Device for recovering silver nitrate in silver nitrate production tail gas

Abstract

The utility model relates to the technical field of silver nitrate tail gas recovery, in particular to a device for recovering silver nitrate in silver nitrate production tail gas, which comprises a fixing frame with a concave structure, a gas inlet frame is fixedly arranged on the inner wall of one side, far away from an opening, of the fixing frame, and one side of the gas inlet frame extends to the outside of the fixing frame and is arranged in an opening structure. A plurality of exhaust screen plates are embedded in the side, away from the opening, of the air inlet frame at equal intervals, a double-shaft motor is arranged at the center of the front end face of the air inlet frame, and a rotating shaft at the rear end of the double-shaft motor extends into the air inlet frame and is provided with a fan. According to the device, the air inlet frame, the double-shaft motor, the fan and the exhaust screen plate are arranged firstly, so that tail gas is separated from silver nitrate impurities, and silver nitrate particles are recycled conveniently; and a cleaning mechanism is arranged and is matched with the double-shaft motor, the rotating disc and the abutting cylinder, intermittent exhaust of gas is achieved, meanwhile, intermittent cleaning of the exhaust screen plate is facilitated, smoothness of filter screen holes is kept, and the influence on the follow-up tail gas filtering effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of silver nitrate tail gas recovery, in particular to a device for recovering silver nitrate from tail gas in silver nitrate production. Background Art

[0002] Silver nitrate is a colorless crystal that is easily soluble in water. Pure silver nitrate is stable to light, but due to the insufficient purity of general products, its aqueous solution and solid are often stored in brown reagent bottles. Silver nitrate is often used in photographic emulsions, silver plating, mirror making, printing, medicine, hair dyeing, and the testing of chloride ions, bromide ions, and iodide ions.

[0003] During the production and processing of silver nitrate, a large amount of exhaust gas is generated, which often carries a small amount of silver nitrate particles. If the exhaust gas is directly discharged into the air, it will not only cause serious pollution to the environment, but also easily cause waste of silver nitrate, thereby reducing the efficiency of exhaust gas treatment.

[0004] In view of the technical defects in this aspect, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to first set an air intake frame, a dual-axis motor, a fan and an exhaust mesh plate to achieve separation of exhaust gas and silver nitrate impurities so as to recover the silver nitrate particles; and then set a cleaning mechanism, which cooperates with the dual-axis motor, the turntable and the cylinder to not only achieve intermittent discharge of gas, but also facilitate intermittent cleaning of the exhaust mesh plate, maintain the patency of the filter mesh holes, and reduce the impact on the subsequent exhaust gas filtration effect.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a device for recovering silver nitrate from tail gas produced by silver nitrate production, comprising a fixed frame with a concave structure, an air intake frame is fixedly arranged on the inner wall of a side of the fixed frame away from the opening, and one side of the air intake frame extends to the outside of the fixed frame and is arranged in an open structure, a plurality of groups of exhaust mesh plates are equidistantly embedded on the side of the air intake frame away from the opening, a dual-axis motor is arranged at the center of the front end surface of the air intake frame, and the rear end rotating shaft of the dual-axis motor extends to the interior of the air intake frame and is provided with a fan, a turntable is fixedly installed at the front end rotating shaft of the dual-axis motor, and a resistance cylinder is fixedly installed at the center of the front end surface of the turntable near the upper and lower ends, a filter plate is arranged near the bottom position inside the air intake frame, and an inclined material guide plate is arranged at the bottom end inside the air intake frame, and a cleaning mechanism is arranged at one side of the front end surface of the air intake frame.

[0007] Furthermore, an exhaust frame is sleeved on one side of the air intake frame inside the fixed frame, and the upper and lower ends of the exhaust frame are slidably connected to the sliding grooves opened on the upper and lower inner walls of the fixed frame respectively, and an exhaust pipe is arranged at the center of one side of the exhaust frame away from the air intake frame.

[0008] Furthermore, the cleaning mechanism includes a rack, and the rack is vertically movably installed on one side of the front end of the air intake frame. The front end surface of the air intake frame is located at the upper and lower ends of the two sides of the rack, and a limiting gear and a limiting disc are respectively arranged through a rotating shaft.

[0009] Furthermore, the two limit gears on the same side are respectively meshed with the teeth on the side of the rack, a vertical groove is opened at the center of the rack, and a sliding rod is slidably arranged at the bottom inside the vertical groove, the rear end of the sliding rod is fixedly connected to the surface of the air intake frame, and a spring damping shock absorber is arranged on the inner wall of the top of the air intake frame, and the bottom of the spring damping shock absorber is against the top of the sliding rod.

[0010] Furthermore, a support rod is fixedly installed at the center of the rack on the same side of the limiting disc, and a cross bar is fixedly installed at the center of the other side of the rack, and a vertical plate is fixedly installed at one end of the cross bar away from the rack.

[0011] Furthermore, the vertical plate is attached to the exhaust mesh surface of the air intake frame and is staggered, and a plurality of groups of empty grooves overlapping with the exhaust mesh are equidistantly arranged inside the vertical plate. Cleaning cotton blocks matching the exhaust mesh are arranged on one side of the vertical plate close to the exhaust mesh and between two adjacent groups of empty grooves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with an air intake frame, a dual-axis motor, a fan and an exhaust mesh plate. The air intake frame introduces the exhaust gas into the air intake frame through the fan. After the exhaust gas is filtered by the exhaust mesh plate, the gas is discharged outward, and the impurity particles of silver nitrate carried therein are blocked inside the air intake frame, thereby realizing the separation of the exhaust gas and the silver nitrate impurities, so as to recover the silver nitrate particles;

[0014] 2. The utility model is provided with a cleaning mechanism, which cooperates with a dual-axis motor, a turntable and a resistance cylinder. The dual-axis motor drives the turntable to rotate, and forces the resistance cylinder to press the resistance rod and force the rack downward, thereby the vertical plate moves downward, and the empty slot overlaps with the exhaust mesh plate, and the exhaust gas filtered inside the air intake frame is discharged in sequence; and the resistance cylinder passes over the resistance rod, and under the rebound force of the spring damping shock absorber, the rack and the vertical plate return to their positions upward, and the cleaning cotton block overlaps with the corresponding exhaust mesh plate upward, and rubs and scratches the particles attached to the mesh holes of the exhaust mesh plate to speed up the removal of impurity particles on the mesh surface, and repeats this process, which not only realizes the intermittent discharge of gas, but also facilitates the intermittent cleaning of the exhaust mesh plate, keeps the filter mesh holes unobstructed, and reduces the impact on the subsequent exhaust gas filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side view of the air intake frame of the utility model;

[0018] Figure 3 It is a cross-sectional view of the air intake frame of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the combination of the air intake frame and the cleaning mechanism of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the vertical plate of the utility model.

[0021] In the figure: 1. fixed frame; 2. air intake frame; 201. exhaust mesh plate; 3. dual-axis motor; 4. fan; 5. turntable; 6. push tube; 7. filter plate; 8. guide plate; 9. cleaning mechanism; 91. rack; 92. limit gear; 93. limit disc; 94. vertical slot; 95. slide bar; 96. spring damping shock absorber; 97. push rod; 98. cross bar; 99. vertical plate; 910. empty slot; 911. cleaning cotton block; 10. exhaust frame; 11. slide slot; 12. exhaust pipe. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] See also Figure 1 - Figure 5 As shown, a silver nitrate recovery device for tail gas from silver nitrate production comprises a fixed frame 1 of a concave structure, an air intake frame 2 is fixedly arranged at the inner wall of the fixed frame 1 away from the opening, and one side of the air intake frame 2 extends to the outside of the fixed frame 1 and is arranged in an open structure, a plurality of groups of exhaust mesh plates 201 are embedded and arranged at equal distances on the side of the air intake frame 2 away from the opening, a double-axis motor 3 is arranged at the center of the front end face of the air intake frame 2, and the rear end rotating shaft of the double-axis motor 3 extends to the inside of the air intake frame 2 and is provided with a fan 4, a turntable 5 is fixedly installed at the front end rotating shaft of the double-axis motor 3, and a stopper 6 is fixedly installed at the center of the front end face of the turntable 5 near the upper and lower ends, a filter plate 7 is arranged near the bottom position inside the air intake frame 2, and an inclined material guide plate 8 is arranged at the bottom end inside the air intake frame 2;

[0025] First, the exhaust gas is passed into the air intake frame 2, and then the dual-axis motor 3 is started, which drives the fan 4 and the turntable 5 to rotate simultaneously. When the fan 4 rotates, the wind force generated can accelerate the exhaust gas to enter the air intake frame 2, and the exhaust gas is filtered through the air-permeable mesh ports of the exhaust mesh plates 201 on the other side of the air intake frame 2 and discharged outwardly. The silver nitrate particles carried in the exhaust gas are blocked by the filter holes in the air intake frame 2 and fall downward to the filter plate 7. The particles use the mesh holes of the filter plate 7 to settle to the guide plate 8, and are finally discharged to the outside of the air intake frame 2 through the inclined guide plate 8. The setting of the filter plate 7 reduces the situation where the filtered and settled silver nitrate particles are lifted up again by the fan 4, thereby realizing the rapid separation and recovery of the silver nitrate in the exhaust gas.

[0026] An exhaust frame 10 is sleeved on one side of the air intake frame 2 inside the fixed frame 1, and the upper and lower ends of the exhaust frame 10 are slidably connected to the slide grooves 11 opened on the upper and lower inner walls of the fixed frame 1. An exhaust pipe 12 is provided at the center of the side of the exhaust frame 10 away from the air intake frame 2. The filtered exhaust gas flows into the exhaust frame 10 and is finally discharged to the outside through the exhaust pipe 12.

[0027] Embodiment 2:

[0028] See also Figure 2 , Figure 4 - Figure 5 As shown, a cleaning mechanism 9 is provided at one side of the front end surface of the air intake frame 2, and the cleaning mechanism 9 includes a rack 91, and the rack 91 is vertically movably installed at one side of the front end of the air intake frame 2. The upper and lower ends of the front end surface of the air intake frame 2 on both sides of the rack 91 are respectively provided with a limit gear 92 and a limit disc 93 through a rotating shaft. The two sets of limit gears 92 on the same side are respectively meshed with the teeth on the side of the rack 91. A vertical groove 94 is provided at the center of the rack 91, and a slide bar 95 is slidably provided at the bottom of the vertical groove 94. The rear end of the slide bar 95 is fixedly connected to the surface of the air intake frame 2, and a spring damping shock absorber 96 is provided on the top inner wall of the air intake frame 2. The bottom of the spring damper 96 is against the top of the slide bar 95, the rack 91 is fixedly installed with a butt rod 97 at the center of the same side of the limiting disc 93, and a cross bar 98 is fixedly installed at the center of the other side of the rack 91, and a vertical plate 99 is fixedly installed at the end of the cross bar 98 away from the rack 91, and the vertical plate 99 is attached to the exhaust mesh plate 201 of the air intake frame 2 and is staggered, and a plurality of groups of empty slots 910 overlapping with the exhaust mesh plate 201 are equidistantly arranged inside the vertical plate 99, and a cleaning cotton block 911 adapted to the exhaust mesh plate 201 is arranged on one side of the vertical plate 99 close to the exhaust mesh plate 201 and between two adjacent groups of empty slots 910;

[0029] As the turntable 5 rotates, the two groups of cylinders 6 are forced to make circular motions. When one group of cylinders 6 rotates to a position close to the push rod 97, the cylinders 6 press the push rod 97 downwards and pull the rack 91 and the vertical plate 99 to move synchronously. The rack 91 moves intermittently along the limit gear 92 and the limit disc 93, and the rack 91 meshes with the limit gear 92 to force the rack 91 to transmit at a uniform speed. At the same time, the slide bar 95 and the vertical slot 94 move relative to each other, so that the spring damping shock absorber 96 is gradually compressed, and the vertical plate 99 moves close to the side wall of the air intake frame 2 until the empty slot 910 coincides with the exhaust mesh plate 201, so that the exhaust gas filtered inside the air intake frame 2 can be discharged according to the air intake frame 2. The air is discharged for the second time, and when the push tube 6 passes over the push rod 97, the push rod 97 and the rack 91 stop moving downward, and under the rebound force of the spring damping shock absorber 96, the rack 91 is driven to reset upward, thereby the empty slot 910 is misaligned with the exhaust mesh plate 201 and the exhaust is stopped, and the cleaning cotton block 911 is upwardly overlapped with the corresponding exhaust mesh plate 201, and rubs and scratches the particles attached to the mesh holes of the exhaust mesh plate 201, thereby accelerating the removal of foreign particles on the mesh surface, and repeating this process not only realizes the intermittent discharge of gas, but also facilitates the intermittent cleaning of the exhaust mesh plate 201, keeps the filter mesh holes unobstructed, and reduces the impact on the subsequent exhaust gas filtration effect.

[0030] Working principle:

[0031] When the utility model is in use, the exhaust gas is first introduced into the air intake frame 2, and then the dual-axis motor 3 is started, which drives the fan 4 and the turntable 5 to rotate simultaneously. When the fan 4 rotates, the wind force generated can accelerate the exhaust gas to enter the air intake frame 2, and the exhaust gas is filtered through the air permeable mesh openings of the exhaust mesh plates 201 on the other side of the air intake frame 2 and discharged outwardly. The silver nitrate particles carried in the exhaust gas are blocked by the filter holes in the air intake frame 2 and fall downward to the filter plate 7. The particles use the mesh holes of the filter plate 7 to settle to the guide plate 8 and are discharged to the outside of the air intake frame 2 through the inclined guide plate 8.

[0032] As the turntable 5 rotates, the two groups of cylinders 6 are forced to make circular motion. When one group of cylinders 6 rotates to a position close to the push rod 97, the cylinders 6 press the push rod 97 downward and pull the rack 91 and the vertical plate 99 to move synchronously. The rack 91 moves intermittently along the limit gear 92 and the limit disc 93, and the rack 91 meshes with the limit gear 92 to force the rack 91 to transmit at a uniform speed. At the same time, the slide bar 95 and the vertical slot 94 move relative to each other, so that the spring damping shock absorber 96 is gradually compressed, and the vertical plate 99 moves close to the side wall of the air intake frame 2 until the empty slot 910 overlaps with the exhaust mesh plate 201, so that the exhaust gas filtered inside the air intake frame 2 can be discharged in sequence;

[0033] When the push tube 6 passes over the push rod 97, the push rod 97 and the rack 91 stop moving downward, and under the rebound force of the spring damping shock absorber 96, the rack 91 is driven to reset upward, so that the empty slot 910 and the exhaust mesh plate 201 are misaligned and exhaust stops, and the cleaning cotton block 911 is upwardly overlapped with the corresponding exhaust mesh plate 201, and rubs and scrapes the particles attached to the mesh of the exhaust mesh plate 201;

[0034] Finally, the filtered exhaust gas is collected into the exhaust frame 10 and discharged to the outside through the exhaust pipe 12 .

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for recovering silver nitrate from tail gas in silver nitrate production, characterized in that: The invention comprises a fixed frame (1) of a concave structure, an air intake frame (2) being fixedly arranged on the inner wall of a side of the fixed frame (1) away from an opening, and one side of the air intake frame (2) extending to the outside of the fixed frame (1) and being arranged in an open structure, a plurality of groups of exhaust mesh plates (201) being equidistantly embedded in the side of the air intake frame (2) away from the opening, a double-axis motor (3) being arranged at the center of the front end face of the air intake frame (2), and the rear end rotating shaft of the double-axis motor (3) extending to the inside of the air intake frame (2) and being arranged with a fan (4), a turntable (5) being fixedly installed at the front end rotating shaft of the double-axis motor (3), and a stopper (6) being fixedly installed at the center of the front end face of the turntable (5) near the upper and lower ends, a filter plate (7) being arranged near the bottom of the inside of the air intake frame (2), and an inclined material guide plate (8) being arranged at the bottom of the inside of the air intake frame (2), and a cleaning mechanism (9) being arranged at one side of the front end face of the air intake frame (2).

2. A device for recovering silver nitrate from tail gas produced by silver nitrate production according to claim 1, characterized in that: An exhaust frame (10) is sleeved and arranged inside the fixed frame (1) on one side of the air intake frame (2), and the upper and lower ends of the exhaust frame (10) are respectively slidably connected to sliding grooves (11) provided on the upper and lower inner walls of the fixed frame (1), and an exhaust pipe (12) is arranged at the center of a side of the exhaust frame (10) away from the air intake frame (2).

3. A device for recovering silver nitrate from tail gas produced by silver nitrate production according to claim 1, characterized in that: The cleaning mechanism (9) comprises a rack (91), and the rack (91) is movably mounted vertically on one side of the front end of the air intake frame (2), and the front end surface of the air intake frame (2) is located at the upper and lower ends of the two side surfaces of the rack (91), and a limiting gear (92) and a limiting disc (93) are respectively arranged through a rotating shaft.

4. A device for recovering silver nitrate from tail gas in silver nitrate production according to claim 3, characterized in that: The two groups of limit gears (92) on the same side are respectively meshed with the teeth on the side of the rack (91), a vertical groove (94) is opened at the center of the rack (91), and a slide bar (95) is slidably arranged at the bottom inside the vertical groove (94), the rear end of the slide bar (95) is fixedly connected to the surface of the air intake frame (2), and a spring damping shock absorber (96) is arranged on the inner wall of the top of the air intake frame (2), and the bottom of the spring damping shock absorber (96) is against the top of the slide bar (95).

5. A device for recovering silver nitrate from tail gas in silver nitrate production according to claim 4, characterized in that: A stop rod (97) is fixedly mounted at the center of the rack (91) on the same side as the limiting disc (93), and a cross bar (98) is fixedly mounted at the center of the other side of the rack (91). A vertical plate (99) is fixedly mounted at one end of the cross bar (98) away from the rack (91).

6. A device for recovering silver nitrate from tail gas in silver nitrate production according to claim 5, characterized in that: The vertical plate (99) is attached to the exhaust mesh plate (201) of the air intake frame (2) and is staggered, and a plurality of groups of empty slots (910) overlapping with the exhaust mesh plate (201) are arranged at equal distances inside the vertical plate (99), and a cleaning cotton block (911) adapted to the exhaust mesh plate (201) is arranged on a side surface of the vertical plate (99) close to the exhaust mesh plate (201) and between two adjacent groups of empty slots (910).

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