Silver nitrate drying device and driving mechanism

Abstract

The utility model belongs to silver nitrate powder drying technical field, concretely relates to a silver nitrate drying device and drive mechanism, the device includes: drying box, its inside is provided with the tray, and the tray bottom surface one end is connected with the inner wall of drying box through the shaft, negative pressure mechanism is arranged in one side of drying box, wherein the vacuum pump in negative pressure mechanism is suitable for the air in drying box is extracted through vacuum pipe to make the negative pressure of drying box is formed when starting, rocker, one end of rocker is connected with the other end bearing of tray bottom surface, and drive mechanism is arranged in the upper end surface of drying box, and the drive rod in drive mechanism is connected with rocker, wherein the drive rod is suitable for when the pressure in drying box reduces, and the rocker is moved, and then the tray is driven around the shaft and shakes.

Description

Technical Field

[0001] This utility model belongs to the field of silver nitrate powder drying technology, specifically relating to silver nitrate drying device and driving mechanism. Background Technology

[0002] Silver nitrate, as an important chemical raw material, has strong hygroscopicity and easy oxidation. It is also prone to melting and agglomeration during heating. These physical properties place special requirements on the equipment during its drying process: the material needs to be turned over in a closed environment in a timely and uniform manner to break up the crust, improve heat transfer, ensure efficient removal of moisture, and avoid local overheating or sticking to the wall.

[0003] To meet the above process requirements, the industry currently relies on vacuum drying equipment for the drying of silver nitrate, and integrates an electronically controlled turning mechanism inside. This method usually involves setting up transmission components such as motors and reducers outside the drying chamber to drive the stirring paddle or turning rake inside the chamber to turn it periodically or continuously, in order to improve the uniformity of drying and replace traditional manual operation.

[0004] However, although electronically controlled material turning has achieved mechanical automation to a certain extent, it still has several inherent defects: it relies on transmission components such as motors and reducers, has a complex structure, consumes a lot of energy, and the electronic control system is easily damaged by water vapor precipitated from the wet silver nitrate material during long-term operation.

[0005] Therefore, a silver nitrate drying device and driving mechanism are designed to solve the technical problem that the existing electrically controlled material turning device is easily damaged by water vapor precipitated from the wet silver nitrate material during long-term operation.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one silver nitrate drying apparatus and driving mechanism.

[0008] In a first aspect, embodiments of this disclosure provide a silver nitrate drying apparatus, comprising: A drying oven, which has a material tray inside, and one end of the bottom surface of the material tray is connected to the inner wall of the drying oven through a rotating shaft; A negative pressure mechanism is located on one side of the drying oven; wherein The vacuum pump in the negative pressure mechanism is adapted to draw air from the drying chamber through the vacuum tube during startup so as to create a negative pressure inside the drying chamber. A rocker arm, one end of which is connected to a bearing at the other end of the bottom surface of the material tray; and A drive mechanism is disposed on the upper end face of the drying oven, and the drive rod in the drive mechanism is connected to the rocker arm; wherein The drive rod is adapted to move the rocker arm when the pressure inside the drying chamber decreases, thereby causing the material tray to sway around the rotating shaft.

[0009] In one optional implementation, the drive mechanism includes: A pressure chamber is located on the upper surface of the drying oven, and a filter element is provided on the outer wall of the pressure chamber; A pressure cylinder is disposed inside the pressure chamber, and the bottom end of the pressure cylinder penetrates through the drying chamber and is located inside the drying chamber; The drive rod is disposed inside the pressure cylinder, and a piston is sleeved on the outer wall of the drive rod; and A connecting pipe is provided on the outer wall of the pressure cylinder to connect the internal space of the pressure cylinder with the internal space of the pressure box.

[0010] In one optional embodiment, a telescopic rod is provided inside the pressure cylinder; wherein The top end of the telescopic rod is connected to the inner wall of the pressure box, and the bottom end of the telescopic rod is connected to the upper end face of the piston. A return spring is sleeved on the outside of the telescopic rod, and the top and bottom ends of the return spring are connected to the telescopic rod and the piston, respectively.

[0011] In one alternative implementation, the rocker arm includes: There are at least three connecting rods, and every two connecting rods are connected by bearings; among which The leftmost connecting rod is connected to the inner wall bearing of the drying chamber, and the rightmost connecting rod is connected to the material tray bearing.

[0012] In one optional embodiment, a heating jacket layer is provided on the outer wall of the drying oven; The heating jacket layer is equipped with a heating coil inside; The drying oven has an inlet on its outer wall, and the inlet is equipped with a sealing door; wherein The sealing door is slidably connected to the outer wall of the drying oven via a slide rail.

[0013] In one optional implementation, the negative pressure mechanism includes: A buffer tank is disposed on one side of the drying oven, and the buffer tank is connected to the vacuum pump via a pipeline; A cyclone separator is connected to the buffer tube via a pipeline; and The two ends of the vacuum tube are connected to the cyclone separator and the drying box, respectively.

[0014] Secondly, embodiments of this disclosure also provide a driving mechanism, including: A pressure chamber is installed on the upper surface of the drying oven, and a filter element is provided on the outer wall of the pressure chamber; A pressure cylinder is disposed inside the pressure chamber, and the bottom end of the pressure cylinder penetrates through the drying chamber and is located inside the drying chamber; A drive rod is disposed inside the pressure cylinder, and a piston is sleeved on the outer wall of the drive rod; and A connecting pipe is provided on the outer wall of the pressure cylinder to connect the internal space of the pressure cylinder with the internal space of the pressure box. In one optional embodiment, a telescopic rod is provided inside the pressure cylinder; wherein The top end of the telescopic rod is connected to the inner wall of the pressure box, and the bottom end of the telescopic rod is connected to the upper end face of the piston. A return spring is sleeved on the outside of the telescopic rod, and the top and bottom ends of the return spring are connected to the telescopic rod and the piston, respectively.

[0015] In one optional embodiment, the drying oven is provided with a rocker arm, which includes: There are at least three connecting rods, and every two connecting rods are connected by bearings; among which The leftmost connecting rod is connected to the inner wall bearing of the drying chamber, and the rightmost connecting rod is connected to the material tray bearing.

[0016] The beneficial effects of this invention are that, by setting up a negative pressure mechanism and a drive mechanism, the negative pressure mechanism intermittently extracts air from the drying chamber to create negative pressure inside the drying chamber. At the same time, the pressure difference between the inside and outside of the drying chamber causes the drive rod in the drive mechanism to move, which in turn drives the rocker arm inside the drying chamber to move. Finally, the rocker arm drives the material tray inside the drying chamber to swing back and forth around the bearing connection between the material tray and the inner wall of the drying chamber to achieve the effect of material turning. Compared with the existing technology that uses an electric control drive, the entire process of this device is based on pressure difference drive, eliminating the need for electric control components and thus avoiding the problem of water vapor erosion.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the planar connection of the negative pressure mechanism provided in the embodiments of this disclosure; Figure 2 This is a schematic diagram of the planar structure of the heating jacket layer provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of the internal structure of a drying oven provided in an embodiment of this disclosure.

[0021] In the picture: 1. Drying oven; 10. Heating jacket layer; 11. Heating coil; 12. Feed inlet; 120. Sealing door; 13. Material tray; 14. Rotating shaft; 2. Drive mechanism; 20. Pressure box; 21. Filter element; 22. Pressure cylinder; 220. Telescopic rod; 221. Return spring; 222. Piston; 223. Drive rod; 224. Connecting pipe; 225. Support rod; 23. Rocker arm; 230. Connecting rod; 3. Negative pressure mechanism; 30. Vacuum pump; 31. Buffer tank; 32. Cyclone separator; 33. Vacuum tube. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0024] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships 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 related listed items.

[0025] In this document, exemplary 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…” modify the entire list of elements when following a list of elements, rather than 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.

[0026] The terminology used herein is for the purpose of describing specific exemplary configurations only and is 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 stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude 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 construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0027] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., 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 superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0028] Research has revealed that current industry practices for drying silver nitrate largely rely on vacuum drying equipment, which integrates an electrically controlled turning mechanism. This method typically uses a motor and reducer installed outside the drying chamber to drive agitators or turning rakes within the chamber to periodically or continuously turn the material, aiming to improve drying uniformity and replace traditional manual operation. However, while electrically controlled turning achieves a degree of automation, it still suffers from several inherent drawbacks: it relies on motors and reducers, resulting in a complex structure, high energy consumption, and the electrical control system is susceptible to damage from moisture precipitated from the wet silver nitrate material during long-term operation.

[0029] Based on the above research, this disclosure provides a silver nitrate drying device and a driving mechanism. By setting up a negative pressure mechanism and a driving mechanism, the negative pressure mechanism intermittently extracts air from the drying chamber to create negative pressure inside the drying chamber. At the same time, the pressure difference between the inside and outside of the drying chamber causes the driving rod in the driving mechanism to move, thereby driving the rocker arm inside the drying chamber to move. Finally, the rocker arm drives the material tray inside the drying chamber to swing back and forth around the bearing connection between the material tray and the inner wall of the drying chamber to achieve the effect of turning the material.

[0030] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] In some embodiments, such as Figure 1 and Figure 2 As shown, the drying oven 1 adopts a vertical cylindrical structure design. The main body is made of corrosion-resistant stainless steel, and the wall thickness is sufficient to ensure the structural strength under vacuum conditions. The drying oven 1 is covered with a heating jacket layer 10. The heating jacket layer 10 is equipped with a heating coil 11 inside. The heating coil 11 is connected to an external air pumping device (not shown in the figure). Hot steam is pumped into the heating coil 11 through the external device. The steam temperature can be adjusted within a wide range. The temperature can be precisely controlled by adjusting the steam pressure. The snake-shaped heating coil 11 can ensure the uniformity of heating and avoid local overheating. A sealing door 120 is provided at the inlet 12 on the outer wall of the drying oven 1. The sealing door 120 adopts a horizontal sliding opening method, which facilitates the loading and unloading of silver nitrate. The door frame of the sealing door 120 is embedded with a high-temperature resistant sealing ring. The sealing ring is made of high and low temperature resistant rubber material, which can maintain good sealing performance over a wide temperature range. The sealing door 5 achieves airtight locking through a pneumatic locking assembly (not shown in the figure). The pneumatic locking assembly includes a pneumatic cylinder, a locking rod, and a wedge-shaped sealing block. When the pneumatic cylinder is activated, the locking rod pushes the wedge-shaped sealing block to press against the sealing surface, ensuring a complete seal between the sealing door 5 and the cavity (the activation of the locking assembly is existing technology, and its connection method and working principle with the sealing door will not be described in detail here).

[0034] In some embodiments, such as Figure 1 and Figure 3 As shown, when it is necessary to turn the silver nitrate inside the drying oven 1, the entire process is driven by pressure difference and does not require electrical control components, thus avoiding the problem of water vapor corrosion. The turning process begins with the start of vacuum pump 30. Vacuum pump 30 evacuates the inside of drying oven 1 through vacuum tube 33. When the pressure inside the drying oven 1 decreases, that is, the pressure below piston 222 in pressure cylinder 22 decreases. The space above piston 222 in pressure cylinder 22 is connected to the inside of pressure box 20 through connecting pipe 224. The inside of pressure box 20 is connected to the outside through filter element 21. The function of filter element 21 is to filter dust and moisture in the air and prevent contaminants from entering. As the pressure inside drying oven 1 decreases, while the pressure above piston 222 remains unchanged (maintaining atmospheric pressure), the negative pressure generated inside drying oven 1 drives piston 222 to slide down in pressure cylinder 22, and simultaneously drives drive rod 223 to slide down. Drive rod 223 is slidably connected to support rod 225. The function of support rod 225 is to ensure that the axis of drive rod 223 is always aligned with the pressure cylinder 222. The axial directions of the force cylinder 22 are collinear. As the drive rod 223 moves down, the bottom of the drive rod 223 is connected to the bearing of the leftmost connecting rod 230. As shown in the figure, one end of the leftmost connecting rod 230 is connected to the bearing of the inner wall of the drying chamber 1. At this time, as the drive rod 223 moves down, it pushes the leftmost connecting rod 230 to deflect around the bearing connection with the inner wall of the drying chamber 1, thereby driving the remaining connecting rods 230 to deflect. When the rightmost connecting rod 230 is driven to deflect, the rightmost connecting rod 230 drives the material tray 13 connected to its bearing to deflect. The rocker arm 23 is composed of at least three connecting rods 230. Every two connecting rods 230 are connected by bearings to form a series mechanism. This design amplifies the displacement and improves the turning efficiency, thereby causing the material tray 13 to deflect around the rotating shaft 14. The deflection of the material tray 13 causes the silver nitrate powder placed on it to roll along the inclined surface, fully exposing the new surface to be dried and breaking the crust phenomenon. When the vacuum pump 30 stops working, the pressure inside the drying chamber 1 gradually recovers. The piston 222, which is synchronized, is reduced by the negative pressure suction inside the drying chamber 1. At this time, the reset spring 221 retracts, pulling the piston 222 back to its original position. The drive rod 223 moves upward, and through the connecting rod 230, it drives the material tray 13 to deflect in the opposite direction. The deflection angle is symmetrical to when the drive rod 223 moves downward. This reciprocating motion is repeated many times, causing the material tray 13 to continuously deflect and shake. The tumbling amplitude is controllable, avoiding material splashing. It does not require external power and works only by pressure difference and mechanical elasticity, reducing energy consumption and maintenance costs.

[0035] As a feasible approach, the buffer tank 10 is placed between the vacuum pump 30 and the drying chamber 1. The volume of the buffer tank 10 is designed according to the system requirements, and its main function is to stabilize the system pressure and reduce the impact of pressure fluctuations on the material turning mechanism.

[0036] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0038] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0039] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A silver nitrate drying apparatus, characterized in that, include: A drying oven (1) is provided inside, and one end of the bottom surface of the material tray (13) is connected to the inner wall of the drying oven (1) through a rotating shaft (14); A negative pressure mechanism (3) is provided on one side of the drying oven (1); in The vacuum pump (30) in the negative pressure mechanism (3) is adapted to draw air from the drying chamber (1) through the vacuum tube (33) during startup so that a negative pressure is formed inside the drying chamber (1); Rocker arm (23), one end of which is connected to the other end of the bottom surface of the tray (13) by a bearing; and A drive mechanism (2) is disposed on the upper end face of the drying oven (1), and the drive rod (223) in the drive mechanism (2) is connected to the rocker arm (23); wherein The drive rod (223) is adapted to move the rocker arm (23) when the pressure inside the drying chamber (1) decreases, thereby causing the tray (13) to sway around the rotating shaft (14).

2. The silver nitrate drying apparatus as described in claim 1, characterized in that, The drive mechanism (2) includes: A pressure chamber (20) is provided on the upper end face of the drying chamber (1), and a filter element (21) is provided on the outer wall of the pressure chamber (20). A pressure cylinder (22) is disposed inside the pressure box (20), and the bottom end of the pressure cylinder (22) penetrates through the drying box (1) and is located inside the drying box (1); The drive rod (223) is disposed inside the pressure cylinder (22), and a piston (222) is sleeved on the outer wall of the drive rod (223); and A connecting pipe (224) is provided on the outer wall of the pressure cylinder (22) to connect the internal space of the pressure cylinder (22) with the internal space of the pressure box (20).

3. The silver nitrate drying apparatus as described in claim 2, characterized in that, The pressure cylinder (22) is internally provided with a telescopic rod (220); wherein The top end of the telescopic rod (220) is connected to the inner wall of the pressure box (20), and the bottom end of the telescopic rod (220) is connected to the upper end face of the piston (222). The telescopic rod (220) is fitted with a return spring (221), and the top and bottom ends of the return spring (221) are connected to the telescopic rod (220) and the piston (222), respectively.

4. The silver nitrate drying apparatus as described in claim 3, characterized in that, The rocker arm (23) includes: There are at least three connecting rods (230), and every two connecting rods (230) are connected by bearings; wherein The leftmost connecting rod (230) is connected to the inner wall bearing of the drying oven (1), and the rightmost connecting rod (230) is connected to the bearing of the material tray (13).

5. The silver nitrate drying apparatus as described in claim 1, characterized in that, A heating jacket layer (10) is fitted on the outer wall of the drying oven (1); The heating jacket layer (10) is provided with a heating coil (11) inside. The drying oven (1) has an inlet (12) on its outer wall, and a sealing door (120) is provided at the inlet (12); wherein The sealing door (120) is slidably connected to the outer wall of the drying oven (1) via a slide rail.

6. The silver nitrate drying apparatus as described in claim 1, characterized in that, The negative pressure mechanism (3) includes: A buffer tank (31) is disposed on one side of the drying oven (1), and the buffer tank (31) is connected to the vacuum pump (30) through a pipeline; Cyclone separator (32) is connected to the buffer tank (31) via a pipeline; and The two ends of the vacuum tube (33) are connected to the cyclone separator (32) and the drying box (1), respectively.

7. A driving mechanism, characterized in that, include: A pressure box (20) is set on the upper end face of the drying box (1), and a filter element (21) is provided on the outer wall of the pressure box (20). A pressure cylinder (22) is disposed inside the pressure box (20), and the bottom end of the pressure cylinder (22) penetrates through the drying box (1) and is located inside the drying box (1); A drive rod (223) is disposed inside the pressure cylinder (22), and a piston (222) is sleeved on the outer wall of the drive rod (223); and A connecting pipe (224) is provided on the outer wall of the pressure cylinder (22) to connect the internal space of the pressure cylinder (22) with the internal space of the pressure box (20).

8. The driving mechanism as described in claim 7, characterized in that, The pressure cylinder (22) is internally provided with a telescopic rod (220); wherein The top end of the telescopic rod (220) is connected to the inner wall of the pressure box (20), and the bottom end of the telescopic rod (220) is connected to the upper end face of the piston (222). The telescopic rod (220) is fitted with a return spring (221), and the top and bottom ends of the return spring (221) are connected to the telescopic rod (220) and the piston (222), respectively.

9. The driving mechanism as described in claim 8, characterized in that, The drying oven (1) is equipped with a rocker arm (23), which includes: There are at least three connecting rods (230), and every two connecting rods (230) are connected by bearings; wherein The leftmost connecting rod (230) is connected to the inner wall bearing of the drying oven (1), and the rightmost connecting rod (230) is connected to the material tray (13) bearing.

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