly improve the drying efficiency with diversified drying methods. At the same time, it effectively prevents the calcium fluoride raw materials from being subjected to long-term impact and friction collision during the drying process to generate dust, and well avoids the pollution of the on-site environment and the subsequent processing links caused by the traditional drying method. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0045] Figure 1 A perspective view of the present invention is shown;

[0046] Figure 2 A first partial perspective view of the present invention is shown;

[0047] Figure 3 A partial top view of the present invention is shown;

[0048] Figure 4 A partial front view of the present invention is shown;

[0049] Figure 5 A partial bottom view of the present invention at another angle is shown;

[0050] Figure 6 A second partial perspective view of the present invention is shown;

[0051] Figure 7 A third partial perspective view of the present invention is shown;

[0052] Figure 8 A fourth partial perspective view of the present invention is shown;

[0053] Fig. 9 A partial bottom view of the present invention at another angle is shown;

[0054] Fig.10 The present invention is shown Figure 2 A magnified image of point A;

[0055] Fig.11 The present invention is shown Figure 2 The enlarged view of point B;

[0056] Fig.12 The present invention is shown Figure 6 Enlarged view of point C;

[0057] Fig.13 The present invention is shown Figure 7 Enlarged view of point D.

[0058] In the figures, the same reference numerals denote the same structural elements, wherein:

[0059] 1. First rack; 2. Second rack; 3. Material storage device; 31. Material storage tank; 32. Grooved vertical plate; 33. Second resistance wire; 34. Electric control valve; 35. Discharge pipe; 36. Air-permeable top seal; 37. Heat-conducting rod; 4. Hot-transport raw material unit; 41. Legs; 42. Side plates; 43. Rotating shaft; 44. Motor; 45. Wide-body conveyor belt; 451. Side baffle; 46. Heat insulation board; 47. Heating board; 48. First resistance wire; 49. Shock-absorbing pad; 491. Excitation board; 492. Vibrator; 493, exciting rod; 5, wind-driven lifting and transporting mechanism; 51, top frame base; 52, rectangular dish; 53, receiving channel; 54, second stand; 55, second hot air blower; 56, lifting and transporting channel; 6, thin layer hot baking section; 61, first stand; 62, ring plate body; 63, hollow round dish; 64, air-permeable storage component; 65, semi-ring hollow component; 66, first hot air blower; 67, load-bearing semi-ring component; 68, closed bottom plate; 69, load-bearing platform; 691, electric push rod; 692, force transmission rod. DETAILED DESCRIPTION

[0060] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0061] like Figure 1-13 As shown, a calcium fluoride raw material drying machine is characterized by comprising: a first frame 1 and a second frame 2, a material storage device 3 installed on the first frame 1, a hot raw material transport part 4 arranged below the material storage device 3, and the hot raw material transport part 4 is close to the material storage device 3, a wind power lifting and transporting mechanism 5 arranged on one side of the hot raw material transport part 4, and a thin layer hot drying part 6 arranged on the wind power lifting and transporting mechanism 5 and the second frame 2;

[0062] The wind-powered lifting and conveying mechanism 5 is connected to the thin layer heat drying unit 6, wherein:

[0063] The storage device 3 is suitable for batch storage and multi-point static heating of calcium fluoride raw materials;

[0064] The material storage device 3 can discharge the calcium fluoride raw material downward toward the hot raw material transport part 4;

[0065] Driving the heat-transporting raw material part 4 can uniformly transport the calcium fluoride raw material to the wind-powered lifting and transporting mechanism 5 and can uniformly heat the calcium fluoride raw material;

[0066] The wind-driven lifting mechanism 5 is suitable for lifting the calcium fluoride raw material obliquely with a dry hot air flow, so that the calcium fluoride raw material passes through the dry hot channel and enters the thin-layer heat drying section 6;

[0067] The thin-layer heat drying section 6 is suitable for continuously heat-drying the calcium fluoride raw material in multiple layers so that it can be quickly heated throughout. The calcium fluoride raw material dryer can provide storage space for the raw material to be dried through the storage device 3, and can generate heat to be continuously transferred to the raw material, so as to preheat the raw material and heat-dry it to a certain extent in a static heating manner, thereby heating the raw material in advance to assist the subsequent formal drying process to be better carried out. The raw material transportation work is completed by the hot material transportation section 4 and the wind-powered lifting and transportation mechanism 5, so that it can smoothly enter the formal drying space. At the same time, it can transfer heat to the raw material during the transportation process in different heating modes, so as to pre-dry the raw material before it reaches the formal drying space, thereby effectively shortening the overall drying time of the raw material. The thin-layer heat drying section 6 can be used to pack batches of raw materials into specific intervals, so that it presents a multi-layer drying process. The thin layers are arranged at intervals, and dry hot air can be continuously generated to wrap all the thin-layer raw materials. The thin-layer raw materials are quickly dried with dry hot air, thereby ensuring that all the raw materials are evenly dried, ensuring the uniformity of the drying effect and the consistent moisture content, and effectively ensuring the quality of the final calcium fluoride. At the same time, the drying space is utilized to the maximum extent, avoiding most of the space being wasted in traditional drying, and improving the drying efficiency and resource utilization. The calcium fluoride raw material dryer can make high use of the process of raw materials entering the drying space, bringing them into the entire drying link, and greatly improving the drying efficiency with diversified drying methods. At the same time, it effectively prevents the calcium fluoride raw materials from being subjected to long-term impact and friction collision during the drying process to generate dust, and well avoids the pollution of the on-site environment and the subsequent processing links caused by the traditional drying method.

[0068] Optionally, the heat transport raw material part 4 includes four legs 41 arranged in a rectangular shape, two side plates 42 whose ends are respectively fixed on one of the legs 41, two rotating shafts 43 rotatably installed between the two side plates 42, a motor 44 fixedly installed on one of the side plates 42, a wide conveyor belt 45 sleeved on the two rotating shafts 43 in a tensioned state, a heat insulation plate 46 installed on one of the side plates 42, a heating plate 47 horizontally connected to the heat insulation plate 46, and the heating plate 47 is inside the wide conveyor belt 45, and a first resistance wire 48 rotatably installed on the bottom surface of the heating plate 47, the first resistance wire 48 and a plurality of groups of second resistance wires 33 are connected to an external power supply, and the resistance wire is an existing electronic component, which generates heat and generates a high temperature corresponding to the current when powered on;

[0069] The output shaft of the motor 44 is connected to one of the rotating shafts 43, and a complete conveyor belt is formed through four legs 41, two side plates 42, two rotating shafts 43, the motor 44 and the wide conveyor belt 45 to ensure that the raw materials can be smoothly conveyed. When conveying the raw materials, the first resistance wire 48 is energized to make it start to heat up, and the heat energy is simultaneously transferred to the heating plate 47 to heat it up, so that the heating plate 47 is used to dissipate heat in the wide conveyor belt 45, and the upper half of the wide conveyor belt 45 is continuously heated, so that when the wide conveyor belt 45 conveys the raw materials, the raw materials can be obtained. The raw materials have been dried to a certain extent, so that they have been pre-dried before entering the formal drying space, and the process of the raw materials moving into the drying space is fully utilized to effectively shorten the overall drying time of the raw materials and improve efficiency; the wide conveyor belt 45 is made of breathable and high-temperature resistant materials to ensure that it can continue to withstand the heat generated by the first resistance wire 48 while ensuring that the heat emitted by the heating plate 47 can pass through and be transferred to the raw materials for drying; the heat insulation plate 46 isolates the heat attached to the heating plate 47 to a certain extent to prevent a large amount of heat from being transferred to other components.

[0070] Optionally, the hot material transport section 4 further includes a plurality of shock-absorbing pads 49 respectively mounted on the two side plates 42, two vibration plates 491 respectively mounted between each two of the shock-absorbing pads 49, two vibrators 492 respectively mounted on the bottom surfaces of the two vibration plates 491, and two vibration rods 493 respectively connected to the sides of the two vibration plates 491, wherein the vibrator 492 is an existing machine for vibrating and can generate high-frequency micro-amplitude vibrations;

[0071] The two excitation plates 491, the two vibrators 492 and the two excitation rods 493 are all located in the wide conveyor belt 45, and the two excitation plates 491 are respectively close to the two rotating shafts 43;

[0072] The two excitation plates 491 and the two excitation rods 493 are attached to the wide conveyor belt 45 upwards, and the two vibrators 492 are started synchronously when conveying raw materials, so that they start high-frequency vibration, and the excitation force is transmitted to the wide conveyor belt 45 through the two excitation plates 491 and the two excitation rods 493, so that the upper half of the wide conveyor belt 45 synchronously generates high-frequency vibration, which causes the raw materials to jump slightly at high frequency on the wide conveyor belt 45, ensuring that the raw materials can fully contact with the wide conveyor belt 45 and be heated, thereby ensuring the drying effect of the raw materials;

[0073] The two exciting rods 493 are respectively connected to the two ends of the two exciting plates 491 and are arranged in a cross shape, so as to increase the contact range and area between the component transmitting the vibration force and the wide-body conveyor belt 45 as much as possible, thereby ensuring that the upper half of the wide-body conveyor belt 45 can vibrate at a high frequency and a small amplitude, and further ensuring that the raw materials can fully contact the wide-body conveyor belt 45; a number of shock-absorbing pads 49 absorb the vibration force to a certain extent, preventing a large amount of vibration force from being transmitted to other components and affecting the overall mechanical structure.

[0074] Optionally, the thin layer hot drying section 6 includes a first stand 61 arranged on the wind-powered lifting and conveying mechanism 5, a ring plate body 62 fixed on the second frame 2, a hollow round dish 63 installed on the top of the ring plate body 62, a plurality of air-permeable storage components 64 installed in the ring plate body 62 at equal intervals, and the middle parts of the plurality of air-permeable storage components 64 are all through-shaped, a semi-annular hollow component 65 installed on the outer side wall of the lower part of the ring plate body 62, and a first hot air blower 66 arranged on the first stand 61, and the air outlet of the first hot air blower 66 is aligned with the semi-annular hollow component 65. The second frame 2 is connected to the second machine frame 2, a load-bearing semi-ring member 67 installed on the outer side wall of the ring plate body 62 and located below the semi-ring hollow member 65, a closed bottom plate 68 movably inserted in the load-bearing semi-ring member 67, and the closed bottom plate 68 is in contact with the bottom surfaces of the ring plate body 62 and the plurality of the air-permeable storage containers 64, a load-bearing platform 69 installed on the second frame 2, an electric push rod 691 arranged on the load-bearing platform 69, and a force transmission rod member 692 having one end installed on the output end of the electric push rod 691 and the other end connected to the bottom surface of the closed bottom plate 68;

[0075] A plurality of the air-permeable storage components 64 penetrate upward through the bottom of the hollow round dish 63, and the top surfaces of the plurality of the air-permeable storage components 64 are flush with the inner bottom surface of the hollow round dish 63;

[0076] The semi-annular hollow part 65 connects to the several gaps between the several air-permeable storage parts 64. After the raw material enters the hollow round dish 63, it gradually leaks downward into the several air-permeable storage parts 64. At the same time, the first hot air blower 66 is started to blow hot air outward. After the hot air enters the semi-annular hollow part 65, it passes into the gaps between the several air-permeable storage parts 64, thereby wrapping all the air-permeable storage parts 64 and the raw materials therein. The raw material is continuously dried by the dry hot air flow. Since the several air-permeable storage parts 64 make the raw material into a thin layer, the dry hot air flow can enter the air-permeable storage parts 64 to fill the raw material. The air permeable storage components 64 fully utilize the internal space of the ring plate body 62, so that except for the gap for hot air to enter, other parts are used for raw materials to be placed and dried, thereby maximizing the use of drying space, effectively avoiding the waste of most of the space in traditional drying, and improving the drying efficiency and the utilization rate of resources. When the current batch is dried after it is fully filled, the discharge speed of the electric control valve 34 and the conveying speed of the wide conveyor belt 45 are adjusted to suitable values ​​to ensure that the same amount of raw materials as the plurality of air-permeable storage containers 64 can be added into the hollow dish 63 during the period from the beginning of the drying of the current batch of raw materials to the completion of the drying. After the current batch of raw materials has been dried, the electric push rod 691 is driven to gradually open the closed bottom plate 68 until the bottom surfaces of all the plurality of air-permeable storage containers 64 are completely exposed, so that the dried raw materials can quickly leak downwards. The dried raw materials are collected while leaking out, and the raw materials added into the hollow round dish 63 are immediately entered into a plurality of air-permeable storage containers 64. According to the time required for the raw materials in the plurality of air-permeable storage containers 64 to leak out, the electric push rod 691 is driven again at a fixed time to pull the closed bottom plate 68 back to seal the bottom surfaces of the plurality of air-permeable storage containers 64, so that a new batch of raw materials can be dried in the plurality of air-permeable storage containers 64, thereby ensuring the formation of a complete virtuous cycle and a high degree of connection, so that the entire drying work can be carried out in an orderly manner, avoiding additional shutdowns for loading and other work, and further ensuring the drying efficiency.

[0077] Optionally, the wind-powered lifting and conveying mechanism 5 includes a top frame base 51 arranged on the side of the wide-body conveyor belt 45, a rectangular dish 52 installed on the top frame base 51, a receiving channel 53 connected to the open end of the rectangular dish 52, and the receiving channel 53 is close to the end of the wide-body conveyor belt 45, a second stand 54 arranged on the top frame base 51, and a second hot air blower 55 arranged on the second stand 54, and the air outlet of the second hot air blower 55 is connected to the rectangular dish 52 from one side, and is connected to the lifting and conveying channel 56 on the other side of the rectangular dish 52;

[0078] The lifting channel 56 extends obliquely upward and is connected to the hollow round vessel 63 from the top;

[0079] The first stand 61 is installed on the top frame base 51. When conveying raw materials, the second hot air blower 55 is started to blow hot air into the rectangular dish 52. When the raw materials conveyed by the wide conveyor belt 45 reach its end, the raw materials enter the receiving channel 53 downward and fall freely. The moment the raw materials enter the rectangular dish 52, they are engulfed by the hot air generated by the second hot air blower 55 and move forward until they enter the hollow round dish 63 along the lifting channel 56. In this process, the raw materials are conveyed in an entrained manner. After the raw materials are conveyed and smoothly enter the drying space, the dry and hot air flow is used to pre-dry the raw materials before formal drying, thereby further utilizing the raw materials conveying process, shortening the overall drying time, and improving efficiency.

[0080] Optionally, the material storage device 3 includes a material storage tank body 31 fixed on the first frame 1, a groove-shaped vertical plate 32 installed on the inner side wall of the material storage tank body 31, a plurality of groups of second resistance wires 33 circumferentially and closely arranged in the groove-shaped vertical plate 32, an electric control valve 34 installed on the bottom of the material storage tank body 31, a discharge pipe 35 connected to the electric control valve 34, and a breathable top sealing sheet 36 installed at the top opening of the groove-shaped vertical plate 32;

[0081] The discharge pipe 35 is located above the wide conveyor belt 45 and close to the wide conveyor belt 45. When drying, the raw materials to be dried are first stored in a large quantity in the storage tank 31, and then a plurality of groups of second resistance wires 33 are energized to generate heat, generating an adaptive high temperature corresponding to the set current, and then the heat energy is transferred to the grooved vertical plate 32 to gradually heat it up, and the raw materials are directly in contact with the grooved vertical plate 32, so that heat is continuously transferred from the grooved vertical plate 32 to the raw materials, thereby completing the preheating of the raw materials, enabling the moisture contained therein to be evaporated to a certain extent, enabling the subsequent formal drying to be carried out better, and comprehensively utilizing all links of the raw material drying to effectively improve the drying efficiency.

[0082] Optionally, the storage device 3 further includes a plurality of groups of heat conducting rods 37 connected to the groove-shaped vertical plate 32 in layers from top to bottom;

[0083] Each group of heat-conducting rods 37 is arranged on the inner circumference of the storage tank body 31. The heat-conducting rods 37 in each group absorb the heat on the grooved vertical plates 32, and are directly inserted into the interior of the raw materials to heat and dry them, thereby avoiding the slow speed and incomplete heating caused by only the grooved vertical plates 32 heating on the periphery, thereby improving the effect of preheating the raw materials.

[0084] Optionally, side blocking pieces 451 are installed on both sides of the wide conveyor belt 45 to block the two sides of the wide conveyor belt 45 to prevent the raw materials from falling outward from the two sides of the wide conveyor belt 45 due to high-frequency micro-amplitude vibration.

[0085] Optionally, the inner bottom surface of the hollow dish 63 is inclined from one side to which the lifting and conveying channel 56 is connected to the other side, ensuring that the raw materials can be stacked in order from the lower side to the higher side when the raw materials are continuously conveyed into the hollow dish 63, thereby completely covering the plurality of air-permeable storage containers 64, ensuring that the raw materials can smoothly fall into the plurality of air-permeable storage containers 64, and preventing the raw materials from accumulating below the access point of the lifting and conveying channel 56, thereby causing uneven distribution of the raw materials in the hollow dish 63 and affecting the conveying of the raw materials.

[0086] In addition, in another embodiment of the invention, a drying method of a calcium fluoride raw material dryer is provided, comprising the following steps:

[0087] S1: When the electric control valve 34 is closed, the raw materials to be dried are put into the storage tank 31, and then the plurality of second resistance wires 33 are energized, so that the plurality of second resistance wires 33 begin to generate heat in the groove-shaped vertical plate 32, and transfer the heat energy to the groove-shaped vertical plate 32, so that the raw materials are surrounded by the groove-shaped vertical plate 32 with heat energy, and the heat is directly penetrated into the raw materials gradually, and at the same time, the plurality of heat-conducting rods 37 guide the heat energy outward, so that the heat directly enters the interior of the raw materials;

[0088] S2: Start the motor 44 to drive the wide-body conveyor belt 45 to start circulating, start the two vibrators 492 to generate vibration force, and transmit the vibration force through the two exciting plates 491 and the two exciting rods 493 to make the upper half of the wide-body conveyor belt 45 start to generate high-frequency micro-amplitude vibration, energize the first resistance wire 48 to make it start to heat up and transfer the heat energy to the heating plate 47, and then make the heating plate 47 dissipate the heat toward the wide-body conveyor belt 45, start the first hot air blower 66 and the second hot air blower 55, the second hot air blower 55 blows out the hot air, and forms a hot air flow along the rectangular dish 52 and the lifting channel 56, the first hot air blower 66 blows the hot air directly into the semi-annular hollow part 65, and the hot air immediately enters the several gaps between the several air-permeable storage components 64, and fills all the gaps with hot air, so that the several air-permeable storage components 64 are all wrapped in the hot air flow;

[0089] S3: Open the electric control valve 34 to discharge the raw materials in the storage tank 31 onto the wide conveyor belt 45, and the wide conveyor belt 45 then transports the raw materials forward at a uniform speed. During the transportation process, the raw materials are heated on the wide conveyor belt 45 and vibrate slightly at a high frequency, fully contacting the wide conveyor belt 45. The receiving channel 53 receives all the raw materials at the end of the wide conveyor belt 45 in the conveying direction. The raw materials fall freely in the receiving channel 53, enter the rectangular dish 52, and are carried by the hot air flow into the hollow round dish 63. Then the raw materials gradually fall into the plurality of air-permeable storage containers 64 until the plurality of air-permeable storage containers 64 are fully filled.

[0090] S4: After the raw materials have completely filled the plurality of air-permeable storage containers 64, the discharge speed of the electric-controlled valve 34 and the conveying speed of the wide-body conveyor belt 45 are adjusted according to the established requirements, so that during the time period when the raw materials are dried in the plurality of air-permeable storage containers 64, the same amount of raw materials as in the plurality of air-permeable storage containers 64 are added into the rectangular dish 52, and after the residence time of the raw materials in the plurality of air-permeable storage containers 64 reaches a preset value, that is, after being fully dried by the hot air flow, the electric push rod 691 is driven to open the closed bottom plate 68 to expose the bottom surfaces of the plurality of air-permeable storage containers 64, and the dried raw materials are discharged downwardly, and after all the dried raw materials are discharged, the closed bottom plate 68 is closed again to block the bottoms of the plurality of air-permeable storage containers 64, so that a new batch of raw materials remain in the plurality of air-permeable storage containers 64 to be dried.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A calcium fluoride raw material dryer, characterized in that: include: A first frame (1) and a second frame (2), a material storage device (3) mounted on the first frame (1), a heat transfer raw material section (4) arranged below the material storage device (3), the heat transfer raw material section (4) being close to the material storage device (3), a wind power lifting and conveying mechanism (5) arranged on one side of the heat transfer raw material section (4), and a thin layer heat drying section (6) arranged on the wind power lifting and conveying mechanism (5) and the second frame (2); The wind-powered lifting and conveying mechanism (5) is connected to the thin-layer thermal drying section (6), wherein: The material storage device (3) is suitable for batch storage and multi-point static heating of calcium fluoride raw materials; The material storage device (3) is capable of discharging the calcium fluoride raw material downward toward the hot raw material transport portion (4); Driving the heat-transporting raw material section (4) can uniformly transport the calcium fluoride raw material to the wind-powered lifting and transporting mechanism (5) and can uniformly heat the calcium fluoride raw material; The wind-driven lifting mechanism (5) is suitable for lifting the calcium fluoride raw material obliquely with a dry hot air flow, so that the calcium fluoride raw material passes through the dry hot channel and enters the thin-layer heat drying section (6); The thin layer heat-baking section (6) is suitable for continuously heat-baking the calcium fluoride raw material in multiple layers so that the whole body of the raw material is quickly heated.

2. The calcium fluoride raw material dryer according to claim 1, characterized in that: The heat transport raw material section (4) comprises four supporting legs (41) arranged in a rectangular shape, two side plates (42) whose two ends are respectively fixed on one of the supporting legs (41), two rotating shafts (43) rotatably mounted between the two side plates (42), a motor (44) fixedly mounted on one of the side plates (42), a wide conveyor belt (45) sleeved on the two rotating shafts (43) in a tensioned state, a heat insulation plate (46) mounted on one of the side plates (42), a heating plate (47) horizontally connected to the heat insulation plate (46), and the heating plate (47) is located inside the wide conveyor belt (45), and a first resistance wire (48) rotatably mounted on the bottom surface of the heating plate (47); The output shaft of the motor (44) is connected to one of the rotating shafts (43).

3. The calcium fluoride raw material dryer according to claim 2, characterized in that: The hot material transfer section (4) further comprises a plurality of shock absorbing pads (49) respectively mounted on the two side plates (42), two vibration excitation plates (491) respectively mounted between each two of the shock absorbing pads (49), two vibrators (492) respectively mounted on the bottom surfaces of the two vibration excitation plates (491), and two vibration excitation rods (493) respectively connected to the side surfaces of the two vibration excitation plates (491); The two excitation plates (491), the two vibrators (492) and the two excitation rods (493) are all located in the wide conveyor belt (45), and the two excitation plates (491) are respectively close to the two rotating shafts (43); The two excitation plates (491) and the two excitation rods (493) are attached upward to the wide conveyor belt (45); The two excitation rods (493) are respectively connected to the two ends of the two excitation plates (491) and are arranged in a cross shape.

4. The calcium fluoride raw material dryer according to claim 3, characterized in that: The thin layer hot drying section (6) comprises a first stand (61) arranged on the wind-powered lifting and conveying mechanism (5), a ring plate body (62) fixed on the second frame (2), a hollow round dish (63) installed on the top of the ring plate body (62), a plurality of air-permeable storage components (64) installed in the ring plate body (62) at equal intervals, and the middle parts of the plurality of air-permeable storage components (64) are all through-shaped, a semi-annular hollow component (65) installed on the outer side wall of the lower part of the ring plate body (62), and a first hot air blower (66) arranged on the first stand (61), and the air outlet of the first hot air blower (66) is aligned with the semi-annular hollow component (65). 5), a load-bearing semi-ring member (67) mounted on the outer wall of the ring plate body (62) and located below the semi-ring hollow member (65), a closed bottom plate (68) movably inserted into the load-bearing semi-ring member (67), and the closed bottom plate (68) is in contact with the bottom surfaces of the ring plate body (62) and the plurality of the air-permeable storage members (64), a load-bearing platform (69) mounted on the second frame (2), an electric push rod (691) arranged on the load-bearing platform (69), and a force transmission rod member (692) having one end mounted on the output end of the electric push rod (691) and the other end connected to the bottom surface of the closed bottom plate (68); A plurality of the air-permeable storage components (64) penetrate upward through the bottom of the hollow round dish (63), and the top surfaces of the plurality of the air-permeable storage components (64) are flush with the inner bottom surface of the hollow round dish (63); The semi-annular hollow part (65) connects a plurality of gaps between a plurality of the air-permeable storage components (64).

5. The calcium fluoride raw material dryer according to claim 4, characterized in that: The wind-powered lifting and conveying mechanism (5) comprises a top frame base (51) arranged on the side of the wide-body conveyor belt (45), a rectangular dish (52) installed on the top frame base (51), a receiving channel (53) connected to the open end of the rectangular dish (52), and the receiving channel (53) is close to the end of the wide-body conveyor belt (45), a second stand (54) arranged on the top frame base (51), and a second hot air blower (55) arranged on the second stand (54), and the air outlet of the second hot air blower (55) is connected to the rectangular dish (52) from one side, and is connected to the lifting and conveying channel (56) on the other side of the rectangular dish (52); The lifting channel (56) extends obliquely upward and is connected to the hollow round dish (63) from the top; The first stand (61) is mounted on the top frame base (51).

6. The calcium fluoride raw material dryer according to claim 5, characterized in that: The material storage device (3) comprises a material storage tank body (31) fixed on the first frame (1), a groove-shaped vertical plate (32) installed on the inner side wall of the material storage tank body (31), a plurality of groups of second resistance wires (33) circumferentially and closely arranged in the groove-shaped vertical plate (32), an electric control valve (34) installed on the bottom of the material storage tank body (31), a discharge pipe (35) connected to the electric control valve (34), and a breathable top sealing sheet (36) installed at the top opening of the groove-shaped vertical plate (32); The discharge pipe (35) is located above the wide conveyor belt (45) and is close to the wide conveyor belt (45).

7. The calcium fluoride raw material dryer according to claim 6, characterized in that: The material storage device (3) further comprises a plurality of groups of heat conducting rods (37) connected to the groove-shaped vertical plate (32) in layers from top to bottom; Each group of the heat-conducting rods (37) is arranged on the inner circumference of the material storage tank (31).

8. The calcium fluoride raw material dryer according to claim 7, characterized in that: Side blocking plates (451) are installed on both sides of the wide conveyor belt (45).

9. The calcium fluoride raw material dryer according to claim 8, characterized in that: The inner bottom surface of the hollow round dish (63) is inclined from one side where the lifting and conveying channel (56) is connected to the other side.

10. The calcium fluoride raw material dryer according to any one of claims 1 to 9, wherein the drying method is: S1: When the electric control valve (34) is closed, the raw material to be dried is placed into the material storage tank (31), and then a plurality of groups of second resistance wires (33) are energized, so that the plurality of groups of second resistance wires (33) begin to generate heat in the groove-shaped vertical plate (32), and transfer the heat energy to the groove-shaped vertical plate (32), so that the raw material is surrounded by the groove-shaped vertical plate (32) with heat energy, and the heat is directly penetrated into the raw material gradually, and at the same time, the plurality of groups of heat-conducting rods (37) guide the heat energy outward, so that the heat directly enters the interior of the raw material; S2: Start the motor (44) to drive the wide conveyor belt (45) to start circulating, start the two vibrators (492) to generate vibration force, and transmit the vibration through the two vibration plates (491) and the two vibration rods (493) to make the upper half of the wide conveyor belt (45) start to generate high-frequency micro-amplitude vibration, and energize the first resistance wire (48) to make it start to heat up and transfer heat energy to the heating plate (47), so that the heating plate (47) transfers the heat to the wide conveyor belt (45) dissipating and starting the first hot air blower (66) and the second hot air blower (55), the second hot air blower (55) blows out hot air to form a hot air flow along the rectangular dish (52) and the lifting channel (56), the first hot air blower (66) blows the hot air directly into the semi-annular hollow member (65), and the hot air then enters into the plurality of gaps between the plurality of air-permeable storage members (64), filling all the gaps with hot air, so that the plurality of air-permeable storage members (64) are all wrapped in the hot air flow; S3: Open the electric control valve (34) to discharge the raw materials in the storage tank (31) onto the wide conveyor belt (45), and the wide conveyor belt (45) then transports the raw materials forward at a uniform speed. During the transportation process, the raw materials are heated on the wide conveyor belt (45) and vibrate slightly at a high frequency, fully contacting the wide conveyor belt (45). The receiving channel (53) receives all the raw materials at the end of the wide conveyor belt (45) in the transportation direction. The raw materials fall freely in the receiving channel (53), enter the rectangular dish (52), and are carried by the hot air flow into the hollow round dish (63). Then, the raw materials gradually fall into the plurality of air-permeable storage containers (64) until the plurality of air-permeable storage containers (64) are completely filled. S4: After the raw materials have completely filled the plurality of air-permeable storage containers (64), the discharge speed of the electric control valve (34) and the conveying speed of the wide conveyor belt (45) are adjusted according to the established requirements, so that during the time period when the raw materials are dried in the plurality of air-permeable storage containers (64), the same amount of raw materials as those in the plurality of air-permeable storage containers (64) are added into the rectangular dish (52). After the residence time of the raw materials in the plurality of air-permeable storage containers (64) reaches a preset value, i.e., after the raw materials are fully dried by the hot air flow, the electric push rod (691) is driven to open the closed bottom plate (68), so that the bottom surface of the plurality of air-permeable storage containers (64) is exposed, and the dried raw materials are discharged downwardly. After the dried raw materials are completely discharged, the closed bottom plate (68) is closed again to block the bottom of the plurality of air-permeable storage containers (64), so that a new batch of raw materials remain in the plurality of air-permeable storage containers (64) to be dried.

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