Rotary kiln system for producing vanadium pentoxide

Abstract

The application relates to the technical field of inorganic compound equipment, in particular to a rotary kiln system for producing vanadium pentoxide, which comprises a rotary kiln body, a supporting mechanism is arranged on one side of the rotary kiln body, a sealing mechanism is movably installed on one side of the rotary kiln body, and a gas conveying pipe is connected to one side of the sealing mechanism; the rotary kiln system can be stably supported by the positioning rod, the rotating drum, the nut and the rollers, the rotating drum is movably sleeved on the positioning rod and is fixed and positioned with the nut, the rollers are distributed in a circumferential array mode at the bottom of the rotary kiln body, the roller is in contact with the rotary kiln body, the rotation of the rotary kiln body is supported through rolling friction, and the resistance is greatly reduced compared with sliding friction. Meanwhile, the rotating drum is matched with the positioning rod to limit the axial displacement of the positioning ring, the convex block is combined with the clamping groove to limit the radial displacement, and the effect that the device can stably support the rotary kiln body to rotate, reduce the running resistance and improve the stability of the supporting structure is achieved.

Description

Technical Field

[0001] This application relates to the field of inorganic compound equipment technology, and in particular to a rotary kiln system for producing vanadium pentoxide. Background Technology

[0002] In the production of vanadium pentoxide, the rotary kiln is one of the core pieces of equipment, and its performance directly affects the production efficiency and product quality. Traditional rotary kiln systems suffer from several problems in practical applications. Insufficient stability of the support structure leads to kiln vibration due to swaying or shifting of support components during prolonged, high-intensity operation. This not only affects the uniform reaction of materials within the kiln but may also shorten the equipment's lifespan. Furthermore, the power transmission efficiency of the drive system is low, making it difficult to precisely adjust the kiln's rotation speed and meet the stringent requirements of the vanadium pentoxide production process for material stirring speed and reaction time. In addition, poor sealing performance is also a common problem. Gas leakage can disrupt the reaction atmosphere within the kiln, leading to incomplete oxidation of vanadium pentoxide, reduced product conversion rate, and potentially causing energy waste and environmental pollution.

[0003] A search revealed Chinese Patent Publication No. CN118999138A, which discloses a rotary kiln system for producing vanadium pentoxide. The system comprises a first rotary kiln subsystem and a second rotary kiln subsystem cascaded together by a second enclosed feeding device. The first rotary kiln subsystem serves as the pre-stage of the second rotary kiln subsystem. Both subsystems employ a rolling calcination method. Air is sequentially supplied from the second rotary kiln subsystem's counter-current air supply system to the second calcining drum of the second rotary kiln subsystem and the first calcining drum of the first rotary kiln subsystem, and discharged from the top of a first material slow-flow settling chamber connected to the feed inlet of the first calcining drum. This invention utilizes a two-stage rolling calcination method, ensuring that ammonium metavanadate is primarily decomposed in the first rotary kiln subsystem, with the resulting reducing gases almost entirely absent from the second rotary kiln subsystem, thus generating high-purity vanadium pentoxide.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Traditional roller assemblies or gear transmission mechanisms in the above-mentioned devices are prone to vibration due to insufficient positioning accuracy when cascaded in multiple stages, which may exacerbate equipment wear over long-term operation. Furthermore, the specific structural design of the sealing mechanism is not clearly defined; if the seal fails in a multi-stage system, external impurities may enter or calcination gases may overflow, polluting the environment and affecting product purity. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a rotary kiln system for producing vanadium pentoxide.

[0006] The rotary kiln system for producing vanadium pentoxide provided in this application adopts the following technical solution: A rotary kiln system for producing vanadium pentoxide includes a rotary kiln body, a support mechanism on one side of the rotary kiln body, a sealing mechanism movably installed on one side of the rotary kiln body, and a gas supply pipe connected to one side of the sealing mechanism; the support mechanism includes a first transmission component and a second transmission component for transmission drive, and a support component for fixing the first transmission component and the second transmission component, both of which are fixedly installed on the top of the base; through the synergistic effect of the dual transmission components and the support component, the load distribution and driving stability of the rotary kiln body are enhanced, effectively reducing the structural deformation risk caused by single-point transmission. Both the first transmission component and the second transmission component include a positioning ring for movably installing a balance gear and a large gear fixedly sleeved on one side of the rotary kiln body, the balance gear meshing with one side of the large gear.

[0007] Optionally, the support assembly includes a positioning rod for penetrating the positioning ring, a rotating cylinder for limiting the displacement of the positioning ring, and a nut for fixing the positioning ring in conjunction with the rotating cylinder. The rotating cylinder is movably sleeved on one side of the positioning rod, and a roller is fixedly sleeved on one side of the rotating cylinder. Through the modular assembly structure of the positioning rod and the rotating cylinder, the support assembly can be quickly disassembled and maintained. The four sets of rollers form a uniform support surface, significantly reducing rotational friction resistance. Furthermore, the rollers are distributed in a circumferential array at the bottom of the rotary kiln body to support the rotation of the rotary kiln body.

[0008] Optionally, a protrusion is fixedly connected to the bottom of the positioning ring, and a balance gear is fixedly installed on the positioning ring. The bottom protrusion engages with the base groove to limit radial displacement; the side positioning hole engages with the positioning rod to achieve axial limiting. The shape of the protrusion matches the shape of the groove on the top of the base to limit the radial displacement of the positioning ring.

[0009] Optionally, the bottom of the sealing mechanism is provided with a feed port communicating with the rotary kiln body. The gas supply pipe is fixedly installed on one side of the sealing mechanism through a sealing side plate. The gas supply pipe is connected to the rotary kiln body through the sealing mechanism to supply the gas required for the reaction into the kiln, meeting the process gas atmosphere requirements. It is used to supply gas into the interior of the rotary kiln body.

[0010] Optionally, the balancing gear includes at least two sets of meshing gears. The balancing gear meshes with a large gear outside the rotary kiln body to transmit power from the external drive mechanism and drive the rotary kiln to rotate. At least two sets of gears can optimize transmission stability. One set of gears meshes with the output end of the external drive mechanism to drive the rotary kiln body to rotate.

[0011] Optionally, a positioning hole is provided on one side of the positioning ring, and a positioning rod passes through the positioning hole and is fixedly connected to the rotating cylinder through a nut. The positioning rod passes through the positioning hole of the positioning ring and cooperates with the nut to fix the rotating cylinder, thereby restricting the axial movement of the positioning ring. This achieves axial positioning of the positioning ring.

[0012] Optionally, the number of rollers is four sets, with each set of rollers evenly distributed on one side of the rotary drum at 90° intervals, to provide stable support for the rotary kiln body. The rollers are arranged in a circumferential array at the bottom of the rotary kiln to support the weight of the rotary kiln body and ensure its stability and balance during rotation.

[0013] Optionally, the external drive mechanism includes a motor and a reducer. The motor and reducer provide a power source and are connected to a balancing gear via a coupling to adjust the rotational speed of the rotary kiln body, adapting to different production process requirements. The output end of the reducer is connected to the gear set of the balancing gear via a coupling, used to adjust the rotational speed of the rotary kiln body.

[0014] Optionally, the large gear is welded or bolted to the outer wall of the rotary kiln body. The large gear is fixedly sleeved on the outside of the rotary kiln body and transmits driving force to the rotary kiln body through its tooth surface meshing with the balance gear, causing it to rotate at a set speed. Furthermore, the tooth surface of the large gear maintains a preset meshing gap with the tooth surface of the balance gear.

[0015] In summary, this application includes the following beneficial technical effects: 1. This utility model, by setting up components such as a positioning rod, a rotating cylinder, a nut, and rollers, uses a rotating cylinder that is movably sleeved on the positioning rod and cooperates with the nut to fix the positioning ring, so that the rollers are distributed in a circumferential array at the bottom of the rotary kiln body. The rollers contact the rotary kiln body and support its rotation through rolling friction, which significantly reduces resistance compared to sliding friction. At the same time, the cooperation between the rotating cylinder and the positioning rod restricts the axial displacement of the positioning ring, and the combination of protrusions and grooves restricts radial displacement. Thus, this device can stably support the rotation of the rotary kiln body through multiple sets of rollers, reduce operating resistance, and improve the stability of the support structure. 2. This utility model incorporates components such as a balance gear, a large gear, a positioning ring, and an external drive mechanism. The balance gear meshes with the large gear, and the external drive mechanism, consisting of a motor and a reducer, drives the balance gear to rotate, causing the large gear to rotate the rotary kiln body. The positioning ring, through a positioning hole and a positioning rod, achieves axial positioning, while the protrusion and slot restrict radial displacement, ensuring gear meshing accuracy. The balance gear's design with at least two gear sets ensures balanced force distribution, and the reducer adjusts the speed to stabilize the rotary kiln body's rotational speed. Thus, this device achieves the effects of smooth driving of the rotary kiln body, precise speed control, and reduced gear wear through precisely meshed transmission components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a partial structural diagram of an embodiment of this application; Figure 3 This is a partial structural diagram of the support mechanism in an embodiment of this application; Figure 4 This is a schematic diagram of the partial structure installation of the support mechanism in an embodiment of this application; Reference numerals in the attached drawings: 1. Rotary kiln body; 2. Support mechanism; 21. First transmission assembly; 22. Second transmission assembly; 23. Support assembly; 201. Base; 202. Slot; 203. Positioning ring; 204. Positioning hole; 205. Balance gear; 206. Large gear; 207. Positioning rod; 208. Nut; 209. Rotary drum; 210. Roller; 3. Sealing mechanism; 4. Gas supply pipe. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0018] This application discloses a rotary kiln system for producing vanadium pentoxide.

[0019] Please see Figure 1 A rotary kiln system for producing vanadium pentoxide includes a rotary kiln body 1, a support mechanism 2 on one side of the rotary kiln body 1, a sealing mechanism 3 movably installed on one side of the rotary kiln body 1, and a gas supply pipe 4 connected to one side of the sealing mechanism 3. The bottom of the sealing mechanism 3 is provided with a feed port that communicates with the rotary kiln body 1. The gas supply pipe 4 is fixedly installed on one side of the sealing mechanism 3 through the sealing side plate and is used to supply gas into the rotary kiln body 1.

[0020] Please see Figures 2 to 4 The support mechanism 2 includes a first transmission assembly 21 and a second transmission assembly 22 for transmission drive, and a support assembly 23 for fixing the first transmission assembly 21 and the second transmission assembly 22. Both the first transmission assembly 21 and the second transmission assembly 22 are fixedly mounted on the top of the base 201. Each of the first transmission assembly 21 and the second transmission assembly 22 includes a positioning ring 203 for movably mounting a balance gear 205 and a large gear 206 fixedly sleeved on one side of the rotary kiln body 1. The balance gear 205 meshes with one side of the large gear 206. A protrusion is fixedly connected to the bottom of the positioning ring 203. The shape of the protrusion matches the shape of the slot 202 opened on the top of the base 201 to limit the radial displacement of the positioning ring 203.

[0021] The external drive mechanism includes a motor and a reducer. The output end of the reducer is connected to the gear set of the balance gear 205 via a coupling, and is used to adjust the rotational speed of the rotary kiln body 1. The balance gear 205 includes at least two sets of meshing gears, one of which meshes with the output end of the external drive mechanism to drive the rotary kiln body 1 to rotate. The large gear 206 is fixedly sleeved on the outer wall of the rotary kiln body 1 by welding or bolting, and the tooth surface of the large gear 206 maintains a preset meshing clearance with the tooth surface of the balance gear 205.

[0022] The support assembly 23 includes a positioning rod 207 for penetrating the positioning ring 203, a rotating cylinder 209 for limiting the displacement of the positioning ring 203, and a nut 208 for fixing the positioning ring 203 to the rotating cylinder 209. A positioning hole 204 is provided on one side of the positioning ring 203, and the positioning rod 207 passes through the positioning hole 204 and is fixedly connected to the rotating cylinder 209 via the nut 208 to achieve axial positioning of the positioning ring 203. The rotating cylinder 209 is movably sleeved on one side of the positioning rod 207, and a roller 210 is fixedly sleeved on one side of the rotating cylinder 209. The rollers 210 are distributed in a circumferential array at the bottom of the rotary kiln body 1 to support the rotation of the rotary kiln body 1.

[0023] There are four sets of rollers 210, and each set of rollers 210 is evenly distributed on one side of the rotary drum 209 at 90° intervals to provide stable support for the rotary kiln body 1.

[0024] Further explanation is needed: Support mechanism 2 is the core transmission and support component of the rotary kiln system for producing vanadium pentoxide. It primarily functions as a drive mechanism and a stable support. In terms of transmission, support mechanism 2 transmits the rotational power of the rotary kiln body 1 through the first transmission assembly 21 and the second transmission assembly 22. Both transmission assemblies include a positioning ring 203, a balance gear 205, and a large gear 206 fixedly sleeved on the rotary kiln body 1. The balance gear 205 meshes with the large gear 206. One set of gears is connected to an external drive mechanism, transmitting power to the rotary kiln body 1 through gear meshing, driving it to rotate at a preset speed to meet the requirements of vanadium pentoxide production. During production, the rotation speed required for uniform stirring of materials and chemical reactions is crucial. In terms of stable support, the support assembly 23 constructs a stable support structure through positioning rod 207, rotating drum 209, nut 208, and rollers 210. The four sets of rollers 210 are distributed in a circumferential array at 90° intervals at the bottom of the rotary kiln body 1, evenly bearing the weight of the kiln body and reducing radial displacement during rotation. The bottom protrusion of the positioning ring 203 cooperates with the slot 202 on the top of the base 201 to limit radial displacement. The positioning rod 207 passes through the positioning hole 204 and fixes the rotating drum 209 through the nut 208 to achieve axial limitation, ensuring that the rotary kiln remains stable when rotating at high speed and avoiding the impact of vibration or displacement on production efficiency and equipment life. The implementation principle of the rotary kiln system for producing vanadium pentoxide in this application embodiment is as follows: First, the external drive mechanism is connected to the gear set of the balance gear 205 through a coupling. The power is transmitted to the large gear 206 fixed on the outer wall of the rotary kiln body 1 through meshing transmission. The balance gear 205 and the large gear 206 maintain a preset meshing gap. The rotation of the gear set drives the rotary kiln body 1 to rotate clockwise or counterclockwise at the speed required by the process, providing a motion basis for material tumbling and chemical reaction.

[0025] Secondly, the four sets of rollers 210 in the support assembly 23 are evenly distributed at 90° intervals at the bottom of the rotary kiln body 1. They are connected to the positioning rod 207 through the rotating cylinder 209 and roll synchronously with the kiln body as it rotates, evenly bearing the weight of the kiln body and reducing friction. The bottom protrusion of the positioning ring 203 is embedded in the slot 202 at the top of the base 201 to limit the radial displacement of the kiln body. The positioning rod 207 passes through the positioning hole 204 of the positioning ring 203 and fixes the rotating cylinder 209 through the nut 208 to achieve axial limit, ensuring that there is no offset or vibration when the kiln body rotates at high speed and maintaining a stable operating state.

[0026] Next, the sealing mechanism 3 delivers the gas required for the reaction into the rotary kiln body 1 through the gas supply pipe 4. The gas supply pipe 4 is fixed to the side of the sealing mechanism 3. The gas is evenly introduced into the kiln through the sealing side plate. At the same time, the bottom feed port of the sealing mechanism 3 is connected to the kiln body for material input. The sealing structure design prevents gas leakage, maintains the stability of the pressure and atmosphere inside the kiln, and provides the required oxidation reaction environment for the synthesis of vanadium pentoxide.

[0027] Next, the material to be processed enters the rotary kiln body 1 from the feed port of the sealing mechanism 3. As the kiln rotates, it is continuously lifted, tumbled, and sprinkled to form a uniform material curtain. The material comes into full contact with the input gas at high temperature and undergoes an oxidation reaction. The kiln tilt angle and rotation speed are matched to make the material move slowly along the axial direction, ensuring sufficient reaction time and improving the conversion rate and product purity.

[0028] Finally, the reacted material rotates with the kiln to the discharge end and is discharged through the kiln end opening or the matching discharge device. After subsequent cooling and collection processes, vanadium pentoxide product is obtained. The support mechanism 2 continuously maintains the stable rotation of the kiln, the gas supply pipe 4 replenishes the reaction gas as needed, and the feed port feeds periodically, forming a continuous production cycle. The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary kiln system for producing vanadium pentoxide, comprising a rotary kiln body (1), characterized in that: A support mechanism (2) is provided on one side of the rotary kiln body (1), and a sealing mechanism (3) is movably installed on one side of the rotary kiln body (1). A gas supply pipe (4) is connected to one side of the sealing mechanism (3). The support mechanism (2) includes a first transmission component (21) and a second transmission component (22) for transmission drive, and a support component (23) for fixing the first transmission component (21) and the second transmission component (22). The first transmission component (21) and the second transmission component (22) are both fixedly installed on the top of the base (201). The first transmission component (21) and the second transmission component (22) each include a positioning ring (203) for movably installing a balance gear (205) and a large gear (206) fixedly sleeved on one side of the rotary kiln body (1). The balance gear (205) meshes with one side of the large gear (206).

2. The rotary kiln system for producing vanadium pentoxide according to claim 1, characterized in that: The support assembly (23) includes a positioning rod (207) for penetrating the positioning ring (203), a rotating cylinder (209) for limiting the displacement of the positioning ring (203), and a nut (208) for fixing the positioning ring (203) in conjunction with the rotating cylinder (209). The rotating cylinder (209) is movably sleeved on one side of the positioning rod (207). A roller (210) is fixedly sleeved on one side of the rotating cylinder (209), and the rollers (210) are distributed in a circumferential array at the bottom of the rotary kiln body (1) to support the rotation of the rotary kiln body (1).

3. The rotary kiln system for producing vanadium pentoxide according to claim 1, characterized in that: The bottom of the positioning ring (203) is fixedly connected to a protrusion, the shape of which is adapted to the shape of the slot (202) opened on the top of the base (201) to limit the radial displacement of the positioning ring (203).

4. The rotary kiln system for producing vanadium pentoxide according to claim 1, characterized in that: The bottom of the sealing mechanism (3) is provided with a feeding port that communicates with the rotary kiln body (1). The gas conveying pipe (4) is fixedly installed on one side of the sealing mechanism (3) through the sealing side plate and is used to convey gas into the rotary kiln body (1).

5. The rotary kiln system for producing vanadium pentoxide according to claim 2, characterized in that: The balancing gear (205) includes at least two sets of meshing gears, one of which meshes with the output end of an external drive mechanism to drive the rotary kiln body (1) to rotate.

6. The rotary kiln system for producing vanadium pentoxide according to claim 3, characterized in that: The positioning ring (203) has a positioning hole (204) on one side, and the positioning rod (207) passes through the positioning hole (204) and is fixedly connected to the rotating drum (209) through the nut (208) to achieve axial positioning of the positioning ring (203).

7. The rotary kiln system for producing vanadium pentoxide according to claim 2, characterized in that: The number of rollers (210) is four sets, and each set of rollers (210) is evenly distributed on one side of the rotary drum (209) at 90° intervals to form a stable support for the rotary kiln body (1).

8. The rotary kiln system for producing vanadium pentoxide according to claim 5, characterized in that: The external drive mechanism includes a motor and a reducer. The output end of the reducer is connected to the gear set of the balance gear (205) via a coupling, and is used to adjust the rotational speed of the rotary kiln body (1).

9. The rotary kiln system for producing vanadium pentoxide according to claim 1, characterized in that: The large gear (206) is fixed to the outer wall of the rotary kiln body (1) by welding or bolting, and the tooth surface of the large gear (206) and the tooth surface of the balance gear (205) maintain a preset meshing gap.

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