Material conveying device in production of ammonium polyvanadate powder

Abstract

A material conveying device in production of polyammonium vanadate powder comprises a filter press, a stock bin # imgabs 0 # and a stock bin # imgabs 1 #, and scattering mechanisms are arranged in the stock bin # imgabs 2 # and the stock bin # imgabs 3 #; a discharge port of the filter press is sequentially communicated with a belt conveyor, a stock bin # imgabs4, a double-shaft screw conveyor # imgabs5 and a bucket elevator, a discharge port at the top of the bucket elevator is communicated with a stock bin # imgabs6, a discharge port of the stock bin # imgabs7 is connected with a double-shaft screw conveyor # imgabs8 through a pipeline, the double-shaft screw conveyor # imgabs9 is connected with a flash drying machine through a pipeline, and the flash drying machine is connected with the belt conveyor through a pipeline. The flash dryer is hermetically connected with a bag type dust collector through a pipeline, and an unloader is arranged at the bottom of the bag type dust collector. The device has the advantages of simple structure, low equipment failure rate, continuous production and continuous operation; besides, the device is good in sealing performance, free of material flying and suitable for conveying high-water-content and high-viscosity materials in the production of the ammonium polyvanadate powder, the vanadium recovery rate is increased, clean production is achieved, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to a material conveying device in the production of polyammonium vanadate powder. Background Art

[0002] Polyammonium vanadate is a raw material mainly used to produce vanadium pentoxide and vanadium trioxide. It is widely used as a glaze in the ceramic industry, and is also used as a chemical reagent, catalyst, drying agent, mordant, etc. Polyammonium vanadate is a hazardous chemical with certain toxicity. At present, most companies use the ammonium salt precipitation method to produce polyammonium vanadate. The material is relatively sticky and contains up to 20-40% water, which is not easy to transport continuously. The transportation equipment of ammonium vanadate is usually a crane or an electric hoist, which is directly added to the drying equipment through a grab bucket. The transportation equipment is rough and simple, and cannot be transported continuously. In addition, the equipment is not tightly sealed, and the material is scattered and flying. Some materials are scattered in the factory, which not only reduces the vanadium recovery rate, but also affects the on-site operating environment and endangers the health of employees. Therefore, it is urgent to develop a polyammonium vanadate powder production and transportation device for the intermediate product ammonium vanadate wet material. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a material conveying device in the production of ammonium polyvanadate powder, which mainly solves the production problem of conveying high-water-content and high-viscosity materials, has a simple structure, low equipment failure rate, continuous production, and continuous operation; and the device has good sealing performance and no material flying, and is suitable for conveying high-water-content and high-viscosity materials in the production of ammonium polyvanadate powder.

[0004] Improve vanadium recovery rate, achieve clean production, save energy and reduce emissions.

[0005] The utility model is achieved in this way:

[0006] A polyammonium vanadate powder production and conveying device includes a filter press and a silo, wherein the silo is two, namely, and silos , in the silo and silos There are dispersing mechanisms inside.

[0007] The discharge port of the filter press is connected to a belt conveyor, and the discharge port of the belt conveyor is connected to the silo. The feed port is connected to the feed silo. The discharge port is connected to a double-axis screw conveyor , double shaft screw conveyor The discharge port is connected to a bucket elevator, and the discharge port at the top of the bucket elevator is connected to the silo. The silo is connected The discharge port is connected to a double-shaft screw conveyor through a pipeline , the double-shaft screw conveyor A flash dryer is connected via a pipeline, and the flash dryer is airtightly connected to a bag dust collector via the pipeline, and a discharger is provided at the bottom of the bag dust collector.

[0008] Furthermore, in the silo 、Silo The outlet pipes are equipped with rod valves to ensure smooth discharge of ammonium polyvanadate, accurately control the material amount, and avoid sticking, scattering and flying of materials.

[0009] Furthermore, the scattering mechanism includes a motor, a rotating shaft and scattering blades. The motor is arranged on the outer wall of the silo, and the two ends of the rotating shaft are rotatably installed on the side walls on both sides of the silo respectively. The output shaft of the motor passes through the silo and is connected to the rotating shaft. The scattering blades are evenly distributed along the length of the rotating shaft and are vertically installed on the surface of the rotating shaft.

[0010] Furthermore, three groups of upper and lower arranged breaking mechanisms are provided in the silo I and the silo II; wherein, two groups of breaking mechanisms are provided in the upper part of the silo and are located in the same horizontal plane to ensure that they break the materials evenly and consistently, and a breaking mechanism is provided in the lower part of the silo for further breaking up the materials to ensure the uniformity of the materials when discharged from the bottom of the silo.

[0011] Furthermore, the bag filter is connected to the chimney through a pipeline, and a fan is arranged on the pipeline between the bag filter and the chimney.

[0012] Furthermore, the discharge port of the belt conveyor is connected to the silo The center lines of the feed openings are located on the same vertical line.

[0013] Beneficial effects of the utility model:

[0014] (1) The design of the secondary silo optimizes the dispersion effect of the wet material of polyammonium vanadate. A tooth-shaped dispersing mechanism is set in the two silos to effectively avoid the phenomenon of sticking, agglomerating and fluffy materials, and ensure smooth discharge of materials.

[0015] (2) The discharge port of the flash dryer is directly connected to the bag dust collector to efficiently collect and process powdered anhydrous ammonium polyvanadate; the collected ammonium polyvanadate has the advantages of high recovery rate (up to 99.99%), stable performance and simple and flexible operating system.

[0016] (3) The design of the silo valve uses a rod valve as the outlet valve of silo I and silo II, which has a simple structure, automatic operation and no jamming. It overcomes the problems of large opening and closing force and loose closing of the flat gate valve in the application of ammonium polyvanadate. It ensures smooth discharge and precise control of the material amount. It avoids sticking, spilling and flying of materials. It is easy and flexible to operate, has a long service life and low maintenance requirements.

[0017] (4) Overall advantages of the device

[0018] Continuity: Realize the continuous delivery of ammonium polyvanadate.

[0019] Equipment optimization: The equipment is tightly connected, the number of equipment is small, and it is easy to operate.

[0020] Environmental improvement: The flash dryer is sealed and connected to the bag dust collector, so there is no dust spillage, which improves the on-site environment.

[0021] Material conveying: Material conveying is uniform, continuous and stable.

[0022] In summary, the device improves the wet production efficiency and environmental friendliness of ammonium polyvanadate by optimizing design and equipment selection. The whole process is continuous and stable, and the operation difficulty is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the device of the utility model;

[0024] Figure 2 This is an enlarged view of part A of the breaking mechanism in the silo.

[0025] In the figure: 1-filter press, 2-belt conveyor, 3-silo I, 4-double-shaft screw conveyor I, 5-bucket elevator, 6-silo II, 7-dispersing mechanism, 701-rotating shaft, 702-paddle, 8-double-shaft screw conveyor II, 9-flash dryer, 10-bag dust collector, 11-fan, 12-chimney, 13-discharger, 14-rod valve a, 15-rod valve b. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1As shown, the material conveying device in the production of polyammonium vanadate powder includes a filter press 1, wherein the discharge port of the filter press 1 is connected to the feed port of a belt conveyor 2, and the discharge port of the belt conveyor 2 is connected to the feed port of a silo 1 3; the discharge port of the belt conveyor 2 is connected to the feed port of the silo 1 The center lines of the feed ports are located on the same vertical line; three groups of dispersing mechanisms 7 arranged up and down are provided in the silo I3 and the silo II6; wherein, two groups of dispersing mechanisms 7 are provided in the upper part of the silo I3 and are located in the same horizontal plane to ensure that they perform uniform and consistent dispersing operations on the materials, and a dispersing mechanism 7 is provided in the lower part of the silo I3 for further dispersing the materials to ensure the uniformity of the materials when discharged from the bottom of the silo I3; the dispersing mechanism 7 comprises a motor, a rotating shaft 701 and dispersing blades 702, the motor is provided on the outer wall of the silo I3, and the two ends of the rotating shaft are rotatably mounted on the side walls on both sides of the silo I3 respectively, the output shaft of the motor passes through the silo I3 and is connected to the rotating shaft 701, the dispersing blades 702 are evenly distributed along the length of the rotating shaft 701, and are vertically mounted on the surface of the rotating shaft 701; the silo The discharge port of 3 is provided with a rod valve a14. 3. The outlet of the rod valve a is connected to the double-axis screw conveyor 4; the discharge port of the double-axis screw conveyor I 4 is connected to a bucket elevator 5, and the discharge port of the double-axis screw conveyor I 4 is connected to the feed port at the lower end of the bucket elevator 5; a silo II 6 is provided at the bottom of the discharge port at the upper end of the bucket elevator 5, and the silo 6 is provided with a toothed dispersing machine 7b, and three groups of dispersing mechanisms 7 arranged up and down are provided in the silo II6; wherein, at the upper part of the silo II6, two groups of dispersing mechanisms 7 are provided and are located at the same horizontal plane, to ensure that they perform uniform and consistent dispersing operations on the materials, and at the lower part of the silo II6, a dispersing mechanism 7 is provided for further dispersing the materials to ensure the uniformity of the materials when discharged from the bottom of the silo II6; the dispersing mechanism 7 comprises a motor, a rotating shaft 701 and dispersing blades 702, the motor is provided on the outer wall of the silo II6, and the two ends of the rotating shaft are rotatably installed on the side walls on both sides of the silo II6 respectively, the output shaft of the motor passes through the silo II6 and is connected with the rotating shaft 701, the dispersing blades 702 are evenly distributed along the length of the rotating shaft 701, and are vertically installed on the surface of the rotating shaft 701.

[0028] The silo The upper and lower parts of the discharge port of 6 are provided with a rod valve b15, and the outlet of the rod valve b15 is connected to the double-axis screw conveyor 8; the discharge port of the double-axis screw conveyor II 8 is connected to a flash dryer 9.

[0029] The discharge port of the flash dryer 9 is connected to a bag dust collector 10 through a pipeline; the bag dust collector 10 is connected to a chimney 12 through a pipeline, and a fan 11 is installed on the pipeline between the bag dust collector 10 and the chimney 12.

[0030] When in use, the filter press 1 performs filter pressing treatment on the wet polyvanadate material containing 20 wt%-40wt% of water (the wet polyvanadate material containing 29wt% of water in this embodiment). The wet polyvanadate material after treatment is sent to the silo I3 by the belt conveyor 2. The silo I3 is equipped with a dispersing mechanism 7. The motor of the dispersing mechanism drives the rotating shaft 701 and the paddle 702 to rotate 702, and the wet polyvanadate material entering the silo I3 is dispersed at a speed of 0.5-10r / min, so that the material can flow evenly in the subsequent transportation process to avoid blockage or adhesion; the wet polyvanadate material after dispersing treatment is sent to the silo I3 by the double-shaft screw conveyor I. 4 is transported to the lower feeding port of the bucket elevator 5, and the bucket elevator 5 lifts the wet ammonium polyvanadate material to the silo II6. The silo II6 is also equipped with a dispersing mechanism 7, which further disperses the wet ammonium polyvanadate material to ensure the uniformity of the wet ammonium polyvanadate material when it is discharged from the bottom of the silo; the wet ammonium polyvanadate material treated in the silo II6 is transported to the flash dryer 9 by the double-axis screw conveyor 8, and in the flash dryer 9, the material is quickly dehydrated by the high-speed hot air flow to obtain dry ammonium polyvanadate powder;

[0031] The flue gas generated by the flash dryer 9 is dedusted by the bag filter 10 and then discharged into the chimney 12 under the action of the fan 11. The bag filter 10 can effectively capture the ammonium polyvanadate dust in the flue gas to protect the environment; at the same time, the discharger 13 at the bottom of the bag filter 10 collects the powdered ammonium polyvanadate. The ammonium polyvanadate powder production and conveying device realizes the complete production process from filter pressing to drying, from conveying to dust collection, which not only ensures product quality, but also improves production efficiency, and also pays attention to environmental protection.

Claims

1. A material conveying device in the production of ammonium polyvanadate powder, comprising a filter press and a silo, characterized in that: There are two silos, namely and silos , in the silo and silos There are dispersing mechanisms inside. The discharge port of the filter press is connected to a belt conveyor, and the discharge port of the belt conveyor is connected to the silo. The feed port is connected to the feed silo. The discharge port is connected to a double-axis screw conveyor , double shaft screw conveyor The discharge port is connected to a bucket elevator, and the discharge port at the top of the bucket elevator is connected to the silo. The silo is connected The discharge port is connected to a double-shaft screw conveyor through a pipeline , the double-shaft screw conveyor A flash dryer is connected via a pipeline, and the flash dryer is airtightly connected to a bag dust collector via the pipeline, and a discharger is provided at the bottom of the bag dust collector.

2. The material conveying device in the production of ammonium polyvanadate powder according to claim 1, characterized in that: In the silo 、Silo The outlet pipes are all equipped with rod valves.

3. The material conveying device in the production of ammonium polyvanadate powder according to claim 1, characterized in that: The scattering mechanism includes a motor, a rotating shaft and scattering blades. The motor is arranged on the outer wall of the silo, and the two ends of the rotating shaft are rotatably installed on the side walls on both sides of the silo respectively. The output shaft of the motor passes through the silo and is connected to the rotating shaft. The scattering blades are evenly distributed along the length of the rotating shaft and are vertically installed on the surface of the rotating shaft.

4. The material conveying device in the production of ammonium polyvanadate powder according to claim 1, characterized in that: Three groups of upper and lower dispersing mechanisms are provided in the silo I and the silo II; wherein, two groups of dispersing mechanisms are provided in the upper part of the silo and are located in the same horizontal plane, and a dispersing mechanism is provided in the lower part of the silo for further dispersing the materials.

5. The material conveying device in the production of ammonium polyvanadate powder according to claim 1, characterized in that: The bag dust collector is connected to the chimney through a pipeline, and a fan is arranged on the pipeline between the bag dust collector and the chimney.

6. The material conveying device in the production of ammonium polyvanadate powder according to claim 1, characterized in that: The belt conveyor has a discharge port and a silo. The center lines of the feed openings are located on the same vertical line.

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