Double-cone vacuum dryer and silver nitrate drying method

Abstract

The invention belongs to the technical field of drying equipment, and particularly relates to a double-cone vacuum dryer and a silver nitrate drying method.The double-cone vacuum dryer comprises a stock bin, a gas circuit mechanism, a heat source mechanism, a first power mechanism, a blowing adjusting mechanism and a second power mechanism; a second power mechanism drives an arc-shaped plate in a blowing adjusting mechanism to rotate back and forth relative to the transfer bin so as to adjust the direction and the flow speed of the hot nitrogen blown out of an upper opening of the transfer bin, and when the arc-shaped plate rotates clockwise, the silver nitrate wet material which is turned upwards under the action of centrifugal force is blown away; the second power mechanism is matched with the blowing adjusting mechanism to adjust the blowing-out direction and the blowing-out flow speed of hot nitrogen in a reciprocating mode, it can be guaranteed that a dry layer on the surface of the silver nitrate wet material is broken, and the problem that the silver nitrate wet material splashes after the dry layer on the surface of the silver nitrate wet material is broken can be solved; the problems that after a drying layer is formed on the surface of the silver nitrate wet material, the internal heat and mass transfer path is lengthened, and the drying efficiency and the drying time are affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of drying equipment, and specifically relates to a dryer, and in particular to a double-cone vacuum dryer and a silver nitrate drying method. Background Art

[0002] When using a double-cone vacuum dryer for vacuum drying, as the drying continues, in the middle and late stages of drying, the vacuum degree inside the dryer tends to be stable, and the moisture on the surface of the silver nitrate wet material is completely evaporated, that is, a dry layer is formed on the surface of the silver nitrate wet material. The vaporized moisture gradually moves into the interior of the silver nitrate wet material. At this time, the heat and mass transfer pathways inside the silver nitrate wet material are lengthened, and the evaporation amount of the silver nitrate wet material becomes smaller, resulting in a significant reduction in drying efficiency and a significant extension of the drying time.

[0003] Therefore, it is urgent to develop a new double-cone vacuum dryer and silver nitrate drying method to solve the technical problem of affecting the heat and mass transfer inside the silver nitrate wet material after the dry layer is formed on the surface of the silver nitrate wet material.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a double-cone vacuum dryer and a silver nitrate drying method.

[0006] In the first aspect, the embodiment of the present disclosure provides a double-cone vacuum dryer, which includes: a silo, an air path mechanism, a heat source mechanism, a first power mechanism, an air blowing adjustment mechanism, and a second power mechanism; wherein the air path mechanism is connected to the inner cavity of the silo, the heat source mechanism is connected to the outer cavity of the silo, and the first power mechanism is connected to the silo; the air blowing adjustment mechanism is located in the inner cavity, the air blowing adjustment mechanism is connected to the air path mechanism, and the second power mechanism is movably connected to the air blowing adjustment mechanism; when silver nitrate wet material is added to the inner cavity, the air path mechanism vacuumizes the inner cavity and blows hot nitrogen into the air blowing adjustment mechanism, and the heat source mechanism circulates to A heat preservation source is pumped into the outer cavity, and the first power mechanism drives the silo to rotate so as to dry the wet silver nitrate in the inner cavity; the second power mechanism drives the arc plate in the blowing adjustment mechanism to rotate back and forth relative to the transfer silo so as to adjust the direction and flow rate of the hot nitrogen gas blown out from the opening on the transfer silo; when the arc plate rotates clockwise, the opening is gradually closed and the flow rate of the nitrogen gas blown out from the opening is gradually increased so as to blow away the wet silver nitrate that is flipped upward under the action of centrifugal force; when the arc plate rotates counterclockwise, the opening is gradually opened and the flow rate of the nitrogen gas blown out from the opening is gradually reduced so as to attract the blown wet silver nitrate to concentrate at the bottom of the inner cavity.

[0007] In an optional embodiment, the air circuit mechanism includes: an air extraction pipeline and a vacuum pump; the air extraction pipeline is connected to the inner cavity; the air extraction pipeline is connected to the vacuum pump to vacuum the inner cavity.

[0008] In an optional embodiment, the air circuit mechanism includes: an air charging pipeline and a nitrogen pump; the air charging pipeline extends into the inner cavity and communicates with the blowing adjustment mechanism; the air charging pipeline is connected to the nitrogen pump to charge hot nitrogen into the blowing adjustment mechanism.

[0009] In an optional embodiment, the heat source mechanism includes: a liquid pipeline and a heat source pump; the liquid pipeline is connected to the external cavity; the liquid pipeline is connected to the heat source pump to circulate the heat preservation source into the external cavity.

[0010] In an optional embodiment, the blowing adjustment mechanism includes: a transfer bin and a curved plate; the inflation pipeline in the air path mechanism is connected to the transfer bin, the curved plate is located in the transfer bin, and the curved plate is movably connected to the second power mechanism; an opening is provided on the transfer bin, and the opening is located on the moving path of the curved plate; the second power mechanism drives the curved plate to rotate back and forth relative to the transfer bin to adjust the direction and flow rate of the hot nitrogen blown out from the opening.

[0011] In an optional embodiment, the transfer bin is cylindrical, and the arc-shaped plate is in contact with the inner wall of the transfer bin.

[0012] In an optional embodiment, a first guide plate is provided on the upper edge of the opening, and a second guide plate is provided on the arc plate. The first guide plate and the second guide plate are arranged in an eight-shaped shape to guide the hot nitrogen to be blown out from between the first guide plate and the second guide plate.

[0013] In an optional embodiment, the second power mechanism includes: a rotation driving member; the rotation driving member is connected to the arc plate to drive the arc plate to rotate.

[0014] In an optional embodiment, the first power mechanism includes: a belt-driven power source; the belt-driven power source is connected to the silo to drive the silo to rotate.

[0015] In an optional embodiment, a jacket is provided in the silo to separate an inner cavity and an outer cavity in the silo.

[0016] In a second aspect, the embodiments of the present disclosure also provide a silver nitrate drying method as described above, which includes: adding wet silver nitrate into the inner cavity, evacuating the inner cavity and blowing hot nitrogen into the blowing adjustment mechanism, and circulatedly pumping the heat preservation source into the outer cavity, while driving the hopper to rotate to dry the wet silver nitrate in the inner cavity; driving the arc plate in the blowing adjustment mechanism to rotate back and forth relative to the transfer hopper to adjust the direction and flow rate of the hot nitrogen blown out from the opening on the transfer hopper, and when the arc plate rotates clockwise, the opening is gradually closed and the flow rate of the nitrogen blown out from the opening is gradually increased, so as to blow away the wet silver nitrate that is flipped upward under the action of centrifugal force.

[0017] The beneficial effect of the present invention is that the present invention transfers heat from the outer cavity to the inner cavity through the heat source mechanism, and at the same time the air path mechanism directly injects heat into the inner cavity through the blowing adjustment mechanism, thereby realizing two-way heat conduction to improve the drying efficiency. The second power mechanism cooperates with the blowing adjustment mechanism to reciprocately adjust the blowing direction and blowing flow rate of the hot nitrogen, which can not only ensure that the dry layer on the surface of the silver nitrate wet material is broken, but also avoid the problem of the silver nitrate wet material splashing after the dry layer on the surface of the silver nitrate wet material is broken, that is, overcome the problem that after the dry layer is formed on the surface of the silver nitrate wet material, the internal heat and mass transfer path is lengthened, affecting the drying efficiency and drying time.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A structural diagram of a double-cone vacuum dryer provided in an embodiment of the present disclosure; Figure 2 A cross-sectional view of a double-cone vacuum dryer provided in an embodiment of the present disclosure; Figure 3 A structural diagram of an air blowing adjustment mechanism provided in an embodiment of the present disclosure; Figure 4 A cross-sectional view of an air blowing adjustment mechanism provided in an embodiment of the present disclosure; Figure 5 A schematic diagram of an air blowing adjustment mechanism for blowing away wet silver nitrate material provided by an embodiment of the present disclosure; Figure 6 A schematic diagram of an air blowing adjustment mechanism for collecting wet silver nitrate material provided in an embodiment of the present disclosure.

[0022] In the picture: 1. Silo; 11. Inner cavity; 12. Outer cavity; 13. Jacket; 2. Air circuit mechanism; 21. Air extraction pipeline; 22. Air filling pipeline; 3. Heat source mechanism; 31. Liquid pipeline; 32. Heat source pump; 4. First power mechanism; 41. Belt drive power source; 5. Blowing adjustment mechanism; 51. Transfer chamber; 511. Opening; 512. Air inlet; 52. Curved plate; 53. First guide plate; 54. Second guide plate; 55. Connecting plate; 6. Second power mechanism; 61. Rotation drive member; 7. Silver nitrate wet material. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0025] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0028] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0029] Research has found that when using a double-cone vacuum dryer for vacuum drying, as drying continues, the vacuum level inside the dryer stabilizes in the middle and late stages of drying. The moisture on the surface of the silver nitrate wet material evaporates completely, forming a dry layer on the surface. The vaporized moisture gradually moves into the interior of the silver nitrate wet material. At this point, the heat and mass transfer pathways within the silver nitrate wet material are lengthened, and the evaporation rate is low, resulting in significantly reduced drying efficiency and prolonged drying time. Furthermore, because the top and bottom of the double-cone vacuum dryer are conical barrels, the silver nitrate wet material is deposited in the two barrels, making it difficult to disperse.

[0030] Based on the above research, the embodiments of the present disclosure provide a double-cone vacuum dryer and a silver nitrate drying method, which can blow away the clumped silver nitrate wet material, destroy the dry layer formed on its surface, and achieve heat and mass transfer to the interior of the silver nitrate wet material to improve the drying efficiency.

[0031] The defects in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0034] like Figures 1 to 6 As shown, at least one embodiment provides a double-cone vacuum dryer, which includes: a silo 1, an air circuit mechanism 2, a heat source mechanism 3, a first power mechanism 4, an air blowing adjustment mechanism 5 and a second power mechanism 6; wherein the air circuit mechanism 2 is communicated with the inner cavity 11 of the silo 1, the heat source mechanism 3 is communicated with the outer cavity 12 of the silo 1, and the first power mechanism 4 is connected to the silo 1; the air blowing adjustment mechanism 5 is located in the inner cavity 11, the air blowing adjustment mechanism 5 is communicated with the air circuit mechanism 2, and the second power mechanism 6 is movably connected with the air blowing adjustment mechanism 5; when silver nitrate wet material 7 is put into the inner cavity 11, the air circuit mechanism 2 vacuums the inner cavity 11 and blows hot nitrogen into the air blowing adjustment mechanism 5, and the heat source mechanism 3 circulates to the outer cavity 12 The heat preservation source is pumped in, and the first power mechanism 4 drives the silo 1 to rotate so as to dry the silver nitrate wet material 7 in the inner cavity 11; the second power mechanism 6 drives the arc plate 52 in the blowing adjustment mechanism 5 to rotate back and forth relative to the transfer bin 51 so as to adjust the direction and flow rate of the hot nitrogen gas blown out from the opening 511 on the transfer bin 51, and when the arc plate 52 rotates clockwise, the opening 511 is gradually closed and the flow rate of the nitrogen gas blown out from the opening 511 is gradually increased, so as to blow away the silver nitrate wet material 7 that is flipped upward under the action of centrifugal force; when the arc plate 52 rotates counterclockwise, the opening 511 is gradually opened and the flow rate of the nitrogen gas blown out from the opening 511 is gradually reduced, so as to attract the blown silver nitrate wet material 7 to be concentrated to the bottom of the inner cavity 11.

[0035] In at least one embodiment, heat is transferred from the outer cavity 12 to the inner cavity 11 through the heat source mechanism 3, and at the same time, the air path mechanism 2 directly injects heat into the inner cavity 11 through the blowing adjustment mechanism 5, thereby realizing two-way heat conduction to improve the drying efficiency. Since the silo 1 is a double-cone setting, only when the hot nitrogen is adjusted by the blowing adjustment mechanism 5 to be blown toward the non-conical barrel direction of the silo 1 and the blowing flow rate is strong, can the silver nitrate wet material 7 that is flipped upward under the action of centrifugal force be blown away. If the hot nitrogen is continuously blown out in the same direction after the dry layer on the surface of the silver nitrate wet material 7 is broken, it will cause the silver nitrate wet material 7 to splash. The second power mechanism 6 cooperates with the blowing adjustment mechanism 5 to reciprocately adjust the blowing direction and blowing flow rate of the hot nitrogen, so as to ensure that the dry layer on the surface of the silver nitrate wet material 7 is broken, and avoid the problem of the silver nitrate wet material 7 splashing after the dry layer on the surface of the silver nitrate wet material 7 is broken, that is, overcome the problem that after the dry layer is formed on the surface of the silver nitrate wet material 7, the internal heat and mass transfer pathways are lengthened, affecting the drying efficiency and drying time.

[0036] In at least one embodiment, see Figure 2 The air path mechanism 2 includes: an air extraction pipeline 21 and a vacuum pump; the air extraction pipeline 21 is connected to the inner cavity 11; the air extraction pipeline 21 is connected to the vacuum pump to vacuum the inner cavity 11.

[0037] Specifically, the exhaust pipe 21 cooperates with the vacuum pump to evacuate the inner cavity 11, so that the inner cavity 11 forms a vacuum negative pressure state, lowers the boiling point of the liquid in the silver nitrate wet material 7 to precipitate the solvent, and can extract water vapor, and dry the silver nitrate wet material 7 by combining the two aspects of lowering the boiling point to enhance evaporation and tumbling to renew the heat transfer surface.

[0038] In at least one embodiment, see Figure 2 The air path mechanism 2 includes: an air charging pipeline 22 and a nitrogen pump; the air charging pipeline 22 extends into the inner cavity 11 and communicates with the air blowing adjustment mechanism 5; the air charging pipeline 22 is connected to the nitrogen pump to charge hot nitrogen into the air blowing adjustment mechanism 5.

[0039] Specifically, the pumping amount of the nitrogen pump is less than the extraction amount of the vacuum pump, which can ensure that the water vapor generated by the drying of the silver nitrate wet material 7 is extracted.

[0040] Specifically, the air extraction pipeline 21 and the air charging pipeline 22 are both hard pipelines, and the air charging pipeline 22 is inside the air extraction pipeline 21 .

[0041] Specifically, the inflation pipeline 22 cooperates with the nitrogen pump to add hot nitrogen into the inner cavity 11, which can accelerate the drying of the silver nitrate wet material 7.

[0042] Specifically, hot nitrogen is pumped into the inner cavity 11, and the vacuum degree of the inner cavity 11 is controlled by controlling the air intake, and the hot nitrogen is used to assist in drying the wet material. In the later stage of silver nitrate drying, the evaporation amount of the material is small and the pressure difference between the inside and outside of the material pile is very small, which significantly reduces the drying efficiency and significantly prolongs the drying time. Therefore, pumping hot nitrogen into the inner cavity 11 during drying can promote drying.

[0043] In at least one embodiment, see Figure 2 The heat source mechanism 3 includes: a liquid pipeline 31 and a heat source pump 32; the liquid pipeline 31 is connected to the outer cavity 12; the liquid pipeline 31 is connected to the heat source pump 32 to circulate the heat preservation source into the outer cavity 12.

[0044] Specifically, the wet silver nitrate material 7 is put into the inner cavity 11 , and the heat source pump 32 uses the liquid pipeline 31 to pump a heat preservation source (including but not limited to hot water) into the inner cavity 11 to increase the temperature in the inner cavity 11 .

[0045] In at least one embodiment, see Figure 3 、 Figure 4 The blowing adjustment mechanism 5 includes: a transfer chamber 51 and a curved plate 52; the inflation pipeline 22 in the gas path mechanism 2 is connected to the transfer chamber 51, the curved plate 52 is located in the transfer chamber 51, and the curved plate 52 is movably connected to the second power mechanism 6; an opening 511 is opened on the transfer chamber 51, and the opening 511 is located on the moving path of the curved plate 52; the second power mechanism 6 drives the curved plate 52 to reciprocate relative to the transfer chamber 51 to adjust the direction and flow rate of the hot nitrogen gas blown out from the opening 511.

[0046] Specifically, see Figure 4 The arc plate 52 rotates along the F2 direction driven by the second power mechanism 6, and at the same time Figure 2 , the direction of F2 is consistent with that of F1.

[0047] Specifically, an air inlet 512 is opened on the transfer chamber 51, and the inflation pipeline 22 is connected to the interior of the transfer chamber 51 through the air inlet 512. At the same time, the nitrogen pump maintains a constant working state, and the arc plate 52 can adjust the size of the opening 511 when rotating, that is, the larger the opening 511, the slower the flow rate, and the smaller the opening 511, the faster the flow rate.

[0048] Specifically, see Figure 5When the second power mechanism 6 drives the arc plate 52 to rotate clockwise, the opening 511 is gradually closed from the lower edge to the upper edge, and the flow rate of the nitrogen gas blown out from the opening 511 gradually increases. At the same time, the silver nitrate wet material 7 itself will be deposited at the bottom of the inner cavity 11 due to gravity. However, if the opening 511 is blown toward the bottom of the inner cavity 11, the silver nitrate wet material 7 cannot be blown away due to the presence of agglomerates. Instead, part of the silver nitrate wet material 7 is turned upward by the centrifugal force generated by the rotation of the silo 1. At this time, the hot nitrogen gas with a small range and high flow rate can blow away this part of the silver nitrate wet material 7, thereby destroying the dry layer on the surface of the silver nitrate wet material 7.

[0049] Specifically, see Figure 5 The hot nitrogen in the transfer bin 51 is blown out along the direction F3 toward the silver nitrate wet material 7 that is flipped upward under the action of centrifugal force, so as to blow away the part of the silver nitrate wet material 7 that is flipped upward toward the direction F4.

[0050] Specifically, see Figure 6 When the concentrated and high-flow nitrogen gas blows away the silver nitrate wet material 7 that is flipped upward under the action of centrifugal force, in order to prevent the silver nitrate wet material 7 from splashing, the second power mechanism 6 drives the arc plate 52 to rotate counterclockwise, and the opening 511 gradually becomes larger from the lower edge to the upper edge. At the same time, the flow rate of the nitrogen gas blown out from the opening 511 gradually decreases. Through the fluid pressure effect, it can attract the blown-away silver nitrate wet material 7 to deposit at the bottom of the inner cavity 11, thereby concentrating the silver nitrate wet material 7.

[0051] Specifically, see Figure 6 The hot nitrogen in the transfer bin 51 is blown out along the F4 direction toward the bottom of the inner cavity 11, so that the blown silver nitrate wet material 7 is gathered to the bottom of the inner cavity 11 along the F6 direction under the action of the fluid pressure.

[0052] Specifically, the second power mechanism 6 drives the arc plate 52 to rotate back and forth relative to the transfer bin 51, which can continuously break the dry layer on the surface of the silver nitrate wet material 7 and at the same time concentrate the blown-away silver nitrate wet material 7, thereby accelerating the drying of the silver nitrate wet material 7.

[0053] In at least one embodiment, see Figure 4 The transfer bin 51 is cylindrical, and the arc-shaped plate 52 is in contact with the inner wall of the transfer bin 51 .

[0054] Specifically, the arc-shaped plate 52 rotates in contact with the inner wall of the transfer bin 51 , thereby controlling the size and direction of the opening 511 .

[0055] In at least one embodiment, a first guide plate 53 is provided on the upper edge of the opening 511, and a second guide plate 54 is provided on the arc plate 52. The first guide plate 53 and the second guide plate 54 are arranged in an eight-shaped shape to guide the hot nitrogen to be blown out from between the first guide plate 53 and the second guide plate 54.

[0056] Specifically, the first guide plate 53 also serves to limit the second guide plate 54 to prevent the second guide plate 54 from excessive rotation.

[0057] In at least one embodiment, see Figure 1 The second power mechanism 6 includes: a rotating driving member 61; the rotating driving member 61 is connected to the arc plate 52 to drive the arc plate 52 to rotate.

[0058] Specifically, the rotating drive member 61 adopts a rotating motor, and the rotating shaft of the rotating drive member 61 passes through the liquid pipeline 31 and the inner cavity 11 and extends into the transfer chamber 51 and is connected to the arc plate 52 through the connecting plate 55, thereby driving the arc plate 52 to rotate.

[0059] In at least one embodiment, see Figure 1 The first power mechanism 4 includes: a belt-driven power source 41; the belt-driven power source 41 is connected to the silo 1 to drive the silo 1 to rotate.

[0060] Specifically, the belt drive power source 41 is composed of a motor, gears, belts, bearing seats, etc., and the silo 1 is installed on two bearing seats to drive the silo 1 to rotate.

[0061] Specifically, see Figure 2 , silo 1 rotates along the F1 direction.

[0062] Specifically, the belt drive power source 41 drives the entire silo 1 to rotate along the direction F1, and by turning over the wet material inside the silo 1, the wet material is continuously turned over and contacts the inner wall of the inner cavity 11 to conduct heat conduction and dry the wet material.

[0063] In at least one embodiment, a jacket 13 is provided in the silo 1 to separate an inner cavity 11 and an outer cavity 12 in the silo 1 .

[0064] Based on the same technical concept, at least one embodiment also provides a silver nitrate drying method as described above, which includes: adding silver nitrate wet material 7 into the inner cavity 11, evacuating the inner cavity 11 and blowing hot nitrogen into the blowing adjustment mechanism 5, and circulatedly pumping the insulation source into the outer cavity 12, while driving the silo 1 to rotate to dry the silver nitrate wet material 7 in the inner cavity 11; driving the arc plate 52 in the blowing adjustment mechanism 5 to rotate back and forth relative to the transfer bin 51 to adjust the direction and flow rate of the hot nitrogen blowing out from the opening 511 on the transfer bin, and when the arc plate 52 rotates clockwise, the opening 511 gradually closes along the rotation direction and the flow rate of the nitrogen blowing out from the opening 511 gradually increases, so as to blow away the silver nitrate wet material 7 that is flipped upward under the action of centrifugal force.

[0065] In summary, the present invention transfers heat from the outer cavity to the inner cavity through the heat source mechanism, and at the same time, the air path mechanism directly injects heat into the inner cavity through the blowing adjustment mechanism, thereby realizing two-way heat conduction to improve the drying efficiency. Since the silo is set as a double cone, only when the hot nitrogen is adjusted by the blowing adjustment mechanism to be blown toward the non-conical barrel direction of the silo and the blowing flow rate is strong, can the silver nitrate wet material that is flipped upward under the action of centrifugal force be blown away. If the hot nitrogen is continuously blown out in the same direction after the dry layer on the surface of the silver nitrate wet material is broken, it will cause the silver nitrate wet material to splash. The second power mechanism cooperates with the blowing adjustment mechanism to reciprocately adjust the blowing direction and blowing flow rate of the hot nitrogen, which can not only ensure that the dry layer on the surface of the silver nitrate wet material is broken, but also avoid the problem of silver nitrate wet material splashing after the dry layer on the surface of the silver nitrate wet material is broken, that is, overcome the problem that after the dry layer is formed on the surface of the silver nitrate wet material, the internal heat and mass transfer path is lengthened, affecting the drying efficiency and drying time.

[0066] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0068] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0069] In the above discussion, unless otherwise indicated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0070] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A double cone vacuum dryer, characterized in that, include: A material silo (1), an air path mechanism (2), a heat source mechanism (3), a first power mechanism (4), an air blowing adjustment mechanism (5), and a second power mechanism (6); wherein The air path mechanism (2) is in communication with the inner cavity (11) of the silo (1), the heat source mechanism (3) is in communication with the outer cavity (12) of the silo (1), and the first power mechanism (4) is connected to the silo (1); The air blowing adjustment mechanism (5) is located in the inner cavity (11), the air blowing adjustment mechanism (5) is connected to the air path mechanism (2), and the second power mechanism (6) is movably connected to the air blowing adjustment mechanism (5); When silver nitrate wet material (7) is added to the inner cavity (11), the air path mechanism (2) evacuates the inner cavity (11) and blows hot nitrogen into the air blowing adjustment mechanism (5), the heat source mechanism (3) circulates and pumps a heat preservation source into the outer cavity (12), and the first power mechanism (4) drives the hopper (1) to rotate, so as to dry the silver nitrate wet material (7) in the inner cavity (11); The second power mechanism (6) drives the arc-shaped plate (52) in the blowing adjustment mechanism (5) to rotate back and forth relative to the transfer bin (51) to adjust the direction and flow rate of the hot nitrogen blowing out from the upper opening (511) of the transfer bin (51); When the arc-shaped plate (52) rotates clockwise, the opening (511) is gradually closed and the flow rate of nitrogen gas blown out from the opening (511) is gradually increased, so as to blow away the silver nitrate wet material (7) that is turned upward under the action of centrifugal force; When the arc-shaped plate (52) rotates counterclockwise, the opening (511) gradually opens and the flow rate of nitrogen gas blown out from the opening (511) gradually decreases, so as to attract the blown silver nitrate wet material (7) to concentrate at the bottom of the inner cavity (11).

2. The double cone vacuum dryer according to claim 1, wherein The gas circuit mechanism (2) comprises: an air extraction pipeline (21) and a vacuum pump; The air extraction pipeline (21) is in communication with the inner cavity (11); The exhaust pipeline (21) is connected to a vacuum pump to evacuate the inner cavity (11).

3. The double cone vacuum dryer according to claim 2, characterized in that The gas circuit mechanism (2) comprises: an air charging pipeline (22) and a nitrogen pump; The inflation pipeline (22) extends into the inner cavity (11) and communicates with the blowing adjustment mechanism (5); The charging pipeline (22) is connected to a nitrogen pump to charge hot nitrogen into the blowing adjustment mechanism (5).

4. The double cone vacuum dryer according to claim 1, wherein The heat source mechanism (3) comprises: a liquid pipeline (31) and a heat source pump (32); The liquid passage (31) is in communication with the outer cavity (12); The liquid pipeline (31) is connected to a heat source pump (32) to circulate and pump a heat preservation source into the outer cavity (12).

5. The double cone vacuum dryer according to claim 1, characterized in that The air blowing adjustment mechanism (5) comprises: a transfer bin (51) and an arc-shaped plate (52); The air filling pipeline (22) in the air path mechanism (2) is in communication with the transfer chamber (51), the arc plate (52) is located in the transfer chamber (51), and the arc plate (52) is movably connected to the second power mechanism (6); The transfer bin (51) is provided with an opening (511), and the opening (511) is located on the moving path of the arc plate (52); The second power mechanism (6) drives the arc plate (52) to rotate back and forth relative to the transfer bin (51) to adjust the direction and flow rate of the hot nitrogen gas blown out from the opening (511).

6. The double-cone vacuum dryer according to claim 5, characterized in that The transfer bin (51) is cylindrical, and the arc-shaped plate (52) is in contact with the inner wall of the transfer bin (51).

7. The double-cone vacuum dryer according to claim 5, characterized in that A first guide plate (53) is provided on the upper edge of the opening (511), and a second guide plate (54) is provided on the arc-shaped plate (52). The first guide plate (53) and the second guide plate (54) are arranged in an eight-shaped configuration to guide the hot nitrogen to be blown out from between the first guide plate (53) and the second guide plate (54).

8. The double cone vacuum dryer according to claim 5, characterized in that: The second power mechanism (6) comprises: a rotating driving member (61); The rotation driving member (61) is connected to the arc plate (52) to drive the arc plate (52) to rotate.

9. The double cone vacuum dryer according to claim 1, characterized in that The first power mechanism (4) comprises: a belt-driven power source (41); The belt drive power source (41) is connected to the silo (1) to drive the silo (1) to rotate.

10. The double cone vacuum dryer according to claim 1, characterized in that: A jacket (13) is provided in the silo (1) to separate an inner cavity (11) and an outer cavity (12) in the silo (1).

11. A method for drying silver nitrate using the double cone vacuum dryer according to any one of claims 1 to 10, characterized in that: include: Silver nitrate wet material (7) is put into the inner cavity (11), the inner cavity (11) is evacuated and hot nitrogen is blown into the blowing adjustment mechanism (5), and a heat preservation source is circulated and pumped into the outer cavity (12), while driving the hopper (1) to rotate to dry the silver nitrate wet material (7) in the inner cavity (11); The arc plate (52) in the air blowing adjustment mechanism (5) is driven to rotate back and forth relative to the transfer bin (51) to adjust the direction and flow rate of the hot nitrogen gas blown out from the opening (511) on the transfer bin, and when the arc plate (52) rotates clockwise, the opening (511) is gradually closed and the flow rate of the nitrogen gas blown out from the opening (511) is gradually increased to blow away the silver nitrate wet material (7) that is turned upward under the action of centrifugal force.

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