Anti-wall-adhesion reaction kettle device for APT smelting

Abstract

The invention discloses an anti-wall-adhesion reaction kettle device for APT smelting, and relates to the field of anti-wall-adhesion reaction kettles for APT smelting, the anti-wall-adhesion reaction kettle device comprises a reaction kettle body, the top of the reaction kettle body is detachably connected with an end cover, a wall scraping mechanism is arranged outside the end cover, and the wall scraping mechanism comprises a fixing plate; the fixing plate is fixedly connected to the upper surface of the end cover, a first servo motor is fixedly connected to the upper surface of the fixing plate, a first belt wheel is fixedly connected to the output end of the first servo motor, a belt is in transmission connection with the exterior of the first belt wheel, and a second belt wheel is in transmission connection with the inner side of the end, away from the first belt wheel, of the belt; the upper surface of the end cover is rotationally connected with a rotating disc, the kettle bottom, the kettle shoulder, the lower surface and the cylindrical surface of the end cover can be covered through the wall scraping mechanism, the cleaning mechanism and the stirring scraper mechanism which are matched with the sectional flexible scraper, and the problem of incomplete coverage of a traditional scraper is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of APT smelting anti-wall reaction kettle, and particularly relates to an APT smelting anti-wall reaction kettle device. BACKGROUND

[0002] Ammonium paratungstate is a key intermediate product in the tungsten smelting industry, and its purity and physical properties directly affect the quality of subsequent tungsten powder, tungsten carbide and final hard alloy products. In the production process of APT, ion exchange, evaporation crystallization and other key processes are usually involved, and the reaction kettle (or crystallization kettle) is the core equipment of these processes.

[0003] In the existing technology, when cleaning the inner wall of the APT smelting anti-wall reaction kettle, the stirring frame is driven to rotate by a motor, and a scraper is usually installed outside the stirring frame to clean the inner wall to prevent crystallization inside. However, in actual use, the traditional scraper is single circumferential rotation, which cannot cover the non-cylindrical surface area such as the kettle bottom and the kettle shoulder, and the rigid scraper is easy to cause large gap due to kettle wall wear or scratch the coated kettle wall. In addition, stirring, scraping and cleaning are usually operated independently, which may cause disconnection such as the scraper not being timely removed when the stirring pushes the material to the kettle wall, and the cleaning liquid cannot penetrate the wall layer.

[0004] Therefore, it is necessary to provide an APT smelting anti-wall reaction kettle device to solve the above problems. SUMMARY

[0005] The present application aims to provide an APT smelting anti-wall reaction kettle device to solve the problems of limited coverage of the traditional reaction kettle scraper (unable to cover the non-cylindrical surface area such as the kettle bottom and the kettle shoulder), easy wear or scratch of the rigid scraper, and disconnection of the stirring, scraping and cleaning processes.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an APT smelting anti-wall reaction kettle device, comprising a reaction kettle body, a top of the reaction kettle body is detachably connected with an end cover, an outer part of the end cover is provided with a wall scraping mechanism;

[0007] The wall scraping mechanism comprises a fixed plate fixedly connected to the upper surface of the end cover, a first servo motor fixedly connected to the upper surface of the fixed plate, a No. 1 pulley fixedly connected to the output end of the first servo motor, a belt drivingly connected to the outer portion of the No. 1 pulley, a No. 2 pulley drivingly connected to the inner side of the end of the belt away from the No. 1 pulley, a rotating disc rotatably connected to the upper surface of the end cover, the No. 2 pulley inner ring and the rotating disc outer ring being fixedly connected, a limiting tube fixedly connected to the upper surface of the rotating disc, a limiting rod slidingly connected to the tube of the limiting tube, a connecting disc fixedly connected to the upper surface of the limiting rod, a supporting plate fixedly connected to the upper surface of the end cover, a second servo motor fixedly connected to the upper surface of the supporting plate, a trapezoidal screw fixedly connected to the output end of the second servo motor, a threaded sleeve threadedly connected to the outer portion of the trapezoidal screw, a pull disc tube fixedly connected to the lower end surface of the threaded sleeve, and an expansion sleeve fixedly connected between the upper surface of the pull disc tube and the lower surface of the supporting plate.

[0008] Preferably, the top of the end cover is provided with a cleaning mechanism, the cleaning mechanism comprising a connecting plate fixedly connected to the upper surface of the end cover, a water inlet pipe fixedly connected to the inner side of the connecting plate, a rotating tube sleeved to the outer portion of the water inlet pipe, a plurality of inclined spray holes formed in the outer wall of the rotating tube, and the plurality of inclined spray holes being uniformly arranged along the axis of the rotating tube.

[0009] Preferably, the inner ring of the connecting disc and the outer ring of the rotating tube are fixedly connected, the upper end surface of the rotating tube is provided with a first clamping groove, and the inner portion of the first clamping groove is rotatably connected to the outer ring of the pull disc tube.

[0010] Preferably, the outer portion of the rotating tube is provided with a stirring scraper mechanism, the stirring scraper mechanism comprising a mounting frame fixedly connected to the outer portion of the rotating tube, a flexible scraper detachably mounted to the inner side of the outer wall of the mounting frame, and a stirring rod fixedly connected between the rotating tube and the mounting frame.

[0011] Preferably, the lower end surface of the reaction kettle body is fixedly connected with a discharge valve.

[0012] Preferably, the upper surface of the end cover is fixedly connected with a feed pipe, and the feed pipe is communicated with the inner cavity of the reaction kettle body.

[0013] Preferably, the upper surface of the end cover is fixedly connected with a liquid outlet pipe, and the liquid outlet pipe is communicated with the inner cavity of the reaction kettle body.

[0014] The technical effects and advantages of the present application are as follows.

[0015] 1. The wall scraping mechanism, cleaning mechanism and stirring scraper mechanism are arranged in the present application, which cooperates with the segmented flexible scraper to cover the bottom, shoulder, lower surface of the end cover and cylindrical surface of the kettle, solving the problem of incomplete coverage of the traditional scraper;

[0016] 2. In the present application, the flexible scraper is used to avoid rigid contact, and the detachable design facilitates replacement, while preventing kettle wall wear or coating scratches;

[0017] 3. In the present application, stirring, wall scraping and flushing actions are performed synchronously, avoiding the problems of crystallization residue or disconnection caused by traditional independent operation, and improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an appearance structure schematic diagram of the APT smelting anti-wall reaction kettle device of the present application.

[0019] Figure 2 It is a front view structure schematic diagram of the APT smelting anti-wall reaction kettle device of the present application.

[0020] Figure 3 It is an enlarged structure schematic diagram of A in the present application. Figure 2

[0021] Figure 4 It is an enlarged structure schematic diagram of B in the present application. Figure 2

[0022] Figure 5 It is a right side view structure schematic diagram of the APT smelting anti-wall reaction kettle device of the present application.

[0023] Figure 6 It is an enlarged structure schematic diagram of C in the present application. Figure 5

[0024] Figure 7 It is an internal structure schematic diagram of the reaction kettle device of the present application.

[0025] In the figure: 1, reaction kettle body; 2, end cover; 3, discharge valve; 4, wall scraping mechanism; 5, cleaning mechanism; 6, feed pipe; 7, liquid outlet pipe; 8, stirring scraper mechanism; 41, fixed plate; 42, first servo motor; 43, No. 1 pulley; 44, belt; 45, No. 2 pulley; 46, support plate; 47, second servo motor; 48, trapezoidal screw; 49, threaded sleeve; 410, telescopic sleeve; 411, pull plate pipe; 412, connecting plate; 413, limiting rod; 414, limiting pipe; 415, rotating disc; 51, connecting plate; 52, rotating pipe; 53, inclined jet; 54, water inlet pipe; 81, mounting frame; 82, flexible scraper; 83, stirring rod. DETAILED DESCRIPTION

[0026] The present application provides​​​Figures 1-7 The APT smelting anti-wall reaction kettle device shown is designed to solve the problems of limited coverage of traditional reaction kettle scrapers (unable to cover non-cylindrical surface areas such as the kettle bottom and kettle shoulder), easy wear or scratching of the kettle wall by rigid scrapers, and disconnection of the stirring-wall-cleaning process, to achieve the effects of full-area anti-wall, kettle wall protection, and multi-process coordinated operation. The specific implementation is as follows:

[0027] The core of the APT smelting anti-wall reaction kettle device includes a reaction kettle body 1, a detachable end cover 2, a wall scraping mechanism 4, a cleaning mechanism 5, a stirring and scraping mechanism 8, and auxiliary components, a discharge valve 3, a feed pipe 6, and a liquid outlet pipe 7. Each component is connected mechanically to form a coordinated operation system.

[0028] The reaction kettle body 1 is the core container for APT ion exchange and evaporation crystallization. The fixed discharge valve 3 at the lower end is used to control the discharge of finished products or waste materials, ensuring that the materials can be quickly discharged after the reaction is completed.

[0029] The end cover 2 is detachably connected to the top of the kettle body by bolts and other structures, which facilitates maintenance of the kettle in the later stage and ensures the sealing during the reaction. The fixed feed pipe 6 and liquid outlet pipe 7 at the top of the end cover 2 realize the input of raw materials and the discharge of reaction waste liquid / vapor, respectively, meeting the material circulation requirements of the smelting process.

[0030] The wall scraping mechanism 4 is installed on the upper surface of the end cover 2 and driven by power transmission to drive the stirring and scraping mechanism 8 to realize "rotation + lifting" action. The cleaning mechanism 5 is integrated with the rotating pipe 52 and operates synchronously with the stirring and scraping mechanism 8 to realize "wall scraping + flushing" coordination. The stirring and scraping mechanism 8 serves as an execution component and directly acts on the kettle wall and the materials in the kettle, simultaneously completing the functions of stirring and wall scraping.

[0031] The wall scraping mechanism 4 is composed of a fixed plate 41, a first servo motor 42, a first pulley 43, a belt 44, a second pulley 45, a rotating disc 415, a limiting tube 414, a limiting rod 413, a connecting disc 412, a support plate 46, a second servo motor 47, a trapezoidal screw 48, a threaded sleeve 49, a pull disc tube 411, and an expansion sleeve 410. The first servo motor 42 is fixed on the fixed plate 41, and after being started, its output end drives the first pulley 43 to rotate, and through the transmission of the belt 44, power is transmitted to the second pulley 45. Since the inner ring of the second pulley 45 is fixedly connected with the outer ring of the rotating disc 415, and the rotating disc 415 is rotationally connected to the upper surface of the end cover 2, the second pulley 45 can drive the rotating disc 415 to rotate synchronously. At the same time, the limiting tube 414 fixed on the upper surface of the rotating disc 415 is in sliding fit with the limiting rod 413, the upper end of the limiting rod 413 is fixed with the connecting disc 412, and the inner ring of the connecting disc 412 is fixed with the outer ring of the rotating tube 52 of the cleaning mechanism 5. Finally, the rotating power of the rotating disc 415 is transmitted to the rotating tube 52 through the "limiting tube-limiting rod-connecting disc", which provides power for the rotation of the stirring and scraping plate mechanism 8, and ensures that the scraping plate can move along the circumferential direction of the kettle wall, and preliminarily covers the cylindrical surface area.

[0032] The second servo motor 47 is fixed on the support plate 46, and after being started, its output end drives the trapezoidal screw 48 to rotate. Since the trapezoidal screw 48 is in threaded fit with the threaded sleeve 49, and the lower end of the threaded sleeve 49 is fixed with the pull disc tube 411, and the pull disc tube 411 is rotationally connected with the outer ring of the rotating tube 52 through the first clamping groove, the rotation of the trapezoidal screw 48 will be converted into the up-down linear motion of the threaded sleeve 49, and then the rotating tube 52 is driven to move up and down along the axial direction through the pull disc tube 411. During this period, the expansion sleeve 410 fixed between the support plate 46 and the pull disc tube 411 plays a guiding role in the lifting direction of the pull disc tube 411. The lifting of the rotating tube 52 drives the stirring and scraping plate mechanism 8 to move up and down synchronously, and cooperates with the rotating action, so that the scraping plate can cover the non-cylindrical surface area such as the arc surface of the kettle bottom, the transition area of the kettle shoulder, and the lower surface of the end cover 2, thereby solving the problem of incomplete coverage of the traditional scraping plate.

[0033] The cleaning mechanism 5 is composed of a connecting plate 51, a rotating pipe 52, an inclined spray hole 53 and a water inlet pipe 54. The connecting plate 51 is fixed on the upper surface of the end cover 2. The water inlet pipe 54 penetrates through the connecting plate 51 and is connected with an external high-pressure water source. The rotating pipe 52 is sleeved on the outside of the water inlet pipe 54 and can rotate freely with a sealing ring arranged therebetween to ensure that the water flow does not leak. A plurality of inclined spray holes 53 are arranged on the outer wall of the rotating pipe 52 and are uniformly arranged along the axis. The direction of the spray holes is inclined to the kettle wall. When the high-pressure water enters the rotating pipe 52 through the water inlet pipe 54, it is sprayed from the inclined spray holes 53. On the one hand, the high-pressure water flow can directly wash the crystalline layer on the kettle wall. On the other hand, the reaction force of the water flow can assist the rotation of the rotating pipe 52, thereby reducing the load of the first servo motor 42. Since the rotating pipe 52 is fixedly connected with the stirring and scraping blade mechanism 8, the washing action is completely synchronized with the wall scraping and stirring action. After the scraping blade scrapes part of the crystalline layer, high-pressure water can immediately penetrate the remaining crystalline layer and wash it clean, thereby avoiding the crystalline residue problem caused by the traditional "scraping first and then washing".

[0034] The stirring and scraping blade mechanism 8 is composed of a mounting frame 81, a flexible scraping blade 82 and a stirring rod 83. The mounting frame 81 is welded or bolted to the outside of the rotating pipe 52. The shape of the mounting frame 81 is adapted to the inner wall profile of the kettle body 1 and includes a cylindrical section, an arc-shaped section on the kettle bottom and a shoulder transition section. The flexible scraping blade 82 is made of acid and alkali resistant rubber or high molecular elastic material and is detachably mounted on the inner side of the outer wall of the mounting frame 81 by bolts. The flexible scraping blade 82 is divided into three sections. The first section corresponds to the lower surface of the end cover 2 and is not in contact with the end cover 2 in the initial state. When the rotating pipe 52 rises to the highest position, the first section of the scraping blade is in contact with the lower surface of the end cover 2 to clean the crystalline layer that may be attached to the inner side of the end cover 2. The second section corresponds to the left and right inner wall cylindrical surfaces of the kettle body 1 and is always in slight contact with the kettle wall to avoid the damage of the kettle wall or the scratching of the coating caused by rigid collision. The third section corresponds to the arc-shaped surface of the kettle bottom and is in contact with the kettle bottom profile. The third section can rise and fall with the rotating pipe 52 and completely covers the kettle bottom area, thereby solving the problem that the traditional scraping blade cannot reach the kettle bottom. The stirring rod 83 is uniformly distributed between the rotating pipe 52 and the mounting frame 81. When the rotating pipe 52 rotates, the stirring rod 83 can drive the materials in the kettle to be fully mixed, thereby avoiding the local overheating or uneven concentration of the materials, preventing the materials from accumulating on the kettle wall and reducing the risk of crystalline wall from the source.

[0035] In use, the APT solution after ion exchange is input into the kettle body 1 through the feed pipe 6. The heating system of the reaction kettle is started to start the evaporation and crystallization process, and the first servo motor 42 and the second servo motor 47 are started at the same time.

[0036] The first servo motor 42 drives the rotating tube 52 to rotate via a pulley assembly, which in turn drives the mounting frame 81, flexible scraper 82, and stirring rod 83 to rotate synchronously. The stirring rod 83 stirs the materials to ensure uniform solution concentration. The cylindrical section of the flexible scraper 82 adheres to the vessel wall to scrape away crystals on the cylindrical surface, while the arc-shaped section adheres to the bottom of the vessel to clean crystals at the bottom. The second servo motor 47 drives the rotating tube 52 to slowly rise and fall via a trapezoidal screw 48. When descending, the bottom section of the flexible scraper 82 penetrates deep into the vessel bottom, completely covering the arc-shaped area. When rising, the corresponding scraper section of the end cap 2 adheres to the lower surface of the end cap 2 to clean the end cap. 2. Crystallization: Simultaneously turn on the external high-pressure water source. High-pressure water is sprayed out from the inclined nozzle 53 through the water inlet pipe 54 and the rotating pipe 52 to rinse the reactor wall and scraper, and flush the scraped crystal particles into the material to avoid the accumulation of the wall layer. After crystallization is completed, turn off the heating system, servo motor and high-pressure water source, and open the discharge valve 3. The APT crystal material in the reactor is discharged through the discharge valve 3, completing one smelting process. If continuous operation is required, new raw materials can be directly input through the feed pipe 6 and the above steps can be repeated. If maintenance is required, the end cover 2 can be removed to replace the worn flexible scraper 82 or clean the transmission components.

Claims

1. A reactor device for preventing wall fouling in APT smelting, comprising a reactor body (1), characterized in that: The top of the reactor body (1) is detachably connected to an end cover (2), and a wall scraping mechanism (4) is provided on the outside of the end cover (2); The scraping mechanism (4) includes a fixing plate (41), which is fixedly connected to the upper surface of the end cover (2). A first servo motor (42) is fixedly connected to the upper surface of the fixing plate (41). A first pulley (43) is fixedly connected to the output end of the first servo motor (42). A belt (44) is connected to the outside of the first pulley (43). A second pulley (45) is connected to the inner side of the end of the belt (44) away from the first pulley (43). A rotating disk (415) is rotatably connected to the upper surface of the end cover (2). The inner ring of the second pulley (45) is fixedly connected to the outer ring of the rotating disk (415). A limit tube is fixedly connected to the upper surface of the rotating disk (415). (414), a limiting rod (413) is slidably connected inside the limiting tube (414), a connecting plate (412) is fixedly connected to the upper surface of the limiting rod (413), a support plate (46) is fixedly connected to the upper surface of the end cap (2), a second servo motor (47) is fixedly connected to the upper surface of the support plate (46), a trapezoidal screw (48) is fixedly connected to the output end of the second servo motor (47), a threaded sleeve (49) is threaded to the outside of the trapezoidal screw (48), a pull coil tube (411) is fixedly connected to the lower end face of the threaded sleeve (49), and a telescopic sleeve (410) is fixedly connected between the upper surface of the pull coil tube (411) and the lower surface of the support plate (46).

2. The anti-fouling reactor device for APT smelting according to claim 1, characterized in that: The top of the end cap (2) is provided with a cleaning mechanism (5). The cleaning mechanism (5) includes a connecting plate (51). The connecting plate (51) is fixedly connected to the upper surface of the end cap (2). A water inlet pipe (54) is fixedly connected to the inner side of the connecting plate (51). A rotating pipe (52) is sleeved on the outside of the water inlet pipe (54). An inclined spray hole (53) is opened on the outer wall of the rotating pipe (52). The number of inclined spray holes (53) is multiple. The multiple inclined spray holes (53) are evenly arranged along the axis of the rotating pipe (52).

3. The anti-fouling reactor device for APT smelting according to claim 2, characterized in that: The inner ring of the connecting plate (412) is fixedly connected to the outer ring of the rotating tube (52). The upper end face of the rotating tube (52) is provided with a first slot, and the inside of the first slot is rotatably connected to the outer ring of the pull plate tube (411).

4. The anti-fouling reactor device for APT smelting according to claim 3, characterized in that: The rotating tube (52) is provided with a stirring scraper mechanism (8) on its outside. The stirring scraper mechanism (8) includes a mounting frame (81). The mounting frame (81) is fixedly connected to the outside of the rotating tube (52). A flexible scraper (82) is detachably installed on the inner side of the outer wall of the mounting frame (81). A stirring rod (83) is fixedly connected between the rotating tube (52) and the mounting frame (81).

5. The anti-fouling reactor device for APT smelting according to claim 1, characterized in that: A discharge valve (3) is fixedly connected to the lower end face of the reactor body (1).

6. The anti-fouling reactor device for APT smelting according to claim 1, characterized in that: The upper surface of the end cap (2) is fixedly connected to the feed pipe (6), and the feed pipe (6) communicates with the inner cavity of the reactor body (1).

7. The anti-fouling reactor device for APT smelting according to claim 1, characterized in that: The upper surface of the end cap (2) is fixedly connected to a liquid outlet pipe (7), and the liquid outlet pipe (7) communicates with the inner cavity of the reactor body (1).

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